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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/i2c-algo-bit.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/linux/i2c-algo-bit.h')
-rw-r--r--include/linux/i2c-algo-bit.h54
1 files changed, 54 insertions, 0 deletions
diff --git a/include/linux/i2c-algo-bit.h b/include/linux/i2c-algo-bit.h
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@@ -0,0 +1,54 @@
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 1.10 2003/01/21 08:08:16 kmalkki 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 */
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; /* 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
51int i2c_bit_add_bus(struct i2c_adapter *);
52int i2c_bit_del_bus(struct i2c_adapter *);
53
54#endif /* _LINUX_I2C_ALGO_BIT_H */