When driver uses custom pendown detection method gpio_pendown is not
set up and so we should not try to free it, otherwise we are presented
with:

------------[ cut here ]------------
WARNING: at drivers/gpio/gpiolib.c:1258 gpio_free+0x100/0x12c()
Modules linked in:
[<c0061208>] (unwind_backtrace+0x0/0xe4) from [<c0091f58>](warn_slowpath_common+0x4c/0x64)
[<c0091f58>] (warn_slowpath_common+0x4c/0x64) from [<c0091f88>](warn_slowpath_null+0x18/0x1c)
[<c0091f88>] (warn_slowpath_null+0x18/0x1c) from [<c024e610>](gpio_free+0x100/0x12c)
[<c024e610>] (gpio_free+0x100/0x12c) from [<c03e9fbc>](ads7846_probe+0xa38/0xc5c)
[<c03e9fbc>] (ads7846_probe+0xa38/0xc5c) from [<c02cff14>](spi_drv_probe+0x18/0x1c)
[<c02cff14>] (spi_drv_probe+0x18/0x1c) from [<c028bca4>](driver_probe_device+0xc8/0x184)
[<c028bca4>] (driver_probe_device+0xc8/0x184) from [<c028bdc8>](__driver_attach+0x68/0x8c)
[<c028bdc8>] (__driver_attach+0x68/0x8c) from [<c028b4c8>](bus_for_each_dev+0x48/0x74)
[<c028b4c8>] (bus_for_each_dev+0x48/0x74) from [<c028ae08>](bus_add_driver+0xa0/0x220)
[<c028ae08>] (bus_add_driver+0xa0/0x220) from [<c028c0c0>](driver_register+0xa8/0x134)
[<c028c0c0>] (driver_register+0xa8/0x134) from [<c0050550>](do_one_initcall+0xcc/0x1a4)
[<c0050550>] (do_one_initcall+0xcc/0x1a4) from [<c00084e4>](kernel_init+0x14c/0x214)
[<c00084e4>] (kernel_init+0x14c/0x214) from [<c005b494>](kernel_thread_exit+0x0/0x8)
---[ end trace 4053287f8a5ec18f ]---

Also rearrange ads7846_setup_pendown() to have only one exit point
returning success.
Reported-by: NSourav Poddar <sourav.poddar@ti.com>
Acked-by: NWolfram Sang <w.sang@pengutronix.de>
Reviewed-by: NCharulatha V <charu@ti.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This reverts commit 5fdbe44d.

Apparently there exist userspace programs that expect to be able to
"loop back" and distribute to readers events written into
/dev/input/eventX and this change made for the benefit of SysRq
handler broke them. Now that SysRq uses alternative method to suppress
filtering of the events it re-injects we can safely revert this change.
Reported-by: NKristen Carlson Accardi <kristen@linux.intel.com>
Cc: stable@kernel.org
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Internally 'disable' the filter when re-injecting Alt-SysRq instead
of relying on input core to suppress delivery of injected events
to the originating handler.

This allows to revert commit 5fdbe44d
which causes problems with existing userspace programs trying to
loopback the events via evdev.
Reported-by: NKristen Carlson Accardi <kristen@linux.intel.com>
Cc: stable@kernel.org
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

When rebinding a serio driver via sysfs drvctl interface it is
possible for an interrupt to trigger after the disconnect of the
existing driver and before the binding of the new driver.  This will
cause the serio interrupt handler to queue a rescan event which will
disconnect the new driver immediately after it is attached.

This change removes pending rescans from the serio event queue after
processing the drvctl request but before releasing the serio mutex.

Reproduction involves issuing a rebind of device port from psmouse
driver to serio_raw driver while generating input to trigger
interrupts.  Then checking to see if the corresponding
i8042/serio4/driver is correctly attached to the serio_raw driver
instead of psmouse.
Signed-off-by: NDuncan Laurie <dlaurie@chromium.org>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

IORESOURCE_IRQ_* is wrong for irq_request, use the correct IRQF_* instead.
Signed-off-by: NAlexander Stein <alexander.stein@informatik.tu-chemnitz.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Serial devices send both pen and touch data through the same logical
port. Since we scaled touch to pen maximum, we use pen resolution
for touch as well here.

This is under the assumption that pen and touch share the same physical
surface. In the case when a small physical dimensional difference occurs
between pen and touch, we assume the tolerance for touch point precision
is higher than pen and the difference is within touch point tolerance.

A per-MT tool based resolution mechanism should be introduced if the
above assumption does not hold true for the pen and touch devices any
more.
Signed-off-by: NPing Cheng <pingc@wacom.com>
Reviewed-by: NHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

On some machines, like Dell Studio XPS 16 (1640), touchpad fails to
respond to the standard query after first reset but may start
responding later, so let's repeat reset sequence several (3) times.
Signed-off-by: NAlexandre Peixoto Ferreira <alexandref75@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

synaptics_set_advanced_gesture_mode() affect capabilities bits we should
perform comparison after calling this function, otherwise they will never
match and we will be forced to perform full reconnect.
Signed-off-by: NAlexandre Peixoto Ferreira <alexandref75@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Correct key mapping for Left Meta key.
Signed-off-by: NRakesh Iyer <riyer@nvidia.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Fix build error introduced by variable name change.
Signed-off-by: NRakesh Iyer <riyer@nvidia.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Also remove fake ABS_RX/ABS_RY "axes" that were used to report physical
dimensions now that we have better way.
Signed-off-by: NPing Cheng <pingc@wacom.com>
Reviewed-by: NHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Reported-by: NDavid Foley <favux.is@gmail.com>
Signed-off-by: NPing Cheng <pingc@wacom.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Currently sysrq_enabled and __sysrq_enabled are initialised separately
and inconsistently, leading to sysrq being actually enabled by reported
as not enabled in sysfs.  The first change to the sysfs configurable
synchronises these two:

    static int __read_mostly sysrq_enabled = 1;
    static int __sysrq_enabled;

