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HID: sony: Report DS4 motion sensors through a separate device

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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>
This commit is contained in:
Roderick Colenbrander 2017-03-07 15:45:00 -08:00 • committed by Jiri Kosina
parent 765a1077c8
commit 227c011b2e
3 changed files with 117 additions and 296 deletions
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11
include/uapi/linux/input.h
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@ -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;