linux/drivers/hwmon/iio_hwmon.c

// SPDX-License-Identifier: GPL-2.0-only
/* Hwmon client for industrial I/O devices
 *
 * Copyright (c) 2011 Jonathan Cameron
 */

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/property.h>

#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/iio/consumer.h>
#include <linux/iio/types.h>

/**
 * struct iio_hwmon_state - device instance state
 * @channels:		filled with array of channels from iio
 * @num_channels:	number of channels in channels (saves counting twice)
 * @attr_group:		the group of attributes
 * @groups:		null terminated array of attribute groups
 * @attrs:		null terminated array of attribute pointers.
 */
struct iio_hwmon_state { … };

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

/*
 * Assumes that IIO and hwmon operate in the same base units.
 * This is supposed to be true, but needs verification for
 * new channel types.
 */
static ssize_t iio_hwmon_read_val(struct device *dev,
				  struct device_attribute *attr,
				  char *buf)
{ … }

static int iio_hwmon_probe(struct platform_device *pdev)
{ … }

static const struct of_device_id iio_hwmon_of_match[] = …;
MODULE_DEVICE_TABLE(of, iio_hwmon_of_match);

static struct platform_driver iio_hwmon_driver = …;

module_platform_driver(…) …;

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