File 0001-Revert-Remove-support-for-driver-wcte12xp.... of Package dahdi-linux

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File 0001-Revert-Remove-support-for-driver-wcte12xp.patch of Package dahdi-linux (Revision a2a5b44ba49c209fafda96d9e3ba2b71)

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From ea4a9e4f3017caa92c262519185159109a461e57 Mon Sep 17 00:00:00 2001
From: Harald Welte <laforge@osmocom.org>
Date: Fri, 6 Nov 2020 18:07:38 +0100
Subject: [PATCH 1/3] Revert "Remove support for driver wcte12xp."

This reverts commit 3697450317a7bd60bfa7031aad250085928d5c47.
---
 drivers/dahdi/Kbuild              |    1 +
 drivers/dahdi/Kconfig             |   17 +
 drivers/dahdi/wcte12xp/Kbuild     |    5 +
 drivers/dahdi/wcte12xp/base.c     | 3224 +++++++++++++++++++++++++++++
 drivers/dahdi/wcte12xp/wcte12xp.h |  167 ++
 5 files changed, 3414 insertions(+)
 create mode 100644 drivers/dahdi/wcte12xp/Kbuild
 create mode 100644 drivers/dahdi/wcte12xp/base.c
 create mode 100644 drivers/dahdi/wcte12xp/wcte12xp.h

diff --git a/drivers/dahdi/Kbuild b/drivers/dahdi/Kbuild
index 1a18c0e..ea936a8 100644
--- a/drivers/dahdi/Kbuild
+++ b/drivers/dahdi/Kbuild
@@ -11,6 +11,7 @@ obj-$(DAHDI_BUILD_ALL)$(CONFIG_DAHDI_OCT612X)		+= oct612x/
 obj-$(DAHDI_BUILD_ALL)$(CONFIG_DAHDI_WCT4XXP)		+= wct4xxp/
 obj-$(DAHDI_BUILD_ALL)$(CONFIG_DAHDI_WCTC4XXP)		+= wctc4xxp/
 obj-$(DAHDI_BUILD_ALL)$(CONFIG_DAHDI_WCTDM24XXP)	+= wctdm24xxp/
+obj-$(DAHDI_BUILD_ALL)$(CONFIG_DAHDI_WCTE12XP)		+= wcte12xp/
 obj-$(DAHDI_BUILD_ALL)$(CONFIG_DAHDI_WCTE13XP)		+= wcte13xp.o
 
 wcte13xp-objs := wcte13xp-base.o wcxb_spi.o wcxb.o wcxb_flash.o
diff --git a/drivers/dahdi/Kconfig b/drivers/dahdi/Kconfig
index faa6c8b..11d342c 100644
--- a/drivers/dahdi/Kconfig
+++ b/drivers/dahdi/Kconfig
@@ -146,6 +146,23 @@ config DAHDI_WCTDM24XXP
 
 	  If unsure, say Y.
 
+config DAHDI_WCTE12XP
+	tristate "Digium Wildcard VoiceBus digital card Support"
+	depends on DAHDI && DAHDI_VOICEBUS
+	default DAHDI
+	---help---
+	  This driver provides support for the following Digium
+	  Wildcard products:
+
+  	  * TE120P (PCI/PCI-X)
+	  * TE121 (PCI/PCI-X)
+  	  * TE122 (PCI-E)
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called wcte12xp.
+
+	  If unsure, say Y.
+
 config DAHDI_PCIRADIO
 	tristate "PCI Radio Support"
 	depends on DAHDI && PCI
diff --git a/drivers/dahdi/wcte12xp/Kbuild b/drivers/dahdi/wcte12xp/Kbuild
new file mode 100644
index 0000000..77efd7d
--- /dev/null
+++ b/drivers/dahdi/wcte12xp/Kbuild
@@ -0,0 +1,5 @@
+obj-$(DAHDI_BUILD_ALL)$(CONFIG_DAHDI_WCTE12XP) += wcte12xp.o
+
+EXTRA_CFLAGS += -I$(src)/.. -Wno-undef
+
+wcte12xp-objs := base.o
diff --git a/drivers/dahdi/wcte12xp/base.c b/drivers/dahdi/wcte12xp/base.c
new file mode 100644
index 0000000..9932656
--- /dev/null
+++ b/drivers/dahdi/wcte12xp/base.c
@@ -0,0 +1,3224 @@
+/*
+ * Digium, Inc.  Wildcard TE12xP T1/E1 card Driver
+ *
+ * Written by Michael Spiceland <mspiceland@digium.com>
+ *
+ * Adapted from the wctdm24xxp and wcte11xp drivers originally
+ * written by Mark Spencer <markster@digium.com>
+ *            Matthew Fredrickson <creslin@digium.com>
+ *            William Meadows <wmeadows@digium.com>
+ *
+ * Copyright (C) 2007-2012, Digium, Inc.
+ *
+ * All rights reserved.
+ *
+ */
+
+/*
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2 as published by the
+ * Free Software Foundation. See the LICENSE file included with
+ * this program for more details.
+ */
+
+#define pr_fmt(fmt)             KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/proc_fs.h>
+#include <linux/moduleparam.h>
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+
+#include <linux/slab.h>
+
+#include <stdbool.h>
+#include <dahdi/kernel.h>
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
+#include <linux/sched/signal.h>
+#endif /* 4.11.0 */
+
+#include "wct4xxp/wct4xxp.h"	/* For certain definitions */
+
+#include "voicebus/voicebus.h"
+#include "voicebus/vpmoct.h"
+#include "wcte12xp.h"
+
+#include "voicebus/GpakCust.h"
+#include "voicebus/GpakApi.h"
+
+#if VOICEBUS_SFRAME_SIZE != SFRAME_SIZE
+#error VOICEBUS_SFRAME_SIZE != SFRAME_SIZE
+#endif
+
+static int debug;
+static int j1mode = -1;
+static int alarmdebounce = 2500; /* LOF/LFA def to 2.5s AT&T TR54016*/
+static int losalarmdebounce = 2500; /* LOS def to 2.5s AT&T TR54016*/
+static int aisalarmdebounce = 2500; /* AIS(blue) def to 2.5s AT&T TR54016*/
+static int yelalarmdebounce = 500; /* RAI(yellow) def to 0.5s AT&T devguide */
+static int t1e1override = -1; /* deprecated */
+static char *default_linemode = "auto"; /* 'auto', 'e1', 't1', or 'j1' */
+static int latency = VOICEBUS_DEFAULT_LATENCY;
+static unsigned int max_latency = VOICEBUS_DEFAULT_MAXLATENCY;
+static int vpmsupport = 1;
+static int vpmtsisupport = 0;
+
+static int vpmnlptype = DEFAULT_NLPTYPE;
+static int vpmnlpthresh = DEFAULT_NLPTHRESH;
+static int vpmnlpmaxsupp = DEFAULT_NLPMAXSUPP;
+
+static void echocan_free(struct dahdi_chan *chan, struct dahdi_echocan_state *ec);
+static int t1xxp_clear_maint(struct dahdi_span *span);
+
+static const struct dahdi_echocan_features vpm150m_ec_features = {
+	.NLP_automatic = 1,
+	.CED_tx_detect = 1,
+	.CED_rx_detect = 1,
+};
+
+static const struct dahdi_echocan_ops vpm150m_ec_ops = {
+	.echocan_free = echocan_free,
+};
+
+static struct t1 *ifaces[WC_MAX_IFACES];
+
+struct t1_desc {
+	const char *name;
+};
+
+static const struct t1_desc te120p = {"Wildcard TE120P"};
+static const struct t1_desc te122 = {"Wildcard TE122"};
+static const struct t1_desc te121 = {"Wildcard TE121"};
+
+static inline bool is_pcie(const struct t1 *t1)
+{
+	return (0 == strcmp(t1->variety, te121.name));
+}
+
+/* names of HWEC modules */
+static const char *vpmadt032_name = "VPMADT032";
+static const char *vpmoct_name = "VPMOCT032";
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20)
+static kmem_cache_t *cmd_cache;
+#else
+static struct kmem_cache *cmd_cache;
+#endif
+
+static struct command *get_free_cmd(struct t1 *wc)
+{
+	struct command *cmd;
+	cmd = kmem_cache_alloc(cmd_cache, GFP_ATOMIC);
+	if (cmd) {
+		memset(cmd, 0, sizeof(*cmd));
+		init_completion(&cmd->complete);
+		INIT_LIST_HEAD(&cmd->node);
+	}
+	return cmd;
+}
+
+static void free_cmd(struct t1 *wc, struct command *cmd)
+{
+	kmem_cache_free(cmd_cache, cmd);
+}
+
+static struct command *_get_pending_cmd(struct t1 *wc)
+{
+	struct command *cmd = NULL;
+	if (!list_empty(&wc->pending_cmds)) {
+		cmd = list_entry(wc->pending_cmds.next, struct command, node);
+		list_move_tail(&cmd->node, &wc->active_cmds);
+	}
+	return cmd;
+}
+
+static void submit_cmd(struct t1 *wc, struct command *cmd)
+{
+	unsigned long flags;
+	spin_lock_irqsave(&wc->reglock, flags);
+	list_add_tail(&cmd->node, &wc->pending_cmds);
+	spin_unlock_irqrestore(&wc->reglock, flags);
+}
+
+static void _resend_cmds(struct t1 *wc)
+{
+	list_splice_init(&wc->active_cmds, &wc->pending_cmds);
+	if (wc->vpmadt032)
+		vpmadt032_resend(wc->vpmadt032);
+}
+
+static inline void cmd_dequeue_vpmoct(struct t1 *wc, u8 *eframe)
+{
+	struct vpmoct *vpm = wc->vpmoct;
+	struct vpmoct_cmd *cmd;
+	u8 i;
+
+	/* Pop a command off pending list */
+	spin_lock(&vpm->list_lock);
+	if (list_empty(&vpm->pending_list)) {
+		spin_unlock(&vpm->list_lock);
+		return;
+	}
+	cmd = list_entry(vpm->pending_list.next, struct vpmoct_cmd, node);
+	/* Push the command onto active list, if it's a syncronous cmd */
+	if (is_vpmoct_cmd_read(cmd))
+		list_move_tail(&cmd->node, &vpm->active_list);
+	else
+		list_del_init(&cmd->node);
+
+	/* Skip audio */
+	eframe += 66;
+
+	/* Save ident so we can match the return eframe */
+	cmd->txident = wc->txident;
+	/* We have four timeslots to work with for a regular spi packet */
+	/* TODO: Create debug flag for this in dev */
+	eframe[CMD_BYTE(0, 0, 1)] = 0x12;
+	eframe[CMD_BYTE(0, 1, 1)] = 0x34;
+	eframe[CMD_BYTE(0, 2, 1)] = 0x56;
+	eframe[CMD_BYTE(1, 0, 1)] = cmd->command;
+	eframe[CMD_BYTE(1, 1, 1)] = cmd->address;
+	eframe[CMD_BYTE(1, 2, 1)] = cmd->data[0];
+	for (i = 1; i < cmd->chunksize; i++) {
+		/* Every time slot is filled with chunk data
+		 * ignoring command/address/data structure */
+		eframe[CMD_BYTE(1, 2, 1) + 2*i] = cmd->data[i];
+	}
+
+	/* Clean up fire-and-forget messages from memory */
+	if (list_empty(&cmd->node))
+		kfree(cmd);
+
+	spin_unlock(&vpm->list_lock);
+#if 0
+	dev_info(&wc->vb.pdev->dev, "Wrote: ");
+	for (i = 0; i < 7; i++) {
+		dev_info(&wc->vb.pdev->dev, "|%x %x %x|",
+				eframe[CMD_BYTE(i, 0, 1)],
+				eframe[CMD_BYTE(i, 1, 1)],
+				eframe[CMD_BYTE(i, 2, 1)]);
+	}
+#endif
+}
+
+static void cmd_dequeue(struct t1 *wc, unsigned char *eframe, int frame_num, int slot)
+{
+	struct command *curcmd=NULL;
+	u16 address;
+	u8 data;
+	u32 flags;
+
+	/* Skip audio */
+	eframe += 66;
+	/* Search for something waiting to transmit */
+	if ((slot < 6) && (frame_num) && (frame_num < DAHDI_CHUNKSIZE - 1)) {
+		/* only 6 useable cs slots per */
+
+		/* framer */
+		curcmd = _get_pending_cmd(wc);
+		if (curcmd) {
+			curcmd->cs_slot = slot;
+			curcmd->ident = wc->txident;
+
+			address = curcmd->address;
+			data = curcmd->data;
+			flags = curcmd->flags;
+		} else {
+			/* If nothing else, use filler */
+			address = 0x4a;
+			data = 0;
+			flags = __CMD_RD;
+		}
+
+		if (flags & __CMD_WR)
+			eframe[CMD_BYTE(slot, 0, 0)] = 0x0c; /* 0c write command */
+		else if (flags & __CMD_LEDS)
+			eframe[CMD_BYTE(slot, 0, 0)] = 0x10 | ((address) & 0x0E); /* led set command */
+		else if (flags & __CMD_PINS)
+			eframe[CMD_BYTE(slot, 0, 0)] = 0x30; /* CPLD2 pin state */
+		else
+			eframe[CMD_BYTE(slot, 0, 0)] = 0x0a; /* read command */
+		eframe[CMD_BYTE(slot, 1, 0)] = address;
+		eframe[CMD_BYTE(slot, 2, 0)] = data;
+	}
+
+}
+
+static inline void cmd_decipher(struct t1 *wc, const u8 *eframe)
+{
+	struct command *cmd = NULL;
+	const int IS_VPM = 0;
+
+	/* Skip audio */
+	eframe += 66;
+
+	while (!list_empty(&wc->active_cmds)) {
+		cmd = list_entry(wc->active_cmds.next, struct command, node);
+		if (cmd->ident != wc->rxident)
+			break;
+
+		if (cmd->flags & (__CMD_WR | __CMD_LEDS)) {
+			/* Nobody is waiting on writes...so let's just
+			 * free them here. */
+			list_del_init(&cmd->node);
+			free_cmd(wc, cmd);
+		} else {
+			cmd->data |= eframe[CMD_BYTE(cmd->cs_slot, 2, IS_VPM)];
+			list_del_init(&cmd->node);
+			complete(&cmd->complete);
+		}
+	}
+}
+
+inline void cmd_decipher_vpmoct(struct t1 *wc, const u8 *eframe)
+{
+	int i;
+	struct vpmoct *vpm = wc->vpmoct;
+	struct vpmoct_cmd *cmd;
+
+	/* Skip audio and first 6 timeslots */
+	eframe += 66;
+
+	spin_lock(&vpm->list_lock);
+	/* No command to handle, just exit */
+	if (list_empty(&vpm->active_list)) {
+		spin_unlock(&vpm->list_lock);
+		return;
+	}
+
+	cmd = list_entry(vpm->active_list.next, struct vpmoct_cmd, node);
+	if (wc->rxident == cmd->txident)
+		list_del_init(&cmd->node);
+	else
+		cmd = NULL;
+	spin_unlock(&vpm->list_lock);
+
+	if (!cmd)
+		return;
+
+#if 0
+	/* Store result */
+	dev_info(&wc->vb.pdev->dev, "Read: ");
+	for (i = 0; i < 7; i++) {
+		dev_info(&wc->vb.pdev->dev, "|%x %x %x|",
+				eframe[CMD_BYTE(i, 0, 1)],
+				eframe[CMD_BYTE(i, 1, 1)],
+				eframe[CMD_BYTE(i, 2, 1)]);
+	}
+	dev_info(&wc->vb.pdev->dev, "\n");
+#endif
+	cmd->command = eframe[CMD_BYTE(1, 0, 1)];
+	cmd->address = eframe[CMD_BYTE(1, 1, 1)];
+	for (i = 0; i < cmd->chunksize; ++i)
+		cmd->data[i] = eframe[CMD_BYTE(1, 2, 1) + 2*i];
+	complete(&cmd->complete);
+}
+
+inline void cmd_decipher_vpmadt032(struct t1 *wc, const u8 *eframe)
+{
+	struct vpmadt032 *vpm = wc->vpmadt032;
+	struct vpmadt032_cmd *cmd;
+
+	BUG_ON(!vpm);
+
+	/* If the hardware is not processing any commands currently, then
+	 * there is nothing for us to do here. */
