evdev: Allow setting of character device ownership and access mode

by device driver. That is required as game pad and joystick events have
to be accessible by ordinary users.

MFC after: 1 month

sysmouse(4): Add wsp(4)-style T-Axis reporting.

Neither the ums(4) nor psm(4) reporting can be used by the wsp(4)
driver, as they rely on static-length movements, while wsp(4) may need
to scroll in

sysmouse(4): Add wsp(4)-style T-Axis reporting.

Neither the ums(4) nor psm(4) reporting can be used by the wsp(4)
driver, as they rely on static-length movements, while wsp(4) may need
to scroll in large amounts per evdev event push.

This style uses a false button-5 press as an indicator that the z-axis
movement is a horizontal scroll, otherwise a vertical scroll.

Signed-off-by: Joshua Rogers <Joshua@Joshua.Hu>

show more ...

sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

evdev: Extend EVIOCGRAB ioctl scope to cover sysmouse interface

of psm(4), ums(4) and sysmouse(4) drivers.
EVIOCGRAB ioctl execution on /dev/input/event# device node gains
exclusive access to this d

evdev: Extend EVIOCGRAB ioctl scope to cover sysmouse interface

of psm(4), ums(4) and sysmouse(4) drivers.
EVIOCGRAB ioctl execution on /dev/input/event# device node gains
exclusive access to this device to caller. It is used mostly for
development purposes and remote control software. See e.g.
https://reviews.freebsd.org/D30020 which is the reason of creation
of this change.

MFC after: 2 weeks
Tested by: corvink
Differential revision: https://reviews.freebsd.org/D30542

show more ...

evdev: Fix a typo in a commit

- s/prefered/preferred/

MFC after: 3 days

evdev: Do not export multitouch functions which are unused outside evdev

evdev: Add implicit mode for touch tracking.

In implicit mode assignment of slot number and tracking id is performed
automatically on each synchronization requested by device driver.

This is done w

evdev: Add implicit mode for touch tracking.

In implicit mode assignment of slot number and tracking id is performed
automatically on each synchronization requested by device driver.

This is done with creation of intermediate buffer for multitouch events.
This buffer holds untracked events until synchronization is requested by
device driver. It is needed as touch assigment requires
knowledges of all touch positions pushed in current and previous reports.

MFC after: 2 weeks

show more ...

evdev: Import support for touch-tracking.

Touch tracking is a process of assignment of unique trackingID to each
initiated contact on the surface. Keeping the trackingIDs persistent
across multitou

evdev: Import support for touch-tracking.

Touch tracking is a process of assignment of unique trackingID to each
initiated contact on the surface. Keeping the trackingIDs persistent
across multitouch reports requires solving of so called Euclidian
Bipartite Matching problem.

This commit imports EBM-solver implementation based on Dinitz-Kronrod
algorithm to find minimum cost matching between contacts listed in two
consecutive reports.

Obtained from: OpenBSD
MFC after: 2 weeks

show more ...

evdev: Make MT tracking IDs monotonically increasing sequence.

MFC after: 2 weeks

evdev: Give short aliases to items of evdev_mt_slot array

with using of unioned anonymous structure.

Access to the same data by using different members of union generally
works despite it is not su

evdev: Give short aliases to items of evdev_mt_slot array

with using of unioned anonymous structure.

Access to the same data by using different members of union generally
works despite it is not supported by C specs.

Also add helper function to report entire slot state.

MFC after: 2 weeks

show more ...

evdev: Multitouch code style changes.

1. Move touch count reporting helpers to utils. They are not multitouch.
2. Use evdev_mt prefix for private multitouch support routines.
3. Use int instead of i

evdev: Multitouch code style changes.

1. Move touch count reporting helpers to utils. They are not multitouch.
2. Use evdev_mt prefix for private multitouch support routines.
3. Use int instead of int32_t where fixed size is not required.
4. Export some internal functions.

This change should be no-op.

MFC after: 2 weeks

show more ...

evdev: Make open(2) and close(3) handlers sleepable.

At the beginning of evdev there was a LOR between hardware driver's and
evdev client list locks as they were taken in different order at
driver's

evdev: Make open(2) and close(3) handlers sleepable.

At the beginning of evdev there was a LOR between hardware driver's and
evdev client list locks as they were taken in different order at
driver's interrupt and evdev open()/close() handlers.

