LXR linux/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
  28static inline u8 getBit(u32 sample, u8 index)
  29{
  30        return (u8) ((sample >> index) & 1);
  31}
  32
  33static inline u32 clearBitAtPos(u32 value, u8 bit)
  34{
  35        return value & ~(1 << bit);
  36}
  37
  38static inline u32 setBitAtPos(u32 sample, u8 bit)
  39{
  40        sample |= (1 << bit);
  41        return sample;
  42
  43}
  44
  45#endif
  46