/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */

/*

 *  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

 *

 */

#ifndef _UAPI__SOUND_SB16_CSP_H

#define _UAPI__SOUND_SB16_CSP_H

/* 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)

#endif /* _UAPI__SOUND_SB16_CSP_H */