Documentation: mfd/max77686 devicetree bindings update

This change documents the enable/disable-low-jitter
bindings for the mfd/max77686.

Signed-off-by: Will Drewry <wad@chromium.org>
TEST=none
BUG=chrome-os-partner:15785

Change-Id: I0c980d5a2fa730c8d8681041a5627d84c3f1f4bb
Reviewed-on: https://gerrit.chromium.org/gerrit/38238
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Olof Johansson <olofj@chromium.org>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Commit-Ready: Will Drewry <wad@chromium.org>
Tested-by: Will Drewry <wad@chromium.org>

CHROMIUM: staging: gdm72xx: protect access of rx / tx structs

This patch applies spinlock to protect access to rx / tx structs in
certain call sites, which fixes the following crash in gdm_suspend.
It also fixes usb_set_intfdata() in gdm_usb_probe to avoid setting an
already freed phy_dev.

<5>[ 4996.815018] [<7f0074b0>] (gdm_suspend+0x1c/0x2b4 [gdmwm]) from [<803020a4>] (usb_suspend_both+0x80/0x1a0)
<5>[ 4996.815055] [<803020a4>] (usb_suspend_both+0x80/0x1a0) from [<80302c84>] (usb_runtime_suspend+0x38/0x64)
<5>[ 4996.815089] [<80302c84>] (usb_runtime_suspend+0x38/0x64) from [<802becc0>] (__rpm_callback+0x48/0x78)
<5>[ 4996.815118] [<802becc0>] (__rpm_callback+0x48/0x78) from [<802bf8dc>] (rpm_suspend+0x394/0x5ec)
<5>[ 4996.815145] [<802bf8dc>] (rpm_suspend+0x394/0x5ec) from [<802c0550>] (pm_runtime_work+0x8c/0xa4)
<5>[ 4996.815177] [<802c0550>] (pm_runtime_work+0x8c/0xa4) from [<800456cc>] (process_one_work+0x264/0x438)
<5>[ 4996.815209] [<800456cc>] (process_one_work+0x264/0x438) from [<80045acc>] (worker_thread+0x22c/0x3b8)
<5>[ 4996.815239] [<80045acc>] (worker_thread+0x22c/0x3b8) from [<8004a43c>] (kthread+0x9c/0xa8)
<5>[ 4996.815270] [<8004a43c>] (kthread+0x9c/0xa8) from [<8000f160>] (kernel_thread_exit+0x0/0x8)
<0>[ 4996.815295] Code: e92d4000 e8bd4000 e2800020 eb4ab9a1 (e5905000)

BUG=chrome-os-partner:16223
TEST=Run network_MobileSuspendResume.wimax_stress test.

Change-Id: I5a45f7e5fc3ca35681005fea40303f4c8c017ac0
Signed-off-by: Ben Chan <benchan@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/38172
Reviewed-by: Sameer Nanda <snanda@chromium.org>

CHROMIUM: add DEVTMPFS_SAFE support

If DEVTMPFS_SAFE==y, automount devtmpfs with nosuid and noexec.

BUG=chromium-os:32629
TEST=adhoc
mount | grep devtmpfs

Change-Id: I7a330fb7bd1e0da7e42fe2194a958c6878c0ce68
Signed-off-by: Elizabeth Fong-Jones <ellyjones@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/38061
Reviewed-by: Olof Johansson <olofj@chromium.org>

CHROMIUM: cros5250-common: add enable-low-jitter to max77686

Signed-off-by: Will Drewry <wad@chromium.org>
BUG=chrome-os-partner:15785
TEST=boots with change 38180 and i2cget returns 0x0f as per that change.

Change-Id: I70f305c23ee8205f9af3e81addbcaa350434a27a
Reviewed-on: https://gerrit.chromium.org/gerrit/38229
Reviewed-by: Doug Anderson <dianders@chromium.org>
Commit-Ready: Will Drewry <wad@chromium.org>
Tested-by: Will Drewry <wad@chromium.org>

CHROMIUM: mfd/max77686: enable low-jitter mode

This change adds three valid device-tree configured settings
for the max77686 "low jitter" mode:
* max77686,enable-low-jitter
* max77686,disable-low-jitter
* (no entry)

With either entry, the third bit of the 32KHZ register
is updated.

Low jitter mode is desirable on some platforms with components that are
sensitive to the clock signal.  The clock sometimes appears to stutter when
being updated.  For most uses, this is inconsequential, but if the RTC is
supplying a signal to more sensitive hardware, it can cause undesirable
results.

BUG=chrome-os-partner:15785
TEST=It boots :) semenzato@ has confirmed that if the register is set, the errors do not reproduce with the scope.

To check the register state:
  $ i2cget -f -y 0 0x9 0x7f
  0x0f

Reported-by: Luigi Semenzato <semenzato@chromium.org>
Suggested-by: Luigi Semenzato <semenzato@chromium.org>
Signed-off-by: Will Drewry <wad@chromium.org>
Change-Id: Ib40d1d0728535b10c8438eaa6eacd74fb83cb697
Reviewed-on: https://gerrit.chromium.org/gerrit/38180
Reviewed-by: Doug Anderson <dianders@chromium.org>
Commit-Ready: Will Drewry <wad@chromium.org>
Tested-by: Will Drewry <wad@chromium.org>
Reviewed-by: Olof Johansson <olofj@chromium.org>

CHROMIUM: ASoC: samsung: Spring is using max98095 codec

Spring is also using the Maxim max98095 codec for audio.
Add it to the list of supported boards.

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
BUG=chrome-os-partner:14490
TEST=on Spring, plug a headset, play a video on Youtube and hear the
sound.

Change-Id: If17a3ba240943412acf03b24058218c40781944f
Reviewed-on: https://gerrit.chromium.org/gerrit/38205
Reviewed-by: Dylan Reid <dgreid@chromium.org>
Commit-Ready: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>

CHROMIUM: md: bootcache save string args

dm-bootcache now makes a separate copy of any string arguments
that are passed to it.

BUG=chromium-os:35683
TEST=ran bootcachetest on stumpy, arm

Change-Id: I48f62671377109a596eea150361c492fe19a96a7
Signed-off-by: Paul Taysom <taysom@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37736
Reviewed-by: Mandeep Singh Baines <msb@chromium.org>

drm/exynos: Implement DPMS_STANDBY for HDMI

Enable the "blue screen" when we get a DPMS_STANDBY request for HDMI.
This allows us to turn off the mixer, but maintain audio over HDMI when
we turn the screen idle.

BUG=chrome-os-partner:15709
TEST=Tested on snow by ensuring audio continues to play during idle

Change-Id: I2639c0d1cd7384881b5fd651039fef71b27c76ed
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/38122
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>

UPSTREAM: ath9k_hw: Fix wrong peak detector DC offset

An issue is reported in AR9462 that NF_cal_not_done is not observed
when HW peak detector calibration is disabled. At that state, the HW
is stuck at NF calibration which prevents tx output. The root cause
is wrong peak detector offset calibrated by HW. To resolve this issue,
peak detector calibration is done manually by SW for AR9462.

Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: Paul Stewart <pstew@chromium.org>
BUG=chrome-os-partner:36266
TEST=Boot and run bandwith tests

Change-Id: I9b79e9b51ef86cc73800b7bb3e80875b1c0e2705
Reviewed-on: https://gerrit.chromium.org/gerrit/38025
Reviewed-by: mukesh agrawal <quiche@chromium.org>
Commit-Ready: Paul Stewart <pstew@chromium.org>
Tested-by: Paul Stewart <pstew@chromium.org>

CHROMIUM: mwifiex: Add SDIO register debugging

This patch retrieves firmware/hardware status upon tx watchdog
timeout or command timeout. Hopefully with this debug patch we
can get some clues on what is causing the timeout issue.

BUG=chrome-os-partner:15129
TEST=Boot, connect to network

Change-Id: I058fe07746e6a1ccd8debde0c0d3d8debd700502
Signed-off-by: Paul Stewart <pstew@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37972

CHROMIUMOS: Revert "mwifiex: Set timeout for mwifiex_wait_queue_complete"

This was meant to isolate issues with command timeouts for debugging
purposes.  We are proceeding with a different debugging path now.

This reverts commit e0514c155f95de286656a3d4306df852ea107987.

Signed-off-by: Paul Stewart <pstew@chromium.org>
BUG=chrome-os-partner:15129
TEST=Boot, connect to network

Change-Id: I9b2fa79803605bc8b92d93a57fb0c850113c9fac
Reviewed-on: https://gerrit.chromium.org/gerrit/38119
Reviewed-by: mukesh agrawal <quiche@chromium.org>
Commit-Ready: Paul Stewart <pstew@chromium.org>
Tested-by: Paul Stewart <pstew@chromium.org>

CHROMIUM: config: enable usb net drivers (dm9601/net1080/rtl8150) for all targets

Some configs had these drivers enabled while others did not.  Update the
common arch configs to all enable these drivers.

BUG=chromium-os:35943
TEST=`emerge-daisy chromeos-kernel` included these three drivers
TEST=`emerge-stumpy chromeos-kernel` included these three drivers
TEST=`emerge-x86-alex chromeos-kernel` included these three drivers

Change-Id: I9615109a5b17af293855595ba8f06f397db360c4
Signed-off-by: Mike Frysinger <vapier@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37296
Reviewed-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Grant Grundler <grundler@chromium.org>

CHROMIUM: arm: exynos: fix math in ppmu driver

The define doesn't wrap the argument properly so the math ends up wrong.

BUG=chromium-os:36402
TEST=check /proc/cpu/alignment and "perf top -G --symbols do_alignment_ldrstr" after applying

Change-Id: Ifd342de96c682bc2a2acaf7a9bfb73f0d5d2f516
Signed-off-by: Olof Johansson <olofj@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/38123
Reviewed-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Bryan Freed <bfreed@chromium.org>

CHROMIUM: mfd: chromeos_ec: support command version numbers

ec supports versioned command and non-versioned command should be
deprecated.  To minimize changes to ec clients, driver will accept not
8-bits but 16-bits command code and interpret top 8-bits as version
number.  Because current ec clients all use commands of version-zero,
they will not be effected by this API change.

