msm_fb: dtv: Serve device off in a separate thread

DTV device should not be powered down until the audio engine has
shutdown. This change moves dtv audio off sequence to a separate
thread so that framebuffer close system call does not get blocked.

CRs-Fixed: 412575
Change-Id: I246a9e58f1367e653913773696510f375abf3d3a
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>
msm_fb: display: wake up system around vsync

To avoid frame drops due to power collapse,
wake up cpu right before vsync.

Change-Id: I63385eb329ae5e74cbac5256823fd3a213e0a0e1
Signed-off-by: Ken Zhang <kenz@codeaurora.org>
msm_fb: display: add video mode dcs cmdlist support

Add video mode dcs command list support. This patch
make sure dcs commands committed while dsi video engine
is busy so that dcs command will be transmitted at beginning
of next BLLP.

Change-Id: I11b0214ee10f3b1ef33b1da4c8e577800068cb06
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Siddhartha Agrawal <agrawals@codeaurora.org>
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>
Signed-off-by: Shruthi Krishna <skrish@codeaurora.org>
msm_fb: display: fix dsi_busy_wait race condition

After pipe_commit() released mutex and before kickoff happens,
There has possibility that dcs command may start transmitted.
This patch add dsi_mdp_busy flag to fix this race condition.

Change-Id: I0d9a81cd0719085c91c03386117261ad3bb6b182
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Siddhartha Agrawal <agrawals@codeaurora.org>
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>
Signed-off-by: Shruthi Krishna <skrish@codeaurora.org>
msm_fb: dsiplay: fix frame buffer f_count leak

Frame buffer maintains a reference count (f_count) which increased
by fget() and decreased by fput(). overlay play will apply
fget() to frame buffer if it was the soruce buffer and fput()
will be applied to it after pipe commit done. However there has
extra fput() apply to frame buffer at the time pipe is freed.
This patch fix the problem by  clear MDP_MEMORY_ID_TYPE_FB from
pipe's flags to avoid extra fput() applying to frame buffer.

CRs-fixed: 411394
Change-Id: Ib2b72e6277480b5ace23cda554be485d9d477b3d
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Siddhartha Agrawal <agrawals@codeaurora.org>
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>
Signed-off-by: Shruthi Krishna <skrish@codeaurora.org>
msm_fb: display: fix page fault during supend/resume

There has VG1 pipe commit (pan display) happen after system
suspended. This left VG1 still staged up at mdp mixer. Once timing
generator is enabled at resume, VG1 pipe start fetching contents from
address 0 since VG1 has not yet be configured. This cause page fault.
This patch has sanity check at system suspend to make sure no any pipe
stage up at mixer after suspend.

Change-Id: Idcf974ceb4afe2a3ec55b9603b700fa497f84045
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Siddhartha Agrawal <agrawals@codeaurora.org>
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>
Signed-off-by: Shruthi Krishna <skrish@codeaurora.org>
msm_fb: display: return fail if pipe still staged

Pipe is not un-staged from mixer when it is unset.
It expects a pan_display() to un-stage it out of mixer.
Return fail at overlay_set() if pipe was still stage
at mixer.

CRs-fixed: 399193, 393979
Change-Id: I562f6e133bb239b30f4f53669dbf1cc5ddf80d02
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Siddhartha Agrawal <agrawals@codeaurora.org>
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>
Signed-off-by: Shruthi Krishna <skrish@codeaurora.org>
msm_fb: display: add wait4videodone for video mode

Add wait4videodone to commit dcs commands to dsi controller
while video engine is busy so that dcs commands will be
transmitted to panel at next beginning of BLLP.

Change-Id: I7ca40124813452f25a60f899437aeb9bce6feb14
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Siddhartha Agrawal <agrawals@codeaurora.org>
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>
Signed-off-by: Shruthi Krishna <skrish@codeaurora.org>
msm_fb: display: Removing extra disable irq in cmds_rx API's

Disable IRQ for DSI_CMD_TERM was already called in the isr.
Removing the extra call present in the cmds_rx API's.

Change-Id: I0000dd3166beb2a3b0c788327e1d7520e0c11a13
Signed-off-by: Siddhartha Agrawal <agrawals@codeaurora.org>
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>
Signed-off-by: Shruthi Krishna <skrish@codeaurora.org>
msm_fb: Handle histogram IRQ cleanly during suspend/resume

Currently, if the histogram disable IOCTL comes after panel
is turned off, we early return the IOCTL causing the interrupt
to be left enabled. This causes IPC issues during suspend. Fix
this issue by properly enabling/disabling the histogram interrupt
during suspend/resume scenario.

