That is "success", "unknown", "through", "performance", "[re|un]mapping"
, "access", "default", "reasonable", "[con]currently", "temperature"
, "channel", "[un]used", "application", "example","hierarchy", "therefore"
, "[over|under]flow", "contiguous", "threshold", "enough" and others.
Signed-off-by: NAndré Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

If the sub-probe functions fail, we need to pass up the error code to the
higher levels from the probe function.  We currently always return 0 even
if there was an error so higher levels don't report problems.
Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This makes it consistent with other buses (platform, i2c, vio, ...).  I'm
not sure why we use the prefixes, but there must be a reason.

This was easy enough to do it, and I did it.
Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: Samuel Ortiz <sameo@openedhand.com>
Cc: "John W. Linville" <linville@tuxdriver.com>
Acked-by: NMike Frysinger <vapier.adi@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The MELPAS MCS-5000 is the touchscreen controller. The overview of this
controller can see at the following website:

http://www.melfas.com/product/product01.asp?k_r=eng_

This driver is tested on s3c6410 NCP board and supports only the i2c
interface.
Signed-off-by: NJoonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

The AD7889 is a new part but 100% software compatible with the AD7879, so
add it to the id_table and help text.
Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Touchscreen driver for the PCAP2 multi function device used in
Motorola EZX smartphones.
Signed-off-by: NDaniel Ribeiro <drwyrm@gmail.com>
Signed-off-by: NStefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: NAntonio Ospite <ospite@studenti.unina.it>
Acked-by: NDmitry Torokhov <dtor@mail.ru>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

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

There is no need for locking when we send query and start commands
to the touchscreen since there is no concurrency.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Add the cpu.c and dev.c and modify w90p910 platform
to apply to use the common API(provided by cpu.c and dev.c)
at the same time, I renamed all w90x900 to nuc900 in every
c file of w90x900 platform and touchscreen's driver name.
Signed-off-by: NWan ZongShun <mcuos.com@gmail.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Sometimes, when using the touchscreen, it stops working till next restart
and the following message is printed:

	ucb1400: unexpected IE_STATUS = 0x0

The following patch retriggers the touchscreen interrupt unconditionally.
This prevents hanging of the touchscreen in case of bogus interrupt
occurence.
Signed-off-by: NPavel Revak <palo@bielyvlk.sk>
Acked-by: NMarek Vasut <marek.vasut@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This patch enables ADC filtering on UCB1400 codec by default. The
benefit from this change is mostly on some Colibri boards where
the ADCSYNC pin of the UCB1400 codec isn't connected causing the
touchscreen to jitter very badly. This change has no visible
effect on boards where the ADCSYNC pin is connected.
Signed-off-by: NMarek Vasut <marek.vasut@gmail.com>
Tested-by: NPalo Revak <palo@bielyvlk.sk>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This adds a struct eeti_ts_platform_data which currently holds only one
value to specify the interrupt polarity.

The driver has a fallback if no platform data is passed in via the
i2c_board_info, so no regression is caused.
Signed-off-by: NDaniel Mack <daniel@caiaq.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

We have a nice wrapper for that.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Check the result when sending the power down command to the controller.
Signed-off-by: NRichard Röjfors <richard.rojfors.ext@mocean-labs.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

In cases when get_pendown_state callback is not available have
the driver to fallback on pressure calculation to determine if
the pen is up.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This patch adds support for the e2i touchscreen controller used in the
Mimo 740 (and probably in other e2i touchscreen products). Tested on
Mimo 740.
Signed-off-by: NFlorian Echtler <floe@butterbrot.org>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Don't read coordinates during probe of the driver, just power down
the controller and wait for interrupts.

Signed-off-by: Richard Röjfors<richard.rojfors.ext@mocean-labs.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Make init_platform_hw and exit_platform_hw callbacks optional since
they are not needed on all platforms.
Signed-off-by: NRichard Röjfors <richard.rojfors.ext@mocean-labs.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Properly shut off interrupts/delayed work by free-ing IRQ first
and then ensuring that enable/disable is balanced. Also add
__devinit/__devexit markings, restore poll delay/period scheduling
logic, make sure we call exit_platform_hw() method when probe
fails.
Tested-by: NRichard Röjfors <richard.rojfors.ext@mocean-labs.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Since it's not allowed to do synchronous I2C in the HR timer callback
context we have to switch to using the global workqueue. The work is
scheduled every 1ms when polling rather than 5 us.
Signed-off-by: NRichard Röjfors <richard.rojfors.ext@mocean-labs.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This patch allows tweaking the behaviour of GPIO_STATUS register
shift quirk that's in wm97xx-core. The problem with GPIO_STATUS
register being shifted by one doesn't appear on all hardware it
seems and causes problems with accelerated touchscreen drivers on
Palm hardware. Therefore an accelerated touchscreen driver can select
if the shift is/isn't happening on the hardware.
Signed-off-by: NMarek Vasut <marek.vasut@gmail.com>
Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This patch refactors the Mainstone accelerated touch code a little and
adds support for interrupt driven touchscreen on Palm LifeDrive, TX and
Tungsten T5.
Signed-off-by: NMarek Vasut <marek.vasut@gmail.com>
Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Now that clk API is available on ARM we can use it in the driver.
Signed-off-by: NWan ZongShun <mcuos.com@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

