Thread (12 messages) 12 messages, 2 authors, 2025-08-14

Re: [PATCHv2 2/3] wifi: ath9k: ahb: add led pin OF support

From: Rosen Penev <hidden>
Date: 2025-08-13 22:59:42
Also in: linux-mips, linux-wireless, lkml

On Wed, Aug 13, 2025 at 1:20 AM Krzysztof Kozlowski [off-list ref] wrote:
On 12/08/2025 21:23, Rosen Penev wrote:
quoted
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.

For setting an LED to active high, a negation of led-active-low is used,
as two drivers currently use that and no drivers use led-active-high or
something similar.

Signed-off-by: Rosen Penev <redacted>
---
 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..7826b113235d 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 && of_device_is_available(np)) {
You are open-coding of_get_available_child_by_name().
Will fix.
quoted
+             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-low");
+             of_node_put(np);
+     }
Leaking OF node.
Not following here.
quoted
+
      return 0;
 }

Best regards,
Krzysztof
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