gpio/samsung: gpio-samsung.c to support Samsung GPIOs

This patch adds support for Samsung GPIOs with one gpio driver
and removes old GPIO drivers which are drivers/gpio-s3c24xx.c,
gpio-s3c64xx.c, gpio-s5p64x0.c, gpio-s5pc100.c, gpio-s5pv210.c,
gpio-exynos4.c, gpio-plat-samsung.c, plat-samsung/gpio-config.c
and gpio.c to support each Samsung SoCs before. Because the
gpio-samsung.c can replace old Samsung GPIO drivers.
Basically, the gpio-samsung.c has been made by their merging
and removing duplicated definitions.

Note: gpio-samsung.c includes some SoC dependent codes and it
will be replaced next time.

Cc: Ben Dooks <ben-linux@fluff.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
[kgene.kim@samsung.com: squash the removing and adding patches]
[kgene.kim@samsung.com: fixes bug during to register of gpio_chips]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/plat-samsung/Makefile

@@ -15,8 +15,6 @@ obj-y				+= init.o
 obj-$(CONFIG_ARCH_USES_GETTIMEOFFSET)   += time.o
 obj-y				+= clock.o
 obj-y				+= pwm-clock.o
-obj-y				+= gpio.o
-obj-y				+= gpio-config.o
 obj-y				+= dev-asocdma.o
 
 obj-$(CONFIG_SAMSUNG_CLKSRC)	+= clock-clksrc.o

arch/arm/plat-samsung/gpio-config.c

-/* linux/arch/arm/plat-s3c/gpio-config.c
- *
- * Copyright 2008 Openmoko, Inc.
- * Copyright 2008-2010 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *	http://armlinux.simtec.co.uk/
- *
- * S3C series GPIO configuration core
- *
- * 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/module.h>
-#include <linux/gpio.h>
-#include <linux/io.h>
-
-#include <plat/gpio-core.h>
-#include <plat/gpio-cfg.h>
-#include <plat/gpio-cfg-helpers.h>
-
-int s3c_gpio_cfgpin(unsigned int pin, unsigned int config)
-{
-	struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin);
-	unsigned long flags;
-	int offset;
-	int ret;
-
-	if (!chip)
-		return -EINVAL;
-
-	offset = pin - chip->chip.base;
-
-	s3c_gpio_lock(chip, flags);
-	ret = s3c_gpio_do_setcfg(chip, offset, config);
-	s3c_gpio_unlock(chip, flags);
-
-	return ret;
-}
-EXPORT_SYMBOL(s3c_gpio_cfgpin);
-
-int s3c_gpio_cfgpin_range(unsigned int start, unsigned int nr,
-			  unsigned int cfg)
-{
-	int ret;
-
-	for (; nr > 0; nr--, start++) {
-		ret = s3c_gpio_cfgpin(start, cfg);
-		if (ret != 0)
-			return ret;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(s3c_gpio_cfgpin_range);
-
-int s3c_gpio_cfgall_range(unsigned int start, unsigned int nr,
-			  unsigned int cfg, s3c_gpio_pull_t pull)
-{
-	int ret;
-
-	for (; nr > 0; nr--, start++) {
-		s3c_gpio_setpull(start, pull);
-		ret = s3c_gpio_cfgpin(start, cfg);
-		if (ret != 0)
-			return ret;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(s3c_gpio_cfgall_range);
-
-unsigned s3c_gpio_getcfg(unsigned int pin)
-{
-	struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin);
-	unsigned long flags;
-	unsigned ret = 0;
-	int offset;
-
-	if (chip) {
-		offset = pin - chip->chip.base;
-
-		s3c_gpio_lock(chip, flags);
-		ret = s3c_gpio_do_getcfg(chip, offset);
-		s3c_gpio_unlock(chip, flags);
-	}
-
-	return ret;
-}
-EXPORT_SYMBOL(s3c_gpio_getcfg);
-
-
-int s3c_gpio_setpull(unsigned int pin, s3c_gpio_pull_t pull)
-{
-	struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin);
-	unsigned long flags;
-	int offset, ret;
-
-	if (!chip)
-		return -EINVAL;
-
-	offset = pin - chip->chip.base;
-
-	s3c_gpio_lock(chip, flags);
-	ret = s3c_gpio_do_setpull(chip, offset, pull);
-	s3c_gpio_unlock(chip, flags);
-
-	return ret;
-}
-EXPORT_SYMBOL(s3c_gpio_setpull);
-
-s3c_gpio_pull_t s3c_gpio_getpull(unsigned int pin)
-{
-	struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin);
-	unsigned long flags;
-	int offset;
-	u32 pup = 0;
-
-	if (chip) {
-		offset = pin - chip->chip.base;
-
-		s3c_gpio_lock(chip, flags);
-		pup = s3c_gpio_do_getpull(chip, offset);
-		s3c_gpio_unlock(chip, flags);
-	}
-
-	return (__force s3c_gpio_pull_t)pup;
-}
-EXPORT_SYMBOL(s3c_gpio_getpull);
-
-#ifdef CONFIG_S3C_GPIO_CFG_S3C24XX
-int s3c_gpio_setcfg_s3c24xx_a(struct s3c_gpio_chip *chip,
-			      unsigned int off, unsigned int cfg)
-{
-	void __iomem *reg = chip->base;
-	unsigned int shift = off;
-	u32 con;
-
-	if (s3c_gpio_is_cfg_special(cfg)) {
-		cfg &= 0xf;
-
-		/* Map output to 0, and SFN2 to 1 */
-		cfg -= 1;
-		if (cfg > 1)
-			return -EINVAL;
-
-		cfg <<= shift;
-	}
-
-	con = __raw_readl(reg);
-	con &= ~(0x1 << shift);
-	con |= cfg;
-	__raw_writel(con, reg);
-
-	return 0;
-}
-
-unsigned s3c_gpio_getcfg_s3c24xx_a(struct s3c_gpio_chip *chip,
-				   unsigned int off)
-{
-	u32 con;
-
-	con = __raw_readl(chip->base);
-	con >>= off;
-	con &= 1;
-	con++;
-
-	return S3C_GPIO_SFN(con);
-}
-
-int s3c_gpio_setcfg_s3c24xx(struct s3c_gpio_chip *chip,
-			    unsigned int off, unsigned int cfg)
-{
-	void __iomem *reg = chip->base;
-	unsigned int shift = off * 2;
-	u32 con;
-
-	if (s3c_gpio_is_cfg_special(cfg)) {
-		cfg &= 0xf;
-		if (cfg > 3)
-			return -EINVAL;
-
-		cfg <<= shift;
-	}
-
-	con = __raw_readl(reg);
-	con &= ~(0x3 << shift);
-	con |= cfg;
-	__raw_writel(con, reg);
-
-	return 0;
-}
-
-unsigned int s3c_gpio_getcfg_s3c24xx(struct s3c_gpio_chip *chip,
-				     unsigned int off)
-{
-	u32 con;
-
-	con = __raw_readl(chip->base);
-	con >>= off * 2;
-	con &= 3;
-
-	/* this conversion works for IN and OUT as well as special mode */
-	return S3C_GPIO_SPECIAL(con);
-}
-#endif
-
-#ifdef CONFIG_S3C_GPIO_CFG_S3C64XX
-int s3c_gpio_setcfg_s3c64xx_4bit(struct s3c_gpio_chip *chip,
-				 unsigned int off, unsigned int cfg)
-{
-	void __iomem *reg = chip->base;
-	unsigned int shift = (off & 7) * 4;
-	u32 con;
-
-	if (off < 8 && chip->chip.ngpio > 8)
-		reg -= 4;
-
-	if (s3c_gpio_is_cfg_special(cfg)) {
-		cfg &= 0xf;
-		cfg <<= shift;
-	}
-
-	con = __raw_readl(reg);
-	con &= ~(0xf << shift);
-	con |= cfg;
-	__raw_writel(con, reg);
-
-	return 0;
-}
-
-unsigned s3c_gpio_getcfg_s3c64xx_4bit(struct s3c_gpio_chip *chip,
-				      unsigned int off)
-{
-	void __iomem *reg = chip->base;
-	unsigned int shift = (off & 7) * 4;
-	u32 con;
-
-	if (off < 8 && chip->chip.ngpio > 8)
-		reg -= 4;
-
-	con = __raw_readl(reg);
-	con >>= shift;
-	con &= 0xf;
-
-	/* this conversion works for IN and OUT as well as special mode */
-	return S3C_GPIO_SPECIAL(con);
-}
-
-#endif /* CONFIG_S3C_GPIO_CFG_S3C64XX */
-
-#ifdef CONFIG_S3C_GPIO_PULL_UPDOWN
-int s3c_gpio_setpull_updown(struct s3c_gpio_chip *chip,
-			    unsigned int off, s3c_gpio_pull_t pull)
-{
-	void __iomem *reg = chip->base + 0x08;
-	int shift = off * 2;
-	u32 pup;
-
-	pup = __raw_readl(reg);
-	pup &= ~(3 << shift);
-	pup |= pull << shift;
-	__raw_writel(pup, reg);
-
-	return 0;
-}
-
-s3c_gpio_pull_t s3c_gpio_getpull_updown(struct s3c_gpio_chip *chip,
-					unsigned int off)
-{
-	void __iomem *reg = chip->base + 0x08;
-	int shift = off * 2;
-	u32 pup = __raw_readl(reg);
-
-	pup >>= shift;
-	pup &= 0x3;
-	return (__force s3c_gpio_pull_t)pup;
-}
-
-#ifdef CONFIG_S3C_GPIO_PULL_S3C2443
-int s3c_gpio_setpull_s3c2443(struct s3c_gpio_chip *chip,
-				unsigned int off, s3c_gpio_pull_t pull)
-{
-	switch (pull) {
-	case S3C_GPIO_PULL_NONE:
-		pull = 0x01;
-		break;
-	case S3C_GPIO_PULL_UP:
-		pull = 0x00;
-		break;
-	case S3C_GPIO_PULL_DOWN:
-		pull = 0x02;
-		break;
-	}
-	return s3c_gpio_setpull_updown(chip, off, pull);
-}
-
-s3c_gpio_pull_t s3c_gpio_getpull_s3c2443(struct s3c_gpio_chip *chip,
-					unsigned int off)
-{
-	s3c_gpio_pull_t pull;
-
-	pull = s3c_gpio_getpull_updown(chip, off);
-
-	switch (pull) {
-	case 0x00:
-		pull = S3C_GPIO_PULL_UP;
-		break;
-	case 0x01:
-	case 0x03:
-		pull = S3C_GPIO_PULL_NONE;
-		break;
-	case 0x02:
-		pull = S3C_GPIO_PULL_DOWN;
-		break;
-	}
-
-	return pull;
-}
-#endif
-#endif
-
-#if defined(CONFIG_S3C_GPIO_PULL_UP) || defined(CONFIG_S3C_GPIO_PULL_DOWN)
-static int s3c_gpio_setpull_1(struct s3c_gpio_chip *chip,
-			 unsigned int off, s3c_gpio_pull_t pull,
-			 s3c_gpio_pull_t updown)
-{
-	void __iomem *reg = chip->base + 0x08;
-	u32 pup = __raw_readl(reg);
-
-	if (pull == updown)
-		pup &= ~(1 << off);
-	else if (pull == S3C_GPIO_PULL_NONE)
-		pup |= (1 << off);
-	else
-		return -EINVAL;
-
-	__raw_writel(pup, reg);
-	return 0;
-}
-
-static s3c_gpio_pull_t s3c_gpio_getpull_1(struct s3c_gpio_chip *chip,
-				     unsigned int off, s3c_gpio_pull_t updown)
-{
-	void __iomem *reg = chip->base + 0x08;
-	u32 pup = __raw_readl(reg);
-
-	pup &= (1 << off);
-	return pup ? S3C_GPIO_PULL_NONE : updown;
-}
-#endif /* CONFIG_S3C_GPIO_PULL_UP || CONFIG_S3C_GPIO_PULL_DOWN */
-
-#ifdef CONFIG_S3C_GPIO_PULL_UP
-s3c_gpio_pull_t s3c_gpio_getpull_1up(struct s3c_gpio_chip *chip,
-				     unsigned int off)
-{
-	return s3c_gpio_getpull_1(chip, off, S3C_GPIO_PULL_UP);
-}
-
-int s3c_gpio_setpull_1up(struct s3c_gpio_chip *chip,
-			 unsigned int off, s3c_gpio_pull_t pull)
-{
-	return s3c_gpio_setpull_1(chip, off, pull, S3C_GPIO_PULL_UP);
-}
-#endif /* CONFIG_S3C_GPIO_PULL_UP */
-
-#ifdef CONFIG_S3C_GPIO_PULL_DOWN
-s3c_gpio_pull_t s3c_gpio_getpull_1down(struct s3c_gpio_chip *chip,
-				     unsigned int off)
-{
-	return s3c_gpio_getpull_1(chip, off, S3C_GPIO_PULL_DOWN);
-}
-
-int s3c_gpio_setpull_1down(struct s3c_gpio_chip *chip,
-			 unsigned int off, s3c_gpio_pull_t pull)
-{
-	return s3c_gpio_setpull_1(chip, off, pull, S3C_GPIO_PULL_DOWN);
-}
-#endif /* CONFIG_S3C_GPIO_PULL_DOWN */
-
-#ifdef CONFIG_S5P_GPIO_DRVSTR
-s5p_gpio_drvstr_t s5p_gpio_get_drvstr(unsigned int pin)
-{
-	struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin);
-	unsigned int off;
-	void __iomem *reg;
-	int shift;
-	u32 drvstr;
-
-	if (!chip)
-		return -EINVAL;
-
-	off = pin - chip->chip.base;
-	shift = off * 2;
-	reg = chip->base + 0x0C;
-
-	drvstr = __raw_readl(reg);
-	drvstr = drvstr >> shift;
-	drvstr &= 0x3;
-
-	return (__force s5p_gpio_drvstr_t)drvstr;
-}
-EXPORT_SYMBOL(s5p_gpio_get_drvstr);
-
-int s5p_gpio_set_drvstr(unsigned int pin, s5p_gpio_drvstr_t drvstr)
-{
-	struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin);
-	unsigned int off;
-	void __iomem *reg;
-	int shift;
-	u32 tmp;
-
-	if (!chip)
-		return -EINVAL;
-
-	off = pin - chip->chip.base;
-	shift = off * 2;
-	reg = chip->base + 0x0C;
-
-	tmp = __raw_readl(reg);
-	tmp &= ~(0x3 << shift);
-	tmp |= drvstr << shift;
-
-	__raw_writel(tmp, reg);
-
-	return 0;
-}
-EXPORT_SYMBOL(s5p_gpio_set_drvstr);
-#endif	/* CONFIG_S5P_GPIO_DRVSTR */

