The patch titled
add synclink_gt custom hdlc idle
has been added to the -mm tree. Its filename is
add-synclink_gt-custom-hdlc-idle.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: add synclink_gt custom hdlc idle
From: Paul Fulghum <paulkf@xxxxxxxxxxxxx>
Add custom HDLC idle pattern feature.
Signed-off-by: Paul Fulghum <paulkf@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/char/synclink_gt.c | 46 +++++++++++++++++++++++++----------
include/linux/synclink.h | 4 ++-
2 files changed, 36 insertions(+), 14 deletions(-)
diff -puN drivers/char/synclink_gt.c~add-synclink_gt-custom-hdlc-idle drivers/char/synclink_gt.c
--- a/drivers/char/synclink_gt.c~add-synclink_gt-custom-hdlc-idle
+++ a/drivers/char/synclink_gt.c
@@ -2515,7 +2515,8 @@ static int set_txidle(struct slgt_info *
DBGINFO(("%s set_txidle(%d)\n", info->device_name, idle_mode));
spin_lock_irqsave(&info->lock,flags);
info->idle_mode = idle_mode;
- tx_set_idle(info);
+ if (info->params.mode != MGSL_MODE_ASYNC)
+ tx_set_idle(info);
spin_unlock_irqrestore(&info->lock,flags);
return 0;
}
@@ -3940,8 +3941,6 @@ static void async_mode(struct slgt_info
msc_set_vcr(info);
- tx_set_idle(info);
-
/* SCR (serial control)
*
* 15 1=tx req on FIFO half empty
@@ -4175,17 +4174,38 @@ static void hdlc_mode(struct slgt_info *
*/
static void tx_set_idle(struct slgt_info *info)
{
- unsigned char val = 0xff;
+ unsigned char val;
+ unsigned short tcr;
- switch(info->idle_mode)
- {
- case HDLC_TXIDLE_FLAGS: val = 0x7e; break;
- case HDLC_TXIDLE_ALT_ZEROS_ONES: val = 0xaa; break;
- case HDLC_TXIDLE_ZEROS: val = 0x00; break;
- case HDLC_TXIDLE_ONES: val = 0xff; break;
- case HDLC_TXIDLE_ALT_MARK_SPACE: val = 0xaa; break;
- case HDLC_TXIDLE_SPACE: val = 0x00; break;
- case HDLC_TXIDLE_MARK: val = 0xff; break;
+ /* if preamble enabled (tcr[6] == 1) then tx idle size = 8 bits
+ * else tcr[5:4] = tx idle size: 00 = 8 bits, 01 = 16 bits
+ */
+ tcr = rd_reg16(info, TCR);
+ if (info->idle_mode & HDLC_TXIDLE_CUSTOM_16) {
+ /* disable preamble, set idle size to 16 bits */
+ tcr = (tcr & ~(BIT6 + BIT5)) | BIT4;
+ /* MSB of 16 bit idle specified in tx preamble register (TPR) */
+ wr_reg8(info, TPR, (unsigned char)((info->idle_mode >> 8) & 0xff));
+ } else if (!(tcr & BIT6)) {
+ /* preamble is disabled, set idle size to 8 bits */
+ tcr &= ~(BIT5 + BIT4);
+ }
+ wr_reg16(info, TCR, tcr);
+
+ if (info->idle_mode & (HDLC_TXIDLE_CUSTOM_8 | HDLC_TXIDLE_CUSTOM_16)) {
+ /* LSB of custom tx idle specified in tx idle register */
+ val = (unsigned char)(info->idle_mode & 0xff);
+ } else {
+ /* standard 8 bit idle patterns */
+ switch(info->idle_mode)
+ {
+ case HDLC_TXIDLE_FLAGS: val = 0x7e; break;
+ case HDLC_TXIDLE_ALT_ZEROS_ONES:
+ case HDLC_TXIDLE_ALT_MARK_SPACE: val = 0xaa; break;
+ case HDLC_TXIDLE_ZEROS:
+ case HDLC_TXIDLE_SPACE: val = 0x00; break;
+ default: val = 0xff;
+ }
}
wr_reg8(info, TIR, val);
diff -puN include/linux/synclink.h~add-synclink_gt-custom-hdlc-idle include/linux/synclink.h
--- a/include/linux/synclink.h~add-synclink_gt-custom-hdlc-idle
+++ a/include/linux/synclink.h
@@ -1,7 +1,7 @@
/*
* SyncLink Multiprotocol Serial Adapter Driver
*
- * $Id: synclink.h,v 3.11 2006/02/06 21:20:29 paulkf Exp $
+ * $Id: synclink.h,v 3.13 2006/05/23 18:25:06 paulkf Exp $
*
* Copyright (C) 1998-2000 by Microgate Corporation
*
@@ -97,6 +97,8 @@
#define HDLC_TXIDLE_ALT_MARK_SPACE 4
#define HDLC_TXIDLE_SPACE 5
#define HDLC_TXIDLE_MARK 6
+#define HDLC_TXIDLE_CUSTOM_8 0x10000000
+#define HDLC_TXIDLE_CUSTOM_16 0x20000000
#define HDLC_ENCODING_NRZ 0
#define HDLC_ENCODING_NRZB 1
_
Patches currently in -mm which might be from paulkf@xxxxxxxxxxxxx are
sparse-fixes-for-synclink_cs.patch
remove-dead-entry-in-net-wan-kconfig.patch
more-tty-cleanups-in-drivers-char.patch
fix-memory-leak-in-rocketport-rp_do_receive.patch
add-synclink_gt-custom-hdlc-idle.patch
revert-tty-buffering-comment-out-debug-code.patch
-
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