[ARM] S3C: Move common GPIO code from plat-s3c24xx

Move the common parts of the GPIO code into plat-s3c
for use with both the s3c24xx and s3c64xx systems.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 5 insertions, 118 deletions

diff --git a/arch/arm/plat-s3c24xx/gpiolib.c b/arch/arm/plat-s3c24xx/gpiolib.c
index b07c2d0dd533..9785a8fb4809 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 +59,7 @@ static int s3c24xx_gpiolib_banka_output(struct gpio_chip *chip,
         return 0;
 }
 
-static struct s3c24xx_gpio_chip gpios[] = {
+static struct s3c_gpio_chip gpios[] = {
         [0] = {
                 .base   = S3C24XX_GPIO_BASE(S3C2410_GPA0),
                 .chip   = {
@@ -219,34 +127,13 @@ static struct s3c24xx_gpio_chip gpios[] = {
         },
 };
 
-static __init void s3c24xx_gpiolib_add(struct s3c24xx_gpio_chip *chip)
-{
-        struct gpio_chip *gc = &chip->chip;
-
-        BUG_ON(!chip->base);
-        BUG_ON(!gc->label);
-        BUG_ON(!gc->ngpio);
-
-        if (!gc->direction_input)
-                gc->direction_input = s3c24xx_gpiolib_input;
-        if (!gc->direction_output)
-                gc->direction_output = s3c24xx_gpiolib_output;
-        if (!gc->set)
-                gc->set = s3c24xx_gpiolib_set;
-        if (!gc->get)
-                gc->get = s3c24xx_gpiolib_get;
-
-        /* gpiochip_add() prints own failure message on error. */
-        gpiochip_add(gc);
-}
-
 static __init int s3c24xx_gpiolib_init(void)
 {
-        struct s3c24xx_gpio_chip *chip = gpios;
+        struct s3c_gpio_chip *chip = gpios;
         int gpn;
 
         for (gpn = 0; gpn < ARRAY_SIZE(gpios); gpn++, chip++)
-                s3c24xx_gpiolib_add(chip);
+                s3c_gpiolib_add(chip);
 
         return 0;
 }