Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Link: http://lkml.kernel.org/r/20110601180610.054254048@duck.linux-mips.netSigned-off-by: NThomas Gleixner <tglx@linutronix.de>

 arch/arm/mach-footbridge/isa-timer.c |    2 +-
 arch/mips/cobalt/time.c              |    2 +-
 arch/mips/jazz/irq.c                 |    2 +-
 arch/mips/kernel/i8253.c             |    2 +-
 arch/mips/mti-malta/malta-time.c     |    2 +-
 arch/mips/sgi-ip22/ip22-time.c       |    2 +-
 arch/mips/sni/time.c                 |    2 +-
 arch/x86/kernel/apic/apic.c          |    2 +-
 arch/x86/kernel/apm_32.c             |    2 +-
 arch/x86/kernel/hpet.c               |    2 +-
 arch/x86/kernel/i8253.c              |    2 +-
 arch/x86/kernel/time.c               |    2 +-
 drivers/block/hd.c                   |    2 +-
 drivers/clocksource/i8253.c          |    2 +-
 drivers/input/gameport/gameport.c    |    2 +-
 drivers/input/joystick/analog.c      |    2 +-
 drivers/input/misc/pcspkr.c          |    2 +-
 include/linux/i8253.h                |   11 +++++++++++
 sound/drivers/pcsp/pcsp.h            |    2 +-
 19 files changed, 29 insertions(+), 18 deletions(-)

This reverts commit b1c43f82.

It was broken in so many ways, and results in random odd pty issues.

It re-introduced the buggy schedule_work() in flush_to_ldisc() that can
cause endless work-loops (see commit a5660b41: "tty: fix endless
work loop when the buffer fills up").

It also used an "unsigned int" return value fo the ->receive_buf()
function, but then made multiple functions return a negative error code,
and didn't actually check for the error in the caller.

And it didn't actually work at all.  BenH bisected down odd tty behavior
to it:
  "It looks like the patch is causing some major malfunctions of the X
   server for me, possibly related to PTYs.  For example, cat'ing a
   large file in a gnome terminal hangs the kernel for -minutes- in a
   loop of what looks like flush_to_ldisc/workqueue code, (some ftrace
   data in the quoted bits further down).

   ...

   Some more data: It -looks- like what happens is that the
   flush_to_ldisc work queue entry constantly re-queues itself (because
   the PTY is full ?) and the workqueue thread will basically loop
   forver calling it without ever scheduling, thus starving the consumer
   process that could have emptied the PTY."

which is pretty much exactly the problem we fixed in a5660b41.

Milton Miller pointed out the 'unsigned int' issue.
Reported-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Reported-by: NMilton Miller <miltonm@bga.com>
Cc: Stefan Bigler <stefan.bigler@keymile.com>
Cc: Toby Gray <toby.gray@realvnc.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Add support for PMIC8XXX power key driven over dedicated
KYPD_PWR_N pin.
Acked-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: NTrilok Soni <tsoni@codeaurora.org>
Signed-off-by: NAnirudh Ghayal <aghayal@codeaurora.org>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Add Qualcomm PMIC8XXX based keypad controller driver
supporting upto 18x8 matrix configuration.
Acked-by: NDmitry Torokhov <dtor@mail.ru>
Signed-off-by: NTrilok Soni <tsoni@codeaurora.org>
Signed-off-by: NAnirudh Ghayal <aghayal@codeaurora.org>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

With the addition of a platform device mfd_cell pointer, MFD drivers
can go back to passing platform data back to their sub drivers.
This allows for an mfd_cell->mfd_data removal and thus keep the
sub drivers MFD agnostic. This is mostly needed for non MFD aware
sub drivers.

Cc: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Liam Girdwood <lrg@slimlogic.co.uk>
Cc: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Up and down movements were reversed, left and right buttons were swapped.
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>

Atarimouse fails to load as a module (with ENODEV), due to a brown paper
bag bug, misinterpreting the semantics of atari_keyb_init().

