diff options
Diffstat (limited to 'drivers/misc/gpio_led.c')
| -rw-r--r-- | drivers/misc/gpio_led.c | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/drivers/misc/gpio_led.c b/drivers/misc/gpio_led.c index 3fedddc..3e95727 100644 --- a/drivers/misc/gpio_led.c +++ b/drivers/misc/gpio_led.c @@ -9,15 +9,42 @@ #include <status_led.h> #include <asm/gpio.h> +#ifndef CONFIG_GPIO_LED_INVERTED_TABLE +#define CONFIG_GPIO_LED_INVERTED_TABLE {} +#endif + +static led_id_t gpio_led_inv[] = CONFIG_GPIO_LED_INVERTED_TABLE; + +static int gpio_led_gpio_value(led_id_t mask, int state) +{ + int i, gpio_value = (state == STATUS_LED_ON); + + for (i = 0; i < ARRAY_SIZE(gpio_led_inv); i++) { + if (gpio_led_inv[i] == mask) + gpio_value = !gpio_value; + } + + return gpio_value; +} + void __led_init(led_id_t mask, int state) { - gpio_request(mask, "gpio_led"); - gpio_direction_output(mask, state == STATUS_LED_ON); + int gpio_value; + + if (gpio_request(mask, "gpio_led") != 0) { + printf("%s: failed requesting GPIO%lu!\n", __func__, mask); + return; + } + + gpio_value = gpio_led_gpio_value(mask, state); + gpio_direction_output(mask, gpio_value); } void __led_set(led_id_t mask, int state) { - gpio_set_value(mask, state == STATUS_LED_ON); + int gpio_value = gpio_led_gpio_value(mask, state); + + gpio_set_value(mask, gpio_value); } void __led_toggle(led_id_t mask) |