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linux/drivers/gpio/gpio-samsung.c
Mark Brown fbe92fcc75 gpio/samsung: Complain loudly if we don't know the SoC 
If we don't know the SoC type then we won't add any chips which is rather
unfortunate as neither GPIO nor pinmux APIs will work, breaking lots of
different subsystems. Logging at least provides a hint to the user as to
what's gone wrong.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-10-18 08:46:50 +09:00

2713 lines
58 KiB
C
Raw Blame History

/*
* Copyright (c) 2009-2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* Copyright 2008 Openmoko, Inc.
* Copyright 2008 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
* http://armlinux.simtec.co.uk/
*
* 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 <linux/init.h>
#include <linux/spinlock.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/sysdev.h>
#include <linux/ioport.h>
#include <asm/irq.h>
#include <mach/hardware.h>
#include <mach/map.h>
#include <mach/regs-clock.h>
#include <mach/regs-gpio.h>
#include <plat/cpu.h>
#include <plat/gpio-core.h>
#include <plat/gpio-cfg.h>
#include <plat/gpio-cfg-helpers.h>
#include <plat/gpio-fns.h>
#include <plat/pm.h>
#ifndef DEBUG_GPIO
#define gpio_dbg(x...) do { } while (0)
#else
#define gpio_dbg(x...) printk(KERN_DEBUG x)
#endif
int samsung_gpio_setpull_updown(struct samsung_gpio_chip *chip,
unsigned int off, samsung_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;
}
samsung_gpio_pull_t samsung_gpio_getpull_updown(struct samsung_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 samsung_gpio_pull_t)pup;
}
int s3c2443_gpio_setpull(struct samsung_gpio_chip *chip,
unsigned int off, samsung_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 samsung_gpio_setpull_updown(chip, off, pull);
}
samsung_gpio_pull_t s3c2443_gpio_getpull(struct samsung_gpio_chip *chip,
unsigned int off)
{
samsung_gpio_pull_t pull;
pull = samsung_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;
}
static int s3c24xx_gpio_setpull_1(struct samsung_gpio_chip *chip,
unsigned int off, samsung_gpio_pull_t pull,
samsung_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 samsung_gpio_pull_t s3c24xx_gpio_getpull_1(struct samsung_gpio_chip *chip,
unsigned int off,
samsung_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;
}
samsung_gpio_pull_t s3c24xx_gpio_getpull_1up(struct samsung_gpio_chip *chip,
unsigned int off)
{
return s3c24xx_gpio_getpull_1(chip, off, S3C_GPIO_PULL_UP);
}
int s3c24xx_gpio_setpull_1up(struct samsung_gpio_chip *chip,
unsigned int off, samsung_gpio_pull_t pull)
{
return s3c24xx_gpio_setpull_1(chip, off, pull, S3C_GPIO_PULL_UP);
}
samsung_gpio_pull_t s3c24xx_gpio_getpull_1down(struct samsung_gpio_chip *chip,
unsigned int off)
{
return s3c24xx_gpio_getpull_1(chip, off, S3C_GPIO_PULL_DOWN);
}
int s3c24xx_gpio_setpull_1down(struct samsung_gpio_chip *chip,
unsigned int off, samsung_gpio_pull_t pull)
{
return s3c24xx_gpio_setpull_1(chip, off, pull, S3C_GPIO_PULL_DOWN);
}
static int exynos4_gpio_setpull(struct samsung_gpio_chip *chip,
unsigned int off, samsung_gpio_pull_t pull)
{
if (pull == S3C_GPIO_PULL_UP)
pull = 3;
return samsung_gpio_setpull_updown(chip, off, pull);
}
static samsung_gpio_pull_t exynos4_gpio_getpull(struct samsung_gpio_chip *chip,
unsigned int off)
{
samsung_gpio_pull_t pull;
pull = samsung_gpio_getpull_updown(chip, off);
if (pull == 3)
pull = S3C_GPIO_PULL_UP;
return pull;
}
/*
* samsung_gpio_setcfg_2bit - Samsung 2bit style GPIO configuration.
* @chip: The gpio chip that is being configured.
* @off: The offset for the GPIO being configured.
* @cfg: The configuration value to set.
*
* This helper deal with the GPIO cases where the control register
* has two bits of configuration per gpio, which have the following
* functions:
* 00 = input
* 01 = output
* 1x = special function
*/
static int samsung_gpio_setcfg_2bit(struct samsung_gpio_chip *chip,
unsigned int off, unsigned int cfg)
{
void __iomem *reg = chip->base;
unsigned int shift = off * 2;
u32 con;
if (samsung_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;
}
/*
* samsung_gpio_getcfg_2bit - Samsung 2bit style GPIO configuration read.
* @chip: The gpio chip that is being configured.
* @off: The offset for the GPIO being configured.
*
* The reverse of samsung_gpio_setcfg_2bit(). Will return a value whicg
* could be directly passed back to samsung_gpio_setcfg_2bit(), from the
* S3C_GPIO_SPECIAL() macro.
*/
static unsigned int samsung_gpio_getcfg_2bit(struct samsung_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);
}
/*
* samsung_gpio_setcfg_4bit - Samsung 4bit single register GPIO config.
* @chip: The gpio chip that is being configured.
* @off: The offset for the GPIO being configured.
* @cfg: The configuration value to set.
*
* This helper deal with the GPIO cases where the control register has 4 bits
* of control per GPIO, generally in the form of:
* 0000 = Input
* 0001 = Output
* others = Special functions (dependent on bank)
*
* Note, since the code to deal with the case where there are two control
* registers instead of one, we do not have a separate set of functions for
* each case.
*/
static int samsung_gpio_setcfg_4bit(struct samsung_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 (samsung_gpio_is_cfg_special(cfg)) {
cfg &= 0xf;
cfg <<= shift;
}
con = __raw_readl(reg);
con &= ~(0xf << shift);
con |= cfg;
__raw_writel(con, reg);
return 0;
}
/*
* samsung_gpio_getcfg_4bit - Samsung 4bit single register GPIO config read.
* @chip: The gpio chip that is being configured.
* @off: The offset for the GPIO being configured.
*
* The reverse of samsung_gpio_setcfg_4bit(), turning a gpio configuration
* register setting into a value the software can use, such as could be passed
* to samsung_gpio_setcfg_4bit().
