1// SPDX-License-Identifier: LGPL-2.1+
  2// Copyright (C) 2022, Linaro Ltd - Daniel Lezcano <daniel.lezcano@linaro.org>
  3#include <stdio.h>
  4#include <limits.h>
  5#include <thermal.h>
  6
  7#include "thermal_nl.h"
  8
  9int for_each_thermal_threshold(struct thermal_threshold *th, cb_th_t cb, void *arg)
 10{
 11	int i, ret = 0;
 12
 13	if (!th)
 14		return 0;
 15
 16	for (i = 0; th[i].temperature != INT_MAX; i++)
 17		ret |= cb(&th[i], arg);
 18
 19	return ret;
 20}
 21
 22int for_each_thermal_cdev(struct thermal_cdev *cdev, cb_tc_t cb, void *arg)
 23{
 24	int i, ret = 0;
 25
 26	if (!cdev)
 27		return 0;
 28
 29	for (i = 0; cdev[i].id != -1; i++)
 30		ret |= cb(&cdev[i], arg);
 31
 32	return ret;
 33}
 34
 35int for_each_thermal_trip(struct thermal_trip *tt, cb_tt_t cb, void *arg)
 36{
 37	int i, ret = 0;
 38
 39	if (!tt)
 40		return 0;
 41
 42	for (i = 0; tt[i].id != -1; i++)
 43		ret |= cb(&tt[i], arg);
 44
 45	return ret;
 46}
 47
 48int for_each_thermal_zone(struct thermal_zone *tz, cb_tz_t cb, void *arg)
 49{
 50	int i, ret = 0;
 51
 52	if (!tz)
 53		return 0;
 54
 55	for (i = 0; tz[i].id != -1; i++)
 56		ret |= cb(&tz[i], arg);
 57
 58	return ret;
 59}
 60
 61struct thermal_zone *thermal_zone_find_by_name(struct thermal_zone *tz,
 62					       const char *name)
 63{
 64	int i;
 65
 66	if (!tz || !name)
 67		return NULL;
 68
 69	for (i = 0; tz[i].id != -1; i++) {
 70		if (!strcmp(tz[i].name, name))
 71			return &tz[i];
 72	}
 73
 74	return NULL;
 75}
 76
 77struct thermal_zone *thermal_zone_find_by_id(struct thermal_zone *tz, int id)
 78{
 79	int i;
 80
 81	if (!tz || id < 0)
 82		return NULL;
 83
 84	for (i = 0; tz[i].id != -1; i++) {
 85		if (tz[i].id == id)
 86			return &tz[i];
 87	}
 88
 89	return NULL;
 90}
 91
 92static int __thermal_zone_discover(struct thermal_zone *tz, void *th)
 93{
 94	if (thermal_cmd_get_trip(th, tz) < 0)
 95		return -1;
 96
 97	if (thermal_cmd_threshold_get(th, tz))
 98		return -1;
 99
100	if (thermal_cmd_get_governor(th, tz))
101		return -1;
102
103	return 0;
104}
105
106struct thermal_zone *thermal_zone_discover(struct thermal_handler *th)
107{
108	struct thermal_zone *tz;
109
110	if (thermal_cmd_get_tz(th, &tz) < 0)
111		return NULL;
112
113	if (for_each_thermal_zone(tz, __thermal_zone_discover, th))
114		return NULL;
115
116	return tz;
117}
118
119void thermal_exit(struct thermal_handler *th)
120{
121	thermal_cmd_exit(th);
122	thermal_events_exit(th);
123	thermal_sampling_exit(th);
124
125	free(th);
126}
127
128struct thermal_handler *thermal_init(struct thermal_ops *ops)
129{
130	struct thermal_handler *th;
131
132	th = malloc(sizeof(*th));
133	if (!th)
134		return NULL;
135	th->ops = ops;
136
137	if (thermal_events_init(th))
138		goto out_free;
139
140	if (thermal_sampling_init(th))
141		goto out_free;
142
143	if (thermal_cmd_init(th))
144		goto out_free;
145
146	return th;
147
148out_free:
149	free(th);
150
151	return NULL;
152}