HID: lenovo: Map mic-mute button to KEY_F20 instead of KEY_MICMUTE

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>

diff --git a/drivers/hid/hid-lenovo.c b/drivers/hid/hid-lenovo.c
index 6687626..2cf89b8 100644 (file)
--- 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);