The driver for UCB1400 touchscreen controllers contains a function named
ucb1400_ts_pen_down(), but it returns 0 if the pen is down and 1 if it's up.
This causes confusion, especially since it's used as a boolean truth value
later in the code. This patch renames it.
Signed-off-by: NHans J. Koch <hjk@linutronix.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Add support for the JASTEC/DigiTech DTR-02U USB touch screen
controllers.
Signed-off-by: NJim Persson <jim-linux@nurd.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Use the function resource_size, which reduces the chance of
introducing off-by-one errors in calculating the resource size.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
struct resource *res;
@@

- (res->end - res->start) + 1
+ resource_size(res)
// </smpl>
Signed-off-by: NJulia Lawall <julia@diku.dk>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

In the near future, the driver core is going to not allow direct access
to the driver_data pointer in struct device.  Instead, the functions
dev_get_drvdata() and dev_set_drvdata() should be used.  These functions
have been around since the beginning, so are backwards compatible with
all older kernel versions.

Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: linux-input@vger.kernel.org
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Some SoCs support only pin change interrupts on GPIO pins used as irq
lines.

The ads7846 core is not affected from the additional irqs on the rising
edge because the code accounts touch bounce anyway by kicking in a timer
and disabling the irq after the first request and reenabling the irq after
a timeout when there is no longer pen down detected.
Signed-off-by: NMichael Roth <mroth@nessie.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

The touchscreen works in two modes, wait trigger mode and auto-semi
mode. The device starts in wait trigger mode and waits until pressure
is detected, then device sets WT_INT bit and raises an interrupt.
The driver should put the device into auto-semi mode and prepare for
reading first X and then Y coordinates. When coordinate data is ready
the driver sets ADC_INT bit and raises interrupt again.

[dtor@mail.ru: various cleanups]
Signed-off-by: NWan ZongShun <mcuos.com@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

platform_data != driver_data

driver data is actually the "correct" place of the struct however it is
not placed there due to the need of the ac97 struct. This is broken since
d9105c2b aka "[ARM] 5184/1: Split ucb1400_ts into core and touchscreen"
Signed-off-by: NManuel Traut <manut@linutronix.de>
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This patch adds a driver for EETI's I2C connected touchscreens.
Signed-off-by: NDaniel Mack <daniel@caiaq.de>
Tested-by: NSven Neumann <s.neumann@raumfeld.com>
Acked-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Signed-off-by: NMichael Roth <mroth@nessie.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Signed-off-by: NMichael Roth <mroth@nessie.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

The platform codes must provide get_pendown_state() for the driver
to work properly.
Signed-off-by: NKwangwoo Lee <kwangwoo.lee@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Now that hrtimers are always running in hard irq context we can't
unconditionally enable interrupts at the end of the timer function.
Signed-off-by: NThierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: NKwangwoo Lee <kwangwoo.lee@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

In the near future, the driver core is going to not allow direct access
to the driver_data pointer in struct device.  Instead, the functions
dev_get_drvdata() and dev_set_drvdata() should be used.  These functions
have been around since the beginning, so are backwards compatible with
all older kernel versions.
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This patch adds an accelerated driver for Atmel AVR32 AT32AP700X
microprocessors. It uses interrupts on the channel B in the AC97
controller. Thus, offloading the work queue in the wm97xx-ts driver.

The driver has been tested with Atmel AVR32 AT32AP7000 and Wolfson
WM9712 codec.

The driver can also be easily modified to support Atmel AT91 devices, as
AT91 and AVR32 share the same AC97C module.

[Fixed leak of atmel_wm97xx when probe fails. -- broonie]
[dtor@mail.ru: do not report ABS_PRESSURE events when not measuring pressure]
Signed-off-by: NHans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

disable_irq() waits for all running handlers to complete before
returning.  As such, if it's used to disable an interrupt from
that interrupt's handler it will deadlock.  This replaces the
dangerous instances with the _nosync() variant which doesn't have
this problem.
Signed-off-by: NBen Nizette <bn@niasdigital.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

disable_irq() waits for all running handlers to complete before
returning.  As such, if it's used to disable an interrupt from
that interrupt's handler it will deadlock.  This replaces the
dangerous instances with the _nosync() variant which doesn't have
this problem.
Signed-off-by: NBen Nizette <bn@niasdigital.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

The use of disable_irq inside the handler for the interrupt being
disabled has always been dangerous.  disable_irq should wait for that
handler to complete before returning -> deadlock.

For some reason this wasn't actually the case until 3aa551c9 was merged
but since this time, the ads7846 driver has deadlocked the system on
first interrupt.

Convert the driver to use the handler-safe _nosync variant.
Signed-off-by: NBen Nizette <bn@niasdigital.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>