drm/amdgpu:Add DPG mode read/write macro

Some registers read/write needs program through SDRAM pool under
DPG mode.
Signed-off-by: James Zhu <James.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/soc15_common.h

@@ -64,6 +64,26 @@
 		}						\
 	} while (0)
 
+#define RREG32_SOC15_DPG_MODE(ip, inst, reg, mask, sram_sel) 	\
+		({ WREG32_SOC15(ip, inst, mmUVD_DPG_LMA_MASK, mask); \
+			WREG32_SOC15(ip, inst, mmUVD_DPG_LMA_CTL,	\
+				UVD_DPG_LMA_CTL__MASK_EN_MASK |				\
+				((adev->reg_offset[ip##_HWIP][inst][reg##_BASE_IDX] + reg) \
+				<< UVD_DPG_LMA_CTL__READ_WRITE_ADDR__SHIFT) | \
+				(sram_sel << UVD_DPG_LMA_CTL__SRAM_SEL__SHIFT));	\
+			RREG32_SOC15(ip, inst, mmUVD_DPG_LMA_DATA); })
+
+#define WREG32_SOC15_DPG_MODE(ip, inst, reg, value, mask, sram_sel)	\
+	do {							\
+		WREG32_SOC15(ip, inst, mmUVD_DPG_LMA_DATA, value);	\
+		WREG32_SOC15(ip, inst, mmUVD_DPG_LMA_MASK, mask);		\
+		WREG32_SOC15(ip, inst, mmUVD_DPG_LMA_CTL,	\
+			UVD_DPG_LMA_CTL__READ_WRITE_MASK |	\
+			((adev->reg_offset[ip##_HWIP][inst][reg##_BASE_IDX] + reg) \
+			<< UVD_DPG_LMA_CTL__READ_WRITE_ADDR__SHIFT) |	\
+			(sram_sel << UVD_DPG_LMA_CTL__SRAM_SEL__SHIFT)); \
+	} while (0)
+
 #endif