arch/arm/plat-samsung/gpio.c

-/* linux/arch/arm/plat-s3c/gpio.c
- *
- * Copyright 2008 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *	http://armlinux.simtec.co.uk/
- *
- * S3C series GPIO core
- *
- * 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/io.h>
-#include <linux/gpio.h>
-#include <linux/spinlock.h>
-
-#include <plat/gpio-core.h>
-
-#ifdef CONFIG_S3C_GPIO_TRACK
-struct s3c_gpio_chip *s3c_gpios[S3C_GPIO_END];
-
-static __init void s3c_gpiolib_track(struct s3c_gpio_chip *chip)
-{
-	unsigned int gpn;
-	int i;
-
-	gpn = chip->chip.base;
-	for (i = 0; i < chip->chip.ngpio; i++, gpn++) {
-		BUG_ON(gpn >= ARRAY_SIZE(s3c_gpios));
-		s3c_gpios[gpn] = chip;
-	}
-}
-#endif /* CONFIG_S3C_GPIO_TRACK */
-
-/* Default routines for controlling GPIO, based on the original S3C24XX
- * GPIO functions which deal with the case where each gpio bank of the
- * chip is as following:
- *
- * base + 0x00: Control register, 2 bits per gpio
- *	        gpio n: 2 bits starting at (2*n)
- *		00 = input, 01 = output, others mean special-function
- * base + 0x04: Data register, 1 bit per gpio
- *		bit n: data bit n
-*/
-
-static int s3c_gpiolib_input(struct gpio_chip *chip, unsigned offset)
-{
-	struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip);
-	void __iomem *base = ourchip->base;
-	unsigned long flags;
-	unsigned long con;
-
-	s3c_gpio_lock(ourchip, flags);
-
-	con = __raw_readl(base + 0x00);
-	con &= ~(3 << (offset * 2));
-
-	__raw_writel(con, base + 0x00);
-
-	s3c_gpio_unlock(ourchip, flags);
-	return 0;
-}
-
-static int s3c_gpiolib_output(struct gpio_chip *chip,
-			      unsigned offset, int value)
-{
-	struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip);
-	void __iomem *base = ourchip->base;
-	unsigned long flags;
-	unsigned long dat;
-	unsigned long con;
-
-	s3c_gpio_lock(ourchip, flags);
-
-	dat = __raw_readl(base + 0x04);
-	dat &= ~(1 << offset);
-	if (value)
-		dat |= 1 << offset;
-	__raw_writel(dat, base + 0x04);
-
-	con = __raw_readl(base + 0x00);
-	con &= ~(3 << (offset * 2));
-	con |= 1 << (offset * 2);
-
-	__raw_writel(con, base + 0x00);
-	__raw_writel(dat, base + 0x04);
-
-	s3c_gpio_unlock(ourchip, flags);
-	return 0;
-}
-
-static void s3c_gpiolib_set(struct gpio_chip *chip,
-			    unsigned offset, int value)
-{
-	struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip);
-	void __iomem *base = ourchip->base;
-	unsigned long flags;
-	unsigned long dat;
-
-	s3c_gpio_lock(ourchip, flags);
-
-	dat = __raw_readl(base + 0x04);
-	dat &= ~(1 << offset);
-	if (value)
-		dat |= 1 << offset;
-	__raw_writel(dat, base + 0x04);
-
-	s3c_gpio_unlock(ourchip, flags);
-}
-
-static int s3c_gpiolib_get(struct gpio_chip *chip, unsigned offset)
-{
-	struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip);
-	unsigned long val;
-
-	val = __raw_readl(ourchip->base + 0x04);
-	val >>= offset;
-	val &= 1;
-
-	return val;
-}
-
-__init void s3c_gpiolib_add(struct s3c_gpio_chip *chip)
-{
-	struct gpio_chip *gc = &chip->chip;
-	int ret;
-
-	BUG_ON(!chip->base);
-	BUG_ON(!gc->label);
-	BUG_ON(!gc->ngpio);
-
-	spin_lock_init(&chip->lock);
-
-	if (!gc->direction_input)
-		gc->direction_input = s3c_gpiolib_input;
-	if (!gc->direction_output)
-		gc->direction_output = s3c_gpiolib_output;
-	if (!gc->set)
-		gc->set = s3c_gpiolib_set;
-	if (!gc->get)
-		gc->get = s3c_gpiolib_get;
-
-#ifdef CONFIG_PM
-	if (chip->pm != NULL) {
-		if (!chip->pm->save || !chip->pm->resume)
-			printk(KERN_ERR "gpio: %s has missing PM functions\n",
-			       gc->label);
-	} else
-		printk(KERN_ERR "gpio: %s has no PM function\n", gc->label);
-#endif
-
-	/* gpiochip_add() prints own failure message on error. */
-	ret = gpiochip_add(gc);
-	if (ret >= 0)
-		s3c_gpiolib_track(chip);
-}
-
-int samsung_gpiolib_to_irq(struct gpio_chip *chip, unsigned int offset)
-{
-	struct s3c_gpio_chip *s3c_chip = container_of(chip,
-			struct s3c_gpio_chip, chip);
-
-	return s3c_chip->irq_base + offset;
-}

drivers/gpio/Kconfig

@@ -95,10 +95,6 @@ config GPIO_EP93XX
 	depends on ARCH_EP93XX
 	select GPIO_GENERIC
 