*
* @sa samsung_gpio_getcfg_2bit
*/
static unsigned samsung_gpio_getcfg_4bit(struct samsung_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);
}
#ifdef CONFIG_PLAT_S3C24XX
/*
* s3c24xx_gpio_setcfg_abank - S3C24XX style GPIO configuration (Bank A)
* @chip: The gpio chip that is being configured.
* @off: The offset for the GPIO being configured.
* @cfg: The configuration value to set.
*
* This helper deal with the GPIO cases where the control register
* has one bit of configuration for the gpio, where setting the bit
* means the pin is in special function mode and unset means output.
*/
static int s3c24xx_gpio_setcfg_abank(struct samsung_gpio_chip *chip,
unsigned int off, unsigned int cfg)
{
void __iomem *reg = chip->base;
unsigned int shift = off;
u32 con;
if (samsung_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;
}
/*
* s3c24xx_gpio_getcfg_abank - S3C24XX style GPIO configuration read (Bank A)
* @chip: The gpio chip that is being configured.
* @off: The offset for the GPIO being configured.
*
* The reverse of s3c24xx_gpio_setcfg_abank() turning an GPIO into a usable
* GPIO configuration value.
*
* @sa samsung_gpio_getcfg_2bit
* @sa samsung_gpio_getcfg_4bit
*/
static unsigned s3c24xx_gpio_getcfg_abank(struct samsung_gpio_chip *chip,
unsigned int off)
{
u32 con;
con = __raw_readl(chip->base);
con >>= off;
con &= 1;
con++;
return S3C_GPIO_SFN(con);
}
#endif
#if defined(CONFIG_CPU_S5P6440) || defined(CONFIG_CPU_S5P6450)
static int s5p64x0_gpio_setcfg_rbank(struct samsung_gpio_chip *chip,
unsigned int off, unsigned int cfg)
{
void __iomem *reg = chip->base;
unsigned int shift;
u32 con;
switch (off) {
case 0:
case 1:
case 2:
case 3:
case 4:
case 5:
shift = (off & 7) * 4;
reg -= 4;
break;
case 6:
shift = ((off + 1) & 7) * 4;
reg -= 4;
default:
shift = ((off + 1) & 7) * 4;
break;
}
if (samsung_gpio_is_cfg_special(cfg)) {
cfg &= 0xf;
cfg <<= shift;
}
con = __raw_readl(reg);
con &= ~(0xf << shift);
con |= cfg;
__raw_writel(con, reg);
return 0;
}
#endif
static void __init samsung_gpiolib_set_cfg(struct samsung_gpio_cfg *chipcfg,
int nr_chips)
{
for (; nr_chips > 0; nr_chips--, chipcfg++) {
if (!chipcfg->set_config)
chipcfg->set_config = samsung_gpio_setcfg_4bit;
if (!chipcfg->get_config)
chipcfg->get_config = samsung_gpio_getcfg_4bit;
if (!chipcfg->set_pull)
chipcfg->set_pull = samsung_gpio_setpull_updown;
if (!chipcfg->get_pull)
chipcfg->get_pull = samsung_gpio_getpull_updown;
}
}
struct samsung_gpio_cfg s3c24xx_gpiocfg_default = {
.set_config = samsung_gpio_setcfg_2bit,
.get_config = samsung_gpio_getcfg_2bit,
};
#ifdef CONFIG_PLAT_S3C24XX
static struct samsung_gpio_cfg s3c24xx_gpiocfg_banka = {
.set_config = s3c24xx_gpio_setcfg_abank,
.get_config = s3c24xx_gpio_getcfg_abank,
};
#endif
static struct samsung_gpio_cfg exynos4_gpio_cfg = {
.set_pull = exynos4_gpio_setpull,
.get_pull = exynos4_gpio_getpull,
.set_config = samsung_gpio_setcfg_4bit,
.get_config = samsung_gpio_getcfg_4bit,
};
#if defined(CONFIG_CPU_S5P6440) || defined(CONFIG_CPU_S5P6450)
static struct samsung_gpio_cfg s5p64x0_gpio_cfg_rbank = {
.cfg_eint = 0x3,
.set_config = s5p64x0_gpio_setcfg_rbank,
.get_config = samsung_gpio_getcfg_4bit,
.set_pull = samsung_gpio_setpull_updown,
.get_pull = samsung_gpio_getpull_updown,
};
#endif
static struct samsung_gpio_cfg samsung_gpio_cfgs[] = {
{
.cfg_eint = 0x0,
}, {
.cfg_eint = 0x3,
}, {
.cfg_eint = 0x7,
}, {
.cfg_eint = 0xF,
}, {
.cfg_eint = 0x0,
.set_config = samsung_gpio_setcfg_2bit,
.get_config = samsung_gpio_getcfg_2bit,
}, {
.cfg_eint = 0x2,
.set_config = samsung_gpio_setcfg_2bit,
.get_config = samsung_gpio_getcfg_2bit,
}, {
.cfg_eint = 0x3,
.set_config = samsung_gpio_setcfg_2bit,
.get_config = samsung_gpio_getcfg_2bit,
}, {
.set_config = samsung_gpio_setcfg_2bit,
.get_config = samsung_gpio_getcfg_2bit,
}, {
.set_pull = exynos4_gpio_setpull,
.get_pull = exynos4_gpio_getpull,
}, {
.cfg_eint = 0x3,
.set_pull = exynos4_gpio_setpull,
.get_pull = exynos4_gpio_getpull,
}
};
/*
* 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 samsung_gpiolib_2bit_input(struct gpio_chip *chip, unsigned offset)
{
struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
void __iomem *base = ourchip->base;
unsigned long flags;
unsigned long con;
samsung_gpio_lock(ourchip, flags);
con = __raw_readl(base + 0x00);
con &= ~(3 << (offset * 2));
__raw_writel(con, base + 0x00);
samsung_gpio_unlock(ourchip, flags);
return 0;
}
static int samsung_gpiolib_2bit_output(struct gpio_chip *chip,
unsigned offset, int value)
{
struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
void __iomem *base = ourchip->base;
unsigned long flags;
unsigned long dat;
unsigned long con;
samsung_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);
samsung_gpio_unlock(ourchip, flags);
return 0;
}
/*
* 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 samsung_gpiolib_get and samsung_gpiolib_set to change the
* state of the output.
