1 // SPDX-License-Identifier: GPL-2.0-only
3  * Windfarm PowerMac thermal control.
99 #define LOW_OVER_CLEAR		((-10) << 16)
167 	cpu_thist_total -= t_old;  in cpu_check_overtemp()
193 		/* High overtemp -> immediate shutdown */  in cpu_check_overtemp()
213 	/* Get diode temperature */  in read_one_cpu_vals()
217 		return -EIO;  in read_one_cpu_vals()
226 		return -EIO;  in read_one_cpu_vals()
234 		return -EIO;  in read_one_cpu_vals()
262 		wf_control_get(cpu_rear_fans[cpu], &sp->target);  in cpu_fans_tick_split()
264 		DBG_LOTS("  CPU%d: cur_target = %d RPM\n", cpu, sp->target);  in cpu_fans_tick_split()
283 		DBG_LOTS("  CPU%d: target = %d RPM\n", cpu, sp->target);  in cpu_fans_tick_split()
286 		err = wf_control_set(cpu_rear_fans[cpu], sp->target);  in cpu_fans_tick_split()
289 				cpu_rear_fans[cpu]->name, err);  in cpu_fans_tick_split()
295 		intake = (sp->target * CPU_INTAKE_SCALE) >> 16;  in cpu_fans_tick_split()
300 				cpu_front_fans[cpu]->name, err);  in cpu_fans_tick_split()
318 	wf_control_get(cpu_rear_fans[0], &sp->target);  in cpu_fans_tick_combined()
320 	DBG_LOTS("  CPUs: cur_target = %d RPM\n", sp->target);  in cpu_fans_tick_combined()
351 	intake = (sp->target * CPU_INTAKE_SCALE) >> 16;  in cpu_fans_tick_combined()
360 	pump = (sp->target * wf_control_get_max(pump0)) /  in cpu_fans_tick_combined()
361 		cpu_mpu_data[0]->rmaxn_exhaust_fan;  in cpu_fans_tick_combined()
363 	DBG_LOTS("  CPUs: target = %d RPM\n", sp->target);  in cpu_fans_tick_combined()
368 		err = wf_control_set(cpu_rear_fans[cpu], sp->target);  in cpu_fans_tick_combined()
371 				cpu_rear_fans[cpu]->name, err);  in cpu_fans_tick_combined()
377 				cpu_front_fans[cpu]->name, err);  in cpu_fans_tick_combined()
385 				cpu_pumps[cpu]->name, err);  in cpu_fans_tick_combined()
400 	tmax = mpu->tmax << 16;  in cpu_setup_pid()
401 	ttarget = mpu->ttarget << 16;  in cpu_setup_pid()
402 	ptarget = ((s32)(mpu->pmaxh - mpu->padjmax)) << 16;  in cpu_setup_pid()
417 	hsize = min_t(int, mpu->tguardband, WF_PID_MAX_HISTORY);  in cpu_setup_pid()
423 	pid.gd		= mpu->pid_gd;  in cpu_setup_pid()
424 	pid.gp		= mpu->pid_gp;  in cpu_setup_pid()
425 	pid.gr		= mpu->pid_gr;  in cpu_setup_pid()
471 	if (--backside_tick > 0)  in backside_fan_tick()
513 		const u32 *vers = of_get_property(u3, "device-rev", NULL);  in backside_setup_pid()
551 	if (--drives_tick > 0)  in drives_fan_tick()
674 	if (!strcmp(ct->name, "cpu-front-fan-0"))  in pm72_new_control()
676 	else if (!strcmp(ct->name, "cpu-front-fan-1"))  in pm72_new_control()
678 	else if (!strcmp(ct->name, "cpu-rear-fan-0"))  in pm72_new_control()
680 	else if (!strcmp(ct->name, "cpu-rear-fan-1"))  in pm72_new_control()
682 	else if (!strcmp(ct->name, "cpu-pump-0"))  in pm72_new_control()
684 	else if (!strcmp(ct->name, "cpu-pump-1"))  in pm72_new_control()
686 	else if (!strcmp(ct->name, "backside-fan"))  in pm72_new_control()
688 	else if (!strcmp(ct->name, "slots-fan"))  in pm72_new_control()
690 	else if (!strcmp(ct->name, "drive-bay-fan"))  in pm72_new_control()
692 	else if (!strcmp(ct->name, "cpufreq-clamp"))  in pm72_new_control()
719 	if (!strcmp(sr->name, "cpu-diode-temp-0"))  in pm72_new_sensor()
721 	else if (!strcmp(sr->name, "cpu-diode-temp-1"))  in pm72_new_sensor()
723 	else if (!strcmp(sr->name, "cpu-voltage-0"))  in pm72_new_sensor()
725 	else if (!strcmp(sr->name, "cpu-voltage-1"))  in pm72_new_sensor()
727 	else if (!strcmp(sr->name, "cpu-current-0"))  in pm72_new_sensor()
729 	else if (!strcmp(sr->name, "cpu-current-1"))  in pm72_new_sensor()
731 	else if (!strcmp(sr->name, "backside-temp"))  in pm72_new_sensor()
733 	else if (!strcmp(sr->name, "hd-temp"))  in pm72_new_sensor()
798 		return -ENODEV;  in wf_pm72_init()
815 			return -ENXIO;  in wf_pm72_init()
840 MODULE_DESCRIPTION("Thermal control for AGP PowerMac G5s");