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

[Rex Zhu]

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.

Change-Id: Ifce41405c0369610985881cea26e14b0525e4d25
Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c          |  2 ++
 drivers/gpu/drm/amd/powerplay/smumgr/cz_smumgr.c | 13 +++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
index 13607e2..4466f35 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
+++ b/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;
diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/cz_smumgr.c b/drivers/gpu/drm/amd/powerplay/smumgr/cz_smumgr.c
index 78ab055..4d3aff3 100644
--- a/drivers/gpu/drm/amd/powerplay/smumgr/cz_smumgr.c
+++ b/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 |
-- 
1.9.1