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openwrt-xburst/target/linux/avr32/patches/100-git_sync.patch
kaloz 8166449e2a resync avr32 with 2.6.23.atmel.1 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9332 3c298f89-4303-0410-b956-a3cf2f4a3e73
2007-10-16 12:22:57 +00:00

13173 lines
340 KiB
Diff
Raw Blame History

MAINTAINERS | 7 +
Makefile | 2 +-
arch/avr32/Kconfig | 7 +
arch/avr32/Makefile | 1 +
arch/avr32/boards/atngw100/Kconfig | 12 +
arch/avr32/boards/atngw100/flash.c | 5 +-
arch/avr32/boards/atngw100/setup.c | 26 +-
arch/avr32/boards/atstk1000/Kconfig | 12 +
arch/avr32/boards/atstk1000/atstk1002.c | 72 ++
arch/avr32/boards/atstk1000/flash.c | 5 +-
arch/avr32/configs/atngw100_defconfig | 201 +++-
arch/avr32/configs/atstk1002_defconfig | 354 +++++-
arch/avr32/drivers/Makefile | 1 +
arch/avr32/drivers/dw-dmac.c | 761 ++++++++++++
arch/avr32/drivers/dw-dmac.h | 42 +
arch/avr32/kernel/Makefile | 6 +-
arch/avr32/kernel/dma-controller.c | 34 +
arch/avr32/kernel/entry-avr32b.S | 26 +-
arch/avr32/kernel/setup.c | 2 +-
arch/avr32/kernel/vmlinux.lds.S | 143 +++
arch/avr32/kernel/vmlinux.lds.c | 142 ---
arch/avr32/mach-at32ap/Kconfig | 7 +
arch/avr32/mach-at32ap/Makefile | 1 +
arch/avr32/mach-at32ap/at32ap7000.c | 241 ++++-
arch/avr32/mach-at32ap/clock.c | 116 ++
arch/avr32/mach-at32ap/gpio-dev.c | 573 +++++++++
arch/avr32/mach-at32ap/hsmc.c | 129 ++-
arch/avr32/mach-at32ap/pio.c | 80 ++
arch/avr32/mach-at32ap/pm.h | 8 +
arch/avr32/mm/dma-coherent.c | 7 +
arch/avr32/mm/init.c | 12 +-
drivers/i2c/busses/Kconfig | 8 +
drivers/i2c/busses/Makefile | 1 +
drivers/i2c/busses/i2c-atmeltwi.c | 436 +++++++
drivers/i2c/busses/i2c-atmeltwi.h | 117 ++
drivers/misc/Kconfig | 9 +
drivers/misc/Makefile | 1 +
drivers/misc/atmel-ssc.c | 174 +++
drivers/mmc/host/Kconfig | 10 +
drivers/mmc/host/Makefile | 1 +
drivers/mmc/host/atmel-mci.c | 1161 ++++++++++++++++++
drivers/mmc/host/atmel-mci.h | 192 +++
drivers/mtd/chips/cfi_cmdset_0001.c | 43 +
drivers/mtd/chips/cfi_cmdset_0002.c | 6 +-
drivers/spi/atmel_spi.c | 4 +-
drivers/usb/gadget/Kconfig | 26 +-
drivers/usb/gadget/Makefile | 1 +
drivers/usb/gadget/atmel_usba_udc.c | 2038 +++++++++++++++++++++++++++++++
drivers/usb/gadget/atmel_usba_udc.h | 350 ++++++
drivers/video/atmel_lcdfb.c | 6 +-
drivers/video/backlight/Kconfig | 12 +
drivers/video/backlight/Makefile | 2 +
drivers/video/backlight/ltv350qv.c | 339 +++++
drivers/video/backlight/ltv350qv.h | 95 ++
include/asm-avr32/arch-at32ap/board.h | 20 +
include/asm-avr32/arch-at32ap/portmux.h | 13 +
include/asm-avr32/arch-at32ap/smc.h | 51 +-
include/asm-avr32/dma-controller.h | 166 +++
include/asm-avr32/dma-mapping.h | 17 +-
include/asm-avr32/system.h | 13 +-
include/asm-avr32/unistd.h | 13 +
include/linux/atmel-ssc.h | 312 +++++
include/linux/spi/at73c213.h | 25 +
scripts/checkstack.pl | 5 +
sound/Kconfig | 6 +
sound/Makefile | 3 +-
sound/avr32/Kconfig | 11 +
sound/avr32/Makefile | 3 +
sound/avr32/ac97c.c | 914 ++++++++++++++
sound/avr32/ac97c.h | 71 ++
sound/oss/Kconfig | 4 +
sound/oss/Makefile | 1 +
sound/oss/at32_abdac.c | 722 +++++++++++
sound/oss/at32_abdac.h | 59 +
sound/spi/Kconfig | 31 +
sound/spi/Makefile | 5 +
sound/spi/at73c213.c | 1121 +++++++++++++++++
sound/spi/at73c213.h | 119 ++
78 files changed, 11500 insertions(+), 272 deletions(-)
create mode 100644 arch/avr32/boards/atngw100/Kconfig
create mode 100644 arch/avr32/drivers/Makefile
create mode 100644 arch/avr32/drivers/dw-dmac.c
create mode 100644 arch/avr32/drivers/dw-dmac.h
create mode 100644 arch/avr32/kernel/dma-controller.c
create mode 100644 arch/avr32/kernel/vmlinux.lds.S
delete mode 100644 arch/avr32/kernel/vmlinux.lds.c
create mode 100644 arch/avr32/mach-at32ap/gpio-dev.c
create mode 100644 drivers/i2c/busses/i2c-atmeltwi.c
create mode 100644 drivers/i2c/busses/i2c-atmeltwi.h
create mode 100644 drivers/misc/atmel-ssc.c
create mode 100644 drivers/mmc/host/atmel-mci.c
create mode 100644 drivers/mmc/host/atmel-mci.h
create mode 100644 drivers/usb/gadget/atmel_usba_udc.c
create mode 100644 drivers/usb/gadget/atmel_usba_udc.h
create mode 100644 drivers/video/backlight/ltv350qv.c
create mode 100644 drivers/video/backlight/ltv350qv.h
create mode 100644 include/asm-avr32/dma-controller.h
create mode 100644 include/linux/atmel-ssc.h
create mode 100644 include/linux/spi/at73c213.h
create mode 100644 sound/avr32/Kconfig
create mode 100644 sound/avr32/Makefile
create mode 100644 sound/avr32/ac97c.c
create mode 100644 sound/avr32/ac97c.h
create mode 100644 sound/oss/at32_abdac.c
create mode 100644 sound/oss/at32_abdac.h
create mode 100644 sound/spi/Kconfig
create mode 100644 sound/spi/Makefile
create mode 100644 sound/spi/at73c213.c
create mode 100644 sound/spi/at73c213.h
diff --git a/MAINTAINERS b/MAINTAINERS
index 9a91d9e..587afe3 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -669,6 +669,13 @@ P: Haavard Skinnemoen
M: hskinnemoen@atmel.com
S: Supported
+ATMEL USBA UDC DRIVER
+P: Haavard Skinnemoen
+M: hskinnemoen@atmel.com
+L: kernel@avr32linux.org
+W: http://avr32linux.org/twiki/bin/view/Main/AtmelUsbDeviceDriver
+S: Supported
+
ATMEL WIRELESS DRIVER
P: Simon Kelley
M: simon@thekelleys.org.uk
diff --git a/arch/avr32/Kconfig b/arch/avr32/Kconfig
index d12346a..ec6c7c5 100644
--- a/arch/avr32/Kconfig
+++ b/arch/avr32/Kconfig
@@ -116,6 +116,9 @@ endchoice
if BOARD_ATSTK1000
source "arch/avr32/boards/atstk1000/Kconfig"
endif
+if BOARD_ATNGW100
+source "arch/avr32/boards/atngw100/Kconfig"
+endif
choice
prompt "Boot loader type"
@@ -175,6 +178,10 @@ config OWNERSHIP_TRACE
enabling Nexus-compliant debuggers to keep track of the PID of the
currently executing task.
+config DW_DMAC
+ tristate "Synopsys DesignWare DMA Controller support"
+ default y if CPU_AT32AP7000
+
# FPU emulation goes here
source "kernel/Kconfig.hz"
diff --git a/arch/avr32/Makefile b/arch/avr32/Makefile
index dc6bc01..eb72198 100644
--- a/arch/avr32/Makefile
+++ b/arch/avr32/Makefile
@@ -31,6 +31,7 @@ core-$(CONFIG_BOARD_ATNGW100) += arch/avr32/boards/atngw100/
core-$(CONFIG_LOADER_U_BOOT) += arch/avr32/boot/u-boot/
core-y += arch/avr32/kernel/
core-y += arch/avr32/mm/
+drivers-y += arch/avr32/drivers/
libs-y += arch/avr32/lib/
archincdir-$(CONFIG_PLATFORM_AT32AP) := arch-at32ap
diff --git a/arch/avr32/boards/atngw100/Kconfig b/arch/avr32/boards/atngw100/Kconfig
new file mode 100644
index 0000000..5d922df
--- /dev/null
+++ b/arch/avr32/boards/atngw100/Kconfig
@@ -0,0 +1,12 @@
+# NGW100 customization
+
+config BOARD_ATNGW100_I2C_GPIO
+ bool "Use GPIO for i2c instead of built-in TWI module"
+ help
+ The driver for the built-in TWI module has been plagued by
+ various problems, while the i2c-gpio driver is based on the
+ trusty old i2c-algo-bit bitbanging engine, making it work
+ on pretty much any setup.
+
+ Choose 'Y' here if you're having i2c-related problems and
+ want to rule out the i2c bus driver.
diff --git a/arch/avr32/boards/atngw100/flash.c b/arch/avr32/boards/atngw100/flash.c
index f9b32a8..b07ae63 100644
--- a/arch/avr32/boards/atngw100/flash.c
+++ b/arch/avr32/boards/atngw100/flash.c
@@ -15,7 +15,7 @@
#include <asm/arch/smc.h>
-static struct smc_config flash_config __initdata = {
+static struct smc_timing flash_timing __initdata = {
.ncs_read_setup = 0,
.nrd_setup = 40,
.ncs_write_setup = 0,
@@ -28,7 +28,9 @@ static struct smc_config flash_config __initdata = {
.read_cycle = 120,
.write_cycle = 120,
+};
+static struct smc_config flash_config __initdata = {
.bus_width = 2,
.nrd_controlled = 1,
.nwe_controlled = 1,
@@ -82,6 +84,7 @@ static int __init atngw100_flash_init(void)
{
int ret;
+ smc_set_timing(&flash_config, &flash_timing);
ret = smc_set_configuration(0, &flash_config);
if (ret < 0) {
printk(KERN_ERR "atngw100: failed to set NOR flash timing\n");
diff --git a/arch/avr32/boards/atngw100/setup.c b/arch/avr32/boards/atngw100/setup.c
index ef80156..2a5f587 100644
--- a/arch/avr32/boards/atngw100/setup.c
+++ b/arch/avr32/boards/atngw100/setup.c
@@ -42,6 +42,11 @@ static struct spi_board_info spi0_board_info[] __initdata = {
},
};
+static struct mci_platform_data __initdata mci0_data = {
+ .detect_pin = GPIO_PIN_PC(25),
+ .wp_pin = GPIO_PIN_PE(0),
+};
+
/*
* The next two functions should go away as the boot loader is
* supposed to initialize the macb address registers with a valid
@@ -124,9 +129,13 @@ static struct platform_device ngw_gpio_leds = {
}
};
+#ifdef CONFIG_BOARD_ATNGW100_I2C_GPIO
static struct i2c_gpio_platform_data i2c_gpio_data = {
- .sda_pin = GPIO_PIN_PA(6),
- .scl_pin = GPIO_PIN_PA(7),
+ .sda_pin = GPIO_PIN_PA(6),
+ .scl_pin = GPIO_PIN_PA(7),
+ .sda_is_open_drain = 1,
+ .scl_is_open_drain = 1,
+ .udelay = 2, /* close to 100 kHz */
};
static struct platform_device i2c_gpio_device = {
@@ -136,6 +145,7 @@ static struct platform_device i2c_gpio_device = {
.platform_data = &i2c_gpio_data,
},
};
+#endif
static int __init atngw100_init(void)
{
@@ -154,6 +164,8 @@ static int __init atngw100_init(void)
set_hw_addr(at32_add_device_eth(1, &eth_data[1]));
at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
+ at32_add_device_mci(0, &mci0_data);
+ at32_add_device_usba(0, NULL);
for (i = 0; i < ARRAY_SIZE(ngw_leds); i++) {
at32_select_gpio(ngw_leds[i].gpio,
@@ -161,9 +173,15 @@ static int __init atngw100_init(void)
}
platform_device_register(&ngw_gpio_leds);
- at32_select_gpio(i2c_gpio_data.sda_pin, 0);
- at32_select_gpio(i2c_gpio_data.scl_pin, 0);
+#ifdef CONFIG_BOARD_ATNGW100_I2C_GPIO
+ at32_select_gpio(i2c_gpio_data.sda_pin,
+ AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
+ at32_select_gpio(i2c_gpio_data.scl_pin,
+ AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
platform_device_register(&i2c_gpio_device);
+#else
+ at32_add_device_twi(0);
+#endif
return 0;
}
diff --git a/arch/avr32/boards/atstk1000/Kconfig b/arch/avr32/boards/atstk1000/Kconfig
index 718578f..b1f5a62 100644
--- a/arch/avr32/boards/atstk1000/Kconfig
+++ b/arch/avr32/boards/atstk1000/Kconfig
@@ -76,4 +76,16 @@ config BOARD_ATSTK1002_J2_RGB
endchoice
+config BOARD_ATSTK1002_ENABLE_AC97
+ bool "Use AC97C instead of ABDAC"
+ help
+ Select this if you want to use the built-in AC97 controller
+ instead of the built-in Audio Bitstream DAC. These share
+ the same I/O pins on the AP7000, so both can't be enabled
+ at the same time.
+
+ Note that the STK1000/STK1002 kit doesn't ship with an AC97
+ codec on board, so say N unless you've got an expansion
+ board with an AC97 codec on it that you want to use.
+
endif # stk 1002
diff --git a/arch/avr32/boards/atstk1000/atstk1002.c b/arch/avr32/boards/atstk1000/atstk1002.c
index c9981b7..f7fb509 100644
--- a/arch/avr32/boards/atstk1000/atstk1002.c
+++ b/arch/avr32/boards/atstk1000/atstk1002.c
@@ -16,6 +16,7 @@
#include <linux/string.h>
#include <linux/types.h>
#include <linux/spi/spi.h>
+#include <linux/spi/at73c213.h>
#include <video/atmel_lcdc.h>
@@ -49,7 +50,25 @@ static struct eth_platform_data __initdata eth_data[2] = {
};
#ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
+#ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
+static struct at73c213_board_info at73c213_data = {
+ .ssc_id = 0,
+ .shortname = "AVR32 STK1000 external DAC",
+};
+#endif
+#endif
+#ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
static struct spi_board_info spi0_board_info[] __initdata = {
+#ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
+ {
+ /* AT73C213 */
+ .modalias = "at73c213",
+ .max_speed_hz = 200000,
+ .chip_select = 0,
+ .mode = SPI_MODE_1,
+ .platform_data = &at73c213_data,
+ },
+#endif
{
/* QVGA display */
.modalias = "ltv350qv",
@@ -66,6 +85,11 @@ static struct spi_board_info spi1_board_info[] __initdata = { {
} };
#endif
+static struct mci_platform_data __initdata mci0_data = {
+ .detect_pin = GPIO_PIN_NONE,
+ .wp_pin = GPIO_PIN_NONE,
+};
+
/*
* The next two functions should go away as the boot loader is
* supposed to initialize the macb address registers with a valid
@@ -180,6 +204,38 @@ static void setup_j2_leds(void)
}
#endif
+#ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
+#ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
+static void __init at73c213_set_clk(struct at73c213_board_info *info)
+{
+ struct clk *gclk;
+ struct clk *pll;
+
+ gclk = clk_get(NULL, "gclk0");
+ if (IS_ERR(gclk))
+ goto err_gclk;
+ pll = clk_get(NULL, "pll0");
+ if (IS_ERR(pll))
+ goto err_pll;
+
+ if (clk_set_parent(gclk, pll)) {
+ pr_debug("STK1000: failed to set pll0 as parent for DAC clock\n");
+ goto err_set_clk;
+ }
+
+ at32_select_periph(GPIO_PIN_PA(30), GPIO_PERIPH_A, 0);
+ info->dac_clk = gclk;
+
+err_set_clk:
+ clk_put(pll);
+err_pll:
+ clk_put(gclk);
+err_gclk:
+ return;
+}
+#endif
+#endif
+
void __init setup_board(void)
{
#ifdef CONFIG_BOARD_ATSTK1002_SW2_CUSTOM
@@ -235,18 +291,34 @@ static int __init atstk1002_init(void)
#ifdef CONFIG_BOARD_ATSTK1002_SPI1
at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
#endif
+ at32_add_device_twi(0);
+#ifndef CONFIG_BOARD_ATSTK1002_SW2_CUSTOM
+ at32_add_device_mci(0, &mci0_data);
+#endif
#ifdef CONFIG_BOARD_ATSTK1002_SW5_CUSTOM
set_hw_addr(at32_add_device_eth(1, &eth_data[1]));
#else
at32_add_device_lcdc(0, &atstk1000_lcdc_data,
fbmem_start, fbmem_size);
#endif
+ at32_add_device_usba(0, NULL);
+#ifdef CONFIG_BOARD_ATSTK1002_ENABLE_AC97
+ at32_add_device_ac97c(0);
+#else
+ at32_add_device_abdac(0);
+#endif
#ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
at32_add_device_ssc(0, ATMEL_SSC_TX);
#endif
setup_j2_leds();
+#ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
+#ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
+ at73c213_set_clk(&at73c213_data);
+#endif
+#endif
+
return 0;
}
postcore_initcall(atstk1002_init);
diff --git a/arch/avr32/boards/atstk1000/flash.c b/arch/avr32/boards/atstk1000/flash.c
index aac4300..3d0a102 100644
--- a/arch/avr32/boards/atstk1000/flash.c
+++ b/arch/avr32/boards/atstk1000/flash.c
@@ -15,7 +15,7 @@
#include <asm/arch/smc.h>
-static struct smc_config flash_config __initdata = {
+static struct smc_timing flash_timing __initdata = {
.ncs_read_setup = 0,
.nrd_setup = 40,
.ncs_write_setup = 0,
@@ -28,7 +28,9 @@ static struct smc_config flash_config __initdata = {
.read_cycle = 120,
.write_cycle = 120,
+};
+static struct smc_config flash_config __initdata = {
.bus_width = 2,
.nrd_controlled = 1,
.nwe_controlled = 1,
@@ -82,6 +84,7 @@ static int __init atstk1000_flash_init(void)
{
int ret;
+ smc_set_timing(&flash_config, &flash_timing);
ret = smc_set_configuration(0, &flash_config);
if (ret < 0) {
printk(KERN_ERR "atstk1000: failed to set NOR flash timing\n");
diff --git a/arch/avr32/configs/atngw100_defconfig b/arch/avr32/configs/atngw100_defconfig
index b799a68..adce168 100644
--- a/arch/avr32/configs/atngw100_defconfig
+++ b/arch/avr32/configs/atngw100_defconfig
@@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
-# Linux kernel version: 2.6.22-rc5
-# Sat Jun 23 15:40:05 2007
+# Linux kernel version: 2.6.22.atmel.1
+# Thu Jul 12 17:49:20 2007
#
CONFIG_AVR32=y
CONFIG_GENERIC_GPIO=y
@@ -114,6 +114,7 @@ CONFIG_PLATFORM_AT32AP=y
CONFIG_CPU_AT32AP7000=y
# CONFIG_BOARD_ATSTK1000 is not set
CONFIG_BOARD_ATNGW100=y
+# CONFIG_BOARD_ATNGW100_I2C_GPIO is not set
CONFIG_LOADER_U_BOOT=y
#
@@ -122,6 +123,7 @@ CONFIG_LOADER_U_BOOT=y
# CONFIG_AP7000_32_BIT_SMC is not set
CONFIG_AP7000_16_BIT_SMC=y
# CONFIG_AP7000_8_BIT_SMC is not set
+CONFIG_GPIO_DEV=y
CONFIG_LOAD_ADDRESS=0x10000000
CONFIG_ENTRY_ADDRESS=0x90000000
CONFIG_PHYS_OFFSET=0x10000000
@@ -145,6 +147,7 @@ CONFIG_SPLIT_PTLOCK_CPUS=4
# CONFIG_RESOURCES_64BIT is not set
CONFIG_ZONE_DMA_FLAG=0
# CONFIG_OWNERSHIP_TRACE is not set
+CONFIG_DW_DMAC=y
# CONFIG_HZ_100 is not set
CONFIG_HZ_250=y
# CONFIG_HZ_300 is not set
@@ -153,6 +156,27 @@ CONFIG_HZ=250
CONFIG_CMDLINE=""
#
+# Power managment options
+#
+
+#
+# CPU Frequency scaling
+#
+CONFIG_CPU_FREQ=y
+CONFIG_CPU_FREQ_TABLE=y
+# CONFIG_CPU_FREQ_DEBUG is not set
+CONFIG_CPU_FREQ_STAT=m
+# CONFIG_CPU_FREQ_STAT_DETAILS is not set
+CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
+# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
+CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+CONFIG_CPU_FREQ_GOV_POWERSAVE=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
+# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set
+CONFIG_CPU_FREQ_AT32AP=y
+
+#
# Bus options
#
# CONFIG_ARCH_SUPPORTS_MSI is not set
@@ -187,13 +211,8 @@ CONFIG_NET_KEY=y
# CONFIG_NET_KEY_MIGRATE is not set
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
-CONFIG_IP_ADVANCED_ROUTER=y
-CONFIG_ASK_IP_FIB_HASH=y
-# CONFIG_IP_FIB_TRIE is not set
+# CONFIG_IP_ADVANCED_ROUTER is not set
CONFIG_IP_FIB_HASH=y
-# CONFIG_IP_MULTIPLE_TABLES is not set
-# CONFIG_IP_ROUTE_MULTIPATH is not set
-# CONFIG_IP_ROUTE_VERBOSE is not set
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
# CONFIG_IP_PNP_BOOTP is not set
@@ -240,6 +259,7 @@ CONFIG_IPV6_SIT=y
# CONFIG_NETWORK_SECMARK is not set
CONFIG_NETFILTER=y
# CONFIG_NETFILTER_DEBUG is not set
+CONFIG_BRIDGE_NETFILTER=y
#
# Core Netfilter Configuration
@@ -284,6 +304,7 @@ CONFIG_NETFILTER_XT_MATCH_MAC=m
CONFIG_NETFILTER_XT_MATCH_MARK=m
CONFIG_NETFILTER_XT_MATCH_POLICY=m
CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m
+# CONFIG_NETFILTER_XT_MATCH_PHYSDEV is not set
CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m
CONFIG_NETFILTER_XT_MATCH_QUOTA=m
CONFIG_NETFILTER_XT_MATCH_REALM=m
@@ -359,13 +380,19 @@ CONFIG_IP6_NF_TARGET_REJECT=m
CONFIG_IP6_NF_MANGLE=m
CONFIG_IP6_NF_TARGET_HL=m
CONFIG_IP6_NF_RAW=m
+
+#
+# Bridge: Netfilter Configuration
+#
+# CONFIG_BRIDGE_NF_EBTABLES is not set
# CONFIG_IP_DCCP is not set
# CONFIG_IP_SCTP is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
-# CONFIG_BRIDGE is not set
+CONFIG_BRIDGE=m
CONFIG_VLAN_8021Q=m
# CONFIG_DECNET is not set
+CONFIG_LLC=m
# CONFIG_LLC2 is not set
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
@@ -521,7 +548,6 @@ CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024
#
# Misc devices
#
-# CONFIG_BLINK is not set
# CONFIG_IDE is not set
#
@@ -545,13 +571,26 @@ CONFIG_NETDEVICES=y
# CONFIG_BONDING is not set
# CONFIG_EQUALIZER is not set
CONFIG_TUN=m
-# CONFIG_PHYLIB is not set
+CONFIG_PHYLIB=y
+
+#
+# MII PHY device drivers
+#
+# CONFIG_MARVELL_PHY is not set
+# CONFIG_DAVICOM_PHY is not set
+# CONFIG_QSEMI_PHY is not set
+# CONFIG_LXT_PHY is not set
+# CONFIG_CICADA_PHY is not set
+# CONFIG_VITESSE_PHY is not set
+# CONFIG_SMSC_PHY is not set
+# CONFIG_BROADCOM_PHY is not set
+# CONFIG_FIXED_PHY is not set
#
# Ethernet (10 or 100Mbit)
#
CONFIG_NET_ETHERNET=y
-CONFIG_MII=y
+# CONFIG_MII is not set
CONFIG_MACB=y
# CONFIG_NETDEV_1000 is not set
# CONFIG_NETDEV_10000 is not set
@@ -625,7 +664,15 @@ CONFIG_UNIX98_PTYS=y
# IPMI
#
# CONFIG_IPMI_HANDLER is not set
-# CONFIG_WATCHDOG is not set
+CONFIG_WATCHDOG=y
+# CONFIG_WATCHDOG_NOWAYOUT is not set
+
+#
+# Watchdog Device Drivers
+#
+# CONFIG_SOFT_WATCHDOG is not set
+CONFIG_AT32AP700X_WDT=y
+CONFIG_AT32AP700X_WDT_TIMEOUT=2
# CONFIG_HW_RANDOM is not set
# CONFIG_RTC is not set
# CONFIG_GEN_RTC is not set
@@ -636,7 +683,42 @@ CONFIG_UNIX98_PTYS=y
# TPM devices
#
# CONFIG_TCG_TPM is not set
-# CONFIG_I2C is not set
+CONFIG_I2C=m
+CONFIG_I2C_BOARDINFO=y
+CONFIG_I2C_CHARDEV=m
+
+#
+# I2C Algorithms
+#
+CONFIG_I2C_ALGOBIT=m
+# CONFIG_I2C_ALGOPCF is not set
+# CONFIG_I2C_ALGOPCA is not set
+
+#
+# I2C Hardware Bus support
+#
+CONFIG_I2C_ATMELTWI=m
+CONFIG_I2C_ATMELTWI_BAUDRATE=100000
+CONFIG_I2C_GPIO=m
+# CONFIG_I2C_OCORES is not set
+# CONFIG_I2C_PARPORT_LIGHT is not set
+# CONFIG_I2C_SIMTEC is not set
+# CONFIG_I2C_STUB is not set
+
+#
+# Miscellaneous I2C Chip support
+#
+# CONFIG_SENSORS_DS1337 is not set
+# CONFIG_SENSORS_DS1374 is not set
+# CONFIG_SENSORS_EEPROM is not set
+# CONFIG_SENSORS_PCF8574 is not set
+# CONFIG_SENSORS_PCA9539 is not set
+# CONFIG_SENSORS_PCF8591 is not set
+# CONFIG_SENSORS_MAX6875 is not set
+# CONFIG_I2C_DEBUG_CORE is not set
+# CONFIG_I2C_DEBUG_ALGO is not set
+# CONFIG_I2C_DEBUG_BUS is not set
+# CONFIG_I2C_DEBUG_CHIP is not set
#
# SPI support
@@ -655,7 +737,7 @@ CONFIG_SPI_ATMEL=y
# SPI Protocol Masters
#
# CONFIG_SPI_AT25 is not set
-# CONFIG_SPI_SPIDEV is not set
+CONFIG_SPI_SPIDEV=m
#
# Dallas's 1-wire bus
@@ -706,8 +788,41 @@ CONFIG_SPI_ATMEL=y
#
# USB Gadget Support
#
-# CONFIG_USB_GADGET is not set
-# CONFIG_MMC is not set
+CONFIG_USB_GADGET=y
+# CONFIG_USB_GADGET_DEBUG_FILES is not set
+CONFIG_USB_GADGET_SELECTED=y
+# CONFIG_USB_GADGET_FSL_USB2 is not set
+# CONFIG_USB_GADGET_NET2280 is not set
+# CONFIG_USB_GADGET_PXA2XX is not set
+# CONFIG_USB_GADGET_GOKU is not set
+# CONFIG_USB_GADGET_LH7A40X is not set
+CONFIG_USB_GADGET_ATMEL_USBA=y
+CONFIG_USB_ATMEL_USBA=y
+# CONFIG_USB_GADGET_OMAP is not set
+# CONFIG_USB_GADGET_AT91 is not set
+# CONFIG_USB_GADGET_DUMMY_HCD is not set
+CONFIG_USB_GADGET_DUALSPEED=y
+CONFIG_USB_ZERO=m
+CONFIG_USB_ETH=m
+CONFIG_USB_ETH_RNDIS=y
+CONFIG_USB_GADGETFS=m
+CONFIG_USB_FILE_STORAGE=m
+# CONFIG_USB_FILE_STORAGE_TEST is not set
+CONFIG_USB_G_SERIAL=m
+# CONFIG_USB_MIDI_GADGET is not set
+CONFIG_MMC=y
+# CONFIG_MMC_DEBUG is not set
+# CONFIG_MMC_UNSAFE_RESUME is not set
+
+#
+# MMC/SD Card Drivers
+#
+CONFIG_MMC_BLOCK=y
+
+#
+# MMC/SD Host Controller Drivers
+#
+CONFIG_MMC_ATMELMCI=y
#
# LED devices
@@ -727,27 +842,62 @@ CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_TIMER=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
+#
+# InfiniBand support
+#
#
-# LED drivers
+# EDAC - error detection and reporting (RAS) (EXPERIMENTAL)
#
#
-# LED Triggers
+# Real Time Clock
#
+CONFIG_RTC_LIB=y
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_HCTOSYS=y
+CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
+# CONFIG_RTC_DEBUG is not set
#
-# InfiniBand support
+# RTC interfaces
#
+CONFIG_RTC_INTF_SYSFS=y
+CONFIG_RTC_INTF_PROC=y
+CONFIG_RTC_INTF_DEV=y
+# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
+# CONFIG_RTC_DRV_TEST is not set
#
-# EDAC - error detection and reporting (RAS) (EXPERIMENTAL)
+# I2C RTC drivers
#
+# CONFIG_RTC_DRV_DS1307 is not set
+# CONFIG_RTC_DRV_DS1672 is not set
+# CONFIG_RTC_DRV_MAX6900 is not set
+# CONFIG_RTC_DRV_RS5C372 is not set
+# CONFIG_RTC_DRV_ISL1208 is not set
+# CONFIG_RTC_DRV_X1205 is not set
+# CONFIG_RTC_DRV_PCF8563 is not set
+# CONFIG_RTC_DRV_PCF8583 is not set
#
-# Real Time Clock
+# SPI RTC drivers
+#
+# CONFIG_RTC_DRV_RS5C348 is not set
+# CONFIG_RTC_DRV_MAX6902 is not set
+
+#
+# Platform RTC drivers
+#
+# CONFIG_RTC_DRV_DS1553 is not set
+# CONFIG_RTC_DRV_DS1742 is not set
+# CONFIG_RTC_DRV_M48T86 is not set
+# CONFIG_RTC_DRV_V3020 is not set
+
+#
+# on-CPU RTC drivers
#
-# CONFIG_RTC_CLASS is not set
+CONFIG_RTC_DRV_AT32AP700X=y
#
# DMA Engine support
@@ -781,7 +931,8 @@ CONFIG_JBD=y
# CONFIG_OCFS2_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_ROMFS_FS is not set
-# CONFIG_INOTIFY is not set
+CONFIG_INOTIFY=y
+CONFIG_INOTIFY_USER=y
# CONFIG_QUOTA is not set
# CONFIG_DNOTIFY is not set
# CONFIG_AUTOFS_FS is not set
@@ -936,7 +1087,7 @@ CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_ENABLE_MUST_CHECK=y
CONFIG_MAGIC_SYSRQ=y
# CONFIG_UNUSED_SYMBOLS is not set
-# CONFIG_DEBUG_FS is not set
+CONFIG_DEBUG_FS=y
# CONFIG_HEADERS_CHECK is not set
CONFIG_DEBUG_KERNEL=y
# CONFIG_DEBUG_SHIRQ is not set
diff --git a/arch/avr32/configs/atstk1002_defconfig b/arch/avr32/configs/atstk1002_defconfig
index 3b977fd..3708066 100644
--- a/arch/avr32/configs/atstk1002_defconfig
+++ b/arch/avr32/configs/atstk1002_defconfig
@@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
-# Linux kernel version: 2.6.22-rc5
-# Sat Jun 23 15:32:08 2007
+# Linux kernel version: 2.6.22.atmel.2
+# Thu Jul 19 13:46:47 2007
#
CONFIG_AVR32=y
CONFIG_GENERIC_GPIO=y
@@ -80,10 +80,10 @@ CONFIG_BASE_SMALL=1
#
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
-# CONFIG_MODULE_FORCE_UNLOAD is not set
+CONFIG_MODULE_FORCE_UNLOAD=y
# CONFIG_MODVERSIONS is not set
# CONFIG_MODULE_SRCVERSION_ALL is not set
-# CONFIG_KMOD is not set
+CONFIG_KMOD=y
#
# Block layer
@@ -99,12 +99,12 @@ CONFIG_BLOCK=y
CONFIG_IOSCHED_NOOP=y
# CONFIG_IOSCHED_AS is not set
# CONFIG_IOSCHED_DEADLINE is not set
-# CONFIG_IOSCHED_CFQ is not set
+CONFIG_IOSCHED_CFQ=y
# CONFIG_DEFAULT_AS is not set
# CONFIG_DEFAULT_DEADLINE is not set
-# CONFIG_DEFAULT_CFQ is not set
-CONFIG_DEFAULT_NOOP=y
-CONFIG_DEFAULT_IOSCHED="noop"
+CONFIG_DEFAULT_CFQ=y
+# CONFIG_DEFAULT_NOOP is not set
+CONFIG_DEFAULT_IOSCHED="cfq"
#
# System Type and features
@@ -117,6 +117,11 @@ CONFIG_CPU_AT32AP7000=y
CONFIG_BOARD_ATSTK1002=y
CONFIG_BOARD_ATSTK1000=y
# CONFIG_BOARD_ATNGW100 is not set
+# CONFIG_BOARD_ATSTK1002_CUSTOM is not set
+# CONFIG_BOARD_ATSTK1002_SPI1 is not set
+# CONFIG_BOARD_ATSTK1002_J2_LED is not set
+# CONFIG_BOARD_ATSTK1002_J2_LED8 is not set
+# CONFIG_BOARD_ATSTK1002_J2_RGB is not set
CONFIG_LOADER_U_BOOT=y
#
@@ -125,6 +130,7 @@ CONFIG_LOADER_U_BOOT=y
# CONFIG_AP7000_32_BIT_SMC is not set
CONFIG_AP7000_16_BIT_SMC=y
# CONFIG_AP7000_8_BIT_SMC is not set
+CONFIG_GPIO_DEV=y
CONFIG_LOAD_ADDRESS=0x10000000
CONFIG_ENTRY_ADDRESS=0x90000000
CONFIG_PHYS_OFFSET=0x10000000
@@ -148,6 +154,7 @@ CONFIG_SPLIT_PTLOCK_CPUS=4
# CONFIG_RESOURCES_64BIT is not set
CONFIG_ZONE_DMA_FLAG=0
# CONFIG_OWNERSHIP_TRACE is not set
+CONFIG_DW_DMAC=y
# CONFIG_HZ_100 is not set
CONFIG_HZ_250=y
# CONFIG_HZ_300 is not set
@@ -156,6 +163,27 @@ CONFIG_HZ=250
CONFIG_CMDLINE=""
#
+# Power managment options
+#
+
+#
+# CPU Frequency scaling
+#
+CONFIG_CPU_FREQ=y
+CONFIG_CPU_FREQ_TABLE=y
+# CONFIG_CPU_FREQ_DEBUG is not set
+CONFIG_CPU_FREQ_STAT=m
+# CONFIG_CPU_FREQ_STAT_DETAILS is not set
+CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
+# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
+CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+CONFIG_CPU_FREQ_GOV_POWERSAVE=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
+# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set
+CONFIG_CPU_FREQ_AT32AP=y
+
+#
# Bus options
#
# CONFIG_ARCH_SUPPORTS_MSI is not set
@@ -327,6 +355,8 @@ CONFIG_MTD_PHYSMAP_BANKWIDTH=2
#
# Self-contained MTD device drivers
#
+CONFIG_MTD_DATAFLASH=m
+# CONFIG_MTD_M25P80 is not set
# CONFIG_MTD_SLRAM is not set
# CONFIG_MTD_PHRAM is not set
# CONFIG_MTD_MTDRAM is not set
@@ -373,7 +403,7 @@ CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024
#
# Misc devices
#
-# CONFIG_BLINK is not set
+CONFIG_ATMEL_SSC=m
# CONFIG_IDE is not set
#
@@ -397,13 +427,26 @@ CONFIG_DUMMY=y
# CONFIG_BONDING is not set
# CONFIG_EQUALIZER is not set
CONFIG_TUN=m
-# CONFIG_PHYLIB is not set
+CONFIG_PHYLIB=y
+
+#
+# MII PHY device drivers
+#
+# CONFIG_MARVELL_PHY is not set
+# CONFIG_DAVICOM_PHY is not set
+# CONFIG_QSEMI_PHY is not set
+CONFIG_LXT_PHY=y
+# CONFIG_CICADA_PHY is not set
+# CONFIG_VITESSE_PHY is not set
+# CONFIG_SMSC_PHY is not set
+# CONFIG_BROADCOM_PHY is not set
+# CONFIG_FIXED_PHY is not set
#
# Ethernet (10 or 100Mbit)
#
CONFIG_NET_ETHERNET=y
-CONFIG_MII=y
+# CONFIG_MII is not set
CONFIG_MACB=y
# CONFIG_NETDEV_1000 is not set
# CONFIG_NETDEV_10000 is not set
@@ -443,7 +486,42 @@ CONFIG_SLHC=m
#
# Input device support
#
-# CONFIG_INPUT is not set
+CONFIG_INPUT=m
+# CONFIG_INPUT_FF_MEMLESS is not set
+CONFIG_INPUT_POLLDEV=m
+
+#
+# Userland interfaces
+#
+CONFIG_INPUT_MOUSEDEV=m
+CONFIG_INPUT_MOUSEDEV_PSAUX=y
+CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
+CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
+# CONFIG_INPUT_JOYDEV is not set
+# CONFIG_INPUT_TSDEV is not set
+# CONFIG_INPUT_EVDEV is not set
+# CONFIG_INPUT_EVBUG is not set
+
+#
+# Input Device Drivers
+#
+CONFIG_INPUT_KEYBOARD=y
+# CONFIG_KEYBOARD_ATKBD is not set
+# CONFIG_KEYBOARD_SUNKBD is not set
+# CONFIG_KEYBOARD_LKKBD is not set
+# CONFIG_KEYBOARD_XTKBD is not set
+# CONFIG_KEYBOARD_NEWTON is not set
+# CONFIG_KEYBOARD_STOWAWAY is not set
+CONFIG_KEYBOARD_GPIO=m
+CONFIG_INPUT_MOUSE=y
+# CONFIG_MOUSE_PS2 is not set
+# CONFIG_MOUSE_SERIAL is not set
+# CONFIG_MOUSE_VSXXXAA is not set
+CONFIG_MOUSE_GPIO=m
+# CONFIG_INPUT_JOYSTICK is not set
+# CONFIG_INPUT_TABLET is not set
+# CONFIG_INPUT_TOUCHSCREEN is not set
+# CONFIG_INPUT_MISC is not set
#
# Hardware I/O ports
@@ -477,7 +555,15 @@ CONFIG_UNIX98_PTYS=y
# IPMI
#
# CONFIG_IPMI_HANDLER is not set
-# CONFIG_WATCHDOG is not set
+CONFIG_WATCHDOG=y
+# CONFIG_WATCHDOG_NOWAYOUT is not set
+
+#
+# Watchdog Device Drivers
+#
+# CONFIG_SOFT_WATCHDOG is not set
+CONFIG_AT32AP700X_WDT=y
+CONFIG_AT32AP700X_WDT_TIMEOUT=2
# CONFIG_HW_RANDOM is not set
# CONFIG_RTC is not set
# CONFIG_GEN_RTC is not set
@@ -488,13 +574,61 @@ CONFIG_UNIX98_PTYS=y
# TPM devices
#
# CONFIG_TCG_TPM is not set
-# CONFIG_I2C is not set
+CONFIG_I2C=m
+CONFIG_I2C_BOARDINFO=y
+CONFIG_I2C_CHARDEV=m
+
+#
+# I2C Algorithms
+#
+CONFIG_I2C_ALGOBIT=m
+# CONFIG_I2C_ALGOPCF is not set
+# CONFIG_I2C_ALGOPCA is not set
+
+#
+# I2C Hardware Bus support
+#
+CONFIG_I2C_ATMELTWI=m
+CONFIG_I2C_ATMELTWI_BAUDRATE=100000
+CONFIG_I2C_GPIO=m
+# CONFIG_I2C_OCORES is not set
+# CONFIG_I2C_PARPORT_LIGHT is not set
+# CONFIG_I2C_SIMTEC is not set
+# CONFIG_I2C_STUB is not set
+
+#
+# Miscellaneous I2C Chip support
+#
+# CONFIG_SENSORS_DS1337 is not set
+# CONFIG_SENSORS_DS1374 is not set
+# CONFIG_SENSORS_EEPROM is not set
+# CONFIG_SENSORS_PCF8574 is not set
+# CONFIG_SENSORS_PCA9539 is not set
+# CONFIG_SENSORS_PCF8591 is not set
+# CONFIG_SENSORS_MAX6875 is not set
+# CONFIG_I2C_DEBUG_CORE is not set
+# CONFIG_I2C_DEBUG_ALGO is not set
+# CONFIG_I2C_DEBUG_BUS is not set
+# CONFIG_I2C_DEBUG_CHIP is not set
#
# SPI support
#
-# CONFIG_SPI is not set
-# CONFIG_SPI_MASTER is not set
+CONFIG_SPI=y
+# CONFIG_SPI_DEBUG is not set
+CONFIG_SPI_MASTER=y
+
+#
+# SPI Master Controller Drivers
+#
+CONFIG_SPI_ATMEL=y
+# CONFIG_SPI_BITBANG is not set
+
+#
+# SPI Protocol Masters
+#
+# CONFIG_SPI_AT25 is not set
+CONFIG_SPI_SPIDEV=m
#
# Dallas's 1-wire bus
@@ -517,19 +651,91 @@ CONFIG_UNIX98_PTYS=y
#
# Graphics support
#
-# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
+CONFIG_BACKLIGHT_LCD_SUPPORT=y
+CONFIG_LCD_CLASS_DEVICE=y
+CONFIG_LCD_LTV350QV=y
+# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
#
# Display device support
#
# CONFIG_DISPLAY_SUPPORT is not set
# CONFIG_VGASTATE is not set
-# CONFIG_FB is not set
+CONFIG_FB=y
+# CONFIG_FIRMWARE_EDID is not set
+# CONFIG_FB_DDC is not set
+CONFIG_FB_CFB_FILLRECT=y
+CONFIG_FB_CFB_COPYAREA=y
+CONFIG_FB_CFB_IMAGEBLIT=y
+# CONFIG_FB_SYS_FILLRECT is not set
+# CONFIG_FB_SYS_COPYAREA is not set
+# CONFIG_FB_SYS_IMAGEBLIT is not set
+# CONFIG_FB_SYS_FOPS is not set
+CONFIG_FB_DEFERRED_IO=y
+# CONFIG_FB_SVGALIB is not set
+# CONFIG_FB_MACMODES is not set
+# CONFIG_FB_BACKLIGHT is not set
+# CONFIG_FB_MODE_HELPERS is not set
+# CONFIG_FB_TILEBLITTING is not set
+
+#
+# Frame buffer hardware drivers
+#
+# CONFIG_FB_S1D13XXX is not set
+CONFIG_FB_ATMEL=y
+# CONFIG_FB_VIRTUAL is not set
+# CONFIG_LOGO is not set
#
# Sound
#
-# CONFIG_SOUND is not set
+CONFIG_SOUND=m
+
+#
+# Advanced Linux Sound Architecture
+#
+CONFIG_SND=m
+CONFIG_SND_TIMER=m
+CONFIG_SND_PCM=m
+# CONFIG_SND_SEQUENCER is not set
+CONFIG_SND_OSSEMUL=y
+CONFIG_SND_MIXER_OSS=m
+CONFIG_SND_PCM_OSS=m
+CONFIG_SND_PCM_OSS_PLUGINS=y
+# CONFIG_SND_DYNAMIC_MINORS is not set
+# CONFIG_SND_SUPPORT_OLD_API is not set
+CONFIG_SND_VERBOSE_PROCFS=y
+# CONFIG_SND_VERBOSE_PRINTK is not set
+# CONFIG_SND_DEBUG is not set
+
+#
+# Generic devices
+#
+# CONFIG_SND_DUMMY is not set
+# CONFIG_SND_MTPAV is not set
+# CONFIG_SND_SERIAL_U16550 is not set
+# CONFIG_SND_MPU401 is not set
+
+#
+# SPI devices
+#
+CONFIG_SND_AT73C213=m
+CONFIG_SND_AT73C213_TARGET_BITRATE=48000
+
+#
+# System on Chip audio support
+#
+# CONFIG_SND_SOC is not set
+
+#
+# Open Sound System
+#
+# CONFIG_SOUND_PRIME is not set
+
+#
+# HID Devices
+#
+# CONFIG_HID is not set
#
# USB support
@@ -545,21 +751,59 @@ CONFIG_UNIX98_PTYS=y
#
# USB Gadget Support
#
-# CONFIG_USB_GADGET is not set
-# CONFIG_MMC is not set
+CONFIG_USB_GADGET=y
+# CONFIG_USB_GADGET_DEBUG_FILES is not set
+CONFIG_USB_GADGET_SELECTED=y
+# CONFIG_USB_GADGET_FSL_USB2 is not set
+# CONFIG_USB_GADGET_NET2280 is not set
+# CONFIG_USB_GADGET_PXA2XX is not set
+# CONFIG_USB_GADGET_GOKU is not set
+# CONFIG_USB_GADGET_LH7A40X is not set
+CONFIG_USB_GADGET_ATMEL_USBA=y
+CONFIG_USB_ATMEL_USBA=y
+# CONFIG_USB_GADGET_OMAP is not set
+# CONFIG_USB_GADGET_AT91 is not set
+# CONFIG_USB_GADGET_DUMMY_HCD is not set
+CONFIG_USB_GADGET_DUALSPEED=y
+CONFIG_USB_ZERO=m
+CONFIG_USB_ETH=m
+CONFIG_USB_ETH_RNDIS=y
+CONFIG_USB_GADGETFS=m
+CONFIG_USB_FILE_STORAGE=m
+# CONFIG_USB_FILE_STORAGE_TEST is not set
+CONFIG_USB_G_SERIAL=m
+# CONFIG_USB_MIDI_GADGET is not set
+CONFIG_MMC=y
+# CONFIG_MMC_DEBUG is not set
+# CONFIG_MMC_UNSAFE_RESUME is not set
+
+#
+# MMC/SD Card Drivers
+#
+CONFIG_MMC_BLOCK=y
+
+#
+# MMC/SD Host Controller Drivers
+#
+CONFIG_MMC_ATMELMCI=y
#
# LED devices
#
-# CONFIG_NEW_LEDS is not set
+CONFIG_NEW_LEDS=y
+CONFIG_LEDS_CLASS=m
#
# LED drivers
#
+CONFIG_LEDS_GPIO=m
#
# LED Triggers
#
+CONFIG_LEDS_TRIGGERS=y
+CONFIG_LEDS_TRIGGER_TIMER=m
+CONFIG_LEDS_TRIGGER_HEARTBEAT=m
#
# InfiniBand support
@@ -572,7 +816,50 @@ CONFIG_UNIX98_PTYS=y
#
# Real Time Clock
#
-# CONFIG_RTC_CLASS is not set
+CONFIG_RTC_LIB=y
+CONFIG_RTC_CLASS=y
+# CONFIG_RTC_HCTOSYS is not set
+# CONFIG_RTC_DEBUG is not set
+
+#
+# RTC interfaces
+#
+CONFIG_RTC_INTF_SYSFS=y
+CONFIG_RTC_INTF_PROC=y
+CONFIG_RTC_INTF_DEV=y
+# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
+# CONFIG_RTC_DRV_TEST is not set
+
+#
+# I2C RTC drivers
+#
+# CONFIG_RTC_DRV_DS1307 is not set
+# CONFIG_RTC_DRV_DS1672 is not set
+# CONFIG_RTC_DRV_MAX6900 is not set
+# CONFIG_RTC_DRV_RS5C372 is not set
+# CONFIG_RTC_DRV_ISL1208 is not set
+# CONFIG_RTC_DRV_X1205 is not set
+# CONFIG_RTC_DRV_PCF8563 is not set
+# CONFIG_RTC_DRV_PCF8583 is not set
+
+#
+# SPI RTC drivers
+#
+# CONFIG_RTC_DRV_RS5C348 is not set
+# CONFIG_RTC_DRV_MAX6902 is not set
+
+#
+# Platform RTC drivers
+#
+# CONFIG_RTC_DRV_DS1553 is not set
+# CONFIG_RTC_DRV_DS1742 is not set
+# CONFIG_RTC_DRV_M48T86 is not set
+# CONFIG_RTC_DRV_V3020 is not set
+
+#
+# on-CPU RTC drivers
+#
+CONFIG_RTC_DRV_AT32AP700X=y
#
# DMA Engine support
@@ -590,11 +877,14 @@ CONFIG_UNIX98_PTYS=y
#
# File systems
#
-CONFIG_EXT2_FS=m
+CONFIG_EXT2_FS=y
# CONFIG_EXT2_FS_XATTR is not set
# CONFIG_EXT2_FS_XIP is not set
-# CONFIG_EXT3_FS is not set
+CONFIG_EXT3_FS=y
+# CONFIG_EXT3_FS_XATTR is not set
# CONFIG_EXT4DEV_FS is not set
+CONFIG_JBD=y
+# CONFIG_JBD_DEBUG is not set
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
# CONFIG_FS_POSIX_ACL is not set
@@ -609,7 +899,7 @@ CONFIG_INOTIFY_USER=y
# CONFIG_DNOTIFY is not set
# CONFIG_AUTOFS_FS is not set
# CONFIG_AUTOFS4_FS is not set
-# CONFIG_FUSE_FS is not set
+CONFIG_FUSE_FS=m
#
# CD-ROM/DVD Filesystems
@@ -638,7 +928,7 @@ CONFIG_TMPFS=y
# CONFIG_TMPFS_POSIX_ACL is not set
# CONFIG_HUGETLB_PAGE is not set
CONFIG_RAMFS=y
-CONFIG_CONFIGFS_FS=m
+CONFIG_CONFIGFS_FS=y
#
# Miscellaneous filesystems
@@ -683,8 +973,14 @@ CONFIG_SUNRPC=y
# CONFIG_SUNRPC_BIND34 is not set
# CONFIG_RPCSEC_GSS_KRB5 is not set
# CONFIG_RPCSEC_GSS_SPKM3 is not set
-# CONFIG_SMB_FS is not set
-# CONFIG_CIFS is not set
+CONFIG_SMB_FS=m
+# CONFIG_SMB_NLS_DEFAULT is not set
+CONFIG_CIFS=m
+# CONFIG_CIFS_STATS is not set
+# CONFIG_CIFS_WEAK_PW_HASH is not set
+# CONFIG_CIFS_XATTR is not set
+# CONFIG_CIFS_DEBUG2 is not set
+# CONFIG_CIFS_EXPERIMENTAL is not set
# CONFIG_NCP_FS is not set
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS is not set
diff --git a/arch/avr32/drivers/Makefile b/arch/avr32/drivers/Makefile
new file mode 100644
index 0000000..b429b75
--- /dev/null
+++ b/arch/avr32/drivers/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_DW_DMAC) += dw-dmac.o
diff --git a/arch/avr32/drivers/dw-dmac.c b/arch/avr32/drivers/dw-dmac.c
new file mode 100644
index 0000000..224eb30
--- /dev/null
+++ b/arch/avr32/drivers/dw-dmac.c
@@ -0,0 +1,761 @@
+/*
+ * Driver for the Synopsys DesignWare DMA Controller
+ *
+ * Copyright (C) 2005-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/dmapool.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <asm/dma-controller.h>
+#include <asm/io.h>
+
+#include "dw-dmac.h"
+
+#define DMAC_NR_CHANNELS 3
+#define DMAC_MAX_BLOCKSIZE 4095
+
+enum {
+ CH_STATE_FREE = 0,
+ CH_STATE_ALLOCATED,
+ CH_STATE_BUSY,
+};
+
+struct dw_dma_lli {
+ dma_addr_t sar;
+ dma_addr_t dar;
+ dma_addr_t llp;
+ u32 ctllo;
+ u32 ctlhi;
+ u32 sstat;
+ u32 dstat;
+};
+
+struct dw_dma_block {
+ struct dw_dma_lli *lli_vaddr;
+ dma_addr_t lli_dma_addr;
+};
+
+struct dw_dma_channel {
+ unsigned int state;
+ int is_cyclic;
+ struct dma_request_sg *req_sg;
+ struct dma_request_cyclic *req_cyclic;
+ unsigned int nr_blocks;
+ int direction;
+ struct dw_dma_block *block;
+};
+
+struct dw_dma_controller {
+ spinlock_t lock;
+ void * __iomem regs;
+ struct dma_pool *lli_pool;
+ struct clk *hclk;
+ struct dma_controller dma;
+ struct dw_dma_channel channel[DMAC_NR_CHANNELS];
+};
+#define to_dw_dmac(dmac) container_of(dmac, struct dw_dma_controller, dma)
+
+#define dmac_writel_hi(dmac, reg, value) \
+ __raw_writel((value), (dmac)->regs + DW_DMAC_##reg + 4)
+#define dmac_readl_hi(dmac, reg) \
+ __raw_readl((dmac)->regs + DW_DMAC_##reg + 4)
+#define dmac_writel_lo(dmac, reg, value) \
+ __raw_writel((value), (dmac)->regs + DW_DMAC_##reg)
+#define dmac_readl_lo(dmac, reg) \
+ __raw_readl((dmac)->regs + DW_DMAC_##reg)
+#define dmac_chan_writel_hi(dmac, chan, reg, value) \
+ __raw_writel((value), ((dmac)->regs + 0x58 * (chan) \
+ + DW_DMAC_CHAN_##reg + 4))
+#define dmac_chan_readl_hi(dmac, chan, reg) \
+ __raw_readl((dmac)->regs + 0x58 * (chan) + DW_DMAC_CHAN_##reg + 4)
+#define dmac_chan_writel_lo(dmac, chan, reg, value) \
+ __raw_writel((value), (dmac)->regs + 0x58 * (chan) + DW_DMAC_CHAN_##reg)
+#define dmac_chan_readl_lo(dmac, chan, reg) \
+ __raw_readl((dmac)->regs + 0x58 * (chan) + DW_DMAC_CHAN_##reg)
+#define set_channel_bit(dmac, reg, chan) \
+ dmac_writel_lo(dmac, reg, (1 << (chan)) | (1 << ((chan) + 8)))
+#define clear_channel_bit(dmac, reg, chan) \
+ dmac_writel_lo(dmac, reg, (0 << (chan)) | (1 << ((chan) + 8)))
+
+static int dmac_alloc_channel(struct dma_controller *_dmac)
+{
+ struct dw_dma_controller *dmac = to_dw_dmac(_dmac);
+ struct dw_dma_channel *chan;
+ unsigned long flags;
+ int i;
+
+ spin_lock_irqsave(&dmac->lock, flags);
+ for (i = 0; i < DMAC_NR_CHANNELS; i++)
+ if (dmac->channel[i].state == CH_STATE_FREE)
+ break;
+
+ if (i < DMAC_NR_CHANNELS) {
+ chan = &dmac->channel[i];
+ chan->state = CH_STATE_ALLOCATED;
+ } else {
+ i = -EBUSY;
+ }
+
+ spin_unlock_irqrestore(&dmac->lock, flags);
+
+ return i;
+}
+
+static void dmac_release_channel(struct dma_controller *_dmac, int channel)
+{
+ struct dw_dma_controller *dmac = to_dw_dmac(_dmac);
+
+ BUG_ON(channel >= DMAC_NR_CHANNELS
+ || dmac->channel[channel].state != CH_STATE_ALLOCATED);
+
+ dmac->channel[channel].state = CH_STATE_FREE;
+}
+
+static struct dw_dma_block *allocate_blocks(struct dw_dma_controller *dmac,
+ unsigned int nr_blocks)
+{
+ struct dw_dma_block *block;
+ void *p;
+ unsigned int i;
+
+ block = kmalloc(nr_blocks * sizeof(*block),
+ GFP_KERNEL);
+ if (unlikely(!block))
+ return NULL;
+
+ for (i = 0; i < nr_blocks; i++) {
+ p = dma_pool_alloc(dmac->lli_pool, GFP_KERNEL,
+ &block[i].lli_dma_addr);
+ block[i].lli_vaddr = p;
+ if (unlikely(!p))
+ goto fail;
+ }
+
+ return block;
+
+fail:
+ for (i = 0; i < nr_blocks; i++) {
+ if (!block[i].lli_vaddr)
+ break;
+ dma_pool_free(dmac->lli_pool, block[i].lli_vaddr,
+ block[i].lli_dma_addr);
+ }
+ kfree(block);
+ return NULL;
+}
+
+static void cleanup_channel(struct dw_dma_controller *dmac,
+ struct dw_dma_channel *chan)
+{
+ unsigned int i;
+
+ if (chan->nr_blocks > 1) {
+ for (i = 0; i < chan->nr_blocks; i++)
+ dma_pool_free(dmac->lli_pool, chan->block[i].lli_vaddr,
+ chan->block[i].lli_dma_addr);
+ kfree(chan->block);
+ }
+
+ chan->state = CH_STATE_ALLOCATED;
+}
+
+static int dmac_prepare_request_sg(struct dma_controller *_dmac,
+ struct dma_request_sg *req)
+{
+ struct dw_dma_controller *dmac = to_dw_dmac(_dmac);
+ struct dw_dma_channel *chan;
+ unsigned long ctlhi, ctllo, cfghi, cfglo;
+ unsigned long block_size;
+ unsigned int nr_blocks;
+ int ret, i, direction;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dmac->lock, flags);
+
+ ret = -EINVAL;
+ if (req->req.channel >= DMAC_NR_CHANNELS
+ || dmac->channel[req->req.channel].state != CH_STATE_ALLOCATED
+ || req->block_size > DMAC_MAX_BLOCKSIZE) {
+ spin_unlock_irqrestore(&dmac->lock, flags);
+ return -EINVAL;
+ }
+
+ chan = &dmac->channel[req->req.channel];
+ chan->state = CH_STATE_BUSY;
+ chan->req_sg = req;
+ chan->is_cyclic = 0;
+
+ /*
+ * We have marked the channel as busy, so no need to keep the
+ * lock as long as we only touch the channel-specific
+ * registers
+ */
+ spin_unlock_irqrestore(&dmac->lock, flags);
+
+ /*
+ * There may be limitations in the driver and/or the DMA
+ * controller that prevents us from sending a whole
+ * scatterlist item in one go. Taking this into account,
+ * calculate the number of block transfers we need to set up.
