CoCalc -- sb16

GitHub Repository: torvalds/linux
Path: blob/master/include/uapi/sound/sb16_csp.h
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/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
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/*
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 *  Copyright (c) 1999 by Uros Bizjak <[email protected]>
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 *                        Takashi Iwai <[email protected]>
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 *
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 *  SB16ASP/AWE32 CSP control
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 */
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#ifndef _UAPI__SOUND_SB16_CSP_H
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#define _UAPI__SOUND_SB16_CSP_H
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/* CSP modes */
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#define SNDRV_SB_CSP_MODE_NONE		0x00
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#define SNDRV_SB_CSP_MODE_DSP_READ	0x01	/* Record from DSP */
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#define SNDRV_SB_CSP_MODE_DSP_WRITE	0x02	/* Play to DSP */
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#define SNDRV_SB_CSP_MODE_QSOUND		0x04	/* QSound */
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/* CSP load flags */
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#define SNDRV_SB_CSP_LOAD_FROMUSER	0x01
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#define SNDRV_SB_CSP_LOAD_INITBLOCK	0x02
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/* CSP sample width */
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#define SNDRV_SB_CSP_SAMPLE_8BIT		0x01
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#define SNDRV_SB_CSP_SAMPLE_16BIT		0x02
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/* CSP channels */
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#define SNDRV_SB_CSP_MONO			0x01
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#define SNDRV_SB_CSP_STEREO		0x02
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/* CSP rates */
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#define SNDRV_SB_CSP_RATE_8000		0x01
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#define SNDRV_SB_CSP_RATE_11025		0x02
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#define SNDRV_SB_CSP_RATE_22050		0x04
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#define SNDRV_SB_CSP_RATE_44100		0x08
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#define SNDRV_SB_CSP_RATE_ALL		0x0f
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/* CSP running state */
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#define SNDRV_SB_CSP_ST_IDLE		0x00
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#define SNDRV_SB_CSP_ST_LOADED		0x01
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#define SNDRV_SB_CSP_ST_RUNNING		0x02
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#define SNDRV_SB_CSP_ST_PAUSED		0x04
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#define SNDRV_SB_CSP_ST_AUTO		0x08
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#define SNDRV_SB_CSP_ST_QSOUND		0x10
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/* maximum QSound value (180 degrees right) */
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#define SNDRV_SB_CSP_QSOUND_MAX_RIGHT	0x20
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/* maximum microcode RIFF file size */
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#define SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE	0x3000
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/* microcode header */
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struct snd_sb_csp_mc_header {
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	char codec_name[16];		/* id name of codec */
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	unsigned short func_req;	/* requested function */
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};
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/* microcode to be loaded */
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struct snd_sb_csp_microcode {
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	struct snd_sb_csp_mc_header info;
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	unsigned char data[SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE];
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};
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/* start CSP with sample_width in mono/stereo */
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struct snd_sb_csp_start {
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	int sample_width;	/* sample width, look above */
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	int channels;		/* channels, look above */
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};
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/* CSP information */
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struct snd_sb_csp_info {
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	char codec_name[16];		/* id name of codec */
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	unsigned short func_nr;		/* function number */
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	unsigned int acc_format;	/* accepted PCM formats */
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	unsigned short acc_channels;	/* accepted channels */
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	unsigned short acc_width;	/* accepted sample width */
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	unsigned short acc_rates;	/* accepted sample rates */
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	unsigned short csp_mode;	/* CSP mode, see above */
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	unsigned short run_channels;	/* current channels  */
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	unsigned short run_width;	/* current sample width */
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	unsigned short version;		/* version id: 0x10 - 0x1f */
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	unsigned short state;		/* state bits */
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};
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/* HWDEP controls */
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/* get CSP information */
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#define SNDRV_SB_CSP_IOCTL_INFO		_IOR('H', 0x10, struct snd_sb_csp_info)
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/* load microcode to CSP */
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/* NOTE: struct snd_sb_csp_microcode overflows the max size (13 bits)
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 * defined for some architectures like MIPS, and it leads to build errors.
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 * (x86 and co have 14-bit size, thus it's valid, though.)
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 * As a workaround for skipping the size-limit check, here we don't use the
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 * normal _IOW() macro but _IOC() with the manual argument.
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 */
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#define SNDRV_SB_CSP_IOCTL_LOAD_CODE	\
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	_IOC(_IOC_WRITE, 'H', 0x11, sizeof(struct snd_sb_csp_microcode))
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/* unload microcode from CSP */
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#define SNDRV_SB_CSP_IOCTL_UNLOAD_CODE	_IO('H', 0x12)
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/* start CSP */
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#define SNDRV_SB_CSP_IOCTL_START		_IOW('H', 0x13, struct snd_sb_csp_start)
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/* stop CSP */
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#define SNDRV_SB_CSP_IOCTL_STOP		_IO('H', 0x14)
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/* pause CSP and DMA transfer */
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#define SNDRV_SB_CSP_IOCTL_PAUSE		_IO('H', 0x15)
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/* restart CSP and DMA transfer */
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#define SNDRV_SB_CSP_IOCTL_RESTART	_IO('H', 0x16)
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#endif /* _UAPI__SOUND_SB16_CSP_H */
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