forked from mirrors/linux
a648bd0c9f
Make linux/patchkey.h easier to parse by making the #elif case associated with the __KERNEL__ guard a nested #if in a #else of the __KERNEL__ guard. Signed-off-by: David Howells <dhowells@redhat.com>
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
/*
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* <linux/patchkey.h> -- definition of _PATCHKEY macro
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*
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* Copyright (C) 2005 Stuart Brady
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*
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* This exists because awe_voice.h defined its own _PATCHKEY and it wasn't
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* clear whether removing this would break anything in userspace.
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*
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* Do not include this file directly. Please use <sys/soundcard.h> instead.
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* For kernel code, use <linux/soundcard.h>
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*/
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#ifndef _LINUX_PATCHKEY_H_INDIRECT
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#error "patchkey.h included directly"
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#endif
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#ifndef _LINUX_PATCHKEY_H
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#define _LINUX_PATCHKEY_H
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/* Endian macros. */
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#ifdef __KERNEL__
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# include <asm/byteorder.h>
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#else
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# include <endian.h>
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#endif
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#if defined(__KERNEL__)
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# if defined(__BIG_ENDIAN)
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# define _PATCHKEY(id) (0xfd00|id)
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# elif defined(__LITTLE_ENDIAN)
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# define _PATCHKEY(id) ((id<<8)|0x00fd)
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# else
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# error "could not determine byte order"
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# endif
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#else
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#if defined(__BYTE_ORDER)
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# if __BYTE_ORDER == __BIG_ENDIAN
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# define _PATCHKEY(id) (0xfd00|id)
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# elif __BYTE_ORDER == __LITTLE_ENDIAN
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# define _PATCHKEY(id) ((id<<8)|0x00fd)
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# else
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# error "could not determine byte order"
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# endif
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#endif
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#endif
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#endif /* _LINUX_PATCHKEY_H */
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