1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Copyright (c) 1999 by Uros Bizjak <uros@kss-loka.si> 4 * Takashi Iwai <tiwai@suse.de> 5 * 6 * SB16ASP/AWE32 CSP control 7 */ 8 #ifndef __SOUND_SB16_CSP_H 9 #define __SOUND_SB16_CSP_H 10 11 #include <sound/sb.h> 12 #include <sound/hwdep.h> 13 #include <linux/firmware.h> 14 #include <uapi/sound/sb16_csp.h> 15 16 struct snd_sb_csp; 17 18 /* indices for the known CSP programs */ 19 enum { 20 CSP_PROGRAM_MULAW, 21 CSP_PROGRAM_ALAW, 22 CSP_PROGRAM_ADPCM_INIT, 23 CSP_PROGRAM_ADPCM_PLAYBACK, 24 CSP_PROGRAM_ADPCM_CAPTURE, 25 26 CSP_PROGRAM_COUNT 27 }; 28 29 /* 30 * CSP operators 31 */ 32 struct snd_sb_csp_ops { 33 int (*csp_use) (struct snd_sb_csp * p); 34 int (*csp_unuse) (struct snd_sb_csp * p); 35 int (*csp_autoload) (struct snd_sb_csp * p, snd_pcm_format_t pcm_sfmt, int play_rec_mode); 36 int (*csp_start) (struct snd_sb_csp * p, int sample_width, int channels); 37 int (*csp_stop) (struct snd_sb_csp * p); 38 int (*csp_qsound_transfer) (struct snd_sb_csp * p); 39 }; 40 41 /* 42 * CSP private data 43 */ 44 struct snd_sb_csp { 45 struct snd_sb *chip; /* SB16 DSP */ 46 int used; /* usage flag - exclusive */ 47 char codec_name[16]; /* name of codec */ 48 unsigned short func_nr; /* function number */ 49 unsigned int acc_format; /* accepted PCM formats */ 50 int acc_channels; /* accepted channels */ 51 int acc_width; /* accepted sample width */ 52 int acc_rates; /* accepted sample rates */ 53 int mode; /* MODE */ 54 int run_channels; /* current CSP channels */ 55 int run_width; /* current sample width */ 56 int version; /* CSP version (0x10 - 0x1f) */ 57 int running; /* running state */ 58 59 struct snd_sb_csp_ops ops; /* operators */ 60 61 spinlock_t q_lock; /* locking */ 62 int q_enabled; /* enabled flag */ 63 int qpos_left; /* left position */ 64 int qpos_right; /* right position */ 65 int qpos_changed; /* position changed flag */ 66 67 struct snd_kcontrol *qsound_switch; 68 struct snd_kcontrol *qsound_space; 69 70 struct mutex access_mutex; /* locking */ 71 72 const struct firmware *csp_programs[CSP_PROGRAM_COUNT]; 73 }; 74 75 int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep); 76 #endif /* __SOUND_SB16_CSP */ 77