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authorKarsten Keil <keil@b1-systems.de>2009-07-08 20:31:42 +0200
committerKarsten Keil <keil@b1-systems.de>2009-07-25 20:16:01 +0200
commitc38fc3bc2ecddd4f5278131603e6964cbed071b2 (patch)
tree3821cf2fc6226375bbbf8c338316eef33f5b899d /include/linux/isdn/hdlc.h
parent6bd4bcd3cd8affc09eaee7efbc037f65f4a71501 (diff)
ISDN: Add support for none reverse bitstreams to isdnhdc
The original isdnhdlc code was developed for devices which had reversed bitorder in the byte stream. Adding code to handle normal bitstreams as well. Signed-off-by: Karsten Keil <keil@b1-systems.de>
Diffstat (limited to 'include/linux/isdn/hdlc.h')
-rw-r--r--include/linux/isdn/hdlc.h12
1 files changed, 9 insertions, 3 deletions
diff --git a/include/linux/isdn/hdlc.h b/include/linux/isdn/hdlc.h
index 8f3540c7f69..4b3ecc40889 100644
--- a/include/linux/isdn/hdlc.h
+++ b/include/linux/isdn/hdlc.h
@@ -6,6 +6,7 @@
* controllers.
*
* Copyright (C)
+ * 2009 Karsten Keil <keil@b1-systems.de>
* 2002 Wolfgang Mües <wolfgang@iksw-muees.de>
* 2001 Frode Isaksen <fisaksen@bewan.com>
* 2001 Kai Germaschewski <kai.germaschewski@gmx.de>
@@ -50,8 +51,14 @@ struct isdnhdlc_vars {
u32 do_adapt56:1;
/* set if in closing phase (need to send CRC + flag) */
u32 do_closing:1;
+ /* set if data is bitreverse */
+ u32 do_bitreverse:1;
};
+/* Feature Flags */
+#define HDLC_56KBIT 0x01
+#define HDLC_DCHANNEL 0x02
+#define HDLC_BITREVERSE 0x04
/*
The return value from isdnhdlc_decode is
@@ -62,13 +69,12 @@ struct isdnhdlc_vars {
#define HDLC_CRC_ERROR 2
#define HDLC_LENGTH_ERROR 3
-extern void isdnhdlc_rcv_init(struct isdnhdlc_vars *hdlc, int do_adapt56);
+extern void isdnhdlc_rcv_init(struct isdnhdlc_vars *hdlc, u32 features);
extern int isdnhdlc_decode(struct isdnhdlc_vars *hdlc, const u8 *src,
int slen, int *count, u8 *dst, int dsize);
-extern void isdnhdlc_out_init(struct isdnhdlc_vars *hdlc, int is_d_channel,
- int do_adapt56);
+extern void isdnhdlc_out_init(struct isdnhdlc_vars *hdlc, u32 features);
extern int isdnhdlc_encode(struct isdnhdlc_vars *hdlc, const u8 *src,
u16 slen, int *count, u8 *dst, int dsize);