73 строки
2.3 KiB
C
73 строки
2.3 KiB
C
/* ------------------------------------------------------------------------- */
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/* i2c-algo-ite.h i2c driver algorithms for ITE IIC adapters */
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/* ------------------------------------------------------------------------- */
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/* Copyright (C) 1995-97 Simon G. Vogl
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1998-99 Hans Berglund
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* ------------------------------------------------------------------------- */
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/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
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Frodo Looijaard <frodol@dds.nl> */
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/* Modifications by MontaVista Software, 2001
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Changes made to support the ITE IIC peripheral */
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#ifndef I2C_ALGO_ITE_H
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#define I2C_ALGO_ITE_H 1
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#include <linux/types.h>
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/* Example of a sequential read request:
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struct i2c_iic_msg s_msg;
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s_msg.addr=device_address;
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s_msg.len=length;
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s_msg.buf=buffer;
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s_msg.waddr=word_address;
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ioctl(file,I2C_SREAD, &s_msg);
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*/
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#define I2C_SREAD 0x780 /* SREAD ioctl command */
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struct i2c_iic_msg {
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__u16 addr; /* device address */
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__u16 waddr; /* word address */
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short len; /* msg length */
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char *buf; /* pointer to msg data */
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};
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#ifdef __KERNEL__
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struct i2c_adapter;
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struct i2c_algo_iic_data {
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void *data; /* private data for lolevel routines */
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void (*setiic) (void *data, int ctl, int val);
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int (*getiic) (void *data, int ctl);
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int (*getown) (void *data);
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int (*getclock) (void *data);
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void (*waitforpin) (void);
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/* local settings */
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int udelay;
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int mdelay;
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int timeout;
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};
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int i2c_iic_add_bus(struct i2c_adapter *);
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int i2c_iic_del_bus(struct i2c_adapter *);
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#endif /* __KERNEL__ */
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#endif /* I2C_ALGO_ITE_H */
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