1 /* ------------------------------------------------------------------------- */ 2 /* i2c-algo-ite.h i2c driver algorithms for ITE IIC adapters */ 3 /* ------------------------------------------------------------------------- */ 4 /* Copyright (C) 1995-97 Simon G. Vogl 5 1998-99 Hans Berglund 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ 20 /* ------------------------------------------------------------------------- */ 21 22 /* With some changes from Ky�sti M�lkki <kmalkki@cc.hut.fi> and even 23 Frodo Looijaard <frodol@dds.nl> */ 24 25 /* Modifications by MontaVista Software, 2001 26 Changes made to support the ITE IIC peripheral */ 27 28 29 #ifndef I2C_ALGO_ITE_H 30 #define I2C_ALGO_ITE_H 1 31 32 #include <linux/i2c.h> 33 34 /* Example of a sequential read request: 35 struct i2c_iic_msg s_msg; 36 37 s_msg.addr=device_address; 38 s_msg.len=length; 39 s_msg.buf=buffer; 40 s_msg.waddr=word_address; 41 ioctl(file,I2C_SREAD, &s_msg); 42 */ 43 #define I2C_SREAD 0x780 /* SREAD ioctl command */ 44 45 struct i2c_iic_msg { 46 __u16 addr; /* device address */ 47 __u16 waddr; /* word address */ 48 short len; /* msg length */ 49 char *buf; /* pointer to msg data */ 50 }; 51 52 struct i2c_algo_iic_data { 53 void *data; /* private data for lolevel routines */ 54 void (*setiic) (void *data, int ctl, int val); 55 int (*getiic) (void *data, int ctl); 56 int (*getown) (void *data); 57 int (*getclock) (void *data); 58 void (*waitforpin) (void); 59 60 /* local settings */ 61 int udelay; 62 int mdelay; 63 int timeout; 64 }; 65 66 int i2c_iic_add_bus(struct i2c_adapter *); 67 int i2c_iic_del_bus(struct i2c_adapter *); 68 69 #endif /* I2C_ALGO_ITE_H */ 70