Input: ads7846 - pin change interrupt support

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
ed

Input: ads7846 - pin change interrupt support

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: Michael Roth <mroth@nessie.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

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Input: ads7846 - more detailed model name in sysfs

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

Input: ads7846 - support swapping x and y axes

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

Input: ads7846 - fix unsafe disable_irq

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 be

Input: ads7846 - fix unsafe disable_irq

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 3aa551c9b 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: Ben Nizette <bn@niasdigital.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

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Input: ads7846 - introduce platform specific way to synchronize sampling

Noises can be introduced when LCD signals are being driven, some platforms
provide a signal to assist the synchronization of

Input: ads7846 - introduce platform specific way to synchronize sampling

Noises can be introduced when LCD signals are being driven, some platforms
provide a signal to assist the synchronization of this sampling procedure.

Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

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trivial: Fix misspelling of "Celsius".

A few comments say "Celcius"; this fixes them. No code changes.

Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com>
Signed-off-by: Jiri Kosina <jkosina

trivial: Fix misspelling of "Celsius".

A few comments say "Celcius"; this fixes them. No code changes.

Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

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Input: ads7846 - strict_strtoul takes unsigned long

Fix sparse warning introduced by:
commit 160f1fef7e52e974489b3c70fbd4e094c06965c2 Input: convert drivers to use strict_strtoul()

Signed-off-by: H

Input: ads7846 - strict_strtoul takes unsigned long

Fix sparse warning introduced by:
commit 160f1fef7e52e974489b3c70fbd4e094c06965c2 Input: convert drivers to use strict_strtoul()

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

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hrtimer: removing all ur callback modes

Impact: cleanup, move all hrtimer processing into hardirq context

This is an attempt at removing some of the hrtimer complexity by
reducing the number of cal

hrtimer: removing all ur callback modes

Impact: cleanup, move all hrtimer processing into hardirq context

This is an attempt at removing some of the hrtimer complexity by
reducing the number of callback modes to 1.

This means that all hrtimer callback functions will be ran from HARD-irq
context.

I went through all the 30 odd hrtimer callback functions in the kernel
and saw only one that I'm not quite sure of, which is the one in
net/can/bcm.c - hence I'm CC-ing the folks responsible for that code.

Furthermore, the hrtimer core now calls callbacks directly with IRQs
disabled in case you try to enqueue an expired timer. If this timer is a
periodic timer (which should use hrtimer_forward() to advance its time)
then it might be possible to end up in an inf. recursive loop due to the
fact that hrtimer_forward() doesn't round up to the next timer
granularity, and therefore keeps on calling the callback - obviously
this needs a fix.

Aside from that, this seems to compile and actually boot on my dual core
test box - although I'm sure there are some bugs in, me not hitting any
makes me certain :-)

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Input: struct device - replace bus_id with dev_name(), dev_set_name()

Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Dmitry Torokhov <

Input: struct device - replace bus_id with dev_name(), dev_set_name()

Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

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Input: ads7846 - fix cache line sharing issue

We had a report a while back that the ads7846 driver had some issues
when used with DMA-based SPI controllers (like atmel_spi) on systems
where main mem

Input: ads7846 - fix cache line sharing issue

We had a report a while back that the ads7846 driver had some issues
when used with DMA-based SPI controllers (like atmel_spi) on systems
where main memory is not DMA-coherent (most non-x86 boards). Allocate
memory potentially used for DMA separately to avoid cache line issues.

Reported-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

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Input: ads7846 - introduce .gpio_pendown to get pendown state

The GPIO connected to ADS7846 nPENIRQ signal is usually used to get
the pendown state as well. Introduce a .gpio_pendown, and use this
t

Input: ads7846 - introduce .gpio_pendown to get pendown state

The GPIO connected to ADS7846 nPENIRQ signal is usually used to get
the pendown state as well. Introduce a .gpio_pendown, and use this
to decide the pendown state if .get_pendown_state is NULL.

Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

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Input: ads7846 - introduce .gpio_pendown to get pendown state

The GPIO connected to ADS7846 nPENIRQ signal is usually used to get
the pendown state as well. Introduce a .gpio_pendown, and use this
t

Input: ads7846 - introduce .gpio_pendown to get pendown state

The GPIO connected to ADS7846 nPENIRQ signal is usually used to get
the pendown state as well. Introduce a .gpio_pendown, and use this
to decide the pendown state if .get_pendown_state is NULL.

Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

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Input: convert drivers to use strict_strtoul()

strict_strtoul() allows newline character at the end of the the input
string and therefore is more user-friendly.

Signed-off-by: Dmitry Torokhov <dmit

Input: convert drivers to use strict_strtoul()

strict_strtoul() allows newline character at the end of the the input
string and therefore is more user-friendly.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

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Input: ads7846 - optimize order of calculating Rt in ads7846_rx()

Alter the if expression for calculating Rt. The old implementation would
run unnecessary code when the ADS7843 device was used.

The

Input: ads7846 - optimize order of calculating Rt in ads7846_rx()

Alter the if expression for calculating Rt. The old implementation would
run unnecessary code when the ADS7843 device was used.

The patch also fixes the code style to kernel standard.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

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Input: ads7846 - fix sparse endian warnings

Also remove the temporary pointer and use ->rx_buf directly.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Dmitry Torokhov <d

Input: ads7846 - fix sparse endian warnings

Also remove the temporary pointer and use ->rx_buf directly.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

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ARM: OMAP: 5912 OSK GPIO updates

Start cleaning up GPIO handling for OMAP5912 OSK board:

- Initialize GPIOs using the cross-platform calls, not the old
OMAP-private ones.

