20 Oct, 2017
2 commits
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Let's allow matching input devices on their property bits, both in-kernel
and when generating module aliases.Tested-by: Roderick Colenbrander
Signed-off-by: Dmitry Torokhov -
Factor out and export input_match_device_id() so that modules may use it.
It will be needed by joydev to blacklist accelerometers in composite
devices.Tested-by: Roderick Colenbrander
Signed-off-by: Dmitry Torokhov
22 Sep, 2017
1 commit
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Normally, when input device supporting force feedback effects is being
destroyed, we try to "flush" currently playing effects, so that the
physical device does not continue vibrating (or executing other effects).
Unfortunately this does not work well for uinput as flushing of the effects
deadlocks with the destroy action:- if device is being destroyed because the file descriptor is being closed,
then there is noone to even service FF requests;- if device is being destroyed because userspace sent UI_DEV_DESTROY,
while theoretically it could be possible to service FF requests,
userspace is unlikely to do so (they'd need to make sure FF handling
happens on a separate thread) even if kernel solves the issue with FF
ioctls deadlocking with UI_DEV_DESTROY ioctl on udev->mutex.To avoid lockups like the one below, let's install a custom input device
flush handler, and avoid trying to flush force feedback effects when we
destroying the device, and instead rely on uinput to shut off the device
properly.NMI watchdog: Watchdog detected hard LOCKUP on cpu 3
...
<> [] _raw_spin_lock_irqsave+0x37/0x40
[] complete+0x1d/0x50
[] uinput_request_done+0x3c/0x40 [uinput]
[] uinput_request_submit.part.7+0x47/0xb0 [uinput]
[] uinput_dev_erase_effect+0x5b/0x76 [uinput]
[] erase_effect+0xad/0xf0
[] flush_effects+0x4d/0x90
[] input_flush_device+0x40/0x60
[] evdev_cleanup+0xac/0xc0
[] evdev_disconnect+0x2b/0x60
[] __input_unregister_device+0xac/0x150
[] input_unregister_device+0x47/0x70
[] uinput_destroy_device+0xb5/0xc0 [uinput]
[] uinput_ioctl_handler.isra.9+0x65e/0x740 [uinput]
[] ? do_futex+0x12b/0xad0
[] uinput_ioctl+0x18/0x20 [uinput]
[] do_vfs_ioctl+0x298/0x480
[] ? security_file_ioctl+0x43/0x60
[] SyS_ioctl+0x79/0x90
[] entry_SYSCALL_64_fastpath+0x12/0x71Reported-by: Rodrigo Rivas Costa
Reported-by: Clément VUCHENER
Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=193741
Signed-off-by: Dmitry Torokhov
14 Jul, 2016
1 commit
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This patch fix a double word "is is" found in in
Documentation/DocBook/device-drivers.xml.
It is because the file was created from comments in sources,
so I have to fix the double words in include/linux/input.hSigned-off-by: Masanari Iida
Signed-off-by: Dmitry Torokhov
14 Oct, 2015
1 commit
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Add new function input_enable_softrepeat() that allows drivers to
initialize their own values for input_dev->rep[REP_DELAY] and
input_dev->rep[REP_PERIOD], but also use the software autorepeat
functionality from input.c.For example, a HID driver could do:
static void xyz_input_configured(struct hid_device *hid,
struct hid_input *hidinput)
{
input_enable_softrepeat(hidinput->input, 400, 100);
}static struct hid_driver xyz_driver = {
.input_configured = xyz_input_configured,
}Signed-off-by: Petri Gynther
Signed-off-by: Dmitry Torokhov
10 Nov, 2012
1 commit
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Fixes kernel-doc warnings for the members added in 3.7-rc1.
