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-rw-r--r--Documentation/input/gamepad.rst13
-rw-r--r--drivers/hid/hid-debug.c2
-rw-r--r--include/uapi/linux/input-event-codes.h5
3 files changed, 20 insertions, 0 deletions
diff --git a/Documentation/input/gamepad.rst b/Documentation/input/gamepad.rst
index 2bba721aa20b..0c918b6f288b 100644
--- a/Documentation/input/gamepad.rst
+++ b/Documentation/input/gamepad.rst
@@ -190,6 +190,19 @@ Gamepads report the following events:
Rumble is advertised as FF_RUMBLE.
+- Grip buttons:
+
+ Many pads include buttons on the rear, usually referred to as either grip or
+ rear buttons, or paddles. These are often reprogrammable by the firmware to
+ appear as "normal" buttons, but are sometimes exposed to software too. Some
+ notable examples of this are the Steam Deck, which has R4, R5, L4, and L5 on
+ the back; the Xbox Elite pads, which have P1-P4; and the Switch 2 Pro
+ Controller, which has GL and GR.
+
+ For these controllers, BTN_GRIPR and BTN_GRIPR2 should be used for the top
+ and bottom (if present) right grip button(s), and BTN_GRIPL and BTN_GRIPL2
+ should be used for the top and bottom (if present) left grip button(s).
+
- Profile:
Some pads provide a multi-value profile selection switch. Examples include
diff --git a/drivers/hid/hid-debug.c b/drivers/hid/hid-debug.c
index 8433306148d5..3cd9c1150cdf 100644
--- a/drivers/hid/hid-debug.c
+++ b/drivers/hid/hid-debug.c
@@ -3291,6 +3291,8 @@ static const char *keys[KEY_MAX + 1] = {
[BTN_TR2] = "BtnTR2", [BTN_SELECT] = "BtnSelect",
[BTN_START] = "BtnStart", [BTN_MODE] = "BtnMode",
[BTN_THUMBL] = "BtnThumbL", [BTN_THUMBR] = "BtnThumbR",
+ [BTN_GRIPL] = "BtnGripL", [BTN_GRIPR] = "BtnGripR",
+ [BTN_GRIPL2] = "BtnGripL2", [BTN_GRIPR2] = "BtnGripR2",
[BTN_TOOL_PEN] = "ToolPen", [BTN_TOOL_RUBBER] = "ToolRubber",
[BTN_TOOL_BRUSH] = "ToolBrush", [BTN_TOOL_PENCIL] = "ToolPencil",
[BTN_TOOL_AIRBRUSH] = "ToolAirbrush", [BTN_TOOL_FINGER] = "ToolFinger",
diff --git a/include/uapi/linux/input-event-codes.h b/include/uapi/linux/input-event-codes.h
index 5a199f3d4a26..5426297d93fd 100644
--- a/include/uapi/linux/input-event-codes.h
+++ b/include/uapi/linux/input-event-codes.h
@@ -601,6 +601,11 @@
#define BTN_DPAD_LEFT 0x222
#define BTN_DPAD_RIGHT 0x223
+#define BTN_GRIPL 0x224
+#define BTN_GRIPR 0x225
+#define BTN_GRIPL2 0x226
+#define BTN_GRIPR2 0x227
+
#define KEY_ALS_TOGGLE 0x230 /* Ambient light sensor */
#define KEY_ROTATE_LOCK_TOGGLE 0x231 /* Display rotation lock */
#define KEY_REFRESH_RATE_TOGGLE 0x232 /* Display refresh rate toggle */