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TOMOYO Linux Cross Reference
Linux/include/uapi/sound/sb16_csp.h

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  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 */
124 

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