diff options
| author | Simon Glass <sjg@chromium.org> | 2017-04-10 11:34:56 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2017-04-14 19:38:57 -0600 |
| commit | 9413ad4f0def2e06a5042106a6e1650a1aa03a5a (patch) | |
| tree | c5c98725d3892bdda04e907ec2500502f16435b2 /drivers | |
| parent | 8f4b612333ee0381eedf767c1c005a830886df27 (diff) | |
| download | u-boot-9413ad4f0def2e06a5042106a6e1650a1aa03a5a.tar.gz u-boot-9413ad4f0def2e06a5042106a6e1650a1aa03a5a.tar.bz2 u-boot-9413ad4f0def2e06a5042106a6e1650a1aa03a5a.zip | |
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/led/led_gpio.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/led/led_gpio.c b/drivers/led/led_gpio.c index 789d15600f..4106ecb679 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; } |