msm: mdss: add iommu attach in bus bandwidth control request

Add mdss_iommu_attach in mdss_bus_bandwidth_ctrl to
attach iommu on bus bandwidth enable request.
mdss_iommu_attach/mdss_iommu_dettach can happen in
separate thread, which may lead to a race condition
where attach/detach may happen at same time. Add lock
to properly synchronize the iommu attach/detach to
fix race condition.

Change-Id: I45c8ef1fa1fa1c2da9c6c3702bd007856e469b9d
Signed-off-by: Pawan Kumar <pavaku@codeaurora.org>
mdss: fb: Unblock blit ioctl calls when commit is occuring

Since BLIT calls have no effect on the frame being commited it
does not need to block in pan_idle.

Change-Id: Ic0cfa7c0c275ddc051b60ff8823fcd7299cb8b57
Signed-off-by: Terence Hampson <thampson@codeaurora.org>
msm: mdss: Fix race conditions during device shutdown

Wait for the display commit thread to exit and abort all
pending ioctls when releasing the framebuffer device. This is
necessary to address any potential race conditions between these
threads that operate on a common data structure.

Change-Id: I5ab32758c34d4e80c4e85f949ffa0054d3cb5340
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>

Conflicts:
	drivers/video/msm/mdss/mdss_fb.c
Revert "msm: mdss: Flush pending clk work before set ctx variable to 0"

This issue was fixed with commit "msm: mdss: cancel or wait for the clock
work to finish" (8e337b2bb85). So revert this.

This reverts commit 2d047929e20fbefd1abca483dae3a738240ce76a.

Change-Id: I12aa969f8091abe643af1fe6421e48ff92c0a777
Signed-off-by: Han Jun-Yeong <junyeong.han@lge.com>
Signed-off-by: Devin Kim <dojip.kim@lge.com>
msm: mdss: fb: Copy & send unsigned value for notify update

Copy unsigned long from userspace and modify the data fields
before copying back unsigned long data to userspace. This
keeps the datatypes of all operands homogeneous without
data leaks from kernel to user space.

CRs-Fixed: 526286
Change-Id: Ie4673563170c3459019dd6a5f1f55376f6e560c7
Signed-off-by: Krishna Chaitanya Parimi <cparimi@codeaurora.org>
Signed-off-by: Manoj Rao <manojraj@codeaurora.org>
msm: mdss: release all overlay resources on last fb release

There are cases where the last frame buffer reference is released from a
different pid than the one who originally allocated the resource.
In these cases we can still deallocate all resources currently allocated
as we know that all references on fb dev have been released.

This issue was previously fixed by a42150bd. But later it again resurfaced
with 831a828.

Change-Id: Ie35194b1e11ae90ff886b1be22cf02c842a76d1a
Signed-off-by: Ujwal Patel <ujwalp@codeaurora.org>
msm: mdss: release all overlay resources if calling process is unknown

There are cases where fb release is called from a process which is
unknown to internal process tracking list. This usually happens when
a crash handlers closes open fds in a kernel worker thread rather than
in process context. In such cases if fb open happens from a completely
new process then it may lead to pipe leakage due to race condition
between unknown process and this new, fb open, process. Prevent this by
releasing all overlay resources when fb release is called from an
unknown process context.

Change-Id: I07157116413dfb26e0b87c61f9def916a653340a
Signed-off-by: Ujwal Patel <ujwalp@codeaurora.org>

Conflicts:
	drivers/video/msm/mdss/mdss_fb.h
mdss: dsi: Resolving memory leak in parse dsi commands

Free buf variable before exiting function in error cases
in order to avoid possible memory leaks.

Change-Id: I8ebc3f0f3f40be85e312f9646374a074f1414bdb
Signed-off-by: Krishna Chaitanya Parimi <cparimi@codeaurora.org>
mdss: mdp3 driver support for solid fill

This patch adds the support for solid fill from the driver side.
With this support mdp hw can be used for clearing the buffer.

Change-Id: I55da06a8343cd11eeeee361a738c4d72c944fc73
Signed-off-by: Shivaraj Shetty <shivaraj@codeaurora.org>
mdss: support for solid fill with color specified by HAL

This patch provides the support for filling the frame buffer with
any color specified by the HAL.

