rs780_mc_wreg     128 drivers/gpu/drm/radeon/radeon_asic.c 		rdev->mc_wreg = &rs780_mc_wreg;
rs780_mc_wreg     366 drivers/gpu/drm/radeon/radeon_asic.h extern void rs780_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v);