| David Howells | 607ca46 | 2012-10-13 10:46:48 +0100 | [diff] [blame] | 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 _UAPI_LINUX_PATCHKEY_H |
| 18 | #define _UAPI_LINUX_PATCHKEY_H |
| 19 | |
| 20 | /* Endian macros. */ |
| 21 | #ifndef __KERNEL__ |
| 22 | # include <endian.h> |
| 23 | #endif |
| 24 | |
| 25 | #if !defined(__KERNEL__) |
| 26 | #if defined(__BYTE_ORDER) |
| 27 | # if __BYTE_ORDER == __BIG_ENDIAN |
| 28 | # define _PATCHKEY(id) (0xfd00|id) |
| 29 | # elif __BYTE_ORDER == __LITTLE_ENDIAN |
| 30 | # define _PATCHKEY(id) ((id<<8)|0x00fd) |
| 31 | # else |
| 32 | # error "could not determine byte order" |
| 33 | # endif |
| 34 | #endif |
| 35 | #endif |
| 36 | |
| 37 | #endif /* _UAPI_LINUX_PATCHKEY_H */ |