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Diffstat (limited to 'include/linux/i2c-algo-ite.h')
| -rw-r--r-- | include/linux/i2c-algo-ite.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/include/linux/i2c-algo-ite.h b/include/linux/i2c-algo-ite.h new file mode 100644 index 000000000000..26a8b89855f1 --- /dev/null +++ b/include/linux/i2c-algo-ite.h @@ -0,0 +1,69 @@ +/* ------------------------------------------------------------------------- */ +/* 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 */ |