Added gpio and led drivers for 2.6.25.10 kernel

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11745 3c298f89-4303-0410-b956-a3cf2f4a3e73

2 files changed, 723 insertions, 0 deletions

diff --git a/target/linux/at91/patches-2.6.25/002-led-driver.patch b/target/linux/at91/patches-2.6.25/002-led-driver.patch
new file mode 100644
index 0000000000..8c08c89d00
--- /dev/null
+++ b/target/linux/at91/patches-2.6.25/002-led-driver.patch
@@ -0,0 +1,171 @@
+diff -urN linux-2.6.25.10.old/arch/arm/mach-at91/at91rm9200_devices.c linux-2.6.25.10/arch/arm/mach-at91/at91rm9200_devices.c
+--- linux-2.6.25.10.old/arch/arm/mach-at91/at91rm9200_devices.c	2008-07-06 09:01:53.000000000 +0200
++++ linux-2.6.25.10/arch/arm/mach-at91/at91rm9200_devices.c	2008-07-06 09:47:54.000000000 +0200
+@@ -717,6 +717,26 @@
+ static void __init at91_add_device_watchdog(void) {}
+ #endif
+ 
++/* --------------------------------------------------------------------
++ *  LEDs
++ * -------------------------------------------------------------------- */
++
++#if defined(CONFIG_LEDS)
++u8 at91_leds_cpu;
++u8 at91_leds_timer;
++
++void __init at91_init_leds(u8 cpu_led, u8 timer_led)
++{
++	/* Enable GPIO to access the LEDs */
++	at91_set_gpio_output(cpu_led, 1);
++	at91_set_gpio_output(timer_led, 1);
++
++	at91_leds_cpu   = cpu_led;
++	at91_leds_timer = timer_led;
++}
++#else
++void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
++#endif
+ 
+ /* --------------------------------------------------------------------
+  *  SSC -- Synchronous Serial Controller
+diff -urN linux-2.6.25.10.old/arch/arm/mach-at91/Makefile linux-2.6.25.10/arch/arm/mach-at91/Makefile
+--- linux-2.6.25.10.old/arch/arm/mach-at91/Makefile	2008-07-06 09:01:54.000000000 +0200
++++ linux-2.6.25.10/arch/arm/mach-at91/Makefile	2008-07-06 09:45:08.000000000 +0200
+@@ -60,7 +60,12 @@
+ obj-$(CONFIG_MACH_AT91EB01)	+= board-eb01.o
+ 
+ # Drivers
+-obj-y				+= leds.o
++ifeq ($(CONFIG_MACH_VLINK),y)
++led-$(CONFIG_MACH_VLINK)	+= vlink_leds.o
++else
++led-y				+= leds.o
++endif
++obj-y				+= $(led-y)
+ obj-$(CONFIG_FB_S1D13XXX)	+= ics1523.o
+ 
+ # Power Management
+diff -urN linux-2.6.25.10.old/arch/arm/mach-at91/vlink_leds.c linux-2.6.25.10/arch/arm/mach-at91/vlink_leds.c
+--- linux-2.6.25.10.old/arch/arm/mach-at91/vlink_leds.c	1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.25.10/arch/arm/mach-at91/vlink_leds.c	2008-07-06 09:40:37.000000000 +0200
+@@ -0,0 +1,105 @@
++/*
++ * LED driver for Atmel AT91-based boards.
++ *
++ *  Copyright (C) SAN People (Pty) Ltd
++ *	Modified for FDL VersaLink Copyright (C) Guthrie Consulting
++ *
++ * 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.
++*/
++
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/init.h>
++
++#include <asm/mach-types.h>
++#include <asm/leds.h>
++#include <asm/arch/board.h>
++#include <asm/arch/gpio.h>
++
++
++static inline void at91_led_on(unsigned int led)
++{
++	at91_set_gpio_value(led, 0);
++}
++
++static inline void at91_led_off(unsigned int led)
++{
++	at91_set_gpio_value(led, 1);
++}
++
++static inline void at91_led_toggle(unsigned int led)
++{
++	unsigned long is_off = at91_get_gpio_value(led);
++	if (is_off) {
++		at91_led_on(led);
++		at91_led_off(at91_leds_cpu);
++		}
++	else {
++		at91_led_on(at91_leds_cpu);
++		at91_led_off(led);
++		}
++}
++
++
++/*
++ * Handle LED events.
