/*
   *  Copyright (c) 1999 by Uros Bizjak <uros@kss-loka.si>
   *                        Takashi Iwai <tiwai@suse.de>
   *
   *  SB16ASP/AWE32 CSP control
   *
   *   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
   *
   */
  #ifndef __SOUND_SB16_CSP_H
  #define __SOUND_SB16_CSP_H
  
  #include <sound/sb.h>
  #include <sound/hwdep.h>
  #include <linux/firmware.h>
  #include <uapi/sound/sb16_csp.h>
  
  struct snd_sb_csp;
  
  /* indices for the known CSP programs */
  enum {
  	CSP_PROGRAM_MULAW,
  	CSP_PROGRAM_ALAW,
  	CSP_PROGRAM_ADPCM_INIT,
  	CSP_PROGRAM_ADPCM_PLAYBACK,
  	CSP_PROGRAM_ADPCM_CAPTURE,
  
  	CSP_PROGRAM_COUNT
  };
  
  /*
   * CSP operators
   */
  struct snd_sb_csp_ops {
  	int (*csp_use) (struct snd_sb_csp * p);
  	int (*csp_unuse) (struct snd_sb_csp * p);
  	int (*csp_autoload) (struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode);
  	int (*csp_start) (struct snd_sb_csp * p, int sample_width, int channels);
  	int (*csp_stop) (struct snd_sb_csp * p);
  	int (*csp_qsound_transfer) (struct snd_sb_csp * p);
  };
  
  /*
   * CSP private data
   */
  struct snd_sb_csp {
  	struct snd_sb *chip;		/* SB16 DSP */
  	int used;		/* usage flag - exclusive */
  	char codec_name[16];	/* name of codec */
  	unsigned short func_nr;	/* function number */
  	unsigned int acc_format;	/* accepted PCM formats */
  	int acc_channels;	/* accepted channels */
  	int acc_width;		/* accepted sample width */
  	int acc_rates;		/* accepted sample rates */
  	int mode;		/* MODE */
  	int run_channels;	/* current CSP channels */
  	int run_width;		/* current sample width */
  	int version;		/* CSP version (0x10 - 0x1f) */
  	int running;		/* running state */
  
  	struct snd_sb_csp_ops ops;	/* operators */
  
  	spinlock_t q_lock;	/* locking */
  	int q_enabled;		/* enabled flag */
  	int qpos_left;		/* left position */
  	int qpos_right;		/* right position */
  	int qpos_changed;	/* position changed flag */
  
  	struct snd_kcontrol *qsound_switch;
  	struct snd_kcontrol *qsound_space;
  
  	struct mutex access_mutex;	/* locking */
  
  	const struct firmware *csp_programs[CSP_PROGRAM_COUNT];
  };
  
  int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep);
  #endif /* __SOUND_SB16_CSP */