Move kernel stuff to under kernel/

(merged branch /zaptel/team/tzafrir/move )

Closes issue #7117.


git-svn-id: http://svn.digium.com/svn/zaptel/branches/1.4@3793 5390a7c7-147a-4af0-8ec9-7488f05a26cb

1 files changed, 1218 insertions, 0 deletions

diff --git a/kernel/xpp/card_fxo.c b/kernel/xpp/card_fxo.c
new file mode 100644
index 0000000..cbe953b
--- /dev/null
+++ b/kernel/xpp/card_fxo.c
@@ -0,0 +1,1218 @@
+/*
+ * Written by Oron Peled <oron@actcom.co.il>
+ * Copyright (C) 2004-2006, Xorcom
+ *
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/delay.h>
+#include "xpd.h"
+#include "xproto.h"
+#include "xpp_zap.h"
+#include "card_fxo.h"
+#include "zap_debug.h"
+#include "xbus-core.h"
+
+static const char rcsid[] = "$Id$";
+
+DEF_PARM(int, print_dbg, 0, 0644, "Print DBG statements");
+DEF_PARM(uint, poll_battery_interval, 500, 0644, "Poll battery interval in milliseconds (0 - disable)");
+DEF_PARM(uint, poll_power_denial_interval, 40, 0644, "Power denial detection poll interval in milliseconds (0 - disable)");
+#ifdef	WITH_METERING
+DEF_PARM(uint, poll_metering_interval, 500, 0644, "Poll metering interval in milliseconds (0 - disable)");
+#endif
+DEF_PARM(int, ring_debounce, 50, 0644, "Number of ticks to debounce a false RING indication");
+
+/* Signaling is opposite (fxs signalling for fxo card) */
+#if 1
+#define	FXO_DEFAULT_SIGCAP	(ZT_SIG_FXSKS | ZT_SIG_FXSLS)
+#else
+#define	FXO_DEFAULT_SIGCAP	(ZT_SIG_SF)
+#endif
+
+enum fxo_leds {
+	LED_GREEN,
+};
+
+#define	NUM_LEDS		1
+#define	DELAY_UNTIL_DIALTONE	3000
+
+#define	POLREV_THRESHOLD	1000	/* minimum duration for polarity reversal detection (in ticks) */
+#define	BAT_THRESHOLD		3
+#define	BAT_DEBOUNCE		1000	/* compensate for battery voltage fluctuation (in ticks) */
+
+/* Shortcuts */
+#define	DAA_WRITE	1
+#define	DAA_READ	0
+#define	DAA_DIRECT_REQUEST(xbus,xpd,chipsel,writing,reg,dL)	\
+	xpp_register_request((xbus), (xpd), (chipsel), (writing), 0, (reg), 0, (dL), 0)
+
+#define	VALID_CHIPSEL(x)	(((chipsel) >= 0 && (chipsel) <= 7) || (chipsel) == ALL_CHANS)
+
+/*---------------- FXO Protocol Commands ----------------------------------*/
+
+static /* 0x0F */ DECLARE_CMD(FXO, XPD_STATE, bool on);
+static /* 0x0F */ DECLARE_CMD(FXO, RING, lineno_t chan, bool on);
+static /* 0x0F */ DECLARE_CMD(FXO, RELAY_OUT, byte which, bool on);
+
+static bool fxo_packet_is_valid(xpacket_t *pack);
+static void fxo_packet_dump(const char *msg, xpacket_t *pack);
+static int proc_fxo_info_read(char *page, char **start, off_t off, int count, int *eof, void *data);
+#ifdef	WITH_METERING
+static int proc_xpd_metering_read(char *page, char **start, off_t off, int count, int *eof, void *data);
+#endif
+static int proc_xpd_register_read(char *page, char **start, off_t off, int count, int *eof, void *data);
+static int proc_xpd_register_write(struct file *file, const char __user *buffer, unsigned long count, void *data);
+static int handle_register_command(xpd_t *xpd, char *cmdline);
+
+#define	PROC_REGISTER_FNAME	"slics"
+#define	PROC_FXO_INFO_FNAME	"fxo_info"
+#ifdef	WITH_METERING
+#define	PROC_METERING_FNAME	"metering_read"
+#endif
+
+#define	DAA_REG_RING		0x05
+#define	DAA_REG_METERING	0x11	/* 17 */
+#define	DAA_REG_CURRENT		0x1C	/* 28 */
+#define	DAA_REG_VBAT		0x1D	/* 29 */
+
+#define	POWER_DENIAL_CURRENT	3
+#define	POWER_DENIAL_TIME	80	/* ticks */
+
+struct FXO_priv_data {
+	struct proc_dir_entry	*regfile;
+#ifdef	WITH_METERING
+	struct proc_dir_entry	*meteringfile;
+#endif
+	struct proc_dir_entry	*fxo_info;
+	uint			poll_counter;
+	signed char		battery_voltage[CHANNELS_PERXPD];
+	xpp_line_t		battery;
+	ushort			battery_debounce[CHANNELS_PERXPD];
+	xpp_line_t		polarity;
+	ushort			polarity_counter[CHANNELS_PERXPD];
+	ushort			current_counter[CHANNELS_PERXPD];
+	xpp_line_t		ledstate[NUM_LEDS];	/* 0 - OFF, 1 - ON */
+	xpp_line_t		ledcontrol[NUM_LEDS];	/* 0 - OFF, 1 - ON */
+	int			led_counter[NUM_LEDS][CHANNELS_PERXPD];
+	atomic_t		ring_debounce[CHANNELS_PERXPD];
+#ifdef	WITH_METERING
+	uint			metering_count[CHANNELS_PERXPD];
+	xpp_line_t		metering_tone_state;
+#endif
+};
+
+/*
+ * LED counter values:
+ *	n>1	: BLINK every n'th tick
+ */
+#define	LED_COUNTER(priv,pos,color)	((priv)->led_counter[color][pos])