+	if (list_empty(&vpm->active_cmds)) {
+		return;
+	}
+
+	spin_lock(&vpm->list_lock);
+	cmd = list_entry(vpm->active_cmds.next, struct vpmadt032_cmd, node);
+	if (wc->rxident == cmd->txident) {
+		list_del_init(&cmd->node);
+	} else {
+		cmd = NULL;
+	}
+	spin_unlock(&vpm->list_lock);
+
+	if (!cmd) {
+		return;
+	}
+
+	/* Skip audio */
+	eframe += 66;
+
+	/* Store result */
+	cmd->data  = (0xff & eframe[CMD_BYTE(2, 1, 1)]) << 8;
+	cmd->data |= eframe[CMD_BYTE(2, 2, 1)];
+	if (cmd->desc & __VPM150M_WR) {
+		kfree(cmd);
+	} else {
+		cmd->desc |= __VPM150M_FIN;
+		complete(&cmd->complete);
+	}
+}
+
+static int config_vpmadt032(struct vpmadt032 *vpm, struct t1 *wc)
+{
+	int res, channel;
+	GpakPortConfig_t portconfig = {0};
+	gpakConfigPortStatus_t configportstatus;
+	GPAK_PortConfigStat_t pstatus;
+	GpakChannelConfig_t chanconfig;
+	GPAK_ChannelConfigStat_t cstatus;
+	GPAK_AlgControlStat_t algstatus;
+
+	/* First Serial Port config */
+	portconfig.SlotsSelect1 = SlotCfgNone;
+	portconfig.FirstBlockNum1 = 0;
+	portconfig.FirstSlotMask1 = 0x0000;
+	portconfig.SecBlockNum1 = 1;
+	portconfig.SecSlotMask1 = 0x0000;
+	portconfig.SerialWordSize1 = SerWordSize8;
+	portconfig.CompandingMode1 = cmpNone;
+	portconfig.TxFrameSyncPolarity1 = FrameSyncActHigh;
+	portconfig.RxFrameSyncPolarity1 = FrameSyncActHigh;
+	portconfig.TxClockPolarity1 = SerClockActHigh;
+	portconfig.RxClockPolarity1 = SerClockActHigh;
+	portconfig.TxDataDelay1 = DataDelay0;
+	portconfig.RxDataDelay1 = DataDelay0;
+	portconfig.DxDelay1 = Disabled;
+	portconfig.ThirdSlotMask1 = 0x0000;
+	portconfig.FouthSlotMask1 = 0x0000;
+	portconfig.FifthSlotMask1 = 0x0000;
+	portconfig.SixthSlotMask1 = 0x0000;
+	portconfig.SevenSlotMask1 = 0x0000;
+	portconfig.EightSlotMask1 = 0x0000;
+
+	/* Second Serial Port config */
+	portconfig.SlotsSelect2 = SlotCfg8Groups;
+	portconfig.FirstBlockNum2 = 0;
+	portconfig.FirstSlotMask2 = 0x5554;
+	portconfig.SecBlockNum2 = 1;
+	portconfig.SecSlotMask2 = 0x5555;
+	portconfig.ThirdSlotMask2 = 0x5555;
+	portconfig.FouthSlotMask2 = 0x5555;
+	portconfig.SerialWordSize2 = SerWordSize8;
+	portconfig.CompandingMode2 = cmpNone;
+	portconfig.TxFrameSyncPolarity2 = FrameSyncActHigh;
+	portconfig.RxFrameSyncPolarity2 = FrameSyncActHigh;
+	portconfig.TxClockPolarity2 = SerClockActHigh;
+	portconfig.RxClockPolarity2 = SerClockActHigh;
+	portconfig.TxDataDelay2 = DataDelay0;
+	portconfig.RxDataDelay2 = DataDelay0;
+	portconfig.DxDelay2 = Disabled;
+	portconfig.FifthSlotMask2 = 0x0001;
+	portconfig.SixthSlotMask2 = 0x0000;
+	portconfig.SevenSlotMask2 = 0x0000;
+	portconfig.EightSlotMask2 = 0x0000;
+
+	/* Third Serial Port Config */
+	portconfig.SlotsSelect3 = SlotCfg8Groups;
+	portconfig.FirstBlockNum3 = 0;
+	portconfig.FirstSlotMask3 = 0x5554;
+	portconfig.SecBlockNum3 = 1;
+	portconfig.SecSlotMask3 = 0x5555;
+	portconfig.SerialWordSize3 = SerWordSize8;
+	portconfig.CompandingMode3 = cmpNone;
+	portconfig.TxFrameSyncPolarity3 = FrameSyncActHigh;
+	portconfig.RxFrameSyncPolarity3 = FrameSyncActHigh;
+	portconfig.TxClockPolarity3 = SerClockActHigh;
+	portconfig.RxClockPolarity3 = SerClockActLow;
+	portconfig.TxDataDelay3 = DataDelay0;
+	portconfig.RxDataDelay3 = DataDelay0;
+	portconfig.DxDelay3 = Disabled;
+	portconfig.ThirdSlotMask3 = 0x5555;
+	portconfig.FouthSlotMask3 = 0x5555;
+	portconfig.FifthSlotMask3 = 0x0001;
+	portconfig.SixthSlotMask3 = 0x0000;
+	portconfig.SevenSlotMask3 = 0x0000;
+	portconfig.EightSlotMask3 = 0x0000;
+
+	if ((configportstatus = gpakConfigurePorts(vpm->dspid, &portconfig, &pstatus))) {
+		t1_info(wc, "Configuration of ports failed (%d)!\n",
+			configportstatus);
+		return -1;
+	} else {
+		if (vpm->options.debug & DEBUG_VPMADT032_ECHOCAN)
+			t1_info(wc, "Configured McBSP ports successfully\n");
+	}
+
+	if ((res = gpakPingDsp(vpm->dspid, &vpm->version))) {
+		t1_info(wc, "Error pinging DSP (%d)\n", res);
+		return -1;
+	}
+
+	for (channel = 0; channel < ARRAY_SIZE(vpm->curecstate); ++channel) {
+		vpm->curecstate[channel].tap_length = 0;
+		vpm->curecstate[channel].nlp_type = vpm->options.vpmnlptype;
+		vpm->curecstate[channel].nlp_threshold = vpm->options.vpmnlpthresh;
+		vpm->curecstate[channel].nlp_max_suppress = vpm->options.vpmnlpmaxsupp;
+
+		vpm->setchanconfig_from_state(vpm, channel, &chanconfig);
+		if ((res = gpakConfigureChannel(vpm->dspid, channel, tdmToTdm, &chanconfig, &cstatus))) {
+			t1_info(wc, "Unable to configure channel #%d (%d)",
+				channel, res);
+			if (res == 1) {
+				printk(KERN_CONT ", reason %d", cstatus);
+			}
+			printk(KERN_CONT "\n");
+			return -1;
+		}
+
+		if ((res = gpakAlgControl(vpm->dspid, channel, BypassEcanA, &algstatus))) {
+			t1_info(wc, "Unable to disable echo can on channel %d "
+				"(reason %d:%d)\n", channel + 1, res,
+				algstatus);
+			return -1;
+		}
+	}
+
+	if ((res = gpakPingDsp(vpm->dspid, &vpm->version))) {
+		t1_info(wc, "Error pinging DSP (%d)\n", res);
+		return -1;
+	}
+
+	set_bit(VPM150M_ACTIVE, &vpm->control);
+
+	return 0;
+}
+
+#define debug_printk(wc, lvl, fmt, args...) if (debug >= (lvl)) do { \
+	t1_info((wc), fmt , ## args); } while (0)
+
+static void cmd_dequeue_vpmadt032(struct t1 *wc, unsigned char *eframe)
+{
+	struct vpmadt032_cmd *cmd;
+	struct vpmadt032 *vpm = wc->vpmadt032;
+	int x;
+	unsigned char leds = ~((atomic_read(&wc->txints) / 1000) % 8) & 0x7;
+
+	/* Skip audio */
+	eframe += 66;
+
+	if (test_bit(VPM150M_HPIRESET, &vpm->control)) {
+		debug_printk(wc, 1, "HW Resetting VPMADT032 ...\n");
+		for (x = 0; x < 4; x++) {
+			if (!x) {
+				if (test_and_clear_bit(VPM150M_HPIRESET,
+						       &vpm->control)) {
+					eframe[CMD_BYTE(x, 0, 1)] = 0x0b;
+				} else {
+					eframe[CMD_BYTE(x, 0, 1)] = leds;
+				}
+			} else {
+				eframe[CMD_BYTE(x, 0, 1)] = 0x00 | leds;
+			}
+			eframe[CMD_BYTE(x, 1, 1)] = 0;
+			eframe[CMD_BYTE(x, 2, 1)] = 0x00;
+		}
+		return;
+	}
+
+	if ((cmd = vpmadt032_get_ready_cmd(vpm))) {
+		cmd->txident = wc->txident;
+#if 0
+		printk(KERN_DEBUG "Found command txident = %d, desc = 0x%x, addr = 0x%x, data = 0x%x\n", cmd->txident, cmd->desc, cmd->address, cmd->data);
+#endif
+		if (cmd->desc & __VPM150M_RWPAGE) {
+			/* Set CTRL access to page*/
+			eframe[CMD_BYTE(0, 0, 1)] = (0x8 << 4);
+			eframe[CMD_BYTE(0, 1, 1)] = 0;
+			eframe[CMD_BYTE(0, 2, 1)] = 0x20;
+
+			/* Do a page write */
+			if (cmd->desc & __VPM150M_WR) {
+				eframe[CMD_BYTE(1, 0, 1)] = ((0x8 | 0x4) << 4);
+			} else {
+				eframe[CMD_BYTE(1, 0, 1)] = ((0x8 | 0x4 | 0x1) << 4);
+			}
+			eframe[CMD_BYTE(1, 1, 1)] = 0;
+			if (cmd->desc & __VPM150M_WR) {
+				eframe[CMD_BYTE(1, 2, 1)] = cmd->data & 0xf;
+			} else {
+				eframe[CMD_BYTE(1, 2, 1)] = 0;
+			}
+
+			if (cmd->desc & __VPM150M_WR) {
+				/* Fill in buffer to size */
+				eframe[CMD_BYTE(2, 0, 1)] = 0;
+				eframe[CMD_BYTE(2, 1, 1)] = 0;
+				eframe[CMD_BYTE(2, 2, 1)] = 0;
+			} else {
+				/* Do reads twice b/c of vpmadt032 bug */
+				eframe[CMD_BYTE(2, 0, 1)] = ((0x8 | 0x4 | 0x1) << 4);
+				eframe[CMD_BYTE(2, 1, 1)] = 0;
+				eframe[CMD_BYTE(2, 2, 1)] = 0;
+			}
+
+			/* Clear XADD */
+			eframe[CMD_BYTE(3, 0, 1)] = (0x8 << 4);
+			eframe[CMD_BYTE(3, 1, 1)] = 0;
+			eframe[CMD_BYTE(3, 2, 1)] = 0;
+
+			/* Fill in buffer to size */
+			eframe[CMD_BYTE(4, 0, 1)] = 0;
+			eframe[CMD_BYTE(4, 1, 1)] = 0;
+			eframe[CMD_BYTE(4, 2, 1)] = 0;
+
+		} else {
+			/* Set address */
+			eframe[CMD_BYTE(0, 0, 1)] = ((0x8 | 0x4) << 4);
+			eframe[CMD_BYTE(0, 1, 1)] = (cmd->address >> 8) & 0xff;
+			eframe[CMD_BYTE(0, 2, 1)] = cmd->address & 0xff;
+
+			/* Send/Get our data */
+			if (cmd->desc & __VPM150M_WR) {
+				eframe[CMD_BYTE(1, 0, 1)] = ((0x8 | (0x3 << 1)) << 4);
+			} else {
+				eframe[CMD_BYTE(1, 0, 1)] = ((0x8 | (0x3 << 1) | 0x1) << 4);
+			}
+			eframe[CMD_BYTE(1, 1, 1)] = (cmd->data >> 8) & 0xff;
+			eframe[CMD_BYTE(1, 2, 1)] = cmd->data & 0xff;
+
+			if (cmd->desc & __VPM150M_WR) {
+				/* Fill in */
+				eframe[CMD_BYTE(2, 0, 1)] = 0;
+				eframe[CMD_BYTE(2, 1, 1)] = 0;
+				eframe[CMD_BYTE(2, 2, 1)] = 0;
+			} else {
+				/* Do this again for reads b/c of the bug in vpmadt032 */
+				eframe[CMD_BYTE(2, 0, 1)] = ((0x8 | (0x3 << 1) | 0x1) << 4);
+				eframe[CMD_BYTE(2, 1, 1)] = (cmd->data >> 8) & 0xff;
+				eframe[CMD_BYTE(2, 2, 1)] = cmd->data & 0xff;
+			}
+
+			/* Fill in the rest */
+			eframe[CMD_BYTE(3, 0, 1)] = 0;
+			eframe[CMD_BYTE(3, 1, 1)] = 0;
+			eframe[CMD_BYTE(3, 2, 1)] = 0;
+
+			/* Fill in the rest */
+			eframe[CMD_BYTE(4, 0, 1)] = 0;
+			eframe[CMD_BYTE(4, 1, 1)] = 0;
+			eframe[CMD_BYTE(4, 2, 1)] = 0;
+		}
+	} else if (test_and_clear_bit(VPM150M_SWRESET, &vpm->control)) {
+		for (x = 0; x < 7; x++) {
+			if (0 == x)  {
+				eframe[CMD_BYTE(x, 0, 1)] = (0x8 << 4);
+			} else {
+				eframe[CMD_BYTE(x, 0, 1)] = 0x00;
+			}
+			eframe[CMD_BYTE(x, 1, 1)] = 0;
+			if (0 == x) {
+				eframe[CMD_BYTE(x, 2, 1)] = 0x01;
+			} else {
+				eframe[CMD_BYTE(x, 2, 1)] = 0x00;
+			}
+		}
+	} else {
+		for (x = 0; x < 7; x++) {
+			eframe[CMD_BYTE(x, 0, 1)] = 0x00;
+			eframe[CMD_BYTE(x, 1, 1)] = 0x00;
+			eframe[CMD_BYTE(x, 2, 1)] = 0x00;
+		}
+	}
+
+	/* Add our leds in */
+	for (x = 0; x < 7; x++)
+		eframe[CMD_BYTE(x, 0, 1)] |= leds;
+}
+
+static inline int t1_setreg(struct t1 *wc, int addr, int val)
+{
+	struct command *cmd;
+	cmd = get_free_cmd(wc);
+	if (!cmd) {
+		WARN_ON(1);
+		return -ENOMEM;
+	}
+	cmd->address = addr;
+	cmd->data = val;
+	cmd->flags |= __CMD_WR;
+	submit_cmd(wc, cmd);
+	return 0;
+}
+
+static void __t1_getreg(struct t1 *wc, int addr, struct command *cmd)
+{
+	cmd->address = addr;
+	cmd->data = 0x00;
+	cmd->flags = __CMD_RD;
+	submit_cmd(wc, cmd);
+}
+
+static int __t1_getresult(struct t1 *wc, struct command *cmd)
+{
+	int ret;
+	unsigned long flags;
+
+	might_sleep();
+
+	if (test_bit(IOERROR, &wc->bit_flags)) {
+		spin_lock_irqsave(&wc->reglock, flags);
+		list_del_init(&cmd->node);
+		spin_unlock_irqrestore(&wc->reglock, flags);
+		if (printk_ratelimit()) {
+			dev_warn(&wc->vb.pdev->dev,
+				 "Timeout in %s\n", __func__);
+		}
+		return -EIO;
+	}
+
+	ret = wait_for_completion_interruptible_timeout(&cmd->complete, HZ*10);
+	if (unlikely(!ret)) {
+		spin_lock_irqsave(&wc->reglock, flags);
+		if (!list_empty(&cmd->node)) {
+			/* Since we've removed this command from the list, we
+			 * can go ahead and free it right away. */
+			list_del_init(&cmd->node);
+			spin_unlock_irqrestore(&wc->reglock, flags);
+			if (-ERESTARTSYS != ret) {
+				if (printk_ratelimit()) {
+					dev_warn(&wc->vb.pdev->dev,
+						 "Timeout in %s\n", __func__);
+				}
+				ret = -EIO;
+				set_bit(IOERROR, &wc->bit_flags);
+			}
+			return ret;
+		} else {
+			/* Looks like this command was removed from the list by
+			 * someone else already. Let's wait for them to complete
+			 * it so that we don't free up the memory. */
+			spin_unlock_irqrestore(&wc->reglock, flags);
+			ret = wait_for_completion_timeout(&cmd->complete, HZ*2);
+			WARN_ON(!ret);
+			ret = cmd->data;
+			return ret;
+		}
+	}
+	ret = cmd->data;
+	return ret;
+}
+
+static int t1_getreg(struct t1 *wc, int addr)
+{
+	int res;
+	struct command *cmd =  NULL;
+	cmd = get_free_cmd(wc);
+	if (!cmd)
+		return -ENOMEM;
+	__t1_getreg(wc, addr, cmd);
+	res = __t1_getresult(wc, cmd);
+	free_cmd(wc, cmd);
+	return res;
+}
+
+static void t1_setleds(struct t1 *wc, int leds)
+{
+	struct command *cmd;
+
+	leds = (~leds) & 0x0E; /* invert the LED bits (3 downto 1)*/
+
+	cmd = get_free_cmd(wc);
+	if (!cmd)
+		return;
+	cmd->flags |= __CMD_LEDS;
+	cmd->address = leds;
+	submit_cmd(wc, cmd);
+}
+
+/**
+ * t1_getpins - Returns the value of the jumpers on the card.
+ * @wc:	The card to read from.
+ * @pins: Pointer to u8 character to hold the pins value.
+ *
+ * Returns 0 on success, otherwise an error code.
