X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fmedia%2Fdvb-frontends%2Fstv0900_sw.c;fp=kernel%2Fdrivers%2Fmedia%2Fdvb-frontends%2Fstv0900_sw.c;h=a0a7b1664c5339f36e97a296230dced6c4500dfb;hb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;hp=0000000000000000000000000000000000000000;hpb=98260f3884f4a202f9ca5eabed40b1354c489b29;p=kvmfornfv.git

diff --git a/kernel/drivers/media/dvb-frontends/stv0900_sw.c b/kernel/drivers/media/dvb-frontends/stv0900_sw.c
new file mode 100644
index 000000000..a0a7b1664
--- /dev/null
+++ b/kernel/drivers/media/dvb-frontends/stv0900_sw.c
@@ -0,0 +1,2030 @@
+/*
+ * stv0900_sw.c
+ *
+ * Driver for ST STV0900 satellite demodulator IC.
+ *
+ * Copyright (C) ST Microelectronics.
+ * Copyright (C) 2009 NetUP Inc.
+ * Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
+ *
+ * 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 "stv0900.h"
+#include "stv0900_reg.h"
+#include "stv0900_priv.h"
+
+s32 shiftx(s32 x, int demod, s32 shift)
+{
+	if (demod == 1)
+		return x - shift;
+
+	return x;
+}
+
+int stv0900_check_signal_presence(struct stv0900_internal *intp,
+					enum fe_stv0900_demod_num demod)
+{
+	s32	carr_offset,
+		agc2_integr,
+		max_carrier;
+
+	int no_signal = FALSE;
+
+	carr_offset = (stv0900_read_reg(intp, CFR2) << 8)
+					| stv0900_read_reg(intp, CFR1);
+	carr_offset = ge2comp(carr_offset, 16);
+	agc2_integr = (stv0900_read_reg(intp, AGC2I1) << 8)
+					| stv0900_read_reg(intp, AGC2I0);
+	max_carrier = intp->srch_range[demod] / 1000;
+
+	max_carrier += (max_carrier / 10);
+	max_carrier = 65536 * (max_carrier / 2);
+	max_carrier /= intp->mclk / 1000;
+	if (max_carrier > 0x4000)
+		max_carrier = 0x4000;
+
+	if ((agc2_integr > 0x2000)
+			|| (carr_offset > (2 * max_carrier))
+			|| (carr_offset < (-2 * max_carrier)))
+		no_signal = TRUE;
+
+	return no_signal;
+}
+
+static void stv0900_get_sw_loop_params(struct stv0900_internal *intp,
+				s32 *frequency_inc, s32 *sw_timeout,
+				s32 *steps,
+				enum fe_stv0900_demod_num demod)
+{
+	s32 timeout, freq_inc, max_steps, srate, max_carrier;
+
+	enum fe_stv0900_search_standard	standard;
+
+	srate = intp->symbol_rate[demod];
+	max_carrier = intp->srch_range[demod] / 1000;
+	max_carrier += max_carrier / 10;
+	standard = intp->srch_standard[demod];
+
+	max_carrier = 65536 * (max_carrier / 2);
+	max_carrier /= intp->mclk / 1000;
+
+	if (max_carrier > 0x4000)
+		max_carrier = 0x4000;
+
+	freq_inc = srate;
+	freq_inc /= intp->mclk >> 10;
+	freq_inc = freq_inc << 6;
+
+	switch (standard) {
+	case STV0900_SEARCH_DVBS1:
+	case STV0900_SEARCH_DSS:
+		freq_inc *= 3;
+		timeout = 20;
+		break;
+	case STV0900_SEARCH_DVBS2:
+		freq_inc *= 4;
+		timeout = 25;
+		break;
+	case STV0900_AUTO_SEARCH:
+	default:
+		freq_inc *= 3;
+		timeout = 25;
+		break;
+	}
+
+	freq_inc /= 100;
+
+	if ((freq_inc > max_carrier) || (freq_inc < 0))
+		freq_inc = max_carrier / 2;
+
