sys/arch/arm/at91/at91twivar.h

   1 /*      $Id: at91twivar.h,v 1.2 2008/07/03 01:15:39 matt Exp $  */
   2 /*      $NetBSD$        */
   3
   4 /*-
   5  * Copyright (c) 2007 Embedtronics Oy. All rights reserved.
   6  *
   7  * Based on arch/macppc/dev/ki2c.c,
   8  * Copyright (c) 2001 Tsubai Masanari.  All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #ifndef _AT91TWIVAR_H_
  34 #define _AT91TWIVAR_H_  1
  35
  36 struct at91twi_softc {
  37         device_t                sc_dev;         /* generic device       */
  38         bus_space_tag_t         sc_iot;         /* I/O space tag        */
  39         bus_space_handle_t      sc_ioh;         /* I/O space handle     */
  40
  41         int                     sc_pid;         /* peripheral id        */
  42         struct i2c_controller   sc_i2c;         /* I2C device desc      */
  43         kmutex_t                sc_buslock;     /* bus lock             */
  44
  45         void                    *sc_ih;         /* interrupt handle     */
  46
  47         int                     sc_flags;
  48 #define I2C_BUSY        0x0001
  49 #define I2C_READING     0x0002
  50 #define I2C_ERROR       0x8000
  51         u_char                  *sc_data;
  52         int                     sc_resid;
  53 };
  54
  55 #endif  // !_AT91TWIVAR_H_