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openwrt-xburst/target/linux/ixp4xx/patches-2.6.23/030-ixp4xx_fsg_board_support.patch
juhosg 0fc3447849 [ixp4xx] refresh kernel patches 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11204 3c298f89-4303-0410-b956-a3cf2f4a3e73
2008-05-19 10:58:03 +00:00

794 lines
21 KiB
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Index: linux-2.6.23.17/arch/arm/mach-ixp4xx/fsg-pci.c
===================================================================
--- /dev/null
+++ linux-2.6.23.17/arch/arm/mach-ixp4xx/fsg-pci.c
@@ -0,0 +1,71 @@
+/*
+ * arch/arch/mach-ixp4xx/fsg-pci.c
+ *
+ * FSG board-level PCI initialization
+ *
+ * Author: Rod Whitby <rod@whitby.id.au>
+ * Maintainer: http://www.nslu2-linux.org/
+ *
+ * based on ixdp425-pci.c:
+ * Copyright (C) 2002 Intel Corporation.
+ * Copyright (C) 2003-2004 MontaVista Software, Inc.
+ *
+ * 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/pci.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+
+#include <asm/mach/pci.h>
+#include <asm/mach-types.h>
+
+void __init fsg_pci_preinit(void)
+{
+ set_irq_type(IRQ_FSG_PCI_INTA, IRQT_LOW);
+ set_irq_type(IRQ_FSG_PCI_INTB, IRQT_LOW);
+ set_irq_type(IRQ_FSG_PCI_INTC, IRQT_LOW);
+
+ ixp4xx_pci_preinit();
+}
+
+static int __init fsg_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+ static int pci_irq_table[FSG_PCI_IRQ_LINES] = {
+ IRQ_FSG_PCI_INTC,
+ IRQ_FSG_PCI_INTB,
+ IRQ_FSG_PCI_INTA,
+ };
+
+ int irq = -1;
+ slot = slot - 11;
+
+ if (slot >= 1 && slot <= FSG_PCI_MAX_DEV &&
+ pin >= 1 && pin <= FSG_PCI_IRQ_LINES) {
+ irq = pci_irq_table[(slot - 1)];
+ }
+ printk("%s: Mapped slot %d pin %d to IRQ %d\n", __FUNCTION__,slot, pin, irq);
+
+ return irq;
+}
+
+struct hw_pci fsg_pci __initdata = {
+ .nr_controllers = 1,
+ .preinit = fsg_pci_preinit,
+ .swizzle = pci_std_swizzle,
+ .setup = ixp4xx_setup,
+ .scan = ixp4xx_scan_bus,
+ .map_irq = fsg_map_irq,
+};
+
+int __init fsg_pci_init(void)
+{
+ if (machine_is_fsg())
+ pci_common_init(&fsg_pci);
+ return 0;
+}
+
+subsys_initcall(fsg_pci_init);
Index: linux-2.6.23.17/arch/arm/mach-ixp4xx/fsg-setup.c
===================================================================
--- /dev/null
+++ linux-2.6.23.17/arch/arm/mach-ixp4xx/fsg-setup.c
@@ -0,0 +1,220 @@
+/*
+ * arch/arm/mach-ixp4xx/fsg-setup.c
+ *
+ * FSG board-setup
+ *
+ * based ixdp425-setup.c:
+ * Copyright (C) 2003-2004 MontaVista Software, Inc.
