diff options
Diffstat (limited to 'include/arch/x86_64/linux/patchkey.h')
| -rw-r--r-- | include/arch/x86_64/linux/patchkey.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/include/arch/x86_64/linux/patchkey.h b/include/arch/x86_64/linux/patchkey.h new file mode 100644 index 00000000..b54be36f --- /dev/null +++ b/include/arch/x86_64/linux/patchkey.h @@ -0,0 +1,34 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* + * <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. */ +#include <endian.h> + +#if 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 */ |