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1 /*
2  *  Copyright (c) 1999 by Uros Bizjak <uros@kss-loka.si>
3  *                        Takashi Iwai <tiwai@suse.de>
4  *
5  *  SB16ASP/AWE32 CSP control
6  *
7  *   This program is free software; you can redistribute it and/or modify
8  *   it under the terms of the GNU General Public License as published by
9  *   the Free Software Foundation; either version 2 of the License, or
10  *   (at your option) any later version.
11  *
12  *   This program is distributed in the hope that it will be useful,
13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  *   GNU General Public License for more details.
16  *
17  *   You should have received a copy of the GNU General Public License
18  *   along with this program; if not, write to the Free Software
19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
20  *
21  */
22 #ifndef _UAPI__SOUND_SB16_CSP_H
23 #define _UAPI__SOUND_SB16_CSP_H
24 
25 
26 /* CSP modes */
27 #define SNDRV_SB_CSP_MODE_NONE		0x00
28 #define SNDRV_SB_CSP_MODE_DSP_READ	0x01	/* Record from DSP */
29 #define SNDRV_SB_CSP_MODE_DSP_WRITE	0x02	/* Play to DSP */
30 #define SNDRV_SB_CSP_MODE_QSOUND		0x04	/* QSound */
31 
32 /* CSP load flags */
33 #define SNDRV_SB_CSP_LOAD_FROMUSER	0x01
34 #define SNDRV_SB_CSP_LOAD_INITBLOCK	0x02
35 
36 /* CSP sample width */
37 #define SNDRV_SB_CSP_SAMPLE_8BIT		0x01
38 #define SNDRV_SB_CSP_SAMPLE_16BIT		0x02
39 
40 /* CSP channels */
41 #define SNDRV_SB_CSP_MONO			0x01
42 #define SNDRV_SB_CSP_STEREO		0x02
43 
44 /* CSP rates */
45 #define SNDRV_SB_CSP_RATE_8000		0x01
46 #define SNDRV_SB_CSP_RATE_11025		0x02
47 #define SNDRV_SB_CSP_RATE_22050		0x04
48 #define SNDRV_SB_CSP_RATE_44100		0x08
49 #define SNDRV_SB_CSP_RATE_ALL		0x0f
50 
51 /* CSP running state */
52 #define SNDRV_SB_CSP_ST_IDLE		0x00
53 #define SNDRV_SB_CSP_ST_LOADED		0x01
54 #define SNDRV_SB_CSP_ST_RUNNING		0x02
55 #define SNDRV_SB_CSP_ST_PAUSED		0x04
56 #define SNDRV_SB_CSP_ST_AUTO		0x08
57 #define SNDRV_SB_CSP_ST_QSOUND		0x10
58 
59 /* maximum QSound value (180 degrees right) */
60 #define SNDRV_SB_CSP_QSOUND_MAX_RIGHT	0x20
61 
62 /* maximum microcode RIFF file size */
63 #define SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE	0x3000
64 
65 /* microcode header */
66 struct snd_sb_csp_mc_header {
67 	char codec_name[16];		/* id name of codec */
68 	unsigned short func_req;	/* requested function */
69 };
70 
71 /* microcode to be loaded */
72 struct snd_sb_csp_microcode {
73 	struct snd_sb_csp_mc_header info;
74 	unsigned char data[SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE];
75 };
76 
77 /* start CSP with sample_width in mono/stereo */
78 struct snd_sb_csp_start {
79 	int sample_width;	/* sample width, look above */
80 	int channels;		/* channels, look above */
81 };
82 
83 /* CSP information */
84 struct snd_sb_csp_info {
85 	char codec_name[16];		/* id name of codec */
86 	unsigned short func_nr;		/* function number */
87 	unsigned int acc_format;	/* accepted PCM formats */
88 	unsigned short acc_channels;	/* accepted channels */
89 	unsigned short acc_width;	/* accepted sample width */
90 	unsigned short acc_rates;	/* accepted sample rates */
91 	unsigned short csp_mode;	/* CSP mode, see above */
92 	unsigned short run_channels;	/* current channels  */
93 	unsigned short run_width;	/* current sample width */
94 	unsigned short version;		/* version id: 0x10 - 0x1f */
95 	unsigned short state;		/* state bits */
96 };
97 
98 /* HWDEP controls */
99 /* get CSP information */
100 #define SNDRV_SB_CSP_IOCTL_INFO		_IOR('H', 0x10, struct snd_sb_csp_info)
101 /* load microcode to CSP */
102 /* NOTE: struct snd_sb_csp_microcode overflows the max size (13 bits)
103  * defined for some architectures like MIPS, and it leads to build errors.
104  * (x86 and co have 14-bit size, thus it's valid, though.)
105  * As a workaround for skipping the size-limit check, here we don't use the
106  * normal _IOW() macro but _IOC() with the manual argument.
107  */
108 #define SNDRV_SB_CSP_IOCTL_LOAD_CODE	\
109 	_IOC(_IOC_WRITE, 'H', 0x11, sizeof(struct snd_sb_csp_microcode))
110 /* unload microcode from CSP */
111 #define SNDRV_SB_CSP_IOCTL_UNLOAD_CODE	_IO('H', 0x12)
112 /* start CSP */
113 #define SNDRV_SB_CSP_IOCTL_START		_IOW('H', 0x13, struct snd_sb_csp_start)
114 /* stop CSP */
115 #define SNDRV_SB_CSP_IOCTL_STOP		_IO('H', 0x14)
116 /* pause CSP and DMA transfer */
117 #define SNDRV_SB_CSP_IOCTL_PAUSE		_IO('H', 0x15)
118 /* restart CSP and DMA transfer */
119 #define SNDRV_SB_CSP_IOCTL_RESTART	_IO('H', 0x16)
120 
121 
122 #endif /* _UAPI__SOUND_SB16_CSP_H */
123