Subversion Repositories shark

Rev

Go to most recent revision | Blame | Compare with Previous | Last modification | View Log | RSS feed

/* ------------------------------------------------------------------------- */
/* i2c-algo-ite.h i2c driver algorithms for ITE IIC adapters                 */
/* ------------------------------------------------------------------------- */
/*   Copyright (C) 1995-97 Simon G. Vogl
                   1998-99 Hans Berglund

    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.                */

/* ------------------------------------------------------------------------- */

/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
   Frodo Looijaard <frodol@dds.nl> */


/* Modifications by MontaVista Software, 2001
   Changes made to support the ITE IIC peripheral */



#ifndef I2C_ALGO_ITE_H
#define I2C_ALGO_ITE_H 1

#include <linux/i2c.h>

/* Example of a sequential read request:
        struct i2c_iic_msg s_msg;

        s_msg.addr=device_address;
        s_msg.len=length;
        s_msg.buf=buffer;
        s_msg.waddr=word_address;
        ioctl(file,I2C_SREAD, &s_msg);
 */

#define I2C_SREAD       0x780   /* SREAD ioctl command */

struct i2c_iic_msg {
        __u16 addr;     /* device address */
        __u16 waddr;    /* word address */
        short len;      /* msg length */
        char *buf;      /* pointer to msg data */
};

struct i2c_algo_iic_data {
        void *data;             /* private data for lolevel routines    */
        void (*setiic) (void *data, int ctl, int val);
        int  (*getiic) (void *data, int ctl);
        int  (*getown) (void *data);
        int  (*getclock) (void *data);
        void (*waitforpin) (void);    

        /* local settings */
        int udelay;
        int mdelay;
        int timeout;
};

int i2c_iic_add_bus(struct i2c_adapter *);
int i2c_iic_del_bus(struct i2c_adapter *);

#endif /* I2C_ALGO_ITE_H */