drm/radeon/kms/atom: fix dual-link DVI on DCE3.2/4.0

Got broken during the evergreen merge.
Fixes fdo bug 27001.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c
index c52fc3080b67..9f7f56a55f0a 100644
--- a/drivers/gpu/drm/radeon/radeon_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_encoders.c
@@ -865,6 +865,8 @@ atombios_dig_transmitter_setup(struct drm_encoder *encoder, int action, uint8_t
                 else if (radeon_encoder->devices & (ATOM_DEVICE_DFP_SUPPORT)) {
                         if (dig->coherent_mode)
                                 args.v3.acConfig.fCoherentMode = 1;
+                        if (radeon_encoder->pixel_clock > 165000)
+                                args.v3.acConfig.fDualLinkConnector = 1;
                 }
         } else if (ASIC_IS_DCE32(rdev)) {
                 args.v2.acConfig.ucEncoderSel = dig->dig_encoder;
@@ -888,6 +890,8 @@ atombios_dig_transmitter_setup(struct drm_encoder *encoder, int action, uint8_t
                 else if (radeon_encoder->devices & (ATOM_DEVICE_DFP_SUPPORT)) {
                         if (dig->coherent_mode)
                                 args.v2.acConfig.fCoherentMode = 1;
+                        if (radeon_encoder->pixel_clock > 165000)
+                                args.v2.acConfig.fDualLinkConnector = 1;
                 }
         } else {
                 args.v1.ucConfig = ATOM_TRANSMITTER_CONFIG_CLKSRC_PPLL;