+ *
+ */
+static int t1_getpins(struct t1 *wc, u8 *pins)
+{
+	struct command *cmd;
+	unsigned long flags;
+	unsigned long ret;
+
+	*pins = 0;
+
+	cmd = get_free_cmd(wc);
+	BUG_ON(!cmd);
+
+	cmd->address = 0x00;
+	cmd->data = 0x00;
+	cmd->flags = __CMD_PINS;
+	submit_cmd(wc, cmd);
+	ret = wait_for_completion_interruptible_timeout(&cmd->complete, HZ*2);
+	if (unlikely(!ret)) {
+		spin_lock_irqsave(&wc->reglock, flags);
+		list_del_init(&cmd->node);
+		spin_unlock_irqrestore(&wc->reglock, flags);
+		free_cmd(wc, cmd);
+		if (-ERESTARTSYS != ret) {
+			if (printk_ratelimit()) {
+				dev_warn(&wc->vb.pdev->dev,
+					 "Timeout in %s\n", __func__);
+			}
+			ret = -EIO;
+		}
+		return ret;
+	}
+	*pins = cmd->data;
+	free_cmd(wc, cmd);
+	return 0;
+}
+
+static void __t1xxp_set_clear(struct t1 *wc)
+{
+	int i, offset;
+	int ret;
+	unsigned short reg[3] = {0, 0, 0};
+
+	/* Calculate all states on all 24 channels using the channel
+	   flags, then write all 3 clear channel registers at once */
+
+	for (i = 0; i < wc->span.channels; i++) {
+		offset = i/8;
+		if (wc->span.chans[i]->flags & DAHDI_FLAG_CLEAR)
+			reg[offset] |= 1 << (7 - (i % 8));
+		else
+			reg[offset] &= ~(1 << (7 - (i % 8)));
+	}
+
+	ret = t1_setreg(wc, CCB1, reg[0]);
+	if (ret < 0)
+		t1_info(wc, "Unable to set clear/rbs mode!\n");
+
+	ret = t1_setreg(wc, CCB2, reg[1]);
+	if (ret < 0)
+		t1_info(wc, "Unable to set clear/rbs mode!\n");
+
+	ret = t1_setreg(wc, CCB3, reg[2]);
+	if (ret < 0)
+		t1_info(wc, "Unable to set clear/rbs mode!\n");
+}
+
+/**
+ * _t1_free_channels - Free the memory allocated for the channels.
+ *
+ * Must be called with wc->reglock held.
+ *
+ */
+static void _t1_free_channels(struct t1 *wc)
+{
+	int x;
+	for (x = 0; x < ARRAY_SIZE(wc->chans); x++) {
+		kfree(wc->chans[x]);
+		kfree(wc->ec[x]);
+		wc->chans[x] = NULL;
+		wc->ec[x] = NULL;
+	}
+}
+
+static void free_wc(struct t1 *wc)
+{
+	unsigned long flags;
+	struct command *cmd;
+	LIST_HEAD(list);
+
+	spin_lock_irqsave(&wc->reglock, flags);
+	_t1_free_channels(wc);
+	list_splice_init(&wc->active_cmds, &list);
+	list_splice_init(&wc->pending_cmds, &list);
+	spin_unlock_irqrestore(&wc->reglock, flags);
+	while (!list_empty(&list)) {
+		cmd = list_entry(list.next, struct command, node);
+		list_del_init(&cmd->node);
+		free_cmd(wc, cmd);
+	}
+
+	if (wc->wq)
+		destroy_workqueue(wc->wq);
+
+#ifdef CONFIG_VOICEBUS_ECREFERENCE
+	for (x = 0; x < ARRAY_SIZE(wc->ec_reference); ++x) {
+		if (wc->ec_reference[x])
+			dahdi_fifo_free(wc->ec_reference[x]);
+	}
+#endif
+
+	kfree(wc->ddev->location);
+	kfree(wc->ddev->devicetype);
+	dahdi_free_device(wc->ddev);
+	kfree(wc);
+}
+
+/**
+ * t1_reset_registers - Put register back to their default values 
+ *
+ * Since the card does not have an ability to reset just the framer
+ * specifically, we need to write all the default values to the framer.
+ *
+ */
+static void t1_reset_registers(struct t1 *wc)
+{
+	int i;
+	struct t1_reg {
+		u8 address;
+		u8 value;
+	} __attribute__((packed));
+	struct t1_reg *reg;
+	static struct t1_reg DEFAULT_REGS[] = {
+		{0x00, 0x7d}, {0x01, 0x7d}, {0x02, 0x00}, {0x03, 0x00},
+		{0x04, 0xfd}, {0x05, 0xff}, {0x06, 0xff}, {0x07, 0xff},
+		{0x08, 0x05}, {0x09, 0x00}, {0x0a, 0x00}, {0x0b, 0x00},
+		{0x0c, 0x00}, {0x0d, 0x00}, {0x0e, 0x00}, {0x0f, 0x00},
+		{0x10, 0x00}, {0x11, 0x00}, {0x12, 0x00}, {0x13, 0x00},
+		{0x14, 0xff}, {0x15, 0xff}, {0x16, 0xff}, {0x17, 0xff},
+		{0x18, 0xff}, {0x19, 0xff}, {0x1a, 0x00}, {0x1b, 0x00},
+		{0x1c, 0x00}, {0x1d, 0x00}, {0x1e, 0x00}, {0x1f, 0x00},
+		{0x20, 0x00}, {0x21, 0x00}, {0x22, 0x00}, {0x23, 0x04},
+		{0x24, 0x00}, {0x25, 0x05}, {0x26, 0x7b}, {0x27, 0x03},
+		{0x28, 0x40}, {0x29, 0x00}, {0x2a, 0x00}, {0x2b, 0x00},
+		{0x2c, 0x00}, {0x2d, 0x00}, {0x2e, 0x00}, {0x2f, 0x00},
+		{0x30, 0x00}, {0x31, 0x00}, {0x32, 0x00}, {0x33, 0x00},
+		{0x34, 0x00}, {0x35, 0x00}, {0x36, 0x00}, {0x37, 0x80},
+		{0x38, 0x00}, {0x39, 0x00}, {0x3a, 0x20}, {0x3b, 0x00},
+		{0x3c, 0x00}, {0x3d, 0x00}, {0x3e, 0x0a}, {0x3f, 0x00},
+		{0x40, 0x04}, {0x41, 0x00}, {0x42, 0x00}, {0x43, 0x00},
+		{0x44, 0x30}, {0x45, 0x00}, {0x46, 0xc0}, {0x47, 0xff},
+		{0x48, 0x00}, {0x49, 0x1c}, {0x4a, 0x05}, {0x4b, 0x03},
+		{0x4c, 0xa3}, {0x4d, 0x28}, {0x4e, 0x00}, {0x4f, 0xc0},
+		{0x50, 0x00}, {0x51, 0x00}, {0x52, 0x00}, {0x53, 0x00},
+		{0x54, 0x00}, {0x55, 0x00}, {0x56, 0x00}, {0x57, 0x00},
+		{0x58, 0x00}, {0x59, 0x00}, {0x5a, 0x00}, {0x5b, 0x00},
+		{0x5c, 0x00}, {0x5d, 0x00}, {0x5e, 0x00}, {0x5f, 0x00},
+		{0x60, 0x00}, {0x61, 0x20}, {0x62, 0x00}, {0x63, 0x00},
+		{0x64, 0x5a}, {0x65, 0x02}, {0x66, 0x00}, {0x67, 0x00},
+		{0x68, 0x10}, {0x69, 0x09}, {0x6a, 0x00}, {0x6b, 0x03},
+		{0x6c, 0x00}, {0x6d, 0xc0}, {0x6e, 0x40}, {0x6f, 0x00},
+		{0x70, 0x00}, {0x71, 0x00}, {0x72, 0x00}, {0x73, 0x00},
+		{0x74, 0x00}, {0x75, 0x00}, {0x76, 0x00}, {0x77, 0x00},
+		{0x78, 0x00}, {0x79, 0x00}, {0x7a, 0x00}, {0x7b, 0x00},
+		{0x7c, 0x00}, {0x7d, 0x00}, {0x7e, 0x00}, {0x7f, 0x00},
+		{0x80, 0x00}, {0x81, 0x22}, {0x82, 0x65}, {0x83, 0x35},
+		{0x84, 0x31}, {0x85, 0x60}, {0x86, 0x03}, {0x87, 0x00},
+		{0x88, 0x00}, {0x89, 0x00}, {0x8a, 0x00}, {0x8b, 0x00},
+		{0x8c, 0x00}, {0x8d, 0x00}, {0x8e, 0x00}, {0x8f, 0x00},
+		{0x90, 0x00}, {0x91, 0x00}, {0x92, 0x00}, {0x93, 0x18},
+		{0x94, 0xfb}, {0x95, 0x0b}, {0x96, 0x00}, {0x97, 0x0b},
+		{0x98, 0xdb}, {0x99, 0xdf}, {0x9a, 0x48}, {0x9b, 0x00},
+		{0x9c, 0x3f}, {0x9d, 0x3f}, {0x9e, 0x77}, {0x9f, 0x77},
+		{0xa0, 0x00}, {0xa1, 0xff}, {0xa2, 0xff}, {0xa3, 0xff},
+		{0xa4, 0x00}, {0xa5, 0x00}, {0xa6, 0x00}, {0xa7, 0x00},
+		{0xa8, 0x00}
+	};
+
+	for (i = 0; i < ARRAY_SIZE(DEFAULT_REGS); ++i) {
+		reg = &DEFAULT_REGS[i];
+		t1_setreg(wc, reg->address, reg->value);
+	}
+	/* Flush previous writes. */
+	t1_getreg(wc, 0x1d);
+}
+
+static void t4_serial_setup(struct t1 *wc)
+{
+	t1_setreg(wc, 0x85, 0xe0);	/* GPC1: Multiplex mode enabled, FSC is output, active low, RCLK from channel 0 */
+	t1_setreg(wc, 0x08, 0x05);	/* IPC: Interrupt push/pull active low */
+
+	/* Global clocks (8.192 Mhz CLK) */
+	t1_setreg(wc, 0x92, 0x00);	
+	t1_setreg(wc, 0x93, 0x18);
+	t1_setreg(wc, 0x94, 0xfb);
+	t1_setreg(wc, 0x95, 0x0b);
+	t1_setreg(wc, 0x96, 0x00);
+	t1_setreg(wc, 0x97, 0x0b);
+	t1_setreg(wc, 0x98, 0xdb);
+	t1_setreg(wc, 0x99, 0xdf);
+
+	/* Configure interrupts */	
+	t1_setreg(wc, 0x46, 0xc0);	/* GCR: Interrupt on Activation/Deactivation of AIX, LOS */
+
+	/* Configure system interface */
+	t1_setreg(wc, 0x3e, 0x0a /* 0x02 */);	/* SIC1: 4.096 Mhz clock/bus, double buffer receive / transmit, byte interleaved */
+	t1_setreg(wc, 0x3f, 0x00); 	/* SIC2: No FFS, no center receive eliastic buffer, phase 0 */
+	t1_setreg(wc, 0x40, 0x04);	/* SIC3: Edges for capture */
+	t1_setreg(wc, 0x44, 0x30);	/* CMR1: RCLK is at 8.192 Mhz dejittered */
+	t1_setreg(wc, 0x45, 0x00);	/* CMR2: We provide sync and clock for tx and rx. */
+	t1_setreg(wc, 0x22, 0x00);	/* XC0: Normal operation of Sa-bits */
+	t1_setreg(wc, 0x23, 0x04);	/* XC1: 0 offset */
+	t1_setreg(wc, 0x24, 0x00);	/* RC0: Just shy of 255 */
+	t1_setreg(wc, 0x25, 0x05);	/* RC1: The rest of RC0 */
+	
+	/* Configure ports */
+	t1_setreg(wc, 0x80, 0x00);	/* PC1: SPYR/SPYX input on RPA/XPA */
+	t1_setreg(wc, 0x81, 0x22);	/* PC2: RMFB/XSIG output/input on RPB/XPB */
+	t1_setreg(wc, 0x82, 0x65);	/* PC3: Some unused stuff */
+	t1_setreg(wc, 0x83, 0x35);	/* PC4: Some more unused stuff */
+	t1_setreg(wc, 0x84, 0x31);	/* PC5: XMFS active low, SCLKR is input, RCLK is output */
+	t1_setreg(wc, 0x86, 0x03);	/* PC6: CLK1 is Tx Clock output, CLK2 is 8.192 Mhz from DCO-R */
+	t1_setreg(wc, 0x3b, 0x00);	/* Clear LCR1 */
+}
+
+static void t1_configure_t1(struct t1 *wc, int lineconfig, int txlevel)
+{
+	unsigned int fmr4, fmr2, fmr1, fmr0, lim2;
+	char *framing, *line;
+	int mytxlevel;
+
+	if ((txlevel > 7) || (txlevel < 4))
+		mytxlevel = 0;
+	else
+		mytxlevel = txlevel - 4;
+	fmr1 = 0x9e; /* FMR1: Mode 0, T1 mode, CRC on for ESF, 2.048 Mhz system data rate, no XAIS */
+	fmr2 = 0x20; /* FMR2: no payload loopback, don't auto yellow alarm */
+
+
+	if (SPANTYPE_DIGITAL_J1 == wc->span.spantype)
+		fmr4 = 0x1c;
+	else
+		fmr4 = 0x0c; /* FMR4: Lose sync on 2 out of 5 framing bits, auto resync */
+
+	lim2 = 0x21; /* LIM2: 50% peak is a "1", Advanced Loss recovery */
+	lim2 |= (mytxlevel << 6);	/* LIM2: Add line buildout */
+	t1_setreg(wc, 0x1d, fmr1);
+	t1_setreg(wc, 0x1e, fmr2);
+
+	/* Configure line interface */
+	if (lineconfig & DAHDI_CONFIG_AMI) {
+		line = "AMI";
+		fmr0 = 0xa0;
+	} else {
+		line = "B8ZS";
+		fmr0 = 0xf0;
+	}
+	if (lineconfig & DAHDI_CONFIG_D4) {
+		framing = "D4";
+	} else {
+		framing = "ESF";
+		fmr4 |= 0x2;
+		fmr2 |= 0xc0;
+	}
+	t1_setreg(wc, 0x1c, fmr0);
+
+	t1_setreg(wc, 0x20, fmr4);
+	t1_setreg(wc, 0x21, 0x40);	/* FMR5: Enable RBS mode */
+
+	t1_setreg(wc, 0x37, 0xf8);	/* LIM1: Clear data in case of LOS, Set receiver threshold (0.5V), No remote loop, no DRS */
+	t1_setreg(wc, 0x36, 0x08);	/* LIM0: Enable auto long haul mode, no local loop (must be after LIM1) */
+
+	t1_setreg(wc, 0x02, 0x50);	/* CMDR: Reset the receiver and transmitter line interface */
+	t1_setreg(wc, 0x02, 0x00);	/* CMDR: Reset the receiver and transmitter line interface */
+
+	t1_setreg(wc, 0x3a, lim2);	/* LIM2: 50% peak amplitude is a "1" */
+	t1_setreg(wc, 0x38, 0x0a);	/* PCD: LOS after 176 consecutive "zeros" */
+	t1_setreg(wc, 0x39, 0x15);	/* PCR: 22 "ones" clear LOS */
+
+	if (SPANTYPE_DIGITAL_J1 == wc->span.spantype)
+		t1_setreg(wc, 0x24, 0x80); /* J1 overide */
+		
+	/* Generate pulse mask for T1 */
+	switch (mytxlevel) {
+	case 3:
+		t1_setreg(wc, 0x26, 0x07);	/* XPM0 */
+		t1_setreg(wc, 0x27, 0x01);	/* XPM1 */
+		t1_setreg(wc, 0x28, 0x00);	/* XPM2 */
+		break;
+	case 2:
+		t1_setreg(wc, 0x26, 0x8c);	/* XPM0 */
+		t1_setreg(wc, 0x27, 0x11);	/* XPM1 */
+		t1_setreg(wc, 0x28, 0x01);	/* XPM2 */
+		break;
+	case 1:
+		t1_setreg(wc, 0x26, 0x8c);	/* XPM0 */
+		t1_setreg(wc, 0x27, 0x01);	/* XPM1 */
+		t1_setreg(wc, 0x28, 0x00);	/* XPM2 */
+		break;
+	case 0:
+	default:
+		t1_setreg(wc, 0x26, 0xd7);	/* XPM0 */
+		t1_setreg(wc, 0x27, 0x22);	/* XPM1 */
+		t1_setreg(wc, 0x28, 0x01);	/* XPM2 */
+		break;
+	}
+
+	if (debug)
+		t1_info(wc, "Span configured for %s/%s\n", framing, line);
+}
+
+static void t1_configure_e1(struct t1 *wc, int lineconfig)
+{
+	unsigned int fmr2, fmr1, fmr0;
+	unsigned int cas = 0;
+	char *crc4 = "";
+	char *framing, *line;
+
+	fmr1 = 0x46; /* FMR1: E1 mode, Automatic force resync, PCM30 mode, 8.192 Mhz backplane, no XAIS */
+	fmr2 = 0x03; /* FMR2: Auto transmit remote alarm, auto loss of multiframe recovery, no payload loopback */
+
+	if (lineconfig & DAHDI_CONFIG_CRC4) {
+		fmr1 |= 0x08;	/* CRC4 transmit */
+		fmr2 |= 0xc0;	/* CRC4 receive */
+		crc4 = "/CRC4";
+	}
+	t1_setreg(wc, 0x1d, fmr1);
+	t1_setreg(wc, 0x1e, fmr2);
+
+	/* Configure line interface */
+	if (lineconfig & DAHDI_CONFIG_AMI) {
+		line = "AMI";
+		fmr0 = 0xa0;
+	} else {
+		line = "HDB3";
+		fmr0 = 0xf0;
+	}
+	if (lineconfig & DAHDI_CONFIG_CCS) {
+		framing = "CCS";
+	} else {
+		framing = "CAS";
+		cas = 0x40;
+	}
+	t1_setreg(wc, 0x1c, fmr0);
+
+	t1_setreg(wc, 0x37, 0xf0 /*| 0x6 */ );	/* LIM1: Clear data in case of LOS, Set receiver threshold (0.5V), No remote loop, no DRS */
+	t1_setreg(wc, 0x36, 0x08);	/* LIM0: Enable auto long haul mode, no local loop (must be after LIM1) */
+
+	t1_setreg(wc, 0x02, 0x50);	/* CMDR: Reset the receiver and transmitter line interface */
+	t1_setreg(wc, 0x02, 0x00);	/* CMDR: Reset the receiver and transmitter line interface */
+
+	/* Condition receive line interface for E1 after reset */
+	t1_setreg(wc, 0xbb, 0x17);
+	t1_setreg(wc, 0xbc, 0x55);
+	t1_setreg(wc, 0xbb, 0x97);
+	t1_setreg(wc, 0xbb, 0x11);
+	t1_setreg(wc, 0xbc, 0xaa);
+	t1_setreg(wc, 0xbb, 0x91);
+	t1_setreg(wc, 0xbb, 0x12);
+	t1_setreg(wc, 0xbc, 0x55);
+	t1_setreg(wc, 0xbb, 0x92);
+	t1_setreg(wc, 0xbb, 0x0c);
+	t1_setreg(wc, 0xbb, 0x00);
+	t1_setreg(wc, 0xbb, 0x8c);
+	
+	t1_setreg(wc, 0x3a, 0x20);	/* LIM2: 50% peak amplitude is a "1" */
+	t1_setreg(wc, 0x38, 0x0a);	/* PCD: LOS after 176 consecutive "zeros" */
+	t1_setreg(wc, 0x39, 0x15);	/* PCR: 22 "ones" clear LOS */
+	
+	t1_setreg(wc, 0x20, 0x9f);	/* XSW: Spare bits all to 1 */
+	t1_setreg(wc, 0x21, 0x1c|cas);	/* XSP: E-bit set when async. AXS
+					   auto, XSIF to 1 */
+	
+	
+	/* Generate pulse mask for E1 */
+	t1_setreg(wc, 0x26, 0x54);	/* XPM0 */
+	t1_setreg(wc, 0x27, 0x02);	/* XPM1 */
+	t1_setreg(wc, 0x28, 0x00);	/* XPM2 */
+
+	t1_info(wc, "Span configured for %s/%s%s\n", framing, line, crc4);
+}
+
+static void t1xxp_framer_start(struct t1 *wc)
+{
+	if (dahdi_is_e1_span(&wc->span)) {
+		t1_configure_e1(wc, wc->span.lineconfig);
+	} else { /* is a T1 card */
+		t1_configure_t1(wc, wc->span.lineconfig, wc->span.txlevel);
+		__t1xxp_set_clear(wc);
+	}
+
+	set_bit(DAHDI_FLAGBIT_RUNNING, &wc->span.flags);
+}
+
+static void set_span_devicetype(struct t1 *wc)
+{
+	const char *olddevicetype;
+	olddevicetype = wc->ddev->devicetype;
+
+#if defined(VPM_SUPPORT)
+	if (wc->vpmadt032) {
+		wc->ddev->devicetype = kasprintf(GFP_KERNEL,
+						 "%s (VPMADT032)", wc->variety);
+	} else if (wc->vpmoct) {
+		wc->ddev->devicetype = kasprintf(GFP_KERNEL,
+						 "%s (VPMOCT032)", wc->variety);
+	} else {
+		wc->ddev->devicetype = kasprintf(GFP_KERNEL, "%s", wc->variety);
+	}
+#else
+	wc->ddev->devicetype = kasprintf(GFP_KERNEL, "%s", wc->variety);
+#endif
+
+	/* On the off chance that we were able to allocate it previously. */
+	if (!wc->ddev->devicetype)
+		wc->ddev->devicetype = olddevicetype;
+	else
+		kfree(olddevicetype);
+}
+
+static int t1xxp_startup(struct file *file, struct dahdi_span *span)
+{
+	struct t1 *wc = container_of(span, struct t1, span);
+#ifndef CONFIG_VOICEBUS_ECREFERENCE
+	unsigned int i;
+#endif
+
+	set_span_devicetype(wc);
+
+#ifndef CONFIG_VOICEBUS_ECREFERENCE
+	/* initialize the start value for the entire chunk of last ec buffer */
+	for (i = 0; i < span->channels; i++) {
+		memset(wc->ec_chunk1[i], DAHDI_LIN2X(0, span->chans[i]), DAHDI_CHUNKSIZE);
+		memset(wc->ec_chunk2[i], DAHDI_LIN2X(0, span->chans[i]), DAHDI_CHUNKSIZE);
+	}
+#endif
+
+	/* Reset framer with proper parameters and start */
+	t1xxp_framer_start(wc);
+	debug_printk(wc, 1, "Calling startup (flags is %lu)\n", span->flags);
+
+	return 0;
+}
+
+static inline bool is_initialized(struct t1 *wc)
+{
+	WARN_ON(wc->not_ready < 0);
+	return (wc->not_ready == 0);
+}
+
+/**
+ * t1_wait_for_ready
+ *
+ * Check if the board has finished any setup and is ready to start processing
+ * calls.
