linux-imx

/*

 * A hwmon driver for the Analog Devices ADT7470

 * Copyright (C) 2007 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

 */

​

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

​

#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/delay.h>

#include <linux/log2.h>

#include <linux/kthread.h>

#include <linux/slab.h>

#include <linux/util_macros.h>

​

/* Addresses to scan */

static const unsigned short normal_i2c[] = { 0x2C, 0x2E, 0x2F, I2C_CLIENT_END };

​

/* ADT7470 registers */

#define ADT7470_REG_BASE_ADDR           0x20

#define ADT7470_REG_TEMP_BASE_ADDR      0x20

#define ADT7470_REG_TEMP_MAX_ADDR       0x29

#define ADT7470_REG_FAN_BASE_ADDR       0x2A

#define ADT7470_REG_FAN_MAX_ADDR        0x31

#define ADT7470_REG_PWM_BASE_ADDR       0x32

#define ADT7470_REG_PWM_MAX_ADDR        0x35

#define ADT7470_REG_PWM_MAX_BASE_ADDR       0x38

#define ADT7470_REG_PWM_MAX_MAX_ADDR        0x3B

#define ADT7470_REG_CFG             0x40

#define     ADT7470_FSPD_MASK       0x04

#define ADT7470_REG_ALARM1          0x41

#define     ADT7470_R1T_ALARM       0x01

#define     ADT7470_R2T_ALARM       0x02

#define     ADT7470_R3T_ALARM       0x04

#define     ADT7470_R4T_ALARM       0x08

#define     ADT7470_R5T_ALARM       0x10

#define     ADT7470_R6T_ALARM       0x20

#define     ADT7470_R7T_ALARM       0x40

#define     ADT7470_OOL_ALARM       0x80

#define ADT7470_REG_ALARM2          0x42

#define     ADT7470_R8T_ALARM       0x01

#define     ADT7470_R9T_ALARM       0x02

#define     ADT7470_R10T_ALARM      0x04

#define     ADT7470_FAN1_ALARM      0x10

#define     ADT7470_FAN2_ALARM      0x20

#define     ADT7470_FAN3_ALARM      0x40

#define     ADT7470_FAN4_ALARM      0x80

#define ADT7470_REG_TEMP_LIMITS_BASE_ADDR   0x44

#define ADT7470_REG_TEMP_LIMITS_MAX_ADDR    0x57

#define ADT7470_REG_FAN_MIN_BASE_ADDR       0x58

#define ADT7470_REG_FAN_MIN_MAX_ADDR        0x5F

#define ADT7470_REG_FAN_MAX_BASE_ADDR       0x60

#define ADT7470_REG_FAN_MAX_MAX_ADDR        0x67

#define ADT7470_REG_PWM_CFG_BASE_ADDR       0x68

#define ADT7470_REG_PWM12_CFG           0x68

#define     ADT7470_PWM2_AUTO_MASK      0x40

#define     ADT7470_PWM1_AUTO_MASK      0x80

#define     ADT7470_PWM_AUTO_MASK       0xC0

#define ADT7470_REG_PWM34_CFG           0x69

#define     ADT7470_PWM3_AUTO_MASK      0x40

#define     ADT7470_PWM4_AUTO_MASK      0x80

#define ADT7470_REG_PWM_MIN_BASE_ADDR       0x6A

#define ADT7470_REG_PWM_MIN_MAX_ADDR        0x6D

#define ADT7470_REG_PWM_TEMP_MIN_BASE_ADDR  0x6E

#define ADT7470_REG_PWM_TEMP_MIN_MAX_ADDR   0x71

#define ADT7470_REG_CFG_2           0x74

#define ADT7470_REG_ACOUSTICS12         0x75

#define ADT7470_REG_ACOUSTICS34         0x76

#define ADT7470_REG_DEVICE          0x3D

#define ADT7470_REG_VENDOR          0x3E

#define ADT7470_REG_REVISION            0x3F