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brcm47xx: use libgpio instaed of implementing the gpio interface ourself.

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32992 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
hauke
2012-08-04 19:46:25 +00:00
parent 039f179551
commit 1d6c42df96
13 changed files with 810 additions and 377 deletions
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4
target/linux/brcm47xx/config-3.3
View File

@@ -1,6 +1,7 @@
CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE=y
CONFIG_ARCH_DISCARD_MEMBLOCK=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_REQUIRE_GPIOLIB=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
# CONFIG_ARPD is not set
CONFIG_B44=y
@@ -15,6 +16,7 @@ CONFIG_BCMA=y
CONFIG_BCMA_BLOCKIO=y
CONFIG_BCMA_DEBUG=y
CONFIG_BCMA_DRIVER_GMAC_CMN=y
CONFIG_BCMA_DRIVER_GPIO=y
CONFIG_BCMA_DRIVER_MIPS=y
CONFIG_BCMA_DRIVER_PCI_HOSTMODE=y
CONFIG_BCMA_HOST_PCI=y
@@ -50,6 +52,8 @@ CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_GENERIC_GPIO=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_PCI_IOMAP=y
# CONFIG_GENERIC_PWM is not set
CONFIG_GPIOLIB=y
CONFIG_HARDWARE_WATCHPOINTS=y
CONFIG_HAS_DMA=y
CONFIG_HAS_IOMEM=y

47
target/linux/brcm47xx/patches-3.3/050-bcma-export-needed-gpio-functions.patch
View File

@@ -1,47 +0,0 @@
From f6e41db3ee7ead99e1398def222c14893fc265de Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Thu, 4 Aug 2011 21:09:48 +0200
Subject: [PATCH 26/26] bcma: export needed gpio functions
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
drivers/bcma/driver_chipcommon.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
--- a/drivers/bcma/driver_chipcommon.c
+++ b/drivers/bcma/driver_chipcommon.c
@@ -81,16 +81,19 @@ u32 bcma_chipco_gpio_in(struct bcma_drv_
{
return bcma_cc_read32(cc, BCMA_CC_GPIOIN) & mask;
}
+EXPORT_SYMBOL_GPL(bcma_chipco_gpio_in);
u32 bcma_chipco_gpio_out(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
return bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUT, mask, value);
}
+EXPORT_SYMBOL_GPL(bcma_chipco_gpio_out);
u32 bcma_chipco_gpio_outen(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
return bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUTEN, mask, value);
}
+EXPORT_SYMBOL_GPL(bcma_chipco_gpio_outen);
u32 bcma_chipco_gpio_control(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
@@ -102,11 +105,13 @@ u32 bcma_chipco_gpio_intmask(struct bcma
{
return bcma_cc_write32_masked(cc, BCMA_CC_GPIOIRQ, mask, value);
}
+EXPORT_SYMBOL_GPL(bcma_chipco_gpio_intmask);
u32 bcma_chipco_gpio_polarity(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
return bcma_cc_write32_masked(cc, BCMA_CC_GPIOPOL, mask, value);
}
+EXPORT_SYMBOL_GPL(bcma_chipco_gpio_polarity);
#ifdef CONFIG_BCMA_DRIVER_MIPS
void bcma_chipco_serial_init(struct bcma_drv_cc *cc)

12
target/linux/brcm47xx/patches-3.3/140-bcm47xx-add-gpio_set_debounce.patch
View File

@@ -1,12 +0,0 @@
--- a/arch/mips/include/asm/mach-bcm47xx/gpio.h
+++ b/arch/mips/include/asm/mach-bcm47xx/gpio.h
@@ -151,5 +151,9 @@ static inline int gpio_polarity(unsigned
return -EINVAL;
}
+static inline int gpio_set_debounce(unsigned gpio, unsigned debounce)
+{
+ return -ENOSYS;
+}
#endif /* __BCM47XX_GPIO_H */