-config GPIO_EXYNOS4
-	def_bool y
-	depends on CPU_EXYNOS4210
-
 config GPIO_MPC5200
 	def_bool y
 	depends on PPC_MPC52xx
@@ -131,30 +127,6 @@ config GPIO_MXS
 	select GPIO_GENERIC
 	select GENERIC_IRQ_CHIP
 
-config GPIO_PLAT_SAMSUNG
-	def_bool y
-	depends on SAMSUNG_GPIOLIB_4BIT
-
-config GPIO_S3C24XX
-	def_bool y
-	depends on PLAT_S3C24XX
-
-config GPIO_S3C64XX
-	def_bool y
-	depends on ARCH_S3C64XX
-
-config GPIO_S5P64X0
-	def_bool y
-	depends on ARCH_S5P64X0
-
-config GPIO_S5PC100
-	def_bool y
-	depends on CPU_S5PC100
-
-config GPIO_S5PV210
-	def_bool y
-	depends on CPU_S5PV210
-
 config GPIO_PL061
 	bool "PrimeCell PL061 GPIO support"
 	depends on ARM_AMBA

drivers/gpio/Makefile

@@ -15,7 +15,6 @@ obj-$(CONFIG_GPIO_BT8XX)	+= gpio-bt8xx.o
 obj-$(CONFIG_GPIO_CS5535)	+= gpio-cs5535.o
 obj-$(CONFIG_GPIO_DA9052)	+= gpio-da9052.o
 obj-$(CONFIG_GPIO_EP93XX)	+= gpio-ep93xx.o
-obj-$(CONFIG_GPIO_EXYNOS4)	+= gpio-exynos4.o
 obj-$(CONFIG_GPIO_IT8761E)	+= gpio-it8761e.o
 obj-$(CONFIG_GPIO_JANZ_TTL)	+= gpio-janz-ttl.o
 obj-$(CONFIG_GPIO_LANGWELL)	+= gpio-langwell.o
@@ -38,14 +37,7 @@ obj-$(CONFIG_GPIO_PCF857X)	+= gpio-pcf857x.o
 obj-$(CONFIG_GPIO_PCH)		+= gpio-pch.o
 obj-$(CONFIG_GPIO_PL061)	+= gpio-pl061.o
 obj-$(CONFIG_GPIO_RDC321X)	+= gpio-rdc321x.o
-
-obj-$(CONFIG_GPIO_PLAT_SAMSUNG)	+= gpio-plat-samsung.o
-obj-$(CONFIG_GPIO_S3C24XX)	+= gpio-s3c24xx.o
-obj-$(CONFIG_GPIO_S3C64XX)	+= gpio-s3c64xx.o
-obj-$(CONFIG_GPIO_S5P64X0)	+= gpio-s5p64x0.o
-obj-$(CONFIG_GPIO_S5PC100)	+= gpio-s5pc100.o
-obj-$(CONFIG_GPIO_S5PV210)	+= gpio-s5pv210.o
-
+obj-$(CONFIG_PLAT_SAMSUNG)	+= gpio-samsung.o
 obj-$(CONFIG_GPIO_SCH)		+= gpio-sch.o
 obj-$(CONFIG_GPIO_STMPE)	+= gpio-stmpe.o
 obj-$(CONFIG_GPIO_SX150X)	+= gpio-sx150x.o

drivers/gpio/gpio-exynos4.c

-/*
- * EXYNOS4 - GPIOlib support
- *
- * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
- *		http://www.samsung.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/irq.h>
-#include <linux/io.h>
-#include <linux/gpio.h>
-
-#include <mach/map.h>
-
-#include <plat/gpio-core.h>
-#include <plat/gpio-cfg.h>
-#include <plat/gpio-cfg-helpers.h>
-
-int s3c_gpio_setpull_exynos4(struct s3c_gpio_chip *chip,
-				unsigned int off, s3c_gpio_pull_t pull)
-{
-	if (pull == S3C_GPIO_PULL_UP)
-		pull = 3;
-
-	return s3c_gpio_setpull_updown(chip, off, pull);
-}
-
-s3c_gpio_pull_t s3c_gpio_getpull_exynos4(struct s3c_gpio_chip *chip,
-						unsigned int off)
-{
-	s3c_gpio_pull_t pull;
-
-	pull = s3c_gpio_getpull_updown(chip, off);
-	if (pull == 3)
-		pull = S3C_GPIO_PULL_UP;
-
-	return pull;
-}
-
-static struct s3c_gpio_cfg gpio_cfg = {
-	.set_config	= s3c_gpio_setcfg_s3c64xx_4bit,
-	.set_pull	= s3c_gpio_setpull_exynos4,
-	.get_pull	= s3c_gpio_getpull_exynos4,
-};
-
-static struct s3c_gpio_cfg gpio_cfg_noint = {
-	.set_config	= s3c_gpio_setcfg_s3c64xx_4bit,
-	.set_pull	= s3c_gpio_setpull_exynos4,
-	.get_pull	= s3c_gpio_getpull_exynos4,
-};
-
-/*
- * Following are the gpio banks in v310.
- *
- * The 'config' member when left to NULL, is initialized to the default
- * structure gpio_cfg in the init function below.
- *
- * The 'base' member is also initialized in the init function below.
- * Note: The initialization of 'base' member of s3c_gpio_chip structure
- * uses the above macro and depends on the banks being listed in order here.
- */
-static struct s3c_gpio_chip exynos4_gpio_part1_4bit[] = {
-	{
-		.chip	= {
-			.base	= EXYNOS4_GPA0(0),
-			.ngpio	= EXYNOS4_GPIO_A0_NR,
-			.label	= "GPA0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPA1(0),
-			.ngpio	= EXYNOS4_GPIO_A1_NR,
-			.label	= "GPA1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPB(0),
-			.ngpio	= EXYNOS4_GPIO_B_NR,
-			.label	= "GPB",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPC0(0),
-			.ngpio	= EXYNOS4_GPIO_C0_NR,
-			.label	= "GPC0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPC1(0),
-			.ngpio	= EXYNOS4_GPIO_C1_NR,
-			.label	= "GPC1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPD0(0),
-			.ngpio	= EXYNOS4_GPIO_D0_NR,
-			.label	= "GPD0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPD1(0),
-			.ngpio	= EXYNOS4_GPIO_D1_NR,
-			.label	= "GPD1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPE0(0),
-			.ngpio	= EXYNOS4_GPIO_E0_NR,
-			.label	= "GPE0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPE1(0),
-			.ngpio	= EXYNOS4_GPIO_E1_NR,
-			.label	= "GPE1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPE2(0),
-			.ngpio	= EXYNOS4_GPIO_E2_NR,
-			.label	= "GPE2",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPE3(0),
-			.ngpio	= EXYNOS4_GPIO_E3_NR,
-			.label	= "GPE3",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPE4(0),
-			.ngpio	= EXYNOS4_GPIO_E4_NR,
-			.label	= "GPE4",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPF0(0),
-			.ngpio	= EXYNOS4_GPIO_F0_NR,
-			.label	= "GPF0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPF1(0),
-			.ngpio	= EXYNOS4_GPIO_F1_NR,
-			.label	= "GPF1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPF2(0),
-			.ngpio	= EXYNOS4_GPIO_F2_NR,
-			.label	= "GPF2",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPF3(0),
-			.ngpio	= EXYNOS4_GPIO_F3_NR,
-			.label	= "GPF3",
-		},
-	},
-};
-
-static struct s3c_gpio_chip exynos4_gpio_part2_4bit[] = {
-	{
-		.chip	= {
-			.base	= EXYNOS4_GPJ0(0),
-			.ngpio	= EXYNOS4_GPIO_J0_NR,
-			.label	= "GPJ0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPJ1(0),
-			.ngpio	= EXYNOS4_GPIO_J1_NR,
-			.label	= "GPJ1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPK0(0),
-			.ngpio	= EXYNOS4_GPIO_K0_NR,
-			.label	= "GPK0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPK1(0),
-			.ngpio	= EXYNOS4_GPIO_K1_NR,
-			.label	= "GPK1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPK2(0),
-			.ngpio	= EXYNOS4_GPIO_K2_NR,
-			.label	= "GPK2",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPK3(0),
-			.ngpio	= EXYNOS4_GPIO_K3_NR,
-			.label	= "GPK3",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPL0(0),
-			.ngpio	= EXYNOS4_GPIO_L0_NR,
-			.label	= "GPL0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPL1(0),
-			.ngpio	= EXYNOS4_GPIO_L1_NR,
-			.label	= "GPL1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPL2(0),
-			.ngpio	= EXYNOS4_GPIO_L2_NR,
-			.label	= "GPL2",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= EXYNOS4_GPY0(0),
-			.ngpio	= EXYNOS4_GPIO_Y0_NR,
-			.label	= "GPY0",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= EXYNOS4_GPY1(0),
-			.ngpio	= EXYNOS4_GPIO_Y1_NR,
-			.label	= "GPY1",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= EXYNOS4_GPY2(0),
-			.ngpio	= EXYNOS4_GPIO_Y2_NR,
-			.label	= "GPY2",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= EXYNOS4_GPY3(0),
-			.ngpio	= EXYNOS4_GPIO_Y3_NR,
-			.label	= "GPY3",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= EXYNOS4_GPY4(0),
-			.ngpio	= EXYNOS4_GPIO_Y4_NR,
-			.label	= "GPY4",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= EXYNOS4_GPY5(0),
-			.ngpio	= EXYNOS4_GPIO_Y5_NR,
-			.label	= "GPY5",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= EXYNOS4_GPY6(0),
-			.ngpio	= EXYNOS4_GPIO_Y6_NR,
-			.label	= "GPY6",
-		},
-	}, {
-		.base	= (S5P_VA_GPIO2 + 0xC00),
-		.config	= &gpio_cfg_noint,
-		.irq_base = IRQ_EINT(0),
-		.chip	= {
-			.base	= EXYNOS4_GPX0(0),
-			.ngpio	= EXYNOS4_GPIO_X0_NR,
-			.label	= "GPX0",
-			.to_irq	= samsung_gpiolib_to_irq,
-		},
-	}, {
-		.base	= (S5P_VA_GPIO2 + 0xC20),
-		.config	= &gpio_cfg_noint,
-		.irq_base = IRQ_EINT(8),
-		.chip	= {
-			.base	= EXYNOS4_GPX1(0),
-			.ngpio	= EXYNOS4_GPIO_X1_NR,
-			.label	= "GPX1",
-			.to_irq	= samsung_gpiolib_to_irq,
-		},
-	}, {
-		.base	= (S5P_VA_GPIO2 + 0xC40),
-		.config	= &gpio_cfg_noint,
-		.irq_base = IRQ_EINT(16),
-		.chip	= {
-			.base	= EXYNOS4_GPX2(0),
-			.ngpio	= EXYNOS4_GPIO_X2_NR,
-			.label	= "GPX2",
-			.to_irq	= samsung_gpiolib_to_irq,
-		},
-	}, {
-		.base	= (S5P_VA_GPIO2 + 0xC60),
-		.config	= &gpio_cfg_noint,
-		.irq_base = IRQ_EINT(24),
-		.chip	= {
-			.base	= EXYNOS4_GPX3(0),
-			.ngpio	= EXYNOS4_GPIO_X3_NR,
-			.label	= "GPX3",
-			.to_irq	= samsung_gpiolib_to_irq,
-		},
-	},
-};
-
-static struct s3c_gpio_chip exynos4_gpio_part3_4bit[] = {
-	{
-		.chip	= {
-			.base	= EXYNOS4_GPZ(0),
-			.ngpio	= EXYNOS4_GPIO_Z_NR,
-			.label	= "GPZ",
-		},
-	},
-};
-
-static __init int exynos4_gpiolib_init(void)
-{
-	struct s3c_gpio_chip *chip;
-	int i;
-	int group = 0;
-	int nr_chips;
-
-	/* GPIO part 1 */
-
-	chip = exynos4_gpio_part1_4bit;
-	nr_chips = ARRAY_SIZE(exynos4_gpio_part1_4bit);
-
-	for (i = 0; i < nr_chips; i++, chip++) {
-		if (chip->config == NULL) {
-			chip->config = &gpio_cfg;
-			/* Assign the GPIO interrupt group */
-			chip->group = group++;
-		}
-		if (chip->base == NULL)
-			chip->base = S5P_VA_GPIO1 + (i) * 0x20;
-	}
-
-	samsung_gpiolib_add_4bit_chips(exynos4_gpio_part1_4bit, nr_chips);
-
-	/* GPIO part 2 */
-
-	chip = exynos4_gpio_part2_4bit;
-	nr_chips = ARRAY_SIZE(exynos4_gpio_part2_4bit);
-
-	for (i = 0; i < nr_chips; i++, chip++) {
-		if (chip->config == NULL) {
-			chip->config = &gpio_cfg;
-			/* Assign the GPIO interrupt group */
-			chip->group = group++;
-		}
-		if (chip->base == NULL)
-			chip->base = S5P_VA_GPIO2 + (i) * 0x20;
-	}
-
-	samsung_gpiolib_add_4bit_chips(exynos4_gpio_part2_4bit, nr_chips);
-
-	/* GPIO part 3 */
-
-	chip = exynos4_gpio_part3_4bit;
-	nr_chips = ARRAY_SIZE(exynos4_gpio_part3_4bit);
-
-	for (i = 0; i < nr_chips; i++, chip++) {
-		if (chip->config == NULL) {
-			chip->config = &gpio_cfg;
-			/* Assign the GPIO interrupt group */
-			chip->group = group++;
-		}
-		if (chip->base == NULL)
-			chip->base = S5P_VA_GPIO3 + (i) * 0x20;
-	}
-
-	samsung_gpiolib_add_4bit_chips(exynos4_gpio_part3_4bit, nr_chips);
-	s5p_register_gpioint_bank(IRQ_GPIO_XA, 0, IRQ_GPIO1_NR_GROUPS);
-	s5p_register_gpioint_bank(IRQ_GPIO_XB, IRQ_GPIO1_NR_GROUPS, IRQ_GPIO2_NR_GROUPS);
-
-	return 0;
-}
-core_initcall(exynos4_gpiolib_init);

