From: Michael Polyntsov michael.polyntsov@iopsys.eu
The standard property
linux,default-trigger = "pattern";
used to get an effect. No blinking parameters can be set yet.
Signed-off-by: Michael Polyntsov michael.polyntsov@iopsys.eu Signed-off-by: Mikhail Kshevetskiy mikhail.kshevetskiy@iopsys.eu --- drivers/led/led-uclass.c | 33 +++++++++++++++++++++++++++++---- 1 file changed, 29 insertions(+), 4 deletions(-)
diff --git a/drivers/led/led-uclass.c b/drivers/led/led-uclass.c index 03907a12407..6f5315e0fb8 100644 --- a/drivers/led/led-uclass.c +++ b/drivers/led/led-uclass.c @@ -98,6 +98,9 @@ static int led_post_bind(struct udevice *dev) { struct led_uc_plat *uc_plat = dev_get_uclass_plat(dev); const char *default_state; +#ifdef CONFIG_LED_BLINK + const char *trigger; +#endif
if (!uc_plat->label) uc_plat->label = dev_read_string(dev, "label"); @@ -118,6 +121,12 @@ static int led_post_bind(struct udevice *dev) else return 0;
+#ifdef CONFIG_LED_BLINK + trigger = dev_read_string(dev, "linux,default-trigger"); + if (trigger && !strncmp(trigger, "pattern", 7)) + uc_plat->default_state = LEDST_BLINK; +#endif + /* * In case the LED has default-state DT property, trigger * probe() to configure its default state during startup. @@ -130,12 +139,28 @@ static int led_post_bind(struct udevice *dev) static int led_post_probe(struct udevice *dev) { struct led_uc_plat *uc_plat = dev_get_uclass_plat(dev); + int rc = 0;
- if (uc_plat->default_state == LEDST_ON || - uc_plat->default_state == LEDST_OFF) - led_set_state(dev, uc_plat->default_state); + switch (uc_plat->default_state) { + case LEDST_ON: + case LEDST_OFF: + rc = led_set_state(dev, uc_plat->default_state); + break; +#ifdef CONFIG_LED_BLINK + case LEDST_BLINK: { + const int default_period_ms = 1000;
- return 0; + rc = led_set_period(dev, default_period_ms); + if (rc == 0) + rc = led_set_state(dev, uc_plat->default_state); + break; + } +#endif + default: + break; + } + + return rc; }
UCLASS_DRIVER(led) = {