Signed-off-by: Henrik Rydberg
Signed-off-by: Dmitry Torokhov
09 Nov, 2012
1 commit
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There is a demand from driver's writers to use managed devices framework
for their drivers. Unfortunately up to this moment input devices did not
provide support for managed devices and that lead to mixing two styles
of resource management which usually introduced more bugs, such as
manually unregistering input device but relying in devres to free
interrupt handler which (unless device is properly shut off) can cause
ISR to reference already freed memory.This change introduces devm_input_allocate_device() that will allocate
managed instance of input device so that driver writers who prefer
using devm_* framework do not have to mix 2 styles.Reviewed-by: Henrik Rydberg
Reviewed-by: Tejun Heo
Signed-off-by: Dmitry Torokhov
13 Oct, 2012
1 commit
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Signed-off-by: David Howells
Acked-by: Arnd Bergmann
Acked-by: Thomas Gleixner
Acked-by: Michael Kerrisk
Acked-by: Paul E. McKenney
Acked-by: Dave Jones
09 Oct, 2012
1 commit
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Extend the amount of character devices, such as eventX, mouseX and jsX,
from a hard limit of 32 per input handler to about 1024 shared across
all handlers.To be compatible with legacy installations input handlers will start
creating char devices with minors in their legacy range, however once
legacy range is exhausted they will start allocating minors from the
dynamic range 256-1024.Reviewed-by: David Herrmann
Signed-off-by: Dmitry Torokhov
20 Sep, 2012
2 commits
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On heavy event loads, such as a multitouch driver, the irqsoff latency
can be as high as 250 us. By accumulating a frame worth of data
before passing it on, the latency can be dramatically reduced. As a
side effect, the special EV_SYN handling can be removed, since the
frame is now atomic.This patch adds the events() handler callback and uses it if it
exists. The latency is improved by 50 us even without the callback.Cc: Daniel Kurtz
Tested-by: Benjamin Tissoires
Tested-by: Ping Cheng
Tested-by: Sedat Dilek
Acked-by: Dmitry Torokhov
Signed-off-by: Henrik Rydberg -
Move all MT-related things to a separate place. This saves some
bytes for non-mt input devices, and prepares for new MT features.Reviewed-and-tested-by: Benjamin Tissoires
Tested-by: Ping Cheng
Acked-by: Dmitry Torokhov
Signed-off-by: Henrik Rydberg
08 Jul, 2012
1 commit
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atmel_mxt_ts driver by Daniel and MT protocol addition for win8 devices.
Conflicts:
drivers/input/touchscreen/atmel_mxt_ts.c
05 Jul, 2012
1 commit
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The newly released HID protocol for win8 multitouch devices is capable
of transmitting more information about each touch. In particular, it
includes details useful for touch alignment. This patch completes the
MT protocol with the ABS_MT_TOOL_X/Y events, and documents how to map
win8 devices.Cc: Stephane Chatty
Cc: Benjamin Tissoires
Cc: Peter Hutterer
Acked-by: Chase Douglas
Signed-off-by: Henrik Rydberg
12 Jun, 2012
1 commit
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Fix kernel-doc warning in input.h:
Warning(include/linux/input.h:140): No description found for parameter 'len'
Signed-off-by: Randy Dunlap
Signed-off-by: Dmitry Torokhov
10 Mar, 2012
1 commit
09 Feb, 2012
1 commit
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This patch adds the ability to extract MT slot data via a new ioctl,
EVIOCGMTSLOTS. The function returns an array of slot values for the
specified ABS_MT event type.Example of user space usage:
struct { unsigned code; int values[64]; } req;
req.code = ABS_MT_POSITION_X;
if (ioctl(fd, EVIOCGMTSLOTS(sizeof(req)), &req) < 0)
return -1;
for (i = 0; i < 64; i++)
printf("slot %d: %d\n", i, req.values[i]);Reviewed-by: Chase Douglas
Signed-off-by: Henrik Rydberg
03 Feb, 2012
1 commit
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As noted by Arve and others, since wall time can jump backwards, it is
difficult to use for input because one cannot determine if one event
occurred before another or for how long a key was pressed.However, the timestamp field is part of the kernel ABI, and cannot be
changed without possibly breaking existing users.This patch adds a new IOCTL that allows a clockid to be set in the
evdev_client struct that will specify which time base to use for event
timestamps (ie: CLOCK_MONOTONIC instead of CLOCK_REALTIME).For now we only support CLOCK_MONOTONIC and CLOCK_REALTIME, but
in the future we could support other clockids if appropriate.The default remains CLOCK_REALTIME, so we don't change the ABI.
Signed-off-by: John Stultz
Reviewed-by: Daniel Kurtz
Signed-off-by: Dmitry Torokhov
29 Oct, 2011
1 commit
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (549 commits)
ALSA: hda - Fix ADC input-amp handling for Cx20549 codec
ALSA: hda - Keep EAPD turned on for old Conexant chips
ALSA: hda/realtek - Fix missing volume controls with ALC260
ASoC: wm8940: Properly set codec->dapm.bias_level
ALSA: hda - Fix pin-config for ASUS W90V
ALSA: hda - Fix surround/CLFE headphone and speaker pins order
ALSA: hda - Fix typo
ALSA: Update the sound git tree URL
ALSA: HDA: Add new revision for ALC662
ASoC: max98095: Convert codec->hw_write to snd_soc_write
ASoC: keep pointer to resource so it can be freed
ASoC: sgtl5000: Fix wrong mask in some snd_soc_update_bits calls
ASoC: wm8996: Fix wrong mask for setting WM8996_AIF_CLOCKING_2
ASoC: da7210: Add support for line out and DAC
ASoC: da7210: Add support for DAPM
ALSA: hda/realtek - Fix DAC assignments of multiple speakers
ASoC: Use SGTL5000_LINREG_VDDD_MASK instead of hardcoded mask value
ASoC: Set sgtl5000->ldo in ldo_regulator_register
ASoC: wm8996: Use SND_SOC_DAPM_AIF_OUT for AIF2 Capture
ASoC: wm8994: Use SND_SOC_DAPM_AIF_OUT for AIF3 Capture
...
