msm: kgsl: Set sysfs max clock for devices with no power scale policy

When the sysfs entry for max clock is updated, set it immediately for the
devices that has no power scale policy. This prevents the device from
running with undesired clock.

(cherry picked from commit 6ca8011b4feb30c29e8e6fb5b3571fd2314879e0)

Change-Id: I3a4d689d90036edc243fa97562a79394ace94c2a
CRs-fixed: 408963
Signed-off-by: Ranjhith Kalisamy <ranjhith@codeaurora.org>
msm: kgsl: Restore the value of RB_BC_CONTROL on context switch

On 8x25Q, when GPU footswitch is turned off during TCXO shutdown, the
RB_BC_CONTROL register value is lost which causes GPU hang after coming
out of TCXO shutdown. Now the value of RB_BC_CONTROL is preserved properly
during context save and restore.

(cherry picked from commit 6b761ba560847bd7df4c6ff9de87bd6298d4b6e2)

Change-Id: I1999f88a5416445568c4b63ca0b99233551258f4
CRs-fixed: 441134
Signed-off-by: Vinay Roy <vroy@codeaurora.org>
msm: kgsl: Calculate busy interval considering GPU freq as float

GPU freq could be non-integral value and treating it as an integer
to calculate GPU busy insterval leads to higher busy interval
and more often we see negative idle stats. This change caculates
busy interval by treating gpu freq to the correct precision.

Change-Id: Ic54130803d7a0436b4ba31b09915eb7165d16590
CRs-fixed: 454972
Signed-off-by: Vinay Roy <vroy@codeaurora.org>
msm: kgsl: Hold the pm_qos vote at all times when ACTIVE

The GPU needs access to the L2 cache while running.  If the
CPU is not also active using the cache can lead to stability
issues.  Keep the CPU out of idle power collapse at all times
while the GPU is running.

CRs-Fixed: 397489

Change-Id: Iab2d8c601e903aadc4060f7c6d67bc128840edbf
Signed-off-by: Lucille Sylvester <lsylvest@codeaurora.org>

Conflicts:
	drivers/gpu/msm/kgsl_pwrctrl.c
msm: kgsl: Use the correct units for ADRENO_IDLE_TIMEOUT

In a few spots the ADRENO_IDLE_TIMEOUT value (measured in milliseconds)
was used directly for jiffy calculations resulting in timeouts that were
1000/HZ times longer than they should have been.  Use msecs_to_jiffies
for these situations.

CRs-Fixed: 448226
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
(cherry picked from commit 0bcdb735fb0ffa524638ab75acf76d3ddfe38616)

Change-Id: Ic2cd7eaf949d5c69c803fd109f206629de56ef9f
Signed-off-by: Srivalli Oguri <oguri@codeaurora.org>
msm: kgsl: Increase REG_RBBM_CNTL value to 0xFFFF for A20X

Increase number of clocks that RBBM will wait before de-asserting
the Register Clock Active signal. This fixes kernel panics during
stability tests on multiple devices

Change-Id: I6f7f8bb17cfd9c5beed0fd21d56ab6ab9fd40195
Signed-off-by: Rammohan Basavaraju <rammoh@codeaurora.org>
Signed-off-by: Rajeev Kulkarni <krajeev@codeaurora.org>
msm: kgsl: Turn off the CP_DEBUG dynamic clock

The CP dynamic clock seems to be glitchy when the CP clocks are turned
back on after a power event. Turn off said dynamic clock control at
init time. The impact of leaving the dynamic clock control off is
negligible since the CP clock is only on when the CP is actually in
use.

CRs-fixed: 402119
CRs-fixed: 409253
CRs-fixed: 413224
Change-Id: Ic0dedbad783f8b911d9b57d1602d9b3976af1b3b
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
msm: kgsl: Add cache flush for A20x

Adding extra cache flush command to make sure that CP block
gets event from RB all the time to avoid race conditions because of
clock switches. this is to improve stability on 8x25 target.

(cherry picked from commit fd5f8a4e3dc902d32f5b37de67555e56b887f759)

Change-Id: I32063b1d4ab6180159f868b47c7e0fd79d7b12b3
Signed-off-by: Gopal Goberu <ggober@codeaurora.org>
msm: kgsl: Add CP_WAIT_FOR_IDLE packet before updating timestamp

HW workaround to resolve MMU pagefault caused by memory
freeing early before GPU completes it.

This is race condition where timestamp is getting updated
and the event handler runs before the GPU actually got done
with the timestamp, hence freeing the buffer early while GPU
still not completed with it.

Signed-off-by: Anshuman Dani <adani@codeaurora.org>
(cherry picked from commit faf69cfeeede0883b9556e532d720ab4dc95b01d)

Change-Id: I6105250faff58da588e4bb6b3f4101e49e5c4758
Signed-off-by: Gopal Goberu <ggober@codeaurora.org>
msm: kgsl: Always submit an interrupt request to the GPU

A context does not have to be present to send an internal dummy
command to the GPU.  Remove BUG() in this case and instead send
a NULL context which will still cause the interrupt to get submitted
to the GPU.

CRs-fixed: 392688
Change-Id: I66b6eebe899ab09e6615d08faddea7ea73de5c6d
Signed-off-by: Carter Cooper <ccooper@codeaurora.org>
msm: kgsl: Check for valid pointer before dereferencing

Check to make sure that there is a valid context pointer before
dereferencing it when adding commands to the ringbuffer.

Change-Id: Icf9824de8f62a28cdeeef4378246d9fb334d39fa
Signed-off-by: Carter Cooper <ccooper@codeaurora.org>
Revert "msm: kgsl: Update pagetable on context destruction for A20x"

This reverts commit f0d1c9b79e05972816b92bd43b29e98f764826ea.

Reverting this change since it corrupts Bin Base Offset between
two draws of a Binning pass, resulting in GPU hang.

(cherry picked from commit 3ec5d2db139d0941ec8360f6cc399223b18469e5)

Change-Id: Ie1853075533e15e6c8020a00e57b1695df81c9ba
Signed-off-by: Rajesh Kemisetti <rajeshk@codeaurora.org>
msm_fb: Build video enhancer for ariesve only