+ */
+static int t1_wait_for_ready(struct t1 *wc)
+{
+	while (!is_initialized(wc)) {
+		if (fatal_signal_pending(current))
+			return -EIO;
+		msleep_interruptible(250);
+	}
+	return 0;
+}
+
+static int t1xxp_chanconfig(struct file *file,
+			    struct dahdi_chan *chan, int sigtype)
+{
+	struct t1 *wc = chan->pvt;
+
+	if (file->f_flags & O_NONBLOCK && !is_initialized(wc)) {
+			return -EAGAIN;
+	} else {
+		t1_wait_for_ready(wc);
+	}
+
+	if (test_bit(DAHDI_FLAGBIT_RUNNING, &chan->span->flags) &&
+	    dahdi_is_t1_span(&wc->span)) {
+		__t1xxp_set_clear(wc);
+	}
+	return 0;
+}
+
+static int t1xxp_rbsbits(struct dahdi_chan *chan, int bits)
+{
+	u_char m,c;
+	int n,b;
+	struct t1 *wc = chan->pvt;
+	unsigned long flags;
+	
+	debug_printk(wc, 2, "Setting bits to %d on channel %s\n",
+		     bits, chan->name);
+	if (dahdi_is_e1_span(&wc->span)) { /* do it E1 way */
+		if (chan->chanpos == 16)
+			return 0;
+
+		n = chan->chanpos - 1;
+		if (chan->chanpos > 15) n--;
+		b = (n % 15);
+		spin_lock_irqsave(&wc->reglock, flags);	
+		c = wc->txsigs[b];
+		m = (n / 15) << 2; /* nibble selector */
+		c &= (0xf << m); /* keep the other nibble */
+		c |= (bits & 0xf) << (4 - m); /* put our new nibble here */
+		wc->txsigs[b] = c;
+		spin_unlock_irqrestore(&wc->reglock, flags);
+		  /* output them to the chip */
+		t1_setreg(wc, 0x71 + b, c);
+	} else if (wc->span.lineconfig & DAHDI_CONFIG_D4) {
+		n = chan->chanpos - 1;
+		b = (n / 4);
+		spin_lock_irqsave(&wc->reglock, flags);	
+		c = wc->txsigs[b];
+		m = ((3 - (n % 4)) << 1); /* nibble selector */
+		c &= ~(0x3 << m); /* keep the other nibble */
+		c |= ((bits >> 2) & 0x3) << m; /* put our new nibble here */
+		wc->txsigs[b] = c;
+		spin_unlock_irqrestore(&wc->reglock, flags);
+		/* output them to the chip */
+		t1_setreg(wc, 0x70 + b, c);
+		t1_setreg(wc, 0x70 + b + 6, c);
+	} else if (wc->span.lineconfig & DAHDI_CONFIG_ESF) {
+		n = chan->chanpos - 1;
+		b = (n / 2);
+		spin_lock_irqsave(&wc->reglock, flags);	
+		c = wc->txsigs[b];
+		m = ((n % 2) << 2); /* nibble selector */
+		c &= (0xf << m); /* keep the other nibble */
+		c |= (bits & 0xf) << (4 - m); /* put our new nibble here */
+		wc->txsigs[b] = c;
+		spin_unlock_irqrestore(&wc->reglock, flags);
+		  /* output them to the chip */
+		t1_setreg(wc, 0x70 + b, c);
+	} 
+	debug_printk(wc, 2, "Finished setting RBS bits\n");
+
+	return 0;
+}
+
+static void t1_check_sigbits(struct t1 *wc)
+{
+	struct command_container {
+		struct command *cmd;
+		struct list_head node;
+		unsigned int index;
+	};
+	struct command_container *cont;
+	LIST_HEAD(commands);
+	int a,i,rxs;
+
+	if (!(test_bit(DAHDI_FLAGBIT_RUNNING, &wc->span.flags)))
+		return;
+
+	if (dahdi_is_e1_span(&wc->span)) {
+		/* Send out all the commands first. */
+		for (i = 0; i < 15; i++) {
+			if (!(wc->span.chans[i+16]->sig & DAHDI_SIG_CLEAR) ||
+			    !(wc->span.chans[i]->sig & DAHDI_SIG_CLEAR))  {
+				cont = kzalloc(sizeof(*cont), GFP_KERNEL);
+				if (!cont) {
+					WARN_ON_ONCE(1);
+					goto done;
+				}
+				cont->cmd = get_free_cmd(wc);
+				if (!cont->cmd) {
+					WARN_ON_ONCE(1);
+					goto done;
+				}
+				cont->index = i;
+				list_add_tail(&cont->node, &commands);
+				__t1_getreg(wc, 0x71 + i, cont->cmd);
+			}
+		}
+
+		/* Now check the results */
+		list_for_each_entry_reverse(cont, &commands, node) {
+			i = cont->index;
+			a = __t1_getresult(wc, cont->cmd);
+			free_cmd(wc, cont->cmd);
+			cont->cmd = NULL;
+			if (a > -1) {
+				/* Get high channel in low bits */
+				rxs = (a & 0xf);
+				if (!(wc->span.chans[i+16]->sig & DAHDI_SIG_CLEAR)) {
+					if (wc->span.chans[i+16]->rxsig != rxs) {
+						dahdi_rbsbits(wc->span.chans[i+16], rxs);
+					}
+				}
+				rxs = (a >> 4) & 0xf;
+				if (!(wc->span.chans[i]->sig & DAHDI_SIG_CLEAR)) {
+					if (wc->span.chans[i]->rxsig != rxs) {
+						dahdi_rbsbits(wc->span.chans[i], rxs);
+					}
+				}
+			}
+		}
+	} else if (wc->span.lineconfig & DAHDI_CONFIG_D4) {
+		/* First we'll send out the commands */
+		for (i = 0; i < 24; i += 4) {
+			cont = kzalloc(sizeof(*cont), GFP_KERNEL);
+			if (!cont) {
+				WARN_ON_ONCE(1);
+				goto done;
+			}
+			cont->cmd = get_free_cmd(wc);
+			if (!cont->cmd) {
+				WARN_ON_ONCE(1);
+				goto done;
+			}
+			cont->index = i;
+			list_add_tail(&cont->node, &commands);
+			__t1_getreg(wc, 0x70 + (i>>2), cont->cmd);
+		}
+
+		/* Now we'll check the results */
+		list_for_each_entry_reverse(cont, &commands, node) {
+			i = cont->index;
+			a = __t1_getresult(wc, cont->cmd);
+			free_cmd(wc, cont->cmd);
+			cont->cmd = NULL;
+			if (a > -1) {
+				/* Get high channel in low bits */
+				rxs = (a & 0x3) << 2;
+				if (!(wc->span.chans[i+3]->sig & DAHDI_SIG_CLEAR)) {
+					if (wc->span.chans[i+3]->rxsig != rxs) {
+						dahdi_rbsbits(wc->span.chans[i+3], rxs);
+					}
+				}
+				rxs = (a & 0xc);
+				if (!(wc->span.chans[i+2]->sig & DAHDI_SIG_CLEAR)) {
+					if (wc->span.chans[i+2]->rxsig != rxs) {
+						dahdi_rbsbits(wc->span.chans[i+2], rxs);
+					}
+				}
+				rxs = (a >> 2) & 0xc;
+				if (!(wc->span.chans[i+1]->sig & DAHDI_SIG_CLEAR)) {
+					if (wc->span.chans[i+1]->rxsig != rxs) {
+						dahdi_rbsbits(wc->span.chans[i+1], rxs);
+					}
+				}
+				rxs = (a >> 4) & 0xc;
+				if (!(wc->span.chans[i]->sig & DAHDI_SIG_CLEAR)) {
+					if (wc->span.chans[i]->rxsig != rxs) {
+						dahdi_rbsbits(wc->span.chans[i], rxs);
+					}	
+				}
+			}
+		}
+	} else {
+		/* First send out the commands. */
+		for (i = 0; i < 24; i += 2) {
+			cont = kzalloc(sizeof(*cont), GFP_KERNEL);
+			if (!cont) {
+				WARN_ON_ONCE(1);
+				goto done;
+			}
+			cont->cmd = get_free_cmd(wc);
+			if (!cont->cmd) {
+				WARN_ON_ONCE(1);
+				goto done;
+			}
+			cont->index = i;
+			list_add_tail(&cont->node, &commands);
+			__t1_getreg(wc, 0x70 + (i>>1), cont->cmd);
+		}
+
+		list_for_each_entry_reverse(cont, &commands, node) {
+			i = cont->index;
+			a = __t1_getresult(wc, cont->cmd);
+			free_cmd(wc, cont->cmd);
+			cont->cmd = NULL;
+			if (a > -1) {
+				/* Get high channel in low bits */
+				rxs = (a & 0xf);
+				if (!(wc->span.chans[i+1]->sig & DAHDI_SIG_CLEAR)) {
+					if (wc->span.chans[i+1]->rxsig != rxs) {
+						dahdi_rbsbits(wc->span.chans[i+1], rxs);
+					}
+				}
+				rxs = (a >> 4) & 0xf;
+				if (!(wc->span.chans[i]->sig & DAHDI_SIG_CLEAR)) {
+					if (wc->span.chans[i]->rxsig != rxs) {
+						dahdi_rbsbits(wc->span.chans[i], rxs);
+					}
+				}
+			}
+		}
+	}
+done:
+	while (!list_empty(&commands)) {
+		cont = container_of(commands.next,
+				    struct command_container, node);
+		if (unlikely(cont->cmd)) {
+			/* We do not care about the result, let's just wait for
+			 * the rest of the system to finish with it. */
+			__t1_getresult(wc, cont->cmd);
+			free_cmd(wc, cont->cmd);
+			cont->cmd = NULL;
+		}
+		list_del(&cont->node);
+		kfree(cont);
+	}
+	return;
+}
+
+struct maint_work_struct {
+	struct work_struct work;
+	struct t1 *wc;
+	int cmd;
+	struct dahdi_span *span;
+};
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20)
+static void t1xxp_maint_work(void *data)
+{
+	struct maint_work_struct *w = data;
+#else
+static void t1xxp_maint_work(struct work_struct *work)
+{
+	struct maint_work_struct *w = container_of(work,
+					struct maint_work_struct, work);
+#endif
+
+	struct t1 *wc = w->wc;
+	struct dahdi_span *span = w->span;
+	int reg = 0;
+	int cmd = w->cmd;
+
+	if (dahdi_is_e1_span(&wc->span)) {
+		switch (cmd) {
+		case DAHDI_MAINT_NONE:
+			t1_info(wc, "Clearing all maint modes\n");
+			t1xxp_clear_maint(span);
+			break;
+		case DAHDI_MAINT_LOCALLOOP:
+			t1xxp_clear_maint(span);
+			reg = t1_getreg(wc, LIM0);
+			if (reg < 0)
+				goto cleanup;
+			t1_setreg(wc, LIM0, reg | LIM0_LL);
+			break;
+		case DAHDI_MAINT_REMOTELOOP:
+		case DAHDI_MAINT_LOOPUP:
+		case DAHDI_MAINT_LOOPDOWN:
+			t1_info(wc, "Only local loop supported in E1 mode\n");
+			goto cleanup;
+		default:
+			t1_info(wc, "Unknown E1 maint command: %d\n", cmd);
+			goto cleanup;
+		}
+	} else {
+		switch (cmd) {
+		case DAHDI_MAINT_NONE:
+			t1xxp_clear_maint(span);
+			break;
+		case DAHDI_MAINT_LOCALLOOP:
+			t1xxp_clear_maint(span);
+ 			reg = t1_getreg(wc, LIM0);
+			if (reg < 0)
+				goto cleanup;
+			t1_setreg(wc, LIM0, reg | LIM0_LL);
+			break;
+ 		case DAHDI_MAINT_NETWORKLINELOOP:
+			t1xxp_clear_maint(span);
+ 			reg = t1_getreg(wc, LIM1);
+			if (reg < 0)
+				goto cleanup;
+			t1_setreg(wc, LIM1, reg | LIM1_RL);
+ 			break;
+ 		case DAHDI_MAINT_NETWORKPAYLOADLOOP:
+			t1xxp_clear_maint(span);
+ 			reg = t1_getreg(wc, LIM1);
+			if (reg < 0)
+				goto cleanup;
+			t1_setreg(wc, LIM1, reg | (LIM1_RL | LIM1_JATT));
+			break;
+		case DAHDI_MAINT_LOOPUP:
+			t1xxp_clear_maint(span);
+			t1_setreg(wc, 0x21, 0x50);
+			break;
+		case DAHDI_MAINT_LOOPDOWN:
+			t1xxp_clear_maint(span);
+			t1_setreg(wc, 0x21, 0x60);
+			break;
+		default:
+			t1_info(wc, "Unknown T1 maint command: %d\n", cmd);
+			return;
+		}
+	}
+
+cleanup:
+	kfree(w);
+	return;
+}
+
+static int t1xxp_maint(struct dahdi_span *span, int cmd)
+{
+	struct maint_work_struct *work;
+	struct t1 *wc = container_of(span, struct t1, span);
+
+	if (dahdi_is_e1_span(&wc->span)) {
+		switch (cmd) {
+		case DAHDI_MAINT_NONE:
+		case DAHDI_MAINT_LOCALLOOP:
+			break;
+		case DAHDI_MAINT_REMOTELOOP:
+		case DAHDI_MAINT_LOOPUP:
+		case DAHDI_MAINT_LOOPDOWN:
+			t1_info(wc, "Only local loop supported in E1 mode\n");
+			return -ENOSYS;
+		default:
+			t1_info(wc, "Unknown E1 maint command: %d\n", cmd);
+			return -ENOSYS;
+		}
+	} else {
+		switch (cmd) {
+		case DAHDI_MAINT_NONE:
+		case DAHDI_MAINT_LOCALLOOP:
+		case DAHDI_MAINT_NETWORKLINELOOP:
+		case DAHDI_MAINT_NETWORKPAYLOADLOOP:
+		case DAHDI_MAINT_LOOPUP:
+		case DAHDI_MAINT_LOOPDOWN:
+			break;
+		default:
+			t1_info(wc, "Unknown T1 maint command: %d\n", cmd);
+			return -ENOSYS;
+		}
+	}
+
+	work = kmalloc(sizeof(*work), GFP_ATOMIC);
+	if (!work) {
+		t1_info(wc, "Failed to allocate memory for workqueue\n");
+		return -ENOMEM;
+	}
+
+	work->span = span;
+	work->wc = wc;
+	work->cmd = cmd;
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20)
+	INIT_WORK(&work->work, t1xxp_maint_work, work);
+#else
+	INIT_WORK(&work->work, t1xxp_maint_work);
+#endif
+	queue_work(wc->wq, &work->work);
+	return 0;
+}
+
+static int t1xxp_clear_maint(struct dahdi_span *span)
+{
+	struct t1 *wc = container_of(span, struct t1, span);
+	int reg = 0;
+
+	/* Turn off local loop */
+	reg = t1_getreg(wc, LIM0);
+	if (reg < 0)
+		return -EIO;
+	t1_setreg(wc, LIM0, reg & ~LIM0_LL);
+
+	/* Turn off remote loop & jitter attenuator */
+	reg = t1_getreg(wc, LIM1);
+	if (reg < 0)
+		return -EIO;
+	t1_setreg(wc, LIM1, reg & ~(LIM1_RL | LIM1_JATT));
+
+	/* Clear loopup/loopdown signals on the line */
+	t1_setreg(wc, 0x21, 0x40);
+	return 0;
+}
+
+
+static int t1xxp_ioctl(struct dahdi_chan *chan, unsigned int cmd, unsigned long data)
+{
+	struct t4_regs regs;
+	unsigned int x;
+	struct t1 *wc;
+
+	switch (cmd) {
+	case WCT4_GET_REGS:
+		wc = chan->pvt;
+		for (x = 0; x < sizeof(regs.regs) / sizeof(regs.regs[0]); x++)
+			regs.regs[x] = t1_getreg(wc, x);
+
+		if (copy_to_user((void __user *) data, &regs, sizeof(regs)))
+			return -EFAULT;
+		break;
+	default:
+		return -ENOTTY;
+	}
+	return 0;
+}
+
+static const char *t1xxp_echocan_name(const struct dahdi_chan *chan)
+{
+	struct t1 *wc = chan->pvt;
+	if (wc->vpmadt032)
+		return vpmadt032_name;
+	else if (wc->vpmoct)
+		return vpmoct_name;
+	return NULL;
+}
+
+static int t1xxp_echocan_create(struct dahdi_chan *chan,
+				struct dahdi_echocanparams *ecp,
+				struct dahdi_echocanparam *p,
+				struct dahdi_echocan_state **ec)
+{
+	struct t1 *wc = chan->pvt;
+	enum adt_companding comp;
+
+	if (!vpmsupport || !test_bit(VPM150M_ACTIVE, &wc->ctlreg))
+		return -ENODEV;
+
+	if (wc->vpmadt032) {
+		*ec = wc->ec[chan->chanpos - 1];
+		(*ec)->ops = &vpm150m_ec_ops;
+		(*ec)->features = vpm150m_ec_features;
+
+		comp = (DAHDI_LAW_ALAW == chan->span->deflaw) ?
