linux-kernel - [PATCHv2 2/3] wifi: ath9k: ahb: add led pin OF support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250812192334.11651-3-rosenp@gmail.com>
Date: Tue, 12 Aug 2025 12:23:33 -0700
From: Rosen Penev <rosenp@...il.com>
To: linux-wireless@...r.kernel.org
Cc: Toke Høiland-Jørgensen <toke@...e.dk>,
	Johannes Berg <johannes@...solutions.net>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
	devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS),
	linux-kernel@...r.kernel.org (open list),
	linux-mips@...r.kernel.org (open list:MIPS)
Subject: [PATCHv2 2/3] wifi: ath9k: ahb: add led pin OF support

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 <rosenp@...il.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..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)) {
+		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);
+	}
+
 	return 0;
 }
 
-- 
2.50.1