/* linux/arch/arm/plat-s3c24xx/gpiolib.c
*
- * Copyright (c) 2008 Simtec Electronics
+ * Copyright (c) 2008-2010 Simtec Electronics
* http://armlinux.simtec.co.uk/
* Ben Dooks <ben@simtec.co.uk>
*
#include <linux/init.h>
#include <linux/module.h>
#include <linux/interrupt.h>
+#include <linux/sysdev.h>
#include <linux/ioport.h>
#include <linux/io.h>
#include <linux/gpio.h>
-#include <asm/arch/hardware.h>
+#include <plat/gpio-core.h>
+#include <plat/gpio-cfg.h>
+#include <plat/gpio-cfg-helpers.h>
+#include <mach/hardware.h>
#include <asm/irq.h>
+#include <plat/pm.h>
-#include <asm/arch/regs-gpio.h>
-
-struct s3c24xx_gpio_chip {
- struct gpio_chip chip;
- void __iomem *base;
-};
-
-static inline struct s3c24xx_gpio_chip *to_s3c_chip(struct gpio_chip *gpc)
-{
- return container_of(gpc, struct s3c24xx_gpio_chip, chip);
-}
-
-/* these routines are exported for use by other parts of the platform
- * and system support, but are not intended to be used directly by the
- * drivers themsevles.
- */
-
-int s3c24xx_gpiolib_input(struct gpio_chip *chip, unsigned offset)
-{
- struct s3c24xx_gpio_chip *ourchip = to_s3c_chip(chip);
- void __iomem *base = ourchip->base;
- unsigned long flags;
- unsigned long con;
-
- local_irq_save(flags);
-
- con = __raw_readl(base + 0x00);
- con &= ~(3 << (offset * 2));
- con |= (S3C2410_GPIO_OUTPUT & 0xf) << (offset * 2);
-
- __raw_writel(con, base + 0x00);
-
- local_irq_restore(flags);
- return 0;
-}
-
-int s3c24xx_gpiolib_output(struct gpio_chip *chip,
- unsigned offset, int value)
-{
- struct s3c24xx_gpio_chip *ourchip = to_s3c_chip(chip);
- void __iomem *base = ourchip->base;
- unsigned long flags;
- unsigned long dat;
- unsigned long con;
-
- local_irq_save(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 |= (S3C2410_GPIO_OUTPUT & 0xf) << (offset * 2);
-
- __raw_writel(con, base + 0x00);
- __raw_writel(dat, base + 0x04);
-
- local_irq_restore(flags);
- return 0;
-}
-
-void s3c24xx_gpiolib_set(struct gpio_chip *chip, unsigned offset, int value)
-{
- struct s3c24xx_gpio_chip *ourchip = to_s3c_chip(chip);
- void __iomem *base = ourchip->base;
- unsigned long flags;
- unsigned long dat;
-
- local_irq_save(flags);
-
- dat = __raw_readl(base + 0x04);
- dat &= ~(1 << offset);
- if (value)
- dat |= 1 << offset;
- __raw_writel(dat, base + 0x04);
-
- local_irq_restore(flags);
-}
-
-int s3c24xx_gpiolib_get(struct gpio_chip *chip, unsigned offset)
-{
- struct s3c24xx_gpio_chip *ourchip = to_s3c_chip(chip);
- unsigned long val;
-
- val = __raw_readl(ourchip->base + 0x04);
- val >>= offset;
- val &= 1;
-
- return val;
-}
+#include <mach/regs-gpio.h>
static int s3c24xx_gpiolib_banka_input(struct gpio_chip *chip, unsigned offset)
{
static int s3c24xx_gpiolib_banka_output(struct gpio_chip *chip,
unsigned offset, int value)
{
- struct s3c24xx_gpio_chip *ourchip = to_s3c_chip(chip);
+ struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip);
void __iomem *base = ourchip->base;
unsigned long flags;
unsigned long dat;
return 0;
}
+static int s3c24xx_gpiolib_bankf_toirq(struct gpio_chip *chip, unsigned offset)
+{
+ if (offset < 4)
+ return IRQ_EINT0 + offset;
+
+ if (offset < 8)
+ return IRQ_EINT4 + offset - 4;
+
+ return -EINVAL;
+}
+
+static int s3c24xx_gpiolib_bankg_toirq(struct gpio_chip *chip, unsigned offset)
+{
+ return IRQ_EINT8 + offset;
+}
+
+static struct s3c_gpio_cfg s3c24xx_gpiocfg_banka = {
+ .set_config = s3c_gpio_setcfg_s3c24xx_a,
+ .get_config = s3c_gpio_getcfg_s3c24xx_a,
+};
+
+struct s3c_gpio_cfg s3c24xx_gpiocfg_default = {
+ .set_config = s3c_gpio_setcfg_s3c24xx,
+ .get_config = s3c_gpio_getcfg_s3c24xx,
+};
-struct s3c24xx_gpio_chip gpios[] = {
+struct s3c_gpio_chip s3c24xx_gpios[] = {
[0] = {
- .base = S3C24XX_GPIO_BASE(S3C2410_GPA0),
+ .base = S3C2410_GPACON,
+ .pm = __gpio_pm(&s3c_gpio_pm_1bit),
+ .config = &s3c24xx_gpiocfg_banka,
.chip = {
- .base = S3C2410_GPA0,
+ .base = S3C2410_GPA(0),
.owner = THIS_MODULE,
.label = "GPIOA",
.ngpio = 24,
.direction_input = s3c24xx_gpiolib_banka_input,
.direction_output = s3c24xx_gpiolib_banka_output,
- .set = s3c24xx_gpiolib_set,
