src/add-ons/kernel/drivers/dvb/cx23882/i2c_core.h

   1 /*
   2  * Copyright (c) 2004-2007 Marcus Overhagen <marcus@overhagen.de>
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without restriction,
   7  * including without limitation the rights to use, copy, modify,
   8  * merge, publish, distribute, sublicense, and/or sell copies of
   9  * the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  17  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  19  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #ifndef __I2C_CORE_H
  26 #define __I2C_CORE_H
  27
  28 #include <SupportDefs.h>
  29
  30 typedef void (*i2c_set_scl)(void *cookie, int state);
  31 typedef void (*i2c_set_sda)(void *cookie, int state);
  32 typedef int  (*i2c_get_scl)(void *cookie);
  33 typedef int  (*i2c_get_sda)(void *cookie);
  34
  35 struct _i2c_bus;
  36 typedef struct _i2c_bus i2c_bus;
  37
  38 i2c_bus *i2c_create_bus(void *cookie,
  39                                                 int freqency,
  40                                                 bigtime_t timeout,
  41                                                 i2c_set_scl set_scl,
  42                                                 i2c_set_sda set_sda,
  43                                                 i2c_get_scl get_scl,
  44                                                 i2c_get_sda get_sda);
  45
  46 void i2c_delete_bus(i2c_bus *bus);
  47
  48 status_t i2c_read(i2c_bus *bus, int address, void *data, int size);
  49 status_t i2c_write(i2c_bus *bus, int address, const void *data, int size);
  50
  51 status_t i2c_xfer(i2c_bus *bus, int address,
  52                                   const void *write_data, int write_size,
  53                                   void *read_data, int read_size);
  54
  55 #endif