radeon legacy chips: tv dac bg/dac adj updates

COMBIOS - fallback to table values if there are no tv dac or lvds bios tables
ATOMBIOS - add support for looking up these values from the bios table

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

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
index be52198fa56a..06e8038bc4ac 100644
--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -783,6 +783,9 @@ struct radeon_encoder_tv_dac *radeon_combios_get_tv_dac_info(struct
                                 tv_dac->pal_tvdac_adj = tv_dac->ps2_tvdac_adj;
                                 tv_dac->ntsc_tvdac_adj = tv_dac->ps2_tvdac_adj;
                         }
+                } else {
+                        DRM_INFO("No TV DAC info found in BIOS\n");
+                        return radeon_legacy_get_tv_dac_info_from_table(rdev);
                 }
         }
 
@@ -964,8 +967,10 @@ struct radeon_encoder_lvds *radeon_combios_get_lvds_info(struct radeon_encoder
                         }
                 }
                 encoder->native_mode = lvds->native_mode;
-        } else
+        } else {
                 DRM_INFO("No panel info found in BIOS\n");
+                return radeon_legacy_get_lvds_info_from_regs(rdev);
+        }
         return lvds;
 }