xref: /linux/include/sound/minors.h (revision 1a59d1b8)
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 #ifndef __SOUND_MINORS_H
3 #define __SOUND_MINORS_H
4 
5 /*
6  *  MINOR numbers
7  */
8 
9 #define SNDRV_OS_MINORS			256
10 
11 #define SNDRV_MINOR_DEVICES		32
12 #define SNDRV_MINOR_CARD(minor)		((minor) >> 5)
13 #define SNDRV_MINOR_DEVICE(minor)	((minor) & 0x001f)
14 #define SNDRV_MINOR(card, dev)		(((card) << 5) | (dev))
15 
16 /* these minors can still be used for autoloading devices (/dev/aload*) */
17 #define SNDRV_MINOR_CONTROL		0	/* 0 */
18 #define SNDRV_MINOR_GLOBAL		1	/* 1 */
19 #define SNDRV_MINOR_SEQUENCER		1	/* SNDRV_MINOR_GLOBAL + 0 * 32 */
20 #define SNDRV_MINOR_TIMER		33	/* SNDRV_MINOR_GLOBAL + 1 * 32 */
21 
22 #ifndef CONFIG_SND_DYNAMIC_MINORS
23 #define SNDRV_MINOR_COMPRESS		2	/* 2 - 3 */
24 #define SNDRV_MINOR_HWDEP		4	/* 4 - 7 */
25 #define SNDRV_MINOR_RAWMIDI		8	/* 8 - 15 */
26 #define SNDRV_MINOR_PCM_PLAYBACK	16	/* 16 - 23 */
27 #define SNDRV_MINOR_PCM_CAPTURE		24	/* 24 - 31 */
28 
29 /* same as first respective minor number to make minor allocation easier */
30 #define SNDRV_DEVICE_TYPE_CONTROL	SNDRV_MINOR_CONTROL
31 #define SNDRV_DEVICE_TYPE_HWDEP		SNDRV_MINOR_HWDEP
32 #define SNDRV_DEVICE_TYPE_RAWMIDI	SNDRV_MINOR_RAWMIDI
33 #define SNDRV_DEVICE_TYPE_PCM_PLAYBACK	SNDRV_MINOR_PCM_PLAYBACK
34 #define SNDRV_DEVICE_TYPE_PCM_CAPTURE	SNDRV_MINOR_PCM_CAPTURE
35 #define SNDRV_DEVICE_TYPE_SEQUENCER	SNDRV_MINOR_SEQUENCER
36 #define SNDRV_DEVICE_TYPE_TIMER		SNDRV_MINOR_TIMER
37 #define SNDRV_DEVICE_TYPE_COMPRESS	SNDRV_MINOR_COMPRESS
38 
39 #else /* CONFIG_SND_DYNAMIC_MINORS */
40 
41 enum {
42 	SNDRV_DEVICE_TYPE_CONTROL,
43 	SNDRV_DEVICE_TYPE_SEQUENCER,
44 	SNDRV_DEVICE_TYPE_TIMER,
45 	SNDRV_DEVICE_TYPE_HWDEP,
46 	SNDRV_DEVICE_TYPE_RAWMIDI,
47 	SNDRV_DEVICE_TYPE_PCM_PLAYBACK,
48 	SNDRV_DEVICE_TYPE_PCM_CAPTURE,
49 	SNDRV_DEVICE_TYPE_COMPRESS,
50 };
51 
52 #endif /* CONFIG_SND_DYNAMIC_MINORS */
53 
54 #define SNDRV_MINOR_HWDEPS		4
55 #define SNDRV_MINOR_RAWMIDIS		8
56 #define SNDRV_MINOR_PCMS		8
57 
58 
59 #ifdef CONFIG_SND_OSSEMUL
60 
61 #define SNDRV_MINOR_OSS_DEVICES		16
62 #define SNDRV_MINOR_OSS_CARD(minor)	((minor) >> 4)
63 #define SNDRV_MINOR_OSS_DEVICE(minor)	((minor) & 0x000f)
64 #define SNDRV_MINOR_OSS(card, dev)	(((card) << 4) | (dev))
65 
66 #define SNDRV_MINOR_OSS_MIXER		0	/* /dev/mixer - OSS 3.XX compatible */
67 #define SNDRV_MINOR_OSS_SEQUENCER	1	/* /dev/sequencer - OSS 3.XX compatible */
68 #define	SNDRV_MINOR_OSS_MIDI		2	/* /dev/midi - native midi interface - OSS 3.XX compatible - UART */
69 #define SNDRV_MINOR_OSS_PCM		3	/* alias */
70 #define SNDRV_MINOR_OSS_PCM_8		3	/* /dev/dsp - 8bit PCM - OSS 3.XX compatible */
71 #define SNDRV_MINOR_OSS_AUDIO		4	/* /dev/audio - SunSparc compatible */
72 #define SNDRV_MINOR_OSS_PCM_16		5	/* /dev/dsp16 - 16bit PCM - OSS 3.XX compatible */
73 #define SNDRV_MINOR_OSS_SNDSTAT		6	/* /dev/sndstat - for compatibility with OSS */
74 #define SNDRV_MINOR_OSS_RESERVED7	7	/* reserved for future use */
75 #define SNDRV_MINOR_OSS_MUSIC		8	/* /dev/music - OSS 3.XX compatible */
76 #define SNDRV_MINOR_OSS_DMMIDI		9	/* /dev/dmmidi0 - this device can have another minor # with OSS */
77 #define SNDRV_MINOR_OSS_DMFM		10	/* /dev/dmfm0 - this device can have another minor # with OSS */
78 #define SNDRV_MINOR_OSS_MIXER1		11	/* alternate mixer */
79 #define SNDRV_MINOR_OSS_PCM1		12	/* alternate PCM (GF-A-1) */
80 #define SNDRV_MINOR_OSS_MIDI1		13	/* alternate midi - SYNTH */
81 #define SNDRV_MINOR_OSS_DMMIDI1		14	/* alternate dmmidi - SYNTH */
82 #define SNDRV_MINOR_OSS_RESERVED15	15	/* reserved for future use */
83 
84 #define SNDRV_OSS_DEVICE_TYPE_MIXER	0
85 #define SNDRV_OSS_DEVICE_TYPE_SEQUENCER	1
86 #define SNDRV_OSS_DEVICE_TYPE_PCM	2
87 #define SNDRV_OSS_DEVICE_TYPE_MIDI	3
88 #define SNDRV_OSS_DEVICE_TYPE_DMFM	4
89 #define SNDRV_OSS_DEVICE_TYPE_SNDSTAT	5
90 #define SNDRV_OSS_DEVICE_TYPE_MUSIC	6
91 
92 #define MODULE_ALIAS_SNDRV_MINOR(type) \
93 	MODULE_ALIAS("sound-service-?-" __stringify(type))
94 
95 #endif
96 
97 #endif /* __SOUND_MINORS_H */
98