51
target/linux/brcm47xx/patches-3.3/220-add_gpio_request_one.patch
View File

@@ -1,51 +0,0 @@
--- a/arch/mips/bcm47xx/gpio.c
+++ b/arch/mips/bcm47xx/gpio.c
@@ -7,6 +7,7 @@
*/
#include <linux/export.h>
+#include <linux/gpio.h>
#include <linux/ssb/ssb.h>
#include <linux/ssb/ssb_driver_chipcommon.h>
#include <linux/ssb/ssb_driver_extif.h>
@@ -100,3 +101,30 @@ int gpio_to_irq(unsigned gpio)
return -EINVAL;
}
EXPORT_SYMBOL_GPL(gpio_to_irq);
+
+/**
+ * gpio_request_one - request a single GPIO with initial configuration
+ * @gpio: the GPIO number
+ * @flags: GPIO configuration as specified by GPIOF_*
+ * @label: a literal description string of this GPIO
+ */
+int gpio_request_one(unsigned gpio, unsigned long flags, const char *label)
+{
+ int err;
+
+ err = gpio_request(gpio, label);
+ if (err)
+ return err;
+
+ if (flags & GPIOF_DIR_IN)
+ err = gpio_direction_input(gpio);
+ else
+ err = gpio_direction_output(gpio,
+ (flags & GPIOF_INIT_HIGH) ? 1 : 0);
+
+ if (err)
+ gpio_free(gpio);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(gpio_request_one);
--- a/arch/mips/include/asm/mach-bcm47xx/gpio.h
+++ b/arch/mips/include/asm/mach-bcm47xx/gpio.h
@@ -19,6 +19,7 @@
extern int gpio_request(unsigned gpio, const char *label);
extern void gpio_free(unsigned gpio);
extern int gpio_to_irq(unsigned gpio);
+extern int gpio_request_one(unsigned gpio, unsigned long flags, const char *label);
static inline int gpio_get_value(unsigned gpio)
{

40
target/linux/brcm47xx/patches-3.3/500-ssb-add-function-to-return-number-of-gpio-lines.patch Normal file
View File

@@ -0,0 +1,40 @@
--- a/drivers/ssb/embedded.c
+++ b/drivers/ssb/embedded.c
@@ -136,6 +136,18 @@ u32 ssb_gpio_polarity(struct ssb_bus *bu
}
EXPORT_SYMBOL(ssb_gpio_polarity);
+int ssb_gpio_count(struct ssb_bus *bus)
+{
+ if (ssb_chipco_available(&bus->chipco))
+ return SSB_GPIO_CHIPCO_LINES;
+ else if (ssb_extif_available(&bus->extif))
+ return SSB_GPIO_EXTIF_LINES;
+ else
+ SSB_WARN_ON(1);
+ return 0;
+}
+EXPORT_SYMBOL(ssb_gpio_count);
+
#ifdef CONFIG_SSB_DRIVER_GIGE
static int gige_pci_init_callback(struct ssb_bus *bus, unsigned long data)
{
--- a/include/linux/ssb/ssb_embedded.h
+++ b/include/linux/ssb/ssb_embedded.h
@@ -7,6 +7,9 @@
extern int ssb_watchdog_timer_set(struct ssb_bus *bus, u32 ticks);
+#define SSB_GPIO_EXTIF_LINES 5
+#define SSB_GPIO_CHIPCO_LINES 16
+
/* Generic GPIO API */
u32 ssb_gpio_in(struct ssb_bus *bus, u32 mask);
u32 ssb_gpio_out(struct ssb_bus *bus, u32 mask, u32 value);
@@ -14,5 +17,6 @@ u32 ssb_gpio_outen(struct ssb_bus *bus,
u32 ssb_gpio_control(struct ssb_bus *bus, u32 mask, u32 value);
u32 ssb_gpio_intmask(struct ssb_bus *bus, u32 mask, u32 value);
u32 ssb_gpio_polarity(struct ssb_bus *bus, u32 mask, u32 value);
+int ssb_gpio_count(struct ssb_bus *bus);
#endif /* LINUX_SSB_EMBEDDED_H_ */

170
target/linux/brcm47xx/patches-3.3/501-bcma-add-gpio-driver.patch Normal file
View File

