1 // SPDX-License-Identifier: GPL-2.0-only
11  * that none of the code has been re-used, it's a complete re-implementation
20  * with one sensor and one fan. Slots area is a bit different as the Darwin
22  * involves the presence of an AGP sensor and an AGP fan (possibly on the
24  * access to those additional sensor/fans for now (though ultimately, it would
25  * be possible to add sensor objects for them) so I'm only implementing the
166 		tmax = ((s32)fvt->maxtemp) << 16;  in wf_smu_create_cpu_fans()
175        	wf_smu_cpu_fans->ticks = 1;  in wf_smu_create_cpu_fans()
179 	pid_param.history_len = piddata->history_len;  in wf_smu_create_cpu_fans()
182 		       "CPU control loop (%d)\n", piddata->history_len);  in wf_smu_create_cpu_fans()
185 	pid_param.gd = piddata->gd;  in wf_smu_create_cpu_fans()
186 	pid_param.gp = piddata->gp;  in wf_smu_create_cpu_fans()
187 	pid_param.gr = piddata->gr / pid_param.history_len;  in wf_smu_create_cpu_fans()
189 	tdelta = ((s32)piddata->target_temp_delta) << 16;  in wf_smu_create_cpu_fans()
190 	maxpow = ((s32)piddata->max_power) << 16;  in wf_smu_create_cpu_fans()
191 	powadj = ((s32)piddata->power_adj) << 16;  in wf_smu_create_cpu_fans()
194 	pid_param.ttarget = tmax - tdelta;  in wf_smu_create_cpu_fans()
195 	pid_param.pmaxadj = maxpow - powadj;  in wf_smu_create_cpu_fans()
200 	wf_cpu_pid_init(&wf_smu_cpu_fans->pid, &pid_param);  in wf_smu_create_cpu_fans()
221 	s32 new_setpoint, temp, power;  in wf_smu_cpu_fans_tick()  local
224 	if (--st->ticks != 0) {  in wf_smu_cpu_fans_tick()
229 	st->ticks = WF_SMU_CPU_FANS_INTERVAL;  in wf_smu_cpu_fans_tick()
231 	rc = wf_sensor_get(sensor_cpu_temp, &temp);  in wf_smu_cpu_fans_tick()
233 		printk(KERN_WARNING "windfarm: CPU temp sensor error %d\n",  in wf_smu_cpu_fans_tick()
241 		printk(KERN_WARNING "windfarm: CPU power sensor error %d\n",  in wf_smu_cpu_fans_tick()
247 	DBG("wf_smu: CPU Fans tick ! CPU temp: %d.%03d, power: %d.%03d\n",  in wf_smu_cpu_fans_tick()
248 	    FIX32TOPRINT(temp), FIX32TOPRINT(power));  in wf_smu_cpu_fans_tick()
251 	if (temp > 0x4a0000)  in wf_smu_cpu_fans_tick()
254 	if (temp > st->pid.param.tmax)  in wf_smu_cpu_fans_tick()
257 	new_setpoint = wf_cpu_pid_run(&st->pid, power, temp);  in wf_smu_cpu_fans_tick()
261 	if (st->cpu_setpoint == new_setpoint)  in wf_smu_cpu_fans_tick()
263 	st->cpu_setpoint = new_setpoint;  in wf_smu_cpu_fans_tick()
266 		rc = wf_control_set(fan_cpu_main, st->cpu_setpoint);  in wf_smu_cpu_fans_tick()
274 		rc = wf_control_set(fan_cpu_second, st->cpu_setpoint);  in wf_smu_cpu_fans_tick()
282 		rc = wf_control_set(fan_cpu_third, st->cpu_setpoint);  in wf_smu_cpu_fans_tick()
310        	wf_smu_drive_fans->ticks = 1;  in wf_smu_create_drive_fans()
313 	param.additive = (fan_hd->type == WF_CONTROL_RPM_FAN);  in wf_smu_create_drive_fans()
316 	wf_pid_init(&wf_smu_drive_fans->pid, &param);  in wf_smu_create_drive_fans()
330 	s32 new_setpoint, temp;  in wf_smu_drive_fans_tick()  local
333 	if (--st->ticks != 0) {  in wf_smu_drive_fans_tick()
