drm/amdgpu: fix vram type and bandwidth error for DDR5 and DDR4

This patch is to update atomfirmware parser for the memory type and
bandwidth of DDR5 and DDR4.
Signed-off-by: NHuang Rui <ray.huang@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c

@@ -112,6 +112,7 @@ int amdgpu_atomfirmware_allocate_fb_scratch(struct amdgpu_device *adev)
 union igp_info {
 	struct atom_integrated_system_info_v1_11 v11;
 	struct atom_integrated_system_info_v1_12 v12;
+	struct atom_integrated_system_info_v2_1 v21;
 };
 
 union umc_info {
@@ -209,9 +210,14 @@ amdgpu_atomfirmware_get_vram_info(struct amdgpu_device *adev,
 		if (adev->flags & AMD_IS_APU) {
 			igp_info = (union igp_info *)
 				(mode_info->atom_context->bios + data_offset);
+			switch (frev) {
+			case 1:
 				switch (crev) {
 				case 11:
+				case 12:
 					mem_channel_number = igp_info->v11.umachannelnumber;
+					if (!mem_channel_number)
+						mem_channel_number = 1;
 					/* channel width is 64 */
 					if (vram_width)
 						*vram_width = mem_channel_number * 64;
@@ -219,18 +225,31 @@ amdgpu_atomfirmware_get_vram_info(struct amdgpu_device *adev,
 					if (vram_type)
 						*vram_type = convert_atom_mem_type_to_vram_type(adev, mem_type);
 					break;
-			case 12:
-				mem_channel_number = igp_info->v12.umachannelnumber;
+				default:
+					return -EINVAL;
+				}
+				break;
+			case 2:
+				switch (crev) {
+				case 1:
+				case 2:
+					mem_channel_number = igp_info->v21.umachannelnumber;
+					if (!mem_channel_number)
+						mem_channel_number = 1;
 					/* channel width is 64 */
 					if (vram_width)
 						*vram_width = mem_channel_number * 64;
-				mem_type = igp_info->v12.memorytype;
+					mem_type = igp_info->v21.memorytype;
 					if (vram_type)
 						*vram_type = convert_atom_mem_type_to_vram_type(adev, mem_type);
 					break;
 				default:
 					return -EINVAL;
 				}
+				break;
+			default:
+				return -EINVAL;
+			}
 		} else {
 			vram_info = (union vram_info *)
 				(mode_info->atom_context->bios + data_offset);