@@ -0,0 +1,170 @@
--- a/drivers/bcma/Kconfig
+++ b/drivers/bcma/Kconfig
@@ -39,6 +39,11 @@ config BCMA_HOST_SOC
depends on BCMA_DRIVER_MIPS
select USB_HCD_BCMA if USB_EHCI_HCD || USB_OHCI_HCD
+config BCMA_DRIVER_GPIO
+ bool
+ depends on BCMA_DRIVER_MIPS
+ default y
+
config BCMA_SFLASH
bool
depends on BCMA_DRIVER_MIPS
--- a/drivers/bcma/Makefile
+++ b/drivers/bcma/Makefile
@@ -6,6 +6,7 @@ bcma-y += driver_pci.o
bcma-$(CONFIG_BCMA_DRIVER_PCI_HOSTMODE) += driver_pci_host.o
bcma-$(CONFIG_BCMA_DRIVER_MIPS) += driver_mips.o
bcma-$(CONFIG_BCMA_DRIVER_GMAC_CMN) += driver_gmac_cmn.o
+bcma-$(CONFIG_BCMA_DRIVER_GPIO) += driver_gpio.o
bcma-$(CONFIG_BCMA_HOST_PCI) += host_pci.o
bcma-$(CONFIG_BCMA_HOST_SOC) += host_soc.o
obj-$(CONFIG_BCMA) += bcma.o
--- /dev/null
+++ b/drivers/bcma/driver_gpio.c
@@ -0,0 +1,96 @@
+/*
+ * Broadcom specific AMBA
+ * GPIO driver for SoCs
+ *
+ * Copyright 2012, Hauke Mehrtens <hauke@hauke-m.de>
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include <linux/export.h>
+#include <linux/bcma/bcma.h>
+#include <linux/bcma/bcma_driver_gpio.h>
+
+u32 bcma_gpio_in(struct bcma_bus *bus, u32 mask)
+{
+ unsigned long flags;
+ u32 res = 0;
+
+ spin_lock_irqsave(&bus->gpio_lock, flags);
+ res = bcma_chipco_gpio_in(&bus->drv_cc, mask);
+ spin_unlock_irqrestore(&bus->gpio_lock, flags);
+
+ return res;
+}
+EXPORT_SYMBOL(bcma_gpio_in);
+
+u32 bcma_gpio_out(struct bcma_bus *bus, u32 mask, u32 value)
+{
+ unsigned long flags;
+ u32 res = 0;
+
+ spin_lock_irqsave(&bus->gpio_lock, flags);
+ res = bcma_chipco_gpio_out(&bus->drv_cc, mask, value);
+ spin_unlock_irqrestore(&bus->gpio_lock, flags);
+
+ return res;
+}
+EXPORT_SYMBOL(bcma_gpio_out);
+
+u32 bcma_gpio_outen(struct bcma_bus *bus, u32 mask, u32 value)
+{
+ unsigned long flags;
+ u32 res = 0;
+
+ spin_lock_irqsave(&bus->gpio_lock, flags);
+ res = bcma_chipco_gpio_outen(&bus->drv_cc, mask, value);
+ spin_unlock_irqrestore(&bus->gpio_lock, flags);
+
+ return res;
+}
+EXPORT_SYMBOL(bcma_gpio_outen);
+
+u32 bcma_gpio_control(struct bcma_bus *bus, u32 mask, u32 value)
+{
+ unsigned long flags;
+ u32 res = 0;
+
+ spin_lock_irqsave(&bus->gpio_lock, flags);
+ res = bcma_chipco_gpio_control(&bus->drv_cc, mask, value);
+ spin_unlock_irqrestore(&bus->gpio_lock, flags);
+
+ return res;
+}
+EXPORT_SYMBOL(bcma_gpio_control);
+
+u32 bcma_gpio_intmask(struct bcma_bus *bus, u32 mask, u32 value)
+{
+ unsigned long flags;
+ u32 res = 0;
+
+ spin_lock_irqsave(&bus->gpio_lock, flags);
+ res = bcma_chipco_gpio_intmask(&bus->drv_cc, mask, value);
+ spin_unlock_irqrestore(&bus->gpio_lock, flags);
+
+ return res;
+}
+EXPORT_SYMBOL(bcma_gpio_intmask);
+
+u32 bcma_gpio_polarity(struct bcma_bus *bus, u32 mask, u32 value)
+{
+ unsigned long flags;
+ u32 res = 0;
+
+ spin_lock_irqsave(&bus->gpio_lock, flags);
+ res = bcma_chipco_gpio_polarity(&bus->drv_cc, mask, value);
+ spin_unlock_irqrestore(&bus->gpio_lock, flags);
+
+ return res;
+}
+EXPORT_SYMBOL(bcma_gpio_polarity);
+
+int bcma_gpio_count(struct bcma_bus *bus)
+{
+ return BCMA_GPIO_CC_LINES;
+}
+EXPORT_SYMBOL(bcma_gpio_count);
--- a/drivers/bcma/scan.c
+++ b/drivers/bcma/scan.c
@@ -422,6 +422,10 @@ void bcma_init_bus(struct bcma_bus *bus)
if (bus->init_done)
return;
+#ifdef CONFIG_BCMA_DRIVER_GPIO
+ spin_lock_init(&bus->gpio_lock);
+#endif
+
INIT_LIST_HEAD(&bus->cores);
bus->nr_cores = 0;
--- a/include/linux/bcma/bcma.h
+++ b/include/linux/bcma/bcma.h
@@ -255,6 +255,11 @@ struct bcma_bus {
struct bcma_drv_mips drv_mips;
struct bcma_drv_gmac_cmn drv_gmac_cmn;
+#ifdef CONFIG_BCMA_DRIVER_GPIO
+ /* Lock for GPIO register access. */
+ spinlock_t gpio_lock;
+#endif /* CONFIG_BCMA_DRIVER_GPIO */
+
/* We decided to share SPROM struct with SSB as long as we do not need
* any hacks for BCMA. This simplifies drivers code. */
struct ssb_sprom sprom;
--- /dev/null
+++ b/include/linux/bcma/bcma_driver_gpio.h
@@ -0,0 +1,17 @@
+#ifndef LINUX_BCMA_DRIVER_GPIO_H_
+#define LINUX_BCMA_DRIVER_GPIO_H_
+
+#include <linux/types.h>
+#include <linux/bcma/bcma.h>
+
+#define BCMA_GPIO_CC_LINES 16
+
+u32 bcma_gpio_in(struct bcma_bus *bus, u32 mask);
+u32 bcma_gpio_out(struct bcma_bus *bus, u32 mask, u32 value);
+u32 bcma_gpio_outen(struct bcma_bus *bus, u32 mask, u32 value);
+u32 bcma_gpio_control(struct bcma_bus *bus, u32 mask, u32 value);
+u32 bcma_gpio_intmask(struct bcma_bus *bus, u32 mask, u32 value);
+u32 bcma_gpio_polarity(struct bcma_bus *bus, u32 mask, u32 value);
+int bcma_gpio_count(struct bcma_bus *bus);
+
+#endif /* LINUX_BCMA_DRIVER_GPIO_H_ */

