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 rajeshwari.s@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. Changes in V5: - Rebased on latest u-boot-samsung tree 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 d8000af..9b31dc2 100644 --- a/arch/arm/include/asm/arch-exynos/gpio.h +++ b/arch/arm/include/asm/arch-exynos/gpio.h @@ -660,6 +660,14 @@ static inline unsigned int get_bank_num(void) 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 d6650c3..824977b 100644 --- a/drivers/gpio/s5p_gpio.c +++ b/drivers/gpio/s5p_gpio.c @@ -36,6 +36,21 @@ #define RATE_MASK(x) (0x1 << (x + 16)) #define RATE_SET(x) (0x1 << (x + 16))
+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; @@ -238,3 +253,37 @@ 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 cbd1c4e..46a4e75 100644 --- a/include/configs/exynos5250-dt.h +++ b/include/configs/exynos5250-dt.h @@ -122,6 +122,7 @@ #define CONFIG_CMD_FAT #define CONFIG_CMD_NET #define CONFIG_CMD_HASH +#define CONFIG_CMD_GPIO
#define CONFIG_BOOTDELAY 3 #define CONFIG_ZERO_BOOTDELAY_CHECK