| 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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| 2 | /* |
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| 3 | * <linux/patchkey.h> -- definition of _PATCHKEY macro |
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| 4 | * |
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| 5 | * Copyright (C) 2005 Stuart Brady |
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| 6 | * |
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| 7 | * This exists because awe_voice.h defined its own _PATCHKEY and it wasn't |
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| 8 | * clear whether removing this would break anything in userspace. |
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| 9 | * |
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| 10 | * Do not include this file directly. Please use <sys/soundcard.h> instead. |
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| 11 | * For kernel code, use <linux/soundcard.h> |
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| 12 | */ |
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| 13 | |
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| 14 | #ifndef _LINUX_PATCHKEY_H_INDIRECT |
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| 15 | #error "patchkey.h included directly" |
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| 16 | #endif |
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| 17 | |
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| 18 | #ifndef _LINUX_PATCHKEY_H |
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| 19 | #define _LINUX_PATCHKEY_H |
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| 20 | |
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| 21 | /* Endian macros. */ |
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| 22 | # include <endian.h> |
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| 23 | |
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| 24 | #if defined(__BYTE_ORDER) |
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| 25 | # if __BYTE_ORDER == __BIG_ENDIAN |
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| 26 | # define _PATCHKEY(id) (0xfd00|id) |
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| 27 | # elif __BYTE_ORDER == __LITTLE_ENDIAN |
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| 28 | # define _PATCHKEY(id) ((id<<8)|0x00fd) |
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| 29 | # else |
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| 30 | # error "could not determine byte order" |
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| 31 | # endif |
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| 32 | #endif |
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| 33 | |
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| 34 | #endif /* _LINUX_PATCHKEY_H */ |
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| 35 | |
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