*/
static int samsung_gpiolib_4bit_input(struct gpio_chip *chip,
unsigned int offset)
{
struct samsung_gpio_chip *ourchip = to_samsung_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 samsung_gpio_chip *ourchip = to_samsung_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 samsung_gpiolib_get and samsung_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 samsung_gpio_chip *ourchip = to_samsung_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 samsung_gpio_chip *ourchip = to_samsung_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;
}
#ifdef CONFIG_PLAT_S3C24XX
/* The next set of routines are for the case of s3c24xx bank a */
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 samsung_gpio_chip *ourchip = to_samsung_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;
}
#endif
/* The next set of routines are for the case of s5p64x0 bank r */
static int s5p64x0_gpiolib_rbank_input(struct gpio_chip *chip,
unsigned int offset)
{
struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
void __iomem *base = ourchip->base;
void __iomem *regcon = base;
unsigned long con;
unsigned long flags;
switch (offset) {
case 6:
offset += 1;
case 0:
case 1:
case 2:
case 3:
case 4:
case 5:
regcon -= 4;
break;
default:
offset -= 7;
break;
}
samsung_gpio_lock(ourchip, flags);
con = __raw_readl(regcon);
con &= ~(0xf << con_4bit_shift(offset));
__raw_writel(con, regcon);
samsung_gpio_unlock(ourchip, flags);
return 0;
}
static int s5p64x0_gpiolib_rbank_output(struct gpio_chip *chip,
unsigned int offset, int value)
{
struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
void __iomem *base = ourchip->base;
void __iomem *regcon = base;
unsigned long con;
unsigned long dat;
unsigned long flags;
unsigned con_offset = offset;
switch (con_offset) {
case 6:
con_offset += 1;
case 0:
case 1:
case 2:
case 3:
case 4:
case 5:
regcon -= 4;
break;
default:
con_offset -= 7;
break;
}
samsung_gpio_lock(ourchip, flags);
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(con, regcon);
__raw_writel(dat, base + GPIODAT_OFF);
samsung_gpio_unlock(ourchip, flags);
return 0;
}
static void samsung_gpiolib_set(struct gpio_chip *chip,
unsigned offset, int value)
{
struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
void __iomem *base = ourchip->base;
unsigned long flags;
unsigned long dat;
samsung_gpio_lock(ourchip, flags);
dat = __raw_readl(base + 0x04);
dat &= ~(1 << offset);
if (value)
dat |= 1 << offset;
__raw_writel(dat, base + 0x04);
samsung_gpio_unlock(ourchip, flags);
}
static int samsung_gpiolib_get(struct gpio_chip *chip, unsigned offset)
{
struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
unsigned long val;
val = __raw_readl(ourchip->base + 0x04);
val >>= offset;
val &= 1;
return val;
}
/*
* CONFIG_S3C_GPIO_TRACK enables the tracking of the s3c specific gpios
* for use with the configuration calls, and other parts of the s3c gpiolib
* support code.
*
* Not all s3c support code will need this, as some configurations of cpu
* may only support one or two different configuration options and have an
* easy gpio to samsung_gpio_chip mapping function. If this is the case, then
* the machine support file should provide its own samsung_gpiolib_getchip()
* and any other necessary functions.
*/
#ifdef CONFIG_S3C_GPIO_TRACK
struct samsung_gpio_chip *s3c_gpios[S3C_GPIO_END];
static __init void s3c_gpiolib_track(struct samsung_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 */
/*
* samsung_gpiolib_add() - add the Samsung gpio_chip.
* @chip: The chip to register
*
* This is a wrapper to gpiochip_add() that takes our specific gpio chip
* information and makes the necessary alterations for the platform and
* notes the information for use with the configuration systems and any
* other parts of the system.
*/
static void __init samsung_gpiolib_add(struct samsung_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 = samsung_gpiolib_2bit_input;
if (!gc->direction_output)
gc->direction_output = samsung_gpiolib_2bit_output;
if (!gc->set)
gc->set = samsung_gpiolib_set;
if (!gc->get)
gc->get = samsung_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);
}
static void __init s3c24xx_gpiolib_add_chips(struct samsung_gpio_chip *chip,
int nr_chips, void __iomem *base)
{
int i;
struct gpio_chip *gc = &chip->chip;
for (i = 0 ; i < nr_chips; i++, chip++) {
/* skip banks not present on SoC */
if (chip->chip.base >= S3C_GPIO_END)
continue;
if (!chip->config)
chip->config = &s3c24xx_gpiocfg_default;
if (!chip->pm)
chip->pm = __gpio_pm(&samsung_gpio_pm_2bit);
if ((base != NULL) && (chip->base == NULL))
chip->base = base + ((i) * 0x10);
if (!gc->direction_input)
gc->direction_input = samsung_gpiolib_2bit_input;
if (!gc->direction_output)
gc->direction_output = samsung_gpiolib_2bit_output;
samsung_gpiolib_add(chip);
}
}
static void __init samsung_gpiolib_add_2bit_chips(struct samsung_gpio_chip *chip,
int nr_chips, void __iomem *base,
unsigned int offset)
{
int i;
for (i = 0 ; i < nr_chips; i++, chip++) {
chip->chip.direction_input = samsung_gpiolib_2bit_input;
chip->chip.direction_output = samsung_gpiolib_2bit_output;
if (!chip->config)
chip->config = &samsung_gpio_cfgs[7];
if (!chip->pm)
chip->pm = __gpio_pm(&samsung_gpio_pm_2bit);
if ((base != NULL) && (chip->base == NULL))
chip->base = base + ((i) * offset);
samsung_gpiolib_add(chip);
}
}
/*
* samsung_gpiolib_add_4bit_chips - 4bit single register GPIO config.
* @chip: The gpio chip that is being configured.
* @nr_chips: The no of chips (gpio ports) for the GPIO being configured.
*
* This helper deal with the GPIO cases where the control register has 4 bits
* of control per GPIO, generally in the form of:
* 0000 = Input
* 0001 = Output
* others = Special functions (dependent on bank)
*
* Note, since the code to deal with the case where there are two control
* registers instead of one, we do not have a separate set of function
* (samsung_gpiolib_add_4bit2_chips)for each case.
