Rev 422 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | /* ------------------------------------------------------------------------- */ |
| 2 | /* i2c-algo-bit.h i2c driver algorithms for bit-shift adapters */ |
||
| 3 | /* ------------------------------------------------------------------------- */ |
||
| 4 | /* Copyright (C) 1995-99 Simon G. Vogl |
||
| 5 | |||
| 6 | This program is free software; you can redistribute it and/or modify |
||
| 7 | it under the terms of the GNU General Public License as published by |
||
| 8 | the Free Software Foundation; either version 2 of the License, or |
||
| 9 | (at your option) any later version. |
||
| 10 | |||
| 11 | This program is distributed in the hope that it will be useful, |
||
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||
| 14 | GNU General Public License for more details. |
||
| 15 | |||
| 16 | You should have received a copy of the GNU General Public License |
||
| 17 | along with this program; if not, write to the Free Software |
||
| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
||
| 19 | /* ------------------------------------------------------------------------- */ |
||
| 20 | |||
| 21 | /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even |
||
| 22 | Frodo Looijaard <frodol@dds.nl> */ |
||
| 23 | |||
| 24 | /* $Id: i2c-algo-bit.h,v 1.1 2004-01-28 15:25:27 giacomo Exp $ */ |
||
| 25 | |||
| 26 | #ifndef _LINUX_I2C_ALGO_BIT_H |
||
| 27 | #define _LINUX_I2C_ALGO_BIT_H |
||
| 28 | |||
| 29 | /* --- Defines for bit-adapters --------------------------------------- */ |
||
| 30 | /* |
||
| 31 | * This struct contains the hw-dependent functions of bit-style adapters to |
||
| 32 | * manipulate the line states, and to init any hw-specific features. This is |
||
| 33 | * only used if you have more than one hw-type of adapter running. |
||
| 34 | */ |
||
| 35 | struct i2c_algo_bit_data { |
||
| 36 | void *data; /* private data for lowlevel routines */ |
||
| 37 | void (*setsda) (void *data, int state); |
||
| 38 | void (*setscl) (void *data, int state); |
||
| 39 | int (*getsda) (void *data); |
||
| 40 | int (*getscl) (void *data); |
||
| 41 | |||
| 42 | /* local settings */ |
||
| 43 | int udelay; /* half-clock-cycle time in microsecs */ |
||
| 44 | /* i.e. clock is (500 / udelay) KHz */ |
||
| 45 | int mdelay; /* in millisecs, unused */ |
||
| 46 | int timeout; /* in jiffies */ |
||
| 47 | }; |
||
| 48 | |||
| 49 | #define I2C_BIT_ADAP_MAX 16 |
||
| 50 | |||
| 51 | int i2c_bit_add_bus(struct i2c_adapter *); |
||
| 52 | int i2c_bit_del_bus(struct i2c_adapter *); |
||
| 53 | |||
| 54 | #endif /* _LINUX_I2C_ALGO_BIT_H */ |