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authorRoderick Colenbrander <roderick.colenbrander@sony.com>2017-03-08 02:45:00 +0300
committerJiri Kosina <jkosina@suse.cz>2017-03-21 17:11:32 +0300
commit227c011b2e046dd4d36d9e00e3d9c88097b2a4c3 (patch)
tree01d851c728388f115f941de1cd8ff5040e1d49d4 /include/uapi/linux/input.h
parent765a1077c85e5f2efcc43582f80caf43a052e903 (diff)
downloadlinux-227c011b2e046dd4d36d9e00e3d9c88097b2a4c3.tar.xz
HID: sony: Report DS4 motion sensors through a separate device
The DS4 motion sensors are currently mapped by the hid-core driver to non-existing axes in between ABS_MISC and ABS_MT_SLOT, because the device already exhausted ABS_X-ABS_RZ. For a part the mapping by hid-core is accomplished by a fixup in hid-sony as the motion axes actually use vendor specific usage pages. This patch makes the DS4 use a separate input device for the motion sensors and reports acceleration data through ABS_X-ABS_Z and gyroscope data through ABS_RX-ABS_RZ. In addition it extends the event spec to allow gyroscope data through ABS_RX-ABS_RZ when INPUT_PROP_ACCELEROMETER is set. This change was suggested by Peter Hutterer during a discussion on linux-input. [jkosina@suse.cz: rebase onto slightly newer codebase] Signed-off-by: Roderick Colenbrander <roderick.colenbrander@sony.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'include/uapi/linux/input.h')
-rw-r--r--include/uapi/linux/input.h11
1 files changed, 8 insertions, 3 deletions
diff --git a/include/uapi/linux/input.h b/include/uapi/linux/input.h
index e794f7bee22f..f561c0eb7d63 100644
--- a/include/uapi/linux/input.h
+++ b/include/uapi/linux/input.h
@@ -61,9 +61,14 @@ struct input_id {
* Note that input core does not clamp reported values to the
* [minimum, maximum] limits, such task is left to userspace.
*
- * Resolution for main axes (ABS_X, ABS_Y, ABS_Z) is reported in
- * units per millimeter (units/mm), resolution for rotational axes
- * (ABS_RX, ABS_RY, ABS_RZ) is reported in units per radian.
+ * The default resolution for main axes (ABS_X, ABS_Y, ABS_Z)
+ * is reported in units per millimeter (units/mm), resolution
+ * for rotational axes (ABS_RX, ABS_RY, ABS_RZ) is reported
+ * in units per radian.
+ * When INPUT_PROP_ACCELEROMETER is set the resolution changes.
+ * The main axes (ABS_X, ABS_Y, ABS_Z) are then reported in
+ * in units per g (units/g) and in units per degree per second
+ * (units/deg/s) for rotational axes (ABS_RX, ABS_RY, ABS_RZ).
*/
struct input_absinfo {
__s32 value;