drivers/gpio/gpio-plat-samsung.c

-/*
- * Copyright 2008 Openmoko, Inc.
- * Copyright 2008 Simtec Electronics
- *      Ben Dooks <ben@simtec.co.uk>
- *      http://armlinux.simtec.co.uk/
- *
- * Copyright (c) 2009 Samsung Electronics Co., Ltd.
- *		http://www.samsung.com/
- *
- * SAMSUNG - GPIOlib support
- *
- * 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/irq.h>
-#include <linux/io.h>
-#include <linux/gpio.h>
-#include <plat/gpio-core.h>
-#include <plat/gpio-cfg.h>
-#include <plat/gpio-cfg-helpers.h>
-
-#ifndef DEBUG_GPIO
-#define gpio_dbg(x...) do { } while (0)
-#else
-#define gpio_dbg(x...) printk(KERN_DEBUG x)
-#endif
-
-/* The samsung_gpiolib_4bit routines are to control the gpio banks where
- * the gpio configuration register (GPxCON) has 4 bits per GPIO, as the
- * following example:
- *
- * base + 0x00: Control register, 4 bits per gpio
- *		gpio n: 4 bits starting at (4*n)
- *		0000 = input, 0001 = output, others mean special-function
- * base + 0x04: Data register, 1 bit per gpio
- *		bit n: data bit n
- *
- * Note, since the data register is one bit per gpio and is at base + 0x4
- * we can use s3c_gpiolib_get and s3c_gpiolib_set to change the state of
- * the output.
-*/
-
-static int samsung_gpiolib_4bit_input(struct gpio_chip *chip,
-				      unsigned int offset)
-{
-	struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip);
-	void __iomem *base = ourchip->base;
-	unsigned long con;
-
-	con = __raw_readl(base + GPIOCON_OFF);
-	con &= ~(0xf << con_4bit_shift(offset));
-	__raw_writel(con, base + GPIOCON_OFF);
-
-	gpio_dbg("%s: %p: CON now %08lx\n", __func__, base, con);
-
-	return 0;
-}
-
-static int samsung_gpiolib_4bit_output(struct gpio_chip *chip,
-				       unsigned int offset, int value)
-{
-	struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip);
-	void __iomem *base = ourchip->base;
-	unsigned long con;
-	unsigned long dat;
-
-	con = __raw_readl(base + GPIOCON_OFF);
-	con &= ~(0xf << con_4bit_shift(offset));
-	con |= 0x1 << con_4bit_shift(offset);
-
-	dat = __raw_readl(base + GPIODAT_OFF);
-
-	if (value)
-		dat |= 1 << offset;
-	else
-		dat &= ~(1 << offset);
-
-	__raw_writel(dat, base + GPIODAT_OFF);
-	__raw_writel(con, base + GPIOCON_OFF);
-	__raw_writel(dat, base + GPIODAT_OFF);
-
-	gpio_dbg("%s: %p: CON %08lx, DAT %08lx\n", __func__, base, con, dat);
-
-	return 0;
-}
-
-/* The next set of routines are for the case where the GPIO configuration
- * registers are 4 bits per GPIO but there is more than one register (the
- * bank has more than 8 GPIOs.
- *
- * This case is the similar to the 4 bit case, but the registers are as
- * follows:
- *
- * base + 0x00: Control register, 4 bits per gpio (lower 8 GPIOs)
- *		gpio n: 4 bits starting at (4*n)
- *		0000 = input, 0001 = output, others mean special-function
- * base + 0x04: Control register, 4 bits per gpio (up to 8 additions GPIOs)
- *		gpio n: 4 bits starting at (4*n)
- *		0000 = input, 0001 = output, others mean special-function
- * base + 0x08: Data register, 1 bit per gpio
- *		bit n: data bit n
- *
- * To allow us to use the s3c_gpiolib_get and s3c_gpiolib_set routines we
- * store the 'base + 0x4' address so that these routines see the data
- * register at ourchip->base + 0x04.
- */
-
-static int samsung_gpiolib_4bit2_input(struct gpio_chip *chip,
-				       unsigned int offset)
-{
-	struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip);
-	void __iomem *base = ourchip->base;
-	void __iomem *regcon = base;
-	unsigned long con;
-
-	if (offset > 7)
-		offset -= 8;
-	else
-		regcon -= 4;
-
-	con = __raw_readl(regcon);
-	con &= ~(0xf << con_4bit_shift(offset));
-	__raw_writel(con, regcon);
-
-	gpio_dbg("%s: %p: CON %08lx\n", __func__, base, con);
-
-	return 0;
-}
-
-static int samsung_gpiolib_4bit2_output(struct gpio_chip *chip,
-					unsigned int offset, int value)
-{
-	struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip);
-	void __iomem *base = ourchip->base;
-	void __iomem *regcon = base;
-	unsigned long con;
-	unsigned long dat;
-	unsigned con_offset = offset;
-
-	if (con_offset > 7)
-		con_offset -= 8;
-	else
-		regcon -= 4;
-
-	con = __raw_readl(regcon);
-	con &= ~(0xf << con_4bit_shift(con_offset));
-	con |= 0x1 << con_4bit_shift(con_offset);
-
-	dat = __raw_readl(base + GPIODAT_OFF);
-
-	if (value)
-		dat |= 1 << offset;
-	else
-		dat &= ~(1 << offset);
-
-	__raw_writel(dat, base + GPIODAT_OFF);
-	__raw_writel(con, regcon);
-	__raw_writel(dat, base + GPIODAT_OFF);
-
-	gpio_dbg("%s: %p: CON %08lx, DAT %08lx\n", __func__, base, con, dat);
-
-	return 0;
-}
-
-void __init samsung_gpiolib_add_4bit(struct s3c_gpio_chip *chip)
-{
-	chip->chip.direction_input = samsung_gpiolib_4bit_input;
-	chip->chip.direction_output = samsung_gpiolib_4bit_output;
-	chip->pm = __gpio_pm(&s3c_gpio_pm_4bit);
-}
-
-void __init samsung_gpiolib_add_4bit2(struct s3c_gpio_chip *chip)
-{
-	chip->chip.direction_input = samsung_gpiolib_4bit2_input;
-	chip->chip.direction_output = samsung_gpiolib_4bit2_output;
-	chip->pm = __gpio_pm(&s3c_gpio_pm_4bit);
-}
-
-void __init samsung_gpiolib_add_4bit_chips(struct s3c_gpio_chip *chip,
-					   int nr_chips)
-{
-	for (; nr_chips > 0; nr_chips--, chip++) {
-		samsung_gpiolib_add_4bit(chip);
-		s3c_gpiolib_add(chip);
-	}
-}
-
-void __init samsung_gpiolib_add_4bit2_chips(struct s3c_gpio_chip *chip,
-					    int nr_chips)
-{
-	for (; nr_chips > 0; nr_chips--, chip++) {
-		samsung_gpiolib_add_4bit2(chip);
-		s3c_gpiolib_add(chip);
-	}
-}
-
-void __init samsung_gpiolib_add_2bit_chips(struct s3c_gpio_chip *chip,
-					   int nr_chips)
-{
-	for (; nr_chips > 0; nr_chips--, chip++)
-		s3c_gpiolib_add(chip);
-}

