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Diffstat (limited to 'arch/arm/mach-s3c/gpio-samsung.c')
-rw-r--r--arch/arm/mach-s3c/gpio-samsung.c443
1 files changed, 3 insertions, 440 deletions
diff --git a/arch/arm/mach-s3c/gpio-samsung.c b/arch/arm/mach-s3c/gpio-samsung.c
index b7fc7c41309c..87daaa09e2c3 100644
--- a/arch/arm/mach-s3c/gpio-samsung.c
+++ b/arch/arm/mach-s3c/gpio-samsung.c
@@ -35,10 +35,9 @@
#include "gpio-core.h"
#include "gpio-cfg.h"
#include "gpio-cfg-helpers.h"
-#include "hardware-s3c24xx.h"
#include "pm.h"
-int samsung_gpio_setpull_updown(struct samsung_gpio_chip *chip,
+static int samsung_gpio_setpull_updown(struct samsung_gpio_chip *chip,
unsigned int off, samsung_gpio_pull_t pull)
{
void __iomem *reg = chip->base + 0x08;
@@ -53,7 +52,7 @@ int samsung_gpio_setpull_updown(struct samsung_gpio_chip *chip,
return 0;
}
-samsung_gpio_pull_t samsung_gpio_getpull_updown(struct samsung_gpio_chip *chip,
+static samsung_gpio_pull_t samsung_gpio_getpull_updown(struct samsung_gpio_chip *chip,
unsigned int off)
{
void __iomem *reg = chip->base + 0x08;
@@ -66,113 +65,6 @@ samsung_gpio_pull_t samsung_gpio_getpull_updown(struct samsung_gpio_chip *chip,
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)
{
@@ -289,70 +181,6 @@ static unsigned samsung_gpio_getcfg_4bit(struct samsung_gpio_chip *chip,
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)
{
@@ -368,18 +196,6 @@ static void __init samsung_gpiolib_set_cfg(struct samsung_gpio_cfg *chipcfg,
}
}
-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,
@@ -614,44 +430,6 @@ static int samsung_gpiolib_4bit2_output(struct gpio_chip *chip,
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)
{
@@ -756,33 +534,6 @@ static void __init samsung_gpiolib_add(struct samsung_gpio_chip *chip)
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)
@@ -865,24 +616,6 @@ int samsung_gpiolib_to_irq(struct gpio_chip *chip, unsigned int offset)
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;
@@ -892,109 +625,6 @@ 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:
@@ -1023,7 +653,6 @@ struct samsung_gpio_chip s3c24xx_gpios[] = {
*/
static struct samsung_gpio_chip s3c64xx_gpios_4bit[] = {
-#ifdef CONFIG_ARCH_S3C64XX
{
.chip = {
.base = S3C64XX_GPA(0),
@@ -1072,11 +701,9 @@ static struct samsung_gpio_chip s3c64xx_gpios_4bit[] = {
.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 = {
@@ -1102,11 +729,9 @@ static struct samsung_gpio_chip s3c64xx_gpios_4bit2[] = {
.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],
@@ -1161,7 +786,6 @@ static struct samsung_gpio_chip s3c64xx_gpios_2bit[] = {
.to_irq = samsung_gpiolib_to_irq,
},
},
-#endif
};
/* TODO: cleanup soc_is_* */
@@ -1176,12 +800,7 @@ static __init int samsung_gpiolib_init(void)
if (of_have_populated_dt())
return 0;
- if (soc_is_s3c24xx()) {
- samsung_gpiolib_set_cfg(samsung_gpio_cfgs,
- ARRAY_SIZE(samsung_gpio_cfgs));
- s3c24xx_gpiolib_add_chips(s3c24xx_gpios,
- ARRAY_SIZE(s3c24xx_gpios), S3C24XX_VA_GPIO);
- } else if (soc_is_s3c64xx()) {
+ if (soc_is_s3c64xx()) {
samsung_gpiolib_set_cfg(samsung_gpio_cfgs,
ARRAY_SIZE(samsung_gpio_cfgs));
samsung_gpiolib_add_2bit_chips(s3c64xx_gpios_2bit,
@@ -1249,25 +868,6 @@ int s3c_gpio_cfgall_range(unsigned int start, unsigned int nr,
}
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);
@@ -1286,40 +886,3 @@ int s3c_gpio_setpull(unsigned int pin, samsung_gpio_pull_t pull)
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
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