| commit | 6698ddd49e632dfb49b093fa73cf9ff0001292dc | |
| author | Alex Deucher <alexdeucher@gmail.com> | |
| Tue, 20 Jul 2010 15:27:54 +0000 (20 11:27 -0400) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Mon, 2 Aug 2010 17:26:34 +0000 (2 10:26 -0700) | ||
| tree | 340a30be0072377bc870af1631b9e127089ab9d3 | treesnapshot (tar.gz zip) |
| parent | ff98d91809b0549418be3e330c848ac0341cf4a1 | commitdiff |
drm/radeon/kms: fix shared ddc harder
commit 42f14c4b454946650cf0bf66e0b631d02e328f61 upstream.
This fixes a regression caused by b2ea4aa67bfd084834edd070e0a4a47857d6db59
due to the way shared ddc with multiple digital connectors was handled.
You generally have two cases where DDC lines are shared:
- HDMI + VGA
- HDMI + DVI-D
HDMI + VGA is easy to deal with because you can check the EDID for the
to see if the attached monitor is digital. A shared DDC line with two
digital connectors is more complex. You can't use the hdmi bits in the
EDID since they may not be there with DVI<->HDMI adapters. In this case
all we can do is check the HPD pins to see which is connected as we have
no way of knowing using the EDID.
Reported-by: trapdoor6@gmail.com
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit 42f14c4b454946650cf0bf66e0b631d02e328f61 upstream.
This fixes a regression caused by b2ea4aa67bfd084834edd070e0a4a47857d6db59
due to the way shared ddc with multiple digital connectors was handled.
You generally have two cases where DDC lines are shared:
- HDMI + VGA
- HDMI + DVI-D
HDMI + VGA is easy to deal with because you can check the EDID for the
to see if the attached monitor is digital. A shared DDC line with two
digital connectors is more complex. You can't use the hdmi bits in the
EDID since they may not be there with DVI<->HDMI adapters. In this case
all we can do is check the HPD pins to see which is connected as we have
no way of knowing using the EDID.
Reported-by: trapdoor6@gmail.com
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| drivers/gpu/drm/radeon/radeon_connectors.c | diffblobblamehistory |