drivers/gpio/gpio-s3c24xx.c

-/*
- * Copyright (c) 2008-2010 Simtec Electronics
- *	http://armlinux.simtec.co.uk/
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * S3C24XX GPIOlib support
- *
- * 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.
-*/
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/sysdev.h>
-#include <linux/ioport.h>
-#include <linux/io.h>
-#include <linux/gpio.h>
-#include <asm/irq.h>
-
-#include <mach/hardware.h>
-#include <mach/gpio-fns.h>
-#include <mach/regs-gpio.h>
-
-#include <plat/gpio-core.h>
-#include <plat/gpio-cfg.h>
-#include <plat/gpio-cfg-helpers.h>
-#include <plat/pm.h>
-
-static int s3c24xx_gpiolib_banka_input(struct gpio_chip *chip, unsigned offset)
-{
-	return -EINVAL;
-}
-
-static int s3c24xx_gpiolib_banka_output(struct gpio_chip *chip,
-					unsigned offset, int value)
-{
-	struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip);
-	void __iomem *base = ourchip->base;
-	unsigned long flags;
-	unsigned long dat;
-	unsigned long con;
-
-	local_irq_save(flags);
-
-	con = __raw_readl(base + 0x00);
-	dat = __raw_readl(base + 0x04);
-
-	dat &= ~(1 << offset);
-	if (value)
-		dat |= 1 << offset;
-
-	__raw_writel(dat, base + 0x04);
-
-	con &= ~(1 << offset);
-
-	__raw_writel(con, base + 0x00);
-	__raw_writel(dat, base + 0x04);
-
-	local_irq_restore(flags);
-	return 0;
-}
-
-static int s3c24xx_gpiolib_bankf_toirq(struct gpio_chip *chip, unsigned offset)
-{
-	if (offset < 4)
-		return IRQ_EINT0 + offset;
-	
-	if (offset < 8)
-		return IRQ_EINT4 + offset - 4;
-	
-	return -EINVAL;
-}
-
-static struct s3c_gpio_cfg s3c24xx_gpiocfg_banka = {
-	.set_config	= s3c_gpio_setcfg_s3c24xx_a,
-	.get_config	= s3c_gpio_getcfg_s3c24xx_a,
-};
-
-struct s3c_gpio_cfg s3c24xx_gpiocfg_default = {
-	.set_config	= s3c_gpio_setcfg_s3c24xx,
-	.get_config	= s3c_gpio_getcfg_s3c24xx,
-};
-
-struct s3c_gpio_chip s3c24xx_gpios[] = {
-	[0] = {
-		.base	= S3C2410_GPACON,
-		.pm	= __gpio_pm(&s3c_gpio_pm_1bit),
-		.config	= &s3c24xx_gpiocfg_banka,
-		.chip	= {
-			.base			= S3C2410_GPA(0),
-			.owner			= THIS_MODULE,
-			.label			= "GPIOA",
-			.ngpio			= 24,
-			.direction_input	= s3c24xx_gpiolib_banka_input,
-			.direction_output	= s3c24xx_gpiolib_banka_output,
-		},
-	},
-	[1] = {
-		.base	= S3C2410_GPBCON,
-		.pm	= __gpio_pm(&s3c_gpio_pm_2bit),
-		.chip	= {
-			.base			= S3C2410_GPB(0),
-			.owner			= THIS_MODULE,
-			.label			= "GPIOB",
-			.ngpio			= 16,
-		},
-	},
-	[2] = {
-		.base	= S3C2410_GPCCON,
-		.pm	= __gpio_pm(&s3c_gpio_pm_2bit),
-		.chip	= {
-			.base			= S3C2410_GPC(0),
-			.owner			= THIS_MODULE,
-			.label			= "GPIOC",
-			.ngpio			= 16,
-		},
-	},
-	[3] = {
-		.base	= S3C2410_GPDCON,
-		.pm	= __gpio_pm(&s3c_gpio_pm_2bit),
-		.chip	= {
-			.base			= S3C2410_GPD(0),
-			.owner			= THIS_MODULE,
-			.label			= "GPIOD",
-			.ngpio			= 16,
-		},
-	},
-	[4] = {
-		.base	= S3C2410_GPECON,
-		.pm	= __gpio_pm(&s3c_gpio_pm_2bit),
-		.chip	= {
-			.base			= S3C2410_GPE(0),
-			.label			= "GPIOE",
-			.owner			= THIS_MODULE,
-			.ngpio			= 16,
-		},
-	},
-	[5] = {
-		.base	= S3C2410_GPFCON,
-		.pm	= __gpio_pm(&s3c_gpio_pm_2bit),
-		.chip	= {
-			.base			= S3C2410_GPF(0),
-			.owner			= THIS_MODULE,
-			.label			= "GPIOF",
-			.ngpio			= 8,
-			.to_irq			= s3c24xx_gpiolib_bankf_toirq,
-		},
-	},
-	[6] = {
-		.base	= S3C2410_GPGCON,
-		.pm	= __gpio_pm(&s3c_gpio_pm_2bit),
-		.irq_base = IRQ_EINT8,
-		.chip	= {
-			.base			= S3C2410_GPG(0),
-			.owner			= THIS_MODULE,
-			.label			= "GPIOG",
-			.ngpio			= 16,
-			.to_irq			= samsung_gpiolib_to_irq,
-		},
-	}, {
-		.base	= S3C2410_GPHCON,
-		.pm	= __gpio_pm(&s3c_gpio_pm_2bit),
-		.chip	= {
-			.base			= S3C2410_GPH(0),
-			.owner			= THIS_MODULE,
-			.label			= "GPIOH",
-			.ngpio			= 11,
-		},
-	},
-		/* GPIOS for the S3C2443 and later devices. */
-	{
-		.base	= S3C2440_GPJCON,
-		.pm	= __gpio_pm(&s3c_gpio_pm_2bit),
-		.chip	= {
-			.base			= S3C2410_GPJ(0),
-			.owner			= THIS_MODULE,
-			.label			= "GPIOJ",
-			.ngpio			= 16,
-		},
-	}, {
-		.base	= S3C2443_GPKCON,
-		.pm	= __gpio_pm(&s3c_gpio_pm_2bit),
-		.chip	= {
-			.base			= S3C2410_GPK(0),
-			.owner			= THIS_MODULE,
-			.label			= "GPIOK",
-			.ngpio			= 16,
-		},
-	}, {
-		.base	= S3C2443_GPLCON,
-		.pm	= __gpio_pm(&s3c_gpio_pm_2bit),
-		.chip	= {
-			.base			= S3C2410_GPL(0),
-			.owner			= THIS_MODULE,
-			.label			= "GPIOL",
-			.ngpio			= 15,
-		},
-	}, {
-		.base	= S3C2443_GPMCON,
-		.pm	= __gpio_pm(&s3c_gpio_pm_2bit),
-		.chip	= {
-			.base			= S3C2410_GPM(0),
-			.owner			= THIS_MODULE,
-			.label			= "GPIOM",
-			.ngpio			= 2,
-		},
-	},
-};
-
-static __init int s3c24xx_gpiolib_init(void)
-{
-	struct s3c_gpio_chip *chip = s3c24xx_gpios;
-	int gpn;
-
-	for (gpn = 0; gpn < ARRAY_SIZE(s3c24xx_gpios); gpn++, chip++) {
-		if (!chip->config)
-			chip->config = &s3c24xx_gpiocfg_default;
-
-		s3c_gpiolib_add(chip);
-	}
-
-	return 0;
-}
-core_initcall(s3c24xx_gpiolib_init);
-
-/* gpiolib wrappers until these are totally eliminated */
-
-void s3c2410_gpio_pullup(unsigned int pin, unsigned int to)
-{
-	int ret;
-
-	WARN_ON(to);	/* should be none of these left */
-
-	if (!to) {
-		/* if pull is enabled, try first with up, and if that
-		 * fails, try using down */
-
-		ret = s3c_gpio_setpull(pin, S3C_GPIO_PULL_UP);
-		if (ret)
-			s3c_gpio_setpull(pin, S3C_GPIO_PULL_DOWN);
-	} else {
-		s3c_gpio_setpull(pin, S3C_GPIO_PULL_NONE);
-	}
-}
-EXPORT_SYMBOL(s3c2410_gpio_pullup);
-
-void s3c2410_gpio_setpin(unsigned int pin, unsigned int to)
-{
-	/* do this via gpiolib until all users removed */
-
-	gpio_request(pin, "temporary");
-	gpio_set_value(pin, to);
-	gpio_free(pin);
-}
-EXPORT_SYMBOL(s3c2410_gpio_setpin);
-
-unsigned int s3c2410_gpio_getpin(unsigned int pin)
-{
-	struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin);
-	unsigned long offs = pin - chip->chip.base;
-
-	return __raw_readl(chip->base + 0x04) & (1<< offs);
-}
-EXPORT_SYMBOL(s3c2410_gpio_getpin);
-
-unsigned int s3c2410_modify_misccr(unsigned int clear, unsigned int change)
-{
-	unsigned long flags;
-	unsigned long misccr;
-
-	local_irq_save(flags);
-	misccr = __raw_readl(S3C24XX_MISCCR);
-	misccr &= ~clear;
-	misccr ^= change;
-	__raw_writel(misccr, S3C24XX_MISCCR);
-	local_irq_restore(flags);
-
-	return misccr;
-}
-EXPORT_SYMBOL(s3c2410_modify_misccr);