13 Oct, 2011
1 commit
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The problem here is that max_effects can wrap on 32 bits systems.
We'd allocate a smaller amount of data than sizeof(struct ff_device).
The call to kcalloc() on the next line would fail but it would write
the NULL return outside of the memory we just allocated causing data
corruption.The call path is that uinput_setup_device() get ->ff_effects_max from
the user and sets the value in the ->private_data struct. From there
it is:
-> uinput_ioctl_handler()
-> uinput_create_device()
-> input_ff_create(dev, udev->ff_effects_max);I've also changed ff_effects_max so it's an unsigned int instead of
a signed int as a cleanup.Signed-off-by: Dan Carpenter
Signed-off-by: Dmitry Torokhov
05 Oct, 2011
1 commit
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Similar to Line Out, these constants form the base for future
patches enabling input jack reporting for Line in jacks.Signed-off-by: David Henningsson
Acked-by: Mark Brown
Signed-off-by: Takashi Iwai
08 Sep, 2011
1 commit
24 Aug, 2011
1 commit
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"4-finger scroll" is a gesture supported by some applications and
operating systems."Resting thumb" is when a clickpad user rests a finger (e.g., a
thumb), in a "click zone" (typically the bottom of the touchpad) in
anticipation of click+move=select gestures.Thus, "4-finger scroll + resting thumb" is a 5-finger gesture.
To allow userspace to detect this gesture, we send BTN_TOOL_QUINTTAP.Signed-off-by: Daniel Kurtz
Acked-by: Chase Douglas
Acked-by: Henrik Rydberg
Signed-off-by: Dmitry Torokhov
06 Aug, 2011
1 commit
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I suspect that this works on T410.
Signed-off-by: Andy Lutomirski
Signed-off-by: Matthew Garrett
05 Jul, 2011
1 commit
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Put parentheses around macro argument uses. This avoids pitfalls
for the programmer, where the argument expansion does not give the
expected result, for example:ioctl (fd, EVIOCGABS (have_mt ? ABS_MT_POSITION_X : ABS_X), &abs);
Signed-off-by: Simon Budig
Signed-off-by: Dmitry Torokhov
19 Apr, 2011
1 commit
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: xen-kbdfront - fix mouse getting stuck after save/restore
Input: estimate number of events per packet
Input: evdev - indicate buffer overrun with SYN_DROPPED
Input: document event types and codes and their intended use
Input: add KEY_IMAGES specifically for AL Image Browser
Input: twl4030_keypad - fix potential NULL dereference in twl4030_kp_probe()
Input: h3600_ts - fix error handling at connect
Input: twl4030_keypad - avoid potential NULL-pointer dereference
13 Apr, 2011
2 commits
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Add a new EV_SYN code, SYN_DROPPED, to inform the client when input
events have been dropped from the evdev input buffer due to a
buffer overrun. The client should use this event as a hint to
reset its state or ignore all following events until the next
packet begins.Signed-off-by: Jeff Brown
[dtor@mail.ru: Implement Henrik's suggestion and drop old events in
case of overflow.]
Signed-off-by: Dmitry Torokhov -
Many media center remotes have buttons intended for jumping straight to
one type of media browser or another -- commonly, images/photos/pictures,
audio/music, television, and movies. At present, remotes with an images
or photos or pictures button use any number of different keycodes which
sort of maybe fit. I've seen at least KEY_MEDIA, KEY_CAMERA,
KEY_GRAPHICSEDITOR and KEY_PRESENTATION. None of those seem quite right.
In my mind, KEY_MEDIA should be something more like a media center
application launcher (and I'd like to standardize on that for things
like the windows media center button on the mce remotes). KEY_CAMERA is
used in a lot of webcams, and typically means "take a picture now".
KEY_GRAPHICSEDITOR implies an editor, not a browser. KEY_PRESENTATION
might be the closest fit here, if you think "photo slide show", but it
may well be more intended for "run application in full-screen
presentation mode" or to launch something like magicpoint, I dunno.
