linux/include/linux/patchkey.h
Stuart Brady 60d300c02f [PATCH] include/linux/soundcard.h: endianness fix
Fixes for big-endian systems in soundcard.h and awe_voice.h

This patch fixes the AFMT_S16_NE (include/linux/soundcard.h) and AWE_PATCH
(awe_voice.h) macros on big-endian systems.

It also moves _PATCHKEY into a new file, patchkey.h, in order to remove a
duplicate definition of it from awe_voice.h.

Signed-off-by: Stuart Brady <sdbrady@ntlworld.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:31 -07:00

46 lines
1.1 KiB
C

/*
* <linux/patchkey.h> -- definition of _PATCHKEY macro
*
* Copyright (C) 2005 Stuart Brady
*
* This exists because awe_voice.h defined its own _PATCHKEY and it wasn't
* clear whether removing this would break anything in userspace.
*
* Do not include this file directly. Please use <sys/soundcard.h> instead.
* For kernel code, use <linux/soundcard.h>
*/
#ifndef _LINUX_PATCHKEY_H_INDIRECT
#error "patchkey.h included directly"
#endif
#ifndef _LINUX_PATCHKEY_H
#define _LINUX_PATCHKEY_H
/* Endian macros. */
#ifdef __KERNEL__
# include <asm/byteorder.h>
#else
# include <endian.h>
#endif
#if defined(__KERNEL__)
# if defined(__BIG_ENDIAN)
# define _PATCHKEY(id) (0xfd00|id)
# elif defined(__LITTLE_ENDIAN)
# define _PATCHKEY(id) ((id<<8)|0x00fd)
# else
# error "could not determine byte order"
# endif
#elif defined(__BYTE_ORDER)
# if __BYTE_ORDER == __BIG_ENDIAN
# define _PATCHKEY(id) (0xfd00|id)
# elif __BYTE_ORDER == __LITTLE_ENDIAN
# define _PATCHKEY(id) ((id<<8)|0x00fd)
# else
# error "could not determine byte order"
# endif
#endif
#endif /* _LINUX_PATCHKEY_H */