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 <sjg@chromium.org>
Reviewed-by: Ziping Chen <techping.chan@gmail.com>
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 @@
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 @@
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;
}