This patch supports the separate handling of the USB transfer buffer length
and the length of the buffer used for multi packet support. For devices
supporting multiple report or diagnostic packets, the USB transfer size is now
limited to the USB endpoints wMaxPacketSize - otherwise it defaults to the
configured report packet size as before.

This fixes an issue where event reporting can be delayed for an arbitrary
time for multi packet devices. For instance the report size for eGalax devices
is defined to the 16 byte maximum diagnostic packet size as opposed to the 5
byte report packet size. In case the driver requests 16 byte from the USB
interrupt endpoint, the USB host controller driver needs to split up the
request into 2 accesses according to the endpoints wMaxPacketSize of 8 byte.
When the first transfer is answered by the eGalax device with not less than
the full 8 byte requested, the host controller has got no way of knowing
whether the touch controller has got additional data queued and will issue
the second transfer. If per example a liftoff event finishes at such a
wMaxPacketSize boundary, the data will not be available to the usbtouch driver
until a further event is triggered and transfered to the host. From user
perspective the BTN_TOUCH release event in this case is stuck until the next
touch down event.
Signed-off-by: Christian Engelmayer <christian.engelmayer@frequentis.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

We will never use packet_id before initializing it as we start with
"need_blobs == -1" and will set packet_id there.

Also use le32_to_cpu when fetching header->packet_id.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Many notebooks have a special button for enabling/disabling ambient
light sensor.
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

For exmaple, keycode: KEY_OK(0x160) is changed by "and" operation with
KEY_MAX(0x2ff) to KEY_KPENTER(96).
Signed-off-by: Andrew Liu <andrew.liu200917@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Second round of input updates for 3.13.

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

The transaction task here is hp_sdc_tasklet() and it releases the lock.
The problem is if we aren't able to queue the transaction then we need
to release the lock ourselves.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Remove unnecessary work pending test before calling schedule_work().  It
has been tested in queue_work_on() already.
Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>
Reviewed-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

This patch adds support for the built-in multitouch sensor in the Samsung
SUR40 touchscreen device, also known as Microsoft Surface 2.0 or Microsoft
Pixelsense. Support for raw video output from the sensor as well as the
accelerometer will be added in a later patch.
Signed-off-by: Florian Echtler <floe@butterbrot.org>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Reviewed-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Merge first round of changes for 3.13 merge window.

This reverts commit 5beea882 as it
breaks trackpoint operation on XT2.

Add missing nodes for the touchscreen available on AM335x EVM SK.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

There was a spelling mistake on TSC/ADC binding where "coordinate" was
spelled as "coordiante".

We can't simply fix the error due to DT being an ABI, the approach taken
was to first use correct spelling and if that fails, fall back to
miss-spelled version.

It's unfortunate that has creeped into the tree.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

This patch fixes coccinelle error regarding usage of IS_ERR and
PTR_ERR instead of PTR_ERR_OR_ZERO.
Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Add missing i2c_set_clientdata() in mma8450_probe(), otherwise
calling i2c_get_clientdata() in mma8450_remove() returns NULL.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Add missing i2c_set_clientdata() in mpu3050_probe(), otherwise
calling i2c_get_clientdata() in mpu3050_remove() returns NULL.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

There is a bug in keypad_probe() where we do:

	kp->irq_press   = platform_get_irq_byname(pdev, "press");
	kp->irq_release = platform_get_irq_byname(pdev, "release");
	if (kp->irq_press < 0 || kp->irq_release < 0) {

The problem is that these irq variables are unsigned so the error
handling doesn't work.  I've changed them to signed values.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

This adds a driver for touchscreens using the zforce infrared
technology from Neonode connected via i2c to the host system.

It supports multitouch with up to two fingers and tracking of the
contacts in hardware.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Renesas ARM platforms are transitioning from single-platform to
multi-platform kernels using the new ARCH_SHMOBILE_MULTI. Make the
driver available on all ARM platforms to enable it on both ARCH_SHMOBILE
and ARCH_SHMOBILE_MULTI, and increase build testing coverage with
COMPILE_TEST.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

dev->hint_events_per_packet is guaranteed to be >= packet_size.
so an extra max() call is not needed.
Signed-off-by: Kang Hu <hukangustc@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Moust (if not all) modern software, including X, uses /dev/eventX rather than
the legacy /dev/mouseX devices. It therefore makes sense for general-purpose
(distro) kernels to use MOUSEDV=m (or even n), so let's drop the EXPERT=y
requirement.
Signed-off-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

There is plenty of consumer hardware (e.g., mac books) that does not use AT
keyboards or PS/2 mice. It therefore makes sense for distro kernels to
build the related drivers as modules to avoid loading them on hardware that
does not need them. As such, these options should no longer be protected by
EXPERT.

Moreover, building these drivers as modules gets rid of the following ugly
error during boot:

[    2.337745] i8042: PNP: No PS/2 controller found. Probing ports directly.
[    3.439537] i8042: No controller found
Signed-off-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

This allows the module to be autoloaded in the common case.

In order to work on non-PnP systems the module should be compiled in or
loaded unconditionally at boot (c.f. modules-load.d(5)), as before.
Signed-off-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

evdev always tries to allocate the event buffer for clients using
kzalloc rather than vmalloc, presumably to avoid mapping overhead where
possible.  However, drivers like bcm5974, which claims support for
reporting 16 fingers simultaneously, can have an extraordinarily large
buffer.  The resultant contiguous order-4 allocation attempt fails due
to fragmentation, and the device is thus unusable until reboot.