+ *
+ * Author: Rod Whitby <rod@whitby.id.au>
+ * Maintainers: http://www.nslu2-linux.org/
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+#include <linux/leds.h>
+#include <linux/reboot.h>
+#include <linux/i2c-gpio.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/flash.h>
+#include <asm/io.h>
+
+static struct flash_platform_data fsg_flash_data = {
+ .map_name = "cfi_probe",
+ .width = 2,
+};
+
+static struct resource fsg_flash_resource = {
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device fsg_flash = {
+ .name = "IXP4XX-Flash",
+ .id = 0,
+ .dev.platform_data = &fsg_flash_data,
+ .num_resources = 1,
+ .resource = &fsg_flash_resource,
+};
+
+static struct i2c_gpio_platform_data fsg_i2c_gpio_data = {
+ .sda_pin = FSG_SDA_PIN,
+ .scl_pin = FSG_SCL_PIN,
+};
+
+static struct platform_device fsg_i2c_gpio = {
+ .name = "i2c-gpio",
+ .id = 0,
+ .dev = {
+ .platform_data = &fsg_i2c_gpio_data,
+ },
+};
+
+static struct resource fsg_uart_resources[] = {
+ {
+ .start = IXP4XX_UART1_BASE_PHYS,
+ .end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IXP4XX_UART2_BASE_PHYS,
+ .end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
+ .flags = IORESOURCE_MEM,
+ }
+};
+
+static struct plat_serial8250_port fsg_uart_data[] = {
+ {
+ .mapbase = IXP4XX_UART1_BASE_PHYS,
+ .membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
+ .irq = IRQ_IXP4XX_UART1,
+ .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+ .iotype = UPIO_MEM,
+ .regshift = 2,
+ .uartclk = IXP4XX_UART_XTAL,
+ },
+ {
+ .mapbase = IXP4XX_UART2_BASE_PHYS,
+ .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
+ .irq = IRQ_IXP4XX_UART2,
+ .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+ .iotype = UPIO_MEM,
+ .regshift = 2,
+ .uartclk = IXP4XX_UART_XTAL,
+ },
+ { }
+};
+
+static struct platform_device fsg_uart = {
+ .name = "serial8250",
+ .id = PLAT8250_DEV_PLATFORM,
+ .dev.platform_data = fsg_uart_data,
+ .num_resources = ARRAY_SIZE(fsg_uart_resources),
+ .resource = fsg_uart_resources,
+};
+
+static struct platform_device fsg_leds = {
+ .name = "fsg-led",
+ .id = -1,
+};
+
+/* Built-in 10/100 Ethernet MAC interfaces */
+static struct eth_plat_info fsg_plat_eth[] = {
+ {
+ .phy = 5,
+ .rxq = 3,
+ .txreadyq = 20,
+ }, {
+ .phy = 4,
+ .rxq = 4,
+ .txreadyq = 21,
+ }
+};
+
+static struct platform_device fsg_eth[] = {
+ {
+ .name = "ixp4xx_eth",
+ .id = IXP4XX_ETH_NPEB,
+ .dev.platform_data = fsg_plat_eth,
+ }, {
+ .name = "ixp4xx_eth",
+ .id = IXP4XX_ETH_NPEC,
+ .dev.platform_data = fsg_plat_eth + 1,
+ }
+};
+
+static struct platform_device *fsg_devices[] __initdata = {
+ &fsg_i2c_gpio,
+ &fsg_flash,
+ &fsg_leds,
+ &fsg_eth[0],
+ &fsg_eth[1],
+};
+
+static void fsg_power_off(void)
+{
+ printk("Restarting system.\n");
+ machine_restart(NULL);
+}
+
+static void __init fsg_init(void)
+{
+ uint8_t __iomem *f;
+ int i;
+
+ ixp4xx_sys_init();
+
+ pm_power_off = fsg_power_off;
+
+ fsg_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
+ fsg_flash_resource.end =
+ IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
+
+ *IXP4XX_EXP_CS0 |= IXP4XX_FLASH_WRITABLE;
+ *IXP4XX_EXP_CS1 = *IXP4XX_EXP_CS0;
+
+ /* Configure CS2 for operation, 8bit and writable */
+ *IXP4XX_EXP_CS2 = 0xbfff0002;
+
+ /* This is only useful on a modified machine, but it is valuable
+ * to have it first in order to see debug messages, and so that
+ * it does *not* get removed if platform_add_devices fails!
+ */
+ (void)platform_device_register(&fsg_uart);
+
+ platform_add_devices(fsg_devices, ARRAY_SIZE(fsg_devices));
+
+
+ /*
+ * Map in a portion of the flash and read the MAC addresses.
+ * Since it is stored in BE in the flash itself, we need to
+ * byteswap it if we're in LE mode.
