Cypress TrueTouch(tm) Standard Product controllers are found in
a wide range of embedded devices. This driver add support for a
variety of TTSP controllers.

Since the hardware is capable of tracking identifiable contacts, multi-touch
protocol type B (stateful) is used to report contact information.

The driver is composed of a core driver that process the data sent by
the contacts and a set of bus specific interface modules. This patch
adds the base core TTSP driver.
Signed-off-by: NJavier Martinez Canillas <javier@dowhile0.org>
Reviewed-by: NHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Acked-by: NMarek Vasut <marek.vasut@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Instead of manually create and handler kernel thread switch to threaded
IRQ and let kernel IRQ core manage thread for us.
Acked-by: NMarek Vasut <marek.vasut@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Let compiler figure out which ones makes most sense to inline.
Acked-by: NMarek Vasut <marek.vasut@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Add __devinit/__devexit sections annotations so parts of code could be
discarded after completing driver initialization.
Acked-by: NMarek Vasut <marek.vasut@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

So that it has proper symlink to the containing module in sysfs.
Acked-by: NMarek Vasut <marek.vasut@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Instead of using legacy PM interfaces switch to using dev_pm_ops.
Acked-by: NMarek Vasut <marek.vasut@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This patch adds a driver for PIXCIR's I2C connected touchscreens.
Signed-off-by: NJianchun <jcbian@pixcir.com.cn>
Acked-by: NHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Some displays from AUO have a so called in-cell touchscreen, meaning it
is built directly into the display unit.

Touchdata is gathered through PIXCIR Tango-ICs and processed in an
Atmel ATmega168P with custom firmware. Communication between the host
system and ATmega is done via I2C.

Devices using this touch solution include the Dell Streak5 and the family
of Qisda ebook readers.

The driver reports single- and multi-touch events including touch area
values.
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Register input device last so that we do not have to reset
input device pointer after calling input_unregister_device().
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

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

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

Having module device table based on PNP id produces the following warning:

  CC      drivers/input/touchscreen/htcpen.o
drivers/input/touchscreen/htcpen.c:50: warning: 'pnp_ids' defined but not used

This happens because it is not a PNP driver, bit rather ISA driver and
pnp_ids table is not used anywhere. To fix this issue let's switch to
DMI-based module table instead,
Reported-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This variant was introduced in

i2c: boilerplate function for byte swapped smbus_write/read_word_data

This also has the side effect of ensuring any errors from the i2c
read and no longer mangled.
Signed-off-by: NJonathan Cameron <jic23@cam.ac.uk>
Acked-by: NMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Commit 940ab889 introduced a new macro to
save some platform_driver boilerplate code. Use it.
Signed-off-by: NJJ Ding <dgdunix@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

In ancient times it was necessary to manually initialize the bus field of an
spi_driver to spi_bus_type. These days this is done in spi_driver_register(),
so we can drop the manual assignment.

The patch was generated using the following coccinelle semantic patch:
// <smpl>
@@
identifier _driver;
@@
struct spi_driver _driver = {
	.driver = {
-		.bus = &spi_bus_type,
	},
};
// </smpl>
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

MODULE_DEVICE_TABLE will setup the module alias for us, thus adding
MODULE_ALIAS for an entry already in MODULE_DEVICE_TABLE is redundant.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

The PM methods are basically the same for SPI and I2C busses, so let's
use the same dev_pm_ops for both of them.
Acked-by: NMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This patch adds the EETI eGalax serial multi touch controller driver.

EETI eGalax serial touch screen controller is a I2C based multiple
capacitive touch screen controller, it can support 5 touch events maximum.
Signed-off-by: NZhang Jiejing <jiejing.zhang@freescale.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

With commit 67d0a075 we mark strict_strtox
as obsolete. Convert all remaining such uses in drivers/input/.

