CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.
Signed-off-by: NBill Pemberton <wfp5p@virginia.edu>
Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.
Signed-off-by: NBill Pemberton <wfp5p@virginia.edu>
Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: NJavier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

CONFIG_HOTPLUG is going away as an option so __devinitdata is no
longer needed.
Signed-off-by: NBill Pemberton <wfp5p@virginia.edu>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer
needed.
Signed-off-by: NBill Pemberton <wfp5p@virginia.edu>
Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Move the Tegra KBC platform data header out of arch/arm/mach-tegra, as
a pre-requisite of single zImage.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Use clk_prepare/clk_unprepare as required by the generic clk framework.
Signed-off-by: NPrashant Gaikwad <pgaikwad@nvidia.com>
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Acked-by: NDmitry Torokhov <dtor@mail.ru>

When platform keymap is not supplied to matrix_keypad_build_keymap()
and device tree support is enabled, try locating specified property
and load keymap from it. If property name is not defined, try using
"linux,keymap".

Based on earlier patch by Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Change matrix-keymap helper to be out-of-line, like sparse keymap,
allow the helper perform basic keymap validation and return errors,
and prepare for device tree support.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Following commit broke DT support for tegra-kbc by removing pdata
allocation completely:

   commit 023cea0e
   Author: Shridhar Rasal <srasal@nvidia.com>
   Date:   Fri Feb 3 00:27:30 2012 -0800

       Input: tegra-kbc - allow skipping setting up some of GPIO pins

This patch restores it.
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This is an incremental patch updating to the revised bindings for
matrix keyboards.

This includes an optional "linux,fn-keymap" binding that is not yet
implemented, that will be used to specify the Fn-key modifier layout
if needed.
Signed-off-by: NOlof Johansson <olof@lixom.net>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
Acked-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Allow marking some of GPIO pins as ignored to to avoid continuously
generating KBC input events.
Signed-off-by: NShridhar Rasal <srasal@nvidia.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Enable keypress interrupt to support wakeup from low power state.
Signed-off-by: NRakesh Iyer <riyer@nvidia.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Tegra kbc cannot detect exact keypress causing wakeup in interrupt mode.
Allow wakeup keypress to be reported for certain platforms.
Signed-off-by: NRakesh Iyer <riyer@nvidia.com>
Acked-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This adds a simple device tree binding to the tegra keyboard controller.

Also, mark the default keymap as __devinitdata since it is not referenced
after boot.
Signed-off-by: NOlof Johansson <olof@lixom.net>
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>

Take spinlock when entering ISR and timer routine to ensure that we do not
race while enabling/disabling FIFO interrupts.

Also we do not need to take teh spinlock in tegra_kbc_startremove() since
interrupt is completely disabled.
Tested-by: NRakesh Iyer <riyer@nvidia.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

For wakeup to be reliable, kbc needs to be in interrupt mode before suspend.
Created common routine to control the FIFO interrupt.
Added synchronization to ensure orderly suspend.
Signed-off-by: NRakesh Iyer <riyer@nvidia.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

If kzalloc for kbc fails, then we have NULL pointer dereference while
calling input_free_device(kbc->idev) in the error handling.
So it is safer to always use the original name, input_dev.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Fix a constant definition and computation of polling time.

[dtor@mail.ru: switched to using DIV_ROUND_UP as was suggested by
 Thierry Reding <thierry.reding@avionic-design.de>]
Signed-off-by: NRakesh Iyer <riyer@nvidia.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

To support key repeats, keyboard needs to be setup as an autorepeating
device.
Signed-off-by: NRakesh Iyer <riyer@nvidia.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>

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>

Add Fn keymap support to allow for internal processing of Fn keys.
Signed-off-by: NRakesh Iyer <riyer@nvidia.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Correct key mapping for Left Meta key.
Signed-off-by: NRakesh Iyer <riyer@nvidia.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Fix build error introduced by variable name change.
Signed-off-by: NRakesh Iyer <riyer@nvidia.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This patch adds support for the internal matrix keyboard controller for
Nvidia Tegra platforms.
Signed-off-by: NRakesh Iyer <riyer@nvidia.com>
Reviewed-by: NTrilok Soni <tsoni@codeaurora.org>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>