/*
   *  Driver for the Conexant CX25821 PCIe bridge
   *
   *  Copyright (C) 2009 Conexant Systems Inc.
   *  Authors  <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
   *
   *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
   */
  
  #ifndef __CX25821_AUDIO_H__
  #define __CX25821_AUDIO_H__

  #define USE_RISC_NOOP		1
  #define LINES_PER_BUFFER	15
  #define AUDIO_LINE_SIZE		128

  /* Number of buffer programs to use at once. */

  #define NUMBER_OF_PROGRAMS	8

  /*

   * Max size of the RISC program for a buffer. - worst case is 2 writes per line
   * Space is also added for the 4 no-op instructions added on the end.
   */

  #ifndef USE_RISC_NOOP

  #define MAX_BUFFER_PROGRAM_SIZE						\
  	(2 * LINES_PER_BUFFER * RISC_WRITE_INSTRUCTION_SIZE +		\
  	 RISC_WRITECR_INSTRUCTION_SIZE * 4)

  #endif

  /* MAE 12 July 2005 Try to use NOOP RISC instruction instead */

  #ifdef USE_RISC_NOOP

  #define MAX_BUFFER_PROGRAM_SIZE						\
  	(2 * LINES_PER_BUFFER * RISC_WRITE_INSTRUCTION_SIZE +		\
  	 RISC_NOOP_INSTRUCTION_SIZE * 4)

  #endif

  /* Sizes of various instructions in bytes.  Used when adding instructions. */

  #define RISC_WRITE_INSTRUCTION_SIZE	12
  #define RISC_JUMP_INSTRUCTION_SIZE	12
  #define RISC_SKIP_INSTRUCTION_SIZE	4
  #define RISC_SYNC_INSTRUCTION_SIZE	4
  #define RISC_WRITECR_INSTRUCTION_SIZE	16
  #define RISC_NOOP_INSTRUCTION_SIZE	4
  
  #define MAX_AUDIO_DMA_BUFFER_SIZE					\
  	(MAX_BUFFER_PROGRAM_SIZE * NUMBER_OF_PROGRAMS +			\
  	 RISC_SYNC_INSTRUCTION_SIZE)

  
  #endif