+ *
+ * FIXME: Let the peripheral driver know about the maximum
+ * block size we support. We really don't want to use a
+ * different block size than what was suggested by the
+ * peripheral.
+ *
+ * Each block will get its own Linked List Item (LLI) below.
+ */
+ block_size = req->block_size;
+ nr_blocks = req->nr_blocks;
+ pr_debug("block_size %lu, nr_blocks %u nr_sg = %u\n",
+ block_size, nr_blocks, req->nr_sg);
+
+ BUG_ON(nr_blocks == 0);
+ chan->nr_blocks = nr_blocks;
+
+ ret = -EINVAL;
+ cfglo = cfghi = 0;
+ switch (req->direction) {
+ case DMA_DIR_MEM_TO_PERIPH:
+ direction = DMA_TO_DEVICE;
+ cfghi = req->periph_id << (43 - 32);
+ break;
+
+ case DMA_DIR_PERIPH_TO_MEM:
+ direction = DMA_FROM_DEVICE;
+ cfghi = req->periph_id << (39 - 32);
+ break;
+ default:
+ goto out_unclaim_channel;
+ }
+
+ chan->direction = direction;
+
+ dmac_chan_writel_hi(dmac, req->req.channel, CFG, cfghi);
+ dmac_chan_writel_lo(dmac, req->req.channel, CFG, cfglo);
+
+ ctlhi = block_size >> req->width;
+ ctllo = ((req->direction << 20)
+ // | (1 << 14) | (1 << 11) // source/dest burst trans len
+ | (req->width << 4) | (req->width << 1)
+ | (1 << 0)); // interrupt enable
+
+ if (nr_blocks == 1) {
+ /* Only one block: No need to use block chaining */
+ if (direction == DMA_TO_DEVICE) {
+ dmac_chan_writel_lo(dmac, req->req.channel, SAR,
+ req->sg->dma_address);
+ dmac_chan_writel_lo(dmac, req->req.channel, DAR,
+ req->data_reg);
+ ctllo |= 2 << 7; // no dst increment
+ } else {
+ dmac_chan_writel_lo(dmac, req->req.channel, SAR,
+ req->data_reg);
+ dmac_chan_writel_lo(dmac, req->req.channel, DAR,
+ req->sg->dma_address);
+ ctllo |= 2 << 9; // no src increment
+ }
+ dmac_chan_writel_lo(dmac, req->req.channel, CTL, ctllo);
+ dmac_chan_writel_hi(dmac, req->req.channel, CTL, ctlhi);
+ pr_debug("ctl hi:lo 0x%lx:%lx\n", ctlhi, ctllo);
+ } else {
+ struct dw_dma_lli *lli, *lli_prev = NULL;
+ int j = 0, offset = 0;
+
+ ret = -ENOMEM;
+ chan->block = allocate_blocks(dmac, nr_blocks);
+ if (!chan->block)
+ goto out_unclaim_channel;
+
+ if (direction == DMA_TO_DEVICE)
+ ctllo |= 1 << 28 | 1 << 27 | 2 << 7;
+ else
+ ctllo |= 1 << 28 | 1 << 27 | 2 << 9;
+
+ /*
+ * Map scatterlist items to blocks. One scatterlist
+ * item may need more than one block for the reasons
+ * mentioned above.
+ */
+ for (i = 0; i < nr_blocks; i++) {
+ lli = chan->block[i].lli_vaddr;
+ if (lli_prev) {
+ lli_prev->llp = chan->block[i].lli_dma_addr;
+ pr_debug("lli[%d] (0x%p/0x%x): 0x%x 0x%x 0x%x 0x%x 0x%x\n",
+ i - 1, chan->block[i - 1].lli_vaddr,
+ chan->block[i - 1].lli_dma_addr,
+ lli_prev->sar, lli_prev->dar, lli_prev->llp,
+ lli_prev->ctllo, lli_prev->ctlhi);
+ }
+ lli->llp = 0;
+ lli->ctllo = ctllo;
+ lli->ctlhi = ctlhi;
+ if (direction == DMA_TO_DEVICE) {
+ lli->sar = req->sg[j].dma_address + offset;
+ lli->dar = req->data_reg;
+ } else {
+ lli->sar = req->data_reg;
+ lli->dar = req->sg[j].dma_address + offset;
+ }
+ lli_prev = lli;
+
+ offset += block_size;
+ if (offset > req->sg[j].length) {
+ j++;
+ offset = 0;
+ }
+ }
+
+ pr_debug("lli[%d] (0x%p/0x%x): 0x%x 0x%x 0x%x 0x%x 0x%x\n",
+ i - 1, chan->block[i - 1].lli_vaddr,
+ chan->block[i - 1].lli_dma_addr, lli_prev->sar,
+ lli_prev->dar, lli_prev->llp,
+ lli_prev->ctllo, lli_prev->ctlhi);
+
+ /*
+ * SAR, DAR and CTL are initialized from the LLI. We
+ * only have to enable the LLI bits in CTL.
+ */
+ dmac_chan_writel_hi(dmac, req->req.channel, CTL, 0);
+ dmac_chan_writel_lo(dmac, req->req.channel, LLP,
+ chan->block[0].lli_dma_addr);
+ dmac_chan_writel_lo(dmac, req->req.channel, CTL, 1 << 28 | 1 << 27);
+ }
+
+ set_channel_bit(dmac, MASK_XFER, req->req.channel);
+ set_channel_bit(dmac, MASK_ERROR, req->req.channel);
+ if (req->req.block_complete)
+ set_channel_bit(dmac, MASK_BLOCK, req->req.channel);
+ else
+ clear_channel_bit(dmac, MASK_BLOCK, req->req.channel);
+
+ return 0;
+
+out_unclaim_channel:
+ chan->state = CH_STATE_ALLOCATED;
+ return ret;
+}
+
+static int dmac_prepare_request_cyclic(struct dma_controller *_dmac,
+ struct dma_request_cyclic *req)
+{
+ struct dw_dma_controller *dmac = to_dw_dmac(_dmac);
+ struct dw_dma_channel *chan;
+ unsigned long ctlhi, ctllo, cfghi, cfglo;
+ unsigned long block_size;
+ int ret, i, direction;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dmac->lock, flags);
+
+ block_size = (req->buffer_size/req->periods) >> req->width;
+
+ ret = -EINVAL;
+ if (req->req.channel >= DMAC_NR_CHANNELS
+ || dmac->channel[req->req.channel].state != CH_STATE_ALLOCATED
+ || (req->periods == 0)
+ || block_size > DMAC_MAX_BLOCKSIZE) {
+ spin_unlock_irqrestore(&dmac->lock, flags);
+ return -EINVAL;
+ }
+
+ chan = &dmac->channel[req->req.channel];
+ chan->state = CH_STATE_BUSY;
+ chan->is_cyclic = 1;
+ chan->req_cyclic = req;
+
+ /*
+ * We have marked the channel as busy, so no need to keep the
+ * lock as long as we only touch the channel-specific
+ * registers
+ */
+ spin_unlock_irqrestore(&dmac->lock, flags);
+
+ /*
+ Setup
+ */
+ BUG_ON(req->buffer_size % req->periods);
+ /* printk(KERN_INFO "block_size = %lu, periods = %u\n", block_size, req->periods); */
+
+ chan->nr_blocks = req->periods;
+
+ ret = -EINVAL;
+ cfglo = cfghi = 0;
+ switch (req->direction) {
+ case DMA_DIR_MEM_TO_PERIPH:
+ direction = DMA_TO_DEVICE;
+ cfghi = req->periph_id << (43 - 32);
+ break;
+
+ case DMA_DIR_PERIPH_TO_MEM:
+ direction = DMA_FROM_DEVICE;
+ cfghi = req->periph_id << (39 - 32);
+ break;
+ default:
+ goto out_unclaim_channel;
+ }
+
+ chan->direction = direction;
+
+ dmac_chan_writel_hi(dmac, req->req.channel, CFG, cfghi);
+ dmac_chan_writel_lo(dmac, req->req.channel, CFG, cfglo);
+
+ ctlhi = block_size;
+ ctllo = ((req->direction << 20)
+ | (req->width << 4) | (req->width << 1)
+ | (1 << 0)); // interrupt enable
+
+ {
+ struct dw_dma_lli *lli = NULL, *lli_prev = NULL;
+
+ ret = -ENOMEM;
+ chan->block = allocate_blocks(dmac, req->periods);
+ if (!chan->block)
+ goto out_unclaim_channel;
+
+ if (direction == DMA_TO_DEVICE)
+ ctllo |= 1 << 28 | 1 << 27 | 2 << 7;
+ else
+ ctllo |= 1 << 28 | 1 << 27 | 2 << 9;
+
+ /*
+ * Set up a linked list items where each period gets
+ * an item. The linked list item for the last period
+ * points back to the star of the buffer making a
+ * cyclic buffer.
+ */
+ for (i = 0; i < req->periods; i++) {
+ lli = chan->block[i].lli_vaddr;
+ if (lli_prev) {
+ lli_prev->llp = chan->block[i].lli_dma_addr;
+ /* printk(KERN_INFO "lli[%d] (0x%p/0x%x): 0x%x 0x%x 0x%x 0x%x 0x%x\n",
+ i - 1, chan->block[i - 1].lli_vaddr,
+ chan->block[i - 1].lli_dma_addr,
+ lli_prev->sar, lli_prev->dar, lli_prev->llp,
+ lli_prev->ctllo, lli_prev->ctlhi);*/
+ }
+ lli->llp = 0;
+ lli->ctllo = ctllo;
+ lli->ctlhi = ctlhi;
+ if (direction == DMA_TO_DEVICE) {
+ lli->sar = req->buffer_start + i*(block_size << req->width);
+ lli->dar = req->data_reg;
+ } else {
+ lli->sar = req->data_reg;
+ lli->dar = req->buffer_start + i*(block_size << req->width);
+ }
+ lli_prev = lli;
+ }
+ lli->llp = chan->block[0].lli_dma_addr;
+
+ /*printk(KERN_INFO "lli[%d] (0x%p/0x%x): 0x%x 0x%x 0x%x 0x%x 0x%x\n",
+ i - 1, chan->block[i - 1].lli_vaddr,
+ chan->block[i - 1].lli_dma_addr, lli_prev->sar,
+ lli_prev->dar, lli_prev->llp,
+ lli_prev->ctllo, lli_prev->ctlhi); */
+
+ /*
+ * SAR, DAR and CTL are initialized from the LLI. We
+ * only have to enable the LLI bits in CTL.
+ */
+ dmac_chan_writel_lo(dmac, req->req.channel, LLP,
+ chan->block[0].lli_dma_addr);
+ dmac_chan_writel_lo(dmac, req->req.channel, CTL, 1 << 28 | 1 << 27);
+ }
+
+ clear_channel_bit(dmac, MASK_XFER, req->req.channel);
+ set_channel_bit(dmac, MASK_ERROR, req->req.channel);
+ if (req->req.block_complete)
+ set_channel_bit(dmac, MASK_BLOCK, req->req.channel);
+ else
+ clear_channel_bit(dmac, MASK_BLOCK, req->req.channel);
+
+ return 0;
+
+out_unclaim_channel:
+ chan->state = CH_STATE_ALLOCATED;
+ return ret;
+}
+
+static int dmac_start_request(struct dma_controller *_dmac,
+ unsigned int channel)
+{
+ struct dw_dma_controller *dmac = to_dw_dmac(_dmac);
+
+ BUG_ON(channel >= DMAC_NR_CHANNELS);
+
+ set_channel_bit(dmac, CH_EN, channel);
+
+ return 0;
+}
+
+static dma_addr_t dmac_get_current_pos(struct dma_controller *_dmac,
+ unsigned int channel)
+{
+ struct dw_dma_controller *dmac = to_dw_dmac(_dmac);
+ struct dw_dma_channel *chan;
+ dma_addr_t current_pos;
+
+ BUG_ON(channel >= DMAC_NR_CHANNELS);
+
+ chan = &dmac->channel[channel];
+
+ switch (chan->direction) {
+ case DMA_TO_DEVICE:
+ current_pos = dmac_chan_readl_lo(dmac, channel, SAR);
+ break;
+ case DMA_FROM_DEVICE:
+ current_pos = dmac_chan_readl_lo(dmac, channel, DAR);
+ break;
+ default:
+ return 0;
+ }
+
+
+ if (!current_pos) {
+ if (chan->is_cyclic) {
+ current_pos = chan->req_cyclic->buffer_start;
+ } else {
+ current_pos = chan->req_sg->sg->dma_address;
+ }
+ }
+
+ return current_pos;
+}
+
+
+static int dmac_stop_request(struct dma_controller *_dmac,
+ unsigned int channel)
+{
+ struct dw_dma_controller *dmac = to_dw_dmac(_dmac);
+ struct dw_dma_channel *chan;
+
+ BUG_ON(channel >= DMAC_NR_CHANNELS);
+
+ chan = &dmac->channel[channel];
+ pr_debug("stop: st%u s%08x d%08x l%08x ctl0x%08x:0x%08x\n",
+ chan->state, dmac_chan_readl_lo(dmac, channel, SAR),
+ dmac_chan_readl_lo(dmac, channel, DAR),
+ dmac_chan_readl_lo(dmac, channel, LLP),
+ dmac_chan_readl_hi(dmac, channel, CTL),
+ dmac_chan_readl_lo(dmac, channel, CTL));
+
+ if (chan->state == CH_STATE_BUSY) {
+ clear_channel_bit(dmac, CH_EN, channel);
+ cleanup_channel(dmac, &dmac->channel[channel]);
+ }
+
+ return 0;
+}
+
+
+static void dmac_block_complete(struct dw_dma_controller *dmac)
+{
+ struct dw_dma_channel *chan;
+ unsigned long status, chanid;
+
+ status = dmac_readl_lo(dmac, STATUS_BLOCK);
+
+ while (status) {
+ struct dma_request *req;
+ chanid = __ffs(status);
+ chan = &dmac->channel[chanid];
+
+ if (chan->is_cyclic) {
+ BUG_ON(!chan->req_cyclic
+ || !chan->req_cyclic->req.block_complete);
+ req = &chan->req_cyclic->req;
+ } else {
+ BUG_ON(!chan->req_sg || !chan->req_sg->req.block_complete);
+ req = &chan->req_sg->req;
+ }
+ dmac_writel_lo(dmac, CLEAR_BLOCK, 1 << chanid);
+ req->block_complete(req);
+ status = dmac_readl_lo(dmac, STATUS_BLOCK);
+ }
+}
+
+static void dmac_xfer_complete(struct dw_dma_controller *dmac)
+{
+ struct dw_dma_channel *chan;
+ struct dma_request *req;
+ unsigned long status, chanid;
+
+ status = dmac_readl_lo(dmac, STATUS_XFER);
+
+ while (status) {
+ chanid = __ffs(status);
+ chan = &dmac->channel[chanid];
+
+ dmac_writel_lo(dmac, CLEAR_XFER, 1 << chanid);
+
+ req = &chan->req_sg->req;
+ BUG_ON(!req);
+ cleanup_channel(dmac, chan);
+ if (req->xfer_complete)
+ req->xfer_complete(req);
+
+ status = dmac_readl_lo(dmac, STATUS_XFER);
+ }
+}
+
+static void dmac_error(struct dw_dma_controller *dmac)
+{
+ struct dw_dma_channel *chan;
+ unsigned long status, chanid;
+
+ status = dmac_readl_lo(dmac, STATUS_ERROR);
+
+ while (status) {
+ struct dma_request *req;
+
+ chanid = __ffs(status);
+ chan = &dmac->channel[chanid];
+
+ dmac_writel_lo(dmac, CLEAR_ERROR, 1 << chanid);
+ clear_channel_bit(dmac, CH_EN, chanid);
+
+ if (chan->is_cyclic) {
+ BUG_ON(!chan->req_cyclic);
+ req = &chan->req_cyclic->req;
+ } else {
+ BUG_ON(!chan->req_sg);
+ req = &chan->req_sg->req;
+ }
+
+ cleanup_channel(dmac, chan);
+ if (req->error)
+ req->error(req);
+
+ status = dmac_readl_lo(dmac, STATUS_XFER);
+ }
+}
+
+static irqreturn_t dmac_interrupt(int irq, void *dev_id)
+{
+ struct dw_dma_controller *dmac = dev_id;
+ unsigned long status;
+ int ret = IRQ_NONE;
+
+ spin_lock(&dmac->lock);
+
+ status = dmac_readl_lo(dmac, STATUS_INT);
+
+ while (status) {
+ ret = IRQ_HANDLED;
+ if (status & 0x10)
+ dmac_error(dmac);
+ if (status & 0x02)
+ dmac_block_complete(dmac);
+ if (status & 0x01)
+ dmac_xfer_complete(dmac);
+
+ status = dmac_readl_lo(dmac, STATUS_INT);
+ }
+
+ spin_unlock(&dmac->lock);
+ return ret;
+}
+
+static int __devinit dmac_probe(struct platform_device *pdev)
+{
+ struct dw_dma_controller *dmac;
+ struct resource *regs;
+ int ret;
+
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!regs)
+ return -ENXIO;
+
+ dmac = kmalloc(sizeof(*dmac), GFP_KERNEL);
+ if (!dmac)
+ return -ENOMEM;
+ memset(dmac, 0, sizeof(*dmac));
+
+ dmac->hclk = clk_get(&pdev->dev, "hclk");
+ if (IS_ERR(dmac->hclk)) {
+ ret = PTR_ERR(dmac->hclk);
+ goto out_free_dmac;
+ }
+ clk_enable(dmac->hclk);
+
+ ret = -ENOMEM;
+ dmac->lli_pool = dma_pool_create("dmac", &pdev->dev,
+ sizeof(struct dw_dma_lli), 4, 0);
+ if (!dmac->lli_pool)
+ goto out_disable_clk;
+
+ spin_lock_init(&dmac->lock);
+ dmac->dma.dev = &pdev->dev;
+ dmac->dma.alloc_channel = dmac_alloc_channel;
+ dmac->dma.release_channel = dmac_release_channel;
+ dmac->dma.prepare_request_sg = dmac_prepare_request_sg;
+ dmac->dma.prepare_request_cyclic = dmac_prepare_request_cyclic;
+ dmac->dma.start_request = dmac_start_request;
+ dmac->dma.stop_request = dmac_stop_request;
+ dmac->dma.get_current_pos = dmac_get_current_pos;
+
+ dmac->regs = ioremap(regs->start, regs->end - regs->start + 1);
+ if (!dmac->regs)
+ goto out_free_pool;
+
+ ret = request_irq(platform_get_irq(pdev, 0), dmac_interrupt,
+ IRQF_SAMPLE_RANDOM, pdev->name, dmac);
+ if (ret)
+ goto out_unmap_regs;
+
+ /* Enable the DMA controller */
+ dmac_writel_lo(dmac, CFG, 1);
+
+ register_dma_controller(&dmac->dma);
+
+ printk(KERN_INFO
+ "dmac%d: DesignWare DMA controller at 0x%p irq %d\n",
+ dmac->dma.id, dmac->regs, platform_get_irq(pdev, 0));
+
+ return 0;
+
+out_unmap_regs:
+ iounmap(dmac->regs);
+out_free_pool:
+ dma_pool_destroy(dmac->lli_pool);
+out_disable_clk:
+ clk_disable(dmac->hclk);
+ clk_put(dmac->hclk);
+out_free_dmac:
+ kfree(dmac);
+ return ret;
+}
+
+static struct platform_driver dmac_driver = {
+ .probe = dmac_probe,
+ .driver = {
+ .name = "dmaca",
+ },
+};
+
+static int __init dmac_init(void)
+{
+ return platform_driver_register(&dmac_driver);
+}
+subsys_initcall(dmac_init);
+
+static void __exit dmac_exit(void)
+{
+ platform_driver_unregister(&dmac_driver);
+}
+module_exit(dmac_exit);
+
+MODULE_DESCRIPTION("Synopsys DesignWare DMA Controller driver");
+MODULE_AUTHOR("Haavard Skinnemoen <hskinnemoen@atmel.com>");
+MODULE_LICENSE("GPL");
diff --git a/arch/avr32/drivers/dw-dmac.h b/arch/avr32/drivers/dw-dmac.h
new file mode 100644
index 0000000..1f67921
--- /dev/null
+++ b/arch/avr32/drivers/dw-dmac.h
@@ -0,0 +1,42 @@
+/*
+ * Driver for the Synopsys DesignWare DMA Controller
+ *
+ * Copyright (C) 2005-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __AVR32_DW_DMAC_H__
+#define __AVR32_DW_DMAC_H__
+
+#define DW_DMAC_CFG 0x398
+#define DW_DMAC_CH_EN 0x3a0
+
+#define DW_DMAC_STATUS_XFER 0x2e8
+#define DW_DMAC_STATUS_BLOCK 0x2f0
+#define DW_DMAC_STATUS_ERROR 0x308
+
+#define DW_DMAC_MASK_XFER 0x310
+#define DW_DMAC_MASK_BLOCK 0x318
+#define DW_DMAC_MASK_ERROR 0x330
+
+#define DW_DMAC_CLEAR_XFER 0x338
+#define DW_DMAC_CLEAR_BLOCK 0x340
+#define DW_DMAC_CLEAR_ERROR 0x358
+
+#define DW_DMAC_STATUS_INT 0x360
+
+#define DW_DMAC_CHAN_SAR 0x000
+#define DW_DMAC_CHAN_DAR 0x008
+#define DW_DMAC_CHAN_LLP 0x010
+#define DW_DMAC_CHAN_CTL 0x018
+#define DW_DMAC_CHAN_SSTAT 0x020
+#define DW_DMAC_CHAN_DSTAT 0x028
+#define DW_DMAC_CHAN_SSTATAR 0x030
+#define DW_DMAC_CHAN_DSTATAR 0x038
+#define DW_DMAC_CHAN_CFG 0x040
+#define DW_DMAC_CHAN_SGR 0x048
+#define DW_DMAC_CHAN_DSR 0x050
+
+#endif /* __AVR32_DW_DMAC_H__ */
diff --git a/arch/avr32/kernel/Makefile b/arch/avr32/kernel/Makefile
index 90e5aff..1aedaeb 100644
--- a/arch/avr32/kernel/Makefile
+++ b/arch/avr32/kernel/Makefile
@@ -9,10 +9,6 @@ obj-y += syscall_table.o syscall-stubs.o irq.o
obj-y += setup.o traps.o semaphore.o ptrace.o
obj-y += signal.o sys_avr32.o process.o time.o
obj-y += init_task.o switch_to.o cpu.o
+obj-y += dma-controller.o
obj-$(CONFIG_MODULES) += module.o avr32_ksyms.o
obj-$(CONFIG_KPROBES) += kprobes.o
-
-USE_STANDARD_AS_RULE := true
-
-%.lds: %.lds.c FORCE
- $(call if_changed_dep,cpp_lds_S)
diff --git a/arch/avr32/kernel/dma-controller.c b/arch/avr32/kernel/dma-controller.c
new file mode 100644
index 0000000..fb654b3
--- /dev/null
+++ b/arch/avr32/kernel/dma-controller.c
@@ -0,0 +1,34 @@
+/*
+ * Preliminary DMA controller framework for AVR32
+ *
+ * Copyright (C) 2005-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <asm/dma-controller.h>
+
+static LIST_HEAD(controllers);
+
+int register_dma_controller(struct dma_controller *dmac)
+{
+ static int next_id;
+
+ dmac->id = next_id++;
+ list_add_tail(&dmac->list, &controllers);
+
+ return 0;
+}
+EXPORT_SYMBOL(register_dma_controller);
+
+struct dma_controller *find_dma_controller(int id)
+{
+ struct dma_controller *dmac;
+
+ list_for_each_entry(dmac, &controllers, list)
+ if (dmac->id == id)
+ return dmac;
+ return NULL;
+}
+EXPORT_SYMBOL(find_dma_controller);
diff --git a/arch/avr32/kernel/entry-avr32b.S b/arch/avr32/kernel/entry-avr32b.S
index 42657f1..ccadfd9 100644
--- a/arch/avr32/kernel/entry-avr32b.S
+++ b/arch/avr32/kernel/entry-avr32b.S
@@ -159,11 +159,18 @@ handle_vmalloc_miss:
.section .scall.text,"ax",@progbits
system_call:
+#ifdef CONFIG_PREEMPT
+ mask_interrupts
+#endif
pushm r12 /* r12_orig */
stmts --sp, r0-lr
- zero_fp
+
mfsr r0, SYSREG_RAR_SUP
mfsr r1, SYSREG_RSR_SUP
+#ifdef CONFIG_PREEMPT
+ unmask_interrupts
+#endif
+ zero_fp
stm --sp, r0-r1
/* check for syscall tracing */
@@ -638,6 +645,13 @@ irq_level\level:
stmts --sp,r0-lr
mfsr r8, rar_int\level
mfsr r9, rsr_int\level
+
+#ifdef CONFIG_PREEMPT
+ sub r11, pc, (. - system_call)
+ cp.w r11, r8
+ breq 4f
+#endif
+
pushm r8-r9
mov r11, sp
@@ -668,6 +682,16 @@ irq_level\level:
sub sp, -4 /* ignore r12_orig */
rete
+#ifdef CONFIG_PREEMPT
+4: mask_interrupts
+ mfsr r8, rsr_int\level
+ sbr r8, 16
+ mtsr rsr_int\level, r8
+ ldmts sp++, r0-lr
+ sub sp, -4 /* ignore r12_orig */
+ rete
+#endif
+
2: get_thread_info r0
ld.w r1, r0[TI_flags]
bld r1, TIF_CPU_GOING_TO_SLEEP
diff --git a/arch/avr32/kernel/setup.c b/arch/avr32/kernel/setup.c
index d08b0bc..4b4c188 100644
--- a/arch/avr32/kernel/setup.c
+++ b/arch/avr32/kernel/setup.c
@@ -248,7 +248,7 @@ static int __init early_parse_fbmem(char *p)
fbmem_size = memparse(p, &p);
if (*p == '@') {
- fbmem_start = memparse(p, &p);
+ fbmem_start = memparse(p + 1, &p);
ret = add_reserved_region(fbmem_start,
fbmem_start + fbmem_size - 1,
"Framebuffer");
diff --git a/arch/avr32/kernel/vmlinux.lds.S b/arch/avr32/kernel/vmlinux.lds.S
new file mode 100644
index 0000000..ce9ac96
--- /dev/null
+++ b/arch/avr32/kernel/vmlinux.lds.S
@@ -0,0 +1,143 @@
+/*
+ * AVR32 linker script for the Linux kernel
+ *
+ * Copyright (C) 2004-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#define LOAD_OFFSET 0x00000000
+#include <asm-generic/vmlinux.lds.h>
+#include <asm/cache.h>
+#include <asm/thread_info.h>
+
+OUTPUT_FORMAT("elf32-avr32", "elf32-avr32", "elf32-avr32")
+OUTPUT_ARCH(avr32)
+ENTRY(_start)
+
+/* Big endian */
+jiffies = jiffies_64 + 4;
+
+SECTIONS
+{
+ . = CONFIG_ENTRY_ADDRESS;
+ .init : AT(ADDR(.init) - LOAD_OFFSET) {
+ _stext = .;
+ __init_begin = .;
+ _sinittext = .;
+ *(.text.reset)
+ *(.init.text)
+ /*
+ * .exit.text is discarded at runtime, not
+ * link time, to deal with references from
+ * __bug_table
+ */
+ *(.exit.text)
+ _einittext = .;
+ . = ALIGN(4);
+ __tagtable_begin = .;
+ *(.taglist.init)
+ __tagtable_end = .;
+ *(.init.data)
+ . = ALIGN(16);
+ __setup_start = .;
+ *(.init.setup)
+ __setup_end = .;
+ . = ALIGN(4);
+ __initcall_start = .;
+ INITCALLS
+ __initcall_end = .;
+ __con_initcall_start = .;
+ *(.con_initcall.init)
+ __con_initcall_end = .;
+ __security_initcall_start = .;
+ *(.security_initcall.init)
+ __security_initcall_end = .;
+#ifdef CONFIG_BLK_DEV_INITRD
+ . = ALIGN(32);
+ __initramfs_start = .;
+ *(.init.ramfs)
+ __initramfs_end = .;
+#endif
+ . = ALIGN(PAGE_SIZE);
+ __init_end = .;
+ }
+
+ .text : AT(ADDR(.text) - LOAD_OFFSET) {
+ _evba = .;
+ _text = .;
+ *(.ex.text)
+ . = 0x50;
+ *(.tlbx.ex.text)
+ . = 0x60;
+ *(.tlbr.ex.text)
+ . = 0x70;
+ *(.tlbw.ex.text)
+ . = 0x100;
+ *(.scall.text)
+ *(.irq.text)
+ TEXT_TEXT
+ SCHED_TEXT
+ LOCK_TEXT
+ KPROBES_TEXT
+ *(.fixup)
+ *(.gnu.warning)
+ _etext = .;
+ } = 0xd703d703
+
+ . = ALIGN(4);
+ __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
+ __start___ex_table = .;
+ *(__ex_table)
+ __stop___ex_table = .;
+ }
+
+ BUG_TABLE
+
+ RODATA
+
+ . = ALIGN(THREAD_SIZE);
+
+ .data : AT(ADDR(.data) - LOAD_OFFSET) {
+ _data = .;
+ _sdata = .;
+ /*
+ * First, the init task union, aligned to an 8K boundary.
+ */
+ *(.data.init_task)
+
+ /* Then, the cacheline aligned data */
+ . = ALIGN(L1_CACHE_BYTES);
+ *(.data.cacheline_aligned)
+
+ /* And the rest... */
+ *(.data.rel*)
+ DATA_DATA
+ CONSTRUCTORS
+
+ _edata = .;
+ }
+
+
+ . = ALIGN(8);
+ .bss : AT(ADDR(.bss) - LOAD_OFFSET) {
+ __bss_start = .;
+ *(.bss)
+ *(COMMON)
+ . = ALIGN(8);
+ __bss_stop = .;
+ _end = .;
+ }
+
+ /* When something in the kernel is NOT compiled as a module, the module
+ * cleanup code and data are put into these segments. Both can then be
+ * thrown away, as cleanup code is never called unless it's a module.
+ */
+ /DISCARD/ : {
+ *(.exit.data)
+ *(.exitcall.exit)
+ }
+
+ DWARF_DEBUG
+}
diff --git a/arch/avr32/kernel/vmlinux.lds.c b/arch/avr32/kernel/vmlinux.lds.c
deleted file mode 100644
index db0438f..0000000
--- a/arch/avr32/kernel/vmlinux.lds.c
+++ /dev/null
@@ -1,142 +0,0 @@
-/*
- * AVR32 linker script for the Linux kernel
- *
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#define LOAD_OFFSET 0x00000000
-#include <asm-generic/vmlinux.lds.h>
-
-OUTPUT_FORMAT("elf32-avr32", "elf32-avr32", "elf32-avr32")
-OUTPUT_ARCH(avr32)
-ENTRY(_start)
-
-/* Big endian */
-jiffies = jiffies_64 + 4;
-
-SECTIONS
-{
- . = CONFIG_ENTRY_ADDRESS;
- .init : AT(ADDR(.init) - LOAD_OFFSET) {
- _stext = .;
- __init_begin = .;
- _sinittext = .;
- *(.text.reset)
- *(.init.text)
- /*
- * .exit.text is discarded at runtime, not
- * link time, to deal with references from
- * __bug_table
- */
- *(.exit.text)
- _einittext = .;
- . = ALIGN(4);
- __tagtable_begin = .;
- *(.taglist.init)
- __tagtable_end = .;
- *(.init.data)
- . = ALIGN(16);
- __setup_start = .;
- *(.init.setup)
- __setup_end = .;
- . = ALIGN(4);
- __initcall_start = .;
- INITCALLS
- __initcall_end = .;
- __con_initcall_start = .;
- *(.con_initcall.init)
- __con_initcall_end = .;
- __security_initcall_start = .;
- *(.security_initcall.init)
- __security_initcall_end = .;
-#ifdef CONFIG_BLK_DEV_INITRD
- . = ALIGN(32);
- __initramfs_start = .;
- *(.init.ramfs)
- __initramfs_end = .;
-#endif
- . = ALIGN(4096);
- __init_end = .;
- }
-
- . = ALIGN(8192);
- .text : AT(ADDR(.text) - LOAD_OFFSET) {
- _evba = .;
- _text = .;
- *(.ex.text)
- . = 0x50;
- *(.tlbx.ex.text)
- . = 0x60;
- *(.tlbr.ex.text)
- . = 0x70;
- *(.tlbw.ex.text)
- . = 0x100;
- *(.scall.text)
- *(.irq.text)
- TEXT_TEXT
- SCHED_TEXT
- LOCK_TEXT
- KPROBES_TEXT
- *(.fixup)
- *(.gnu.warning)
- _etext = .;
- } = 0xd703d703
-
- . = ALIGN(4);
- __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
- __start___ex_table = .;
- *(__ex_table)
- __stop___ex_table = .;
- }
-
- BUG_TABLE
-
- RODATA
-
- . = ALIGN(8192);
-
- .data : AT(ADDR(.data) - LOAD_OFFSET) {
- _data = .;
- _sdata = .;
- /*
- * First, the init task union, aligned to an 8K boundary.
- */
- *(.data.init_task)
-
- /* Then, the cacheline aligned data */
- . = ALIGN(32);
- *(.data.cacheline_aligned)
-
- /* And the rest... */
- *(.data.rel*)
- DATA_DATA
- CONSTRUCTORS
-
- _edata = .;
- }
-
-
- . = ALIGN(8);
- .bss : AT(ADDR(.bss) - LOAD_OFFSET) {
- __bss_start = .;
- *(.bss)
- *(COMMON)
- . = ALIGN(8);
- __bss_stop = .;
- _end = .;
- }
-
- /* When something in the kernel is NOT compiled as a module, the module
- * cleanup code and data are put into these segments. Both can then be
- * thrown away, as cleanup code is never called unless it's a module.
- */
- /DISCARD/ : {
- *(.exit.data)
- *(.exitcall.exit)
- }
-
- DWARF_DEBUG
-}
diff --git a/arch/avr32/mach-at32ap/Kconfig b/arch/avr32/mach-at32ap/Kconfig
index eb30783..43c5b9f 100644
--- a/arch/avr32/mach-at32ap/Kconfig
+++ b/arch/avr32/mach-at32ap/Kconfig
@@ -26,6 +26,13 @@ config AP7000_8_BIT_SMC
endchoice
+config GPIO_DEV
+ bool "GPIO /dev interface"
+ select CONFIGFS_FS
+ default n
+ help
+ Say `Y' to enable a /dev interface to the GPIO pins.
+
endmenu
endif # PLATFORM_AT32AP
diff --git a/arch/avr32/mach-at32ap/Makefile b/arch/avr32/mach-at32ap/Makefile
index a8b4450..250372a 100644
--- a/arch/avr32/mach-at32ap/Makefile
+++ b/arch/avr32/mach-at32ap/Makefile
@@ -2,3 +2,4 @@ obj-y += at32ap.o clock.o intc.o extint.o pio.o hsmc.o
obj-$(CONFIG_CPU_AT32AP7000) += at32ap7000.o
obj-$(CONFIG_CPU_AT32AP7000) += time-tc.o
obj-$(CONFIG_CPU_FREQ_AT32AP) += cpufreq.o
+obj-$(CONFIG_GPIO_DEV) += gpio-dev.o
diff --git a/arch/avr32/mach-at32ap/at32ap7000.c b/arch/avr32/mach-at32ap/at32ap7000.c
index 64cc558..8375f89 100644
--- a/arch/avr32/mach-at32ap/at32ap7000.c
+++ b/arch/avr32/mach-at32ap/at32ap7000.c
@@ -25,12 +25,6 @@
#include "pio.h"
#include "pm.h"
-/*
- * We can reduce the code size a bit by using a constant here. Since
- * this file is completely chip-specific, it's safe to not use
- * ioremap. Generic drivers should of course never do this.
- */
-#define AT32_PM_BASE 0xfff00000
#define PBMEM(base) \
{ \
@@ -562,6 +556,17 @@ static struct clk pico_clk = {
.users = 1,
};
+static struct resource dmaca0_resource[] = {
+ {
+ .start = 0xff200000,
+ .end = 0xff20ffff,
+ .flags = IORESOURCE_MEM,
+ },
+ IRQ(2),
+};
+DEFINE_DEV(dmaca, 0);
+DEV_CLK(hclk, dmaca0, hsb, 10);
+
/* --------------------------------------------------------------------
* HMATRIX
* -------------------------------------------------------------------- */
@@ -661,6 +666,7 @@ void __init at32_add_system_devices(void)
platform_device_register(&at32_eic0_device);
platform_device_register(&smc0_device);
platform_device_register(&pdc_device);
+ platform_device_register(&dmaca0_device);
platform_device_register(&at32_systc0_device);
@@ -966,6 +972,83 @@ at32_add_device_spi(unsigned int id, struct spi_board_info *b, unsigned int n)
}
/* --------------------------------------------------------------------
+ * TWI
+ * -------------------------------------------------------------------- */
+
+static struct resource atmel_twi0_resource[] = {
+ PBMEM(0xffe00800),
+ IRQ(5),
+};
+DEFINE_DEV(atmel_twi, 0);
+DEV_CLK(pclk,atmel_twi0,pba,2);
+
+struct platform_device *__init
+at32_add_device_twi(unsigned int id)
+{
+ struct platform_device *pdev;
+
+ switch (id) {
+ case 0:
+ pdev = &atmel_twi0_device;
+ select_peripheral(PA(6), PERIPH_A, 0); /* SDA */
+ select_peripheral(PA(7), PERIPH_A, 0); /* SCL */
+ break;
+
+ default:
+ return NULL;
+ }
+
+ platform_device_register(pdev);
+ return pdev;
+}
+
+/* --------------------------------------------------------------------
+ * MMC
+ * -------------------------------------------------------------------- */
+static struct mci_platform_data atmel_mci0_data = {
+ .detect_pin = GPIO_PIN_NONE,
+ .wp_pin = GPIO_PIN_NONE,
+};
+static struct resource atmel_mci0_resource[] = {
+ PBMEM(0xfff02400),
+ IRQ(28),
+};
+DEFINE_DEV_DATA(atmel_mci, 0);
+DEV_CLK(mci_clk, atmel_mci0, pbb, 9);
+
+struct platform_device *__init
+at32_add_device_mci(unsigned int id, struct mci_platform_data *data)
+{
+ struct platform_device *pdev;
+
+ switch (id) {
+ case 0:
+ pdev = &atmel_mci0_device;
+ select_peripheral(PA(10), PERIPH_A, 0); /* CLK */
+ select_peripheral(PA(11), PERIPH_A, 0); /* CMD */
+ select_peripheral(PA(12), PERIPH_A, 0); /* DATA0 */
+ select_peripheral(PA(13), PERIPH_A, 0); /* DATA1 */
+ select_peripheral(PA(14), PERIPH_A, 0); /* DATA2 */
+ select_peripheral(PA(15), PERIPH_A, 0); /* DATA3 */
+ break;
+ default:
+ return NULL;
+ }
+
+ if (data) {
+ if (data->detect_pin != GPIO_PIN_NONE)
+ at32_select_gpio(data->detect_pin, 0);
+ if (data->wp_pin != GPIO_PIN_NONE)
+ at32_select_gpio(data->wp_pin, 0);
+ memcpy(pdev->dev.platform_data, data,
+ sizeof(struct mci_platform_data));
+ }
+
+ platform_device_register(pdev);
+ return pdev;
+}
+
+/* --------------------------------------------------------------------
* LCDC
* -------------------------------------------------------------------- */
static struct atmel_lcdfb_info atmel_lcdfb0_data;
@@ -1168,6 +1251,143 @@ at32_add_device_ssc(unsigned int id, unsigned int flags)
}
/* --------------------------------------------------------------------
+ * USB Device Controller
+ * -------------------------------------------------------------------- */
+static struct resource usba0_resource[] __initdata = {
+ {
+ .start = 0xff300000,
+ .end = 0xff3fffff,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .start = 0xfff03000,
+ .end = 0xfff033ff,
+ .flags = IORESOURCE_MEM,
+ },
+ IRQ(31),
+};
+static struct clk usba0_pclk = {
+ .name = "pclk",
+ .parent = &pbb_clk,
+ .mode = pbb_clk_mode,
+ .get_rate = pbb_clk_get_rate,
+ .index = 12,
+};
+static struct clk usba0_hclk = {
+ .name = "hclk",
+ .parent = &hsb_clk,
+ .mode = hsb_clk_mode,
+ .get_rate = hsb_clk_get_rate,
+ .index = 6,
+};
+
+struct platform_device *__init
+at32_add_device_usba(unsigned int id, struct usba_platform_data *data)
+{
+ struct platform_device *pdev;
+
+ if (id != 0)
+ return NULL;
+
+ pdev = platform_device_alloc("atmel_usba_udc", 0);
+ if (!pdev)
+ return NULL;
+
+ if (platform_device_add_resources(pdev, usba0_resource,
+ ARRAY_SIZE(usba0_resource)))
+ goto out_free_pdev;
+
+ if (data) {
+ if (platform_device_add_data(pdev, data, sizeof(*data)))
+ goto out_free_pdev;
+
+ if (data->vbus_pin != GPIO_PIN_NONE)
+ at32_select_gpio(data->vbus_pin, 0);
+ }
+
+ usba0_pclk.dev = &pdev->dev;
+ usba0_hclk.dev = &pdev->dev;
+
+ platform_device_add(pdev);
+
+ return pdev;
+
+out_free_pdev:
+ platform_device_put(pdev);
+ return NULL;
+}
+
+/* --------------------------------------------------------------------
+ * AC97C
+ * -------------------------------------------------------------------- */
+static struct resource atmel_ac97c0_resource[] = {
+ PBMEM(0xfff02800),
+ IRQ(29),
+};
+DEFINE_DEV(atmel_ac97c, 0);
+DEV_CLK(pclk, atmel_ac97c0, pbb, 10);
+
+struct platform_device *__init
+at32_add_device_ac97c(unsigned int id)
+{
+ struct platform_device *pdev;
+
+ switch (id) {
+ case 0:
+ pdev = &atmel_ac97c0_device;
+ select_peripheral(PB(20), PERIPH_B, 0); /* SYNC */
+ select_peripheral(PB(21), PERIPH_B, 0); /* SDO */
+ select_peripheral(PB(22), PERIPH_B, 0); /* SDI */
+ select_peripheral(PB(23), PERIPH_B, 0); /* SCLK */
+ break;
+ default:
+ return NULL;
+ }
+
+ platform_device_register(pdev);
+ return pdev;
+}
+
+/* --------------------------------------------------------------------
+ * DAC
+ * -------------------------------------------------------------------- */
+static struct resource abdac0_resource[] = {
+ PBMEM(0xfff02000),
+ IRQ(27),
+};
+DEFINE_DEV(abdac, 0);
+DEV_CLK(pclk, abdac0, pbb, 8);
+static struct clk abdac0_sample_clk = {
+ .name = "sample_clk",
+ .dev = &abdac0_device.dev,
+ .mode = genclk_mode,
+ .get_rate = genclk_get_rate,
+ .set_rate = genclk_set_rate,
+ .set_parent = genclk_set_parent,
+ .index = 6,
+};
+
+struct platform_device *__init
+at32_add_device_abdac(unsigned int id)
+{
+ struct platform_device *pdev;
+
+ switch (id) {
+ case 0:
+ pdev = &abdac0_device;
+ select_peripheral(PB(20), PERIPH_A, 0); /* DATA1 */
+ select_peripheral(PB(21), PERIPH_A, 0); /* DATA0 */
+ select_peripheral(PB(22), PERIPH_A, 0); /* DATAN1 */
+ select_peripheral(PB(23), PERIPH_A, 0); /* DATAN0 */
+ break;
+ default:
+ return NULL;
+ }
+
+ platform_device_register(pdev);
+ return pdev;
+}
+
+/* --------------------------------------------------------------------
* GCLK
* -------------------------------------------------------------------- */
static struct clk gclk0 = {
@@ -1230,6 +1450,7 @@ struct clk *at32_clock_list[] = {
&smc0_mck,
&pdc_hclk,
&pdc_pclk,
+ &dmaca0_hclk,
&pico_clk,
&pio0_mck,
&pio1_mck,
@@ -1247,11 +1468,18 @@ struct clk *at32_clock_list[] = {
&macb1_pclk,
&atmel_spi0_spi_clk,
&atmel_spi1_spi_clk,
+ &atmel_twi0_pclk,
+ &atmel_mci0_mci_clk,
&atmel_lcdfb0_hck1,
&atmel_lcdfb0_pixclk,
&ssc0_pclk,
&ssc1_pclk,
&ssc2_pclk,
+ &usba0_hclk,
+ &usba0_pclk,
+ &atmel_ac97c0_pclk,
+ &abdac0_pclk,
+ &abdac0_sample_clk,
&gclk0,
&gclk1,
&gclk2,
@@ -1293,6 +1521,7 @@ void __init at32_clock_init(void)
genclk_init_parent(&gclk3);
genclk_init_parent(&gclk4);
genclk_init_parent(&atmel_lcdfb0_pixclk);
+ genclk_init_parent(&abdac0_sample_clk);
/*
* Turn on all clocks that have at least one user already, and
diff --git a/arch/avr32/mach-at32ap/clock.c b/arch/avr32/mach-at32ap/clock.c
index 0f8c89c..4642117 100644
--- a/arch/avr32/mach-at32ap/clock.c
+++ b/arch/avr32/mach-at32ap/clock.c
@@ -150,3 +150,119 @@ struct clk *clk_get_parent(struct clk *clk)
return clk->parent;
}
EXPORT_SYMBOL(clk_get_parent);
+
+
+
+#ifdef CONFIG_DEBUG_FS
+
+/* /sys/kernel/debug/at32ap_clk */
+
+#include <linux/io.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#include "pm.h"
+
+
+#define NEST_DELTA 2
+#define NEST_MAX 6
+
+struct clkinf {
+ struct seq_file *s;
+ unsigned nest;
+};
+
+static void
+dump_clock(struct clk *parent, struct clkinf *r)
+{
+ unsigned nest = r->nest;
+ char buf[16 + NEST_MAX];
+ struct clk *clk;
+ unsigned i;
+
+ /* skip clocks coupled to devices that aren't registered */
+ if (parent->dev && !parent->dev->bus_id[0] && !parent->users)
+ return;
+
+ /* <nest spaces> name <pad to end> */
+ memset(buf, ' ', sizeof(buf) - 1);
+ buf[sizeof(buf) - 1] = 0;
+ i = strlen(parent->name);
+ memcpy(buf + nest, parent->name,
+ min(i, (unsigned)(sizeof(buf) - 1 - nest)));
+
+ seq_printf(r->s, "%s%c users=%2d %-3s %9ld Hz",
+ buf, parent->set_parent ? '*' : ' ',
+ parent->users,
+ parent->users ? "on" : "off", /* NOTE: not-paranoid!! */
+ clk_get_rate(parent));
+ if (parent->dev)
+ seq_printf(r->s, ", for %s", parent->dev->bus_id);
+ seq_printf(r->s, "\n");
+
+ /* cost of this scan is small, but not linear... */
+ r->nest = nest + NEST_DELTA;
+ for (i = 3; i < at32_nr_clocks; i++) {
+ clk = at32_clock_list[i];
+ if (clk->parent == parent)
+ dump_clock(clk, r);
+ }
+ r->nest = nest;
+}
+
+static int clk_show(struct seq_file *s, void *unused)
+{
+ struct clkinf r;
+ int i;
+
+ /* show all the power manager registers */
+ seq_printf(s, "MCCTRL = %8x\n", pm_readl(MCCTRL));
+ seq_printf(s, "CKSEL = %8x\n", pm_readl(CKSEL));
+ seq_printf(s, "CPUMASK = %8x\n", pm_readl(CPU_MASK));
+ seq_printf(s, "HSBMASK = %8x\n", pm_readl(HSB_MASK));
+ seq_printf(s, "PBAMASK = %8x\n", pm_readl(PBA_MASK));
+ seq_printf(s, "PBBMASK = %8x\n", pm_readl(PBB_MASK));
+ seq_printf(s, "PLL0 = %8x\n", pm_readl(PLL0));
+ seq_printf(s, "PLL1 = %8x\n", pm_readl(PLL1));
+ seq_printf(s, "IMR = %8x\n", pm_readl(IMR));
+ for (i = 0; i < 8; i++) {
+ if (i == 5)
+ continue;
+ seq_printf(s, "GCCTRL%d = %8x\n", i, pm_readl(GCCTRL(i)));
+ }
+
+ seq_printf(s, "\n");
+
+ /* show clock tree as derived from the three oscillators
+ * we "know" are at the head of the list
+ */
+ r.s = s;
+ r.nest = 0;
+ dump_clock(at32_clock_list[0], &r);
+ dump_clock(at32_clock_list[1], &r);
+ dump_clock(at32_clock_list[2], &r);
+
+ return 0;
+}
+
+static int clk_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, clk_show, NULL);
+}
+
+static const struct file_operations clk_operations = {
+ .open = clk_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int __init clk_debugfs_init(void)
+{
+ (void) debugfs_create_file("at32ap_clk", S_IFREG | S_IRUGO,
+ NULL, NULL, &clk_operations);
+
+ return 0;
+}
+postcore_initcall(clk_debugfs_init);
+
+#endif
diff --git a/arch/avr32/mach-at32ap/gpio-dev.c b/arch/avr32/mach-at32ap/gpio-dev.c
new file mode 100644
index 0000000..8cf6d11
--- /dev/null
+++ b/arch/avr32/mach-at32ap/gpio-dev.c
@@ -0,0 +1,573 @@
+/*
+ * GPIO /dev and configfs interface
+ *
+ * Copyright (C) 2006-2007 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/kernel.h>
+#include <linux/configfs.h>
+#include <linux/cdev.h>
+#include <linux/device.h>
+#include <linux/fs.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/poll.h>
+#include <linux/uaccess.h>
+#include <linux/wait.h>
+
+#include <asm/gpio.h>
+#include <asm/arch/portmux.h>
+
+#define GPIO_DEV_MAX 8
+
+static struct class *gpio_dev_class;
+static dev_t gpio_devt;
+
+struct gpio_item {
+ spinlock_t lock;
+
+ int enabled;
+ int initialized;
+ int port;
+ u32 pin_mask;
+ u32 oe_mask;
+
+ /* Pin state last time we read it (for blocking reads) */
+ u32 pin_state;
+ int changed;
+
+ wait_queue_head_t change_wq;
+ struct fasync_struct *async_queue;
+
+ int id;
+ struct class_device *gpio_dev;
+ struct cdev char_dev;
+ struct config_item item;
+};
+
+struct gpio_attribute {
+ struct configfs_attribute attr;
+ ssize_t (*show)(struct gpio_item *, char *);
+ ssize_t (*store)(struct gpio_item *, const char *, size_t);
+};
+
+static irqreturn_t gpio_dev_interrupt(int irq, void *dev_id)
+{
+ struct gpio_item *gpio = dev_id;
+ u32 old_state, new_state;
+
+ old_state = gpio->pin_state;
+ new_state = at32_gpio_get_value_multiple(gpio->port, gpio->pin_mask);
+ gpio->pin_state = new_state;
+
+ if (new_state != old_state) {
+ gpio->changed = 1;
+ wake_up_interruptible(&gpio->change_wq);
+
+ if (gpio->async_queue)
+ kill_fasync(&gpio->async_queue, SIGIO, POLL_IN);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int gpio_dev_open(struct inode *inode, struct file *file)
+{
+ struct gpio_item *gpio = container_of(inode->i_cdev,
+ struct gpio_item,
+ char_dev);
+ unsigned int irq;
+ unsigned int i;
+ int ret;
+
+ nonseekable_open(inode, file);
+ config_item_get(&gpio->item);
+ file->private_data = gpio;
+
+ gpio->pin_state = at32_gpio_get_value_multiple(gpio->port,
+ gpio->pin_mask);
+ gpio->changed = 1;
+
+ for (i = 0; i < 32; i++) {
+ if (gpio->pin_mask & (1 << i)) {
+ irq = gpio_to_irq(32 * gpio->port + i);
+ ret = request_irq(irq, gpio_dev_interrupt, 0,
+ "gpio-dev", gpio);
+ if (ret)
+ goto err_irq;
+ }
+ }
+
+ return 0;
+
+err_irq:
+ while (i--) {
+ if (gpio->pin_mask & (1 << i)) {
+ irq = gpio_to_irq(32 * gpio->port + i);
+ free_irq(irq, gpio);
+ }
+ }
+
+ config_item_put(&gpio->item);
+
+ return ret;
+}
+
+static int gpio_dev_fasync(int fd, struct file *file, int mode)
+{
+ struct gpio_item *gpio = file->private_data;
+
+ return fasync_helper(fd, file, mode, &gpio->async_queue);
+}
+
+static int gpio_dev_release(struct inode *inode, struct file *file)
+{
