drm/radeon/kms: add R4XX mc register access helper.

Atombios will use the mc register access helper and R4XX hw have a
bigger mc range than R3XX so add R4XX specific mc register access
helper.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 24574bc0f2a..fa84c77577a 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -936,4 +936,8 @@ static inline void radeon_ring_write(struct radeon_device *rdev, uint32_t v)
 /* r100,rv100,rs100,rv200,rs200,r200,rv250,rs300,rv280 */
 void r100_cp_disable(struct radeon_device *rdev);
 
+/* r420,r423,rv410 */
+u32 r420_mc_rreg(struct radeon_device *rdev, u32 reg);
+void r420_mc_wreg(struct radeon_device *rdev, u32 reg, u32 v);
+
 #endif