linux-toradex.git/drivers/gpu, branch v3.0.16

drm/radeon/kms/atom: fix possible segfault in pm setup

2012-01-06T22:14:12+00:00

commit 4376eee92e5a8332b470040e672ea99cd44c826a upstream.

If we end up with no power states, don't look up
current vddc.

fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=44130

agd5f: fix patch formatting

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

drm/radeon/kms: bail on BTC parts if MC ucode is missing

2012-01-06T22:14:00+00:00

commit 77e00f2ea94abee1ad13bdfde19cf7aa25992b0e upstream.

We already do this for cayman, need to also do it for
BTC parts.  The default memory and voltage setup is not
adequate for advanced operation.  Continuing will
result in an unusable display.

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

drm/i915: prevent division by zero when asking for chipset power

2012-01-06T22:13:45+00:00

commit 4ed0b577457eb6aeb7cdc7e7316576e63d15abb2 upstream.

This prevents an in-kernel division by zero which happens when we are
asking for i915_chipset_val too quickly, or within a race condition
between the power monitoring thread and userspace accesses via debugfs.

The issue can be reproduced easily via the following command:
while ``; do cat /sys/kernel/debug/dri/0/i915_emon_status; done

This is particularly dangerous because it can be triggered by
a non-privileged user by just reading the debugfs entry.

This issue was also found independently by Konstantin Belousov
, who proposed a similar patch.

Reported-by: Konstantin Belousov 
Acked-by: Jesse Barnes 
Acked-by: Keith Packard 
Reviewed-by: Chris Wilson 
Signed-off-by: Eugeni Dodonov 
Signed-off-by: Keith Packard 
Signed-off-by: Greg Kroah-Hartman

drm/radeon/kms: add some loop timeouts in pageflip code

2011-12-09T16:52:38+00:00

commit f64964796dedca340608fb1075ab6baad5625851 upstream.

Avoid infinite loops waiting for surface updates if a GPU
reset happens while waiting for a page flip.

See:
https://bugs.freedesktop.org/show_bug.cgi?id=43191

Signed-off-by: Alex Deucher 
Reviewed-by: Mario Kleiner 
Tested-by: Simon Farnsworth 
Signed-off-by: Dave Airlie 
Signed-off-by: Greg Kroah-Hartman

drm/radeon/kms: fix up gpio i2c mask bits for r4xx

2011-12-09T16:52:23+00:00

commit 6c47e5c23aa2a7c54ad7ac13af4bd56cd9e703bf upstream.

Fixes i2c test failures when i2c_algo_bit.bit_test=1.

The hw doesn't actually require a mask, so just set it
to the default mask bits for r1xx-r4xx radeon ddc.

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

drm/i915: fix CB tuning check for ILK+

2011-12-09T16:52:22+00:00

commit cb0e093162d7b6589c2217a00e2abfef686b32d6 upstream.

CB tuning is needed to handle potential process variations that might
cause clock jitter for certain PLL settings.  However, we were setting
it incorrectly since we were using the wrong M value as a check (M1 when
we needed to use the whole M value).  Fix it up, making my HDMI
attached display a little prettier (used to have occasional dots crawl
across the display).

Signed-off-by: Jesse Barnes 
Signed-off-by: Keith Packard 
Signed-off-by: Timo Aaltonen 
Signed-off-by: Greg Kroah-Hartman

drm/ttm: request zeroed system memory pages for new TT buffer objects

2011-12-09T16:52:22+00:00

commit ff02b13f6867af72682d7a9bb9bd705f9af2bab0 upstream.

Fixes an information leak to userspace, we were handing out un-zeroed pages
for any newly created TTM_PL_TT buffer.

Reported-by: Marcin Slusarz 
Signed-off-by: Ben Skeggs 
Tested-by: Marcin Slusarz 
Signed-off-by: Dave Airlie 
Signed-off-by: Greg Kroah-Hartman

drm/i915: Turn on another required clock gating bit on gen6.

2011-12-09T16:52:22+00:00

commit 9ca1d10d748e56964de95e3ed80211b192f56cf4 upstream.

Unlike the previous one, I don't have known testcases it fixes.  I'd
rather not go through the same debug cycle on whatever testcases those
might be.

Signed-off-by: Eric Anholt 
Signed-off-by: Keith Packard 
Signed-off-by: Greg Kroah-Hartman

drm/i915: Turn on a required 3D clock gating bit on Sandybridge.

2011-12-09T16:52:21+00:00

commit 406478dc911e16677fbd9c84d1d50cdffbc031ab upstream.

Fixes rendering failures in Unigine Tropics and Sanctuary and the mesa
"fire" demo.

Signed-off-by: Eric Anholt 
Signed-off-by: Keith Packard 
Signed-off-by: Greg Kroah-Hartman

drm/i915: Ivybridge still has fences!

2011-12-09T16:52:21+00:00

commit 775d17b6ca4357048f36c22151335addfe15db4b upstream.

So don't forget to restore them on resume and dump them into
the error state.

Signed-off-by: Daniel Vetter 
Reviewed-by: Chris Wilson 
Signed-off-by: Keith Packard 
Signed-off-by: Greg Kroah-Hartman