linux/drivers/thermal/thermal_hwmon.c

// SPDX-License-Identifier: GPL-2.0
/*
 *  thermal_hwmon.c - Generic Thermal Management hwmon support.
 *
 *  Code based on Intel thermal_core.c. Copyrights of the original code:
 *  Copyright (C) 2008 Intel Corp
 *  Copyright (C) 2008 Zhang Rui <[email protected]>
 *  Copyright (C) 2008 Sujith Thomas <[email protected]>
 *
 *  Copyright (C) 2013 Texas Instruments
 *  Copyright (C) 2013 Eduardo Valentin <[email protected]>
 */
#include <linux/err.h>
#include <linux/export.h>
#include <linux/hwmon.h>
#include <linux/slab.h>
#include <linux/thermal.h>

#include "thermal_hwmon.h"
#include "thermal_core.h"

/* hwmon sys I/F */
/* thermal zone devices with the same type share one hwmon device */
struct thermal_hwmon_device { … };

struct thermal_hwmon_attr { … };

/* one temperature input for each thermal zone */
struct thermal_hwmon_temp { … };

static LIST_HEAD(thermal_hwmon_list);

static DEFINE_MUTEX(thermal_hwmon_list_lock);

static ssize_t
temp_input_show(struct device *dev, struct device_attribute *attr, char *buf)
{ … }

static ssize_t
temp_crit_show(struct device *dev, struct device_attribute *attr, char *buf)
{ … }


static struct thermal_hwmon_device *
thermal_hwmon_lookup_by_type(const struct thermal_zone_device *tz)
{ … }

/* Find the temperature input matching a given thermal zone */
static struct thermal_hwmon_temp *
thermal_hwmon_lookup_temp(const struct thermal_hwmon_device *hwmon,
			  const struct thermal_zone_device *tz)
{ … }

static bool thermal_zone_crit_temp_valid(struct thermal_zone_device *tz)
{ … }

int thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
{ … }
EXPORT_SYMBOL_GPL(…);

void thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
{ … }
EXPORT_SYMBOL_GPL(…);

static void devm_thermal_hwmon_release(struct device *dev, void *res)
{ … }

int devm_thermal_add_hwmon_sysfs(struct device *dev, struct thermal_zone_device *tz)
{ … }
EXPORT_SYMBOL_GPL(…);

MODULE_IMPORT_NS(…);