linux-kernel - Re: [PATCH v2 2/7] HID: add mapping for camera access keys

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Date:   Tue, 15 Nov 2022 21:33:49 +0100
From:   Hans de Goede <hdegoede@...hat.com>
To:     Eray Orçunus <erayorcunus@...il.com>,
        platform-driver-x86@...r.kernel.org, dmitry.torokhov@...il.com
Cc:     linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
        ike.pan@...onical.com, jikos@...nel.org,
        benjamin.tissoires@...hat.com, mgross@...ux.intel.com,
        pobrn@...tonmail.com
Subject: Re: [PATCH v2 2/7] HID: add mapping for camera access keys

Hi Dmitry,

On 10/29/22 14:03, Eray Orçunus wrote:
> HUTRR72 added 3 new usage codes for keys that are supposed to enable,
> disable and toggle camera access. These are useful, considering many
> laptops today have key(s) for toggling access to camera.
> 
> This patch adds new key definitions for KEY_CAMERA_ACCESS_ENABLE,
> KEY_CAMERA_ACCESS_DISABLE and KEY_CAMERA_ACCESS_TOGGLE. Additionally
> hid-debug is adjusted to recognize this new usage codes as well.
> 
> Signed-off-by: Eray Orçunus <erayorcunus@...il.com>
> Acked-by: Dmitry Torokhov <dmitry.torokhov@...il.com>

I have rejected the drivers/platform/x86 patch which depends
on this, because it changes current behavior, potentially
breaking userspace.

Since this means I won't be taking any patches depending on
this I believe it is best if this is merged through the input tree.

Note this also has a:

Acked-by: Jiri Kosina <jkosina@...e.cz>

tag given in this email thread.

Regards,

Hans





> ---
>  drivers/hid/hid-debug.c                | 3 +++
>  drivers/hid/hid-input.c                | 3 +++
>  include/uapi/linux/input-event-codes.h | 3 +++
>  3 files changed, 9 insertions(+)
> 
> diff --git a/drivers/hid/hid-debug.c b/drivers/hid/hid-debug.c
> index f48d3534e020..991f880fdbd4 100644
> --- a/drivers/hid/hid-debug.c
> +++ b/drivers/hid/hid-debug.c
> @@ -936,6 +936,9 @@ static const char *keys[KEY_MAX + 1] = {
>  	[KEY_ASSISTANT] = "Assistant",
>  	[KEY_KBD_LAYOUT_NEXT] = "KbdLayoutNext",
>  	[KEY_EMOJI_PICKER] = "EmojiPicker",
> +	[KEY_CAMERA_ACCESS_ENABLE] = "CameraAccessEnable",
> +	[KEY_CAMERA_ACCESS_DISABLE] = "CameraAccessDisable",
> +	[KEY_CAMERA_ACCESS_TOGGLE] = "CameraAccessToggle",
>  	[KEY_DICTATE] = "Dictate",
>  	[KEY_BRIGHTNESS_MIN] = "BrightnessMin",
>  	[KEY_BRIGHTNESS_MAX] = "BrightnessMax",
> diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
> index f197aed6444a..f8e6513e77b8 100644
> --- a/drivers/hid/hid-input.c
> +++ b/drivers/hid/hid-input.c
> @@ -995,6 +995,9 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
>  		case 0x0cd: map_key_clear(KEY_PLAYPAUSE);	break;
>  		case 0x0cf: map_key_clear(KEY_VOICECOMMAND);	break;
>  
> +		case 0x0d5: map_key_clear(KEY_CAMERA_ACCESS_ENABLE);		break;
> +		case 0x0d6: map_key_clear(KEY_CAMERA_ACCESS_DISABLE);		break;
> +		case 0x0d7: map_key_clear(KEY_CAMERA_ACCESS_TOGGLE);		break;
>  		case 0x0d8: map_key_clear(KEY_DICTATE);		break;
>  		case 0x0d9: map_key_clear(KEY_EMOJI_PICKER);	break;
>  
> diff --git a/include/uapi/linux/input-event-codes.h b/include/uapi/linux/input-event-codes.h
> index 7989d9483ea7..ef392d0f943f 100644
> --- a/include/uapi/linux/input-event-codes.h
> +++ b/include/uapi/linux/input-event-codes.h
> @@ -614,6 +614,9 @@
>  #define KEY_KBD_LAYOUT_NEXT	0x248	/* AC Next Keyboard Layout Select */
>  #define KEY_EMOJI_PICKER	0x249	/* Show/hide emoji picker (HUTRR101) */
>  #define KEY_DICTATE		0x24a	/* Start or Stop Voice Dictation Session (HUTRR99) */
> +#define KEY_CAMERA_ACCESS_ENABLE	0x24b	/* Enables programmatic access to camera devices. (HUTRR72) */
> +#define KEY_CAMERA_ACCESS_DISABLE	0x24c	/* Disables programmatic access to camera devices. (HUTRR72) */
> +#define KEY_CAMERA_ACCESS_TOGGLE	0x24d	/* Toggles the current state of the camera access control. (HUTRR72) */
>  
>  #define KEY_BRIGHTNESS_MIN		0x250	/* Set Brightness to Minimum */
>  #define KEY_BRIGHTNESS_MAX		0x251	/* Set Brightness to Maximum */