*/
static void __init samsung_gpiolib_add_4bit_chips(struct samsung_gpio_chip *chip,
int nr_chips, void __iomem *base)
{
int i;
for (i = 0 ; i < nr_chips; i++, chip++) {
chip->chip.direction_input = samsung_gpiolib_4bit_input;
chip->chip.direction_output = samsung_gpiolib_4bit_output;
if (!chip->config)
chip->config = &samsung_gpio_cfgs[2];
if (!chip->pm)
chip->pm = __gpio_pm(&samsung_gpio_pm_4bit);
if ((base != NULL) && (chip->base == NULL))
chip->base = base + ((i) * 0x20);
samsung_gpiolib_add(chip);
}
}
static void __init samsung_gpiolib_add_4bit2_chips(struct samsung_gpio_chip *chip,
int nr_chips)
{
for (; nr_chips > 0; nr_chips--, chip++) {
chip->chip.direction_input = samsung_gpiolib_4bit2_input;
chip->chip.direction_output = samsung_gpiolib_4bit2_output;
if (!chip->config)
chip->config = &samsung_gpio_cfgs[2];
if (!chip->pm)
chip->pm = __gpio_pm(&samsung_gpio_pm_4bit);
samsung_gpiolib_add(chip);
}
}
static void __init s5p64x0_gpiolib_add_rbank(struct samsung_gpio_chip *chip,
int nr_chips)
{
for (; nr_chips > 0; nr_chips--, chip++) {
chip->chip.direction_input = s5p64x0_gpiolib_rbank_input;
chip->chip.direction_output = s5p64x0_gpiolib_rbank_output;
if (!chip->pm)
chip->pm = __gpio_pm(&samsung_gpio_pm_4bit);
samsung_gpiolib_add(chip);
}
}
int samsung_gpiolib_to_irq(struct gpio_chip *chip, unsigned int offset)
{
struct samsung_gpio_chip *samsung_chip = container_of(chip, struct samsung_gpio_chip, chip);
return samsung_chip->irq_base + offset;
}
#ifdef CONFIG_PLAT_S3C24XX
static int s3c24xx_gpiolib_fbank_to_irq(struct gpio_chip *chip, unsigned offset)
{
if (offset < 4)
return IRQ_EINT0 + offset;
if (offset < 8)
return IRQ_EINT4 + offset - 4;
return -EINVAL;
}
#endif
#ifdef CONFIG_PLAT_S3C64XX
static int s3c64xx_gpiolib_mbank_to_irq(struct gpio_chip *chip, unsigned pin)
{
return pin < 5 ? IRQ_EINT(23) + pin : -ENXIO;
}
static int s3c64xx_gpiolib_lbank_to_irq(struct gpio_chip *chip, unsigned pin)
{
return pin >= 8 ? IRQ_EINT(16) + pin - 8 : -ENXIO;
}
#endif
struct samsung_gpio_chip s3c24xx_gpios[] = {
#ifdef CONFIG_PLAT_S3C24XX
{
.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,
},
}, {
.chip = {
.base = S3C2410_GPB(0),
.owner = THIS_MODULE,
.label = "GPIOB",
.ngpio = 16,
},
}, {
.chip = {
.base = S3C2410_GPC(0),
.owner = THIS_MODULE,
.label = "GPIOC",
.ngpio = 16,
},
}, {
.chip = {
.base = S3C2410_GPD(0),
.owner = THIS_MODULE,
.label = "GPIOD",
.ngpio = 16,
},
}, {
.chip = {
.base = S3C2410_GPE(0),
.label = "GPIOE",
.owner = THIS_MODULE,
.ngpio = 16,
},
}, {
.chip = {
.base = S3C2410_GPF(0),
.owner = THIS_MODULE,
.label = "GPIOF",
.ngpio = 8,
.to_irq = s3c24xx_gpiolib_fbank_to_irq,
},
}, {
.irq_base = IRQ_EINT8,
.chip = {
.base = S3C2410_GPG(0),
.owner = THIS_MODULE,
.label = "GPIOG",
.ngpio = 16,
.to_irq = samsung_gpiolib_to_irq,
},
}, {
.chip = {
.base = S3C2410_GPH(0),
.owner = THIS_MODULE,
.label = "GPIOH",
.ngpio = 11,
},
},
/* GPIOS for the S3C2443 and later devices. */
{
.base = S3C2440_GPJCON,
.chip = {
.base = S3C2410_GPJ(0),
.owner = THIS_MODULE,
.label = "GPIOJ",
.ngpio = 16,
},
}, {
.base = S3C2443_GPKCON,
.chip = {
.base = S3C2410_GPK(0),
.owner = THIS_MODULE,
.label = "GPIOK",
.ngpio = 16,
},
}, {
.base = S3C2443_GPLCON,
.chip = {
.base = S3C2410_GPL(0),
.owner = THIS_MODULE,
.label = "GPIOL",
.ngpio = 15,
},
}, {
.base = S3C2443_GPMCON,
.chip = {
.base = S3C2410_GPM(0),
.owner = THIS_MODULE,
.label = "GPIOM",
.ngpio = 2,
},
},
#endif
};
/*
* 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 samsung_gpio_chip s3c64xx_gpios_4bit[] = {
#ifdef CONFIG_PLAT_S3C64XX
{
.chip = {
.base = S3C64XX_GPA(0),
.ngpio = S3C64XX_GPIO_A_NR,
.label = "GPA",
},
}, {
.chip = {
.base = S3C64XX_GPB(0),
.ngpio = S3C64XX_GPIO_B_NR,
.label = "GPB",
},
}, {
.chip = {
.base = S3C64XX_GPC(0),
.ngpio = S3C64XX_GPIO_C_NR,
.label = "GPC",
},
}, {
.chip = {
.base = S3C64XX_GPD(0),
.ngpio = S3C64XX_GPIO_D_NR,
.label = "GPD",
},
}, {
.config = &samsung_gpio_cfgs[0],
.chip = {
.base = S3C64XX_GPE(0),
.ngpio = S3C64XX_GPIO_E_NR,
.label = "GPE",
},
}, {
.base = S3C64XX_GPG_BASE,
