From 9413ad4f0def2e06a5042106a6e1650a1aa03a5a Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Mon, 10 Apr 2017 11:34:56 -0600 Subject: dm: led: Support toggling LEDs Add support for toggling an LED into the uclass interface. This can be efficiently implemented by the driver. Signed-off-by: Simon Glass Reviewed-by: Ziping Chen --- drivers/led/led_gpio.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/led') diff --git a/drivers/led/led_gpio.c b/drivers/led/led_gpio.c index 789d156..4106ecb 100644 --- a/drivers/led/led_gpio.c +++ b/drivers/led/led_gpio.c @@ -21,6 +21,7 @@ struct led_gpio_priv { static int gpio_led_set_state(struct udevice *dev, enum led_state_t state) { struct led_gpio_priv *priv = dev_get_priv(dev); + int ret; if (!dm_gpio_is_valid(&priv->gpio)) return -EREMOTEIO; @@ -28,6 +29,12 @@ static int gpio_led_set_state(struct udevice *dev, enum led_state_t state) case LEDST_OFF: case LEDST_ON: break; + case LEDST_TOGGLE: + ret = dm_gpio_get_value(&priv->gpio); + if (ret < 0) + return ret; + state = !ret; + break; default: return -ENOSYS; } -- cgit v1.1