490
target/linux/brcm47xx/patches-3.3/502-bcm47xx-rewrite-gpio-handling.patch Normal file
View File

@@ -0,0 +1,490 @@
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -92,6 +92,7 @@ config ATH79
config BCM47XX
bool "Broadcom BCM47XX based boards"
+ select ARCH_REQUIRE_GPIOLIB
select BOOT_RAW
select CEVT_R4K
select CSRC_R4K
@@ -100,7 +101,6 @@ config BCM47XX
select IRQ_CPU
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_LITTLE_ENDIAN
- select GENERIC_GPIO
select CFE
help
Support for BCM47XX based boards
--- a/arch/mips/bcm47xx/gpio.c
+++ b/arch/mips/bcm47xx/gpio.c
@@ -4,81 +4,198 @@
* for more details.
*
* Copyright (C) 2007 Aurelien Jarno <aurelien@aurel32.net>
+ * Copyright (C) 2012 Hauke Mehrtens <hauke@hauke-m.de>
+ *
+ * Parts of this file are based on Atheros AR71XX/AR724X/AR913X GPIO
*/
#include <linux/export.h>
+#include <linux/gpio.h>
#include <linux/ssb/ssb.h>
-#include <linux/ssb/ssb_driver_chipcommon.h>
-#include <linux/ssb/ssb_driver_extif.h>
-#include <asm/mach-bcm47xx/bcm47xx.h>
-#include <asm/mach-bcm47xx/gpio.h>
+#include <linux/ssb/ssb_embedded.h>
+#include <linux/bcma/bcma.h>
+#include <linux/bcma/bcma_driver_gpio.h>
+
+#include <bcm47xx.h>
-#if (BCM47XX_CHIPCO_GPIO_LINES > BCM47XX_EXTIF_GPIO_LINES)
-static DECLARE_BITMAP(gpio_in_use, BCM47XX_CHIPCO_GPIO_LINES);
-#else
-static DECLARE_BITMAP(gpio_in_use, BCM47XX_EXTIF_GPIO_LINES);
-#endif
-int gpio_request(unsigned gpio, const char *tag)
+static unsigned long bcm47xx_gpio_count;
+
+/* low level BCM47xx gpio api */
+u32 bcm47xx_gpio_in(u32 mask)
{
switch (bcm47xx_bus_type) {
#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
- if (ssb_chipco_available(&bcm47xx_bus.ssb.chipco) &&
- ((unsigned)gpio >= BCM47XX_CHIPCO_GPIO_LINES))
- return -EINVAL;
-
- if (ssb_extif_available(&bcm47xx_bus.ssb.extif) &&
- ((unsigned)gpio >= BCM47XX_EXTIF_GPIO_LINES))
- return -EINVAL;
+ return ssb_gpio_in(&bcm47xx_bus.ssb, mask);
+#endif
+#ifdef CONFIG_BCM47XX_BCMA
+ case BCM47XX_BUS_TYPE_BCMA:
+ return bcma_gpio_in(&bcm47xx_bus.bcma.bus, mask);
+#endif
+ }
+ return -EINVAL;
+}
+EXPORT_SYMBOL(bcm47xx_gpio_in);
- if (test_and_set_bit(gpio, gpio_in_use))
- return -EBUSY;
+u32 bcm47xx_gpio_out(u32 mask, u32 value)
+{
+ switch (bcm47xx_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
+ case BCM47XX_BUS_TYPE_SSB:
+ return ssb_gpio_out(&bcm47xx_bus.ssb, mask, value);
+#endif
+#ifdef CONFIG_BCM47XX_BCMA
+ case BCM47XX_BUS_TYPE_BCMA:
+ return bcma_gpio_out(&bcm47xx_bus.bcma.bus, mask, value);
+#endif
+ }
+ return -EINVAL;
+}
+EXPORT_SYMBOL(bcm47xx_gpio_out);
- return 0;
+u32 bcm47xx_gpio_outen(u32 mask, u32 value)
+{
+ switch (bcm47xx_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