+				ADT_COMP_ALAW : ADT_COMP_ULAW;
+
+		return vpmadt032_echocan_create(wc->vpmadt032, chan->chanpos-1,
+						comp, ecp, p);
+	} else if (wc->vpmoct) {
+		/* Hookup legacy callbacks */
+		*ec = wc->ec[chan->chanpos - 1];
+		(*ec)->ops = &vpm150m_ec_ops;
+		(*ec)->features = vpm150m_ec_features;
+
+		return vpmoct_echocan_create(wc->vpmoct, chan->chanpos-1,
+				chan->span->deflaw);
+	} else {
+		return -ENODEV;
+	}
+}
+
+static void echocan_free(struct dahdi_chan *chan, struct dahdi_echocan_state *ec)
+{
+	struct t1 *wc = chan->pvt;
+	if (wc->vpmadt032)
+		vpmadt032_echocan_free(wc->vpmadt032, chan->chanpos - 1, ec);
+	else if (wc->vpmoct)
+		vpmoct_echocan_free(wc->vpmoct, chan->chanpos - 1);
+}
+
+static void
+setchanconfig_from_state(struct vpmadt032 *vpm, int channel,
+			 GpakChannelConfig_t *chanconfig)
+{
+	GpakEcanParms_t *p;
+
+	BUG_ON(!vpm);
+
+	chanconfig->PcmInPortA = 3;
+	chanconfig->PcmInSlotA = (channel + 1) * 2;
+	chanconfig->PcmOutPortA = SerialPortNull;
+	chanconfig->PcmOutSlotA = (channel + 1) * 2;
+	chanconfig->PcmInPortB = 2;
+	chanconfig->PcmInSlotB = (channel + 1) * 2;
+	chanconfig->PcmOutPortB = 3;
+	chanconfig->PcmOutSlotB = (channel + 1) * 2;
+	chanconfig->ToneTypesA = Null_tone;
+	chanconfig->MuteToneA = Disabled;
+	chanconfig->FaxCngDetA = Disabled;
+	chanconfig->ToneTypesB = Null_tone;
+	chanconfig->EcanEnableA = Enabled;
+	chanconfig->EcanEnableB = Disabled;
+	chanconfig->MuteToneB = Disabled;
+	chanconfig->FaxCngDetB = Disabled;
+
+	chanconfig->SoftwareCompand = cmpNone;
+
+	chanconfig->FrameRate = rate10ms;
+
+	p = &chanconfig->EcanParametersA;
+
+	vpmadt032_get_default_parameters(p);
+
+	p->EcanNlpType = vpm->curecstate[channel].nlp_type;
+	p->EcanNlpThreshold = vpm->curecstate[channel].nlp_threshold;
+	p->EcanNlpMaxSuppress = vpm->curecstate[channel].nlp_max_suppress;
+
+	memcpy(&chanconfig->EcanParametersB,
+		&chanconfig->EcanParametersA,
+		sizeof(chanconfig->EcanParametersB));
+}
+
+#ifdef VPM_SUPPORT
+
+struct vpm_load_work {
+	struct work_struct work;
+	struct t1 *wc;
+};
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20)
+static void vpm_load_func(void *data)
+{
+	struct maint_work_struct *w = data;
+#else
+static void vpm_load_func(struct work_struct *work)
+{
+	struct vpm_load_work *w = container_of(work,
+					struct vpm_load_work, work);
+#endif
+	struct t1 *wc = w->wc;
+	int res;
+
+	res = vpmadt032_init(wc->vpmadt032);
+	if (res) {
+		/* There was some problem during initialization, but it passed
+		 * the address test, let's try again in a bit. */
+		wc->vpm_check = jiffies + HZ/2;
+		return;
+	}
+
+	if (config_vpmadt032(wc->vpmadt032, wc)) {
+		clear_bit(VPM150M_ACTIVE, &wc->ctlreg);
+		wc->vpm_check = jiffies + HZ/2;
+		return;
+	}
+
+	/* turn on vpm (RX audio from vpm module) */
+	set_bit(VPM150M_ACTIVE, &wc->ctlreg);
+	wc->vpm_check = jiffies + HZ*5;
+	if (vpmtsisupport) {
+		debug_printk(wc, 1, "enabling VPM TSI pin\n");
+		/* turn on vpm timeslot interchange pin */
+		set_bit(0, &wc->ctlreg);
+	}
+
+	wc->not_ready--;
+	kfree(w);
+}
+
+static int vpm_start_load(struct t1 *wc)
+{
+	struct vpm_load_work *work;
+
+	work = kzalloc(sizeof(*work), GFP_KERNEL);
+	if (!work)
+		return -ENOMEM;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20)
+	INIT_WORK(&work->work, vpm_load_func, work);
+#else
+	INIT_WORK(&work->work, vpm_load_func);
+#endif
+	work->wc = wc;
+
+	queue_work(wc->wq, &work->work);
+	wc->not_ready++;
+	return 0;
+}
+
+static void t1_vpm_load_complete(struct device *dev, bool operational)
+{
+	unsigned long flags;
+	struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
+	struct t1 *wc = pci_get_drvdata(pdev);
+	struct vpmoct *vpm = NULL;
+
+	if (!wc || is_initialized(wc)) {
+		WARN_ON(!wc);
+		return;
+	}
+
+	spin_lock_irqsave(&wc->reglock, flags);
+	wc->not_ready--;
+	if (operational) {
+		set_bit(VPM150M_ACTIVE, &wc->ctlreg);
+	} else {
+		clear_bit(VPM150M_ACTIVE, &wc->ctlreg);
+		vpm = wc->vpmoct;
+		wc->vpmoct = NULL;
+	}
+	spin_unlock_irqrestore(&wc->reglock, flags);
+
+	if (vpm)
+		vpmoct_free(vpm);
+}
+
+static void check_and_load_vpm(struct t1 *wc)
+{
+	unsigned long flags;
+	struct vpmadt032_options options;
+	struct vpmadt032 *vpmadt = NULL;
+
+	if (!vpmsupport) {
+		t1_info(wc, "VPM Support Disabled via module parameter\n");
+		return;
+	}
+
+	memset(&options, 0, sizeof(options));
+	options.debug = debug;
+	options.vpmnlptype = vpmnlptype;
+	options.vpmnlpthresh = vpmnlpthresh;
+	options.vpmnlpmaxsupp = vpmnlpmaxsupp;
+	options.channels = dahdi_is_t1_span(&wc->span) ? 24 : 32;
+
+	/* We do not want to check that the VPM is alive until after we're
+	 * done setting it up here, an hour should cover it... */
+	wc->vpm_check = jiffies + HZ*3600;
+
+	/* If there was one already allocated, let's free it. */
+	if (wc->vpmadt032) {
+		vpmadt = wc->vpmadt032;
+		clear_bit(VPM150M_ACTIVE, &vpmadt->control);
+		flush_workqueue(vpmadt->wq);
+		spin_lock_irqsave(&wc->reglock, flags);
+		wc->vpmadt032 = NULL;
+		spin_unlock_irqrestore(&wc->reglock, flags);
+		vpmadt032_free(vpmadt);
+	}
+
+	vpmadt = vpmadt032_alloc(&options);
+	if (!vpmadt)
+		return;
+
+	vpmadt->setchanconfig_from_state = setchanconfig_from_state;
+
+	spin_lock_irqsave(&wc->reglock, flags);
+	wc->vpmadt032 = vpmadt;
+	spin_unlock_irqrestore(&wc->reglock, flags);
+
+	/* Probe for and attempt to load a vpmadt032 module */
+	if (vpmadt032_test(vpmadt, &wc->vb) || vpm_start_load(wc)) {
+		/* There does not appear to be a VPMADT032 installed. */
+		clear_bit(VPM150M_ACTIVE, &wc->ctlreg);
+		spin_lock_irqsave(&wc->reglock, flags);
+		wc->vpmadt032 = NULL;
+		spin_unlock_irqrestore(&wc->reglock, flags);
+		vpmadt032_free(vpmadt);
+	}
+
+	/* Probe for and attempt to load a vpmoct032 module */
+	if (NULL == wc->vpmadt032) {
+		struct vpmoct *vpmoct;
+
+		/* Check for vpmoct */
+		vpmoct = vpmoct_alloc();
+		if (!vpmoct)
+			return;
+
+		vpmoct->dev = &wc->vb.pdev->dev;
+
+		spin_lock_irqsave(&wc->reglock, flags);
+		wc->vpmoct = vpmoct;
+		wc->not_ready++;
+		spin_unlock_irqrestore(&wc->reglock, flags);
+
+		vpmoct_init(vpmoct, t1_vpm_load_complete);
+	}
+
+	set_span_devicetype(wc);
+}
+#else
+static inline void check_and_load_vpm(const struct t1 *wc)
+{
+	return;
+}
+#endif
+
+static void t1_chan_set_sigcap(struct dahdi_span *span, int x)
+{
+	struct t1 *wc = container_of(span, struct t1, span);
+	struct dahdi_chan *chan = wc->chans[x];
+	chan->sigcap = DAHDI_SIG_CLEAR;
+	/* E&M variant supported depends on span type */
+	if (dahdi_is_e1_span(&wc->span)) {
+		/* E1 sigcap setup */
+		if (span->lineconfig & DAHDI_CONFIG_CCS) {
+			/* CCS setup */
+			chan->sigcap |= DAHDI_SIG_MTP2 | DAHDI_SIG_SF;
+			return;
+		}
+		/* clear out sig and sigcap for channel 16 on E1 CAS
+		 * lines, otherwise, set it correctly */
+		if (x == 15) {
+			/* CAS signaling channel setup */
+			wc->chans[15]->sigcap = 0;
+			wc->chans[15]->sig = 0;
+			return;
+		}
+		/* normal CAS setup */
+		chan->sigcap |= DAHDI_SIG_EM_E1 | DAHDI_SIG_FXSLS |
+			DAHDI_SIG_FXSGS | DAHDI_SIG_FXSKS | DAHDI_SIG_SF |
+			DAHDI_SIG_FXOLS | DAHDI_SIG_FXOGS | DAHDI_SIG_FXOKS |
+			DAHDI_SIG_CAS | DAHDI_SIG_DACS_RBS;
+	} else {
+		/* T1 sigcap setup */
+		chan->sigcap |= DAHDI_SIG_EM | DAHDI_SIG_FXSLS |
+			DAHDI_SIG_FXSGS | DAHDI_SIG_FXSKS | DAHDI_SIG_MTP2 |
+			DAHDI_SIG_SF | DAHDI_SIG_FXOLS | DAHDI_SIG_FXOGS |
+			DAHDI_SIG_FXOKS | DAHDI_SIG_CAS | DAHDI_SIG_DACS_RBS;
+	}
+}
+
+static int
+t1xxp_spanconfig(struct file *file, struct dahdi_span *span,
+		 struct dahdi_lineconfig *lc)
+{
+	struct t1 *wc = container_of(span, struct t1, span);
+	int i;
+
+	if (file->f_flags & O_NONBLOCK) {
+		if (!is_initialized(wc))
+			return -EAGAIN;
+	} else {
+		t1_wait_for_ready(wc);
+	}
+
+	/* Do we want to SYNC on receive or not */
+	if (lc->sync) {
+		set_bit(7, &wc->ctlreg);
+		span->syncsrc = span->spanno;
+	} else {
+		clear_bit(7, &wc->ctlreg);
+		span->syncsrc = 0;
+	}
+
+	/* make sure that sigcaps gets updated if necessary */
+	for (i = 0; i < wc->span.channels; i++)
+		t1_chan_set_sigcap(span, i);
+
+	/* If already running, apply changes immediately */
+	if (test_bit(DAHDI_FLAGBIT_RUNNING, &span->flags))
+		return t1xxp_startup(file, span);
+
+	return 0;
+}
+
+static int t1xxp_enable_hw_preechocan(struct dahdi_chan *chan)
+{
+	struct t1 *wc = chan->pvt;
+
+	if (!wc->vpmoct)
+		return 0;
+
+	return vpmoct_preecho_enable(wc->vpmoct, chan->chanpos - 1);
+}
+
+static void t1xxp_disable_hw_preechocan(struct dahdi_chan *chan)
+{
+	struct t1 *wc = chan->pvt;
+
+	if (!wc->vpmoct)
+		return;
+
+	vpmoct_preecho_disable(wc->vpmoct, chan->chanpos - 1);
+}
+
+/**
+ * t1_software_init - Initialize the board for the given type.
+ * @wc:		The board to initialize.
+ * @type:	The type of board we are, T1 / E1
+ *
+ * This function is called at startup and when the type of the span is changed
+ * via the dahdi_device before the span is assigned a number.
