drivers/staging/vt6656/tmacro.h

   1 /*
   2  * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * File: tmacro.h
  20  *
  21  * Purpose: define basic common types and macros
  22  *
  23  * Author: Tevin Chen
  24  *
  25  * Date: May 21, 1996
  26  *
  27  */
  28
  29 #ifndef __TMACRO_H__
  30 #define __TMACRO_H__
  31
  32 /****** Common helper macros ***********************************************/
  33
  34 #if !defined(LOBYTE)
  35 #define LOBYTE(w)           ((u8)(w))
  36 #endif
  37 #if !defined(HIBYTE)
  38 #define HIBYTE(w)           ((u8)(((u16)(w) >> 8) & 0xFF))
  39 #endif
  40
  41 #if !defined(LOWORD)
  42 #define LOWORD(d)           ((u16)(d))
  43 #endif
  44 #if !defined(HIWORD)
  45 #define HIWORD(d)           ((u16)((((u32)(d)) >> 16) & 0xFFFF))
  46 #endif
  47
  48 #define LODWORD(q)          ((q).u.dwLowDword)
  49 #define HIDWORD(q)          ((q).u.dwHighDword)
  50
  51 #if !defined(MAKEWORD)
  52 #define MAKEWORD(lb, hb)    ((u16)(((u8)(lb)) | (((u16)((u8)(hb))) << 8)))
  53 #endif
  54 #if !defined(MAKEDWORD)
  55 #define MAKEDWORD(lw, hw)   ((u32)(((u16)(lw)) | (((u32)((u16)(hw))) << 16)))
  56 #endif
  57
  58 #endif /* __TMACRO_H__ */