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kernel/linux-imx6_3.14.28/include/net/irda/crc.h 880 Bytes
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  /*********************************************************************
   *                
   * Filename:      crc.h
   * Version:       
   * Description:   CRC routines
   * Status:        Experimental.
   * Author:        Dag Brattli <dagb@cs.uit.no>
   * Created at:    Mon Aug  4 20:40:53 1997
   * Modified at:   Sun May  2 20:25:23 1999
   * Modified by:   Dag Brattli <dagb@cs.uit.no>
   * 
   ********************************************************************/
  
  #ifndef IRDA_CRC_H
  #define IRDA_CRC_H
  
  #include <linux/types.h>
  #include <linux/crc-ccitt.h>
  
  #define INIT_FCS  0xffff   /* Initial FCS value */
  #define GOOD_FCS  0xf0b8   /* Good final FCS value */
  
  /* Recompute the FCS with one more character appended. */
  #define irda_fcs(fcs, c) crc_ccitt_byte(fcs, c)
  
  /* Recompute the FCS with len bytes appended. */
  #define irda_calc_crc16(fcs, buf, len) crc_ccitt(fcs, buf, len)
  
  #endif