[U-Boot] [PATCH 3/3 V2] EXYNOS5: GPIO: Enable GPIO Command for EXYNOS5

[Rajeshwari Shinde]

This patch enables GPIO Command for EXYNOS5.
Function has been added to asm/gpio.h to decode the
input gpio name to gpio number.
example: gpio set gpa00
GPIO_INPUT in cmd_gpio.c has been modified to
GPIO_DIRECTION_INPUT as GPIO_INPUT is alraedy defined in
exynos5 and leading to a error.

Signed-off-by: Rajeshwari Shinde <rajeshwari.s at samsung.com>
---
Chnages in V2:
	- New patch
 arch/arm/include/asm/arch-exynos/gpio.h |   88 +++++++++++++++++++++++++++++++
 common/cmd_gpio.c                       |    6 +-
 include/configs/exynos5250-dt.h         |    1 +
 3 files changed, 92 insertions(+), 3 deletions(-)

diff --git a/arch/arm/include/asm/arch-exynos/gpio.h b/arch/arm/include/asm/arch-exynos/gpio.h
index af882dd..66e4a8e 100644
--- a/arch/arm/include/asm/arch-exynos/gpio.h
+++ b/arch/arm/include/asm/arch-exynos/gpio.h
@@ -657,6 +657,94 @@ static inline unsigned int s5p_gpio_part_max(int nr)
 void gpio_cfg_pin(int gpio, int cfg);
 void gpio_set_pull(int gpio, int mode);
 void gpio_set_drv(int gpio, int mode);
+
+#include <common.h>
+
+static inline int name_to_gpio(const char *name)
+{
+	int num;
+
+	name++;
+
+	if (*name == 'p') {
+		++name;
+
+		switch (*name) {
+		case 'a':
+			name++;
+			num = simple_strtoul(name, NULL, 8);
+			num = GPIO_A00 + num;
+			break;
+		case 'b':
+			name++;
+			num = simple_strtoul(name, NULL, 8);
+			num = GPIO_B00 + num;
+			break;
+		case 'c':
+			name++;
+			num = simple_strtoul(name, NULL, 10);
+			if (num >= 40)
+				num = GPIO_C40 + (num - 40);
+			else {
+			num = simple_strtoul(name, NULL, 8);
+			num = GPIO_C00 + num;
+			}
+			break;
+		case 'd':
+			name++;
+			num = simple_strtoul(name, NULL, 8);
+			num = GPIO_D00 + num;
+			break;
+		case 'y':
+			name++;
+			num = simple_strtoul(name, NULL, 8);
+			num = GPIO_Y00 + num;
+			break;
+		case 'x':
+			name++;
+			num = simple_strtoul(name, NULL, 8);
+			num = GPIO_X00 + num;
+			break;
+		case 'e':
+			name++;
+			num = simple_strtoul(name, NULL, 8);
+			num = GPIO_E00 + num;
+			break;
+		case 'f':
+			name++;
+			num = simple_strtoul(name, NULL, 8);
+			num = GPIO_F00 + num;
+			break;
+		case 'g':
+			name++;
+			num = simple_strtoul(name, NULL, 8);
+			num = GPIO_G00 + num;
+			break;
+		case 'h':
+			name++;
+			num = simple_strtoul(name, NULL, 8);
+			num = GPIO_H00 + num;
+			break;
+		case 'v':
+			name++;
+			num = simple_strtoul(name, NULL, 8);
+			num = GPIO_V00 + num;
+			break;
+		case 'z':
+			name++;
+			num = simple_strtoul(name, NULL, 8);
+			num = GPIO_Z0 + num;
+			break;
+		default:
+			return -1;
+		}
+	} else
+		return -1;
+
+	return num;
+}
+
+#define name_to_gpio(n) name_to_gpio(n)
 #endif
 
 /* Pin configurations */
diff --git a/common/cmd_gpio.c b/common/cmd_gpio.c
index 47eee89..450e6d1 100644
--- a/common/cmd_gpio.c
+++ b/common/cmd_gpio.c
@@ -16,7 +16,7 @@
 #endif
 
 enum gpio_cmd {
-	GPIO_INPUT,
+	GPIO_DIRECTION_INPUT,
 	GPIO_SET,
 	GPIO_CLEAR,
 	GPIO_TOGGLE,
@@ -44,7 +44,7 @@ static int do_gpio(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 
 	/* parse the behavior */
 	switch (*str_cmd) {
-		case 'i': sub_cmd = GPIO_INPUT;  break;
+		case 'i': sub_cmd = GPIO_DIRECTION_INPUT;  break;
 		case 's': sub_cmd = GPIO_SET;    break;
 		case 'c': sub_cmd = GPIO_CLEAR;  break;
 		case 't': sub_cmd = GPIO_TOGGLE; break;
@@ -63,7 +63,7 @@ static int do_gpio(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	}
 
 	/* finally, let's do it: set direction and exec command */
-	if (sub_cmd == GPIO_INPUT) {
+	if (sub_cmd == GPIO_DIRECTION_INPUT) {
 		gpio_direction_input(gpio);
 		value = gpio_get_value(gpio);
 	} else {
diff --git a/include/configs/exynos5250-dt.h b/include/configs/exynos5250-dt.h
index 7b9c393..b20b8f2 100644
--- a/include/configs/exynos5250-dt.h
+++ b/include/configs/exynos5250-dt.h
@@ -113,6 +113,7 @@
 #define CONFIG_CMD_EXT2
 #define CONFIG_CMD_FAT
 #define CONFIG_CMD_NET
+#define CONFIG_CMD_GPIO
 
 #define CONFIG_BOOTDELAY		3
 #define CONFIG_ZERO_BOOTDELAY_CHECK
-- 
1.7.4.4