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- /*
- * Status LED driver based on GPIO access conventions of Linux
- *
- * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
- * Licensed under the GPL-2 or later.
- */
- #include <common.h>
- #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)
- {
- 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)
- {
- int gpio_value = gpio_led_gpio_value(mask, state);
- gpio_set_value(mask, gpio_value);
- }
- void __led_toggle(led_id_t mask)
- {
- gpio_set_value(mask, !gpio_get_value(mask));
- }
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