+#define	IS_BLINKING(priv,pos,color)	(LED_COUNTER(priv,pos,color) > 0)
+#define	MARK_BLINK(priv,pos,color,t)	((priv)->led_counter[color][pos] = (t))
+#define	MARK_OFF(priv,pos,color)	do { BIT_CLR((priv)->ledcontrol[color],(pos)); MARK_BLINK((priv),(pos),(color),0); } while(0)
+#define	MARK_ON(priv,pos,color)		do { BIT_SET((priv)->ledcontrol[color],(pos)); MARK_BLINK((priv),(pos),(color),0); } while(0)
+
+#define	LED_BLINK_RING			(1000/8)	/* in ticks */
+
+/*---------------- FXO: Static functions ----------------------------------*/
+
+/*
+ * LED control is done via DAA register 0x20
+ */
+static int do_led(xpd_t *xpd, lineno_t chan, byte which, bool on)
+{
+	int			ret = 0;
+	struct FXO_priv_data	*priv;
+	xbus_t			*xbus;
+
+	BUG_ON(!xpd);
+	xbus = xpd->xbus;
+	priv = xpd->priv;
+	which = which % NUM_LEDS;
+	if(IS_SET(xpd->digital_outputs, chan) || IS_SET(xpd->digital_inputs, chan))
+		goto out;
+	if(chan == ALL_CHANS) {
+		priv->ledstate[which] = (on) ? ~0 : 0;
+	} else {
+		if(on) {
+			BIT_SET(priv->ledstate[which], chan);
+		} else {
+			BIT_CLR(priv->ledstate[which], chan);
+		}
+	}
+	LINE_DBG(LEDS, xpd, chan, "LED: which=%d -- %s\n", which, (on) ? "on" : "off");
+	ret = DAA_DIRECT_REQUEST(xbus, xpd, chan, DAA_WRITE, 0x20, on);
+out:
+	return ret;
+}
+
+static void handle_fxo_leds(xpd_t *xpd)
+{
+	int			i;
+	unsigned long		flags;
+	const enum fxo_leds	color = LED_GREEN;
+	unsigned int		timer_count;
+	struct FXO_priv_data	*priv;
+
+	BUG_ON(!xpd);
+	spin_lock_irqsave(&xpd->lock, flags);
+	priv = xpd->priv;
+	timer_count = xpd->timer_count;
+	for_each_line(xpd, i) {
+		if(IS_SET(xpd->digital_outputs, i) || IS_SET(xpd->digital_inputs, i))
+			continue;
+		if(xpd->blink_mode || IS_BLINKING(priv,i,color)) {
+			int	mod_value = LED_COUNTER(priv, i, color);
+
+			if(!mod_value)
+				mod_value = DEFAULT_LED_PERIOD;		/* safety value */
+			// led state is toggled
+			if((timer_count % mod_value) == 0) {
+				LINE_DBG(LEDS, xpd, i, "ledstate=%s\n", (IS_SET(priv->ledstate[color], i))?"ON":"OFF");
+				if(!IS_SET(priv->ledstate[color], i)) {
+					do_led(xpd, i, color, 1);
+				} else {
+					do_led(xpd, i, color, 0);
+				}
+			}
+		} else if(IS_SET(priv->ledcontrol[color], i) && !IS_SET(priv->ledstate[color], i)) {
+			do_led(xpd, i, color, 1);
+		} else if(!IS_SET(priv->ledcontrol[color], i) && IS_SET(priv->ledstate[color], i)) {
+			do_led(xpd, i, color, 0);
+		}
+	}
+	spin_unlock_irqrestore(&xpd->lock, flags);
+}
+
+static void update_zap_ring(xpd_t *xpd, int pos, bool on)
+{
+	zt_rxsig_t	rxsig;
+
+	BUG_ON(!xpd);
+	if(on) {
+		BIT_CLR(xpd->cid_on, pos);
+		rxsig = ZT_RXSIG_RING;
+	} else {
+		BIT_SET(xpd->cid_on, pos);
+		rxsig = ZT_RXSIG_OFFHOOK;
+	}
+	pcm_recompute(xpd, 0);
+	/*
+	 * We should not spinlock before calling zt_hooksig() as
+	 * it may call back into our xpp_hooksig() and cause
+	 * a nested spinlock scenario
+	 */
+	if(SPAN_REGISTERED(xpd))
+		zt_hooksig(&xpd->chans[pos], rxsig);
+}
+
+static void mark_ring(xpd_t *xpd, lineno_t pos, bool on, bool update_zap)
+{
+	struct FXO_priv_data	*priv;
+
+	priv = xpd->priv;
+	BUG_ON(!priv);
+	atomic_set(&priv->ring_debounce[pos], 0);	/* Stop debouncing */
+	/*
+	 * We don't want to check battery during ringing
+	 * due to voltage fluctuations.
+	 */
+	priv->battery_debounce[pos] = 0;
+	if(on && !xpd->ringing[pos]) {
+		LINE_DBG(SIGNAL, xpd, pos, "START\n");
+		xpd->ringing[pos] = 1;
+		MARK_BLINK(priv, pos, LED_GREEN, LED_BLINK_RING);
+		if(update_zap)
+			update_zap_ring(xpd, pos, on);
+	} else if(!on && xpd->ringing[pos]) {
+		LINE_DBG(SIGNAL, xpd, pos, "STOP\n");
+		xpd->ringing[pos] = 0;
+		if(IS_BLINKING(priv, pos, LED_GREEN))
+			MARK_BLINK(priv, pos, LED_GREEN, 0);
+		if(update_zap)
+			update_zap_ring(xpd, pos, on);
+	}
+}
+
+static int do_sethook(xpd_t *xpd, int pos, bool to_offhook)
+{
+	unsigned long		flags;
+	xbus_t			*xbus;
+	struct FXO_priv_data	*priv;
+	int			ret = 0;
+	byte			value;
+
+	BUG_ON(!xpd);
+	BUG_ON(xpd->direction == TO_PHONE);		// We can SETHOOK state only on PSTN
+	xbus = xpd->xbus;
+	priv = xpd->priv;
+	BUG_ON(!priv);
+	if(!IS_SET(priv->battery, pos)) {
+		LINE_DBG(SIGNAL, xpd, pos, "WARNING: called while battery is off\n");
+	}