[geert] Propagate the return value of atari_keyb_init() everywhere
Signed-off-by: NMichael Schmitz <schmitz@debian.org>
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>

The Atari keyboard driver calls atari_mouse_interrupt_hook if it's set, not
atari_input_mouse_interrupt_hook. Fix below.

[geert] Killed off atari_mouse_interrupt_hook completely, after fixing another
incorrect assignment in atarimouse.c.
Signed-off-by: NMichael Schmitz <schmitz@debian.org>
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>

From http://www.analog.com/ADP5589:
The ADP5589 is an I/O port expander and keypad matrix decoder designed
for QWERTY type phones that require a large keypad matrix and expanded
I/O lines.
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>

These new platform-specific values can be used to set the fuzz parameter
passed to the input_set_abs_params() function for the ABS_X, ABS_Y and
ABS_PRESSURE axes.
Signed-off-by: NThierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This new parameter allows the polling frequency to be configured while
keeping the default of once every millisecond.
Signed-off-by: NThierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Depending on the quality of the touch panel, the time for the X-, X+, Y-
and Y+ inputs to settle may vary. The poll_delay parameter can be used
to override the default of 1 millisecond.

Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Kwangwoo Lee <kwangwoo.lee@gmail.com>
Signed-off-by: NThierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Finger touch events or very quick stylus events on low-quality panels
can cause the tsc2007 to read bogus values. Looking at oscilloscope
snapshots, this seems to be caused by the touch event disappearing
during the measurements. These bogus values result in misclicks, where
the X and Y values deviate from the real position.

Most of these misclicks can be filtered out by setting a low enough
threshold for the maximum resistance (which is loosely the inverse of
the pressure) allowed to consider a set of values valid. Since this
behaviour is largely dependent on the type and quality of the panel,
this commit introduces the max_rt parameter. The default value is kept
at MAX_12BIT.
Signed-off-by: NThierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

When the controller signals a pen-down event via the platform-specific
GPIO, while the sample values indicate an invalid measurement, the
measurement needs to be repeated.
Signed-off-by: NThierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

As reported by Jean-Francois Dagenais, the wheel algorithm caused a
divide by zero exception due to missing variable pre-initialization.
In fact it turned out that the whole algorithm had several problems.
It is therefore replaced with something that is known working.
Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Tested-by: NJean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Add option to specify irqflags in platfrom data.
Also update copyright notice.
Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Tested-by: NJean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Fix two issues in the threshold and completion interrupt mask and unmask
functions. According to the AD714x datasheets the highest stage completion
interrupt should be enabled. Fix mask computation.
Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Tested-by: NJean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Add missing input name and set up parent devices so input devices will
show in proper places in sysfs tree.
Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Tested-by: NJean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Apparently somewhere someone had a proprietary X driver. To get the
multitouch info, it uses some hack on the normal API instead of using
the multitouch protocol. Now that the multitouch info is transmitted
correctly it makes not much sense to keep it. Especially because it's
impossible to find this proprietary X driver anywhere, so the number of
users must be very low.
Signed-off-by: NÉric Piel <eric.piel@tremplin-utc.net>
Reviewed-by: NHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Multitouch info was reported only via a old protocol used by the
proprietary X driver from elantech. Let's report the multitouch info
also following the official MT protocol. It's semi-mt because the device
only reports the lowest/highest coordinates.

This was done following the multi-touch-protocol.txt documentation, and
inspired by the bcm5974 and elantech implementations. Testing was light
as there is not many applications using this protocol yet, but the X
synaptics driver didn't complain and the X multitouch driver behaved
correctly.
Signed-off-by: NÉric Piel <eric.piel@tremplin-utc.net>
Reviewed-by: NHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Using the info of the Dell/Ubuntu driver, described in the protocol
document, report both width and pressure when pressing 1 and 3
fingers, for the versions of the touchpad which support it.
Signed-off-by: NÉric Piel <eric.piel@tremplin-utc.net>
Reviewed-by: NHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This error handling code can be reached before ts_dev->input is
initialized, so it is safer to always use the original name,
input_dev.
Signed-off-by: NJulia Lawall <julia@diku.dk>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This support was partially present in the existing code (look for
"__tilegx__" ifdefs) but with this change you can build a working
kernel using the TILE-Gx toolchain and ARCH=tilegx.

