[PATCH 5.11 447/601] HID: lenovo: Map mic-mute button to KEY_F20 instead of KEY_MICMUTE

Greg Kroah-Hartman
2021-05-12T17:55:53Z

From: Hans de Goede <hdegoede@redhat.com>

[ Upstream commit 617103246cfd19af837e4cb614ba9f877c4f7779 ]

Mapping the mic-mute button to KEY_MICMUTE is technically correct but
KEY_MICMUTE translates to a scancode of 256 (248 + 8) under X,
which does not fit in 8 bits, so it does not work.

Because of this userspace is expecting KEY_F20 instead,
theoretically KEY_MICMUTE should work under Wayland but even
there it does not work, because the desktop-environment is
listening only for KEY_F20 and not for KEY_MICMUTE.

Fixes: bc04b37ea0ec ("HID: lenovo: Add ThinkPad 10 Ultrabook Keyboard support")
Reviewed-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hid/hid-lenovo.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/hid/hid-lenovo.c b/drivers/hid/hid-lenovo.c
index b2596ed37880..0ff03fed9770 100644
--- a/drivers/hid/hid-lenovo.c
+++ b/drivers/hid/hid-lenovo.c
@@ -33,6 +33,9 @@

#include "hid-ids.h"

+/* Userspace expects F20 for mic-mute KEY_MICMUTE does not work */
+#define LENOVO_KEY_MICMUTE KEY_F20
+
struct lenovo_drvdata {
u8 led_report[3]; /* Must be first for proper alignment */
int led_state;
@@ -134,7 +137,7 @@ static int lenovo_input_mapping_tpkbd(struct hid_device *hdev,
if (usage->hid == (HID_UP_BUTTON | 0x0010)) {
/* This sub-device contains trackpoint, mark it */
hid_set_drvdata(hdev, (void *)1);
- map_key_clear(KEY_MICMUTE);
+ map_key_clear(LENOVO_KEY_MICMUTE);
return 1;
}
return 0;
@@ -149,7 +152,7 @@ static int lenovo_input_mapping_cptkbd(struct hid_device *hdev,
(usage->hid & HID_USAGE_PAGE) == HID_UP_LNVENDOR) {
switch (usage->hid & HID_USAGE) {
case 0x00f1: /* Fn-F4: Mic mute */
- map_key_clear(KEY_MICMUTE);
+ map_key_clear(LENOVO_KEY_MICMUTE);
return 1;
case 0x00f2: /* Fn-F5: Brightness down */
map_key_clear(KEY_BRIGHTNESSDOWN);
@@ -239,7 +242,7 @@ static int lenovo_input_mapping_tp10_ultrabook_kbd(struct hid_device *hdev,
map_key_clear(KEY_FN_ESC);
return 1;
case 9: /* Fn-F4: Mic mute */
- map_key_clear(KEY_MICMUTE);
+ map_key_clear(LENOVO_KEY_MICMUTE);
return 1;
case 10: /* Fn-F7: Control panel */
map_key_clear(KEY_CONFIG);
--
2.30.2