From: Benjamin Tietz <benja...@micronet24.de>
---
drivers/led/led-uclass.c | 10 ++++++++++
include/led.h | 18 ++++++++++++++++++
2 files changed, 28 insertions(+)
From: Benjamin Tietz <benja...@micronet24.de>
---
drivers/led/led-uclass.c | 10 ++++++++++
include/led.h | 18 ++++++++++++++++++
2 files changed, 28 insertions(+)
diff --git a/drivers/led/led-uclass.c b/drivers/led/led-uclass.c
index ce519d0..7d7dec3 100644
--- a/drivers/led/led-uclass.c
+++ b/drivers/led/led-uclass.c
@@ -101,6 +101,16 @@ int led_set_on(struct udevice *dev, int on)
return ops->set_on(dev, on);
}
+int led_get_on(struct udevice *dev)
+{
+ struct led_ops *ops = led_get_ops(dev);
+
+ if (!ops->get_on)
+ return -ENOSYS;
+
+ return ops->get_on(dev);
+}
+
UCLASS_DRIVER(led) = {
.id = UCLASS_LED,
.name = "led",
diff --git a/include/led.h b/include/led.h
index 4b1bd56..4709013 100644
--- a/include/led.h
+++ b/include/led.h
@@ -26,6 +26,16 @@ struct led_ops {
* @return 0 if OK, -ve on error
*/
int (*set_on)(struct udevice *dev, int on);
+
+ /**
+ * get_on() - get the current state of an LED
+ *
+ * function is optional.
+ *
+ * @dev: LED device to check
+ * @return 0 if OFF, 1 if ON, -ve on error
+ */
+ int (*get_on)(struct udevice *dev);
};
#define led_get_ops(dev) ((struct led_ops *)(dev)->driver->ops)
@@ -74,4 +84,12 @@ int led_get_all(struct udevice **devarr, int maxitm);
*/
int led_set_on(struct udevice *dev, int on);
+/**
+ * led_get_on() - get the current state of an LED
+ *
+ * @dev: LED device to check
+ * @return 0 if OFF, 1 if ON, -ve on error
+ */
+int led_get_on(struct udevice *dev);
+
#endif
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