input: touch: synaptics: Reset the device when blanking display

This should be backed out as soon as fixed firmware becomes available!

Something is iffy with the controller that gets triggered under
certain environmental conditions and makes it hang or register ghost
touches for a few minutes. Instead of waiting for it to fix itself,
have the controller forcefully reset whenever the panel is cycled so
a manual recovery is possible.

This is not a fix or a workaround, just a recovery mechanism :(

Change-Id: I39a3ab99b9c5701eed047d125ffa12ea459ebae9
net/l2tp: don't fall back on UDP [get|set]sockopt

The l2tp [get|set]sockopt() code has fallen back to the UDP functions
for socket option levels != SOL_PPPOL2TP since day one, but that has
never actually worked, since the l2tp socket isn't an inet socket.

As David Miller points out:

  "If we wanted this to work, it'd have to look up the tunnel and then
   use tunnel->sk, but I wonder how useful that would be"

Since this can never have worked so nobody could possibly have depended
on that functionality, just remove the broken code and return -EINVAL.

Change-Id: Ia6c09487e92d1ee4e8d1d22a6273034b22272a2f
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Acked-by: James Chapman <jchapman@katalix.com>
Acked-by: David Miller <davem@davemloft.net>
Cc: Phil Turnbull <phil.turnbull@oracle.com>
Cc: Vegard Nossum <vegard.nossum@oracle.com>
Cc: Willy Tarreau <w@1wt.eu>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 05ab2da7e2e9734d523d2af44186f5e444399a24)
arm/dt: Don't mess with vdd during idle screen PC

 * This is causing problems with our touchscreen. Don't
   mess with this regulator as it can cause mass chaos
   due to desync between panel and TS.

Change-Id: Ibfdc6455bf1ae003811bf60d01fcc1a6639559d2
mmc: core: Fix power class config for HS400

Use the correct power class field from the extended CSD register
for HS400 mode as defined in the eMMC5.0 specification.

CRs-fixed: 690341
Change-Id: Ie10e35941fd3c6ee49c686f721bf5af6fcd74862
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
qup_i2c: Initialize I2C resource before registering.

Due to mismatch in sequence of initializing the
I2C resources  and registering device,  issues seen
while probing clients. This patch corrects the sequence.

CRs-Fixed: 581007
Change-Id: I98f0e73ce1ed1213409d5700f7a78e722e451ec0
Signed-off-by: Sana Venkat Raju <c_vsana@codeaurora.org>

qup_i2c: Correct free memory call

Correct freeing of memory, which is allocated using
the devm prefixed API, to free it using devm_kfree rather
then kfree.

CRs-Fixed: 582597
Change-Id: If1aa9bcd86bb3a7d35adc5630ff19ad08bbdf762
Signed-off-by: Gilad Avidov <gavidov@codeaurora.org>

qup_i2c: dump gpio config on error

Dump the configuration of relevant GPIOs
on timeout error.

Change-Id: Iab5aa57befc146c232d12759990b0b8a23a68fe1
Signed-off-by: Gilad Avidov <gavidov@codeaurora.org>

qup_i2c: export qup_i2c_init_driver

Drivers like onsemi-ncp6335d and fan53555 are clients of i2c-qup driver.
In some targets, these clients have to initialize and probe early before
the i2c-qup driver is ready. Hence export qup_i2c_init_driver to make sure
i2c-qup driver is ready when its clients need to probe.

Change-Id: I0f866d1c4239f9c72f6753674c2283e97f3a3691
Signed-off-by: Ke Liu <keliu@codeaurora.org>

qup_i2c: improve PM functionality

Move system-PM functionality to noirq stage. Remove
the incorrect active-only clock path-voting setting.
Resolve synchronization of concurent transition of
system and runtime PM.

Change-Id: I2753557482da7a48a596e4b660165b4e2af0f854
Signed-off-by: Gilad Avidov <gavidov@codeaurora.org>

qup_i2c: support for configuarable noise rejection

allow to configure noise rejection value from device tree
which helps filter spikes in the i2c lines.

CRs-Fixed: 626250
Change-Id: If66132c8cc444294e4e6e275ece8b85108cf7abb
Signed-off-by: Ankit Gupta <ankgupta@codeaurora.org>

qup_i2c: Improve recovery from core and slave bad state

Unexpected noise, and/or unexpected behavior from a slave
may put the whole I2C bus in unworkable state. Clear I2C
bus state using HW command instead of bit-banging to avoid
assumption about GPIO recovery config.

Change-Id: I8d1d0002392f9ec9bc0db146aa0ce3e138334644
Signed-off-by: Gilad Avidov <gavidov@codeaurora.org>
ARM: dts: msm: Add CX regulator Phandle to MDP node

The Phandle might change for different versions of
the msm8974 chip. Add the proper Phandle of CX regulator
to 8974pro version.

Change-Id: If51fbac539922c55a5ce8583b21cc68419c6f0fc
Signed-off-by: Xiaoming Zhou <zhoux@codeaurora.org>
Add touch pressure support in synaptics touch driver.

Enabled touch pressure report in touch sensor. Read and report
pressure data to input class.

Change-Id: Idb4048725801cb14112e88ab9d23eb0813a229c8