+ struct gpio_item *gpio = file->private_data;
+ unsigned int irq;
+ unsigned int i;
+
+ gpio_dev_fasync(-1, file, 0);
+
+ for (i = 0; i < 32; i++) {
+ if (gpio->pin_mask & (1 << i)) {
+ irq = gpio_to_irq(32 * gpio->port + i);
+ free_irq(irq, gpio);
+ }
+ }
+
+ config_item_put(&gpio->item);
+
+ return 0;
+}
+
+static unsigned int gpio_dev_poll(struct file *file, poll_table *wait)
+{
+ struct gpio_item *gpio = file->private_data;
+ unsigned int mask = 0;
+
+ poll_wait(file, &gpio->change_wq, wait);
+ if (gpio->changed)
+ mask |= POLLIN | POLLRDNORM;
+
+ return mask;
+}
+
+static ssize_t gpio_dev_read(struct file *file, char __user *buf,
+ size_t count, loff_t *offset)
+{
+ struct gpio_item *gpio = file->private_data;
+ u32 value;
+
+ spin_lock_irq(&gpio->lock);
+ while (!gpio->changed) {
+ spin_unlock_irq(&gpio->lock);
+
+ if (file->f_flags & O_NONBLOCK)
+ return -EAGAIN;
+
+ if (wait_event_interruptible(gpio->change_wq, gpio->changed))
+ return -ERESTARTSYS;
+
+ spin_lock_irq(&gpio->lock);
+ }
+
+ gpio->changed = 0;
+ value = at32_gpio_get_value_multiple(gpio->port, gpio->pin_mask);
+
+ spin_unlock_irq(&gpio->lock);
+
+ count = min(count, (size_t)4);
+ if (copy_to_user(buf, &value, count))
+ return -EFAULT;
+
+ return count;
+}
+
+static ssize_t gpio_dev_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *offset)
+{
+ struct gpio_item *gpio = file->private_data;
+ u32 value = 0;
+ u32 mask = ~0UL;
+
+ count = min(count, (size_t)4);
+ if (copy_from_user(&value, buf, count))
+ return -EFAULT;
+
+ /* Assuming big endian */
+ mask <<= (4 - count) * 8;
+ mask &= gpio->pin_mask;
+
+ at32_gpio_set_value_multiple(gpio->port, value, mask);
+
+ return count;
+}
+
+static struct file_operations gpio_dev_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .open = gpio_dev_open,
+ .release = gpio_dev_release,
+ .fasync = gpio_dev_fasync,
+ .poll = gpio_dev_poll,
+ .read = gpio_dev_read,
+ .write = gpio_dev_write,
+};
+
+static struct gpio_item *to_gpio_item(struct config_item *item)
+{
+ return item ? container_of(item, struct gpio_item, item) : NULL;
+}
+
+static ssize_t gpio_show_gpio_id(struct gpio_item *gpio, char *page)
+{
+ return sprintf(page, "%d\n", gpio->port);
+}
+
+static ssize_t gpio_store_gpio_id(struct gpio_item *gpio,
+ const char *page, size_t count)
+{
+ unsigned long id;
+ char *p = (char *)page;
+ ssize_t ret = -EINVAL;
+
+ id = simple_strtoul(p, &p, 0);
+ if (!p || (*p && (*p != '\n')))
+ return -EINVAL;
+
+ /* Switching PIO is not allowed when live... */
+ spin_lock(&gpio->lock);
+ if (!gpio->enabled) {
+ ret = -ENXIO;
+ if (at32_gpio_port_is_valid(id)) {
+ gpio->port = id;
+ ret = count;
+ }
+ }
+ spin_unlock(&gpio->lock);
+
+ return ret;
+}
+
+static ssize_t gpio_show_pin_mask(struct gpio_item *gpio, char *page)
+{
+ return sprintf(page, "0x%08x\n", gpio->pin_mask);
+}
+
+static ssize_t gpio_store_pin_mask(struct gpio_item *gpio,
+ const char *page, size_t count)
+{
+ u32 new_mask;
+ char *p = (char *)page;
+ ssize_t ret = -EINVAL;
+
+ new_mask = simple_strtoul(p, &p, 0);
+ if (!p || (*p && (*p != '\n')))
+ return -EINVAL;
+
+ /* Can't update the pin mask while live. */
+ spin_lock(&gpio->lock);
+ if (!gpio->enabled) {
+ gpio->oe_mask &= new_mask;
+ gpio->pin_mask = new_mask;
+ ret = count;
+ }
+ spin_unlock(&gpio->lock);
+
+ return ret;
+}
+
+static ssize_t gpio_show_oe_mask(struct gpio_item *gpio, char *page)
+{
+ return sprintf(page, "0x%08x\n", gpio->oe_mask);
+}
+
+static ssize_t gpio_store_oe_mask(struct gpio_item *gpio,
+ const char *page, size_t count)
+{
+ u32 mask;
+ char *p = (char *)page;
+ ssize_t ret = -EINVAL;
+
+ mask = simple_strtoul(p, &p, 0);
+ if (!p || (*p && (*p != '\n')))
+ return -EINVAL;
+
+ spin_lock(&gpio->lock);
+ if (!gpio->enabled) {
+ gpio->oe_mask = mask & gpio->pin_mask;
+ ret = count;
+ }
+ spin_unlock(&gpio->lock);
+
+ return ret;
+}
+
+static ssize_t gpio_show_enabled(struct gpio_item *gpio, char *page)
+{
+ return sprintf(page, "%d\n", gpio->enabled);
+}
+
+static ssize_t gpio_store_enabled(struct gpio_item *gpio,
+ const char *page, size_t count)
+{
+ char *p = (char *)page;
+ int enabled;
+ int ret;
+
+ enabled = simple_strtoul(p, &p, 0);
+ if (!p || (*p && (*p != '\n')))
+ return -EINVAL;
+
+ /* make it a boolean value */
+ enabled = !!enabled;
+
+ if (gpio->enabled == enabled)
+ /* No change; do nothing. */
+ return count;
+
+ BUG_ON(gpio->id >= GPIO_DEV_MAX);
+
+ if (!enabled) {
+ class_device_unregister(gpio->gpio_dev);
+ cdev_del(&gpio->char_dev);
+ at32_deselect_pins(gpio->port, gpio->pin_mask);
+ gpio->initialized = 0;
+ } else {
+ if (gpio->port < 0 || !gpio->pin_mask)
+ return -ENODEV;
+ }
+
+ /* Disallow any updates to gpio_id or pin_mask */
+ spin_lock(&gpio->lock);
+ gpio->enabled = enabled;
+ spin_unlock(&gpio->lock);
+
+ if (!enabled)
+ return count;
+
+ /* Now, try to allocate the pins */
+ ret = at32_select_gpio_pins(gpio->port, gpio->pin_mask, gpio->oe_mask);
+ if (ret)
+ goto err_alloc_pins;
+
+ gpio->initialized = 1;
+
+ cdev_init(&gpio->char_dev, &gpio_dev_fops);
+ gpio->char_dev.owner = THIS_MODULE;
+ ret = cdev_add(&gpio->char_dev, MKDEV(MAJOR(gpio_devt), gpio->id), 1);
+ if (ret < 0)
+ goto err_cdev_add;
+ gpio->gpio_dev = class_device_create(gpio_dev_class, NULL,
+ MKDEV(MAJOR(gpio_devt), gpio->id),
+ NULL,
+ "gpio%d", gpio->id);
+ if (IS_ERR(gpio->gpio_dev)) {
+ printk(KERN_ERR "failed to create gpio%d\n", gpio->id);
+ ret = PTR_ERR(gpio->gpio_dev);
+ goto err_class_dev;
+ }
+
+ printk(KERN_INFO "created gpio%d (port%d/0x%08x) as (%d:%d)\n",
+ gpio->id, gpio->port, gpio->pin_mask,
+ MAJOR(gpio->gpio_dev->devt), MINOR(gpio->gpio_dev->devt));
+
+ return 0;
+
+err_class_dev:
+ cdev_del(&gpio->char_dev);
+err_cdev_add:
+ at32_deselect_pins(gpio->port, gpio->pin_mask);
+ gpio->initialized = 0;
+err_alloc_pins:
+ spin_lock(&gpio->lock);
+ gpio->enabled = 0;
+ spin_unlock(&gpio->lock);
+
+ return ret;
+}
+
+static struct gpio_attribute gpio_item_attr_gpio_id = {
+ .attr = {
+ .ca_owner = THIS_MODULE,
+ .ca_name = "gpio_id",
+ .ca_mode = S_IRUGO | S_IWUSR,
+ },
+ .show = gpio_show_gpio_id,
+ .store = gpio_store_gpio_id,
+};
+static struct gpio_attribute gpio_item_attr_pin_mask = {
+ .attr = {
+ .ca_owner = THIS_MODULE,
+ .ca_name = "pin_mask",
+ .ca_mode = S_IRUGO | S_IWUSR,
+ },
+ .show = gpio_show_pin_mask,
+ .store = gpio_store_pin_mask,
+};
+static struct gpio_attribute gpio_item_attr_oe_mask = {
+ .attr = {
+ .ca_owner = THIS_MODULE,
+ .ca_name = "oe_mask",
+ .ca_mode = S_IRUGO | S_IWUSR,
+ },
+ .show = gpio_show_oe_mask,
+ .store = gpio_store_oe_mask,
+};
+static struct gpio_attribute gpio_item_attr_enabled = {
+ .attr = {
+ .ca_owner = THIS_MODULE,
+ .ca_name = "enabled",
+ .ca_mode = S_IRUGO | S_IWUSR,
+ },
+ .show = gpio_show_enabled,
+ .store = gpio_store_enabled,
+};
+
+static struct configfs_attribute *gpio_item_attrs[] = {
+ &gpio_item_attr_gpio_id.attr,
+ &gpio_item_attr_pin_mask.attr,
+ &gpio_item_attr_oe_mask.attr,
+ &gpio_item_attr_enabled.attr,
+ NULL,
+};
+
+static ssize_t gpio_show_attr(struct config_item *item,
+ struct configfs_attribute *attr,
+ char *page)
+{
+ struct gpio_item *gpio_item = to_gpio_item(item);
+ struct gpio_attribute *gpio_attr
+ = container_of(attr, struct gpio_attribute, attr);
+ ssize_t ret = 0;
+
+ if (gpio_attr->show)
+ ret = gpio_attr->show(gpio_item, page);
+ return ret;
+}
+
+static ssize_t gpio_store_attr(struct config_item *item,
+ struct configfs_attribute *attr,
+ const char *page, size_t count)
+{
+ struct gpio_item *gpio_item = to_gpio_item(item);
+ struct gpio_attribute *gpio_attr
+ = container_of(attr, struct gpio_attribute, attr);
+ ssize_t ret = -EINVAL;
+
+ if (gpio_attr->store)
+ ret = gpio_attr->store(gpio_item, page, count);
+ return ret;
+}
+
+static void gpio_release(struct config_item *item)
+{
+ kfree(to_gpio_item(item));
+}
+
+static struct configfs_item_operations gpio_item_ops = {
+ .release = gpio_release,
+ .show_attribute = gpio_show_attr,
+ .store_attribute = gpio_store_attr,
+};
+
+static struct config_item_type gpio_item_type = {
+ .ct_item_ops = &gpio_item_ops,
+ .ct_attrs = gpio_item_attrs,
+ .ct_owner = THIS_MODULE,
+};
+
+static struct config_item *gpio_make_item(struct config_group *group,
+ const char *name)
+{
+ static int next_id;
+ struct gpio_item *gpio;
+
+ if (next_id >= GPIO_DEV_MAX)
+ return NULL;
+
+ gpio = kzalloc(sizeof(struct gpio_item), GFP_KERNEL);
+ if (!gpio)
+ return NULL;
+
+ gpio->id = next_id++;
+ config_item_init_type_name(&gpio->item, name, &gpio_item_type);
+ spin_lock_init(&gpio->lock);
+ init_waitqueue_head(&gpio->change_wq);
+
+ return &gpio->item;
+}
+
+static void gpio_drop_item(struct config_group *group,
+ struct config_item *item)
+{
+ struct gpio_item *gpio = to_gpio_item(item);
+
+ spin_lock(&gpio->lock);
+ if (gpio->enabled) {
+ class_device_unregister(gpio->gpio_dev);
+ cdev_del(&gpio->char_dev);
+ }
+
+ if (gpio->initialized) {
+ at32_deselect_pins(gpio->port, gpio->pin_mask);
+ gpio->initialized = 0;
+ gpio->enabled = 0;
+ }
+ spin_unlock(&gpio->lock);
+}
+
+static struct configfs_group_operations gpio_group_ops = {
+ .make_item = gpio_make_item,
+ .drop_item = gpio_drop_item,
+};
+
+static struct config_item_type gpio_group_type = {
+ .ct_group_ops = &gpio_group_ops,
+ .ct_owner = THIS_MODULE,
+};
+
+static struct configfs_subsystem gpio_subsys = {
+ .su_group = {
+ .cg_item = {
+ .ci_namebuf = "gpio",
+ .ci_type = &gpio_group_type,
+ },
+ },
+};
+
+static int __init gpio_dev_init(void)
+{
+ int err;
+
+ gpio_dev_class = class_create(THIS_MODULE, "gpio-dev");
+ if (IS_ERR(gpio_dev_class)) {
+ err = PTR_ERR(gpio_dev_class);
+ goto err_class_create;
+ }
+
+ err = alloc_chrdev_region(&gpio_devt, 0, GPIO_DEV_MAX, "gpio");
+ if (err < 0)
+ goto err_alloc_chrdev;
+
+ /* Configfs initialization */
+ config_group_init(&gpio_subsys.su_group);
+ mutex_init(&gpio_subsys.su_mutex);
+ err = configfs_register_subsystem(&gpio_subsys);
+ if (err)
+ goto err_register_subsys;
+
+ return 0;
+
+err_register_subsys:
+ unregister_chrdev_region(gpio_devt, GPIO_DEV_MAX);
+err_alloc_chrdev:
+ class_destroy(gpio_dev_class);
+err_class_create:
+ printk(KERN_WARNING "Failed to initialize gpio /dev interface\n");
+ return err;
+}
+late_initcall(gpio_dev_init);
diff --git a/arch/avr32/mach-at32ap/hsmc.c b/arch/avr32/mach-at32ap/hsmc.c
index 5e22a75..704607f 100644
--- a/arch/avr32/mach-at32ap/hsmc.c
+++ b/arch/avr32/mach-at32ap/hsmc.c
@@ -29,16 +29,25 @@ struct hsmc {
static struct hsmc *hsmc;
-int smc_set_configuration(int cs, const struct smc_config *config)
+void smc_set_timing(struct smc_config *config,
+ const struct smc_timing *timing)
{
+ int recover;
+ int cycle;
+
unsigned long mul;
- unsigned long offset;
- u32 setup, pulse, cycle, mode;
- if (!hsmc)
- return -ENODEV;
- if (cs >= NR_CHIP_SELECTS)
- return -EINVAL;
+ /* Reset all SMC timings */
+ config->ncs_read_setup = 0;
+ config->nrd_setup = 0;
+ config->ncs_write_setup = 0;
+ config->nwe_setup = 0;
+ config->ncs_read_pulse = 0;
+ config->nrd_pulse = 0;
+ config->ncs_write_pulse = 0;
+ config->nwe_pulse = 0;
+ config->read_cycle = 0;
+ config->write_cycle = 0;
/*
* cycles = x / T = x * f
@@ -50,16 +59,102 @@ int smc_set_configuration(int cs, const struct smc_config *config)
#define ns2cyc(x) ((((x) * mul) + 65535) >> 16)
- setup = (HSMC_BF(NWE_SETUP, ns2cyc(config->nwe_setup))
- | HSMC_BF(NCS_WR_SETUP, ns2cyc(config->ncs_write_setup))
- | HSMC_BF(NRD_SETUP, ns2cyc(config->nrd_setup))
- | HSMC_BF(NCS_RD_SETUP, ns2cyc(config->ncs_read_setup)));
- pulse = (HSMC_BF(NWE_PULSE, ns2cyc(config->nwe_pulse))
- | HSMC_BF(NCS_WR_PULSE, ns2cyc(config->ncs_write_pulse))
- | HSMC_BF(NRD_PULSE, ns2cyc(config->nrd_pulse))
- | HSMC_BF(NCS_RD_PULSE, ns2cyc(config->ncs_read_pulse)));
- cycle = (HSMC_BF(NWE_CYCLE, ns2cyc(config->write_cycle))
- | HSMC_BF(NRD_CYCLE, ns2cyc(config->read_cycle)));
+ if (timing->ncs_read_setup > 0)
+ config->ncs_read_setup = ns2cyc(timing->ncs_read_setup);
+
+ if (timing->nrd_setup > 0)
+ config->nrd_setup = ns2cyc(timing->nrd_setup);
+
+ if (timing->ncs_write_setup > 0)
+ config->ncs_write_setup = ns2cyc(timing->ncs_write_setup);
+
+ if (timing->nwe_setup > 0)
+ config->nwe_setup = ns2cyc(timing->nwe_setup);
+
+ if (timing->ncs_read_pulse > 0)
+ config->ncs_read_pulse = ns2cyc(timing->ncs_read_pulse);
+
+ if (timing->nrd_pulse > 0)
+ config->nrd_pulse = ns2cyc(timing->nrd_pulse);
+
+ if (timing->ncs_write_pulse > 0)
+ config->ncs_write_pulse = ns2cyc(timing->ncs_write_pulse);
+
+ if (timing->nwe_pulse > 0)
+ config->nwe_pulse = ns2cyc(timing->nwe_pulse);
+
+ if (timing->read_cycle > 0)
+ config->read_cycle = ns2cyc(timing->read_cycle);
+
+ if (timing->write_cycle > 0)
+ config->write_cycle = ns2cyc(timing->write_cycle);
+
+ /* Extend read cycle in needed */
+ if (timing->ncs_read_recover > 0)
+ recover = ns2cyc(timing->ncs_read_recover);
+ else
+ recover = 1;
+
+ cycle = config->ncs_read_setup + config->ncs_read_pulse + recover;
+
+ if (config->read_cycle < cycle)
+ config->read_cycle = cycle;
+
+ /* Extend read cycle in needed */
+ if (timing->nrd_recover > 0)
+ recover = ns2cyc(timing->nrd_recover);
+ else
+ recover = 1;
+
+ cycle = config->nrd_setup + config->nrd_pulse + recover;
+
+ if (config->read_cycle < cycle)
+ config->read_cycle = cycle;
+
+ /* Extend write cycle in needed */
+ if (timing->ncs_write_recover > 0)
+ recover = ns2cyc(timing->ncs_write_recover);
+ else
+ recover = 1;
+
+ cycle = config->ncs_write_setup + config->ncs_write_pulse + recover;
+
+ if (config->write_cycle < cycle)
+ config->write_cycle = cycle;
+
+ /* Extend write cycle in needed */
+ if (timing->nwe_recover > 0)
+ recover = ns2cyc(timing->nwe_recover);
+ else
+ recover = 1;
+
+ cycle = config->nwe_setup + config->nwe_pulse + recover;
+
+ if (config->write_cycle < cycle)
+ config->write_cycle = cycle;
+}
+EXPORT_SYMBOL(smc_set_timing);
+
+int smc_set_configuration(int cs, const struct smc_config *config)
+{
+ unsigned long offset;
+ u32 setup, pulse, cycle, mode;
+
+ if (!hsmc)
+ return -ENODEV;
+ if (cs >= NR_CHIP_SELECTS)
+ return -EINVAL;
+
+ setup = (HSMC_BF(NWE_SETUP, config->nwe_setup)
+ | HSMC_BF(NCS_WR_SETUP, config->ncs_write_setup)
+ | HSMC_BF(NRD_SETUP, config->nrd_setup)
+ | HSMC_BF(NCS_RD_SETUP, config->ncs_read_setup));
+ pulse = (HSMC_BF(NWE_PULSE, config->nwe_pulse)
+ | HSMC_BF(NCS_WR_PULSE, config->ncs_write_pulse)
+ | HSMC_BF(NRD_PULSE, config->nrd_pulse)
+ | HSMC_BF(NCS_RD_PULSE, config->ncs_read_pulse));
+ cycle = (HSMC_BF(NWE_CYCLE, config->write_cycle)
+ | HSMC_BF(NRD_CYCLE, config->read_cycle));
switch (config->bus_width) {
case 1:
diff --git a/arch/avr32/mach-at32ap/pio.c b/arch/avr32/mach-at32ap/pio.c
index 1eb99b8..c978c36 100644
--- a/arch/avr32/mach-at32ap/pio.c
+++ b/arch/avr32/mach-at32ap/pio.c
@@ -110,6 +110,10 @@ void __init at32_select_gpio(unsigned int pin, unsigned long flags)
pio_writel(pio, SODR, mask);
else
pio_writel(pio, CODR, mask);
+ if (flags & AT32_GPIOF_MULTIDRV)
+ pio_writel(pio, MDER, mask);
+ else
+ pio_writel(pio, MDDR, mask);
pio_writel(pio, PUDR, mask);
pio_writel(pio, OER, mask);
} else {
@@ -158,6 +162,82 @@ fail:
dump_stack();
}
+#ifdef CONFIG_GPIO_DEV
+
+/* Gang allocators and accessors; used by the GPIO /dev driver */
+int at32_gpio_port_is_valid(unsigned int port)
+{
+ return port < MAX_NR_PIO_DEVICES && pio_dev[port].regs != NULL;
+}
+
+int at32_select_gpio_pins(unsigned int port, u32 pins, u32 oe_mask)
+{
+ struct pio_device *pio;
+ u32 old, new;
+
+ pio = &pio_dev[port];
+ BUG_ON(port > ARRAY_SIZE(pio_dev) || !pio->regs || (oe_mask & ~pins));
+
+ /* Try to allocate the pins */
+ do {
+ old = pio->pinmux_mask;
+ if (old & pins)
+ return -EBUSY;
+
+ new = old | pins;
+ } while (cmpxchg(&pio->pinmux_mask, old, new) != old);
+
+ /* That went well, now configure the port */
+ pio_writel(pio, OER, oe_mask);
+ pio_writel(pio, PER, pins);
+
+ return 0;
+}
+
+void at32_deselect_pins(unsigned int port, u32 pins)
+{
+ struct pio_device *pio;
+ u32 old, new;
+
+ pio = &pio_dev[port];
+ BUG_ON(port > ARRAY_SIZE(pio_dev) || !pio->regs);
+
+ /* Return to a "safe" mux configuration */
+ pio_writel(pio, PUER, pins);
+ pio_writel(pio, ODR, pins);
+
+ /* Deallocate the pins */
+ do {
+ old = pio->pinmux_mask;
+ new = old & ~pins;
+ } while (cmpxchg(&pio->pinmux_mask, old, new) != old);
+}
+
+u32 at32_gpio_get_value_multiple(unsigned int port, u32 pins)
+{
+ struct pio_device *pio;
+
+ pio = &pio_dev[port];
+ BUG_ON(port > ARRAY_SIZE(pio_dev) || !pio->regs);
+
+ return pio_readl(pio, PDSR) & pins;
+}
+
+void at32_gpio_set_value_multiple(unsigned int port, u32 value, u32 mask)
+{
+ struct pio_device *pio;
+
+ pio = &pio_dev[port];
+ BUG_ON(port > ARRAY_SIZE(pio_dev) || !pio->regs);
+
+ /* No atomic updates for now... */
+ pio_writel(pio, CODR, ~value & mask);
+ pio_writel(pio, SODR, value & mask);
+}
+
+#endif /* CONFIG_GPIO_DEV */
+
+
/*--------------------------------------------------------------------------*/
/* GPIO API */
diff --git a/arch/avr32/mach-at32ap/pm.h b/arch/avr32/mach-at32ap/pm.h
index a1f8ace..47efd0d 100644
--- a/arch/avr32/mach-at32ap/pm.h
+++ b/arch/avr32/mach-at32ap/pm.h
@@ -4,6 +4,14 @@
#ifndef __ARCH_AVR32_MACH_AT32AP_PM_H__
#define __ARCH_AVR32_MACH_AT32AP_PM_H__
+/*
+ * We can reduce the code size a bit by using a constant here. Since
+ * this file is only used on AVR32 AP CPUs with segmentation enabled,
+ * it's safe to not use ioremap. Generic drivers should of course
+ * never do this.
+ */
+#define AT32_PM_BASE 0xfff00000
+
/* PM register offsets */
#define PM_MCCTRL 0x0000
#define PM_CKSEL 0x0004
diff --git a/arch/avr32/mm/dma-coherent.c b/arch/avr32/mm/dma-coherent.c
index 099212d..26f29c6 100644
--- a/arch/avr32/mm/dma-coherent.c
+++ b/arch/avr32/mm/dma-coherent.c
@@ -41,6 +41,13 @@ static struct page *__dma_alloc(struct device *dev, size_t size,
struct page *page, *free, *end;
int order;
+ /* Following is a work-around (a.k.a. hack) to prevent pages
+ * with __GFP_COMP being passed to split_page() which cannot
+ * handle them. The real problem is that this flag probably
+ * should be 0 on AVR32 as it is not supported on this
+ * platform--see CONFIG_HUGETLB_PAGE. */
+ gfp &= ~(__GFP_COMP);
+
size = PAGE_ALIGN(size);
order = get_order(size);
diff --git a/arch/avr32/mm/init.c b/arch/avr32/mm/init.c
index 82cf708..480760b 100644
--- a/arch/avr32/mm/init.c
+++ b/arch/avr32/mm/init.c
@@ -224,19 +224,9 @@ void free_initmem(void)
#ifdef CONFIG_BLK_DEV_INITRD
-static int keep_initrd;
-
void free_initrd_mem(unsigned long start, unsigned long end)
{
- if (!keep_initrd)
- free_area(start, end, "initrd");
-}
-
-static int __init keepinitrd_setup(char *__unused)
-{
- keep_initrd = 1;
- return 1;
+ free_area(start, end, "initrd");
}
-__setup("keepinitrd", keepinitrd_setup);
#endif
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 9f3a4cd..6f5bcd6 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -80,6 +80,14 @@ config I2C_AT91
This supports the use of the I2C interface on Atmel AT91
processors.
+config I2C_ATMELTWI
+ tristate "Atmel Two-Wire Interface (TWI)"
+ depends on I2C && (ARCH_AT91 || PLATFORM_AT32AP)
+ help
+ Atmel on-chip TWI controller. Say Y if you have an AT32 or
+ AT91-based device and want to use its built-in TWI
+ functionality.
+
config I2C_AU1550
tristate "Au1550/Au1200 SMBus interface"
depends on SOC_AU1550 || SOC_AU1200
diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile
index 5b752e4..e4644a8 100644
--- a/drivers/i2c/busses/Makefile
+++ b/drivers/i2c/busses/Makefile
@@ -52,6 +52,7 @@ obj-$(CONFIG_I2C_VIAPRO) += i2c-viapro.o
obj-$(CONFIG_I2C_VOODOO3) += i2c-voodoo3.o
obj-$(CONFIG_SCx200_ACB) += scx200_acb.o
obj-$(CONFIG_SCx200_I2C) += scx200_i2c.o
+obj-$(CONFIG_I2C_ATMELTWI) += i2c-atmeltwi.o
ifeq ($(CONFIG_I2C_DEBUG_BUS),y)
EXTRA_CFLAGS += -DDEBUG
diff --git a/drivers/i2c/busses/i2c-atmeltwi.c b/drivers/i2c/busses/i2c-atmeltwi.c
new file mode 100644
index 0000000..3f78b31
--- /dev/null
+++ b/drivers/i2c/busses/i2c-atmeltwi.c
@@ -0,0 +1,436 @@
+/*
+ * i2c Support for Atmel's Two-Wire Interface (TWI)
+ *
+ * Based on the work of Copyright (C) 2004 Rick Bronson
+ * Converted to 2.6 by Andrew Victor <andrew at sanpeople.com>
+ * Ported to AVR32 and heavily modified by Espen Krangnes
+ * <ekrangnes at atmel.com>
+ *
+ * Copyright (C) 2006 Atmel Corporation
+ *
+ * Borrowed heavily from the original work by:
+ * Copyright (C) 2000 Philip Edelbrock <phil at stimpy.netroedge.com>
+ *
+ * Partialy rewriten by Karel Hojdar <cmkaho at seznam.cz>
+ * bugs removed, interrupt routine markedly rewritten
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+#undef VERBOSE_DEBUG
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/completion.h>
+#include <linux/io.h>
+
+#include "i2c-atmeltwi.h"
+
+static unsigned int baudrate = 100 * 1000;
+module_param(baudrate, uint, S_IRUGO);
+MODULE_PARM_DESC(baudrate, "The TWI baudrate");
+
+
+struct atmel_twi {
+ void __iomem *regs;
+ struct i2c_adapter adapter;
+ struct clk *pclk;
+ struct completion comp;
+ u32 mask;
+ u8 *buf;
+ u16 len;
+ u16 acks_left;
+ int status;
+ unsigned int irq;
+
+};
+#define to_atmel_twi(adap) container_of(adap, struct atmel_twi, adapter)
+
+/*
+ * (Re)Initialize the TWI hardware registers.
+ */
+static int twi_hwinit(struct atmel_twi *twi)
+{
+ unsigned long cdiv, ckdiv = 0;
+
+ /* REVISIT: wait till SCL is high before resetting; otherwise,
+ * some versions will wedge forever.
+ */
+
+ twi_writel(twi, IDR, ~0UL);
+ twi_writel(twi, CR, TWI_BIT(SWRST)); /*Reset peripheral*/
+ twi_readl(twi, SR);
+
+ cdiv = (clk_get_rate(twi->pclk) / (2 * baudrate)) - 4;
+
+ while (cdiv > 255) {
+ ckdiv++;
+ cdiv = cdiv >> 1;
+ }
+
+ /* REVISIT: there are various errata to consider re CDIV and CHDIV
+ * here, at least on at91 parts.
+ */
+
+ if (ckdiv > 7)
+ return -EINVAL;
+ else
+ twi_writel(twi, CWGR, TWI_BF(CKDIV, ckdiv)
+ | TWI_BF(CHDIV, cdiv)
+ | TWI_BF(CLDIV, cdiv));
+ return 0;
+}
+
+/*
+ * Waits for the i2c status register to set the specified bitmask
+ * Returns 0 if timed out ... ~100ms is much longer than the SMBus
+ * limit, but I2C has no limit at all.
+ */
+static int twi_complete(struct atmel_twi *twi, u32 mask)
+{
+ int timeout = msecs_to_jiffies(100);
+
+ mask |= TWI_BIT(TXCOMP);
+ twi->mask = mask | TWI_BIT(NACK) | TWI_BIT(OVRE);
+ init_completion(&twi->comp);
+
+ twi_writel(twi, IER, mask);
+
+ if (!wait_for_completion_timeout(&twi->comp, timeout)) {
+ /* RESET TWI interface */
+ twi_writel(twi, CR, TWI_BIT(SWRST));
+
+ /* Reinitialize TWI */
+ twi_hwinit(twi);
+
+ return -ETIMEDOUT;
+ }
+ return 0;
+}
+
+/*
+ * Generic i2c master transfer entrypoint.
+ */
+static int twi_xfer(struct i2c_adapter *adap, struct i2c_msg *pmsg, int num)
+{
+ struct atmel_twi *twi = to_atmel_twi(adap);
+ int i;
+
+ dev_dbg(&adap->dev, "twi_xfer: processing %d messages:\n", num);
+
+ twi->status = 0;
+ for (i = 0; i < num; i++, pmsg++) {
+ twi->len = pmsg->len;
+ twi->buf = pmsg->buf;
+ twi->acks_left = pmsg->len;
+ twi_writel(twi, MMR, TWI_BF(DADR, pmsg->addr) |
+ (pmsg->flags & I2C_M_RD ? TWI_BIT(MREAD) : 0));
+ twi_writel(twi, IADR, TWI_BF(IADR, pmsg->addr));
+
+ dev_dbg(&adap->dev,
+ "#%d: %s %d byte%s %s dev 0x%02x\n",
+ i,
+ pmsg->flags & I2C_M_RD ? "reading" : "writing",
+ pmsg->len,
+ pmsg->len > 1 ? "s" : "",
+ pmsg->flags & I2C_M_RD ? "from" : "to", pmsg->addr);
+
+ /* enable */
+ twi_writel(twi, CR, TWI_BIT(MSEN));
+
+ if (pmsg->flags & I2C_M_RD) {
+ /* cleanup after previous RX overruns */
+ while (twi_readl(twi, SR) & TWI_BIT(RXRDY))
+ twi_readl(twi, RHR);
+
+ if (twi->len == 1)
+ twi_writel(twi, CR,
+ TWI_BIT(START) | TWI_BIT(STOP));
+ else
+ twi_writel(twi, CR, TWI_BIT(START));
+
+ if (twi_complete(twi, TWI_BIT(RXRDY)) == -ETIMEDOUT) {
+ dev_dbg(&adap->dev, "RX[%d] timeout. "
+ "Stopped with %d bytes left\n",
+ i, twi->acks_left);
+ return -ETIMEDOUT;
+ }
+ } else {
+ twi_writel(twi, THR, twi->buf[0]);
+ twi->acks_left--;
+ /* REVISIT: some chips don't start automagically:
+ * twi_writel(twi, CR, TWI_BIT(START));
+ */
+ if (twi_complete(twi, TWI_BIT(TXRDY)) == -ETIMEDOUT) {
+ dev_dbg(&adap->dev, "TX[%d] timeout. "
+ "Stopped with %d bytes left\n",
+ i, twi->acks_left);
+ return -ETIMEDOUT;
+ }
+ /* REVISIT: an erratum workaround may be needed here;
+ * see sam9261 "STOP not generated" (START either).
+ */
+ }
+
+ /* Disable TWI interface */
+ twi_writel(twi, CR, TWI_BIT(MSDIS));
+
+ if (twi->status)
+ return twi->status;
+
+ /* WARNING: This driver lies about properly supporting
+ * repeated start, or it would *ALWAYS* return here. It
+ * has issued a STOP. Continuing is a false claim -- that
+ * a second (or third, etc.) message is part of the same
+ * "combined" (no STOPs between parts) message.
+ */
+
+ } /* end cur msg */
+
+ return i;
+}
+
+
+static irqreturn_t twi_interrupt(int irq, void *dev_id)
+{
+ struct atmel_twi *twi = dev_id;
+ int status = twi_readl(twi, SR);
+
+ /* Save state for later debug prints */
+ int old_status = status;
+
+ if (twi->mask & status) {
+
+ status &= twi->mask;
+
+ if (status & TWI_BIT(RXRDY)) {
+ if ((status & TWI_BIT(OVRE)) && twi->acks_left) {
+ /* Note weakness in fault reporting model:
+ * we can't say "the first N of these data
+ * bytes are valid".
+ */
+ dev_err(&twi->adapter.dev,
+ "OVERRUN RX! %04x, lost %d\n",
+ old_status, twi->acks_left);
+ twi->acks_left = 0;
+ twi_writel(twi, CR, TWI_BIT(STOP));
+ twi->status = -EOVERFLOW;
+ } else if (twi->acks_left > 0) {
+ twi->buf[twi->len - twi->acks_left] =
+ twi_readl(twi, RHR);
+ twi->acks_left--;
+ }
+ if (status & TWI_BIT(TXCOMP))
+ goto done;
+ if (twi->acks_left == 1)
+ twi_writel(twi, CR, TWI_BIT(STOP));
+
+ } else if (status & (TWI_BIT(NACK) | TWI_BIT(TXCOMP))) {
+ goto done;
+
+ } else if (status & TWI_BIT(TXRDY)) {
+ if (twi->acks_left > 0) {
+ twi->acks_left--;
+ twi_writel(twi, THR,
+ twi->buf[twi->len - twi->acks_left]);
+ } else
+ twi_writel(twi, CR, TWI_BIT(STOP));
+ }
+
+ if (twi->acks_left == 0)
+ twi_writel(twi, IDR, ~TWI_BIT(TXCOMP));
+ }
+
+ /* enabling this message helps trigger overruns/underruns ... */
+ dev_vdbg(&twi->adapter.dev,
+ "ISR: SR 0x%04X, mask 0x%04X, acks %i\n",
+ old_status,
+ twi->acks_left ? twi->mask : TWI_BIT(TXCOMP),
+ twi->acks_left);
+
+ return IRQ_HANDLED;
+
+done:
+ /* Note weak fault reporting model: we can't report how many
+ * bytes we sent before the NAK, or let upper layers choose
+ * whether to continue. The I2C stack doesn't allow that...
+ */
+ if (status & TWI_BIT(NACK)) {
+ dev_dbg(&twi->adapter.dev, "NACK received! %d to go\n",
+ twi->acks_left);
+ twi->status = -EPIPE;
+
+ /* TX underrun morphs automagically into a premature STOP;
+ * we'll probably observe UVRE even when it's not documented.
+ */
+ } else if (twi->acks_left && (twi->mask & TWI_BIT(TXRDY))) {
+ dev_err(&twi->adapter.dev, "UNDERRUN TX! %04x, %d to go\n",
+ old_status, twi->acks_left);
+ twi->status = -ENOSR;
+ }
+
+ twi_writel(twi, IDR, ~0UL);
+ complete(&twi->comp);
+
+ dev_dbg(&twi->adapter.dev, "ISR: SR 0x%04X, acks %i --> %d\n",
+ old_status, twi->acks_left, twi->status);
+
+ return IRQ_HANDLED;
+}
+
+
+/*
+ * Return list of supported functionality.
+ *
+ * NOTE: see warning above about repeated starts; this driver is falsely
+ * claiming to support "combined" transfers. The mid-message STOPs mean
+ * some slaves will never work with this driver. (Use i2c-gpio...)
+ */
+static u32 twi_func(struct i2c_adapter *adapter)
+{
+ return (I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL)
+ & ~I2C_FUNC_SMBUS_QUICK;
+}
+
+static struct i2c_algorithm twi_algorithm = {
+ .master_xfer = twi_xfer,
+ .functionality = twi_func,
+};
+
+/*
+ * Main initialization routine.
+ */
+static int __init twi_probe(struct platform_device *pdev)
+{
+ struct atmel_twi *twi;
+ struct resource *regs;
+ struct clk *pclk;
+ struct i2c_adapter *adapter;
+ int rc, irq;
+
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!regs)
+ return -ENXIO;
+
+ pclk = clk_get(&pdev->dev, "pclk");
+ if (IS_ERR(pclk))
+ return PTR_ERR(pclk);
+ clk_enable(pclk);
+
+ rc = -ENOMEM;
+ twi = kzalloc(sizeof(struct atmel_twi), GFP_KERNEL);
+ if (!twi) {
+ dev_dbg(&pdev->dev, "can't allocate interface!\n");
+ goto err_alloc_twi;
+ }
+
+ twi->pclk = pclk;
+ twi->regs = ioremap(regs->start, regs->end - regs->start + 1);
+ if (!twi->regs)
+ goto err_ioremap;
+
+ irq = platform_get_irq(pdev, 0);
+ rc = request_irq(irq, twi_interrupt, 0, "twi", twi);
+ if (rc) {
+ dev_dbg(&pdev->dev, "can't bind irq!\n");
+ goto err_irq;
+ }
+ twi->irq = irq;
+
+ rc = twi_hwinit(twi);
+ if (rc) {
+ dev_err(&pdev->dev, "Unable to set baudrate\n");
+ goto err_hw_init;
+ }
+
+ adapter = &twi->adapter;
+ sprintf(adapter->name, "TWI");
+ adapter->algo = &twi_algorithm;
+ adapter->class = I2C_CLASS_ALL;
+ adapter->nr = pdev->id;
+ adapter->dev.parent = &pdev->dev;
+
+ platform_set_drvdata(pdev, twi);
+
+ rc = i2c_add_numbered_adapter(adapter);
+ if (rc) {
+ dev_dbg(&pdev->dev, "Adapter %s registration failed\n",
+ adapter->name);
+ goto err_register;
+ }
+
+ dev_info(&pdev->dev,
+ "Atmel TWI/I2C adapter (baudrate %dk) at 0x%08lx.\n",
+ baudrate/1000, (unsigned long)regs->start);
+
+ return 0;
+
+
+err_register:
+ platform_set_drvdata(pdev, NULL);
+
+err_hw_init:
+ free_irq(irq, twi);
+
+err_irq:
+ iounmap(twi->regs);
+
+err_ioremap:
+ kfree(twi);
+
+err_alloc_twi:
+ clk_disable(pclk);
+ clk_put(pclk);
+
+ return rc;
+}
+
+static int __exit twi_remove(struct platform_device *pdev)
+{
+ struct atmel_twi *twi = platform_get_drvdata(pdev);
+ int res;
+
+ platform_set_drvdata(pdev, NULL);
+ res = i2c_del_adapter(&twi->adapter);
+ twi_writel(twi, CR, TWI_BIT(MSDIS));
+ iounmap(twi->regs);
+ clk_disable(twi->pclk);
+ clk_put(twi->pclk);
+ free_irq(twi->irq, twi);
+ kfree(twi);
+
+ return res;
+}
+
+static struct platform_driver twi_driver = {
+ .remove = __exit_p(twi_remove),
+ .driver = {
+ .name = "atmel_twi",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init atmel_twi_init(void)
+{
+ return platform_driver_probe(&twi_driver, twi_probe);
+}
+
+static void __exit atmel_twi_exit(void)
+{
+ platform_driver_unregister(&twi_driver);
+}
+
+module_init(atmel_twi_init);
+module_exit(atmel_twi_exit);
+
+MODULE_AUTHOR("Espen Krangnes");
+MODULE_DESCRIPTION("I2C driver for Atmel TWI");
+MODULE_LICENSE("GPL");
diff --git a/drivers/i2c/busses/i2c-atmeltwi.h b/drivers/i2c/busses/i2c-atmeltwi.h
new file mode 100644
index 0000000..1aca065
--- /dev/null
+++ b/drivers/i2c/busses/i2c-atmeltwi.h
@@ -0,0 +1,117 @@
+/*
+ * Register definitions for the Atmel Two-Wire Interface
+ */
+
+#ifndef __ATMELTWI_H__
+#define __ATMELTWI_H__
+
+/* TWI register offsets */
+#define TWI_CR 0x0000
+#define TWI_MMR 0x0004
+#define TWI_SMR 0x0008
+#define TWI_IADR 0x000c
+#define TWI_CWGR 0x0010
+#define TWI_SR 0x0020
+#define TWI_IER 0x0024
+#define TWI_IDR 0x0028
+#define TWI_IMR 0x002c
+#define TWI_RHR 0x0030
+#define TWI_THR 0x0034
+
+/* Bitfields in CR */
+#define TWI_START_OFFSET 0
+#define TWI_START_SIZE 1
+#define TWI_STOP_OFFSET 1
+#define TWI_STOP_SIZE 1
+#define TWI_MSEN_OFFSET 2
+#define TWI_MSEN_SIZE 1
+#define TWI_MSDIS_OFFSET 3
+#define TWI_MSDIS_SIZE 1
+#define TWI_SVEN_OFFSET 4
+#define TWI_SVEN_SIZE 1
+#define TWI_SVDIS_OFFSET 5
+#define TWI_SVDIS_SIZE 1
+#define TWI_SWRST_OFFSET 7
+#define TWI_SWRST_SIZE 1
+
+/* Bitfields in MMR */
+#define TWI_IADRSZ_OFFSET 8
+#define TWI_IADRSZ_SIZE 2
+#define TWI_MREAD_OFFSET 12
+#define TWI_MREAD_SIZE 1
+#define TWI_DADR_OFFSET 16
+#define TWI_DADR_SIZE 7
+
+/* Bitfields in SMR */
+#define TWI_SADR_OFFSET 16
+#define TWI_SADR_SIZE 7
+
+/* Bitfields in IADR */
+#define TWI_IADR_OFFSET 0
+#define TWI_IADR_SIZE 24
+
+/* Bitfields in CWGR */
+#define TWI_CLDIV_OFFSET 0
+#define TWI_CLDIV_SIZE 8
+#define TWI_CHDIV_OFFSET 8
+#define TWI_CHDIV_SIZE 8
+#define TWI_CKDIV_OFFSET 16
+#define TWI_CKDIV_SIZE 3
+
+/* Bitfields in SR */
+#define TWI_TXCOMP_OFFSET 0
+#define TWI_TXCOMP_SIZE 1
+#define TWI_RXRDY_OFFSET 1
+#define TWI_RXRDY_SIZE 1
+#define TWI_TXRDY_OFFSET 2
+#define TWI_TXRDY_SIZE 1
+#define TWI_SVDIR_OFFSET 3
+#define TWI_SVDIR_SIZE 1
+#define TWI_SVACC_OFFSET 4
+#define TWI_SVACC_SIZE 1
+#define TWI_GCACC_OFFSET 5
+#define TWI_GCACC_SIZE 1
+#define TWI_OVRE_OFFSET 6
+#define TWI_OVRE_SIZE 1
+#define TWI_UNRE_OFFSET 7
+#define TWI_UNRE_SIZE 1
+#define TWI_NACK_OFFSET 8
+#define TWI_NACK_SIZE 1
+#define TWI_ARBLST_OFFSET 9
+#define TWI_ARBLST_SIZE 1
+
+/* Bitfields in RHR */
+#define TWI_RXDATA_OFFSET 0
+#define TWI_RXDATA_SIZE 8
+
+/* Bitfields in THR */
+#define TWI_TXDATA_OFFSET 0
+#define TWI_TXDATA_SIZE 8
+
+/* Constants for IADRSZ */
+#define TWI_IADRSZ_NO_ADDR 0
+#define TWI_IADRSZ_ONE_BYTE 1
+#define TWI_IADRSZ_TWO_BYTES 2
+#define TWI_IADRSZ_THREE_BYTES 3
+
+/* Bit manipulation macros */
+#define TWI_BIT(name) \
+ (1 << TWI_##name##_OFFSET)
+#define TWI_BF(name, value) \
+ (((value) & ((1 << TWI_##name##_SIZE) - 1)) \
+ << TWI_##name##_OFFSET)
+#define TWI_BFEXT(name, value) \
+ (((value) >> TWI_##name##_OFFSET) \
+ & ((1 << TWI_##name##_SIZE) - 1))
+#define TWI_BFINS(name, value, old) \
+ (((old) & ~(((1 << TWI_##name##_SIZE) - 1) \
+ << TWI_##name##_OFFSET)) \
+ | TWI_BF(name, (value)))
+
+/* Register access macros */
+#define twi_readl(port, reg) \
+ __raw_readl((port)->regs + TWI_##reg)
+#define twi_writel(port, reg, value) \
+ __raw_writel((value), (port)->regs + TWI_##reg)
+
+#endif /* __ATMELTWI_H__ */
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 73e248f..9e848cc 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -202,5 +202,14 @@ config THINKPAD_ACPI_BAY
If you are not sure, say Y here.
+config ATMEL_SSC
+ tristate "Device driver for Atmel SSC peripheral"
+ depends on AVR32 || ARCH_AT91
+ ---help---
+ This option enables device driver support for Atmel Syncronized
+ Serial Communication peripheral (SSC).
+
+ The SSC peripheral supports a wide variety of serial frame based
+ communications, i.e. I2S, SPI, etc.
endif # MISC_DEVICES
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index b5ce0e3..40d8ed1 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -15,3 +15,4 @@ obj-$(CONFIG_SGI_IOC4) += ioc4.o
obj-$(CONFIG_SONY_LAPTOP) += sony-laptop.o
obj-$(CONFIG_THINKPAD_ACPI) += thinkpad_acpi.o
obj-$(CONFIG_EEPROM_93CX6) += eeprom_93cx6.o
+obj-$(CONFIG_ATMEL_SSC) += atmel-ssc.o
diff --git a/drivers/misc/atmel-ssc.c b/drivers/misc/atmel-ssc.c
new file mode 100644
index 0000000..058ccac
--- /dev/null
+++ b/drivers/misc/atmel-ssc.c
@@ -0,0 +1,174 @@
+/*
+ * Atmel SSC driver
+ *
+ * Copyright (C) 2007 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/list.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/atmel-ssc.h>
+
+/* Serialize access to ssc_list and user count */
+static DEFINE_SPINLOCK(user_lock);
+static LIST_HEAD(ssc_list);
+
+struct ssc_device *ssc_request(unsigned int ssc_num)
+{
+ int ssc_valid = 0;
+ struct ssc_device *ssc;
+
+ spin_lock(&user_lock);
+ list_for_each_entry(ssc, &ssc_list, list) {
+ if (ssc->pdev->id == ssc_num) {
+ ssc_valid = 1;
+ break;
+ }
+ }
+
+ if (!ssc_valid) {
+ spin_unlock(&user_lock);
+ dev_dbg(&ssc->pdev->dev, "could not find requested device\n");
+ return ERR_PTR(-ENODEV);
+ }
+
+ if (ssc->user) {
+ spin_unlock(&user_lock);
+ dev_dbg(&ssc->pdev->dev, "module busy\n");
+ return ERR_PTR(-EBUSY);
+ }
+ ssc->user++;
+ spin_unlock(&user_lock);
+
+ clk_enable(ssc->clk);
+
+ return ssc;
+}
+EXPORT_SYMBOL(ssc_request);
+
+void ssc_free(struct ssc_device *ssc)
+{
+ spin_lock(&user_lock);
+ if (ssc->user) {
+ ssc->user--;
+ clk_disable(ssc->clk);
+ } else {
+ dev_dbg(&ssc->pdev->dev, "device already free\n");
+ }
+ spin_unlock(&user_lock);
+}
+EXPORT_SYMBOL(ssc_free);
+
+static int __init ssc_probe(struct platform_device *pdev)
+{
+ int retval = 0;
+ struct resource *regs;
+ struct ssc_device *ssc;
+
+ ssc = kzalloc(sizeof(struct ssc_device), GFP_KERNEL);
+ if (!ssc) {
+ dev_dbg(&pdev->dev, "out of memory\n");
+ retval = -ENOMEM;
+ goto out;
+ }
+
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!regs) {
+ dev_dbg(&pdev->dev, "no mmio resource defined\n");
+ retval = -ENXIO;
+ goto out_free;
+ }
+
+ ssc->clk = clk_get(&pdev->dev, "pclk");
+ if (IS_ERR(ssc->clk)) {
+ dev_dbg(&pdev->dev, "no pclk clock defined\n");
+ retval = -ENXIO;
+ goto out_free;
+ }
+
+ ssc->pdev = pdev;
+ ssc->regs = ioremap(regs->start, regs->end - regs->start + 1);
+ if (!ssc->regs) {
+ dev_dbg(&pdev->dev, "ioremap failed\n");
+ retval = -EINVAL;
+ goto out_clk;
+ }
+
+ /* disable all interrupts */
+ clk_enable(ssc->clk);
+ ssc_writel(ssc->regs, IDR, ~0UL);
+ ssc_readl(ssc->regs, SR);
+ clk_disable(ssc->clk);
+
+ ssc->irq = platform_get_irq(pdev, 0);
+ if (!ssc->irq) {
+ dev_dbg(&pdev->dev, "could not get irq\n");
+ retval = -ENXIO;
+ goto out_unmap;
+ }
+
+ spin_lock(&user_lock);
+ list_add_tail(&ssc->list, &ssc_list);
+ spin_unlock(&user_lock);
+
+ platform_set_drvdata(pdev, ssc);
+
+ dev_info(&pdev->dev, "Atmel SSC device at 0x%p (irq %d)\n",
+ ssc->regs, ssc->irq);
+
+ goto out;
+
+out_unmap:
+ iounmap(ssc->regs);
+out_clk:
+ clk_put(ssc->clk);
+out_free:
+ kfree(ssc);
+out:
+ return retval;
+}
+
+static int __devexit ssc_remove(struct platform_device *pdev)
+{
+ struct ssc_device *ssc = platform_get_drvdata(pdev);
+
+ spin_lock(&user_lock);
+ iounmap(ssc->regs);
+ clk_put(ssc->clk);
+ list_del(&ssc->list);
+ kfree(ssc);
+ spin_unlock(&user_lock);
+
+ return 0;
+}
+
+static struct platform_driver ssc_driver = {
+ .remove = __devexit_p(ssc_remove),
+ .driver = {
+ .name = "ssc",
+ },
+};
+
+static int __init ssc_init(void)
+{
+ return platform_driver_probe(&ssc_driver, ssc_probe);
+}
+module_init(ssc_init);
+
+static void __exit ssc_exit(void)
+{
+ platform_driver_unregister(&ssc_driver);
+}
+module_exit(ssc_exit);
+
+MODULE_AUTHOR("Hans-Christian Egtvedt <hcegtvedt@atmel.com>");
+MODULE_DESCRIPTION("SSC driver for Atmel AVR32 and AT91");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index e23082f..1de1716 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -74,6 +74,16 @@ config MMC_AT91
If unsure, say N.
+config MMC_ATMELMCI
+ tristate "Atmel Multimedia Card Interface support"
+ depends on AVR32 && MMC
+ help
+ This selects the Atmel Multimedia Card Interface. If you have
+ a AT91 (ARM) or AT32 (AVR32) platform with a Multimedia Card
+ slot, say Y or M here.
+
+ If unsure, say N.
