[PATCH] platform/x86: asus-ami: support camera LED on newer devices

gistfile1.txt

From faf8891e7ed08b7cd1db964d1627b4eea3c56437 Mon Sep 17 00:00:00 2001
From: Xinyang Li <[email protected]>
Date: Tue, 13 Jan 2026 00:16:44 +0200
Subject: [PATCH] platform/x86: asus-ami: support camera LED on newer devices

---
 drivers/platform/x86/asus-wmi.c | 40 ++++++++++++++++++++++++++++++++-
 1 file changed, 39 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 4aec7ec69250..2dff2b9819b8 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -260,6 +260,7 @@ struct asus_wmi {
 	int lightbar_led_wk;
 	struct led_classdev micmute_led;
 	struct led_classdev camera_led;
+	struct led_classdev camera_led_neg;
 	struct workqueue_struct *led_workqueue;
 	struct work_struct tpd_led_work;
 	struct work_struct wlan_led_work;
@@ -1657,10 +1658,22 @@ static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
 	return read_tpd_led_state(asus);
 }
 
+static enum led_brightness camera_neg_led_get(struct led_classdev *led_cdev)
+{
+	struct asus_wmi *asus;
+	u32 result;
+
+	pr_info("neg_led get called");
+	asus = container_of(led_cdev, struct asus_wmi, camera_led_neg);
+	asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_CAMERA_LED_NEG, &result);
+	pr_info("neg_led get result: %x", result);
+
+	return !(result & ASUS_WMI_DSTS_BRIGHTNESS_MASK);
+}
+
 static void kbd_led_update(struct asus_wmi *asus)
 {
 	int ctrl_param = 0;
-
 	ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
 	asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
 }
@@ -1850,6 +1863,7 @@ static void asus_wmi_led_exit(struct asus_wmi *asus)
 	led_classdev_unregister(&asus->lightbar_led);
 	led_classdev_unregister(&asus->micmute_led);
 	led_classdev_unregister(&asus->camera_led);
+	led_classdev_unregister(&asus->camera_led_neg);
 
 	if (asus->led_workqueue)
 		destroy_workqueue(asus->led_workqueue);
@@ -1938,8 +1952,25 @@ static int asus_wmi_led_init(struct asus_wmi *asus)
 
 		rv = led_classdev_register(&asus->platform_device->dev,
 						&asus->micmute_led);
+		if (rv)
+			pr_err("failed to register platform::micmute");
+		if (rv)
+			goto error;
+		pr_info("registered platform::micmute");
+	}
+
+	if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_CAMERA_LED_NEG)) {
+		pr_info("camera_led_neg is presented");
+		asus->camera_led_neg.name = "asus::camera_neg";
+		asus->camera_led_neg.max_brightness = 1;
+		asus->camera_led_neg.brightness_get = camera_neg_led_get;
+
+		rv = led_classdev_register(&asus->platform_device->dev,
+						&asus->camera_led_neg);
 		if (rv)
 			goto error;
+	} else {
+		pr_info("camera_led_neg is missing");
 	}
 
 	if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_CAMERA_LED)) {
@@ -1950,6 +1981,8 @@ static int asus_wmi_led_init(struct asus_wmi *asus)
 
 		rv = led_classdev_register(&asus->platform_device->dev,
 						&asus->camera_led);
+		if (rv)
+			pr_info("failed to register asus::camera");
 		if (rv)
 			goto error;
 	}
@@ -4388,6 +4421,11 @@ static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus)
 		return;
 	}
 
+	if (code == 0x82 || code == 0x85) {
+		camera_neg_led_get(&asus->camera_led_neg);
+		return;
+	}
+
 	if (code == NOTIFY_KBD_BRTUP) {
 		kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1);
 		return;
-- 
2.52.0