ARM: S3C24XX: Add initial s3c_gpio configuration code

Add support for s3c_gpio_setcfg() and s3c_gpio_setpull() implementations
to get ready for removal of the specific code being used by s3c24xx.

Also rename the s3c_gpio_setcfg_s3c24xx_banka to s3c_gpio_setcfg_s3c24xx_a
as seen in the header file to correct a build warning.

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

4 files changed, 22 insertions, 3 deletions

diff --git a/arch/arm/plat-s3c24xx/Kconfig b/arch/arm/plat-s3c24xx/Kconfig
index 6e93ef8f3d43..a830fad6f89e 100644
--- a/arch/arm/plat-s3c24xx/Kconfig
+++ b/arch/arm/plat-s3c24xx/Kconfig
@@ -9,6 +9,7 @@ config PLAT_S3C24XX
         select NO_IOPORT
         select ARCH_REQUIRE_GPIOLIB
         select S3C_DEVICE_NAND
+        select S3C_GPIO_CFG_S3C24XX
         help
           Base platform code for any Samsung S3C24XX device
 
diff --git a/arch/arm/plat-s3c24xx/gpiolib.c b/arch/arm/plat-s3c24xx/gpiolib.c
index 4f0f11a6a677..376b061804c2 100644
--- a/arch/arm/plat-s3c24xx/gpiolib.c
+++ b/arch/arm/plat-s3c24xx/gpiolib.c
@@ -21,6 +21,8 @@
 #include <linux/gpio.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>
@@ -77,10 +79,19 @@ 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,
+};
+
+struct s3c_gpio_cfg s3c24xx_gpiocfg_default = {
+        .set_config     = s3c_gpio_setcfg_s3c24xx,
+};
+
 struct s3c_gpio_chip s3c24xx_gpios[] = {
         [0] = {
                 .base   = S3C2410_GPACON,
                 .pm     = __gpio_pm(&s3c_gpio_pm_1bit),
+                .config = &s3c24xx_gpiocfg_banka,
                 .chip   = {
                         .base                   = S3C2410_GPA(0),
                         .owner                  = THIS_MODULE,
@@ -168,8 +179,12 @@ static __init int s3c24xx_gpiolib_init(void)
         struct s3c_gpio_chip *chip = s3c24xx_gpios;
         int gpn;
 
-        for (gpn = 0; gpn < ARRAY_SIZE(s3c24xx_gpios); gpn++, 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;
 }
diff --git a/arch/arm/plat-samsung/gpio-config.c b/arch/arm/plat-samsung/gpio-config.c
index 44a84e896546..c5832824e198 100644
--- a/arch/arm/plat-samsung/gpio-config.c
+++ b/arch/arm/plat-samsung/gpio-config.c
@@ -61,8 +61,8 @@ int s3c_gpio_setpull(unsigned int pin, s3c_gpio_pull_t pull)
 EXPORT_SYMBOL(s3c_gpio_setpull);
 
 #ifdef CONFIG_S3C_GPIO_CFG_S3C24XX
-int s3c_gpio_setcfg_s3c24xx_banka(struct s3c_gpio_chip *chip,
-                                  unsigned int off, unsigned int cfg)
+int s3c_gpio_setcfg_s3c24xx_a(struct s3c_gpio_chip *chip,
+                              unsigned int off, unsigned int cfg)
 {
         void __iomem *reg = chip->base;
         unsigned int shift = off;
diff --git a/arch/arm/plat-samsung/include/plat/gpio-core.h b/arch/arm/plat-samsung/include/plat/gpio-core.h
index 49ff406a7066..f0584f26d493 100644
--- a/arch/arm/plat-samsung/include/plat/gpio-core.h
+++ b/arch/arm/plat-samsung/include/plat/gpio-core.h
@@ -108,6 +108,9 @@ extern void samsung_gpiolib_add_4bit2_chips(struct s3c_gpio_chip *chip,
 extern void samsung_gpiolib_add_4bit(struct s3c_gpio_chip *chip);
 extern void samsung_gpiolib_add_4bit2(struct s3c_gpio_chip *chip);
 
+/* exported for core SoC support to change */
+extern struct s3c_gpio_cfg s3c24xx_gpiocfg_default;
+
 #ifdef CONFIG_S3C_GPIO_TRACK
 extern struct s3c_gpio_chip *s3c_gpios[S3C_GPIO_END];