drm/radeon/kms: get lvds info for DIG LVTMA and UNIPHY encoders

Noticed by Rafał Miłecki on dri-devel.  On r6xx/r7xx hardware, laptop
panels can be driven by KLDSCP_LVTMA or UNIPHY.

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

1 files changed, 8 insertions, 2 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c
index c8ef0d14ffab..ea15284e7580 100644
--- a/drivers/gpu/drm/radeon/radeon_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_encoders.c
@@ -1700,8 +1700,14 @@ radeon_add_atom_encoder(struct drm_device *dev, uint32_t encoder_id, uint32_t su
         case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA:
         case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1:
         case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2:
-                drm_encoder_init(dev, encoder, &radeon_atom_enc_funcs, DRM_MODE_ENCODER_TMDS);
-                radeon_encoder->enc_priv = radeon_atombios_set_dig_info(radeon_encoder);
+                if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
+                        radeon_encoder->rmx_type = RMX_FULL;
+                        drm_encoder_init(dev, encoder, &radeon_atom_enc_funcs, DRM_MODE_ENCODER_LVDS);
+                        radeon_encoder->enc_priv = radeon_atombios_get_lvds_info(radeon_encoder);
+                } else {
+                        drm_encoder_init(dev, encoder, &radeon_atom_enc_funcs, DRM_MODE_ENCODER_TMDS);
+                        radeon_encoder->enc_priv = radeon_atombios_set_dig_info(radeon_encoder);
+                }
                 drm_encoder_helper_add(encoder, &radeon_atom_dig_helper_funcs);
                 break;
         }