cregit-Linux how code gets into the kernel

Release 4.12 include/uapi/linux/sound.h

#ifndef _UAPI_LINUX_SOUND_H

#define _UAPI_LINUX_SOUND_H

/*
 * Minor numbers for the sound driver.
 */

#include <linux/fs.h>


#define SND_DEV_CTL		0	
/* Control port /dev/mixer */

#define SND_DEV_SEQ		1	
/* Sequencer output /dev/sequencer (FM
                                                synthesizer and MIDI output) */

#define SND_DEV_MIDIN		2	
/* Raw midi access */

#define SND_DEV_DSP		3	
/* Digitized voice /dev/dsp */

#define SND_DEV_AUDIO		4	
/* Sparc compatible /dev/audio */

#define SND_DEV_DSP16		5	
/* Like /dev/dsp but 16 bits/sample */
/* #define SND_DEV_STATUS       6 */	/* /dev/sndstat (obsolete) */

#define SND_DEV_UNUSED		6

#define SND_DEV_AWFM		7	
/* Reserved */

#define SND_DEV_SEQ2		8	
/* /dev/sequencer, level 2 interface */
/* #define SND_DEV_SNDPROC      9 */	/* /dev/sndproc for programmable devices (not used) */
/* #define SND_DEV_DMMIDI       9 */

#define SND_DEV_SYNTH		9	
/* Raw synth access /dev/synth (same as /dev/dmfm) */

#define SND_DEV_DMFM		10	
/* Raw synth access /dev/dmfm */

#define SND_DEV_UNKNOWN11	11

#define SND_DEV_ADSP		12	
/* Like /dev/dsp (obsolete) */

#define SND_DEV_AMIDI		13	
/* Like /dev/midi (obsolete) */

#define SND_DEV_ADMMIDI		14	
/* Like /dev/dmmidi (onsolete) */


#endif /* _UAPI_LINUX_SOUND_H */

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