+ case BCM47XX_BUS_TYPE_SSB:
+ return ssb_gpio_outen(&bcm47xx_bus.ssb, mask, value);
#endif
#ifdef CONFIG_BCM47XX_BCMA
case BCM47XX_BUS_TYPE_BCMA:
- if (gpio >= BCM47XX_CHIPCO_GPIO_LINES)
- return -EINVAL;
+ return bcma_gpio_outen(&bcm47xx_bus.bcma.bus, mask, value);
+#endif
+ }
+ return -EINVAL;
+}
+EXPORT_SYMBOL(bcm47xx_gpio_outen);
- if (test_and_set_bit(gpio, gpio_in_use))
- return -EBUSY;
+u32 bcm47xx_gpio_control(u32 mask, u32 value)
+{
+ switch (bcm47xx_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
+ case BCM47XX_BUS_TYPE_SSB:
+ return ssb_gpio_control(&bcm47xx_bus.ssb, mask, value);
+#endif
+#ifdef CONFIG_BCM47XX_BCMA
+ case BCM47XX_BUS_TYPE_BCMA:
+ return bcma_gpio_control(&bcm47xx_bus.bcma.bus, mask, value);
+#endif
+ }
+ return -EINVAL;
+}
+EXPORT_SYMBOL(bcm47xx_gpio_control);
- return 0;
+u32 bcm47xx_gpio_intmask(u32 mask, u32 value)
+{
+ switch (bcm47xx_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
+ case BCM47XX_BUS_TYPE_SSB:
+ return ssb_gpio_intmask(&bcm47xx_bus.ssb, mask, value);
+#endif
+#ifdef CONFIG_BCM47XX_BCMA
+ case BCM47XX_BUS_TYPE_BCMA:
+ return bcma_gpio_intmask(&bcm47xx_bus.bcma.bus, mask, value);
#endif
}
return -EINVAL;
}
-EXPORT_SYMBOL(gpio_request);
+EXPORT_SYMBOL(bcm47xx_gpio_intmask);
-void gpio_free(unsigned gpio)
+u32 bcm47xx_gpio_polarity(u32 mask, u32 value)
{
switch (bcm47xx_bus_type) {
#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
- if (ssb_chipco_available(&bcm47xx_bus.ssb.chipco) &&
- ((unsigned)gpio >= BCM47XX_CHIPCO_GPIO_LINES))
- return;
+ return ssb_gpio_polarity(&bcm47xx_bus.ssb, mask, value);
+#endif
+#ifdef CONFIG_BCM47XX_BCMA
+ case BCM47XX_BUS_TYPE_BCMA:
+ return bcma_gpio_polarity(&bcm47xx_bus.bcma.bus, mask, value);
+#endif
+ }
+ return -EINVAL;
+}
+EXPORT_SYMBOL(bcm47xx_gpio_polarity);
+
+
+
+static int bcm47xx_gpio_get_value(struct gpio_chip *chip, unsigned gpio)
+{
+ return bcm47xx_gpio_in(1 << gpio);
+}
+
+static void bcm47xx_gpio_set_value(struct gpio_chip *chip,
+ unsigned gpio, int value)
+{
+ bcm47xx_gpio_out(1 << gpio, value ? 1 << gpio : 0);
+}
+
+static int bcm47xx_gpio_direction_input(struct gpio_chip *chip,
+ unsigned gpio)
+{
+ bcm47xx_gpio_outen(1 << gpio, 0);
+ return 0;
+}
+
+static int bcm47xx_gpio_direction_output(struct gpio_chip *chip,
+ unsigned gpio, int value)
+{
+ /* first set the gpio out value */
+ bcm47xx_gpio_out(1 << gpio, value ? 1 << gpio : 0);
+ /* then set the gpio mode */
+ bcm47xx_gpio_outen(1 << gpio, 1 << gpio);
+ return 0;
+}
+
+static struct gpio_chip bcm47xx_gpio_chip = {
+ .label = "bcm47xx",
+ .get = bcm47xx_gpio_get_value,
+ .set = bcm47xx_gpio_set_value,
+ .direction_input = bcm47xx_gpio_direction_input,