Add a common define to carry the default for these preventing them becoming
out of sync again.  Default this to 1 to mirror previous behaviour.
Signed-off-by: NAndy Whitcroft <apw@canonical.com>
Cc: stable@kernel.org
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

We were forgetting to set up device capabilities for KEY_VSW entries.
Reported-by: NTapio Vihuri <tapio.vihuri@nokia.com>
Tested-by: NTapio Vihuri <tapio.vihuri@nokia.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This patch adds support for the internal matrix keyboard controller for
Nvidia Tegra platforms.
Signed-off-by: NRakesh Iyer <riyer@nvidia.com>
Reviewed-by: NTrilok Soni <tsoni@codeaurora.org>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

The driver does not require hardirq context and can work with threaded
interrupts as well, so let's switch to request_any_context_irq which
will select the context that is available for us.
Signed-off-by: NPhilippe Langlais <philippe.langlais@stericsson.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Parse and pass the status byte information to the registered serio
drivers as well as the data bytes.

Signed-off-by: David Engraf<david.engraf@sysgo.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

If request_irq() fails we should return the proper error instead of -1.
Signed-off-by: NDavidlohr Bueso <dave@gnu.org>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Add regulator support in ROHM BU21013 touch panel driver.
Signed-off-by: NNaveen Kumar Gaddipati <naveen.gaddipati@stericsson.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Remove duplicate display resolution parameters from platform data as
one pair is quite enough.
Signed-off-by: NNaveen Kumar Gaddipati <naveen.gaddipati@stericsson.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

We should use IS_ERR() when checking whether clk_get() succeeded or
not since it returns errors by encoding error codes with ERR_PTR().
Signed-off-by: NJamie Iles <jamie@jamieiles.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

We should use IS_ERR() when checking whether clk_get() succeeded or
not since it returns errors by encoding error codes with ERR_PTR().
Signed-off-by: NJamie Iles <jamie@jamieiles.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This switch is used to signal that user want to disable screen
transitions from portrait to landscape mode and back.
Signed-off-by: NJekyll Lai <jekyll_lai@wistron.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

'features' is a bit array, not byte array
Signed-off-by: NAlexander Stein <alexander.stein@informatik.tu-chemnitz.de>
Acked-by: NAnssi Hannula <anssi.hannula@iki.fi>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Emulate single-touch compatible events for the 2-finger panels
so that they can be used with single-touch legacy clients.

Assign device ids as Wacom USB vendor ID and product ID.
Name the device to reflect its specific features.

Scale touch coordinates to pen maximum if pen supported.
Signed-off-by: NPing Cheng <pingc@wacom.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This is driver for EasyPoint AS5011 2 axis joystick chip. This chip is
plugged on an I2C bus.

Tested on ARM processor (i.MX27).
Signed-off-by: NFabien Marteau <fabien.marteau@armadeus.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

The only platform using this driver (mach-aaec2000) is no longer in
the kernel so remove the driver.
Signed-off-by: NJamie Iles <jamie@jamieiles.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

i8042 controller present in Dell Vostro V13 errorneously signals spurious
timeouts.

Introduce i8042.notimeout parameter for ignoring i8042-signalled timeouts
and apply this quirk automatically for Dell Vostro V13, based on DMI match.

In addition to that, this machine also needs to be added to nomux blacklist.
Signed-off-by: NJiri Kosina <jkosina@suse.cz>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

There is a general move towards the use of dev_pm_ops rather than
bus specific suspend APIs as this simplifies both the bus and PM core
implementations. Convert the cy8ctmg110_ts driver over.

Compile tested only.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

There is a general move towards the use of dev_pm_ops rather than
bus specific suspend APIs as this simplifies both the bus and PM core
implementations. Convert the migor_ts driver over.

Compile tested only.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

There is a general move towards the use of dev_pm_ops rather than
bus specific suspend APIs as this simplifies both the bus and PM core
implementations. Convert the mcs5000_ts driver over.

Compile tested only.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

There is a general move towards the use of dev_pm_ops rather than
bus specific suspend APIs as this simplifies both the bus and PM core
implementations. Convert the eeti_ts driver over.

Compile tested only by me, but Sven Neumann reports that the new code
works.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Tested-by: NSven Neumann <s.neumann@raumfeld.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

There is a general move towards the use of dev_pm_ops rather than
bus specific suspend APIs as this simplifies both the bus and PM core
implementations. Convert the ad7879-ts I2C support over.

Compile tested only.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Conflicts:
	include/linux/input.h

Not all penabled devices support touch. The same holds true for touch
devices, so we should be setting up devices according to the results
returned when we query the hardware.
Signed-off-by: NPing Cheng <pingc@wacom.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This makes code safer and easier to read.
Signed-off-by: NPing Cheng <pingc@wacom.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Signed-off-by: NDavid Sterba <dsterba@suse.cz>
Acked-by: NLinus Walleij <linus.walleij@stericsson.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This patch adds notebook Acer Aspire 5100 to the list of Dritek HW. Acer
Aspire 5100 needs Dritek keyboard extension to support all Fn keys.
Signed-off-by: NPali Rohár <pali.rohar@gmail.com>
Tested-by: NPali Rohár <pali.rohar@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>