+	spin_lock_irqsave(&xpd->lock, flags);
+	mark_ring(xpd, pos, 0, 0);				// No more rings
+	value = (to_offhook) ? 0x09 : 0x08;	/* Bit 3 is for CID */
+	LINE_DBG(SIGNAL, xpd, pos, "SETHOOK: value=0x%02X %s\n", value, (to_offhook)?"OFFHOOK":"ONHOOK");
+	if(to_offhook)
+		MARK_ON(priv, pos, LED_GREEN);
+	else
+		MARK_OFF(priv, pos, LED_GREEN);
+	ret = DAA_DIRECT_REQUEST(xbus, xpd, pos, DAA_WRITE, DAA_REG_RING, value);
+	if(to_offhook) {
+		BIT_SET(xpd->offhook, pos);
+	} else {
+		BIT_CLR(xpd->offhook, pos);
+		BIT_CLR(xpd->cid_on, pos);
+	}
+#ifdef	WITH_METERING
+	priv->metering_count[pos] = 0;
+	priv->metering_tone_state = 0L;
+	DAA_DIRECT_REQUEST(xbus, xpd, pos, DAA_WRITE, DAA_REG_METERING, 0x2D);
+#endif
+	spin_unlock_irqrestore(&xpd->lock, flags);
+	return ret;
+}
+
+/*---------------- FXO: Methods -------------------------------------------*/
+
+static xpd_t *FXO_card_new(xbus_t *xbus, int unit, int subunit, const xproto_table_t *proto_table, byte subtype, byte revision)
+{
+	xpd_t		*xpd = NULL;
+	int		channels;
+
+	if(subtype == 2)
+		channels = min(2, CHANNELS_PERXPD);
+	else
+		channels = min(8, CHANNELS_PERXPD);
+	xpd = xpd_alloc(sizeof(struct FXO_priv_data), proto_table, channels);
+	if(!xpd)
+		return NULL;
+	xpd->direction = TO_PSTN;
+	xpd->revision = revision;
+	xpd->type_name = proto_table->name;
+	return xpd;
+}
+
+static void clean_proc(xbus_t *xbus, xpd_t *xpd)
+{
+	struct FXO_priv_data	*priv;
+
+	BUG_ON(!xpd);
+	priv = xpd->priv;
+	XPD_DBG(PROC, xpd, "\n");
+#ifdef	CONFIG_PROC_FS
+	if(priv->regfile) {
+		XPD_DBG(PROC, xpd, "Removing xpd DAA file\n");
+		remove_proc_entry(PROC_REGISTER_FNAME, xpd->proc_xpd_dir);
+		priv->regfile->data = NULL;
+	}
+#ifdef	WITH_METERING
+	if(priv->meteringfile) {
+		XPD_DBG(PROC, xpd, "Removing xpd metering tone file\n");
+		priv->meteringfile->data = NULL;
+		remove_proc_entry(PROC_METERING_FNAME, xpd->proc_xpd_dir);
+		priv->meteringfile = NULL;
+	}
+#endif
+	if(priv->fxo_info) {
+		XPD_DBG(PROC, xpd, "Removing xpd FXO_INFO file\n");
+		remove_proc_entry(PROC_FXO_INFO_FNAME, xpd->proc_xpd_dir);
+		priv->fxo_info = NULL;
+	}
+#endif
+}
+
+static int FXO_card_init(xbus_t *xbus, xpd_t *xpd)
+{
+	struct FXO_priv_data	*priv;
+	int			ret = 0;
+	int			i;
+
+	BUG_ON(!xpd);
+	priv = xpd->priv;
+#ifdef	CONFIG_PROC_FS
+	XPD_DBG(PROC, xpd, "Creating FXO_INFO file\n");
+	priv->fxo_info = create_proc_read_entry(PROC_FXO_INFO_FNAME, 0444, xpd->proc_xpd_dir, proc_fxo_info_read, xpd);
+	if(!priv->fxo_info) {
+		XPD_ERR(xpd, "Failed to create proc file '%s'\n", PROC_FXO_INFO_FNAME);
+		ret = -ENOENT;
+		goto err;
+	}
+	priv->fxo_info->owner = THIS_MODULE;
+#ifdef	WITH_METERING
+	XPD_DBG(PROC, xpd, "Creating Metering tone file\n");
+	priv->meteringfile = create_proc_read_entry(PROC_METERING_FNAME, 0444, xpd->proc_xpd_dir,
+			proc_xpd_metering_read, xpd);
+	if(!priv->meteringfile) {
+		XPD_ERR(xpd, "Failed to create proc file '%s'\n", PROC_METERING_FNAME);
+		ret = -ENOENT;
+		goto err;
+	}
+	priv->meteringfile->owner = THIS_MODULE;
+#endif
+	XPD_DBG(PROC, xpd, "Creating DAAs file\n");
+	priv->regfile = create_proc_entry(PROC_REGISTER_FNAME, 0644, xpd->proc_xpd_dir);
+	if(!priv->regfile) {
+		XPD_ERR(xpd, "Failed to create proc file '%s'\n", PROC_REGISTER_FNAME);
+		ret = -ENOENT;
+		goto err;
+	}
+	priv->regfile->owner = THIS_MODULE;
+	priv->regfile->write_proc = proc_xpd_register_write;
+	priv->regfile->read_proc = proc_xpd_register_read;
+	priv->regfile->data = xpd;
+#endif
+	ret = run_initialize_registers(xpd);
+	if(ret < 0)
+		goto err;
+	// Hanghup all lines
+	for_each_line(xpd, i) {
+		do_sethook(xpd, i, 0);
+	}
+	XPD_DBG(GENERAL, xpd, "done\n");
+	for_each_line(xpd, i) {
+		do_led(xpd, i, LED_GREEN, 0);
+	}
+	for_each_line(xpd, i) {
+		do_led(xpd, i, LED_GREEN, 1);
+		msleep(50);
+	}
+	for_each_line(xpd, i) {
+		do_led(xpd, i, LED_GREEN, 0);
+		msleep(50);
+	}
+	pcm_recompute(xpd, 0);
+	return 0;
+err:
+	clean_proc(xbus, xpd);
+	XPD_ERR(xpd, "Failed initializing registers (%d)\n", ret);
+	return ret;
+}
+
+static int FXO_card_remove(xbus_t *xbus, xpd_t *xpd)
+{
+	struct FXO_priv_data	*priv;
+
+	BUG_ON(!xpd);
+	priv = xpd->priv;
+	XPD_DBG(GENERAL, xpd, "\n");
+	clean_proc(xbus, xpd);
+	return 0;
