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path: root/drivers/gpio/gpio-samsung.c
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Diffstat (limited to 'drivers/gpio/gpio-samsung.c')
-rw-r--r--drivers/gpio/gpio-samsung.c1328
1 files changed, 0 insertions, 1328 deletions
diff --git a/drivers/gpio/gpio-samsung.c b/drivers/gpio/gpio-samsung.c
deleted file mode 100644
index 7c288ba4d..000000000
--- a/drivers/gpio/gpio-samsung.c
+++ /dev/null
@@ -1,1328 +0,0 @@
-/*
- * 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/device.h>
-#include <linux/ioport.h>
-#include <linux/of.h>
-#include <linux/slab.h>
-#include <linux/of_address.h>
-
-#include <asm/irq.h>
-
-#include <mach/map.h>
-#include <mach/regs-gpio.h>
-#include <mach/gpio-samsung.h>
-
-#include <plat/cpu.h>
-#include <plat/gpio-core.h>
-#include <plat/gpio-cfg.h>
-#include <plat/gpio-cfg-helpers.h>
-#include <plat/pm.h>
-
-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);
-}
-
-/*
- * 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 which
- * 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
-
-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 samsung_gpio_cfgs[] = {
- [0] = {
- .cfg_eint = 0x0,
- },
- [1] = {
- .cfg_eint = 0x3,
- },
- [2] = {
- .cfg_eint = 0x7,
- },
- [3] = {
- .cfg_eint = 0xF,
- },
- [4] = {
- .cfg_eint = 0x0,
- .set_config = samsung_gpio_setcfg_2bit,
- .get_config = samsung_gpio_getcfg_2bit,
- },
- [5] = {
- .cfg_eint = 0x2,
- .set_config = samsung_gpio_setcfg_2bit,
- .get_config = samsung_gpio_getcfg_2bit,
- },
- [6] = {
- .cfg_eint = 0x3,
- .set_config = samsung_gpio_setcfg_2bit,
- .get_config = samsung_gpio_getcfg_2bit,
- },
- [7] = {
- .set_config = samsung_gpio_setcfg_2bit,
- .get_config = samsung_gpio_getcfg_2bit,
- },
-};
-
-/*
- * 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);
- if (ourchip->bitmap_gpio_int & BIT(offset))
- con |= 0xf << con_4bit_shift(offset);
- else
- con &= ~(0xf << con_4bit_shift(offset));
- __raw_writel(con, base + GPIOCON_OFF);
-
- pr_debug("%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);
-
- pr_debug("%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);
-
- pr_debug("%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);
-
- pr_debug("%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
-
-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)
- pr_err("gpio: %s has missing PM functions\n",
- gc->label);
- } else
- pr_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);
-
- chip->bitmap_gpio_int = 0;
-
- 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);
- }
-}
-
-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) {
- if (soc_is_s3c2412())
- return IRQ_EINT0_2412 + offset;
- else
- return IRQ_EINT0 + offset;
- }
-
- if (offset < 8)
- return IRQ_EINT4 + offset - 4;
-
- return -EINVAL;
-}
-#endif
-
-#ifdef CONFIG_ARCH_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 = 27,
- .direction_input = s3c24xx_gpiolib_banka_input,
- .direction_output = s3c24xx_gpiolib_banka_output,
- },
- }, {
- .chip = {
- .base = S3C2410_GPB(0),
- .owner = THIS_MODULE,
- .label = "GPIOB",
- .ngpio = 11,
- },
- }, {
- .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 = 15,
- },
- },
- /* 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_ARCH_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_ARCH_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_ARCH_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
-};
-
-/* TODO: cleanup soc_is_* */
-static __init int samsung_gpiolib_init(void)
-{
- /*
- * Currently there are two drivers that can provide GPIO support for
- * Samsung SoCs. For device tree enabled platforms, the new
- * pinctrl-samsung driver is used, providing both GPIO and pin control
- * interfaces. For legacy (non-DT) platforms this driver is used.
- */
- if (of_have_populated_dt())
- return -ENODEV;
-
- 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 {
- 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);
-
-#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