src/sys/dev/evdev/evdev_private.h, branch main

evdev: add devnum sysctl

2026-06-14T16:34:51Z

Add a sysctl entry for the evdev device number (devnum) to allow libudev-devd to populate the corresponding device information fields (MAJOR and MINOR) when running in a jail with no input devices exposed through devfs. Signed-off-by: Quentin Thébault Reviewed by: wulf Sponsored by: Defenso MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D56968

evdev: Allow setting of character device ownership and access mode

2025-12-01T20:42:14Z

by device driver. That is required as game pad and joystick events have to be accessible by ordinary users. MFC after: 1 month

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

2023-08-16T17:54:11Z

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

evdev: Add implicit mode for touch tracking.

2021-08-24T22:52:37Z

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

evdev: Make MT tracking IDs monotonically increasing sequence.

2021-08-24T22:48:33Z

MFC after: 2 weeks

evdev: Multitouch code style changes.

2021-08-24T22:43:41Z

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

evdev: Use bit_foreach helper macro

2021-08-16T21:29:47Z

for traversing all bits set in the bitstring(9). While here move bit_change() definition to common header. MFC after: 1 week

evdev: Allow open() handler to be interrupted by a signal

2021-01-07T23:18:42Z

It is possible that the client list lock is taken by other process for too long due to e.g. IO timeouts. Allow user to terminate open() in this case. Reviewed by: markj (as part of D27865)

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

2021-01-07T23:18:41Z

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

Extract eventfilter declarations to sys/_eventfilter.h

2019-05-20T00:38:23Z

This allows replacing "sys/eventfilter.h" includes with "sys/_eventfilter.h" in other header files (e.g., sys/{bus,conf,cpu}.h) and reduces header pollution substantially. EVENTHANDLER_DECLARE and EVENTHANDLER_LIST_DECLAREs were moved out of .c files into appropriate headers (e.g., sys/proc.h, powernv/opal.h). As a side effect of reduced header pollution, many .c files and headers no longer contain needed definitions. The remainder of the patch addresses adding appropriate includes to fix those files. LOCK_DEBUG and LOCK_FILE_LINE_ARG are moved to sys/_lock.h, as required by sys/mutex.h since r326106 (but silently protected by header pollution prior to this change). No functional change (intended). Of course, any out of tree modules that relied on header pollution for sys/eventhandler.h, sys/lock.h, or sys/mutex.h inclusion need to be fixed. __FreeBSD_version has been bumped.