ARM: S3C24XX: Fix mess with gpio {set,get}_pull callbacks

Currently the {set,get}_pull callbacks of the s3c24xx_gpiocfg_default structure
are initalized via s3c_gpio_{get,set}pull_1up. This results in a linker
error when only CONFIG_CPU_S3C2442 is selected:

arch/arm/plat-s3c24xx/built-in.o:(.data+0x13f4): undefined reference to
`s3c_gpio_getpull_1up'
arch/arm/plat-s3c24xx/built-in.o:(.data+0x13f8): undefined reference to
`s3c_gpio_setpull_1up'

The s3c2442 has pulldowns instead of pullups compared to the s3c2440.
The method of controlling them is the same though.
So this patch modifies the existing s3c_gpio_{get,set}pull_1up helper functions
to take an additional parameter deciding whether the pin has a pullup or pulldown.
The s3c_gpio_{get,set}pull_1{down,up} functions then wrap that functions passing
either S3C_GPIO_PULL_UP or S3C_GPIO_PULL_DOWN.

Furthermore this patch sets up the s3c24xx_gpiocfg_default.{get,set}_pull fields
in the s3c244{0,2}_map_io function to the new pulldown helper functions.

Based on patch from "Lars-Peter Clausen" <lars@metafoo.de>

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

3 files changed, 10 insertions, 7 deletions

diff --git a/arch/arm/plat-s3c24xx/cpu.c b/arch/arm/plat-s3c24xx/cpu.c
index 76d0858c3cb..4a10c0f684b 100644
--- a/arch/arm/plat-s3c24xx/cpu.c
+++ b/arch/arm/plat-s3c24xx/cpu.c
@@ -88,7 +88,7 @@ static struct cpu_table cpu_ids[] __initdata = {
 	{
 		.idcode		= 0x32440000,
 		.idmask		= 0xffffffff,
-		.map_io		= s3c244x_map_io,
+		.map_io		= s3c2440_map_io,
 		.init_clocks	= s3c244x_init_clocks,
 		.init_uarts	= s3c244x_init_uarts,
 		.init		= s3c2440_init,
@@ -97,7 +97,7 @@ static struct cpu_table cpu_ids[] __initdata = {
 	{
 		.idcode		= 0x32440001,
 		.idmask		= 0xffffffff,
-		.map_io		= s3c244x_map_io,
+		.map_io		= s3c2440_map_io,
 		.init_clocks	= s3c244x_init_clocks,
 		.init_uarts	= s3c244x_init_uarts,
 		.init		= s3c2440_init,
@@ -106,7 +106,7 @@ static struct cpu_table cpu_ids[] __initdata = {
 	{
 		.idcode		= 0x32440aaa,
 		.idmask		= 0xffffffff,
-		.map_io		= s3c244x_map_io,
+		.map_io		= s3c2442_map_io,
 		.init_clocks	= s3c244x_init_clocks,
 		.init_uarts	= s3c244x_init_uarts,
 		.init		= s3c2442_init,
@@ -115,7 +115,7 @@ static struct cpu_table cpu_ids[] __initdata = {
 	{
 		.idcode		= 0x32440aab,
 		.idmask		= 0xffffffff,
-		.map_io		= s3c244x_map_io,
+		.map_io		= s3c2442_map_io,
 		.init_clocks	= s3c244x_init_clocks,
 		.init_uarts	= s3c244x_init_uarts,
 		.init		= s3c2442_init,
diff --git a/arch/arm/plat-s3c24xx/gpiolib.c b/arch/arm/plat-s3c24xx/gpiolib.c
index 24c6f5a3059..243b6411050 100644
--- a/arch/arm/plat-s3c24xx/gpiolib.c
+++ b/arch/arm/plat-s3c24xx/gpiolib.c
@@ -82,8 +82,6 @@ static struct s3c_gpio_cfg s3c24xx_gpiocfg_banka = {
 struct s3c_gpio_cfg s3c24xx_gpiocfg_default = {
 	.set_config	= s3c_gpio_setcfg_s3c24xx,
 	.get_config	= s3c_gpio_getcfg_s3c24xx,
-	.set_pull	= s3c_gpio_setpull_1up,
-	.get_pull	= s3c_gpio_getpull_1up,
 };
 
 struct s3c_gpio_chip s3c24xx_gpios[] = {
diff --git a/arch/arm/plat-s3c24xx/include/plat/s3c244x.h b/arch/arm/plat-s3c24xx/include/plat/s3c244x.h
index 307248d1ccb..89e8d0a25f8 100644
--- a/arch/arm/plat-s3c24xx/include/plat/s3c244x.h
+++ b/arch/arm/plat-s3c24xx/include/plat/s3c244x.h
@@ -21,17 +21,22 @@ extern void s3c244x_init_clocks(int xtal);
 #else
 #define s3c244x_init_clocks NULL
 #define s3c244x_init_uarts NULL
-#define s3c244x_map_io NULL
 #endif
 
 #ifdef CONFIG_CPU_S3C2440
 extern  int s3c2440_init(void);
+
+extern void s3c2440_map_io(void);
 #else
 #define s3c2440_init NULL
+#define s3c2440_map_io NULL
 #endif
 
 #ifdef CONFIG_CPU_S3C2442
 extern  int s3c2442_init(void);
+
+extern void s3c2442_map_io(void);
 #else
 #define s3c2442_init NULL
+#define s3c2442_map_io NULL
 #endif