.chip = {
.base = S3C64XX_GPG(0),
.ngpio = S3C64XX_GPIO_G_NR,
.label = "GPG",
},
}, {
.base = S3C64XX_GPM_BASE,
.config = &samsung_gpio_cfgs[1],
.chip = {
.base = S3C64XX_GPM(0),
.ngpio = S3C64XX_GPIO_M_NR,
.label = "GPM",
.to_irq = s3c64xx_gpiolib_mbank_to_irq,
},
},
#endif
};
static struct samsung_gpio_chip s3c64xx_gpios_4bit2[] = {
#ifdef CONFIG_PLAT_S3C64XX
{
.base = S3C64XX_GPH_BASE + 0x4,
.chip = {
.base = S3C64XX_GPH(0),
.ngpio = S3C64XX_GPIO_H_NR,
.label = "GPH",
},
}, {
.base = S3C64XX_GPK_BASE + 0x4,
.config = &samsung_gpio_cfgs[0],
.chip = {
.base = S3C64XX_GPK(0),
.ngpio = S3C64XX_GPIO_K_NR,
.label = "GPK",
},
}, {
.base = S3C64XX_GPL_BASE + 0x4,
.config = &samsung_gpio_cfgs[1],
.chip = {
.base = S3C64XX_GPL(0),
.ngpio = S3C64XX_GPIO_L_NR,
.label = "GPL",
.to_irq = s3c64xx_gpiolib_lbank_to_irq,
},
},
#endif
};
static struct samsung_gpio_chip s3c64xx_gpios_2bit[] = {
#ifdef CONFIG_PLAT_S3C64XX
{
.base = S3C64XX_GPF_BASE,
.config = &samsung_gpio_cfgs[6],
.chip = {
.base = S3C64XX_GPF(0),
.ngpio = S3C64XX_GPIO_F_NR,
.label = "GPF",
},
}, {
.config = &samsung_gpio_cfgs[7],
.chip = {
.base = S3C64XX_GPI(0),
.ngpio = S3C64XX_GPIO_I_NR,
.label = "GPI",
},
}, {
.config = &samsung_gpio_cfgs[7],
.chip = {
.base = S3C64XX_GPJ(0),
.ngpio = S3C64XX_GPIO_J_NR,
.label = "GPJ",
},
}, {
.config = &samsung_gpio_cfgs[6],
.chip = {
.base = S3C64XX_GPO(0),
.ngpio = S3C64XX_GPIO_O_NR,
.label = "GPO",
},
}, {
.config = &samsung_gpio_cfgs[6],
.chip = {
.base = S3C64XX_GPP(0),
.ngpio = S3C64XX_GPIO_P_NR,
.label = "GPP",
},
}, {
.config = &samsung_gpio_cfgs[6],
.chip = {
.base = S3C64XX_GPQ(0),
.ngpio = S3C64XX_GPIO_Q_NR,
.label = "GPQ",
},
}, {
.base = S3C64XX_GPN_BASE,
.irq_base = IRQ_EINT(0),
.config = &samsung_gpio_cfgs[5],
.chip = {
.base = S3C64XX_GPN(0),
.ngpio = S3C64XX_GPIO_N_NR,
.label = "GPN",
.to_irq = samsung_gpiolib_to_irq,
},
},
#endif
};
/*
* S5P6440 GPIO bank summary:
*
* Bank GPIOs Style SlpCon ExtInt Group
* A 6 4Bit Yes 1
* B 7 4Bit Yes 1
* C 8 4Bit Yes 2
* F 2 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
* N 16 2Bit No IRQ_EINT
* P 8 2Bit Yes 8
* R 15 4Bit[2] Yes 8
*/
static struct samsung_gpio_chip s5p6440_gpios_4bit[] = {
#ifdef CONFIG_CPU_S5P6440
{
.chip = {
.base = S5P6440_GPA(0),
.ngpio = S5P6440_GPIO_A_NR,
.label = "GPA",
},
}, {
.chip = {
.base = S5P6440_GPB(0),
.ngpio = S5P6440_GPIO_B_NR,
.label = "GPB",
},
}, {
.chip = {
.base = S5P6440_GPC(0),
.ngpio = S5P6440_GPIO_C_NR,
.label = "GPC",
},
}, {
.base = S5P64X0_GPG_BASE,
.chip = {
.base = S5P6440_GPG(0),
.ngpio = S5P6440_GPIO_G_NR,
.label = "GPG",
},
},
#endif
};
static struct samsung_gpio_chip s5p6440_gpios_4bit2[] = {
#ifdef CONFIG_CPU_S5P6440
{
.base = S5P64X0_GPH_BASE + 0x4,
.chip = {
.base = S5P6440_GPH(0),
.ngpio = S5P6440_GPIO_H_NR,
.label = "GPH",
},
},
#endif
};
static struct samsung_gpio_chip s5p6440_gpios_rbank[] = {
#ifdef CONFIG_CPU_S5P6440
{
.base = S5P64X0_GPR_BASE + 0x4,
.config = &s5p64x0_gpio_cfg_rbank,
.chip = {
.base = S5P6440_GPR(0),
.ngpio = S5P6440_GPIO_R_NR,
.label = "GPR",
},
},
#endif
};
static struct samsung_gpio_chip s5p6440_gpios_2bit[] = {
#ifdef CONFIG_CPU_S5P6440
{
.base = S5P64X0_GPF_BASE,
.config = &samsung_gpio_cfgs[6],
.chip = {
.base = S5P6440_GPF(0),
.ngpio = S5P6440_GPIO_F_NR,
.label = "GPF",
},
}, {
.base = S5P64X0_GPI_BASE,
.config = &samsung_gpio_cfgs[4],
.chip = {
.base = S5P6440_GPI(0),
.ngpio = S5P6440_GPIO_I_NR,
.label = "GPI",
},
}, {
.base = S5P64X0_GPJ_BASE,
.config = &samsung_gpio_cfgs[4],
.chip = {
.base = S5P6440_GPJ(0),
.ngpio = S5P6440_GPIO_J_NR,
.label = "GPJ",
},
}, {
.base = S5P64X0_GPN_BASE,
.config = &samsung_gpio_cfgs[5],
.chip = {
.base = S5P6440_GPN(0),
.ngpio = S5P6440_GPIO_N_NR,
.label = "GPN",
},
}, {
.base = S5P64X0_GPP_BASE,
.config = &samsung_gpio_cfgs[6],
.chip = {
.base = S5P6440_GPP(0),
.ngpio = S5P6440_GPIO_P_NR,
.label = "GPP",
},
},
#endif
};
/*
* S5P6450 GPIO bank summary:
*
* Bank GPIOs Style SlpCon ExtInt Group
* A 6 4Bit Yes 1
* B 7 4Bit Yes 1
* C 8 4Bit Yes 2
* D 8 4Bit Yes None
* F 2 2Bit Yes None
