linux-toradex.git/drivers/gpu, branch v2.6.34.3

drm/i915: Check overlay stride errata for i830 and i845

2010-08-10T17:54:15+00:00

commit a1efd14a99483a4fb9308902397ed86b69454c99 upstream.

Apparently i830 and i845 cannot handle any stride that is not a multiple
of 256, unlike their brethren which do support 64 byte aligned strides.

Signed-off-by: Chris Wilson 
Signed-off-by: Eric Anholt 
Signed-off-by: Greg Kroah-Hartman

drm/radeon/kms/r7xx: add workaround for hw issue with HDP flush

2010-08-10T17:54:15+00:00

commit 812d046915f48236657f02c06d7dc47140e9ceda upstream.

Use of HDP_*_COHERENCY_FLUSH_CNTL can cause a hang in certain
situations.  Add workaround.

Signed-off-by: Alex Deucher 
Signed-off-by: Dave Airlie 
Signed-off-by: Greg Kroah-Hartman

drm/radeon/kms/igp: sideport is AMD only

2010-08-10T17:54:14+00:00

commit 4c70b2eae371ebe83019ac47de6088b78124ab36 upstream.

Intel variants don't support it.

Signed-off-by: Alex Deucher 
Signed-off-by: Dave Airlie 
Signed-off-by: Greg Kroah-Hartman

drm/i915: make sure we shut off the panel in eDP configs

2010-08-02T17:30:26+00:00

commit 5620ae29f1eabe655f44335231b580a78c8364ea upstream.

Fix error from the last pull request.  Making sure we shut the panel off
is more correct and saves power.

Signed-off-by: Jesse Barnes 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

drm/i915: make sure eDP panel is turned on

2010-08-02T17:30:25+00:00

commit 9934c132989d5c488d2e15188220ce240960ce96 upstream.

When enabling the eDP port, we need to make sure the panel is turned on
after training the link.  If we don't, it likely won't come back after
suspend or may not come up at all.

For unknown reasons, unlocking the panel regs before initiating a power
on sequence is necessary.  There are known bugs in the PCH panel
sequencing logic, apparently this is one possible workaround.

Fixes https://bugs.freedesktop.org/show_bug.cgi?id=28739.

Signed-off-by: Jesse Barnes 
Tested-by: "Paulo J. S. Silva" 
Signed-off-by: Eric Anholt 
Signed-off-by: Greg Kroah-Hartman

drm/i915: add PANEL_UNLOCK_REGS definition

2010-08-02T17:30:25+00:00

commit 4a655f043160eeae447efd3be297b6b4c397a640 upstream.

In some cases, unlocking the panel regs is safe and can help us avoid a
flickery, full mode set sequence.  So define the unlock key and use it.

Signed-off-by: Jesse Barnes 
Signed-off-by: Eric Anholt 
Signed-off-by: Greg Kroah-Hartman

drm/i915: handle shared framebuffers when flipping

2010-08-02T17:30:04+00:00

commit be9a3dbf65a69933b06011f049b1e2fdfa6bc8b9 upstream.

If a framebuffer is shared across CRTCs, the x,y position of one of them
is likely to be something other than the origin (e.g. for extended
desktop configs).  So calculate the offset at flip time so such
configurations can work.

Fixes https://bugs.freedesktop.org/show_bug.cgi?id=28518.

Signed-off-by: Jesse Barnes 
Tested-by: Thomas M. 
Tested-by: fangxun 
Signed-off-by: Eric Anholt 
Signed-off-by: Greg Kroah-Hartman

drm/i915: Hold the spinlock whilst resetting unpin_work along error path

2010-08-02T17:30:04+00:00

commit 468f0b44ce4b002ca7d9260f802a341854752c02 upstream.

Delay taking the mutex until we need to and ensure that we hold the
spinlock when resetting unpin_work on the error path. Also defer the
debugging print messages until after we have released the spinlock.

Signed-off-by: Chris Wilson 
Cc: Jesse Barnes 
Cc: Kristian Høgsberg 
Reviewed-by: Jesse Barnes 
Signed-off-by: Eric Anholt 
Signed-off-by: Greg Kroah-Hartman

drm/i915: don't queue flips during a flip pending event

2010-08-02T17:30:04+00:00

commit 83f7fd055eb3f1e843803cd906179d309553967b upstream.

Hardware will set the flip pending ISR bit as soon as it receives the
flip instruction, and (supposedly) clear it once the flip completes
(e.g. at the next vblank).  If we try to send down a flip instruction
while the ISR bit is set, the hardware can become very confused, and we
may never receive the corresponding flip pending interrupt, effectively
hanging the chip.

Signed-off-by: Jesse Barnes 
Signed-off-by: Eric Anholt 
Signed-off-by: Greg Kroah-Hartman

drm/i915: gen3 page flipping fixes

2010-08-02T17:30:04+00:00

commit 1afe3e9d4335bf3bc5615e37243dc8fef65dac8f upstream.

Gen3 chips have slightly different flip commands, and also contain a bit
that indicates whether a "flip pending" interrupt means the flip has
been queued or has been completed.

So implement support for the gen3 flip command, and make sure we use the
flip pending interrupt correctly depending on the value of ECOSKPD bit
0.

Signed-off-by: Jesse Barnes 
Signed-off-by: Eric Anholt 
Signed-off-by: Greg Kroah-Hartman