+ */
+ if ((f = ioremap(IXP4XX_EXP_BUS_BASE(0), 0x400000))) {
+#ifdef __ARMEB__
+ for (i = 0; i < 6; i++) {
+ fsg_plat_eth[0].hwaddr[i] = readb(f + 0x3C0422 + i);
+ fsg_plat_eth[1].hwaddr[i] = readb(f + 0x3C043B + i);
+ }
+#else
+ fsg_plat_eth[0].hwaddr[0] = readb(f + 0x3C0422 + 3);
+ fsg_plat_eth[0].hwaddr[1] = readb(f + 0x3C0422 + 2);
+ fsg_plat_eth[0].hwaddr[2] = readb(f + 0x3C0422 + 1);
+ fsg_plat_eth[0].hwaddr[3] = readb(f + 0x3C0422 + 0);
+ fsg_plat_eth[0].hwaddr[4] = readb(f + 0x3C0422 + 7);
+ fsg_plat_eth[0].hwaddr[5] = readb(f + 0x3C0422 + 6);
+
+ fsg_plat_eth[1].hwaddr[0] = readb(f + 0x3C0422 + 3);
+ fsg_plat_eth[1].hwaddr[1] = readb(f + 0x3C0422 + 2);
+ fsg_plat_eth[1].hwaddr[2] = readb(f + 0x3C0422 + 1);
+ fsg_plat_eth[1].hwaddr[3] = readb(f + 0x3C0422 + 0);
+ fsg_plat_eth[1].hwaddr[4] = readb(f + 0x3C0422 + 7);
+ fsg_plat_eth[1].hwaddr[5] = readb(f + 0x3C0422 + 6);
+#endif
+ iounmap(f);
+ }
+ printk(KERN_INFO "FSG: Using MAC address %.2x:%.2x:%.2x:%.2x:%.2x:%.2x for port 0\n",
+ fsg_plat_eth[0].hwaddr[0], fsg_plat_eth[0].hwaddr[1],
+ fsg_plat_eth[0].hwaddr[2], fsg_plat_eth[0].hwaddr[3],
+ fsg_plat_eth[0].hwaddr[4], fsg_plat_eth[0].hwaddr[5]);
+ printk(KERN_INFO "FSG: Using MAC address %.2x:%.2x:%.2x:%.2x:%.2x:%.2x for port 1\n",
+ fsg_plat_eth[1].hwaddr[0], fsg_plat_eth[1].hwaddr[1],
+ fsg_plat_eth[1].hwaddr[2], fsg_plat_eth[1].hwaddr[3],
+ fsg_plat_eth[1].hwaddr[4], fsg_plat_eth[1].hwaddr[5]);
+
+}
+
+MACHINE_START(FSG, "Freecom FSG-3")
+ /* Maintainer: www.nslu2-linux.org */
+ .phys_io = IXP4XX_PERIPHERAL_BASE_PHYS,
+ .io_pg_offst = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xfffc,
+ .map_io = ixp4xx_map_io,
+ .init_irq = ixp4xx_init_irq,
+ .timer = &ixp4xx_timer,
+ .boot_params = 0x0100,
+ .init_machine = fsg_init,
+MACHINE_END
+
Index: linux-2.6.23.17/arch/arm/mach-ixp4xx/Kconfig
===================================================================
--- linux-2.6.23.17.orig/arch/arm/mach-ixp4xx/Kconfig
+++ linux-2.6.23.17/arch/arm/mach-ixp4xx/Kconfig
@@ -125,6 +125,15 @@ config ARCH_IXDP4XX
depends on ARCH_IXDP425 || MACH_IXDP465 || MACH_KIXRP435
default y
+config MACH_FSG
+ bool
+ prompt "Freecom FSG-3"
+ select PCI
+ help
+ Say 'Y' here if you want your kernel to support Freecom's
+ FSG-3 device. For more information on this platform,
+ see http://www.nslu2-linux.org/wiki/FSG3/HomePage
+
#
# Certain registers and IRQs are only enabled if supporting IXP465 CPUs
#
Index: linux-2.6.23.17/arch/arm/mach-ixp4xx/Makefile
===================================================================
--- linux-2.6.23.17.orig/arch/arm/mach-ixp4xx/Makefile
+++ linux-2.6.23.17/arch/arm/mach-ixp4xx/Makefile
@@ -15,6 +15,7 @@ obj-pci-$(CONFIG_MACH_NAS100D) += nas10
