| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 Kyösti Mälkki <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 */ |