ISDN: Make isdnhdlc usable for other ISDN drivers

isdnhdlc is useful for other ISDN drivers as well.
Move the include file to a central location and the source
to the central isdn location.

Signed-off-by: Karsten Keil <keil@b1-systems.de>

8 files changed, 17 insertions, 85 deletions

diff --git a/drivers/isdn/Kconfig b/drivers/isdn/Kconfig
index 02bdca6f95c3..022a19452953 100644
--- a/drivers/isdn/Kconfig
+++ b/drivers/isdn/Kconfig
@@ -21,8 +21,6 @@ menuconfig ISDN
 
 if ISDN
 
-source "drivers/isdn/mISDN/Kconfig"
-
 menuconfig ISDN_I4L
         tristate "Old ISDN4Linux (deprecated)"
         ---help---
@@ -41,9 +39,9 @@ menuconfig ISDN_I4L
           It is still available, though, for use with adapters that are not
           supported by the new CAPI subsystem yet.
 
-if ISDN_I4L
+source "drivers/isdn/mISDN/Kconfig"
+
 source "drivers/isdn/i4l/Kconfig"
-endif
 
 menuconfig ISDN_CAPI
         tristate "CAPI 2.0 subsystem"
diff --git a/drivers/isdn/hisax/Kconfig b/drivers/isdn/hisax/Kconfig
index 7832d8ba8e44..3464ebc4cdbc 100644
--- a/drivers/isdn/hisax/Kconfig
+++ b/drivers/isdn/hisax/Kconfig
@@ -391,6 +391,7 @@ comment "HiSax sub driver modules"
 config HISAX_ST5481
         tristate "ST5481 USB ISDN modem (EXPERIMENTAL)"
         depends on USB && EXPERIMENTAL
+        select ISDN_HDLC
         select CRC_CCITT
         select BITREVERSE
         help
@@ -418,11 +419,6 @@ config HISAX_FRITZ_PCIPNP
           (the latter also needs you to select "ISA Plug and Play support"
           from the menu "Plug and Play configuration")
 
-config HISAX_HDLC
-        bool
-        depends on HISAX_ST5481
-        default y
-
 config HISAX_AVM_A1_PCMCIA
         bool
         depends on HISAX_AVM_A1_CS
diff --git a/drivers/isdn/hisax/Makefile b/drivers/isdn/hisax/Makefile
index c7a3794bdae4..ab638b083df9 100644
--- a/drivers/isdn/hisax/Makefile
+++ b/drivers/isdn/hisax/Makefile
@@ -16,10 +16,6 @@ obj-$(CONFIG_HISAX_HFCUSB)		+= hfc_usb.o
 obj-$(CONFIG_HISAX_HFC4S8S)             += hfc4s8s_l1.o
 obj-$(CONFIG_HISAX_FRITZ_PCIPNP)        += hisax_isac.o hisax_fcpcipnp.o
 
-ifdef CONFIG_HISAX_HDLC
-obj-$(CONFIG_ISDN_DRV_HISAX)            += isdnhdlc.o
-endif
-
 # Multipart objects.
 
