Alex Deucher abc1e807c2 drm/radeon/atom: workaround vbios bug in transmitter table on rs880 (v2) ...

commit 91f3a6aaf2 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 6f8bbaf568
(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 <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2013-10-01 09:17:47 -07:00

..

drm

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

2013-10-01 09:17:47 -07:00

host1x

drivers/gpu/host1x/drm: don't check resource with devm_ioremap_resource

2013-05-18 11:55:30 +02:00

vga

fbcon: fix locking harder

2013-02-08 12:02:43 +10:00

Makefile

gpu: host1x: Add host1x driver

2013-04-22 12:32:40 +02:00