+
config MMC_IMX
tristate "Motorola i.MX Multimedia Card Interface support"
depends on ARCH_IMX
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index 6685f64..4b8e6e2 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -14,5 +14,6 @@ obj-$(CONFIG_MMC_WBSD) += wbsd.o
obj-$(CONFIG_MMC_AU1X) += au1xmmc.o
obj-$(CONFIG_MMC_OMAP) += omap.o
obj-$(CONFIG_MMC_AT91) += at91_mci.o
+obj-$(CONFIG_MMC_ATMELMCI) += atmel-mci.o
obj-$(CONFIG_MMC_TIFM_SD) += tifm_sd.o
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
new file mode 100644
index 0000000..45323c9
--- /dev/null
+++ b/drivers/mmc/host/atmel-mci.c
@@ -0,0 +1,1161 @@
+/*
+ * Atmel MultiMedia Card Interface driver
+ *
+ * Copyright (C) 2004-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/blkdev.h>
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <linux/mmc/host.h>
+
+#include <asm/dma-controller.h>
+#include <asm/io.h>
+#include <asm/arch/board.h>
+#include <asm/arch/gpio.h>
+
+#include "atmel-mci.h"
+
+#define DRIVER_NAME "atmel_mci"
+
+#define MCI_DATA_ERROR_FLAGS (MCI_BIT(DCRCE) | MCI_BIT(DTOE) | \
+ MCI_BIT(OVRE) | MCI_BIT(UNRE))
+
+enum {
+ EVENT_CMD_COMPLETE = 0,
+ EVENT_DATA_COMPLETE,
+ EVENT_DATA_ERROR,
+ EVENT_STOP_SENT,
+ EVENT_STOP_COMPLETE,
+ EVENT_DMA_ERROR,
+ EVENT_CARD_DETECT,
+};
+
+struct atmel_mci_dma {
+ struct dma_request_sg req;
+ unsigned short rx_periph_id;
+ unsigned short tx_periph_id;
+};
+
+struct atmel_mci {
+ struct mmc_host *mmc;
+ void __iomem *regs;
+ struct atmel_mci_dma dma;
+
+ struct mmc_request *mrq;
+ struct mmc_command *cmd;
+ struct mmc_data *data;
+
+ u32 cmd_status;
+ u32 data_status;
+ u32 stop_status;
+ u32 stop_cmdr;
+
+ struct tasklet_struct tasklet;
+ unsigned long pending_events;
+ unsigned long completed_events;
+
+ int present;
+ int detect_pin;
+ int wp_pin;
+
+ unsigned long bus_hz;
+ unsigned long mapbase;
+ struct clk *mck;
+ struct platform_device *pdev;
+
+#ifdef CONFIG_DEBUG_FS
+ struct dentry *debugfs_root;
+ struct dentry *debugfs_regs;
+ struct dentry *debugfs_req;
+ struct dentry *debugfs_pending_events;
+ struct dentry *debugfs_completed_events;
+#endif
+};
+
+/* Those printks take an awful lot of time... */
+#ifndef DEBUG
+static unsigned int fmax = 15000000U;
+#else
+static unsigned int fmax = 1000000U;
+#endif
+module_param(fmax, uint, 0444);
+MODULE_PARM_DESC(fmax, "Max frequency in Hz of the MMC bus clock");
+
+/* Test bit macros for completed events */
+#define mci_cmd_is_complete(host) \
+ test_bit(EVENT_CMD_COMPLETE, &host->completed_events)
+#define mci_data_is_complete(host) \
+ test_bit(EVENT_DATA_COMPLETE, &host->completed_events)
+#define mci_data_error_is_complete(host) \
+ test_bit(EVENT_DATA_ERROR, &host->completed_events)
+#define mci_stop_sent_is_complete(host) \
+ test_bit(EVENT_STOP_SENT, &host->completed_events)
+#define mci_stop_is_complete(host) \
+ test_bit(EVENT_STOP_COMPLETE, &host->completed_events)
+#define mci_dma_error_is_complete(host) \
+ test_bit(EVENT_DMA_ERROR, &host->completed_events)
+#define mci_card_detect_is_complete(host) \
+ test_bit(EVENT_CARD_DETECT, &host->completed_events)
+
+/* Test and clear bit macros for pending events */
+#define mci_clear_cmd_is_pending(host) \
+ test_and_clear_bit(EVENT_CMD_COMPLETE, &host->pending_events)
+#define mci_clear_data_is_pending(host) \
+ test_and_clear_bit(EVENT_DATA_COMPLETE, &host->pending_events)
+#define mci_clear_data_error_is_pending(host) \
+ test_and_clear_bit(EVENT_DATA_ERROR, &host->pending_events)
+#define mci_clear_stop_sent_is_pending(host) \
+ test_and_clear_bit(EVENT_STOP_SENT, &host->pending_events)
+#define mci_clear_stop_is_pending(host) \
+ test_and_clear_bit(EVENT_STOP_COMPLETE, &host->pending_events)
+#define mci_clear_dma_error_is_pending(host) \
+ test_and_clear_bit(EVENT_DMA_ERROR, &host->pending_events)
+#define mci_clear_card_detect_is_pending(host) \
+ test_and_clear_bit(EVENT_CARD_DETECT, &host->pending_events)
+
+/* Test and set bit macros for completed events */
+#define mci_set_cmd_is_completed(host) \
+ test_and_set_bit(EVENT_CMD_COMPLETE, &host->completed_events)
+#define mci_set_data_is_completed(host) \
+ test_and_set_bit(EVENT_DATA_COMPLETE, &host->completed_events)
+#define mci_set_data_error_is_completed(host) \
+ test_and_set_bit(EVENT_DATA_ERROR, &host->completed_events)
+#define mci_set_stop_sent_is_completed(host) \
+ test_and_set_bit(EVENT_STOP_SENT, &host->completed_events)
+#define mci_set_stop_is_completed(host) \
+ test_and_set_bit(EVENT_STOP_COMPLETE, &host->completed_events)
+#define mci_set_dma_error_is_completed(host) \
+ test_and_set_bit(EVENT_DMA_ERROR, &host->completed_events)
+#define mci_set_card_detect_is_completed(host) \
+ test_and_set_bit(EVENT_CARD_DETECT, &host->completed_events)
+
+/* Set bit macros for completed events */
+#define mci_set_cmd_complete(host) \
+ set_bit(EVENT_CMD_COMPLETE, &host->completed_events)
+#define mci_set_data_complete(host) \
+ set_bit(EVENT_DATA_COMPLETE, &host->completed_events)
+#define mci_set_data_error_complete(host) \
+ set_bit(EVENT_DATA_ERROR, &host->completed_events)
+#define mci_set_stop_sent_complete(host) \
+ set_bit(EVENT_STOP_SENT, &host->completed_events)
+#define mci_set_stop_complete(host) \
+ set_bit(EVENT_STOP_COMPLETE, &host->completed_events)
+#define mci_set_dma_error_complete(host) \
+ set_bit(EVENT_DMA_ERROR, &host->completed_events)
+#define mci_set_card_detect_complete(host) \
+ set_bit(EVENT_CARD_DETECT, &host->completed_events)
+
+/* Set bit macros for pending events */
+#define mci_set_cmd_pending(host) \
+ set_bit(EVENT_CMD_COMPLETE, &host->pending_events)
+#define mci_set_data_pending(host) \
+ set_bit(EVENT_DATA_COMPLETE, &host->pending_events)
+#define mci_set_data_error_pending(host) \
+ set_bit(EVENT_DATA_ERROR, &host->pending_events)
+#define mci_set_stop_sent_pending(host) \
+ set_bit(EVENT_STOP_SENT, &host->pending_events)
+#define mci_set_stop_pending(host) \
+ set_bit(EVENT_STOP_COMPLETE, &host->pending_events)
+#define mci_set_dma_error_pending(host) \
+ set_bit(EVENT_DMA_ERROR, &host->pending_events)
+#define mci_set_card_detect_pending(host) \
+ set_bit(EVENT_CARD_DETECT, &host->pending_events)
+
+/* Clear bit macros for pending events */
+#define mci_clear_cmd_pending(host) \
+ clear_bit(EVENT_CMD_COMPLETE, &host->pending_events)
+#define mci_clear_data_pending(host) \
+ clear_bit(EVENT_DATA_COMPLETE, &host->pending_events)
+#define mci_clear_data_error_pending(host) \
+ clear_bit(EVENT_DATA_ERROR, &host->pending_events)
+#define mci_clear_stop_sent_pending(host) \
+ clear_bit(EVENT_STOP_SENT, &host->pending_events)
+#define mci_clear_stop_pending(host) \
+ clear_bit(EVENT_STOP_COMPLETE, &host->pending_events)
+#define mci_clear_dma_error_pending(host) \
+ clear_bit(EVENT_DMA_ERROR, &host->pending_events)
+#define mci_clear_card_detect_pending(host) \
+ clear_bit(EVENT_CARD_DETECT, &host->pending_events)
+
+
+#ifdef CONFIG_DEBUG_FS
+#include <linux/debugfs.h>
+
+#define DBG_REQ_BUF_SIZE (4096 - sizeof(unsigned int))
+
+struct req_dbg_data {
+ unsigned int nbytes;
+ char str[DBG_REQ_BUF_SIZE];
+};
+
+static int req_dbg_open(struct inode *inode, struct file *file)
+{
+ struct atmel_mci *host;
+ struct mmc_request *mrq;
+ struct mmc_command *cmd, *stop;
+ struct mmc_data *data;
+ struct req_dbg_data *priv;
+ char *str;
+ unsigned long n = 0;
+
+ priv = kzalloc(DBG_REQ_BUF_SIZE, GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+ str = priv->str;
+
+ mutex_lock(&inode->i_mutex);
+ host = inode->i_private;
+
+ spin_lock_irq(&host->mmc->lock);
+ mrq = host->mrq;
+ if (mrq) {
+ cmd = mrq->cmd;
+ data = mrq->data;
+ stop = mrq->stop;
+ n = snprintf(str, DBG_REQ_BUF_SIZE,
+ "CMD%u(0x%x) %x %x %x %x %x (err %u)\n",
+ cmd->opcode, cmd->arg, cmd->flags,
+ cmd->resp[0], cmd->resp[1], cmd->resp[2],
+ cmd->resp[3], cmd->error);
+ if (n < DBG_REQ_BUF_SIZE && data)
+ n += snprintf(str + n, DBG_REQ_BUF_SIZE - n,
+ "DATA %u * %u (%u) %x (err %u)\n",
+ data->blocks, data->blksz,
+ data->bytes_xfered, data->flags,
+ data->error);
+ if (n < DBG_REQ_BUF_SIZE && stop)
+ n += snprintf(str + n, DBG_REQ_BUF_SIZE - n,
+ "CMD%u(0x%x) %x %x %x %x %x (err %u)\n",
+ stop->opcode, stop->arg, stop->flags,
+ stop->resp[0], stop->resp[1],
+ stop->resp[2], stop->resp[3],
+ stop->error);
+ }
+ spin_unlock_irq(&host->mmc->lock);
+ mutex_unlock(&inode->i_mutex);
+
+ priv->nbytes = min(n, DBG_REQ_BUF_SIZE);
+ file->private_data = priv;
+
+ return 0;
+}
+
+static ssize_t req_dbg_read(struct file *file, char __user *buf,
+ size_t nbytes, loff_t *ppos)
+{
+ struct req_dbg_data *priv = file->private_data;
+
+ return simple_read_from_buffer(buf, nbytes, ppos,
+ priv->str, priv->nbytes);
+}
+
+static int req_dbg_release(struct inode *inode, struct file *file)
+{
+ kfree(file->private_data);
+ return 0;
+}
+
+static const struct file_operations req_dbg_fops = {
+ .owner = THIS_MODULE,
+ .open = req_dbg_open,
+ .llseek = no_llseek,
+ .read = req_dbg_read,
+ .release = req_dbg_release,
+};
+
+static int regs_dbg_open(struct inode *inode, struct file *file)
+{
+ struct atmel_mci *host;
+ unsigned int i;
+ u32 *data;
+ int ret = -ENOMEM;
+
+ mutex_lock(&inode->i_mutex);
+ host = inode->i_private;
+ data = kmalloc(inode->i_size, GFP_KERNEL);
+ if (!data)
+ goto out;
+
+ spin_lock_irq(&host->mmc->lock);
+ for (i = 0; i < inode->i_size / 4; i++)
+ data[i] = __raw_readl(host->regs + i * 4);
+ spin_unlock_irq(&host->mmc->lock);
+
+ file->private_data = data;
+ ret = 0;
+
+out:
+ mutex_unlock(&inode->i_mutex);
+
+ return ret;
+}
+
+static ssize_t regs_dbg_read(struct file *file, char __user *buf,
+ size_t nbytes, loff_t *ppos)
+{
+ struct inode *inode = file->f_dentry->d_inode;
+ int ret;
+
+ mutex_lock(&inode->i_mutex);
+ ret = simple_read_from_buffer(buf, nbytes, ppos,
+ file->private_data,
+ file->f_dentry->d_inode->i_size);
+ mutex_unlock(&inode->i_mutex);
+
+ return ret;
+}
+
+static int regs_dbg_release(struct inode *inode, struct file *file)
+{
+ kfree(file->private_data);
+ return 0;
+}
+
+static const struct file_operations regs_dbg_fops = {
+ .owner = THIS_MODULE,
+ .open = regs_dbg_open,
+ .llseek = generic_file_llseek,
+ .read = regs_dbg_read,
+ .release = regs_dbg_release,
+};
+
+static void atmci_init_debugfs(struct atmel_mci *host)
+{
+ struct mmc_host *mmc;
+ struct dentry *root, *regs;
+ struct resource *res;
+
+ mmc = host->mmc;
+ root = debugfs_create_dir(mmc_hostname(mmc), NULL);
+ if (IS_ERR(root) || !root)
+ goto err_root;
+ host->debugfs_root = root;
+
+ regs = debugfs_create_file("regs", 0400, root, host, &regs_dbg_fops);
+ if (!regs)
+ goto err_regs;
+
+ res = platform_get_resource(host->pdev, IORESOURCE_MEM, 0);
+ regs->d_inode->i_size = res->end - res->start + 1;
+ host->debugfs_regs = regs;
+
+ host->debugfs_req = debugfs_create_file("req", 0400, root,
+ host, &req_dbg_fops);
+ if (!host->debugfs_req)
+ goto err_req;
+
+ host->debugfs_pending_events
+ = debugfs_create_u32("pending_events", 0400, root,
+ (u32 *)&host->pending_events);
+ if (!host->debugfs_pending_events)
+ goto err_pending_events;
+
+ host->debugfs_completed_events
+ = debugfs_create_u32("completed_events", 0400, root,
+ (u32 *)&host->completed_events);
+ if (!host->debugfs_completed_events)
+ goto err_completed_events;
+
+ return;
+
+err_completed_events:
+ debugfs_remove(host->debugfs_pending_events);
+err_pending_events:
+ debugfs_remove(host->debugfs_req);
+err_req:
+ debugfs_remove(host->debugfs_regs);
+err_regs:
+ debugfs_remove(host->debugfs_root);
+err_root:
+ host->debugfs_root = NULL;
+ dev_err(&host->pdev->dev,
+ "failed to initialize debugfs for %s\n",
+ mmc_hostname(mmc));
+}
+
+static void atmci_cleanup_debugfs(struct atmel_mci *host)
+{
+ if (host->debugfs_root) {
+ debugfs_remove(host->debugfs_completed_events);
+ debugfs_remove(host->debugfs_pending_events);
+ debugfs_remove(host->debugfs_req);
+ debugfs_remove(host->debugfs_regs);
+ debugfs_remove(host->debugfs_root);
+ host->debugfs_root = NULL;
+ }
+}
+#else
+static inline void atmci_init_debugfs(struct atmel_mci *host)
+{
+
+}
+
+static inline void atmci_cleanup_debugfs(struct atmel_mci *host)
+{
+
+}
+#endif /* CONFIG_DEBUG_FS */
+
+static inline unsigned int ns_to_clocks(struct atmel_mci *host,
+ unsigned int ns)
+{
+ return (ns * (host->bus_hz / 1000000) + 999) / 1000;
+}
+
+static void atmci_set_timeout(struct atmel_mci *host,
+ struct mmc_data *data)
+{
+ static unsigned dtomul_to_shift[] = {
+ 0, 4, 7, 8, 10, 12, 16, 20
+ };
+ unsigned timeout;
+ unsigned dtocyc, dtomul;
+
+ timeout = ns_to_clocks(host, data->timeout_ns) + data->timeout_clks;
+
+ for (dtomul = 0; dtomul < 8; dtomul++) {
+ unsigned shift = dtomul_to_shift[dtomul];
+ dtocyc = (timeout + (1 << shift) - 1) >> shift;
+ if (dtocyc < 15)
+ break;
+ }
+
+ if (dtomul >= 8) {
+ dtomul = 7;
+ dtocyc = 15;
+ }
+
+ dev_dbg(&host->mmc->class_dev, "setting timeout to %u cycles\n",
+ dtocyc << dtomul_to_shift[dtomul]);
+ mci_writel(host, DTOR, (MCI_BF(DTOMUL, dtomul)
+ | MCI_BF(DTOCYC, dtocyc)));
+}
+
+/*
+ * Return mask with command flags to be enabled for this command.
+ */
+static u32 atmci_prepare_command(struct mmc_host *mmc,
+ struct mmc_command *cmd)
+{
+ u32 cmdr;
+
+ cmd->error = MMC_ERR_NONE;
+
+ cmdr = MCI_BF(CMDNB, cmd->opcode);
+
+ if (cmd->flags & MMC_RSP_PRESENT) {
+ if (cmd->flags & MMC_RSP_136)
+ cmdr |= MCI_BF(RSPTYP, MCI_RSPTYP_136_BIT);
+ else
+ cmdr |= MCI_BF(RSPTYP, MCI_RSPTYP_48_BIT);
+ }
+
+ /*
+ * This should really be MAXLAT_5 for CMD2 and ACMD41, but
+ * it's too difficult to determine whether this is an ACMD or
+ * not. Better make it 64.
+ */
+ cmdr |= MCI_BIT(MAXLAT);
+
+ if (mmc->ios.bus_mode == MMC_BUSMODE_OPENDRAIN)
+ cmdr |= MCI_BIT(OPDCMD);
+
+ dev_dbg(&mmc->class_dev,
+ "cmd: op %02x arg %08x flags %08x, cmdflags %08lx\n",
+ cmd->opcode, cmd->arg, cmd->flags, (unsigned long)cmdr);
+
+ return cmdr;
+}
+
+static void atmci_start_command(struct atmel_mci *host,
+ struct mmc_command *cmd,
+ u32 cmd_flags)
+{
+ WARN_ON(host->cmd);
+ host->cmd = cmd;
+
+ mci_writel(host, ARGR, cmd->arg);
+ mci_writel(host, CMDR, cmd_flags);
+
+ if (cmd->data)
+ dma_start_request(host->dma.req.req.dmac,
+ host->dma.req.req.channel);
+}
+
+/*
+ * Returns a mask of flags to be set in the command register when the
+ * command to start the transfer is to be sent.
+ */
+static u32 atmci_prepare_data(struct mmc_host *mmc, struct mmc_data *data)
+{
+ struct atmel_mci *host = mmc_priv(mmc);
+ u32 cmd_flags;
+
+ WARN_ON(host->data);
+ host->data = data;
+
+ atmci_set_timeout(host, data);
+ mci_writel(host, BLKR, (MCI_BF(BCNT, data->blocks)
+ | MCI_BF(BLKLEN, data->blksz)));
+ host->dma.req.block_size = data->blksz;
+ host->dma.req.nr_blocks = data->blocks;
+
+ cmd_flags = MCI_BF(TRCMD, MCI_TRCMD_START_TRANS);
+ if (data->flags & MMC_DATA_STREAM)
+ cmd_flags |= MCI_BF(TRTYP, MCI_TRTYP_STREAM);
+ else if (data->blocks > 1)
+ cmd_flags |= MCI_BF(TRTYP, MCI_TRTYP_MULTI_BLOCK);
+ else
+ cmd_flags |= MCI_BF(TRTYP, MCI_TRTYP_BLOCK);
+
+ if (data->flags & MMC_DATA_READ) {
+ cmd_flags |= MCI_BIT(TRDIR);
+ host->dma.req.nr_sg
+ = dma_map_sg(&host->pdev->dev, data->sg,
+ data->sg_len, DMA_FROM_DEVICE);
+ host->dma.req.periph_id = host->dma.rx_periph_id;
+ host->dma.req.direction = DMA_DIR_PERIPH_TO_MEM;
+ host->dma.req.data_reg = host->mapbase + MCI_RDR;
+ } else {
+ host->dma.req.nr_sg
+ = dma_map_sg(&host->pdev->dev, data->sg,
+ data->sg_len, DMA_TO_DEVICE);
+ host->dma.req.periph_id = host->dma.tx_periph_id;
+ host->dma.req.direction = DMA_DIR_MEM_TO_PERIPH;
+ host->dma.req.data_reg = host->mapbase + MCI_TDR;
+ }
+ host->dma.req.sg = data->sg;
+
+ dma_prepare_request_sg(host->dma.req.req.dmac, &host->dma.req);
+
+ return cmd_flags;
+}
+
+static void atmci_request(struct mmc_host *mmc, struct mmc_request *mrq)
+{
+ struct atmel_mci *host = mmc_priv(mmc);
+ struct mmc_data *data = mrq->data;
+ u32 iflags;
+ u32 cmdflags = 0;
+
+ iflags = mci_readl(host, IMR);
+ if (iflags)
+ dev_warn(&mmc->class_dev, "WARNING: IMR=0x%08x\n",
+ mci_readl(host, IMR));
+
+ WARN_ON(host->mrq != NULL);
+ host->mrq = mrq;
+ host->pending_events = 0;
+ host->completed_events = 0;
+
+ iflags = MCI_BIT(CMDRDY);
+ cmdflags = atmci_prepare_command(mmc, mrq->cmd);
+
+ if (mrq->stop) {
+ WARN_ON(!data);
+
+ host->stop_cmdr = atmci_prepare_command(mmc, mrq->stop);
+ host->stop_cmdr |= MCI_BF(TRCMD, MCI_TRCMD_STOP_TRANS);
+ if (!(data->flags & MMC_DATA_WRITE))
+ host->stop_cmdr |= MCI_BIT(TRDIR);
+ if (data->flags & MMC_DATA_STREAM)
+ host->stop_cmdr |= MCI_BF(TRTYP, MCI_TRTYP_STREAM);
+ else
+ host->stop_cmdr |= MCI_BF(TRTYP, MCI_TRTYP_MULTI_BLOCK);
+ }
+ if (data) {
+ cmdflags |= atmci_prepare_data(mmc, data);
+ iflags |= MCI_DATA_ERROR_FLAGS;
+ }
+
+ atmci_start_command(host, mrq->cmd, cmdflags);
+ mci_writel(host, IER, iflags);
+}
+
+static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+ struct atmel_mci *host = mmc_priv(mmc);
+ u32 mr;
+
+ if (ios->clock) {
+ u32 clkdiv;
+
+ /* Set clock rate */
+ clkdiv = host->bus_hz / (2 * ios->clock) - 1;
+ if (clkdiv > 255) {
+ dev_warn(&mmc->class_dev,
+ "clock %u too slow; using %lu\n",
+ ios->clock, host->bus_hz / (2 * 256));
+ clkdiv = 255;
+ }
+
+ mr = mci_readl(host, MR);
+ mr = MCI_BFINS(CLKDIV, clkdiv, mr)
+ | MCI_BIT(WRPROOF) | MCI_BIT(RDPROOF);
+ mci_writel(host, MR, mr);
+
+ /* Enable the MCI controller */
+ mci_writel(host, CR, MCI_BIT(MCIEN));
+ } else {
+ /* Disable the MCI controller */
+ mci_writel(host, CR, MCI_BIT(MCIDIS));
+ }
+
+ switch (ios->bus_width) {
+ case MMC_BUS_WIDTH_1:
+ mci_writel(host, SDCR, 0);
+ break;
+ case MMC_BUS_WIDTH_4:
+ mci_writel(host, SDCR, MCI_BIT(SDCBUS));
+ break;
+ }
+
+ switch (ios->power_mode) {
+ case MMC_POWER_ON:
+ /* Send init sequence (74 clock cycles) */
+ mci_writel(host, IDR, ~0UL);
+ mci_writel(host, CMDR, MCI_BF(SPCMD, MCI_SPCMD_INIT_CMD));
+ while (!(mci_readl(host, SR) & MCI_BIT(CMDRDY)))
+ cpu_relax();
+ break;
+ default:
+ /*
+ * TODO: None of the currently available AVR32-based
+ * boards allow MMC power to be turned off. Implement
+ * power control when this can be tested properly.
+ */
+ break;
+ }
+}
+
+static int atmci_get_ro(struct mmc_host *mmc)
+{
+ int read_only = 0;
+ struct atmel_mci *host = mmc_priv(mmc);
+
+ if (host->wp_pin >= 0) {
+ read_only = gpio_get_value(host->wp_pin);
+ dev_dbg(&mmc->class_dev, "card is %s\n",
+ read_only ? "read-only" : "read-write");
+ } else {
+ dev_dbg(&mmc->class_dev,
+ "no pin for checking read-only switch."
+ " Assuming write-enable.\n");
+ }
+
+ return read_only;
+}
+
+static struct mmc_host_ops atmci_ops = {
+ .request = atmci_request,
+ .set_ios = atmci_set_ios,
+ .get_ro = atmci_get_ro,
+};
+
+static void atmci_request_end(struct mmc_host *mmc, struct mmc_request *mrq)
+{
+ struct atmel_mci *host = mmc_priv(mmc);
+
+ WARN_ON(host->cmd || host->data);
+ host->mrq = NULL;
+
+ mmc_request_done(mmc, mrq);
+}
+
+static void send_stop_cmd(struct mmc_host *mmc, struct mmc_data *data,
+ u32 flags)
+{
+ struct atmel_mci *host = mmc_priv(mmc);
+
+ atmci_start_command(host, data->stop, host->stop_cmdr | flags);
+ mci_writel(host, IER, MCI_BIT(CMDRDY));
+}
+
+static void atmci_data_complete(struct atmel_mci *host, struct mmc_data *data)
+{
+ host->data = NULL;
+ dma_unmap_sg(&host->pdev->dev, data->sg, host->dma.req.nr_sg,
+ ((data->flags & MMC_DATA_WRITE)
+ ? DMA_TO_DEVICE : DMA_FROM_DEVICE));
+
+ /*
+ * Data might complete before command for very short transfers
+ * (like READ_SCR)
+ */
+ if (mci_cmd_is_complete(host)
+ && (!data->stop || mci_stop_is_complete(host)))
+ atmci_request_end(host->mmc, data->mrq);
+}
+
+static void atmci_command_complete(struct atmel_mci *host,
+ struct mmc_command *cmd, u32 status)
+{
+ if (status & MCI_BIT(RTOE))
+ cmd->error = MMC_ERR_TIMEOUT;
+ else if ((cmd->flags & MMC_RSP_CRC)
+ && (status & MCI_BIT(RCRCE)))
+ cmd->error = MMC_ERR_BADCRC;
+ else if (status & (MCI_BIT(RINDE) | MCI_BIT(RDIRE) | MCI_BIT(RENDE)))
+ cmd->error = MMC_ERR_FAILED;
+
+ if (cmd->error != MMC_ERR_NONE) {
+ dev_dbg(&host->mmc->class_dev,
+ "command error: op=0x%x status=0x%08x\n",
+ cmd->opcode, status);
+
+ if (cmd->data) {
+ dma_stop_request(host->dma.req.req.dmac,
+ host->dma.req.req.channel);
+ mci_writel(host, IDR, MCI_BIT(NOTBUSY)
+ | MCI_DATA_ERROR_FLAGS);
+ host->data = NULL;
+ }
+ }
+}
+
+static void atmci_tasklet_func(unsigned long priv)
+{
+ struct mmc_host *mmc = (struct mmc_host *)priv;
+ struct atmel_mci *host = mmc_priv(mmc);
+ struct mmc_request *mrq = host->mrq;
+ struct mmc_data *data = host->data;
+
+ dev_vdbg(&mmc->class_dev,
+ "tasklet: pending/completed/mask %lx/%lx/%x\n",
+ host->pending_events, host->completed_events,
+ mci_readl(host, IMR));
+
+ if (mci_clear_cmd_is_pending(host)) {
+ mci_set_cmd_complete(host);
+ atmci_command_complete(host, mrq->cmd, host->cmd_status);
+ if (!host->data || mci_data_is_complete(host)
+ || mci_data_error_is_complete(host))
+ atmci_request_end(mmc, mrq);
+ }
+ if (mci_clear_stop_is_pending(host)) {
+ mci_set_stop_complete(host);
+ atmci_command_complete(host, mrq->stop, host->stop_status);
+ if (mci_data_is_complete(host)
+ || mci_data_error_is_complete(host))
+ atmci_request_end(mmc, mrq);
+ }
+ if (mci_clear_dma_error_is_pending(host)) {
+ mci_set_dma_error_complete(host);
+ mci_clear_data_pending(host);
+
+ /* DMA controller got bus error => invalid address */
+ data->error = MMC_ERR_INVALID;
+
+ dev_dbg(&mmc->class_dev, "dma error after %u bytes xfered\n",
+ host->data->bytes_xfered);
+
+ if (data->stop
+ && !mci_set_stop_sent_is_completed(host))
+ /* TODO: Check if card is still present */
+ send_stop_cmd(host->mmc, data, 0);
+
+ atmci_data_complete(host, data);
+ }
+ if (mci_clear_data_error_is_pending(host)) {
+ u32 status = host->data_status;
+
+ mci_set_data_error_complete(host);
+ mci_clear_data_pending(host);
+
+ dma_stop_request(host->dma.req.req.dmac,
+ host->dma.req.req.channel);
+
+ if (status & MCI_BIT(DCRCE)) {
+ dev_dbg(&mmc->class_dev, "data CRC error\n");
+ data->error = MMC_ERR_BADCRC;
+ } else if (status & MCI_BIT(DTOE)) {
+ dev_dbg(&mmc->class_dev, "data timeout error\n");
+ data->error = MMC_ERR_TIMEOUT;
+ } else {
+ dev_dbg(&mmc->class_dev, "data FIFO error\n");
+ data->error = MMC_ERR_FIFO;
+ }
+ dev_dbg(&mmc->class_dev, "bytes xfered: %u\n",
+ data->bytes_xfered);
+
+ if (data->stop
+ && !mci_set_stop_sent_is_completed(host))
+ /* TODO: Check if card is still present */
+ send_stop_cmd(host->mmc, data, 0);
+
+ atmci_data_complete(host, data);
+ }
+ if (mci_clear_data_is_pending(host)) {
+ mci_set_data_complete(host);
+ data->bytes_xfered = data->blocks * data->blksz;
+ atmci_data_complete(host, data);
+ }
+ if (mci_clear_card_detect_is_pending(host)) {
+ /* Reset controller if card is gone */
+ if (!host->present) {
+ mci_writel(host, CR, MCI_BIT(SWRST));
+ mci_writel(host, IDR, ~0UL);
+ mci_writel(host, CR, MCI_BIT(MCIEN));
+ }
+
+ /* Clean up queue if present */
+ if (mrq) {
+ if (!mci_cmd_is_complete(host))
+ mrq->cmd->error = MMC_ERR_TIMEOUT;
+ if (mrq->data && !mci_data_is_complete(host)
+ && !mci_data_error_is_complete(host)) {
+ dma_stop_request(host->dma.req.req.dmac,
+ host->dma.req.req.channel);
+ host->data->error = MMC_ERR_TIMEOUT;
+ atmci_data_complete(host, data);
+ }
+ if (mrq->stop && !mci_stop_is_complete(host))
+ mrq->stop->error = MMC_ERR_TIMEOUT;
+
+ host->cmd = NULL;
+ atmci_request_end(mmc, mrq);
+ }
+ mmc_detect_change(host->mmc, msecs_to_jiffies(100));
+ }
+}
+
+static void atmci_cmd_interrupt(struct mmc_host *mmc, u32 status)
+{
+ struct atmel_mci *host = mmc_priv(mmc);
+ struct mmc_command *cmd = host->cmd;
+
+ /*
+ * Read the response now so that we're free to send a new
+ * command immediately.
+ */
+ cmd->resp[0] = mci_readl(host, RSPR);
+ cmd->resp[1] = mci_readl(host, RSPR);
+ cmd->resp[2] = mci_readl(host, RSPR);
+ cmd->resp[3] = mci_readl(host, RSPR);
+
+ mci_writel(host, IDR, MCI_BIT(CMDRDY));
+ host->cmd = NULL;
+
+ if (mci_stop_sent_is_complete(host)) {
+ host->stop_status = status;
+ mci_set_stop_pending(host);
+ } else {
+ host->cmd_status = status;
+ mci_set_cmd_pending(host);
+ }
+
+ tasklet_schedule(&host->tasklet);
+}
+
+static void atmci_xfer_complete(struct dma_request *_req)
+{
+ struct dma_request_sg *req = to_dma_request_sg(_req);
+ struct atmel_mci_dma *dma;
+ struct atmel_mci *host;
+ struct mmc_data *data;
+
+ dma = container_of(req, struct atmel_mci_dma, req);
+ host = container_of(dma, struct atmel_mci, dma);
+ data = host->data;
+
+ if (data->stop && !mci_set_stop_sent_is_completed(host))
+ send_stop_cmd(host->mmc, data, 0);
+
+ /*
+ * Regardless of what the documentation says, we have to wait
+ * for NOTBUSY even after block read operations.
+ *
+ * When the DMA transfer is complete, the controller may still
+ * be reading the CRC from the card, i.e. the data transfer is
+ * still in progress and we haven't seen all the potential
+ * error bits yet.
+ */
+ mci_writel(host, IER, MCI_BIT(NOTBUSY));
+}
+
+static void atmci_dma_error(struct dma_request *_req)
+{
+ struct dma_request_sg *req = to_dma_request_sg(_req);
+ struct atmel_mci_dma *dma;
+ struct atmel_mci *host;
+
+ dma = container_of(req, struct atmel_mci_dma, req);
+ host = container_of(dma, struct atmel_mci, dma);
+
+ mci_writel(host, IDR, (MCI_BIT(NOTBUSY)
+ | MCI_DATA_ERROR_FLAGS));
+
+ mci_set_dma_error_pending(host);
+ tasklet_schedule(&host->tasklet);
+}
+
+static irqreturn_t atmci_interrupt(int irq, void *dev_id)
+{
+ struct mmc_host *mmc = dev_id;
+ struct atmel_mci *host = mmc_priv(mmc);
+ u32 status, mask, pending;
+
+ spin_lock(&mmc->lock);
+
+ status = mci_readl(host, SR);
+ mask = mci_readl(host, IMR);
+ pending = status & mask;
+
+ do {
+ if (pending & MCI_DATA_ERROR_FLAGS) {
+ mci_writel(host, IDR, (MCI_BIT(NOTBUSY)
+ | MCI_DATA_ERROR_FLAGS));
+ host->data_status = status;
+ mci_set_data_error_pending(host);
+ tasklet_schedule(&host->tasklet);
+ break;
+ }
+ if (pending & MCI_BIT(CMDRDY))
+ atmci_cmd_interrupt(mmc, status);
+ if (pending & MCI_BIT(NOTBUSY)) {
+ mci_writel(host, IDR, (MCI_BIT(NOTBUSY)
+ | MCI_DATA_ERROR_FLAGS));
+ mci_set_data_pending(host);
+ tasklet_schedule(&host->tasklet);
+ }
+
+ status = mci_readl(host, SR);
+ mask = mci_readl(host, IMR);
+ pending = status & mask;
+ } while (pending);
+
+ spin_unlock(&mmc->lock);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t atmci_detect_change(int irq, void *dev_id)
+{
+ struct mmc_host *mmc = dev_id;
+ struct atmel_mci *host = mmc_priv(mmc);
+
+ int present = !gpio_get_value(irq_to_gpio(irq));
+
+ if (present != host->present) {
+ dev_dbg(&mmc->class_dev, "card %s\n",
+ present ? "inserted" : "removed");
+ host->present = present;
+ mci_set_card_detect_pending(host);
+ tasklet_schedule(&host->tasklet);
+ }
+ return IRQ_HANDLED;
+}
+
+static int __devinit atmci_probe(struct platform_device *pdev)
+{
+ struct mci_platform_data *board;
+ struct atmel_mci *host;
+ struct mmc_host *mmc;
+ struct resource *regs;
+ int irq;
+ int ret;
+
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!regs)
+ return -ENXIO;
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
+
+ board = pdev->dev.platform_data;
+
+ mmc = mmc_alloc_host(sizeof(struct atmel_mci), &pdev->dev);
+ if (!mmc)
+ return -ENOMEM;
+
+ host = mmc_priv(mmc);
+ host->pdev = pdev;
+ host->mmc = mmc;
+ if (board) {
+ host->detect_pin = board->detect_pin;
+ host->wp_pin = board->wp_pin;
+ } else {
+ host->detect_pin = -1;
+ host->detect_pin = -1;
+ }
+
+ host->mck = clk_get(&pdev->dev, "mci_clk");
+ if (IS_ERR(host->mck)) {
+ ret = PTR_ERR(host->mck);
+ goto out_free_host;
+ }
+ clk_enable(host->mck);
+
+ ret = -ENOMEM;
+ host->regs = ioremap(regs->start, regs->end - regs->start + 1);
+ if (!host->regs)
+ goto out_disable_clk;
+
+ host->bus_hz = clk_get_rate(host->mck);
+ host->mapbase = regs->start;
+
+ mmc->ops = &atmci_ops;
+ mmc->f_min = (host->bus_hz + 511) / 512;
+ mmc->f_max = min((unsigned int)(host->bus_hz / 2), fmax);
+ mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
+ mmc->caps |= MMC_CAP_4_BIT_DATA;
+
+ tasklet_init(&host->tasklet, atmci_tasklet_func, (unsigned long)mmc);
+
+ ret = request_irq(irq, atmci_interrupt, 0, "mmci", mmc);
+ if (ret)
+ goto out_unmap;
+
+ /* Assume card is present if we don't have a detect pin */
+ host->present = 1;
+ if (host->detect_pin >= 0) {
+ if (gpio_request(host->detect_pin, "mmc_detect")) {
+ dev_dbg(&mmc->class_dev, "no detect pin available\n");
+ host->detect_pin = -1;
+ } else {
+ host->present = !gpio_get_value(host->detect_pin);
+ }
+ }
+ if (host->wp_pin >= 0) {
+ if (gpio_request(host->wp_pin, "mmc_wp")) {
+ dev_dbg(&mmc->class_dev, "no WP pin available\n");
+ host->wp_pin = -1;
+ }
+ }
+
+ /* TODO: Get this information from platform data */
+ ret = -ENOMEM;
+ host->dma.req.req.dmac = find_dma_controller(0);
+ if (!host->dma.req.req.dmac) {
+ dev_dbg(&mmc->class_dev, "no DMA controller available\n");
+ goto out_free_irq;
+ }
+ ret = dma_alloc_channel(host->dma.req.req.dmac);
+ if (ret < 0) {
+ dev_dbg(&mmc->class_dev, "unable to allocate DMA channel\n");
+ goto out_free_irq;
+ }
+ host->dma.req.req.channel = ret;
+ host->dma.req.width = DMA_WIDTH_32BIT;
+ host->dma.req.req.xfer_complete = atmci_xfer_complete;
+ host->dma.req.req.block_complete = NULL; // atmci_block_complete;
+ host->dma.req.req.error = atmci_dma_error;
+ host->dma.rx_periph_id = 0;
+ host->dma.tx_periph_id = 1;
+
+ mci_writel(host, CR, MCI_BIT(SWRST));
+ mci_writel(host, IDR, ~0UL);
+
+ platform_set_drvdata(pdev, host);
+
+ mmc_add_host(mmc);
+
+ if (host->detect_pin >= 0) {
+ ret = request_irq(gpio_to_irq(host->detect_pin),
+ atmci_detect_change,
+ IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
+ DRIVER_NAME, mmc);
+ if (ret) {
+ dev_dbg(&mmc->class_dev,
+ "could not request IRQ %d for detect pin\n",
+ gpio_to_irq(host->detect_pin));
+ gpio_free(host->detect_pin);
+ host->detect_pin = -1;
+ }
+ }
+
+ dev_info(&mmc->class_dev, "Atmel MCI controller at 0x%08lx irq %d\n",
+ host->mapbase, irq);
+
+ atmci_init_debugfs(host);
+
+ return 0;
+
+out_free_irq:
+ if (host->detect_pin >= 0)
+ gpio_free(host->detect_pin);
+ if (host->wp_pin >= 0)
+ gpio_free(host->wp_pin);
+ free_irq(irq, mmc);
+out_unmap:
+ iounmap(host->regs);
+out_disable_clk:
+ clk_disable(host->mck);
+ clk_put(host->mck);
+out_free_host:
+ mmc_free_host(mmc);
+ return ret;
+}
+
+static int __devexit atmci_remove(struct platform_device *pdev)
+{
+ struct atmel_mci *host = platform_get_drvdata(pdev);
+
+ platform_set_drvdata(pdev, NULL);
+
+ if (host) {
+ atmci_cleanup_debugfs(host);
+
+ if (host->detect_pin >= 0) {
+ free_irq(gpio_to_irq(host->detect_pin), host->mmc);
+ cancel_delayed_work(&host->mmc->detect);
+ gpio_free(host->detect_pin);
+ }
+
+ mmc_remove_host(host->mmc);
+
+ mci_writel(host, IDR, ~0UL);
+ mci_writel(host, CR, MCI_BIT(MCIDIS));
+ mci_readl(host, SR);
+
+ dma_release_channel(host->dma.req.req.dmac,
+ host->dma.req.req.channel);
+
+ if (host->wp_pin >= 0)
+ gpio_free(host->wp_pin);
+
+ free_irq(platform_get_irq(pdev, 0), host->mmc);
+ iounmap(host->regs);
+
+ clk_disable(host->mck);
+ clk_put(host->mck);
+
+ mmc_free_host(host->mmc);
+ }
+ return 0;
+}
+
+static struct platform_driver atmci_driver = {
+ .probe = atmci_probe,
+ .remove = __devexit_p(atmci_remove),
+ .driver = {
+ .name = DRIVER_NAME,
+ },
+};
+
+static int __init atmci_init(void)
+{
+ return platform_driver_register(&atmci_driver);
+}
+
+static void __exit atmci_exit(void)
+{
+ platform_driver_unregister(&atmci_driver);
+}
+
+module_init(atmci_init);
+module_exit(atmci_exit);
+
+MODULE_DESCRIPTION("Atmel Multimedia Card Interface driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mmc/host/atmel-mci.h b/drivers/mmc/host/atmel-mci.h
new file mode 100644
index 0000000..60d15c4
--- /dev/null
+++ b/drivers/mmc/host/atmel-mci.h
@@ -0,0 +1,192 @@
+/*
+ * Atmel MultiMedia Card Interface driver
+ *
+ * Copyright (C) 2004-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __DRIVERS_MMC_ATMEL_MCI_H__
+#define __DRIVERS_MMC_ATMEL_MCI_H__
+
+/* MCI register offsets */
+#define MCI_CR 0x0000
+#define MCI_MR 0x0004
+#define MCI_DTOR 0x0008
+#define MCI_SDCR 0x000c
+#define MCI_ARGR 0x0010
+#define MCI_CMDR 0x0014
+#define MCI_BLKR 0x0018
+#define MCI_RSPR 0x0020
+#define MCI_RSPR1 0x0024
+#define MCI_RSPR2 0x0028
+#define MCI_RSPR3 0x002c
+#define MCI_RDR 0x0030
+#define MCI_TDR 0x0034
+#define MCI_SR 0x0040
+#define MCI_IER 0x0044
+#define MCI_IDR 0x0048
+#define MCI_IMR 0x004c
+
+/* Bitfields in CR */
+#define MCI_MCIEN_OFFSET 0
+#define MCI_MCIEN_SIZE 1
+#define MCI_MCIDIS_OFFSET 1
+#define MCI_MCIDIS_SIZE 1
+#define MCI_PWSEN_OFFSET 2
+#define MCI_PWSEN_SIZE 1
+#define MCI_PWSDIS_OFFSET 3
+#define MCI_PWSDIS_SIZE 1
+#define MCI_SWRST_OFFSET 7
+#define MCI_SWRST_SIZE 1
+
+/* Bitfields in MR */
+#define MCI_CLKDIV_OFFSET 0
+#define MCI_CLKDIV_SIZE 8
+#define MCI_PWSDIV_OFFSET 8
+#define MCI_PWSDIV_SIZE 3
+#define MCI_RDPROOF_OFFSET 11
+#define MCI_RDPROOF_SIZE 1
+#define MCI_WRPROOF_OFFSET 12
+#define MCI_WRPROOF_SIZE 1
+#define MCI_DMAPADV_OFFSET 14
+#define MCI_DMAPADV_SIZE 1
+#define MCI_BLKLEN_OFFSET 16
+#define MCI_BLKLEN_SIZE 16
+
+/* Bitfields in DTOR */
+#define MCI_DTOCYC_OFFSET 0
+#define MCI_DTOCYC_SIZE 4
+#define MCI_DTOMUL_OFFSET 4
+#define MCI_DTOMUL_SIZE 3
+
+/* Bitfields in SDCR */
+#define MCI_SDCSEL_OFFSET 0
+#define MCI_SDCSEL_SIZE 4
+#define MCI_SDCBUS_OFFSET 7
+#define MCI_SDCBUS_SIZE 1
+
+/* Bitfields in ARGR */
+#define MCI_ARG_OFFSET 0
+#define MCI_ARG_SIZE 32
+
+/* Bitfields in CMDR */
+#define MCI_CMDNB_OFFSET 0
+#define MCI_CMDNB_SIZE 6
+#define MCI_RSPTYP_OFFSET 6
+#define MCI_RSPTYP_SIZE 2
+#define MCI_SPCMD_OFFSET 8
+#define MCI_SPCMD_SIZE 3
+#define MCI_OPDCMD_OFFSET 11
+#define MCI_OPDCMD_SIZE 1
+#define MCI_MAXLAT_OFFSET 12
+#define MCI_MAXLAT_SIZE 1
+#define MCI_TRCMD_OFFSET 16
+#define MCI_TRCMD_SIZE 2
+#define MCI_TRDIR_OFFSET 18
+#define MCI_TRDIR_SIZE 1
+#define MCI_TRTYP_OFFSET 19
+#define MCI_TRTYP_SIZE 2
+
+/* Bitfields in BLKR */
+#define MCI_BCNT_OFFSET 0
+#define MCI_BCNT_SIZE 16
+
+/* Bitfields in RSPRn */
+#define MCI_RSP_OFFSET 0
+#define MCI_RSP_SIZE 32
+
+/* Bitfields in SR/IER/IDR/IMR */
+#define MCI_CMDRDY_OFFSET 0
+#define MCI_CMDRDY_SIZE 1
+#define MCI_RXRDY_OFFSET 1
+#define MCI_RXRDY_SIZE 1
+#define MCI_TXRDY_OFFSET 2
+#define MCI_TXRDY_SIZE 1
+#define MCI_BLKE_OFFSET 3
+#define MCI_BLKE_SIZE 1
+#define MCI_DTIP_OFFSET 4
+#define MCI_DTIP_SIZE 1
+#define MCI_NOTBUSY_OFFSET 5
+#define MCI_NOTBUSY_SIZE 1
+#define MCI_ENDRX_OFFSET 6
+#define MCI_ENDRX_SIZE 1
+#define MCI_ENDTX_OFFSET 7
+#define MCI_ENDTX_SIZE 1
+#define MCI_RXBUFF_OFFSET 14
+#define MCI_RXBUFF_SIZE 1
+#define MCI_TXBUFE_OFFSET 15
+#define MCI_TXBUFE_SIZE 1
+#define MCI_RINDE_OFFSET 16
+#define MCI_RINDE_SIZE 1
+#define MCI_RDIRE_OFFSET 17
+#define MCI_RDIRE_SIZE 1
+#define MCI_RCRCE_OFFSET 18
+#define MCI_RCRCE_SIZE 1
+#define MCI_RENDE_OFFSET 19
+#define MCI_RENDE_SIZE 1
+#define MCI_RTOE_OFFSET 20
+#define MCI_RTOE_SIZE 1
+#define MCI_DCRCE_OFFSET 21
+#define MCI_DCRCE_SIZE 1
+#define MCI_DTOE_OFFSET 22
+#define MCI_DTOE_SIZE 1
+#define MCI_OVRE_OFFSET 30
+#define MCI_OVRE_SIZE 1
+#define MCI_UNRE_OFFSET 31
+#define MCI_UNRE_SIZE 1
+
+/* Constants for DTOMUL */
+#define MCI_DTOMUL_1_CYCLE 0
+#define MCI_DTOMUL_16_CYCLES 1
+#define MCI_DTOMUL_128_CYCLES 2
+#define MCI_DTOMUL_256_CYCLES 3
+#define MCI_DTOMUL_1024_CYCLES 4
+#define MCI_DTOMUL_4096_CYCLES 5
+#define MCI_DTOMUL_65536_CYCLES 6
+#define MCI_DTOMUL_1048576_CYCLES 7
+
+/* Constants for RSPTYP */
+#define MCI_RSPTYP_NO_RESP 0
+#define MCI_RSPTYP_48_BIT 1
+#define MCI_RSPTYP_136_BIT 2
+
+/* Constants for SPCMD */
+#define MCI_SPCMD_NO_SPEC_CMD 0
+#define MCI_SPCMD_INIT_CMD 1
+#define MCI_SPCMD_SYNC_CMD 2
+#define MCI_SPCMD_INT_CMD 4
+#define MCI_SPCMD_INT_RESP 5
+
+/* Constants for TRCMD */
+#define MCI_TRCMD_NO_TRANS 0
+#define MCI_TRCMD_START_TRANS 1
+#define MCI_TRCMD_STOP_TRANS 2
+
+/* Constants for TRTYP */
+#define MCI_TRTYP_BLOCK 0
+#define MCI_TRTYP_MULTI_BLOCK 1
+#define MCI_TRTYP_STREAM 2
+
+/* Bit manipulation macros */
+#define MCI_BIT(name) \
+ (1 << MCI_##name##_OFFSET)
+#define MCI_BF(name,value) \
+ (((value) & ((1 << MCI_##name##_SIZE) - 1)) \
+ << MCI_##name##_OFFSET)
+#define MCI_BFEXT(name,value) \
+ (((value) >> MCI_##name##_OFFSET) \
+ & ((1 << MCI_##name##_SIZE) - 1))
+#define MCI_BFINS(name,value,old) \
+ (((old) & ~(((1 << MCI_##name##_SIZE) - 1) \
+ << MCI_##name##_OFFSET)) \
+ | MCI_BF(name,value))
+
+/* Register access macros */
+#define mci_readl(port,reg) \
+ __raw_readl((port)->regs + MCI_##reg)
+#define mci_writel(port,reg,value) \
+ __raw_writel((value), (port)->regs + MCI_##reg)
+
+#endif /* __DRIVERS_MMC_ATMEL_MCI_H__ */
diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index 2f19fa7..94304ca 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -50,6 +50,7 @@
#define I82802AC 0x00ac
#define MANUFACTURER_ST 0x0020
#define M50LPW080 0x002F
+#define AT49BV640D 0x02de
static int cfi_intelext_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
static int cfi_intelext_write_words(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
@@ -156,6 +157,47 @@ static void cfi_tell_features(struct cfi_pri_intelext *extp)
}
#endif
+/* Atmel chips don't use the same PRI format as Intel chips */
+static void fixup_convert_atmel_pri(struct mtd_info *mtd, void *param)
+{
+ struct map_info *map = mtd->priv;
+ struct cfi_private *cfi = map->fldrv_priv;
+ struct cfi_pri_intelext *extp = cfi->cmdset_priv;
+ struct cfi_pri_atmel atmel_pri;
+ uint32_t features = 0;
+
+ /* Reverse byteswapping */
+ extp->FeatureSupport = cpu_to_le32(extp->FeatureSupport);
+ extp->BlkStatusRegMask = cpu_to_le16(extp->BlkStatusRegMask);
+ extp->ProtRegAddr = cpu_to_le16(extp->ProtRegAddr);
+
+ memcpy(&atmel_pri, extp, sizeof(atmel_pri));
+ memset((char *)extp + 5, 0, sizeof(*extp) - 5);
+
+ printk(KERN_ERR "atmel Features: %02x\n", atmel_pri.Features);
+
+ if (atmel_pri.Features & 0x01) /* chip erase supported */
+ features |= (1<<0);
+ if (atmel_pri.Features & 0x02) /* erase suspend supported */
+ features |= (1<<1);
+ if (atmel_pri.Features & 0x04) /* program suspend supported */
+ features |= (1<<2);
+ if (atmel_pri.Features & 0x08) /* simultaneous operations supported */
+ features |= (1<<9);
+ if (atmel_pri.Features & 0x20) /* page mode read supported */
+ features |= (1<<7);
+ if (atmel_pri.Features & 0x40) /* queued erase supported */
+ features |= (1<<4);
+ if (atmel_pri.Features & 0x80) /* Protection bits supported */
+ features |= (1<<6);
+
+ extp->FeatureSupport = features;
+
+ /* burst write mode not supported */
+ cfi->cfiq->BufWriteTimeoutTyp = 0;
+ cfi->cfiq->BufWriteTimeoutMax = 0;
+}
+
#ifdef CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE
/* Some Intel Strata Flash prior to FPO revision C has bugs in this area */
static void fixup_intel_strataflash(struct mtd_info *mtd, void* param)
@@ -233,6 +275,7 @@ static void fixup_use_powerup_lock(struct mtd_info *mtd, void *param)
}
static struct cfi_fixup cfi_fixup_table[] = {
+ { CFI_MFR_ATMEL, CFI_ID_ANY, fixup_convert_atmel_pri, NULL },
#ifdef CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE
{ CFI_MFR_ANY, CFI_ID_ANY, fixup_intel_strataflash, NULL },
#endif
diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
index 1f64458..205977b 100644
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -185,6 +185,10 @@ static void fixup_convert_atmel_pri(struct mtd_info *mtd, void *param)
extp->TopBottom = 2;
else
extp->TopBottom = 3;
+
+ /* burst write mode not supported */
+ cfi->cfiq->BufWriteTimeoutTyp = 0;
+ cfi->cfiq->BufWriteTimeoutMax = 0;
}
static void fixup_use_secsi(struct mtd_info *mtd, void *param)
@@ -217,6 +221,7 @@ static void fixup_use_atmel_lock(struct mtd_info *mtd, void *param)
}
static struct cfi_fixup cfi_fixup_table[] = {
+ { CFI_MFR_ATMEL, CFI_ID_ANY, fixup_convert_atmel_pri, NULL },
#ifdef AMD_BOOTLOC_BUG
{ CFI_MFR_AMD, CFI_ID_ANY, fixup_amd_bootblock, NULL },
#endif
@@ -229,7 +234,6 @@ static struct cfi_fixup cfi_fixup_table[] = {
#if !FORCE_WORD_WRITE
{ CFI_MFR_ANY, CFI_ID_ANY, fixup_use_write_buffers, NULL, },
#endif
- { CFI_MFR_ATMEL, CFI_ID_ANY, fixup_convert_atmel_pri, NULL },
{ 0, 0, NULL, NULL }
};
static struct cfi_fixup jedec_fixup_table[] = {
diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c
index b046974..bc90604 100644
--- a/drivers/spi/atmel_spi.c
+++ b/drivers/spi/atmel_spi.c
@@ -491,8 +491,8 @@ static int atmel_spi_setup(struct spi_device *spi)
csr |= SPI_BIT(NCPHA);
/* TODO: DLYBS and DLYBCT */
- csr |= SPI_BF(DLYBS, 10);
- csr |= SPI_BF(DLYBCT, 10);
+ csr |= SPI_BF(DLYBS, 0);
+ csr |= SPI_BF(DLYBCT, 0);
/* chipselect must have been muxed as GPIO (e.g. in board setup) */
npcs_pin = (unsigned int)spi->controller_data;
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 767aed5..f81d08d 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -67,6 +67,17 @@ config USB_GADGET_DEBUG_FILES
driver on a new board. Enable these files by choosing "Y"
here. If in doubt, or to conserve kernel memory, say "N".
+config USB_GADGET_DEBUG_FS
+ boolean "Debugging information files in debugfs"
+ depends on USB_GADGET && DEBUG_FS
+ help
+ Some of the drivers in the "gadget" framework can expose
+ debugging information in files under /sys/kernel/debug/.
+ The information in these files may help when you're
+ troubleshooting or bringing up a driver on a new board.
+ Enable these files by choosing "Y" here. If in doubt, or
+ to conserve kernel memory, say "N".
+
config USB_GADGET_SELECTED
boolean
@@ -103,6 +114,20 @@ config USB_AMD5536UDC
default USB_GADGET
select USB_GADGET_SELECTED
+config USB_GADGET_ATMEL_USBA
+ boolean "Atmel USBA"
+ select USB_GADGET_DUALSPEED
+ depends on AVR32
+ help
+ USBA is the integrated high-speed USB Device controller on
+ the AT32AP700x processors from Atmel.
