linux/drivers/platform/mellanox/mlxreg-io.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Mellanox register access driver
 *
 * Copyright (C) 2018 Mellanox Technologies
 * Copyright (C) 2018 Vadim Pasternak <[email protected]>
 */

#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/module.h>
#include <linux/platform_data/mlxreg.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>

/* Attribute parameters. */
#define MLXREG_IO_ATT_SIZE …
#define MLXREG_IO_ATT_NUM …

/**
 * struct mlxreg_io_priv_data - driver's private data:
 *
 * @pdev: platform device;
 * @pdata: platform data;
 * @hwmon: hwmon device;
 * @mlxreg_io_attr: sysfs attributes array;
 * @mlxreg_io_dev_attr: sysfs sensor device attribute array;
 * @group: sysfs attribute group;
 * @groups: list of sysfs attribute group for hwmon registration;
 * @regsize: size of a register value;
 * @io_lock: user access locking;
 */
struct mlxreg_io_priv_data { … };

static int
mlxreg_io_get_reg(void *regmap, struct mlxreg_core_data *data, u32 in_val,
		  bool rw_flag, int regsize, u32 *regval)
{ … }

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

static ssize_t
mlxreg_io_attr_store(struct device *dev, struct device_attribute *attr,
		     const char *buf, size_t len)
{ … }

static struct device_attribute mlxreg_io_devattr_rw = …;

static int mlxreg_io_attr_init(struct mlxreg_io_priv_data *priv)
{ … }

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

static void mlxreg_io_remove(struct platform_device *pdev)
{ … }

static struct platform_driver mlxreg_io_driver = …;

module_platform_driver(…) …;

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