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| author | Simon Glass <sjg@chromium.org> | 2017-04-10 11:34:57 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2017-04-14 19:38:57 -0600 |
| commit | 53378dac8dc33e3fd5f07d60bd7a5f8258ac7a20 (patch) | |
| tree | 13613de1ea3ed6d991b440f0797cb25a671da40d /drivers | |
| parent | 9413ad4f0def2e06a5042106a6e1650a1aa03a5a (diff) | |
| download | u-boot-53378dac8dc33e3fd5f07d60bd7a5f8258ac7a20.zip u-boot-53378dac8dc33e3fd5f07d60bd7a5f8258ac7a20.tar.gz u-boot-53378dac8dc33e3fd5f07d60bd7a5f8258ac7a20.tar.bz2 | |
dm: led: Add support for blinking LEDs
Allow LEDs to be blinked if the driver supports it. Enable this for
sandbox so that the tests run.
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/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/led/led-uclass.c | 12 |
2 files changed, 21 insertions, 0 deletions
diff --git a/drivers/led/Kconfig b/drivers/led/Kconfig index 0ef45bc..309372a 100644 --- a/drivers/led/Kconfig +++ b/drivers/led/Kconfig @@ -9,6 +9,15 @@ config LED can provide access to board-specific LEDs. Use of the device tree for configuration is encouraged. +config LED_BLINK + bool "Support LED blinking" + depends on LED + help + Some drivers can support automatic blinking of LEDs with a given + period, without needing timers or extra code to handle the timing. + This option enables support for this which adds slightly to the + code size. + config SPL_LED bool "Enable LED support in SPL" depends on SPL && SPL_DM diff --git a/drivers/led/led-uclass.c b/drivers/led/led-uclass.c index ea5fbab..78ab760 100644 --- a/drivers/led/led-uclass.c +++ b/drivers/led/led-uclass.c @@ -52,6 +52,18 @@ enum led_state_t led_get_state(struct udevice *dev) return ops->get_state(dev); } +#ifdef CONFIG_LED_BLINK +int led_set_period(struct udevice *dev, int period_ms) +{ + struct led_ops *ops = led_get_ops(dev); + + if (!ops->set_period) + return -ENOSYS; + + return ops->set_period(dev, period_ms); +} +#endif + UCLASS_DRIVER(led) = { .id = UCLASS_LED, .name = "led", |