drm/radeon/si: enable DMA pg by default

Enable DMA powergating by default.  The DMA engines
will be powergated when not in use.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/radeon_asic.c

@@ -2389,9 +2389,9 @@ int radeon_asic_init(struct radeon_device *rdev)
 				RADEON_CG_SUPPORT_UVD_MGCG |
 				RADEON_CG_SUPPORT_HDP_LS |
 				RADEON_CG_SUPPORT_HDP_MGCG;
-			rdev->pg_flags = 0;
-					/*RADEON_PG_SUPPORT_GFX_CG |
-			  		  RADEON_PG_SUPPORT_SDMA;*/
+			rdev->pg_flags = 0 |
+				/*RADEON_PG_SUPPORT_GFX_CG | */
+				RADEON_PG_SUPPORT_SDMA;
 			break;
 		case CHIP_OLAND:
 			rdev->cg_flags =

drivers/gpu/drm/radeon/si.c

@@ -5279,13 +5279,6 @@ static void si_fini_cg(struct radeon_device *rdev)
 			    RADEON_CG_BLOCK_HDP), false);
 }
 
-void si_update_pg(struct radeon_device *rdev,
-		  bool enable)
-{
-	si_enable_dma_pg(rdev, enable);
-	si_enable_gfx_cgpg(rdev, enable);
-}
-
 u32 si_get_csb_size(struct radeon_device *rdev)
 {
 	u32 count = 0;
@@ -5387,7 +5380,8 @@ static void si_init_pg(struct radeon_device *rdev)
 		if (rdev->pg_flags & RADEON_PG_SUPPORT_GFX_CG) {
 			si_init_gfx_cgpg(rdev);
 		}
-		si_update_pg(rdev, false);
+		si_enable_dma_pg(rdev, true);
+		si_enable_gfx_cgpg(rdev, true);
 	} else {
 		WREG32(RLC_SAVE_AND_RESTORE_BASE, rdev->rlc.save_restore_gpu_addr >> 8);
 		WREG32(RLC_CLEAR_STATE_RESTORE_BASE, rdev->rlc.clear_state_gpu_addr >> 8);
@@ -5397,10 +5391,8 @@ static void si_init_pg(struct radeon_device *rdev)
 static void si_fini_pg(struct radeon_device *rdev)
 {
 	if (rdev->pg_flags) {
-		if (rdev->pg_flags & RADEON_PG_SUPPORT_SDMA)
-			si_enable_dma_pg(rdev, false);
-		if (rdev->pg_flags & RADEON_PG_SUPPORT_GFX_CG)
-			si_enable_gfx_cgpg(rdev, false);
+		si_enable_dma_pg(rdev, false);
+		si_enable_gfx_cgpg(rdev, false);
 	}
 }