338 	st->ticks = st->pid.param.interval;  in wf_smu_drive_fans_tick()
340 	rc = wf_sensor_get(sensor_hd_temp, &temp);  in wf_smu_drive_fans_tick()
342 		printk(KERN_WARNING "windfarm: HD temp sensor error %d\n",  in wf_smu_drive_fans_tick()
348 	DBG("wf_smu: Drive Fans tick ! HD temp: %d.%03d\n",  in wf_smu_drive_fans_tick()
349 	    FIX32TOPRINT(temp));  in wf_smu_drive_fans_tick()
351 	if (temp > (st->pid.param.itarget + 0x50000))  in wf_smu_drive_fans_tick()
354 	new_setpoint = wf_pid_run(&st->pid, temp);  in wf_smu_drive_fans_tick()
358 	if (st->setpoint == new_setpoint)  in wf_smu_drive_fans_tick()
360 	st->setpoint = new_setpoint;  in wf_smu_drive_fans_tick()
363 		rc = wf_control_set(fan_hd, st->setpoint);  in wf_smu_drive_fans_tick()
391        	wf_smu_slots_fans->ticks = 1;  in wf_smu_create_slots_fans()
394 	param.additive = (fan_slots->type == WF_CONTROL_RPM_FAN);  in wf_smu_create_slots_fans()
397 	wf_pid_init(&wf_smu_slots_fans->pid, &param);  in wf_smu_create_slots_fans()
414 	if (--st->ticks != 0) {  in wf_smu_slots_fans_tick()
419 	st->ticks = st->pid.param.interval;  in wf_smu_slots_fans_tick()
423 		printk(KERN_WARNING "windfarm: Slots power sensor error %d\n",  in wf_smu_slots_fans_tick()
433 	if (power > (st->pid.param.itarget + 0x50000))  in wf_smu_slots_fans_tick()
437 	new_setpoint = wf_pid_run(&st->pid, power);  in wf_smu_slots_fans_tick()
441 	if (st->setpoint == new_setpoint)  in wf_smu_slots_fans_tick()
443 	st->setpoint = new_setpoint;  in wf_smu_slots_fans_tick()
446 		rc = wf_control_set(fan_slots, st->setpoint);  in wf_smu_slots_fans_tick()
475 	if (wf_smu_skipping && --wf_smu_skipping)  in wf_smu_tick()
526 	 * _and_ no other failure is present. Since a sensor error will  in wf_smu_tick()
543 	if (fan_cpu_main == NULL && !strcmp(ct->name, "cpu-rear-fan-0")) {  in wf_smu_new_control()
548 	if (fan_cpu_second == NULL && !strcmp(ct->name, "cpu-rear-fan-1")) {  in wf_smu_new_control()
553 	if (fan_cpu_third == NULL && !strcmp(ct->name, "cpu-front-fan-0")) {  in wf_smu_new_control()
558 	if (cpufreq_clamp == NULL && !strcmp(ct->name, "cpufreq-clamp")) {  in wf_smu_new_control()
563 	if (fan_hd == NULL && !strcmp(ct->name, "drive-bay-fan")) {  in wf_smu_new_control()
568 	if (fan_slots == NULL && !strcmp(ct->name, "slots-fan")) {  in wf_smu_new_control()
583 	if (sensor_cpu_power == NULL && !strcmp(sr->name, "cpu-power")) {  in wf_smu_new_sensor()
588 	if (sensor_cpu_temp == NULL && !strcmp(sr->name, "cpu-temp")) {  in wf_smu_new_sensor()
593 	if (sensor_hd_temp == NULL && !strcmp(sr->name, "hd-temp")) {  in wf_smu_new_sensor()
598 	if (sensor_slots_power == NULL && !strcmp(sr->name, "slots-power")) {  in wf_smu_new_sensor()
615 		    ((struct wf_control *)data)->name);  in wf_smu_notify()
620 		DBG("wf: new sensor %s detected\n",  in wf_smu_notify()
621 		    ((struct wf_sensor *)data)->name);  in wf_smu_notify()
662 	 * that the attribute callback won't race with the sensor beeing  in wf_smu_remove()
707 	int rc = -ENODEV;  in wf_smu_init()