drivers/gpio/gpio-s3c64xx.c

-/*
- * Copyright 2008 Openmoko, Inc.
- * Copyright 2008 Simtec Electronics
- *      Ben Dooks <ben@simtec.co.uk>
- *      http://armlinux.simtec.co.uk/
- *
- * S3C64XX - GPIOlib support 
- *
- * 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/irq.h>
-#include <linux/io.h>
-#include <linux/gpio.h>
-
-#include <mach/map.h>
-
-#include <plat/gpio-core.h>
-#include <plat/gpio-cfg.h>
-#include <plat/gpio-cfg-helpers.h>
-#include <mach/regs-gpio.h>
-
-/* GPIO bank summary:
- *
- * Bank	GPIOs	Style	SlpCon	ExtInt Group
- * A	8	4Bit	Yes	1
- * B	7	4Bit	Yes	1
- * C	8	4Bit	Yes	2
- * D	5	4Bit	Yes	3
- * E	5	4Bit	Yes	None
- * F	16	2Bit	Yes	4 [1]
- * G	7	4Bit	Yes	5
- * H	10	4Bit[2]	Yes	6
- * I	16	2Bit	Yes	None
- * J	12	2Bit	Yes	None
- * K	16	4Bit[2]	No	None
- * L	15	4Bit[2] No	None
- * M	6	4Bit	No	IRQ_EINT
- * N	16	2Bit	No	IRQ_EINT
- * O	16	2Bit	Yes	7
- * P	15	2Bit	Yes	8
- * Q	9	2Bit	Yes	9
- *
- * [1] BANKF pins 14,15 do not form part of the external interrupt sources
- * [2] BANK has two control registers, GPxCON0 and GPxCON1
- */
-
-static struct s3c_gpio_cfg gpio_4bit_cfg_noint = {
-	.set_config	= s3c_gpio_setcfg_s3c64xx_4bit,
-	.get_config	= s3c_gpio_getcfg_s3c64xx_4bit,
-	.set_pull	= s3c_gpio_setpull_updown,
-	.get_pull	= s3c_gpio_getpull_updown,
-};
-
-static struct s3c_gpio_cfg gpio_4bit_cfg_eint0111 = {
-	.cfg_eint	= 7,
-	.set_config	= s3c_gpio_setcfg_s3c64xx_4bit,
-	.get_config	= s3c_gpio_getcfg_s3c64xx_4bit,
-	.set_pull	= s3c_gpio_setpull_updown,
-	.get_pull	= s3c_gpio_getpull_updown,
-};
-
-static struct s3c_gpio_cfg gpio_4bit_cfg_eint0011 = {
-	.cfg_eint	= 3,
-	.get_config	= s3c_gpio_getcfg_s3c64xx_4bit,
-	.set_config	= s3c_gpio_setcfg_s3c64xx_4bit,
-	.set_pull	= s3c_gpio_setpull_updown,
-	.get_pull	= s3c_gpio_getpull_updown,
-};
-
-static int s3c64xx_gpio2int_gpm(struct gpio_chip *chip, unsigned pin)
-{
-	return pin < 5 ? IRQ_EINT(23) + pin : -ENXIO;
-}
-
-static struct s3c_gpio_chip gpio_4bit[] = {
-	{
-		.base	= S3C64XX_GPA_BASE,
-		.config	= &gpio_4bit_cfg_eint0111,
-		.chip	= {
-			.base	= S3C64XX_GPA(0),
-			.ngpio	= S3C64XX_GPIO_A_NR,
-			.label	= "GPA",
-		},
-	}, {
-		.base	= S3C64XX_GPB_BASE,
-		.config	= &gpio_4bit_cfg_eint0111,
-		.chip	= {
-			.base	= S3C64XX_GPB(0),
-			.ngpio	= S3C64XX_GPIO_B_NR,
-			.label	= "GPB",
-		},
-	}, {
-		.base	= S3C64XX_GPC_BASE,
-		.config	= &gpio_4bit_cfg_eint0111,
-		.chip	= {
-			.base	= S3C64XX_GPC(0),
-			.ngpio	= S3C64XX_GPIO_C_NR,
-			.label	= "GPC",
-		},
-	}, {
-		.base	= S3C64XX_GPD_BASE,
-		.config	= &gpio_4bit_cfg_eint0111,
-		.chip	= {
-			.base	= S3C64XX_GPD(0),
-			.ngpio	= S3C64XX_GPIO_D_NR,
-			.label	= "GPD",
-		},
-	}, {
-		.base	= S3C64XX_GPE_BASE,
-		.config	= &gpio_4bit_cfg_noint,
-		.chip	= {
-			.base	= S3C64XX_GPE(0),
-			.ngpio	= S3C64XX_GPIO_E_NR,
-			.label	= "GPE",
-		},
-	}, {
-		.base	= S3C64XX_GPG_BASE,
-		.config	= &gpio_4bit_cfg_eint0111,
-		.chip	= {
-			.base	= S3C64XX_GPG(0),
-			.ngpio	= S3C64XX_GPIO_G_NR,
-			.label	= "GPG",
-		},
-	}, {
-		.base	= S3C64XX_GPM_BASE,
-		.config	= &gpio_4bit_cfg_eint0011,
-		.chip	= {
-			.base	= S3C64XX_GPM(0),
-			.ngpio	= S3C64XX_GPIO_M_NR,
-			.label	= "GPM",
-			.to_irq = s3c64xx_gpio2int_gpm,
-		},
-	},
-};
-
-static int s3c64xx_gpio2int_gpl(struct gpio_chip *chip, unsigned pin)
-{
-	return pin >= 8 ? IRQ_EINT(16) + pin - 8 : -ENXIO;
-}
-
-static struct s3c_gpio_chip gpio_4bit2[] = {
-	{
-		.base	= S3C64XX_GPH_BASE + 0x4,
-		.config	= &gpio_4bit_cfg_eint0111,
-		.chip	= {
-			.base	= S3C64XX_GPH(0),
-			.ngpio	= S3C64XX_GPIO_H_NR,
-			.label	= "GPH",
-		},
-	}, {
-		.base	= S3C64XX_GPK_BASE + 0x4,
-		.config	= &gpio_4bit_cfg_noint,
-		.chip	= {
-			.base	= S3C64XX_GPK(0),
-			.ngpio	= S3C64XX_GPIO_K_NR,
-			.label	= "GPK",
-		},
-	}, {
-		.base	= S3C64XX_GPL_BASE + 0x4,
-		.config	= &gpio_4bit_cfg_eint0011,
-		.chip	= {
-			.base	= S3C64XX_GPL(0),
-			.ngpio	= S3C64XX_GPIO_L_NR,
-			.label	= "GPL",
-			.to_irq = s3c64xx_gpio2int_gpl,
-		},
-	},
-};
-
-static struct s3c_gpio_cfg gpio_2bit_cfg_noint = {
-	.set_config	= s3c_gpio_setcfg_s3c24xx,
-	.get_config	= s3c_gpio_getcfg_s3c24xx,
-	.set_pull	= s3c_gpio_setpull_updown,
-	.get_pull	= s3c_gpio_getpull_updown,
-};
-
-static struct s3c_gpio_cfg gpio_2bit_cfg_eint10 = {
-	.cfg_eint	= 2,
-	.set_config	= s3c_gpio_setcfg_s3c24xx,
-	.get_config	= s3c_gpio_getcfg_s3c24xx,
-	.set_pull	= s3c_gpio_setpull_updown,
-	.get_pull	= s3c_gpio_getpull_updown,
-};
-
-static struct s3c_gpio_cfg gpio_2bit_cfg_eint11 = {
-	.cfg_eint	= 3,
-	.set_config	= s3c_gpio_setcfg_s3c24xx,
-	.get_config	= s3c_gpio_getcfg_s3c24xx,
-	.set_pull	= s3c_gpio_setpull_updown,
-	.get_pull	= s3c_gpio_getpull_updown,
-};
-
-static struct s3c_gpio_chip gpio_2bit[] = {
-	{
-		.base	= S3C64XX_GPF_BASE,
-		.config	= &gpio_2bit_cfg_eint11,
-		.chip	= {
-			.base	= S3C64XX_GPF(0),
-			.ngpio	= S3C64XX_GPIO_F_NR,
-			.label	= "GPF",
-		},
-	}, {
-		.base	= S3C64XX_GPI_BASE,
-		.config	= &gpio_2bit_cfg_noint,
-		.chip	= {
-			.base	= S3C64XX_GPI(0),
-			.ngpio	= S3C64XX_GPIO_I_NR,
-			.label	= "GPI",
-		},
-	}, {
-		.base	= S3C64XX_GPJ_BASE,
-		.config	= &gpio_2bit_cfg_noint,
-		.chip	= {
-			.base	= S3C64XX_GPJ(0),
-			.ngpio	= S3C64XX_GPIO_J_NR,
-			.label	= "GPJ",
-		},
-	}, {
-		.base	= S3C64XX_GPN_BASE,
-		.irq_base = IRQ_EINT(0),
-		.config	= &gpio_2bit_cfg_eint10,
-		.chip	= {
-			.base	= S3C64XX_GPN(0),
-			.ngpio	= S3C64XX_GPIO_N_NR,
-			.label	= "GPN",
-			.to_irq = samsung_gpiolib_to_irq,
-		},
-	}, {
-		.base	= S3C64XX_GPO_BASE,
-		.config	= &gpio_2bit_cfg_eint11,
-		.chip	= {
-			.base	= S3C64XX_GPO(0),
-			.ngpio	= S3C64XX_GPIO_O_NR,
-			.label	= "GPO",
-		},
-	}, {
-		.base	= S3C64XX_GPP_BASE,
-		.config	= &gpio_2bit_cfg_eint11,
-		.chip	= {
-			.base	= S3C64XX_GPP(0),
-			.ngpio	= S3C64XX_GPIO_P_NR,
-			.label	= "GPP",
-		},
-	}, {
-		.base	= S3C64XX_GPQ_BASE,
-		.config	= &gpio_2bit_cfg_eint11,
-		.chip	= {
-			.base	= S3C64XX_GPQ(0),
-			.ngpio	= S3C64XX_GPIO_Q_NR,
-			.label	= "GPQ",
-		},
-	},
-};
-
-static __init void s3c64xx_gpiolib_add_2bit(struct s3c_gpio_chip *chip)
-{
-	chip->pm = __gpio_pm(&s3c_gpio_pm_2bit);
-}
-
-static __init void s3c64xx_gpiolib_add(struct s3c_gpio_chip *chips,
-				       int nr_chips,
-				       void (*fn)(struct s3c_gpio_chip *))
-{
-	for (; nr_chips > 0; nr_chips--, chips++) {
-		if (fn)
-			(fn)(chips);
-		s3c_gpiolib_add(chips);
-	}
-}
-
-static __init int s3c64xx_gpiolib_init(void)
-{
-	s3c64xx_gpiolib_add(gpio_4bit, ARRAY_SIZE(gpio_4bit),
-			    samsung_gpiolib_add_4bit);
-
-	s3c64xx_gpiolib_add(gpio_4bit2, ARRAY_SIZE(gpio_4bit2),
-			    samsung_gpiolib_add_4bit2);
-
-	s3c64xx_gpiolib_add(gpio_2bit, ARRAY_SIZE(gpio_2bit),
-			    s3c64xx_gpiolib_add_2bit);
-
-	return 0;
-}
-
-core_initcall(s3c64xx_gpiolib_init);

