38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/* ------------------------------------------------------------------------- */
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/* adap-pcf.h i2c driver algorithms for PCF8584 adapters */
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/* ------------------------------------------------------------------------- */
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/* Copyright (C) 1995-97 Simon G. Vogl
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1998-99 Hans Berglund
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*/
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/* ------------------------------------------------------------------------- */
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/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
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Frodo Looijaard <frodol@dds.nl> */
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#ifndef _LINUX_I2C_ALGO_PCF_H
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#define _LINUX_I2C_ALGO_PCF_H
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struct i2c_algo_pcf_data {
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void *data; /* private data for lolevel routines */
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void (*setpcf) (void *data, int ctl, int val);
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int (*getpcf) (void *data, int ctl);
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int (*getown) (void *data);
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int (*getclock) (void *data);
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void (*waitforpin) (void *data);
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void (*xfer_begin) (void *data);
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void (*xfer_end) (void *data);
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/* Multi-master lost arbitration back-off delay (msecs)
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* This should be set by the bus adapter or knowledgable client
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* if bus is multi-mastered, else zero
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*/
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unsigned long lab_mdelay;
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};
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int i2c_pcf_add_bus(struct i2c_adapter *);
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#endif /* _LINUX_I2C_ALGO_PCF_H */
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