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16216333 | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
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2 | /* ------------------------------------------------------------------------- */ |
3 | /* adap-pcf.h i2c driver algorithms for PCF8584 adapters */ | |
4 | /* ------------------------------------------------------------------------- */ | |
5 | /* Copyright (C) 1995-97 Simon G. Vogl | |
6 | 1998-99 Hans Berglund | |
7 | ||
16216333 | 8 | */ |
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9 | /* ------------------------------------------------------------------------- */ |
10 | ||
121e70b6 | 11 | /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even |
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12 | Frodo Looijaard <frodol@dds.nl> */ |
13 | ||
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14 | #ifndef _LINUX_I2C_ALGO_PCF_H |
15 | #define _LINUX_I2C_ALGO_PCF_H | |
16 | ||
17 | struct i2c_algo_pcf_data { | |
18 | void *data; /* private data for lolevel routines */ | |
19 | void (*setpcf) (void *data, int ctl, int val); | |
20 | int (*getpcf) (void *data, int ctl); | |
21 | int (*getown) (void *data); | |
22 | int (*getclock) (void *data); | |
08e5338d | 23 | void (*waitforpin) (void *data); |
1da177e4 | 24 | |
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25 | void (*xfer_begin) (void *data); |
26 | void (*xfer_end) (void *data); | |
27 | ||
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28 | /* Multi-master lost arbitration back-off delay (msecs) |
29 | * This should be set by the bus adapter or knowledgable client | |
30 | * if bus is multi-mastered, else zero | |
31 | */ | |
32 | unsigned long lab_mdelay; | |
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33 | }; |
34 | ||
1da177e4 | 35 | int i2c_pcf_add_bus(struct i2c_adapter *); |
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36 | |
37 | #endif /* _LINUX_I2C_ALGO_PCF_H */ |