+}
+
+static int FXO_card_zaptel_preregistration(xpd_t *xpd, bool on)
+{
+	xbus_t			*xbus;
+	struct FXO_priv_data	*priv;
+	int			i;
+
+	BUG_ON(!xpd);
+	xbus = xpd->xbus;
+	BUG_ON(!xbus);
+	priv = xpd->priv;
+	BUG_ON(!priv);
+	XPD_DBG(GENERAL, xpd, "%s\n", (on)?"ON":"OFF");
+	for_each_line(xpd, i) {
+		struct zt_chan	*cur_chan = &xpd->chans[i];
+
+		XPD_DBG(GENERAL, xpd, "setting FXO channel %d\n", i);
+		snprintf(cur_chan->name, MAX_CHANNAME, "XPP_FXO/%02d/%1d%1d/%d",
+			xbus->num, xpd->addr.unit, xpd->addr.subunit, i);
+		cur_chan->chanpos = i + 1;
+		cur_chan->pvt = xpd;
+		cur_chan->sigcap = FXO_DEFAULT_SIGCAP;
+	}
+	for_each_line(xpd, i) {
+		MARK_ON(priv, i, LED_GREEN);
+		msleep(4);
+	}
+	return 0;
+}
+
+static int FXO_card_zaptel_postregistration(xpd_t *xpd, bool on)
+{
+	xbus_t			*xbus;
+	struct FXO_priv_data	*priv;
+	int			i;
+
+	BUG_ON(!xpd);
+	xbus = xpd->xbus;
+	BUG_ON(!xbus);
+	priv = xpd->priv;
+	BUG_ON(!priv);
+	XPD_DBG(GENERAL, xpd, "%s\n", (on)?"ON":"OFF");
+	for_each_line(xpd, i) {
+		MARK_OFF(priv, i, LED_GREEN);
+		msleep(2);
+		// MARK_OFF(priv, i, LED_RED);
+		msleep(2);
+	}
+	return 0;
+}
+
+static int FXO_card_hooksig(xbus_t *xbus, xpd_t *xpd, int pos, zt_txsig_t txsig)
+{
+	struct FXO_priv_data	*priv;
+
+	priv = xpd->priv;
+	BUG_ON(!priv);
+	LINE_DBG(SIGNAL, xpd, pos, "%s\n", txsig2str(txsig));
+	BUG_ON(xpd->direction != TO_PSTN);
+	/* XXX Enable hooksig for FXO XXX */
+	switch(txsig) {
+		case ZT_TXSIG_START:
+			break;
+		case ZT_TXSIG_OFFHOOK:
+			do_sethook(xpd, pos, 1);
+			break;
+		case ZT_TXSIG_ONHOOK:
+			do_sethook(xpd, pos, 0);
+			break;
+		default:
+			XPD_NOTICE(xpd, "Can't set tx state to %s (%d)\n",
+				txsig2str(txsig), txsig);
+			return -EINVAL;
+	}
+	pcm_recompute(xpd, 0);
+	return 0;
+}
+
+static int FXO_card_open(xpd_t *xpd, lineno_t chan)
+{
+	struct FXO_priv_data	*priv;
+
+	BUG_ON(!xpd);
+	priv = xpd->priv;
+	/*
+	 * We pretend to have battery. If this is really the case
+	 * than next calls to update_battery_status() won't change it.
+	 * If we don't have battery, than on the next calls to
+	 * update_battery_status() a battery_debounce[] cycle would start.
+	 * Than, if no-battery is persistent, asterisk would be notified.
+	 */
+	BIT_SET(priv->battery, chan);
+	return 0;
+}
+
+static void poll_battery(xbus_t *xbus, xpd_t *xpd)
+{
+	int	i;
+
+	for_each_line(xpd, i) {
+		DAA_DIRECT_REQUEST(xbus, xpd, i, DAA_READ, DAA_REG_VBAT, 0);
+	}
+}
+
+static void poll_current(xbus_t *xbus, xpd_t *xpd)
+{
+	int	i;
+
+	for_each_line(xpd, i) {
+		if (IS_SET(xpd->offhook, i))
+			DAA_DIRECT_REQUEST(xbus, xpd, i, DAA_READ, DAA_REG_CURRENT, 0);
+	}
+}
+
+#ifdef	WITH_METERING
+static void poll_metering(xbus_t *xbus, xpd_t *xpd)
+{
+	int	i;
+
+	for_each_line(xpd, i) {
+		if (IS_SET(xpd->offhook, i))
+			DAA_DIRECT_REQUEST(xbus, xpd, i, DAA_READ, DAA_REG_METERING, 0);
+	}
+}
+#endif
+
+static void handle_fxo_ring(xpd_t *xpd)
+{
+	struct FXO_priv_data	*priv;
+	int			i;
+
+	priv = xpd->priv;
+	for_each_line(xpd, i) {
+		if(atomic_read(&priv->ring_debounce[i]) > 0) {
+			/* Maybe start ring */
+			if(atomic_dec_and_test(&priv->ring_debounce[i]))
+				mark_ring(xpd, i, 1, 1);
+		} else if (atomic_read(&priv->ring_debounce[i]) < 0) {
+			/* Maybe stop ring */
+			if(atomic_inc_and_test(&priv->ring_debounce[i]))
+				mark_ring(xpd, i, 0, 1);
+		}
+	}
+}
+
+static int FXO_card_tick(xbus_t *xbus, xpd_t *xpd)
+{
+	struct FXO_priv_data	*priv;
+
+	BUG_ON(!xpd);
+	priv = xpd->priv;
+	BUG_ON(!priv);
+	if(poll_battery_interval != 0 && (priv->poll_counter % poll_battery_interval) == 0)
+		poll_battery(xbus, xpd);
+	if(poll_power_denial_interval != 0 && (priv->poll_counter % poll_power_denial_interval) == 0)
+		poll_current(xbus, xpd);
+#ifdef	WITH_METERING
+	if(poll_metering_interval != 0 && (priv->poll_counter % poll_metering_interval) == 0)
+		poll_metering(xbus, xpd);
+#endif
+	handle_fxo_leds(xpd);
+	handle_fxo_ring(xpd);
+	priv->poll_counter++;
+	return 0;
+}
+
+/* FIXME: based on data from from wctdm.h */
+#include <wctdm.h>
+/*
+ * The first register is the ACIM, the other are coefficient registers.
+ * We define the array size explicitly to track possible inconsistencies
+ * if the struct is modified.
