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authorStuart Brady <sdbrady@ntlworld.com>2005-05-05 19:15:07 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-05 19:36:31 -0400
commit60d300c02fe2e0be9bb02904361e41e0307264b2 (patch)
tree28734e32dd7b7deea4d9d1456b354f59de2f2187 /include/linux/patchkey.h
parent42d77c70177b2f7535766bce938d965fd863f0fd (diff)
[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>
Diffstat (limited to 'include/linux/patchkey.h')
-rw-r--r--include/linux/patchkey.h45
1 files changed, 45 insertions, 0 deletions
diff --git a/include/linux/patchkey.h b/include/linux/patchkey.h
new file mode 100644
index 000000000000..d974a6e92372
--- /dev/null
+++ b/include/linux/patchkey.h
@@ -0,0 +1,45 @@
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 */