drivers/media/pci/cx25821/cx25821-biffuncs.h

   1 /*
   2  *  Driver for the Conexant CX25821 PCIe bridge
   3  *
   4  *  Copyright (C) 2009 Conexant Systems Inc.
   5  *  Authors  <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *
  16  *  GNU General Public License for more details.
  17  */
  18
  19 #ifndef _BITFUNCS_H
  20 #define _BITFUNCS_H
  21
  22 #define SetBit(Bit)  (1 << Bit)
  23
  24 static inline u8 getBit(u32 sample, u8 index)
  25 {
  26         return (u8) ((sample >> index) & 1);
  27 }
  28
  29 static inline u32 clearBitAtPos(u32 value, u8 bit)
  30 {
  31         return value & ~(1 << bit);
  32 }
  33
  34 static inline u32 setBitAtPos(u32 sample, u8 bit)
  35 {
  36         sample |= (1 << bit);
  37         return sample;
  38
  39 }
  40
  41 #endif