+ */
+static const char echotune_regs[sizeof(struct wctdm_echo_coefs)] = {30, 45, 46, 47, 48, 49, 50, 51, 52};
+
+static int FXO_card_ioctl(xpd_t *xpd, int pos, unsigned int cmd, unsigned long arg)
+{
+	int 			i,ret;
+	unsigned char		echotune_data[ARRAY_SIZE(echotune_regs)];
+
+	BUG_ON(!xpd);
+	if(!TRANSPORT_RUNNING(xpd->xbus))
+		return -ENODEV;
+	switch (cmd) {
+		case WCTDM_SET_ECHOTUNE:
+			XPD_DBG(GENERAL, xpd, "-- Setting echo registers: \n");
+			/* first off: check if this span is fxs. If not: -EINVALID */
+			if (copy_from_user(&echotune_data, (void __user *)arg, sizeof(echotune_data)))
+				return -EFAULT;
+
+			for (i = 0; i < ARRAY_SIZE(echotune_regs); i++) {
+				XPD_DBG(REGS, xpd, "Reg=0x%02X, data=0x%02X\n", echotune_regs[i], echotune_data[i]);
+				ret = DAA_DIRECT_REQUEST(xpd->xbus, xpd, pos, DAA_WRITE, echotune_regs[i], echotune_data[i]);
+				if (ret < 0) {
+					LINE_NOTICE(xpd, pos, "Couldn't write %0x02X to register %0x02X\n",
+							echotune_data[i], echotune_regs[i]);
+					return ret;
+				}
+				msleep(1);
+			}
+
+			XPD_DBG(GENERAL, xpd, "-- Set echo registers successfully\n");
+			break;
+		case ZT_TONEDETECT:
+			/*
+			 * Asterisk call all span types with this (FXS specific)
+			 * call. Silently ignore it.
+			 */
+			LINE_DBG(GENERAL, xpd, pos,
+				"ZT_TONEDETECT (FXO: NOTIMPLEMENTED)\n");
+			return -ENOTTY;
+		default:
+			report_bad_ioctl(THIS_MODULE->name, xpd, pos, cmd);
+			return -ENOTTY;
+	}
+	return 0;
+}
+
+/*---------------- FXO: HOST COMMANDS -------------------------------------*/
+
+/* 0x0F */ HOSTCMD(FXO, XPD_STATE, bool on)
+{
+	int			ret = 0;
+	struct FXO_priv_data	*priv;
+
+	BUG_ON(!xbus);
+	BUG_ON(!xpd);
+	priv = xpd->priv;
+	BUG_ON(!priv);
+	XPD_DBG(GENERAL, xpd, "%s\n", (on) ? "on" : "off");
+	return ret;
+}
+
+/* 0x0F */ HOSTCMD(FXO, RING, lineno_t chan, bool on)
+{
+	BUG_ON(!xbus);
+	BUG_ON(!xpd);
+	LINE_DBG(SIGNAL, xpd, chan, "%s\n", (on) ? "on" : "off");
+	return DAA_DIRECT_REQUEST(xbus, xpd, chan, DAA_WRITE, 0x40, (on)?0x04:0x01);
+}
+
+/* 0x0F */ HOSTCMD(FXO, RELAY_OUT, byte which, bool on)
+{
+	return -ENOSYS;
+}
+
+/*---------------- FXO: Astribank Reply Handlers --------------------------*/
+
+HANDLER_DEF(FXO, SIG_CHANGED)
+{
+	xpp_line_t	sig_status = RPACKET_FIELD(pack, FXO, SIG_CHANGED, sig_status);
+	xpp_line_t	sig_toggles = RPACKET_FIELD(pack, FXO, SIG_CHANGED, sig_toggles);
+	unsigned long	flags;
+	int		i;
+	struct FXO_priv_data	*priv;
+
+	if(!xpd) {
+		notify_bad_xpd(__FUNCTION__, xbus, XPACKET_ADDR(pack), cmd->name);
+		return -EPROTO;
+	}
+	priv = xpd->priv;
+	BUG_ON(!priv);
+	XPD_DBG(SIGNAL, xpd, "(PSTN) sig_toggles=0x%04X sig_status=0x%04X\n", sig_toggles, sig_status);
+	spin_lock_irqsave(&xpd->lock, flags);
+	for_each_line(xpd, i) {
+		int	debounce;
+
+		if(IS_SET(sig_toggles, i)) {
+			if(!IS_SET(priv->battery, i)) {
+				LINE_DBG(SIGNAL, xpd, i, "SIG_CHANGED while battery is off.\n");
+				// FIXME: allow dialing without battery polling...
+				// continue;
+			}
+			/* First report false ring alarms */
+			debounce = atomic_read(&priv->ring_debounce[i]);
+			if(debounce)
+				LINE_NOTICE(xpd, i, "debounced false ring (only %d ticks)\n", debounce);
+			/*
+			 * Now set a new ring alarm.
+			 * It will be checked in handle_fxo_ring()
+			 */
+			debounce = (IS_SET(sig_status, i)) ? ring_debounce : -ring_debounce;
+			atomic_set(&priv->ring_debounce[i], debounce);
+		}
+	}
+	spin_unlock_irqrestore(&xpd->lock, flags);
+	return 0;
+}
+
+#ifndef ZT_GET_PARAMS_V1
+#define zt_alarm_channel(a,b) zt_qevent_lock(a,( (b)==ZT_ALARM_NONE )? \
+	ZT_EVENT_NOALARM : ZT_EVENT_ALARM)
+#endif
+static void update_battery_status(xpd_t *xpd, byte data_low, lineno_t chipsel)
+{
+	struct FXO_priv_data	*priv;
+	byte			bat = abs((signed char)data_low);
+	byte			pol = IS_SET(data_low, 7);
+	int			msec;
+
+
+	priv = xpd->priv;
+	BUG_ON(!priv);
+	priv->battery_voltage[chipsel] = data_low;
+	if(bat < BAT_THRESHOLD) {
+		/*
+		 * Check for battery voltage fluctuations
+		 */
+		if(IS_SET(priv->battery, chipsel)) {
+			int	milliseconds;
+
+			milliseconds = priv->battery_debounce[chipsel]++ *
+				poll_battery_interval;
+			if(milliseconds > BAT_DEBOUNCE) {
+				LINE_DBG(SIGNAL, xpd, chipsel, "BATTERY OFF voltage=%d\n", bat);
+				BIT_CLR(priv->battery, chipsel);
+				if(SPAN_REGISTERED(xpd))
+					zt_alarm_channel(&xpd->chans[chipsel], ZT_ALARM_RED);
+			}
+
+		}
+	} else {
+		priv->battery_debounce[chipsel] = 0;
+		if(!IS_SET(priv->battery, chipsel)) {
+			LINE_DBG(SIGNAL, xpd, chipsel, "BATTERY ON voltage=%d\n", bat);
+			BIT_SET(priv->battery, chipsel);
+			if(SPAN_REGISTERED(xpd))
+				zt_alarm_channel(&xpd->chans[chipsel], ZT_ALARM_NONE);
+		}
+	}
+	/*
+	 * Handle reverse polarity
+	 */
+	if(IS_SET(priv->polarity, chipsel) == pol) {
+		/* same, same, nothing to see here, move on */
+		priv->polarity_counter[chipsel] = 0;
+		return;
+	}
+	/*
+	 * Track polarity reversals and debounce spikes.
