linux/drivers/hwmon/gsc-hwmon.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Driver for Gateworks System Controller Hardware Monitor module
 *
 * Copyright (C) 2020 Gateworks Corporation
 */
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/mfd/gsc.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/slab.h>

#include <linux/platform_data/gsc_hwmon.h>

#define GSC_HWMON_MAX_TEMP_CH …
#define GSC_HWMON_MAX_IN_CH …
#define GSC_HWMON_MAX_FAN_CH …

#define GSC_HWMON_RESOLUTION …
#define GSC_HWMON_VREF …

struct gsc_hwmon_data { … };

static const struct regmap_bus gsc_hwmon_regmap_bus = …;

static const struct regmap_config gsc_hwmon_regmap_config = …;

static ssize_t pwm_auto_point_temp_show(struct device *dev,
					struct device_attribute *devattr,
					char *buf)
{ … }

static ssize_t pwm_auto_point_temp_store(struct device *dev,
					 struct device_attribute *devattr,
					 const char *buf, size_t count)
{ … }

static ssize_t pwm_auto_point_pwm_show(struct device *dev,
				       struct device_attribute *devattr,
				       char *buf)
{ … }

static SENSOR_DEVICE_ATTR_RO(pwm1_auto_point1_pwm, pwm_auto_point_pwm, 0);
static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point1_temp, pwm_auto_point_temp, 0);

static SENSOR_DEVICE_ATTR_RO(pwm1_auto_point2_pwm, pwm_auto_point_pwm, 1);
static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point2_temp, pwm_auto_point_temp, 1);

static SENSOR_DEVICE_ATTR_RO(pwm1_auto_point3_pwm, pwm_auto_point_pwm, 2);
static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point3_temp, pwm_auto_point_temp, 2);

static SENSOR_DEVICE_ATTR_RO(pwm1_auto_point4_pwm, pwm_auto_point_pwm, 3);
static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point4_temp, pwm_auto_point_temp, 3);

static SENSOR_DEVICE_ATTR_RO(pwm1_auto_point5_pwm, pwm_auto_point_pwm, 4);
static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point5_temp, pwm_auto_point_temp, 4);

static SENSOR_DEVICE_ATTR_RO(pwm1_auto_point6_pwm, pwm_auto_point_pwm, 5);
static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point6_temp, pwm_auto_point_temp, 5);

static struct attribute *gsc_hwmon_attributes[] = …;

static const struct attribute_group gsc_hwmon_group = …;
__ATTRIBUTE_GROUPS(…);

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

static int
gsc_hwmon_read_string(struct device *dev, enum hwmon_sensor_types type,
		      u32 attr, int channel, const char **buf)
{ … }

static umode_t
gsc_hwmon_is_visible(const void *_data, enum hwmon_sensor_types type, u32 attr,
		     int ch)
{ … }

static const struct hwmon_ops gsc_hwmon_ops = …;

static struct gsc_hwmon_platform_data *
gsc_hwmon_get_devtree_pdata(struct device *dev)
{ … }

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

static const struct of_device_id gsc_hwmon_of_match[] = …;

static struct platform_driver gsc_hwmon_driver = …;

module_platform_driver(…) …;

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