tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Minor numbers for the sound driver.
3 *
4 * Unfortunately Creative called the codec chip of SB as a DSP. For this
5 * reason the /dev/dsp is reserved for digitized audio use. There is a
6 * device for true DSP processors but it will be called something else.
7 * In v3.0 it's /dev/sndproc but this could be a temporary solution.
8 */
9
10#define SND_NDEVS 256 /* Number of supported devices */
11#define SND_DEV_CTL 0 /* Control port /dev/mixer */
12#define SND_DEV_SEQ 1 /* Sequencer output /dev/sequencer (FM
13 synthesizer and MIDI output) */
14#define SND_DEV_MIDIN 2 /* Raw midi access */
15#define SND_DEV_DSP 3 /* Digitized voice /dev/dsp */
16#define SND_DEV_AUDIO 4 /* Sparc compatible /dev/audio */
17#define SND_DEV_DSP16 5 /* Like /dev/dsp but 16 bits/sample */
18#define SND_DEV_STATUS 6 /* /dev/sndstat */
19/* #7 not in use now. Was in 2.4. Free for use after v3.0. */
20#define SND_DEV_SEQ2 8 /* /dev/sequencer, level 2 interface */
21#define SND_DEV_SNDPROC 9 /* /dev/sndproc for programmable devices */
22#define SND_DEV_PSS SND_DEV_SNDPROC
23
24#define DSP_DEFAULT_SPEED 8000
25
26#define ON 1
27#define OFF 0
28
29#define MAX_AUDIO_DEV 5
30#define MAX_MIXER_DEV 2
31#define MAX_SYNTH_DEV 3
32#define MAX_MIDI_DEV 6
33#define MAX_TIMER_DEV 3