+	 * Only reversals with long duration count.
+	 */
+	msec = priv->polarity_counter[chipsel]++ * poll_battery_interval;
+	if (msec >= POLREV_THRESHOLD) {
+		LINE_DBG(SIGNAL, xpd, chipsel, "Polarity is %s\n",
+				(pol)?"Positive":"Negative");
+		priv->polarity_counter[chipsel] = 0;
+		if (pol)
+			BIT_SET(priv->polarity, chipsel);
+		else
+			BIT_CLR(priv->polarity, chipsel);
+		/* polarity reversal during offhook should be reported to zaptel */
+		if(IS_SET(xpd->offhook, chipsel)) {
+			/* Inform Zaptel */
+			LINE_DBG(SIGNAL, xpd, chipsel, "Send ZT_EVENT_POLARITY\n");
+			zt_qevent_lock(&xpd->chans[chipsel], ZT_EVENT_POLARITY);
+#if 0
+			/*
+			 * These two lines hangup the channel (by sending a message to
+			 * the firmware), and inform Zaptel that the line has been hung-up.
+			 * They are not needed if Asterisk does the hangup after receiving
+			 * a notification from Zaptel (which is sent by the above zt_qevent_lock().
+			 * Asterisk does that if it has "hanguponpolarityswitch=1" in zapata.conf.
+			 */
+			do_sethook(xpd, chipsel, 0);
+			update_line_status(xpd, chipsel, 0);
+			pcm_recompute(xpd, 0);
+#endif
+		}
+	}
+}
+
+static void update_power_denial(xpd_t *xpd, byte data_low, lineno_t chipsel)
+{
+	struct FXO_priv_data	*priv;
+
+	priv = xpd->priv;
+	BUG_ON(!priv);
+	if (IS_SET(xpd->offhook, chipsel) && data_low < POWER_DENIAL_CURRENT) {
+		/* Current dropped */
+		priv->current_counter[chipsel]++;
+		if (priv->current_counter[chipsel] * poll_battery_interval >= POWER_DENIAL_TIME) {
+			LINE_DBG(SIGNAL, xpd, chipsel, "Power Denial Hangup\n");
+			priv->current_counter[chipsel] = 0;
+			do_sethook(xpd, chipsel, 0);
+			update_line_status(xpd, chipsel, 0);
+			pcm_recompute(xpd, 0);
+		}
+	} else
+		priv->current_counter[chipsel] = 0;
+}
+
+#ifdef	WITH_METERING
+#define	BTD_BIT	BIT(0)
+
+static void update_metering_state(xpd_t *xpd, byte data_low, lineno_t chipsel)
+{
+	struct FXO_priv_data	*priv;
+	bool			metering_tone = data_low & BTD_BIT;
+	bool			old_metering_tone;
+
+	priv = xpd->priv;
+	BUG_ON(!priv);
+	old_metering_tone = IS_SET(priv->metering_tone_state, chipsel);
+	LINE_DBG(SIGNAL, xpd, chipsel, "METERING: %s [dL=0x%X] (%d)\n",
+		(metering_tone) ? "ON" : "OFF",
+		data_low, priv->metering_count[chipsel]);
+	if(metering_tone && !old_metering_tone) {
+		/* Rising edge */
+		priv->metering_count[chipsel]++;
+		BIT_SET(priv->metering_tone_state, chipsel);
+	} else if(!metering_tone && old_metering_tone)
+		BIT_CLR(priv->metering_tone_state, chipsel);
+	if(metering_tone) {
+		/* Clear the BTD bit */
+		data_low &= ~BTD_BIT;
+		DAA_DIRECT_REQUEST(xpd->xbus, xpd, chipsel, DAA_WRITE, DAA_REG_METERING, data_low);
+	}
+}
+#endif
+
+static int FXO_card_register_reply(xbus_t *xbus, xpd_t *xpd, reg_cmd_t *info)
+{
+	struct FXO_priv_data	*priv;
+	lineno_t		chipsel;
+
+	priv = xpd->priv;
+	BUG_ON(!priv);
+	chipsel = REG_FIELD(info, chipsel);
+	switch(REG_FIELD(info, regnum)) {
+		case DAA_REG_VBAT:
+			update_battery_status(xpd, REG_FIELD(info, data_low), chipsel);
+			break;
+		case DAA_REG_CURRENT:
+			update_power_denial(xpd, REG_FIELD(info, data_low), chipsel);
+			break;
+#ifdef	WITH_METERING
+		case DAA_REG_METERING:
+			update_metering_state(xpd, REG_FIELD(info, data_low), chipsel);
+			break;
+#endif
+	}
+	LINE_DBG(REGS, xpd, chipsel, "%c reg_num=0x%X, dataL=0x%X dataH=0x%X\n",
+			((info->bytes == 3)?'I':'D'),
+			REG_FIELD(info, regnum),
+			REG_FIELD(info, data_low),
+			REG_FIELD(info, data_high));
+	/* Update /proc info only if reply relate to the last slic read request */
+	if(
+			REG_FIELD(&xpd->requested_reply, regnum) == REG_FIELD(info, regnum) &&
+			REG_FIELD(&xpd->requested_reply, do_subreg) == REG_FIELD(info, do_subreg) &&
+			REG_FIELD(&xpd->requested_reply, subreg) == REG_FIELD(info, subreg)) {
+		xpd->last_reply = *info;
+	}
+	return 0;
+}
+
+
+static xproto_table_t PROTO_TABLE(FXO) = {
+	.owner = THIS_MODULE,
+	.entries = {
+		/*	Prototable	Card	Opcode		*/
+		XENTRY(	FXO,		FXO,	SIG_CHANGED	),
+	},
+	.name = "FXO",
+	.type = XPD_TYPE_FXO,
+	.xops = {
+		.card_new	= FXO_card_new,
+		.card_init	= FXO_card_init,
+		.card_remove	= FXO_card_remove,
+		.card_zaptel_preregistration	= FXO_card_zaptel_preregistration,
+		.card_zaptel_postregistration	= FXO_card_zaptel_postregistration,
