gpio: move U300 GPIO driver to drivers/gpio

This moves the U300 GPIO driver out of arch/arm/mach-u300 and into
the desired location indicated by the subsystem maintainer.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

2 files changed, 1 insertions, 701 deletions

diff --git a/arch/arm/mach-u300/Makefile b/arch/arm/mach-u300/Makefile
index fab46fe9a71..8fd354aaf0a 100644
--- a/arch/arm/mach-u300/Makefile
+++ b/arch/arm/mach-u300/Makefile
@@ -2,7 +2,7 @@
 # Makefile for the linux kernel, U300 machine.
 #
 
-obj-y		:= core.o clock.o timer.o gpio.o padmux.o
+obj-y		:= core.o clock.o timer.o padmux.o
 obj-m		:=
 obj-n		:=
 obj-		:=
diff --git a/arch/arm/mach-u300/gpio.c b/arch/arm/mach-u300/gpio.c
deleted file mode 100644
index d92790140fe..00000000000
--- a/arch/arm/mach-u300/gpio.c
+++ /dev/null
@@ -1,700 +0,0 @@
-/*
- *
- * arch/arm/mach-u300/gpio.c
- *
- *
- * Copyright (C) 2007-2009 ST-Ericsson AB
- * License terms: GNU General Public License (GPL) version 2
- * U300 GPIO module.
- * This can driver either of the two basic GPIO cores
- * available in the U300 platforms:
- * COH 901 335   - Used in DB3150 (U300 1.0) and DB3200 (U330 1.0)
- * COH 901 571/3 - Used in DB3210 (U365 2.0) and DB3350 (U335 1.0)
- * Notice that you also have inline macros in <asm-arch/gpio.h>
- * Author: Linus Walleij <linus.walleij@stericsson.com>
- * Author: Jonas Aaberg <jonas.aberg@stericsson.com>
- *
- */
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/io.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/platform_device.h>
-#include <linux/gpio.h>
-
-/* Reference to GPIO block clock */
-static struct clk *clk;
-
-/* Memory resource */
-static struct resource *memres;
-static void __iomem *virtbase;
-static struct device *gpiodev;
-
-struct u300_gpio_port {
-	const char *name;
-	int irq;
-	int number;
-};
-
-
-static struct u300_gpio_port gpio_ports[] = {
-	{
-		.name = "gpio0",
-		.number = 0,
-	},
-	{
-		.name = "gpio1",
-		.number = 1,
-	},
-	{
-		.name = "gpio2",
-		.number = 2,
-	},
-#ifdef U300_COH901571_3
-	{
-		.name = "gpio3",
-		.number = 3,
-	},
-	{
-		.name = "gpio4",
-		.number = 4,
-	},
-#ifdef CONFIG_MACH_U300_BS335
-	{
-		.name = "gpio5",
-		.number = 5,
-	},
-	{
-		.name = "gpio6",
-		.number = 6,
-	},
-#endif
-#endif
-
-};
-
-
-#ifdef U300_COH901571_3
-
-/* Default input value */
-#define DEFAULT_OUTPUT_LOW   0
-#define DEFAULT_OUTPUT_HIGH  1
-
-/* GPIO Pull-Up status */
-#define DISABLE_PULL_UP  0
-#define ENABLE_PULL_UP  1
-
-#define GPIO_NOT_USED 0
-#define GPIO_IN       1
-#define GPIO_OUT      2
-
-struct u300_gpio_configuration_data {
-	unsigned char pin_usage;
-	unsigned char default_output_value;
-	unsigned char pull_up;
-};
-
-/* Initial configuration */
-const struct u300_gpio_configuration_data
-u300_gpio_config[U300_GPIO_NUM_PORTS][U300_GPIO_PINS_PER_PORT] = {
-#ifdef CONFIG_MACH_U300_BS335
-	/* Port 0, pins 0-7 */
-	{
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_HIGH,  DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP}
-	},
-	/* Port 1, pins 0-7 */
-	{
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_HIGH,  DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP}
-	},
-	/* Port 2, pins 0-7 */
-	{
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP}
-	},
-	/* Port 3, pins 0-7 */
-	{