+ .direction_output = bcm47xx_gpio_direction_output,
+ .base = 0,
+};
- if (ssb_extif_available(&bcm47xx_bus.ssb.extif) &&
- ((unsigned)gpio >= BCM47XX_EXTIF_GPIO_LINES))
- return;
+void __init bcm47xx_gpio_init(void)
+{
+ int err;
- clear_bit(gpio, gpio_in_use);
- return;
+ switch (bcm47xx_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
+ case BCM47XX_BUS_TYPE_SSB:
+ bcm47xx_gpio_count = ssb_gpio_count(&bcm47xx_bus.ssb);
#endif
#ifdef CONFIG_BCM47XX_BCMA
case BCM47XX_BUS_TYPE_BCMA:
- if (gpio >= BCM47XX_CHIPCO_GPIO_LINES)
- return;
-
- clear_bit(gpio, gpio_in_use);
- return;
+ bcm47xx_gpio_count = bcma_gpio_count(&bcm47xx_bus.bcma.bus);
#endif
}
+
+ bcm47xx_gpio_chip.ngpio = bcm47xx_gpio_count;
+
+ err = gpiochip_add(&bcm47xx_gpio_chip);
+ if (err)
+ panic("cannot add BCM47xx GPIO chip, error=%d", err);
}
-EXPORT_SYMBOL(gpio_free);
+
+int gpio_get_value(unsigned gpio)
+{
+ if (gpio < bcm47xx_gpio_count)
+ return bcm47xx_gpio_in(1 << gpio);
+
+ return __gpio_get_value(gpio);
+}
+EXPORT_SYMBOL(gpio_get_value);
+
+void gpio_set_value(unsigned gpio, int value)
+{
+ if (gpio < bcm47xx_gpio_count)
+ bcm47xx_gpio_out(1 << gpio, value ? 1 << gpio : 0);
+ else
+ __gpio_set_value(gpio, value);
+}
+EXPORT_SYMBOL(gpio_set_value);
int gpio_to_irq(unsigned gpio)
{
@@ -99,4 +216,11 @@ int gpio_to_irq(unsigned gpio)
}
return -EINVAL;
}
-EXPORT_SYMBOL_GPL(gpio_to_irq);
+EXPORT_SYMBOL(gpio_to_irq);
+
+int irq_to_gpio(unsigned irq)
+{
+ /* FIXME */
+ return -EINVAL;
+}
+EXPORT_SYMBOL(irq_to_gpio);
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -344,6 +344,8 @@ void __init plat_mem_setup(void)
_machine_restart = bcm47xx_machine_restart;
_machine_halt = bcm47xx_machine_halt;
pm_power_off = bcm47xx_machine_halt;
+
+ bcm47xx_gpio_init();
}
static int __init bcm47xx_register_bus_complete(void)
--- a/arch/mips/bcm47xx/wgt634u.c
+++ b/arch/mips/bcm47xx/wgt634u.c
@@ -133,6 +133,7 @@ static int __init wgt634u_init(void)
* been allocated ranges 00:09:5b:xx:xx:xx and 00:0f:b5:xx:xx:xx.
*/
u8 *et0mac;
+ int err;
if (bcm47xx_bus_type != BCM47XX_BUS_TYPE_SSB)
return -ENODEV;
@@ -146,6 +147,12 @@ static int __init wgt634u_init(void)
printk(KERN_INFO "WGT634U machine detected.\n");
+ err = gpio_request(WGT634U_GPIO_RESET, "reset-buton");
+ if (err) {
+ printk(KERN_INFO "Can not register gpio fir reset button\n");
+ return 0;
+ }
+
if (!request_irq(gpio_to_irq(WGT634U_GPIO_RESET),
gpio_interrupt, IRQF_SHARED,
"WGT634U GPIO", &bcm47xx_bus.ssb.chipco)) {
--- a/arch/mips/include/asm/mach-bcm47xx/bcm47xx.h
+++ b/arch/mips/include/asm/mach-bcm47xx/bcm47xx.h
@@ -56,4 +56,6 @@ void bcm47xx_fill_bcma_boardinfo(struct
const char *prefix);
#endif