obj-pci-$(CONFIG_MACH_DSMG600) += dsmg600-pci.o
obj-pci-$(CONFIG_MACH_GATEWAY7001) += gateway7001-pci.o
obj-pci-$(CONFIG_MACH_WG302V2) += wg302v2-pci.o
+obj-pci-$(CONFIG_MACH_FSG) += fsg-pci.o
obj-y += common.o
@@ -28,5 +29,6 @@ obj-$(CONFIG_MACH_NAS100D) += nas100d-se
obj-$(CONFIG_MACH_DSMG600) += dsmg600-setup.o dsmg600-power.o
obj-$(CONFIG_MACH_GATEWAY7001) += gateway7001-setup.o
obj-$(CONFIG_MACH_WG302V2) += wg302v2-setup.o
+obj-$(CONFIG_MACH_FSG) += fsg-setup.o fsg-power.o
obj-$(CONFIG_PCI) += $(obj-pci-$(CONFIG_PCI)) common-pci.o
Index: linux-2.6.23.17/include/asm-arm/arch-ixp4xx/fsg.h
===================================================================
--- /dev/null
+++ linux-2.6.23.17/include/asm-arm/arch-ixp4xx/fsg.h
@@ -0,0 +1,50 @@
+/*
+ * include/asm-arm/arch-ixp4xx/fsg.h
+ *
+ * Freecom FSG-3 platform specific definitions
+ *
+ * Author: Rod Whitby <rod@whitby.id.au>
+ * Author: Tomasz Chmielewski <mangoo@wpkg.org>
+ * Maintainers: http://www.nslu2-linux.org
+ *
+ * Based on coyote.h by
+ * Copyright 2004 (c) MontaVista, Software, Inc.
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef __ASM_ARCH_HARDWARE_H__
+#error "Do not include this directly, instead #include <asm/hardware.h>"
+#endif
+
+#define FSG_SDA_PIN 12
+#define FSG_SCL_PIN 13
+
+/*
+ * FSG PCI IRQs
+ */
+#define FSG_PCI_MAX_DEV 3
+#define FSG_PCI_IRQ_LINES 3
+
+
+/* PCI controller GPIO to IRQ pin mappings */
+#define FSG_PCI_INTA_PIN 6
+#define FSG_PCI_INTB_PIN 7
+#define FSG_PCI_INTC_PIN 5
+
+/* Buttons */
+
+#define FSG_SB_GPIO 4 /* sync button */
+#define FSG_RB_GPIO 9 /* reset button */
+#define FSG_UB_GPIO 10 /* usb button */
+
+/* LEDs */
+
+#define FSG_LED_WLAN_BIT 0
+#define FSG_LED_WAN_BIT 1
+#define FSG_LED_SATA_BIT 2
+#define FSG_LED_USB_BIT 4
+#define FSG_LED_RING_BIT 5
+#define FSG_LED_SYNC_BIT 7
Index: linux-2.6.23.17/include/asm-arm/arch-ixp4xx/hardware.h
===================================================================
--- linux-2.6.23.17.orig/include/asm-arm/arch-ixp4xx/hardware.h
+++ linux-2.6.23.17/include/asm-arm/arch-ixp4xx/hardware.h
@@ -45,5 +45,6 @@
#include "nslu2.h"
#include "nas100d.h"
#include "dsmg600.h"
+#include "fsg.h"
#endif /* _ASM_ARCH_HARDWARE_H */
Index: linux-2.6.23.17/include/asm-arm/arch-ixp4xx/irqs.h
===================================================================
--- linux-2.6.23.17.orig/include/asm-arm/arch-ixp4xx/irqs.h
+++ linux-2.6.23.17/include/asm-arm/arch-ixp4xx/irqs.h
@@ -128,4 +128,11 @@
#define IRQ_DSMG600_PCI_INTE IRQ_IXP4XX_GPIO7
#define IRQ_DSMG600_PCI_INTF IRQ_IXP4XX_GPIO6
+/*
+ * Freecom FSG-3 Board IRQs
+ */
+#define IRQ_FSG_PCI_INTA IRQ_IXP4XX_GPIO6
+#define IRQ_FSG_PCI_INTB IRQ_IXP4XX_GPIO7