++ */
++
++/*
++ * VersaLink has a single bi-coloured LED which changes colour when the
++ * polarity is reversed
++ */
++static void at91_leds_event(led_event_t evt)
++{
++	unsigned long flags;
++
++	local_irq_save(flags);
++
++	switch(evt) {
++	case led_start:		/* System startup */
++		at91_led_toggle(at91_leds_timer);
++		break;
++
++	case led_stop:		/* System stop / suspend */
++		at91_led_toggle(at91_leds_timer);
++		break;
++
++#ifdef CONFIG_LEDS_TIMER
++	case led_timer:		/* Every 50 timer ticks */
++		at91_led_toggle(at91_leds_timer);
++		break;
++#endif
++
++#ifdef CONFIG_LEDS_CPU
++	case led_idle_start:	/* Entering idle state */
++		at91_led_toggle(at91_leds_timer);
++		break;
++
++	case led_idle_end:	/* Exit idle state */
++		at91_led_toggle(at91_leds_timer);
++		break;
++#endif
++
++	default:
++		break;
++	}
++
++	local_irq_restore(flags);
++}
++
++
++static int __init leds_init(void)
++{
++	if (!at91_leds_timer || !at91_leds_cpu)
++		return -ENODEV;
++
++	leds_event = at91_leds_event;
++
++	leds_event(led_start);
++	return 0;
++}
++
++__initcall(leds_init);
+diff -urN linux-2.6.25.10.old/include/asm-arm/arch-at91/board.h linux-2.6.25.10/include/asm-arm/arch-at91/board.h
+--- linux-2.6.25.10.old/include/asm-arm/arch-at91/board.h	2008-07-06 09:01:54.000000000 +0200
++++ linux-2.6.25.10/include/asm-arm/arch-at91/board.h	2008-07-06 09:56:31.000000000 +0200
+@@ -162,6 +162,11 @@
+  /* ISI */
+ extern void __init at91_add_device_isi(void);
+ 
++ /* LEDs */
++extern u8 at91_leds_cpu;
++extern u8 at91_leds_timer;
++extern void __init at91_init_leds(u8 cpu_led, u8 timer_led);
++
+  /* Touchscreen Controller */
+ extern void __init at91_add_device_tsadcc(void);
+ 
diff --git a/target/linux/at91/patches-2.6.25/003-gpio-driver.patch b/target/linux/at91/patches-2.6.25/003-gpio-driver.patch
new file mode 100644
index 0000000000..e81c771c0c
--- /dev/null
+++ b/target/linux/at91/patches-2.6.25/003-gpio-driver.patch
@@ -0,0 +1,552 @@
+diff -urN linux-2.6.25.10.old/arch/arm/mach-at91/board-vlink.c linux-2.6.25.10/arch/arm/mach-at91/board-vlink.c
+--- linux-2.6.25.10.old/arch/arm/mach-at91/board-vlink.c	2008-07-07 11:20:21.000000000 +0200
++++ linux-2.6.25.10/arch/arm/mach-at91/board-vlink.c	2008-07-07 12:11:40.000000000 +0200
+@@ -99,7 +99,7 @@
+ */
+ 
+ static struct at91_mmc_data __initdata vlink_mmc_data = {
+-//	.det_pin	= AT91_PIN_PB27,
++//	.det_pin	= AT91_PIN_PC10,
+ 	.slot_b		= 0,
+ 	.wire4		= 1,
+ //	.wp_pin		= AT91_PIN_PA17,
+@@ -136,6 +136,7 @@
+ 
+ static void __init vlink_board_init(void)
+ {
++	int v100;
+ 	/* Serial */
+ 	at91_add_device_serial();
+ 	/* Ethernet */
+@@ -157,36 +158,66 @@
+ //	at91_set_gpio_output(AT91_PIN_PB22, 1);	/* this MMC card slot can optionally use SPI signaling (CS3). */
