[PATCHv4 2/3] wifi: ath9k: ahb: add led pin OF support

[Rosen Penev <rosenp@gmail.com>]

The old and removed platform code had support for assigning a value for
the LED pin for when the default is not correct. Effectively a fix for a
non working LED.

Added led-active-high to set the LED to active high.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/net/wireless/ath/ath9k/init.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index c911b178dcc2..28dc6c0e27aa 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -662,6 +662,17 @@ static int ath9k_of_init(struct ath_softc *sc)
 	if (ret == -EPROBE_DEFER)
 		return ret;
 
+	np = of_get_child_by_name(np, "led");
+	if (np) {
+		u32 led_pin;
+
+		if (!of_property_read_u32(np, "reg", &led_pin))
+			ah->led_pin = led_pin;
+
+		ah->config.led_active_high = of_property_read_bool(np, "led-active-high");
+		of_node_put(np);
+	}
+
 	return 0;
 }
 
-- 
2.50.1