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Diffstat (limited to '')
| -rw-r--r-- | include/sound/sb16_csp.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/include/sound/sb16_csp.h b/include/sound/sb16_csp.h new file mode 100644 index 000000000..cafd415e2 --- /dev/null +++ b/include/sound/sb16_csp.h @@ -0,0 +1,76 @@ +/* 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 */ |