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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (c) 1999 by Uros Bizjak <uros@kss-loka.si>
* Takashi Iwai <tiwai@suse.de>
*
* SB16ASP/AWE32 CSP control
*/
#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, snd_pcm_format_t 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 */