BUG=chrome-os-partner:15609
TEST=manual, add debugging sysfs entry to exercise kernel code path, and
     make sure ec driver still works on snow.

Change-Id: I640e7756baddd20d8bc14c7f8ba10c13e60ed8ff
Signed-off-by: Che-Liang Chiou <clchiou@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37496
Reviewed-by: Simon Glass <sjg@chromium.org>

CHROMIUM: Input: atmel_mxt_ts - recalibrate on system resume

In the suspend path, if we don't allow device wakeup, we put the
chip into deepsleep mode and the chip stops scanning during suspen.
On resume if the environment changes, the calibrated baseline before
suspend will no longer be valid.

In this patch we force a recalibration on resume if device wakeup is
disabled during suspend to handle the environment change.

Signed-off-by: Yufeng Shen <miletus@chromium.org>
BUG=chrome-os-partner:16171
TEST=I don't have a controlled environment to test this. So I only test
     normal suspend/resume to make sure no noise touches happen on resume
     and touch devices work as expected.
     1. With lid open, using powerd_suspend to suspend the system. Wakeup
     the system and make sure the touch device still works.
     Run "demsg | grep atmel"  to make sure no calibration message reported.
     2. Use lid close to suspend the system. Wakeup the system and make
     sure touch device still works.
     Run "demsg | grep atmel"  to make sure calibration message are reported.
     3. Also notice the case of lid open caused system resume, if something is
     on the touch surface (like opening the lid and quickly put the palm on the
     touch surface for a while), the system will get calibrated into a wrong
     baseline and touch device then won't work.

Change-Id: I62cb47fa1c97917a2c0f968e41ee4cd13f12187c
Reviewed-on: https://gerrit.chromium.org/gerrit/38051
Reviewed-by: Benson Leung <bleung@chromium.org>
Commit-Ready: Yufeng Shen <miletus@chromium.org>
Tested-by: Yufeng Shen <miletus@chromium.org>

CHROMIUM: Input: cyapa - Remove CYAPA_CMD_GROUP_CTRL

Remove CONTROL_BASE define and CYAPA_CMD_GROUP_CTRL
command class.

Signed-off-by: Benson Leung <bleung@chromium.org>
BUG=chromium-os:21047
TEST=builds clean.

Change-Id: I6f62508f70af2c0f91c8d3d5c97cc3cdd5439034
Reviewed-on: https://gerrit.chromium.org/gerrit/37741
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Commit-Ready: Benson Leung <bleung@chromium.org>
Tested-by: Benson Leung <bleung@chromium.org>

arm: exynos: Retry "wfi" on failure

We are seeing suspend failures occuring once in a while. In case
there still exists a race with another interrupt let us retry "wfi"
a 100 times before failing.

BUG=chrome-os-partner:14956
TEST=suspend_stress_test with no suspend failures yet.

Change-Id: I1c59ae77e12be40dec1ee027f8f1d0e0a2a2f66c
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Reviewed-on: https://gerrit.chromium.org/gerrit/37991
Reviewed-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Jon Kliegman <kliegs@chromium.org>
Commit-Ready: Jon Kliegman <kliegs@chromium.org>
Tested-by: Jon Kliegman <kliegs@chromium.org>

CHROMIUM: pm-check: make pm-check sum function stronger

Add a rotate to the sum function and switch back to 32-bit.
The rotate seems to help in catching more instances of corruption than
a pure checksum.  So far we haven't seen sum + ror miss a corruption
in over 2000 known cases whereas pure sum misses 10 of those.  There
seems to be some kind of optimizer bug when I try to use 64-bit + ror
so let's go back to 32-bit and take a speed hit.  This code seems to
run in about 760 msec vs about 540 msec for the pure checksum.

Signed-off-by: Sonny Rao <sonnyrao@chromium.org>
BUG=chrome-os-partner:16148
TEST=run suspend_stress_test, ensure errors are still detected

Change-Id: I0adaec6f73d9acd752059840f37f707d5d2a2f59
Reviewed-on: https://gerrit.chromium.org/gerrit/38053
Reviewed-by: Doug Anderson <dianders@chromium.org>
Commit-Ready: Sonny Rao <sonnyrao@chromium.org>
Tested-by: Sonny Rao <sonnyrao@chromium.org>

drm/exynos: add the plumbing for drm debugfs

Also added simple gem object counting.

BUG=chromium-os:36060
TEST=Verified that the debugfs interface is present.

localhost ~ # cat /sys/kernel/debug/dri/0/exynos_gem_objects
5 objects, 12709888 bytes
localhost ~ # stop ui
ui stop/waiting
localhost ~ # cat /sys/kernel/debug/dri/0/exynos_gem_objects
1 objects, 4227072 bytes

Change-Id: I4652eedbdda5be68f055b45e316c999114d80b3b
Signed-off-by: Mandeep Singh Baines <msb@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37858

CHROMIUM: Input: cyapa - Remove CYAPA_MAX_TOUCHES define

It's only used once in struct cyapa_reg_data, so lets just
hard code it there.

Signed-off-by: Benson Leung <bleung@chromium.org>
BUG=chromium-os:21047
TEST=builds clean.

Change-Id: I6d39e70f369b0825238022a38111e2fa42862c5e
Reviewed-on: https://gerrit.chromium.org/gerrit/37745
Reviewed-by: Benson Leung <bleung@chromium.org>
Tested-by: Benson Leung <bleung@chromium.org>
Commit-Ready: Benson Leung <bleung@chromium.org>

CHROMIUM: Input: cyapa - compare return value of memcmp to 0

Check the return value of memcmp for more clarity.

Signed-off-by: Benson Leung <bleung@chromium.org>
BUG=chromium-os:21047
TEST=builds clean

Change-Id: Ie2235a59df9347d938917e86d2c69d27af073338
Reviewed-on: https://gerrit.chromium.org/gerrit/37744
Reviewed-by: Benson Leung <bleung@chromium.org>
Tested-by: Benson Leung <bleung@chromium.org>
Commit-Ready: Benson Leung <bleung@chromium.org>

CHROMIUM: Input: cyapa - change to xy_hi and x_lo y_lo

Based on upstream feedback, change these variable names.

Signed-off-by: Benson Leung <bleung@chromium.org>
BUG=chromium-os:21047
TEST=builds clean.

Change-Id: Ieb16c22fcc95c657f493f9f8c69854aa475e391e
Reviewed-on: https://gerrit.chromium.org/gerrit/37743
Reviewed-by: Benson Leung <bleung@chromium.org>
Tested-by: Benson Leung <bleung@chromium.org>
Commit-Ready: Benson Leung <bleung@chromium.org>

CHROMIUM: Input: cyapa - Remove gen enum

Remove the gen enum. The other two values of the enum
aren't used anywhere in this driver (we only support Gen3).

Signed-off-by: Benson Leung <bleung@chromium.org>
BUG=chromium-os:21047
TEST=Builds clean.

Change-Id: If1f26dbccb64fc852151d8c5de6ea3577213f5f9
Reviewed-on: https://gerrit.chromium.org/gerrit/37742
Reviewed-by: Benson Leung <bleung@chromium.org>
Tested-by: Benson Leung <bleung@chromium.org>
Commit-Ready: Benson Leung <bleung@chromium.org>

CHROMIUM: cpufreq_interactive:  correct cpu idle time calculation

Each cpu has a timer that tracks load and decides whether to adjust the
clock for that processor.  The timer callback may, however, execute on
any cpu, not just the one it manages.  Fix the idle time calculation to
take this into consideration--it was assuming smp_processor_id() returned
the cpu id of the processor to manage, causing incorrect decisions.

Signed-off-by: sleffler@chromium.org
BUG=none
TEST=run cpu intensive benchmark like octane on a multi-core system; check trace results and note that sometimes v8 runs for extended times on cpu operating at low freq (contributing to poor score)

Change-Id: I2b5c21b5d8cae31679e844ac67037cc760c5dfc0
Reviewed-on: https://gerrit.chromium.org/gerrit/37830
Reviewed-by: Sonny Rao <sonnyrao@chromium.org>
Reviewed-by: Sameer Nanda <snanda@chromium.org>
Tested-by: Sam Leffler <sleffler@chromium.org>
Commit-Ready: Sam Leffler <sleffler@chromium.org>

CHROMIUM: ARM: MALI: add sysfs file which prints amount of memory allocated

BUG=chromium-os:36060
TEST=Verified that the sysfs file is present.

localhost ~ # cat /sys/devices/platform/mali.0/memory
122068992 bytes
localhost ~ # stop ui
ui stop/waiting
localhost ~ # cat /sys/devices/platform/mali.0/memory
28672 bytes

Change-Id: Ic11cf2470a6e17676da48ce4aa3a73444a475942
Signed-off-by: Mandeep Singh Baines <msb@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37862

drm/exynos: make event parameter optional for page_flip

We no longer need to enforce that event is non-NULL. We also need
to be able to call page_flip with a NULL event so that we can
call it from the mode_set paths.

BUG=chrome-os-partner:15349,chrome-os-partner:14965
TEST=Multiple VT switch, HDMI plug/unplug, sign in/out, suspend/resume,
     idle suspend/resume.

Change-Id: Ia139cd36a3f78fbf3c96651176a42289f07722e6
Signed-off-by: Mandeep Singh Baines <msb@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37572

Revert "drm/exynos: implement an optimized page_flip"

This reverts commit 69518a3c650de9186f345a5e7feaddbadfc394d0.

We want to be able to call page_flip from mode_set and mode_set_base
so that all functions which cause a buffer to be scanned out are
synchronized.

BUG=chrome-os-partner:15349,chrome-os-partner:14965
TEST=Multiple VT switch, HDMI plug/unplug, sign in/out, suspend/resume,
     idle suspend/resume.

Change-Id: I198962b65bb8a1ab5b885c053c19f7f8077cb9c6
Signed-off-by: Mandeep Singh Baines <msb@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37571

CHROMIUM: drm/i915: Propermy terminate DMI list

Not sure why this wasn't triggered by our testing, but
Intel reports that they had the issue.