+	timeout *= 27500;
+
+	if (srate > 0)
+		timeout /= srate / 1000;
+
+	if ((timeout > 100) || (timeout < 0))
+		timeout = 100;
+
+	max_steps = (max_carrier / freq_inc) + 1;
+
+	if ((max_steps > 100) || (max_steps < 0)) {
+		max_steps =  100;
+		freq_inc = max_carrier / max_steps;
+	}
+
+	*frequency_inc = freq_inc;
+	*sw_timeout = timeout;
+	*steps = max_steps;
+
+}
+
+static int stv0900_search_carr_sw_loop(struct stv0900_internal *intp,
+				s32 FreqIncr, s32 Timeout, int zigzag,
+				s32 MaxStep, enum fe_stv0900_demod_num demod)
+{
+	int	no_signal,
+		lock = FALSE;
+	s32	stepCpt,
+		freqOffset,
+		max_carrier;
+
+	max_carrier = intp->srch_range[demod] / 1000;
+	max_carrier += (max_carrier / 10);
+
+	max_carrier = 65536 * (max_carrier / 2);
+	max_carrier /= intp->mclk / 1000;
+
+	if (max_carrier > 0x4000)
+		max_carrier = 0x4000;
+
+	if (zigzag == TRUE)
+		freqOffset = 0;
+	else
+		freqOffset = -max_carrier + FreqIncr;
+
+	stepCpt = 0;
+
+	do {
+		stv0900_write_reg(intp, DMDISTATE, 0x1c);
+		stv0900_write_reg(intp, CFRINIT1, (freqOffset / 256) & 0xff);
+		stv0900_write_reg(intp, CFRINIT0, freqOffset & 0xff);
+		stv0900_write_reg(intp, DMDISTATE, 0x18);
+		stv0900_write_bits(intp, ALGOSWRST, 1);
+
+		if (intp->chip_id == 0x12) {
+			stv0900_write_bits(intp, RST_HWARE, 1);
+			stv0900_write_bits(intp, RST_HWARE, 0);
+		}
+
+		if (zigzag == TRUE) {
+			if (freqOffset >= 0)
+				freqOffset = -freqOffset - 2 * FreqIncr;
+			else
+				freqOffset = -freqOffset;
+		} else
+			freqOffset += + 2 * FreqIncr;
+
+		stepCpt++;
+		lock = stv0900_get_demod_lock(intp, demod, Timeout);
+		no_signal = stv0900_check_signal_presence(intp, demod);
+
+	} while ((lock == FALSE)
+			&& (no_signal == FALSE)
+			&& ((freqOffset - FreqIncr) <  max_carrier)
+			&& ((freqOffset + FreqIncr) > -max_carrier)
+			&& (stepCpt < MaxStep));
+
+	stv0900_write_bits(intp, ALGOSWRST, 0);
+
+	return lock;
+}
+
+static int stv0900_sw_algo(struct stv0900_internal *intp,
+				enum fe_stv0900_demod_num demod)
+{
+	int	lock = FALSE,
+		no_signal,
+		zigzag;
+	s32	s2fw,
+		fqc_inc,
+		sft_stp_tout,
+		trial_cntr,
+		max_steps;
+
+	stv0900_get_sw_loop_params(intp, &fqc_inc, &sft_stp_tout,
+					&max_steps, demod);
+	switch (intp->srch_standard[demod]) {
+	case STV0900_SEARCH_DVBS1:
+	case STV0900_SEARCH_DSS:
+		if (intp->chip_id >= 0x20)
+			stv0900_write_reg(intp, CARFREQ, 0x3b);
+		else
+			stv0900_write_reg(intp, CARFREQ, 0xef);
+
+		stv0900_write_reg(intp, DMDCFGMD, 0x49);
+		zigzag = FALSE;
+		break;
+	case STV0900_SEARCH_DVBS2:
+		if (intp->chip_id >= 0x20)
+			stv0900_write_reg(intp, CORRELABS, 0x79);
+		else
+			stv0900_write_reg(intp, CORRELABS, 0x68);
+
+		stv0900_write_reg(intp, DMDCFGMD, 0x89);
+
+		zigzag = TRUE;
+		break;
+	case STV0900_AUTO_SEARCH:
+	default:
+		if (intp->chip_id >= 0x20) {
+			stv0900_write_reg(intp, CARFREQ, 0x3b);
+			stv0900_write_reg(intp, CORRELABS, 0x79);
