firmware/target/arm/s3c2440/i2c-s3c2440.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2007 by Michael Sevakis
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22 /* chip-specific i2c functions */
  23
  24 /* IICCON */
  25 #define I2C_ACKGEN          (1 << 7)
  26 #define I2C_TXCLK_512       (1 << 6)
  27 #define I2C_TXRX_INTENB     (1 << 5)
  28 #define I2C_TXRX_INTPND     (1 << 4)
  29
  30 /* IICSTAT */
  31 #define I2C_MODE_MASTER     (2 << 6)
  32 #define I2C_MODE_TX         (1 << 6)
  33 #define I2C_BUSY            (1 << 5)
  34 #define I2C_START           (1 << 5)
  35 #define I2C_RXTX_ENB        (1 << 4)
  36 #define I2C_BUS_ARB_FAILED  (1 << 3)
  37 #define I2C_S_ADDR_STAT     (1 << 2)
  38 #define I2C_S_ADDR_MATCH    (1 << 1)
  39 #define I2C_ACK_L           (1 << 0)
  40
  41 /* IICLC */
  42 #define I2C_FLT_ENB         (1 << 2)
  43
  44 void i2c_init(void);
  45 void i2c_write(int addr, const unsigned char *data, int count);
  46