1 // SPDX-License-Identifier: GPL-2.0-only
36 static int smu_supports_new_fans_ops = 1;
46 	int    			fan_type;	/* 0 = rpm, 1 = pwm */
64 	/* The SMU has an "old" and a "new" way of setting the fan speed  in smu_set_fan()
73 		buffer[1] = id;  in smu_set_fan()
78 			return -EINVAL;  in smu_set_fan()
82 		buffer[1] = 0x01 << id;  in smu_set_fan()
100 		printk(KERN_WARNING "windfarm: SMU failed new fan command "  in smu_set_fan()
120 	if (value < fct->min)  in smu_fan_set()
121 		value = fct->min;  in smu_fan_set()
122 	if (value > fct->max)  in smu_fan_set()
123 		value = fct->max;  in smu_fan_set()
124 	fct->value = value;  in smu_fan_set()
126 	return smu_set_fan(fct->fan_type, fct->reg, value);  in smu_fan_set()
132 	*value = fct->value; /* todo: read from SMU */  in smu_fan_get()
139 	return fct->min;  in smu_fan_min()
145 	return fct->max;  in smu_fan_max()
168 	fct->ctrl.ops = &smu_fan_ops;  in smu_fan_create()
173 	fct->fan_type = pwm_fan;  in smu_fan_create()
174 	fct->ctrl.type = pwm_fan ? WF_CONTROL_PWM_FAN : WF_CONTROL_RPM_FAN;  in smu_fan_create()
185 	fct->ctrl.name = NULL;  in smu_fan_create()
188 	if (!strcmp(l, "Rear Fan 0") || !strcmp(l, "Rear Fan") ||  in smu_fan_create()
189 	    !strcmp(l, "Rear fan 0") || !strcmp(l, "Rear fan") ||  in smu_fan_create()
191 		fct->ctrl.name = "cpu-rear-fan-0";  in smu_fan_create()
192 	else if (!strcmp(l, "Rear Fan 1") || !strcmp(l, "Rear fan 1") ||  in smu_fan_create()
194 		fct->ctrl.name = "cpu-rear-fan-1";  in smu_fan_create()
195 	else if (!strcmp(l, "Front Fan 0") || !strcmp(l, "Front Fan") ||  in smu_fan_create()
196 		 !strcmp(l, "Front fan 0") || !strcmp(l, "Front fan") ||  in smu_fan_create()
198 		fct->ctrl.name = "cpu-front-fan-0";  in smu_fan_create()
199 	else if (!strcmp(l, "Front Fan 1") || !strcmp(l, "Front fan 1") ||  in smu_fan_create()
201 		fct->ctrl.name = "cpu-front-fan-1";  in smu_fan_create()
203 		fct->ctrl.name = "cpu-pump-0";  in smu_fan_create()
205 		fct->ctrl.name = "cpu-pump-1";  in smu_fan_create()
206 	else if (!strcmp(l, "Slots Fan") || !strcmp(l, "Slots fan") ||  in smu_fan_create()
208 		fct->ctrl.name = "slots-fan";  in smu_fan_create()
211 		fct->ctrl.name = "drive-bay-fan";  in smu_fan_create()
213 		fct->ctrl.name = "backside-fan";  in smu_fan_create()
216 	if (!strcmp(l, "System Fan") || !strcmp(l, "System fan"))  in smu_fan_create()
217 		fct->ctrl.name = "system-fan";  in smu_fan_create()
218 	else if (!strcmp(l, "CPU Fan") || !strcmp(l, "CPU fan"))  in smu_fan_create()
219 		fct->ctrl.name = "cpu-fan";  in smu_fan_create()
221 		fct->ctrl.name = "drive-bay-fan";  in smu_fan_create()
222 	else if (!strcmp(l, "HDD Fan")) /* seen on iMac G5 iSight */  in smu_fan_create()
223 		fct->ctrl.name = "hard-drive-fan";  in smu_fan_create()
224 	else if (!strcmp(l, "ODD Fan")) /* same */  in smu_fan_create()
225 		fct->ctrl.name = "optical-drive-fan";  in smu_fan_create()
227 	/* Unrecognized fan, bail out */  in smu_fan_create()
228 	if (fct->ctrl.name == NULL)  in smu_fan_create()
232 	v = of_get_property(node, "min-value", NULL);  in smu_fan_create()
235 	fct->min = *v;  in smu_fan_create()
236 	v = of_get_property(node, "max-value", NULL);  in smu_fan_create()
239 	fct->max = *v;  in smu_fan_create()
245 	fct->reg = *reg;  in smu_fan_create()
247 	if (wf_register_control(&fct->ctrl))  in smu_fan_create()
259 	struct device_node *smu, *fans, *fan;  in smu_controls_init()  local
262 		return -ENODEV;  in smu_controls_init()
266 		return -ENODEV;  in smu_controls_init()
270 		if (of_node_name_eq(fans, "rpm-fans") ||  in smu_controls_init()
271 		    of_device_is_compatible(fans, "smu-rpm-fans"))  in smu_controls_init()
273 	for_each_child_of_node(fans, fan) {  in smu_controls_init()
276 		fct = smu_fan_create(fan, 0);  in smu_controls_init()
279 			       "RPM fan %pOFn\n", fan);  in smu_controls_init()
282 		list_add(&fct->link, &smu_fans);  in smu_controls_init()
289 		if (of_node_name_eq(fans, "pwm-fans"))  in smu_controls_init()
291 	for_each_child_of_node(fans, fan) {  in smu_controls_init()
294 		fct = smu_fan_create(fan, 1);  in smu_controls_init()
297 			       "PWM fan %pOFn\n", fan);  in smu_controls_init()
300 		list_add(&fct->link, &smu_fans);  in smu_controls_init()
314 		list_del(&fct->link);  in smu_controls_exit()
315 		wf_unregister_control(&fct->ctrl);  in smu_controls_exit()