linux-toradex.git/drivers/gpu, branch v3.2.53

drm/radeon/atom: workaround vbios bug in transmitter table on rs780

2013-11-28T14:02:05+00:00

commit c23632d4e57c0dd20bf50eca08fa0eb8ad3ff680 upstream.

Some rs780 asics seem to be affected as well.

See:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=91f3a6aaf280294b07c05dfe606e6c27b7ba3c72

Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=60791

Signed-off-by: Alex Deucher 
Signed-off-by: Ben Hutchings

drm: Prevent overwriting from userspace underallocating core ioctl structs

2013-11-28T14:02:05+00:00

commit b062672e305ce071f21eb9e18b102c2a430e0999 upstream.

Apply the protections from

commit 1b2f1489633888d4a06028315dc19d65768a1c05
Author: Dave Airlie 
Date:   Sat Aug 14 20:20:34 2010 +1000

    drm: block userspace under allocating buffer and having drivers overwrite it (v2)

to the core ioctl structs as well, for we found one instance where there
is a 32-/64-bit size mismatch and were guilty of writing beyond the end
of the user's buffer.

Signed-off-by: Chris Wilson 
Cc: Dave Airlie 
Reviewed-by: Ville Syrjälä 
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Dave Airlie 
Signed-off-by: Ben Hutchings

drm/radeon: fix hw contexts for SUMO2 asics

2013-11-28T14:02:02+00:00

commit 50b8f5aec04ebec7dbdf2adb17220b9148c99e63 upstream.

They have 4 rather than 8.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=63599

Signed-off-by: wojciech kapuscinski 
Signed-off-by: Alex Deucher 
Signed-off-by: Ben Hutchings

drm/i915/dp: increase i2c-over-aux retry interval on AUX DEFER

2013-10-26T20:06:06+00:00

commit 8d16f258217f2f583af1fd57c5144aa4bbe73e48 upstream.

There is no clear cut rules or specs for the retry interval, as there
are many factors that affect overall response time. Increase the
interval, and even more so on branch devices which may have limited i2c
bit rates.

Signed-off-by: Jani Nikula 
Reference: https://bugs.freedesktop.org/show_bug.cgi?id=60263
Tested-by: Nicolas Suzor 
Reviewed-by: Todd Previte 
Signed-off-by: Daniel Vetter 
Signed-off-by: Ben Hutchings

drm/radeon: disable tests/benchmarks if accel is disabled

2013-10-26T20:06:06+00:00

commit 4a1132a023eb48cf10522d84c5908d43b612c041 upstream.

The tests are only usable if the acceleration engines have
been successfully initialized.

Based on an initial patch from: Alex Ivanov 

Signed-off-by: Alex Deucher 
[bwh: Backported to 3.2: there is only one test: radeon_test_moves()]
Signed-off-by: Ben Hutchings

drm/radeon: fix panel scaling with eDP and LVDS bridges

2013-10-26T20:06:04+00:00

commit 855f5f1d882a34e4e9dd27b299737cd3508a5624 upstream.

We were using the wrong set_properly callback so we always
ended up with Full scaling even if something else (Center or
Full aspect) was selected.

Signed-off-by: Alex Deucher 
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings

drm/radeon/atom: workaround vbios bug in transmitter table on rs880 (v2)

2013-10-26T20:06:03+00:00

commit 91f3a6aaf280294b07c05dfe606e6c27b7ba3c72 upstream.

The OUTPUT_ENABLE action jumps past the point in the coder where
the data_offset is set on certain rs780 cards.  This worked
previously because the OUTPUT_ENABLE action is always called
immediately after the ENABLE action so the data_offset remained
set.  In 6f8bbaf568c7f2c497558bfd04654c0b9841ad57
(drm/radeon/atom: initialize more atom interpretor elements to 0),
we explictly reset data_offset to 0 between atom calls which then
caused this to fail.  The fix is to just skip calling the
OUTPUT_ENABLE action on the problematic chipsets.  The ENABLE
action does the same thing and more.  Ultimately, we could
probably drop the OUTPUT_ENABLE action all together on DCE3
asics.

fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=60791

v2: only rs880 seems to be affected

Signed-off-by: Alex Deucher 
Signed-off-by: Ben Hutchings

drm/i915: try not to lose backlight CBLV precision

2013-10-26T20:06:02+00:00

commit cac6a5ae0118832936eb162ec4cedb30f2422bcc upstream.

ACPI has _BCM and _BQC methods to set and query the backlight
brightness, respectively. The ACPI opregion has variables BCLP and CBLV
to hold the requested and current backlight brightness, respectively.

The BCLP variable has range 0..255 while the others have range
0..100. This means the _BCM method has to scale the brightness for BCLP,
and the gfx driver has to scale the requested value back for CBLV. If
the _BQC method uses the CBLV variable (apparently some implementations
do, some don't) for current backlight level reporting, there's room for
rounding errors.

Use DIV_ROUND_UP for scaling back to CBLV to get back to the same values
that were passed to _BCM, presuming the _BCM simply uses bclp = (in *
255) / 100 for scaling to BCLP.

Reference: https://gist.github.com/aaronlu/6314920
Reported-by: Aaron Lu 
Signed-off-by: Jani Nikula 
Reviewed-by: Aaron Lu 
Signed-off-by: Daniel Vetter 
[bwh: Backported to 3.2:
 - Adjust context
 - ASLE region is treated as normal memory rather than __iomem]
Signed-off-by: Ben Hutchings

drm/radeon: fix handling of variable sized arrays for router objects

2013-10-26T20:06:01+00:00

commit fb93df1c2d8b3b1fb16d6ee9e32554e0c038815d upstream.

The table has the following format:

typedef struct _ATOM_SRC_DST_TABLE_FOR_ONE_OBJECT         //usSrcDstTableOffset pointing to this structure
{
  UCHAR               ucNumberOfSrc;
  USHORT              usSrcObjectID[1];
  UCHAR               ucNumberOfDst;
  USHORT              usDstObjectID[1];
}ATOM_SRC_DST_TABLE_FOR_ONE_OBJECT;

usSrcObjectID[] and usDstObjectID[] are variably sized, so we
can't access them directly.  Use pointers and update the offset
appropriately when accessing the Dst members.

Signed-off-by: Alex Deucher 
Signed-off-by: Ben Hutchings

drm/radeon: fix resume on some rs4xx boards (v2)

2013-10-26T20:06:01+00:00

commit acf88deb8ddbb73acd1c3fa32fde51af9153227f upstream.

Setting MC_MISC_CNTL.GART_INDEX_REG_EN causes hangs on
some boards on resume.  The systems seem to work fine
without touching this bit so leave it as is.

v2: read-modify-write the GART_INDEX_REG_EN bit.
I suspect the problem is that we are losing the other
settings in the register.

fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=52952

Reported-by: Ondrej Zary 
Tested-by: Daniel Tobias 
Signed-off-by: Alex Deucher 
Signed-off-by: Ben Hutchings