+ *
+ */
+static int t1_software_init(struct t1 *wc, enum linemode type)
+{
+	int x;
+	struct dahdi_chan *chans[32] = {NULL,};
+	struct dahdi_echocan_state *ec[32] = {NULL,};
+	unsigned long flags;
+	int res = 0;
+
+	/* We may already be setup properly. */
+	if (wc->span.channels == ((E1 == type) ? 31 : 24))
+		return 0;
+
+	for (x = 0; x < ((E1 == type) ? 31 : 24); x++) {
+		chans[x] = kzalloc(sizeof(*chans[x]), GFP_KERNEL);
+		ec[x] = kzalloc(sizeof(*ec[x]), GFP_KERNEL);
+		if (!chans[x] || !ec[x])
+			goto error_exit;
+	}
+
+	set_span_devicetype(wc);
+
+	/* Because the interrupt handler is running, we need to atomically
+	 * swap the channel arrays. */
+	spin_lock_irqsave(&wc->reglock, flags);
+	_t1_free_channels(wc);
+	memcpy(wc->chans, chans, sizeof(wc->chans));
+	memcpy(wc->ec, ec, sizeof(wc->ec));
+	memset(chans, 0, sizeof(chans));
+	memset(ec, 0, sizeof(ec));
+
+	switch (type) {
+	case E1:
+		wc->span.channels = 31;
+		wc->span.spantype = SPANTYPE_DIGITAL_E1;
+		wc->span.linecompat = DAHDI_CONFIG_AMI | DAHDI_CONFIG_HDB3 |
+			DAHDI_CONFIG_CCS | DAHDI_CONFIG_CRC4;
+		wc->span.deflaw = DAHDI_LAW_ALAW;
+		break;
+	case T1:
+		wc->span.channels = 24;
+		wc->span.spantype = SPANTYPE_DIGITAL_T1;
+		wc->span.linecompat = DAHDI_CONFIG_AMI | DAHDI_CONFIG_B8ZS |
+			DAHDI_CONFIG_D4 | DAHDI_CONFIG_ESF;
+		wc->span.deflaw = DAHDI_LAW_MULAW;
+		break;
+	case J1:
+		wc->span.channels = 24;
+		wc->span.spantype = SPANTYPE_DIGITAL_J1;
+		wc->span.linecompat = DAHDI_CONFIG_AMI | DAHDI_CONFIG_B8ZS |
+			DAHDI_CONFIG_D4 | DAHDI_CONFIG_ESF;
+		wc->span.deflaw = DAHDI_LAW_MULAW;
+		break;
+	default:
+		spin_unlock_irqrestore(&wc->reglock, flags);
+		res = -EINVAL;
+		goto error_exit;
+	}
+
+	spin_unlock_irqrestore(&wc->reglock, flags);
+
+	if (!wc->ddev->location)
+		return -ENOMEM;
+
+	t1_info(wc, "Setting up global serial parameters for %s\n",
+		dahdi_spantype2str(wc->span.spantype));
+
+	t4_serial_setup(wc);
+	set_bit(DAHDI_FLAGBIT_RBS, &wc->span.flags);
+	for (x = 0; x < wc->span.channels; x++) {
+		snprintf(wc->chans[x]->name, sizeof(wc->chans[x]->name),
+			 "%s/%d", wc->span.name, x + 1);
+		t1_chan_set_sigcap(&wc->span, x);
+		wc->chans[x]->pvt = wc;
+		wc->chans[x]->chanpos = x + 1;
+	}
+
+	check_and_load_vpm(wc);
+	set_span_devicetype(wc);
+
+	return 0;
+
+error_exit:
+	for (x = 0; x < ARRAY_SIZE(chans); ++x) {
+		kfree(chans[x]);
+		kfree(ec[x]);
+	}
+	return res;
+}
+
+/**
+ * t1xx_set_linemode - Change the type of span before assignment.
+ * @span:		The span to change.
+ * @linemode:		Text string for the line mode.
+ *
+ * This function may be called after the dahdi_device is registered but
+ * before the spans are assigned numbers (and are visible to the rest of
+ * DAHDI).
+ *
+ */
+static int t1xxp_set_linemode(struct dahdi_span *span, enum spantypes linemode)
+{
+	int res;
+	struct t1 *wc = container_of(span, struct t1, span);
+
+	/* We may already be set to the requested type. */
+	if (span->spantype == linemode)
+		return 0;
+
+	res = t1_wait_for_ready(wc);
+	if (res)
+		return res;
+
+	/* Stop the processing of the channels since we're going to change
+	 * them. */
+	clear_bit(INITIALIZED, &wc->bit_flags);
+	synchronize_irq(wc->vb.pdev->irq);
+	smp_mb__after_atomic();
+	del_timer_sync(&wc->timer);
+	flush_workqueue(wc->wq);
+
+	t1_reset_registers(wc);
+
+	switch (linemode) {
+	case SPANTYPE_DIGITAL_T1:
+		dev_info(&wc->vb.pdev->dev,
+			 "Changing from %s to T1 line mode.\n",
+			 dahdi_spantype2str(wc->span.spantype));
+		res = t1_software_init(wc, T1);
+		break;
+	case SPANTYPE_DIGITAL_E1:
+		dev_info(&wc->vb.pdev->dev,
+			 "Changing from %s to E1 line mode.\n",
+			 dahdi_spantype2str(wc->span.spantype));
+		res = t1_software_init(wc, E1);
+		break;
+	case SPANTYPE_DIGITAL_J1:
+		dev_info(&wc->vb.pdev->dev,
+			 "Changing from %s to E1 line mode.\n",
+			 dahdi_spantype2str(wc->span.spantype));
+		res = t1_software_init(wc, J1);
+	default:
+		dev_err(&wc->vb.pdev->dev,
+			"Got invalid linemode '%s' from dahdi\n",
+			dahdi_spantype2str(linemode));
+		res = -EINVAL;
+	}
+
+	/* Since we probably reallocated the channels we need to make
+	 * sure they are configured before setting INITIALIZED again. */
+	if (!res) {
+		dahdi_init_span(span);
+		set_bit(INITIALIZED, &wc->bit_flags);
+		mod_timer(&wc->timer, jiffies + HZ/5);
+	}
+	return res;
+}
+
+#if 0
+
+#ifdef VPM_SUPPORT
+static inline unsigned char t1_vpm_in(struct t1 *wc, int unit, const unsigned int addr) 
+{
+		return t1_getreg_full(wc, addr, unit);
+}
+
+static inline unsigned char t1_vpm_out(struct t1 *wc, int unit, const unsigned int addr, const unsigned char val) 
+{
+		return t1_setreg(wc, addr, val, unit);
+}
+
+#endif
+#endif
+
+static int t1_hardware_post_init(struct t1 *wc, enum linemode *type)
+{
+	int res;
+	int reg;
+	int x;
+
+	/* T1 or E1 */
+	if ((-1 != t1e1override) || (-1 != j1mode)) {
+		*type = (t1e1override) ? E1 : (j1mode) ? J1 : T1;
+	} else {
+		if (!strcasecmp(default_linemode, "e1")) {
+			*type = E1;
+		} else if (!strcasecmp(default_linemode, "t1")) {
+			*type = T1;
+		} else if (!strcasecmp(default_linemode, "j1")) {
+			*type = J1;
+		} else {
+			u8 pins;
+			res = t1_getpins(wc, &pins);
+			if (res)
+				return res;
+			*type = (pins & 0x01) ? T1 : E1;
+		}
+	}
+	debug_printk(wc, 1, "linemode: %s\n", (*type == T1) ? "T1" :
+					(J1 == *type) ? "J1" : "E1");
+	
+	/* what version of the FALC are we using? */
+	reg = t1_setreg(wc, 0x4a, 0xaa);
+	reg = t1_getreg(wc, 0x4a);
+	if (reg < 0) {
+		t1_info(wc, "Failed to read FALC version (%d)\n", reg);
+		return -EIO;
+	}
+	debug_printk(wc, 1, "FALC version: %08x\n", reg);
+
+	/* make sure reads and writes work */
+	for (x = 0; x < 256; x++) {
+		t1_setreg(wc, 0x14, x);
+		reg = t1_getreg(wc, 0x14);
+		if (reg < 0) {
+			t1_info(wc, "Failed register read (%d)\n", reg);
+			return -EIO;
+		}
+		if (reg != x) {
+			t1_info(wc, "Register test failed. "
+				"Wrote '%x' but read '%x'\n", x, reg);
+			return -EIO;
+		}
+	}
+
+	t1_setleds(wc, wc->ledstate);
+
+	return 0;
+}
+
+static void t1_check_alarms(struct t1 *wc)
+{
+	unsigned char c,d;
+	int alarms;
+	int x,j;
+	unsigned char fmr4; /* must read this always */
+	struct command *cmds[3];
+
+	if (!(test_bit(DAHDI_FLAGBIT_RUNNING, &wc->span.flags)))
+		return;
+
+	for (x = 0; x < ARRAY_SIZE(cmds); ++x) {
+		cmds[x] = get_free_cmd(wc);
+		if (!cmds[x]) {
+			WARN_ON(1);
+			for (x = 0; x < ARRAY_SIZE(cmds); ++x)
+				free_cmd(wc, cmds[x]);
+			return;
+		}
+	}
+
+	/* Since this is voicebus, if we issue all the reads initially and then
+	 * check the results we can save ourselves some time. Otherwise, each
+	 * read will take a minimum of 3ms to go through the complete pipeline.
+	 */
+	__t1_getreg(wc, 0x4c, cmds[0]);
+	__t1_getreg(wc, 0x20, cmds[1]); /* must read this even if not used */
+	__t1_getreg(wc, 0x4d, cmds[2]);
+
+	d = __t1_getresult(wc, cmds[2]);
+	fmr4 = __t1_getresult(wc, cmds[1]);
+	c = __t1_getresult(wc, cmds[0]);
+
+	for (x=0; x < ARRAY_SIZE(cmds); ++x)
+		free_cmd(wc, cmds[x]);
+
+	/* Assume no alarms */
+	alarms = 0;
+
+	/* And consider only carrier alarms */
+	wc->span.alarms &= (DAHDI_ALARM_RED | DAHDI_ALARM_BLUE | DAHDI_ALARM_NOTOPEN);
+
+	if (dahdi_is_e1_span(&wc->span)) {
+		if (c & 0x04) {
+			/* No multiframe found, force RAI high after 400ms only if
+			   we haven't found a multiframe since last loss
+			   of frame */
+			if (!wc->flags.nmf) {
+				t1_setreg(wc, 0x20, 0x9f | 0x20);	/* LIM0: Force RAI High */
+				wc->flags.nmf = 1;
+				t1_info(wc, "NMF workaround on!\n");
+			}
+			t1_setreg(wc, 0x1e, 0xc3);	/* Reset to CRC4 mode */
+			t1_setreg(wc, 0x1c, 0xf2);	/* Force Resync */
+			t1_setreg(wc, 0x1c, 0xf0);	/* Force Resync */
+		} else if (!(c & 0x02)) {
+			if (wc->flags.nmf) {
+				t1_setreg(wc, 0x20, 0x9f);	/* LIM0: Clear forced RAI */
+				wc->flags.nmf = 0;
+				t1_info(wc, "NMF workaround off!\n");
+			}
+		}
+	} else {
+		/* Detect loopup code if we're not sending one */
+		if ((!wc->span.mainttimer) && (d & 0x08)) {
+			/* Loop-up code detected */
+			if ((++wc->loopupcnt > 80) &&
+			    (wc->span.maintstat != DAHDI_MAINT_REMOTELOOP)) {
+				t1_notice(wc, "Loopup detected,"\
+					" enabling remote loop\n");
+				t1_setreg(wc, 0x36, 0x08);	/* LIM0: Disable any local loop */
+				t1_setreg(wc, 0x37, 0xf6);	/* LIM1: Enable remote loop */
+				wc->span.maintstat = DAHDI_MAINT_REMOTELOOP;
+			}
+		} else {
+			wc->loopupcnt = 0;
+		}
+
+		/* Same for loopdown code */
+		if ((!wc->span.mainttimer) && (d & 0x10)) {
+			/* Loop-down code detected */
+			if ((++wc->loopdowncnt > 80) &&
+			    (wc->span.maintstat == DAHDI_MAINT_REMOTELOOP)) {
+				t1_notice(wc, "Loopdown detected,"\
+					" disabling remote loop\n");
+				t1_setreg(wc, 0x36, 0x08);	/* LIM0: Disable any local loop */
+				t1_setreg(wc, 0x37, 0xf0);	/* LIM1: Disable remote loop */
+				wc->span.maintstat = DAHDI_MAINT_NONE;
+			}
+		} else {
+			wc->loopdowncnt = 0;
+		}
+	}
+
+	if (wc->span.lineconfig & DAHDI_CONFIG_NOTOPEN) {
+		for (x=0,j=0;x < wc->span.channels;x++)
+			if ((wc->span.chans[x]->flags & DAHDI_FLAG_OPEN) ||
+			    dahdi_have_netdev(wc->span.chans[x]))
+				j++;
+		if (!j)
+			alarms |= DAHDI_ALARM_NOTOPEN;
+	}
+
+	if (c & 0x20) { /* LOF/LFA */
+		if (wc->alarmcount >= (alarmdebounce/100))
+			alarms |= DAHDI_ALARM_RED;
+		else {
+			if (unlikely(debug && !wc->alarmcount)) {
+				/* starting to debounce LOF/LFA */
+				t1_info(wc, "LOF/LFA detected but "
+					"debouncing for %d ms\n",
+					alarmdebounce);
+			}
+			wc->alarmcount++;
+		}
+	} else
+		wc->alarmcount = 0;
+
+	if (c & 0x80) { /* LOS */
+		if (wc->losalarmcount >= (losalarmdebounce/100))
+			alarms |= DAHDI_ALARM_RED;
+		else {
+			if (unlikely(debug && !wc->losalarmcount)) {
+				/* starting to debounce LOS */
+				t1_info(wc, "LOS detected but debouncing "
+					"for %d ms\n", losalarmdebounce);
+			}
+			wc->losalarmcount++;
+		}
+	} else
+		wc->losalarmcount = 0;
+
+	if (c & 0x40) { /* AIS */
+		if (wc->aisalarmcount >= (aisalarmdebounce/100))
+			alarms |= DAHDI_ALARM_BLUE;
+		else {
+			if (unlikely(debug && !wc->aisalarmcount)) {
+				/* starting to debounce AIS */
+				t1_info(wc, "AIS detected but debouncing "
+					"for %d ms\n", aisalarmdebounce);
+			}
+			wc->aisalarmcount++;
+		}
+	} else
+		wc->aisalarmcount = 0;
+
+	/* Keep track of recovering */
+	if ((!alarms) && wc->span.alarms) 
+		wc->alarmtimer = jiffies + 5*HZ;
+	if (wc->alarmtimer)
+		alarms |= DAHDI_ALARM_RECOVER;
+
+	/* If receiving alarms, go into Yellow alarm state */
+	if (alarms && !wc->flags.sendingyellow) {
+		t1_info(wc, "Setting yellow alarm\n");
+
+		/* We manually do yellow alarm to handle RECOVER and NOTOPEN, otherwise it's auto anyway */
+		t1_setreg(wc, 0x20, fmr4 | 0x20);
+		wc->flags.sendingyellow = 1;
+	} else if (!alarms && wc->flags.sendingyellow) {
+		t1_info(wc, "Clearing yellow alarm\n");
+		/* We manually do yellow alarm to handle RECOVER  */
+		t1_setreg(wc, 0x20, fmr4 & ~0x20);
+		wc->flags.sendingyellow = 0;
+	}
+	/*
+	if ((c & 0x10))
+		alarms |= DAHDI_ALARM_YELLOW;
+	*/
+
+	if (c & 0x10) { /* receiving yellow (RAI) */
+		if (wc->yelalarmcount >= (yelalarmdebounce/100))
+			alarms |= DAHDI_ALARM_YELLOW;
+		else {
+			if (unlikely(debug && !wc->yelalarmcount)) {
+				/* starting to debounce AIS */
+				t1_info(wc, "yelllow (RAI) detected but "
+					"debouncing for %d ms\n",
+					yelalarmdebounce);
+			}
+			wc->yelalarmcount++;
+		}
+	} else
+		wc->yelalarmcount = 0;
+
+	if (wc->span.mainttimer || wc->span.maintstat) 
+		alarms |= DAHDI_ALARM_LOOPBACK;
+	wc->span.alarms = alarms;
+	dahdi_alarm_notify(&wc->span);
+}
+
+static void handle_leds(struct t1 *wc)
+{
+	unsigned char led;
+	unsigned long flags;
+
+	led = wc->ledstate;
+
+	if ((wc->span.alarms & (DAHDI_ALARM_RED | DAHDI_ALARM_BLUE))
+		|| wc->losalarmcount) {
+		/* When we're in red alarm, blink the led once a second. */
+		if (time_after(jiffies, wc->blinktimer)) {
+			led = (led & __LED_GREEN) ? SET_LED_RED(led) : UNSET_LED_REDGREEN(led);
+		}
+	} else if (wc->span.alarms & DAHDI_ALARM_YELLOW) {
+		led = (led & __LED_RED) ? SET_LED_GREEN(led) : SET_LED_RED(led);
+	} else {
+		if (wc->span.maintstat != DAHDI_MAINT_NONE)
+			led = SET_LED_ORANGE(led);
+		else
+			led = UNSET_LED_ORANGE(led);
+
+		if (test_bit(DAHDI_FLAGBIT_RUNNING, &wc->span.flags))
+			led = SET_LED_GREEN(led);
+		else
+			led = UNSET_LED_REDGREEN(led);
+	}
+
+	if (led != wc->ledstate) {
+		struct command *cmd;
+		cmd = get_free_cmd(wc);
+		if (cmd) {
+			wc->blinktimer = jiffies + HZ/2;
+			cmd->flags |= __CMD_LEDS;
+			cmd->address = ~led & 0x0E;
+			submit_cmd(wc, cmd);
+			spin_lock_irqsave(&wc->reglock, flags);
+			wc->ledstate = led;
+			spin_unlock_irqrestore(&wc->reglock, flags);
+		}
+	}
+}
+
+
+static void t1_do_counters(struct t1 *wc)
+{
+	if (wc->alarmtimer && time_after(jiffies, wc->alarmtimer)) {
+		wc->span.alarms &= ~(DAHDI_ALARM_RECOVER);
+		wc->alarmtimer = 0;
+		dahdi_alarm_notify(&wc->span);
+	}
+}
+
+static void insert_tdm_data(const struct t1 *wc, u8 *sframe)
+{
+	int i;
+	register u8 *chanchunk;
+	const int channels = wc->span.channels;
+
+	for (i = 0; i < channels; ++i) {
+		chanchunk = &wc->chans[i]->writechunk[0];
+		sframe[(i+1)*2 + (EFRAME_SIZE + EFRAME_GAP)*0] = chanchunk[0];
+		sframe[(i+1)*2 + (EFRAME_SIZE + EFRAME_GAP)*1] = chanchunk[1];
+		sframe[(i+1)*2 + (EFRAME_SIZE + EFRAME_GAP)*2] = chanchunk[2];
+		sframe[(i+1)*2 + (EFRAME_SIZE + EFRAME_GAP)*3] = chanchunk[3];
+		sframe[(i+1)*2 + (EFRAME_SIZE + EFRAME_GAP)*4] = chanchunk[4];
+		sframe[(i+1)*2 + (EFRAME_SIZE + EFRAME_GAP)*5] = chanchunk[5];
+		sframe[(i+1)*2 + (EFRAME_SIZE + EFRAME_GAP)*6] = chanchunk[6];
+		sframe[(i+1)*2 + (EFRAME_SIZE + EFRAME_GAP)*7] = chanchunk[7];
+	}
+}
+
+static inline void t1_transmitprep(struct t1 *wc, u8 *sframe)
+{
+	int x;
+	int y;
+	u8 *eframe = sframe;
+
+	/* Calculate Transmission */
+	if (likely(test_bit(INITIALIZED, &wc->bit_flags)))
+		_dahdi_transmit(&wc->span);
+
+#ifdef CONFIG_VOICEBUS_ECREFERENCE
+	for (chan = 0; chan < wc->span.channels; chan++) {
+		__dahdi_fifo_put(wc->ec_reference[chan],
+			    wc->chans[chan]->writechunk, DAHDI_CHUNKSIZE);
+	}
+#endif
+
+	if (likely(test_bit(INITIALIZED, &wc->bit_flags)))
+		insert_tdm_data(wc, sframe);
+
+	spin_lock(&wc->reglock);
+	for (x = 0; x < DAHDI_CHUNKSIZE; x++) {
+		/* process the command queue */
+		for (y = 0; y < 7; y++)
+			cmd_dequeue(wc, eframe, x, y);
+
+#ifdef VPM_SUPPORT
+		if (wc->vpmadt032) {
+			cmd_dequeue_vpmadt032(wc, eframe);
+		} else if (wc->vpmoct) {
+			cmd_dequeue_vpmoct(wc, eframe);
+		}
+#endif
+
+		if (x < DAHDI_CHUNKSIZE - 1) {
+			eframe[EFRAME_SIZE] = wc->ctlreg;
+			eframe[EFRAME_SIZE + 1] = wc->txident++;
+		}
+		eframe += (EFRAME_SIZE + EFRAME_GAP);
+	}
+	spin_unlock(&wc->reglock);
+}
+
+/**
+ * is_good_frame() - Whether the SFRAME received was one sent.
