linux-kernel - Re: [PATCH v2] platform/x86: asus-wmi: support the disable camera LED on F10 of Zenbook 2023

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Message-ID: <22352c0a-a853-b28d-a36a-09cc502acb8b@linux.intel.com>
Date: Sun, 23 Jun 2024 19:57:01 +0300 (EEST)
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: Luke Jones <luke@...nes.dev>
cc: Devin Bayer <dev@...bly.so>, corentin.chary@...il.com, 
    Hans de Goede <hdegoede@...hat.com>, platform-driver-x86@...r.kernel.org, 
    LKML <linux-kernel@...r.kernel.org>, linux-api@...r.kernel.org
Subject: Re: [PATCH v2] platform/x86: asus-wmi: support the disable camera
 LED on F10 of Zenbook 2023

On Fri, 21 Jun 2024, Luke Jones wrote:

> On Fri, 21 Jun 2024, at 8:57 PM, Devin Bayer wrote:
> > Adds a sysfs entry for the LED on F10 above the crossed out camera icon on 2023 Zenbooks.
> > 
> > v2
> > - Changed name from `platform::camera` to `asus::camera`
> > - Separated patch from patchset
> > 
> > v1
> > - https://lore.kernel.org/platform-driver-x86/20240620082223.20178-1-dev@doubly.so/
> > 
> > Signed-off-by: Devin Bayer <dev@...bly.so>
> > ---
> > drivers/platform/x86/asus-wmi.c            | 36 ++++++++++++++++++++++
> > include/linux/platform_data/x86/asus-wmi.h |  2 ++
> > 2 files changed, 38 insertions(+)
> > 
> > diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
> > index 3f07bbf809ef..20b7ed6a27b5 100644
> > --- a/drivers/platform/x86/asus-wmi.c
> > +++ b/drivers/platform/x86/asus-wmi.c
> > @@ -73,6 +73,7 @@ module_param(fnlock_default, bool, 0444);
> > #define NOTIFY_LID_FLIP_ROG 0xbd
> >  
> > #define ASUS_WMI_FNLOCK_BIOS_DISABLED BIT(0)
> > +#define ASUS_WMI_DEVID_CAMERA_LED 0x00060079
> >  
> > #define ASUS_MID_FAN_DESC "mid_fan"
> > #define ASUS_GPU_FAN_DESC "gpu_fan"
> > @@ -227,6 +228,7 @@ 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;
> > @@ -1533,6 +1535,27 @@ 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);
> > @@ -1540,6 +1563,7 @@ 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);
> > @@ -1631,6 +1655,18 @@ 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);
> > diff --git a/include/linux/platform_data/x86/asus-wmi.h b/include/linux/platform_data/x86/asus-wmi.h
> > index ab1c7deff118..fb0b00f7d292 100644
> > --- a/include/linux/platform_data/x86/asus-wmi.h
> > +++ b/include/linux/platform_data/x86/asus-wmi.h
> > @@ -50,6 +50,8 @@
> > #define ASUS_WMI_DEVID_LED5 0x00020015
> > #define ASUS_WMI_DEVID_LED6 0x00020016
> > #define ASUS_WMI_DEVID_MICMUTE_LED 0x00040017
> > +#define ASUS_WMI_DEVID_CAMERA_LED_NEG 0x00060078
> > +#define ASUS_WMI_DEVID_CAMERA_LED 0x00060079
> >  
> > /* Backlight and Brightness */
> > #define ASUS_WMI_DEVID_ALS_ENABLE 0x00050001 /* Ambient Light Sensor */
> > -- 
> > 2.45.2
> > 
> 
> If Hans and Ilpo have no other comments regarding the written C code:
> 
> Signed-off-by: Luke D. Jones <luke@...nes.dev>

Luke,

As I've seen you use S-o-b tag a few times like this, do you actually mean 
Reviewed-by: tag which tells you've looked through the change and think 
it's good/useful for the kernel?

S-o-b relates to authorship of the code in the patch (and should be 
there right from the submission, not added like this).

-- 
 i.