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP}
-	},
-	/* Port 4, pins 0-7 */
-	{
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP}
-	},
-	/* Port 5, pins 0-7 */
-	{
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP}
-	},
-	/* Port 6, pind 0-7 */
-	{
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP}
-	}
-#endif
-
-#ifdef CONFIG_MACH_U300_BS365
-	/* Port 0, pins 0-7 */
-	{
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP}
-	},
-	/* Port 1, pins 0-7 */
-	{
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_HIGH,  DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP}
-	},
-	/* Port 2, pins 0-7 */
-	{
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,   DISABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP}
-	},
-	/* Port 3, pins 0-7 */
-	{
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP}
-	},
-	/* Port 4, pins 0-7 */
-	{
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_IN,  DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		/* These 4 pins doesn't exist on DB3210 */
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP},
-		{GPIO_OUT, DEFAULT_OUTPUT_LOW,    ENABLE_PULL_UP}
-	}
-#endif
-};
-#endif
-
-
-/* No users == we can power down GPIO */
-static int gpio_users;
-
-struct gpio_struct {
-	int (*callback)(void *);
-	void *data;
-	int users;
-};
-
-static struct gpio_struct gpio_pin[U300_GPIO_MAX];
-
-/*
- * Let drivers register callback in order to get notified when there is
- * an interrupt on the gpio pin
- */
-int gpio_register_callback(unsigned gpio, int (*func)(void *arg), void *data)
-{
-	if (gpio_pin[gpio].callback)
-		dev_warn(gpiodev, "%s: WARNING: callback already "
-			 "registered for gpio pin#%d\n", __func__, gpio);
-	gpio_pin[gpio].callback = func;
-	gpio_pin[gpio].data = data;
-
-	return 0;
-}
-EXPORT_SYMBOL(gpio_register_callback);
-
-int gpio_unregister_callback(unsigned gpio)
-{
-	if (!gpio_pin[gpio].callback)
-		dev_warn(gpiodev, "%s: WARNING: callback already "
-			 "unregistered for gpio pin#%d\n", __func__, gpio);
-	gpio_pin[gpio].callback = NULL;
-	gpio_pin[gpio].data = NULL;
-
-	return 0;
-}
-EXPORT_SYMBOL(gpio_unregister_callback);
-
-/* Non-zero means valid */
-int gpio_is_valid(int number)
-{
-	if (number >= 0 &&
-	    number < (U300_GPIO_NUM_PORTS * U300_GPIO_PINS_PER_PORT))
-		return 1;
-	return 0;
-}
-EXPORT_SYMBOL(gpio_is_valid);
-
-int gpio_request(unsigned gpio, const char *label)
-{
-	if (gpio_pin[gpio].users)
-		return -EINVAL;
-	else
-		gpio_pin[gpio].users++;
-
-	gpio_users++;
-
-	return 0;
-}
-EXPORT_SYMBOL(gpio_request);
-
-void gpio_free(unsigned gpio)
-{
-	gpio_users--;
-	gpio_pin[gpio].users--;
-	if (unlikely(gpio_pin[gpio].users < 0)) {
-		dev_warn(gpiodev, "warning: gpio#%d release mismatch\n",
-			 gpio);
-		gpio_pin[gpio].users = 0;
-	}
-
-	return;
-}
-EXPORT_SYMBOL(gpio_free);
-
-/* This returns zero or nonzero */
-int gpio_get_value(unsigned gpio)
-{
-	return readl(virtbase + U300_GPIO_PXPDIR +
-	  PIN_TO_PORT(gpio) * U300_GPIO_PORTX_SPACING) & (1 << (gpio & 0x07));
-}
-EXPORT_SYMBOL(gpio_get_value);
-
-/*
- * We hope that the compiler will optimize away the unused branch
- * in case "value" is a constant
- */
-void gpio_set_value(unsigned gpio, int value)
-{
-	u32 val;
-	unsigned long flags;
-
-	local_irq_save(flags);
-	if (value) {
-		/* set */
