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Diffstat (limited to 'include/sound/sb16_csp.h')
| -rw-r--r-- | include/sound/sb16_csp.h | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/include/sound/sb16_csp.h b/include/sound/sb16_csp.h new file mode 100644 index 00000000..af1b49e9 --- /dev/null +++ b/include/sound/sb16_csp.h @@ -0,0 +1,188 @@ +#ifndef __SOUND_SB16_CSP_H +#define __SOUND_SB16_CSP_H + +/* + * 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 + * + */ + +/* CSP modes */ +#define SNDRV_SB_CSP_MODE_NONE 0x00 +#define SNDRV_SB_CSP_MODE_DSP_READ 0x01 /* Record from DSP */ +#define SNDRV_SB_CSP_MODE_DSP_WRITE 0x02 /* Play to DSP */ +#define SNDRV_SB_CSP_MODE_QSOUND 0x04 /* QSound */ + +/* CSP load flags */ +#define SNDRV_SB_CSP_LOAD_FROMUSER 0x01 +#define SNDRV_SB_CSP_LOAD_INITBLOCK 0x02 + +/* CSP sample width */ +#define SNDRV_SB_CSP_SAMPLE_8BIT 0x01 +#define SNDRV_SB_CSP_SAMPLE_16BIT 0x02 + +/* CSP channels */ +#define SNDRV_SB_CSP_MONO 0x01 +#define SNDRV_SB_CSP_STEREO 0x02 + +/* CSP rates */ +#define SNDRV_SB_CSP_RATE_8000 0x01 +#define SNDRV_SB_CSP_RATE_11025 0x02 +#define SNDRV_SB_CSP_RATE_22050 0x04 +#define SNDRV_SB_CSP_RATE_44100 0x08 +#define SNDRV_SB_CSP_RATE_ALL 0x0f + +/* CSP running state */ +#define SNDRV_SB_CSP_ST_IDLE 0x00 +#define SNDRV_SB_CSP_ST_LOADED 0x01 +#define SNDRV_SB_CSP_ST_RUNNING 0x02 +#define SNDRV_SB_CSP_ST_PAUSED 0x04 +#define SNDRV_SB_CSP_ST_AUTO 0x08 +#define SNDRV_SB_CSP_ST_QSOUND 0x10 + +/* maximum QSound value (180 degrees right) */ +#define SNDRV_SB_CSP_QSOUND_MAX_RIGHT 0x20 + +/* maximum microcode RIFF file size */ +#define SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE 0x3000 + +/* microcode header */ +struct snd_sb_csp_mc_header { + char codec_name[16]; /* id name of codec */ + unsigned short func_req; /* requested function */ +}; + +/* microcode to be loaded */ +struct snd_sb_csp_microcode { + struct snd_sb_csp_mc_header info; + unsigned char data[SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE]; +}; + +/* start CSP with sample_width in mono/stereo */ +struct snd_sb_csp_start { + int sample_width; /* sample width, look above */ + int channels; /* channels, look above */ +}; + +/* CSP information */ +struct snd_sb_csp_info { + char codec_name[16]; /* id name of codec */ + unsigned short func_nr; /* function number */ + unsigned int acc_format; /* accepted PCM formats */ + unsigned short acc_channels; /* accepted channels */ + unsigned short acc_width; /* accepted sample width */ + unsigned short acc_rates; /* accepted sample rates */ + unsigned short csp_mode; /* CSP mode, see above */ + unsigned short run_channels; /* current channels */ + unsigned short run_width; /* current sample width */ + unsigned short version; /* version id: 0x10 - 0x1f */ + unsigned short state; /* state bits */ +}; + +/* HWDEP controls */ +/* get CSP information */ +#define SNDRV_SB_CSP_IOCTL_INFO _IOR('H', 0x10, struct snd_sb_csp_info) +/* load microcode to CSP */ +/* NOTE: struct snd_sb_csp_microcode overflows the max size (13 bits) + * defined for some architectures like MIPS, and it leads to build errors. + * (x86 and co have 14-bit size, thus it's valid, though.) + * As a workaround for skipping the size-limit check, here we don't use the + * normal _IOW() macro but _IOC() with the manual argument. + */ +#define SNDRV_SB_CSP_IOCTL_LOAD_CODE \ + _IOC(_IOC_WRITE, 'H', 0x11, sizeof(struct snd_sb_csp_microcode)) +/* unload microcode from CSP */ +#define SNDRV_SB_CSP_IOCTL_UNLOAD_CODE _IO('H', 0x12) +/* start CSP */ +#define SNDRV_SB_CSP_IOCTL_START _IOW('H', 0x13, struct snd_sb_csp_start) +/* stop CSP */ +#define SNDRV_SB_CSP_IOCTL_STOP _IO('H', 0x14) +/* pause CSP and DMA transfer */ +#define SNDRV_SB_CSP_IOCTL_PAUSE _IO('H', 0x15) +/* restart CSP and DMA transfer */ +#define SNDRV_SB_CSP_IOCTL_RESTART _IO('H', 0x16) + +#ifdef __KERNEL__ +#include "sb.h" +#include "hwdep.h" +#include <linux/firmware.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 + +#endif /* __SOUND_SB16_CSP */ |