msm_fb: display: fix the underrun issue when playing interlaced videos

Interlaced videos require higher mdp clk rate and the current code
sets mdp clk to max and return. However mdp clk calculation may still
give a result higher than max mdp clk, for this case the result is
kept and used later to enable blt mode to avoid underrun.

Change-Id: I185d0d15e5b79e94561e790e41713cdb405f8bf4
Signed-off-by: Huaibin Yang <huaibiny@codeaurora.org>
msm_fb: Keep LCDC timing generator enabled during boot up

Keep the LCDC timing generator enabled during boot up on
MDP 3.03 targets if continuous splash screen feature is enabled.

Change-Id: I64276550f28e1f316c420f9cb158f7b8e938b8ea
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>

Conflicts:

	drivers/video/msm/mdp_hw_init.c
msm_fb: display: Fix blend configuration for MDP4.1

MDP4.1 blend operation registers are not double buffered and
take effect as soon as they are configured. Configuring these
registers at any place other than between dma and vsync produce
flickers as new blend values would get applied to previous
mixer configurations. Configure blend operation registers just
after dma is over, before vsync.

Change-Id: I377c11222f7a0cd77e98e90edec6e2e1dc0c17ca
Signed-off-by: Pradeep Jilagam <pjilagam@codeaurora.org>

Conflicts:

	drivers/video/msm/mdp4_overlay.c
msm_fb: display: Configure blend after DMA for DSI video

Change-Id: Ic7a81397f9d03a7d6baabdbf57d424ecd4377f26
msm_fb: Fix error in y-offset check logic in FB driver

After 4 KB alignment changes, the frame from 3rd buffer doesn't
get updated since during PUT_VSCREEN_INFO ioctl, the driver
returns -1 to userspace due to error in logic because the hole
size is not considered in calculating the logic for validity of
the y-offset. Change fixes this error.

CRs-fixed: 325134
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>
(cherry picked from commit d37b52404236bf4cadf530a238cafc5d6499d32a)

Change-Id: Ifccfa25a37fe0f8d86bf5b822d9affe7fa41203a
Signed-off-by: Srivalli Oguri <oguri@codeaurora.org>
msm_fb: Clean up the fix for error in y-offset check in FB driver

There is a failure observed in yres_virtual offset check and every
third frame gets skipped without an error message. Due to this high
fps is noticed in the test applications. Correct the yres_virtual
offset check.

CRs-fixed: 325134
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>
(cherry picked from commit 2bd101d5bed1729b317114456360605e86289c15)

Change-Id: I35af570df2d6d2609562203f30f3caa1506b9b1d
Signed-off-by: Srivalli Oguri <oguri@codeaurora.org>
msm_fb: display: Add pre-multiplied alpha support for MDP4.

MDP4 blend logic differs from GPU blend implementation as MDP4
does not differentiate between pre-multiplied alpha layers and
non pre-multiplied alpha layers. Check layers for pre-multiplied
alpha and change blend logic accordingly.

CRs-Fixed: 355755
CRs-Fixed: 361729
Change-Id: Id8253d3888f1ebbadba1b6bbd87e7d98bac22da7
Signed-off-by: Mayank Chopra <makchopra@codeaurora.org>

Conflicts:

	drivers/video/msm/mdp4_overlay.c
msm_fb: display: fix division-by-zero bug

Panel v_back_porch could be zero for virtual panels, so the check for
zero is added to fix the bug.

Change-Id: I6a29f3d8d771092bca2374cc9a1c11dd77ad569e
Signed-off-by: Huaibin Yang <huaibiny@codeaurora.org>
msm_fb: display: Add timeout for waiting on update

Content Adaptive BackLight userspace algo waits on UPDATE_NOTIFY to
get the screen updates. When turning off CABL, this blocking ioctl
causes the CABL threads to wait until next screen update, which may
take indefinite time.

Add timeout value to the wait_for_completion call, to make ioctl
call blocking for at most timeout value.

CRs-Fixed: 384026
Change-Id: I6715a36020c24ddd09823bd54d4321900429a6b9
Signed-off-by: Kinjal Bhavsar <kbhavsar@codeaurora.org>

Conflicts:

	drivers/video/msm/msm_fb.c
msm: display: fb blend setting via MSMFB_METADATA_SET ioctl

MSMFB_METADATA_SET ioctl is added for the fb user to pass
in additional infomation rather than using reserved
fields.
User can set pre-multiplied alpha for the frame buffer via this
ioctl, overlay blend setting will take this into account.

Change-Id: Ic2f6236d84691fb03174ec479874c6928489ea30
Signed-off-by: Ken Zhang <kenz@codeaurora.org>

Conflicts:

	drivers/video/msm/mdp4_overlay.c
	drivers/video/msm/mdp4_util.c
	drivers/video/msm/msm_fb.c
msm_fb : Add option to enable/disable  mixer commit

Adds support to enable or disable mixer commit during pipe
staging operations. Depending on the current activity, this
selection can be made.

Change-Id: Ia2f5dbab58f73ef4de90abf7f278332d8d73df46
Signed-off-by: Pradeep Jilagam <pjilagam@codeaurora.org>

Conflicts:

	drivers/video/msm/mdp4_overlay.c
	drivers/video/msm/mdp4_overlay_mddi.c
msm_fb: display: add blt condition check at video/lcdc off

Blt mode may be enabled during system suspend. Need to make
sure blt overlay done  before turn off video/lcdc timig generator.

Change-Id: Iad54ee544499213bb7c9cfe60d00919f819aacb1
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>

Conflicts:

	drivers/video/msm/mdp4_overlay_dsi_video.c
	drivers/video/msm/mdp4_overlay_lcdc.c