bool btc_dpm_vblank_too_short(struct radeon_device *rdev);
int sumo_dpm_init(struct radeon_device *rdev);
int sumo_dpm_enable(struct radeon_device *rdev);
+int sumo_dpm_late_enable(struct radeon_device *rdev);
void sumo_dpm_disable(struct radeon_device *rdev);
int sumo_dpm_pre_set_power_state(struct radeon_device *rdev);
int sumo_dpm_set_power_state(struct radeon_device *rdev);