+		} else {
+			stv0900_write_reg(intp, CARFREQ, 0xef);
+			stv0900_write_reg(intp, CORRELABS, 0x68);
+		}
+
+		stv0900_write_reg(intp, DMDCFGMD, 0xc9);
+		zigzag = FALSE;
+		break;
+	}
+
+	trial_cntr = 0;
+	do {
+		lock = stv0900_search_carr_sw_loop(intp,
+						fqc_inc,
+						sft_stp_tout,
+						zigzag,
+						max_steps,
+						demod);
+		no_signal = stv0900_check_signal_presence(intp, demod);
+		trial_cntr++;
+		if ((lock == TRUE)
+				|| (no_signal == TRUE)
+				|| (trial_cntr == 2)) {
+
+			if (intp->chip_id >= 0x20) {
+				stv0900_write_reg(intp, CARFREQ, 0x49);
+				stv0900_write_reg(intp, CORRELABS, 0x9e);
+			} else {
+				stv0900_write_reg(intp, CARFREQ, 0xed);
+				stv0900_write_reg(intp, CORRELABS, 0x88);
+			}
+
+			if ((stv0900_get_bits(intp, HEADER_MODE) ==
+						STV0900_DVBS2_FOUND) &&
+							(lock == TRUE)) {
+				msleep(sft_stp_tout);
+				s2fw = stv0900_get_bits(intp, FLYWHEEL_CPT);
+
+				if (s2fw < 0xd) {
+					msleep(sft_stp_tout);
+					s2fw = stv0900_get_bits(intp,
+								FLYWHEEL_CPT);
+				}
+
+				if (s2fw < 0xd) {
+					lock = FALSE;
+
+					if (trial_cntr < 2) {
+						if (intp->chip_id >= 0x20)
+							stv0900_write_reg(intp,
+								CORRELABS,
+								0x79);
+						else
+							stv0900_write_reg(intp,
+								CORRELABS,
+								0x68);
+
+						stv0900_write_reg(intp,
+								DMDCFGMD,
+								0x89);
+					}
+				}
+			}
+		}
+
+	} while ((lock == FALSE)
+		&& (trial_cntr < 2)
+		&& (no_signal == FALSE));
+
+	return lock;
+}
+
+static u32 stv0900_get_symbol_rate(struct stv0900_internal *intp,
+					u32 mclk,
+					enum fe_stv0900_demod_num demod)
+{
+	s32	rem1, rem2, intval1, intval2, srate;
+
+	srate = (stv0900_get_bits(intp, SYMB_FREQ3) << 24) +
+		(stv0900_get_bits(intp, SYMB_FREQ2) << 16) +
+		(stv0900_get_bits(intp, SYMB_FREQ1) << 8) +
+		(stv0900_get_bits(intp, SYMB_FREQ0));
+	dprintk("lock: srate=%d r0=0x%x r1=0x%x r2=0x%x r3=0x%x \n",
+		srate, stv0900_get_bits(intp, SYMB_FREQ0),
+		stv0900_get_bits(intp, SYMB_FREQ1),
+		stv0900_get_bits(intp, SYMB_FREQ2),
+		stv0900_get_bits(intp, SYMB_FREQ3));
+
+	intval1 = (mclk) >> 16;
+	intval2 = (srate) >> 16;
+
+	rem1 = (mclk) % 0x10000;
+	rem2 = (srate) % 0x10000;
+	srate =	(intval1 * intval2) +
+		((intval1 * rem2) >> 16) +
+		((intval2 * rem1) >> 16);
+
+	return srate;
+}
+
+static void stv0900_set_symbol_rate(struct stv0900_internal *intp,
+					u32 mclk, u32 srate,
+					enum fe_stv0900_demod_num demod)
+{
+	u32 symb;
+
+	dprintk("%s: Mclk %d, SR %d, Dmd %d\n", __func__, mclk,
+							srate, demod);
+
+	if (srate > 60000000) {
+		symb = srate << 4;
+		symb /= (mclk >> 12);
+	} else if (srate > 6000000) {
+		symb = srate << 6;
+		symb /= (mclk >> 10);
+	} else {
+		symb = srate << 9;
+		symb /= (mclk >> 7);
+	}
+
+	stv0900_write_reg(intp, SFRINIT1, (symb >> 8) & 0x7f);
+	stv0900_write_reg(intp, SFRINIT1 + 1, (symb & 0xff));
+}
+