- .get = s3c24xx_gpiolib_get,
},
},
[1] = {
- .base = S3C24XX_GPIO_BASE(S3C2410_GPB0),
+ .base = S3C2410_GPBCON,
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
.chip = {
- .base = S3C2410_GPB0,
+ .base = S3C2410_GPB(0),
.owner = THIS_MODULE,
.label = "GPIOB",
.ngpio = 16,
- .direction_input = s3c24xx_gpiolib_input,
- .direction_output = s3c24xx_gpiolib_output,
- .set = s3c24xx_gpiolib_set,
- .get = s3c24xx_gpiolib_get,
},
},
[2] = {
- .base = S3C24XX_GPIO_BASE(S3C2410_GPC0),
+ .base = S3C2410_GPCCON,
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
.chip = {
- .base = S3C2410_GPC0,
+ .base = S3C2410_GPC(0),
.owner = THIS_MODULE,
.label = "GPIOC",
.ngpio = 16,
- .direction_input = s3c24xx_gpiolib_input,
- .direction_output = s3c24xx_gpiolib_output,
- .set = s3c24xx_gpiolib_set,
- .get = s3c24xx_gpiolib_get,
},
},
[3] = {
- .base = S3C24XX_GPIO_BASE(S3C2410_GPD0),
+ .base = S3C2410_GPDCON,
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
.chip = {
- .base = S3C2410_GPD0,
+ .base = S3C2410_GPD(0),
.owner = THIS_MODULE,
.label = "GPIOD",
.ngpio = 16,
- .direction_input = s3c24xx_gpiolib_input,
- .direction_output = s3c24xx_gpiolib_output,
- .set = s3c24xx_gpiolib_set,
- .get = s3c24xx_gpiolib_get,
},
},
[4] = {
- .base = S3C24XX_GPIO_BASE(S3C2410_GPE0),
+ .base = S3C2410_GPECON,
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
.chip = {
- .base = S3C2410_GPE0,
+ .base = S3C2410_GPE(0),
.label = "GPIOE",
.owner = THIS_MODULE,
.ngpio = 16,
- .direction_input = s3c24xx_gpiolib_input,
- .direction_output = s3c24xx_gpiolib_output,
- .set = s3c24xx_gpiolib_set,
- .get = s3c24xx_gpiolib_get,
},
},
[5] = {
- .base = S3C24XX_GPIO_BASE(S3C2410_GPF0),
+ .base = S3C2410_GPFCON,
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
.chip = {
- .base = S3C2410_GPF0,
+ .base = S3C2410_GPF(0),
.owner = THIS_MODULE,
.label = "GPIOF",
.ngpio = 8,
- .direction_input = s3c24xx_gpiolib_input,
- .direction_output = s3c24xx_gpiolib_output,
- .set = s3c24xx_gpiolib_set,
- .get = s3c24xx_gpiolib_get,
+ .to_irq = s3c24xx_gpiolib_bankf_toirq,
},
},
[6] = {
- .base = S3C24XX_GPIO_BASE(S3C2410_GPG0),
+ .base = S3C2410_GPGCON,
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
.chip = {
- .base = S3C2410_GPG0,
+ .base = S3C2410_GPG(0),
.owner = THIS_MODULE,
.label = "GPIOG",
- .ngpio = 10,
- .direction_input = s3c24xx_gpiolib_input,
- .direction_output = s3c24xx_gpiolib_output,
- .set = s3c24xx_gpiolib_set,
- .get = s3c24xx_gpiolib_get,
+ .ngpio = 16,
+ .to_irq = s3c24xx_gpiolib_bankg_toirq,
+ },
+ }, {
+ .base = S3C2410_GPHCON,
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
+ .chip = {
+ .base = S3C2410_GPH(0),
+ .owner = THIS_MODULE,
+ .label = "GPIOH",
+ .ngpio = 11,
+ },
+ },
+ /* GPIOS for the S3C2443 and later devices. */
+ {
+ .base = S3C2440_GPJCON,
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
+ .chip = {
+ .base = S3C2410_GPJ(0),
+ .owner = THIS_MODULE,
+ .label = "GPIOJ",
+ .ngpio = 16,
+ },
+ }, {
+ .base = S3C2443_GPKCON,
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
+ .chip = {
+ .base = S3C2410_GPK(0),
+ .owner = THIS_MODULE,
+ .label = "GPIOK",
+ .ngpio = 16,
+ },
+ }, {
+ .base = S3C2443_GPLCON,
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
+ .chip = {
+ .base = S3C2410_GPL(0),
+ .owner = THIS_MODULE,
+ .label = "GPIOL",
+ .ngpio = 15,
+ },
+ }, {
+ .base = S3C2443_GPMCON,
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
+ .chip = {
+ .base = S3C2410_GPM(0),
+ .owner = THIS_MODULE,
+ .label = "GPIOM",
+ .ngpio = 2,
},
},
};
+
static __init int s3c24xx_gpiolib_init(void)
{
- struct s3c24xx_gpio_chip *chip = gpios;
+ struct s3c_gpio_chip *chip = s3c24xx_gpios;
int gpn;
- for (gpn = 0; gpn < ARRAY_SIZE(gpios); gpn++, chip++)
- gpiochip_add(&chip->chip);
+ for (gpn = 0; gpn < ARRAY_SIZE(s3c24xx_gpios); gpn++, chip++) {
+ if (!chip->config)
+ chip->config = &s3c24xx_gpiocfg_default;
+
+ s3c_gpiolib_add(chip);
+ }
return 0;
}
-arch_initcall(s3c24xx_gpiolib_init);
+core_initcall(s3c24xx_gpiolib_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff