1 // SPDX-License-Identifier: GPL-2.0-only
11  * that none of the code has been re-used, it's a complete re-implementation
24  *  - the linked control (second control) gets the target value as-is
26  *  - the main control (first control) gets the target value scaled with
28  *  - the value of the target of the CPU Fan control loop is retrieved,
33  *   controls       : system-fan, drive-bay-fan
34  *   sensors        : hd-temp
41  *   linear-factors : offset = 0xff38 scale  = 0x0ccd
45  *   controls       : system-fan, drive-bay-fan
46  *   sensors        : hd-temp
53  *   linear-factors : offset = 0xff38 scale  = 0x0ccd
57  *   controls       : system-fan
58  *   sensors        : hd-temp
65  *   linear-factors : offset = 0x0000 scale  = 0x1000
74  *   controls       : cpu-fan
75  *   sensors        : cpu-temp cpu-power
77  *   linear-factors : offset = 0xfb50 scale  = 0x1000
293 	wf_smu_sys_fans->ticks = 1;  in wf_smu_create_sys_fans()
294 	wf_smu_sys_fans->scale0 = param->scale0;  in wf_smu_create_sys_fans()
295 	wf_smu_sys_fans->offset0 = param->offset0;  in wf_smu_create_sys_fans()
296 	wf_smu_sys_fans->scale1 = param->scale1;  in wf_smu_create_sys_fans()
297 	wf_smu_sys_fans->offset1 = param->offset1;  in wf_smu_create_sys_fans()
300 	pid_param.gd = param->gd;  in wf_smu_create_sys_fans()
301 	pid_param.gp = param->gp;  in wf_smu_create_sys_fans()
302 	pid_param.gr = param->gr;  in wf_smu_create_sys_fans()
305 	pid_param.itarget = param->itarget;  in wf_smu_create_sys_fans()
306 	pid_param.min = wf_control_get_min(fan_system);  in wf_smu_create_sys_fans()
309 		pid_param.min =  in wf_smu_create_sys_fans()
310 			max(pid_param.min, wf_control_get_min(fan_hd));  in wf_smu_create_sys_fans()
312 			min(pid_param.max, wf_control_get_max(fan_hd));  in wf_smu_create_sys_fans()
314 	wf_pid_init(&wf_smu_sys_fans->pid, &pid_param);  in wf_smu_create_sys_fans()
317 	DBG("    itarged=%d.%03d, min=%d RPM, max=%d RPM\n",  in wf_smu_create_sys_fans()
318 	    FIX32TOPRINT(pid_param.itarget), pid_param.min, pid_param.max);  in wf_smu_create_sys_fans()
334 	if (--st->ticks != 0) {  in wf_smu_sys_fans_tick()
339 	st->ticks = WF_SMU_SYS_FANS_INTERVAL;  in wf_smu_sys_fans_tick()
352 	if (temp > (st->pid.param.itarget + 0x50000))  in wf_smu_sys_fans_tick()
355 	new_setpoint = wf_pid_run(&st->pid, temp);  in wf_smu_sys_fans_tick()
357 	DBG("wf_smu: new_setpoint: %d RPM\n", (int)new_setpoint);  in wf_smu_sys_fans_tick()
359 	scaled = ((((s64)new_setpoint) * (s64)st->scale0) >> 12) + st->offset0;  in wf_smu_sys_fans_tick()
361 	DBG("wf_smu: scaled setpoint: %d RPM\n", (int)scaled);  in wf_smu_sys_fans_tick()
363 	cputarget = wf_smu_cpu_fans ? wf_smu_cpu_fans->pid.target : 0;  in wf_smu_sys_fans_tick()
364 	cputarget = ((((s64)cputarget) * (s64)st->scale1) >> 12) + st->offset1;  in wf_smu_sys_fans_tick()
366 	scaled = max(scaled, st->pid.param.min);  in wf_smu_sys_fans_tick()
367 	scaled = min(scaled, st->pid.param.max);  in wf_smu_sys_fans_tick()
369 	DBG("wf_smu: adjusted setpoint: %d RPM\n", (int)scaled);  in wf_smu_sys_fans_tick()
371 	if (st->sys_setpoint == scaled && new_setpoint == st->hd_setpoint)  in wf_smu_sys_fans_tick()
373 	st->sys_setpoint = scaled;  in wf_smu_sys_fans_tick()
374 	st->hd_setpoint = new_setpoint;  in wf_smu_sys_fans_tick()
377 		rc = wf_control_set(fan_system, st->sys_setpoint);  in wf_smu_sys_fans_tick()
385 		rc = wf_control_set(fan_hd, st->hd_setpoint);  in wf_smu_sys_fans_tick()
