linux-toradex.git/include/linux/uinput.h, branch v4.6-rc3

Input: uinput - add new UINPUT_DEV_SETUP and UI_ABS_SETUP ioctl

2015-12-19T01:48:50+00:00

This adds two new ioctls, UINPUT_DEV_SETUP and UI_ABS_SETUP, that replaces
the old device setup method (by write()'ing "struct uinput_user_dev" to the
node). The old method is not easily extendable and requires huge payloads.
Furthermore, overloading write() without properly versioned objects is
error-prone.

Therefore, we introduce two new ioctls to replace the old method.  These
ioctls support all features of the old method, plus a "resolution" field
for absinfo. Furthermore, it's properly forward-compatible to new ABS codes
and a growing "struct input_absinfo" structure.

UI_ABS_SETUP also allows user-space to skip unknown axes if not set.  There
is no need to copy the whole array temporarily into the kernel, but instead
the caller issues several ioctl where we copy each value manually.

Signed-off-by: David Herrmann 
Signed-off-by: Benjamin Tissoires 
Reviewed-by: David Herrmann 
Signed-off-by: Dmitry Torokhov

Input: uinput - add UI_GET_SYSNAME ioctl to retrieve the sysfs path

2014-02-12T23:00:34+00:00

uinput is used in the xorg-integration-tests suite and in the wayland
test suite. These automated tests suites create many virtual input
devices and then hook something to read these newly created devices.

Currently, uinput does not provide the created input device, which means
that we rely on an heuristic to guess which input node was created.
The problem is that is heuristic is subjected to races between different
uinput devices or even with physical devices. Having a way to retrieve
the sysfs path allows us to find without any doubts the event node.

Signed-off-by: Benjamin Tissoires 
Reviewed-by: David Herrmann 
Signed-off-by: Dmitry Torokhov

UAPI: (Scripted) Disintegrate include/linux

2012-10-13T09:46:48+00:00

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

Input: uinput - specify exact bit sizes on userspace APIs

2012-08-22T05:29:54+00:00

Switch to using __u32/__s32 instead of ordinary 'int' in structures
forming userspace API.

Also internally make request_id unsigned int.

Signed-off-by: Dmitry Torokhov

Input: force feedback - potential integer wrap in input_ff_create()

2011-10-13T04:13:11+00:00

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

Input: introduce device properties

2010-12-20T08:37:33+00:00

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

Input: uinput - add devname alias to allow module on-demand load

2010-08-21T07:37:40+00:00

Recent modprobe and udev versions allow to create device nodes
for modules which are not loaded. Only the first access will cause
the in-kernel module loader to pull-in the module. Systems which
never access the device node will not needlessly load the module,
and no longer need init scripts or other facilities to unconditionally
load it.

Signed-off-by: Kay Sievers 
Signed-off-by: Dmitry Torokhov

Input: use ABS_CNT rather than (ABS_MAX + 1)

2010-05-21T06:05:28+00:00

Signed-off-by: Daniel Mack 
Signed-off-by: Dmitry Torokhov

get rid of input BIT* duplicate defines

2007-10-19T18:53:42+00:00

get rid of input BIT* duplicate defines

use newly global defined macros for input layer. Also remove includes of
input.h from non-input sources only for BIT macro definiton. Define the
macro temporarily in local manner, all those local definitons will be
removed further in this patchset (to not break bisecting).
BIT macro will be globally defined (1<
Cc: 
Acked-by: Jiri Kosina 
Cc: 
Acked-by: Marcel Holtmann 
Cc: 
Acked-by: Mauro Carvalho Chehab 
Cc: 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Input: pull input.h into uinpit.h

2007-05-03T04:55:34+00:00

uinput.h relies on structures found in input.h, so pull in the header

Signed-off-by: Mike Frysinger 
Signed-off-by: Dmitry Torokhov