linux-imx

/*

 * f75375s.c - driver for the Fintek F75375/SP, F75373 and

 *             F75387SG/RG hardware monitoring features

 * Copyright (C) 2006-2007  Riku Voipio

 *

 * Datasheets available at:

 *

 * f75375:

 * http://www.fintek.com.tw/files/productfiles/F75375_V026P.pdf

 *

 * f75373:

 * http://www.fintek.com.tw/files/productfiles/F75373_V025P.pdf

 *

 * f75387:

 * http://www.fintek.com.tw/files/productfiles/F75387_V027P.pdf

 *

 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.

 *

 */

​

#include <linux/module.h>

#include <linux/jiffies.h>

#include <linux/hwmon.h>

#include <linux/hwmon-sysfs.h>

#include <linux/i2c.h>

#include <linux/err.h>

#include <linux/mutex.h>

#include <linux/f75375s.h>

#include <linux/slab.h>

​

/* Addresses to scan */

static const unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END };

​

enum chips { f75373, f75375, f75387 };

​

/* Fintek F75375 registers  */

#define F75375_REG_CONFIG0      0x0

#define F75375_REG_CONFIG1      0x1

#define F75375_REG_CONFIG2      0x2

#define F75375_REG_CONFIG3      0x3

#define F75375_REG_ADDR         0x4

#define F75375_REG_INTR         0x31

#define F75375_CHIP_ID          0x5A

#define F75375_REG_VERSION      0x5C

#define F75375_REG_VENDOR       0x5D

#define F75375_REG_FAN_TIMER        0x60

​

#define F75375_REG_VOLT(nr)     (0x10 + (nr))

#define F75375_REG_VOLT_HIGH(nr)    (0x20 + (nr) * 2)

#define F75375_REG_VOLT_LOW(nr)     (0x21 + (nr) * 2)

​

#define F75375_REG_TEMP(nr)     (0x14 + (nr))

#define F75387_REG_TEMP11_LSB(nr)   (0x1a + (nr))

#define F75375_REG_TEMP_HIGH(nr)    (0x28 + (nr) * 2)

#define F75375_REG_TEMP_HYST(nr)    (0x29 + (nr) * 2)

​

#define F75375_REG_FAN(nr)      (0x16 + (nr) * 2)

#define F75375_REG_FAN_MIN(nr)      (0x2C + (nr) * 2)

#define F75375_REG_FAN_FULL(nr)     (0x70 + (nr) * 0x10)

#define F75375_REG_FAN_PWM_DUTY(nr) (0x76 + (nr) * 0x10)

#define F75375_REG_FAN_PWM_CLOCK(nr)    (0x7D + (nr) * 0x10)

​

#define F75375_REG_FAN_EXP(nr)      (0x74 + (nr) * 0x10)

#define F75375_REG_FAN_B_TEMP(nr, step) ((0xA0 + (nr) * 0x10) + (step))

#define F75375_REG_FAN_B_SPEED(nr, step) \

    ((0xA5 + (nr) * 0x10) + (step) * 2)

​

#define F75375_REG_PWM1_RAISE_DUTY  0x69

#define F75375_REG_PWM2_RAISE_DUTY  0x6A

#define F75375_REG_PWM1_DROP_DUTY   0x6B

#define F75375_REG_PWM2_DROP_DUTY   0x6C

​

#define F75375_FAN_CTRL_LINEAR(nr)  (4 + nr)

#define F75387_FAN_CTRL_LINEAR(nr)  (1 + ((nr) * 4))

#define FAN_CTRL_MODE(nr)       (4 + ((nr) * 2))

#define F75387_FAN_DUTY_MODE(nr)    (2 + ((nr) * 4))

#define F75387_FAN_MANU_MODE(nr)    ((nr) * 4)

​

/*

 * Data structures and manipulation thereof