linux-stable.git/drivers/gpu, branch v3.1.8

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

2012-01-06T22:17:33+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

2012-01-06T22:17:22+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

2012-01-06T22:16:50+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/i915: set the right SDVO transcoder for CPT

2012-01-06T22:16:49+00:00

commit 3573c4103f7a486838bb6b5b8353788103f91802 upstream.

v2: add a CPT-specific macro, make code cleaner
v3: fix commit message

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=41272
Signed-off-by: Paulo Zanoni 
Reviewed-by: Chris Wilson 
Signed-off-by: Keith Packard 
Signed-off-by: Greg Kroah-Hartman

drm/radeon/kms: fix DP setup on TRAVIS bridges

2011-12-21T20:58:32+00:00

commit cf2aff6eff251b6fbdaf8c253e65ff7c693de8cd upstream.

Supposedly both NUTMEG and TRAVIS should use the same
panel mode, but switching the panel mode for TRAVIS
gets things working.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=41569

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

drm/radeon/kms: rework DP bridge checks

2011-12-21T20:58:32+00:00

commit 1d33e1fc8dcce667a70387b666a8b6f60153d90f upstream.

Return the encoder id rather than a boolean.  This is needed
for differentiate between multiple DP bridge chips.

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

drm/radeon/kms: cleanup atombios_adjust_pll()

2011-12-21T20:58:32+00:00

commit b4f15f808b9a79b6ad9032fa5f6d8b88e1e1bf11 upstream.

The logic was messy and hard to follow.

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

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

2011-12-09T16:54:32+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

2011-12-09T16:54:09+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 inconsistent backlight level during disabled

2011-12-09T16:54:08+00:00

commit 04b38670cf46c096705f24e92a8747d1ab89e53c upstream.

When the brightness property is inquired while the backlight is disabled,
the driver returns a wrong value (zero) because it probes the value after
the backlight was turned off.  This caused a black screen even after the
backlight is enabled again.  It should return the internal backlight_level
instead, so that it won't be influenced by the backlight-enable state.

BugLink: https://bugs.freedesktop.org/show_bug.cgi?id=41926
BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/872652

Tested-by: Kamal Mostafa 
Cc: Alex Davis 
Signed-off-by: Takashi Iwai 
Signed-off-by: Keith Packard 
Signed-off-by: Greg Kroah-Hartman