fOffHook |= 2;	return fOffHook;}static void ixj_ring_off(board){	IXJ *j = &ixj[board];	if (j->dsp.low == 0x20)	// Internet PhoneJACK	 {		if (ixjdebug > 0)			printk(KERN_INFO "IXJ Ring Off\n");		j->gpio.bytes.high = 0x0B;		j->gpio.bytes.low = 0x00;		j->gpio.bits.gpio1 = 0;		j->gpio.bits.gpio2 = 1;		j->gpio.bits.gpio5 = 0;		ixj_WriteDSPCommand(j->gpio.word, board);	} else			// Internet LineJACK	 {		if (ixjdebug > 0)			printk(KERN_INFO "IXJ Ring Off\n");		SLIC_SetState(PLD_SLIC_STATE_STANDBY, board);		SLIC_GetState(board);	}}static void ixj_ring_start(int board){	IXJ *j = &ixj[board];	j->flags.cringing = 1;	if (ixj_hookstate(board) & 1) {		if (j->port == PORT_POTS)			ixj_ring_off(board);		j->flags.cringing = 0;	} else {		j->ring_cadence_jif = jiffies;		j->ring_cadence_t = 15;		if (j->ring_cadence & 1 << j->ring_cadence_t) {			ixj_ring_on(board);		} else {			ixj_ring_off(board);		}	}}static int ixj_ring(int board){	char cntr;	unsigned long jif, det;	IXJ *j = &ixj[board];	j->flags.ringing = 1;	if (ixj_hookstate(board) & 1) {		ixj_ring_off(board);		j->flags.ringing = 0;		return 1;	}	det = 0;	for (cntr = 0; cntr < j->maxrings; cntr++) {		jif = jiffies + (1 * hertz);		ixj_ring_on(board);		while (time_before(jiffies, jif)) {			if (ixj_hookstate(board) & 1) {				ixj_ring_off(board);				j->flags.ringing = 0;				return 1;			}			current->state = TASK_INTERRUPTIBLE;			schedule_timeout(1);			if (signal_pending(current))				break;		}		jif = jiffies + (3 * hertz);		ixj_ring_off(board);		while (time_before(jiffies, jif)) {			if (ixj_hookstate(board) & 1) {				det = jiffies + (hertz / 100);				while (time_before(jiffies, det)) {					current->state = TASK_INTERRUPTIBLE;					schedule_timeout(1);					if (signal_pending(current))						break;				}				if (ixj_hookstate(board) & 1) {					j->flags.ringing = 0;					return 1;				}			}			current->state = TASK_INTERRUPTIBLE;			schedule_timeout(1);			if (signal_pending(current))				break;		}	}	ixj_ring_off(board);	j->flags.ringing = 0;	return 0;}int ixj_open(struct phone_device *p, struct file *file_p){	IXJ *j = &ixj[p->board];	if (!j->DSPbase)		return -ENODEV;	if (file_p->f_mode & FMODE_READ)		j->readers++;	if (file_p->f_mode & FMODE_WRITE)		j->writers++;	MOD_INC_USE_COUNT;	if (ixjdebug > 0)		printk(KERN_INFO "Opening board %d\n", p->board);	return 0;}int ixj_release(struct inode *inode, struct file *file_p){	IXJ_TONE ti;	int board = NUM(inode->i_rdev);	IXJ *j = &ixj[board];	if (ixjdebug > 0)		printk(KERN_INFO "Closing board %d\n", NUM(inode->i_rdev));	daa_set_mode(board, SOP_PU_SLEEP);	ixj_set_port(board, PORT_POTS);	aec_stop(board);	ixj_play_stop(board);	ixj_record_stop(board);	// Restore the tone table to default settings.	ti.tone_index = 10;	ti.gain0 = 1;	ti.freq0 = hz941;	ti.gain1 = 0;	ti.freq1 = hz1209;	ti.tone_index = 11;	ti.gain0 = 1;	ti.freq0 = hz941;	ti.gain1 = 0;	ti.freq1 = hz1336;	ti.tone_index = 12;	ti.gain0 = 1;	ti.freq0 = hz941;	ti.gain1 = 0;	ti.freq1 = hz1477;	ti.tone_index = 13;	ti.gain0 = 1;	ti.freq0 = hz800;	ti.gain1 = 0;	ti.freq1 = 0;	ixj_init_tone(board, &ti);	ti.tone_index = 14;	ti.gain0 = 1;	ti.freq0 = hz1000;	ti.gain1 = 0;	ti.freq1 = 0;	ixj_init_tone(board, &ti);	ti.tone_index = 15;	ti.gain0 = 1;	ti.freq0 = hz1250;	ti.gain1 = 0;	ti.freq1 = 0;	ixj_init_tone(board, &ti);	ti.tone_index = 16;	ti.gain0 = 1;	ti.freq0 = hz950;	ti.gain1 = 0;	ti.freq1 = 0;	ixj_init_tone(board, &ti);	ti.tone_index = 17;	ti.gain0 = 1;	ti.freq0 = hz1100;	ti.gain1 = 0;	ti.freq1 = 0;	ixj_init_tone(board, &ti);	ti.tone_index = 18;	ti.gain0 = 1;	ti.freq0 = hz1400;	ti.gain1 = 0;	ti.freq1 = 0;	ixj_init_tone(board, &ti);	ti.tone_index = 19;	ti.gain0 = 1;	ti.freq0 = hz1500;	ti.gain1 = 0;	ti.freq1 = 0;	ixj_init_tone(board, &ti);	ti.tone_index = 20;	ti.gain0 = 1;	ti.freq0 = hz1600;	ti.gain1 = 0;	ti.freq1 = 0;	ixj_init_tone(board, &ti);	ti.tone_index = 21;	ti.gain0 = 1;	ti.freq0 = hz1800;	ti.gain1 = 0;	ti.freq1 = 0;	ixj_init_tone(board, &ti);	ti.tone_index = 22;	ti.gain0 = 1;	ti.freq0 = hz2100;	ti.gain1 = 0;	ti.freq1 = 0;	ixj_init_tone(board, &ti);	ti.tone_index = 23;	ti.gain0 = 1;	ti.freq0 = hz1300;	ti.gain1 = 0;	ti.freq1 = 0;	ixj_init_tone(board, &ti);	ti.tone_index = 24;	ti.gain0 = 1;	ti.freq0 = hz2450;	ti.gain1 = 0;	ti.freq1 = 0;	ixj_init_tone(board, &ti);	ti.tone_index = 25;	ti.gain0 = 1;	ti.freq0 = hz350;	ti.gain1 = 0;	ti.freq1 = hz440;	ixj_init_tone(board, &ti);	ti.tone_index = 26;	ti.gain0 = 1;	ti.freq0 = hz440;	ti.gain1 = 0;	ti.freq1 = hz480;	ixj_init_tone(board, &ti);	ti.tone_index = 27;	ti.gain0 = 1;	ti.freq0 = hz480;	ti.gain1 = 0;	ti.freq1 = hz620;	ixj_init_tone(board, &ti);	idle(board);	if (file_p->f_mode & FMODE_READ)		j->readers--;	if (file_p->f_mode & FMODE_WRITE)		j->writers--;	if (j->read_buffer && !j->readers) {		kfree(j->read_buffer);		j->read_buffer = NULL;		j->read_buffer_size = 0;	}	if (j->write_buffer && !j->writers) {		kfree(j->write_buffer);		j->write_buffer = NULL;		j->write_buffer_size = 0;	}	j->rec_codec = j->play_codec = 0;	j->rec_frame_size = j->play_frame_size = 0;	ixj_fasync(-1, file_p, 0);	// remove from list of async notification	MOD_DEC_USE_COUNT;	return 0;}static int read_filters(int board){	unsigned short fc, cnt;	int var;	IXJ *j = &ixj[board];	if (ixj_WriteDSPCommand(0x5144, board))		return -1;	fc = j->ssr.high << 8 | j->ssr.low;	if (fc == j->frame_count)		return 1;	j->frame_count = fc;	if (j->dtmf_proc)		return 1;	var = 10;	for (cnt = 0; cnt < 4; cnt++) {		if (ixj_WriteDSPCommand(0x5154 + cnt, board))			return -1;		if (ixj_WriteDSPCommand(0x515C, board))			return -1;		j->filter_hist[cnt] = j->ssr.high << 8 | j->ssr.low;		if (j->cadence_f[cnt].enable) {			if (j->filter_hist[cnt] & 3 && !(j->filter_hist[cnt] & 12)) {				if (j->cadence_f[cnt].state == 0) {					j->cadence_f[cnt].state = 1;					j->cadence_f[cnt].on1min = jiffies + (j->cadence_f[cnt].on1 * hertz * (100 - var) / 10000);					j->cadence_f[cnt].on1max = jiffies + (j->cadence_f[cnt].on1 * hertz * (100 + var) / 10000);				} else if (j->cadence_f[cnt].state == 2 &&					   (time_after(jiffies, j->cadence_f[cnt].off1min) &&					    time_before(jiffies, j->cadence_f[cnt].off1max))) {					if (j->cadence_f[cnt].on2) {						j->cadence_f[cnt].state = 3;						j->cadence_f[cnt].on2min = jiffies + (j->cadence_f[cnt].on2 * hertz * (100 - var) / 10000);						j->cadence_f[cnt].on2max = jiffies + (j->cadence_f[cnt].on2 * hertz * (100 + var) / 10000);					} else {						j->cadence_f[cnt].state = 6;					}				} else if (j->cadence_f[cnt].state == 4 &&					   (time_after(jiffies, j->cadence_f[cnt].off2min) &&					    time_before(jiffies, j->cadence_f[cnt].off2max))) {					if (j->cadence_f[cnt].on2) {						j->cadence_f[cnt].state = 5;						j->cadence_f[cnt].on3min = jiffies + (j->cadence_f[cnt].on3 * hertz * (100 - var) / 10000);						j->cadence_f[cnt].on3max = jiffies + (j->cadence_f[cnt].on3 * hertz * (100 + var) / 10000);					} else {						j->cadence_f[cnt].state = 6;					}				} else {					j->cadence_f[cnt].state = 0;				}			} else if (j->filter_hist[cnt] & 12 && !(j->filter_hist[cnt] & 3)) {				if (j->cadence_f[cnt].state == 1 &&				    (time_after(jiffies, j->cadence_f[cnt].on1min) &&				     time_before(jiffies, j->cadence_f[cnt].on1max))) {					j->cadence_f[cnt].state = 2;					j->cadence_f[cnt].off1min = jiffies + (j->cadence_f[cnt].off1 * hertz * (100 - var) / 10000);					j->cadence_f[cnt].off1max = jiffies + (j->cadence_f[cnt].off1 * hertz * (100 + var) / 10000);				} else if (j->cadence_f[cnt].state == 3 &&					   (time_after(jiffies, j->cadence_f[cnt].on2min) &&					    time_before(jiffies, j->cadence_f[cnt].on2max))) {					j->cadence_f[cnt].state = 4;					j->cadence_f[cnt].off2min = jiffies + (j->cadence_f[cnt].off2 * hertz * (100 - var) / 10000);					j->cadence_f[cnt].off2max = jiffies + (j->cadence_f[cnt].off2 * hertz * (100 + var) / 10000);				} else if (j->cadence_f[cnt].state == 5 &&					   (time_after(jiffies, j->cadence_f[cnt].on3min) &&					    time_before(jiffies, j->cadence_f[cnt].on3max))) {					j->cadence_f[cnt].state = 6;					j->cadence_f[cnt].off3min = jiffies + (j->cadence_f[cnt].off3 * hertz * (100 - var) / 10000);					j->cadence_f[cnt].off3max = jiffies + (j->cadence_f[cnt].off3 * hertz * (100 + var) / 10000);				} else {					j->cadence_f[cnt].state = 0;				}			}		}		if (j->cadence_f[cnt].state == 6) {			j->cadence_f[cnt].state = j->cadence_f[cnt].enable = 0;			switch (cnt) {			case 0:				j->ex.bits.fc0 = 1;				break;			case 1:				j->ex.bits.fc1 = 1;				break;			case 2:				j->ex.bits.fc2 = 1;				break;			case 3:				j->ex.bits.fc3 = 1;				break;			}		}		if ((j->filter_hist[cnt] & 3 && !(j->filter_hist[cnt] & 12)) ||		    (j->filter_hist[cnt] & 12 && !(j->filter_hist[cnt] & 3))) {			switch (cnt) {			case 0:				j->ex.bits.f0 = 1;				break;			case 1:				j->ex.bits.f1 = 1;				break;			case 2:				j->ex.bits.f2 = 1;				break;			case 3:				j->ex.bits.f3 = 1;				break;			}		}	}	return 0;}static int LineMonitor(int board){	IXJ *j = &ixj[board];	if (j->dtmf_proc) {		return -1;	}	j->dtmf_proc = 1;	if (ixj_WriteDSPCommand(0x7000, board))		// Line Monitor		return -1;	j->dtmf.bytes.high = j->ssr.high;	j->dtmf.bytes.low = j->ssr.low;	if (!j->dtmf_state && j->dtmf.bits.dtmf_valid) {		j->dtmf_state = 1;		j->dtmf_current = j->dtmf.bits.digit;	}	if (j->dtmf_state && !j->dtmf.bits.dtmf_valid)	// && j->dtmf_wp != j->dtmf_rp)	 {		j->dtmfbuffer[j->dtmf_wp] = j->dtmf_current;		j->dtmf_wp++;		if (j->dtmf_wp == 79)			j->dtmf_wp = 0;		j->ex.bits.dtmf_ready = 1;		j->dtmf_state = 0;	}	j->dtmf_proc = 0;	return 0;}ssize_t ixj_read(struct file * file_p, char *buf, size_t length, loff_t * ppos){	unsigned long i = *ppos;	IXJ *j = &ixj[NUM(file_p->f_dentry->d_inode->i_rdev)];	struct wait_queue wait =	{current, NULL};	