BUG=chromium-os:36276
TEST=by hand

Change-Id: Iad63bca07eab05e750bb165387f028e1dbf3de54
Reviewed-on: https://gerrit.chromium.org/gerrit/37921
Reviewed-by: Stuart Abercrombie <sabercrombie@chromium.org>
Reviewed-by: Russell Webb <russell.webb@intel.com>
Tested-by: Russell Webb <russell.webb@intel.com>
Reviewed-by: Olof Johansson <olofj@chromium.org>
Commit-Ready: Stéphane Marchesin <marcheu@chromium.org>

drm/exynos: move checks outside of exynos_drm_crtc_update

Refactor the code so that exynos_drm_crtc_update cannot fail.

BUG=chrome-os-partner:15349,chrome-os-partner:14965
TEST=Multiple VT switch, HDMI plug/unplug, sign in/out, suspend/resume,
     idle suspend/resume.

Change-Id: I77335d6142f2363ca19b113ddcd5909c3a067121
Signed-off-by: Mandeep Singh Baines <msb@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37570
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>

drm/exynos: remove NULL check from exynos_drm_overlay_update

We really shouldn't be handling this NULL pointer. If there
is a NULL pointer here, we've hit a kernel bug. No need for a
BUG_ON since the kernel will panic on any NULL dereference.

This allows us to make exynos_drm_overlay_update void.

BUG=chrome-os-partner:15349,chrome-os-partner:14965
TEST=Multiple VT switch, HDMI plug/unplug, sign in/out, suspend/resume,
     idle suspend/resume.

Change-Id: I39c4ee44260eaeb98594dfbe01f2b885039ab23c
Signed-off-by: Mandeep Singh Baines <msb@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/35248
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>

KDS: fix deadlock in early release path

We deadlock, under the following scenario:

1) A grabs lock non-exclusive
2) B grabs lock exclusive
3) C grabs lock non-exclusive
4) B releases lock before ever acquiring
5) A releases lock

After 5, C should acquire the lock but the current implementation
does not do this.

BUG=chromium-os:36071,chrome-os-partner:15349,chrome-os-partner:14965
TEST=I had some patches which were seeing the deadlock. After this fix,
     I no longer get a deadlock.
TEST=Multiple VT switch, HDMI plug/unplug, sign in/out, suspend/resume,
     idle suspend/resume.

Change-Id: I4df35f08f9f31ad95fbe686e48bf421e25f9930b
Signed-off-by: Mandeep Singh Baines <msb@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37569
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>

drm/ptn-exynos: Synchronize PTN init with hotplug

Gate the DP hotplug work function on ptn3460 initailization if the
bridge chip is present. This ensures we can completely set up the
hardware before trying to read EDID and configure video.

BUG=chrome-os-partner:11158
TEST=Tested on snow, boot/suspend-resume/idle suspend-resume

Change-Id: I7f2ca812bdaaaba5350deed29939afec5d4e8a23
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/36794

drm/ptn3460: Remove free_me

This free_me variable is ugly and useless. Since we don't even define
the platform_data struct outside of this driver, it'd be hard for
arch-specific code to instantiate it.

BUG=None
TEST=Tested on snow

Change-Id: I87564b43d53c2ec02bdf6a4ef73cc7f69c4a2ce9
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37624

drm/exynos: Consolidate suspend/resume

Remove all of the pm_ops from the various platform devices and move to a
consolidated suspend/resume process from the drm driver. This allows us
to properly order operations when we suspend/resume. It also makes the
dpms tracking in exynos_drm_encoder meaningful.

BUG=None
TEST=Tested with/without hdmi & idle/lid suspend/resume. No regressions.

Change-Id: I25bab3843c87960416b1218a48c60c5124404aff
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37642
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>

drm/exynos: dp: Mask interrupts instead of disable

Instead of running disable_irq on suspend, and subsequently enable_irq
on resume, just mask off the interrupt before suspending. This avoids
the ugly disable_irq in probe, and any future issues with mismatched irq
enable/disables.

BUG=None
TEST=Tested on snow idle suspend/lid suspend, boot, etc.

Change-Id: I0e913b1c563b3b0081c074eac52c8d887d5dca58
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37621
Reviewed-by: Mandeep Singh Baines <msb@chromium.org>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>

drm/exynos: Convert dp driver to use panel_ops

This patch changes the dp driver to implement panel_ops. This gets
rid of the dp_dev hack that was introduced when dp moved into drm.

BUG=chrome-os-partner:11158, chrome-os-partner:9855,
    chrome-os-partner:10717
TEST=Tested on snow, no regressions detected

Change-Id: Ia0e2939f635a2406a1ac29e172cb1ae59d13acbe
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/36701
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>

drm/exynos: Refactor manager/display/overlay

The exynos_drm_manager/display/overlay architecture wasn't really
serving its purpose. It attempted to split callbacks into logical
sections, but those sections didn't really make sense, and required us
to have a layer of abstraction such as exynos_drm_hdmi on top of the
controller and panel to call the appropriate functions.

This patch removes manager/display/overlay as well as exynos_drm_hdmi,
and adds a new abstraction which splits the callbacks to controller and
panel.

Right now, this just cleans things up, making the code a little more
readable. In the short term, it allows us to hook fimd into just
the controller side, and add dp/mipi as panel implementations. In the
long term, it removes all of the device pointers, so we should be able
to remove all of the various platform drivers more easily.

BUG=chrome-os-partner:11158,chrome-os-partner:10717
TEST=Tested on snow, hdmi hotplugged, booted with/without hdmi,
suspend/resume tested. No regressions detected.

Change-Id: Ia1bd6bbd67d49af2abecf36c43bfe765ae00f38d
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/36477
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>

drm/exynos: Fix up encoder->dpms locking

encoder->dpms was both being read and written without the struct mutex
lock. Fix this so we're synchronized.

BUG=None
TEST=Tested on snow, ensured we only called dpms once

Change-Id: I7d2b34e908273660c31c0290e3c6c632556297fc
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37643
Reviewed-by: Mandeep Singh Baines <msb@chromium.org>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>

CHROMIUM: Input: cyapa - Use static const for unique_str

Use static contst for unique_str "CYTRA" used to compare
with product_id.

Signed-off-by: Benson Leung <bleung@chromium.org>
BUG=chromium-os:21047
TEST=Builds clean.

Change-Id: I667cfe0dfef652e0a377079bfacedc41b8412891
Reviewed-on: https://gerrit.chromium.org/gerrit/37740
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Commit-Ready: Benson Leung <bleung@chromium.org>
Tested-by: Benson Leung <bleung@chromium.org>

CHROMIUM: Input: cyapa - Use u8 instead of unsigned char

Change type of cmd and len in cyapa_cmd_len to u8 for consistency
with the rest of the driver.

Signed-off-by: Benson Leung <bleung@chromium.org>
BUG=chromium-os:21047
TEST=Builds clean.

Change-Id: I726546c730e54db88d683e14199df83bc34b2311
Reviewed-on: https://gerrit.chromium.org/gerrit/37739
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Commit-Ready: Benson Leung <bleung@chromium.org>
Tested-by: Benson Leung <bleung@chromium.org>

CHROMIUM: Input: cyapa - Clean up whitespace and comments

Minor cleanup for preparation for upstreaming this driver.

* Add attribution for djkurtz and bleung for cleanup and restructuring
* Remove kernel_doc comments for i2c_reg_read and i2c_reg_write
* Fix comment for cyapa_poll_state for correct ms values and spellcheck.

Signed-off-by: Benson Leung <bleung@chromium.org>
BUG=chromium-os:21047
TEST=Builds clean

Change-Id: I75028fb0a674e3bb30aae4c5af4a8c581a734065
Reviewed-on: https://gerrit.chromium.org/gerrit/37738
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Commit-Ready: Benson Leung <bleung@chromium.org>
Tested-by: Benson Leung <bleung@chromium.org>

UPSTREAM: xhci: fix null-pointer dereference when destroying half-built segment rings

xhci_alloc_segments_for_ring() builds a list of xhci_segments and links
the tail to head at the end (forming a ring). When it bails out for OOM
reasons half-way through, it tries to destroy its half-built list with
xhci_free_segments_for_ring(), even though it is not a ring yet. This
causes a null-pointer dereference upon hitting the last element.

Furthermore, one of its callers (xhci_ring_alloc()) mistakenly believes
the output parameters to be valid upon this kind of OOM failure, and
calls xhci_ring_free() on them. Since the (incomplete) list/ring should
already be destroyed in that case, this would lead to a use after free.

This patch fixes those issues by having xhci_alloc_segments_for_ring()
destroy its half-built, non-circular list manually and destroying the
invalid struct xhci_ring in xhci_ring_alloc() with a plain kfree().

BUG=chrome-os-partner:15124
TEST=Hard to reproduce since the underlying bug was fixed already.

Has been accepted upstream by Sarah Sharp at
https://lkml.org/lkml/2012/11/12/313

Change-Id: I8035a390ab410873b97bce23dded5f0cfc14dcf6
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/36745
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>

CHROMIUM: tcp: Avoid merging segments on the OOO queue into a cloned SKB

TCP tries to merge socket buffers in the out-of-order queue when they
are sequential. This is generally a good thing to save memory and speed
up processing, but can lead to problems when it expands a buffer that
has previously been cloned.

We have encountered a bug with a confused/broken receive queue, that we
think might have been caused by this problem, as the smsc95xx driver
uses cloned buffers in its receive path. Thanks to edumazet for
pointing that out and suggesting this fix.

This patch makes sure that this code path only expands socket buffers
that have not been cloned and just enqueues them normally in the other
case. In upstream kernels starting with 3.5, the affected code has been
refactored into tcp_try_coalesce with commit 1402d36, which has later
been patched to fix this issue in commit 923dd34. The fix has not been
backported into the upstream 3.4 kernel.

BUG=chromium-os:35827
TEST=None

Change-Id: I2cdf09946a3cbb0cbff35b1ac09313352b8f1e94
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37666
Reviewed-by: Eric Dumazet <edumazet@chromium.org>
Reviewed-by: Sameer Nanda <snanda@chromium.org>

CHROMIUM: Input: atmel_mxt_ts - Return early from mxt_exit_bl on error

In the case that a firmware update fails, the driver
will try to proceed to mxt_input_dev_create, which will try to
dereference the NULL object table. Bail out early so this does
not happen.

