linux-imx

/*

 * A hwmon driver for the Analog Devices ADT7462

 * Copyright (C) 2008 IBM

 *

 * Author: Darrick J. Wong <darrick.wong@oracle.com>

 *

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

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 */

​

#include <linux/module.h>

#include <linux/jiffies.h>

#include <linux/i2c.h>

#include <linux/hwmon.h>

#include <linux/hwmon-sysfs.h>

#include <linux/err.h>

#include <linux/mutex.h>

#include <linux/log2.h>

#include <linux/slab.h>

​

/* Addresses to scan */

static const unsigned short normal_i2c[] = { 0x58, 0x5C, I2C_CLIENT_END };

​

/* ADT7462 registers */

#define ADT7462_REG_DEVICE          0x3D

#define ADT7462_REG_VENDOR          0x3E

#define ADT7462_REG_REVISION            0x3F

​

#define ADT7462_REG_MIN_TEMP_BASE_ADDR      0x44

#define ADT7462_REG_MIN_TEMP_MAX_ADDR       0x47

#define ADT7462_REG_MAX_TEMP_BASE_ADDR      0x48

#define ADT7462_REG_MAX_TEMP_MAX_ADDR       0x4B

#define ADT7462_REG_TEMP_BASE_ADDR      0x88

#define ADT7462_REG_TEMP_MAX_ADDR       0x8F

​

#define ADT7462_REG_FAN_BASE_ADDR       0x98

#define ADT7462_REG_FAN_MAX_ADDR        0x9F

#define ADT7462_REG_FAN2_BASE_ADDR      0xA2

#define ADT7462_REG_FAN2_MAX_ADDR       0xA9

#define ADT7462_REG_FAN_ENABLE          0x07

#define ADT7462_REG_FAN_MIN_BASE_ADDR       0x78

#define ADT7462_REG_FAN_MIN_MAX_ADDR        0x7F

​

#define ADT7462_REG_CFG2            0x02

#define     ADT7462_FSPD_MASK       0x20

​

#define ADT7462_REG_PWM_BASE_ADDR       0xAA

#define ADT7462_REG_PWM_MAX_ADDR        0xAD

#define ADT7462_REG_PWM_MIN_BASE_ADDR       0x28

#define ADT7462_REG_PWM_MIN_MAX_ADDR        0x2B

#define ADT7462_REG_PWM_MAX         0x2C

#define ADT7462_REG_PWM_TEMP_MIN_BASE_ADDR  0x5C