linux.git/drivers/gpu/drm/msm, branch v3.12-rc2

drm/msm: drop unnecessary set_need_resched()

2013-09-16T11:59:49+00:00

This was inherited from i915/udl, and not actually needed.

Signed-off-by: Rob Clark

drm/msm: fix potential NULL pointer dereference

2013-09-12T14:32:12+00:00

The dereference to 'pdata' should be moved below the NULL test.

Signed-off-by: Wei Yongjun

drm/msm: workaround for missing irq

2013-09-11T21:37:48+00:00

Occasionally we seem to miss an IRQ from the ME (microengine).  I'm not
entirely sure the root cause, but for now we can unwedge things by
retiring from the hangcheck timer.

Signed-off-by: Rob Clark

drm/msm: return -EBUSY if bo still active

2013-09-11T21:36:28+00:00

When we CPU_PREP a bo with NOSYNC flag (for example, to implement
PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE), an -EBUSY return indicates to
userspace that the bo is still busy.  Previously it was incorrectly
returning 0 in this case.

And while we're in there throw in an bit of extra sanity checking in
case userspace tries to wait for a bogus fence.

Signed-off-by: Rob Clark

drm/msm: fix return value check in ERR_PTR()

2013-09-11T21:31:33+00:00

In case of error, the function drm_prime_pages_to_sg() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().

Signed-off-by: Wei Yongjun

drm/msm: fix cmdstream size check

2013-09-10T17:57:42+00:00

Need to check size+offset against bo size (duh!).. now we have a test
case to make sure I've done it right:

https://github.com/freedreno/msmtest/blob/master/submittest.c

Also, use DRM_ERROR() for error case traces, which makes debugging
userspace easier when enabling debug traces is too much.

Signed-off-by: Rob Clark

drm/msm: hangcheck harder

2013-09-10T17:56:59+00:00

If gpu locks up with the rptr shortly beyond the wrap-around point in
the ringbuffer, because the rptr was not reset (but wptr is, by virtue
of resetting rb->cur), we could end up in a scenario where we think
there is not enough space in the ringbuffer for the next cmds.  And
since the CP won't reset rptr until after processing an IB, this leaves
things in a sort of deadlock.

So reset rptr too.  And a bit more spiffing up of hangcheck to make
things easier to debug.

Signed-off-by: Rob Clark

drm/msm: handle read vs write fences

2013-09-10T17:56:58+00:00

The userspace API already had everything needed to handle read vs write
synchronization.  This patch actually bothers to hook it up properly, so
that we don't need to (for example) stall on userspace read access to a
buffer that gpu is also still reading.

Signed-off-by: Rob Clark

drm/msm: convert to drm_bridge

2013-09-02T00:23:35+00:00

Drop the msm_connector base class, and special calls to base class
methods from the encoder, and use instead drm_bridge.  This allows for a
cleaner division between the hdmi (and in future dsi) blocks, from the
mdp block.

Signed-off-by: Rob Clark 
Signed-off-by: Dave Airlie

drm: Pass page flip ioctl flags to driver

2013-08-29T23:24:54+00:00

This lets drivers see the flags requested by the application

[airlied: fixup for rcar/imx/msm]

Signed-off-by: Keith Packard 
Signed-off-by: Dave Airlie