msm: kgsl: Do not detect faults when GPU core is idle

Do not detect GPU faults when GPU hardware status is idle,
this leads to incorrect fault detection.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>

Conflicts:
	drivers/gpu/msm/adreno.h

Change-Id: I7a9f8c49eb819241698f99fd50aaed400aadd4f4
Signed-off-by: Tarun Karra <tkarra@codeaurora.org>
Signed-off-by: Hareesh Gundu <hareeshg@codeaurora.org>
(cherry picked from commit 8002a0061d3ccfeccb93af50bce4ef44977845af)
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
msm: kgsl: Mark the IOMMU setstate memory as read only

Mark the IOMMU setstate memory as read only in the pagetable.

Change-Id: Ic0dedbadb19e499c749cd744c3e89be3bcb4c2a2
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
msm: kgsl: Allow GPU start to run in a high priority queue

The GPU start sequence needs to run with low latency when coming
out of slumber for the first draw command. For those cases allow the
start function to be queued into a high priority workqueue to reduce
the chance of it getting scheduled out.

Change-Id: Ic0dedbada7ef4d63b54e826862fbefdfb71a092a
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
msm: kgsl: Add an input handler to power up the GPU on a touch event

On a device where the primary input is a touchscreen nobody is
surprised that touch events are often the catalyst for drawing
frames. If the GPU is in slumber we can get a jump on the action
by watching for touch events and turning the GPU on in anticipation
of a draw call. Register for events from all input drivers
returning EV_ABS events and queue a work task to power up the GPU
if it is currently in slumber.

Change-Id: Ic0dedbadbdc96ef9ddd78252ea65f8e1cdd00110
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
msm: kgsl: Update calculation for graphics IOMMU context IDs

Calculate graphics IOMMU context IDs using the 'label' property of
the device tree node of that context. Context IDs are independent
of the register addresses of the SMMU device and its contexts, which
change for every target.

Change-Id: I16825d7248081997a442d4fb59ca5b04b88e33fd
Signed-off-by: Lokesh Batra <lbatra@codeaurora.org>
Signed-off-by: Lynus Vaz <lvaz@codeaurora.org>
Signed-off-by: Prabhat Awasthi <pawasthi@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
msm: kgsl: Remove sscanf() from kgsl_pwrctrl.c

Replace sscanf() in kgsl_pwrctrl.c with a generic function to safely
convert 32 bit unsigned ints.

CRs-fixed: 563585
Change-Id: Ic0dedbad10e2264ec8fccab622d094d123b49b77
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>

Conflicts:

	drivers/gpu/msm/kgsl_device.h
	drivers/gpu/msm/kgsl_pwrctrl.c

Signed-off-by: Paul Reioux <reioux@gmail.com>
msm: kgsl: Fix Z180 memory leak

Decerement entry refcount, which incremented
in kgsl_sharedmem_find_region.

CRs-Fixed: 635747
Change-Id: I621ba8f8e119a9ab8ba5455b28a565e3cae2f7cd
Signed-off-by: Hareesh Gundu <hareeshg@codeaurora.org>
msm: kgsl: Treat 0x0 as valid GPU pagetable physical address

Iommu driver could be allocating a valid GPU pagetable at
physical address 0x0, remove assumption from GPU kernel driver
that 0x0 is invalid pagetable address.

Change-Id: I213c0fbc1d90a13bef83c7d7589ad9e5729771fd
Signed-off-by: Tarun Karra <tkarra@codeaurora.org>
Revert "msm: kgsl: Add an input handler to power up the GPU on a touch event"

This reverts commit 07ea8a1f84b554236782664cbbc9acd26e968e41.