drm/amd/pp: Get and save CZ/ST smu version

The smu firmware is loaded by the sbios on APUs, so query it
from the smu and save the smu fw version info that is reported
to userspace.

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

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

@@ -801,6 +801,8 @@ static int amdgpu_cgs_get_firmware_info(struct cgs_device *cgs_device,
 				else
 					strcpy(fw_name, "amdgpu/vega10_smc.bin");
 				break;
+			case CHIP_CARRIZO:
+			case CHIP_STONEY:
 			case CHIP_RAVEN:
 				adev->pm.fw_version = info->version;
 				return 0;

drivers/gpu/drm/amd/powerplay/smumgr/cz_smumgr.c

@@ -709,6 +709,19 @@ static int cz_start_smu(struct pp_hwmgr *hwmgr)
 {
 	int ret = 0;
 	uint32_t fw_to_check = 0;
+	struct cgs_firmware_info info = {0};
+	uint32_t index = SMN_MP1_SRAM_START_ADDR +
+			 SMU8_FIRMWARE_HEADER_LOCATION +
+			 offsetof(struct SMU8_Firmware_Header, Version);
+
+
+	if (hwmgr == NULL || hwmgr->device == NULL)
+		return -EINVAL;
+
+	cgs_write_register(hwmgr->device, mmMP0PUB_IND_INDEX, index);
+	hwmgr->smu_version = cgs_read_register(hwmgr->device, mmMP0PUB_IND_DATA);
+	info.version = hwmgr->smu_version >> 8;
+	cgs_get_firmware_info(hwmgr->device, CGS_UCODE_ID_SMU, &info);
 
 	fw_to_check = UCODE_ID_RLC_G_MASK |
 			UCODE_ID_SDMA0_MASK |