+
+config USB_ATMEL_USBA
+ tristate
+ depends on USB_GADGET_ATMEL_USBA
+ default USB_GADGET
+ select USB_GADGET_SELECTED
+
config USB_GADGET_FSL_USB2
boolean "Freescale Highspeed USB DR Peripheral Controller"
depends on MPC834x || PPC_MPC831x
@@ -228,7 +253,6 @@ config USB_LH7A40X
default USB_GADGET
select USB_GADGET_SELECTED
-
config USB_GADGET_OMAP
boolean "OMAP USB Device Controller"
depends on ARCH_OMAP
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index 1bc0f03..904e57b 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_USB_OMAP) += omap_udc.o
obj-$(CONFIG_USB_LH7A40X) += lh7a40x_udc.o
obj-$(CONFIG_USB_S3C2410) += s3c2410_udc.o
obj-$(CONFIG_USB_AT91) += at91_udc.o
+obj-$(CONFIG_USB_ATMEL_USBA) += atmel_usba_udc.o
obj-$(CONFIG_USB_FSL_USB2) += fsl_usb2_udc.o
obj-$(CONFIG_USB_M66592) += m66592-udc.o
diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c
new file mode 100644
index 0000000..e35362d
--- /dev/null
+++ b/drivers/usb/gadget/atmel_usba_udc.c
@@ -0,0 +1,2038 @@
+/*
+ * Driver for the Atmel USBA high speed USB device controller
+ *
+ * Copyright (C) 2005-2007 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/clk.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/list.h>
+#include <linux/platform_device.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb_gadget.h>
+#include <linux/delay.h>
+
+#include <asm/gpio.h>
+#include <asm/arch/board.h>
+
+#include "atmel_usba_udc.h"
+
+
+static struct usba_udc the_udc;
+
+#ifdef CONFIG_USB_GADGET_DEBUG_FS
+#include <linux/debugfs.h>
+#include <linux/uaccess.h>
+
+static int queue_dbg_open(struct inode *inode, struct file *file)
+{
+ struct usba_ep *ep = inode->i_private;
+ struct usba_request *req, *req_copy;
+ struct list_head *queue_data;
+
+ queue_data = kmalloc(sizeof(*queue_data), GFP_KERNEL);
+ if (!queue_data)
+ return -ENOMEM;
+ INIT_LIST_HEAD(queue_data);
+
+ spin_lock_irq(&ep->udc->lock);
+ list_for_each_entry(req, &ep->queue, queue) {
+ req_copy = kmalloc(sizeof(*req_copy), GFP_ATOMIC);
+ if (!req_copy)
+ goto fail;
+ memcpy(req_copy, req, sizeof(*req_copy));
+ list_add_tail(&req_copy->queue, queue_data);
+ }
+ spin_unlock_irq(&ep->udc->lock);
+
+ file->private_data = queue_data;
+ return 0;
+
+fail:
+ spin_unlock_irq(&ep->udc->lock);
+ list_for_each_entry_safe(req, req_copy, queue_data, queue) {
+ list_del(&req->queue);
+ kfree(req);
+ }
+ kfree(queue_data);
+ return -ENOMEM;
+}
+
+/*
+ * bbbbbbbb llllllll IZS sssss nnnn FDL\n\0
+ *
+ * b: buffer address
+ * l: buffer length
+ * I/i: interrupt/no interrupt
+ * Z/z: zero/no zero
+ * S/s: short ok/short not ok
+ * s: status
+ * n: nr_packets
+ * F/f: submitted/not submitted to FIFO
+ * D/d: using/not using DMA
+ * L/l: last transaction/not last transaction
+ */
+static ssize_t queue_dbg_read(struct file *file, char __user *buf,
+ size_t nbytes, loff_t *ppos)
+{
+ struct list_head *queue = file->private_data;
+ struct usba_request *req, *tmp_req;
+ size_t len, remaining, actual = 0;
+ char tmpbuf[38];
+
+ if (!access_ok(VERIFY_WRITE, buf, nbytes))
+ return -EFAULT;
+
+ mutex_lock(&file->f_dentry->d_inode->i_mutex);
+ list_for_each_entry_safe(req, tmp_req, queue, queue) {
+ len = snprintf(tmpbuf, sizeof(tmpbuf),
+ "%8p %08x %c%c%c %5d %c%c%c\n",
+ req->req.buf, req->req.length,
+ req->req.no_interrupt ? 'i' : 'I',
+ req->req.zero ? 'Z' : 'z',
+ req->req.short_not_ok ? 's' : 'S',
+ req->req.status,
+ req->submitted ? 'F' : 'f',
+ req->using_dma ? 'D' : 'd',
+ req->last_transaction ? 'L' : 'l');
+ len = min(len, sizeof(tmpbuf));
+ if (len > nbytes)
+ break;
+
+ list_del(&req->queue);
+ kfree(req);
+
+ remaining = __copy_to_user(buf, tmpbuf, len);
+ actual += len - remaining;
+ if (remaining)
+ break;
+
+ nbytes -= len;
+ buf += len;
+ }
+ mutex_unlock(&file->f_dentry->d_inode->i_mutex);
+
+ return actual;
+}
+
+static int queue_dbg_release(struct inode *inode, struct file *file)
+{
+ struct list_head *queue_data = file->private_data;
+ struct usba_request *req, *tmp_req;
+
+ list_for_each_entry_safe(req, tmp_req, queue_data, queue) {
+ list_del(&req->queue);
+ kfree(req);
+ }
+ kfree(queue_data);
+ return 0;
+}
+
+static int regs_dbg_open(struct inode *inode, struct file *file)
+{
+ struct usba_udc *udc;
+ unsigned int i;
+ u32 *data;
+ int ret = -ENOMEM;
+
+ mutex_lock(&inode->i_mutex);
+ udc = inode->i_private;
+ data = kmalloc(inode->i_size, GFP_KERNEL);
+ if (!data)
+ goto out;
+
+ spin_lock_irq(&udc->lock);
+ for (i = 0; i < inode->i_size / 4; i++)
+ data[i] = __raw_readl(udc->regs + i * 4);
+ spin_unlock_irq(&udc->lock);
+
+ file->private_data = data;
+ ret = 0;
+
+out:
+ mutex_unlock(&inode->i_mutex);
+
+ return ret;
+}
+
+static ssize_t regs_dbg_read(struct file *file, char __user *buf,
+ size_t nbytes, loff_t *ppos)
+{
+ struct inode *inode = file->f_dentry->d_inode;
+ int ret;
+
+ mutex_lock(&inode->i_mutex);
+ ret = simple_read_from_buffer(buf, nbytes, ppos,
+ file->private_data,
+ file->f_dentry->d_inode->i_size);
+ mutex_unlock(&inode->i_mutex);
+
+ return ret;
+}
+
+static int regs_dbg_release(struct inode *inode, struct file *file)
+{
+ kfree(file->private_data);
+ return 0;
+}
+
+const struct file_operations queue_dbg_fops = {
+ .owner = THIS_MODULE,
+ .open = queue_dbg_open,
+ .llseek = no_llseek,
+ .read = queue_dbg_read,
+ .release = queue_dbg_release,
+};
+
+const struct file_operations regs_dbg_fops = {
+ .owner = THIS_MODULE,
+ .open = regs_dbg_open,
+ .llseek = generic_file_llseek,
+ .read = regs_dbg_read,
+ .release = regs_dbg_release,
+};
+
+static void usba_ep_init_debugfs(struct usba_udc *udc,
+ struct usba_ep *ep)
+{
+ struct dentry *ep_root;
+
+ ep_root = debugfs_create_dir(ep->ep.name, udc->debugfs_root);
+ if (!ep_root)
+ goto err_root;
+ ep->debugfs_dir = ep_root;
+
+ ep->debugfs_queue = debugfs_create_file("queue", 0400, ep_root,
+ ep, &queue_dbg_fops);
+ if (!ep->debugfs_queue)
+ goto err_queue;
+
+ if (ep->can_dma) {
+ ep->debugfs_dma_status
+ = debugfs_create_u32("dma_status", 0400, ep_root,
+ &ep->last_dma_status);
+ if (!ep->debugfs_dma_status)
+ goto err_dma_status;
+ }
+ if (ep_is_control(ep)) {
+ ep->debugfs_state
+ = debugfs_create_u32("state", 0400, ep_root,
+ &ep->state);
+ if (!ep->debugfs_state)
+ goto err_state;
+ }
+
+ return;
+
+err_state:
+ if (ep->can_dma)
+ debugfs_remove(ep->debugfs_dma_status);
+err_dma_status:
+ debugfs_remove(ep->debugfs_queue);
+err_queue:
+ debugfs_remove(ep_root);
+err_root:
+ dev_err(&ep->udc->pdev->dev,
+ "failed to create debugfs directory for %s\n", ep->ep.name);
+}
+
+static void usba_ep_cleanup_debugfs(struct usba_ep *ep)
+{
+ debugfs_remove(ep->debugfs_queue);
+ debugfs_remove(ep->debugfs_dma_status);
+ debugfs_remove(ep->debugfs_state);
+ debugfs_remove(ep->debugfs_dir);
+ ep->debugfs_dma_status = NULL;
+ ep->debugfs_dir = NULL;
+}
+
+static void usba_init_debugfs(struct usba_udc *udc)
+{
+ struct dentry *root, *regs;
+ struct resource *regs_resource;
+
+ root = debugfs_create_dir(udc->gadget.name, NULL);
+ if (IS_ERR(root) || !root)
+ goto err_root;
+ udc->debugfs_root = root;
+
+ regs = debugfs_create_file("regs", 0400, root, udc, &regs_dbg_fops);
+ if (!regs)
+ goto err_regs;
+
+ regs_resource = platform_get_resource(udc->pdev, IORESOURCE_MEM,
+ CTRL_IOMEM_ID);
+ regs->d_inode->i_size = regs_resource->end - regs_resource->start + 1;
+ udc->debugfs_regs = regs;
+
+ usba_ep_init_debugfs(udc, to_usba_ep(udc->gadget.ep0));
+
+ return;
+
+err_regs:
+ debugfs_remove(root);
+err_root:
+ udc->debugfs_root = NULL;
+ dev_err(&udc->pdev->dev, "debugfs is not available\n");
+}
+
+static void usba_cleanup_debugfs(struct usba_udc *udc)
+{
+ usba_ep_cleanup_debugfs(to_usba_ep(udc->gadget.ep0));
+ debugfs_remove(udc->debugfs_regs);
+ debugfs_remove(udc->debugfs_root);
+ udc->debugfs_regs = NULL;
+ udc->debugfs_root = NULL;
+}
+#else
+static inline void usba_ep_init_debugfs(struct usba_udc *udc,
+ struct usba_ep *ep)
+{
+
+}
+
+static inline void usba_ep_cleanup_debugfs(struct usba_ep *ep)
+{
+
+}
+
+static inline void usba_init_debugfs(struct usba_udc *udc)
+{
+
+}
+
+static inline void usba_cleanup_debugfs(struct usba_udc *udc)
+{
+
+}
+#endif
+
+static int vbus_is_present(struct usba_udc *udc)
+{
+ if (udc->vbus_pin != -1)
+ return gpio_get_value(udc->vbus_pin);
+
+ /* No Vbus detection: Assume always present */
+ return 1;
+}
+
+static void copy_to_fifo(void __iomem *fifo, const void *buf, int len)
+{
+ unsigned long tmp;
+
+ DBG(DBG_FIFO, "copy to FIFO (len %d):\n", len);
+ for (; len > 0; len -= 4, buf += 4, fifo += 4) {
+ tmp = *(unsigned long *)buf;
+ if (len >= 4) {
+ DBG(DBG_FIFO, " -> %08lx\n", tmp);
+ __raw_writel(tmp, fifo);
+ } else {
+ do {
+ DBG(DBG_FIFO, " -> %02lx\n", tmp >> 24);
+ __raw_writeb(tmp >> 24, fifo);
+ fifo++;
+ tmp <<= 8;
+ } while (--len);
+ break;
+ }
+ }
+}
+
+static void copy_from_fifo(void *buf, void __iomem *fifo, int len)
+{
+ union {
+ unsigned long *w;
+ unsigned char *b;
+ } p;
+ unsigned long tmp;
+
+ DBG(DBG_FIFO, "copy from FIFO (len %d):\n", len);
+ for (p.w = buf; len > 0; len -= 4, p.w++, fifo += 4) {
+ if (len >= 4) {
+ tmp = __raw_readl(fifo);
+ *p.w = tmp;
+ DBG(DBG_FIFO, " -> %08lx\n", tmp);
+ } else {
+ do {
+ tmp = __raw_readb(fifo);
+ *p.b = tmp;
+ DBG(DBG_FIFO, " -> %02lx\n", tmp);
+ fifo++, p.b++;
+ } while (--len);
+ }
+ }
+}
+
+static void next_fifo_transaction(struct usba_ep *ep, struct usba_request *req)
+{
+ unsigned int transaction_len;
+
+ transaction_len = req->req.length - req->req.actual;
+ req->last_transaction = 1;
+ if (transaction_len > ep->ep.maxpacket) {
+ transaction_len = ep->ep.maxpacket;
+ req->last_transaction = 0;
+ } else if (transaction_len == ep->ep.maxpacket && req->req.zero)
+ req->last_transaction = 0;
+
+ DBG(DBG_QUEUE, "%s: submit_transaction, req %p (length %d)%s\n",
+ ep->ep.name, req, transaction_len,
+ req->last_transaction ? ", done" : "");
+
+ copy_to_fifo(ep->fifo, req->req.buf + req->req.actual, transaction_len);
+ usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY);
+ req->req.actual += transaction_len;
+}
+
+static void submit_request(struct usba_ep *ep, struct usba_request *req)
+{
+ DBG(DBG_QUEUE, "%s: submit_request: req %p (length %d)\n",
+ ep->ep.name, req, req->req.length);
+
+ req->req.actual = 0;
+ req->submitted = 1;
+
+ if (req->using_dma) {
+ if (req->req.length == 0) {
+ usba_ep_writel(ep, CTL_ENB, USBA_TX_PK_RDY);
+ return;
+ }
+
+ if (req->req.zero)
+ usba_ep_writel(ep, CTL_ENB, USBA_SHORT_PACKET);
+ else
+ usba_ep_writel(ep, CTL_DIS, USBA_SHORT_PACKET);
+
+ usba_dma_writel(ep, ADDRESS, req->req.dma);
+ usba_dma_writel(ep, CONTROL, req->ctrl);
+ } else {
+ next_fifo_transaction(ep, req);
+ if (req->last_transaction) {
+ usba_ep_writel(ep, CTL_DIS, USBA_TX_PK_RDY);
+ usba_ep_writel(ep, CTL_ENB, USBA_TX_COMPLETE);
+ } else {
+ usba_ep_writel(ep, CTL_DIS, USBA_TX_COMPLETE);
+ usba_ep_writel(ep, CTL_ENB, USBA_TX_PK_RDY);
+ }
+ }
+}
+
+static void submit_next_request(struct usba_ep *ep)
+{
+ struct usba_request *req;
+
+ if (list_empty(&ep->queue)) {
+ usba_ep_writel(ep, CTL_DIS, USBA_TX_PK_RDY | USBA_RX_BK_RDY);
+ return;
+ }
+
+ req = list_entry(ep->queue.next, struct usba_request, queue);
+ if (!req->submitted)
+ submit_request(ep, req);
+}
+
+static void send_status(struct usba_udc *udc, struct usba_ep *ep)
+{
+ ep->state = STATUS_STAGE_IN;
+ usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY);
+ usba_ep_writel(ep, CTL_ENB, USBA_TX_COMPLETE);
+}
+
+static void receive_data(struct usba_ep *ep)
+{
+ struct usba_udc *udc = ep->udc;
+ struct usba_request *req;
+ unsigned long status;
+ unsigned int bytecount, nr_busy;
+ int is_complete = 0;
+
+ status = usba_ep_readl(ep, STA);
+ nr_busy = USBA_BFEXT(BUSY_BANKS, status);
+
+ DBG(DBG_QUEUE, "receive data: nr_busy=%u\n", nr_busy);
+
+ while (nr_busy > 0) {
+ if (list_empty(&ep->queue)) {
+ usba_ep_writel(ep, CTL_DIS, USBA_RX_BK_RDY);
+ break;
+ }
+ req = list_entry(ep->queue.next,
+ struct usba_request, queue);
+
+ bytecount = USBA_BFEXT(BYTE_COUNT, status);
+
+ if (status & (1 << 31))
+ is_complete = 1;
+ if (req->req.actual + bytecount >= req->req.length) {
+ is_complete = 1;
+ bytecount = req->req.length - req->req.actual;
+ }
+
+ copy_from_fifo(req->req.buf + req->req.actual,
+ ep->fifo, bytecount);
+ req->req.actual += bytecount;
+
+ usba_ep_writel(ep, CLR_STA, USBA_RX_BK_RDY);
+
+ if (is_complete) {
+ DBG(DBG_QUEUE, "%s: request done\n", ep->ep.name);
+ req->req.status = 0;
+ list_del_init(&req->queue);
+ usba_ep_writel(ep, CTL_DIS, USBA_RX_BK_RDY);
+ spin_unlock(&udc->lock);
+ req->req.complete(&ep->ep, &req->req);
+ spin_lock(&udc->lock);
+ }
+
+ status = usba_ep_readl(ep, STA);
+ nr_busy = USBA_BFEXT(BUSY_BANKS, status);
+
+ if (is_complete && ep_is_control(ep)) {
+ send_status(udc, ep);
+ break;
+ }
+ }
+}
+
+static void
+request_complete(struct usba_ep *ep, struct usba_request *req, int status)
+{
+ struct usba_udc *udc = ep->udc;
+
+ WARN_ON(!list_empty(&req->queue));
+
+ if (req->req.status == -EINPROGRESS)
+ req->req.status = status;
+
+ if (req->mapped) {
+ dma_unmap_single(
+ &udc->pdev->dev, req->req.dma, req->req.length,
+ ep->is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+ req->req.dma = DMA_ADDR_INVALID;
+ req->mapped = 0;
+ }
+
+ DBG(DBG_GADGET | DBG_REQ,
+ "%s: req %p complete: status %d, actual %u\n",
+ ep->ep.name, req, req->req.status, req->req.actual);
+
+ spin_unlock(&udc->lock);
+ req->req.complete(&ep->ep, &req->req);
+ spin_lock(&udc->lock);
+}
+
+static void
+request_complete_list(struct usba_ep *ep, struct list_head *list, int status)
+{
+ struct usba_request *req, *tmp_req;
+
+ list_for_each_entry_safe(req, tmp_req, list, queue) {
+ list_del_init(&req->queue);
+ request_complete(ep, req, status);
+ }
+}
+
+static int
+usba_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
+{
+ struct usba_ep *ep = to_usba_ep(_ep);
+ struct usba_udc *udc = ep->udc;
+ unsigned long flags, ept_cfg, maxpacket;
+ unsigned int nr_trans;
+
+ DBG(DBG_GADGET, "%s: ep_enable: desc=%p\n", ep->ep.name, desc);
+
+ maxpacket = le16_to_cpu(desc->wMaxPacketSize) & 0x7ff;
+
+ if (((desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK) != ep->index)
+ || ep->index == 0
+ || desc->bDescriptorType != USB_DT_ENDPOINT
+ || maxpacket == 0
+ || maxpacket > ep->fifo_size) {
+ DBG(DBG_ERR, "ep_enable: Invalid argument");
+ return -EINVAL;
+ }
+
+ ep->is_isoc = 0;
+ ep->is_in = 0;
+
+ if (maxpacket <= 8)
+ ept_cfg = USBA_BF(EPT_SIZE, USBA_EPT_SIZE_8);
+ else
+ /* LSB is bit 1, not 0 */
+ ept_cfg = USBA_BF(EPT_SIZE, fls(maxpacket - 1) - 3);
+
+ DBG(DBG_HW, "%s: EPT_SIZE = %lu (maxpacket = %lu)\n",
+ ep->ep.name, ept_cfg, maxpacket);
+
+ if ((desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) {
+ ep->is_in = 1;
+ ept_cfg |= USBA_EPT_DIR_IN;
+ }
+
+ switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
+ case USB_ENDPOINT_XFER_CONTROL:
+ ept_cfg |= USBA_BF(EPT_TYPE, USBA_EPT_TYPE_CONTROL);
+ ept_cfg |= USBA_BF(BK_NUMBER, USBA_BK_NUMBER_ONE);
+ break;
+ case USB_ENDPOINT_XFER_ISOC:
+ if (!ep->can_isoc) {
+ DBG(DBG_ERR, "ep_enable: %s is not isoc capable\n",
+ ep->ep.name);
+ return -EINVAL;
+ }
+
+ /*
+ * Bits 11:12 specify number of _additional_
+ * transactions per microframe.
+ */
+ nr_trans = ((le16_to_cpu(desc->wMaxPacketSize) >> 11) & 3) + 1;
+ if (nr_trans > 3)
+ return -EINVAL;
+
+ ep->is_isoc = 1;
+ ept_cfg |= USBA_BF(EPT_TYPE, USBA_EPT_TYPE_ISO);
+
+ /*
+ * Do triple-buffering on high-bandwidth iso endpoints.
+ */
+ if (nr_trans > 1 && ep->nr_banks == 3)
+ ept_cfg |= USBA_BF(BK_NUMBER, USBA_BK_NUMBER_TRIPLE);
+ else
+ ept_cfg |= USBA_BF(BK_NUMBER, USBA_BK_NUMBER_DOUBLE);
+ ept_cfg |= USBA_BF(NB_TRANS, nr_trans);
+ break;
+ case USB_ENDPOINT_XFER_BULK:
+ ept_cfg |= USBA_BF(EPT_TYPE, USBA_EPT_TYPE_BULK);
+ ept_cfg |= USBA_BF(BK_NUMBER, USBA_BK_NUMBER_DOUBLE);
+ break;
+ case USB_ENDPOINT_XFER_INT:
+ ept_cfg |= USBA_BF(EPT_TYPE, USBA_EPT_TYPE_INT);
+ ept_cfg |= USBA_BF(BK_NUMBER, USBA_BK_NUMBER_DOUBLE);
+ break;
+ }
+
+ spin_lock_irqsave(&ep->udc->lock, flags);
+
+ if (ep->desc) {
+ spin_unlock_irqrestore(&ep->udc->lock, flags);
+ DBG(DBG_ERR, "ep%d already enabled\n", ep->index);
+ return -EBUSY;
+ }
+
+ ep->desc = desc;
+ ep->ep.maxpacket = maxpacket;
+
+ usba_ep_writel(ep, CFG, ept_cfg);
+ usba_ep_writel(ep, CTL_ENB, USBA_EPT_ENABLE);
+
+ if (ep->can_dma) {
+ u32 ctrl;
+
+ usba_writel(udc, INT_ENB,
+ (usba_readl(udc, INT_ENB)
+ | USBA_BF(EPT_INT, 1 << ep->index)
+ | USBA_BF(DMA_INT, 1 << ep->index)));
+ ctrl = USBA_AUTO_VALID | USBA_INTDIS_DMA;
+ usba_ep_writel(ep, CTL_ENB, ctrl);
+ } else {
+ usba_writel(udc, INT_ENB,
+ (usba_readl(udc, INT_ENB)
+ | USBA_BF(EPT_INT, 1 << ep->index)));
+ }
+
+ spin_unlock_irqrestore(&udc->lock, flags);
+
+ DBG(DBG_HW, "EPT_CFG%d after init: %#08lx\n", ep->index,
+ (unsigned long)usba_ep_readl(ep, CFG));
+ DBG(DBG_HW, "INT_ENB after init: %#08lx\n",
+ (unsigned long)usba_readl(udc, INT_ENB));
+
+ return 0;
+}
+
+static int usba_ep_disable(struct usb_ep *_ep)
+{
+ struct usba_ep *ep = to_usba_ep(_ep);
+ struct usba_udc *udc = ep->udc;
+ LIST_HEAD(req_list);
+ unsigned long flags;
+
+ DBG(DBG_GADGET, "ep_disable: %s\n", ep->ep.name);
+
+ spin_lock_irqsave(&udc->lock, flags);
+
+ if (!ep->desc) {
+ spin_unlock_irqrestore(&udc->lock, flags);
+ DBG(DBG_ERR, "ep_disable: %s not enabled\n", ep->ep.name);
+ return -EINVAL;
+ }
+ ep->desc = NULL;
+
+ list_splice_init(&ep->queue, &req_list);
+ if (ep->can_dma) {
+ usba_dma_writel(ep, CONTROL, 0);
+ usba_dma_writel(ep, ADDRESS, 0);
+ usba_dma_readl(ep, STATUS);
+ }
+ usba_ep_writel(ep, CTL_DIS, USBA_EPT_ENABLE);
+ usba_writel(udc, INT_ENB,
+ usba_readl(udc, INT_ENB)
+ & ~USBA_BF(EPT_INT, 1 << ep->index));
+
+ request_complete_list(ep, &req_list, -ESHUTDOWN);
+
+ spin_unlock_irqrestore(&udc->lock, flags);
+
+ return 0;
+}
+
+static struct usb_request *
+usba_ep_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
+{
+ struct usba_request *req;
+
+ DBG(DBG_GADGET, "ep_alloc_request: %p, 0x%x\n", _ep, gfp_flags);
+
+ req = kzalloc(sizeof(*req), gfp_flags);
+ if (!req)
+ return NULL;
+
+ INIT_LIST_HEAD(&req->queue);
+ req->req.dma = DMA_ADDR_INVALID;
+
+ return &req->req;
+}
+
+static void
+usba_ep_free_request(struct usb_ep *_ep, struct usb_request *_req)
+{
+ struct usba_request *req = to_usba_req(_req);
+
+ DBG(DBG_GADGET, "ep_free_request: %p, %p\n", _ep, _req);
+
+ kfree(req);
+}
+
+static int queue_dma(struct usba_udc *udc, struct usba_ep *ep,
+ struct usba_request *req, gfp_t gfp_flags)
+{
+ unsigned long flags;
+ int ret;
+
+ DBG(DBG_DMA, "%s: req l/%u d/%08x %c%c%c\n",
+ ep->ep.name, req->req.length, req->req.dma,
+ req->req.zero ? 'Z' : 'z',
+ req->req.short_not_ok ? 'S' : 's',
+ req->req.no_interrupt ? 'I' : 'i');
+
+ if (req->req.length > 0x10000) {
+ /* Lengths from 0 to 65536 (inclusive) are supported */
+ DBG(DBG_ERR, "invalid request length %u\n", req->req.length);
+ return -EINVAL;
+ }
+
+ req->using_dma = 1;
+
+ if (req->req.dma == DMA_ADDR_INVALID) {
+ req->req.dma = dma_map_single(
+ &udc->pdev->dev, req->req.buf, req->req.length,
+ ep->is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+ req->mapped = 1;
+ } else {
+ dma_sync_single_for_device(
+ &udc->pdev->dev, req->req.dma, req->req.length,
+ ep->is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+ req->mapped = 0;
+ }
+
+ req->ctrl = USBA_BF(DMA_BUF_LEN, req->req.length)
+ | USBA_DMA_CH_EN | USBA_DMA_END_BUF_IE
+ | USBA_DMA_END_TR_EN | USBA_DMA_END_TR_IE;
+
+ if (ep->is_in)
+ req->ctrl |= USBA_DMA_END_BUF_EN;
+
+ /*
+ * Add this request to the queue and submit for DMA if
+ * possible. Check if we're still alive first -- we may have
+ * received a reset since last time we checked.
+ */
+ ret = -ESHUTDOWN;
+ spin_lock_irqsave(&udc->lock, flags);
+ if (ep->desc) {
+ if (list_empty(&ep->queue))
+ submit_request(ep, req);
+
+ list_add_tail(&req->queue, &ep->queue);
+ ret = 0;
+ }
+ spin_unlock_irqrestore(&udc->lock, flags);
+
+ return ret;
+}
+
+static int
+usba_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
+{
+ struct usba_request *req = to_usba_req(_req);
+ struct usba_ep *ep = to_usba_ep(_ep);
+ struct usba_udc *udc = ep->udc;
+ unsigned long flags;
+ int ret;
+
+ DBG(DBG_GADGET | DBG_QUEUE | DBG_REQ, "%s: queue req %p, len %u\n",
+ ep->ep.name, req, _req->length);
+
+ if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN || !ep->desc)
+ return -ESHUTDOWN;
+
+ req->submitted = 0;
+ req->using_dma = 0;
+ req->last_transaction = 0;
+
+ _req->status = -EINPROGRESS;
+ _req->actual = 0;
+
+ if (ep->can_dma)
+ return queue_dma(udc, ep, req, gfp_flags);
+
+ /* May have received a reset since last time we checked */
+ ret = -ESHUTDOWN;
+ spin_lock_irqsave(&udc->lock, flags);
+ if (ep->desc) {
+ list_add_tail(&req->queue, &ep->queue);
+
+ if (ep->is_in || (ep_is_control(ep)
+ && (ep->state == DATA_STAGE_IN
+ || ep->state == STATUS_STAGE_IN)))
+ usba_ep_writel(ep, CTL_ENB, USBA_TX_PK_RDY);
+ else
+ usba_ep_writel(ep, CTL_ENB, USBA_RX_BK_RDY);
+ ret = 0;
+ }
+ spin_unlock_irqrestore(&udc->lock, flags);
+
+ return ret;
+}
+
+static void
+usba_update_req(struct usba_ep *ep, struct usba_request *req, u32 status)
+{
+ req->req.actual = req->req.length - USBA_BFEXT(DMA_BUF_LEN, status);
+}
+
+static int stop_dma(struct usba_ep *ep, u32 *pstatus)
+{
+ unsigned int timeout;
+ u32 status;
+
+ /*
+ * Stop the DMA controller. When writing both CH_EN
+ * and LINK to 0, the other bits are not affected.
+ */
+ usba_dma_writel(ep, CONTROL, 0);
+
+ /* Wait for the FIFO to empty */
+ for (timeout = 40; timeout; --timeout) {
+ status = usba_dma_readl(ep, STATUS);
+ if (!(status & USBA_DMA_CH_EN))
+ break;
+ udelay(1);
+ }
+
+ if (pstatus)
+ *pstatus = status;
+
+ if (timeout == 0) {
+ dev_err(&ep->udc->pdev->dev,
+ "%s: timed out waiting for DMA FIFO to empty\n",
+ ep->ep.name);
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+static int usba_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
+{
+ struct usba_ep *ep = to_usba_ep(_ep);
+ struct usba_udc *udc = ep->udc;
+ struct usba_request *req = to_usba_req(_req);
+ unsigned long flags;
+ u32 status;
+
+ DBG(DBG_GADGET | DBG_QUEUE, "ep_dequeue: %s, req %p\n",
+ ep->ep.name, req);
+
+ spin_lock_irqsave(&udc->lock, flags);
+
+ if (req->using_dma) {
+ /*
+ * If this request is currently being transferred,
+ * stop the DMA controller and reset the FIFO.
+ */
+ if (ep->queue.next == &req->queue) {
+ status = usba_dma_readl(ep, STATUS);
+ if (status & USBA_DMA_CH_EN)
+ stop_dma(ep, &status);
+
+#ifdef CONFIG_USB_GADGET_DEBUG_FS
+ ep->last_dma_status = status;
+#endif
+
+ usba_writel(udc, EPT_RST, 1 << ep->index);
+
+ usba_update_req(ep, req, status);
+ }
+ }
+
+ /*
+ * Errors should stop the queue from advancing until the
+ * completion function returns.
+ */
+ list_del_init(&req->queue);
+
+ request_complete(ep, req, -ECONNRESET);
+
+ /* Process the next request if any */
+ submit_next_request(ep);
+ spin_unlock_irqrestore(&udc->lock, flags);
+
+ return 0;
+}
+
+static int usba_ep_set_halt(struct usb_ep *_ep, int value)
+{
+ struct usba_ep *ep = to_usba_ep(_ep);
+ struct usba_udc *udc = ep->udc;
+ unsigned long flags;
+ int ret = 0;
+
+ DBG(DBG_GADGET, "endpoint %s: %s HALT\n", ep->ep.name,
+ value ? "set" : "clear");
+
+ if (!ep->desc) {
+ DBG(DBG_ERR, "Attempted to halt uninitialized ep %s\n",
+ ep->ep.name);
+ return -ENODEV;
+ }
+ if (ep->is_isoc) {
+ DBG(DBG_ERR, "Attempted to halt isochronous ep %s\n",
+ ep->ep.name);
+ return -ENOTTY;
+ }
+
+ spin_lock_irqsave(&udc->lock, flags);
+
+ /*
+ * We can't halt IN endpoints while there are still data to be
+ * transferred
+ */
+ if (!list_empty(&ep->queue)
+ || ((value && ep->is_in && (usba_ep_readl(ep, STA)
+ & USBA_BF(BUSY_BANKS, -1L))))) {
+ ret = -EAGAIN;
+ } else {
+ if (value)
+ usba_ep_writel(ep, SET_STA, USBA_FORCE_STALL);
+ else
+ usba_ep_writel(ep, CLR_STA,
+ USBA_FORCE_STALL | USBA_TOGGLE_CLR);
+ usba_ep_readl(ep, STA);
+ }
+
+ spin_unlock_irqrestore(&udc->lock, flags);
+
+ return ret;
+}
+
+static int usba_ep_fifo_status(struct usb_ep *_ep)
+{
+ struct usba_ep *ep = to_usba_ep(_ep);
+
+ return USBA_BFEXT(BYTE_COUNT, usba_ep_readl(ep, STA));
+}
+
+static void usba_ep_fifo_flush(struct usb_ep *_ep)
+{
+ struct usba_ep *ep = to_usba_ep(_ep);
+ struct usba_udc *udc = ep->udc;
+
+ usba_writel(udc, EPT_RST, 1 << ep->index);
+}
+
+static const struct usb_ep_ops usba_ep_ops = {
+ .enable = usba_ep_enable,
+ .disable = usba_ep_disable,
+ .alloc_request = usba_ep_alloc_request,
+ .free_request = usba_ep_free_request,
+ .queue = usba_ep_queue,
+ .dequeue = usba_ep_dequeue,
+ .set_halt = usba_ep_set_halt,
+ .fifo_status = usba_ep_fifo_status,
+ .fifo_flush = usba_ep_fifo_flush,
+};
+
+static int usba_udc_get_frame(struct usb_gadget *gadget)
+{
+ struct usba_udc *udc = to_usba_udc(gadget);
+
+ return USBA_BFEXT(FRAME_NUMBER, usba_readl(udc, FNUM));
+}
+
+static const struct usb_gadget_ops usba_udc_ops = {
+ .get_frame = usba_udc_get_frame,
+};
+
+#define EP(nam, idx, maxpkt, maxbk, dma, isoc) \
+{ \
+ .ep = { \
+ .ops = &usba_ep_ops, \
+ .name = nam, \
+ .maxpacket = maxpkt, \
+ }, \
+ .udc = &the_udc, \
+ .queue = LIST_HEAD_INIT(usba_ep[idx].queue), \
+ .fifo_size = maxpkt, \
+ .nr_banks = maxbk, \
+ .index = idx, \
+ .can_dma = dma, \
+ .can_isoc = isoc, \
+}
+
+static struct usba_ep usba_ep[] = {
+ EP("ep0", 0, 64, 1, 0, 0),
+ EP("ep1in-bulk", 1, 512, 2, 1, 1),
+ EP("ep2out-bulk", 2, 512, 2, 1, 1),
+ EP("ep3in-int", 3, 64, 3, 1, 0),
+ EP("ep4out-int", 4, 64, 3, 1, 0),
+ EP("ep5in-iso", 5, 1024, 3, 1, 1),
+ EP("ep6out-iso", 6, 1024, 3, 1, 1),
+};
+#undef EP
+
+static struct usb_endpoint_descriptor usba_ep0_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = 0,
+ .bmAttributes = USB_ENDPOINT_XFER_CONTROL,
+ .wMaxPacketSize = __constant_cpu_to_le16(64),
+ /* FIXME: I have no idea what to put here */
+ .bInterval = 1,
+};
+
+static void nop_release(struct device *dev)
+{
+
+}
+
+static struct usba_udc the_udc = {
+ .gadget = {
+ .ops = &usba_udc_ops,
+ .ep0 = &usba_ep[0].ep,
+ .ep_list = LIST_HEAD_INIT(the_udc.gadget.ep_list),
+ .is_dualspeed = 1,
+ .name = "atmel_usba_udc",
+ .dev = {
+ .bus_id = "gadget",
+ .release = nop_release,
+ },
+ },
+
+ .lock = SPIN_LOCK_UNLOCKED,
+};
+
+/*
+ * Called with interrupts disabled and udc->lock held.
+ */
+static void reset_all_endpoints(struct usba_udc *udc)
+{
+ struct usba_ep *ep;
+ struct usba_request *req, *tmp_req;
+
+ usba_writel(udc, EPT_RST, ~0UL);
+
+ ep = to_usba_ep(udc->gadget.ep0);
+ list_for_each_entry_safe(req, tmp_req, &ep->queue, queue) {
+ list_del_init(&req->queue);
+ request_complete(ep, req, -ECONNRESET);
+ }
+
+ list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) {
+ if (ep->desc)
+ usba_ep_disable(&ep->ep);
+ }
+}
+
+static struct usba_ep *get_ep_by_addr(struct usba_udc *udc, u16 wIndex)
+{
+ struct usba_ep *ep;
+
+ if ((wIndex & USB_ENDPOINT_NUMBER_MASK) == 0)
+ return to_usba_ep(udc->gadget.ep0);
+
+ list_for_each_entry (ep, &udc->gadget.ep_list, ep.ep_list) {
+ u8 bEndpointAddress;
+
+ if (!ep->desc)
+ continue;
+ bEndpointAddress = ep->desc->bEndpointAddress;
+ if ((wIndex ^ bEndpointAddress) & USB_DIR_IN)
+ continue;
+ if ((bEndpointAddress & USB_ENDPOINT_NUMBER_MASK)
+ == (wIndex & USB_ENDPOINT_NUMBER_MASK))
+ return ep;
+ }
+
+ return NULL;
+}
+
+/* Called with interrupts disabled and udc->lock held */
+static inline void set_protocol_stall(struct usba_udc *udc, struct usba_ep *ep)
+{
+ usba_ep_writel(ep, SET_STA, USBA_FORCE_STALL);
+ ep->state = WAIT_FOR_SETUP;
+}
+
+static inline int is_stalled(struct usba_udc *udc, struct usba_ep *ep)
+{
+ if (usba_ep_readl(ep, STA) & USBA_FORCE_STALL)
+ return 1;
+ return 0;
+}
+
+static inline void set_address(struct usba_udc *udc, unsigned int addr)
+{
+ u32 regval;
+
+ DBG(DBG_BUS, "setting address %u...\n", addr);
+ regval = usba_readl(udc, CTRL);
+ regval = USBA_BFINS(DEV_ADDR, addr, regval);
+ usba_writel(udc, CTRL, regval);
+}
+
+static int do_test_mode(struct usba_udc *udc)
+{
+ static const char test_packet_buffer[] = {
+ /* JKJKJKJK * 9 */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ /* JJKKJJKK * 8 */
+ 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
+ /* JJKKJJKK * 8 */
+ 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE,
+ /* JJJJJJJKKKKKKK * 8 */
+ 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ /* JJJJJJJK * 8 */
+ 0x7F, 0xBF, 0xDF, 0xEF, 0xF7, 0xFB, 0xFD,
+ /* {JKKKKKKK * 10}, JK */
+ 0xFC, 0x7E, 0xBF, 0xDF, 0xEF, 0xF7, 0xFB, 0xFD, 0x7E
+ };
+ struct usba_ep *ep;
+ struct device *dev = &udc->pdev->dev;
+ int test_mode;
+
+ test_mode = udc->test_mode;
+
+ /* Start from a clean slate */
+ reset_all_endpoints(udc);
+
+ switch (test_mode) {
+ case 0x0100:
+ /* Test_J */
+ usba_writel(udc, TST, USBA_TST_J_MODE);
+ dev_info(dev, "Entering Test_J mode...\n");
+ break;
+ case 0x0200:
+ /* Test_K */
+ usba_writel(udc, TST, USBA_TST_K_MODE);
+ dev_info(dev, "Entering Test_K mode...\n");
+ break;
+ case 0x0300:
+ /*
+ * Test_SE0_NAK: Force high-speed mode and set up ep0
+ * for Bulk IN transfers
+ */
+ ep = &usba_ep[0];
+ usba_writel(udc, TST,
+ USBA_BF(SPEED_CFG, USBA_SPEED_CFG_FORCE_HIGH));
+ usba_ep_writel(ep, CFG,
+ USBA_BF(EPT_SIZE, USBA_EPT_SIZE_64)
+ | USBA_EPT_DIR_IN
+ | USBA_BF(EPT_TYPE, USBA_EPT_TYPE_BULK)
+ | USBA_BF(BK_NUMBER, 1));
+ if (!(usba_ep_readl(ep, CFG) & USBA_EPT_MAPPED)) {
+ set_protocol_stall(udc, ep);
+ dev_err(dev, "Test_SE0_NAK: ep0 not mapped\n");
+ } else {
+ usba_ep_writel(ep, CTL_ENB, USBA_EPT_ENABLE);
+ dev_info(dev, "Entering Test_SE0_NAK mode...\n");
+ }
+ break;
+ case 0x0400:
+ /* Test_Packet */
+ ep = &usba_ep[0];
+ usba_ep_writel(ep, CFG,
+ USBA_BF(EPT_SIZE, USBA_EPT_SIZE_64)
+ | USBA_EPT_DIR_IN
+ | USBA_BF(EPT_TYPE, USBA_EPT_TYPE_BULK)
+ | USBA_BF(BK_NUMBER, 1));
+ if (!(usba_ep_readl(ep, CFG) & USBA_EPT_MAPPED)) {
+ set_protocol_stall(udc, ep);
+ dev_err(dev, "Test_Packet: ep0 not mapped\n");
+ } else {
+ usba_ep_writel(ep, CTL_ENB, USBA_EPT_ENABLE);
+ usba_writel(udc, TST, USBA_TST_PKT_MODE);
+ copy_to_fifo(ep->fifo, test_packet_buffer,
+ sizeof(test_packet_buffer));
+ usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY);
+ dev_info(dev, "Entering Test_Packet mode...\n");
+ }
+ break;
+ default:
+ dev_err(dev, "Invalid test mode: 0x%04x\n", test_mode);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* Avoid overly long expressions */
+static inline bool feature_is_dev_remote_wakeup(struct usb_ctrlrequest *crq)
+{
+ if (crq->wValue == __constant_cpu_to_le16(USB_DEVICE_REMOTE_WAKEUP))
+ return true;
+ return false;
+}
+
+static inline bool feature_is_dev_test_mode(struct usb_ctrlrequest *crq)
+{
+ if (crq->wValue == __constant_cpu_to_le16(USB_DEVICE_TEST_MODE))
+ return true;
+ return false;
+}
+
+static inline bool feature_is_ep_halt(struct usb_ctrlrequest *crq)
+{
+ if (crq->wValue == __constant_cpu_to_le16(USB_ENDPOINT_HALT))
+ return true;
+ return false;
+}
+
+static int handle_ep0_setup(struct usba_udc *udc, struct usba_ep *ep,
+ struct usb_ctrlrequest *crq)
+{
+ int retval = 0;;
+
+ switch (crq->bRequest) {
+ case USB_REQ_GET_STATUS: {
+ u16 status;
+
+ if (crq->bRequestType == (USB_DIR_IN | USB_RECIP_DEVICE)) {
+ /* Self-powered, no remote wakeup */
+ status = __constant_cpu_to_le16(1 << 0);
+ } else if (crq->bRequestType
+ == (USB_DIR_IN | USB_RECIP_INTERFACE)) {
+ status = __constant_cpu_to_le16(0);
+ } else if (crq->bRequestType
+ == (USB_DIR_IN | USB_RECIP_ENDPOINT)) {
+ struct usba_ep *target;
+
+ target = get_ep_by_addr(udc, le16_to_cpu(crq->wIndex));
+ if (!target)
+ goto stall;
+
+ status = 0;
+ if (is_stalled(udc, target))
+ status |= __constant_cpu_to_le16(1);
+ } else
+ goto delegate;
+
+ /* Write directly to the FIFO. No queueing is done. */
+ if (crq->wLength != __constant_cpu_to_le16(sizeof(status)))
+ goto stall;
+ ep->state = DATA_STAGE_IN;
+ __raw_writew(status, ep->fifo);
+ usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY);
+ break;
+ }
+
+ case USB_REQ_CLEAR_FEATURE: {
+ if (crq->bRequestType == USB_RECIP_DEVICE) {
+ if (feature_is_dev_remote_wakeup(crq)) {
+ /* TODO: Handle REMOTE_WAKEUP */
+ } else {
+ /* Can't CLEAR_FEATURE TEST_MODE */
+ goto stall;
+ }
+ } else if (crq->bRequestType == USB_RECIP_ENDPOINT) {
+ struct usba_ep *target;
+
+ if (crq->wLength != __constant_cpu_to_le16(0)
+ || !feature_is_ep_halt(crq))
+ goto stall;
+ target = get_ep_by_addr(udc, le16_to_cpu(crq->wIndex));
+ if (!target)
+ goto stall;
+
+ usba_ep_writel(target, CLR_STA, USBA_FORCE_STALL);
+ if (target->index != 0)
+ usba_ep_writel(target, CLR_STA,
+ USBA_TOGGLE_CLR);
+ } else {
+ goto delegate;
+ }
+
+ send_status(udc, ep);
+ break;
+ }
+
+ case USB_REQ_SET_FEATURE: {
+ if (crq->bRequestType == USB_RECIP_DEVICE) {
+ if (feature_is_dev_test_mode(crq)) {
+ send_status(udc, ep);
+ ep->state = STATUS_STAGE_TEST;
+ udc->test_mode = le16_to_cpu(crq->wIndex);
+ return 0;
+ } else if (feature_is_dev_remote_wakeup(crq)) {
+ /* TODO: Handle REMOTE_WAKEUP */
+ } else {
+ goto stall;
+ }
+ } else if (crq->bRequestType == USB_RECIP_ENDPOINT) {
+ struct usba_ep *target;
+
+ if (crq->wLength != __constant_cpu_to_le16(0)
+ || !feature_is_ep_halt(crq))
+ goto stall;
+
+ target = get_ep_by_addr(udc, le16_to_cpu(crq->wIndex));
+ if (!target)
+ goto stall;
+
+ usba_ep_writel(target, SET_STA, USBA_FORCE_STALL);
+ } else
+ goto delegate;
+
+ send_status(udc, ep);
+ break;
+ }
+
+ case USB_REQ_SET_ADDRESS:
+ if (crq->bRequestType != (USB_DIR_OUT | USB_RECIP_DEVICE))
+ goto delegate;
+
+ set_address(udc, le16_to_cpu(crq->wValue));
+ send_status(udc, ep);
+ ep->state = STATUS_STAGE_ADDR;
+ break;
+
+ default:
+delegate:
+ spin_unlock(&udc->lock);
+ retval = udc->driver->setup(&udc->gadget, crq);
+ spin_lock(&udc->lock);
+ }
+
+ return retval;
+
+stall:
+ printk(KERN_ERR
+ "udc: %s: Invalid setup request: %02x.%02x v%04x i%04x l%d, "
+ "halting endpoint...\n",
+ ep->ep.name, crq->bRequestType, crq->bRequest,
+ le16_to_cpu(crq->wValue), le16_to_cpu(crq->wIndex),
+ le16_to_cpu(crq->wLength));
+ set_protocol_stall(udc, ep);
+ return -1;
+}
+
+static void usba_control_irq(struct usba_udc *udc, struct usba_ep *ep)
+{
+ struct usba_request *req;
+ u32 epstatus;
+ u32 epctrl;
+
+restart:
+ epstatus = usba_ep_readl(ep, STA);
+ epctrl = usba_ep_readl(ep, CTL);
+
+ DBG(DBG_INT, "%s [%d]: s/%08x c/%08x\n",
+ ep->ep.name, ep->state, epstatus, epctrl);
+
+ req = NULL;
+ if (!list_empty(&ep->queue))
+ req = list_entry(ep->queue.next,
+ struct usba_request, queue);
+
+ if ((epctrl & USBA_TX_PK_RDY) && !(epstatus & USBA_TX_PK_RDY)) {
+ if (req->submitted)
+ next_fifo_transaction(ep, req);
+ else
+ submit_request(ep, req);
+
+ if (req->last_transaction) {
+ usba_ep_writel(ep, CTL_DIS, USBA_TX_PK_RDY);
+ usba_ep_writel(ep, CTL_ENB, USBA_TX_COMPLETE);
+ }
+ goto restart;
+ }
+ if ((epstatus & epctrl) & USBA_TX_COMPLETE) {
+ usba_ep_writel(ep, CLR_STA, USBA_TX_COMPLETE);
+
+ switch (ep->state) {
+ case DATA_STAGE_IN:
+ usba_ep_writel(ep, CTL_ENB, USBA_RX_BK_RDY);
+ usba_ep_writel(ep, CTL_DIS, USBA_TX_COMPLETE);
+ ep->state = STATUS_STAGE_OUT;
+ break;
+ case STATUS_STAGE_ADDR:
+ /* Activate our new address */
+ usba_writel(udc, CTRL, (usba_readl(udc, CTRL)
+ | USBA_FADDR_EN));
+ usba_ep_writel(ep, CTL_DIS, USBA_TX_COMPLETE);
+ ep->state = WAIT_FOR_SETUP;
+ break;
+ case STATUS_STAGE_IN:
+ if (req) {
+ list_del_init(&req->queue);
+ request_complete(ep, req, 0);
+ submit_next_request(ep);
+ }
+ usba_ep_writel(ep, CTL_DIS, USBA_TX_COMPLETE);
+ ep->state = WAIT_FOR_SETUP;
+ break;
+ case STATUS_STAGE_TEST:
+ usba_ep_writel(ep, CTL_DIS, USBA_TX_COMPLETE);
+ ep->state = WAIT_FOR_SETUP;
+ if (do_test_mode(udc))
+ set_protocol_stall(udc, ep);
+ break;
+ default:
+ printk(KERN_ERR
+ "udc: %s: TXCOMP: Invalid endpoint state %d, "
+ "halting endpoint...\n",
+ ep->ep.name, ep->state);
+ set_protocol_stall(udc, ep);
+ break;
+ }
+
+ goto restart;
+ }
+ if ((epstatus & epctrl) & USBA_RX_BK_RDY) {
+ switch (ep->state) {
+ case STATUS_STAGE_OUT:
+ usba_ep_writel(ep, CLR_STA, USBA_RX_BK_RDY);
+ usba_ep_writel(ep, CTL_DIS, USBA_RX_BK_RDY);
+
+ if (req) {
+ list_del_init(&req->queue);
+ request_complete(ep, req, 0);
+ }
+ ep->state = WAIT_FOR_SETUP;
+ break;
+
+ case DATA_STAGE_OUT:
+ receive_data(ep);
+ break;
+
+ default:
+ usba_ep_writel(ep, CLR_STA, USBA_RX_BK_RDY);
+ usba_ep_writel(ep, CTL_DIS, USBA_RX_BK_RDY);
+ printk(KERN_ERR
+ "udc: %s: RXRDY: Invalid endpoint state %d, "
+ "halting endpoint...\n",
+ ep->ep.name, ep->state);
+ set_protocol_stall(udc, ep);
+ break;
+ }
+
+ goto restart;
+ }
+ if (epstatus & USBA_RX_SETUP) {
+ union {
+ struct usb_ctrlrequest crq;
+ unsigned long data[2];
+ } crq;
+ unsigned int pkt_len;
+ int ret;
+
+ if (ep->state != WAIT_FOR_SETUP) {
+ /*
+ * Didn't expect a SETUP packet at this
+ * point. Clean up any pending requests (which
+ * may be successful).
+ */
+ int status = -EPROTO;
+
+ /*
+ * RXRDY and TXCOMP are dropped when SETUP
+ * packets arrive. Just pretend we received
+ * the status packet.
+ */
+ if (ep->state == STATUS_STAGE_OUT
+ || ep->state == STATUS_STAGE_IN) {
+ usba_ep_writel(ep, CTL_DIS, USBA_RX_BK_RDY);
+ status = 0;
+ }
+
+ if (req) {
+ list_del_init(&req->queue);
+ request_complete(ep, req, status);
+ }
+ }
+
+ pkt_len = USBA_BFEXT(BYTE_COUNT, usba_ep_readl(ep, STA));
+ DBG(DBG_HW, "Packet length: %u\n", pkt_len);
+ if (pkt_len != sizeof(crq)) {
+ printk(KERN_WARNING "udc: Invalid packet length %u "
+ "(expected %lu)\n", pkt_len, sizeof(crq));
+ set_protocol_stall(udc, ep);
+ return;
+ }
+
+ DBG(DBG_FIFO, "Copying ctrl request from 0x%p:\n", ep->fifo);
+ copy_from_fifo(crq.data, ep->fifo, sizeof(crq));
+
+ /* Free up one bank in the FIFO so that we can
+ * generate or receive a reply right away. */
+ usba_ep_writel(ep, CLR_STA, USBA_RX_SETUP);
+
+ /* printk(KERN_DEBUG "setup: %d: %02x.%02x\n",
+ ep->state, crq.crq.bRequestType,
+ crq.crq.bRequest); */
+
+ if (crq.crq.bRequestType & USB_DIR_IN) {
+ /*
+ * The USB 2.0 spec states that "if wLength is
+ * zero, there is no data transfer phase."
+ * However, testusb #14 seems to actually
+ * expect a data phase even if wLength = 0...
+ */
+ ep->state = DATA_STAGE_IN;
+ } else {
+ if (crq.crq.wLength != __constant_cpu_to_le16(0))
+ ep->state = DATA_STAGE_OUT;
+ else
+ ep->state = STATUS_STAGE_IN;
+ }
+
+ ret = -1;
+ if (ep->index == 0)
+ ret = handle_ep0_setup(udc, ep, &crq.crq);
+ else {
+ spin_unlock(&udc->lock);
+ ret = udc->driver->setup(&udc->gadget, &crq.crq);
+ spin_lock(&udc->lock);
+ }
+
+ DBG(DBG_BUS, "req %02x.%02x, length %d, state %d, ret %d\n",
+ crq.crq.bRequestType, crq.crq.bRequest,
+ le16_to_cpu(crq.crq.wLength), ep->state, ret);
+
+ if (ret < 0) {
+ /* Let the host know that we failed */
+ set_protocol_stall(udc, ep);
+ }
+ }
+}
+
+static void usba_ep_irq(struct usba_udc *udc, struct usba_ep *ep)
+{
+ struct usba_request *req;
+ u32 epstatus;
+ u32 epctrl;
+
+ epstatus = usba_ep_readl(ep, STA);
+ epctrl = usba_ep_readl(ep, CTL);
+
+ DBG(DBG_INT, "%s: interrupt, status: 0x%08x\n", ep->ep.name, epstatus);
+
+ while ((epctrl & USBA_TX_PK_RDY) && !(epstatus & USBA_TX_PK_RDY)) {
+ DBG(DBG_BUS, "%s: TX PK ready\n", ep->ep.name);
+
+ if (list_empty(&ep->queue)) {
+ dev_warn(&udc->pdev->dev, "ep_irq: queue empty\n");
+ usba_ep_writel(ep, CTL_DIS, USBA_TX_PK_RDY);
+ return;
+ }
+
+ req = list_entry(ep->queue.next, struct usba_request, queue);
+
+ if (req->using_dma) {
+ /* Send a zero-length packet */
+ usba_ep_writel(ep, SET_STA,
+ USBA_TX_PK_RDY);
+ usba_ep_writel(ep, CTL_DIS,
+ USBA_TX_PK_RDY);
+ list_del_init(&req->queue);
+ submit_next_request(ep);
+ request_complete(ep, req, 0);
+ } else {
+ if (req->submitted)
+ next_fifo_transaction(ep, req);
+ else
+ submit_request(ep, req);
+
+ if (req->last_transaction) {
+ list_del_init(&req->queue);
+ submit_next_request(ep);
+ request_complete(ep, req, 0);
+ }
+ }
+
+ epstatus = usba_ep_readl(ep, STA);
+ epctrl = usba_ep_readl(ep, CTL);
+ }
+ if ((epstatus & epctrl) & USBA_RX_BK_RDY) {
+ DBG(DBG_BUS, "%s: RX data ready\n", ep->ep.name);
+ receive_data(ep);
+ usba_ep_writel(ep, CLR_STA, USBA_RX_BK_RDY);
+ }
+}
+
+static void usba_dma_irq(struct usba_udc *udc, struct usba_ep *ep)
+{
+ struct usba_request *req;
+ u32 status, control, pending;
+
+ status = usba_dma_readl(ep, STATUS);
+ control = usba_dma_readl(ep, CONTROL);
+#ifdef CONFIG_USB_GADGET_DEBUG_FS
+ ep->last_dma_status = status;
+#endif
+ pending = status & control;
+ DBG(DBG_INT | DBG_DMA, "dma irq, s/%#08x, c/%#08x\n", status, control);
+
+ if (status & USBA_DMA_CH_EN) {
+ dev_err(&udc->pdev->dev,
+ "DMA_CH_EN is set after transfer is finished!\n");
+ dev_err(&udc->pdev->dev,
+ "status=%#08x, pending=%#08x, control=%#08x\n",
+ status, pending, control);
+
+ /*
+ * try to pretend nothing happened. We might have to
+ * do something here...
