diff options
author | Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
---|---|---|
committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/u-boot/drivers/misc/gpio_led.c | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/u-boot/drivers/misc/gpio_led.c')
-rw-r--r-- | qemu/roms/u-boot/drivers/misc/gpio_led.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/drivers/misc/gpio_led.c b/qemu/roms/u-boot/drivers/misc/gpio_led.c new file mode 100644 index 000000000..3e95727d7 --- /dev/null +++ b/qemu/roms/u-boot/drivers/misc/gpio_led.c @@ -0,0 +1,53 @@ +/* + * 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)); +} |