+void bcm47xx_gpio_init(void);
+
#endif /* __ASM_BCM47XX_H */
--- a/arch/mips/include/asm/mach-bcm47xx/gpio.h
+++ b/arch/mips/include/asm/mach-bcm47xx/gpio.h
@@ -4,152 +4,39 @@
* for more details.
*
* Copyright (C) 2007 Aurelien Jarno <aurelien@aurel32.net>
+ * Copyright (C) 2012 Hauke Mehrtens <hauke@hauke-m.de>
*/
#ifndef __BCM47XX_GPIO_H
#define __BCM47XX_GPIO_H
-#include <linux/ssb/ssb_embedded.h>
-#include <linux/bcma/bcma.h>
-#include <asm/mach-bcm47xx/bcm47xx.h>
-
-#define BCM47XX_EXTIF_GPIO_LINES 5
-#define BCM47XX_CHIPCO_GPIO_LINES 16
-
-extern int gpio_request(unsigned gpio, const char *label);
-extern void gpio_free(unsigned gpio);
-extern int gpio_to_irq(unsigned gpio);
+#define ARCH_NR_GPIOS 64
+#include <asm-generic/gpio.h>
-static inline int gpio_get_value(unsigned gpio)
-{
- switch (bcm47xx_bus_type) {
-#ifdef CONFIG_BCM47XX_SSB
- case BCM47XX_BUS_TYPE_SSB:
- return ssb_gpio_in(&bcm47xx_bus.ssb, 1 << gpio);
-#endif
-#ifdef CONFIG_BCM47XX_BCMA
- case BCM47XX_BUS_TYPE_BCMA:
- return bcma_chipco_gpio_in(&bcm47xx_bus.bcma.bus.drv_cc,
- 1 << gpio);
-#endif
- }
- return -EINVAL;
-}
-
-#define gpio_get_value_cansleep gpio_get_value
-
-static inline void gpio_set_value(unsigned gpio, int value)
-{
- switch (bcm47xx_bus_type) {
-#ifdef CONFIG_BCM47XX_SSB
- case BCM47XX_BUS_TYPE_SSB:
- ssb_gpio_out(&bcm47xx_bus.ssb, 1 << gpio,
- value ? 1 << gpio : 0);
- return;
-#endif
-#ifdef CONFIG_BCM47XX_BCMA
- case BCM47XX_BUS_TYPE_BCMA:
- bcma_chipco_gpio_out(&bcm47xx_bus.bcma.bus.drv_cc, 1 << gpio,
- value ? 1 << gpio : 0);
- return;
-#endif
- }
-}
-
-#define gpio_set_value_cansleep gpio_set_value
-
-static inline int gpio_cansleep(unsigned gpio)
-{
- return 0;
-}
+/* low level BCM47xx gpio api */
+u32 bcm47xx_gpio_in(u32 mask);
+u32 bcm47xx_gpio_out(u32 mask, u32 value);
+u32 bcm47xx_gpio_outen(u32 mask, u32 value);
+u32 bcm47xx_gpio_control(u32 mask, u32 value);
+u32 bcm47xx_gpio_intmask(u32 mask, u32 value);
+u32 bcm47xx_gpio_polarity(u32 mask, u32 value);
-static inline int gpio_is_valid(unsigned gpio)
-{
- return gpio < (BCM47XX_EXTIF_GPIO_LINES + BCM47XX_CHIPCO_GPIO_LINES);
-}
+int gpio_to_irq(unsigned gpio);
+int irq_to_gpio(unsigned irq);
+int gpio_get_value(unsigned gpio);
+void gpio_set_value(unsigned gpio, int value);
-
-static inline int gpio_direction_input(unsigned gpio)
+static inline void gpio_intmask(unsigned gpio, int value)
{
- switch (bcm47xx_bus_type) {
-#ifdef CONFIG_BCM47XX_SSB
- case BCM47XX_BUS_TYPE_SSB:
- ssb_gpio_outen(&bcm47xx_bus.ssb, 1 << gpio, 0);
- return 0;
-#endif
-#ifdef CONFIG_BCM47XX_BCMA
- case BCM47XX_BUS_TYPE_BCMA:
- bcma_chipco_gpio_outen(&bcm47xx_bus.bcma.bus.drv_cc, 1 << gpio,
- 0);
- return 0;
