drm/amd/pm: setup zero rpm parameters for polaris10

Only if the ZeroRPM feature is supported.

Signed-off-by: Evan Quan <[e-mail]>
Acked-by: Alex Deucher <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/pm/inc/smu7_ppsmc.h

···
 
 #define PPSMC_MSG_SetGpuPllDfsForSclk         ((uint16_t) 0x300)
 #define PPSMC_MSG_Didt_Block_Function		  ((uint16_t) 0x301)
+#define PPSMC_MSG_EnableZeroRpm               ((uint16_t) 0x302)
 
 #define PPSMC_MSG_SetVBITimeout               ((uint16_t) 0x306)
 

drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_thermal.c

···
 				hwmgr->thermal_controller.
 				advanceFanControlParameters.ucTargetTemperature,
 				NULL);
+
+	if (!result &&
+	    (hwmgr->chip_id == CHIP_POLARIS10 ||
+	    hwmgr->chip_id == CHIP_POLARIS11 ||
+	    hwmgr->chip_id == CHIP_POLARIS12) &&
+	    hwmgr->thermal_controller.advanceFanControlParameters.ucEnableZeroRPM &&
+	    !PP_CAP(PHM_PlatformCaps_customThermalManagement))
+		result = smum_send_msg_to_smc(hwmgr,
+				PPSMC_MSG_EnableZeroRpm,
+				NULL);
+
 	hwmgr->fan_ctrl_enabled = true;
 
 	return result;

drivers/gpu/drm/amd/pm/powerplay/smumgr/polaris10_smumgr.c

···
 	return 0;
 }
 
+static void polaris10_populate_zero_rpm_parameters(struct pp_hwmgr *hwmgr)
+{
+	struct polaris10_smumgr *smu_data = (struct polaris10_smumgr *)(hwmgr->smu_backend);
+	SMU74_Discrete_DpmTable  *table = &(smu_data->smc_state_table);
+	uint16_t fan_stop_temp =
+		((uint16_t)hwmgr->thermal_controller.advanceFanControlParameters.ucFanStopTemperature) << 8;
+	uint16_t fan_start_temp =
+		((uint16_t)hwmgr->thermal_controller.advanceFanControlParameters.ucFanStartTemperature) << 8;
+
+	if (hwmgr->thermal_controller.advanceFanControlParameters.ucEnableZeroRPM) {
+		table->FanStartTemperature = PP_HOST_TO_SMC_US(fan_start_temp);
+		table->FanStopTemperature = PP_HOST_TO_SMC_US(fan_stop_temp);
+	}
+}
+
 static int polaris10_populate_svi_load_line(struct pp_hwmgr *hwmgr)
 {
 	struct polaris10_smumgr *smu_data = (struct polaris10_smumgr *)(hwmgr->smu_backend);
···
 	result = polaris10_populate_bapm_parameters_in_dpm_table(hwmgr);
 	PP_ASSERT_WITH_CODE(0 == result,
 			"Failed to populate BAPM Parameters!", return result);
+
+	polaris10_populate_zero_rpm_parameters(hwmgr);
 
 	if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps,
 			PHM_PlatformCaps_ClockStretcher)) {