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platform/x86: asus-wmi: support the disable camera LED on F10 of Zenbook 2023

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Adds a sysfs entry for the LED on F10 above the crossed out camera icon
on 2023 Zenbooks.

Signed-off-by: Devin Bayer <dev@doubly.so>
Link: https://lore.kernel.org/r/20240628084603.217106-1-dev@doubly.so
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Devin Bayer 2024-06-28 10:46:03 +02:00 committed by Ilpo Järvinen
parent cf25477c52
commit 4bf1ea3fc9
No known key found for this signature in database
GPG Key ID: 59AC4F6153E5CE31
2 changed files with 39 additions and 0 deletions
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35
drivers/platform/x86/asus-wmi.c
View File

@ -238,6 +238,7 @@ struct asus_wmi {
struct led_classdev lightbar_led;
int lightbar_led_wk;
struct led_classdev micmute_led;
struct led_classdev camera_led;
struct workqueue_struct *led_workqueue;
struct work_struct tpd_led_work;
struct work_struct wlan_led_work;
@ -1642,6 +1643,27 @@ static int micmute_led_set(struct led_classdev *led_cdev,
return err < 0 ? err : 0;
}
static enum led_brightness camera_led_get(struct led_classdev *led_cdev)
{
struct asus_wmi *asus;
u32 result;
asus = container_of(led_cdev, struct asus_wmi, camera_led);
asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_CAMERA_LED, &result);
return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
}
static int camera_led_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
int state = brightness != LED_OFF;
int err;
err = asus_wmi_set_devstate(ASUS_WMI_DEVID_CAMERA_LED, state, NULL);
return err < 0 ? err : 0;
}
static void asus_wmi_led_exit(struct asus_wmi *asus)
{
led_classdev_unregister(&asus->kbd_led);
@ -1649,6 +1671,7 @@ static void asus_wmi_led_exit(struct asus_wmi *asus)
led_classdev_unregister(&asus->wlan_led);
led_classdev_unregister(&asus->lightbar_led);
led_classdev_unregister(&asus->micmute_led);
led_classdev_unregister(&asus->camera_led);
if (asus->led_workqueue)
destroy_workqueue(asus->led_workqueue);
@ -1740,6 +1763,18 @@ static int asus_wmi_led_init(struct asus_wmi *asus)
goto error;
}
if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_CAMERA_LED)) {
asus->camera_led.name = "asus::camera";
asus->camera_led.max_brightness = 1;
asus->camera_led.brightness_get = camera_led_get;
asus->camera_led.brightness_set_blocking = camera_led_set;
rv = led_classdev_register(&asus->platform_device->dev,
&asus->camera_led);
if (rv)
goto error;
}
error:
if (rv)
asus_wmi_led_exit(asus);

4
include/linux/platform_data/x86/asus-wmi.h
View File

@ -51,6 +51,10 @@
#define ASUS_WMI_DEVID_LED6 0x00020016
#define ASUS_WMI_DEVID_MICMUTE_LED 0x00040017
/* Disable Camera LED */
#define ASUS_WMI_DEVID_CAMERA_LED_NEG 0x00060078 /* 0 = on (unused) */
#define ASUS_WMI_DEVID_CAMERA_LED 0x00060079 /* 1 = on */
/* Backlight and Brightness */
#define ASUS_WMI_DEVID_ALS_ENABLE 0x00050001 /* Ambient Light Sensor */
#define ASUS_WMI_DEVID_BACKLIGHT 0x00050011