linux/drivers/hwmon/adt7x10.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * adt7x10.c - Part of lm_sensors, Linux kernel modules for hardware
 *	 monitoring
 * This driver handles the ADT7410 and compatible digital temperature sensors.
 * Hartmut Knaack <[email protected]> 2012-07-22
 * based on lm75.c by Frodo Looijaard <[email protected]>
 * and adt7410.c from iio-staging by Sonic Zhang <[email protected]>
 */

#include <linux/device.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/hwmon.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/regmap.h>

#include "adt7x10.h"

/*
 * ADT7X10 status
 */
#define ADT7X10_STAT_T_LOW …
#define ADT7X10_STAT_T_HIGH …
#define ADT7X10_STAT_T_CRIT …
#define ADT7X10_STAT_NOT_RDY …

/*
 * ADT7X10 config
 */
#define ADT7X10_FAULT_QUEUE_MASK …
#define ADT7X10_CT_POLARITY …
#define ADT7X10_INT_POLARITY …
#define ADT7X10_EVENT_MODE …
#define ADT7X10_MODE_MASK …
#define ADT7X10_FULL …
#define ADT7X10_PD …
#define ADT7X10_RESOLUTION …

/*
 * ADT7X10 masks
 */
#define ADT7X10_T13_VALUE_MASK …
#define ADT7X10_T_HYST_MASK …

/* straight from the datasheet */
#define ADT7X10_TEMP_MIN …
#define ADT7X10_TEMP_MAX …

/* Each client has this additional data */
struct adt7x10_data { … };

enum { … };

static const u8 ADT7X10_REG_TEMP[] = …;

static irqreturn_t adt7x10_irq_handler(int irq, void *private)
{ … }

static int adt7x10_temp_ready(struct regmap *regmap)
{ … }

static s16 ADT7X10_TEMP_TO_REG(long temp)
{ … }

static int ADT7X10_REG_TO_TEMP(struct adt7x10_data *data, s16 reg)
{ … }

/*-----------------------------------------------------------------------*/

static int adt7x10_temp_read(struct adt7x10_data *data, int index, long *val)
{ … }

static int adt7x10_temp_write(struct adt7x10_data *data, int index, long temp)
{ … }

static int adt7x10_hyst_read(struct adt7x10_data *data, int index, long *val)
{ … }

static int adt7x10_hyst_write(struct adt7x10_data *data, long hyst)
{ … }

static int adt7x10_alarm_read(struct adt7x10_data *data, int index, long *val)
{ … }

static umode_t adt7x10_is_visible(const void *data,
				  enum hwmon_sensor_types type,
				  u32 attr, int channel)
{ … }

static int adt7x10_read(struct device *dev, enum hwmon_sensor_types type,
			u32 attr, int channel, long *val)
{ … }

static int adt7x10_write(struct device *dev, enum hwmon_sensor_types type,
			 u32 attr, int channel, long val)
{ … }

static const struct hwmon_channel_info * const adt7x10_info[] = …;

static const struct hwmon_ops adt7x10_hwmon_ops = …;

static const struct hwmon_chip_info adt7x10_chip_info = …;

static void adt7x10_restore_config(void *private)
{ … }

int adt7x10_probe(struct device *dev, const char *name, int irq,
		  struct regmap *regmap)
{ … }
EXPORT_SYMBOL_GPL(…);

static int adt7x10_suspend(struct device *dev)
{ … }

static int adt7x10_resume(struct device *dev)
{ … }

EXPORT_SIMPLE_DEV_PM_OPS(…);

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;