Change-Id: I9414764f858e309d35967430ef4e6f83d5e42e3e
Signed-off-by: Shivaraj Shetty <shivaraj@codeaurora.org>
msm: mdss: Use MDP_SOLID_FILL to enable color on pipe

To enable constant color on a pipe, set MDP_SOLID_FILL in pipe
flag. This will do a solid fill on the pipe with the color
specified in bg_color.

CRs-Fixed:592032
Change-Id: I3201e2fa657a6fc6d0e7f51f8585366afc3d29a3
Signed-off-by: Mayank Chopra <makchopra@codeaurora.org>
msm: mdss: Flush pending clk work before set ctx variable to 0

When clk work function use ctx variable, this variable can be set 0 array
by mdss_mdp_cmd_stop function and it causes kernel panic.
To fix kernel panic of NULL pointer dereference, flush pending clk work
before set ctx variable to 0.

Change-Id: I0206d40ae7e1ab5857feb2e1ed4fea3b74a0852f
Signed-off-by: Han Jun-Yeong <junyeong.han@lge.com>
Signed-off-by: Devin Kim <dojip.kim@lge.com>
msm: mdss: Set correct flush bit for writeback mixer.

Wrong flush bit is being set for writeback mixer which can cause
MDP hang/unexpected behaviour when the mixer is used in line mode.
This patch addresses the issue by setting the correct flush bit.

Change-Id: Ie0c2ee27b1f466164a8fb84f7daae9309b74d1d8
Signed-off-by: Vishnuvardhan Prodduturi <vproddut@codeaurora.org>
msm: mdss: Support planar output format for rotator

For high end targets planar format as output from the rotator
can be supported as there are more SMP blocks available relatively.
Also, this gives HAL flexibility with the output buffer as currently
its always defaulted to Psuedo Planar.

Change-Id: I0428ea2a227bf73bc4eada0d2533520799321195
Signed-off-by: Sree Sesha Aravind Vadrevu <svadrevu@codeaurora.org>

Conflicts:
	drivers/video/msm/mdss/mdss_mdp_intf_writeback.c
msm: mdss: Add support to halt pipe fetches

Add a utility to halt any pipe fetches and wait on it until all fetches
are completely halted. Use this utility during staging and un-staging
of the pipe.

Change-Id: Id865970063dffc2870be5fd2cf51b9711134dc89
Signed-off-by: Ujwal Patel <ujwalp@codeaurora.org>

Conflicts:
	drivers/video/msm/mdss/mdss_mdp.c
msm: mdss: create new vsync timeline for retire fences

Retire fence timeline should follow the actual panel vsync more closely.
In case of command mode the panel vsync can be different from buffer
release timeline. To handle the panel vsyncs better, create a new
timeline for the retire fence signaling.

Change-Id: If8a1eb717d733ca215275a8be4f0054091dbc147
Signed-off-by: Adrian Salido-Moreno <adrianm@codeaurora.org>

Conflicts:
	drivers/video/msm/mdss/mdss_fb.c
	drivers/video/msm/mdss/mdss_mdp.h
	drivers/video/msm/mdss/mdss_mdp_overlay.c
msm: mdss: increase retire fence timeline with retire count

Account for cases where multiple retire fences are acquire before
previous ones are signaled. It may happen that the next retire fence is
acquired before the current one has been signaled, we want to signal on
the next vsync instead of the current one.

Change-Id: Ieff3115f9b10ea1a917eebdb6a32e44bc2e71c73
Signed-off-by: Adrian Salido-Moreno <adrianm@codeaurora.org>
msm: mdss: Fix race condition for vsync irq enable/disable

Disable and enable of vsync happens in separate thread, which
may lead to a race condition where enable/disable may
happen at the same time and resulting irq in disable state.
Add lock to properly synchronize the enabling/disabling
of vsync interrupts to fix race condition.

Change-Id: Ib52bea5ca7a3612c866a4a962f09725a77e40563
Signed-off-by: Pawan Kumar <pavaku@codeaurora.org>
msm: mdss: set vsync clock rate

Vsync clock rate is not set when vsync clock is enabled.
This cause command mode TE logic not works.

Change-Id: Ibf7dd07e53b2cd76ef30f13133368000c79ae149
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
msm: mdss: Fix error in BL linearity inverse LUT check

Associate the maximum index for the BL linearity inverse LUT with the
table size and not the maximum backlight value. The maximum backlight
value can cause an out of bounds index for the BL linearity inverse LUT.

Change-Id: I35fb276f8f1cc6be3be158fa25e6442be438cbf0
Signed-off-by: Benet Clark <benetc@codeaurora.org>