And thus, I'd like to have a KEY_IMAGES, which matches the HID Usage AL
Image Browser, the meaning of which I think is crystal-clear. I believe
AL Audio Browser is already covered by KEY_AUDIO, and AL Movie Browser
by KEY_VIDEO, so I'm also adding appropriate comments next to those
keys.Signed-off-by: Jarod Wilson
Signed-off-by: Dmitry Torokhov
28 Mar, 2011
1 commit
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These keys are supposed to be handled by any software
using the camera (like webKam or cheese...). They can
also be used to actually move the camera when possible.Signed-off-by: Corentin Chary
Signed-off-by: Matthew Garrett
01 Feb, 2011
1 commit
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All users of old style get/setkeycode methids have been converted so
it is time to retire them.Acked-by: Mauro Carvalho Chehab
Acked-by: Jiri Kosina
Signed-off-by: Dmitry Torokhov
14 Jan, 2011
1 commit
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: add SW_ROTATE_LOCK switch type
Input: fix force feedback capability query example
Input: wacom_w8001 - add single-touch support
Input: add Austria Microsystem AS5011 joystick driver
Input: remove aaed2000 keyboard driver
Input: i8042 - introduce 'notimeout' blacklist for Dell Vostro V13
Input: cy8ctmg110_ts - Convert to dev_pm_ops
Input: migor_ts - convert to dev_pm_ops
Input: mcs5000_ts - convert to dev_pm_ops
Input: eeti_ts - convert to dev_pm_ops
Input: ad7879 - convert I2C to dev_pm_ops
12 Jan, 2011
2 commits
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This switch is used to signal that user want to disable screen
transitions from portrait to landscape mode and back.Signed-off-by: Jekyll Lai
Signed-off-by: Alan Cox
Signed-off-by: Dmitry Torokhov
08 Jan, 2011
1 commit
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (58 commits)
Input: wacom_w8001 - support pen or touch only devices
Input: wacom_w8001 - use __set_bit to set keybits
Input: bu21013_ts - fix misuse of logical operation in place of bitop
Input: i8042 - add Acer Aspire 5100 to the Dritek list
Input: wacom - add support for digitizer in Lenovo W700
Input: psmouse - disable the synaptics extension on OLPC machines
Input: psmouse - fix up Synaptics comment
Input: synaptics - ignore bogus mt packet
Input: synaptics - add multi-finger and semi-mt support
Input: synaptics - report clickpad property
input: mt: Document interface updates
Input: fix double equality sign in uevent
Input: introduce device properties
hid: egalax: Add support for Wetab (726b)
Input: include MT library as source for kerneldoc
MAINTAINERS: Update input-mt entry
hid: egalax: Add support for Samsung NB30 netbook
hid: egalax: Document the new devices in Kconfig
hid: egalax: Add support for Wetab
hid: egalax: Convert to MT slots
...Fixed up trivial conflict in drivers/input/keyboard/Kconfig
07 Jan, 2011
1 commit
-
Conflicts:
include/linux/input.h
29 Dec, 2010
1 commit
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The patch fixes the rc-tbs-nec table after converting
drivers/media/video/cx88 to ir-core
(commit ba7e90c9f878e0ac3c0614a5446fe5c62ccc33ec).It is also adds two missing buttons (10- and 10+) with
its definition (KEY_10CHANNELSUP and KEY_10CHANNELSDOWN).[mchehab@redhat.com: move keycode numbers to 0x1b8/0x1b9 as requested by the input Maintainer]
Signed-off-by: Mariusz Białończyk
Signed-off-by: Mauro Carvalho Chehab
28 Dec, 2010
1 commit
20 Dec, 2010
1 commit
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Today, userspace sets up an input device based on the data it emits.
This is not always enough; a tablet and a touchscreen may emit exactly
the same data, for instance, but the former should be set up with a
pointer whereas the latter does not need to. Recently, a new type of
touchpad has emerged where the buttons are under the pad, which
changes logic without changing the emitted data. This patch introduces
a new ioctl, EVIOCGPROP, which enables user access to a set of device
properties useful during setup. The properties are given as a bitmap
in the same fashion as the event types, and are also made available
via sysfs, uevent and /proc/bus/input/devices.Acked-by: Ping Cheng
Acked-by: Chase Douglas
Acked-by: Dmitry Torokhov
Signed-off-by: Henrik Rydberg
17 Dec, 2010
1 commit
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Conflicts:
drivers/input/Makefile
16 Dec, 2010
2 commits
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Touch devices capable of hovering, i.e., fingers detected a
distance from the surface, are not supported by the current
input MT protocol. This patch adds ABS_MT_DISTANCE, which may
be used to indicate the distance between the contact and the
surface.Signed-off-by: Henrik Rydberg
-
The drivers using the type B protocol all report tracking information
the same way. The contact id is semantically equivalent to
ABS_MT_SLOT, and the handling of ABS_MT_TRACKING_ID only complicates
the driver. The situation can be improved upon by providing a common
pointer emulation code, thereby removing the need for the tracking id
in the driver. This patch moves all tracking event handling over to
the input core, simplifying both the existing drivers and the ones
currently in preparation.Acked-by: Ping Cheng
Acked-by: Jiri Kosina
Signed-off-by: Henrik Rydberg