* G 14 4Bit[2] Yes 5
* H 10 4Bit[2] Yes 6
* I 16 2Bit Yes None
* J 12 2Bit Yes None
* K 5 4Bit Yes None
* N 16 2Bit No IRQ_EINT
* P 11 2Bit Yes 8
* Q 14 2Bit Yes None
* R 15 4Bit[2] Yes None
* S 8 2Bit Yes None
*
* [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 samsung_gpio_chip s5p6450_gpios_4bit[] = {
#ifdef CONFIG_CPU_S5P6450
{
.chip = {
.base = S5P6450_GPA(0),
.ngpio = S5P6450_GPIO_A_NR,
.label = "GPA",
},
}, {
.chip = {
.base = S5P6450_GPB(0),
.ngpio = S5P6450_GPIO_B_NR,
.label = "GPB",
},
}, {
.chip = {
.base = S5P6450_GPC(0),
.ngpio = S5P6450_GPIO_C_NR,
.label = "GPC",
},
}, {
.chip = {
.base = S5P6450_GPD(0),
.ngpio = S5P6450_GPIO_D_NR,
.label = "GPD",
},
}, {
.base = S5P6450_GPK_BASE,
.chip = {
.base = S5P6450_GPK(0),
.ngpio = S5P6450_GPIO_K_NR,
.label = "GPK",
},
},
#endif
};
static struct samsung_gpio_chip s5p6450_gpios_4bit2[] = {
#ifdef CONFIG_CPU_S5P6450
{
.base = S5P64X0_GPG_BASE + 0x4,
.chip = {
.base = S5P6450_GPG(0),
.ngpio = S5P6450_GPIO_G_NR,
.label = "GPG",
},
}, {
.base = S5P64X0_GPH_BASE + 0x4,
.chip = {
.base = S5P6450_GPH(0),
.ngpio = S5P6450_GPIO_H_NR,
.label = "GPH",
},
},
#endif
};
static struct samsung_gpio_chip s5p6450_gpios_rbank[] = {
#ifdef CONFIG_CPU_S5P6450
{
.base = S5P64X0_GPR_BASE + 0x4,
.config = &s5p64x0_gpio_cfg_rbank,
.chip = {
.base = S5P6450_GPR(0),
.ngpio = S5P6450_GPIO_R_NR,
.label = "GPR",
},
},
#endif
};
static struct samsung_gpio_chip s5p6450_gpios_2bit[] = {
#ifdef CONFIG_CPU_S5P6450
{
.base = S5P64X0_GPF_BASE,
.config = &samsung_gpio_cfgs[6],
.chip = {
.base = S5P6450_GPF(0),
.ngpio = S5P6450_GPIO_F_NR,
.label = "GPF",
},
}, {
.base = S5P64X0_GPI_BASE,
.config = &samsung_gpio_cfgs[4],
.chip = {
.base = S5P6450_GPI(0),
.ngpio = S5P6450_GPIO_I_NR,
.label = "GPI",
},
}, {
.base = S5P64X0_GPJ_BASE,
.config = &samsung_gpio_cfgs[4],
.chip = {
.base = S5P6450_GPJ(0),
.ngpio = S5P6450_GPIO_J_NR,
.label = "GPJ",
},
}, {
.base = S5P64X0_GPN_BASE,
.config = &samsung_gpio_cfgs[5],
.chip = {
.base = S5P6450_GPN(0),
.ngpio = S5P6450_GPIO_N_NR,
.label = "GPN",
},
}, {
.base = S5P64X0_GPP_BASE,
.config = &samsung_gpio_cfgs[6],
.chip = {
.base = S5P6450_GPP(0),
.ngpio = S5P6450_GPIO_P_NR,
.label = "GPP",
},
}, {
.base = S5P6450_GPQ_BASE,
.config = &samsung_gpio_cfgs[5],
.chip = {
.base = S5P6450_GPQ(0),
.ngpio = S5P6450_GPIO_Q_NR,
.label = "GPQ",
},
}, {
.base = S5P6450_GPS_BASE,
.config = &samsung_gpio_cfgs[6],
.chip = {
.base = S5P6450_GPS(0),
.ngpio = S5P6450_GPIO_S_NR,
.label = "GPS",
},
},
#endif
};
/*
* 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 samsung_gpio_chip s5pc100_gpios_4bit[] = {
#ifdef CONFIG_CPU_S5PC100
{
.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",
},
}, {
.chip = {
.base = S5PC100_GPK0(0),
.ngpio = S5PC100_GPIO_K0_NR,
.label = "GPK0",
},
}, {
.chip = {
.base = S5PC100_GPK1(0),
.ngpio = S5PC100_GPIO_K1_NR,
.label = "GPK1",
},
}, {
.chip = {
.base = S5PC100_GPK2(0),
.ngpio = S5PC100_GPIO_K2_NR,
.label = "GPK2",
},
}, {
.chip = {
.base = S5PC100_GPK3(0),
.ngpio = S5PC100_GPIO_K3_NR,
.label = "GPK3",
},
}, {
.chip = {
.base = S5PC100_GPL0(0),
.ngpio = S5PC100_GPIO_L0_NR,
.label = "GPL0",
},
}, {
.chip = {
.base = S5PC100_GPL1(0),
.ngpio = S5PC100_GPIO_L1_NR,
.label = "GPL1",
},
}, {
.chip = {
.base = S5PC100_GPL2(0),
.ngpio = S5PC100_GPIO_L2_NR,
.label = "GPL2",
},
}, {
.chip = {
.base = S5PC100_GPL3(0),
.ngpio = S5PC100_GPIO_L3_NR,
.label = "GPL3",
},
}, {
.chip = {
.base = S5PC100_GPL4(0),
.ngpio = S5PC100_GPIO_L4_NR,
.label = "GPL4",
},
}, {
.base = (S5P_VA_GPIO + 0xC00),
.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),
.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),
.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),
.irq_base = IRQ_EINT(24),
.chip = {
.base = S5PC100_GPH3(0),
.ngpio = S5PC100_GPIO_H3_NR,
.label = "GPH3",
.to_irq = samsung_gpiolib_to_irq,
},
},
#endif
};
/*
* Followings are the gpio banks in S5PV210/S5PC110
*
* The 'config' member when left to NULL, is initialized to the default
* structure samsung_gpio_cfgs[3] in the init function below.
