HID: add mapping for camera access keys

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@gmail.com>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Link: https://lore.kernel.org/r/20221029120311.11152-3-erayorcunus@gmail.comSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/hid/hid-debug.c

@@ -971,6 +971,9 @@ 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",

drivers/hid/hid-input.c

@@ -1086,6 +1086,9 @@ 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;
 

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 */