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path: root/sys/dev/evdev/evdev_private.h
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2025-12-01evdev: Allow setting of character device ownership and access modeVladimir Kondratyev
by device driver. That is required as game pad and joystick events have to be accessible by ordinary users. MFC after: 1 month
2023-08-16sys: Remove $FreeBSD$: two-line .h patternWarner Losh
Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/
2021-08-25evdev: Add implicit mode for touch tracking.Vladimir Kondratyev
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
2021-08-25evdev: Make MT tracking IDs monotonically increasing sequence.Vladimir Kondratyev
MFC after: 2 weeks
2021-08-25evdev: Multitouch code style changes.Vladimir Kondratyev
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
2021-08-17evdev: Use bit_foreach helper macroVladimir Kondratyev
for traversing all bits set in the bitstring(9). While here move bit_change() definition to common header. MFC after: 1 week
2021-01-08evdev: Allow open() handler to be interrupted by a signalVladimir Kondratyev
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)
2021-01-08evdev: Make open(2) and close(3) handlers sleepable.Vladimir Kondratyev
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
2019-05-20Extract eventfilter declarations to sys/_eventfilter.hConrad Meyer
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. Notes: svn path=/head/; revision=347984
2019-02-24evdev: export event device properties through sysctl interfaceVladimir Kondratyev
A big security advantage of Wayland is not allowing applications to read input devices all the time. Having /dev/input/* accessible to the user account subverts this advantage. libudev-devd was opening the evdev devices to detect their types (mouse, keyboard, touchpad, etc). This don't work if /dev/input/* is inaccessible. With the kernel exposing this information as sysctls (kern.evdev.input.*), we can work w/o /dev/input/* access, preserving the Wayland security model. Submitted by: Greg V <greg@unrelenting.technology> Reviewed by: wulf, imp MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D18694 Notes: svn path=/head/; revision=344494
2018-10-27evdev: disable evdev if it is invoked from KDB or panic contextVladimir Kondratyev
This allow to prevent deadlock on entering KDB if one of evdev locks is already taken by userspace process. Also this change discards all but LED console events produced by KDB as unrelated to userspace. Tested by: dumbbell (as part of D15070) Objected by: bde (as 'KDB lock an already locked mutex' problem solution) MFC after: 1 month Notes: svn path=/head/; revision=339824
2018-10-27evdev: Use console lock as evdev lock for all supported keyboard drivers.Vladimir Kondratyev
Now evdev part of keyboard drivers does not take any locks if corresponding input/eventN device node is not opened by userland consumers. Do not assert console lock inside evdev to handle the cases when keyboard driver is called from some special single-threaded context like shutdown thread. Notes: svn path=/head/; revision=339823
2017-07-23Change my email address to wulf@FreeBSD.org in copyright headers.Vladimir Kondratyev
Approved by: gonzo (mentor) MFC after: 2 weeks Notes: svn path=/head/; revision=321399
2017-07-23evdev: Macroize common locking sequencesVladimir Kondratyev
Reviewed by: gonzo Approved by: gonzo (mentor) MFC after: 2 weeks Notes: svn path=/head/; revision=321398
2017-07-23evdev: style(9), sort headers alphabeticallyVladimir Kondratyev
Pointed out by: bde Reviewed by: gonzo Approved by: gonzo (mentor) MFC after: 2 weeks Notes: svn path=/head/; revision=321397
2016-10-08Implement EVDEV_FLAG_MT_AUTOREL flag (autorelease touchpoints)Oleksandr Tymoshenko
Automaticaly release (send ABS_MT_TRACKING_ID = -1) MT-slots that has not been listed in current MT protocol type B report. Slot is counted as listed if corresponding ABS_MT_SLOT event has been sent regardless of other MT events. Events are sent on SYN_REPORT event. Submitted by: Vladimir Kondratiev <wulf@cicgroup.ru> Notes: svn path=/head/; revision=306857
2016-10-08Allow using of driver's mutex instead internal one for evdev locking.Oleksandr Tymoshenko
Add new API call: evdev_register_mtx which takes lock argument that should be used instead of internal one for evdev locking. Useful for cases if evdev_push_event() is always called with driver's lock taken and reduces amount of lock aquisitions. This allows to avoid LOR between ev_open/ev_close invocations and evdev_push_event() Such LOR can happen when ev_open/ev_close methods acquire driver lock and evdev_push_event() is called with this lock taken. Submitted by: Vladimir Kondratiev <wulf@cicgroup.ru> Notes: svn path=/head/; revision=306855
2016-10-03const-ify struct evdev_methodsOleksandr Tymoshenko
Submitted by: Vladimir Kondratiev <wulf@cicgroup.ru> Suggested by: hselasky Notes: svn path=/head/; revision=306647
2016-09-11Add evdev protocol implementationOleksandr Tymoshenko
evdev is a generic input event interface compatible with Linux evdev API at ioctl level. It allows using unmodified (apart from header name) input evdev drivers in Xorg, Wayland, Qt. This commit has only generic kernel API. evdev support for individual hardware drivers like ukbd, ums, atkbd, etc. will be committed later. Project was started by Jakub Klama as part of GSoC 2014. Jakub's evdev implementation was later used as a base, updated and finished by Vladimir Kondratiev. Submitted by: Vladimir Kondratiev <wulf@cicgroup.ru> Reviewed by: adrian, hans Differential Revision: https://reviews.freebsd.org/D6998 Notes: svn path=/head/; revision=305706
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