drm/amd/powerplay: get system info by cgs interface.

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

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c
index 98e01d1..9831871 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c
@@ -3119,11 +3119,27 @@ int polaris10_patch_voltage_workaround(struct pp_hwmgr *hwmgr)
        struct phm_ppt_v1_voltage_lookup_table *lookup_table =
                        table_info->vddc_lookup_table;
        uint32_t i;
+       uint32_t hw_revision, sub_vendor_id, sub_sys_id;
+       struct cgs_system_info sys_info = {0};
 
-       if (hwmgr->chip_id == CHIP_POLARIS10 && hwmgr->hw_revision == 0xC7 &&
-                       ((hwmgr->sub_sys_id == 0xb37 && hwmgr->sub_vendor_id == 0x1002) ||
-                   (hwmgr->sub_sys_id == 0x4a8 && hwmgr->sub_vendor_id == 0x1043) ||
-                   (hwmgr->sub_sys_id == 0x9480 && hwmgr->sub_vendor_id == 0x1682))) {
+       sys_info.size = sizeof(struct cgs_system_info);
+
+       sys_info.info_id = CGS_SYSTEM_INFO_PCIE_REV;
+       cgs_query_system_info(hwmgr->device, &sys_info);
+       hw_revision = (uint32_t)sys_info.value;
+
+       sys_info.info_id = CGS_SYSTEM_INFO_PCIE_SUB_SYS_ID;
+       cgs_query_system_info(hwmgr->device, &sys_info);
+       sub_sys_id = (uint32_t)sys_info.value;
+
+       sys_info.info_id = CGS_SYSTEM_INFO_PCIE_SUB_SYS_VENDOR_ID;
+       cgs_query_system_info(hwmgr->device, &sys_info);
+       sub_vendor_id = (uint32_t)sys_info.value;
+
+       if (hwmgr->chip_id == CHIP_POLARIS10 && hw_revision == 0xC7 &&
+                       ((sub_sys_id == 0xb37 && sub_vendor_id == 0x1002) ||
+                   (sub_sys_id == 0x4a8 && sub_vendor_id == 0x1043) ||
+                   (sub_sys_id == 0x9480 && sub_vendor_id == 0x1682))) {
                if (lookup_table->entries[dep_mclk_table->entries[dep_mclk_table->count-1].vddInd].us_vdd >= 1000)
                        return 0;