0,0 → 1,51 |
/* ------------------------------------------------------------------------- */ |
/* i2c-algo-bit.h i2c driver algorithms for bit-shift adapters */ |
/* ------------------------------------------------------------------------- */ |
/* Copyright (C) 1995-99 Simon G. Vogl |
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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> */ |
|
#ifndef _LINUX_I2C_ALGO_BIT_H |
#define _LINUX_I2C_ALGO_BIT_H |
|
/* --- Defines for bit-adapters --------------------------------------- */ |
/* |
* This struct contains the hw-dependent functions of bit-style adapters to |
* manipulate the line states, and to init any hw-specific features. This is |
* only used if you have more than one hw-type of adapter running. |
*/ |
struct i2c_algo_bit_data { |
void *data; /* private data for lowlevel routines */ |
void (*setsda) (void *data, int state); |
void (*setscl) (void *data, int state); |
int (*getsda) (void *data); |
int (*getscl) (void *data); |
|
/* local settings */ |
int udelay; /* half clock cycle time in us, |
minimum 2 us for fast-mode I2C, |
minimum 5 us for standard-mode I2C and SMBus, |
maximum 50 us for SMBus */ |
int timeout; /* in jiffies */ |
}; |
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int i2c_bit_add_bus(struct i2c_adapter *); |
int i2c_bit_add_numbered_bus(struct i2c_adapter *); |
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#endif /* _LINUX_I2C_ALGO_BIT_H */ |