From: Roderick Colenbrander <roderick.colenbrander@xxxxxxxx> This new property can be set on subdevices part of a composite input device. The purpose of the constant is to notify other kernel components (e.g. joydev) and user space that a device is a composite device. Signed-off-by: Roderick Colenbrander <roderick.colenbrander@xxxxxxxx> --- Documentation/input/event-codes.rst | 12 ++++++++++++ include/uapi/linux/input-event-codes.h | 1 + 2 files changed, 13 insertions(+) diff --git a/Documentation/input/event-codes.rst b/Documentation/input/event-codes.rst index a8c0873..d56a32e 100644 --- a/Documentation/input/event-codes.rst +++ b/Documentation/input/event-codes.rst @@ -356,6 +356,18 @@ can report through the rotational axes (absolute and/or relative rx, ry, rz). All other axes retain their meaning. A device must not mix regular directional axes and accelerometer axes on the same event node. +INPUT_PROP_COMPOSITE +-------------------- + +The functionality of some advanced input devices is exposed through several +event devices. For example a gamepad with motion sensors could be exposed as +a gamepad device with axes / buttons and a separate motion sensor device. + +The INPUT_PROP_COMPOSITE flag is set on all sub devices making up a larger +composite device. This flag allows user space applications in addition to +other kernel drivers (e.g. joydev) to easily determine whether a device +is part of a composite device. + Guidelines ========== diff --git a/include/uapi/linux/input-event-codes.h b/include/uapi/linux/input-event-codes.h index 1798910..da3fa83 100644 --- a/include/uapi/linux/input-event-codes.h +++ b/include/uapi/linux/input-event-codes.h @@ -26,6 +26,7 @@ #define INPUT_PROP_TOPBUTTONPAD 0x04 /* softbuttons at top of pad */ #define INPUT_PROP_POINTING_STICK 0x05 /* is a pointing stick */ #define INPUT_PROP_ACCELEROMETER 0x06 /* has accelerometer */ +#define INPUT_PROP_COMPOSITE 0x07 /* is part of a composite device */ #define INPUT_PROP_MAX 0x1f #define INPUT_PROP_CNT (INPUT_PROP_MAX + 1) -- 2.9.4 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
