mirror of https://gitee.com/openkylin/linux.git
30 lines
880 B
C
30 lines
880 B
C
|
/*********************************************************************
|
||
|
|
*
|
||
|
|
* 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
|