Most of these files are new, generally adding a foo_64.c file
where previously there was just a foo_32.c file.

The ARCH=tilegx directive redirects to arch/tile, not arch/tilegx,
using the existing SRCARCH mechanism in the top-level Makefile.

Changes to existing files:

- <asm/bitops.h> and <asm/bitops_32.h> changed to factor the
  include of <asm-generic/bitops/non-atomic.h> in the common header.

- <asm/compat.h> and arch/tile/kernel/compat.c changed to remove
  the "const" markers I had put on compat_sys_execve() when trying
  to match some recent similar changes to the non-compat execve.
  It turns out the compat version wasn't "upgraded" to use const.

- <asm/opcode-tile_64.h> and <asm/opcode_constants_64.h> were
  previously included accidentally, with the 32-bit contents.  Now
  they have the proper 64-bit contents.

Finally, I had to hack the existing hacky drivers/input/input-compat.h
to add yet another "#ifdef" for INPUT_COMPAT_TEST (same as x86_64).
Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> [drivers/input]

This patch adds basic support for Freescale MPR121 capacitive touch
sensor.  It's an i2c controller with up to 12 capacitance sensing inputs.

Product information (data sheet, application notes) can be found here:
http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MPR121Signed-off-by: NZhang Jiejing <jiejing.zhang@freescale.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

There is no need to call synchronize_rcu() after a list insertion,
or a NULL->ptr assignment.

However, the reverse operations do need this call.
Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

The pendown gpio was requested but not configured for input.
Configure it for input.
Signed-off-by: NIgor Grinberg <grinberg@compulab.co.il>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Just set vref_mv in your platform config to use external vref. Otherwise
the internal one is used.
Signed-off-by: NAlexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Add support for encoders that have two detents per input signal period.
Signed-off-by: NJohan Hovold <jhovold@gmail.com>
Acked-by: NDaniel Mack <zonque@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Refactor state retrieval and event reporting in interrupt handler.
Remove a few empty lines.
Signed-off-by: NJohan Hovold <jhovold@gmail.com>
Reviewed-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: NDaniel Mack <zonque@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Tegra hardware design cannot reliably support an arbitrary set of keys
waking up the system. Modify wakeup logic so either any key wakes the
system up or none will do.
Signed-off-by: NRakesh Iyer <riyer@nvidia.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Signed-off-by: NAlexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

req.sample needs its own cacheline otherwise accessing req.msg fetches
it in again.

Note: This effect doesn't occur if the underlying SPI driver doesn't use
DMA at all.
Signed-off-by: NAlexander Stein <alexander.stein@systec-electronic.com>
Acked-by: NJonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

If the channel_mask setup fails when configuring it through sysfs,
return the error code to the caller instead of claiming success.
Signed-off-by: NVille Syrjala <syrjala@sci.fi>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

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

Make sure we are passing the same cookie in all calls to request_irq() and
free_irq().
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This variable is not used outside of the module so we should mark it
as static.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Update the KEYSC driver to make use of threaded IRQs with IRQF_ONESHOT
to improve interrupt latency. The driver is using udelay() in the ISR
to make sure the hardware has stabilized. Without using interrupt threads
this delay may affect the latency of the rest of the system.

Also pass dev_name() as string for /proc/interrupts.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Convert the KEYSC driver from MSTP bit control through a magic clock
string to making use of Runtime PM.

Also, update the system suspend/resume callbacks to drop the Runtime
PM reference in the case of wakeup disabled.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

With introduction of concurrency-managed work queues there is rarely
a point in creating private workqueues.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Add ghost key filtering support for the Nvidia Tegra matrix keyboard.
Signed-off-by: NRakesh Iyer <riyer@nvidia.com>
Reviewed-by: NHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>