drm/amdgpu: differentiate between LP and non-LP DDR memory

Some applications want to know whether the memory is LP or
not.
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -188,13 +188,17 @@ static int convert_atom_mem_type_to_vram_type(struct amdgpu_device *adev,
 			vram_type = AMDGPU_VRAM_TYPE_DDR3;
 			break;
 		case Ddr4MemType:
-		case LpDdr4MemType:
 			vram_type = AMDGPU_VRAM_TYPE_DDR4;
 			break;
+		case LpDdr4MemType:
+			vram_type = AMDGPU_VRAM_TYPE_LPDDR4;
+			break;
 		case Ddr5MemType:
-		case LpDdr5MemType:
 			vram_type = AMDGPU_VRAM_TYPE_DDR5;
 			break;
+		case LpDdr5MemType:
+			vram_type = AMDGPU_VRAM_TYPE_LPDDR5;
+			break;
 		default:
 			vram_type = AMDGPU_VRAM_TYPE_UNKNOWN;
 			break;

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

@@ -1018,7 +1018,9 @@ static const char *amdgpu_vram_names[] = {
 	"DDR3",
 	"DDR4",
 	"GDDR6",
-	"DDR5"
+	"DDR5",
+	"LPDDR4",
+	"LPDDR5"
 };
 
 /**

include/uapi/drm/amdgpu_drm.h

@@ -988,6 +988,8 @@ struct drm_amdgpu_info_vbios {
 #define AMDGPU_VRAM_TYPE_DDR4  8
 #define AMDGPU_VRAM_TYPE_GDDR6 9
 #define AMDGPU_VRAM_TYPE_DDR5  10
+#define AMDGPU_VRAM_TYPE_LPDDR4 11
+#define AMDGPU_VRAM_TYPE_LPDDR5 12
 
 struct drm_amdgpu_info_device {
 	/** PCI Device ID */