417 		tmax = ((s32)fvt->maxtemp) << 16;  in wf_smu_create_cpu_fans()
426        	wf_smu_cpu_fans->ticks = 1;  in wf_smu_create_cpu_fans()
428 	wf_smu_cpu_fans->scale = WF_SMU_CPU_FANS_SIBLING_SCALE;  in wf_smu_create_cpu_fans()
429 	wf_smu_cpu_fans->offset = WF_SMU_CPU_FANS_SIBLING_OFFSET;  in wf_smu_create_cpu_fans()
433 	pid_param.history_len = piddata->history_len;  in wf_smu_create_cpu_fans()
436 		       "CPU control loop (%d)\n", piddata->history_len);  in wf_smu_create_cpu_fans()
439 	pid_param.gd = piddata->gd;  in wf_smu_create_cpu_fans()
440 	pid_param.gp = piddata->gp;  in wf_smu_create_cpu_fans()
441 	pid_param.gr = piddata->gr / pid_param.history_len;  in wf_smu_create_cpu_fans()
443 	tdelta = ((s32)piddata->target_temp_delta) << 16;  in wf_smu_create_cpu_fans()
444 	maxpow = ((s32)piddata->max_power) << 16;  in wf_smu_create_cpu_fans()
445 	powadj = ((s32)piddata->power_adj) << 16;  in wf_smu_create_cpu_fans()
448 	pid_param.ttarget = tmax - tdelta;  in wf_smu_create_cpu_fans()
449 	pid_param.pmaxadj = maxpow - powadj;  in wf_smu_create_cpu_fans()
451 	pid_param.min = wf_control_get_min(fan_cpu_main);  in wf_smu_create_cpu_fans()
454 	wf_cpu_pid_init(&wf_smu_cpu_fans->pid, &pid_param);  in wf_smu_create_cpu_fans()
457 	DBG("    ttarget=%d.%03d, tmax=%d.%03d, min=%d RPM, max=%d RPM\n",  in wf_smu_create_cpu_fans()
459 	    pid_param.min, pid_param.max);  in wf_smu_create_cpu_fans()
478 	if (--st->ticks != 0) {  in wf_smu_cpu_fans_tick()
483 	st->ticks = WF_SMU_CPU_FANS_INTERVAL;  in wf_smu_cpu_fans_tick()
508 	if (temp > st->pid.param.tmax)  in wf_smu_cpu_fans_tick()
511 	new_setpoint = wf_cpu_pid_run(&st->pid, power, temp);  in wf_smu_cpu_fans_tick()
513 	DBG("wf_smu: new_setpoint: %d RPM\n", (int)new_setpoint);  in wf_smu_cpu_fans_tick()
515 	systarget = wf_smu_sys_fans ? wf_smu_sys_fans->pid.target : 0;  in wf_smu_cpu_fans_tick()
516 	systarget = ((((s64)systarget) * (s64)st->scale) >> 12)  in wf_smu_cpu_fans_tick()
517 		+ st->offset;  in wf_smu_cpu_fans_tick()
519 	new_setpoint = max(new_setpoint, st->pid.param.min);  in wf_smu_cpu_fans_tick()
520 	new_setpoint = min(new_setpoint, st->pid.param.max);  in wf_smu_cpu_fans_tick()
522 	DBG("wf_smu: adjusted setpoint: %d RPM\n", (int)new_setpoint);  in wf_smu_cpu_fans_tick()
524 	if (st->cpu_setpoint == new_setpoint)  in wf_smu_cpu_fans_tick()
526 	st->cpu_setpoint = new_setpoint;  in wf_smu_cpu_fans_tick()
529 		rc = wf_control_set(fan_cpu_main, st->cpu_setpoint);  in wf_smu_cpu_fans_tick()
556 	if (wf_smu_skipping && --wf_smu_skipping)  in wf_smu_tick()
617 	if (fan_cpu_main == NULL && !strcmp(ct->name, "cpu-fan")) {  in wf_smu_new_control()
622 	if (fan_system == NULL && !strcmp(ct->name, "system-fan")) {  in wf_smu_new_control()
627 	if (cpufreq_clamp == NULL && !strcmp(ct->name, "cpufreq-clamp")) {  in wf_smu_new_control()
642 	if (fan_hd == NULL && !strcmp(ct->name, "drive-bay-fan")) {  in wf_smu_new_control()
656 	if (sensor_cpu_power == NULL && !strcmp(sr->name, "cpu-power")) {  in wf_smu_new_sensor()
661 	if (sensor_cpu_temp == NULL && !strcmp(sr->name, "cpu-temp")) {  in wf_smu_new_sensor()
666 	if (sensor_hd_temp == NULL && !strcmp(sr->name, "hd-temp")) {  in wf_smu_new_sensor()
682 		    ((struct wf_control *)data)->name);  in wf_smu_notify()
688 		    ((struct wf_sensor *)data)->name);  in wf_smu_notify()
711 		wf_smu_mach_model = st->model_id;  in wf_init_pm()
777 	int rc = -ENODEV;  in wf_smu_init()