+#define IRQ_FSG_PCI_INTC IRQ_IXP4XX_GPIO5
+
#endif
Index: linux-2.6.23.17/arch/arm/mach-ixp4xx/fsg-power.c
===================================================================
--- /dev/null
+++ linux-2.6.23.17/arch/arm/mach-ixp4xx/fsg-power.c
@@ -0,0 +1,89 @@
+/*
+ * arch/arm/mach-ixp4xx/fsg-power.c
+ *
+ * FSG Power/Reset driver
+ *
+ * Copyright (C) 2008 Rod Whitby <rod@whitby.id.au>
+ *
+ * based on nslu2-power.c
+ * Copyright (C) 2005 Tower Technologies
+ *
+ * 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/module.h>
+#include <linux/reboot.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/jiffies.h>
+#include <linux/timer.h>
+
+#include <asm/gpio.h>
+#include <asm/mach-types.h>
+
+static irqreturn_t fsg_power_handler(int irq, void *dev_id)
+{
+ /* Signal init to do the ctrlaltdel action, this will bypass init if
+ * it hasn't started and do a kernel_restart.
+ */
+ ctrl_alt_del();
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t fsg_reset_handler(int irq, void *dev_id)
+{
+ /* This is the paper-clip reset, it shuts the machine down directly.
+ */
+ machine_power_off();
+
+ return IRQ_HANDLED;
+}
+
+static int __init fsg_power_init(void)
+{
+ if (!(machine_is_fsg()))
+ return 0;
+
+ set_irq_type(gpio_to_irq(FSG_RB_GPIO), IRQT_LOW);
+ set_irq_type(gpio_to_irq(FSG_SB_GPIO), IRQT_LOW);
+
+ if (request_irq(gpio_to_irq(FSG_RB_GPIO), &fsg_reset_handler,
+ IRQF_DISABLED, "FSG reset button", NULL) < 0) {
+
+ printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
+ gpio_to_irq(FSG_RB_GPIO));
+
+ return -EIO;
+ }
+
+ if (request_irq(gpio_to_irq(FSG_SB_GPIO), &fsg_power_handler,
+ IRQF_DISABLED, "FSG power button", NULL) < 0) {
+
+ printk(KERN_DEBUG "Power Button IRQ %d not available\n",
+ gpio_to_irq(FSG_SB_GPIO));
+
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static void __exit fsg_power_exit(void)
+{
+ if (!(machine_is_fsg()))
+ return;
+
+ free_irq(gpio_to_irq(FSG_SB_GPIO), NULL);
+ free_irq(gpio_to_irq(FSG_RB_GPIO), NULL);
+}
+
+module_init(fsg_power_init);
+module_exit(fsg_power_exit);
+
+MODULE_AUTHOR("Rod Whitby <rod@whitby.id.au>");
+MODULE_DESCRIPTION("FSG Power/Reset driver");
+MODULE_LICENSE("GPL");
Index: linux-2.6.23.17/drivers/leds/Kconfig
===================================================================
--- linux-2.6.23.17.orig/drivers/leds/Kconfig
+++ linux-2.6.23.17/drivers/leds/Kconfig
@@ -48,6 +48,12 @@ config LEDS_IXP4XX
particular board must have LEDs and they must be connected
to the GPIO lines. If unsure, say Y.
+config LEDS_FSG
+ tristate "LED Support for the Freecom FSG-3"
+ depends on LEDS_CLASS && MACH_FSG
+ help
+ This option enables support for the LEDs on the Freecom FSG-3.