*
* The 'base' member is also initialized in the init function below.
* Note: The initialization of 'base' member of samsung_gpio_chip structure
* uses the above macro and depends on the banks being listed in order here.
*/
static struct samsung_gpio_chip s5pv210_gpios_4bit[] = {
#ifdef CONFIG_CPU_S5PV210
{
.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",
},
}, {
.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",
},
}, {
.chip = {
.base = S5PV210_MP01(0),
.ngpio = S5PV210_GPIO_MP01_NR,
.label = "MP01",
},
}, {
.chip = {
.base = S5PV210_MP02(0),
.ngpio = S5PV210_GPIO_MP02_NR,
.label = "MP02",
},
}, {
.chip = {
.base = S5PV210_MP03(0),
.ngpio = S5PV210_GPIO_MP03_NR,
.label = "MP03",
},
}, {
.chip = {
.base = S5PV210_MP04(0),
.ngpio = S5PV210_GPIO_MP04_NR,
.label = "MP04",
},
}, {
.chip = {
.base = S5PV210_MP05(0),
.ngpio = S5PV210_GPIO_MP05_NR,
.label = "MP05",
},
}, {
.base = (S5P_VA_GPIO + 0xC00),
.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),
.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),
.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),
.irq_base = IRQ_EINT(24),
.chip = {
.base = S5PV210_GPH3(0),
.ngpio = S5PV210_GPIO_H3_NR,
.label = "GPH3",
.to_irq = samsung_gpiolib_to_irq,
},
},
#endif
};
/*
* Followings are the gpio banks in EXYNOS4210
*
* The 'config' member when left to NULL, is initialized to the default
* structure samsung_gpio_cfgs[3] in the init function below.
*
* The 'base' member is also initialized in the init function below.
* Note: The initialization of 'base' member of samsung_gpio_chip structure
* uses the above macro and depends on the banks being listed in order here.
*/
static struct samsung_gpio_chip exynos4_gpios_1[] = {
#ifdef CONFIG_ARCH_EXYNOS4
{
.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",
},
},
#endif
};
static struct samsung_gpio_chip exynos4_gpios_2[] = {
#ifdef CONFIG_ARCH_EXYNOS4
{
.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 = &samsung_gpio_cfgs[8],
.chip = {
.base = EXYNOS4_GPY0(0),
.ngpio = EXYNOS4_GPIO_Y0_NR,
.label = "GPY0",
},
}, {
.config = &samsung_gpio_cfgs[8],
.chip = {
.base = EXYNOS4_GPY1(0),
.ngpio = EXYNOS4_GPIO_Y1_NR,
.label = "GPY1",
},
}, {
.config = &samsung_gpio_cfgs[8],
.chip = {
.base = EXYNOS4_GPY2(0),
.ngpio = EXYNOS4_GPIO_Y2_NR,
.label = "GPY2",
},
}, {
.config = &samsung_gpio_cfgs[8],
.chip = {
.base = EXYNOS4_GPY3(0),
.ngpio = EXYNOS4_GPIO_Y3_NR,
.label = "GPY3",
},
}, {
.config = &samsung_gpio_cfgs[8],
.chip = {
.base = EXYNOS4_GPY4(0),
.ngpio = EXYNOS4_GPIO_Y4_NR,
.label = "GPY4",
},
}, {
.config = &samsung_gpio_cfgs[8],
.chip = {
.base = EXYNOS4_GPY5(0),
.ngpio = EXYNOS4_GPIO_Y5_NR,
.label = "GPY5",
},
}, {
.config = &samsung_gpio_cfgs[8],
.chip = {
.base = EXYNOS4_GPY6(0),
.ngpio = EXYNOS4_GPIO_Y6_NR,
.label = "GPY6",
},
}, {
.base = (S5P_VA_GPIO2 + 0xC00),
.config = &samsung_gpio_cfgs[9],
.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 = &samsung_gpio_cfgs[9],
.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 = &samsung_gpio_cfgs[9],
.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 = &samsung_gpio_cfgs[9],
.irq_base = IRQ_EINT(24),
.chip = {
.base = EXYNOS4_GPX3(0),
.ngpio = EXYNOS4_GPIO_X3_NR,
.label = "GPX3",
.to_irq = samsung_gpiolib_to_irq,
},
},
#endif
};
static struct samsung_gpio_chip exynos4_gpios_3[] = {
#ifdef CONFIG_ARCH_EXYNOS4
{
.chip = {
.base = EXYNOS4_GPZ(0),
.ngpio = EXYNOS4_GPIO_Z_NR,
.label = "GPZ",
},
},
#endif
};
/* TODO: cleanup soc_is_* */
static __init int samsung_gpiolib_init(void)
{
struct samsung_gpio_chip *chip;
int i, nr_chips;
int group = 0;
samsung_gpiolib_set_cfg(samsung_gpio_cfgs, ARRAY_SIZE(samsung_gpio_cfgs));
if (soc_is_s3c24xx()) {
s3c24xx_gpiolib_add_chips(s3c24xx_gpios,
ARRAY_SIZE(s3c24xx_gpios), S3C24XX_VA_GPIO);
} else if (soc_is_s3c64xx()) {
samsung_gpiolib_add_2bit_chips(s3c64xx_gpios_2bit,
ARRAY_SIZE(s3c64xx_gpios_2bit),
S3C64XX_VA_GPIO + 0xE0, 0x20);
samsung_gpiolib_add_4bit_chips(s3c64xx_gpios_4bit,
ARRAY_SIZE(s3c64xx_gpios_4bit),
S3C64XX_VA_GPIO);
samsung_gpiolib_add_4bit2_chips(s3c64xx_gpios_4bit2,
ARRAY_SIZE(s3c64xx_gpios_4bit2));
} else if (soc_is_s5p6440()) {
samsung_gpiolib_add_2bit_chips(s5p6440_gpios_2bit,
ARRAY_SIZE(s5p6440_gpios_2bit), NULL, 0x0);
samsung_gpiolib_add_4bit_chips(s5p6440_gpios_4bit,
ARRAY_SIZE(s5p6440_gpios_4bit), S5P_VA_GPIO);
samsung_gpiolib_add_4bit2_chips(s5p6440_gpios_4bit2,
ARRAY_SIZE(s5p6440_gpios_4bit2));
s5p64x0_gpiolib_add_rbank(s5p6440_gpios_rbank,
ARRAY_SIZE(s5p6440_gpios_rbank));
} else if (soc_is_s5p6450()) {
samsung_gpiolib_add_2bit_chips(s5p6450_gpios_2bit,
