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authorAlex Deucher <alexander.deucher@amd.com>2014-03-07 03:09:52 +0400
committerAlex Deucher <alexander.deucher@amd.com>2014-03-07 03:09:52 +0400
commitd03874c881a049a50e12f285077ab1f9fc2686e1 (patch)
tree98195e921b4818b6655212ef62595cbec7a7f90b /drivers
parent13714323f83ffa5a772fe0d8b74e0fa32ee08819 (diff)
downloadlinux-d03874c881a049a50e12f285077ab1f9fc2686e1.tar.xz
drm/radeon/atom: select the proper number of lanes in transmitter setup
We need to check for DVI vs. HDMI when setting up duallink since HDMI is single link only. Fixes 4k modes on newer asics. bug: https://bugs.freedesktop.org/show_bug.cgi?id=75223 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/radeon/atombios_encoders.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c
index 2cec2ab02f80..607dc14d195e 100644
--- a/drivers/gpu/drm/radeon/atombios_encoders.c
+++ b/drivers/gpu/drm/radeon/atombios_encoders.c
@@ -1314,7 +1314,7 @@ atombios_dig_transmitter_setup(struct drm_encoder *encoder, int action, uint8_t
}
if (is_dp)
args.v5.ucLaneNum = dp_lane_count;
- else if (radeon_encoder->pixel_clock > 165000)
+ else if (radeon_dig_monitor_is_duallink(encoder, radeon_encoder->pixel_clock))
args.v5.ucLaneNum = 8;
else
args.v5.ucLaneNum = 4;