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
Signed-off-by: Rajeshwari Shinde <rajeshwar...@samsung.com>
---
Changes in V2:
- New patch
Changes in V3:
- Created a table to know the base address of input bank.
Changes in V4:
- Moved the function name_to_gpio to s5p gpio driver and
renamed to s5p_name_to_gpio.
arch/arm/include/asm/arch-exynos/gpio.h | 8 +++++
drivers/gpio/s5p_gpio.c | 49 +++++++++++++++++++++++++++++++
include/configs/exynos5250-dt.h | 1 +
3 files changed, 58 insertions(+), 0 deletions(-)
diff --git a/arch/arm/include/asm/arch-exynos/gpio.h
b/arch/arm/include/asm/arch-exynos/gpio.h
index 0b8e35e..7c0df0b 100644
--- a/arch/arm/include/asm/arch-exynos/gpio.h
+++ b/arch/arm/include/asm/arch-exynos/gpio.h
@@ -668,6 +668,14 @@ static inline unsigned int s5p_gpio_part_max(int nr)
return 0;
}
+struct gpio_name_num_table {
+ char bank;
+ unsigned int base;
+};
+
+int s5p_name_to_gpio(const char *name);
+#define name_to_gpio(n) s5p_name_to_gpio(n)
+
void gpio_cfg_pin(int gpio, int cfg);
void gpio_set_pull(int gpio, int mode);
void gpio_set_drv(int gpio, int mode);
diff --git a/drivers/gpio/s5p_gpio.c b/drivers/gpio/s5p_gpio.c
index a503137..312d352 100644
--- a/drivers/gpio/s5p_gpio.c
+++ b/drivers/gpio/s5p_gpio.c
@@ -57,6 +57,21 @@ static const struct gpio_info
gpio_data[EXYNOS5_GPIO_NUM_PARTS] = {
#define HAVE_GENERIC_GPIO
#endif
+struct gpio_name_num_table exynos5_gpio_table[] = {
+ { 'a', EXYNOS5_GPIO_A00 },
+ { 'b', EXYNOS5_GPIO_B00 },
+ { 'c', EXYNOS5_GPIO_C00 },
+ { 'd', EXYNOS5_GPIO_D00 },
+ { 'y', EXYNOS5_GPIO_Y00 },
+ { 'x', EXYNOS5_GPIO_X00 },
+ { 'e', EXYNOS5_GPIO_E00 },
+ { 'f', EXYNOS5_GPIO_F00 },
+ { 'g', EXYNOS5_GPIO_G00 },
+ { 'h', EXYNOS5_GPIO_H00 },
+ { 'v', EXYNOS5_GPIO_V00 },
+ { 'z', EXYNOS5_GPIO_Z0 },
+};
+
void s5p_gpio_cfg_pin(struct s5p_gpio_bank *bank, int gpio, int cfg)
{
unsigned int value;
@@ -259,3 +274,37 @@ void gpio_cfg_pin(int gpio, int cfg)
s5p_gpio_cfg_pin(s5p_gpio_get_bank(gpio),
s5p_gpio_get_pin(gpio), cfg);
}
+
+int s5p_name_to_gpio(const char *name)
+{
+ unsigned int num, i;
+
+ name++;
+
+ if (*name == 'p')
+ ++name;
+
+ for (i = 0; i < ARRAY_SIZE(exynos5_gpio_table); i++) {
+ if (*name == exynos5_gpio_table[i].bank) {
+ if (*name == 'c') {
+ name++;
+ num = simple_strtoul(name, NULL, 10);
+ if (num >= 40) {
+ num = EXYNOS5_GPIO_C40 + (num - 40);
+ } else {
+ num = simple_strtoul(name, NULL, 8);
+ num = exynos5_gpio_table[i].base + num;
+ }
+ } else {
+ name++;
+ num = simple_strtoul(name, NULL, 8);
+ num = exynos5_gpio_table[i].base + num;
+ }
+ break;
+ }
+ }
+
+ if (i == ARRAY_SIZE(exynos5_gpio_table))
+ return -1;
+ return num;
+}
diff --git a/include/configs/exynos5250-dt.h b/include/configs/exynos5250-dt.h
index 9fab0fb..5a8a2fb 100644
--- a/include/configs/exynos5250-dt.h
+++ b/include/configs/exynos5250-dt.h
@@ -115,6 +115,7 @@
#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
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