+static void stv0900_set_max_symbol_rate(struct stv0900_internal *intp,
+					u32 mclk, u32 srate,
+					enum fe_stv0900_demod_num demod)
+{
+	u32 symb;
+
+	srate = 105 * (srate / 100);
+
+	if (srate > 60000000) {
+		symb = srate << 4;
+		symb /= (mclk >> 12);
+	} else if (srate > 6000000) {
+		symb = srate << 6;
+		symb /= (mclk >> 10);
+	} else {
+		symb = srate << 9;
+		symb /= (mclk >> 7);
+	}
+
+	if (symb < 0x7fff) {
+		stv0900_write_reg(intp, SFRUP1, (symb >> 8) & 0x7f);
+		stv0900_write_reg(intp, SFRUP1 + 1, (symb & 0xff));
+	} else {
+		stv0900_write_reg(intp, SFRUP1, 0x7f);
+		stv0900_write_reg(intp, SFRUP1 + 1, 0xff);
+	}
+}
+
+static void stv0900_set_min_symbol_rate(struct stv0900_internal *intp,
+					u32 mclk, u32 srate,
+					enum fe_stv0900_demod_num demod)
+{
+	u32	symb;
+
+	srate = 95 * (srate / 100);
+	if (srate > 60000000) {
+		symb = srate << 4;
+		symb /= (mclk >> 12);
+
+	} else if (srate > 6000000) {
+		symb = srate << 6;
+		symb /= (mclk >> 10);
+
+	} else {
+		symb = srate << 9;
+		symb /= (mclk >> 7);
+	}
+
+	stv0900_write_reg(intp, SFRLOW1, (symb >> 8) & 0xff);
+	stv0900_write_reg(intp, SFRLOW1 + 1, (symb & 0xff));
+}
+
+static s32 stv0900_get_timing_offst(struct stv0900_internal *intp,
+					u32 srate,
+					enum fe_stv0900_demod_num demod)
+{
+	s32 timingoffset;
+
+
+	timingoffset = (stv0900_read_reg(intp, TMGREG2) << 16) +
+		       (stv0900_read_reg(intp, TMGREG2 + 1) << 8) +
+		       (stv0900_read_reg(intp, TMGREG2 + 2));
+
+	timingoffset = ge2comp(timingoffset, 24);
+
+
+	if (timingoffset == 0)
+		timingoffset = 1;
+
+	timingoffset = ((s32)srate * 10) / ((s32)0x1000000 / timingoffset);
+	timingoffset /= 320;
+
+	return timingoffset;
+}
+
+static void stv0900_set_dvbs2_rolloff(struct stv0900_internal *intp,
+					enum fe_stv0900_demod_num demod)
+{
+	s32 rolloff;
+
+	if (intp->chip_id == 0x10) {
+		stv0900_write_bits(intp, MANUALSX_ROLLOFF, 1);
+		rolloff = stv0900_read_reg(intp, MATSTR1) & 0x03;
+		stv0900_write_bits(intp, ROLLOFF_CONTROL, rolloff);
+	} else if (intp->chip_id <= 0x20)
+		stv0900_write_bits(intp, MANUALSX_ROLLOFF, 0);
+	else /* cut 3.0 */
+		stv0900_write_bits(intp, MANUALS2_ROLLOFF, 0);
+}
+
+static u32 stv0900_carrier_width(u32 srate, enum fe_stv0900_rolloff ro)
+{
+	u32 rolloff;
+
+	switch (ro) {
+	case STV0900_20:
+		rolloff = 20;
+		break;
+	case STV0900_25:
+		rolloff = 25;
+		break;
+	case STV0900_35:
+	default:
+		rolloff = 35;
+		break;
+	}
+
+	return srate  + (srate * rolloff) / 100;
+}
+
+static int stv0900_check_timing_lock(struct stv0900_internal *intp,
+				enum fe_stv0900_demod_num demod)
+{
+	int timingLock = FALSE;
+	s32	i,
+		timingcpt = 0;
+	u8	car_freq,
+		tmg_th_high,
+		tmg_th_low;
+
+	car_freq = stv0900_read_reg(intp, CARFREQ);
+	tmg_th_high = stv0900_read_reg(intp, TMGTHRISE);
+	tmg_th_low = stv0900_read_reg(intp, TMGTHFALL);
+	stv0900_write_reg(intp, TMGTHRISE, 0x20);
+	stv0900_write_reg(intp, TMGTHFALL, 0x0);
+	stv0900_write_bits(intp, CFR_AUTOSCAN, 0);
+	stv0900_write_reg(intp, RTC, 0x80);
+	stv0900_write_reg(intp, RTCS2, 0x40);
+	stv0900_write_reg(intp, CARFREQ, 0x0);
+	stv0900_write_reg(intp, CFRINIT1, 0x0);
+	stv0900_write_reg(intp, CFRINIT0, 0x0);
+	stv0900_write_reg(intp, AGC2REF, 0x65);
+	stv0900_write_reg(intp, DMDISTATE, 0x18);
+	msleep(7);
+
+	for (i = 0; i < 10; i++) {
+		if (stv0900_get_bits(intp, TMGLOCK_QUALITY) >= 2)
+			timingcpt++;
+
+		msleep(1);
+	}
+
+	if (timingcpt >= 3)
+		timingLock = TRUE;
+
+	stv0900_write_reg(intp, AGC2REF, 0x38);
+	stv0900_write_reg(intp, RTC, 0x88);
+	stv0900_write_reg(intp, RTCS2, 0x68);
+	stv0900_write_reg(intp, CARFREQ, car_freq);
+	stv0900_write_reg(intp, TMGTHRISE, tmg_th_high);
+	stv0900_write_reg(intp, TMGTHFALL, tmg_th_low);
+
+	return	timingLock;
+}
+
+static int stv0900_get_demod_cold_lock(struct dvb_frontend *fe,
+					s32 demod_timeout)
+{
+	struct stv0900_state *state = fe->demodulator_priv;
+	struct stv0900_internal *intp = state->internal;
+	enum fe_stv0900_demod_num demod = state->demod;
+	int	lock = FALSE,
+		d = demod;
+	s32	srate,
+		search_range,
+		locktimeout,
+		currier_step,
+		nb_steps,
+		current_step,
+		direction,
+		tuner_freq,
+		timeout,
+		freq;
+
+	srate = intp->symbol_rate[d];
+	search_range = intp->srch_range[d];
+
+	if (srate >= 10000000)
+		locktimeout = demod_timeout / 3;
+	else
+		locktimeout = demod_timeout / 2;
+
+	lock = stv0900_get_demod_lock(intp, d, locktimeout);
+
+	if (lock != FALSE)
+		return lock;
+
+	if (srate >= 10000000) {
+		if (stv0900_check_timing_lock(intp, d) == TRUE) {
+			stv0900_write_reg(intp, DMDISTATE, 0x1f);
+			stv0900_write_reg(intp, DMDISTATE, 0x15);
+			lock = stv0900_get_demod_lock(intp, d, demod_timeout);
+		} else
+			lock = FALSE;
+
+		return lock;
+	}
+
+	if (intp->chip_id <= 0x20) {
+		if (srate <= 1000000)
+			currier_step = 500;
+		else if (srate <= 4000000)
+			currier_step = 1000;
+		else if (srate <= 7000000)
+			currier_step = 2000;
+		else if (srate <= 10000000)
+			currier_step = 3000;
+		else
+			currier_step = 5000;
+
+		if (srate >= 2000000) {
+			timeout = (demod_timeout / 3);
+			if (timeout > 1000)
+				timeout = 1000;
+		} else
+			timeout = (demod_timeout / 2);
+	} else {
+		/*cut 3.0 */
+		currier_step = srate / 4000;
+		timeout = (demod_timeout * 3) / 4;
+	}
+
+	nb_steps = ((search_range / 1000) / currier_step);
+
+	if ((nb_steps % 2) != 0)
+		nb_steps += 1;
+
+	if (nb_steps <= 0)
+		nb_steps = 2;
+	else if (nb_steps > 12)
+		nb_steps = 12;
+
+	current_step = 1;
+	direction = 1;
+
+	if (intp->chip_id <= 0x20) {
+		tuner_freq = intp->freq[d];
+		intp->bw[d] = stv0900_carrier_width(intp->symbol_rate[d],
+				intp->rolloff) + intp->symbol_rate[d];
+	} else
+		tuner_freq = 0;
+
+	while ((current_step <= nb_steps) && (lock == FALSE)) {
+		if (direction > 0)
+			tuner_freq += (current_step * currier_step);