+ *
+ */
+static inline bool is_good_frame(const u8 *sframe)
+{
+        const u8 a = sframe[0*(EFRAME_SIZE+EFRAME_GAP) + (EFRAME_SIZE+1)];
+        const u8 b = sframe[1*(EFRAME_SIZE+EFRAME_GAP) + (EFRAME_SIZE+1)];
+        return a != b;
+}
+
+/**
+ * extract_tdm_data() - Move TDM data from sframe to channels.
+ *
+ */
+static void extract_tdm_data(struct t1 *wc, const u8 *const sframe)
+{
+	int i;
+	register u8 *chanchunk;
+	const int channels = wc->span.channels;
+
+	for (i = 0; i < channels; ++i) {
+		chanchunk = &wc->chans[i]->readchunk[0];
+		chanchunk[0] = sframe[(i+1)*2 + (EFRAME_SIZE + EFRAME_GAP)*0];
+		chanchunk[1] = sframe[(i+1)*2 + (EFRAME_SIZE + EFRAME_GAP)*1];
+		chanchunk[2] = sframe[(i+1)*2 + (EFRAME_SIZE + EFRAME_GAP)*2];
+		chanchunk[3] = sframe[(i+1)*2 + (EFRAME_SIZE + EFRAME_GAP)*3];
+		chanchunk[4] = sframe[(i+1)*2 + (EFRAME_SIZE + EFRAME_GAP)*4];
+		chanchunk[5] = sframe[(i+1)*2 + (EFRAME_SIZE + EFRAME_GAP)*5];
+		chanchunk[6] = sframe[(i+1)*2 + (EFRAME_SIZE + EFRAME_GAP)*6];
+		chanchunk[7] = sframe[(i+1)*2 + (EFRAME_SIZE + EFRAME_GAP)*7];
+	}
+
+	/* Pre-echo with the vpmoct overwrites the 24th timeslot with the
+	 * specified channel's pre-echo audio stream. This timeslot is unused
+	 * by the te12xp */
+	if (wc->vpmoct && wc->vpmoct->preecho_enabled) {
+		chanchunk = &wc->vpmoct->preecho_buf[0];
+		chanchunk[0] = sframe[23 + (EFRAME_SIZE + EFRAME_GAP)*0];
+		chanchunk[1] = sframe[23 + (EFRAME_SIZE + EFRAME_GAP)*1];
+		chanchunk[2] = sframe[23 + (EFRAME_SIZE + EFRAME_GAP)*2];
+		chanchunk[3] = sframe[23 + (EFRAME_SIZE + EFRAME_GAP)*3];
+		chanchunk[4] = sframe[23 + (EFRAME_SIZE + EFRAME_GAP)*4];
+		chanchunk[5] = sframe[23 + (EFRAME_SIZE + EFRAME_GAP)*5];
+		chanchunk[6] = sframe[23 + (EFRAME_SIZE + EFRAME_GAP)*6];
+		chanchunk[7] = sframe[23 + (EFRAME_SIZE + EFRAME_GAP)*7];
+	}
+}
+
+static inline void t1_receiveprep(struct t1 *wc, const u8* sframe)
+{
+	int x;
+	unsigned char expected;
+	const u8 *eframe = sframe;
+
+	if (!is_good_frame(sframe))
+		return;
+
+	if (likely(test_bit(INITIALIZED, &wc->bit_flags)))
+		extract_tdm_data(wc, sframe);
+
+	spin_lock(&wc->reglock);
+	for (x = 0; x < DAHDI_CHUNKSIZE; x++) {
+		if (x < DAHDI_CHUNKSIZE - 1) {
+			expected = wc->rxident+1;
+			wc->rxident = eframe[EFRAME_SIZE + 1];
+			wc->statreg = eframe[EFRAME_SIZE + 2];
+			if (wc->rxident != expected) {
+				wc->ddev->irqmisses++;
+				_resend_cmds(wc);
+				if (unlikely(debug)) {
+					t1_info(wc, "oops: rxident=%d "
+						"expected=%d x=%d\n",
+						wc->rxident, expected, x);
+				}
+			}
+		}
+		cmd_decipher(wc, eframe);
+#ifdef VPM_SUPPORT
+		if (wc->vpmadt032)
+			cmd_decipher_vpmadt032(wc, eframe);
+		else if (wc->vpmoct)
+			cmd_decipher_vpmoct(wc, eframe);
+#endif
+		eframe += (EFRAME_SIZE + EFRAME_GAP);
+	}
+
+	spin_unlock(&wc->reglock);
+	
+	/* echo cancel */
+	if (likely(test_bit(INITIALIZED, &wc->bit_flags))) {
+		for (x = 0; x < wc->span.channels; x++) {
+			struct dahdi_chan *const c = wc->chans[x];
+#ifdef CONFIG_VOICEBUS_ECREFERENCE
+			unsigned char buffer[DAHDI_CHUNKSIZE];
+			__dahdi_fifo_get(wc->ec_reference[x], buffer,
+				    ARRAY_SIZE(buffer));
+			_dahdi_ec_chunk(c, c->readchunk,
+				       buffer);
+#else
+			if ((wc->vpmoct) &&
+			   (c->chanpos-1 == wc->vpmoct->preecho_timeslot) &&
+			    (wc->vpmoct->preecho_enabled)) {
+				__dahdi_ec_chunk(c, c->readchunk,
+						 wc->vpmoct->preecho_buf,
+						 c->writechunk);
+			} else {
+				_dahdi_ec_chunk(c, c->readchunk,
+						wc->ec_chunk2[x]);
+				memcpy(wc->ec_chunk2[x], wc->ec_chunk1[x],
+					DAHDI_CHUNKSIZE);
+				memcpy(wc->ec_chunk1[x], c->writechunk,
+					DAHDI_CHUNKSIZE);
+			}
+		}
+#endif
+		_dahdi_receive(&wc->span);
+	}
+}
+
+static void t1_handle_transmit(struct voicebus *vb, struct list_head *buffers)
+{
+	struct t1 *wc = container_of(vb, struct t1, vb);
+	struct vbb *vbb;
+
+	list_for_each_entry(vbb, buffers, entry) {
+		memset(vbb->data, 0, sizeof(vbb->data));
+		atomic_inc(&wc->txints);
+		t1_transmitprep(wc, vbb->data);
+		handle_leds(wc);
+	}
+}
+
+static void t1_handle_receive(struct voicebus *vb, struct list_head *buffers)
+{
+	struct t1 *wc = container_of(vb, struct t1, vb);
+	struct vbb *vbb;
+	list_for_each_entry(vbb, buffers, entry)
+		t1_receiveprep(wc, vbb->data);
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20)
+static void timer_work_func(void *param)
+{
+	struct t1 *wc = param;
+#else
+static void timer_work_func(struct work_struct *work)
+{
+	struct t1 *wc = container_of(work, struct t1, timer_work);
+#endif
+	if (test_bit(INITIALIZED, &wc->bit_flags))
+		mod_timer(&wc->timer, jiffies + HZ/30);
+	t1_do_counters(wc);
+	t1_check_alarms(wc);
+	t1_check_sigbits(wc);
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20)
+static void vpm_check_func(void *data)
+{
+	struct t1 *wc = data;
+#else
+static void vpm_check_func(struct work_struct *work)
+{
+	struct t1 *wc = container_of(work, struct t1, vpm_check_work);
+#endif
+	int res;
+	u16 version;
+	const int MAX_CHECKS = 5;
+
+	/* If there is a failed VPM module, do not block dahdi_cfg
+	 * indefinitely. */
+	if (++wc->vpm_check_count > MAX_CHECKS) {
+		wc->not_ready--;
+		wc->vpm_check = MAX_JIFFY_OFFSET;
+		t1_info(wc, "Disabling VPMADT032 Checking.\n");
+		return;
+	}
+
+	if (!test_bit(INITIALIZED, &wc->bit_flags))
+		return;
+
+	if (test_bit(VPM150M_ACTIVE, &wc->ctlreg)) {
+		res = gpakPingDsp(wc->vpmadt032->dspid, &version);
+		if (!res) {
+			set_bit(VPM150M_ACTIVE, &wc->ctlreg);
+			wc->vpm_check = jiffies + HZ*5;
+			wc->vpm_check_count = 0;
+			return;
+		}
+
+		clear_bit(VPM150M_ACTIVE, &wc->ctlreg);
+		t1_info(wc, "VPMADT032 is non-responsive.  Resetting.\n");
+	}
+
+
+	if (!test_bit(INITIALIZED, &wc->bit_flags))
+		return;
+
+	res = vpmadt032_reset(wc->vpmadt032);
+	if (res) {
+		t1_info(wc, "Failed VPMADT032 reset. VPMADT032 is disabled.\n");
+		wc->vpm_check = jiffies + HZ*5;
+		return;
+	}
+
+	if (!test_bit(INITIALIZED, &wc->bit_flags))
+		return;
+
+	res = config_vpmadt032(wc->vpmadt032, wc);
+	if (res) {
+		/* We failed the configuration, let's try again. */
+		t1_info(wc, "Failed to configure the ports.  Retrying.\n");
+
+		if (!test_bit(INITIALIZED, &wc->bit_flags))
+			return;
+		queue_work(wc->vpmadt032->wq, &wc->vpm_check_work);
+		return;
+	}
+
+	if (!test_bit(INITIALIZED, &wc->bit_flags))
+		return;
+
+	/* Looks like the reset went ok so we can put the VPM module back in
+	 * the TDM path. */
+	set_bit(VPM150M_ACTIVE, &wc->ctlreg);
+	t1_info(wc, "VPMADT032 is reenabled.\n");
+	wc->vpm_check = jiffies + HZ*5;
+	wc->not_ready--;
+	return;
+}
+
+static void te12xp_timer(TIMER_DATA_TYPE timer)
+{
+	unsigned long flags;
+	struct t1 *wc = from_timer(wc, timer, timer);
+
+	if (unlikely(!test_bit(INITIALIZED, &wc->bit_flags)))
+		return;
+
+	queue_work(wc->wq, &wc->timer_work);
+
+	spin_lock_irqsave(&wc->reglock, flags);
+	if (!wc->vpmadt032)
+		goto unlock_exit;
+
+	if (time_after(wc->vpm_check, jiffies))
+		goto unlock_exit;
+
+	queue_work(wc->vpmadt032->wq, &wc->vpm_check_work);
+
+unlock_exit:
+	spin_unlock_irqrestore(&wc->reglock, flags);
+	return;
+}
+
+static void t1_handle_error(struct voicebus *vb)
+{
+	unsigned long flags;
+	struct t1 *wc = container_of(vb, struct t1, vb);
+
+	spin_lock_irqsave(&wc->reglock, flags);
+	if (!wc->vpmadt032)
+		goto unlock_exit;
+	clear_bit(VPM150M_ACTIVE, &wc->ctlreg);
+	queue_work(wc->vpmadt032->wq, &wc->vpm_check_work);
+
+unlock_exit:
+	spin_unlock_irqrestore(&wc->reglock, flags);
+}
+
+static const struct voicebus_operations voicebus_operations = {
+	.handle_receive = t1_handle_receive,
+	.handle_transmit = t1_handle_transmit,
+	.handle_error = t1_handle_error,
+};
+
+#ifdef CONFIG_VOICEBUS_SYSFS
+static ssize_t voicebus_current_latency_show(struct device *dev,
+					     struct device_attribute *attr,
+					     char *buf)
+{
+	unsigned long flags;
+	struct t1 *wc = dev_get_drvdata(dev);
+	unsigned int current_latency;
+	spin_lock_irqsave(&wc->vb.lock, flags);
+	current_latency = wc->vb.min_tx_buffer_count;
+	spin_unlock_irqrestore(&wc->vb.lock, flags);
+	return sprintf(buf, "%d\n", current_latency);
+}
+
+static DEVICE_ATTR(voicebus_current_latency, 0400,
+		   voicebus_current_latency_show, NULL);
+
+
+static ssize_t vpm_firmware_version_show(struct device *dev,
+				struct device_attribute *attr,
+				char *buf)
+{
+	int res;
+	u16 version = 0;
+	struct t1 *wc = dev_get_drvdata(dev);
+
+	if (wc->vpmadt032) {
+		res = gpakPingDsp(wc->vpmadt032->dspid, &version);
+		if (res) {
+			t1_info(wc, "Failed gpakPingDsp %d\n", res);
+			version = -1;
+		}
+	}
+
+	return sprintf(buf, "%x.%02x\n", (version & 0xff00) >> 8, (version & 0xff));
+}
+
+static DEVICE_ATTR(vpm_firmware_version, 0400,
+		   vpm_firmware_version_show, NULL);
+
+static void create_sysfs_files(struct t1 *wc)
+{
+	int ret;
+	ret = device_create_file(&wc->vb.pdev->dev,
+				 &dev_attr_voicebus_current_latency);
+	if (ret) {
+		dev_info(&wc->vb.pdev->dev,
+			"Failed to create device attributes.\n");
+	}
+
+	ret = device_create_file(&wc->vb.pdev->dev,
+				 &dev_attr_vpm_firmware_version);
+	if (ret) {
+		dev_info(&wc->vb.pdev->dev,
+			"Failed to create device attributes.\n");
+	}
+}
+
+static void remove_sysfs_files(struct t1 *wc)
+{
+	device_remove_file(&wc->vb.pdev->dev,
+			   &dev_attr_vpm_firmware_version);
+
+	device_remove_file(&wc->vb.pdev->dev,
+			   &dev_attr_voicebus_current_latency);
+}
+
+#else
+
+static inline void create_sysfs_files(struct t1 *wc) { return; }
+static inline void remove_sysfs_files(struct t1 *wc) { return; }
+
+#endif /* CONFIG_VOICEBUS_SYSFS */
+
+static const struct dahdi_span_ops t1_span_ops = {
+	.owner = THIS_MODULE,
+	.spanconfig = t1xxp_spanconfig,
+	.chanconfig = t1xxp_chanconfig,
+	.startup = t1xxp_startup,
+	.rbsbits = t1xxp_rbsbits,
+	.maint = t1xxp_maint,
+	.ioctl = t1xxp_ioctl,
+	.set_spantype = t1xxp_set_linemode,
+#ifdef VPM_SUPPORT
+	.enable_hw_preechocan = t1xxp_enable_hw_preechocan,
+	.disable_hw_preechocan = t1xxp_disable_hw_preechocan,
+	.echocan_create = t1xxp_echocan_create,
+	.echocan_name = t1xxp_echocan_name,
+#endif
+};
+
+static int __devinit te12xp_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	struct t1 *wc;
+	const struct t1_desc *d = (struct t1_desc *) ent->driver_data;
+	unsigned int x;
+	int res;
+	unsigned int index = -1;
+	enum linemode type;
+
+	for (x = 0; x < ARRAY_SIZE(ifaces); x++) {
+		if (!ifaces[x]) {
+			index = x;
+			break;
+		}
+	}
+
+	if (-1 == index) {
+		printk(KERN_INFO "%s: Too many interfaces\n",
+		       THIS_MODULE->name);
+		return -EIO;
+	}
+	
+	wc = kzalloc(sizeof(*wc), GFP_KERNEL);
+	if (!wc)
+		return -ENOMEM;
+
+	/* Set the performance counters to -1 since this card currently does
+	 * not support collecting them. */
+	memset(&wc->span.count, -1, sizeof(wc->span.count));
+
+	ifaces[index] = wc;
+
+	sprintf(wc->span.name, "WCT1/%d", index);
+	snprintf(wc->span.desc, sizeof(wc->span.desc) - 1, "%s Card %d",
+		 d->name, index);
+	wc->not_ready = 1;
+	wc->ledstate = -1;
+	wc->variety = d->name;
+	wc->txident = 1;
+	spin_lock_init(&wc->reglock);
+	INIT_LIST_HEAD(&wc->active_cmds);
+	INIT_LIST_HEAD(&wc->pending_cmds);
+	timer_setup(&wc->timer, te12xp_timer, 0);
+
+#	if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20)
+	INIT_WORK(&wc->timer_work, timer_work_func, wc);
+#	else
+	INIT_WORK(&wc->timer_work, timer_work_func);
+#	endif
+
+#	if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20)
+	INIT_WORK(&wc->vpm_check_work, vpm_check_func, wc);
+#	else
+	INIT_WORK(&wc->vpm_check_work, vpm_check_func);
+#	endif
+
+	wc->ddev = dahdi_create_device();
+	if (!wc->ddev) {