-#endif
- }
- return -EINVAL;
+ bcm47xx_gpio_intmask(1 << gpio, value ? 1 << gpio : 0);
}
-static inline int gpio_direction_output(unsigned gpio, int value)
+static inline void gpio_polarity(unsigned gpio, int value)
{
- switch (bcm47xx_bus_type) {
-#ifdef CONFIG_BCM47XX_SSB
- case BCM47XX_BUS_TYPE_SSB:
- /* first set the gpio out value */
- ssb_gpio_out(&bcm47xx_bus.ssb, 1 << gpio,
- value ? 1 << gpio : 0);
- /* then set the gpio mode */
- ssb_gpio_outen(&bcm47xx_bus.ssb, 1 << gpio, 1 << gpio);
- return 0;
-#endif
-#ifdef CONFIG_BCM47XX_BCMA
- case BCM47XX_BUS_TYPE_BCMA:
- /* first set the gpio out value */
- bcma_chipco_gpio_out(&bcm47xx_bus.bcma.bus.drv_cc, 1 << gpio,
- value ? 1 << gpio : 0);
- /* then set the gpio mode */
- bcma_chipco_gpio_outen(&bcm47xx_bus.bcma.bus.drv_cc, 1 << gpio,
- 1 << gpio);
- return 0;
-#endif
- }
- return -EINVAL;
+ bcm47xx_gpio_polarity(1 << gpio, value ? 1 << gpio : 0);
}
-static inline int gpio_intmask(unsigned gpio, int value)
-{
- switch (bcm47xx_bus_type) {
-#ifdef CONFIG_BCM47XX_SSB
- case BCM47XX_BUS_TYPE_SSB:
- ssb_gpio_intmask(&bcm47xx_bus.ssb, 1 << gpio,
- value ? 1 << gpio : 0);
- return 0;
-#endif
-#ifdef CONFIG_BCM47XX_BCMA
- case BCM47XX_BUS_TYPE_BCMA:
- bcma_chipco_gpio_intmask(&bcm47xx_bus.bcma.bus.drv_cc,
- 1 << gpio, value ? 1 << gpio : 0);
- return 0;
-#endif
- }
- return -EINVAL;
-}
-
-static inline int gpio_polarity(unsigned gpio, int value)
-{
- switch (bcm47xx_bus_type) {
-#ifdef CONFIG_BCM47XX_SSB
- case BCM47XX_BUS_TYPE_SSB:
- ssb_gpio_polarity(&bcm47xx_bus.ssb, 1 << gpio,
- value ? 1 << gpio : 0);
- return 0;
-#endif
-#ifdef CONFIG_BCM47XX_BCMA
- case BCM47XX_BUS_TYPE_BCMA:
- bcma_chipco_gpio_polarity(&bcm47xx_bus.bcma.bus.drv_cc,
- 1 << gpio, value ? 1 << gpio : 0);
- return 0;
-#endif
- }
- return -EINVAL;
-}
+#define gpio_cansleep __gpio_cansleep
#endif /* __BCM47XX_GPIO_H */

9
target/linux/brcm47xx/patches-3.3/812-disable_wgt634u_crap.patch
View File

@@ -7,7 +7,7 @@
-obj-$(CONFIG_BCM47XX_SSB) += wgt634u.o
--- a/arch/mips/bcm47xx/wgt634u.c
+++ /dev/null
@@ -1,170 +0,0 @@
@@ -1,177 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
@@ -143,6 +143,7 @@
- * been allocated ranges 00:09:5b:xx:xx:xx and 00:0f:b5:xx:xx:xx.
- */
- u8 *et0mac;
- int err;
-
- if (bcm47xx_bus_type != BCM47XX_BUS_TYPE_SSB)
- return -ENODEV;
@@ -156,6 +157,12 @@
-
- printk(KERN_INFO "WGT634U machine detected.\n");
-
- err = gpio_request(WGT634U_GPIO_RESET, "reset-buton");
- if (err) {
- printk(KERN_INFO "Can not register gpio fir reset button\n");
- return 0;
- }
-
- if (!request_irq(gpio_to_irq(WGT634U_GPIO_RESET),
- gpio_interrupt, IRQF_SHARED,
- "WGT634U GPIO", &bcm47xx_bus.ssb.chipco)) {