path: root/target/linux/ixp4xx/patches-2.6.23/030-ixp4xx_fsg_board_support.patch

Index: linux-2.6.23.12-armeb/arch/arm/mach-ixp4xx/fsg-pci.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.23.12-armeb/arch/arm/mach-ixp4xx/fsg-pci.c	2008-01-09 12:49:07.000000000 +1030
@@ -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-2.6.23.12-armeb/arch/arm/mach-ixp4xx/fsg-setup.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.23.12-armeb/arch/arm/mach-ixp4xx/fsg-setup.c	2008-01-09 12:49:07.000000000 +1030
@@ -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-2.6.23.12-armeb/arch/arm/mach-ixp4xx/Kconfig
===================================================================
--- linux-2.6.23.12-armeb.orig/arch/arm/mach-ixp4xx/Kconfig	2008-01-09 12:49:04.000000000 +1030
+++ linux-2.6.23.12-armeb/arch/arm/mach-ixp4xx/Kconfig	2008-01-11 13:24:01.000000000 +1030
@@ -125,6 +125,15 @@
 	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-2.6.23.12-armeb/arch/arm/mach-ixp4xx/Makefile
===================================================================
--- linux-2.6.23.12-armeb.orig/arch/arm/mach-ixp4xx/Makefile	2008-01-09 12:49:04.000000000 +1030
+++ linux-2.6.23.12-armeb/arch/arm/mach-ixp4xx/Makefile	2008-01-09 12:49:07.000000000 +1030
@@ -15,6 +15,7 @@
 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
 
@@ -28,6 +29,7 @@
 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
 obj-$(CONFIG_IXP4XX_QMGR)	+= ixp4xx_qmgr.o
Index: linux-2.6.23.12-armeb/include/asm-arm/arch-ixp4xx/fsg.h
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.23.12-armeb/include/asm-arm/arch-ixp4xx/fsg.h	2008-01-11 13:29:42.000000000 +1030
@@ -0,0 +1,58 @@
+/*
+ * 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
+#define FSG_RB_GPIO		9
+#define FSG_UB_GPIO		10
+
+#define FSG_SB_IRQ		IRQ_IXP4XX_GPIO4
+#define FSG_RB_IRQ		IRQ_IXP4XX_GPIO9
+#define FSG_UB_IRQ		IRQ_IXP4XX_GPIO10
+
+#define FSG_SB_BM		(1L << FSG_SB_GPIO)
+#define FSG_RB_BM		(1L << FSG_RB_GPIO)
+#define FSG_UB_BM		(1L << FSG_UB_GPIO)
+
+/* 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-2.6.23.12-armeb/include/asm-arm/arch-ixp4xx/hardware.h
===================================================================
--- linux-2.6.23.12-armeb.orig/include/asm-arm/arch-ixp4xx/hardware.h	2008-01-09 12:49:04.000000000 +1030
+++ linux-2.6.23.12-armeb/include/asm-arm/arch-ixp4xx/hardware.h	2008-01-09 12:49:07.000000000 +1030
@@ -45,5 +45,6 @@
 #include "nslu2.h"
 #include "nas100d.h"
 #include "dsmg600.h"
+#include "fsg.h"
 
 #endif  /* _ASM_ARCH_HARDWARE_H */
Index: linux-2.6.23.12-armeb/include/asm-arm/arch-ixp4xx/irqs.h
===================================================================
--- linux-2.6.23.12-armeb.orig/include/asm-arm/arch-ixp4xx/irqs.h	2008-01-09 12:49:04.000000000 +1030
+++ linux-2.6.23.12-armeb/include/asm-arm/arch-ixp4xx/irqs.h	2008-01-11 13:30:09.000000000 +1030
@@ -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-2.6.23.12-armeb/arch/arm/mach-ixp4xx/fsg-power.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.23.12-armeb/arch/arm/mach-ixp4xx/fsg-power.c	2008-01-11 12:47:50.000000000 +1030
@@ -0,0 +1,88 @@
+/*
+ * 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/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(FSG_RB_IRQ, IRQT_LOW);
+	set_irq_type(FSG_SB_IRQ, IRQT_LOW);
+
+	if (request_irq(FSG_RB_IRQ, &fsg_reset_handler,
+		IRQF_DISABLED, "FSG reset button", NULL) < 0) {
+
+		printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
+			FSG_RB_IRQ);
+
+		return -EIO;
+	}
+
+	if (request_irq(FSG_SB_IRQ, &fsg_power_handler,
+		IRQF_DISABLED, "FSG power button", NULL) < 0) {
+
+		printk(KERN_DEBUG "Power Button IRQ %d not available\n",
+			FSG_SB_IRQ);
+
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static void __exit fsg_power_exit(void)
+{
+	if (!(machine_is_fsg()))
+		return;
+
+	free_irq(FSG_SB_IRQ, NULL);
+	free_irq(FSG_RB_IRQ, 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-2.6.23.12-armeb/drivers/leds/Kconfig
===================================================================
--- linux-2.6.23.12-armeb.orig/drivers/leds/Kconfig	2008-01-11 13:30:47.000000000 +1030
+++ linux-2.6.23.12-armeb/drivers/leds/Kconfig	2008-01-11 13:34:34.000000000 +1030
@@ -48,6 +48,12 @@
 	  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-2.6.23.12-armeb/drivers/leds/Makefile
===================================================================
--- linux-2.6.23.12-armeb.orig/drivers/leds/Makefile	2008-01-11 13:30:50.000000000 +1030
+++ linux-2.6.23.12-armeb/drivers/leds/Makefile	2008-01-11 13:34:34.000000000 +1030
@@ -9,6 +9,7 @@
 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-2.6.23.12-armeb/drivers/leds/leds-fsg.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.23.12-armeb/drivers/leds/leds-fsg.c	2008-01-11 13:34:34.000000000 +1030
@@ -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");