Signed-off-by: Benson Leung <bleung@chromium.org>
BUG=chrome-os-partner:10688
TEST=The following instructions will write the wrong firmware to the
touchpad device.
1. cd /sys/bus/i2c/devices/1-004b
2. echo maxtouch-ts.fw > fw_file
3. echo 1 > update_fw
4. dmesg | tail
This will result in a failed touchpad update. Check that dmesg shows:
[  158.495164] atmel_mxt_ts 1-004b: bootloader version: 32
[  170.563491] atmel_mxt_ts 1-004b: mxt_read_reg: i2c read failed
[  170.563513] atmel_mxt_ts 1-004b: Failed to initialize on exit bl. error = -6
Check that the system does not panic in this situation.

To recover from this state, simply shut the machine down completely using
sudo shutdown -P now

Change-Id: Ib773efd8b76aced9f5faab0b51745db7192e78f9
Reviewed-on: https://gerrit.chromium.org/gerrit/37860
Reviewed-by: Yufeng Shen <miletus@chromium.org>
Commit-Ready: Benson Leung <bleung@chromium.org>
Tested-by: Benson Leung <bleung@chromium.org>

CHROMIUM: mfd: chromeos_ec: update EC<->AP protocol

The ec_commands.h file has been added quite a few new commands. Bring
the new version.

Sync ec_commands.h file of commit
  3c575ccb02ff58eaae3e7c3dd8e2e86ad25ac106

BUG=none
TEST=build kernel for daisy and link

Change-Id: If17bba42df105a92aa31d6ddfedc0cdae682c279
Signed-off-by: Che-Liang Chiou <clchiou@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37677

CHROMIUM: remove implementation details from public header

chromeos_platform_read_nvram() and chromeos_platform_write_nvram() are
implementation details of chromeos_set_need_recovery() that are not used
outside drivers/platform.  So remove them from public header.

BUG=none
TEST=build kernel

Change-Id: Ie3a67dbe05b9764dc680dd1e5cf15dd91160d61a
Signed-off-by: Che-Liang Chiou <clchiou@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37685

CHROMIUM: pm-check: optimize xor and sum for A-15

This speeds up the xor and checksum functions in pm-check

before:
[  202.557153] s3c_pm_check: Suspend memory scan took 1135837 usecs
[  202.557153] s3c_pm_check: Resume memory scan took 1097304 usecs

after:
[   63.292634] s3c_pm_check: Suspend memory scan took 553787 usecs
[   63.292634] s3c_pm_check: Resume memory scan took 531468 usecs

BUG=chrome-os-partner:15655
TEST=run suspend_stress_test, ensure errors are still detected

Change-Id: Icf20432c107a25efde77271f3956e82fc8a3a7a2
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Sonny Rao <sonnyrao@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37781

CHROMIUM: Input: atmel_mxt_ts - make suspend power acquisition interval configurable

Create sysfs for T7 IDLE/ACTV-ACQINT settings to have a configurable power
acquisition setting during system suspend.

Also change the default T7 IDLE/ACTV-ACQINT values during system suspend to be
32ms to have a sensitive wakeup-from-touch response.

Signed-off-by: Yufeng Shen <miletus@chromium.org>
BUG=chrome-os-partner:15968
TEST=1. go to touch device sysfs directory
        echo 254 > power/suspend_acq_interval_ms
        Try powerd_suspend and use very quick, gentle touch to wake up the system
        and notice that sometimes the system does not wake up from touch.
     2. go to touch device sysfs directory
        echo 32 > power/suspend_acq_interval_ms
        Try powerd_suspend and use very quick, gentle touch to wake up the system
        and make sure the system always wakes up.

Change-Id: Ib7ad7a6b81699b71bcb165df06f275e55a68e7c6
Reviewed-on: https://gerrit.chromium.org/gerrit/37836
Reviewed-by: Benson Leung <bleung@chromium.org>
Commit-Ready: Yufeng Shen <miletus@chromium.org>
Tested-by: Yufeng Shen <miletus@chromium.org>

PM / Sleep: samsung: pm-check: Add ability to skip unallocated pages

Memory corruption in unallocated pages isn't harmful and we can save
time by only checking allocated pages.

BUG=None
TEST=Ran with all memory allocated in userspace.
   Saw errors on machine with bad bios.  No errors on good bios.
   Timing tests:
  - Memory fully allocated: 4.428 second suspend, 1.154 resume.
  - Chrome on login screen: 0.995 suspend, 0.319 resume
  - Chrome UI stopped: 0.591 suspend, 0.195 resume
  - pm_check_skip_unused = 0: 4.510 suspend, 1.155 resume

Change-Id: I3b996b17b3f12885f86595684e2d0e14b11adbdc
Signed-off-by: Jonathan Kliegman <kliegs@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37716
Reviewed-by: Doug Anderson <dianders@chromium.org>

samsung: snow: bitfix: Set interleaving based on corruption unit

We'd like to process all pages with the same destination one after
another.  Tell pm-check about this.

BUG=chrome-os-partner:15655
TEST=Timed before and after and saw 500-600ms speedup.
Before:
 [   24.709808] s3c_pm_check: Suspend memory scan took 3947182 usecs
 [   24.709808] s3c_pm_check: Resume memory scan took 1098695 usecs
 [   37.209790] s3c_pm_check: Suspend memory scan took 4020150 usecs
 [   37.209790] s3c_pm_check: Resume memory scan took 1099690 usecs
 [   51.569801] s3c_pm_check: Suspend memory scan took 4017198 usecs
 [   51.569801] s3c_pm_check: Resume memory scan took 1099794 usecs
After:
 [   33.923909] s3c_pm_check: Suspend memory scan took 3493848 usecs
 [   33.923909] s3c_pm_check: Resume memory scan took 1104389 usecs
 [   44.273912] s3c_pm_check: Suspend memory scan took 3444726 usecs
 [   44.273912] s3c_pm_check: Resume memory scan took 1104217 usecs
 [   57.753915] s3c_pm_check: Suspend memory scan took 3429833 usecs
 [   57.753915] s3c_pm_check: Resume memory scan took 1104522 usecs

Change-Id: Id57e5c76788ec1cfb4d09d1a99e6b2e10a56f184
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37725
Reviewed-by: Jon Kliegman <kliegs@chromium.org>

samsung: pm-check: Add interleaving support

When pm-check is used in conjunction with bitfix we can get much
faster processing times if we change the order that we process chunks.
Add support for changing the order that we process pages in save so
that bitfix can use it.

BUG=chrome-os-partner:15655
TEST=Timed before and after and saw 500-600ms speedup.  See associated
bitfix change (dd13e37d3ca428eb89ee6d9afe3b258ec4ca0bfd) for details.

Change-Id: If2b720a75f5274df0e5dc11d77662d73a4581ffb
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37690
Reviewed-by: Jon Kliegman <kliegs@chromium.org>

samsung: snow: bitfix: Use linux xor code

Linux already has some xor code that was optimized for RAID.  Include
it and use it for bitfix.  This appears to save 200-300 ms.

BUG=chrome-os-partner:15655
TEST=Timed before and after:
Before:
 [   28.344096] s3c_pm_check: Suspend memory scan took 4341511 usecs
 [   28.344096] s3c_pm_check: Resume memory scan took 1204971 usecs
 [   40.794096] s3c_pm_check: Suspend memory scan took 4372845 usecs
 [   40.794096] s3c_pm_check: Resume memory scan took 1205185 usecs
 [   53.689130] s3c_pm_check: Suspend memory scan took 4348640 usecs
 [   53.689130] s3c_pm_check: Resume memory scan took 1205305 usecs
After:
 [   34.604046] s3c_pm_check: Suspend memory scan took 4000453 usecs
 [   34.604046] s3c_pm_check: Resume memory scan took 1202673 usecs
 [   48.804021] s3c_pm_check: Suspend memory scan took 3991251 usecs
 [   48.804021] s3c_pm_check: Resume memory scan took 1202789 usecs
 [   62.234132] s3c_pm_check: Suspend memory scan took 4161455 usecs
 [   62.234132] s3c_pm_check: Resume memory scan took 1203661 usecs
 [   83.439127] s3c_pm_check: Suspend memory scan took 4002259 usecs
 [   83.439127] s3c_pm_check: Resume memory scan took 1205180 usecs

Change-Id: I17a6d6b8c072ac0fe04ae2fa8762374aafcae7ff
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37691
Reviewed-by: Jon Kliegman <kliegs@chromium.org>
Reviewed-by: Sonny Rao <sonnyrao@chromium.org>

samsung: snow: bitfix: Panic if too many bits fixed in 1 chunk

If we see too much corruption in a single chunk then that's a sign
that we're in a state that we can't recover from (either a bitfix
internal error or a corruption of some memory that can't be checked).
Panic in that case.

BUG=chrome-os-partner:15655
TEST=suspend_stress_test
TEST=In code change MAX_BYTES_TO_FIX to 3 and then re-run test.
See a reboot and see the panic in /var/spool/crash:
  <7>[  163.818802] s3c_pm_check: Restore CRC error at 71734000 (6da6143e vs 1d894763)
  <6>[  163.818802] bitfix_recover_chunk: Attempting recovery at 71734000
  <6>[  163.818802] ...fixed 0x71735644 from 0xbadc0de1 to 0x00000000 (4 bytes)
  <5>[  163.818802] ------------[ cut here ]------------
  <2>[  163.818802] kernel BUG at .../arch/arm/mach-exynos/bitfix-snow.c:504!
  <0>[  163.818802] Internal error: Oops - BUG: 0 [#1] SMP ARM
  <5>[  163.818802] Modules linked in: i2c_dev uinput isl29018(C) industrialio(C) sbs_battery rfcomm btmrvl_sdio btmrvl bluetooth fuse nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter xt_mark ip6_tables mwifiex_sdio mwifiex cfg80211 spidev uvcvideo videobuf2_vmalloc asix smsc95xx usbnet joydev
  <5>[  163.818802] CPU: 0    Tainted: G         C    (3.4.0 #4)
  <5>[  163.818802] PC is at bitfix_recover_chunk+0x220/0x244
  <5>[  163.818802] LR is at bitfix_recover_chunk+0x20c/0x244
  ...
  <5>[  163.818802] [<80024f5c>] (bitfix_recover_chunk+0x220/0x244) from [<8002786c>] (s3c_pm_runcheck+0x158/0x2a0)
  ...

