93 static void set_fan_speeds(struct bbc_fan_control *fp)  in set_fan_speeds()  argument
98 	if (fp->cpu_fan_speed < FAN_SPEED_MIN)  in set_fan_speeds()
99 		fp->cpu_fan_speed = FAN_SPEED_MIN;  in set_fan_speeds()
100 	if (fp->cpu_fan_speed > FAN_SPEED_MAX)  in set_fan_speeds()
101 		fp->cpu_fan_speed = FAN_SPEED_MAX;  in set_fan_speeds()
102 	if (fp->system_fan_speed < FAN_SPEED_MIN)  in set_fan_speeds()
103 		fp->system_fan_speed = FAN_SPEED_MIN;  in set_fan_speeds()
104 	if (fp->system_fan_speed > FAN_SPEED_MAX)  in set_fan_speeds()
105 		fp->system_fan_speed = FAN_SPEED_MAX;  in set_fan_speeds()
108 	       fp->index,  in set_fan_speeds()
109 	       fp->cpu_fan_speed, fp->system_fan_speed);  in set_fan_speeds()
112 	bbc_i2c_writeb(fp->client, fp->cpu_fan_speed, CPU_FAN_REG);  in set_fan_speeds()
113 	bbc_i2c_writeb(fp->client, fp->system_fan_speed, SYS_FAN_REG);  in set_fan_speeds()
114 	bbc_i2c_writeb(fp->client,  in set_fan_speeds()
115 		       (fp->psupply_fan_on ?  in set_fan_speeds()
320 static int maybe_new_ambient_fan_speed(struct bbc_fan_control *fp)  in maybe_new_ambient_fan_speed()  argument
330 		if (fp->system_fan_speed >= FAN_SPEED_MAX)  in maybe_new_ambient_fan_speed()
333 			fp->system_fan_speed = FAN_SPEED_MAX;  in maybe_new_ambient_fan_speed()
336 			if (fp->system_fan_speed >= FAN_SPEED_MAX)  in maybe_new_ambient_fan_speed()
339 				fp->system_fan_speed += 2;  in maybe_new_ambient_fan_speed()
341 			int orig_speed = fp->system_fan_speed;  in maybe_new_ambient_fan_speed()
344 			    orig_speed <= (fp->cpu_fan_speed - 3))  in maybe_new_ambient_fan_speed()
347 				fp->system_fan_speed -= 1;  in maybe_new_ambient_fan_speed()
354 static int maybe_new_cpu_fan_speed(struct bbc_fan_control *fp)  in maybe_new_cpu_fan_speed()  argument
364 		if (fp->cpu_fan_speed >= FAN_SPEED_MAX)  in maybe_new_cpu_fan_speed()
367 			fp->cpu_fan_speed = FAN_SPEED_MAX;  in maybe_new_cpu_fan_speed()
370 			if (fp->cpu_fan_speed >= FAN_SPEED_MAX)  in maybe_new_cpu_fan_speed()
373 				fp->cpu_fan_speed += 2;  in maybe_new_cpu_fan_speed()
374 				if (fp->system_fan_speed <  in maybe_new_cpu_fan_speed()
375 				    (fp->cpu_fan_speed - 3))  in maybe_new_cpu_fan_speed()
376 					fp->system_fan_speed =  in maybe_new_cpu_fan_speed()
377 						fp->cpu_fan_speed - 3;  in maybe_new_cpu_fan_speed()
380 			if (fp->cpu_fan_speed <= FAN_SPEED_MIN)  in maybe_new_cpu_fan_speed()
383 				fp->cpu_fan_speed -= 1;  in maybe_new_cpu_fan_speed()
390 static void maybe_new_fan_speeds(struct bbc_fan_control *fp)  in maybe_new_fan_speeds()  argument
394 	new  = maybe_new_ambient_fan_speed(fp);  in maybe_new_fan_speeds()
395 	new |= maybe_new_cpu_fan_speed(fp);  in maybe_new_fan_speeds()
398 		set_fan_speeds(fp);  in maybe_new_fan_speeds()
403 	struct bbc_fan_control *fp;  in fans_full_blast()  local
408 	list_for_each_entry(fp, &all_fans, glob_list) {  in fans_full_blast()
409 		fp->cpu_fan_speed = FAN_SPEED_MAX;  in fans_full_blast()
410 		fp->system_fan_speed = FAN_SPEED_MAX;  in fans_full_blast()
411 		fp->psupply_fan_on = 1;  in fans_full_blast()
412 		set_fan_speeds(fp);  in fans_full_blast()
426 		struct bbc_fan_control *fp;  in kenvctrld()  local
436 		list_for_each_entry(fp, &all_fans, glob_list)  in kenvctrld()
437 			maybe_new_fan_speeds(fp);  in kenvctrld()
497 	struct bbc_fan_control *fp;  in attach_one_fan()  local
499 	fp = kzalloc(sizeof(*fp), GFP_KERNEL);  in attach_one_fan()
500 	if (!fp)  in attach_one_fan()
503 	INIT_LIST_HEAD(&fp->bp_list);  in attach_one_fan()
504 	INIT_LIST_HEAD(&fp->glob_list);  in attach_one_fan()
506 	fp->client = bbc_i2c_attach(bp, op);  in attach_one_fan()
507 	if (!fp->client) {  in attach_one_fan()
508 		kfree(fp);  in attach_one_fan()
512 	fp->index = fan_idx;  in attach_one_fan()
514 	list_add(&fp->glob_list, &all_fans);  in attach_one_fan()
515 	list_add(&fp->bp_list, &bp->fans);  in attach_one_fan()
523 	fp->psupply_fan_on = 1;  in attach_one_fan()
524 	fp->cpu_fan_speed = (FAN_SPEED_MAX - FAN_SPEED_MIN) / 2;  in attach_one_fan()
525 	fp->cpu_fan_speed += FAN_SPEED_MIN;  in attach_one_fan()
526 	fp->system_fan_speed = (FAN_SPEED_MAX - FAN_SPEED_MIN) / 2;  in attach_one_fan()
527 	fp->system_fan_speed += FAN_SPEED_MIN;  in attach_one_fan()
529 	set_fan_speeds(fp);  in attach_one_fan()
549 static void destroy_one_fan(struct bbc_fan_control *fp)  in destroy_one_fan()  argument
551 	bbc_i2c_detach(fp->client);  in destroy_one_fan()
552 	kfree(fp);  in destroy_one_fan()
557 	struct bbc_fan_control *fp, *fpos;  in destroy_all_fans()  local
559 	list_for_each_entry_safe(fp, fpos, &bp->fans, bp_list) {  in destroy_all_fans()
560 		list_del(&fp->bp_list);  in destroy_all_fans()
561 		list_del(&fp->glob_list);  in destroy_all_fans()
562 		destroy_one_fan(fp);  in destroy_all_fans()