+ */
+ }
+
+ if (list_empty(&ep->queue))
+ /* Might happen if a reset comes along at the right moment */
+ return;
+
+ if (pending & (USBA_DMA_END_TR_ST | USBA_DMA_END_BUF_ST)) {
+ req = list_entry(ep->queue.next, struct usba_request, queue);
+ usba_update_req(ep, req, status);
+
+ list_del_init(&req->queue);
+ submit_next_request(ep);
+ request_complete(ep, req, 0);
+ }
+}
+
+static irqreturn_t usba_udc_irq(int irq, void *devid)
+{
+ struct usba_udc *udc = devid;
+ u32 status;
+ u32 dma_status;
+ u32 ep_status;
+
+ spin_lock(&udc->lock);
+
+ status = usba_readl(udc, INT_STA);
+ DBG(DBG_INT, "irq, status=%#08x\n", status);
+
+ if (status & USBA_DET_SUSPEND) {
+ usba_writel(udc, INT_CLR, USBA_DET_SUSPEND);
+ DBG(DBG_BUS, "Suspend detected\n");
+ if (udc->gadget.speed != USB_SPEED_UNKNOWN
+ && udc->driver && udc->driver->suspend) {
+ spin_unlock(&udc->lock);
+ udc->driver->suspend(&udc->gadget);
+ spin_lock(&udc->lock);
+ }
+ }
+
+ if (status & USBA_WAKE_UP) {
+ usba_writel(udc, INT_CLR, USBA_WAKE_UP);
+ DBG(DBG_BUS, "Wake Up CPU detected\n");
+ }
+
+ if (status & USBA_END_OF_RESUME) {
+ usba_writel(udc, INT_CLR, USBA_END_OF_RESUME);
+ DBG(DBG_BUS, "Resume detected\n");
+ if (udc->gadget.speed != USB_SPEED_UNKNOWN
+ && udc->driver && udc->driver->resume) {
+ spin_unlock(&udc->lock);
+ udc->driver->resume(&udc->gadget);
+ spin_lock(&udc->lock);
+ }
+ }
+
+ dma_status = USBA_BFEXT(DMA_INT, status);
+ if (dma_status) {
+ int i;
+
+ for (i = 1; i < USBA_NR_ENDPOINTS; i++)
+ if (dma_status & (1 << i))
+ usba_dma_irq(udc, &usba_ep[i]);
+ }
+
+ ep_status = USBA_BFEXT(EPT_INT, status);
+ if (ep_status) {
+ int i;
+
+ for (i = 0; i < USBA_NR_ENDPOINTS; i++)
+ if (ep_status & (1 << i)) {
+ if (ep_is_control(&usba_ep[i]))
+ usba_control_irq(udc, &usba_ep[i]);
+ else
+ usba_ep_irq(udc, &usba_ep[i]);
+ }
+ }
+
+ if (status & USBA_END_OF_RESET) {
+ struct usba_ep *ep0;
+
+ usba_writel(udc, INT_CLR, USBA_END_OF_RESET);
+ reset_all_endpoints(udc);
+
+ if (status & USBA_HIGH_SPEED) {
+ DBG(DBG_BUS, "High-speed bus reset detected\n");
+ udc->gadget.speed = USB_SPEED_HIGH;
+ } else {
+ DBG(DBG_BUS, "Full-speed bus reset detected\n");
+ udc->gadget.speed = USB_SPEED_FULL;
+ }
+
+ ep0 = &usba_ep[0];
+ ep0->desc = &usba_ep0_desc;
+ ep0->state = WAIT_FOR_SETUP;
+ usba_ep_writel(ep0, CFG,
+ (USBA_BF(EPT_SIZE, EP0_EPT_SIZE)
+ | USBA_BF(EPT_TYPE, USBA_EPT_TYPE_CONTROL)
+ | USBA_BF(BK_NUMBER, USBA_BK_NUMBER_ONE)));
+ usba_ep_writel(ep0, CTL_ENB,
+ USBA_EPT_ENABLE | USBA_RX_SETUP);
+ usba_writel(udc, INT_ENB,
+ (usba_readl(udc, INT_ENB)
+ | USBA_BF(EPT_INT, 1)
+ | USBA_DET_SUSPEND
+ | USBA_END_OF_RESUME));
+
+ if (!(usba_ep_readl(ep0, CFG) & USBA_EPT_MAPPED))
+ dev_warn(&udc->pdev->dev,
+ "WARNING: EP0 configuration is invalid!\n");
+ }
+
+ spin_unlock(&udc->lock);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t usba_vbus_irq(int irq, void *devid)
+{
+ struct usba_udc *udc = devid;
+ int vbus;
+
+ /* debounce */
+ udelay(10);
+
+ spin_lock(&udc->lock);
+
+ /* May happen if Vbus pin toggles during probe() */
+ if (!udc->driver)
+ goto out;
+
+ vbus = gpio_get_value(udc->vbus_pin);
+ if (vbus != udc->vbus_prev) {
+ if (vbus) {
+ usba_writel(udc, CTRL, USBA_EN_USBA);
+ usba_writel(udc, INT_ENB, USBA_END_OF_RESET);
+ } else {
+ udc->gadget.speed = USB_SPEED_UNKNOWN;
+ reset_all_endpoints(udc);
+ usba_writel(udc, CTRL, 0);
+ spin_unlock(&udc->lock);
+ udc->driver->disconnect(&udc->gadget);
+ spin_lock(&udc->lock);
+ }
+ udc->vbus_prev = vbus;
+ }
+
+out:
+ spin_unlock(&udc->lock);
+
+ return IRQ_HANDLED;
+}
+
+int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+{
+ struct usba_udc *udc = &the_udc;
+ unsigned long flags;
+ int ret;
+
+ if (!udc->pdev)
+ return -ENODEV;
+
+ spin_lock_irqsave(&udc->lock, flags);
+ if (udc->driver) {
+ spin_unlock_irqrestore(&udc->lock, flags);
+ return -EBUSY;
+ }
+
+ udc->driver = driver;
+ udc->gadget.dev.driver = &driver->driver;
+ spin_unlock_irqrestore(&udc->lock, flags);
+
+ clk_enable(udc->pclk);
+ clk_enable(udc->hclk);
+
+ ret = driver->bind(&udc->gadget);
+ if (ret) {
+ DBG(DBG_ERR, "Could not bind to driver %s: error %d\n",
+ driver->driver.name, ret);
+ goto err_driver_bind;
+ }
+
+ DBG(DBG_GADGET, "registered driver `%s'\n", driver->driver.name);
+
+ udc->vbus_prev = 0;
+ if (udc->vbus_pin != -1)
+ enable_irq(gpio_to_irq(udc->vbus_pin));
+
+ /* If Vbus is present, enable the controller and wait for reset */
+ spin_lock_irqsave(&udc->lock, flags);
+ if (vbus_is_present(udc) && udc->vbus_prev == 0) {
+ usba_writel(udc, CTRL, USBA_EN_USBA);
+ usba_writel(udc, INT_ENB, USBA_END_OF_RESET);
+ }
+ spin_unlock_irqrestore(&udc->lock, flags);
+
+ return 0;
+
+err_driver_bind:
+ udc->driver = NULL;
+ udc->gadget.dev.driver = NULL;
+ return ret;
+}
+EXPORT_SYMBOL(usb_gadget_register_driver);
+
+int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+{
+ struct usba_udc *udc = &the_udc;
+ unsigned long flags;
+
+ if (!udc->pdev)
+ return -ENODEV;
+ if (driver != udc->driver)
+ return -EINVAL;
+
+ if (udc->vbus_pin != -1)
+ disable_irq(gpio_to_irq(udc->vbus_pin));
+
+ spin_lock_irqsave(&udc->lock, flags);
+ udc->gadget.speed = USB_SPEED_UNKNOWN;
+ reset_all_endpoints(udc);
+ spin_unlock_irqrestore(&udc->lock, flags);
+
+ /* This will also disable the DP pullup */
+ usba_writel(udc, CTRL, 0);
+
+ driver->unbind(&udc->gadget);
+ udc->gadget.dev.driver = NULL;
+ udc->driver = NULL;
+
+ clk_disable(udc->hclk);
+ clk_disable(udc->pclk);
+
+ DBG(DBG_GADGET, "unregistered driver `%s'\n", driver->driver.name);
+
+ return 0;
+}
+EXPORT_SYMBOL(usb_gadget_unregister_driver);
+
+static int __init usba_udc_probe(struct platform_device *pdev)
+{
+ struct usba_platform_data *pdata = pdev->dev.platform_data;
+ struct resource *regs, *fifo;
+ struct clk *pclk, *hclk;
+ struct usba_udc *udc = &the_udc;
+ int irq, ret, i;
+
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, CTRL_IOMEM_ID);
+ fifo = platform_get_resource(pdev, IORESOURCE_MEM, FIFO_IOMEM_ID);
+ if (!regs || !fifo)
+ return -ENXIO;
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
+
+ pclk = clk_get(&pdev->dev, "pclk");
+ if (IS_ERR(pclk))
+ return PTR_ERR(pclk);
+ hclk = clk_get(&pdev->dev, "hclk");
+ if (IS_ERR(hclk)) {
+ ret = PTR_ERR(hclk);
+ goto err_get_hclk;
+ }
+
+ udc->pdev = pdev;
+ udc->pclk = pclk;
+ udc->hclk = hclk;
+ udc->vbus_pin = -1;
+
+ ret = -ENOMEM;
+ udc->regs = ioremap(regs->start, regs->end - regs->start + 1);
+ if (!udc->regs) {
+ dev_err(&pdev->dev, "Unable to map I/O memory, aborting.\n");
+ goto err_map_regs;
+ }
+ dev_info(&pdev->dev, "MMIO registers at 0x%08lx mapped at %p\n",
+ (unsigned long)regs->start, udc->regs);
+ udc->fifo = ioremap(fifo->start, fifo->end - fifo->start + 1);
+ if (!udc->fifo) {
+ dev_err(&pdev->dev, "Unable to map FIFO, aborting.\n");
+ goto err_map_fifo;
+ }
+ dev_info(&pdev->dev, "FIFO at 0x%08lx mapped at %p\n",
+ (unsigned long)fifo->start, udc->fifo);
+
+ device_initialize(&udc->gadget.dev);
+ udc->gadget.dev.parent = &pdev->dev;
+ udc->gadget.dev.dma_mask = pdev->dev.dma_mask;
+
+ platform_set_drvdata(pdev, udc);
+
+ /* Make sure we start from a clean slate */
+ clk_enable(pclk);
+ usba_writel(udc, CTRL, 0);
+ clk_disable(pclk);
+
+ INIT_LIST_HEAD(&usba_ep[0].ep.ep_list);
+ usba_ep[0].ep_regs = udc->regs + USBA_EPT_BASE(0);
+ usba_ep[0].dma_regs = udc->regs + USBA_DMA_BASE(0);
+ usba_ep[0].fifo = udc->fifo + USBA_FIFO_BASE(0);
+ for (i = 1; i < ARRAY_SIZE(usba_ep); i++) {
+ struct usba_ep *ep = &usba_ep[i];
+
+ ep->ep_regs = udc->regs + USBA_EPT_BASE(i);
+ ep->dma_regs = udc->regs + USBA_DMA_BASE(i);
+ ep->fifo = udc->fifo + USBA_FIFO_BASE(i);
+
+ list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list);
+ }
+
+ ret = request_irq(irq, usba_udc_irq, 0, "atmel_usba_udc", udc);
+ if (ret) {
+ dev_err(&pdev->dev, "Cannot request irq %d (error %d)\n",
+ irq, ret);
+ goto err_request_irq;
+ }
+ udc->irq = irq;
+
+ ret = device_add(&udc->gadget.dev);
+ if (ret) {
+ dev_dbg(&pdev->dev, "Could not add gadget: %d\n", ret);
+ goto err_device_add;
+ }
+
+ if (pdata && pdata->vbus_pin != GPIO_PIN_NONE) {
+ if (!gpio_request(pdata->vbus_pin, "atmel_usba_udc")) {
+ udc->vbus_pin = pdata->vbus_pin;
+
+ ret = request_irq(gpio_to_irq(udc->vbus_pin),
+ usba_vbus_irq, 0,
+ "atmel_usba_udc", udc);
+ if (ret) {
+ gpio_free(udc->vbus_pin);
+ udc->vbus_pin = -1;
+ dev_warn(&udc->pdev->dev,
+ "failed to request vbus irq; "
+ "assuming always on\n");
+ } else {
+ disable_irq(gpio_to_irq(udc->vbus_pin));
+ }
+ }
+ }
+
+ usba_init_debugfs(udc);
+ for (i = 1; i < ARRAY_SIZE(usba_ep); i++)
+ usba_ep_init_debugfs(udc, &usba_ep[i]);
+
+ return 0;
+
+err_device_add:
+ free_irq(irq, udc);
+err_request_irq:
+ iounmap(udc->fifo);
+err_map_fifo:
+ iounmap(udc->regs);
+err_map_regs:
+ clk_put(hclk);
+err_get_hclk:
+ clk_put(pclk);
+
+ platform_set_drvdata(pdev, NULL);
+
+ return ret;
+}
+
+static int __exit usba_udc_remove(struct platform_device *pdev)
+{
+ struct usba_udc *udc;
+ int i;
+
+ udc = platform_get_drvdata(pdev);
+
+ for (i = 1; i < ARRAY_SIZE(usba_ep); i++)
+ usba_ep_cleanup_debugfs(&usba_ep[i]);
+ usba_cleanup_debugfs(udc);
+
+ if (udc->vbus_pin != -1)
+ gpio_free(udc->vbus_pin);
+
+ free_irq(udc->irq, udc);
+ iounmap(udc->fifo);
+ iounmap(udc->regs);
+ clk_put(udc->hclk);
+ clk_put(udc->pclk);
+
+ device_unregister(&udc->gadget.dev);
+
+ return 0;
+}
+
+static struct platform_driver udc_driver = {
+ .remove = __exit_p(usba_udc_remove),
+ .driver = {
+ .name = "atmel_usba_udc",
+ },
+};
+
+static int __init udc_init(void)
+{
+ return platform_driver_probe(&udc_driver, usba_udc_probe);
+}
+module_init(udc_init);
+
+static void __exit udc_exit(void)
+{
+ platform_driver_unregister(&udc_driver);
+}
+module_exit(udc_exit);
+
+MODULE_DESCRIPTION("Atmel USBA UDC driver");
+MODULE_AUTHOR("Haavard Skinnemoen <hskinnemoen@atmel.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/gadget/atmel_usba_udc.h b/drivers/usb/gadget/atmel_usba_udc.h
new file mode 100644
index 0000000..f4f0f8b
--- /dev/null
+++ b/drivers/usb/gadget/atmel_usba_udc.h
@@ -0,0 +1,350 @@
+/*
+ * Driver for the Atmel USBA high speed USB device controller
+ *
+ * Copyright (C) 2005-2007 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __LINUX_USB_GADGET_USBA_UDC_H__
+#define __LINUX_USB_GADGET_USBA_UDC_H__
+
+/* USB register offsets */
+#define USBA_CTRL 0x0000
+#define USBA_FNUM 0x0004
+#define USBA_INT_ENB 0x0010
+#define USBA_INT_STA 0x0014
+#define USBA_INT_CLR 0x0018
+#define USBA_EPT_RST 0x001c
+#define USBA_TST 0x00e0
+
+/* USB endpoint register offsets */
+#define USBA_EPT_CFG 0x0000
+#define USBA_EPT_CTL_ENB 0x0004
+#define USBA_EPT_CTL_DIS 0x0008
+#define USBA_EPT_CTL 0x000c
+#define USBA_EPT_SET_STA 0x0014
+#define USBA_EPT_CLR_STA 0x0018
+#define USBA_EPT_STA 0x001c
+
+/* USB DMA register offsets */
+#define USBA_DMA_NXT_DSC 0x0000
+#define USBA_DMA_ADDRESS 0x0004
+#define USBA_DMA_CONTROL 0x0008
+#define USBA_DMA_STATUS 0x000c
+
+/* Bitfields in CTRL */
+#define USBA_DEV_ADDR_OFFSET 0
+#define USBA_DEV_ADDR_SIZE 7
+#define USBA_FADDR_EN (1 << 7)
+#define USBA_EN_USBA (1 << 8)
+#define USBA_DETACH (1 << 9)
+#define USBA_REMOTE_WAKE_UP (1 << 10)
+
+/* Bitfields in FNUM */
+#define USBA_MICRO_FRAME_NUM_OFFSET 0
+#define USBA_MICRO_FRAME_NUM_SIZE 3
+#define USBA_FRAME_NUMBER_OFFSET 3
+#define USBA_FRAME_NUMBER_SIZE 11
+#define USBA_FRAME_NUM_ERROR (1 << 31)
+
+/* Bitfields in INT_ENB/INT_STA/INT_CLR */
+#define USBA_HIGH_SPEED (1 << 0)
+#define USBA_DET_SUSPEND (1 << 1)
+#define USBA_MICRO_SOF (1 << 2)
+#define USBA_SOF (1 << 3)
+#define USBA_END_OF_RESET (1 << 4)
+#define USBA_WAKE_UP (1 << 5)
+#define USBA_END_OF_RESUME (1 << 6)
+#define USBA_UPSTREAM_RESUME (1 << 7)
+#define USBA_EPT_INT_OFFSET 8
+#define USBA_EPT_INT_SIZE 16
+#define USBA_DMA_INT_OFFSET 24
+#define USBA_DMA_INT_SIZE 8
+
+/* Bitfields in EPT_RST */
+#define USBA_RST_OFFSET 0
+#define USBA_RST_SIZE 16
+
+/* Bitfields in USBA_TST */
+#define USBA_SPEED_CFG_OFFSET 0
+#define USBA_SPEED_CFG_SIZE 2
+#define USBA_TST_J_MODE (1 << 2)
+#define USBA_TST_K_MODE (1 << 3)
+#define USBA_TST_PKT_MODE (1 << 4)
+#define USBA_OPMODE2 (1 << 5)
+
+/* Bitfields in EPT_CFG */
+#define USBA_EPT_SIZE_OFFSET 0
+#define USBA_EPT_SIZE_SIZE 3
+#define USBA_EPT_DIR_IN (1 << 3)
+#define USBA_EPT_TYPE_OFFSET 4
+#define USBA_EPT_TYPE_SIZE 2
+#define USBA_BK_NUMBER_OFFSET 6
+#define USBA_BK_NUMBER_SIZE 2
+#define USBA_NB_TRANS_OFFSET 8
+#define USBA_NB_TRANS_SIZE 2
+#define USBA_EPT_MAPPED (1 << 31)
+
+/* Bitfields in EPT_CTL/EPT_CTL_ENB/EPT_CTL_DIS */
+#define USBA_EPT_ENABLE (1 << 0)
+#define USBA_AUTO_VALID (1 << 1)
+#define USBA_INTDIS_DMA (1 << 3)
+#define USBA_NYET_DIS (1 << 4)
+#define USBA_DATAX_RX (1 << 6)
+#define USBA_MDATA_RX (1 << 7)
+/* Bits 8-15 and 31 enable interrupts for respective bits in EPT_STA */
+#define USBA_BUSY_BANK_IE (1 << 18)
+
+/* Bitfields in EPT_SET_STA/EPT_CLR_STA/EPT_STA */
+#define USBA_FORCE_STALL (1 << 5)
+#define USBA_TOGGLE_CLR (1 << 6)
+#define USBA_TOGGLE_SEQ_OFFSET 6
+#define USBA_TOGGLE_SEQ_SIZE 2
+#define USBA_ERR_OVFLW (1 << 8)
+#define USBA_RX_BK_RDY (1 << 9)
+#define USBA_KILL_BANK (1 << 9)
+#define USBA_TX_COMPLETE (1 << 10)
+#define USBA_TX_PK_RDY (1 << 11)
+#define USBA_ISO_ERR_TRANS (1 << 11)
+#define USBA_RX_SETUP (1 << 12)
+#define USBA_ISO_ERR_FLOW (1 << 12)
+#define USBA_STALL_SENT (1 << 13)
+#define USBA_ISO_ERR_CRC (1 << 13)
+#define USBA_ISO_ERR_NBTRANS (1 << 13)
+#define USBA_NAK_IN (1 << 14)
+#define USBA_ISO_ERR_FLUSH (1 << 14)
+#define USBA_NAK_OUT (1 << 15)
+#define USBA_CURRENT_BANK_OFFSET 16
+#define USBA_CURRENT_BANK_SIZE 2
+#define USBA_BUSY_BANKS_OFFSET 18
+#define USBA_BUSY_BANKS_SIZE 2
+#define USBA_BYTE_COUNT_OFFSET 20
+#define USBA_BYTE_COUNT_SIZE 11
+#define USBA_SHORT_PACKET (1 << 31)
+
+/* Bitfields in DMA_CONTROL */
+#define USBA_DMA_CH_EN (1 << 0)
+#define USBA_DMA_LINK (1 << 1)
+#define USBA_DMA_END_TR_EN (1 << 2)
+#define USBA_DMA_END_BUF_EN (1 << 3)
+#define USBA_DMA_END_TR_IE (1 << 4)
+#define USBA_DMA_END_BUF_IE (1 << 5)
+#define USBA_DMA_DESC_LOAD_IE (1 << 6)
+#define USBA_DMA_BURST_LOCK (1 << 7)
+#define USBA_DMA_BUF_LEN_OFFSET 16
+#define USBA_DMA_BUF_LEN_SIZE 16
+
+/* Bitfields in DMA_STATUS */
+#define USBA_DMA_CH_ACTIVE (1 << 1)
+#define USBA_DMA_END_TR_ST (1 << 4)
+#define USBA_DMA_END_BUF_ST (1 << 5)
+#define USBA_DMA_DESC_LOAD_ST (1 << 6)
+
+/* Constants for SPEED_CFG */
+#define USBA_SPEED_CFG_NORMAL 0
+#define USBA_SPEED_CFG_FORCE_HIGH 2
+#define USBA_SPEED_CFG_FORCE_FULL 3
+
+/* Constants for EPT_SIZE */
+#define USBA_EPT_SIZE_8 0
+#define USBA_EPT_SIZE_16 1
+#define USBA_EPT_SIZE_32 2
+#define USBA_EPT_SIZE_64 3
+#define USBA_EPT_SIZE_128 4
+#define USBA_EPT_SIZE_256 5
+#define USBA_EPT_SIZE_512 6
+#define USBA_EPT_SIZE_1024 7
+
+/* Constants for EPT_TYPE */
+#define USBA_EPT_TYPE_CONTROL 0
+#define USBA_EPT_TYPE_ISO 1
+#define USBA_EPT_TYPE_BULK 2
+#define USBA_EPT_TYPE_INT 3
+
+/* Constants for BK_NUMBER */
+#define USBA_BK_NUMBER_ZERO 0
+#define USBA_BK_NUMBER_ONE 1
+#define USBA_BK_NUMBER_DOUBLE 2
+#define USBA_BK_NUMBER_TRIPLE 3
+
+/* Bit manipulation macros */
+#define USBA_BF(name, value) \
+ (((value) & ((1 << USBA_##name##_SIZE) - 1)) \
+ << USBA_##name##_OFFSET)
+#define USBA_BFEXT(name, value) \
+ (((value) >> USBA_##name##_OFFSET) \
+ & ((1 << USBA_##name##_SIZE) - 1))
+#define USBA_BFINS(name, value, old) \
+ (((old) & ~(((1 << USBA_##name##_SIZE) - 1) \
+ << USBA_##name##_OFFSET)) \
+ | USBA_BF(name, value))
+
+/* Register access macros */
+#define usba_readl(udc, reg) \
+ __raw_readl((udc)->regs + USBA_##reg)
+#define usba_writel(udc, reg, value) \
+ __raw_writel((value), (udc)->regs + USBA_##reg)
+#define usba_ep_readl(ep, reg) \
+ __raw_readl((ep)->ep_regs + USBA_EPT_##reg)
+#define usba_ep_writel(ep, reg, value) \
+ __raw_writel((value), (ep)->ep_regs + USBA_EPT_##reg)
+#define usba_dma_readl(ep, reg) \
+ __raw_readl((ep)->dma_regs + USBA_DMA_##reg)
+#define usba_dma_writel(ep, reg, value) \
+ __raw_writel((value), (ep)->dma_regs + USBA_DMA_##reg)
+
+/* Calculate base address for a given endpoint or DMA controller */
+#define USBA_EPT_BASE(x) (0x100 + (x) * 0x20)
+#define USBA_DMA_BASE(x) (0x300 + (x) * 0x10)
+#define USBA_FIFO_BASE(x) ((x) << 16)
+
+/* Synth parameters */
+#define USBA_NR_ENDPOINTS 7
+
+#define EP0_FIFO_SIZE 64
+#define EP0_EPT_SIZE USBA_EPT_SIZE_64
+#define EP0_NR_BANKS 1
+
+/*
+ * REVISIT: Try to eliminate this value. Can we rely on req->mapped to
+ * provide this information?
+ */
+#define DMA_ADDR_INVALID (~(dma_addr_t)0)
+
+#define FIFO_IOMEM_ID 0
+#define CTRL_IOMEM_ID 1
+
+#ifdef DEBUG
+#define DBG_ERR 0x0001 /* report all error returns */
+#define DBG_HW 0x0002 /* debug hardware initialization */
+#define DBG_GADGET 0x0004 /* calls to/from gadget driver */
+#define DBG_INT 0x0008 /* interrupts */
+#define DBG_BUS 0x0010 /* report changes in bus state */
+#define DBG_QUEUE 0x0020 /* debug request queue processing */
+#define DBG_FIFO 0x0040 /* debug FIFO contents */
+#define DBG_DMA 0x0080 /* debug DMA handling */
+#define DBG_REQ 0x0100 /* print out queued request length */
+#define DBG_ALL 0xffff
+#define DBG_NONE 0x0000
+
+#define DEBUG_LEVEL (DBG_ERR)
+#define DBG(level, fmt, ...) \
+ do { \
+ if ((level) & DEBUG_LEVEL) \
+ printk(KERN_DEBUG "udc: " fmt, ## __VA_ARGS__); \
+ } while (0)
+#else
+#define DBG(level, fmt...)
+#endif
+
+enum usba_ctrl_state {
+ WAIT_FOR_SETUP,
+ DATA_STAGE_IN,
+ DATA_STAGE_OUT,
+ STATUS_STAGE_IN,
+ STATUS_STAGE_OUT,
+ STATUS_STAGE_ADDR,
+ STATUS_STAGE_TEST,
+};
+/*
+ EP_STATE_IDLE,
+ EP_STATE_SETUP,
+ EP_STATE_IN_DATA,
+ EP_STATE_OUT_DATA,
+ EP_STATE_SET_ADDR_STATUS,
+ EP_STATE_RX_STATUS,
+ EP_STATE_TX_STATUS,
+ EP_STATE_HALT,
+*/
+
+struct usba_dma_desc {
+ dma_addr_t next;
+ dma_addr_t addr;
+ u32 ctrl;
+};
+
+struct usba_ep {
+ int state;
+ void __iomem *ep_regs;
+ void __iomem *dma_regs;
+ void __iomem *fifo;
+ struct usb_ep ep;
+ struct usba_udc *udc;
+
+ struct list_head queue;
+ const struct usb_endpoint_descriptor *desc;
+
+ u16 fifo_size;
+ u8 nr_banks;
+ u8 index;
+ unsigned int can_dma:1;
+ unsigned int can_isoc:1;
+ unsigned int is_isoc:1;
+ unsigned int is_in:1;
+
+#ifdef CONFIG_USB_GADGET_DEBUG_FS
+ u32 last_dma_status;
+ struct dentry *debugfs_dir;
+ struct dentry *debugfs_queue;
+ struct dentry *debugfs_dma_status;
+ struct dentry *debugfs_state;
+#endif
+};
+
+struct usba_request {
+ struct usb_request req;
+ struct list_head queue;
+
+ u32 ctrl;
+
+ unsigned int submitted:1;
+ unsigned int last_transaction:1;
+ unsigned int using_dma:1;
+ unsigned int mapped:1;
+};
+
+struct usba_udc {
+ /* Protect hw registers from concurrent modifications */
+ spinlock_t lock;
+
+ void __iomem *regs;
+ void __iomem *fifo;
+
+ struct usb_gadget gadget;
+ struct usb_gadget_driver *driver;
+ struct platform_device *pdev;
+ int irq;
+ int vbus_pin;
+ struct clk *pclk;
+ struct clk *hclk;
+
+ int test_mode;
+ int vbus_prev;
+
+#ifdef CONFIG_USB_GADGET_DEBUG_FS
+ struct dentry *debugfs_root;
+ struct dentry *debugfs_regs;
+#endif
+};
+
+static inline struct usba_ep *to_usba_ep(struct usb_ep *ep)
+{
+ return container_of(ep, struct usba_ep, ep);
+}
+
+static inline struct usba_request *to_usba_req(struct usb_request *req)
+{
+ return container_of(req, struct usba_request, req);
+}
+
+static inline struct usba_udc *to_usba_udc(struct usb_gadget *gadget)
+{
+ return container_of(gadget, struct usba_udc, gadget);
+}
+
+#define ep_is_control(ep) ((ep)->index == 0)
+#define ep_is_idle(ep) ((ep)->state == EP_STATE_IDLE)
+
+#endif /* __LINUX_USB_GADGET_USBA_UDC_H */
diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c
index 235b618..bb361ab 100644
--- a/drivers/video/atmel_lcdfb.c
+++ b/drivers/video/atmel_lcdfb.c
@@ -37,7 +37,9 @@
#endif
#if defined(CONFIG_ARCH_AT91)
-#define ATMEL_LCDFB_FBINFO_DEFAULT FBINFO_DEFAULT
+#define ATMEL_LCDFB_FBINFO_DEFAULT (FBINFO_DEFAULT \
+ | FBINFO_PARTIAL_PAN_OK \
+ | FBINFO_HWACCEL_YPAN)
static inline void atmel_lcdfb_update_dma2d(struct atmel_lcdfb_info *sinfo,
struct fb_var_screeninfo *var)
@@ -74,7 +76,7 @@ static struct fb_fix_screeninfo atmel_lcdfb_fix __initdata = {
.type = FB_TYPE_PACKED_PIXELS,
.visual = FB_VISUAL_TRUECOLOR,
.xpanstep = 0,
- .ypanstep = 0,
+ .ypanstep = 1,
.ywrapstep = 0,
.accel = FB_ACCEL_NONE,
};
diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index 2580f5f..b6f936a 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -24,6 +24,18 @@ config LCD_CLASS_DEVICE
To have support for your specific LCD panel you will have to
select the proper drivers which depend on this option.
+config LCD_LTV350QV
+ tristate "Samsung LTV350QV LCD Panel"
+ depends on LCD_CLASS_DEVICE && SPI_MASTER
+ default n
+ help
+ If you have a Samsung LTV350QV LCD panel, say y to include a
+ power control driver for it. The panel starts up in power
+ off state, so you need this driver in order to see any
+ output.
+
+ The LTV350QV panel is present on all ATSTK1000 boards.
+
#
# Backlight
#
diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile
index c6e2266..965a78b 100644
--- a/drivers/video/backlight/Makefile
+++ b/drivers/video/backlight/Makefile
@@ -1,6 +1,8 @@
# Backlight & LCD drivers
obj-$(CONFIG_LCD_CLASS_DEVICE) += lcd.o
+obj-$(CONFIG_LCD_LTV350QV) += ltv350qv.o
+
obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o
obj-$(CONFIG_BACKLIGHT_CORGI) += corgi_bl.o
obj-$(CONFIG_BACKLIGHT_HP680) += hp680_bl.o
diff --git a/drivers/video/backlight/ltv350qv.c b/drivers/video/backlight/ltv350qv.c
new file mode 100644
index 0000000..751dc53
--- /dev/null
+++ b/drivers/video/backlight/ltv350qv.c
@@ -0,0 +1,339 @@
+/*
+ * Power control for Samsung LTV350QV Quarter VGA LCD Panel
+ *
+ * Copyright (C) 2006, 2007 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/lcd.h>
+#include <linux/module.h>
+#include <linux/spi/spi.h>
+
+#include "ltv350qv.h"
+
+#define POWER_IS_ON(pwr) ((pwr) <= FB_BLANK_NORMAL)
+
+struct ltv350qv {
+ struct spi_device *spi;
+ u8 *buffer;
+ int power;
+ struct lcd_device *ld;
+};
+
+/*
+ * The power-on and power-off sequences are taken from the
+ * LTV350QV-F04 data sheet from Samsung. The register definitions are
+ * taken from the S6F2002 command list also from Samsung. Both
+ * documents are distributed with the AVR32 Linux BSP CD from Atmel.
+ *
+ * There's still some voodoo going on here, but it's a lot better than
+ * in the first incarnation of the driver where all we had was the raw
+ * numbers from the initialization sequence.
+ */
+static int ltv350qv_write_reg(struct ltv350qv *lcd, u8 reg, u16 val)
+{
+ struct spi_message msg;
+ struct spi_transfer index_xfer = {
+ .len = 3,
+ .cs_change = 1,
+ };
+ struct spi_transfer value_xfer = {
+ .len = 3,
+ };
+
+ spi_message_init(&msg);
+
+ /* register index */
+ lcd->buffer[0] = LTV_OPC_INDEX;
+ lcd->buffer[1] = 0x00;
+ lcd->buffer[2] = reg & 0x7f;
+ index_xfer.tx_buf = lcd->buffer;
+ spi_message_add_tail(&index_xfer, &msg);
+
+ /* register value */
+ lcd->buffer[4] = LTV_OPC_DATA;
+ lcd->buffer[5] = val >> 8;
+ lcd->buffer[6] = val;
+ value_xfer.tx_buf = lcd->buffer + 4;
+ spi_message_add_tail(&value_xfer, &msg);
+
+ return spi_sync(lcd->spi, &msg);
+}
+
+/* The comments are taken straight from the data sheet */
+static int ltv350qv_power_on(struct ltv350qv *lcd)
+{
+ int ret;
+
+ /* Power On Reset Display off State */
+ if (ltv350qv_write_reg(lcd, LTV_PWRCTL1, 0x0000))
+ goto err;
+ msleep(15);
+
+ /* Power Setting Function 1 */
+ if (ltv350qv_write_reg(lcd, LTV_PWRCTL1, LTV_VCOM_DISABLE))
+ goto err;
+ if (ltv350qv_write_reg(lcd, LTV_PWRCTL2, LTV_VCOML_ENABLE))
+ goto err_power1;
+
+ /* Power Setting Function 2 */
+ if (ltv350qv_write_reg(lcd, LTV_PWRCTL1,
+ LTV_VCOM_DISABLE | LTV_DRIVE_CURRENT(5)
+ | LTV_SUPPLY_CURRENT(5)))
+ goto err_power2;
+
+ msleep(55);
+
+ /* Instruction Setting */
+ ret = ltv350qv_write_reg(lcd, LTV_IFCTL,
+ LTV_NMD | LTV_REV | LTV_NL(0x1d));
+ ret |= ltv350qv_write_reg(lcd, LTV_DATACTL,
+ LTV_DS_SAME | LTV_CHS_480
+ | LTV_DF_RGB | LTV_RGB_BGR);
+ ret |= ltv350qv_write_reg(lcd, LTV_ENTRY_MODE,
+ LTV_VSPL_ACTIVE_LOW
+ | LTV_HSPL_ACTIVE_LOW
+ | LTV_DPL_SAMPLE_RISING
+ | LTV_EPL_ACTIVE_LOW
+ | LTV_SS_RIGHT_TO_LEFT);
+ ret |= ltv350qv_write_reg(lcd, LTV_GATECTL1, LTV_CLW(3));
+ ret |= ltv350qv_write_reg(lcd, LTV_GATECTL2,
+ LTV_NW_INV_1LINE | LTV_FWI(3));
+ ret |= ltv350qv_write_reg(lcd, LTV_VBP, 0x000a);
+ ret |= ltv350qv_write_reg(lcd, LTV_HBP, 0x0021);
+ ret |= ltv350qv_write_reg(lcd, LTV_SOTCTL, LTV_SDT(3) | LTV_EQ(0));
+ ret |= ltv350qv_write_reg(lcd, LTV_GAMMA(0), 0x0103);
+ ret |= ltv350qv_write_reg(lcd, LTV_GAMMA(1), 0x0301);
+ ret |= ltv350qv_write_reg(lcd, LTV_GAMMA(2), 0x1f0f);
+ ret |= ltv350qv_write_reg(lcd, LTV_GAMMA(3), 0x1f0f);
+ ret |= ltv350qv_write_reg(lcd, LTV_GAMMA(4), 0x0707);
+ ret |= ltv350qv_write_reg(lcd, LTV_GAMMA(5), 0x0307);
+ ret |= ltv350qv_write_reg(lcd, LTV_GAMMA(6), 0x0707);
+ ret |= ltv350qv_write_reg(lcd, LTV_GAMMA(7), 0x0000);
+ ret |= ltv350qv_write_reg(lcd, LTV_GAMMA(8), 0x0004);
+ ret |= ltv350qv_write_reg(lcd, LTV_GAMMA(9), 0x0000);
+ if (ret)
+ goto err_settings;
+
+ /* Wait more than 2 frames */
+ msleep(20);
+
+ /* Display On Sequence */
+ ret = ltv350qv_write_reg(lcd, LTV_PWRCTL1,
+ LTV_VCOM_DISABLE | LTV_VCOMOUT_ENABLE
+ | LTV_POWER_ON | LTV_DRIVE_CURRENT(5)
+ | LTV_SUPPLY_CURRENT(5));
+ ret |= ltv350qv_write_reg(lcd, LTV_GATECTL2,
+ LTV_NW_INV_1LINE | LTV_DSC | LTV_FWI(3));
+ if (ret)
+ goto err_disp_on;
+
+ /* Display should now be ON. Phew. */
+ return 0;
+
+err_disp_on:
+ /*
+ * Try to recover. Error handling probably isn't very useful
+ * at this point, just make a best effort to switch the panel
+ * off.
+ */
+ ltv350qv_write_reg(lcd, LTV_PWRCTL1,
+ LTV_VCOM_DISABLE | LTV_DRIVE_CURRENT(5)
+ | LTV_SUPPLY_CURRENT(5));
+ ltv350qv_write_reg(lcd, LTV_GATECTL2,
+ LTV_NW_INV_1LINE | LTV_FWI(3));
+err_settings:
+err_power2:
+err_power1:
+ ltv350qv_write_reg(lcd, LTV_PWRCTL2, 0x0000);
+ msleep(1);
+err:
+ ltv350qv_write_reg(lcd, LTV_PWRCTL1, LTV_VCOM_DISABLE);
+ return -EIO;
+}
+
+static int ltv350qv_power_off(struct ltv350qv *lcd)
+{
+ int ret;
+
+ /* Display Off Sequence */
+ ret = ltv350qv_write_reg(lcd, LTV_PWRCTL1,
+ LTV_VCOM_DISABLE
+ | LTV_DRIVE_CURRENT(5)
+ | LTV_SUPPLY_CURRENT(5));
+ ret |= ltv350qv_write_reg(lcd, LTV_GATECTL2,
+ LTV_NW_INV_1LINE | LTV_FWI(3));
+
+ /* Power down setting 1 */
+ ret |= ltv350qv_write_reg(lcd, LTV_PWRCTL2, 0x0000);
+
+ /* Wait at least 1 ms */
+ msleep(1);
+
+ /* Power down setting 2 */
+ ret |= ltv350qv_write_reg(lcd, LTV_PWRCTL1, LTV_VCOM_DISABLE);
+
+ /*
+ * No point in trying to recover here. If we can't switch the
+ * panel off, what are we supposed to do other than inform the
+ * user about the failure?
+ */
+ if (ret)
+ return -EIO;
+
+ /* Display power should now be OFF */
+ return 0;
+}
+
+static int ltv350qv_power(struct ltv350qv *lcd, int power)
+{
+ int ret = 0;
+
+ if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power))
+ ret = ltv350qv_power_on(lcd);
+ else if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->power))
+ ret = ltv350qv_power_off(lcd);
+
+ if (!ret)
+ lcd->power = power;
+
+ return ret;
+}
+
+static int ltv350qv_set_power(struct lcd_device *ld, int power)
+{
+ struct ltv350qv *lcd;
+
+ lcd = lcd_get_data(ld);
+ return ltv350qv_power(lcd, power);
+}
+
+static int ltv350qv_get_power(struct lcd_device *ld)
+{
+ struct ltv350qv *lcd;
+
+ lcd = lcd_get_data(ld);
+ return lcd->power;
+}
+
+static struct lcd_ops ltv_ops = {
+ .get_power = ltv350qv_get_power,
+ .set_power = ltv350qv_set_power,
+};
+
+static int __devinit ltv350qv_probe(struct spi_device *spi)
+{
+ struct ltv350qv *lcd;
+ struct lcd_device *ld;
+ int ret;
+
+ lcd = kzalloc(sizeof(struct ltv350qv), GFP_KERNEL);
+ if (!lcd)
+ return -ENOMEM;
+
+ lcd->spi = spi;
+ lcd->power = FB_BLANK_POWERDOWN;
+ lcd->buffer = kzalloc(8, GFP_KERNEL);
+
+ ld = lcd_device_register("ltv350qv", &spi->dev, lcd, &ltv_ops);
+ if (IS_ERR(ld)) {
+ ret = PTR_ERR(ld);
+ goto out_free_lcd;
+ }
+ lcd->ld = ld;
+
+ ret = ltv350qv_power(lcd, FB_BLANK_UNBLANK);
+ if (ret)
+ goto out_unregister;
+
+ dev_set_drvdata(&spi->dev, lcd);
+
+ return 0;
+
+out_unregister:
+ lcd_device_unregister(ld);
+out_free_lcd:
+ kfree(lcd);
+ return ret;
+}
+
+static int __devexit ltv350qv_remove(struct spi_device *spi)
+{
+ struct ltv350qv *lcd = dev_get_drvdata(&spi->dev);
+
+ ltv350qv_power(lcd, FB_BLANK_POWERDOWN);
+ lcd_device_unregister(lcd->ld);
+ kfree(lcd);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int ltv350qv_suspend(struct spi_device *spi,
+ pm_message_t state, u32 level)
+{
+ struct ltv350qv *lcd = dev_get_drvdata(&spi->dev);
+
+ if (level == SUSPEND_POWER_DOWN)
+ return ltv350qv_power(lcd, FB_BLANK_POWERDOWN);
+
+ return 0;
+}
+
+static int ltv350qv_resume(struct spi_device *spi, u32 level)
+{
+ struct ltv350qv *lcd = dev_get_drvdata(&spi->dev);
+
+ if (level == RESUME_POWER_ON)
+ return ltv350qv_power(lcd, FB_BLANK_UNBLANK);
+
+ return 0;
+}
+#else
+#define ltv350qv_suspend NULL
+#define ltv350qv_resume NULL
+#endif
+
+/* Power down all displays on reboot, poweroff or halt */
+static void ltv350qv_shutdown(struct spi_device *spi)
+{
+ struct ltv350qv *lcd = dev_get_drvdata(&spi->dev);
+
+ ltv350qv_power(lcd, FB_BLANK_POWERDOWN);
+}
+
+static struct spi_driver ltv350qv_driver = {
+ .driver = {
+ .name = "ltv350qv",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+
+ .probe = ltv350qv_probe,
+ .remove = __devexit_p(ltv350qv_remove),
+ .shutdown = ltv350qv_shutdown,
+ .suspend = ltv350qv_suspend,
+ .resume = ltv350qv_resume,
+};
+
+static int __init ltv350qv_init(void)
+{
+ return spi_register_driver(&ltv350qv_driver);
+}
+
+static void __exit ltv350qv_exit(void)
+{
+ spi_unregister_driver(&ltv350qv_driver);
+}
+module_init(ltv350qv_init);
+module_exit(ltv350qv_exit);
+
+MODULE_AUTHOR("Haavard Skinnemoen <hskinnemoen@atmel.com>");
+MODULE_DESCRIPTION("Samsung LTV350QV LCD Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/video/backlight/ltv350qv.h b/drivers/video/backlight/ltv350qv.h
new file mode 100644
index 0000000..189112e
--- /dev/null
+++ b/drivers/video/backlight/ltv350qv.h
@@ -0,0 +1,95 @@
+/*
+ * Register definitions for Samsung LTV350QV Quarter VGA LCD Panel
+ *
+ * Copyright (C) 2006, 2007 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __LTV350QV_H
+#define __LTV350QV_H
+
+#define LTV_OPC_INDEX 0x74
+#define LTV_OPC_DATA 0x76
+
+#define LTV_ID 0x00 /* ID Read */
+#define LTV_IFCTL 0x01 /* Display Interface Control */
+#define LTV_DATACTL 0x02 /* Display Data Control */
+#define LTV_ENTRY_MODE 0x03 /* Entry Mode */
+#define LTV_GATECTL1 0x04 /* Gate Control 1 */
+#define LTV_GATECTL2 0x05 /* Gate Control 2 */
+#define LTV_VBP 0x06 /* Vertical Back Porch */
+#define LTV_HBP 0x07 /* Horizontal Back Porch */
+#define LTV_SOTCTL 0x08 /* Source Output Timing Control */
+#define LTV_PWRCTL1 0x09 /* Power Control 1 */
+#define LTV_PWRCTL2 0x0a /* Power Control 2 */
+#define LTV_GAMMA(x) (0x10 + (x)) /* Gamma control */
+
+/* Bit definitions for LTV_IFCTL */
+#define LTV_IM (1 << 15)
+#define LTV_NMD (1 << 14)
+#define LTV_SSMD (1 << 13)
+#define LTV_REV (1 << 7)
+#define LTV_NL(x) (((x) & 0x001f) << 0)
+
+/* Bit definitions for LTV_DATACTL */
+#define LTV_DS_SAME (0 << 12)
+#define LTV_DS_D_TO_S (1 << 12)
+#define LTV_DS_S_TO_D (2 << 12)
+#define LTV_CHS_384 (0 << 9)
+#define LTV_CHS_480 (1 << 9)
+#define LTV_CHS_492 (2 << 9)
+#define LTV_DF_RGB (0 << 6)
+#define LTV_DF_RGBX (1 << 6)
+#define LTV_DF_XRGB (2 << 6)
+#define LTV_RGB_RGB (0 << 2)
+#define LTV_RGB_BGR (1 << 2)
+#define LTV_RGB_GRB (2 << 2)
+#define LTV_RGB_RBG (3 << 2)
+
+/* Bit definitions for LTV_ENTRY_MODE */
+#define LTV_VSPL_ACTIVE_LOW (0 << 15)
+#define LTV_VSPL_ACTIVE_HIGH (1 << 15)
+#define LTV_HSPL_ACTIVE_LOW (0 << 14)
+#define LTV_HSPL_ACTIVE_HIGH (1 << 14)
+#define LTV_DPL_SAMPLE_RISING (0 << 13)
+#define LTV_DPL_SAMPLE_FALLING (1 << 13)
+#define LTV_EPL_ACTIVE_LOW (0 << 12)
+#define LTV_EPL_ACTIVE_HIGH (1 << 12)
+#define LTV_SS_LEFT_TO_RIGHT (0 << 8)
+#define LTV_SS_RIGHT_TO_LEFT (1 << 8)
+#define LTV_STB (1 << 1)
+
+/* Bit definitions for LTV_GATECTL1 */
+#define LTV_CLW(x) (((x) & 0x0007) << 12)
+#define LTV_GAON (1 << 5)
+#define LTV_SDR (1 << 3)
+
+/* Bit definitions for LTV_GATECTL2 */
+#define LTV_NW_INV_FRAME (0 << 14)
+#define LTV_NW_INV_1LINE (1 << 14)
+#define LTV_NW_INV_2LINE (2 << 14)
+#define LTV_DSC (1 << 12)
+#define LTV_GIF (1 << 8)
+#define LTV_FHN (1 << 7)
+#define LTV_FTI(x) (((x) & 0x0003) << 4)
+#define LTV_FWI(x) (((x) & 0x0003) << 0)
+
+/* Bit definitions for LTV_SOTCTL */
+#define LTV_SDT(x) (((x) & 0x0007) << 10)
+#define LTV_EQ(x) (((x) & 0x0007) << 2)
+
+/* Bit definitions for LTV_PWRCTL1 */
+#define LTV_VCOM_DISABLE (1 << 14)
+#define LTV_VCOMOUT_ENABLE (1 << 11)
+#define LTV_POWER_ON (1 << 9)
+#define LTV_DRIVE_CURRENT(x) (((x) & 0x0007) << 4) /* 0=off, 5=max */
+#define LTV_SUPPLY_CURRENT(x) (((x) & 0x0007) << 0) /* 0=off, 5=max */
+
+/* Bit definitions for LTV_PWRCTL2 */
+#define LTV_VCOML_ENABLE (1 << 13)
+#define LTV_VCOML_VOLTAGE(x) (((x) & 0x001f) << 8) /* 0=1V, 31=-1V */
+#define LTV_VCOMH_VOLTAGE(x) (((x) & 0x001f) << 0) /* 0=3V, 31=4.5V */
+
+#endif /* __LTV350QV_H */
diff --git a/include/asm-avr32/arch-at32ap/board.h b/include/asm-avr32/arch-at32ap/board.h
index 0215965..e1318e0 100644
--- a/include/asm-avr32/arch-at32ap/board.h
+++ b/include/asm-avr32/arch-at32ap/board.h
@@ -6,6 +6,8 @@
#include <linux/types.h>
+#define GPIO_PIN_NONE (-1)
+
/* Add basic devices: system manager, interrupt controller, portmuxes, etc. */
void at32_add_system_devices(void);
@@ -31,11 +33,26 @@ struct spi_board_info;
struct platform_device *
at32_add_device_spi(unsigned int id, struct spi_board_info *b, unsigned int n);
+struct platform_device *at32_add_device_twi(unsigned int id);
+
+struct mci_platform_data {
+ int detect_pin;
+ int wp_pin;
+};
+struct platform_device *
+at32_add_device_mci(unsigned int id, struct mci_platform_data *data);
+
struct atmel_lcdfb_info;
struct platform_device *
at32_add_device_lcdc(unsigned int id, struct atmel_lcdfb_info *data,
unsigned long fbmem_start, unsigned long fbmem_len);
+struct usba_platform_data {
+ int vbus_pin;
+};
+struct platform_device *
+at32_add_device_usba(unsigned int id, struct usba_platform_data *data);
+
/* depending on what's hooked up, not all SSC pins will be used */
#define ATMEL_SSC_TK 0x01
#define ATMEL_SSC_TF 0x02
@@ -50,4 +67,7 @@ at32_add_device_lcdc(unsigned int id, struct atmel_lcdfb_info *data,
struct platform_device *
at32_add_device_ssc(unsigned int id, unsigned int flags);
+struct platform_device *at32_add_device_ac97c(unsigned int id);
+struct platform_device *at32_add_device_abdac(unsigned int id);
+
#endif /* __ASM_ARCH_BOARD_H */
diff --git a/include/asm-avr32/arch-at32ap/portmux.h b/include/asm-avr32/arch-at32ap/portmux.h
index 9930871..135e034 100644
--- a/include/asm-avr32/arch-at32ap/portmux.h
+++ b/include/asm-avr32/arch-at32ap/portmux.h
@@ -19,10 +19,23 @@
#define AT32_GPIOF_OUTPUT 0x00000002 /* (OUT) Enable output driver */
#define AT32_GPIOF_HIGH 0x00000004 /* (OUT) Set output high */
#define AT32_GPIOF_DEGLITCH 0x00000008 /* (IN) Filter glitches */
+#define AT32_GPIOF_MULTIDRV 0x00000010 /* Enable multidriver option */
void at32_select_periph(unsigned int pin, unsigned int periph,
unsigned long flags);
void at32_select_gpio(unsigned int pin, unsigned long flags);
void at32_reserve_pin(unsigned int pin);
+#ifdef CONFIG_GPIO_DEV
+
+/* Gang allocators and accessors; used by the GPIO /dev driver */
+int at32_gpio_port_is_valid(unsigned int port);
+int at32_select_gpio_pins(unsigned int port, u32 pins, u32 oe_mask);
+void at32_deselect_pins(unsigned int port, u32 pins);
+
+u32 at32_gpio_get_value_multiple(unsigned int port, u32 pins);
+void at32_gpio_set_value_multiple(unsigned int port, u32 value, u32 mask);
+
+#endif /* CONFIG_GPIO_DEV */
+
#endif /* __ASM_ARCH_PORTMUX_H__ */
diff --git a/include/asm-avr32/arch-at32ap/smc.h b/include/asm-avr32/arch-at32ap/smc.h
index 07152b7..c98eea4 100644
--- a/include/asm-avr32/arch-at32ap/smc.h
+++ b/include/asm-avr32/arch-at32ap/smc.h
@@ -15,22 +15,50 @@
/*
* All timing parameters are in nanoseconds.
*/
+struct smc_timing {
+ /* Delay from address valid to assertion of given strobe */
+ int ncs_read_setup;
+ int nrd_setup;
+ int ncs_write_setup;
+ int nwe_setup;
+
+ /* Pulse length of given strobe */
+ int ncs_read_pulse;
+ int nrd_pulse;
+ int ncs_write_pulse;
+ int nwe_pulse;
+
+ /* Total cycle length of given operation */
+ int read_cycle;
+ int write_cycle;
+
+ /* Minimal recovery times, will extend cycle if needed */
+ int ncs_read_recover;
+ int nrd_recover;
+ int ncs_write_recover;
+ int nwe_recover;
+};
+
+/*
+ * All timing parameters are in clock cycles.
+ */
struct smc_config {
+
/* Delay from address valid to assertion of given strobe */
- u16 ncs_read_setup;
- u16 nrd_setup;
- u16 ncs_write_setup;
- u16 nwe_setup;
+ u8 ncs_read_setup;
+ u8 nrd_setup;
+ u8 ncs_write_setup;
+ u8 nwe_setup;
/* Pulse length of given strobe */
- u16 ncs_read_pulse;
- u16 nrd_pulse;
- u16 ncs_write_pulse;
- u16 nwe_pulse;
+ u8 ncs_read_pulse;
+ u8 nrd_pulse;
+ u8 ncs_write_pulse;
+ u8 nwe_pulse;
/* Total cycle length of given operation */
- u16 read_cycle;
- u16 write_cycle;
+ u8 read_cycle;
+ u8 write_cycle;
/* Bus width in bytes */
u8 bus_width;
@@ -76,6 +104,9 @@ struct smc_config {
unsigned int tdf_mode:1;
};
+extern void smc_set_timing(struct smc_config *config,
+ const struct smc_timing *timing);
+
extern int smc_set_configuration(int cs, const struct smc_config *config);
extern struct smc_config *smc_get_configuration(int cs);
diff --git a/include/asm-avr32/dma-controller.h b/include/asm-avr32/dma-controller.h
new file mode 100644
index 0000000..56a4965
--- /dev/null
+++ b/include/asm-avr32/dma-controller.h
@@ -0,0 +1,166 @@
+/*
+ * Copyright (C) 2005-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __ASM_AVR32_DMA_CONTROLLER_H
+#define __ASM_AVR32_DMA_CONTROLLER_H
+
+#include <linux/device.h>
+
+#define DMA_DIR_MEM_TO_MEM 0x0000
+#define DMA_DIR_MEM_TO_PERIPH 0x0001
+#define DMA_DIR_PERIPH_TO_MEM 0x0002
+#define DMA_DIR_PERIPH_TO_PERIPH 0x0003
+
+#define DMA_WIDTH_8BIT 0
+#define DMA_WIDTH_16BIT 1
+#define DMA_WIDTH_32BIT 2
+
+struct dma_request {
+ struct dma_controller *dmac;
+ struct list_head list;
+
+ unsigned short channel;
+
+ void (*xfer_complete)(struct dma_request *req);
+ void (*block_complete)(struct dma_request *req);
+ void (*error)(struct dma_request *req);
+};
+
+struct dma_request_sg {
+ struct dma_request req;
+
+ int nr_sg;
+ struct scatterlist *sg;
+ unsigned long block_size;
+ unsigned int nr_blocks;
+
+ dma_addr_t data_reg;
+ unsigned short periph_id;
+
+ unsigned char direction;
+ unsigned char width;
+};
+#define to_dma_request_sg(_req) \
+ container_of(_req, struct dma_request_sg, req)
+
+struct dma_request_cyclic {
+ struct dma_request req;
+
+ int periods;
+ unsigned long buffer_size;
+
+ dma_addr_t buffer_start;
+ dma_addr_t data_reg;
+
+ unsigned short periph_id;
+ unsigned char direction;
+ unsigned char width;
+
+ void *dev_id;
+};
+#define to_dma_request_cyclic(_req) \
+ container_of(_req, struct dma_request_cyclic, req)
+
+struct dma_request_memcpy {
+ struct dma_request req;
+
+ dma_addr_t src_addr;
+ unsigned int src_width;
+ unsigned int src_stride;
+
+ dma_addr_t dst_addr;
+ unsigned int dst_width;
+ unsigned int dst_stride;
+
+ size_t length;
+
+ unsigned short src_reverse:1;
+ unsigned short dst_reverse:1;
+};
+#define to_dma_request_memcpy(_req) \
+ container_of(_req, struct dma_request_memcpy, req)
+
+struct dma_controller {
+ struct list_head list;
+ int id;
+ struct device *dev;
+
+ int (*alloc_channel)(struct dma_controller *dmac);
+ void (*release_channel)(struct dma_controller *dmac,
+ int channel);
+ int (*prepare_request_sg)(struct dma_controller *dmac,
+ struct dma_request_sg *req);
+ int (*prepare_request_cyclic)(struct dma_controller *dmac,
+ struct dma_request_cyclic *req);
+ int (*prepare_request_memcpy)(struct dma_controller *dmac,
+ struct dma_request_memcpy *req);
+ int (*start_request)(struct dma_controller *dmac,
+ unsigned int channel);
+ int (*stop_request)(struct dma_controller *dmac,
+ unsigned int channel);
+ dma_addr_t (*get_current_pos)(struct dma_controller *dmac,
+ unsigned int channel);
+};
+
+static inline int
+dma_alloc_channel(struct dma_controller *dmac)
+{
+ return dmac->alloc_channel(dmac);
+}
+
+static inline void
+dma_release_channel(struct dma_controller *dmac, int chan)
+{
+ dmac->release_channel(dmac, chan);
+}
+
+static inline int
+dma_prepare_request_sg(struct dma_controller *dmac,
+ struct dma_request_sg *req)
+{
+ return dmac->prepare_request_sg(dmac, req);
+}
+
+static inline int
+dma_prepare_request_cyclic(struct dma_controller *dmac,
+ struct dma_request_cyclic *req)
+{
+ return dmac->prepare_request_cyclic(dmac, req);
+}
+
+static inline int
+dma_prepare_request_memcpy(struct dma_controller *dmac,
+ struct dma_request_memcpy *req)
+{
+ return dmac->prepare_request_memcpy(dmac, req);
+}
+
+static inline int
+dma_start_request(struct dma_controller *dmac,
+ unsigned int channel)
+{
+ return dmac->start_request(dmac, channel);
+}
+
+static inline int
+dma_stop_request(struct dma_controller *dmac,
+ unsigned int channel)
+{
+ return dmac->stop_request(dmac, channel);
+}
+
+static inline dma_addr_t
+dma_get_current_pos(struct dma_controller *dmac,
+ unsigned int channel)
+{
+ return dmac->get_current_pos(dmac, channel);
+}
+
+extern int register_dma_controller(struct dma_controller *dmac);
+extern struct dma_controller *find_dma_controller(int id);
+
+#endif /* __ASM_AVR32_DMA_CONTROLLER_H */
diff --git a/include/asm-avr32/dma-mapping.h b/include/asm-avr32/dma-mapping.h
index 21bb60b..81e3426 100644
--- a/include/asm-avr32/dma-mapping.h
+++ b/include/asm-avr32/dma-mapping.h
@@ -264,7 +264,11 @@ static inline void
dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
size_t size, enum dma_data_direction direction)
{
- dma_cache_sync(dev, bus_to_virt(dma_handle), size, direction);
+ /*
+ * No need to do anything since the CPU isn't supposed to
+ * touch this memory after we flushed it at mapping- or
+ * sync-for-device time.
+ */
}
static inline void
@@ -309,12 +313,11 @@ static inline void
dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
int nents, enum dma_data_direction direction)
{
- int i;
-
- for (i = 0; i < nents; i++) {
- dma_cache_sync(dev, page_address(sg[i].page) + sg[i].offset,
- sg[i].length, direction);
- }
+ /*
+ * No need to do anything since the CPU isn't supposed to
+ * touch this memory after we flushed it at mapping- or
+ * sync-for-device time.
