PS2Mult is a simple serial protocol used for multiplexing several PS/2
streams into one serial data stream. It's used e.g. on TQM85xx series
of boards.
Signed-off-by: NDmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

We need to always call usb_autopm_put_interface() in wacom_open(),
not only when initialization fails, otherwise the device will be
marked as PM-busy and will never be put in suspended state.

Based on patch by Oliver Neukum.
Acked-by: NOliver Neukum <oneukum@suse.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Suppress events where pressure > pressure_max.
These events come typically along with inaccurate X and Y samples.
Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Some input users such as Android or X require BTN_TOUCH events.
Implement EV_KEY:BTN_TOUCH and make sure that the release event
is not erroneous scheduled without a preceding valid touch.
Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

According to the AD7877 datasheet:

Each transfer operation is 16-bit. If multiple read/write operations are
to be performed, CS must be taken high after the end of each read/write
operation before another read/write operation can be performed by
taking CS low again.

Make sure CS toggles after each transfer in the message.
Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Make hp680_ts_init/exit() call cancel_delayed_work_sync() instead of
calling cancel_delayed_work() followed by flush_scheduled_work().

This is to prepare for the deprecation and removal of
flush_scheduled_work().
Signed-off-by: NTejun Heo <tj@kernel.org>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

When annotating mutex to avoid false lockdep reports we should not
be using MOUSEDEV_MIX as lock subclass but rather SINGLE_DEPTH_NESTING.
Signed-off-by: NHitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Commit 91143379 introduces regulator operations in ads7846 touchscreen
driver. Among these operations, some are called while holding a
spinlock. On many platforms regulators reside on slow buses, such as
I2C/SPI and require sleep while accessing them.

The touchscreen itself is also a SPI device and currently relies on
asynchronous SPI access to avoid sleeping in interrupt context. Let's
switch to using threaded IRQ to be able to access SPI bus
synchronously (which simplifies driver a bit); it also allows safe
access to the regulators as well.

This has been tested on the ti_omap3530evm board:
 1) using ts_lib after normal boot
 2) using ts_lib after "#echo 1/0 > /sys/bus/spi/devices/spi0.1/disable"
 3) using ts_lib after "#echo mem > /sys/power/state" and "wake up"

Also tested on pandora.

Based on original patch by Dmitry Torokhov.
Tested-by: NGrazvydas Ignotas <notasas@gmail.com>
Signed-off-by: NJason Wang <jason77.wang@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Some (rare) serio devices need to have multiple serio children. One of
the examples is PS/2 multiplexer present on several TQC STKxxx boards,
which connect PS/2 keyboard and mouse to single tty port.
Signed-off-by: NDmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

There was too much knowledge about internals if serio in the pass-through
handling, clean it up.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Add the ROHM BU21013 capacitive touch panel controller support with
i2c interface.
Acked-by: NLinus Walleij <linus.walleij@stericsson.com>
Signed-off-by: NNaveen Kumar Gaddipati <naveen.gaddipati@stericsson.com>
Acked-by: NHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Program keyboard controller to generate a wake-up request on events and
on long key presses. It will not generate wake-up requests on timeouts
since driver code does not handle them.

This allows keyboard to wake-up OMAP from suspend.
Signed-off-by: NMike Turquette <mturquette@ti.com>
Signed-off-by: NAbraham Arce <x0066660@ti.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Select correct interrupt line behaviour.
Signed-off-by: NAbraham Arce <x0066660@ti.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Remove SYSCONFIG register configuration, omap hwmod framework will
use internal API to modify as required.

Other minor updates:

- Change a variable name from DEF to VAL, this represents a value
- Break line width to 80 characters
Signed-off-by: NAbraham Arce <x0066660@ti.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Get mem and irq resources using platform helpers

 - platform_get_base
 - platform_get_irq
Signed-off-by: NAbraham Arce <x0066660@ti.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Signed-off-by: NSundar Iyer <sundar.iyer@stericsson.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Add support for the keypad controller in the Scroll Key Encoder (SKE)
module on the Nomadik family and the DB8500 SoC.
Acked-by: NLinus Walleij <linus.walleij@stericsson.com>
Signed-off-by: NSundar Iyer <sundar.iyer@stericsson.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