+		else
+			tuner_freq -= (current_step * currier_step);
+
+		if (intp->chip_id <= 0x20) {
+			if (intp->tuner_type[d] == 3)
+				stv0900_set_tuner_auto(intp, tuner_freq,
+						intp->bw[d], demod);
+			else
+				stv0900_set_tuner(fe, tuner_freq, intp->bw[d]);
+
+			stv0900_write_reg(intp, DMDISTATE, 0x1c);
+			stv0900_write_reg(intp, CFRINIT1, 0);
+			stv0900_write_reg(intp, CFRINIT0, 0);
+			stv0900_write_reg(intp, DMDISTATE, 0x1f);
+			stv0900_write_reg(intp, DMDISTATE, 0x15);
+		} else {
+			stv0900_write_reg(intp, DMDISTATE, 0x1c);
+			freq = (tuner_freq * 65536) / (intp->mclk / 1000);
+			stv0900_write_bits(intp, CFR_INIT1, MSB(freq));
+			stv0900_write_bits(intp, CFR_INIT0, LSB(freq));
+			stv0900_write_reg(intp, DMDISTATE, 0x1f);
+			stv0900_write_reg(intp, DMDISTATE, 0x05);
+		}
+
+		lock = stv0900_get_demod_lock(intp, d, timeout);
+		direction *= -1;
+		current_step++;
+	}
+
+	return	lock;
+}
+
+static void stv0900_get_lock_timeout(s32 *demod_timeout, s32 *fec_timeout,
+					s32 srate,
+					enum fe_stv0900_search_algo algo)
+{
+	switch (algo) {
+	case STV0900_BLIND_SEARCH:
+		if (srate <= 1500000) {
+			(*demod_timeout) = 1500;
+			(*fec_timeout) = 400;
+		} else if (srate <= 5000000) {
+			(*demod_timeout) = 1000;
+			(*fec_timeout) = 300;
+		} else {
+			(*demod_timeout) = 700;
+			(*fec_timeout) = 100;
+		}
+
+		break;
+	case STV0900_COLD_START:
+	case STV0900_WARM_START:
+	default:
+		if (srate <= 1000000) {
+			(*demod_timeout) = 3000;
+			(*fec_timeout) = 1700;
+		} else if (srate <= 2000000) {
+			(*demod_timeout) = 2500;
+			(*fec_timeout) = 1100;
+		} else if (srate <= 5000000) {
+			(*demod_timeout) = 1000;
+			(*fec_timeout) = 550;
+		} else if (srate <= 10000000) {
+			(*demod_timeout) = 700;
+			(*fec_timeout) = 250;
+		} else if (srate <= 20000000) {
+			(*demod_timeout) = 400;
+			(*fec_timeout) = 130;
+		} else {
+			(*demod_timeout) = 300;
+			(*fec_timeout) = 100;
+		}
+
+		break;
+
+	}
+
+	if (algo == STV0900_WARM_START)
+		(*demod_timeout) /= 2;
+}
+
+static void stv0900_set_viterbi_tracq(struct stv0900_internal *intp,
+					enum fe_stv0900_demod_num demod)
+{
+
+	s32 vth_reg = VTH12;
+
+	dprintk("%s\n", __func__);
+
+	stv0900_write_reg(intp, vth_reg++, 0xd0);
+	stv0900_write_reg(intp, vth_reg++, 0x7d);
+	stv0900_write_reg(intp, vth_reg++, 0x53);
+	stv0900_write_reg(intp, vth_reg++, 0x2f);
+	stv0900_write_reg(intp, vth_reg++, 0x24);
+	stv0900_write_reg(intp, vth_reg++, 0x1f);
+}
+
+static void stv0900_set_viterbi_standard(struct stv0900_internal *intp,
+				   enum fe_stv0900_search_standard standard,
+				   enum fe_stv0900_fec fec,
+				   enum fe_stv0900_demod_num demod)
+{
+	dprintk("%s: ViterbiStandard = ", __func__);
+
+	switch (standard) {
+	case STV0900_AUTO_SEARCH:
+		dprintk("Auto\n");
+		stv0900_write_reg(intp, FECM, 0x10);
+		stv0900_write_reg(intp, PRVIT, 0x3f);
+		break;