Change-Id: Iaad53d821231f419cb1e44a9e1ef3c8ec36973d2
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37600
Reviewed-by: Jon Kliegman <kliegs@chromium.org>

samsung: pm-check: Speed up memory exclusion check

Changed the memory exclusion change to assume that we're working
on one page at a time.  This is mostly useful in bitfix which
can do a simple calculation instead of a loop.

BUG=chrome-os-partner:15655
TEST=Timed before and after:
Before:
 [   65.769646] s3c_pm_check: Suspend memory scan took 4304997 usecs
 [   65.769646] s3c_pm_check: Resume memory scan took 1176677 usecs
 [   80.684717] s3c_pm_check: Suspend memory scan took 4319001 usecs
 [   80.684717] s3c_pm_check: Resume memory scan took 1172676 usecs
 [  101.599638] s3c_pm_check: Suspend memory scan took 4331624 usecs
 [  101.599638] s3c_pm_check: Resume memory scan took 1173586 usecs

With samsung: pm-check: Change exclusions to be per page:
 [   83.759770] s3c_pm_check: Suspend memory scan took 4695243 usecs
 [   83.759770] s3c_pm_check: Resume memory scan took 1271669 usecs
 [   99.309735] s3c_pm_check: Suspend memory scan took 4695435 usecs
 [   99.309735] s3c_pm_check: Resume memory scan took 1270742 usecs
 [  115.154743] s3c_pm_check: Suspend memory scan took 4600779 usecs
 [  115.154743] s3c_pm_check: Resume memory scan took 1270537 usecs

With samsung: pm-check: Speed up memory exclusion check:
 [   28.344096] s3c_pm_check: Suspend memory scan took 4341511 usecs
 [   28.344096] s3c_pm_check: Resume memory scan took 1204971 usecs
 [   40.794096] s3c_pm_check: Suspend memory scan took 4372845 usecs
 [   40.794096] s3c_pm_check: Resume memory scan took 1205185 usecs
 [   53.689130] s3c_pm_check: Suspend memory scan took 4348640 usecs
 [   53.689130] s3c_pm_check: Resume memory scan took 1205305 usecs
TEST=suspend_stress_test

Change-Id: I71b6f84e12af6d2aa28373262650e8fa25abb1ea
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37679
Reviewed-by: Jon Kliegman <kliegs@chromium.org>

samsung: snow: bitfix: Fix missing kunmap_atomic() when bitfixing

A recent change ("samsung: pm-check: Change exclusions to be per
page") introduced a bug where pages wouldn't get unmapped after
bitfix.  Fix the bug.

BUG=chrome-os-partner:15655
TEST=suspend_stress_test

Change-Id: I25d86c5b583309e8ff1115daca436cc625fee9c7
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37754
Reviewed-by: Michael Spang <spang@chromium.org>

arm: xor: Add prefetch options

On my current system these options aren't faster than the assembly but
it doesn't hurt to try them.  This also avoids a warning about unused
statics.

BUG=None
TEST=No more warning.  'dmesg | grep xor' at bootup still shows
we're using the arm4regs function.

Change-Id: I4d566a79efb7bc7dbbbd7d766681b089ffe07326
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37687
Reviewed-by: Sonny Rao <sonnyrao@chromium.org>

CHROMIUM: MALI: added stack traces for gpu faults

Add stack traces for gpu faults.  This is temporary for helping with
problems in the field.

Signed-off-by: Gabriele Paoloni <gabriele.paoloni@arm.com>
BUG=chrome-os-partner:1556
TEST=build and boot

Change-Id: Id79c6e4d339ae362df9497beb936ebdfd45931ea
Reviewed-on: https://gerrit.chromium.org/gerrit/37349
Commit-Ready: Sam Leffler <sleffler@chromium.org>
Tested-by: Sam Leffler <sleffler@chromium.org>
Reviewed-by: Anush Elangovan <anush@chromium.org>

PM / Sleep: exynos: mct: Mark hi2 local static suspend_volatile_bss

If ktime_get is called, the local static hi2 gets updated when clock->read()
is called.  As this is called when testing timings in pm-check, make sure to mark it
is marked as suspend_volatile_bss.

BUG=None
TEST=With timings on and bitfix enabled, saw hi2's address being fixed.
  After patch saw it no longer being affected.
Signed-off-by: Jonathan Kliegman <kliegs@chromium.org>
Change-Id: I060dbd6a46085def936a14b6dfbb051570c40a85
Reviewed-on: https://gerrit.chromium.org/gerrit/37711
Tested-by: Jon Kliegman <kliegs@chromium.org>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Commit-Ready: Jon Kliegman <kliegs@chromium.org>

PM / Sleep: suspend_volatile: Remove spinlock in overlap check

pm_does_overlap_suspend_volatile is only called when scheduling disabled
and can not be interrupted.  It is also called frequently.  Remove the
spinlock acquistion to speedup suspend/resume times.

BUG=None
TEST=Compared timings before and after.
  Ensured no warnings in log.
  Did cycle of 200 suspend/resumes on fixed bios successfully.
  Still caught errors on bad bios correctly.

Change-Id: Ifce238e223e25121b48c880407f712305cdde825
Signed-off-by: Jonathan Kliegman <kliegs@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37708
Reviewed-by: Doug Anderson <dianders@chromium.org>

samsung: pm-check: Change exclusions to be per page

Increase granularity to page-level exclusions.  This helps
set the way for doing smarter exclusions based on if a page
is allocated or not.

BUG=None
TEST=Run on machines with and without bad memory
  Confirm 500 runs on good machine with no false positives
  Confirm bitfix and pm_check properly detect and correct errors

Change-Id: Ibeab83dbc822637dc0b4857bb9883acc5b6ab7c5
Signed-off-by: Jonathan Kliegman <kliegs@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37646
Reviewed-by: Doug Anderson <dianders@chromium.org>

CHROMIUM: ath9k: dump_eep_power in debugfs only with eep_ops support

The ath9k driver is adding a dump_eep_power debugfs file
even when there is no corresponding eep_ops support for
dump_eep_power.

Accessing dump_eep_power on platforms without support for
dump_eep_power leads to kernel crashes, so do not add the
debugfs entry for those platforms.

Signed-off-by: Jason Abele <jabele@chromium.org>
BUG=None
TEST=Do the following:
ls /sys/kernel/debug/ieee80211/phy0/ath9k/
make sure dump_eep_power does not exist on mario
Change-Id: I10cc18c4322481efc49cea7d608852b60cdcf904
Reviewed-on: https://gerrit.chromium.org/gerrit/37726
Reviewed-by: Sam Leffler <sleffler@chromium.org>
Commit-Ready: Jason Abele <jabele@chromium.org>
Tested-by: Jason Abele <jabele@chromium.org>

CHROMIUM: md: bootcache if init fails, mark invalid

On any failure that doesn't fully initialize the bootcache,
it should set mark the cache as invalid so the bootcache
utility can rebuild the bootcache.

BUG=chromium-os:35378
TEST=ran bootcachetest on stumpy, arm

Change-Id: I3331ba0bc505445310c52a7c73a334106fd7141b
Signed-off-by: Paul Taysom <taysom@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/35837
Reviewed-by: Mandeep Singh Baines <msb@chromium.org>

CHROMIUM: md: bootcache don't delete sys files

Because the device mapper already deletes any sys files
created by dm-bootcache, it shouldn't delete them
when cleaning up.

BUG=chromium-os:35377
TEST=ran bootcachetest on stumpy, arm

Change-Id: I73d40a6de17b15827da2dd421a29294e286ebc1a
Signed-off-by: Paul Taysom <taysom@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/35836
Reviewed-by: Mandeep Singh Baines <msb@chromium.org>

CHROMIUM: md: bootcache check metadata and data lengths

bootcache now verifies that the lengths for metadata and data
make sense and fit with in the partition.

BUG=chromium-os:35379
TEST=ran bootcachetest on stumpy, arm

Change-Id: I6beee3a5b1aa723aaf08c673a004bc4924afc42d
Signed-off-by: Paul Taysom <taysom@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/35578
Reviewed-by: Mandeep Singh Baines <msb@chromium.org>

CHROMIUM: mm: Fix calculation of dirtyable memory

The system uses global_dirtyable_memory() to calculate
number of dirtyable pages/pages that can be allocated
to the page cache.  A bug causes an underflow thus making
the page count look like a big unsigned number.  This in turn
confuses the dirty writeback throttling to aggressively write
back pages as they become dirty (usually 1 page at a time).

Fix is to ensure there is no underflow while doing the math.

Signed-off-by: Sonny Rao <sonnyrao@chromium.org>
Signed-off-by: Puneet Kumar <puneetster@chromium.org>
BUG=chrome-os-partner:16011
TEST=Manual; boot kernel, powerwash, login with testaccount and
make sure no jank occurs on sync of applications

Change-Id: I614e7c3156e014f0f28a4ef9bdd8cb8a2cd07b2a
Reviewed-on: https://gerrit.chromium.org/gerrit/37612
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Olof Johansson <olofj@chromium.org>
Commit-Ready: Puneet Kumar <puneetster@chromium.org>
Reviewed-by: Puneet Kumar <puneetster@chromium.org>
Tested-by: Puneet Kumar <puneetster@chromium.org>

samsung: pm-check: Make checksum algorithm more configurable and add sum

There are good reasons for using different checksums in pm-check.  Add
'sum' and generalize mechanism for switching checksum algorithms.

The 'sum' algorithm is now the default.