We should not try to call free_irq() when request_irq() failed.
Reported-by: NG, Manjunath Kondaiah <manjugk@ti.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Instead of using -1 let's start using proper error codes.
Signed-off-by: NDavidlohr Bueso <dave@gnu.org>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Rework emu_probe() to make sure we leave the device disabled if probe
fails for any reason.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Signed-off-by: NDzianis Kahanovich <mahatma@eu.by>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Currently the pressure range in Cintiq 21UX2 is limited to half of the
supported. This patch fixes the problem.
Signed-off-by: NAristeu Rozanski <aris@redhat.com>
Acked-by: NPing Cheng <pingc@wacom.com>
CC: stable@kernel.org
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

When runtime PM is enabled by default for input devices, X hangs in
wacom open:
[<ffffffff814a00ea>] mutex_lock+0x1a/0x40
[<ffffffffa02bc94b>] wacom_resume+0x3b/0x90 [wacom]
[<ffffffff81327a32>] usb_resume_interface+0xd2/0x190
[<ffffffff81327b5d>] usb_resume_both+0x6d/0x110
[<ffffffff81327c24>] usb_runtime_resume+0x24/0x40
[<ffffffff8130a2cf>] __pm_runtime_resume+0x26f/0x450
[<ffffffff8130a23a>] __pm_runtime_resume+0x1da/0x450
[<ffffffff8130a53a>] pm_runtime_resume+0x2a/0x50
[<ffffffff81328176>] usb_autopm_get_interface+0x26/0x60
[<ffffffffa02bc626>] wacom_open+0x36/0x90 [wacom]

wacom_open() takes wacom->lock and calls usb_autopm_get_interface(),
which in turn calls wacom_resume() which tries to acquire the lock
again.

The fix is to call usb_autopm_get_interface() first, before we take
the lock.

Since we do not do usb_autopm_put_interface() until wacom_close()
is called runtime PM is effectively disabled for the driver, however
changing it now would risk regressions so the complete fix will
have to wait till the next merge window.
Reported-by: NJiri Slaby <jslaby@suse.cz>
Acked-by: NOliver Neukum <oneukum@suse.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Similarly to the keyboard handler, we are called by different input
devices and thus need to add spinlock if we want to maintain our
state properly.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Keep the file consistent and make clear that we mean 144 instead of -112.
Signed-off-by: NChristoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

pci_disable_device() is called for following 2 cases
- error path in emu_probe()
- in emu_remove()
Signed-off-by: NRahul Ruikar <rahul.ruikar@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This adds support for hanwang Art Master HD 5012 electromagnetic tablet.
Signed-off-by: NXing Wei <weixing@hanwang.com.cn>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Fixed JSIOCSAXMAP ioctl to update absmap, the map from hardware axis to
event axis in addition to abspam.  This fixes a regression introduced
by 999b874f.
Signed-off-by: NKenneth Waters <kwwaters@gmail.com>
Cc: stable@kernel.org
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

The input devices created by uinput do not currently handle multitouch
properly. All events will appear as if they came from slot zero, and
the input event buffers are not adjusted. This patch creates the MT
slots during setup, and sets the number of events per packet based
on the MT usage.
Signed-off-by: NHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Currently HID layer only allows to remap keycodes for known usages,
and responds with -EINVAL when user tries to map new usage code.
This precludes us form relying on udev/keymap for establishing correct
mappings and forces us to write dummy HID drivers responsible only for
setting up keymaps.

Let's allow remapping not only usages that have been set up as keys
(usage->type == EV_KEY) but also yet-unmapped usages (usage->type == 0).
Acked-by: NJarod Wilson <jarod@redhat.com>
Acked-by: NJiri Kosina <jkosina@suse.cz>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Switch the code to use new style of getkeycode and setkeycode
methods to allow retrieving and setting keycodes not only by
their scancodes but also by index.
Acked-by: NVille Syrjälä <syrjala@sci.fi>
Tested-by: NJarod Wilson <jarod@wilsonet.com>
Tested-by: NVille Syrjälä <syrjala@sci.fi>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Nobody uses it anymore.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Memory pointed to by the pointer should not change.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Nobody uses it anymore.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Memory pointed to by these fields is not supposed to change.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Commit ea486e68 changed kseriod thread
to become not freezable so we do not need this include anymore.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Add necessary events so that Hanwang Art Master III tablet can be handled
by the stock xf86-input-wacom driver.
Signed-off-by: NXing Wei <weixing@hanwang.com.cn>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Signed-off-by: NChris Bagwell <chris@cnpbagwell.com>
Acked-by: NPing Cheng <pingc@wacom.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>