-		val = readl(virtbase + U300_GPIO_PXPDOR +
-		  PIN_TO_PORT(gpio) * U300_GPIO_PORTX_SPACING)
-		  & (1 << (gpio & 0x07));
-		writel(val | (1 << (gpio & 0x07)), virtbase +
-		  U300_GPIO_PXPDOR +
-		  PIN_TO_PORT(gpio) * U300_GPIO_PORTX_SPACING);
-	} else {
-		/* clear */
-		val = readl(virtbase + U300_GPIO_PXPDOR +
-		  PIN_TO_PORT(gpio) * U300_GPIO_PORTX_SPACING)
-		  & (1 << (gpio & 0x07));
-		writel(val & ~(1 << (gpio & 0x07)), virtbase +
-		  U300_GPIO_PXPDOR +
-		  PIN_TO_PORT(gpio) * U300_GPIO_PORTX_SPACING);
-	}
-	local_irq_restore(flags);
-}
-EXPORT_SYMBOL(gpio_set_value);
-
-int gpio_direction_input(unsigned gpio)
-{
-	unsigned long flags;
-	u32 val;
-
-	if (gpio > U300_GPIO_MAX)
-		return -EINVAL;
-
-	local_irq_save(flags);
-	val = readl(virtbase + U300_GPIO_PXPCR + PIN_TO_PORT(gpio) *
-				U300_GPIO_PORTX_SPACING);
-	/* Mask out this pin*/
-	val &= ~(U300_GPIO_PXPCR_PIN_MODE_MASK << ((gpio & 0x07) << 1));
-	/* This is not needed since it sets the bits to zero.*/
-	/* val |= (U300_GPIO_PXPCR_PIN_MODE_INPUT << (gpio*2)); */
-	writel(val, virtbase + U300_GPIO_PXPCR + PIN_TO_PORT(gpio) *
-				U300_GPIO_PORTX_SPACING);
-	local_irq_restore(flags);
-	return 0;
-}
-EXPORT_SYMBOL(gpio_direction_input);
-
-int gpio_direction_output(unsigned gpio, int value)
-{
-	unsigned long flags;
-	u32 val;
-
-	if (gpio > U300_GPIO_MAX)
-		return -EINVAL;
-
-	local_irq_save(flags);
-	val = readl(virtbase + U300_GPIO_PXPCR + PIN_TO_PORT(gpio) *
-				U300_GPIO_PORTX_SPACING);
-	/* Mask out this pin */
-	val &= ~(U300_GPIO_PXPCR_PIN_MODE_MASK << ((gpio & 0x07) << 1));
-	/*
-	 * FIXME: configure for push/pull, open drain or open source per pin
-	 * in setup. The current driver will only support push/pull.
-	 */
-	val |= (U300_GPIO_PXPCR_PIN_MODE_OUTPUT_PUSH_PULL
-			<< ((gpio & 0x07) << 1));
-	writel(val, virtbase + U300_GPIO_PXPCR + PIN_TO_PORT(gpio) *
-				U300_GPIO_PORTX_SPACING);
-	gpio_set_value(gpio, value);
-	local_irq_restore(flags);
-	return 0;
-}
-EXPORT_SYMBOL(gpio_direction_output);
-
-/*
- * Enable an IRQ, edge is rising edge (!= 0) or falling edge (==0).
- */
-void enable_irq_on_gpio_pin(unsigned gpio, int edge)
-{
-	u32 val;
-	unsigned long flags;
-	local_irq_save(flags);
-
-	val = readl(virtbase + U300_GPIO_PXIEN + PIN_TO_PORT(gpio) *
-				U300_GPIO_PORTX_SPACING);
-	val |= (1 << (gpio & 0x07));
-	writel(val, virtbase + U300_GPIO_PXIEN + PIN_TO_PORT(gpio) *
-				U300_GPIO_PORTX_SPACING);
-	val = readl(virtbase + U300_GPIO_PXICR + PIN_TO_PORT(gpio) *
-				U300_GPIO_PORTX_SPACING);
-	if (edge)
-		val |= (1 << (gpio & 0x07));
-	else
-		val &= ~(1 << (gpio & 0x07));
-	writel(val, virtbase + U300_GPIO_PXICR + PIN_TO_PORT(gpio) *
-				U300_GPIO_PORTX_SPACING);
-	local_irq_restore(flags);
-}
-EXPORT_SYMBOL(enable_irq_on_gpio_pin);
-
-void disable_irq_on_gpio_pin(unsigned gpio)
-{
-	u32 val;
-	unsigned long flags;
-
-	local_irq_save(flags);
-	val = readl(virtbase + U300_GPIO_PXIEN + PIN_TO_PORT(gpio) *
-				U300_GPIO_PORTX_SPACING);
-	val &= ~(1 << (gpio & 0x07));
-	writel(val, virtbase + U300_GPIO_PXIEN + PIN_TO_PORT(gpio) *
-				U300_GPIO_PORTX_SPACING);
-	local_irq_restore(flags);
-}
-EXPORT_SYMBOL(disable_irq_on_gpio_pin);
-
-/* Enable (value == 0) or disable (value == 1) internal pullup */
-void gpio_pullup(unsigned gpio, int value)
-{
-	u32 val;
-	unsigned long flags;