+ 	at91_add_device_mmc(0, &vlink_mmc_data);
+ #endif
++
++// Set VLink version PIN as an input with pull-up (V1.5 = GND)
++	at91_set_gpio_input(AT91_PIN_PC2, 1);
++	v100 = at91_get_gpio_value(AT91_PIN_PC2);
++
+ 	/* LEDs */
+ //	at91_gpio_leds(vlink_leds, ARRAY_SIZE(vlink_leds));
+ 
+ /* Other LED's */
+-       at91_set_gpio_output(AT91_PIN_PC7, 1);  // LED FRONT AP1
+-       at91_set_gpio_output(AT91_PIN_PC8, 1);  // LED FRONT BP1
+-       at91_set_gpio_output(AT91_PIN_PB14, 1); // LED BACK AP1
+-       at91_set_gpio_output(AT91_PIN_PB15, 1); // LED BACK BP1
+-       at91_set_gpio_output(AT91_PIN_PB16, 1); // LED BACK AP2
+-       at91_set_gpio_output(AT91_PIN_PB17, 1); // LED BACK BP2
++	at91_set_gpio_output(AT91_PIN_PC7, 1);  // LED FRONT AP1
++	at91_set_gpio_output(AT91_PIN_PC8, 1);  // LED FRONT BP1
++	at91_set_gpio_output(AT91_PIN_PB14, 1); // LED BACK AP1
++	at91_set_gpio_output(AT91_PIN_PB15, 1); // LED BACK BP1
++	at91_set_gpio_output(AT91_PIN_PB16, 1); // LED BACK AP2
++	at91_set_gpio_output(AT91_PIN_PB17, 1); // LED BACK BP2
++
++/* Test jig presence detection */
++	at91_set_gpio_input(AT91_PIN_PB8, 1);   // JIGPRESENT
+ 
+ /* SIM Cards */
+-       at91_set_gpio_output(AT91_PIN_PB9, 1);  // ENBSC3
+-       at91_set_gpio_output(AT91_PIN_PB10, 1); // ENBSC2
+-       at91_set_gpio_output(AT91_PIN_PB11, 1); // ENBSC1
++	if (at91_get_gpio_value(AT91_PIN_PB8)) {
++		at91_set_gpio_output(AT91_PIN_PB11, 0);
++		if (v100)
++			at91_set_gpio_output(AT91_PIN_PB9, 1);
++		else
++			at91_set_gpio_output(AT91_PIN_PC13, 1);
++	} else {
++		at91_set_gpio_output(AT91_PIN_PB11, 1);
++		if (v100)
++			at91_set_gpio_output(AT91_PIN_PB9, 0);
++		else
++			at91_set_gpio_output(AT91_PIN_PC13, 0);
++	}
+ 
+-/* GSM Module Control */
+-       at91_set_gpio_output(AT91_PIN_PB12, 1); // GSMONOFF
++        at91_set_gpio_output(AT91_PIN_PB10, 1); // ENBSC2
+ 
+-/* Test jig presence detection */
+-       at91_set_gpio_input(AT91_PIN_PB8, 1);   // JIGPRESENT
++/* GSM Module Control */
++	at91_set_gpio_output(AT91_PIN_PB12, 1); // GSMONOFF
+ 
+ /* Power indicator */
+-       at91_set_gpio_input(AT91_PIN_PB22, 1);  // PWR_IND
++	at91_set_gpio_input(AT91_PIN_PB22, 1);  // PWR_IND
+ 
+ /* USB Device control */
+-       at91_set_gpio_input(AT91_PIN_PB27, 1);  // UDB_CNX
+-       at91_set_gpio_output(AT91_PIN_PB28, 1); // UDB_PUP
+-			 at91_set_multi_drive(AT91_PIN_PB28, 1); // Set to multi-drive
+-
++	at91_set_gpio_input(AT91_PIN_PB27, 1);  // UDB_CNX
++	at91_set_gpio_output(AT91_PIN_PB28, 1); // UDB_PUP
++	at91_set_multi_drive(AT91_PIN_PB28, 1); // Set to multi-drive
++
++/* USB Power controls */
++
++	if (v100)
++	{       // V100
++		at91_set_gpio_input (AT91_PIN_PC12, 1);   // SD Card present
++	}
++	else
