linux-imx

/*

 * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives

 * Copyright (C) 2007-2008, Advanced Micro Devices, Inc.

 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>

 * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>

 * Copyright (C) 2009 Jean Delvare <jdelvare@suse.de>

 *

 * Derived from the lm83 driver by Jean Delvare

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */

​

#include <linux/module.h>

#include <linux/of_device.h>

#include <linux/init.h>

#include <linux/slab.h>

#include <linux/i2c.h>

#include <linux/hwmon.h>

#include <linux/hwmon-sysfs.h>

#include <linux/hwmon-vid.h>

#include <linux/err.h>

#include <linux/jiffies.h>

#include <linux/util_macros.h>

​

/* Indexes for the sysfs hooks */

​

#define INPUT       0

#define MIN     1

#define MAX     2

#define CONTROL     3

#define OFFSET      3

#define AUTOMIN     4

#define THERM       5

#define HYSTERSIS   6

​

/*

 * These are unique identifiers for the sysfs functions - unlike the

 * numbers above, these are not also indexes into an array

 */

​

#define ALARM       9

#define FAULT       10

​

/* 7475 Common Registers */

​

#define REG_DEVREV2     0x12    /* ADT7490 only */

​

#define REG_VTT         0x1E    /* ADT7490 only */

#define REG_EXTEND3     0x1F    /* ADT7490 only */

​

#define REG_VOLTAGE_BASE    0x20

#define REG_TEMP_BASE       0x25

#define REG_TACH_BASE       0x28

#define REG_PWM_BASE        0x30

#define REG_PWM_MAX_BASE    0x38

​

#define REG_DEVID       0x3D

#define REG_VENDID      0x3E

#define REG_DEVID2      0x3F

​

#define REG_CONFIG1     0x40