max6650.h

max6650风扇控制芯片在linux 2.6.x下的控制程序

#ifndef MAX6650_H
#define	MAX6650_H
/*
 *  max6650.h
 *
 *  Copyright (C) 2006  Apple zeng
 *
 */

/*
 * MAX 6650/6651 registers
 */

#define MAX6650_REG_SPEED       0x00
#define MAX6650_REG_CONFIG      0x02
#define MAX6650_REG_GPIO_DEF    0x04
#define MAX6650_REG_DAC         0x06
#define MAX6650_REG_ALARM_EN    0x08
#define MAX6650_REG_ALARM       0x0A
#define MAX6650_REG_TACH0       0x0C
#define MAX6650_REG_TACH1       0x0E
#define MAX6650_REG_TACH2       0x10
#define MAX6650_REG_TACH3       0x12
#define MAX6650_REG_GPIO_STAT   0x14
#define MAX6650_REG_COUNT       0x16

/*
 * Config register bits
 */

#define MAX6650_CFG_MODE_MASK           0x30
#define MAX6650_CFG_MODE_ON             0x00
#define MAX6650_CFG_MODE_OFF            0x10
#define MAX6650_CFG_MODE_CLOSED_LOOP    0x20
#define MAX6650_CFG_MODE_OPEN_LOOP      0x30

typedef unsigned char u8;

static const u8 tach_reg[] =
{
    MAX6650_REG_TACH0, MAX6650_REG_TACH1,
    MAX6650_REG_TACH2, MAX6650_REG_TACH3
};

/*
 * Client data (each client gets its own)
 */

struct max6650_data
{
   /* register values */

    u8 speed;
    u8 config;
    u8 tach[4];
    u8 count;
};





#define I2C_FAN_MAX6650_1 		0x90
#define I2C_FAN_MAX6650_2		0x36
#endif