drivers/gpio/gpio-s5pc100.c

-/*
- * S5PC100 - GPIOlib support
- *
- * Copyright (c) 2010 Samsung Electronics Co., Ltd.
- *		http://www.samsung.com
- *
- *  Copyright 2009 Samsung Electronics Co
- *  Kyungmin Park <kyungmin.park@samsung.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/irq.h>
-#include <linux/io.h>
-#include <linux/gpio.h>
-
-#include <mach/map.h>
-#include <mach/regs-gpio.h>
-
-#include <plat/gpio-core.h>
-#include <plat/gpio-cfg.h>
-#include <plat/gpio-cfg-helpers.h>
-
-/* S5PC100 GPIO bank summary:
- *
- * Bank	GPIOs	Style	INT Type
- * A0	8	4Bit	GPIO_INT0
- * A1	5	4Bit	GPIO_INT1
- * B	8	4Bit	GPIO_INT2
- * C	5	4Bit	GPIO_INT3
- * D	7	4Bit	GPIO_INT4
- * E0	8	4Bit	GPIO_INT5
- * E1	6	4Bit	GPIO_INT6
- * F0	8	4Bit	GPIO_INT7
- * F1	8	4Bit	GPIO_INT8
- * F2	8	4Bit	GPIO_INT9
- * F3	4	4Bit	GPIO_INT10
- * G0	8	4Bit	GPIO_INT11
- * G1	3	4Bit	GPIO_INT12
- * G2	7	4Bit	GPIO_INT13
- * G3	7	4Bit	GPIO_INT14
- * H0	8	4Bit	WKUP_INT
- * H1	8	4Bit	WKUP_INT
- * H2	8	4Bit	WKUP_INT
- * H3	8	4Bit	WKUP_INT
- * I	8	4Bit	GPIO_INT15
- * J0	8	4Bit	GPIO_INT16
- * J1	5	4Bit	GPIO_INT17
- * J2	8	4Bit	GPIO_INT18
- * J3	8	4Bit	GPIO_INT19
- * J4	4	4Bit	GPIO_INT20
- * K0	8	4Bit	None
- * K1	6	4Bit	None
- * K2	8	4Bit	None
- * K3	8	4Bit	None
- * L0	8	4Bit	None
- * L1	8	4Bit	None
- * L2	8	4Bit	None
- * L3	8	4Bit	None
- */
-
-static struct s3c_gpio_cfg gpio_cfg = {
-	.set_config	= s3c_gpio_setcfg_s3c64xx_4bit,
-	.set_pull	= s3c_gpio_setpull_updown,
-	.get_pull	= s3c_gpio_getpull_updown,
-};
-
-static struct s3c_gpio_cfg gpio_cfg_eint = {
-	.cfg_eint	= 0xf,
-	.set_config	= s3c_gpio_setcfg_s3c64xx_4bit,
-	.set_pull	= s3c_gpio_setpull_updown,
-	.get_pull	= s3c_gpio_getpull_updown,
-};
-
-static struct s3c_gpio_cfg gpio_cfg_noint = {
-	.set_config	= s3c_gpio_setcfg_s3c64xx_4bit,
-	.set_pull	= s3c_gpio_setpull_updown,
-	.get_pull	= s3c_gpio_getpull_updown,
-};
-
-/*
- * GPIO bank's base address given the index of the bank in the
- * list of all gpio banks.
- */
-#define S5PC100_BANK_BASE(bank_nr)	(S5P_VA_GPIO + ((bank_nr) * 0x20))
-
-/*
- * Following are the gpio banks in S5PC100.
- *
- * The 'config' member when left to NULL, is initialized to the default
- * structure gpio_cfg in the init function below.
- *
- * The 'base' member is also initialized in the init function below.
- * Note: The initialization of 'base' member of s3c_gpio_chip structure
- * uses the above macro and depends on the banks being listed in order here.
- */
-static struct s3c_gpio_chip s5pc100_gpio_chips[] = {
-	{
-		.chip	= {
-			.base	= S5PC100_GPA0(0),
-			.ngpio	= S5PC100_GPIO_A0_NR,
-			.label	= "GPA0",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PC100_GPA1(0),
-			.ngpio	= S5PC100_GPIO_A1_NR,
-			.label	= "GPA1",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PC100_GPB(0),
-			.ngpio	= S5PC100_GPIO_B_NR,
-			.label	= "GPB",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PC100_GPC(0),
-			.ngpio	= S5PC100_GPIO_C_NR,
-			.label	= "GPC",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PC100_GPD(0),
-			.ngpio	= S5PC100_GPIO_D_NR,
-			.label	= "GPD",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PC100_GPE0(0),
-			.ngpio	= S5PC100_GPIO_E0_NR,
-			.label	= "GPE0",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PC100_GPE1(0),
-			.ngpio	= S5PC100_GPIO_E1_NR,
-			.label	= "GPE1",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PC100_GPF0(0),
-			.ngpio	= S5PC100_GPIO_F0_NR,
-			.label	= "GPF0",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PC100_GPF1(0),
-			.ngpio	= S5PC100_GPIO_F1_NR,
-			.label	= "GPF1",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PC100_GPF2(0),
-			.ngpio	= S5PC100_GPIO_F2_NR,
-			.label	= "GPF2",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PC100_GPF3(0),
-			.ngpio	= S5PC100_GPIO_F3_NR,
-			.label	= "GPF3",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PC100_GPG0(0),
-			.ngpio	= S5PC100_GPIO_G0_NR,
-			.label	= "GPG0",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PC100_GPG1(0),
-			.ngpio	= S5PC100_GPIO_G1_NR,
-			.label	= "GPG1",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PC100_GPG2(0),
-			.ngpio	= S5PC100_GPIO_G2_NR,
-			.label	= "GPG2",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PC100_GPG3(0),
-			.ngpio	= S5PC100_GPIO_G3_NR,
-			.label	= "GPG3",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PC100_GPI(0),
-			.ngpio	= S5PC100_GPIO_I_NR,
-			.label	= "GPI",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PC100_GPJ0(0),
-			.ngpio	= S5PC100_GPIO_J0_NR,
-			.label	= "GPJ0",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PC100_GPJ1(0),
-			.ngpio	= S5PC100_GPIO_J1_NR,
-			.label	= "GPJ1",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PC100_GPJ2(0),
-			.ngpio	= S5PC100_GPIO_J2_NR,
-			.label	= "GPJ2",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PC100_GPJ3(0),
-			.ngpio	= S5PC100_GPIO_J3_NR,
-			.label	= "GPJ3",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PC100_GPJ4(0),
-			.ngpio	= S5PC100_GPIO_J4_NR,
-			.label	= "GPJ4",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= S5PC100_GPK0(0),
-			.ngpio	= S5PC100_GPIO_K0_NR,
-			.label	= "GPK0",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= S5PC100_GPK1(0),
-			.ngpio	= S5PC100_GPIO_K1_NR,
-			.label	= "GPK1",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= S5PC100_GPK2(0),
-			.ngpio	= S5PC100_GPIO_K2_NR,
-			.label	= "GPK2",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= S5PC100_GPK3(0),
-			.ngpio	= S5PC100_GPIO_K3_NR,
-			.label	= "GPK3",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= S5PC100_GPL0(0),
-			.ngpio	= S5PC100_GPIO_L0_NR,
-			.label	= "GPL0",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= S5PC100_GPL1(0),
-			.ngpio	= S5PC100_GPIO_L1_NR,
-			.label	= "GPL1",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= S5PC100_GPL2(0),
-			.ngpio	= S5PC100_GPIO_L2_NR,
-			.label	= "GPL2",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= S5PC100_GPL3(0),
-			.ngpio	= S5PC100_GPIO_L3_NR,
-			.label	= "GPL3",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= S5PC100_GPL4(0),
-			.ngpio	= S5PC100_GPIO_L4_NR,
-			.label	= "GPL4",
-		},
-	}, {
-		.base	= (S5P_VA_GPIO + 0xC00),
-		.config	= &gpio_cfg_eint,
-		.irq_base = IRQ_EINT(0),
-		.chip	= {
-			.base	= S5PC100_GPH0(0),
-			.ngpio	= S5PC100_GPIO_H0_NR,
-			.label	= "GPH0",
-			.to_irq = samsung_gpiolib_to_irq,
-		},
-	}, {
-		.base	= (S5P_VA_GPIO + 0xC20),
-		.config	= &gpio_cfg_eint,
-		.irq_base = IRQ_EINT(8),
-		.chip	= {
-			.base	= S5PC100_GPH1(0),
-			.ngpio	= S5PC100_GPIO_H1_NR,
-			.label	= "GPH1",
-			.to_irq = samsung_gpiolib_to_irq,
-		},
-	}, {
-		.base	= (S5P_VA_GPIO + 0xC40),
-		.config	= &gpio_cfg_eint,
-		.irq_base = IRQ_EINT(16),
-		.chip	= {
-			.base	= S5PC100_GPH2(0),
-			.ngpio	= S5PC100_GPIO_H2_NR,
-			.label	= "GPH2",
-			.to_irq = samsung_gpiolib_to_irq,
-		},
-	}, {
-		.base	= (S5P_VA_GPIO + 0xC60),
-		.config	= &gpio_cfg_eint,
-		.irq_base = IRQ_EINT(24),
-		.chip	= {
-			.base	= S5PC100_GPH3(0),
-			.ngpio	= S5PC100_GPIO_H3_NR,
-			.label	= "GPH3",
-			.to_irq = samsung_gpiolib_to_irq,
-		},
-	},
-};
-
-static __init int s5pc100_gpiolib_init(void)
-{
-	struct s3c_gpio_chip *chip = s5pc100_gpio_chips;
-	int nr_chips = ARRAY_SIZE(s5pc100_gpio_chips);
-	int gpioint_group = 0;
-	int i;
-
-	for (i = 0; i < nr_chips; i++, chip++) {
-		if (chip->config == NULL) {
-			chip->config = &gpio_cfg;
-			chip->group = gpioint_group++;
-		}
-		if (chip->base == NULL)
-			chip->base = S5PC100_BANK_BASE(i);
-	}
-
-	samsung_gpiolib_add_4bit_chips(s5pc100_gpio_chips, nr_chips);
-	s5p_register_gpioint_bank(IRQ_GPIOINT, 0, S5P_GPIOINT_GROUP_MAXNR);
-
-	return 0;
-}
-core_initcall(s5pc100_gpiolib_init);