The LOR was fixed with introduction of evdev_register_mtx() function
which allowed to use a hardware driver's lock as evdev client list lock.
While this works good with PS/2 and USB, this does not work with I2C.
Unlike PS/2 and USB, I2C open()/close() handlers do unbound sleeps
while waiting for I2C bus to release and while performing IO.
This change uses epoch(9) for traversing evdev client list in interrupt
handler to avoid the LOR thus making possible to convert evdev client
list lock to sleepable sx.

While here add brief locking protocol description.

Reviewed by: markj
Differential revision: https://reviews.freebsd.org/D27865

show more ...

evdev: Remove useless "initial value" parameter from evdev_support_abs()

It can not be used for setting of state of multitouch events.
If necessary, use evdev_push_event() instead of it.

Merge ^/head r337646 through r338014.

evdev: Allow setting of character device ownership and access mode

by device driver. That is required as game pad and joystick events have
to be accessible by ordinary users.

MFC after: 1 month

sysmouse(4): Add wsp(4)-style T-Axis reporting.

Neither the ums(4) nor psm(4) reporting can be used by the wsp(4)
driver, as they rely on static-length movements, while wsp(4) may need
to scroll in

sysmouse(4): Add wsp(4)-style T-Axis reporting.

Neither the ums(4) nor psm(4) reporting can be used by the wsp(4)
driver, as they rely on static-length movements, while wsp(4) may need
to scroll in large amounts per evdev event push.

This style uses a false button-5 press as an indicator that the z-axis
movement is a horizontal scroll, otherwise a vertical scroll.

Signed-off-by: Joshua Rogers <Joshua@Joshua.Hu>

show more ...

sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

evdev: Extend EVIOCGRAB ioctl scope to cover sysmouse interface

of psm(4), ums(4) and sysmouse(4) drivers.
EVIOCGRAB ioctl execution on /dev/input/event# device node gains
exclusive access to this d

evdev: Extend EVIOCGRAB ioctl scope to cover sysmouse interface

of psm(4), ums(4) and sysmouse(4) drivers.
EVIOCGRAB ioctl execution on /dev/input/event# device node gains
exclusive access to this device to caller. It is used mostly for
development purposes and remote control software. See e.g.
https://reviews.freebsd.org/D30020 which is the reason of creation
of this change.

MFC after: 2 weeks
Tested by: corvink
Differential revision: https://reviews.freebsd.org/D30542

show more ...

evdev: Fix a typo in a commit

- s/prefered/preferred/

MFC after: 3 days

evdev: Do not export multitouch functions which are unused outside evdev

evdev: Add implicit mode for touch tracking.

In implicit mode assignment of slot number and tracking id is performed
automatically on each synchronization requested by device driver.

This is done w

evdev: Add implicit mode for touch tracking.

In implicit mode assignment of slot number and tracking id is performed
automatically on each synchronization requested by device driver.

This is done with creation of intermediate buffer for multitouch events.
This buffer holds untracked events until synchronization is requested by
device driver. It is needed as touch assigment requires
knowledges of all touch positions pushed in current and previous reports.

MFC after: 2 weeks

show more ...

evdev: Import support for touch-tracking.

Touch tracking is a process of assignment of unique trackingID to each
initiated contact on the surface. Keeping the trackingIDs persistent
across multitou

evdev: Import support for touch-tracking.

Touch tracking is a process of assignment of unique trackingID to each
initiated contact on the surface. Keeping the trackingIDs persistent
across multitouch reports requires solving of so called Euclidian
Bipartite Matching problem.

This commit imports EBM-solver implementation based on Dinitz-Kronrod
algorithm to find minimum cost matching between contacts listed in two
consecutive reports.

Obtained from: OpenBSD
MFC after: 2 weeks

show more ...

evdev: Make MT tracking IDs monotonically increasing sequence.

MFC after: 2 weeks

evdev: Give short aliases to items of evdev_mt_slot array

with using of unioned anonymous structure.

Access to the same data by using different members of union generally
works despite it is not su

evdev: Give short aliases to items of evdev_mt_slot array

with using of unioned anonymous structure.

Access to the same data by using different members of union generally
works despite it is not supported by C specs.

Also add helper function to report entire slot state.

MFC after: 2 weeks

show more ...

evdev: Multitouch code style changes.

1. Move touch count reporting helpers to utils. They are not multitouch.
2. Use evdev_mt prefix for private multitouch support routines.
3. Use int instead of i

evdev: Multitouch code style changes.

1. Move touch count reporting helpers to utils. They are not multitouch.
2. Use evdev_mt prefix for private multitouch support routines.
3. Use int instead of int32_t where fixed size is not required.
4. Export some internal functions.

This change should be no-op.

MFC after: 2 weeks

show more ...