From: Benjamin Tietz <benja...@micronet24.de>
---
drivers/led/led-uclass.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++
include/led.h | 18 ++++++++++++++++
2 files changed, 71 insertions(+)
From: Benjamin Tietz <benja...@micronet24.de>
---
drivers/led/led-uclass.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++
include/led.h | 18 ++++++++++++++++
2 files changed, 71 insertions(+)
diff --git a/drivers/led/led-uclass.c b/drivers/led/led-uclass.c
index f5fbbcb..ce519d0 100644
--- a/drivers/led/led-uclass.c
+++ b/drivers/led/led-uclass.c
@@ -32,6 +32,59 @@ int led_get_by_label(const char *label, struct udevice
**devp)
return -ENODEV;
}
+int led_count(void)
+{
+ int cnt = 0;
+ struct udevice *dev;
+ struct uclass *uc;
+ int ret;
+
+ ret = uclass_get(UCLASS_LED, &uc);
+ if (ret)
+ return ret;
+
+ uclass_foreach_dev(dev, uc) {
+ struct led_uclass_plat *uc_plat = dev_get_uclass_platdata(dev);
+
+ /* Ignore the top-level LED node */
+ if (uc_plat->label)
+ cnt++;
+ }
+
+ return cnt;
+}
+
+int led_get_all(struct udevice **devarr, int maxret)
+{
+ int cnt = 0;
+ struct udevice *dev;
+ struct uclass *uc;
+ int ret;
+
+ ret = uclass_get(UCLASS_LED, &uc);
+ if (ret)
+ return ret;
+
+ if(maxret <= cnt)
+ return cnt;
+
+ uclass_foreach_dev(dev, uc) {
+ struct led_uclass_plat *uc_plat = dev_get_uclass_platdata(dev);
+
+ /* Ignore the top-level LED node */
+ if (uc_plat->label) {
+ ret = uclass_get_device_tail(dev, 0, &devarr[cnt]);
+ if(ret)
+ return ret;
+ cnt++;
+ if(cnt >= maxret)
+ return cnt;
+ }
+ }
+
+ return cnt;
+}
+
const char *led_get_label(struct udevice *dev)
{
struct led_uclass_plat *uc_plat = dev_get_uclass_platdata(dev);
diff --git a/include/led.h b/include/led.h
index 32e0dec..4b1bd56 100644
--- a/include/led.h
+++ b/include/led.h
@@ -48,6 +48,24 @@ int led_get_by_label(const char *label, struct udevice
**devp);
const char *led_get_label(struct udevice *dev);
/**
+ * led_count() - retrieve the number of DM-configured LEDs
+ *
+ * @return the number of leds found
+ */
+int led_count(void);
+
+/**
+ * led_get_all() - retrieve an array of DM-configured LEDs
+ *
+ * Should return at most led_count() leds.
+ *
+ * @devarr: pointer to an array of led-device, to be filled.
+ * @maxitm: pre-allocated size of the array
+ * @return number of leds filled into @devarr
+ */
+int led_get_all(struct udevice **devarr, int maxitm);
+
+/**
* led_set_on() - set the state of an LED
*
* @dev: LED device to change
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
