include/uapi/sound/sb16_csp.h

   1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
   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  *   This program is free software; you can redistribute it and/or modify
   9  *   it under the terms of the GNU General Public License as published by
  10  *   the Free Software Foundation; either version 2 of the License, or
  11  *   (at your option) any later version.
  12  *
  13  *   This program is distributed in the hope that it will be useful,
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *   GNU General Public License for more details.
  17  *
  18  *   You should have received a copy of the GNU General Public License
  19  *   along with this program; if not, write to the Free Software
  20  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21  *
  22  */
  23 #ifndef _UAPI__SOUND_SB16_CSP_H
  24 #define _UAPI__SOUND_SB16_CSP_H
  25
  26
  27 /* CSP modes */
  28 #define SNDRV_SB_CSP_MODE_NONE          0x00
  29 #define SNDRV_SB_CSP_MODE_DSP_READ      0x01    /* Record from DSP */
  30 #define SNDRV_SB_CSP_MODE_DSP_WRITE     0x02    /* Play to DSP */
  31 #define SNDRV_SB_CSP_MODE_QSOUND                0x04    /* QSound */
  32
  33 /* CSP load flags */
  34 #define SNDRV_SB_CSP_LOAD_FROMUSER      0x01
  35 #define SNDRV_SB_CSP_LOAD_INITBLOCK     0x02
  36
  37 /* CSP sample width */
  38 #define SNDRV_SB_CSP_SAMPLE_8BIT                0x01
  39 #define SNDRV_SB_CSP_SAMPLE_16BIT               0x02
  40
  41 /* CSP channels */
  42 #define SNDRV_SB_CSP_MONO                       0x01
  43 #define SNDRV_SB_CSP_STEREO             0x02
  44
  45 /* CSP rates */
  46 #define SNDRV_SB_CSP_RATE_8000          0x01
  47 #define SNDRV_SB_CSP_RATE_11025         0x02
  48 #define SNDRV_SB_CSP_RATE_22050         0x04
  49 #define SNDRV_SB_CSP_RATE_44100         0x08
  50 #define SNDRV_SB_CSP_RATE_ALL           0x0f
  51
  52 /* CSP running state */
  53 #define SNDRV_SB_CSP_ST_IDLE            0x00
  54 #define SNDRV_SB_CSP_ST_LOADED          0x01
  55 #define SNDRV_SB_CSP_ST_RUNNING         0x02
  56 #define SNDRV_SB_CSP_ST_PAUSED          0x04
  57 #define SNDRV_SB_CSP_ST_AUTO            0x08
  58 #define SNDRV_SB_CSP_ST_QSOUND          0x10
  59
  60 /* maximum QSound value (180 degrees right) */
  61 #define SNDRV_SB_CSP_QSOUND_MAX_RIGHT   0x20
  62
  63 /* maximum microcode RIFF file size */
  64 #define SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE    0x3000
  65
  66 /* microcode header */
  67 struct snd_sb_csp_mc_header {
  68         char codec_name[16];            /* id name of codec */
  69         unsigned short func_req;        /* requested function */
  70 };
  71
  72 /* microcode to be loaded */
  73 struct snd_sb_csp_microcode {
  74         struct snd_sb_csp_mc_header info;
  75         unsigned char data[SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE];
  76 };
  77
  78 /* start CSP with sample_width in mono/stereo */
  79 struct snd_sb_csp_start {
  80         int sample_width;       /* sample width, look above */
  81         int channels;           /* channels, look above */
  82 };
  83
  84 /* CSP information */
  85 struct snd_sb_csp_info {
  86         char codec_name[16];            /* id name of codec */
  87         unsigned short func_nr;         /* function number */
  88         unsigned int acc_format;        /* accepted PCM formats */
  89         unsigned short acc_channels;    /* accepted channels */
  90         unsigned short acc_width;       /* accepted sample width */
  91         unsigned short acc_rates;       /* accepted sample rates */
  92         unsigned short csp_mode;        /* CSP mode, see above */
  93         unsigned short run_channels;    /* current channels  */
  94         unsigned short run_width;       /* current sample width */
  95         unsigned short version;         /* version id: 0x10 - 0x1f */
  96         unsigned short state;           /* state bits */
  97 };
  98
  99 /* HWDEP controls */
 100 /* get CSP information */
 101 #define SNDRV_SB_CSP_IOCTL_INFO         _IOR('H', 0x10, struct snd_sb_csp_info)
 102 /* load microcode to CSP */
 103 /* NOTE: struct snd_sb_csp_microcode overflows the max size (13 bits)
 104  * defined for some architectures like MIPS, and it leads to build errors.
 105  * (x86 and co have 14-bit size, thus it's valid, though.)
 106  * As a workaround for skipping the size-limit check, here we don't use the
 107  * normal _IOW() macro but _IOC() with the manual argument.
 108  */
 109 #define SNDRV_SB_CSP_IOCTL_LOAD_CODE    \
 110         _IOC(_IOC_WRITE, 'H', 0x11, sizeof(struct snd_sb_csp_microcode))
 111 /* unload microcode from CSP */
 112 #define SNDRV_SB_CSP_IOCTL_UNLOAD_CODE  _IO('H', 0x12)
 113 /* start CSP */
 114 #define SNDRV_SB_CSP_IOCTL_START                _IOW('H', 0x13, struct snd_sb_csp_start)
 115 /* stop CSP */
 116 #define SNDRV_SB_CSP_IOCTL_STOP         _IO('H', 0x14)
 117 /* pause CSP and DMA transfer */
 118 #define SNDRV_SB_CSP_IOCTL_PAUSE                _IO('H', 0x15)
 119 /* restart CSP and DMA transfer */
 120 #define SNDRV_SB_CSP_IOCTL_RESTART      _IO('H', 0x16)
 121
 122
 123 #endif /* _UAPI__SOUND_SB16_CSP_H */