++	{       // DO special things for V1.5
++		at91_set_gpio_output(AT91_PIN_PB9 , 0);   // USB suspend
++		at91_set_gpio_input (AT91_PIN_PC10, 1);   // SD Card present
++		at91_set_gpio_output(AT91_PIN_PC11, 0);   // USB Vin CTRL for modules onboard
++		at91_set_gpio_output(AT91_PIN_PC12, 0);   // SIM control
++	}
+ }
+ 
+ MACHINE_START(VLINK, "FDL VersaLink")
+diff -urN linux-2.6.25.10.old/arch/arm/mach-at91/gpio.c linux-2.6.25.10/arch/arm/mach-at91/gpio.c
+--- linux-2.6.25.10.old/arch/arm/mach-at91/gpio.c	2008-07-07 11:20:21.000000000 +0200
++++ linux-2.6.25.10/arch/arm/mach-at91/gpio.c	2008-07-07 11:42:33.000000000 +0200
+@@ -29,6 +29,7 @@
+ 
+ static struct at91_gpio_bank *gpio;
+ static int gpio_banks;
++static u32 pio_gpio_pin[4] = { 0, 0, 0, 0 };
+ 
+ 
+ static inline void __iomem *pin_to_controller(unsigned pin)
+@@ -71,9 +72,13 @@
+ {
+ 	void __iomem	*pio = pin_to_controller(pin);
+ 	unsigned	mask = pin_to_mask(pin);
++	int bank = (pin - PIN_BASE) / 32;
+ 
+ 	if (!pio)
+ 		return -EINVAL;
++
++	pio_gpio_pin[bank] |= mask;
++
+ 	__raw_writel(mask, pio + PIO_IDR);
+ 	__raw_writel(mask, pio + (use_pullup ? PIO_PUER : PIO_PUDR));
+ 	__raw_writel(mask, pio + PIO_PER);
+@@ -130,10 +135,13 @@
+ {
+ 	void __iomem	*pio = pin_to_controller(pin);
+ 	unsigned	mask = pin_to_mask(pin);
++	int bank = (pin - PIN_BASE) / 32;
+ 
+ 	if (!pio)
+ 		return -EINVAL;
+ 
++	pio_gpio_pin[bank] |= mask;
++
+ 	__raw_writel(mask, pio + PIO_IDR);
+ 	__raw_writel(mask, pio + (use_pullup ? PIO_PUER : PIO_PUDR));
+ 	__raw_writel(mask, pio + PIO_ODR);
+@@ -151,10 +159,13 @@
+ {
+ 	void __iomem	*pio = pin_to_controller(pin);
+ 	unsigned	mask = pin_to_mask(pin);
++	int bank = (pin - PIN_BASE) / 32;
+ 
+ 	if (!pio)
+ 		return -EINVAL;
+ 
++	pio_gpio_pin[bank] |= mask;
++
+ 	__raw_writel(mask, pio + PIO_IDR);
+ 	__raw_writel(mask, pio + PIO_PUDR);
+ 	__raw_writel(mask, pio + (value ? PIO_SODR : PIO_CODR));
+@@ -262,6 +273,18 @@
+ }
+ EXPORT_SYMBOL(at91_get_gpio_value);
+ 
++int at91_is_pin_gpio(unsigned pin)
++{
++	void __iomem  *pio = pin_to_controller(pin);
++	unsigned  mask = pin_to_mask(pin);
++	int     bank = (pin - PIN_BASE) / 32;
++
++	if (!pio)
++		return -EINVAL;
++	return (pio_gpio_pin[bank] & mask) != 0;
++}
++EXPORT_SYMBOL(at91_is_pin_gpio);
++
+ /*--------------------------------------------------------------------------*/
+ 
+ #ifdef CONFIG_PM
+diff -urN linux-2.6.25.10.old/drivers/char/Kconfig linux-2.6.25.10/drivers/char/Kconfig
+--- linux-2.6.25.10.old/drivers/char/Kconfig	2008-07-07 11:20:21.000000000 +0200
++++ linux-2.6.25.10/drivers/char/Kconfig	2008-07-07 11:42:33.000000000 +0200
+@@ -1072,5 +1072,12 @@
+ 	  The SPI driver gives user mode access to this serial
+ 	  bus on the AT91RM9200 processor.