+		.card_hooksig	= FXO_card_hooksig,
+		.card_tick	= FXO_card_tick,
+		.card_pcm_fromspan	= generic_card_pcm_fromspan,
+		.card_pcm_tospan	= generic_card_pcm_tospan,
+		.card_ioctl	= FXO_card_ioctl,
+		.card_open	= FXO_card_open,
+		.card_register_reply	= FXO_card_register_reply,
+
+		.RING		= XPROTO_CALLER(FXO, RING),
+		.RELAY_OUT	= XPROTO_CALLER(FXO, RELAY_OUT),
+		.XPD_STATE	= XPROTO_CALLER(FXO, XPD_STATE),
+	},
+	.packet_is_valid = fxo_packet_is_valid,
+	.packet_dump = fxo_packet_dump,
+};
+
+static bool fxo_packet_is_valid(xpacket_t *pack)
+{
+	const xproto_entry_t	*xe;
+
+	//DBG(GENERAL, "\n");
+	xe = xproto_card_entry(&PROTO_TABLE(FXO), XPACKET_OP(pack));
+	return xe != NULL;
+}
+
+static void fxo_packet_dump(const char *msg, xpacket_t *pack)
+{
+	DBG(GENERAL, "%s\n", msg);
+}
+
+/*------------------------- DAA Handling --------------------------*/
+
+static int proc_fxo_info_read(char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+	int			len = 0;
+	unsigned long		flags;
+	xpd_t			*xpd = data;
+	struct FXO_priv_data	*priv;
+	int			i;
+
+	if(!xpd)
+		return -ENODEV;
+	spin_lock_irqsave(&xpd->lock, flags);
+	priv = xpd->priv;
+	BUG_ON(!priv);
+	len += sprintf(page + len, "\t%-17s: ", "Channel");
+	for_each_line(xpd, i) {
+		if(!IS_SET(xpd->digital_outputs, i) && !IS_SET(xpd->digital_inputs, i))
+			len += sprintf(page + len, "%3d ", i % 10);
+	}
+	len += sprintf(page + len, "\n\t%-17s: ", "ledstate");
+	for_each_line(xpd, i) {
+		if(!IS_SET(xpd->digital_outputs, i) && !IS_SET(xpd->digital_inputs, i))
+			len += sprintf(page + len, "%3d ", IS_SET(priv->ledstate[LED_GREEN], i));
+	}
+	len += sprintf(page + len, "\n\t%-17s: ", "blinking");
+	for_each_line(xpd, i) {
+		if(!IS_SET(xpd->digital_outputs, i) && !IS_SET(xpd->digital_inputs, i))
+			len += sprintf(page + len, "%3d ", IS_BLINKING(priv,i,LED_GREEN));
+	}
+	len += sprintf(page + len, "\n\t%-17s: ", "battery");
+	for_each_line(xpd, i) {
+		len += sprintf(page + len, "%3d ", IS_SET(priv->battery, i));
+	}
+	len += sprintf(page + len, "\n\t%-17s: ", "polarity");
+	for_each_line(xpd, i) {
+		len += sprintf(page + len, "%3d ", IS_SET(priv->polarity, i));
+	}
+	len += sprintf(page + len, "\n\t%-17s: ", "polarity_counter");
+	for_each_line(xpd, i) {
+		len += sprintf(page + len, "%3d ", priv->polarity_counter[i]);
+	}
+	len += sprintf(page + len, "\n\t%-17s: ", "battery_voltage");
+	for_each_line(xpd, i) {
+		len += sprintf(page + len, "%3d ", priv->battery_voltage[i]);
+	}
+#ifdef	WITH_METERING
+	len += sprintf(page + len, "\n\t%-17s: ", "metering");
+	for_each_line(xpd, i) {
+		len += sprintf(page + len, "%3d ", priv->metering_count[i]);
+	}
+#endif
+	len += sprintf(page + len, "\n");
+	spin_unlock_irqrestore(&xpd->lock, flags);
+	if (len <= off+count)
+		*eof = 1;
+	*start = page + off;
+	len -= off;
+	if (len > count)
+		len = count;
+	if (len < 0)
+		len = 0;
+	return len;
+}
+
+/*
+ *
+ * Direct/Indirect
+ *     |
+ *     | Reg#
+ *     | |
+ *     | |  Data (only in Write)
+ *     | |    |
+ *     | |  +-+-+
+ *     v v  v   v
+ * FF WD 06 01 05
+ * ^  ^
+ * |  |
+ * |  Write/Read
+ * |
+ * Chan#
+ *
+ */
+static int handle_register_command(xpd_t *xpd, char *cmdline)
+{
+	unsigned		chipsel;
+	unsigned		data_low = 0;
+	char			op;		/* [W]rite, [R]ead */
+	char			reg_type;	/* [D]irect */
+	int			reg_num;
+	int			elements;
+	bool			writing;
+	char			*p;
+	reg_cmd_t		regcmd;
+	xbus_t			*xbus;
+	int			ret = -EINVAL;
+
+	BUG_ON(!xpd);
+	xbus = xpd->xbus;
+	if((p = strchr(cmdline, '#')) != NULL)	/* Truncate comments */
+		*p = '\0';
+	if((p = strchr(cmdline, ';')) != NULL)	/* Truncate comments */
+		*p = '\0';
+	for(p = cmdline; *p && (*p == ' ' || *p == '\t'); p++) /* Trim leading whitespace */
+		;
+	if(*p == '\0')
+		return 0;
+
+	if(!XBUS_GET(xbus)) {
+		XBUS_DBG(GENERAL, xbus, "Dropped packet. Is shutting down.\n");
+		return -EBUSY;
+	}
+	elements = sscanf(cmdline, "%d %c%c %x %x",
+			&chipsel,
+			&op, &reg_type, &reg_num,
+			&data_low);
+	XPD_DBG(PROC, xpd, "'%s': %d %c%c %02X %02X\n", cmdline, chipsel, op, reg_type, reg_num, data_low);
+	if(elements < 4) {	// At least: chipsel, op, reg_type, reg_num
+		ERR("Not enough arguments: (%d args) '%s'\n", elements, cmdline);
+		goto out;
+	}
+	if(!VALID_CHIPSEL(chipsel)) {
+		ERR("Bad chipsel number: %d\n", chipsel);
