ARM: S5PC1xx: add platform helpers for i2c adapter devices

Samsung S5PC100 has I2C bus controller compatible with the one known from
previous SoCs series. Add required platform setup and support code that
it can be used with s3c2410-i2c driver.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

4 files changed, 16 insertions, 6 deletions

diff --git a/arch/arm/plat-s5pc1xx/Kconfig b/arch/arm/plat-s5pc1xx/Kconfig
index 6ac48a6fba78..1fc25b9f2242 100644
--- a/arch/arm/plat-s5pc1xx/Kconfig
+++ b/arch/arm/plat-s5pc1xx/Kconfig
@@ -42,7 +42,7 @@ config S5PC1XX_SETUP_FB_24BPP
         help
           Common setup code for S5PC1XX with an 24bpp RGB display helper.
 
-config S5PC100_SETUP_I2C0
+config S5PC1XX_SETUP_I2C0
         bool
         default y
         help
@@ -51,7 +51,7 @@ config S5PC100_SETUP_I2C0
           Note, currently since i2c0 is always compiled, this setup helper
           is always compiled with it.
 
-config S5PC100_SETUP_I2C1
+config S5PC1XX_SETUP_I2C1
         bool
         help
           Common setup code for i2c bus 1.
diff --git a/arch/arm/plat-s5pc1xx/Makefile b/arch/arm/plat-s5pc1xx/Makefile
index 3d2ac7150b15..40ee9571fb01 100644
--- a/arch/arm/plat-s5pc1xx/Makefile
+++ b/arch/arm/plat-s5pc1xx/Makefile
@@ -26,5 +26,5 @@ obj-$(CONFIG_CPU_S5PC100_CLOCK)	+= s5pc100-clock.o
 
 obj-$(CONFIG_S5P_GPIO_CFG_S5PC1XX) += gpio-config.o
 obj-$(CONFIG_S5PC1XX_SETUP_FB_24BPP) += setup-fb-24bpp.o
-obj-$(CONFIG_S5PC100_SETUP_I2C0) += setup-i2c0.o
-obj-$(CONFIG_S5PC100_SETUP_I2C1) += setup-i2c1.o
+obj-$(CONFIG_S5PC1XX_SETUP_I2C0) += setup-i2c0.o
+obj-$(CONFIG_S5PC1XX_SETUP_I2C1) += setup-i2c1.o
diff --git a/arch/arm/plat-s5pc1xx/setup-i2c0.c b/arch/arm/plat-s5pc1xx/setup-i2c0.c
index 3d00c025fffb..5e4a7c3a231e 100644
--- a/arch/arm/plat-s5pc1xx/setup-i2c0.c
+++ b/arch/arm/plat-s5pc1xx/setup-i2c0.c
@@ -17,9 +17,14 @@
 
 struct platform_device; /* don't need the contents */
 
+#include <linux/gpio.h>
 #include <plat/iic.h>
+#include <plat/gpio-cfg.h>
 
 void s3c_i2c0_cfg_gpio(struct platform_device *dev)
 {
-        /* Pin configuration would be needed */
+        s3c_gpio_cfgpin(S5PC100_GPD(3), S3C_GPIO_SFN(2));
+        s3c_gpio_setpull(S5PC100_GPD(3), S3C_GPIO_PULL_UP);
+        s3c_gpio_cfgpin(S5PC100_GPD(4), S3C_GPIO_SFN(2));
+        s3c_gpio_setpull(S5PC100_GPD(4), S3C_GPIO_PULL_UP);
 }
diff --git a/arch/arm/plat-s5pc1xx/setup-i2c1.c b/arch/arm/plat-s5pc1xx/setup-i2c1.c
index c8f3ca42f51d..a0a8b4ae6ad8 100644
--- a/arch/arm/plat-s5pc1xx/setup-i2c1.c
+++ b/arch/arm/plat-s5pc1xx/setup-i2c1.c
@@ -17,9 +17,14 @@
 
 struct platform_device; /* don't need the contents */
 
+#include <linux/gpio.h>
 #include <plat/iic.h>
+#include <plat/gpio-cfg.h>
 
 void s3c_i2c1_cfg_gpio(struct platform_device *dev)
 {
-        /* Pin configuration would be needed */
+        s3c_gpio_cfgpin(S5PC100_GPD(5), S3C_GPIO_SFN(2));
+        s3c_gpio_setpull(S5PC100_GPD(5), S3C_GPIO_PULL_UP);
+        s3c_gpio_cfgpin(S5PC100_GPD(6), S3C_GPIO_SFN(2));
+        s3c_gpio_setpull(S5PC100_GPD(6), S3C_GPIO_PULL_UP);
 }