[PATCH AUTOSEL 5.15 04/25] HID: Add Mapping for System Microphone Mute

[Sasha Levin <sashal@kernel.org>]

From: Jingyuan Liang <jingyliang@chromium.org>

[ Upstream commit 2d60f9f4f26785a00273cb81fe60eff129ebd449 ]

HUTRR110 added a new usage code for a key that is supposed to
mute/unmute microphone system-wide.

Map the new usage code(0x01 0xa9) to keycode KEY_MICMUTE.
Additionally hid-debug is adjusted to recognize this keycode as well.

Signed-off-by: Jingyuan Liang <jingyliang@chromium.org>
Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/hid-debug.c | 1 +
 drivers/hid/hid-input.c | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/drivers/hid/hid-debug.c b/drivers/hid/hid-debug.c
index f48d3534e0200..03da865e423c7 100644
--- a/drivers/hid/hid-debug.c
+++ b/drivers/hid/hid-debug.c
@@ -937,6 +937,7 @@ static const char *keys[KEY_MAX + 1] = {
 	[KEY_KBD_LAYOUT_NEXT] = "KbdLayoutNext",
 	[KEY_EMOJI_PICKER] = "EmojiPicker",
 	[KEY_DICTATE] = "Dictate",
+	[KEY_MICMUTE] = "MicrophoneMute",
 	[KEY_BRIGHTNESS_MIN] = "BrightnessMin",
 	[KEY_BRIGHTNESS_MAX] = "BrightnessMax",
 	[KEY_BRIGHTNESS_AUTO] = "BrightnessAuto",
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index f197aed6444a5..0ae959e54462b 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -709,6 +709,14 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
 			break;
 		}
 
+		if ((usage->hid & 0xf0) == 0xa0) {	/* SystemControl */
+			switch (usage->hid & 0xf) {
+			case 0x9: map_key_clear(KEY_MICMUTE); break;
+			default: goto ignore;
+			}
+			break;
+		}
+
 		if ((usage->hid & 0xf0) == 0xb0) {	/* SC - Display */
 			switch (usage->hid & 0xf) {
 			case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break;
-- 
2.39.0