BUG=chrome-os-partner:15655
TEST=Put code in to do a bogus corruption of address
0x71735644 to 0xBADC0DE1.  Then:
1. Do a suspend/resume and see sum algorithm (0xffffffff + 0xbadc0de1):
    s3c_pm_check: Restore CRC error at 71734000 (badc0de0 vs ffffffff)
    bitfix_recover_chunk: Attempting recovery at 71734000
    ...fixed 0x71735644 from 0xbadc0de1 to 0x00000000
2. Switch to xor:
    echo -n xor > /sys/module/pm_check/parameters/pm_check_checksum_type
3. Do suspend/resume again and see xor algorithm (0xffffffff ^ 0xbadc0de1)
    s3c_pm_check: Restore CRC error at 71734000 (4523f21e vs ffffffff)
    bitfix_recover_chunk: Attempting recovery at 71734000
    ...fixed 0x71735644 from 0xbadc0de1 to 0x00000000
4. Switch to CRC:
    echo -n crc > /sys/module/pm_check/parameters/pm_check_checksum_type
5. Do suspend/resume again and see crc algorithm
    s3c_pm_check: Restore CRC error at 71734000 (57243536 vs 270b666b)
    bitfix_recover_chunk: Attempting recovery at 71734000
    ...fixed 0x71735644 from 0xbadc0de1 to 0x00000000
TEST=Time by doing this for sum:
    echo Y > /sys/module/pm_check/parameters/pm_check_print_timings
    suspend_stress_test --noerrors_fatal --backup_rtc \
        --suspend_min 15 --suspend_max 15 -c2
    dmesg | grep 'memory scan'
...and saw this, which is same as xor:
    s3c_pm_check: Suspend memory scan took 4519985 usecs
    s3c_pm_check: Resume memory scan took 1181126 usecs
    s3c_pm_check: Suspend memory scan took 4596896 usecs
    s3c_pm_check: Resume memory scan took 1184638 usecs
...note that the above includes bitfix, which is why suspend is 4.5
seconds.

Change-Id: Ifd20c5d3f6da5069634360057120b63e232f8a77
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37592
Reviewed-by: Jon Kliegman <kliegs@chromium.org>

CHROMIUM: config: exynos5: Turn on bitfix

Enable bitfix code.  This code is safe to enable always--it will
autodetect when it's needed.

BUG=chrome-os-partner:15655
TEST=suspend_stress_test

Change-Id: I9fc03f05c1e894dcf196e2e2a256ae87f8dc4384
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37066
Reviewed-by: Jon Kliegman <kliegs@chromium.org>

samsung: snow: bitfix: Recover from bit errors across sleep/wake

Some Snow boards have an issue in read-only firmware that can cause
bit errors across a suspend/resume cycle.  Given the pattern of the
corruption we can actually recover from nearly all bit errors given a
little bit of perparation time.

A full description of the problem and solution can be found in
bitfix-snow.c.

This change recovers from most cases of corruption but can still
be made more robust and optimized.

At the moment this code appears to add about 3.5 seconds to
suspend time and ~nothing to resume time.  That's on top of the
~1 second for pm-check.

BUG=chrome-os-partner:15655
TEST=Run the following script:
  cd /var/log
  touch sst.txt
  echo '------------' >> sst.txt
  date >> sst.txt
  while true; do
    suspend_stress_test --noerrors_fatal --backup_rtc \
      --suspend_min 15 --suspend_max 15 | tee -a sst.txt
    dmesg | \
      grep "\(CRC error\|bitfix\|...fixed\|[rR]ecover\)" \
      >> sst.txt
    dmesg -C
  done
See messages like:
  [  229.959279] s3c_pm_check: Restore CRC error at 86856000 (6a5fe07c vs 6acbe07c)
  [  229.959279] bitfix_recover_chunk: Attempting recovery at 86856000
  [  229.959279] ...fixed 0x86857140 from 0x76b47894 to 0x76b07894
  [  229.959279] ...fixed 0x8685751c from 0x00100051 to 0x00000051
  [  229.959279] ...fixed 0x86857d54 from 0x77773604 to 0x77f73604
  [  229.959279] s3c_pm_check: Recovered
  [  229.959279] s3c_pm_check: Restore CRC error at 86858000 (4e502299 vs 4e5b2299)
  [  229.959279] bitfix_recover_chunk: Attempting recovery at 86858000
  [  229.959279] ...fixed 0x86858358 from 0x76f8a3d8 to 0x76f9a3d8
  [  229.959279] ...fixed 0x86858f2c from 0x00080002 to 0x00000002
  [  229.959279] ...fixed 0x86859b64 from 0x00021a66 to 0x00001a66
  [  229.959279] s3c_pm_check: Recovered
TEST=Run bitfix-test.sh from I26b3938fe5c481968dc019f188f46d211dd6a801
TEST=Time by doing:
  echo Y > /sys/module/pm_check/parameters/pm_check_print_timings
  suspend_stress_test --noerrors_fatal --backup_rtc \
      --suspend_min 15 --suspend_max 15 -c3
  dmesg | grep 'memory scan'
See:
  [ 1433.174264] s3c_pm_check: Suspend memory scan took 4434401 usecs
  [ 1433.174264] s3c_pm_check: Resume memory scan took 1122626 usecs
  [ 1445.639303] s3c_pm_check: Suspend memory scan took 4460913 usecs
  [ 1445.639303] s3c_pm_check: Resume memory scan took 1122503 usecs
  [ 1458.219387] s3c_pm_check: Suspend memory scan took 4455245 usecs
  [ 1458.219387] s3c_pm_check: Resume memory scan took 1122534 usecs
TEST=Boot with old bios and see bitfix get enabled by doing:
  dmesg | grep bitfix_reserve
...and see:
  [    0.000000] bitfix_reserve: Detected firmware that needs bitfix
TEST=Run with legacy BIOS (doesn't set RO string) and enable manually
  echo 'Y' > /sys/module/bitfix_snow/parameters/bitfix_enabled
  echo 'Y' > /sys/module/pm_check/parameters/pm_check_enabled
...see bits get fixed using tests above.

Change-Id: I9c7ac2f85b8d9398c93f486f9401daee1526f571
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/36905
Reviewed-by: Sam Leffler <sleffler@chromium.org>
Reviewed-by: Jon Kliegman <kliegs@chromium.org>

PM / Sleep: Mark oops_id as suspend_volatile

Without this if we have a WARN_ON hit in suspend/resume code we'll
detect this as a CRC error.

BUG=chrome-os-partner:15655
TEST=Try to measure timings (which prints out a warning).
  echo Y > /sys/module/pm_check/parameters/pm_check_print_timings
  suspend_stress_test --noerrors_fatal --backup_rtc \
      --suspend_min 15 --suspend_max 15 -c1
Before this CL you'll see a CRC error:
  s3c_pm_check: Restore CRC error at 407bc000 (08e3f07b vs 08e3f079)
  bitfix_recover_chunk: Attempting recovery at 407bc000
  ...fixed 0x407bdeb0 from 0x76d4a47b to 0x76d4a479
After this CL there will be no CRC error.

Change-Id: I276bd69156bea6bd5b4c32274898e7c4ded03eb5
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37591
Reviewed-by: Jon Kliegman <kliegs@chromium.org>

CHROMIUM: drm/i915: Workaround disappearing AVI Infoframe on resume

The AVI Infoframe disappears on SNB after suspend/resume. This patch
works around what seems to be a hardware issue by doing a dummy register
write on DPMS calls.

BUG=chrome-os-partner:16054
TEST=with the HDMI analyzer: suspend/resume parrot, verify that
TEST=the AVI infoframe is still here

Change-Id: I7cb880408db3cd279d09cb7a53f6787c14e03027
Reviewed-on: https://gerrit.chromium.org/gerrit/37596
Tested-by: Stéphane Marchesin <marcheu@chromium.org>
Reviewed-by: Stuart Abercrombie <sabercrombie@chromium.org>
Commit-Ready: Stéphane Marchesin <marcheu@chromium.org>

CHROMIUM: Input: cyapa - Send uevent when device detection fails

Fire an uevent when device detection fails so that userspace can
take some actions (e.g. gathering relevant logs).

Signed-off-by: Yufeng Shen <miletus@chromium.org>
BUG=chromium-os:35169
TEST=No consistent way to repro the device detection failure. So
     no test for now.

Change-Id: Ie2951f6dc69d6afaf9b3e37b97d7383f0eb53df8
Reviewed-on: https://gerrit.chromium.org/gerrit/37147
Reviewed-by: Benson Leung <bleung@chromium.org>
Commit-Ready: Yufeng Shen <miletus@chromium.org>
Tested-by: Yufeng Shen <miletus@chromium.org>

CHROMIUM: Input: psmouse - retry getid command in psmouse_probe()

As the synaptics device may not respond to the first command in psmouse_probe
when a machine is booting up, the patch gives a second probe if the first
one fails.

Signed-off-by: Chung-yih Wang <cywang@chromium.org>
BUG=chrome-os-partner:14638
TEST=on device; do the following steps:

1. make sure there is no other USB devices plugged into the machine.
2. mount -o rw,remount /
3. create a script file test-synaptics-present.conf under /etc/init with following.

cat > /etc/init/test-synaptics-present.conf <<EOF
start on starting system-services
script
  DEV=/sys/devices/platform/i8042/serio4/serio5/input/input9
  sleep 15
  if [ -e \$DEV ]; then
    logger 'Synaptics Trackpad found at \$DEV'
    shutdown -r now
  else
    logger 'Synaptics Trackpad NOT found at \$DEV'
  fi
end script

4. reboot, then the machine should keep rebooting every 15+ seconds.

Change-Id: Ieb81acf75bb79ac9f34f9b01fbe3d8f4b6a367b2
Reviewed-on: https://gerrit.chromium.org/gerrit/34405
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Commit-Ready: Chung-yih Wang <cywang@chromium.org>
Tested-by: Chung-yih Wang <cywang@chromium.org>

PM / Sleep: arm: mmu: Mark fixed ptes as volatile during suspend

Make the page table entries used by kmap_atomic as volatile so we ignore
changes made to them during the memory checksum operations on suspend/resume.

