1 // SPDX-License-Identifier: GPL-2.0-only
3  * Windfarm PowerMac thermal control. SMU based sensors
82 		return -EIO;  in smu_read_adc()
95 	rc = smu_read_adc(ads->reg, &val);  in smu_cputemp_get()
103 	scaled = (s64)(((u64)val) * (u64)cpudiode->m_value);  in smu_cputemp_get()
105 	scaled += ((s64)cpudiode->b_value) << 9;  in smu_cputemp_get()
117 	rc = smu_read_adc(ads->reg, &val);  in smu_cpuamp_get()
125 	scaled = (s32)(val * (u32)cpuvcp->curr_scale);  in smu_cpuamp_get()
126 	scaled += (s32)cpuvcp->curr_offset;  in smu_cpuamp_get()
138 	rc = smu_read_adc(ads->reg, &val);  in smu_cpuvolt_get()
146 	scaled = (s32)(val * (u32)cpuvcp->volt_scale);  in smu_cpuvolt_get()
147 	scaled += (s32)cpuvcp->volt_offset;  in smu_cpuvolt_get()
159 	rc = smu_read_adc(ads->reg, &val);  in smu_slotspow_get()
167 	scaled = (s32)(val * (u32)slotspow->pow_scale);  in smu_slotspow_get()
168 	scaled += (s32)slotspow->pow_offset;  in smu_slotspow_get()
211 	 * properties, while Darwin uses the sensor-id's.  in smu_ads_create()
217 	if (of_node_is_type(node, "temp-sensor") &&  in smu_ads_create()
218 	    !strcmp(l, "CPU T-Diode")) {  in smu_ads_create()
219 		ads->sens.ops = &smu_cputemp_ops;  in smu_ads_create()
220 		ads->sens.name = "cpu-temp";  in smu_ads_create()
226 	} else if (of_node_is_type(node, "current-sensor") &&  in smu_ads_create()
228 		ads->sens.ops = &smu_cpuamp_ops;  in smu_ads_create()
229 		ads->sens.name = "cpu-current";  in smu_ads_create()
235 	} else if (of_node_is_type(node, "voltage-sensor") &&  in smu_ads_create()
237 		ads->sens.ops = &smu_cpuvolt_ops;  in smu_ads_create()
238 		ads->sens.name = "cpu-voltage";  in smu_ads_create()
244 	} else if (of_node_is_type(node, "power-sensor") &&  in smu_ads_create()
246 		ads->sens.ops = &smu_slotspow_ops;  in smu_ads_create()
247 		ads->sens.name = "slots-power";  in smu_ads_create()
259 	ads->reg = *v;  in smu_ads_create()
261 	if (wf_register_sensor(&ads->sens))  in smu_ads_create()
289 	if (pow->volts)  in smu_cpu_power_release()
290 		wf_put_sensor(pow->volts);  in smu_cpu_power_release()
291 	if (pow->amps)  in smu_cpu_power_release()
292 		wf_put_sensor(pow->amps);  in smu_cpu_power_release()
303 	rc = pow->amps->ops->get_value(pow->amps, &amps);  in smu_cpu_power_get()
307 	if (pow->fake_volts) {  in smu_cpu_power_get()
308 		*value = amps * 12 - 0x30000;  in smu_cpu_power_get()
312 	rc = pow->volts->ops->get_value(pow->volts, &volts);  in smu_cpu_power_get()
317 	if (!pow->quadratic) {  in smu_cpu_power_get()
322 	tmpa = ((u64)cpuvcp->power_quads[0]) * tmps;  in smu_cpu_power_get()
323 	tmpb = ((u64)cpuvcp->power_quads[1]) * ((u64)power);  in smu_cpu_power_get()
324 	*value = (tmpa >> 28) + (tmpb >> 28) + (cpuvcp->power_quads[2] >> 12);  in smu_cpu_power_get()
344 	pow->sens.ops = &smu_cpu_power_ops;  in smu_cpu_power_create()
345 	pow->sens.name = "cpu-power";  in smu_cpu_power_create()
348 	pow->volts = volts;  in smu_cpu_power_create()
350 	pow->amps = amps;  in smu_cpu_power_create()
356 		pow->fake_volts = 1;  in smu_cpu_power_create()
358 		pow->fake_volts = 0;  in smu_cpu_power_create()
368 		pow->quadratic = 1;  in smu_cpu_power_create()
371 		pow->quadratic = 0;  in smu_cpu_power_create()
373 	if (wf_register_sensor(&pow->sens))  in smu_cpu_power_create()
390 		cpuvcp_version = hdr->version;  in smu_fetch_param_partitions()
393 	/* Get CPU diode calibration data */  in smu_fetch_param_partitions()
415 		return -ENODEV;  in smu_sensors_init()
422 		return -ENODEV;  in smu_sensors_init()
439 		list_add(&ads->link, &smu_ads);  in smu_sensors_init()
441 		if (!strcmp(ads->sens.name, "cpu-voltage"))  in smu_sensors_init()
443 		else if (!strcmp(ads->sens.name, "cpu-current"))  in smu_sensors_init()
451 		smu_cpu_power = smu_cpu_power_create(&volt_sensor->sens,  in smu_sensors_init()
452 						     &curr_sensor->sens);  in smu_sensors_init()
463 		wf_unregister_sensor(&smu_cpu_power->sens);  in smu_sensors_exit()
468 		list_del(&ads->link);  in smu_sensors_exit()
469 		wf_unregister_sensor(&ads->sens);  in smu_sensors_exit()
478 MODULE_DESCRIPTION("SMU sensor objects for PowerMacs thermal control");