root/i2c/trunk/kernel/i2c-algo-bit.h @ 3330

Revision 3330, 2.0 KB (checked in by kmalkki, 15 years ago)

(Kyösti)

  • Changed the way i2c_adapter extends for different algorithms

Algorithm low-level data is now accessed via i2c_adapter->algo_data.

  • Removed client_(un)register hooks in algorithm struct and drivers
  • Added client_(un)register to adapter struct
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
Line 
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#ifndef I2C_ALGO_BIT_H
25#define I2C_ALGO_BIT_H 1
26
27#include "i2c.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 */
35struct 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;
44        int mdelay;
45        int timeout;
46};
47
48#define I2C_BIT_ADAP_MAX        16
49
50int i2c_bit_add_bus(struct i2c_adapter *);
51int i2c_bit_del_bus(struct i2c_adapter *);
52
53#endif /* I2C_ALGO_BIT_H */
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