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isdn: hdlc: move into mISDN
The last remnant of the isdn4linux interface is now the isdnhdlc support, used by the netjet driver. Move it next to that driver. Signed-off-by: Arnd Bergmann <[email protected]>
This commit is contained in:
Arnd Bergmann
parent
9c3c0c2048
commit
99c2aa151a
7 changed files with 9 additions and 11 deletions
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@ -3,7 +3,6 @@
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# Object files in subdirectories
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obj-$(CONFIG_ISDN_I4L) += i4l/
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obj-$(CONFIG_ISDN_CAPI) += capi/
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obj-$(CONFIG_MISDN) += mISDN/
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obj-$(CONFIG_ISDN) += hardware/
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@ -79,11 +79,14 @@ config MISDN_NETJET
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depends on PCI
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depends on TTY
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select MISDN_IPAC
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select ISDN_HDLC
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select ISDN_I4L
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select MISDN_HDLC
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help
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Enable support for Traverse Technologies NETJet PCI cards.
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config MISDN_HDLC
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tristate
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select CRC_CCITT
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select BITREVERSE
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config MISDN_IPAC
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tristate
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@ -15,3 +15,5 @@ obj-$(CONFIG_MISDN_NETJET) += netjet.o
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# chip modules
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obj-$(CONFIG_MISDN_IPAC) += mISDNipac.o
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obj-$(CONFIG_MISDN_ISAR) += mISDNisar.o
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obj-$(CONFIG_MISDN_HDLC) += isdnhdlc.o
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@ -25,8 +25,8 @@
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/crc-ccitt.h>
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#include <linux/isdn/hdlc.h>
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#include <linux/bitrev.h>
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#include "isdnhdlc.h"
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/*-------------------------------------------------------------------*/
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82
drivers/isdn/hardware/mISDN/isdnhdlc.h
Normal file
82
drivers/isdn/hardware/mISDN/isdnhdlc.h
Normal file
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@ -0,0 +1,82 @@
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/*
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* hdlc.h -- General purpose ISDN HDLC decoder.
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*
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* Implementation of a HDLC decoder/encoder in software.
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* Necessary because some ISDN devices don't have HDLC
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* controllers.
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*
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* Copyright (C)
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* 2009 Karsten Keil <keil@b1-systems.de>
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* 2002 Wolfgang Mües <wolfgang@iksw-muees.de>
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* 2001 Frode Isaksen <fisaksen@bewan.com>
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* 2001 Kai Germaschewski <kai.germaschewski@gmx.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __ISDNHDLC_H__
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#define __ISDNHDLC_H__
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struct isdnhdlc_vars {
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int bit_shift;
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int hdlc_bits1;
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int data_bits;
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int ffbit_shift; /* encoding only */
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int state;
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int dstpos;
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u16 crc;
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u8 cbin;
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u8 shift_reg;
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u8 ffvalue;
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/* set if transferring data */
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u32 data_received:1;
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/* set if D channel (send idle instead of flags) */
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u32 dchannel:1;
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/* set if 56K adaptation */
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u32 do_adapt56:1;
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/* set if in closing phase (need to send CRC + flag) */
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u32 do_closing:1;
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/* set if data is bitreverse */
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u32 do_bitreverse:1;
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};
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/* Feature Flags */
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#define HDLC_56KBIT 0x01
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#define HDLC_DCHANNEL 0x02
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#define HDLC_BITREVERSE 0x04
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/*
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The return value from isdnhdlc_decode is
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the frame length, 0 if no complete frame was decoded,
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or a negative error number
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*/
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#define HDLC_FRAMING_ERROR 1
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#define HDLC_CRC_ERROR 2
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#define HDLC_LENGTH_ERROR 3
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extern void isdnhdlc_rcv_init(struct isdnhdlc_vars *hdlc, u32 features);
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extern int isdnhdlc_decode(struct isdnhdlc_vars *hdlc, const u8 *src,
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int slen, int *count, u8 *dst, int dsize);
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extern void isdnhdlc_out_init(struct isdnhdlc_vars *hdlc, u32 features);
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extern int isdnhdlc_encode(struct isdnhdlc_vars *hdlc, const u8 *src,
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u16 slen, int *count, u8 *dst, int dsize);
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#endif /* __ISDNHDLC_H__ */
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@ -29,7 +29,7 @@
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#include "ipac.h"
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#include "iohelper.h"
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#include "netjet.h"
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#include <linux/isdn/hdlc.h>
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#include "isdnhdlc.h"
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#define NETJET_REV "2.0"
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@ -1,6 +0,0 @@
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# SPDX-License-Identifier: GPL-2.0
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# Makefile for the kernel ISDN subsystem and device drivers.
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# Each configuration option enables a list of files.
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obj-$(CONFIG_ISDN_HDLC) += isdnhdlc.o
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