-
-	local_irq_save(flags);
-	if (value) {
-		val = readl(virtbase + U300_GPIO_PXPER + PIN_TO_PORT(gpio) *
-					U300_GPIO_PORTX_SPACING);
-		writel(val | (1 << (gpio & 0x07)), virtbase + U300_GPIO_PXPER +
-				PIN_TO_PORT(gpio) * U300_GPIO_PORTX_SPACING);
-	} else {
-		val = readl(virtbase + U300_GPIO_PXPER + PIN_TO_PORT(gpio) *
-					U300_GPIO_PORTX_SPACING);
-		writel(val & ~(1 << (gpio & 0x07)), virtbase + U300_GPIO_PXPER +
-				PIN_TO_PORT(gpio) * U300_GPIO_PORTX_SPACING);
-	}
-	local_irq_restore(flags);
-}
-EXPORT_SYMBOL(gpio_pullup);
-
-static irqreturn_t gpio_irq_handler(int irq, void *dev_id)
-{
-	struct u300_gpio_port *port = dev_id;
-	u32 val;
-	int pin;
-
-	/* Read event register */
-	val = readl(virtbase + U300_GPIO_PXIEV + port->number *
-				U300_GPIO_PORTX_SPACING);
-	/* Mask with enable register */
-	val &= readl(virtbase + U300_GPIO_PXIEV + port->number *
-				U300_GPIO_PORTX_SPACING);
-	/* Mask relevant bits */
-	val &= U300_GPIO_PXIEV_ALL_IRQ_EVENT_MASK;
-	/* ACK IRQ (clear event) */
-	writel(val, virtbase + U300_GPIO_PXIEV + port->number *
-				U300_GPIO_PORTX_SPACING);
-	/* Print message */
-	while (val != 0) {
-		unsigned gpio;
-
-		pin = __ffs(val);
-		/* mask off this pin */
-		val &= ~(1 << pin);
-		gpio = (port->number << 3) + pin;
-
-		if (gpio_pin[gpio].callback)
-			(void)gpio_pin[gpio].callback(gpio_pin[gpio].data);
-		else
-			dev_dbg(gpiodev, "stray GPIO IRQ on line %d\n",
-			       gpio);
-	}
-	return IRQ_HANDLED;
-}
-
-static void gpio_set_initial_values(void)
-{
-#ifdef U300_COH901571_3
-	int i, j;
-	unsigned long flags;
-	u32 val;
-
-	/* Write default values to all pins */
-	for (i = 0; i < U300_GPIO_NUM_PORTS; i++) {
-		val = 0;
-		for (j = 0; j < 8; j++)
-			val |= (u32) (u300_gpio_config[i][j].default_output_value != DEFAULT_OUTPUT_LOW) << j;
-		local_irq_save(flags);
-		writel(val, virtbase + U300_GPIO_PXPDOR + i * U300_GPIO_PORTX_SPACING);
-		local_irq_restore(flags);
-	}
-
-	/*
-	 * Put all pins that are set to either 'GPIO_OUT' or 'GPIO_NOT_USED'
-	 * to output and 'GPIO_IN' to input for each port. And initialize
-	 * default value on outputs.
-	 */
-	for (i = 0; i < U300_GPIO_NUM_PORTS; i++) {
-		for (j = 0; j < U300_GPIO_PINS_PER_PORT; j++) {
-			local_irq_save(flags);
-			val = readl(virtbase + U300_GPIO_PXPCR +
-					 i * U300_GPIO_PORTX_SPACING);
-			/* Mask out this pin */
-			val &= ~(U300_GPIO_PXPCR_PIN_MODE_MASK << (j << 1));
-
-			if (u300_gpio_config[i][j].pin_usage != GPIO_IN)
-				val |= (U300_GPIO_PXPCR_PIN_MODE_OUTPUT_PUSH_PULL << (j << 1));
-			writel(val, virtbase + U300_GPIO_PXPCR +
-					 i * U300_GPIO_PORTX_SPACING);
-			local_irq_restore(flags);
-		}
-	}
-
-	/* Enable or disable the internal pull-ups in the GPIO ASIC block */
-	for (i = 0; i < U300_GPIO_MAX; i++) {
-		val = 0;
-		for (j = 0; j < 8; j++)
-			val |= (u32)((u300_gpio_config[i][j].pull_up == DISABLE_PULL_UP) << j);
-		local_irq_save(flags);
-		writel(val, virtbase + U300_GPIO_PXPER + i * U300_GPIO_PORTX_SPACING);
-		local_irq_restore(flags);
-	}
-#endif
-}
-
-static int __init gpio_probe(struct platform_device *pdev)
-{
-	u32 val;
-	int err = 0;
-	int i;
-	int num_irqs;
-
-	gpiodev = &pdev->dev;
-	memset(gpio_pin, 0, sizeof(gpio_pin));
-
-	/* Get GPIO clock */
-	clk = clk_get(&pdev->dev, NULL);
-	if (IS_ERR(clk)) {