Try kzalloc if we can to avoid the mapping overhead, but if that fails,
fall back to vzalloc.
Signed-off-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

If hardware (or firmware) detects palm on the surface of the device it does
not mean that the data packet is bad from the protocol standpoint. Instead
of reporting PSMOUSE_BAD_DATA in this case simply threat it as if nothing
touches the surface.

BugLink: http://bugs.launchpad.net/bugs/1229361Signed-off-by: Joseph Salisbury <joseph.salisbury@canonical.com>
Tested-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Get rid of unnecessary (void *) casting in 'cypress_init' function.
Signed-off-by: Geyslan G. Bem <geyslan@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

This patch adds support for touchpad found on Dell XT2. It's a dual device
with device ID: 73, 00, 14, that comply with "ALPS_PROTO_V2".
Signed-off-by: Yunkang Tang <yunkang.tang@cn.alps.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

This patch adds a PWM dependency to configure the INPUT_MAX8997_HAPTIC
and INPUT_PWM_BEEPER. Without this patch, build system can lead to build
failure. This was observed during randconfig testing, in which
INPUT_MAX8997_HAPTIC or INPUT_PWM_BEEPER was enabled w/o PWM being
enabled, leading to the following errors:

init/built-in.o
drivers/built-in.o: In function `max8997_haptic_disable':
:(.text+0x1073a0): undefined reference to `pwm_disable'
drivers/built-in.o: In function `max8997_haptic_remove':
:(.text+0x1073fc): undefined reference to `pwm_free'
drivers/built-in.o: In function `max8997_haptic_play_effect_work':
:(.text+0x1074f0): undefined reference to `pwm_config'
:(.text+0x1075b0): undefined reference to `pwm_enable'
drivers/built-in.o: In function `max8997_haptic_probe':
:(.text+0x1076f8): undefined reference to `pwm_request'
:(.text+0x1077e8): undefined reference to `pwm_free'
drivers/built-in.o: In function `pwm_beeper_resume':
:(.text+0x1081a4): undefined reference to `pwm_config'
make: *** [vmlinux] Error 1
Signed-off-by: Manjunath Goudar <csmanjuvijay@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Change the dev2's name from "PS/2 Mouse" to "ALPS PS/2 Device".
Signed-off-by: Yunkang Tang <yunkang.tang@cn.alps.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Some multi-interface devices support expresskeys on a separate interface,
such as Bamboo; some multi-interface devices do not support touch at all,
such as Pen only Intuos5. Make sure we report the right device names.
Tested-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Used in the Fujitsu T732
Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Filip Zarnecki <Filip.Zarnecki@fuw.edu.pl>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

This will stop UPower from detecting the tablet as a power supply,
and using its battery status to hibernate or switch off the machine.

https://bugs.freedesktop.org/show_bug.cgi?id=70321Signed-off-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Add the missing clk_disable_unprepare() before return
from nspire_keypad_open() in the error handling case.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

It wasn't really clear from the gamepad-API description how ABS values are
mapped exactly. Clarify that negative is left/up and positive is
right/down. Unfortunately, this means I screwed up the Wii U ProController
ABI. Anyhow, this just means we continue to have 0 compatible gamepad
drivers in the kernel. User-space needs to fix them up, anyway, as all
other gamepads are also incompatible.
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Merge with mainline to bring in changes to input subsystem that were
committed through other trees.

Modify the code to use current_euid(), and in_egroup_p, as in done
in fs/proc/proc_sysctl.c:test_perm()

Cc: stable@vger.kernel.org
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Reported-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull SCSI target fixes from Nicholas Bellinger:
 "Here are the outstanding target fixes queued up for v3.12-rc4 code.

  The highlights include:

   - Make vhost/scsi tag percpu_ida_alloc() use GFP_ATOMIC
   - Allow sess_cmd_map allocation failure fallback to use vzalloc
   - Fix COMPARE_AND_WRITE se_cmd->data_length bug with FILEIO backends
   - Fixes for COMPARE_AND_WRITE callback recursive failure OOPs + non
     zero scsi_status bug
   - Make iscsi-target do acknowledgement tag release from RX context
   - Setup iscsi-target with extra (cmdsn_depth / 2) percpu_ida tags

  Also included is a iscsi-target patch CC'ed for v3.10+ that avoids
  legacy wait_for_task=true release during fast-past StatSN
  acknowledgement, and two other SRP target related patches that address
  long-standing issues that are CC'ed for v3.3+.

  Extra thanks to Thomas Glanzmann for his testing feedback with
  COMPARE_AND_WRITE + EXTENDED_COPY VAAI logic"

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  iscsi-target; Allow an extra tag_num / 2 number of percpu_ida tags
  iscsi-target: Perform release of acknowledged tags from RX context
  iscsi-target: Only perform wait_for_tasks when performing shutdown
  target: Fail on non zero scsi_status in compare_and_write_callback
  target: Fix recursive COMPARE_AND_WRITE callback failure
  target: Reset data_length for COMPARE_AND_WRITE to NoLB * block_size
  ib_srpt: always set response for task management
  target: Fall back to vzalloc upon ->sess_cmd_map kzalloc failure
  vhost/scsi: Use GFP_ATOMIC with percpu_ida_alloc for obtaining tag
  ib_srpt: Destroy cm_id before destroying QP.
  target: Fix xop->dbl assignment in target_xcopy_parse_segdesc_02