colin/u-boot
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

led: Add dts property to specify blinking of the led

Browse Source 
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>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Michael Polyntsov
2024-07-19 13:12:13 +04:00
committed by Tom Rini
parent b557f55e90
commit f15e89efad
1 changed files with 24 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/led/led-uclass.c
View File

@@ -118,6 +118,14 @@ static int led_post_bind(struct udevice *dev)
else
return 0;
if (IS_ENABLED(CONFIG_LED_BLINK)) {
const char *trigger;
trigger = dev_read_string(dev, "linux,default-trigger");
if (trigger && !strncmp(trigger, "pattern", 7))
uc_plat->default_state = LEDST_BLINK;
}
/*
* In case the LED has default-state DT property, trigger
* probe() to configure its default state during startup.
@@ -130,12 +138,24 @@ 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 default_period_ms = 1000;
int ret = 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:
ret = led_set_state(dev, uc_plat->default_state);
break;
case LEDST_BLINK:
ret = led_set_period(dev, default_period_ms);
if (!ret)
ret = led_set_state(dev, uc_plat->default_state);
break;
default:
break;
}
return 0;
return ret;
}
UCLASS_DRIVER(led) = {