if(j->flags.inread)		return -EALREADY;	j->flags.inread = 1;	add_wait_queue(&j->read_q, &wait);	current->state = TASK_INTERRUPTIBLE;	mb();	while (!j->read_buffer_ready || (j->dtmf_state && j->flags.dtmf_oob)) {		++j->read_wait;		if (file_p->f_flags & O_NONBLOCK) {			current->state = TASK_RUNNING;			remove_wait_queue(&j->read_q, &wait);			j->flags.inread = 0;			return -EAGAIN;		}		if (!ixj_hookstate(NUM(file_p->f_dentry->d_inode->i_rdev))) {			current->state = TASK_RUNNING;			remove_wait_queue(&j->read_q, &wait);			j->flags.inread = 0;			return 0;		}		interruptible_sleep_on(&j->read_q);		if (signal_pending(current)) {			current->state = TASK_RUNNING;			remove_wait_queue(&j->read_q, &wait);			j->flags.inread = 0;			return -EINTR;		}	}	remove_wait_queue(&j->read_q, &wait);	current->state = TASK_RUNNING;	/* Don't ever copy more than the user asks */	i = copy_to_user(buf, j->read_buffer, min(length, j->read_buffer_size));	j->read_buffer_ready = 0;	if (i) {		j->flags.inread = 0;		return -EFAULT;	}	else {		j->flags.inread = 0;		return min(length, j->read_buffer_size);	}}ssize_t ixj_enhanced_read(struct file * file_p, char *buf, size_t length,			  loff_t * ppos){	int pre_retval;	ssize_t read_retval = 0;	IXJ *j = &ixj[NUM(file_p->f_dentry->d_inode->i_rdev)];	pre_retval = ixj_PreRead(j, 0L);	switch (pre_retval) {	case NORMAL:		read_retval = ixj_read(file_p, buf, length, ppos);		ixj_PostRead(j, 0L);		break;	case NOPOST:		read_retval = ixj_read(file_p, buf, length, ppos);		break;	case POSTONLY:		ixj_PostRead(j, 0L);		break;	default:		read_retval = pre_retval;	}	return read_retval;}ssize_t ixj_write(struct file * file_p, const char *buf, size_t count, loff_t * ppos){	unsigned long i = *ppos;	int board = NUM(file_p->f_dentry->d_inode->i_rdev);	IXJ *j = &ixj[board];	struct wait_queue wait =	{current, NULL};	if(j->flags.inwrite)		return -EALREADY;	j->flags.inwrite = 1;	add_wait_queue(&j->write_q, &wait);	current->state = TASK_INTERRUPTIBLE;	mb();	while (!j->write_buffers_empty) {		++j->write_wait;		if (file_p->f_flags & O_NONBLOCK) {			current->state = TASK_RUNNING;			remove_wait_queue(&j->write_q, &wait);			j->flags.inwrite = 0;			return -EAGAIN;		}		if (!ixj_hookstate(NUM(file_p->f_dentry->d_inode->i_rdev))) {			current->state = TASK_RUNNING;			remove_wait_queue(&j->write_q, &wait);			j->flags.inwrite = 0;			return 0;		}		interruptible_sleep_on(&j->write_q);		if (signal_pending(current)) {			current->state = TASK_RUNNING;			remove_wait_queue(&j->write_q, &wait);			j->flags.inwrite = 0;			return -EINTR;		}	}	current->state = TASK_RUNNING;	remove_wait_queue(&j->write_q, &wait);	if (j->write_buffer_wp + count >= j->write_buffer_end)		j->write_buffer_wp = j->write_buffer;	i = copy_from_user(j->write_buffer_wp, buf, min(count, j->write_buffer_size));	if (i) {		j->flags.inwrite = 0;		return -EFAULT;	}	j->flags.inwrite = 0;	return min(count, j->write_buffer_size);}ssize_t ixj_enhanced_write(struct file * file_p, const char *buf, size_t count,			   loff_t * ppos){	int pre_retval;	ssize_t write_retval = 0;	IXJ *j = &ixj[NUM(file_p->f_dentry->d_inode->i_rdev)];	pre_retval = ixj_PreWrite(j, 0L);	switch (pre_retval) {	case NORMAL:		write_retval = ixj_write(file_p, buf, count, ppos);