+ 
++config AT91_VLIO
++	tristate "Versalink LED and GPIO interface"
++	depends on ARCH_AT91RM9200 && MACH_VLINK
++	default n
++	help
++	  Provides a handler GPIO's in userspace
++
+ endmenu
+ 
+diff -urN linux-2.6.25.10.old/drivers/char/Makefile linux-2.6.25.10/drivers/char/Makefile
+--- linux-2.6.25.10.old/drivers/char/Makefile	2008-07-07 11:20:21.000000000 +0200
++++ linux-2.6.25.10/drivers/char/Makefile	2008-07-07 11:42:33.000000000 +0200
+@@ -100,6 +100,7 @@
+ obj-$(CONFIG_TELCLOCK)		+= tlclk.o
+ obj-$(CONFIG_AT91_SPI)		+= at91_spi.o
+ obj-$(CONFIG_AT91_SPIDEV)	+= at91_spidev.o
++obj-$(CONFIG_AT91_VLIO)		+= vlink_giu.o
+ 
+ obj-$(CONFIG_MWAVE)		+= mwave/
+ obj-$(CONFIG_AGP)		+= agp/
+diff -urN linux-2.6.25.10.old/drivers/char/vlink_giu.c linux-2.6.25.10/drivers/char/vlink_giu.c
+--- linux-2.6.25.10.old/drivers/char/vlink_giu.c	1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.25.10/drivers/char/vlink_giu.c	2008-07-07 13:41:51.000000000 +0200
+@@ -0,0 +1,333 @@
++/*
++ *  Driver for FDL Versalink GPIO
++ *
++ *  Copyright (C) 2005 Guthrie Consulting
++ *	Author: Hamish Guthrie <hamish@prodigi.ch>
++ *
++ *  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
++ */
++
++#include <linux/module.h>
++#include <linux/moduleparam.h>
++#include <linux/init.h>
++#include <linux/platform_device.h>
++
++#include <linux/kernel.h>
++#include <linux/slab.h>
++#include <linux/fs.h>
++#include <linux/errno.h>
++#include <linux/init.h>
++#include <linux/types.h>
++#include <linux/proc_fs.h>
++#include <linux/fcntl.h>
++#include <linux/seq_file.h>
++#include <linux/cdev.h>
++#include <asm/arch/gpio.h>
++#include <asm/uaccess.h>
++
++static int major;	/* default is dynamic major device number */
++module_param(major, int, 0);
++MODULE_PARM_DESC(major, "Major device number");
++
++#define VIO_NR_DEVS	96
++
++struct vio_dev {
++	struct cdev cdev;
++};
++
++struct vio_dev *vio_devices;
++static struct class *vio_class;
++
++#define MAX_VIO_NAMES	24
++typedef struct
++{
++	char port;
++	char pin;
++	char name100[10];
++	char name150[10];
++} VIO_NAMES;
++
++VIO_NAMES VioName[MAX_VIO_NAMES] = 
++{ 	// Port, Pin, V100, V150
++	{'A',19,"port1DTR" ,"port1DTR"},
++	{'A',24,"port2DTR" ,"port2DTR"},
++	{'B',8, "jigOn"    ,"jigOn"} ,
++	{'B',9, "enbSC3"   ,"usbSUSPND"},
++	{'B',10,"enbSC2"   ,"enbSC2"},
++	{'B',11,"enbSC1"   ,"enbSC1"},
++	{'B',12,"gsmONOFF" ,"gsmONOFF"},
++	{'B',14,"ledBAP1"  ,"ledBAP1"},
++	{'B',15,"ledBBP1"  ,"ledBBP1"},
++	{'B',16,"ledBAP2"  ,"ledBAP2"},
++	{'B',17,"ledBBP2"  ,"ledBBP2"},
++	{'B',27,"udpCNX"   ,"udpCNX"},
++	{'B',28,"udpPUP"   ,"udpPUP"},
++	{'B',29,"port2DCD" ,"port2DCD"},
++	{'C',2, "vlVer100" ,"vlVer150"},
++	{'C',7, "ledFAP1"  ,"ledFAP1"},
++	{'C',8, "ledFBP1"  ,"ledFBP1"},
++	{'C',10,"vioC10"   ,"sdCardON"},
++	{'C',11,"vioC11"   ,"vusbCTRL"},
++	{'C',12,"sdCardON" ,"simCTRL"},
++	{'C',13,"vioC13"   ,"enbSC3"},
++	{'C',14,"ledFBP2"  ,"ledFBP2"},
++	{'C',15,"ledFAP2"  ,"ledFAP2"},
++	{0,0,"",""}
++};
++
++/*
++{'B',18,"gsmRIO"  ,"gsmRIO"},
++{'B',20,"gsmTX"   ,"gsmTX"},
++{'B',21,"gsmRX"   ,"gsmRX"},