+	case STV0900_SEARCH_DVBS1:
+		dprintk("DVBS1\n");
+		stv0900_write_reg(intp, FECM, 0x00);
+		switch (fec) {
+		case STV0900_FEC_UNKNOWN:
+		default:
+			stv0900_write_reg(intp, PRVIT, 0x2f);
+			break;
+		case STV0900_FEC_1_2:
+			stv0900_write_reg(intp, PRVIT, 0x01);
+			break;
+		case STV0900_FEC_2_3:
+			stv0900_write_reg(intp, PRVIT, 0x02);
+			break;
+		case STV0900_FEC_3_4:
+			stv0900_write_reg(intp, PRVIT, 0x04);
+			break;
+		case STV0900_FEC_5_6:
+			stv0900_write_reg(intp, PRVIT, 0x08);
+			break;
+		case STV0900_FEC_7_8:
+			stv0900_write_reg(intp, PRVIT, 0x20);
+			break;
+		}
+
+		break;
+	case STV0900_SEARCH_DSS:
+		dprintk("DSS\n");
+		stv0900_write_reg(intp, FECM, 0x80);
+		switch (fec) {
+		case STV0900_FEC_UNKNOWN:
+		default:
+			stv0900_write_reg(intp, PRVIT, 0x13);
+			break;
+		case STV0900_FEC_1_2:
+			stv0900_write_reg(intp, PRVIT, 0x01);
+			break;
+		case STV0900_FEC_2_3:
+			stv0900_write_reg(intp, PRVIT, 0x02);
+			break;
+		case STV0900_FEC_6_7:
+			stv0900_write_reg(intp, PRVIT, 0x10);
+			break;
+		}
+		break;
+	default:
+		break;
+	}
+}
+
+static enum fe_stv0900_fec stv0900_get_vit_fec(struct stv0900_internal *intp,
+						enum fe_stv0900_demod_num demod)
+{
+	enum fe_stv0900_fec prate;
+	s32 rate_fld = stv0900_get_bits(intp, VIT_CURPUN);
+
+	switch (rate_fld) {
+	case 13:
+		prate = STV0900_FEC_1_2;
+		break;
+	case 18:
+		prate = STV0900_FEC_2_3;
+		break;
+	case 21:
+		prate = STV0900_FEC_3_4;
+		break;
+	case 24:
+		prate = STV0900_FEC_5_6;
+		break;
+	case 25:
+		prate = STV0900_FEC_6_7;
+		break;
+	case 26:
+		prate = STV0900_FEC_7_8;
+		break;
+	default:
+		prate = STV0900_FEC_UNKNOWN;
+		break;
+	}
+
+	return prate;
+}
+
+static void stv0900_set_dvbs1_track_car_loop(struct stv0900_internal *intp,
+					enum fe_stv0900_demod_num demod,
+					u32 srate)
+{
+	if (intp->chip_id >= 0x30) {
+		if (srate >= 15000000) {
+			stv0900_write_reg(intp, ACLC, 0x2b);
+			stv0900_write_reg(intp, BCLC, 0x1a);
+		} else if ((srate >= 7000000) && (15000000 > srate)) {
+			stv0900_write_reg(intp, ACLC, 0x0c);
+			stv0900_write_reg(intp, BCLC, 0x1b);
+		} else if (srate < 7000000) {
+			stv0900_write_reg(intp, ACLC, 0x2c);
+			stv0900_write_reg(intp, BCLC, 0x1c);
+		}
+
+	} else { /*cut 2.0 and 1.x*/
+		stv0900_write_reg(intp, ACLC, 0x1a);
+		stv0900_write_reg(intp, BCLC, 0x09);
+	}
+
+}
+
+static void stv0900_track_optimization(struct dvb_frontend *fe)
+{
+	struct stv0900_state *state = fe->demodulator_priv;
+	struct stv0900_internal *intp = state->internal;
+	enum fe_stv0900_demod_num demod = state->demod;
+
+	s32	srate,
+		pilots,
+		aclc,
+		freq1,
+		freq0,
+		i = 0,
+		timed,
+		timef,
+		blind_tun_sw = 0,
+		modulation;
+
+	enum fe_stv0900_modcode foundModcod;
+
+	dprintk("%s\n", __func__);
+
+	srate = stv0900_get_symbol_rate(intp, intp->mclk, demod);
+	srate += stv0900_get_timing_offst(intp, srate, demod);
+
