[PATCH v3 2/2] input: Add support for "Do Not Disturb"

[Aseda Aboagye <aaboagye@chromium.org>]

HUTRR94 added support for a new usage titled "System Do Not Disturb"
which toggles a system-wide Do Not Disturb setting. This commit simply
adds a new event code for the usage.

Signed-off-by: Aseda Aboagye <aaboagye@chromium.org>
---
Changes from v2:
 - Added underscores to make `KEY_DO_NOT_DISTURB`.

Changes from v1:
 - Modified formatting to match existing code, ignoring checkpatch.pl.

 drivers/hid/hid-debug.c                | 1 +
 drivers/hid/hid-input.c                | 8 ++++++++
 include/uapi/linux/input-event-codes.h | 1 +
 3 files changed, 10 insertions(+)

diff --git a/drivers/hid/hid-debug.c b/drivers/hid/hid-debug.c
index 7749c81b6227..4ccfbd860bbe 100644
--- a/drivers/hid/hid-debug.c
+++ b/drivers/hid/hid-debug.c
@@ -975,6 +975,7 @@ static const char *keys[KEY_MAX + 1] = {
        [KEY_CAMERA_ACCESS_DISABLE] = "CameraAccessDisable",
        [KEY_CAMERA_ACCESS_TOGGLE] = "CameraAccessToggle",
        [KEY_ACCESSIBILITY] = "Accessibility",
+       [KEY_DO_NOT_DISTURB] = "DoNotDisturb",
        [KEY_DICTATE] = "Dictate",
        [KEY_MICMUTE] = "MicrophoneMute",
        [KEY_BRIGHTNESS_MIN] = "BrightnessMin",
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 1ecc5ad57b56..31feb5e0714f 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -826,6 +826,14 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
                        break;
                }
 
+               if ((usage->hid & 0xf0) == 0x90) { /* SystemControl*/
+                       switch (usage->hid & 0xf) {
+                       case 0xb: map_key_clear(KEY_DO_NOT_DISTURB); break;
+                       default: goto ignore;
+                       }
+                       break;
+               }
+
                if ((usage->hid & 0xf0) == 0xa0) {      /* SystemControl */
                        switch (usage->hid & 0xf) {
                        case 0x9: map_key_clear(KEY_MICMUTE); break;
diff --git a/include/uapi/linux/input-event-codes.h b/include/uapi/linux/input-event-codes.h
index 7ff6eeef1af0..07038fd9682d 100644
--- a/include/uapi/linux/input-event-codes.h
+++ b/include/uapi/linux/input-event-codes.h
@@ -618,6 +618,7 @@
 #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_ACCESSIBILITY              0x24e   /* Toggles the system bound accessibility UI/command (HUTRR116) */
+#define KEY_DO_NOT_DISTURB             0x24f   /* Toggles the system-wide "Do Not Disturb" control (HUTRR94)*/
 
 #define KEY_BRIGHTNESS_MIN             0x250   /* Set Brightness to Minimum */
 #define KEY_BRIGHTNESS_MAX             0x251   /* Set Brightness to Maximum */
-- 
2.45.1.288.g0e0cd299f1-goog