+ */
}
static inline void
diff --git a/include/asm-avr32/system.h b/include/asm-avr32/system.h
index a8236ba..dc2d527 100644
--- a/include/asm-avr32/system.h
+++ b/include/asm-avr32/system.h
@@ -73,11 +73,16 @@ extern struct task_struct *__switch_to(struct task_struct *,
extern void __xchg_called_with_bad_pointer(void);
-#ifdef __CHECKER__
-extern unsigned long __builtin_xchg(void *ptr, unsigned long x);
-#endif
+static inline unsigned long xchg_u32(u32 val, volatile u32 *m)
+{
+ u32 ret;
-#define xchg_u32(val, m) __builtin_xchg((void *)m, val)
+ asm volatile("xchg %[ret], %[m], %[val]"
+ : [ret] "=&r"(ret), "=m"(*m)
+ : "m"(*m), [m] "r"(m), [val] "r"(val)
+ : "memory");
+ return ret;
+}
static inline unsigned long __xchg(unsigned long x,
volatile void *ptr,
diff --git a/include/asm-avr32/unistd.h b/include/asm-avr32/unistd.h
index 3b4e35b..de09009 100644
--- a/include/asm-avr32/unistd.h
+++ b/include/asm-avr32/unistd.h
@@ -303,6 +303,19 @@
#ifdef __KERNEL__
#define NR_syscalls 282
+/* Old stuff */
+#define __IGNORE_uselib
+#define __IGNORE_mmap
+
+/* NUMA stuff */
+#define __IGNORE_mbind
+#define __IGNORE_get_mempolicy
+#define __IGNORE_set_mempolicy
+#define __IGNORE_migrate_pages
+#define __IGNORE_move_pages
+
+/* SMP stuff */
+#define __IGNORE_getcpu
#define __ARCH_WANT_IPC_PARSE_VERSION
#define __ARCH_WANT_STAT64
diff --git a/include/linux/atmel-ssc.h b/include/linux/atmel-ssc.h
new file mode 100644
index 0000000..0602339
--- /dev/null
+++ b/include/linux/atmel-ssc.h
@@ -0,0 +1,312 @@
+#ifndef __INCLUDE_ATMEL_SSC_H
+#define __INCLUDE_ATMEL_SSC_H
+
+#include <linux/platform_device.h>
+#include <linux/list.h>
+
+struct ssc_device {
+ struct list_head list;
+ void __iomem *regs;
+ struct platform_device *pdev;
+ struct clk *clk;
+ int user;
+ int irq;
+};
+
+struct ssc_device * __must_check ssc_request(unsigned int ssc_num);
+void ssc_free(struct ssc_device *ssc);
+
+/* SSC register offsets */
+
+/* SSC Control Register */
+#define SSC_CR 0x00000000
+#define SSC_CR_RXDIS_SIZE 1
+#define SSC_CR_RXDIS_OFFSET 1
+#define SSC_CR_RXEN_SIZE 1
+#define SSC_CR_RXEN_OFFSET 0
+#define SSC_CR_SWRST_SIZE 1
+#define SSC_CR_SWRST_OFFSET 15
+#define SSC_CR_TXDIS_SIZE 1
+#define SSC_CR_TXDIS_OFFSET 9
+#define SSC_CR_TXEN_SIZE 1
+#define SSC_CR_TXEN_OFFSET 8
+
+/* SSC Clock Mode Register */
+#define SSC_CMR 0x00000004
+#define SSC_CMR_DIV_SIZE 12
+#define SSC_CMR_DIV_OFFSET 0
+
+/* SSC Receive Clock Mode Register */
+#define SSC_RCMR 0x00000010
+#define SSC_RCMR_CKG_SIZE 2
+#define SSC_RCMR_CKG_OFFSET 6
+#define SSC_RCMR_CKI_SIZE 1
+#define SSC_RCMR_CKI_OFFSET 5
+#define SSC_RCMR_CKO_SIZE 3
+#define SSC_RCMR_CKO_OFFSET 2
+#define SSC_RCMR_CKS_SIZE 2
+#define SSC_RCMR_CKS_OFFSET 0
+#define SSC_RCMR_PERIOD_SIZE 8
+#define SSC_RCMR_PERIOD_OFFSET 24
+#define SSC_RCMR_START_SIZE 4
+#define SSC_RCMR_START_OFFSET 8
+#define SSC_RCMR_STOP_SIZE 1
+#define SSC_RCMR_STOP_OFFSET 12
+#define SSC_RCMR_STTDLY_SIZE 8
+#define SSC_RCMR_STTDLY_OFFSET 16
+
+/* SSC Receive Frame Mode Register */
+#define SSC_RFMR 0x00000014
+#define SSC_RFMR_DATLEN_SIZE 5
+#define SSC_RFMR_DATLEN_OFFSET 0
+#define SSC_RFMR_DATNB_SIZE 4
+#define SSC_RFMR_DATNB_OFFSET 8
+#define SSC_RFMR_FSEDGE_SIZE 1
+#define SSC_RFMR_FSEDGE_OFFSET 24
+#define SSC_RFMR_FSLEN_SIZE 4
+#define SSC_RFMR_FSLEN_OFFSET 16
+#define SSC_RFMR_FSOS_SIZE 4
+#define SSC_RFMR_FSOS_OFFSET 20
+#define SSC_RFMR_LOOP_SIZE 1
+#define SSC_RFMR_LOOP_OFFSET 5
+#define SSC_RFMR_MSBF_SIZE 1
+#define SSC_RFMR_MSBF_OFFSET 7
+
+/* SSC Transmit Clock Mode Register */
+#define SSC_TCMR 0x00000018
+#define SSC_TCMR_CKG_SIZE 2
+#define SSC_TCMR_CKG_OFFSET 6
+#define SSC_TCMR_CKI_SIZE 1
+#define SSC_TCMR_CKI_OFFSET 5
+#define SSC_TCMR_CKO_SIZE 3
+#define SSC_TCMR_CKO_OFFSET 2
+#define SSC_TCMR_CKS_SIZE 2
+#define SSC_TCMR_CKS_OFFSET 0
+#define SSC_TCMR_PERIOD_SIZE 8
+#define SSC_TCMR_PERIOD_OFFSET 24
+#define SSC_TCMR_START_SIZE 4
+#define SSC_TCMR_START_OFFSET 8
+#define SSC_TCMR_STTDLY_SIZE 8
+#define SSC_TCMR_STTDLY_OFFSET 16
+
+/* SSC Transmit Frame Mode Register */
+#define SSC_TFMR 0x0000001c
+#define SSC_TFMR_DATDEF_SIZE 1
+#define SSC_TFMR_DATDEF_OFFSET 5
+#define SSC_TFMR_DATLEN_SIZE 5
+#define SSC_TFMR_DATLEN_OFFSET 0
+#define SSC_TFMR_DATNB_SIZE 4
+#define SSC_TFMR_DATNB_OFFSET 8
+#define SSC_TFMR_FSDEN_SIZE 1
+#define SSC_TFMR_FSDEN_OFFSET 23
+#define SSC_TFMR_FSEDGE_SIZE 1
+#define SSC_TFMR_FSEDGE_OFFSET 24
+#define SSC_TFMR_FSLEN_SIZE 4
+#define SSC_TFMR_FSLEN_OFFSET 16
+#define SSC_TFMR_FSOS_SIZE 3
+#define SSC_TFMR_FSOS_OFFSET 20
+#define SSC_TFMR_MSBF_SIZE 1
+#define SSC_TFMR_MSBF_OFFSET 7
+
+/* SSC Receive Hold Register */
+#define SSC_RHR 0x00000020
+#define SSC_RHR_RDAT_SIZE 32
+#define SSC_RHR_RDAT_OFFSET 0
+
+/* SSC Transmit Hold Register */
+#define SSC_THR 0x00000024
+#define SSC_THR_TDAT_SIZE 32
+#define SSC_THR_TDAT_OFFSET 0
+
+/* SSC Receive Sync. Holding Register */
+#define SSC_RSHR 0x00000030
+#define SSC_RSHR_RSDAT_SIZE 16
+#define SSC_RSHR_RSDAT_OFFSET 0
+
+/* SSC Transmit Sync. Holding Register */
+#define SSC_TSHR 0x00000034
+#define SSC_TSHR_TSDAT_SIZE 16
+#define SSC_TSHR_RSDAT_OFFSET 0
+
+/* SSC Receive Compare 0 Register */
+#define SSC_RC0R 0x00000038
+#define SSC_RC0R_CP0_SIZE 16
+#define SSC_RC0R_CP0_OFFSET 0
+
+/* SSC Receive Compare 1 Register */
+#define SSC_RC1R 0x0000003c
+#define SSC_RC1R_CP1_SIZE 16
+#define SSC_RC1R_CP1_OFFSET 0
+
+/* SSC Status Register */
+#define SSC_SR 0x00000040
+#define SSC_SR_CP0_SIZE 1
+#define SSC_SR_CP0_OFFSET 8
+#define SSC_SR_CP1_SIZE 1
+#define SSC_SR_CP1_OFFSET 9
+#define SSC_SR_ENDRX_SIZE 1
+#define SSC_SR_ENDRX_OFFSET 6
+#define SSC_SR_ENDTX_SIZE 1
+#define SSC_SR_ENDTX_OFFSET 2
+#define SSC_SR_OVRUN_SIZE 1
+#define SSC_SR_OVRUN_OFFSET 5
+#define SSC_SR_RXBUFF_SIZE 1
+#define SSC_SR_RXBUFF_OFFSET 7
+#define SSC_SR_RXEN_SIZE 1
+#define SSC_SR_RXEN_OFFSET 17
+#define SSC_SR_RXRDY_SIZE 1
+#define SSC_SR_RXRDY_OFFSET 4
+#define SSC_SR_RXSYN_SIZE 1
+#define SSC_SR_RXSYN_OFFSET 11
+#define SSC_SR_TXBUFE_SIZE 1
+#define SSC_SR_TXBUFE_OFFSET 3
+#define SSC_SR_TXEMPTY_SIZE 1
+#define SSC_SR_TXEMPTY_OFFSET 1
+#define SSC_SR_TXEN_SIZE 1
+#define SSC_SR_TXEN_OFFSET 16
+#define SSC_SR_TXRDY_SIZE 1
+#define SSC_SR_TXRDY_OFFSET 0
+#define SSC_SR_TXSYN_SIZE 1
+#define SSC_SR_TXSYN_OFFSET 10
+
+/* SSC Interrupt Enable Register */
+#define SSC_IER 0x00000044
+#define SSC_IER_CP0_SIZE 1
+#define SSC_IER_CP0_OFFSET 8
+#define SSC_IER_CP1_SIZE 1
+#define SSC_IER_CP1_OFFSET 9
+#define SSC_IER_ENDRX_SIZE 1
+#define SSC_IER_ENDRX_OFFSET 6
+#define SSC_IER_ENDTX_SIZE 1
+#define SSC_IER_ENDTX_OFFSET 2
+#define SSC_IER_OVRUN_SIZE 1
+#define SSC_IER_OVRUN_OFFSET 5
+#define SSC_IER_RXBUFF_SIZE 1
+#define SSC_IER_RXBUFF_OFFSET 7
+#define SSC_IER_RXRDY_SIZE 1
+#define SSC_IER_RXRDY_OFFSET 4
+#define SSC_IER_RXSYN_SIZE 1
+#define SSC_IER_RXSYN_OFFSET 11
+#define SSC_IER_TXBUFE_SIZE 1
+#define SSC_IER_TXBUFE_OFFSET 3
+#define SSC_IER_TXEMPTY_SIZE 1
+#define SSC_IER_TXEMPTY_OFFSET 1
+#define SSC_IER_TXRDY_SIZE 1
+#define SSC_IER_TXRDY_OFFSET 0
+#define SSC_IER_TXSYN_SIZE 1
+#define SSC_IER_TXSYN_OFFSET 10
+
+/* SSC Interrupt Disable Register */
+#define SSC_IDR 0x00000048
+#define SSC_IDR_CP0_SIZE 1
+#define SSC_IDR_CP0_OFFSET 8
+#define SSC_IDR_CP1_SIZE 1
+#define SSC_IDR_CP1_OFFSET 9
+#define SSC_IDR_ENDRX_SIZE 1
+#define SSC_IDR_ENDRX_OFFSET 6
+#define SSC_IDR_ENDTX_SIZE 1
+#define SSC_IDR_ENDTX_OFFSET 2
+#define SSC_IDR_OVRUN_SIZE 1
+#define SSC_IDR_OVRUN_OFFSET 5
+#define SSC_IDR_RXBUFF_SIZE 1
+#define SSC_IDR_RXBUFF_OFFSET 7
+#define SSC_IDR_RXRDY_SIZE 1
+#define SSC_IDR_RXRDY_OFFSET 4
+#define SSC_IDR_RXSYN_SIZE 1
+#define SSC_IDR_RXSYN_OFFSET 11
+#define SSC_IDR_TXBUFE_SIZE 1
+#define SSC_IDR_TXBUFE_OFFSET 3
+#define SSC_IDR_TXEMPTY_SIZE 1
+#define SSC_IDR_TXEMPTY_OFFSET 1
+#define SSC_IDR_TXRDY_SIZE 1
+#define SSC_IDR_TXRDY_OFFSET 0
+#define SSC_IDR_TXSYN_SIZE 1
+#define SSC_IDR_TXSYN_OFFSET 10
+
+/* SSC Interrupt Mask Register */
+#define SSC_IMR 0x0000004c
+#define SSC_IMR_CP0_SIZE 1
+#define SSC_IMR_CP0_OFFSET 8
+#define SSC_IMR_CP1_SIZE 1
+#define SSC_IMR_CP1_OFFSET 9
+#define SSC_IMR_ENDRX_SIZE 1
+#define SSC_IMR_ENDRX_OFFSET 6
+#define SSC_IMR_ENDTX_SIZE 1
+#define SSC_IMR_ENDTX_OFFSET 2
+#define SSC_IMR_OVRUN_SIZE 1
+#define SSC_IMR_OVRUN_OFFSET 5
+#define SSC_IMR_RXBUFF_SIZE 1
+#define SSC_IMR_RXBUFF_OFFSET 7
+#define SSC_IMR_RXRDY_SIZE 1
+#define SSC_IMR_RXRDY_OFFSET 4
+#define SSC_IMR_RXSYN_SIZE 1
+#define SSC_IMR_RXSYN_OFFSET 11
+#define SSC_IMR_TXBUFE_SIZE 1
+#define SSC_IMR_TXBUFE_OFFSET 3
+#define SSC_IMR_TXEMPTY_SIZE 1
+#define SSC_IMR_TXEMPTY_OFFSET 1
+#define SSC_IMR_TXRDY_SIZE 1
+#define SSC_IMR_TXRDY_OFFSET 0
+#define SSC_IMR_TXSYN_SIZE 1
+#define SSC_IMR_TXSYN_OFFSET 10
+
+/* SSC PDC Receive Pointer Register */
+#define SSC_PDC_RPR 0x00000100
+
+/* SSC PDC Receive Counter Register */
+#define SSC_PDC_RCR 0x00000104
+
+/* SSC PDC Transmit Pointer Register */
+#define SSC_PDC_TPR 0x00000108
+
+/* SSC PDC Receive Next Pointer Register */
+#define SSC_PDC_RNPR 0x00000110
+
+/* SSC PDC Receive Next Counter Register */
+#define SSC_PDC_RNCR 0x00000114
+
+/* SSC PDC Transmit Counter Register */
+#define SSC_PDC_TCR 0x0000010c
+
+/* SSC PDC Transmit Next Pointer Register */
+#define SSC_PDC_TNPR 0x00000118
+
+/* SSC PDC Transmit Next Counter Register */
+#define SSC_PDC_TNCR 0x0000011c
+
+/* SSC PDC Transfer Control Register */
+#define SSC_PDC_PTCR 0x00000120
+#define SSC_PDC_PTCR_RXTDIS_SIZE 1
+#define SSC_PDC_PTCR_RXTDIS_OFFSET 1
+#define SSC_PDC_PTCR_RXTEN_SIZE 1
+#define SSC_PDC_PTCR_RXTEN_OFFSET 0
+#define SSC_PDC_PTCR_TXTDIS_SIZE 1
+#define SSC_PDC_PTCR_TXTDIS_OFFSET 9
+#define SSC_PDC_PTCR_TXTEN_SIZE 1
+#define SSC_PDC_PTCR_TXTEN_OFFSET 8
+
+/* SSC PDC Transfer Status Register */
+#define SSC_PDC_PTSR 0x00000124
+#define SSC_PDC_PTSR_RXTEN_SIZE 1
+#define SSC_PDC_PTSR_RXTEN_OFFSET 0
+#define SSC_PDC_PTSR_TXTEN_SIZE 1
+#define SSC_PDC_PTSR_TXTEN_OFFSET 8
+
+/* Bit manipulation macros */
+#define SSC_BIT(name) \
+ (1 << SSC_##name##_OFFSET)
+#define SSC_BF(name, value) \
+ (((value) & ((1 << SSC_##name##_SIZE) - 1)) \
+ << SSC_##name##_OFFSET)
+#define SSC_BFEXT(name, value) \
+ (((value) >> SSC_##name##_OFFSET) \
+ & ((1 << SSC_##name##_SIZE) - 1))
+#define SSC_BFINS(name, value, old) \
+ (((old) & ~(((1 << SSC_##name##_SIZE) - 1) \
+ << SSC_##name##_OFFSET)) | SSC_BF(name, value))
+
+/* Register access macros */
+#define ssc_readl(base, reg) __raw_readl(base + SSC_##reg)
+#define ssc_writel(base, reg, value) __raw_writel((value), base + SSC_##reg)
+
+#endif /* __INCLUDE_ATMEL_SSC_H */
diff --git a/include/linux/spi/at73c213.h b/include/linux/spi/at73c213.h
new file mode 100644
index 0000000..0f20a70
--- /dev/null
+++ b/include/linux/spi/at73c213.h
@@ -0,0 +1,25 @@
+/*
+ * Board-specific data used to set up AT73c213 audio DAC driver.
+ */
+
+#ifndef __LINUX_SPI_AT73C213_H
+#define __LINUX_SPI_AT73C213_H
+
+/**
+ * at73c213_board_info - how the external DAC is wired to the device.
+ *
+ * @ssc_id: SSC platform_driver id the DAC shall use to stream the audio.
+ * @dac_clk: the external clock used to provide master clock to the DAC.
+ * @shortname: a short discription for the DAC, seen by userspace tools.
+ *
+ * This struct contains the configuration of the hardware connection to the
+ * external DAC. The DAC needs a master clock and a I2S audio stream. It also
+ * provides a name which is used to identify it in userspace tools.
+ */
+struct at73c213_board_info {
+ int ssc_id;
+ struct clk *dac_clk;
+ char shortname[32];
+};
+
+#endif /* __LINUX_SPI_AT73C213_H */
diff --git a/scripts/checkstack.pl b/scripts/checkstack.pl
index f7844f6..6631586 100755
--- a/scripts/checkstack.pl
+++ b/scripts/checkstack.pl
@@ -12,6 +12,7 @@
# sh64 port by Paul Mundt
# Random bits by Matt Mackall <mpm@selenic.com>
# M68k port by Geert Uytterhoeven and Andreas Schwab
+# AVR32 port by Haavard Skinnemoen <hskinnemoen@atmel.com>
#
# Usage:
# objdump -d vmlinux | stackcheck.pl [arch]
@@ -37,6 +38,10 @@ my (@stack, $re, $x, $xs);
if ($arch eq 'arm') {
#c0008ffc: e24dd064 sub sp, sp, #100 ; 0x64
$re = qr/.*sub.*sp, sp, #(([0-9]{2}|[3-9])[0-9]{2})/o;
+ } elsif ($arch eq 'avr32') {
+ #8000008a: 20 1d sub sp,4
+ #80000ca8: fa cd 05 b0 sub sp,sp,1456
+ $re = qr/^.*sub.*sp.*,([0-9]{1,8})/o;
} elsif ($arch =~ /^i[3456]86$/) {
#c0105234: 81 ec ac 05 00 00 sub $0x5ac,%esp
$re = qr/^.*[as][du][db] \$(0x$x{1,8}),\%esp$/o;
diff --git a/sound/Kconfig b/sound/Kconfig
index e48b9b3..29a9979 100644
--- a/sound/Kconfig
+++ b/sound/Kconfig
@@ -63,6 +63,12 @@ source "sound/aoa/Kconfig"
source "sound/arm/Kconfig"
+source "sound/avr32/Kconfig"
+
+if SPI
+source "sound/spi/Kconfig"
+endif
+
source "sound/mips/Kconfig"
source "sound/sh/Kconfig"
diff --git a/sound/Makefile b/sound/Makefile
index 3ead922..e655df7 100644
--- a/sound/Makefile
+++ b/sound/Makefile
@@ -5,7 +5,8 @@ obj-$(CONFIG_SOUND) += soundcore.o
obj-$(CONFIG_SOUND_PRIME) += sound_firmware.o
obj-$(CONFIG_SOUND_PRIME) += oss/
obj-$(CONFIG_DMASOUND) += oss/
-obj-$(CONFIG_SND) += core/ i2c/ drivers/ isa/ pci/ ppc/ arm/ sh/ synth/ usb/ sparc/ parisc/ pcmcia/ mips/ soc/
+obj-$(CONFIG_SND) += core/ i2c/ drivers/ isa/ pci/ ppc/ arm/ avr32/ sh/ synth/ usb/ sparc/ spi/ parisc/ pcmcia/ mips/ soc/
+
obj-$(CONFIG_SND_AOA) += aoa/
# This one must be compilable even if sound is configured out
diff --git a/sound/avr32/Kconfig b/sound/avr32/Kconfig
new file mode 100644
index 0000000..17d1d91
--- /dev/null
+++ b/sound/avr32/Kconfig
@@ -0,0 +1,11 @@
+menu "AVR32 devices"
+ depends on SND != n && AVR32
+
+config SND_ATMEL_AC97
+ tristate "Atmel AC97 Controller Driver"
+ select SND_PCM
+ select SND_AC97_CODEC
+ help
+ ALSA sound driver for the Atmel AC97 controller.
+
+endmenu
diff --git a/sound/avr32/Makefile b/sound/avr32/Makefile
new file mode 100644
index 0000000..5d87d0e
--- /dev/null
+++ b/sound/avr32/Makefile
@@ -0,0 +1,3 @@
+snd-atmel-ac97-objs := ac97c.o
+
+obj-$(CONFIG_SND_ATMEL_AC97) += snd-atmel-ac97.o
diff --git a/sound/avr32/ac97c.c b/sound/avr32/ac97c.c
new file mode 100644
index 0000000..0ec0b1c
--- /dev/null
+++ b/sound/avr32/ac97c.c
@@ -0,0 +1,914 @@
+/*
+ * Driver for the Atmel AC97 controller
+ *
+ * Copyright (C) 2005-2007 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/mutex.h>
+#include <linux/io.h>
+
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/ac97_codec.h>
+#include <sound/memalloc.h>
+
+#include <asm/dma-controller.h>
+
+#include "ac97c.h"
+
+/* Serialize access to opened */
+static DEFINE_MUTEX(opened_mutex);
+
+struct atmel_ac97_dma_info {
+ struct dma_request_cyclic req_tx;
+ struct dma_request_cyclic req_rx;
+ unsigned short rx_periph_id;
+ unsigned short tx_periph_id;
+};
+
+struct atmel_ac97 {
+ /* Serialize access to opened */
+ spinlock_t lock;
+ void __iomem *regs;
+ struct snd_pcm_substream *playback_substream;
+ struct snd_pcm_substream *capture_substream;
+ struct snd_card *card;
+ struct snd_pcm *pcm;
+ struct snd_ac97 *ac97;
+ struct snd_ac97_bus *ac97_bus;
+ int opened;
+ int period;
+ u64 cur_format;
+ unsigned int cur_rate;
+ struct clk *mck;
+ struct platform_device *pdev;
+ struct atmel_ac97_dma_info dma;
+};
+
+#define get_chip(card) ((struct atmel_ac97 *)(card)->private_data)
+
+#define ac97c_writel(chip, reg, val) \
+ __raw_writel((val), (chip)->regs + AC97C_##reg)
+#define ac97c_readl(chip, reg) \
+ __raw_readl((chip)->regs + AC97C_##reg)
+
+/*
+ * PCM part
+ */
+static struct snd_pcm_hardware snd_atmel_ac97_playback_hw = {
+ .info = (SNDRV_PCM_INFO_INTERLEAVED
+ | SNDRV_PCM_INFO_MMAP
+ | SNDRV_PCM_INFO_MMAP_VALID
+ | SNDRV_PCM_INFO_BLOCK_TRANSFER
+ | SNDRV_PCM_INFO_JOINT_DUPLEX),
+ .formats = (SNDRV_PCM_FMTBIT_S16_BE
+ | SNDRV_PCM_FMTBIT_S16_LE),
+ .rates = (SNDRV_PCM_RATE_CONTINUOUS),
+ .rate_min = 4000,
+ .rate_max = 48000,
+ .channels_min = 1,
+ .channels_max = 6,
+ .buffer_bytes_max = 64*1024,
+ .period_bytes_min = 512,
+ .period_bytes_max = 4095,
+ .periods_min = 8,
+ .periods_max = 1024,
+};
+
+static struct snd_pcm_hardware snd_atmel_ac97_capture_hw = {
+ .info = (SNDRV_PCM_INFO_INTERLEAVED
+ | SNDRV_PCM_INFO_MMAP
+ | SNDRV_PCM_INFO_MMAP_VALID
+ | SNDRV_PCM_INFO_BLOCK_TRANSFER
+ | SNDRV_PCM_INFO_JOINT_DUPLEX),
+ .formats = (SNDRV_PCM_FMTBIT_S16_BE
+ | SNDRV_PCM_FMTBIT_S16_LE),
+ .rates = (SNDRV_PCM_RATE_CONTINUOUS),
+ .rate_min = 4000,
+ .rate_max = 48000,
+ .channels_min = 1,
+ .channels_max = 2,
+ .buffer_bytes_max = 64*1024,
+ .period_bytes_min = 512,
+ .period_bytes_max = 4095,
+ .periods_min = 8,
+ .periods_max = 1024,
+};
+
+/*
+ * PCM functions
+ */
+static int
+snd_atmel_ac97_playback_open(struct snd_pcm_substream *substream)
+{
+ struct atmel_ac97 *chip = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+
+ mutex_lock(&opened_mutex);
+ chip->opened++;
+ runtime->hw = snd_atmel_ac97_playback_hw;
+ if (chip->cur_rate) {
+ runtime->hw.rate_min = chip->cur_rate;
+ runtime->hw.rate_max = chip->cur_rate;
+ }
+ if (chip->cur_format)
+ runtime->hw.formats = (1ULL << chip->cur_format);
+ mutex_unlock(&opened_mutex);
+ chip->playback_substream = substream;
+ chip->period = 0;
+ return 0;
+}
+
+static int
+snd_atmel_ac97_capture_open(struct snd_pcm_substream *substream)
+{
+ struct atmel_ac97 *chip = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+
+ mutex_lock(&opened_mutex);
+ chip->opened++;
+ runtime->hw = snd_atmel_ac97_capture_hw;
+ if (chip->cur_rate) {
+ runtime->hw.rate_min = chip->cur_rate;
+ runtime->hw.rate_max = chip->cur_rate;
+ }
+ if (chip->cur_format)
+ runtime->hw.formats = (1ULL << chip->cur_format);
+ mutex_unlock(&opened_mutex);
+ chip->capture_substream = substream;
+ chip->period = 0;
+ return 0;
+}
+
+static int snd_atmel_ac97_playback_close(struct snd_pcm_substream *substream)
+{
+ struct atmel_ac97 *chip = snd_pcm_substream_chip(substream);
+ mutex_lock(&opened_mutex);
+ chip->opened--;
+ if (!chip->opened) {
+ chip->cur_rate = 0;
+ chip->cur_format = 0;
+ }
+ mutex_unlock(&opened_mutex);
+ return 0;
+}
+
+static int snd_atmel_ac97_capture_close(struct snd_pcm_substream *substream)
+{
+ struct atmel_ac97 *chip = snd_pcm_substream_chip(substream);
+ mutex_lock(&opened_mutex);
+ chip->opened--;
+ if (!chip->opened) {
+ chip->cur_rate = 0;
+ chip->cur_format = 0;
+ }
+ mutex_unlock(&opened_mutex);
+ return 0;
+}
+
+static int
+snd_atmel_ac97_playback_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ struct atmel_ac97 *chip = snd_pcm_substream_chip(substream);
+ int err;
+
+ err = snd_pcm_lib_malloc_pages(substream,
+ params_buffer_bytes(hw_params));
+ if (err < 0)
+ return err;
+
+ /* Set restrictions to params */
+ mutex_lock(&opened_mutex);
+ chip->cur_rate = params_rate(hw_params);
+ chip->cur_format = params_format(hw_params);
+ mutex_unlock(&opened_mutex);
+
+ return 0;
+}
+
+static int
+snd_atmel_ac97_capture_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ struct atmel_ac97 *chip = snd_pcm_substream_chip(substream);
+ int err;
+
+ err = snd_pcm_lib_malloc_pages(substream,
+ params_buffer_bytes(hw_params));
+ if (err < 0)
+ return err;
+
+ /* Set restrictions to params */
+ mutex_lock(&opened_mutex);
+ chip->cur_rate = params_rate(hw_params);
+ chip->cur_format = params_format(hw_params);
+ mutex_unlock(&opened_mutex);
+
+ return 0;
+}
+
+static int snd_atmel_ac97_playback_hw_free(struct snd_pcm_substream *substream)
+{
+ return snd_pcm_lib_free_pages(substream);
+}
+
+static int snd_atmel_ac97_capture_hw_free(struct snd_pcm_substream *substream)
+{
+
+ return snd_pcm_lib_free_pages(substream);
+}
+
+static int snd_atmel_ac97_playback_prepare(struct snd_pcm_substream *substream)
+{
+ struct atmel_ac97 *chip = snd_pcm_substream_chip(substream);
+ struct platform_device *pdev = chip->pdev;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ int block_size = frames_to_bytes(runtime, runtime->period_size);
+ unsigned long word = 0;
+ unsigned long buffer_size = 0;
+
+ dma_sync_single_for_device(&pdev->dev, runtime->dma_addr,
+ block_size * 2, DMA_TO_DEVICE);
+
+ /* Assign slots to channels */
+ switch (substream->runtime->channels) {
+ case 1:
+ word |= AC97C_CH_ASSIGN(PCM_LEFT, A);
+ break;
+ case 2:
+ /* Assign Left and Right slot to Channel A */
+ word |= AC97C_CH_ASSIGN(PCM_LEFT, A)
+ | AC97C_CH_ASSIGN(PCM_RIGHT, A);
+ break;
+ default:
+ /* TODO: support more than two channels */
+ return -EINVAL;
+ break;
+ }
+ ac97c_writel(chip, OCA, word);
+
+ /* Configure sample format and size */
+ word = AC97C_CMR_PDCEN | AC97C_CMR_SIZE_16;
+
+ switch (runtime->format) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ word |= AC97C_CMR_CEM_LITTLE;
+ break;
+ case SNDRV_PCM_FORMAT_S16_BE: /* fall through */
+ default:
+ word &= ~AC97C_CMR_CEM_LITTLE;
+ break;
+ }
+
+ ac97c_writel(chip, CAMR, word);
+
+ /* Set variable rate if needed */
+ if (runtime->rate != 48000) {
+ word = ac97c_readl(chip, MR);
+ word |= AC97C_MR_VRA;
+ ac97c_writel(chip, MR, word);
+ } else {
+ /* Clear Variable Rate Bit */
+ word = ac97c_readl(chip, MR);
+ word &= ~AC97C_MR_VRA;
+ ac97c_writel(chip, MR, word);
+ }
+
+ /* Set rate */
+ snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
+
+ buffer_size = frames_to_bytes(runtime, runtime->period_size) *
+ runtime->periods;
+
+ chip->dma.req_tx.buffer_size = buffer_size;
+ chip->dma.req_tx.periods = runtime->periods;
+
+ BUG_ON(chip->dma.req_tx.buffer_size !=
+ (chip->dma.req_tx.periods *
+ frames_to_bytes(runtime, runtime->period_size)));
+
+ chip->dma.req_tx.buffer_start = runtime->dma_addr;
+ chip->dma.req_tx.data_reg = (dma_addr_t)(chip->regs + AC97C_CATHR + 2);
+ chip->dma.req_tx.periph_id = chip->dma.tx_periph_id;
+ chip->dma.req_tx.direction = DMA_DIR_MEM_TO_PERIPH;
+ chip->dma.req_tx.width = DMA_WIDTH_16BIT;
+ chip->dma.req_tx.dev_id = chip;
+
+ return 0;
+}
+
+static int snd_atmel_ac97_capture_prepare(struct snd_pcm_substream *substream)
+{
+ struct atmel_ac97 *chip = snd_pcm_substream_chip(substream);
+ struct platform_device *pdev = chip->pdev;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ int block_size = frames_to_bytes(runtime, runtime->period_size);
+ unsigned long word = 0;
+ unsigned long buffer_size = 0;
+
+ dma_sync_single_for_device(&pdev->dev, runtime->dma_addr,
+ block_size * 2, DMA_FROM_DEVICE);
+
+ /* Assign slots to channels */
+ switch (substream->runtime->channels) {
+ case 1:
+ word |= AC97C_CH_ASSIGN(PCM_LEFT, A);
+ break;
+ case 2:
+ /* Assign Left and Right slot to Channel A */
+ word |= AC97C_CH_ASSIGN(PCM_LEFT, A)
+ | AC97C_CH_ASSIGN(PCM_RIGHT, A);
+ break;
+ default:
+ /* TODO: support more than two channels */
+ return -EINVAL;
+ break;
+ }
+ ac97c_writel(chip, ICA, word);
+
+ /* Configure sample format and size */
+ word = AC97C_CMR_PDCEN | AC97C_CMR_SIZE_16;
+
+ switch (runtime->format) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ word |= AC97C_CMR_CEM_LITTLE;
+ break;
+ case SNDRV_PCM_FORMAT_S16_BE:
+ default:
+ word &= ~(AC97C_CMR_CEM_LITTLE);
+ break;
+ }
+
+ ac97c_writel(chip, CAMR, word);
+
+ /* Set variable rate if needed */
+ if (runtime->rate != 48000) {
+ word = ac97c_readl(chip, MR);
+ word |= AC97C_MR_VRA;
+ ac97c_writel(chip, MR, word);
+ } else {
+ /* Clear Variable Rate Bit */
+ word = ac97c_readl(chip, MR);
+ word &= ~(AC97C_MR_VRA);
+ ac97c_writel(chip, MR, word);
+ }
+
+ /* Set rate */
+ snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
+
+ buffer_size = frames_to_bytes(runtime, runtime->period_size) *
+ runtime->periods;
+
+ chip->dma.req_rx.buffer_size = buffer_size;
+ chip->dma.req_rx.periods = runtime->periods;
+
+ BUG_ON(chip->dma.req_rx.buffer_size !=
+ (chip->dma.req_rx.periods *
+ frames_to_bytes(runtime, runtime->period_size)));
+
+ chip->dma.req_rx.buffer_start = runtime->dma_addr;
+ chip->dma.req_rx.data_reg = (dma_addr_t)(chip->regs + AC97C_CARHR + 2);
+ chip->dma.req_rx.periph_id = chip->dma.rx_periph_id;
+ chip->dma.req_rx.direction = DMA_DIR_PERIPH_TO_MEM;
+ chip->dma.req_rx.width = DMA_WIDTH_16BIT;
+ chip->dma.req_rx.dev_id = chip;
+
+ return 0;
+}
+
+ static int
+snd_atmel_ac97_playback_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ struct atmel_ac97 *chip = snd_pcm_substream_chip(substream);
+ unsigned long camr;
+ int flags, err = 0;
+
+ spin_lock_irqsave(&chip->lock, flags);
+ camr = ac97c_readl(chip, CAMR);
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ err = dma_prepare_request_cyclic(chip->dma.req_tx.req.dmac,
+ &chip->dma.req_tx);
+ dma_start_request(chip->dma.req_tx.req.dmac,
+ chip->dma.req_tx.req.channel);
+ camr |= AC97C_CMR_CENA;
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ err = dma_stop_request(chip->dma.req_tx.req.dmac,
+ chip->dma.req_tx.req.channel);
+ if (chip->opened <= 1)
+ camr &= ~AC97C_CMR_CENA;
+ break;
+ default:
+ err = -EINVAL;
+ break;
+ }
+
+ ac97c_writel(chip, CAMR, camr);
+
+ spin_unlock_irqrestore(&chip->lock, flags);
+ return err;
+}
+
+ static int
+snd_atmel_ac97_capture_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ struct atmel_ac97 *chip = snd_pcm_substream_chip(substream);
+ unsigned long camr;
+ int flags, err = 0;
+
+ spin_lock_irqsave(&chip->lock, flags);
+ camr = ac97c_readl(chip, CAMR);
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ err = dma_prepare_request_cyclic(chip->dma.req_rx.req.dmac,
+ &chip->dma.req_rx);
+ dma_start_request(chip->dma.req_rx.req.dmac,
+ chip->dma.req_rx.req.channel);
+ camr |= AC97C_CMR_CENA;
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ err = dma_stop_request(chip->dma.req_rx.req.dmac,
+ chip->dma.req_rx.req.channel);
+ mutex_lock(&opened_mutex);
+ if (chip->opened <= 1)
+ camr &= ~AC97C_CMR_CENA;
+ mutex_unlock(&opened_mutex);
+ break;
+ default:
+ err = -EINVAL;
+ break;
+ }
+
+ ac97c_writel(chip, CAMR, camr);
+
+ spin_unlock_irqrestore(&chip->lock, flags);
+ return err;
+}
+
+ static snd_pcm_uframes_t
+snd_atmel_ac97_playback_pointer(struct snd_pcm_substream *substream)
+{
+ struct atmel_ac97 *chip = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ snd_pcm_uframes_t pos;
+ unsigned long bytes;
+
+ bytes = (dma_get_current_pos
+ (chip->dma.req_tx.req.dmac,
+ chip->dma.req_tx.req.channel) - runtime->dma_addr);
+ pos = bytes_to_frames(runtime, bytes);
+ if (pos >= runtime->buffer_size)
+ pos -= runtime->buffer_size;
+
+ return pos;
+}
+
+ static snd_pcm_uframes_t
+snd_atmel_ac97_capture_pointer(struct snd_pcm_substream *substream)
+{
+ struct atmel_ac97 *chip = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ snd_pcm_uframes_t pos;
+ unsigned long bytes;
+
+ bytes = (dma_get_current_pos
+ (chip->dma.req_rx.req.dmac,
+ chip->dma.req_rx.req.channel)
+ - runtime->dma_addr);
+ pos = bytes_to_frames(runtime, bytes);
+ if (pos >= runtime->buffer_size)
+ pos -= runtime->buffer_size;
+
+
+ return pos;
+}
+
+static struct snd_pcm_ops atmel_ac97_playback_ops = {
+ .open = snd_atmel_ac97_playback_open,
+ .close = snd_atmel_ac97_playback_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_atmel_ac97_playback_hw_params,
+ .hw_free = snd_atmel_ac97_playback_hw_free,
+ .prepare = snd_atmel_ac97_playback_prepare,
+ .trigger = snd_atmel_ac97_playback_trigger,
+ .pointer = snd_atmel_ac97_playback_pointer,
+};
+
+static struct snd_pcm_ops atmel_ac97_capture_ops = {
+ .open = snd_atmel_ac97_capture_open,
+ .close = snd_atmel_ac97_capture_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_atmel_ac97_capture_hw_params,
+ .hw_free = snd_atmel_ac97_capture_hw_free,
+ .prepare = snd_atmel_ac97_capture_prepare,
+ .trigger = snd_atmel_ac97_capture_trigger,
+ .pointer = snd_atmel_ac97_capture_pointer,
+};
+
+static struct ac97_pcm atmel_ac97_pcm_defs[] __devinitdata = {
+ /* Playback */
+ {
+ .exclusive = 1,
+ .r = { {
+ .slots = ((1 << AC97_SLOT_PCM_LEFT)
+ | (1 << AC97_SLOT_PCM_RIGHT)
+ | (1 << AC97_SLOT_PCM_CENTER)
+ | (1 << AC97_SLOT_PCM_SLEFT)
+ | (1 << AC97_SLOT_PCM_SRIGHT)
+ | (1 << AC97_SLOT_LFE)),
+ } }
+ },
+ /* PCM in */
+ {
+ .stream = 1,
+ .exclusive = 1,
+ .r = { {
+ .slots = ((1 << AC97_SLOT_PCM_LEFT)
+ | (1 << AC97_SLOT_PCM_RIGHT)),
+ } }
+ },
+ /* Mic in */
+ {
+ .stream = 1,
+ .exclusive = 1,
+ .r = { {
+ .slots = (1<<AC97_SLOT_MIC),
+ } }
+ },
+};
+
+static int __devinit snd_atmel_ac97_pcm_new(struct atmel_ac97 *chip)
+{
+ struct snd_pcm *pcm;
+ int err;
+
+ err = snd_ac97_pcm_assign(chip->ac97_bus,
+ ARRAY_SIZE(atmel_ac97_pcm_defs),
+ atmel_ac97_pcm_defs);
+ if (err)
+ return err;
+
+ err = snd_pcm_new(chip->card, "Atmel-AC97", 0, 1, 1, &pcm);
+ if (err)
+ return err;
+
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+ &atmel_ac97_playback_ops);
+
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
+ &atmel_ac97_capture_ops);
+
+ snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+ &chip->pdev->dev,
+ 128 * 1024, 128 * 1024);
+
+ pcm->private_data = chip;
+ pcm->info_flags = 0;
+ strcpy(pcm->name, "Atmel-AC97");
+ chip->pcm = pcm;
+
+ return 0;
+}
+
+/*
+ * Mixer part.
+ */
+static int snd_atmel_ac97_mixer_new(struct atmel_ac97 *chip)
+{
+ int err;
+ struct snd_ac97_template template;
+
+ memset(&template, 0, sizeof(template));
+ template.private_data = chip;
+ err = snd_ac97_mixer(chip->ac97_bus, &template, &chip->ac97);
+
+ return err;
+}
+
+static void atmel_ac97_error(struct dma_request *_req)
+{
+ struct dma_request_cyclic *req = to_dma_request_cyclic(_req);
+ struct atmel_ac97 *chip = req->dev_id;
+
+ dev_dbg(&chip->pdev->dev, "DMA Controller error, channel %d\n",
+ req->req.channel);
+}
+
+static void atmel_ac97_block_complete(struct dma_request *_req)
+{
+ struct dma_request_cyclic *req = to_dma_request_cyclic(_req);
+ struct atmel_ac97 *chip = req->dev_id;
+ if (req->periph_id == chip->dma.tx_periph_id)
+ snd_pcm_period_elapsed(chip->playback_substream);
+ else
+ snd_pcm_period_elapsed(chip->capture_substream);
+}
+
+/*
+ * Codec part.
+ */
+static void snd_atmel_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
+ unsigned short val)
+{
+ struct atmel_ac97 *chip = get_chip(ac97);
+ unsigned long word;
+ int timeout = 40;
+
+ word = (reg & 0x7f) << 16 | val;
+
+ do {
+ if (ac97c_readl(chip, COSR) & AC97C_CSR_TXRDY) {
+ ac97c_writel(chip, COTHR, word);
+ return;
+ }
+ udelay(1);
+ } while (--timeout);
+
+ dev_dbg(&chip->pdev->dev, "codec write timeout\n");
+}
+
+static unsigned short snd_atmel_ac97_read(struct snd_ac97 *ac97,
+ unsigned short reg)
+{
+ struct atmel_ac97 *chip = get_chip(ac97);
+ unsigned long word;
+ int timeout = 40;
+ int write = 10;
+
+ word = (0x80 | (reg & 0x7f)) << 16;
+
+ if ((ac97c_readl(chip, COSR) & AC97C_CSR_RXRDY) != 0)
+ ac97c_readl(chip, CORHR);
+
+retry_write:
+ timeout = 40;
+
+ do {
+ if ((ac97c_readl(chip, COSR) & AC97C_CSR_TXRDY) != 0) {
+ ac97c_writel(chip, COTHR, word);
+ goto read_reg;
+ }
+ mdelay(10);
+ } while (--timeout);
+
+ if (!--write)
+ goto timed_out;
+ goto retry_write;
+
+read_reg:
+ do {
+ if ((ac97c_readl(chip, COSR) & AC97C_CSR_RXRDY) != 0) {
+ unsigned short val = ac97c_readl(chip, CORHR);
+ return val;
+ }
+ mdelay(10);
+ } while (--timeout);
+
+ if (!--write)
+ goto timed_out;
+ goto retry_write;
+
+timed_out:
+ dev_dbg(&chip->pdev->dev, "codec read timeout\n");
+ return 0xffff;
+}
+
+static void snd_atmel_ac97_reset(struct atmel_ac97 *chip)
+{
+ ac97c_writel(chip, MR, AC97C_MR_WRST);
+ mdelay(1);
+ ac97c_writel(chip, MR, AC97C_MR_ENA);
+}
+
+static void snd_atmel_ac97_destroy(struct snd_card *card)
+{
+ struct atmel_ac97 *chip = get_chip(card);
+
+ if (chip->regs)
+ iounmap(chip->regs);
+
+ if (chip->mck) {
+ clk_disable(chip->mck);
+ clk_put(chip->mck);
+ }
+
+ if (chip->dma.req_tx.req.dmac) {
+ dma_release_channel(chip->dma.req_tx.req.dmac,
+ chip->dma.req_tx.req.channel);
+ }
+ if (chip->dma.req_rx.req.dmac) {
+ dma_release_channel(chip->dma.req_rx.req.dmac,
+ chip->dma.req_rx.req.channel);
+ }
+}
+
+static int __devinit snd_atmel_ac97_create(struct snd_card *card,
+ struct platform_device *pdev)
+{
+ static struct snd_ac97_bus_ops ops = {
+ .write = snd_atmel_ac97_write,
+ .read = snd_atmel_ac97_read,
+ };
+ struct atmel_ac97 *chip = get_chip(card);
+ struct resource *regs;
+ struct clk *mck;
+ int err;
+
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!regs)
+ return -ENXIO;
+
+ mck = clk_get(&pdev->dev, "pclk");
+ if (IS_ERR(mck))
+ return PTR_ERR(mck);
+ clk_enable(mck);
+ chip->mck = mck;
+
+ card->private_free = snd_atmel_ac97_destroy;
+
+ spin_lock_init(&chip->lock);
+ chip->card = card;
+ chip->pdev = pdev;
+
+ chip->regs = ioremap(regs->start, regs->end - regs->start + 1);
+ if (!chip->regs)
+ return -ENOMEM;
+
+ snd_card_set_dev(card, &pdev->dev);
+
+ err = snd_ac97_bus(card, 0, &ops, chip, &chip->ac97_bus);
+
+ return err;
+}
+
+static int __devinit snd_atmel_ac97_probe(struct platform_device *pdev)
+{
+ static int dev;
+ struct snd_card *card;
+ struct atmel_ac97 *chip;
+ int err;
+ int ch;
+
+ mutex_init(&opened_mutex);
+
+ err = -ENOMEM;
+ card = snd_card_new(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
+ THIS_MODULE, sizeof(struct atmel_ac97));
+ if (!card)
+ goto out;
+ chip = get_chip(card);
+
+ err = snd_atmel_ac97_create(card, pdev);
+ if (err)
+ goto out_free_card;
+
+ snd_atmel_ac97_reset(chip);
+
+ err = snd_atmel_ac97_mixer_new(chip);
+ if (err)
+ goto out_free_card;
+
+ err = snd_atmel_ac97_pcm_new(chip);
+ if (err)
+ goto out_free_card;
+
+ /* TODO: Get this information from the platform device */
+ chip->dma.req_tx.req.dmac = find_dma_controller(0);
+ if (!chip->dma.req_tx.req.dmac) {
+ dev_dbg(&chip->pdev->dev, "DMA controller for TX missing\n");
+ err = -ENODEV;
+ goto out_free_card;
+ }
+ chip->dma.req_rx.req.dmac = find_dma_controller(0);
+ if (!chip->dma.req_rx.req.dmac) {
+ dev_dbg(&chip->pdev->dev, "DMA controller for RX missing\n");
+ err = -ENODEV;
+ goto out_free_card;
+ }
+
+ chip->dma.rx_periph_id = 3;
+ chip->dma.tx_periph_id = 4;
+
+ ch = dma_alloc_channel(chip->dma.req_tx.req.dmac);
+ if (ch < 0) {
+ dev_dbg(&chip->pdev->dev,
+ "could not allocate TX DMA channel\n");
+ err = ch;
+ goto out_free_card;
+ }
+ chip->dma.req_tx.req.channel = ch;
+ chip->dma.req_tx.width = DMA_WIDTH_16BIT;
+ chip->dma.req_tx.req.block_complete = atmel_ac97_block_complete;
+ chip->dma.req_tx.req.error = atmel_ac97_error;
+
+ ch = dma_alloc_channel(chip->dma.req_rx.req.dmac);
+ if (ch < 0) {
+ dev_dbg(&chip->pdev->dev,
+ "could not allocate RX DMA channel\n");
+ err = ch;
+ goto out_free_card;
+ }
+ chip->dma.req_rx.req.channel = ch;
+ chip->dma.req_rx.width = DMA_WIDTH_16BIT;
+ chip->dma.req_rx.req.block_complete = atmel_ac97_block_complete;
+ chip->dma.req_rx.req.error = atmel_ac97_error;
+
+ strcpy(card->driver, "atmel_ac97c");
+ strcpy(card->shortname, "atmel_ac97c");
+ sprintf(card->longname, "Atmel AVR32 AC97 controller");
+
+ err = snd_card_register(card);
+ if (err)
+ goto out_free_card;
+
+ platform_set_drvdata(pdev, card);
+ dev++;
+
+ dev_info(&pdev->dev, "Atmel AVR32 AC97 controller at 0x%p\n",
+ chip->regs);
+
+ return 0;
+
+out_free_card:
+ snd_card_free(card);
+out:
+ return err;
+}
+
+#ifdef CONFIG_PM
+ static int
+snd_atmel_ac97_suspend(struct platform_device *pdev, pm_message_t msg)
+{
+ struct snd_card *card = platform_get_drvdata(pdev);
+ struct atmel_ac97 *chip = card->private_data;
+
+ clk_disable(chip->mck);
+
+ return 0;
+}
+
+static int snd_atmel_ac97_resume(struct platform_device *pdev)
+{
+ struct snd_card *card = dev_get_drvdata(pdev);
+ struct atmel_ac97 *chip = card->private_data;
+
+ clk_enable(chip->mck);
+
+ return 0;
+}
+#else
+#define snd_atmel_ac97_suspend NULL
+#define snd_atmel_ac97_resume NULL
+#endif
+
+static int __devexit snd_atmel_ac97_remove(struct platform_device *pdev)
+{
+ struct snd_card *card = platform_get_drvdata(pdev);
+
+ snd_card_free(card);
+ platform_set_drvdata(pdev, NULL);
+ return 0;
+}
+
+static struct platform_driver atmel_ac97_driver = {
+ .remove = __devexit_p(snd_atmel_ac97_remove),
+ .driver = {
+ .name = "atmel_ac97c",
+ },
+ .suspend = snd_atmel_ac97_suspend,
+ .resume = snd_atmel_ac97_resume,
+};
+
+static int __init atmel_ac97_init(void)
+{
+ return platform_driver_probe(&atmel_ac97_driver,
+ snd_atmel_ac97_probe);
+}
+module_init(atmel_ac97_init);
+
+static void __exit atmel_ac97_exit(void)
+{
+ platform_driver_unregister(&atmel_ac97_driver);
+}
+module_exit(atmel_ac97_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Driver for Atmel AC97 Controller");
+MODULE_AUTHOR("Haavard Skinnemoen <hskinnemoen@atmel.com>");
diff --git a/sound/avr32/ac97c.h b/sound/avr32/ac97c.h
new file mode 100644
index 0000000..96246e7
--- /dev/null
+++ b/sound/avr32/ac97c.h
@@ -0,0 +1,71 @@
+/*
+ * Register definitions for the Atmel AC97 Controller.
+ *
+ * Copyright (C) 2005-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __SOUND_AVR32_AC97C_H
+#define __SOUND_AVR32_AC97C_H
+
+#define AC97C_MR 0x08
+#define AC97C_ICA 0x10
+#define AC97C_OCA 0x14
+#define AC97C_CARHR 0x20
+#define AC97C_CATHR 0x24
+#define AC97C_CASR 0x28
+#define AC97C_CAMR 0x2c
+#define AC97C_CBRHR 0x30
+#define AC97C_CBTHR 0x34
+#define AC97C_CBSR 0x38
+#define AC97C_CBMR 0x3c
+#define AC97C_CORHR 0x40
+#define AC97C_COTHR 0x44
+#define AC97C_COSR 0x48
+#define AC97C_COMR 0x4c
+#define AC97C_SR 0x50
+#define AC97C_IER 0x54
+#define AC97C_IDR 0x58
+#define AC97C_IMR 0x5c
+#define AC97C_VERSION 0xfc
+
+#define AC97C_CATPR PDC_TPR
+#define AC97C_CATCR PDC_TCR
+#define AC97C_CATNPR PDC_TNPR
+#define AC97C_CATNCR PDC_TNCR
+#define AC97C_CARPR PDC_RPR
+#define AC97C_CARCR PDC_RCR
+#define AC97C_CARNPR PDC_RNPR
+#define AC97C_CARNCR PDC_RNCR
+#define AC97C_PTCR PDC_PTCR
+
+#define AC97C_MR_ENA (1 << 0)
+#define AC97C_MR_WRST (1 << 1)
+#define AC97C_MR_VRA (1 << 2)
+
+#define AC97C_CSR_TXRDY (1 << 0)
+#define AC97C_CSR_UNRUN (1 << 2)
+#define AC97C_CSR_RXRDY (1 << 4)
+#define AC97C_CSR_ENDTX (1 << 10)
+#define AC97C_CSR_ENDRX (1 << 14)
+
+#define AC97C_CMR_SIZE_20 (0 << 16)
+#define AC97C_CMR_SIZE_18 (1 << 16)
+#define AC97C_CMR_SIZE_16 (2 << 16)
+#define AC97C_CMR_SIZE_10 (3 << 16)
+#define AC97C_CMR_CEM_LITTLE (1 << 18)
+#define AC97C_CMR_CEM_BIG (0 << 18)
+#define AC97C_CMR_CENA (1 << 21)
+#define AC97C_CMR_PDCEN (1 << 22)
+
+#define AC97C_SR_CAEVT (1 << 3)
+
+#define AC97C_CH_ASSIGN(slot, channel) \
+ (AC97C_CHANNEL_##channel << (3 * (AC97_SLOT_##slot - 3)))
+#define AC97C_CHANNEL_NONE 0x0
+#define AC97C_CHANNEL_A 0x1
+#define AC97C_CHANNEL_B 0x2
+
+#endif /* __SOUND_AVR32_AC97C_H */
diff --git a/sound/oss/Kconfig b/sound/oss/Kconfig
index af37cd0..e3cc557 100644
--- a/sound/oss/Kconfig
+++ b/sound/oss/Kconfig
@@ -654,3 +654,7 @@ config SOUND_SH_DAC_AUDIO_CHANNEL
int "DAC channel"
default "1"
depends on SOUND_SH_DAC_AUDIO
+
+config SOUND_AT32_ABDAC
+ tristate "Atmel AT32 Audio Bitstream DAC (ABDAC) support"
+ depends on SOUND_PRIME && AVR32
diff --git a/sound/oss/Makefile b/sound/oss/Makefile
index 1200670..fafc246 100644
--- a/sound/oss/Makefile
+++ b/sound/oss/Makefile
@@ -10,6 +10,7 @@ obj-$(CONFIG_SOUND_CS4232) += cs4232.o ad1848.o
# Please leave it as is, cause the link order is significant !
+obj-$(CONFIG_SOUND_AT32_ABDAC) += at32_abdac.o
obj-$(CONFIG_SOUND_SH_DAC_AUDIO) += sh_dac_audio.o
obj-$(CONFIG_SOUND_HAL2) += hal2.o
obj-$(CONFIG_SOUND_AEDSP16) += aedsp16.o
diff --git a/sound/oss/at32_abdac.c b/sound/oss/at32_abdac.c
new file mode 100644
index 0000000..cb997d7
--- /dev/null
+++ b/sound/oss/at32_abdac.c
@@ -0,0 +1,722 @@
+/*
+ * OSS Sound Driver for the Atmel AT32 on-chip DAC.
+ *
+ * Copyright (C) 2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/sound.h>
+#include <linux/soundcard.h>
+
+#include <asm/byteorder.h>
+#include <asm/dma-controller.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+
+/* We want to use the "bizarre" swap-bytes-in-each-halfword macro */
+#include <linux/byteorder/swabb.h>
+
+#include "at32_abdac.h"
+
+#define DMA_BUFFER_SIZE 32768
+#define DMA_PERIOD_SHIFT 10
+#define DMA_PERIOD_SIZE (1 << DMA_PERIOD_SHIFT)
+#define DMA_WRITE_THRESHOLD DMA_PERIOD_SIZE
+
+struct sound_settings {
+ unsigned int format;
+ unsigned int channels;
+ unsigned int sample_rate;
+ /* log2(bytes per sample) */
+ unsigned int input_order;
+};
+
+struct at32_dac {
+ spinlock_t lock;
+ void __iomem *regs;
+
+ /* head and tail refer to number of words */
+ struct {
+ u32 *buf;
+ int head;
+ int tail;
+ } dma;
+
+ struct semaphore sem;
+ wait_queue_head_t write_wait;
+
+ /*
+ * Read at most ucount bytes from ubuf, translate to 2-channel
+ * signed 16-bit big endian format and write to the DMA buffer
+ * as long as there is room left. Return the number of bytes
+ * successfully copied from ubuf, or -EFAULT if the first
+ * sample from ubuf couldn't be read. This function is not
+ * called unless there is room for at least one sample (4
+ * bytes) in the DMA buffer.
