drivers/i2c/busses/i2c-mcf.h

   1 /*
   2     i2c-mcf5282.h - header file for i2c-mcf5282.c
   3
   4     Copyright (c) 2005, Derek CL Cheung <derek.cheung@sympatico.ca>
   5                                         <http://www3.sympatico.ca/derek.cheung>
   6
   7     Copyright (c) 2006, emlix and Freescale
   8                         Sebastian Hess <sh@emlix.com>
   9                         Yaroslav Vinogradov <yaroslav.vinogradov@freescale.com>
  10
  11     This program is free software; you can redistribute it and/or modify
  12     it under the terms of the GNU General Public License as published by
  13     the Free Software Foundation; either version 2 of the License, or
  14     (at your option) any later version.
  15
  16     This program is distributed in the hope that it will be useful,
  17     but WITHOUT ANY WARRANTY; without even the implied warranty of
  18     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19     GNU General Public License for more details.
  20
  21     You should have received a copy of the GNU General Public License
  22     along with this program; if not, write to the Free Software
  23     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24
  25     Changes:
  26     v0.1        26 March 2005
  27                 Initial Release - developed on uClinux with 2.6.9 kernel
  28     v0.2        29 May 2006
  29                 Modified to be more generic and added support for
  30                 i2c_master_xfer
  31 */
  32
  33
  34 #ifndef __I2C_MCF5282_H__
  35 #define __I2C_MCF5282_H__
  36
  37 enum I2C_START_TYPE { FIRST_START, REPEAT_START };
  38 enum I2C_ACK_TYPE { ACK, NACK};
  39
  40 /* Function prototypes */
  41 static u32 coldfire_func(struct i2c_adapter *adapter);
  42 static s32 coldfire_i2c_access(struct i2c_adapter *adap, u16 address,
  43                               unsigned short flags, char read_write,
  44                               u8 command, int size, union i2c_smbus_data *data);
  45 static int coldfire_write_data(const u8 data);
  46 static int coldfire_i2c_start(const char read_write, const u16 target_address, const enum I2C_START_TYPE i2c_start);
  47 static int coldfire_read_data(u8 * const rxData, const enum I2C_ACK_TYPE ackType);
  48 static int coldfire_i2c_master(struct i2c_adapter *adap,struct i2c_msg *msgs, int num);
  49 void dumpReg(char *, u16 addr, u8 data);
  50
  51 /********************************************************************/
  52 #endif /*  __I2C_MCF5282_H__ */