LXR linux/include/uapi/linux/patchkey.h

   1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2/*
   3 * <linux/patchkey.h> -- definition of _PATCHKEY macro
   4 *
   5 * Copyright (C) 2005 Stuart Brady
   6 *
   7 * This exists because awe_voice.h defined its own _PATCHKEY and it wasn't
   8 * clear whether removing this would break anything in userspace.
   9 *
  10 * Do not include this file directly.  Please use <sys/soundcard.h> instead.
  11 * For kernel code, use <linux/soundcard.h>
  12 */
  13
  14#ifndef _LINUX_PATCHKEY_H_INDIRECT
  15#error "patchkey.h included directly"
  16#endif
  17
  18#ifndef _UAPI_LINUX_PATCHKEY_H
  19#define _UAPI_LINUX_PATCHKEY_H
  20
  21/* Endian macros. */
  22#ifndef __KERNEL__
  23#  include <endian.h>
  24#endif
  25
  26#if !defined(__KERNEL__)
  27#if defined(__BYTE_ORDER)
  28#  if __BYTE_ORDER == __BIG_ENDIAN
  29#    define _PATCHKEY(id) (0xfd00|id)
  30#  elif __BYTE_ORDER == __LITTLE_ENDIAN
  31#    define _PATCHKEY(id) ((id<<8)|0x00fd)
  32#  else
  33#    error "could not determine byte order"
  34#  endif
  35#endif
  36#endif
  37
  38#endif /* _UAPI_LINUX_PATCHKEY_H */
  39