+		ifaces[index] = NULL;
+		kfree(wc);
+		return -ENOMEM;
+	}
+	wc->ddev->manufacturer = "Digium";
+	wc->ddev->location = kasprintf(GFP_KERNEL, "PCI Bus %02d Slot %02d",
+				      pdev->bus->number,
+				      PCI_SLOT(pdev->devfn) + 1);
+	if (!wc->ddev->location) {
+		ifaces[index] = NULL;
+		kfree(wc);
+		return -ENOMEM;
+	}
+
+#ifdef CONFIG_VOICEBUS_ECREFERENCE
+	for (x = 0; x < ARRAY_SIZE(wc->ec_reference); ++x) {
+		/* 256 is used here since it is the largest power of two that
+		 * will contain 8 * VOICBUS_DEFAULT_LATENCY */
+		wc->ec_reference[x] = dahdi_fifo_alloc(256, GFP_KERNEL);
+
+		if (IS_ERR(wc->ec_reference[x])) {
+			res = PTR_ERR(wc->ec_reference[x]);
+			wc->ec_reference[x] = NULL;
+			free_wc(wc);
+			return res;
+		}
+
+	}
+#endif /* CONFIG_VOICEBUS_ECREFERENCE */
+
+#ifdef CONFIG_VOICEBUS_DISABLE_ASPM
+	if (is_pcie(wc)) {
+		pci_disable_link_state(pdev->bus->self, PCIE_LINK_STATE_L0S |
+			PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);
+	};
+#endif
+
+	snprintf(wc->name, sizeof(wc->name)-1, "wcte12xp%d", index);
+	pci_set_drvdata(pdev, wc);
+	wc->vb.ops = &voicebus_operations;
+	wc->vb.pdev = pdev;
+	wc->vb.debug = &debug;
+	res = voicebus_init(&wc->vb, wc->name);
+	if (res) {
+		free_wc(wc);
+		ifaces[index] = NULL;
+		return res;
+	}
+	
+	wc->wq = create_singlethread_workqueue(wc->name);
+	if (!wc->wq) {
+		kfree(wc);
+		ifaces[index] = NULL;
+		return -ENOMEM;
+	}
+
+	voicebus_set_minlatency(&wc->vb, latency);
+	voicebus_set_maxlatency(&wc->vb, max_latency);
+	max_latency = wc->vb.max_latency;
+
+	create_sysfs_files(wc);
+
+	voicebus_lock_latency(&wc->vb);
+	if (voicebus_start(&wc->vb)) {
+		voicebus_release(&wc->vb);
+		free_wc(wc);
+		ifaces[index] = NULL;
+		return -EIO;
+	}
+
+	res = t1_hardware_post_init(wc, &type);
+	if (res) {
+		voicebus_release(&wc->vb);
+		free_wc(wc);
+		ifaces[index] = NULL;
+		return res;
+	}
+
+	wc->span.chans = wc->chans;
+
+	res = t1_software_init(wc, type);
+	if (res) {
+		voicebus_release(&wc->vb);
+		free_wc(wc);
+		ifaces[index] = NULL;
+		return res;
+	}
+
+	wc->span.ops = &t1_span_ops;
+	list_add_tail(&wc->span.device_node, &wc->ddev->spans);
+	res = dahdi_register_device(wc->ddev, &wc->vb.pdev->dev);
+	if (res) {
+		t1_info(wc, "Unable to register with DAHDI\n");
+		return res;
+	}
+
+	set_bit(INITIALIZED, &wc->bit_flags);
+	mod_timer(&wc->timer, jiffies + HZ/5);
+
+	t1_info(wc, "Found a %s\n", wc->variety);
+	voicebus_unlock_latency(&wc->vb);
+
+	wc->not_ready--;
+	return 0;
+}
+
+static void __devexit te12xp_remove_one(struct pci_dev *pdev)
+{
+	struct t1 *wc = pci_get_drvdata(pdev);
+#ifdef VPM_SUPPORT
+	unsigned long flags;
+	struct vpmadt032 *vpmadt = wc->vpmadt032;
+	struct vpmoct	 *vpmoct = wc->vpmoct;
+#endif
+	if (!wc)
+		return;
+
+	dahdi_unregister_device(wc->ddev);
+
+	remove_sysfs_files(wc);
+
+	clear_bit(INITIALIZED, &wc->bit_flags);
+	smp_mb__after_atomic();
+
+	del_timer_sync(&wc->timer);
+	flush_workqueue(wc->wq);
+#ifdef VPM_SUPPORT
+	if (vpmadt) {
+		clear_bit(VPM150M_ACTIVE, &vpmadt->control);
+		flush_workqueue(vpmadt->wq);
+	} else if (vpmoct) {
+		while (t1_wait_for_ready(wc))
+			schedule();
+	}
+#endif
+	del_timer_sync(&wc->timer);
+
+	voicebus_release(&wc->vb);
+
+#ifdef VPM_SUPPORT
+	if (vpmadt) {
+		spin_lock_irqsave(&wc->reglock, flags);
+		wc->vpmadt032 = NULL;
+		spin_unlock_irqrestore(&wc->reglock, flags);
+		vpmadt032_free(vpmadt);
+	} else if (vpmoct) {
+		spin_lock_irqsave(&wc->reglock, flags);
+		wc->vpmoct = NULL;
+		spin_unlock_irqrestore(&wc->reglock, flags);
+		vpmoct_free(vpmoct);
+	}
+#endif
+
+	t1_info(wc, "Freed a Wildcard TE12xP.\n");
+	free_wc(wc);
+}
+
+static DEFINE_PCI_DEVICE_TABLE(te12xp_pci_tbl) = {
+	{ 0xd161, 0x0120, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (unsigned long) &te120p},
+	{ 0xd161, 0x8000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (unsigned long) &te121},
+	{ 0xd161, 0x8001, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (unsigned long) &te122},
+	{ 0 }
+};
+
+static void te12xp_shutdown(struct pci_dev *pdev)
+{
+	struct t1 *wc = pci_get_drvdata(pdev);
+	voicebus_quiesce(&wc->vb);
+}
+
+static int te12xp_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+	return -ENOSYS;
+}
+
+MODULE_DEVICE_TABLE(pci, te12xp_pci_tbl);
+
+static struct pci_driver te12xp_driver = {
+	.name = "wcte12xp",
+	.probe = te12xp_init_one,
+	.remove = __devexit_p(te12xp_remove_one),
+	.shutdown = te12xp_shutdown,
+	.suspend = te12xp_suspend,
+	.id_table = te12xp_pci_tbl,
+};
+
+static int __init te12xp_init(void)
+{
+	int res;
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 23)
+	cmd_cache = kmem_cache_create(THIS_MODULE->name, sizeof(struct command), 0,
+#if defined(CONFIG_SLUB) && (LINUX_VERSION_CODE == KERNEL_VERSION(2, 6, 22))
+				SLAB_HWCACHE_ALIGN | SLAB_STORE_USER, NULL, NULL);
+#else
+				SLAB_HWCACHE_ALIGN, NULL, NULL);
+#endif
+#else
+	cmd_cache = kmem_cache_create(THIS_MODULE->name, sizeof(struct command), 0,
+				SLAB_HWCACHE_ALIGN, NULL);
+#endif
+	if (!cmd_cache)
+		return -ENOMEM;
+
+	if ((-1 != t1e1override) || (-1 != j1mode)) {
+		pr_info("'t1e1override' and 'j1mode' are deprecated. "
+			"Please use 'default_linemode' instead.\n");
+		/* If someone is setting j1mode, then, t1e1override most likely
+		 * needs to be forced to t1 mode */
+		if (j1mode > 0)
+			t1e1override = 0;
+	} else if (strcasecmp(default_linemode, "auto") &&
+		   strcasecmp(default_linemode, "t1") &&
+		   strcasecmp(default_linemode, "j1") &&
+		   strcasecmp(default_linemode, "e1")) {
+		pr_err("'%s' is an unknown span type.\n", default_linemode);
+		default_linemode = "auto";
+		kmem_cache_destroy(cmd_cache);
+		return -EINVAL;
+	}
+	res = dahdi_pci_module(&te12xp_driver);
+	if (res) {
+		kmem_cache_destroy(cmd_cache);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+
+static void __exit te12xp_cleanup(void)
+{
+	pci_unregister_driver(&te12xp_driver);
+	kmem_cache_destroy(cmd_cache);
+}
+
+module_param(debug, int, S_IRUGO | S_IWUSR);
+module_param(t1e1override, int, S_IRUGO | S_IWUSR);
+module_param(default_linemode, charp, S_IRUGO);
+MODULE_PARM_DESC(default_linemode, "\"auto\"(default), \"e1\", or \"t1\". "
+		 "\"auto\" will use the value from the hardware jumpers.");
+module_param(j1mode, int, S_IRUGO | S_IWUSR);
+module_param(alarmdebounce, int, S_IRUGO | S_IWUSR);
+module_param(losalarmdebounce, int, S_IRUGO | S_IWUSR);
+module_param(aisalarmdebounce, int, S_IRUGO | S_IWUSR);
+module_param(yelalarmdebounce, int, S_IRUGO | S_IWUSR);
+module_param(latency, int, S_IRUGO);
+module_param(max_latency, int, S_IRUGO);
+#ifdef VPM_SUPPORT
+module_param(vpmsupport, int, S_IRUGO);
+module_param(vpmtsisupport, int, S_IRUGO);
+module_param(vpmnlptype, int, S_IRUGO);
+module_param(vpmnlpthresh, int, S_IRUGO);
+module_param(vpmnlpmaxsupp, int, S_IRUGO);
+#endif
+
+MODULE_DESCRIPTION("Wildcard VoiceBus Digital Card Driver");
+MODULE_AUTHOR("Digium Incorporated <support@digium.com>");
+MODULE_LICENSE("GPL v2");
+
+module_init(te12xp_init);
+module_exit(te12xp_cleanup);
diff --git a/drivers/dahdi/wcte12xp/wcte12xp.h b/drivers/dahdi/wcte12xp/wcte12xp.h
new file mode 100644
index 0000000..27ce597
--- /dev/null
+++ b/drivers/dahdi/wcte12xp/wcte12xp.h
@@ -0,0 +1,167 @@
+/*
+ * Digium, Inc.  Wildcard TE12xP T1/E1 card Driver
+ *
+ * Written by Michael Spiceland <mspiceland@digium.com>
+ *
+ * Adapted from the wctdm24xxp and wcte11xp drivers originally
+ * written by Mark Spencer <markster@digium.com>
+ *            Matthew Fredrickson <creslin@digium.com>
+ *            William Meadows <wmeadows@digium.com>
+ *
+ * Copyright (C) 2007-2010, Digium, Inc.
+ *
+ * All rights reserved.
+ *
+ */
+
+/*
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2 as published by the
+ * Free Software Foundation. See the LICENSE file included with
+ * this program for more details.
+ */
+
+#ifndef _WCTE12XP_H
+#define _WCTE12XP_H
+
+/* Comment to disable VPM support */
+#define VPM_SUPPORT 1
+
+#define WC_MAX_IFACES 8
+
+#ifdef VPM_SUPPORT
+#define MAX_TDM_CHAN 31
+#endif
+
+#define SDI_CLK		(0x00010000)
+#define SDI_DOUT	(0x00020000)
+#define SDI_DREAD	(0x00040000)
+#define SDI_DIN		(0x00080000)
+
+#define EFRAME_SIZE	108
+#define ERING_SIZE	16		/* Maximum ring size */
+#define EFRAME_GAP	20
+#define SFRAME_SIZE	((EFRAME_SIZE * DAHDI_CHUNKSIZE) + (EFRAME_GAP * (DAHDI_CHUNKSIZE - 1)))
+
+#define PCI_WINDOW_SIZE ((2 * 2 * 2 * SFRAME_SIZE) + (2 * ERING_SIZE * 4))
+
+#define MAX_COMMANDS 16
+
+#define NUM_EC 4
+
+#define __CMD_PINS (1 << 18)		/* CPLD pin read */
+#define __CMD_LEDS (1 << 19)		/* LED Operation */
+#define __CMD_RD   (1 << 20)		/* Read Operation */
+#define __CMD_WR   (1 << 21)		/* Write Operation */
+
+#define __LED_ORANGE	(1<<3)
+#define __LED_GREEN	(1<<2)
+#define __LED_RED	(1<<1)
+
+#define SET_LED_ORANGE(a) (a | __LED_ORANGE)
+#define SET_LED_RED(a) ((a | __LED_RED) & ~__LED_GREEN)
+#define SET_LED_GREEN(a) ((a | __LED_GREEN) & ~__LED_RED)
+
+#define UNSET_LED_ORANGE(a) (a & ~__LED_ORANGE)
+#define UNSET_LED_REDGREEN(a) (a | __LED_RED | __LED_GREEN)
+
+#define CMD_BYTE(slot, a, is_vpm) (slot*6)+(a*2)+is_vpm /* only even slots */
+//TODO: make a separate macro
+
+enum linemode {
+	T1 = 1,
+	E1,
+	J1,
+};
+
+struct command {
+	struct list_head node;
+	struct completion complete;
+	u8 data;
+	u8 ident;
+	u8 cs_slot;
+	u16 address;
+	u32 flags;
+};
+
+struct vpm150m;
+
+struct t1 {
+	spinlock_t reglock;
+	unsigned char txident;
+	unsigned char rxident;
+	unsigned char statreg; /* bit 0 = vpmadt032 int */
+	struct {
+		unsigned int nmf:1;
+		unsigned int sendingyellow:1;
+	} flags;
+	unsigned char txsigs[16];  /* Copy of tx sig registers */
+	int alarmcount;			/* How much red alarm we've seen */
+	int losalarmcount;
+	int aisalarmcount;
+	int yelalarmcount;
+	const char *variety;
+	char name[80];
+	unsigned long blinktimer;
+	int loopupcnt;
+	int loopdowncnt;
+#define INITIALIZED 1
+#define SHUTDOWN    2
+#define READY	    3
+#define IOERROR	    4
+	unsigned long bit_flags;
+	unsigned long alarmtimer;
+	unsigned char ledstate;
+	unsigned char vpm_check_count;
+	struct dahdi_device *ddev;
+	struct dahdi_span span;						/* Span */
+	struct dahdi_chan *chans[32];					/* Channels */
+	struct dahdi_echocan_state *ec[32];				/* Echocan state for channels */
+#ifdef CONFIG_VOICEBUS_ECREFERENCE
+	struct dahdi_fifo *ec_reference[32];
+#else
+	unsigned char ec_chunk1[32][DAHDI_CHUNKSIZE];
+	unsigned char ec_chunk2[32][DAHDI_CHUNKSIZE];
+#endif
+	unsigned long ctlreg;
+	struct voicebus vb;
+	atomic_t txints;
+	struct vpmadt032 *vpmadt032;
+	struct vpmoct *vpmoct;
+	unsigned long vpm_check;
+	struct work_struct vpm_check_work;
+
+	/* protected by t1.reglock */
+	struct list_head pending_cmds;
+	struct list_head active_cmds;
+	struct timer_list timer;
+	struct work_struct timer_work;
+	struct workqueue_struct *wq;
+	unsigned int not_ready;	/* 0 when entire card is ready to go */
+};
+
+#define t1_info(t1, format, arg...)         \
+	dev_info(&t1->vb.pdev->dev , format , ## arg)
+
+#define t1_notice(t1, format, arg...)         \
+	dev_notice(&t1->vb.pdev->dev , format , ## arg)
+
+/* Maintenance Mode Registers */
+#define LIM0		0x36
+#define LIM0_LL		(1<<1)
+#define LIM1		0x37
+#define LIM1_RL 	(1<<1)
+#define LIM1_JATT	(1<<2)
+
+/* Clear Channel Registers */
+#define CCB1		0x2f
+#define CCB2		0x30
+#define CCB3		0x31
+
+#endif
-- 
2.34.0

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File 0001-Revert-Remove-support-for-driver-wcte12xp.patch of Package dahdi-linux (Revision a2a5b44ba49c209fafda96d9e3ba2b71)

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