- Move touchscreen s

ARM: OMAP: 5912 OSK GPIO updates

Start cleaning up GPIO handling for OMAP5912 OSK board:

- Initialize GPIOs using the cross-platform calls, not the old
OMAP-private ones.

- Move touchscreen setup out of ads7846 code into board-specfic
setup code, where it belongs.

This doesn't depend on the patches to update OMAP to use the
gpiolib implementation framework.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

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Input: ads7846 - simplify support of external vREF (and ads7843)

This updates the ads7846 driver to handle external vREF (required
on boards using ads7843 chips) without module parameters, and also

Input: ads7846 - simplify support of external vREF (and ads7843)

This updates the ads7846 driver to handle external vREF (required
on boards using ads7843 chips) without module parameters, and also
removes a needless variable with its associated bogus gcc warning.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

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Input: ads7846 - fix uninitialized var warning

drivers/input/touchscreen/ads7846.c: In function 'ads7846_read12_ser':
drivers/input/touchscreen/ads7846.c:216: warning: 'sample' may be used uninitial

Input: ads7846 - fix uninitialized var warning

drivers/input/touchscreen/ads7846.c: In function 'ads7846_read12_ser':
drivers/input/touchscreen/ads7846.c:216: warning: 'sample' may be used uninitialized in this function

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

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Input: ads7846 - stop updating dev->power.power_state

This stops the ads7846 driver from using dev->power.power_state; that field is
deprecated (overdue for removal) and the only reason to update it

Input: ads7846 - stop updating dev->power.power_state

This stops the ads7846 driver from using dev->power.power_state; that field is
deprecated (overdue for removal) and the only reason to update it was to make
the /sys/devices/.../power/state files (now removed) work better.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

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spi: use simplified spi_sync() calling convention

Given the patch which simplifies the spi_sync calling convention, this one
updates the callers of that routine which tried using it according to the

spi: use simplified spi_sync() calling convention

Given the patch which simplifies the spi_sync calling convention, this one
updates the callers of that routine which tried using it according to the
previous specification. (Most didn't.)

Signed-off-by: Marc Pignat <marc.pignat@hevs.ch>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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get rid of input BIT* duplicate defines

get rid of input BIT* duplicate defines

use newly global defined macros for input layer. Also remove includes of
input.h from non-input sources only for BIT

get rid of input BIT* duplicate defines

get rid of input BIT* duplicate defines

use newly global defined macros for input layer. Also remove includes of
input.h from non-input sources only for BIT macro definiton. Define the
macro temporarily in local manner, all those local definitons will be
removed further in this patchset (to not break bisecting).
BIT macro will be globally defined (1<<x)

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: <dtor@mail.ru>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Cc: <lenb@kernel.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Cc: <perex@suse.cz>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: <vernux@us.ibm.com>
Cc: <malattia@linux.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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hwmon: Convert from class_device to device

Convert from class_device to device for hwmon_device_register/unregister

Signed-off-by: Tony Jones <tonyj@suse.de>
Signed-off-by: Greg Kroah-Hartman <greg

hwmon: Convert from class_device to device

Convert from class_device to device for hwmon_device_register/unregister

Signed-off-by: Tony Jones <tonyj@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>

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Input: ads7846 - re-check pendown status before reporting events

Pendown status from the PENIRQ pin is currently read only at the beginning
of a sample set. If the pen is lifted just after sampling

Input: ads7846 - re-check pendown status before reporting events

Pendown status from the PENIRQ pin is currently read only at the beginning
of a sample set. If the pen is lifted just after sampling has began then
sampled values become wrong.

This patch adds an optional platform penirq_recheck_delay attribute. If
non-zero, samples are only reported to the input subsystem if PENIRQ is
still active that long after the samples taken.

Signed-off-by: Semih Hazar <semih.hazar@indefia.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

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Input: ads7846 - introduce sample settling delay

The ads7846 driver has support for filtering, but when the chip gets
deselected between samples this causes noise. This patch adds support
for an opt

Input: ads7846 - introduce sample settling delay

The ads7846 driver has support for filtering, but when the chip gets
deselected between samples this causes noise. This patch adds support
for an optional settling delay time, so that two consecutive samples
will be taken with the specified delay time apart. This ensures that
the chip won't be deselected, so the noise won't appear.

Filtering can still be done, but will have less work to do since each
time a new sample is taken the same delay applies.

Signed-off-by: Semih Hazar <semih.hazar@indefia.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

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Input: ads7846 - SPI_CPHA mode bugfix

In commit [1] the SPI mode is set to 1, but it should be 0. As stated
in the commit, ads784x samples the data on the rising edge. SPI mode 1
samples on the fa

Input: ads7846 - SPI_CPHA mode bugfix

In commit [1] the SPI mode is set to 1, but it should be 0. As stated
in the commit, ads784x samples the data on the rising edge. SPI mode 1
samples on the falling edge [2] though.

The root cause of this is a bug in the omap_uwire code, which treats
CPHA=1 incorrectly; so these two bugs cancel each other out on one
of the main regression test platforms for this driver.

[1] kernel.org GIT 7937e86a70235e1584486654687dc9908a11e00a
[2] http://en.wikipedia.org/wiki/Serial_Peripheral_Interface_Bus

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

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