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170 | giacomo | 1 | /* ------------------------------------------------------------------------- */ |
2 | /* i2c-algo-bit.h i2c driver algorithms for bit-shift adapters */ |
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3 | /* ------------------------------------------------------------------------- */ |
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4 | /* Copyright (C) 1995-99 Simon G. Vogl |
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5 | |||
6 | This program is free software; you can redistribute it and/or modify |
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7 | it under the terms of the GNU General Public License as published by |
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8 | the Free Software Foundation; either version 2 of the License, or |
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9 | (at your option) any later version. |
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10 | |||
11 | This program is distributed in the hope that it will be useful, |
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12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | GNU General Public License for more details. |
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15 | |||
16 | You should have received a copy of the GNU General Public License |
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17 | along with this program; if not, write to the Free Software |
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18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
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19 | /* ------------------------------------------------------------------------- */ |
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20 | |||
21 | /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even |
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22 | Frodo Looijaard <frodol@dds.nl> */ |
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23 | |||
24 | /* $Id: i2c-algo-bit.h,v 1.1 2003-05-22 10:25:25 giacomo Exp $ */ |
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25 | |||
26 | #ifndef I2C_ALGO_BIT_H |
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27 | #define I2C_ALGO_BIT_H 1 |
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28 | |||
29 | #include "drivers/i2c.h" |
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30 | |||
31 | /* --- Defines for bit-adapters --------------------------------------- */ |
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32 | /* |
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33 | * This struct contains the hw-dependent functions of bit-style adapters to |
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34 | * manipulate the line states, and to init any hw-specific features. This is |
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35 | * only used if you have more than one hw-type of adapter running. |
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36 | */ |
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37 | struct i2c_algo_bit_data { |
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38 | void *data; /* private data for lowlevel routines */ |
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39 | void (*setsda) (void *data, int state); |
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40 | void (*setscl) (void *data, int state); |
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41 | int (*getsda) (void *data); |
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42 | int (*getscl) (void *data); |
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43 | |||
44 | /* local settings */ |
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45 | int udelay; |
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46 | int mdelay; |
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47 | int timeout; |
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48 | }; |
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49 | |||
50 | #define I2C_BIT_ADAP_MAX 16 |
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51 | |||
52 | int i2c_bit_add_bus(struct i2c_adapter *); |
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53 | int i2c_bit_del_bus(struct i2c_adapter *); |
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54 | |||
55 | #endif /* I2C_ALGO_BIT_H */ |