Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
Documentation/devicetree/bindings/leds/common.txt | 8 ++++++
drivers/led/led-gpio.c | 33 +++++++++++++++++++++++
2 files changed, 41 insertions(+)
create mode 100644 Documentation/devicetree/bindings/leds/common.txt
diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt
new file mode 100644
index 0000000..db264b3
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/common.txt
@@ -0,0 +1,8 @@
+Common leds properties.
+
+- linux,default-trigger barebox,default-trigger: This parameter, if present, is a
+ string defining the trigger assigned to the LED. Current triggers are:
+ "heartbeat" - LED flashes at a constant rate
+ "panic" - LED turns on when barebox panics
+ "net" - LED indicates network activity
+
diff --git a/drivers/led/led-gpio.c b/drivers/led/led-gpio.c
index 54f9264..69db70f 100644
--- a/drivers/led/led-gpio.c
+++ b/drivers/led/led-gpio.c
@@ -199,6 +199,38 @@ void led_gpio_rgb_unregister(struct gpio_led *led)
#ifdef CONFIG_LED_GPIO_OF
+struct led_trg {
+ const char *str;
+ enum led_trigger trg;
+};
+
+static struct led_trg triggers[] = {
+ { .str = "heartbeat", LED_TRIGGER_HEARTBEAT, },
+ { .str = "panic", LED_TRIGGER_PANIC, },
+ { .str = "net", LED_TRIGGER_NET_TXRX, },
+};
+
+static void led_of_parse_trigger(struct led *led, struct device_node *np)
+{
+ const char *trigger;
+ int i;
+
+ trigger = of_get_property(np, "linux,default-trigger", NULL);
+ if (!trigger)
+ trigger = of_get_property(np, "barebox,default-trigger", NULL);
+
+ if (!trigger)
+ return;
+
+ for (i = 0; i < ARRAY_SIZE(triggers); i++) {
+ struct led_trg *trg = &triggers[i];
+ if (!strcmp(trg->str, trigger)) {
+ led_set_trigger(trg->trg, led);
+ return;
+ }
+ }
+}
+
static int led_gpio_of_probe(struct device_d *dev)
{
struct device_node *child;
@@ -220,6 +252,7 @@ static int led_gpio_of_probe(struct device_d *dev)
dev_dbg(dev, "register led %s on gpio%d, active_low = %d\n",
gled->led.name, gled->gpio, gled->active_low);
+ led_of_parse_trigger(&gled->led, child);
led_gpio_register(gled);
}
--
1.8.3.2
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