++{'B',22,"gsmPIND" ,"gsmPIND"},
++{'B',23,"gsmDCD"  ,"gsmDCD"},
++{'B',24,"gsmCTS"  ,"gsmCTS"},
++{'B',25,"gsmDSR"  ,"gsmDSR"},
++{'B',26,"gsmRTS"  ,"gsmRTS"},
++*/
++static void lookupPINName(char version100, char *devName, char port, char pin);
++// EOF KWJ + AJE
++
++static ssize_t gpio_read(struct file *file, char __user *buf, size_t len,
++                         loff_t *ppos)
++{
++	unsigned int pin;
++	int retval;
++	char value = '0';
++
++	pin = iminor(file->f_dentry->d_inode);
++
++	retval = at91_get_gpio_value(PIN_BASE + pin);
++	if (retval < 0)
++		return -EFAULT;
++
++	value = retval + 0x30;
++	if (put_user(value, buf))
++		return -EFAULT;
++
++	return 1;
++}
++
++static ssize_t gpio_write(struct file *file, const char __user *data,
++                          size_t len, loff_t *ppos)
++{
++	unsigned int pin;
++	size_t i;
++	char c;
++	int retval = 0;
++
++	pin = iminor(file->f_dentry->d_inode);
++
++	for (i = 0; i < len; i++) {
++		if (get_user(c, data + i))
++			return -EFAULT;
++
++		switch (c) {
++		case '0':
++		case '1':
++			retval = at91_set_gpio_value(PIN_BASE + pin, (int)c - 0x30);
++			if (retval < 0)
++				return -EFAULT;
++			break;
++		default:
++			break;
++		}
++
++		if (retval < 0)
++			break;
++	}
++
++	return i;
++}
++
++static int gpio_open(struct inode *inode, struct file *file)
++{
++	return nonseekable_open(inode, file);
++}
++
++static int gpio_release(struct inode *inode, struct file *file)
++{
++	return 0;
++}
++
++static struct file_operations vio_fops = {
++	.owner		= THIS_MODULE,
++	.read		= gpio_read,
++	.write		= gpio_write,
++	.open		= gpio_open,
++	.release	= gpio_release,
++};
++
++static void vio_setup_cdev(struct vio_dev *dev, int index)
++{
++	int err, devno = MKDEV(major, index);
++
++	cdev_init(&dev->cdev, &vio_fops);
++	dev->cdev.owner = THIS_MODULE;
++	dev->cdev.ops = &vio_fops;
++	err = cdev_add (&dev->cdev, devno, 1);
++	if (err)
++		printk(KERN_NOTICE "vio: Error %d adding vio%d", err, index);
++}
++
++static int vio_remove(struct platform_device *dev)
++{
++	int i;
++	dev_t devno = MKDEV(major, 0);
++
++	if (vio_devices) {
++		for(i=0; i<VIO_NR_DEVS; i++) {
++			int iodev = at91_is_pin_gpio(PIN_BASE + i);
++			if (iodev) {
++				cdev_del(&vio_devices[i].cdev);
++				class_device_destroy(vio_class, MKDEV(major, i));
++			}
++		}
++		kfree(vio_devices);
++	}
++
++	class_destroy(vio_class);
++	unregister_chrdev_region(devno, VIO_NR_DEVS);
++
++	platform_set_drvdata(dev, NULL);
++
++	return 0;
++}
++
++static int vio_probe(struct platform_device *dev)
++{
++	int retval, i, j;
++	dev_t vdev = 0;
++	char devName[30];
++	int vlinkV100;
++
++	if (major) {
++		vdev = MKDEV(major, 0);
++		retval = register_chrdev_region(vdev, VIO_NR_DEVS, "vio");
++	} else {
++		retval = alloc_chrdev_region(&vdev, 0, VIO_NR_DEVS, "vio");
++		major = MAJOR(vdev);
++	}
++	if (retval < 0) {
++		printk(KERN_WARNING "vio: can't get major %d\n", major);
++		return retval;
++	}
++
++	if (major == 0) {
++		major = retval;
++		printk(KERN_INFO "vio: major number %d\n", major);
++	}
++
