drm/amd/powerplay: fix PSI feature on Polars12.

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>

drivers/gpu/drm/amd/powerplay/hwmgr/ppatomctrl.c

@@ -1396,3 +1396,25 @@ int atomctrl_get_avfs_information(struct pp_hwmgr *hwmgr,
 
 	return 0;
 }
+
+int  atomctrl_get_svi2_info(struct pp_hwmgr *hwmgr, uint8_t voltage_type,
+				uint8_t *svd_gpio_id, uint8_t *svc_gpio_id,
+				uint16_t *load_line)
+{
+	ATOM_VOLTAGE_OBJECT_INFO_V3_1 *voltage_info =
+		(ATOM_VOLTAGE_OBJECT_INFO_V3_1 *)get_voltage_info_table(hwmgr->device);
+
+	const ATOM_VOLTAGE_OBJECT_V3 *voltage_object;
+
+	PP_ASSERT_WITH_CODE((NULL != voltage_info),
+			"Could not find Voltage Table in BIOS.", return -EINVAL);
+
+	voltage_object = atomctrl_lookup_voltage_type_v3
+		(voltage_info, voltage_type,  VOLTAGE_OBJ_SVID2);
+
+	*svd_gpio_id = voltage_object->asSVID2Obj.ucSVDGpioId;
+	*svc_gpio_id = voltage_object->asSVID2Obj.ucSVCGpioId;
+	*load_line = voltage_object->asSVID2Obj.usLoadLine_PSI;
+
+	return 0;
+}

drivers/gpu/drm/amd/powerplay/hwmgr/ppatomctrl.h

@@ -311,5 +311,8 @@ extern int atomctrl_get_smc_sclk_range_table(struct pp_hwmgr *hwmgr, struct pp_a
 
 extern int atomctrl_get_avfs_information(struct pp_hwmgr *hwmgr, struct pp_atom_ctrl__avfs_parameters *param);
 
+extern int  atomctrl_get_svi2_info(struct pp_hwmgr *hwmgr, uint8_t voltage_type,
+				uint8_t *svd_gpio_id, uint8_t *svc_gpio_id,
+				uint16_t *load_line);
 #endif
 

drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c

@@ -1383,6 +1383,15 @@ static void smu7_init_dpm_defaults(struct pp_hwmgr *hwmgr)
 	data->force_pcie_gen = PP_PCIEGenInvalid;
 	data->ulv_supported = hwmgr->feature_mask & PP_ULV_MASK ? true : false;
 
+	if (hwmgr->chip_id == CHIP_POLARIS12 || hwmgr->smumgr->is_kicker) {
+		uint8_t tmp1, tmp2;
+		uint16_t tmp3 = 0;
+		atomctrl_get_svi2_info(hwmgr, VOLTAGE_TYPE_VDDC, &tmp1, &tmp2,
+						&tmp3);
+		tmp3 = (tmp3 >> 5) & 0x3;
+		data->vddc_phase_shed_control = ((tmp3 << 1) | (tmp3 >> 1)) & 0x3;
+	}
+
 	data->fast_watermark_threshold = 100;
 	if (atomctrl_is_voltage_controled_by_gpio_v3(hwmgr,
 			VOLTAGE_TYPE_VDDC, VOLTAGE_OBJ_SVID2))

drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.h

@@ -268,7 +268,7 @@ struct smu7_hwmgr {
 	uint32_t                       fast_watermark_threshold;
 
 	/* ---- Phase Shedding ---- */
-	bool                           vddc_phase_shed_control;
+	uint8_t                           vddc_phase_shed_control;
 
 	/* ---- DI/DT ---- */
 	struct smu7_display_timing        display_timing;

drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smc.c

@@ -503,7 +503,7 @@ static int polaris10_populate_ulv_level(struct pp_hwmgr *hwmgr,
 	state->VddcOffsetVid = (uint8_t)(table_info->us_ulv_voltage_offset *
 			VOLTAGE_VID_OFFSET_SCALE2 / VOLTAGE_VID_OFFSET_SCALE1);
 
-	if (smumgr->is_kicker)
+	if (smumgr->chip_id == CHIP_POLARIS12 || smumgr->is_kicker)
 		state->VddcPhase = data->vddc_phase_shed_control ^ 0x3;
 	else
 		state->VddcPhase = (data->vddc_phase_shed_control) ? 0 : 1;