r420_mc_rreg      107 drivers/gpu/drm/radeon/radeon_asic.c 		rdev->mc_rreg = &r420_mc_rreg;
r420_mc_rreg      200 drivers/gpu/drm/radeon/radeon_asic.h extern u32 r420_mc_rreg(struct radeon_device *rdev, u32 reg);