Linux kernel mirror (for testing)
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1/*
2 * <linux/patchkey.h> -- definition of _PATCHKEY macro
3 *
4 * Copyright (C) 2005 Stuart Brady
5 *
6 * This exists because awe_voice.h defined its own _PATCHKEY and it wasn't
7 * clear whether removing this would break anything in userspace.
8 *
9 * Do not include this file directly. Please use <sys/soundcard.h> instead.
10 * For kernel code, use <linux/soundcard.h>
11 */
12
13#ifndef _LINUX_PATCHKEY_H_INDIRECT
14#error "patchkey.h included directly"
15#endif
16
17#ifndef _LINUX_PATCHKEY_H
18#define _LINUX_PATCHKEY_H
19
20/* Endian macros. */
21#ifdef __KERNEL__
22# include <asm/byteorder.h>
23#else
24# include <endian.h>
25#endif
26
27#if defined(__KERNEL__)
28# if defined(__BIG_ENDIAN)
29# define _PATCHKEY(id) (0xfd00|id)
30# elif defined(__LITTLE_ENDIAN)
31# define _PATCHKEY(id) ((id<<8)|0x00fd)
32# else
33# error "could not determine byte order"
34# endif
35#elif defined(__BYTE_ORDER)
36# if __BYTE_ORDER == __BIG_ENDIAN
37# define _PATCHKEY(id) (0xfd00|id)
38# elif __BYTE_ORDER == __LITTLE_ENDIAN
39# define _PATCHKEY(id) ((id<<8)|0x00fd)
40# else
41# error "could not determine byte order"
42# endif
43#endif
44
45#endif /* _LINUX_PATCHKEY_H */