 hisax_st5481-y                          := st5481_init.o st5481_usb.o st5481_d.o \
diff --git a/drivers/isdn/hisax/isdnhdlc.h b/drivers/isdn/hisax/isdnhdlc.h
deleted file mode 100644
index cf0a95a24015..000000000000
--- a/drivers/isdn/hisax/isdnhdlc.h
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * isdnhdlc.h  --  General purpose ISDN HDLC decoder.
- *
- * Implementation of a HDLC decoder/encoder in software.
- * Neccessary because some ISDN devices don't have HDLC
- * controllers. Also included: a bit reversal table.
- *
- *Copyright (C) 2002    Wolfgang Mües      <wolfgang@iksw-muees.de>
- *              2001    Frode Isaksen      <fisaksen@bewan.com>
- *              2001    Kai Germaschewski  <kai.germaschewski@gmx.de>
- *
- *      This program is free software; you can redistribute it and/or modify
- *      it under the terms of the GNU General Public License as published by
- *      the Free Software Foundation; either version 2 of the License, or
- *      (at your option) any later version.
- *
- *      This program is distributed in the hope that it will be useful,
- *      but WITHOUT ANY WARRANTY; without even the implied warranty of
- *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *      GNU General Public License for more details.
- *
- *      You should have received a copy of the GNU General Public License
- *      along with this program; if not, write to the Free Software
- *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef __ISDNHDLC_H__
-#define __ISDNHDLC_H__
-
-struct isdnhdlc_vars {
-        int bit_shift;
-        int hdlc_bits1;
-        int data_bits;
-        int ffbit_shift;        // encoding only
-        int state;
-        int dstpos;
-
-        unsigned short crc;
-
-        unsigned char cbin;
-        unsigned char shift_reg;
-        unsigned char ffvalue;
-
-        unsigned int data_received:1;   // set if transferring data
-        unsigned int dchannel:1;        // set if D channel (send idle instead of flags)
-        unsigned int do_adapt56:1;      // set if 56K adaptation
-        unsigned int do_closing:1;      // set if in closing phase (need to send CRC + flag
-};
-
-
-/*
-  The return value from isdnhdlc_decode is
-  the frame length, 0 if no complete frame was decoded,
-  or a negative error number
-*/
-#define HDLC_FRAMING_ERROR     1
-#define HDLC_CRC_ERROR         2
-#define HDLC_LENGTH_ERROR      3
-
-extern void isdnhdlc_rcv_init (struct isdnhdlc_vars *hdlc, int do_adapt56);
-
-extern int isdnhdlc_decode (struct isdnhdlc_vars *hdlc, const unsigned char *src, int slen,int *count,
-                            unsigned char *dst, int dsize);
-
-extern void isdnhdlc_out_init (struct isdnhdlc_vars *hdlc,int is_d_channel,int do_adapt56);
-
-extern int isdnhdlc_encode (struct isdnhdlc_vars *hdlc,const unsigned char *src,unsigned short slen,int *count,
-                            unsigned char *dst,int dsize);
-
-#endif /* __ISDNHDLC_H__ */
diff --git a/drivers/isdn/hisax/st5481.h b/drivers/isdn/hisax/st5481.h
index cff7a6354334..64f78a8c28c5 100644
--- a/drivers/isdn/hisax/st5481.h
+++ b/drivers/isdn/hisax/st5481.h
@@ -226,7 +226,7 @@ printk(KERN_WARNING "%s:%s: " format "\n" , __FILE__,  __func__ , ## arg)
 #define INFO(format, arg...) \
 printk(KERN_INFO "%s:%s: " format "\n" , __FILE__,  __func__ , ## arg)
 
-#include "isdnhdlc.h"
+#include <linux/isdn/hdlc.h>
 #include "fsm.h"
 #include "hisax_if.h"
 #include <linux/skbuff.h>
diff --git a/drivers/isdn/i4l/Kconfig b/drivers/isdn/i4l/Kconfig
index ed3510f273d8..dd744ffd240b 100644
--- a/drivers/isdn/i4l/Kconfig
+++ b/drivers/isdn/i4l/Kconfig
@@ -2,6 +2,8 @@
 # Old ISDN4Linux config
 #
 
+if ISDN_I4L
+
 config ISDN_PPP
         bool "Support synchronous PPP"
         depends on INET
@@ -135,3 +137,12 @@ source "drivers/isdn/act2000/Kconfig"
 source "drivers/isdn/hysdn/Kconfig"
 
 endmenu
+# end ISDN_I4L
+endif
+
+config ISDN_HDLC
+        tristate 
+        depends on HISAX_ST5481
+        select CRC_CCITT
+        select BITREVERSE
+
diff --git a/drivers/isdn/i4l/Makefile b/drivers/isdn/i4l/Makefile
index 49a06c0005dd..cb9d3bb9fae0 100644
--- a/drivers/isdn/i4l/Makefile
+++ b/drivers/isdn/i4l/Makefile
@@ -4,6 +4,7 @@
 
 obj-$(CONFIG_ISDN_I4L)          += isdn.o
 obj-$(CONFIG_ISDN_PPP_BSDCOMP)  += isdn_bsdcomp.o
+obj-$(CONFIG_ISDN_HDLC)         += isdnhdlc.o
 
 # Multipart objects.
 
diff --git a/drivers/isdn/hisax/isdnhdlc.c b/drivers/isdn/i4l/isdnhdlc.c
index c69a77a80062..44ec7418496b 100644
--- a/drivers/isdn/hisax/isdnhdlc.c
+++ b/drivers/isdn/i4l/isdnhdlc.c
@@ -23,7 +23,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/crc-ccitt.h>
-#include "isdnhdlc.h"
+#include <linux/isdn/hdlc.h>
 
 /*-------------------------------------------------------------------*/