HID: input: add mapping for "Toggle Display" key

According to HUT 1.12 usage 0xb5 from the generic desktop page is reserved
for switching between external and internal display, so let's add the
mapping.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index ecb1b6f26853..da76358cde06 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -677,6 +677,14 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
                         break;
                 }
 
+                if ((usage->hid & 0xf0) == 0xb0) {      /* SC - Display */
+                        switch (usage->hid & 0xf) {
+                        case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break;
+                        default: goto ignore;
+                        }
+                        break;
+                }
+
                 /*
                  * Some lazy vendors declare 255 usages for System Control,
                  * leading to the creation of ABS_X|Y axis and too many others.