drm/radeon: Use direct mapping for fast fb access on RS780/RS880 (v2)

v2: fix trailing whitespace

Signed-off-by: Samuel Li <samuel.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c
index 06b8c19ab19e..a2802b47ee95 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.c
+++ b/drivers/gpu/drm/radeon/radeon_asic.c
@@ -122,6 +122,10 @@ static void radeon_register_accessor_init(struct radeon_device *rdev)
                 rdev->mc_rreg = &rs600_mc_rreg;
                 rdev->mc_wreg = &rs600_mc_wreg;
         }
+        if (rdev->family == CHIP_RS780 || rdev->family == CHIP_RS880) {
+                rdev->mc_rreg = &rs780_mc_rreg;
+                rdev->mc_wreg = &rs780_mc_wreg;
+        }
         if (rdev->family >= CHIP_R600) {
                 rdev->pciep_rreg = &r600_pciep_rreg;
                 rdev->pciep_wreg = &r600_pciep_wreg;