+		goto out;
+	}
+	REG_FIELD(&regcmd, chipsel) = chipsel;
+	REG_FIELD(&regcmd, do_subreg) = 0;
+	switch(op) {
+		case 'W':
+			writing = 1;
+			break;
+		case 'R':
+			writing = 0;
+			break;
+		default:
+			ERR("Unkown operation type '%c'\n", op);
+			goto out;
+	}
+	switch(reg_type) {
+		case 'D':
+			REG_FIELD(&regcmd, regnum) = reg_num;
+			REG_FIELD(&regcmd, subreg) = 0;
+			break;
+		default:
+			ERR("Unkown register type '%c'\n", reg_type);
+			goto out;
+	}
+	if(
+			(op == 'W' && reg_type == 'D' && elements != 5) ||
+			(op == 'R' && reg_type == 'D' && elements != 4)
+	  ) {
+		ERR("%s: '%s' (%d elements): %d %c%c %02X %02X\n", __FUNCTION__,
+				cmdline, elements,
+				chipsel, op, reg_type, reg_num, data_low);
+		goto out;
+	}
+	regcmd.bytes = sizeof(regcmd) - 1;
+	REG_FIELD(&regcmd, data_low) = data_low;
+	REG_FIELD(&regcmd, data_high) = 0;
+	REG_FIELD(&regcmd, read_request) = writing;
+	xpd->requested_reply = regcmd;
+	if(print_dbg)
+		dump_reg_cmd("FXO", &regcmd, 1);
+	ret = DAA_DIRECT_REQUEST(xpd->xbus, xpd, REG_FIELD(&regcmd, chipsel), writing, REG_FIELD(&regcmd, regnum), REG_FIELD(&regcmd, data_low));
+out:
+	XBUS_PUT(xbus);
+	return ret;
+}
+
+static int proc_xpd_register_write(struct file *file, const char __user *buffer, unsigned long count, void *data)
+{
+	xpd_t		*xpd = data;
+	char		buf[MAX_PROC_WRITE];
+	char		*p;
+	int		i;
+	int		ret;
+
+	if(!xpd)
+		return -ENODEV;
+	for(i = 0; i < count; /* noop */) {
+		for(p = buf; p < buf + MAX_PROC_WRITE; p++) {	/* read a line */
+			if(i >= count)
+				break;
+			if(get_user(*p, buffer + i))
+				return -EFAULT;
+			i++;
+			if(*p == '\n' || *p == '\r')	/* whatever */
+				break;
+		}
+		if(p >= buf + MAX_PROC_WRITE)
+			return -E2BIG;
+		*p = '\0';
+		ret = handle_register_command(xpd, buf);
+		if(ret < 0)
+			return ret;
+		msleep(1);
+	}
+	return count;
+}
+
+static int proc_xpd_register_read(char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+	int			len = 0;
+	unsigned long		flags;
+	xpd_t			*xpd = data;
+	reg_cmd_t		*info;
+	byte			regnum;
+
+	if(!xpd)
+		return -ENODEV;
+	spin_lock_irqsave(&xpd->lock, flags);
+	info = &xpd->last_reply;
+	regnum = REG_FIELD(info, regnum);
+	len += sprintf(page + len, "# Writing bad data into this file may damage your hardware!\n");
+	len += sprintf(page + len, "# Consult firmware docs first\n");
+	len += sprintf(page + len, "#\n");
+	len += sprintf(page + len, "#CH\tD/I\tReg.\tDL\n");
+	len += sprintf(page + len, "%2d\tRD\t%02X\t%02X\n",
+			REG_FIELD(info, chipsel),
+			regnum, REG_FIELD(info, data_low));
+	spin_unlock_irqrestore(&xpd->lock, flags);
+	if (len <= off+count)
+		*eof = 1;
+	*start = page + off;
+	len -= off;
+	if (len > count)
+		len = count;
+	if (len < 0)
+		len = 0;
+	return len;
+}
+
+#ifdef	WITH_METERING
+static int proc_xpd_metering_read(char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+	int			len = 0;
+	unsigned long		flags;
+	xpd_t			*xpd = data;
+	struct FXO_priv_data	*priv;
+	int			i;
+
+	if(!xpd)
+		return -ENODEV;
+	priv = xpd->priv;
+	BUG_ON(!priv);
+	spin_lock_irqsave(&xpd->lock, flags);
+	len += sprintf(page + len, "# Chan\tMeter (since last read)\n");
+	for_each_line(xpd, i) {
+		len += sprintf(page + len, "%d\t%d\n",
+			i, priv->metering_count[i]);
+	}
+	spin_unlock_irqrestore(&xpd->lock, flags);
+	if (len <= off+count)
+		*eof = 1;
+	*start = page + off;
+	len -= off;
+	if (len > count)
+		len = count;
+	if (len < 0)
+		len = 0;
+	/* Zero meters */
+	for_each_line(xpd, i)
+		priv->metering_count[i] = 0;
+	return len;
+}
+#endif
+
+int __init card_fxo_startup(void)
+{
+	if(ring_debounce <= 0) {
+		ERR("ring_debounce=%d. Must be positive number of ticks\n", ring_debounce);
+		return -EINVAL;
+	}
+	INFO("revision %s\n", XPP_VERSION);
+#ifdef	WITH_METERING
+	INFO("FEATURE: WITH METERING Detection\n");
+#else
+	INFO("FEATURE: NO METERING Detection\n");
+#endif
+	xproto_register(&PROTO_TABLE(FXO));
+	return 0;
+}
+
+void __exit card_fxo_cleanup(void)
+{
+	xproto_unregister(&PROTO_TABLE(FXO));
+}
+
+MODULE_DESCRIPTION("XPP FXO Card Driver");
+MODULE_AUTHOR("Oron Peled <oron@actcom.co.il>");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(XPP_VERSION);
+MODULE_ALIAS_XPD(XPD_TYPE_FXO);
+
+module_init(card_fxo_startup);
+module_exit(card_fxo_cleanup);