+
config LEDS_TOSA
tristate "LED Support for the Sharp SL-6000 series"
depends on LEDS_CLASS && PXA_SHARPSL
Index: linux-2.6.23.17/drivers/leds/Makefile
===================================================================
--- linux-2.6.23.17.orig/drivers/leds/Makefile
+++ linux-2.6.23.17/drivers/leds/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_LEDS_CORGI) += leds-corgi.
obj-$(CONFIG_LEDS_LOCOMO) += leds-locomo.o
obj-$(CONFIG_LEDS_SPITZ) += leds-spitz.o
obj-$(CONFIG_LEDS_IXP4XX) += leds-ixp4xx-gpio.o
+obj-$(CONFIG_LEDS_FSG) += leds-fsg.o
obj-$(CONFIG_LEDS_TOSA) += leds-tosa.o
obj-$(CONFIG_LEDS_S3C24XX) += leds-s3c24xx.o
obj-$(CONFIG_LEDS_AMS_DELTA) += leds-ams-delta.o
Index: linux-2.6.23.17/drivers/leds/leds-fsg.c
===================================================================
--- /dev/null
+++ linux-2.6.23.17/drivers/leds/leds-fsg.c
@@ -0,0 +1,243 @@
+/*
+ * LED Driver for the Freecom FSG-3
+ *
+ * Copyright (c) 2008 Rod Whitby <rod@whitby.id.au>
+ *
+ * Author: Rod Whitby <rod@whitby.id.au>
+ *
+ * Based on leds-spitz.c
+ * Copyright 2005-2006 Openedhand Ltd.
+ * Author: Richard Purdie <rpurdie@openedhand.com>
+ *
+ * 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/init.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+#include <asm/arch/hardware.h>
+#include <asm/io.h>
+
+static short __iomem *latch_address;
+static unsigned short latch_value;
+
+
+static void fsg_led_wlan_set(struct led_classdev *led_cdev, enum led_brightness value)
+{
+ if (value) {
+ latch_value &= ~(1 << FSG_LED_WLAN_BIT);
+ *latch_address = latch_value;
+ }
+ else {
+ latch_value |= (1 << FSG_LED_WLAN_BIT);
+ *latch_address = latch_value;
+ }
+}
+
+static void fsg_led_wan_set(struct led_classdev *led_cdev, enum led_brightness value)
+{
+ if (value) {
+ latch_value &= ~(1 << FSG_LED_WAN_BIT);
+ *latch_address = latch_value;
+ }
+ else {
+ latch_value |= (1 << FSG_LED_WAN_BIT);
+ *latch_address = latch_value;
+ }
+}
+
+static void fsg_led_sata_set(struct led_classdev *led_cdev, enum led_brightness value)
+{
+ if (value) {
+ latch_value &= ~(1 << FSG_LED_SATA_BIT);
+ *latch_address = latch_value;
+ }
+ else {
+ latch_value |= (1 << FSG_LED_SATA_BIT);
+ *latch_address = latch_value;
+ }
+}
+
+static void fsg_led_usb_set(struct led_classdev *led_cdev, enum led_brightness value)
+{
+ if (value) {
+ latch_value &= ~(1 << FSG_LED_USB_BIT);
+ *latch_address = latch_value;
+ }
+ else {
+ latch_value |= (1 << FSG_LED_USB_BIT);
+ *latch_address = latch_value;
+ }
+}
+
+static void fsg_led_sync_set(struct led_classdev *led_cdev, enum led_brightness value)
+{
+ if (value) {
+ latch_value &= ~(1 << FSG_LED_SYNC_BIT);
+ *latch_address = latch_value;
+ }
+ else {
+ latch_value |= (1 << FSG_LED_SYNC_BIT);
+ *latch_address = latch_value;
+ }
+}
+
+static void fsg_led_ring_set(struct led_classdev *led_cdev, enum led_brightness value)
+{
+ if (value) {
+ latch_value &= ~(1 << FSG_LED_RING_BIT);
+ *latch_address = latch_value;
+ }
+ else {
+ latch_value |= (1 << FSG_LED_RING_BIT);
+ *latch_address = latch_value;
+ }
+}
+
+
+
+static struct led_classdev fsg_wlan_led = {
+ .name = "fsg:wlan",
+ .brightness_set = fsg_led_wlan_set,
+};
+