BUG=chrome-os-partner:15914
TEST=Saw location 0xaf7fe400 generate false CRC errors before patch
  After patch changes to that page are ignored.
  Confirmed with additional debug printing that the supression is added

Change-Id: I6766099aa0e86c479b26ee18d69b537493e84dfc
Signed-off-by: Jonathan Kliegman <kliegs@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37463
Reviewed-by: Michael Spang <spang@chromium.org>
Reviewed-by: Doug Anderson <dianders@chromium.org>

samsung: pm-check: Cleanup chunk exclude code to use suspend_volatile

Recent changes mark memory that may change across suspend/resume
as suspend_volatile.  We can now use this in pm-check, so do so.
That means we can remove some extra globals from printk.c.

This change also cleans up handling of sleep_save_sp:
* Don't exclude *sleep_save_sp.  That was a physical address and is
  also already handled by current_thread_info().
* Don't exclude sleep_save_sp.  Instead: we zero it out before out
  code runs.  This is a transitory value and zeroing it is fine.  Now
  we won't exclude chunks of memory stored near sleep_save_sp.

...and a few other minor fixes:
* Skips regions in s3c_pm_makecheck() too.
* Avoids goto in s3c_pm_runcheck() loop.

BUG=chrome-os-partner:15914
TEST=suspend_stress_test

Change-Id: I5eadc7631c3f31f91138170c5e37430da7e3520b
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37359
Reviewed-by: Jon Kliegman <kliegs@chromium.org>

CHROMIUM: tpm: always run ContinueSelftest at resume

In a previous patch we moved ContinueSelfTest out of the resume path
to speed it up, and we skip the command if enough time has passed
between the resume and the first following TPM command, on the
assumption that the TPM starts and runs the self test to completion
at resume time.  (This applies only to TPMs that are powered off
between suspend and resume.)

The ST Micro TPM behaves differently and needs ContinueSelfTest
to be called at resume, before the next TPM command can be
successfully executed.  We could make the behavior of the
resume callback depend on the TPM model.  However, ContinueSelftest
completes quickly on all TPM models currently used in Chromebooks,
and it's not on any critical path.  So we prefer to make the
code simpler for everybody.

BUG=chrome-os-partner:15694
TEST=tested manually

Change-Id: I62e12db3506947e757ea251a9f8915ffae6ac106
Signed-off-by: Luigi Semenzato <semenzato@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37468
Reviewed-by: Darren Krahn <dkrahn@chromium.org>
Tested-by: Darren Krahn <dkrahn@chromium.org>
Reviewed-by: Mandeep Singh Baines <msb@chromium.org>

PM / Sleep: ramoops: Mark ramoops buffer as suspend volatile

If we don't have no_console_suspend and we have PSTORE_CONSOLE
defined then we might end up writing to the ramoops buffer during
suspend/resume.  Mark that memory as suspend volatile.

BUG=chrome-os-partner:15914
TEST=suspend_stress_test

Change-Id: I8e64c68938c3151ac4e96ed69d45c1ec40799134
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37387
Reviewed-by: Jon Kliegman <kliegs@chromium.org>
Reviewed-by: Michael Spang <spang@chromium.org>

PM / Sleep: printk: Mark some printk globals as suspend volatile

This tags global variables in printk that are known to be touched
during suspend/resume.

BUG=chrome-os-partner:15914
TEST=suspend_stress_test

Change-Id: I393536bb4fb1b985b43fa1a3bec253ca81cb99b0
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37386
Reviewed-by: Jon Kliegman <kliegs@chromium.org>
Reviewed-by: Michael Spang <spang@chromium.org>

PM / Sleep: Add the concept of suspend_volatile

In order to catch suspend/resume problems we would like to run a CRC
over most of memory before and after sleep and compare the results.
To do this we need to know which memory regions the suspend/resume
code touches and avoid running the CRC over those regions.

We will consider those regions to be "suspend volatile".  The CRC code
will skip chunks of memory tagged as suspend volatile to avoid falsely
reporting CRC errors.

We add the ability to mark global variables as suspend volatile
(keeping them in a special section) and also the ability to register
dynamic chunks of memory as volatile.

BUG=chrome-os-partner:15914
TEST=suspend_stress_test

Change-Id: I7964f5886d6b62fbca8d82986db20eae83ad0918
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37385
Reviewed-by: Michael Spang <spang@chromium.org>
Reviewed-by: Jon Kliegman <kliegs@chromium.org>

addr_overlap: Add functions for checking address range overlap

These functions are simple but nice to have in one place.  Code
is based on in_region() from arch/arm/plat-samsung/pm-check.c.
There is similar code in memblock in memblock_addrs_overlap().

BUG=chrome-os-partner:15914
TEST=Use in future CLs.

Change-Id: I4faec4fb977215e0858bec8f0c0b988edb619457
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37467
Reviewed-by: Jon Kliegman <kliegs@chromium.org>
Reviewed-by: Michael Spang <spang@chromium.org>

CHROMIUM: r8169.c: Fix WOL setting after resume from S3.

After resume from S3, register Config3 comes up as 0x60 (enable WOL),
regardless of previous state. Fix is to save previous state of Config3
and related WOL register bits and restore them upon resume.

BUG=chrome-os-partner:12129
TEST="ethtool eth0" after S3 resume and check that WOL is disabled. Also
verify that network card still functions as normal after resume.

Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Change-Id: I2495b71029ccc30f406aea60cfd843b3cc6c711e
Reviewed-on: https://gerrit.chromium.org/gerrit/37143
Commit-Ready: Shawn Nematbakhsh <shawnn@google.com>
Reviewed-by: Shawn Nematbakhsh <shawnn@google.com>
Tested-by: Shawn Nematbakhsh <shawnn@google.com>

CHROMIUM: Input: cyapa - Remove capability array

It's not actually used for anything. It's just making our cyapa
structure 14 bytes larger.

Signed-off-by: Benson Leung <bleung@chromium.org>
BUG=chromium-os:21047
TEST=builds clean

Change-Id: I676fb04ce49172fba5a751a24219bd7c3f451d17
Reviewed-on: https://gerrit.chromium.org/gerrit/36410
Tested-by: Benson Leung <bleung@chromium.org>
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Commit-Ready: Benson Leung <bleung@chromium.org>

CHROMIUM: Input: cyapa - Set IRQF_ONESHOT for threaded irq

Starting with commit 1c6c69525b ("genirq: Reject bogus threaded irq requests")
threaded IRQs without a primary handler need to be requested with
IRQF_ONESHOT to make sure the irq isn't unmasked before the thread
is finished.

Signed-off-by: Benson Leung <bleung@chromium.org>
BUG=chromium-os:36125,chromium-os:21047
TEST=verify that the trackpad works, generates events when you move
a finger over it (ie, interrupts are working).

Change-Id: I2ff6294a09509da548624ca1229c5206c758cb7a
Reviewed-on: https://gerrit.chromium.org/gerrit/37493
Tested-by: Benson Leung <bleung@chromium.org>
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Commit-Ready: Benson Leung <bleung@chromium.org>

CHROMIUM: Input: cyapa - Clean up button capabilities

We don't need three boolean variables representing left, middle, right.
Lets just save to u8 btn_capability, and mask for the relevant bits
when we need to report left, middle, or right.

Signed-off-by: Benson Leung <bleung@chromium.org>
BUG=chromium-os:21047
TEST=builds clean
Test on butterfly system. Using a test image.
1. run evtest, select Cypress APA Trackpad (cyapa)
2. left click
3. Verify left click generates BTN_LEFT event
4. right click
5. Verify right click generates BTN_RIGHT event

Change-Id: I8814a63a2b45b9edd54a97a2677e7837d3b312d9
Reviewed-on: https://gerrit.chromium.org/gerrit/36450
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Commit-Ready: Benson Leung <bleung@chromium.org>
Tested-by: Benson Leung <bleung@chromium.org>

BACKPORT: r8169: enable internal ASPM and clock request settings

The following chips need to enable internal settings to let ASPM
and clock request work.

RTL8111E-VL, RTL8111F, RTL8411, RTL8111G
RTL8105, RTL8402, RTL8106

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit d64ec841517a25f6d468bde9f67e5b4cffdc67c7)

Resolve conflicts as follows:

In the original CL, changes are made to many chip-specific configuration
functions, such as rtl_hw_start_8168e_2, rtl_hw_start_8402, etc. Our
source is missing some of these configuration functions and others do
not integrate cleanly. Therefore, only apply the changes to the hw_start
functions that integrate cleanly:

rtl_hw_start_8168e_2
rtl_hw_start_8105e_1

TEST=Confirm basic functionality on 8168e and 8105e cards.
BUG=chrome-os-partner:15923

Change-Id: Ib790aeb102920e127c43f74a9643e89afdffc251
Reviewed-on: https://gerrit.chromium.org/gerrit/37418
Reviewed-by: Sameer Nanda <snanda@chromium.org>
Commit-Ready: Shawn Nematbakhsh <shawnn@google.com>
Tested-by: Shawn Nematbakhsh <shawnn@google.com>

UPSTREAM: mwifiex: process RX packets in SDIO IRQ thread directly

ksdioirqd has higher priority than kworker. Process RX packets
in SDIO IRQ thread (ksdioirqd/mmcX) directly instead of deferring
the work to kworker to avoid the extra latency.
This improves TCP throughput 15~20% on an ARM platform with SDIO
2.0 controller.

BUG=chrome-os-partner:15867
TEST=TCP throughput improvements (TX 17%, RX 18%) are measured in
shieldroom with '*_CPU_GOVERNOR' set to 'performance' in
/etc/laptop-mode/conf.d/cpufreq.conf

Change-Id: I2de0020540d4b24e3084be21efa880daf186d43a
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Reviewed-on: https://gerrit.chromium.org/gerrit/37182
Reviewed-by: mukesh agrawal <quiche@chromium.org>
Reviewed-by: Sam Leffler <sleffler@chromium.org>

CHROMIUM: ramoops: Avoid calling time functions when timekeeping disabled

Calling the time functions when timekeeping is disabled will cause a
WARN_ON() to happen.  This appears to deadlock things.  Better to just
not call the function when we shouldn't.

BUG=chrome-os-partner:15655
TEST=suspend_stress_test
...ran with no serial console (AKA "console=" on kernel cmdline).

