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  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23 #ifndef _BITFUNCS_H
  24 #define _BITFUNCS_H
  25
  26 #define SetBit(Bit)  (1 << Bit)
  27
  28 static inline u8 getBit(u32 sample, u8 index)
  29 {
  30         return (u8) ((sample >> index) & 1);
  31 }
  32
  33 static inline u32 clearBitAtPos(u32 value, u8 bit)
  34 {
  35         return value & ~(1 << bit);
  36 }
  37
  38 static inline u32 setBitAtPos(u32 sample, u8 bit)
  39 {
  40         sample |= (1 << bit);
  41         return sample;
  42
  43 }
  44
  45 #endif