++	vio_class = class_create(THIS_MODULE, "vio");
++
++	if (IS_ERR(vio_class)) {
++		printk(KERN_ERR "vio: Error creating vio class\n");
++		vio_remove(dev);
++		return PTR_ERR(vio_class);
++	}
++
++	vlinkV100 = at91_get_gpio_value(AT91_PIN_PC2); // Denotes V1.5 if GND
++
++	vio_devices = kmalloc(VIO_NR_DEVS * sizeof(struct vio_dev), GFP_KERNEL);
++	if (!vio_devices) {
++		retval = -ENOMEM;
++		goto fail;
++	}
++	memset(vio_devices, 0, VIO_NR_DEVS * sizeof(struct vio_dev));
++
++	for (i=0; i<VIO_NR_DEVS/32; i++)
++		for(j=0; j<32; j++) {
++			int iodev = at91_is_pin_gpio(PIN_BASE + i*32 + j);
++			if (iodev) {
++				vio_setup_cdev(&vio_devices[i*32 + j], i*32 + j);
++				// Lookup name of vio to create
++				lookupPINName(vlinkV100, devName, i, j);
++				class_device_create(vio_class, NULL, MKDEV(major, i*32 + j), NULL, devName);
++			}
++		}
++
++	platform_set_drvdata(dev, vio_devices);
++
++	return 0;
++
++fail:
++	vio_remove(dev);
++	return retval;
++}
++
++static void lookupPINName(char version100, char *devName, char port, char pin)
++{
++	int i = -1;
++	char found = 0;
++	while (!found)
++	{
++		i++;
++		if (i >= MAX_VIO_NAMES)
++			break;
++		if (VioName[i].port == port+'A' && VioName[i].pin == pin)
++		{
++			printk(KERN_ERR "vio++: %c%d=%s\n",VioName[i].port,VioName[i].pin,VioName[i].name150);
++			if (version100)
++				strcpy(devName, VioName[i].name100);
++			else
++				strcpy(devName, VioName[i].name150);
++			found = 1;
++		}
++	}
++	if (!found)
++		sprintf(devName, "vio%c%d", port + 'A', pin);
++}
++	
++static struct platform_device *vio_platform_device;
++
++static struct platform_driver vio_driver = {
++	.probe 		= vio_probe,
++	.remove		= vio_remove,
++	.driver		= {
++		.name	= "vio",
++		.owner	= THIS_MODULE,
++	},
++};
++
++static int __init vio_init(void)
++{
++	int retval;
++
++	vio_platform_device = platform_device_register_simple("vio", -1, NULL, 0);
++	if (IS_ERR(vio_platform_device)) {
++		printk(KERN_WARNING "vio: device registration failed\n");
++		return PTR_ERR(vio_platform_device);
++	}
++
++	retval = platform_driver_register(&vio_driver);
++	if (retval < 0) {
++		printk(KERN_WARNING "vio: driver registration failed\n");
++		platform_device_unregister(vio_platform_device);
++	}
++	
++	return retval;
++}
++
++static void __exit vio_exit(void)
++{
++	platform_driver_unregister(&vio_driver);
++	platform_device_unregister(vio_platform_device);
++}
++
++module_init(vio_init);
++module_exit(vio_exit);
++
++MODULE_AUTHOR("Hamish Guthrie <hamish@prodigi.ch>");
++MODULE_DESCRIPTION("FDL Versalink GPIO Driver");
++MODULE_LICENSE("GPL");
+--- linux-2.6.25.10.old/include/asm-arm/arch-at91/gpio.h	2008-07-03 05:46:47.000000000 +0200
++++ linux-2.6.25.10/include/asm-arm/arch-at91/gpio.h	2008-07-07 17:03:03.000000000 +0200
+@@ -199,6 +199,7 @@
+ /* callable at any time */
+ extern int at91_set_gpio_value(unsigned pin, int value);
+ extern int at91_get_gpio_value(unsigned pin);
++extern int at91_is_pin_gpio(unsigned pin);
+ 
+ /* callable only from core power-management code */
+ extern void at91_gpio_suspend(void);