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. arch/arm/cpu/armv7/exynos/pinmux.c | 50 +++++++++++++++++++++++++++++++ arch/arm/include/asm/arch-exynos/gpio.h | 8 +++++ include/configs/exynos5250-dt.h | 1 + 3 files changed, 59 insertions(+), 0 deletions(-)
diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c index 28b0306..a01ce0c 100644 --- a/arch/arm/cpu/armv7/exynos/pinmux.c +++ b/arch/arm/cpu/armv7/exynos/pinmux.c @@ -27,6 +27,21 @@ #include <asm/arch/pinmux.h> #include <asm/arch/sromc.h>
+struct gpio_name_num_table exynos5_gpio_table[] = { + { 'a', GPIO_A00 }, + { 'b', GPIO_B00 }, + { 'c', GPIO_C00 }, + { 'd', GPIO_D00 }, + { 'y', GPIO_Y00 }, + { 'x', GPIO_X00 }, + { 'e', GPIO_E00 }, + { 'f', GPIO_F00 }, + { 'g', GPIO_G00 }, + { 'h', GPIO_H00 }, + { 'v', GPIO_V00 }, + { 'z', GPIO_Z0 }, +}; + static void exynos5_uart_config(int peripheral) { int i, start, count; @@ -448,3 +463,38 @@ int pinmux_decode_periph_id(const void *blob, int node) return PERIPH_ID_NONE; } #endif + +int 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 = 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/arch/arm/include/asm/arch-exynos/gpio.h b/arch/arm/include/asm/arch-exynos/gpio.h index 38b959d..016a112 100644 --- a/arch/arm/include/asm/arch-exynos/gpio.h +++ b/arch/arm/include/asm/arch-exynos/gpio.h @@ -657,6 +657,14 @@ 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); + +struct gpio_name_num_table { + char bank; + unsigned int base; +}; + +int name_to_gpio(const char *name); +#define name_to_gpio(n) name_to_gpio(n) #endif
/* Pin configurations */ diff --git a/include/configs/exynos5250-dt.h b/include/configs/exynos5250-dt.h index b1b24a9..a32cc3e 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