ARRAY_SIZE(s5p6450_gpios_2bit), NULL, 0x0);
samsung_gpiolib_add_4bit_chips(s5p6450_gpios_4bit,
ARRAY_SIZE(s5p6450_gpios_4bit), S5P_VA_GPIO);
samsung_gpiolib_add_4bit2_chips(s5p6450_gpios_4bit2,
ARRAY_SIZE(s5p6450_gpios_4bit2));
s5p64x0_gpiolib_add_rbank(s5p6450_gpios_rbank,
ARRAY_SIZE(s5p6450_gpios_rbank));
} else if (soc_is_s5pc100()) {
group = 0;
chip = s5pc100_gpios_4bit;
nr_chips = ARRAY_SIZE(s5pc100_gpios_4bit);
for (i = 0; i < nr_chips; i++, chip++) {
if (!chip->config) {
chip->config = &samsung_gpio_cfgs[3];
chip->group = group++;
}
}
samsung_gpiolib_add_4bit_chips(s5pc100_gpios_4bit, nr_chips, S5P_VA_GPIO);
#if defined(CONFIG_CPU_S5PC100) && defined(CONFIG_S5P_GPIO_INT)
s5p_register_gpioint_bank(IRQ_GPIOINT, 0, S5P_GPIOINT_GROUP_MAXNR);
#endif
} else if (soc_is_s5pv210()) {
group = 0;
chip = s5pv210_gpios_4bit;
nr_chips = ARRAY_SIZE(s5pv210_gpios_4bit);
for (i = 0; i < nr_chips; i++, chip++) {
if (!chip->config) {
chip->config = &samsung_gpio_cfgs[3];
chip->group = group++;
}
}
samsung_gpiolib_add_4bit_chips(s5pv210_gpios_4bit, nr_chips, S5P_VA_GPIO);
#if defined(CONFIG_CPU_S5PV210) && defined(CONFIG_S5P_GPIO_INT)
s5p_register_gpioint_bank(IRQ_GPIOINT, 0, S5P_GPIOINT_GROUP_MAXNR);
#endif
} else if (soc_is_exynos4210()) {
group = 0;
/* gpio part1 */
chip = exynos4_gpios_1;
nr_chips = ARRAY_SIZE(exynos4_gpios_1);
for (i = 0; i < nr_chips; i++, chip++) {
if (!chip->config) {
chip->config = &exynos4_gpio_cfg;
chip->group = group++;
}
}
samsung_gpiolib_add_4bit_chips(exynos4_gpios_1, nr_chips, S5P_VA_GPIO1);
/* gpio part2 */
chip = exynos4_gpios_2;
nr_chips = ARRAY_SIZE(exynos4_gpios_2);
for (i = 0; i < nr_chips; i++, chip++) {
if (!chip->config) {
chip->config = &exynos4_gpio_cfg;
chip->group = group++;
}
}
samsung_gpiolib_add_4bit_chips(exynos4_gpios_2, nr_chips, S5P_VA_GPIO2);
/* gpio part3 */
chip = exynos4_gpios_3;
nr_chips = ARRAY_SIZE(exynos4_gpios_3);
for (i = 0; i < nr_chips; i++, chip++) {
if (!chip->config) {
chip->config = &exynos4_gpio_cfg;
chip->group = group++;
}
}
samsung_gpiolib_add_4bit_chips(exynos4_gpios_3, nr_chips, S5P_VA_GPIO3);
#if defined(CONFIG_CPU_EXYNOS4210) && defined(CONFIG_S5P_GPIO_INT)
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);
#endif
} else {
WARN(1, "Unknown SoC in gpio-samsung, no GPIOs added\n");
return -ENODEV;
}
return 0;
}
core_initcall(samsung_gpiolib_init);
int s3c_gpio_cfgpin(unsigned int pin, unsigned int config)
{
struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
unsigned long flags;
int offset;
int ret;
if (!chip)
return -EINVAL;
offset = pin - chip->chip.base;
samsung_gpio_lock(chip, flags);
ret = samsung_gpio_do_setcfg(chip, offset, config);
samsung_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, samsung_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 samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
unsigned long flags;
unsigned ret = 0;
int offset;
if (chip) {
offset = pin - chip->chip.base;
samsung_gpio_lock(chip, flags);
ret = samsung_gpio_do_getcfg(chip, offset);
samsung_gpio_unlock(chip, flags);
}
return ret;
}
EXPORT_SYMBOL(s3c_gpio_getcfg);
int s3c_gpio_setpull(unsigned int pin, samsung_gpio_pull_t pull)
{
struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
unsigned long flags;
int offset, ret;
if (!chip)
return -EINVAL;
offset = pin - chip->chip.base;
samsung_gpio_lock(chip, flags);
ret = samsung_gpio_do_setpull(chip, offset, pull);
samsung_gpio_unlock(chip, flags);
return ret;
}
EXPORT_SYMBOL(s3c_gpio_setpull);
samsung_gpio_pull_t s3c_gpio_getpull(unsigned int pin)
{
struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
unsigned long flags;
int offset;
u32 pup = 0;
if (chip) {
offset = pin - chip->chip.base;
samsung_gpio_lock(chip, flags);
pup = samsung_gpio_do_getpull(chip, offset);
samsung_gpio_unlock(chip, flags);
}
return (__force samsung_gpio_pull_t)pup;
}
EXPORT_SYMBOL(s3c_gpio_getpull);
/* 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 samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
unsigned long offs = pin - chip->chip.base;
return __raw_readl(chip->base + 0x04) & (1 << offs);
}
EXPORT_SYMBOL(s3c2410_gpio_getpin);
#ifdef CONFIG_S5P_GPIO_DRVSTR
s5p_gpio_drvstr_t s5p_gpio_get_drvstr(unsigned int pin)
{
struct samsung_gpio_chip *chip = samsung_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 samsung_gpio_chip *chip = samsung_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 */
#ifdef CONFIG_PLAT_S3C24XX
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);
#endif
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