CRs-Fixed: 434491
Change-Id: I4d38776a43ea854aff3c10c8d9d5450af1d98c91
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>

Conflicts:

	drivers/video/msm/mdp.c
msm_fb: HDMI: Start HDCP authentication only on device open

Currently HDCP authentication is started for a default resolution
upon HPD connection event. With this change, HDCP authentication
is only triggered after the HDMI interface has been configured for
an appropriate resolution following the call to open the HDMI device.

CRs-fied: 368865 360135
Change-Id: I7b9ce85aed989b78b448bff6a545a194dfed5b1d
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>
Signed-off-by: Ramakrishna Prasad N <crpn@codeaurora.org>

Conflicts:

	drivers/video/msm/hdmi_msm.c
msm_fb: HDMI: Do not add HPD state timer during probe

Currently all HDMI timers are initialized in the driver's
probe function with a maximum possible expiration value. However,
the 32-bit jiffies value is initialized in the kernel so as to
wrap 5 minutes after boot. This results in the HPD timer being
fired 5 minutes after boot even though cable  is not
connected. This change fixes this issue by not starting the HPD
timer during probe.

CRs-fixed: 360135
Change-Id: I9eeb8b892be2476e8debdd4ec5897a103cc34665
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>
Signed-off-by: Abhishek Kharbanda <akharban@codeaurora.org>
Signed-off-by: Manoj Rao <manojraj@codeaurora.org>
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>
Signed-off-by: Ramakrishna Prasad N <crpn@codeaurora.org>
msm_fb: hdmi: Proper switching of switch device

Switch device used to tell userspace about HDMI connection
needs to be enabled when:
1. HPD connect
2. Authentication successful

And disable when:
1. HPD disconnect
2. Authentication failed

CRs-fixed: 360135
Change-Id: I8d4529fa2335ec1b2dc1196e57e3c8bad7d6b657
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>
Signed-off-by: Ramakrishna Prasad N <crpn@codeaurora.org>
msm_fb: HDMI: HDCP: Start HDCP authentication as a work item

HDCP authentication should be kicked off as a scheduled work
item so as to ensure that MDP is already configured and frames
are being transmitted over the HDMI channel prior to the start
of the HDCP authentication procedure.

CRs-fixed: 384513
Change-Id: I27cab44babfc24d91a318b0641674f85910cc33f
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>
Signed-off-by: Ramakrishna Prasad N <crpn@codeaurora.org>
msm_fb: HDMI: Fix for HW reset issue on HDCP Reauth

On HDCP reauthentication, the HDCP link status register does not
get cleared unless the HDMI app clock is deasserted and asserted.
Stale values in the link status registers can potentially lead to
the HDCP HW block getting locked up resulting in a device reset.

Change-Id: I4952c64d4087e4303cbc75dbb61f66510b0a0798
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>
msm: display: increase fence timeout

Increase timeout value to 900ms to allow
gfx engine to render longer.
When sync_fence_wait fails, need not put fence as
it will be handled outside the loop.

Change-Id: Id4caff55c9f99c48e5f87a85d30fe4c8c0cd65e7
Signed-off-by: Ken Zhang <kenz@codeaurora.org>
Signed-off-by: Shruthi Krishna <skrish@codeaurora.org>
msm_fb: display: Fix wait4vsync/irq_ctrl for dtv

Change Ief84b1b421436e1f750288eb9a9760a9cb96c555 wasn't fully
applied and missed dtv, fixit

Change-Id: Ib1b345b0287049d5d797909e0d079503bacd5a78
msm_fb: hdmi: add range check for format

While accessing the video format from
reserved field of screeninfo the video
format should be checked for sanity. This
change adds appropriate range check for this
value.

Change-Id: Ib4828a1819caf402ad074b582777cb3d5e81b275
Signed-off-by: Manoj Rao <manojraj@codeaurora.org>
video: msm: Enable mdp clock for histogram and histLUT

Enable the mdp clock for histogram and histogram LUT to ensure that the
clock remains enabled when they are being accessed.

Change-Id: Ic744f2ee96b64442f23ba19aa1c38552c0dad83a
Signed-off-by: Carl Vanderlip <carlv@codeaurora.org>
(cherry picked from commit e782ceab26e38590cd49a9bb273da1dbf1984ccd)
msm_fb: display: Update mdp clock counter for unsuccessful probes

If a panel probe does not succeed, call mdp_clk_ctrl to maintain
mdp_clk_cnt counter else mismatch in counter results in mdp clock
to never go off in cases like suspend-resume.

CRs-fixed: 385560
Signed-off-by: Mayank Chopra <makchopra@codeaurora.org>
(cherry picked from commit 3c5ae1f883a8b6a7812d936c5f7e5bb4d0d3142b)

Change-Id: Ib508011628ee81a90b29d30f14429cf186c47ebe
Signed-off-by: Ramakrishna Prasad N <crpn@codeaurora.org>
Signed-off-by: Jeevan Shriram <jshriram@codeaurora.org>