drivers/thermal/gov_power_allocator.c

100 static bool power_actor_is_valid(struct power_allocator_params *params,
103 	return (instance->trip == params->trip_max &&
120 	struct power_allocator_params *params = tz->governor_data;
127 		if (!power_actor_is_valid(params, instance))
190  * @params:	parameters for the power allocator governor
199 				 struct power_allocator_params *params,
210 	if (sustainable_power != params->sustainable_power) {
212 				       params->trip_switch_on, control_temp);
216 		params->sustainable_power = sustainable_power;
244 	struct power_allocator_params *params = tz->governor_data;
251 	sustainable_power = get_sustainable_power(tz, params, control_temp);
265 	i = mul_frac(tz->tzp->k_i, params->err_integral);
272 			params->err_integral += err;
283 	d = mul_frac(tz->tzp->k_d, err - params->prev_err);
285 	params->prev_err = err;
295 					  frac_to_int(params->err_integral),
402 	struct power_allocator_params *params = tz->governor_data;
403 	unsigned int num_actors = params->num_actors;
404 	struct power_actor *power = params->power;
418 	memset(power, 0, params->buffer_size);
423 		if (!power_actor_is_valid(params, instance))
432 		if (!params->total_weight)
460 		if (!power_actor_is_valid(params, instance))
481  * @params:	pointer to private data for this governor
494 			       struct power_allocator_params *params)
521 		params->trip_switch_on = first_passive;
522 		params->trip_max = last_passive;
524 		params->trip_switch_on = NULL;
525 		params->trip_max = first_passive;
527 		params->trip_switch_on = NULL;
528 		params->trip_max = last_active;
532 static void reset_pid_controller(struct power_allocator_params *params)
534 	params->err_integral = 0;
535 	params->prev_err = 0;
540 	struct power_allocator_params *params = tz->governor_data;
546 		if (!power_actor_is_valid(params, instance))
560 		if (params->update_cdevs)
571  * @params:	power allocator private data
582 			      struct power_allocator_params *params)
588 		if (instance->trip != params->trip_max)
602 static int allocate_actors_buffer(struct power_allocator_params *params,
607 	kfree(params->power);
615 	params->power = kcalloc(num_actors, sizeof(struct power_actor),
617 	if (!params->power) {
622 	params->num_actors = num_actors;
623 	params->buffer_size = num_actors * sizeof(struct power_actor);
628 	params->num_actors = 0;
629 	params->buffer_size = 0;
630 	params->power = NULL;
637 	struct power_allocator_params *params = tz->governor_data;
645 			if (power_actor_is_valid(params, instance))
648 		if (num_actors == params->num_actors)
651 		allocate_actors_buffer(params, num_actors);
654 		params->total_weight = 0;
656 			if (power_actor_is_valid(params, instance))
657 				params->total_weight += instance->weight;
676 	struct power_allocator_params *params;
679 	params = kzalloc(sizeof(*params), GFP_KERNEL);
680 	if (!params)
683 	get_governor_trips(tz, params);
685 	ret = check_power_actors(tz, params);
688 		kfree(params);
692 	ret = allocate_actors_buffer(params, ret);
695 		kfree(params);
706 		params->allocated_tzp = true;
712 		params->sustainable_power = tz->tzp->sustainable_power;
714 	if (params->trip_max)
716 				       params->trip_switch_on,
717 				       params->trip_max->temperature);
719 	reset_pid_controller(params);
721 	tz->governor_data = params;
726 	kfree(params->power);
727 	kfree(params);
734 	struct power_allocator_params *params = tz->governor_data;
738 	if (params->allocated_tzp) {
743 	kfree(params->power);
750 	struct power_allocator_params *params = tz->governor_data;
751 	const struct thermal_trip *trip = params->trip_switch_on;
756 		reset_pid_controller(params);
758 		params->update_cdevs = false;
762 	allocate_power(tz, params->trip_max->temperature);
763 	params->update_cdevs = true;