+ */
+ ssize_t (*trans)(struct at32_dac *dac, const char __user *ubuf,
+ size_t ucount);
+
+ struct sound_settings dsp_settings;
+ struct dma_request_cyclic req;
+
+ struct clk *mck;
+ struct clk *sample_clk;
+ struct platform_device *pdev;
+ int busy;
+ int playing;
+ int dev_dsp;
+};
+static struct at32_dac *the_dac;
+
+static inline unsigned int abdac_get_head(struct at32_dac *dac)
+{
+ return dac->dma.head & ((DMA_BUFFER_SIZE / 4) - 1);
+}
+
+static inline unsigned int abdac_get_tail(struct at32_dac *dac)
+{
+ return dac->dma.tail & ((DMA_BUFFER_SIZE / 4) - 1);
+}
+
+static inline unsigned int abdac_dma_space(struct at32_dac *dac)
+{
+ unsigned int space;
+
+ space = ((dac->dma.tail - dac->dma.head - 1)
+ & ((DMA_BUFFER_SIZE / 4) - 1));
+ return space;
+}
+
+static void abdac_update_dma_tail(struct at32_dac *dac)
+{
+ dma_addr_t dma_addr;
+ unsigned int new_tail;
+
+ if (dac->playing) {
+ dma_addr = dma_get_current_pos(dac->req.req.dmac,
+ dac->req.req.channel);
+ new_tail = (dma_addr - dac->req.buffer_start) / 4;
+ if (new_tail >= dac->dma.head
+ && (dac->dma.tail < dac->dma.head
+ || dac->dma.tail > new_tail))
+ dev_notice(&dac->pdev->dev, "DMA underrun detected!\n");
+ dac->dma.tail = new_tail;
+ dev_dbg(&dac->pdev->dev, "update tail: 0x%x - 0x%x = %u\n",
+ dma_addr, dac->req.buffer_start, dac->dma.tail);
+ }
+}
+
+static int abdac_start(struct at32_dac *dac)
+{
+ int ret;
+
+ if (dac->playing)
+ return 0;
+
+ memset(dac->dma.buf, 0, DMA_BUFFER_SIZE);
+
+ clk_enable(dac->sample_clk);
+
+ ret = dma_prepare_request_cyclic(dac->req.req.dmac, &dac->req);
+ if (ret)
+ goto out_stop_clock;
+
+ dev_dbg(&dac->pdev->dev, "starting DMA...\n");
+ ret = dma_start_request(dac->req.req.dmac, dac->req.req.channel);
+ if (ret)
+ goto out_stop_request;
+
+ dac_writel(dac, CTRL, DAC_BIT(EN));
+ dac->playing = 1;
+
+ return 0;
+
+out_stop_request:
+ dma_stop_request(dac->req.req.dmac,
+ dac->req.req.channel);
+out_stop_clock:
+ clk_disable(dac->sample_clk);
+ return ret;
+}
+
+static int abdac_stop(struct at32_dac *dac)
+{
+ if (dac->playing) {
+ dma_stop_request(dac->req.req.dmac, dac->req.req.channel);
+ dac_writel(dac, DATA, 0);
+ dac_writel(dac, CTRL, 0);
+ dac->playing = 0;
+ clk_disable(dac->sample_clk);
+ }
+
+ return 0;
+}
+
+static int abdac_dma_prepare(struct at32_dac *dac)
+{
+ dac->dma.buf = dma_alloc_coherent(&dac->pdev->dev, DMA_BUFFER_SIZE,
+ &dac->req.buffer_start, GFP_KERNEL);
+ if (!dac->dma.buf)
+ return -ENOMEM;
+
+ dac->dma.head = dac->dma.tail = 0;
+ dac->req.periods = DMA_BUFFER_SIZE / DMA_PERIOD_SIZE;
+ dac->req.buffer_size = DMA_BUFFER_SIZE;
+
+ return 0;
+}
+
+static void abdac_dma_cleanup(struct at32_dac *dac)
+{
+ if (dac->dma.buf)
+ dma_free_coherent(&dac->pdev->dev, DMA_BUFFER_SIZE,
+ dac->dma.buf, dac->req.buffer_start);
+ dac->dma.buf = NULL;
+}
+
+static void abdac_dma_block_complete(struct dma_request *req)
+{
+ struct dma_request_cyclic *creq = to_dma_request_cyclic(req);
+ struct at32_dac *dac = container_of(creq, struct at32_dac, req);
+
+ wake_up(&dac->write_wait);
+}
+
+static void abdac_dma_error(struct dma_request *req)
+{
+ struct dma_request_cyclic *creq = to_dma_request_cyclic(req);
+ struct at32_dac *dac = container_of(creq, struct at32_dac, req);
+
+ dev_err(&dac->pdev->dev, "DMA error\n");
+}
+
+static irqreturn_t abdac_interrupt(int irq, void *dev_id)
+{
+ struct at32_dac *dac = dev_id;
+ u32 status;
+
+ status = dac_readl(dac, INT_STATUS);
+ if (status & DAC_BIT(UNDERRUN)) {
+ dev_err(&dac->pdev->dev, "Underrun detected!\n");
+ dac_writel(dac, INT_CLR, DAC_BIT(UNDERRUN));
+ } else {
+ dev_err(&dac->pdev->dev, "Spurious interrupt (status=0x%x)\n",
+ status);
+ dac_writel(dac, INT_CLR, status);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static ssize_t trans_s16be(struct at32_dac *dac, const char __user *ubuf,
+ size_t ucount)
+{
+ ssize_t ret;
+
+ if (dac->dsp_settings.channels == 2) {
+ const u32 __user *up = (const u32 __user *)ubuf;
+ u32 sample;
+
+ for (ret = 0; ret < (ssize_t)(ucount - 3); ret += 4) {
+ if (!abdac_dma_space(dac))
+ break;
+
+ if (unlikely(__get_user(sample, up++))) {
+ if (ret == 0)
+ ret = -EFAULT;
+ break;
+ }
+ dac->dma.buf[abdac_get_head(dac)] = sample;
+ dac->dma.head++;
+ }
+ } else {
+ const u16 __user *up = (const u16 __user *)ubuf;
+ u16 sample;
+
+ for (ret = 0; ret < (ssize_t)(ucount - 1); ret += 2) {
+ if (!abdac_dma_space(dac))
+ break;
+
+ if (unlikely(__get_user(sample, up++))) {
+ if (ret == 0)
+ ret = -EFAULT;
+ break;
+ }
+ dac->dma.buf[abdac_get_head(dac)]
+ = (sample << 16) | sample;
+ dac->dma.head++;
+ }
+ }
+
+ return ret;
+}
+
+static ssize_t trans_s16le(struct at32_dac *dac, const char __user *ubuf,
+ size_t ucount)
+{
+ ssize_t ret;
+
+ if (dac->dsp_settings.channels == 2) {
+ const u32 __user *up = (const u32 __user *)ubuf;
+ u32 sample;
+
+ for (ret = 0; ret < (ssize_t)(ucount - 3); ret += 4) {
+ if (!abdac_dma_space(dac))
+ break;
+
+ if (unlikely(__get_user(sample, up++))) {
+ if (ret == 0)
+ ret = -EFAULT;
+ break;
+ }
+ /* Swap bytes in each halfword */
+ dac->dma.buf[abdac_get_head(dac)] = swahb32(sample);
+ dac->dma.head++;
+ }
+ } else {
+ const u16 __user *up = (const u16 __user *)ubuf;
+ u16 sample;
+
+ for (ret = 0; ret < (ssize_t)(ucount - 1); ret += 2) {
+ if (!abdac_dma_space(dac))
+ break;
+
+ if (unlikely(__get_user(sample, up++))) {
+ if (ret == 0)
+ ret = -EFAULT;
+ break;
+ }
+ sample = swab16(sample);
+ dac->dma.buf[abdac_get_head(dac)]
+ = (sample << 16) | sample;
+ dac->dma.head++;
+ }
+ }
+
+ return ret;
+}
+
+static ssize_t abdac_dma_translate_from_user(struct at32_dac *dac,
+ const char __user *buffer,
+ size_t count)
+{
+ /* At least one buffer must be available at this point */
+ dev_dbg(&dac->pdev->dev, "copying %zu bytes from user...\n", count);
+
+ return dac->trans(dac, buffer, count);
+}
+
+static int abdac_set_format(struct at32_dac *dac, int format)
+{
+ unsigned int order;
+
+ switch (format) {
+ case AFMT_S16_BE:
+ order = 1;
+ dac->trans = trans_s16be;
+ break;
+ case AFMT_S16_LE:
+ order = 1;
+ dac->trans = trans_s16le;
+ break;
+ default:
+ dev_dbg(&dac->pdev->dev, "unsupported format: %d\n", format);
+ return -EINVAL;
+ }
+
+ if (dac->dsp_settings.channels == 2)
+ order++;
+
+ dac->dsp_settings.input_order = order;
+ dac->dsp_settings.format = format;
+ return 0;
+}
+
+static int abdac_set_sample_rate(struct at32_dac *dac, unsigned long rate)
+{
+ unsigned long new_rate;
+ int ret;
+
+ ret = clk_set_rate(dac->sample_clk, 256 * rate);
+ if (ret < 0)
+ return ret;
+
+ /* TODO: mplayer seems to have a problem with this */
+#if 0
+ new_rate = clk_get_rate(dac->sample_clk);
+ dac->dsp_settings.sample_rate = new_rate / 256;
+#else
+ dac->dsp_settings.sample_rate = rate;
+#endif
+
+ return 0;
+}
+
+static ssize_t abdac_dsp_write(struct file *file,
+ const char __user *buffer,
+ size_t count, loff_t *ppos)
+{
+ struct at32_dac *dac = file->private_data;
+ DECLARE_WAITQUEUE(wait, current);
+ unsigned int avail;
+ ssize_t copied;
+ ssize_t ret;
+
+ /* Avoid address space checking in the translation functions */
+ if (!access_ok(buffer, count, VERIFY_READ))
+ return -EFAULT;
+
+ down(&dac->sem);
+
+ if (!dac->dma.buf) {
+ ret = abdac_dma_prepare(dac);
+ if (ret)
+ goto out;
+ }
+
+ add_wait_queue(&dac->write_wait, &wait);
+ ret = 0;
+ while (count > 0) {
+ do {
+ abdac_update_dma_tail(dac);
+ avail = abdac_dma_space(dac);
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (avail >= DMA_WRITE_THRESHOLD)
+ break;
+
+ if (file->f_flags & O_NONBLOCK) {
+ if (!ret)
+ ret = -EAGAIN;
+ goto out;
+ }
+
+ pr_debug("Going to wait (avail = %u, count = %zu)\n",
+ avail, count);
+
+ up(&dac->sem);
+ schedule();
+ if (signal_pending(current)) {
+ if (!ret)
+ ret = -ERESTARTSYS;
+ goto out_nosem;
+ }
+ down(&dac->sem);
+ } while (1);
+
+ copied = abdac_dma_translate_from_user(dac, buffer, count);
+ if (copied < 0) {
+ if (!ret)
+ ret = -EFAULT;
+ goto out;
+ }
+
+ abdac_start(dac);
+
+ count -= copied;
+ ret += copied;
+ }
+
+out:
+ up(&dac->sem);
+out_nosem:
+ remove_wait_queue(&dac->write_wait, &wait);
+ set_current_state(TASK_RUNNING);
+ return ret;
+}
+
+static int abdac_dsp_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct at32_dac *dac = file->private_data;
+ int __user *up = (int __user *)arg;
+ struct audio_buf_info abinfo;
+ int val, ret;
+
+ switch (cmd) {
+ case OSS_GETVERSION:
+ return put_user(SOUND_VERSION, up);
+
+ case SNDCTL_DSP_SPEED:
+ if (get_user(val, up))
+ return -EFAULT;
+ if (val >= 0) {
+ abdac_stop(dac);
+ ret = abdac_set_sample_rate(dac, val);
+ if (ret)
+ return ret;
+ }
+ return put_user(dac->dsp_settings.sample_rate, up);
+
+ case SNDCTL_DSP_STEREO:
+ if (get_user(val, up))
+ return -EFAULT;
+ abdac_stop(dac);
+ if (val && dac->dsp_settings.channels == 1)
+ dac->dsp_settings.input_order++;
+ else if (!val && dac->dsp_settings.channels != 1)
+ dac->dsp_settings.input_order--;
+ dac->dsp_settings.channels = val ? 2 : 1;
+ return 0;
+
+ case SNDCTL_DSP_CHANNELS:
+ if (get_user(val, up))
+ return -EFAULT;
+
+ if (val) {
+ if (val < 0 || val > 2)
+ return -EINVAL;
+
+ abdac_stop(dac);
+ dac->dsp_settings.input_order
+ += val - dac->dsp_settings.channels;
+ dac->dsp_settings.channels = val;
+ }
+ return put_user(val, (int *)arg);
+
+ case SNDCTL_DSP_GETFMTS:
+ return put_user(AFMT_S16_BE | AFMT_S16_BE, up);
+
+ case SNDCTL_DSP_SETFMT:
+ if (get_user(val, up))
+ return -EFAULT;
+
+ if (val == AFMT_QUERY) {
+ val = dac->dsp_settings.format;
+ } else {
+ ret = abdac_set_format(dac, val);
+ if (ret)
+ return ret;
+ }
+ return put_user(val, up);
+
+ case SNDCTL_DSP_GETOSPACE:
+ abdac_update_dma_tail(dac);
+ abinfo.fragsize = ((1 << dac->dsp_settings.input_order)
+ * (DMA_PERIOD_SIZE / 4));
+ abinfo.bytes = (abdac_dma_space(dac)
+ << dac->dsp_settings.input_order);
+ abinfo.fragstotal = ((DMA_BUFFER_SIZE * 4)
+ >> (DMA_PERIOD_SHIFT
+ + dac->dsp_settings.input_order));
+ abinfo.fragments = ((abinfo.bytes
+ >> dac->dsp_settings.input_order)
+ / (DMA_PERIOD_SIZE / 4));
+ pr_debug("fragments=%d fragstotal=%d fragsize=%d bytes=%d\n",
+ abinfo.fragments, abinfo.fragstotal, abinfo.fragsize,
+ abinfo.bytes);
+ return copy_to_user(up, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
+
+ default:
+ dev_dbg(&dac->pdev->dev, "Unimplemented ioctl cmd: 0x%x\n", cmd);
+ return -EINVAL;
+ }
+}
+
+static int abdac_dsp_open(struct inode *inode, struct file *file)
+{
+ struct at32_dac *dac = the_dac;
+ int ret;
+
+ if (file->f_mode & FMODE_READ)
+ return -ENXIO;
+
+ down(&dac->sem);
+ ret = -EBUSY;
+ if (dac->busy)
+ goto out;
+
+ dac->dma.head = dac->dma.tail = 0;
+
+ /* FIXME: What are the correct defaults? */
+ dac->dsp_settings.channels = 2;
+ abdac_set_format(dac, AFMT_S16_BE);
+ ret = abdac_set_sample_rate(dac, 8000);
+ if (ret)
+ goto out;
+
+ file->private_data = dac;
+ dac->busy = 1;
+
+ ret = 0;
+
+out:
+ up(&dac->sem);
+ return ret;
+}
+
+static int abdac_dsp_release(struct inode *inode, struct file *file)
+{
+ struct at32_dac *dac = file->private_data;
+
+ down(&dac->sem);
+
+ abdac_stop(dac);
+ abdac_dma_cleanup(dac);
+ dac->busy = 0;
+
+ up(&dac->sem);
+
+ return 0;
+}
+
+static struct file_operations abdac_dsp_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .write = abdac_dsp_write,
+ .ioctl = abdac_dsp_ioctl,
+ .open = abdac_dsp_open,
+ .release = abdac_dsp_release,
+};
+
+static int __init abdac_probe(struct platform_device *pdev)
+{
+ struct at32_dac *dac;
+ struct resource *regs;
+ struct clk *mck;
+ struct clk *sample_clk;
+ int irq;
+ int ret;
+
+ if (the_dac)
+ return -EBUSY;
+
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!regs)
+ return -ENXIO;
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
+
+ mck = clk_get(&pdev->dev, "pclk");
+ if (IS_ERR(mck))
+ return PTR_ERR(mck);
+ sample_clk = clk_get(&pdev->dev, "sample_clk");
+ if (IS_ERR(sample_clk)) {
+ ret = PTR_ERR(sample_clk);
+ goto out_put_mck;
+ }
+ clk_enable(mck);
+
+ ret = -ENOMEM;
+ dac = kzalloc(sizeof(struct at32_dac), GFP_KERNEL);
+ if (!dac)
+ goto out_disable_clk;
+
+ spin_lock_init(&dac->lock);
+ init_MUTEX(&dac->sem);
+ init_waitqueue_head(&dac->write_wait);
+ dac->pdev = pdev;
+ dac->mck = mck;
+ dac->sample_clk = sample_clk;
+
+ dac->regs = ioremap(regs->start, regs->end - regs->start + 1);
+ if (!dac->regs)
+ goto out_free_dac;
+
+ ret = request_irq(irq, abdac_interrupt, 0, "dac", dac);
+ if (ret)
+ goto out_unmap_regs;
+
+ /* FIXME */
+ dac->req.req.dmac = find_dma_controller(0);
+ if (!dac->req.req.dmac)
+ goto out_free_irq;
+
+ ret = dma_alloc_channel(dac->req.req.dmac);
+ if (ret < 0)
+ goto out_free_irq;
+
+ dac->req.req.channel = ret;
+ dac->req.req.block_complete = abdac_dma_block_complete;
+ dac->req.req.error = abdac_dma_error;
+ dac->req.data_reg = regs->start + DAC_DATA;
+ dac->req.periph_id = 2; /* FIXME */
+ dac->req.direction = DMA_DIR_MEM_TO_PERIPH;
+ dac->req.width = DMA_WIDTH_32BIT;
+
+ /* Make sure the DAC is silent and disabled */
+ dac_writel(dac, DATA, 0);
+ dac_writel(dac, CTRL, 0);
+
+ ret = register_sound_dsp(&abdac_dsp_fops, -1);
+ if (ret < 0)
+ goto out_free_dma;
+ dac->dev_dsp = ret;
+
+ /* TODO: Register mixer */
+
+ the_dac = dac;
+ platform_set_drvdata(pdev, dac);
+
+ return 0;
+
+out_free_dma:
+ dma_release_channel(dac->req.req.dmac, dac->req.req.channel);
+out_free_irq:
+ free_irq(irq, dac);
+out_unmap_regs:
+ iounmap(dac->regs);
+out_free_dac:
+ kfree(dac);
+out_disable_clk:
+ clk_disable(mck);
+ clk_put(sample_clk);
+out_put_mck:
+ clk_put(mck);
+ return ret;
+}
+
+static int __exit abdac_remove(struct platform_device *pdev)
+{
+ struct at32_dac *dac;
+
+ dac = platform_get_drvdata(pdev);
+ if (dac) {
+ unregister_sound_dsp(dac->dev_dsp);
+ dma_release_channel(dac->req.req.dmac, dac->req.req.channel);
+ free_irq(platform_get_irq(pdev, 0), dac);
+ iounmap(dac->regs);
+ clk_disable(dac->mck);
+ clk_put(dac->sample_clk);
+ clk_put(dac->mck);
+ kfree(dac);
+ platform_set_drvdata(pdev, NULL);
+ the_dac = NULL;
+ }
+
+ return 0;
+}
+
+static struct platform_driver abdac_driver = {
+ .remove = __exit_p(abdac_remove),
+ .driver = {
+ .name = "abdac",
+ },
+};
+
+static int __init abdac_init(void)
+{
+ return platform_driver_probe(&abdac_driver, abdac_probe);
+}
+module_init(abdac_init);
+
+static void __exit abdac_exit(void)
+{
+ platform_driver_unregister(&abdac_driver);
+}
+module_exit(abdac_exit);
+
+MODULE_AUTHOR("Haavard Skinnemoen <hskinnemoen@atmel.com>");
+MODULE_DESCRIPTION("Sound Driver for the Atmel AT32 ABDAC");
+MODULE_LICENSE("GPL");
diff --git a/sound/oss/at32_abdac.h b/sound/oss/at32_abdac.h
new file mode 100644
index 0000000..3c88e25
--- /dev/null
+++ b/sound/oss/at32_abdac.h
@@ -0,0 +1,59 @@
+/*
+ * Register definitions for the Atmel AT32 on-chip DAC.
+ *
+ * Copyright (C) 2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __SOUND_OSS_AT32_ABDAC_H__
+#define __SOUND_OSS_AT32_ABDAC_H__
+
+/* DAC register offsets */
+#define DAC_DATA 0x0000
+#define DAC_CTRL 0x0008
+#define DAC_INT_MASK 0x000c
+#define DAC_INT_EN 0x0010
+#define DAC_INT_DIS 0x0014
+#define DAC_INT_CLR 0x0018
+#define DAC_INT_STATUS 0x001c
+#define DAC_PDC_DATA 0x0020
+
+/* Bitfields in CTRL */
+#define DAC_SWAP_OFFSET 30
+#define DAC_SWAP_SIZE 1
+#define DAC_EN_OFFSET 31
+#define DAC_EN_SIZE 1
+
+/* Bitfields in INT_MASK/INT_EN/INT_DIS/INT_STATUS/INT_CLR */
+#define DAC_UNDERRUN_OFFSET 28
+#define DAC_UNDERRUN_SIZE 1
+#define DAC_TX_READY_OFFSET 29
+#define DAC_TX_READY_SIZE 1
+#define DAC_TX_BUFFER_EMPTY_OFFSET 30
+#define DAC_TX_BUFFER_EMPTY_SIZE 1
+#define DAC_CHANNEL_TX_END_OFFSET 31
+#define DAC_CHANNEL_TX_END_SIZE 1
+
+/* Bit manipulation macros */
+#define DAC_BIT(name) \
+ (1 << DAC_##name##_OFFSET)
+#define DAC_BF(name, value) \
+ (((value) & ((1 << DAC_##name##_SIZE) - 1)) \
+ << DAC_##name##_OFFSET)
+#define DAC_BFEXT(name, value) \
+ (((value) >> DAC_##name##_OFFSET) \
+ & ((1 << DAC_##name##_SIZE) - 1))
+#define DAC_BFINS(name, value, old) \
+ (((old) & ~(((1 << DAC_##name##_SIZE) - 1) \
+ << DAC_##name##_OFFSET)) \
+ | DAC_BF(name,value))
+
+/* Register access macros */
+#define dac_readl(port, reg) \
+ __raw_readl((port)->regs + DAC_##reg)
+#define dac_writel(port, reg, value) \
+ __raw_writel((value), (port)->regs + DAC_##reg)
+
+#endif /* __SOUND_OSS_AT32_ABDAC_H__ */
diff --git a/sound/spi/Kconfig b/sound/spi/Kconfig
new file mode 100644
index 0000000..0d08c29
--- /dev/null
+++ b/sound/spi/Kconfig
@@ -0,0 +1,31 @@
+#SPI drivers
+
+menu "SPI devices"
+ depends on SND != n
+
+config SND_AT73C213
+ tristate "Atmel AT73C213 DAC driver"
+ depends on ATMEL_SSC
+ select SND_PCM
+ help
+ Say Y here if you want to use the Atmel AT73C213 external DAC. This
+ DAC can be found on Atmel development boards.
+
+ This driver requires the Atmel SSC driver for sound sink, a
+ peripheral found on most AT91 and AVR32 microprocessors.
+
+ To compile this driver as a module, choose M here: the module will be
+ called snd-at73c213.
+
+config SND_AT73C213_TARGET_BITRATE
+ int "Target bitrate for AT73C213"
+ depends on SND_AT73C213
+ default "48000"
+ range 8000 50000
+ help
+ Sets the target bitrate for the bitrate calculator in the driver.
+ Limited by hardware to be between 8000 Hz and 50000 Hz.
+
+ Set to 48000 Hz by default.
+
+endmenu
diff --git a/sound/spi/Makefile b/sound/spi/Makefile
new file mode 100644
index 0000000..026fb73
--- /dev/null
+++ b/sound/spi/Makefile
@@ -0,0 +1,5 @@
+# Makefile for SPI drivers
+
+snd-at73c213-objs := at73c213.o
+
+obj-$(CONFIG_SND_AT73C213) += snd-at73c213.o
diff --git a/sound/spi/at73c213.c b/sound/spi/at73c213.c
new file mode 100644
index 0000000..f514f47
--- /dev/null
+++ b/sound/spi/at73c213.c
@@ -0,0 +1,1121 @@
+/*
+ * Driver for AT73C213 16-bit stereo DAC connected to Atmel SSC
+ *
+ * Copyright (C) 2006-2007 Atmel Norway
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+/*#define DEBUG*/
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <sound/driver.h>
+#include <sound/initval.h>
+#include <sound/control.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+
+#include <linux/atmel-ssc.h>
+
+#include <linux/spi/spi.h>
+#include <linux/spi/at73c213.h>
+
+#include "at73c213.h"
+
+#define BITRATE_MIN 8000 /* Hardware limit? */
+#define BITRATE_TARGET CONFIG_SND_AT73C213_TARGET_BITRATE
+#define BITRATE_MAX 50000 /* Hardware limit. */
+
+/* Initial (hardware reset) AT73C213 register values. */
+static u8 snd_at73c213_original_image[18] =
+{
+ 0x00, /* 00 - CTRL */
+ 0x05, /* 01 - LLIG */
+ 0x05, /* 02 - RLIG */
+ 0x08, /* 03 - LPMG */
+ 0x08, /* 04 - RPMG */
+ 0x00, /* 05 - LLOG */
+ 0x00, /* 06 - RLOG */
+ 0x22, /* 07 - OLC */
+ 0x09, /* 08 - MC */
+ 0x00, /* 09 - CSFC */
+ 0x00, /* 0A - MISC */
+ 0x00, /* 0B - */
+ 0x00, /* 0C - PRECH */
+ 0x05, /* 0D - AUXG */
+ 0x00, /* 0E - */
+ 0x00, /* 0F - */
+ 0x00, /* 10 - RST */
+ 0x00, /* 11 - PA_CTRL */
+};
+
+struct snd_at73c213 {
+ struct snd_card *card;
+ struct snd_pcm *pcm;
+ struct snd_pcm_substream *substream;
+ struct at73c213_board_info *board;
+ int irq;
+ int period;
+ unsigned long bitrate;
+ struct clk *bitclk;
+ struct ssc_device *ssc;
+ struct spi_device *spi;
+ u8 spi_wbuffer[2];
+ u8 spi_rbuffer[2];
+ /* Image of the SPI registers in AT73C213. */
+ u8 reg_image[18];
+ /* Protect registers against concurrent access. */
+ spinlock_t lock;
+};
+
+#define get_chip(card) ((struct snd_at73c213 *)card->private_data)
+
+static int
+snd_at73c213_write_reg(struct snd_at73c213 *chip, u8 reg, u8 val)
+{
+ struct spi_message msg;
+ struct spi_transfer msg_xfer = {
+ .len = 2,
+ .cs_change = 0,
+ };
+ int retval;
+
+ spi_message_init(&msg);
+
+ chip->spi_wbuffer[0] = reg;
+ chip->spi_wbuffer[1] = val;
+
+ msg_xfer.tx_buf = chip->spi_wbuffer;
+ msg_xfer.rx_buf = chip->spi_rbuffer;
+ spi_message_add_tail(&msg_xfer, &msg);
+
+ retval = spi_sync(chip->spi, &msg);
+
+ if (!retval)
+ chip->reg_image[reg] = val;
+
+ return retval;
+}
+
+static struct snd_pcm_hardware snd_at73c213_playback_hw = {
+ .info = SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_BLOCK_TRANSFER,
+ .formats = SNDRV_PCM_FMTBIT_S16_BE,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .rate_min = 8000, /* Replaced by chip->bitrate later. */
+ .rate_max = 50000, /* Replaced by chip->bitrate later. */
+ .channels_min = 2,
+ .channels_max = 2,
+ .buffer_bytes_max = 64 * 1024 - 1,
+ .period_bytes_min = 512,
+ .period_bytes_max = 64 * 1024 - 1,
+ .periods_min = 4,
+ .periods_max = 1024,
+};
+
+/*
+ * Calculate and set bitrate and divisions.
+ */
+static int snd_at73c213_set_bitrate(struct snd_at73c213 *chip)
+{
+ unsigned long ssc_rate = clk_get_rate(chip->ssc->clk);
+ unsigned long dac_rate_new, ssc_div, status;
+ unsigned long ssc_div_max, ssc_div_min;
+ int max_tries;
+
+ /*
+ * We connect two clocks here, picking divisors so the I2S clocks
+ * out data at the same rate the DAC clocks it in ... and as close
+ * as practical to the desired target rate.
+ *
+ * The DAC master clock (MCLK) is programmable, and is either 256
+ * or (not here) 384 times the I2S output clock (BCLK).
+ */
+
+ /* SSC clock / (bitrate * stereo * 16-bit). */
+ ssc_div = ssc_rate / (BITRATE_TARGET * 2 * 16);
+ ssc_div_min = ssc_rate / (BITRATE_MAX * 2 * 16);
+ ssc_div_max = ssc_rate / (BITRATE_MIN * 2 * 16);
+ max_tries = (ssc_div_max - ssc_div_min) / 2;
+
+ if (max_tries < 1)
+ max_tries = 1;
+
+ /* ssc_div must be a power of 2. */
+ ssc_div = (ssc_div + 1) & ~1UL;
+
+ if ((ssc_rate / (ssc_div * 2 * 16)) < BITRATE_MIN) {
+ ssc_div -= 2;
+ if ((ssc_rate / (ssc_div * 2 * 16)) > BITRATE_MAX)
+ return -ENXIO;
+ }
+
+ /* Search for a possible bitrate. */
+ do {
+ /* SSC clock / (ssc divider * 16-bit * stereo). */
+ if ((ssc_rate / (ssc_div * 2 * 16)) < BITRATE_MIN)
+ return -ENXIO;
+
+ /* 256 / (2 * 16) = 8 */
+ dac_rate_new = 8 * (ssc_rate / ssc_div);
+
+ status = clk_round_rate(chip->board->dac_clk, dac_rate_new);
+ if (status < 0)
+ return status;
+
+ /* Ignore difference smaller than 256 Hz. */
+ if ((status/256) == (dac_rate_new/256))
+ goto set_rate;
+
+ ssc_div += 2;
+ } while (--max_tries);
+
+ /* Not able to find a valid bitrate. */
+ return -ENXIO;
+
+set_rate:
+ status = clk_set_rate(chip->board->dac_clk, status);
+ if (status < 0)
+ return status;
+
+ /* Set divider in SSC device. */
+ ssc_writel(chip->ssc->regs, CMR, ssc_div/2);
+
+ /* SSC clock / (ssc divider * 16-bit * stereo). */
+ chip->bitrate = ssc_rate / (ssc_div * 16 * 2);
+
+ dev_info(&chip->spi->dev,
+ "at73c213: supported bitrate is %lu (%lu divider)\n",
+ chip->bitrate, ssc_div);
+
+ return 0;
+}
+
+static int snd_at73c213_pcm_open(struct snd_pcm_substream *substream)
+{
+ struct snd_at73c213 *chip = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+
+ snd_at73c213_playback_hw.rate_min = chip->bitrate;
+ snd_at73c213_playback_hw.rate_max = chip->bitrate;
+ runtime->hw = snd_at73c213_playback_hw;
+ chip->substream = substream;
+
+ return 0;
+}
+
+static int snd_at73c213_pcm_close(struct snd_pcm_substream *substream)
+{
+ struct snd_at73c213 *chip = snd_pcm_substream_chip(substream);
+ chip->substream = NULL;
+ return 0;
+}
+
+static int snd_at73c213_pcm_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ return snd_pcm_lib_malloc_pages(substream,
+ params_buffer_bytes(hw_params));
+}
+
+static int snd_at73c213_pcm_hw_free(struct snd_pcm_substream *substream)
+{
+ return snd_pcm_lib_free_pages(substream);
+}
+
+static int snd_at73c213_pcm_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_at73c213 *chip = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ int block_size;
+
+ block_size = frames_to_bytes(runtime, runtime->period_size);
+
+ chip->period = 0;
+
+ ssc_writel(chip->ssc->regs, PDC_TPR,
+ (long)runtime->dma_addr);
+ ssc_writel(chip->ssc->regs, PDC_TCR, runtime->period_size * 2);
+ ssc_writel(chip->ssc->regs, PDC_TNPR,
+ (long)runtime->dma_addr + block_size);
+ ssc_writel(chip->ssc->regs, PDC_TNCR, runtime->period_size * 2);
+
+ return 0;
+}
+
+static int snd_at73c213_pcm_trigger(struct snd_pcm_substream *substream,
+ int cmd)
+{
+ struct snd_at73c213 *chip = snd_pcm_substream_chip(substream);
+ int retval = 0;
+
+ spin_lock(&chip->lock);
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ ssc_writel(chip->ssc->regs, IER, SSC_BIT(IER_ENDTX));
+ ssc_writel(chip->ssc->regs, PDC_PTCR, SSC_BIT(PDC_PTCR_TXTEN));
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ ssc_writel(chip->ssc->regs, PDC_PTCR, SSC_BIT(PDC_PTCR_TXTDIS));
+ ssc_writel(chip->ssc->regs, IDR, SSC_BIT(IDR_ENDTX));
+ break;
+ default:
+ dev_dbg(&chip->spi->dev, "spurious command %x\n", cmd);
+ retval = -EINVAL;
+ break;
+ }
+
+ spin_unlock(&chip->lock);
+
+ return retval;
+}
+
+static snd_pcm_uframes_t
+snd_at73c213_pcm_pointer(struct snd_pcm_substream *substream)
+{
+ struct snd_at73c213 *chip = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ snd_pcm_uframes_t pos;
+ unsigned long bytes;
+
+ bytes = ssc_readl(chip->ssc->regs, PDC_TPR)
+ - (unsigned long)runtime->dma_addr;
+
+ pos = bytes_to_frames(runtime, bytes);
+ if (pos >= runtime->buffer_size)
+ pos -= runtime->buffer_size;
+
+ return pos;
+}
+
+static struct snd_pcm_ops at73c213_playback_ops = {
+ .open = snd_at73c213_pcm_open,
+ .close = snd_at73c213_pcm_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_at73c213_pcm_hw_params,
+ .hw_free = snd_at73c213_pcm_hw_free,
+ .prepare = snd_at73c213_pcm_prepare,
+ .trigger = snd_at73c213_pcm_trigger,
+ .pointer = snd_at73c213_pcm_pointer,
+};
+
+static void snd_at73c213_pcm_free(struct snd_pcm *pcm)
+{
+ struct snd_at73c213 *chip = snd_pcm_chip(pcm);
+ if (chip->pcm) {
+ snd_pcm_lib_preallocate_free_for_all(chip->pcm);
+ chip->pcm = NULL;
+ }
+}
+
+static int __devinit snd_at73c213_pcm_new(struct snd_at73c213 *chip, int device)
+{
+ struct snd_pcm *pcm;
+ int retval;
+
+ retval = snd_pcm_new(chip->card, chip->card->shortname,
+ device, 1, 0, &pcm);
+ if (retval < 0)
+ goto out;
+
+ pcm->private_data = chip;
+ pcm->private_free = snd_at73c213_pcm_free;
+ pcm->info_flags = SNDRV_PCM_INFO_BLOCK_TRANSFER;
+ strcpy(pcm->name, "at73c213");
+ chip->pcm = pcm;
+
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &at73c213_playback_ops);
+
+ retval = snd_pcm_lib_preallocate_pages_for_all(chip->pcm,
+ SNDRV_DMA_TYPE_DEV, &chip->ssc->pdev->dev,
+ 64 * 1024, 64 * 1024);
+out:
+ return retval;
+}
+
+static irqreturn_t snd_at73c213_interrupt(int irq, void *dev_id)
+{
+ struct snd_at73c213 *chip = dev_id;
+ struct snd_pcm_runtime *runtime = chip->substream->runtime;
+ u32 status;
+ int offset;
+ int block_size;
+ int next_period;
+ int retval = IRQ_NONE;
+
+ spin_lock(&chip->lock);
+
+ block_size = frames_to_bytes(runtime, runtime->period_size);
+ status = ssc_readl(chip->ssc->regs, IMR);
+
+ if (status & SSC_BIT(IMR_ENDTX)) {
+ chip->period++;
+ if (chip->period == runtime->periods)
+ chip->period = 0;
+ next_period = chip->period + 1;
+ if (next_period == runtime->periods)
+ next_period = 0;
+
+ offset = block_size * next_period;
+
+ ssc_writel(chip->ssc->regs, PDC_TNPR,
+ (long)runtime->dma_addr + offset);
+ ssc_writel(chip->ssc->regs, PDC_TNCR, runtime->period_size * 2);
+ retval = IRQ_HANDLED;
+ }
+
+ ssc_readl(chip->ssc->regs, IMR);
+ spin_unlock(&chip->lock);
+
+ if (status & SSC_BIT(IMR_ENDTX))
+ snd_pcm_period_elapsed(chip->substream);
+
+ return retval;
+}
+
+/*
+ * Mixer functions.
+ */
+static int snd_at73c213_mono_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol);
+ int reg = kcontrol->private_value & 0xff;
+ int shift = (kcontrol->private_value >> 8) & 0xff;
+ int mask = (kcontrol->private_value >> 16) & 0xff;
+ int invert = (kcontrol->private_value >> 24) & 0xff;
+
+ spin_lock_irq(&chip->lock);
+
+ ucontrol->value.integer.value[0] = (chip->reg_image[reg] >> shift) & mask;
+
+ if (invert)
+ ucontrol->value.integer.value[0] =
+ (mask - ucontrol->value.integer.value[0]);
+
+ spin_unlock_irq(&chip->lock);
+
+ return 0;
+}
+
+static int snd_at73c213_mono_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol);
+ int reg = kcontrol->private_value & 0xff;
+ int shift = (kcontrol->private_value >> 8) & 0xff;
+ int mask = (kcontrol->private_value >> 16) & 0xff;
+ int invert = (kcontrol->private_value >> 24) & 0xff;
+ int change, retval;
+ unsigned short val;
+
+ val = (ucontrol->value.integer.value[0] & mask);
+ if (invert)
+ val = mask - val;
+ val <<= shift;
+
+ spin_lock_irq(&chip->lock);
+
+ val = (chip->reg_image[reg] & ~(mask << shift)) | val;
+ change = val != chip->reg_image[reg];
+ retval = snd_at73c213_write_reg(chip, reg, val);
+
+ spin_unlock_irq(&chip->lock);
+
+ if (retval)
+ return retval;
+
+ return change;
+}
+
+static int snd_at73c213_stereo_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ int mask = (kcontrol->private_value >> 24) & 0xff;
+
+ if (mask == 1)
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+ else
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+
+ uinfo->count = 2;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = mask;
+
+ return 0;
+}
+
+static int snd_at73c213_stereo_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol);
+ int left_reg = kcontrol->private_value & 0xff;
+ int right_reg = (kcontrol->private_value >> 8) & 0xff;
+ int shift_left = (kcontrol->private_value >> 16) & 0x07;
+ int shift_right = (kcontrol->private_value >> 19) & 0x07;
+ int mask = (kcontrol->private_value >> 24) & 0xff;
+ int invert = (kcontrol->private_value >> 22) & 1;
+
+ spin_lock_irq(&chip->lock);
+
+ ucontrol->value.integer.value[0] =
+ (chip->reg_image[left_reg] >> shift_left) & mask;
+ ucontrol->value.integer.value[1] =
+ (chip->reg_image[right_reg] >> shift_right) & mask;
+
+ if (invert) {
+ ucontrol->value.integer.value[0] =
+ (mask - ucontrol->value.integer.value[0]);
+ ucontrol->value.integer.value[1] =
+ (mask - ucontrol->value.integer.value[1]);
+ }
+
+ spin_unlock_irq(&chip->lock);
+
+ return 0;
+}
+
+static int snd_at73c213_stereo_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol);
+ int left_reg = kcontrol->private_value & 0xff;
+ int right_reg = (kcontrol->private_value >> 8) & 0xff;
+ int shift_left = (kcontrol->private_value >> 16) & 0x07;
+ int shift_right = (kcontrol->private_value >> 19) & 0x07;
+ int mask = (kcontrol->private_value >> 24) & 0xff;
+ int invert = (kcontrol->private_value >> 22) & 1;
+ int change, retval;
+ unsigned short val1, val2;
+
+ val1 = ucontrol->value.integer.value[0] & mask;
+ val2 = ucontrol->value.integer.value[1] & mask;
+ if (invert) {
+ val1 = mask - val1;
+ val2 = mask - val2;
+ }
+ val1 <<= shift_left;
+ val2 <<= shift_right;
+
+ spin_lock_irq(&chip->lock);
+
+ val1 = (chip->reg_image[left_reg] & ~(mask << shift_left)) | val1;
+ val2 = (chip->reg_image[right_reg] & ~(mask << shift_right)) | val2;
+ change = val1 != chip->reg_image[left_reg]
+ || val2 != chip->reg_image[right_reg];
+ retval = snd_at73c213_write_reg(chip, left_reg, val1);
+ if (retval) {
+ spin_unlock_irq(&chip->lock);
+ goto out;
+ }
+ retval = snd_at73c213_write_reg(chip, right_reg, val2);
+ if (retval) {
+ spin_unlock_irq(&chip->lock);
+ goto out;
+ }
+
+ spin_unlock_irq(&chip->lock);
+
+ return change;
+
+out:
+ return retval;
+}
+
+static int snd_at73c213_mono_switch_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = 1;
+
+ return 0;
+}
+
+static int snd_at73c213_mono_switch_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol);
+ int reg = kcontrol->private_value & 0xff;
+ int shift = (kcontrol->private_value >> 8) & 0xff;
+ int invert = (kcontrol->private_value >> 24) & 0xff;
+
+ spin_lock_irq(&chip->lock);
+
+ ucontrol->value.integer.value[0] = (chip->reg_image[reg] >> shift) & 0x01;
+
+ if (invert)
+ ucontrol->value.integer.value[0] =
+ (0x01 - ucontrol->value.integer.value[0]);
+
+ spin_unlock_irq(&chip->lock);
+
+ return 0;
+}
+
+static int snd_at73c213_mono_switch_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol);
+ int reg = kcontrol->private_value & 0xff;
+ int shift = (kcontrol->private_value >> 8) & 0xff;
+ int mask = (kcontrol->private_value >> 16) & 0xff;
+ int invert = (kcontrol->private_value >> 24) & 0xff;
+ int change, retval;
+ unsigned short val;
+
+ if (ucontrol->value.integer.value[0])
+ val = mask;
+ else
+ val = 0;
+
+ if (invert)
+ val = mask - val;
+ val <<= shift;
+
+ spin_lock_irq(&chip->lock);
+
+ val |= (chip->reg_image[reg] & ~(mask << shift));
+ change = val != chip->reg_image[reg];
+
+ retval = snd_at73c213_write_reg(chip, reg, val);
+
+ spin_unlock_irq(&chip->lock);
+
+ if (retval)
+ return retval;
+
+ return change;
+}
+
+static int snd_at73c213_pa_volume_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = ((kcontrol->private_value >> 16) & 0xff) - 1;
+
+ return 0;
+}
+
+static int snd_at73c213_line_capture_volume_info(
+ struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 2;
+ /* When inverted will give values 0x10001 => 0. */
+ uinfo->value.integer.min = 14;
+ uinfo->value.integer.max = 31;
+
+ return 0;
+}
+
+static int snd_at73c213_aux_capture_volume_info(
+ struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ /* When inverted will give values 0x10001 => 0. */
+ uinfo->value.integer.min = 14;
+ uinfo->value.integer.max = 31;
+
+ return 0;
+}
+
+#define AT73C213_MONO_SWITCH(xname, xindex, reg, shift, mask, invert) \
+{ \
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
+ .name = xname, \
+ .index = xindex, \
+ .info = snd_at73c213_mono_switch_info, \
+ .get = snd_at73c213_mono_switch_get, \
+ .put = snd_at73c213_mono_switch_put, \
+ .private_value = (reg | (shift << 8) | (mask << 16) | (invert << 24)) \
+}
+
+#define AT73C213_STEREO(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
+{ \
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
+ .name = xname, \
+ .index = xindex, \
+ .info = snd_at73c213_stereo_info, \
+ .get = snd_at73c213_stereo_get, \
+ .put = snd_at73c213_stereo_put, \
+ .private_value = (left_reg | (right_reg << 8) \
+ | (shift_left << 16) | (shift_right << 19) \
+ | (mask << 24) | (invert << 22)) \
+}
+
+static struct snd_kcontrol_new snd_at73c213_controls[] __devinitdata = {
+AT73C213_STEREO("Master Playback Volume", 0, DAC_LMPG, DAC_RMPG, 0, 0, 0x1f, 1),
+AT73C213_STEREO("Master Playback Switch", 0, DAC_LMPG, DAC_RMPG, 5, 5, 1, 1),
+AT73C213_STEREO("PCM Playback Volume", 0, DAC_LLOG, DAC_RLOG, 0, 0, 0x1f, 1),
+AT73C213_STEREO("PCM Playback Switch", 0, DAC_LLOG, DAC_RLOG, 5, 5, 1, 1),
+AT73C213_MONO_SWITCH("Mono PA Playback Switch", 0, DAC_CTRL, DAC_CTRL_ONPADRV, 0x01, 0),
+{
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "PA Playback Volume",
+ .index = 0,
+ .info = snd_at73c213_pa_volume_info,
+ .get = snd_at73c213_mono_get,
+ .put = snd_at73c213_mono_put,
+ .private_value = PA_CTRL | (PA_CTRL_APAGAIN << 8) | (0x0f << 16) | (1 << 24),
+},
+AT73C213_MONO_SWITCH("PA High Gain Playback Switch", 0, PA_CTRL, PA_CTRL_APALP, 0x01, 1),
+AT73C213_MONO_SWITCH("PA Playback Switch", 0, PA_CTRL, PA_CTRL_APAON, 0x01, 0),
+{
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Aux Capture Volume",
+ .index = 0,
+ .info = snd_at73c213_aux_capture_volume_info,
+ .get = snd_at73c213_mono_get,
+ .put = snd_at73c213_mono_put,
+ .private_value = DAC_AUXG | (0 << 8) | (0x1f << 16) | (1 << 24),
+},
+AT73C213_MONO_SWITCH("Aux Capture Switch", 0, DAC_CTRL, DAC_CTRL_ONAUXIN, 0x01, 0),
+{
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Line Capture Volume",
+ .index = 0,
+ .info = snd_at73c213_line_capture_volume_info,
+ .get = snd_at73c213_stereo_get,
+ .put = snd_at73c213_stereo_put,
+ .private_value = DAC_LLIG | (DAC_RLIG << 8) | (0 << 16) | (0 << 19)
+ | (0x1f << 24) | (1 << 22),
+},
+AT73C213_MONO_SWITCH("Line Capture Switch", 0, DAC_CTRL, 0, 0x03, 0),
+};
+
+static int __devinit snd_at73c213_mixer(struct snd_at73c213 *chip)
+{
+ struct snd_card *card;
+ int errval, idx;
+
+ if (chip == NULL || chip->pcm == NULL)
+ return -EINVAL;
+
+ card = chip->card;
+
+ strcpy(card->mixername, chip->pcm->name);
+
+ for (idx = 0; idx < ARRAY_SIZE(snd_at73c213_controls); idx++) {
+ errval = snd_ctl_add(card,
+ snd_ctl_new1(&snd_at73c213_controls[idx],
+ chip));
+ if (errval < 0)
+ goto cleanup;
+ }
+
+ return 0;
+
+cleanup:
+ for (idx = 1; idx < ARRAY_SIZE(snd_at73c213_controls) + 1; idx++) {
+ struct snd_kcontrol *kctl;
+ kctl = snd_ctl_find_numid(card, idx);
+ if (kctl)
+ snd_ctl_remove(card, kctl);
+ }
+ return errval;
+}
+
+/*
+ * Device functions
+ */
+static int snd_at73c213_ssc_init(struct snd_at73c213 *chip)
+{
+ /*
+ * Continuous clock output.
+ * Starts on falling TF.
+ * Delay 1 cycle (1 bit).
+ * Periode is 16 bit (16 - 1).
+ */
+ ssc_writel(chip->ssc->regs, TCMR,
+ SSC_BF(TCMR_CKO, 1)
+ | SSC_BF(TCMR_START, 4)
+ | SSC_BF(TCMR_STTDLY, 1)
+ | SSC_BF(TCMR_PERIOD, 16 - 1));
+ /*
+ * Data length is 16 bit (16 - 1).
+ * Transmit MSB first.
+ * Transmit 2 words each transfer.
+ * Frame sync length is 16 bit (16 - 1).
+ * Frame starts on negative pulse.
+ */
+ ssc_writel(chip->ssc->regs, TFMR,
+ SSC_BF(TFMR_DATLEN, 16 - 1)
+ | SSC_BIT(TFMR_MSBF)
+ | SSC_BF(TFMR_DATNB, 1)
+ | SSC_BF(TFMR_FSLEN, 16 - 1)
+ | SSC_BF(TFMR_FSOS, 1));
+
+ return 0;
+}
+
+static int snd_at73c213_chip_init(struct snd_at73c213 *chip)
+{
+ int retval;
+ unsigned char dac_ctrl = 0;
+
+ retval = snd_at73c213_set_bitrate(chip);
+ if (retval)
+ goto out;
+
+ /* Enable DAC master clock. */
+ clk_enable(chip->board->dac_clk);
+
+ /* Initialize at73c213 on SPI bus. */
+ retval = snd_at73c213_write_reg(chip, DAC_RST, 0x04);
+ if (retval)
+ goto out_clk;
+ msleep(1);
+ retval = snd_at73c213_write_reg(chip, DAC_RST, 0x03);
+ if (retval)
+ goto out_clk;
+
+ /* Precharge everything. */
+ retval = snd_at73c213_write_reg(chip, DAC_PRECH, 0xff);
+ if (retval)
+ goto out_clk;
+ retval = snd_at73c213_write_reg(chip, PA_CTRL, (1<<PA_CTRL_APAPRECH));
+ if (retval)
+ goto out_clk;
+ retval = snd_at73c213_write_reg(chip, DAC_CTRL,
+ (1<<DAC_CTRL_ONLNOL) | (1<<DAC_CTRL_ONLNOR));
+ if (retval)
+ goto out_clk;
+
+ msleep(50);
+
+ /* Stop precharging PA. */
+ retval = snd_at73c213_write_reg(chip, PA_CTRL,
+ (1<<PA_CTRL_APALP) | 0x0f);
+ if (retval)
+ goto out_clk;
+
+ msleep(450);
+
+ /* Stop precharging DAC, turn on master power. */
+ retval = snd_at73c213_write_reg(chip, DAC_PRECH, (1<<DAC_PRECH_ONMSTR));
+ if (retval)
+ goto out_clk;
+
+ msleep(1);
+
+ /* Turn on DAC. */
+ dac_ctrl = (1<<DAC_CTRL_ONDACL) | (1<<DAC_CTRL_ONDACR)
+ | (1<<DAC_CTRL_ONLNOL) | (1<<DAC_CTRL_ONLNOR);
+
+ retval = snd_at73c213_write_reg(chip, DAC_CTRL, dac_ctrl);
+ if (retval)
+ goto out_clk;
+
+ /* Mute sound. */
+ retval = snd_at73c213_write_reg(chip, DAC_LMPG, 0x3f);
+ if (retval)
+ goto out_clk;
+ retval = snd_at73c213_write_reg(chip, DAC_RMPG, 0x3f);
+ if (retval)
+ goto out_clk;
+ retval = snd_at73c213_write_reg(chip, DAC_LLOG, 0x3f);
+ if (retval)
+ goto out_clk;
+ retval = snd_at73c213_write_reg(chip, DAC_RLOG, 0x3f);
+ if (retval)
+ goto out_clk;
+ retval = snd_at73c213_write_reg(chip, DAC_LLIG, 0x11);
+ if (retval)
+ goto out_clk;
+ retval = snd_at73c213_write_reg(chip, DAC_RLIG, 0x11);
+ if (retval)
+ goto out_clk;
+ retval = snd_at73c213_write_reg(chip, DAC_AUXG, 0x11);
+ if (retval)
+ goto out_clk;
+
+ /* Enable I2S device, i.e. clock output. */
+ ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXEN));
+
+ goto out;
+
+out_clk:
+ clk_disable(chip->board->dac_clk);
+out:
+ return retval;
+}
+
+static int snd_at73c213_dev_free(struct snd_device *device)
+{
+ struct snd_at73c213 *chip = device->device_data;
+
+ ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS));
+ if (chip->irq >= 0) {
+ free_irq(chip->irq, chip);
+ chip->irq = -1;
+ }
+
+ return 0;
+}
+
+static int __devinit snd_at73c213_dev_init(struct snd_card *card,
+ struct spi_device *spi)
+{
+ static struct snd_device_ops ops = {
+ .dev_free = snd_at73c213_dev_free,
+ };
+ struct snd_at73c213 *chip = get_chip(card);
+ int irq, retval;
+
+ irq = chip->ssc->irq;
+ if (irq < 0)
+ return irq;
+
+ spin_lock_init(&chip->lock);
+ chip->card = card;
+ chip->irq = -1;
+
+ retval = request_irq(irq, snd_at73c213_interrupt, 0, "at73c213", chip);
+ if (retval) {
+ dev_dbg(&chip->spi->dev, "unable to request irq %d\n", irq);
+ goto out;
+ }
+ chip->irq = irq;
+
+ memcpy(&chip->reg_image, &snd_at73c213_original_image,
+ sizeof(snd_at73c213_original_image));
+
+ retval = snd_at73c213_ssc_init(chip);
+ if (retval)
+ goto out_irq;
+
+ retval = snd_at73c213_chip_init(chip);
+ if (retval)
+ goto out_irq;
+
+ retval = snd_at73c213_pcm_new(chip, 0);
+ if (retval)
+ goto out_irq;
+
+ retval = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
+ if (retval)
+ goto out_irq;
+
+ retval = snd_at73c213_mixer(chip);
+ if (retval)
+ goto out_snd_dev;
+
+ snd_card_set_dev(card, &spi->dev);
+
+ goto out;
+
+out_snd_dev:
+ snd_device_free(card, chip);
+out_irq:
+ free_irq(chip->irq, chip);
+ chip->irq = -1;
+out:
+ return retval;
+}
+
+static int snd_at73c213_probe(struct spi_device *spi)
+{
+ struct snd_card *card;
+ struct snd_at73c213 *chip;
+ struct at73c213_board_info *board;
+ int retval;
+ char id[16];
+
+ board = spi->dev.platform_data;
+ if (!board) {
+ dev_dbg(&spi->dev, "no platform_data\n");
+ return -ENXIO;
+ }
+
+ if (!board->dac_clk) {
+ dev_dbg(&spi->dev, "no DAC clk\n");
+ return -ENXIO;
+ }
+
+ if (IS_ERR(board->dac_clk)) {
+ dev_dbg(&spi->dev, "no DAC clk\n");
+ return PTR_ERR(board->dac_clk);
+ }
+
+ retval = -ENOMEM;
+
+ /* Allocate "card" using some unused identifiers. */
+ snprintf(id, sizeof id, "at73c213_%d", board->ssc_id);
+ card = snd_card_new(-1, id, THIS_MODULE, sizeof(struct snd_at73c213));
+ if (!card)
+ goto out;
+
+ chip = card->private_data;
+ chip->spi = spi;
+ chip->board = board;
+
+ chip->ssc = ssc_request(board->ssc_id);
+ if (IS_ERR(chip->ssc)) {
+ dev_dbg(&spi->dev, "could not get ssc%d device\n",
+ board->ssc_id);
+ retval = PTR_ERR(chip->ssc);
+ goto out_card;
+ }
+
+ retval = snd_at73c213_dev_init(card, spi);
+ if (retval)
+ goto out_ssc;
+
+ strcpy(card->driver, "at73c213");
+ strcpy(card->shortname, board->shortname);
+ sprintf(card->longname, "%s on irq %d", card->shortname, chip->irq);
+
+ retval = snd_card_register(card);
+ if (retval)
+ goto out_ssc;
+
+ dev_set_drvdata(&spi->dev, card);
+
+ goto out;
+
+out_ssc:
+ ssc_free(chip->ssc);
+out_card:
+ snd_card_free(card);
+out:
+ return retval;
+}
+
+static int __devexit snd_at73c213_remove(struct spi_device *spi)
+{
+ struct snd_card *card = dev_get_drvdata(&spi->dev);
+ struct snd_at73c213 *chip = card->private_data;
+ int retval;
+
+ /* Stop playback. */
+ ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS));
+
+ /* Mute sound. */
+ retval = snd_at73c213_write_reg(chip, DAC_LMPG, 0x3f);
+ if (retval)
+ goto out;
+ retval = snd_at73c213_write_reg(chip, DAC_RMPG, 0x3f);
+ if (retval)
+ goto out;
+ retval = snd_at73c213_write_reg(chip, DAC_LLOG, 0x3f);
+ if (retval)
+ goto out;
+ retval = snd_at73c213_write_reg(chip, DAC_RLOG, 0x3f);
+ if (retval)
+ goto out;
+ retval = snd_at73c213_write_reg(chip, DAC_LLIG, 0x11);
+ if (retval)
+ goto out;
+ retval = snd_at73c213_write_reg(chip, DAC_RLIG, 0x11);
+ if (retval)
+ goto out;
+ retval = snd_at73c213_write_reg(chip, DAC_AUXG, 0x11);
+ if (retval)
+ goto out;
+
+ /* Turn off PA. */
+ retval = snd_at73c213_write_reg(chip, PA_CTRL, (chip->reg_image[PA_CTRL]|0x0f));
+ if (retval)
+ goto out;
+ msleep(10);
+ retval = snd_at73c213_write_reg(chip, PA_CTRL, (1<<PA_CTRL_APALP)|0x0f);
+ if (retval)
+ goto out;
+
+ /* Turn off external DAC. */
+ retval = snd_at73c213_write_reg(chip, DAC_CTRL, 0x0c);
+ if (retval)
+ goto out;
+ msleep(2);
+ retval = snd_at73c213_write_reg(chip, DAC_CTRL, 0x00);
+ if (retval)
+ goto out;
+
+ /* Turn off master power. */
+ retval = snd_at73c213_write_reg(chip, DAC_PRECH, 0x00);
+ if (retval)
+ goto out;
+
+out:
+ /* Stop DAC master clock. */
+ clk_disable(chip->board->dac_clk);
+
+ ssc_free(chip->ssc);
+ snd_card_free(card);
+ dev_set_drvdata(&spi->dev, NULL);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int snd_at73c213_suspend(struct spi_device *spi, pm_message_t msg)
+{
+ struct snd_card *card = dev_get_drvdata(&spi->dev);
+ struct snd_at73c213 *chip = card->private_data;
+
+ ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS));
+ clk_disable(chip->board->dac_clk);
+
+ return 0;
+}
+
+static int snd_at73c213_resume(struct spi_device *spi)
+{
+ struct snd_card *card = dev_get_drvdata(&spi->dev);
+ struct snd_at73c213 *chip = card->private_data;
+
+ clk_enable(chip->board->dac_clk);
+ ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXEN));
+
+ return 0;
+}
+#else
+#define snd_at73c213_suspend NULL
+#define snd_at73c213_resume NULL
+#endif
+
+static struct spi_driver at73c213_driver = {
+ .driver = {
+ .name = "at73c213",
+ },
+ .probe = snd_at73c213_probe,
+ .suspend = snd_at73c213_suspend,
+ .resume = snd_at73c213_resume,
+ .remove = __devexit_p(snd_at73c213_remove),
+};
+
+static int __init at73c213_init(void)
+{
+ return spi_register_driver(&at73c213_driver);
+}
+module_init(at73c213_init);
+
+static void __exit at73c213_exit(void)
+{
+ spi_unregister_driver(&at73c213_driver);
+}
+module_exit(at73c213_exit);
+
+MODULE_AUTHOR("Hans-Christian Egtvedt <hcegtvedt@atmel.com>");
+MODULE_DESCRIPTION("Sound driver for AT73C213 with Atmel SSC");
+MODULE_LICENSE("GPL");
diff --git a/sound/spi/at73c213.h b/sound/spi/at73c213.h
new file mode 100644
index 0000000..fd8b372
--- /dev/null
+++ b/sound/spi/at73c213.h
@@ -0,0 +1,119 @@
+/*
+ * Driver for the AT73C213 16-bit stereo DAC on Atmel ATSTK1000
+ *
+ * Copyright (C) 2006 - 2007 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * The full GNU General Public License is included in this
+ * distribution in the file called COPYING.
+ */
+
+#ifndef _SND_AT73C213_H
+#define _SND_AT73C213_H
+
+/* DAC control register */
+#define DAC_CTRL 0x00
+#define DAC_CTRL_ONPADRV 7
+#define DAC_CTRL_ONAUXIN 6
+#define DAC_CTRL_ONDACR 5
+#define DAC_CTRL_ONDACL 4
+#define DAC_CTRL_ONLNOR 3
+#define DAC_CTRL_ONLNOL 2
+#define DAC_CTRL_ONLNIR 1
+#define DAC_CTRL_ONLNIL 0
+
+/* DAC left line in gain register */
+#define DAC_LLIG 0x01
+#define DAC_LLIG_LLIG 0
+
+/* DAC right line in gain register */
+#define DAC_RLIG 0x02
+#define DAC_RLIG_RLIG 0
+
+/* DAC Left Master Playback Gain Register */
+#define DAC_LMPG 0x03
+#define DAC_LMPG_LMPG 0
+
+/* DAC Right Master Playback Gain Register */
+#define DAC_RMPG 0x04
+#define DAC_RMPG_RMPG 0
+
+/* DAC Left Line Out Gain Register */
+#define DAC_LLOG 0x05
+#define DAC_LLOG_LLOG 0
+
+/* DAC Right Line Out Gain Register */
+#define DAC_RLOG 0x06
+#define DAC_RLOG_RLOG 0
+
+/* DAC Output Level Control Register */
+#define DAC_OLC 0x07
+#define DAC_OLC_RSHORT 7
+#define DAC_OLC_ROLC 4
+#define DAC_OLC_LSHORT 3
+#define DAC_OLC_LOLC 0
+
+/* DAC Mixer Control Register */
+#define DAC_MC 0x08
+#define DAC_MC_INVR 5
+#define DAC_MC_INVL 4
+#define DAC_MC_RMSMIN2 3
+#define DAC_MC_RMSMIN1 2
+#define DAC_MC_LMSMIN2 1
+#define DAC_MC_LMSMIN1 0
+
+/* DAC Clock and Sampling Frequency Control Register */
+#define DAC_CSFC 0x09
+#define DAC_CSFC_OVRSEL 4
+
+/* DAC Miscellaneous Register */
+#define DAC_MISC 0x0A
+#define DAC_MISC_VCMCAPSEL 7
+#define DAC_MISC_DINTSEL 4
+#define DAC_MISC_DITHEN 3
+#define DAC_MISC_DEEMPEN 2
+#define DAC_MISC_NBITS 0
+
+/* DAC Precharge Control Register */
+#define DAC_PRECH 0x0C
+#define DAC_PRECH_PRCHGPDRV 7
+#define DAC_PRECH_PRCHGAUX1 6
+#define DAC_PRECH_PRCHGLNOR 5
+#define DAC_PRECH_PRCHGLNOL 4
+#define DAC_PRECH_PRCHGLNIR 3
+#define DAC_PRECH_PRCHGLNIL 2
+#define DAC_PRECH_PRCHG 1
+#define DAC_PRECH_ONMSTR 0
+
+/* DAC Auxiliary Input Gain Control Register */
+#define DAC_AUXG 0x0D
+#define DAC_AUXG_AUXG 0
+
+/* DAC Reset Register */
+#define DAC_RST 0x10
+#define DAC_RST_RESMASK 2
+#define DAC_RST_RESFILZ 1
+#define DAC_RST_RSTZ 0
+
+/* Power Amplifier Control Register */
+#define PA_CTRL 0x11
+#define PA_CTRL_APAON 6
+#define PA_CTRL_APAPRECH 5
+#define PA_CTRL_APALP 4
+#define PA_CTRL_APAGAIN 0
+
+#endif /* _SND_AT73C213_H */
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