drivers/gpio/gpio-s5pv210.c

-/*
- * S5PV210 - GPIOlib support
- *
- * Copyright (c) 2010 Samsung Electronics Co., Ltd.
- *		http://www.samsung.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/irq.h>
-#include <linux/io.h>
-#include <linux/gpio.h>
-#include <plat/gpio-core.h>
-#include <plat/gpio-cfg.h>
-#include <plat/gpio-cfg-helpers.h>
-#include <mach/map.h>
-
-static struct s3c_gpio_cfg gpio_cfg = {
-	.set_config	= s3c_gpio_setcfg_s3c64xx_4bit,
-	.set_pull	= s3c_gpio_setpull_updown,
-	.get_pull	= s3c_gpio_getpull_updown,
-};
-
-static struct s3c_gpio_cfg gpio_cfg_noint = {
-	.set_config	= s3c_gpio_setcfg_s3c64xx_4bit,
-	.set_pull	= s3c_gpio_setpull_updown,
-	.get_pull	= s3c_gpio_getpull_updown,
-};
-
-/* GPIO bank's base address given the index of the bank in the
- * list of all gpio banks.
- */
-#define S5PV210_BANK_BASE(bank_nr)	(S5P_VA_GPIO + ((bank_nr) * 0x20))
-
-/*
- * Following are the gpio banks in v210.
- *
- * The 'config' member when left to NULL, is initialized to the default
- * structure gpio_cfg in the init function below.
- *
- * The 'base' member is also initialized in the init function below.
- * Note: The initialization of 'base' member of s3c_gpio_chip structure
- * uses the above macro and depends on the banks being listed in order here.
- */
-static struct s3c_gpio_chip s5pv210_gpio_4bit[] = {
-	{
-		.chip	= {
-			.base	= S5PV210_GPA0(0),
-			.ngpio	= S5PV210_GPIO_A0_NR,
-			.label	= "GPA0",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPA1(0),
-			.ngpio	= S5PV210_GPIO_A1_NR,
-			.label	= "GPA1",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPB(0),
-			.ngpio	= S5PV210_GPIO_B_NR,
-			.label	= "GPB",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPC0(0),
-			.ngpio	= S5PV210_GPIO_C0_NR,
-			.label	= "GPC0",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPC1(0),
-			.ngpio	= S5PV210_GPIO_C1_NR,
-			.label	= "GPC1",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPD0(0),
-			.ngpio	= S5PV210_GPIO_D0_NR,
-			.label	= "GPD0",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPD1(0),
-			.ngpio	= S5PV210_GPIO_D1_NR,
-			.label	= "GPD1",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPE0(0),
-			.ngpio	= S5PV210_GPIO_E0_NR,
-			.label	= "GPE0",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPE1(0),
-			.ngpio	= S5PV210_GPIO_E1_NR,
-			.label	= "GPE1",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPF0(0),
-			.ngpio	= S5PV210_GPIO_F0_NR,
-			.label	= "GPF0",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPF1(0),
-			.ngpio	= S5PV210_GPIO_F1_NR,
-			.label	= "GPF1",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPF2(0),
-			.ngpio	= S5PV210_GPIO_F2_NR,
-			.label	= "GPF2",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPF3(0),
-			.ngpio	= S5PV210_GPIO_F3_NR,
-			.label	= "GPF3",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPG0(0),
-			.ngpio	= S5PV210_GPIO_G0_NR,
-			.label	= "GPG0",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPG1(0),
-			.ngpio	= S5PV210_GPIO_G1_NR,
-			.label	= "GPG1",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPG2(0),
-			.ngpio	= S5PV210_GPIO_G2_NR,
-			.label	= "GPG2",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPG3(0),
-			.ngpio	= S5PV210_GPIO_G3_NR,
-			.label	= "GPG3",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= S5PV210_GPI(0),
-			.ngpio	= S5PV210_GPIO_I_NR,
-			.label	= "GPI",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPJ0(0),
-			.ngpio	= S5PV210_GPIO_J0_NR,
-			.label	= "GPJ0",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPJ1(0),
-			.ngpio	= S5PV210_GPIO_J1_NR,
-			.label	= "GPJ1",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPJ2(0),
-			.ngpio	= S5PV210_GPIO_J2_NR,
-			.label	= "GPJ2",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPJ3(0),
-			.ngpio	= S5PV210_GPIO_J3_NR,
-			.label	= "GPJ3",
-		},
-	}, {
-		.chip	= {
-			.base	= S5PV210_GPJ4(0),
-			.ngpio	= S5PV210_GPIO_J4_NR,
-			.label	= "GPJ4",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= S5PV210_MP01(0),
-			.ngpio	= S5PV210_GPIO_MP01_NR,
-			.label	= "MP01",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= S5PV210_MP02(0),
-			.ngpio	= S5PV210_GPIO_MP02_NR,
-			.label	= "MP02",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= S5PV210_MP03(0),
-			.ngpio	= S5PV210_GPIO_MP03_NR,
-			.label	= "MP03",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= S5PV210_MP04(0),
-			.ngpio	= S5PV210_GPIO_MP04_NR,
-			.label	= "MP04",
-		},
-	}, {
-		.config	= &gpio_cfg_noint,
-		.chip	= {
-			.base	= S5PV210_MP05(0),
-			.ngpio	= S5PV210_GPIO_MP05_NR,
-			.label	= "MP05",
-		},
-	}, {
-		.base	= (S5P_VA_GPIO + 0xC00),
-		.config	= &gpio_cfg_noint,
-		.irq_base = IRQ_EINT(0),
-		.chip	= {
-			.base	= S5PV210_GPH0(0),
-			.ngpio	= S5PV210_GPIO_H0_NR,
-			.label	= "GPH0",
-			.to_irq = samsung_gpiolib_to_irq,
-		},
-	}, {
-		.base	= (S5P_VA_GPIO + 0xC20),
-		.config	= &gpio_cfg_noint,
-		.irq_base = IRQ_EINT(8),
-		.chip	= {
-			.base	= S5PV210_GPH1(0),
-			.ngpio	= S5PV210_GPIO_H1_NR,
-			.label	= "GPH1",
-			.to_irq = samsung_gpiolib_to_irq,
-		},
-	}, {
-		.base	= (S5P_VA_GPIO + 0xC40),
-		.config	= &gpio_cfg_noint,
-		.irq_base = IRQ_EINT(16),
-		.chip	= {
-			.base	= S5PV210_GPH2(0),
-			.ngpio	= S5PV210_GPIO_H2_NR,
-			.label	= "GPH2",
-			.to_irq = samsung_gpiolib_to_irq,
-		},
-	}, {
-		.base	= (S5P_VA_GPIO + 0xC60),
-		.config	= &gpio_cfg_noint,
-		.irq_base = IRQ_EINT(24),
-		.chip	= {
-			.base	= S5PV210_GPH3(0),
-			.ngpio	= S5PV210_GPIO_H3_NR,
-			.label	= "GPH3",
-			.to_irq = samsung_gpiolib_to_irq,
-		},
-	},
-};
-
-static __init int s5pv210_gpiolib_init(void)
-{
-	struct s3c_gpio_chip *chip = s5pv210_gpio_4bit;
-	int nr_chips = ARRAY_SIZE(s5pv210_gpio_4bit);
-	int gpioint_group = 0;
-	int i = 0;
-
-	for (i = 0; i < nr_chips; i++, chip++) {
-		if (chip->config == NULL) {
-			chip->config = &gpio_cfg;
-			chip->group = gpioint_group++;
-		}
-		if (chip->base == NULL)
-			chip->base = S5PV210_BANK_BASE(i);
-	}
-
-	samsung_gpiolib_add_4bit_chips(s5pv210_gpio_4bit, nr_chips);
-	s5p_register_gpioint_bank(IRQ_GPIOINT, 0, S5P_GPIOINT_GROUP_MAXNR);
-
-	return 0;
-}
-core_initcall(s5pv210_gpiolib_init);