+static struct led_classdev fsg_wan_led = {
+ .name = "fsg:wan",
+ .brightness_set = fsg_led_wan_set,
+};
+
+static struct led_classdev fsg_sata_led = {
+ .name = "fsg:sata",
+ .brightness_set = fsg_led_sata_set,
+};
+
+static struct led_classdev fsg_usb_led = {
+ .name = "fsg:usb",
+ .brightness_set = fsg_led_usb_set,
+};
+
+static struct led_classdev fsg_sync_led = {
+ .name = "fsg:sync",
+ .brightness_set = fsg_led_sync_set,
+};
+
+static struct led_classdev fsg_ring_led = {
+ .name = "fsg:ring",
+ .brightness_set = fsg_led_ring_set,
+};
+
+
+
+#ifdef CONFIG_PM
+static int fsg_led_suspend(struct platform_device *dev, pm_message_t state)
+{
+ led_classdev_suspend(&fsg_wlan_led);
+ led_classdev_suspend(&fsg_wan_led);
+ led_classdev_suspend(&fsg_sata_led);
+ led_classdev_suspend(&fsg_usb_led);
+ led_classdev_suspend(&fsg_sync_led);
+ led_classdev_suspend(&fsg_ring_led);
+ return 0;
+}
+
+static int fsg_led_resume(struct platform_device *dev)
+{
+ led_classdev_resume(&fsg_wlan_led);
+ led_classdev_resume(&fsg_wan_led);
+ led_classdev_resume(&fsg_sata_led);
+ led_classdev_resume(&fsg_usb_led);
+ led_classdev_resume(&fsg_sync_led);
+ led_classdev_resume(&fsg_ring_led);
+ return 0;
+}
+#endif
+
+
+static int fsg_led_probe(struct platform_device *pdev)
+{
+ int ret;
+
+ /* FIXME: Need to work out how to handle failure below */
+
+ ret = led_classdev_register(&pdev->dev, &fsg_wlan_led);
+ if (ret < 0)
+ return ret;
+
+ ret = led_classdev_register(&pdev->dev, &fsg_wan_led);
+ if (ret < 0)
+ return ret;
+
+ ret = led_classdev_register(&pdev->dev, &fsg_sata_led);
+ if (ret < 0)
+ return ret;
+
+ ret = led_classdev_register(&pdev->dev, &fsg_usb_led);
+ if (ret < 0)
+ return ret;
+
+ ret = led_classdev_register(&pdev->dev, &fsg_sync_led);
+ if (ret < 0)
+ return ret;
+
+ ret = led_classdev_register(&pdev->dev, &fsg_ring_led);
+ if (ret < 0)
+ return ret;
+
+ return ret;
+}
+
+static int fsg_led_remove(struct platform_device *pdev)
+{
+ led_classdev_unregister(&fsg_wlan_led);
+ led_classdev_unregister(&fsg_wan_led);
+ led_classdev_unregister(&fsg_sata_led);
+ led_classdev_unregister(&fsg_usb_led);
+ led_classdev_unregister(&fsg_sync_led);
+ led_classdev_unregister(&fsg_ring_led);
+
+ return 0;
+}
+
+
+static struct platform_driver fsg_led_driver = {
+ .probe = fsg_led_probe,
+ .remove = fsg_led_remove,
+#ifdef CONFIG_PM
+ .suspend = fsg_led_suspend,
+ .resume = fsg_led_resume,
+#endif
+ .driver = {
+ .name = "fsg-led",
+ },
+};
+
+
+static int __init fsg_led_init(void)
+{
+ /* Map the LED chip select address space */
+ latch_address = (unsigned short *) ioremap(IXP4XX_EXP_BUS_BASE(2), 512);
+ if (!latch_address)
+ return -ENOMEM;
+ latch_value = 0xffff;
+ *latch_address = latch_value;
+ /* FIXME: We leak memory if the next line fails */
+ return platform_driver_register(&fsg_led_driver);
+}
+
+static void __exit fsg_led_exit(void)
+{
+ platform_driver_unregister(&fsg_led_driver);
+ iounmap(latch_address);
+}
+
+
+module_init(fsg_led_init);
+module_exit(fsg_led_exit);
+
+MODULE_AUTHOR("Rod Whitby <rod@whitby.id.au>");
+MODULE_DESCRIPTION("Freecom FSG-3 LED driver");
+MODULE_LICENSE("GPL");
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