-		err = PTR_ERR(clk);
-		dev_err(gpiodev, "could not get GPIO clock\n");
-		goto err_no_clk;
-	}
-	err = clk_enable(clk);
-	if (err) {
-		dev_err(gpiodev, "could not enable GPIO clock\n");
-		goto err_no_clk_enable;
-	}
-
-	memres = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!memres)
-		goto err_no_resource;
-
-	if (request_mem_region(memres->start, memres->end - memres->start, "GPIO Controller")
-	    == NULL) {
-		err = -ENODEV;
-		goto err_no_ioregion;
-	}
-
-	virtbase = ioremap(memres->start, resource_size(memres));
-	if (!virtbase) {
-		err = -ENOMEM;
-		goto err_no_ioremap;
-	}
-	dev_info(gpiodev, "remapped 0x%08x to %p\n",
-		 memres->start, virtbase);
-
-#ifdef U300_COH901335
-	dev_info(gpiodev, "initializing GPIO Controller COH 901 335\n");
-	/* Turn on the GPIO block */
-	writel(U300_GPIO_CR_BLOCK_CLOCK_ENABLE, virtbase + U300_GPIO_CR);
-#endif
-
-#ifdef U300_COH901571_3
-	dev_info(gpiodev, "initializing GPIO Controller COH 901 571/3\n");
-	val = readl(virtbase + U300_GPIO_CR);
-	dev_info(gpiodev, "COH901571/3 block version: %d, " \
-	       "number of cores: %d\n",
-	       ((val & 0x0000FE00) >> 9),
-	       ((val & 0x000001FC) >> 2));
-	writel(U300_GPIO_CR_BLOCK_CLKRQ_ENABLE, virtbase + U300_GPIO_CR);
-#endif
-
-	gpio_set_initial_values();
-
-	for (num_irqs = 0 ; num_irqs < U300_GPIO_NUM_PORTS; num_irqs++) {
-
-		gpio_ports[num_irqs].irq =
-			platform_get_irq_byname(pdev,
-						gpio_ports[num_irqs].name);
-
-		err = request_irq(gpio_ports[num_irqs].irq,
-				  gpio_irq_handler, IRQF_DISABLED,
-				  gpio_ports[num_irqs].name,
-				  &gpio_ports[num_irqs]);
-		if (err) {
-			dev_err(gpiodev, "cannot allocate IRQ for %s!\n",
-				gpio_ports[num_irqs].name);
-			goto err_no_irq;
-		}
-		/* Turns off PortX_irq_force */
-		writel(0x0, virtbase + U300_GPIO_PXIFR +
-				 num_irqs * U300_GPIO_PORTX_SPACING);
-	}
-
-	return 0;
-
- err_no_irq:
-	for (i = 0; i < num_irqs; i++)
-		free_irq(gpio_ports[i].irq, &gpio_ports[i]);
-	iounmap(virtbase);
- err_no_ioremap:
-	release_mem_region(memres->start, memres->end - memres->start);
- err_no_ioregion:
- err_no_resource:
-	clk_disable(clk);
- err_no_clk_enable:
-	clk_put(clk);
- err_no_clk:
-	dev_info(gpiodev, "module ERROR:%d\n", err);
-	return err;
-}
-
-static int __exit gpio_remove(struct platform_device *pdev)
-{
-	int i;
-
-	/* Turn off the GPIO block */
-	writel(0x00000000U, virtbase + U300_GPIO_CR);
-	for (i = 0 ; i < U300_GPIO_NUM_PORTS; i++)
-		free_irq(gpio_ports[i].irq, &gpio_ports[i]);
-	iounmap(virtbase);
-	release_mem_region(memres->start, memres->end - memres->start);
-	clk_disable(clk);
-	clk_put(clk);
-	return 0;
-}
-
-static struct platform_driver gpio_driver = {
-	.driver		= {
-		.name	= "u300-gpio",
-	},
-	.remove		= __exit_p(gpio_remove),
-};
-
-
-static int __init u300_gpio_init(void)
-{
-	return platform_driver_probe(&gpio_driver, gpio_probe);
-}
-
-static void __exit u300_gpio_exit(void)
-{
-	platform_driver_unregister(&gpio_driver);
-}
-
-arch_initcall(u300_gpio_init);
-module_exit(u300_gpio_exit);
-
-MODULE_AUTHOR("Linus Walleij <linus.walleij@stericsson.com>");
-
-#ifdef U300_COH901571_3
-MODULE_DESCRIPTION("ST-Ericsson AB COH 901 571/3 GPIO driver");
-#endif
-
-#ifdef U300_COH901335
-MODULE_DESCRIPTION("ST-Ericsson AB COH 901 335 GPIO driver");
-#endif
-
-MODULE_LICENSE("GPL");