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Diffstat (limited to 'arch/arm/plat-s3c24xx/gpiolib.c')
-rw-r--r--arch/arm/plat-s3c24xx/gpiolib.c148
1 files changed, 24 insertions, 124 deletions
diff --git a/arch/arm/plat-s3c24xx/gpiolib.c b/arch/arm/plat-s3c24xx/gpiolib.c
index 3caec6bad3e..94a341aaa4e 100644
--- a/arch/arm/plat-s3c24xx/gpiolib.c
+++ b/arch/arm/plat-s3c24xx/gpiolib.c
@@ -19,104 +19,12 @@
#include <linux/io.h>
#include <linux/gpio.h>
+#include <plat/gpio-core.h>
#include <mach/hardware.h>
#include <asm/irq.h>
#include <mach/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.
- */
-
-static 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;
-}
-
-static 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;
-}
-
-static 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);
-}
-
-static 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;
-}
-
static int s3c24xx_gpiolib_banka_input(struct gpio_chip *chip, unsigned offset)
{
return -EINVAL;
@@ -125,7 +33,7 @@ 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;
@@ -151,7 +59,23 @@ static int s3c24xx_gpiolib_banka_output(struct gpio_chip *chip,
return 0;
}
-static struct s3c24xx_gpio_chip gpios[] = {
+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;
+}
+
+struct s3c_gpio_chip s3c24xx_gpios[] = {
[0] = {
.base = S3C24XX_GPIO_BASE(S3C2410_GPA0),
.chip = {
@@ -161,8 +85,6 @@ static struct s3c24xx_gpio_chip gpios[] = {
.ngpio = 24,
.direction_input = s3c24xx_gpiolib_banka_input,
.direction_output = s3c24xx_gpiolib_banka_output,
- .set = s3c24xx_gpiolib_set,
- .get = s3c24xx_gpiolib_get,
},
},
[1] = {
@@ -172,10 +94,6 @@ static struct s3c24xx_gpio_chip gpios[] = {
.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] = {
@@ -185,10 +103,6 @@ static struct s3c24xx_gpio_chip gpios[] = {
.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] = {
@@ -198,10 +112,6 @@ static struct s3c24xx_gpio_chip gpios[] = {
.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] = {
@@ -211,10 +121,6 @@ static struct s3c24xx_gpio_chip gpios[] = {
.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] = {
@@ -224,10 +130,7 @@ static struct s3c24xx_gpio_chip gpios[] = {
.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] = {
@@ -237,21 +140,18 @@ static struct s3c24xx_gpio_chip gpios[] = {
.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,
+ .to_irq = s3c24xx_gpiolib_bankg_toirq,
},
},
};
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++)
+ s3c_gpiolib_add(chip);
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-26 05:42:03 +0000