Also change long to appropriate types, and return error conditions
from kstrtox separately, as Dmitry sugguests.
Signed-off-by: NJJ Ding <dgdunix@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Signed-off-by: NMichael Gebetsroither <michael@mgeb.org>
Reviewed-by: NWanlong Gao <gaowanlong@cn.fujitsu.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

A pending cleanup will mean that module.h won't be implicitly
everywhere anymore.  Make sure the modular drivers in input dir
are actually calling out for <module.h> explicitly in advance.
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>

This is the first step to also support the touch interface of the mc13892
pmic chip.
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Abort driver initialization if X plate resistance was not specified in
platform data as it will cause pressure to be always calculated as 0,
and making userspace ignore touch coordinates.
Signed-off-by: NPhilip Rakity <prakity@marvell.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

CONFIG_PM is defined when CONFIG_PM_SLEEP or CONFIG_PM_RUNTIME is defined,
however suspend and resume methods are only valid in the context of
CONFIG_PM_SLEEP. If only CONFIG_PM_RUNTIME is defined we get the following
warning (courtesy of Geerts randconfig builds):

	ad7879-i2c.c: warning: 'ad7879_i2c_resume' defined but not used
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Sysfs attribute show methods are always passed a buffer of length
PAGE_SIZE.  To keep from overwriting this buffer and causing havoc, use
snprintf() to guarantee we never write more than the buffer can hold.

In addition, at least for my touchscreen, the number and size of objects
was far too big to fit in a single 4K page.  Therefore, this patch also
trims some redundant framing text to leave more room for actual data.
Signed-off-by: NDaniel Kurtz <djkurtz@chromium.org>
Acked-by: NNick Dyer <nick.dyer@itdev.co.uk>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This patch adds the TSC-40 serial touchscreen driver and should be
compatible with TSC-10 and TSC-25.

The driver was written by Linutronix on behalf of Bachmann electronic GmbH.
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NChristian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Since touchscreen driver does not handle any events to be sent to the
device we can close serio port first and then unregister the input device.
Tested-by: NJohn Sung <penmount.touch@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Instead of having one large switch based on product ID use pointer to
function actually doing protocol decoding.
Tested-by: NJohn Sung <penmount.touch@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Add multi touch support for PenMount 6250 touch controller.
Signed-off-by: NJohn Sung <penmount.touch@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Add dual touch support for PenMount 3000 touch controller.
Signed-off-by: NJohn Sung <penmount.touch@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Add support for PenMount 6000 touch controller.
Signed-off-by: NJohn Sung <penmount.touch@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

The MSB and LSB of the XY axis value are switched according to the PenMount 9000 protocol. The driver name is also changed from penmountlpc, since it is not for LPC interface at all.
Signed-off-by: NJohn Sung <penmount.touch@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Adds INPUT_PROP_POINTER or INPUT_PROP_DIRECT as necessary to the
hardware supported by the Wacom driver. The DIRECT property is
assigned to devices with an embedded screen (i.e. touchscreens
and display tablets). The POINTER property is assigned to those
without embedded screens.
Signed-off-by: NJason Gerecke <killertofu@gmail.com>
Reviewed-by: NPing Cheng <pingc@wacom.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This flag is a NOOP and can be removed now.
Signed-off-by: NYong Zhang <yong.zhang0@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This will ensure that the device delivers input events only when there
are users.
Tested-by: NThierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Instead of using hard IRQ and workqueue solution switch to using threaded
interrupt handler to simplify the code and locking rules.
Tested-by: NThierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Since touchscreen driver does not handle any events to be sent to the
device we can close serio port first and then unregister the input device.
Tested-by: NPing Cheng <pingc@wacom.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Implement open() and close() methods for the input device so that we
do not start the device unless there are users listening to the events.
Acked-by: NChris Bagwell <chris@cnpbagwell.com>
Tested-by: NPing Cheng <pingc@wacom.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

tnetv107x-ts.c uses interfaces from linux/module.h,
so it should include that file.  This patch fixes build errors.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>