| 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
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| 2 | /* ------------------------------------------------------------------------- */ |
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| 3 | /* adap-pcf.h i2c driver algorithms for PCF8584 adapters */ |
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| 4 | /* ------------------------------------------------------------------------- */ |
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| 5 | /* Copyright (C) 1995-97 Simon G. Vogl |
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| 6 | 1998-99 Hans Berglund |
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| 7 | |
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| 8 | */ |
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| 9 | /* ------------------------------------------------------------------------- */ |
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| 10 | |
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| 11 | /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even |
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| 12 | Frodo Looijaard <frodol@dds.nl> */ |
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| 13 | |
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| 14 | #ifndef _LINUX_I2C_ALGO_PCF_H |
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| 15 | #define _LINUX_I2C_ALGO_PCF_H |
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| 16 | |
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| 17 | struct i2c_algo_pcf_data { |
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| 18 | void *data; /* private data for lolevel routines */ |
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| 19 | void (*setpcf) (void *data, int ctl, int val); |
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| 20 | int (*getpcf) (void *data, int ctl); |
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| 21 | int (*getown) (void *data); |
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| 22 | int (*getclock) (void *data); |
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| 23 | void (*waitforpin) (void *data); |
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| 24 | |
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| 25 | void (*xfer_begin) (void *data); |
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| 26 | void (*xfer_end) (void *data); |
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| 27 | |
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| 28 | /* Multi-master lost arbitration back-off delay (msecs) |
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| 29 | * This should be set by the bus adapter or knowledgable client |
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| 30 | * if bus is multi-mastered, else zero |
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| 31 | */ |
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| 32 | unsigned long lab_mdelay; |
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| 33 | }; |
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| 34 | |
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| 35 | int i2c_pcf_add_bus(struct i2c_adapter *); |
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| 36 | |
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| 37 | #endif /* _LINUX_I2C_ALGO_PCF_H */ |
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| 38 | |
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