Change-Id: I1fa3430ea279c4bc79c3fb5e82228b380fecb60a
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37364
Reviewed-by: Sameer Nanda <snanda@chromium.org>
Reviewed-by: Jon Kliegman <kliegs@chromium.org>
Reviewed-by: Kees Cook <keescook@chromium.org>

BACKPORT: module: add flags arg to sys_finit_module()

Thanks to Michael Kerrisk for keeping us honest.  These flags are actually
useful for eliminating the only case where kmod has to mangle a module's
internals: for overriding module versioning.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
Acked-by: Kees Cook <keescook@chromium.org>
(backported from Rusty's modules-next tree)

BUG=None, keeping us in sync with upstream for this API
TEST=daisy build, manual testing
CQ-DEPEND=I5b5a9bee3f9e73eb076f01e8aacee51eff095c56

Change-Id: I40f0b55ff903dda411a04b088f4ca5b6ab5cf05e
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37278
Reviewed-by: Mandeep Singh Baines <msb@chromium.org>

UPSTREAM: r8169: 8168c and later require bit 0x20 to be set in Config2 for PME signaling.

The new 84xx stopped flying below the radars.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Hayes Wang <hayeswang@realtek.com>
(cherry picked from commit d387b427c973974dd619a33549c070ac5d0e089f)

Signed-off-by: Shawn Nematbakhsh <shawnn@google.com>
BUG=chrome-os-partner:14994
TEST=suspend/resume, then check ethernet function on 8168c

Change-Id: I978ff6a80e8575848094ffd85a8aab5cd80ec97a
Reviewed-on: https://gerrit.chromium.org/gerrit/37328
Tested-by: Shawn Nematbakhsh <shawnn@google.com>
Reviewed-by: Todd Broch <tbroch@chromium.org>
Commit-Ready: Shawn Nematbakhsh <shawnn@google.com>

UPSTREAM: r8169: Config1 is read-only on 8168c and later.

Suggested by Hayes.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Hayes Wang <hayeswang@realtek.com>
(cherry picked from commit 851e60221926a53344b4227879858bef841b0477)

Signed-off-by: Shawn Nematbakhsh <shawnn@google.com>
BUG=chrome-os-partner:14994
TEST=suspend/resume, then check ethernet function on 8168c

Change-Id: If48adfd0f35b7727fd0d76764c53291a197963f2
Reviewed-on: https://gerrit.chromium.org/gerrit/37327
Tested-by: Shawn Nematbakhsh <shawnn@google.com>
Reviewed-by: Todd Broch <tbroch@chromium.org>
Commit-Ready: Shawn Nematbakhsh <shawnn@google.com>

Revert "samsung: pm-check: Cleanup chunk exclude code"

This reverts commit a16583b2a0799fffc4f3df22a15a282f851e3735.

BUG=chrome-os-partner:15906
TEST=Run powerd_suspend, should suspend and resume successfully

Change-Id: I5ce64a89a045e1576c45249af2c95ff0cfea06fa
Signed-off-by: Simon Que <sque@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37312
Reviewed-by: Doug Anderson <dianders@chromium.org>

HID: multitouch: Add 6673 PID for Ideacom

BUG=None
TEST=Boot kernel on machine with ideacom 6673 controller attached.
Verify usbhid module is loaded for the USB device.

Change-Id: I856f2386b889fb88dcd12300080d28626d0ab528
Signed-off-by: Dave Parker <dparker@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37281
Reviewed-by: Bernie Thompson <bhthompson@chromium.org>

CHROMIUM: ARM: MALI: correct hw counter support locking

Fix locking in the hw counter support.  We cannot use a spinlock
to synchronize the collection work against start/stop because
kbase_instr_hwcnt_dump can block; switch to a mutex.  While here also
synchronize start work which can race in multiple ways with the other
uses of mali_hwcs.  Extend coverage of the mutex in the collection thread
for readability though it's not really needed as the event dispatch work
references only static data which is unaffected by polling being stopped.

While here unique-ify error returns.

Signed-off-by: sleffler@chromium.org
BUG=chrome-os-partner:14556
TEST=verify there are no longer console msgs of the form "BUG: spinlock wrong CPU"; also run concurrent start/stop loops from the shell

Change-Id: Ib74fc5c199212441e0e0ea312f7ca57da7c35278
Reviewed-on: https://gerrit.chromium.org/gerrit/36969
Reviewed-by: Sonny Rao <sonnyrao@chromium.org>
Reviewed-by: Michael Spang <spang@chromium.org>
Tested-by: Sam Leffler <sleffler@chromium.org>
Commit-Ready: Sam Leffler <sleffler@chromium.org>

mwifiex: add multi-queue support

This patch adds support for multiple TX queues inside mwifiex
driver. Four different queues according to WMM access categories
are defined for each virtual interface. When a packet is
received from netdev for transmission, tx pending count for
particular queue is incremented and if tx pending count has
reached upper water-mark, this queue is stopped instead of
stopping all queues. Similarly when a packet is successfully
transmitted from device, tx pending count is decremented per
queue and if pending count falls below lower water-mark, queue
operations are again resumed. This ensures that not all
tranmission is blocked if traffic with particular TOS value
suddenly increases.

Also wake all queues when association/IBSS_join happens to
enable traffic on all queues.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
BUG=chrome-os-partner:15536
TEST=pass pre-WiFi Cert. test case 5.2.30

Change-Id: I7b11c6f3f90943f09deaa7ef37b2975982bc02d3
Reviewed-on: https://gerrit.chromium.org/gerrit/36286
Reviewed-by: Paul Stewart <pstew@chromium.org>
Commit-Ready: Bing Zhao <bzhao@marvell.com>
Tested-by: Bing Zhao <bzhao@marvell.com>

CHROMIUM: drm/i915: Add backlight support for Link

This adds device-specific backlight support for Link, and also
enables adaptive backlight by default there.

BUG=chrome-os-partner:13276,chrome-os-partner:15248
TEST=by hand

Change-Id: I9ef546bba9f121657a653aa9cfc6a80bbde55cb0
Reviewed-on: https://gerrit.chromium.org/gerrit/36976
Reviewed-by: Daniel Erat <derat@chromium.org>
Commit-Ready: Stéphane Marchesin <marcheu@chromium.org>
Tested-by: Stéphane Marchesin <marcheu@chromium.org>

CHROMIUM: drm/i915: Remove adaptive backlight from gen6/lvds.

We'll only enable it through the adaptive_backlight device on
Link/gen7/eDP, so prune everything else.

BUG=chrome-os-partner:13276,chrome-os-partner:15248
TEST=by hand

Change-Id: Ib5633a370e736d9afbee441d968f718be814d081
Reviewed-on: https://gerrit.chromium.org/gerrit/36975
Reviewed-by: Daniel Erat <derat@chromium.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Commit-Ready: Stéphane Marchesin <marcheu@chromium.org>
Tested-by: Stéphane Marchesin <marcheu@chromium.org>

CHROMIUM: drm/i915: Move the backlight accessor functions in dev_priv

This abstracts those functions, so that we can plug-in
platform-specific alternatives.

BUG=chrome-os-partner:3276,chrome-os-partner:15248
TEST=by hand: compiles, works

Change-Id: I29dd15722ffed8f5813b34bf0ce4431ce0524cc2
Reviewed-on: https://gerrit.chromium.org/gerrit/36974
Reviewed-by: Daniel Erat <derat@chromium.org>
Commit-Ready: Stéphane Marchesin <marcheu@chromium.org>
Tested-by: Stéphane Marchesin <marcheu@chromium.org>

CHROMIUM: gobi: Keep struct qcusbnet alive while cdev is alive

This fixes an issue where struct qcusbnet is freed while the embedded
character device is still alive.

This uses the ability of cdev to pin an arbitrary kobject by setting
cdev.kobj.parent. We have to switch from kref to kobject to use that.
This is arguably misuse of kobject, but char_dev requires it.t t

BUG=chrome-os-partner:15849
TEST=suspend_stress_test

Change-Id: I309e80c6ec91e491d30ea0bfcb062ae7e55f7198
Signed-off-by: Michael Spang <spang@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37135
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>

UPSTREAM: char_dev: pin parent kobject

In certain cases (for example when a cdev structure is embedded into
another object whose lifetime is controlled by a separate kobject) it is
beneficial to tie lifetime of another object to the lifetime of
character device so that related object is not freed until after
char_dev object is freed.

To achieve this let's pin kobject's parent when doing cdev_add() and
unpin when last reference to cdev structure is being released.

BUG=chrome-os-partner:15849
TEST=suspend_stress_test

Change-Id: I35d1762c94afa8b3eda6329a0bf0cfc7dde98b7b
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Michael Spang <spang@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37134
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>

samsung: pm-check: Cleanup chunk exclude code

In a recent change to pm-check we added some more chunks of
memory to the list to exclude.  This cleans up how that works
a little bit:
* We now use a linker script to exclude printk buffers.  This has an
  advange of being generic (can add extra bits to exclusion without
  modifying pm-check) and also segregating printk buffers to their own
  chunk of memory.  If we do CRC on an 8K chunk we now won't exclude
  any extra memory when we exclude the printk buffers.
* Don't exclude *sleep_save_sp.  That was a physical address and is
  also already handled by current_thread_info().
* Don't exclude sleep_save_sp.  Instead: we zero it out before out
  code runs.  This is a transitory value and zeroing it is fine.  Now
  we won't exclude chunks of memory stored near sleep_save_sp.

This also has a few other minor fixes:
* Changes the in_region() function to fix some off-by-one errors and
  also to use physical addresses.
* Skips regions in s3c_pm_makecheck() too.
* Avoids goto in s3c_pm_runcheck() loop.

BUG=chrome-os-partner:15655
TEST=suspend_stress_test

Change-Id: Ic4febb1eb9aaa78d70984c149e26731af738727a
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/37031
Reviewed-by: Jon Kliegman <kliegs@chromium.org>
Reviewed-by: Michael Spang <spang@chromium.org>

drm/ptn3460: Add edid emulation selection

This patch adds edid selection to the ptn3460 driver so we can select
the appropriate display resolution from the device tree.

BUG=chrome-os-partner:11158
TEST=Tested on snow, no regressions detected

Change-Id: I19709a5b95d61061d415f3812dc7568d28e8b4ad
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/36700
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>