diff options
Diffstat (limited to 'kernel/include/linux/i2c-algo-pcf.h')
| -rw-r--r-- | kernel/include/linux/i2c-algo-pcf.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/kernel/include/linux/i2c-algo-pcf.h b/kernel/include/linux/i2c-algo-pcf.h new file mode 100644 index 000000000..538e8f41a --- /dev/null +++ b/kernel/include/linux/i2c-algo-pcf.h @@ -0,0 +1,49 @@ +/* ------------------------------------------------------------------------- */ +/* adap-pcf.h i2c driver algorithms for PCF8584 adapters */ +/* ------------------------------------------------------------------------- */ +/* Copyright (C) 1995-97 Simon G. Vogl + 1998-99 Hans Berglund + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, + MA 02110-1301 USA. */ +/* ------------------------------------------------------------------------- */ + +/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even + Frodo Looijaard <frodol@dds.nl> */ + +#ifndef _LINUX_I2C_ALGO_PCF_H +#define _LINUX_I2C_ALGO_PCF_H + +struct i2c_algo_pcf_data { + void *data; /* private data for lolevel routines */ + void (*setpcf) (void *data, int ctl, int val); + int (*getpcf) (void *data, int ctl); + int (*getown) (void *data); + int (*getclock) (void *data); + void (*waitforpin) (void *data); + + void (*xfer_begin) (void *data); + void (*xfer_end) (void *data); + + /* Multi-master lost arbitration back-off delay (msecs) + * This should be set by the bus adapter or knowledgable client + * if bus is multi-mastered, else zero + */ + unsigned long lab_mdelay; +}; + +int i2c_pcf_add_bus(struct i2c_adapter *); + +#endif /* _LINUX_I2C_ALGO_PCF_H */ |