msm_fb: display: provision of mixer reset function

Mdp has hardware bug which cause fetch engine stalled if less than
3 pixels at begin or end of line be cropped into destination. Reset
mixer can fix this problem. However frame work can provide better
work around solution by falling back to gpu if the condition detected.
This patch will not reset mixer but provide mixer reset function in
case of mixer reset is need in future.

CRs-fixed: 443018
Change-Id: I38ee591f28bf1b81f4fbd58838281b43ba0a8498
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
msm_fb: display: Configure solidfill color to black

The solidfill color was getting reset to to default state to white.
Correctly reseting to black by default.

Crs-Fixed: 453600
Change-Id: I203ce61867d009509bf6acd01169f1fb0b223652
Signed-off-by: Siddhartha Agrawal <agrawals@codeaurora.org>
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
msm_fb: Fix adb shell start/stop issue when bypass enabled

Currently when 2/3/4 layer bypass is enabled, doing a adb shell
stop/start is failing overlay and composition happens through
GPU. Fix this issue by proper overlay configuration during this
scenario.

Change-Id: Ia04f1839bf80ed552671e48445af63a4dcd6bdfd
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
msm_fb: display: silent blending error warning message

If there had no any pipe blending stage changes, then do not
call belnding set up to avoid unnecessary warning messges.

CRs-fixed: 467556
Change-Id: I07520b3b0917375c41405e736dcb9eb8a3daddc1
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Revert "msm_fb: display: remove background invert alpha option for alpha drop pipe"

This reverts commit 0119007a18aae8a8fb43f4320509bda161da4167.

CRs-fixed: 461574
Change-Id: Ia768030ec859a4ff38549686936789413826df32
Signed-off-by: Mayank Chopra <makchopra@codeaurora.org>
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
msm_fb:display: correct bus bw for downscale case

The check condition for updating bus bandwidth if downscaling is
needed was always FALSE.

Change-Id: Iec0a4d13c7737d86976d76e0dfd3ec45062799fd
Signed-off-by: Siddhartha Agrawal <agrawals@codeaurora.org>
Signed-off-by: Huaibin Yang <huaibiny@codeaurora.org>
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
msm_fb: display: add mfd null pointer and mfd panel_power_on checks

These checks are necessary for the situations where display is off but
vsync ctrl enable or disable is still called.

CRs-Fixed: 462586
Change-Id: I2ee43ff323da38359f3bff28669df19b87d8343d
Signed-off-by: Huaibin Yang <huaibiny@codeaurora.org>
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
msm: footswitch-8x60: Skip GFX memory power collapse on 8064.

Update footswitch_disable to skip GFX memory power collapse on 8064 to avoid
any voltage droop on vddmx during GFX3D footswitch toggling.

As per hardware designer recommendations this would help to improve system
stability when responding to the inrush current event.

Change-Id: Ifa2f62629f0639d29f882d009dc5f4c10da46ca8
Signed-off-by: Shashank Mittal <mittals@codeaurora.org>
msm: display: Add DSI clock control for MDP GDHS power collapse

Enable DSI clock and regulator before enabling/disabling power collapse
for MDP GDHS.

(cherry picked from commit ad3200279e62eff01fd1bb9136cc9c0d11e10380)

(cherry picked from commit 58c5992c710df379e26bb210e00c74da501db9d2)

Change-Id: I76b91260c61abf214e688c0dea6989ed2cfa3801
Signed-off-by: Ravishangar Kalyanam <rkalya@codeaurora.org>
Signed-off-by: Siddhartha Agrawal <agrawals@codeaurora.org>
Signed-off-by: Ram Kumar Chakravarthy Chebathini <rcheba@codeaurora.org>
Signed-off-by: Dhivya Subramanian <dthiru@codeaurora.org>
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
msm_fb: display: add mdp clock control to histogram enable/disable

Add mdp clock control to histogram enable and disable block to
prevent system from crashing when accessing register with mdp
clocks off.

Change-Id: Ide808b332b5456f3fc639fcbb0d03d5cad0e387f
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
msm_fb : display : Change fps level dynamically.

This change lets the user modify the fps level dynamically using
sysfs interface.

Change-Id: Ie99bbca5ec1a0b5ff5fa3570874b254e3fb7235c
Signed-off-by: Vishnuvardhan Prodduturi <vproddut@codeaurora.org>
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
msm_fb: display: add early_off during panel off

Some panels need to send display_off command before
dsi controller turned off. This patch add early_off
feature for this purpose.

Change-Id: Id377120e9d6972c5f773760369ec056be37e93ff
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
msm_fb: display: restore previous mdp bandwidth when resume

mdp resume bandwidth is set to the value when device was suspend, so
that the correct init value is set to avoid underrun.

CRs-fixed: 425823
Change-Id: Ie9b832f0eb5b5e1b6cb5e8979626986d896d340b
Signed-off-by: Huaibin Yang <huaibiny@codeaurora.org>
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
msm_fb: display: add mutex to video_off

It is possible  that pipe_commit still be issued by
frame work after suspend had been started. Therefore
mutex lock within video_off is necessary to prevent
race condition from happening between these two threads.

Change-Id: I57f51744c1654d6def8664c492035631a5b7081e
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
msm_fb: display: Send pixel data while sending on/off commands

To avoid LCD off sequence violeation for some LCD vendors,
we need to keep sending video data during off/sleep commands.
This fixes issues seen while going to a suspend.

Crs-Fixed: 445707
Change-Id: I0ba2704502e8959d0f82deea60481cd5b1f0be20
Signed-off-by: Siddhartha Agrawal <agrawals@codeaurora.org>
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
msm: display: dsi command mode vsync time generation

In each vsync cycle there will be two vsync interrupts
generated, need ignore the wrong one to provide the correct vsync
timestamp.

CRs-fixed: 452269
Change-Id: Ic13eea77d15eb46f4879f818d346425c63efe41a
Signed-off-by: Ken Zhang <kenz@codeaurora.org>
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
msm: display: reduce timeline to 1 for smart panel

For smart display, dsi command and wfd, since it has its
own buffer, the input buffer can be released once the
display commit finishes, hence the fence threshold for
creation can be smaller. This patch reduce the timeline
from 2 to 1 for samrt panels. Also, it needs to
wait4dmap/wait4ov after kicked off. Otherwise, tearing may
happen.

Change-Id: I9eca871d8d863ef23b1d67b6e1e9cffea40ae4a6
Signed-off-by: Ken Zhang <kenz@codeaurora.org>
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
msm_fb: display: remove extra mdp4_dsi_cmd_clk_check()

Since mdp4_dsi_cmd_clk_check() is called inside of
mdp4_dsi_cmd_pipe_commit() also, mdp4_dsi_cmd_clk_check()
is called two times from pan display route. This patch
remove mdp4_dsi_cmd_clk_check() from mdp4_dsi_cmd_overlay()
to avoid mdp4_dsi_cmd_clk_check() called twice from
pan display route.

CRs-fixed: 449809
Change-Id: Idbeb968e6af73abac2bb8c800a8c55015ea6a0bf
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
rtc: rtc-pm8xxx: Enable RTC write operation

Enable RTC write operation for the APQ based target where user-space
time-service is disabled.

CRs-Fixed: 467157
Change-Id: I20500866b56d7372feeb629cf9e4e360aa8d4bba
Signed-off-by: Ashay Jaiswal <ashayj@codeaurora.org>
Merge "rtc: rtc-pm8xxx: Enable RTC write operation"