+	switch (intp->result[demod].standard) {
+	case STV0900_DVBS1_STANDARD:
+	case STV0900_DSS_STANDARD:
+		dprintk("%s: found DVB-S or DSS\n", __func__);
+		if (intp->srch_standard[demod] == STV0900_AUTO_SEARCH) {
+			stv0900_write_bits(intp, DVBS1_ENABLE, 1);
+			stv0900_write_bits(intp, DVBS2_ENABLE, 0);
+		}
+
+		stv0900_write_bits(intp, ROLLOFF_CONTROL, intp->rolloff);
+		stv0900_write_bits(intp, MANUALSX_ROLLOFF, 1);
+
+		if (intp->chip_id < 0x30) {
+			stv0900_write_reg(intp, ERRCTRL1, 0x75);
+			break;
+		}
+
+		if (stv0900_get_vit_fec(intp, demod) == STV0900_FEC_1_2) {
+			stv0900_write_reg(intp, GAUSSR0, 0x98);
+			stv0900_write_reg(intp, CCIR0, 0x18);
+		} else {
+			stv0900_write_reg(intp, GAUSSR0, 0x18);
+			stv0900_write_reg(intp, CCIR0, 0x18);
+		}
+
+		stv0900_write_reg(intp, ERRCTRL1, 0x75);
+		break;
+	case STV0900_DVBS2_STANDARD:
+		dprintk("%s: found DVB-S2\n", __func__);
+		stv0900_write_bits(intp, DVBS1_ENABLE, 0);
+		stv0900_write_bits(intp, DVBS2_ENABLE, 1);
+		stv0900_write_reg(intp, ACLC, 0);
+		stv0900_write_reg(intp, BCLC, 0);
+		if (intp->result[demod].frame_len == STV0900_LONG_FRAME) {
+			foundModcod = stv0900_get_bits(intp, DEMOD_MODCOD);
+			pilots = stv0900_get_bits(intp, DEMOD_TYPE) & 0x01;
+			aclc = stv0900_get_optim_carr_loop(srate,
+							foundModcod,
+							pilots,
+							intp->chip_id);
+			if (foundModcod <= STV0900_QPSK_910)
+				stv0900_write_reg(intp, ACLC2S2Q, aclc);
+			else if (foundModcod <= STV0900_8PSK_910) {
+				stv0900_write_reg(intp, ACLC2S2Q, 0x2a);
+				stv0900_write_reg(intp, ACLC2S28, aclc);
+			}
+
+			if ((intp->demod_mode == STV0900_SINGLE) &&
+					(foundModcod > STV0900_8PSK_910)) {
+				if (foundModcod <= STV0900_16APSK_910) {
+					stv0900_write_reg(intp, ACLC2S2Q, 0x2a);
+					stv0900_write_reg(intp, ACLC2S216A,
+									aclc);
+				} else if (foundModcod <= STV0900_32APSK_910) {
+					stv0900_write_reg(intp, ACLC2S2Q, 0x2a);
+					stv0900_write_reg(intp,	ACLC2S232A,
+									aclc);
+				}
+			}
+
+		} else {
+			modulation = intp->result[demod].modulation;
+			aclc = stv0900_get_optim_short_carr_loop(srate,
+					modulation, intp->chip_id);
+			if (modulation == STV0900_QPSK)
+				stv0900_write_reg(intp, ACLC2S2Q, aclc);
+			else if (modulation == STV0900_8PSK) {
+				stv0900_write_reg(intp, ACLC2S2Q, 0x2a);
+				stv0900_write_reg(intp, ACLC2S28, aclc);
+			} else if (modulation == STV0900_16APSK) {
+				stv0900_write_reg(intp, ACLC2S2Q, 0x2a);
+				stv0900_write_reg(intp, ACLC2S216A, aclc);
+			} else if (modulation == STV0900_32APSK) {
+				stv0900_write_reg(intp, ACLC2S2Q, 0x2a);
+				stv0900_write_reg(intp, ACLC2S232A, aclc);
+			}
+
+		}
+
+		if (intp->chip_id <= 0x11) {
+			if (intp->demod_mode != STV0900_SINGLE)
+				stv0900_activate_s2_modcod(intp, demod);
+
+		}
+
+		stv0900_write_reg(intp, ERRCTRL1, 0x67);
+		break;
+	case STV0900_UNKNOWN_STANDARD:
+	default:
+		dprintk("%s: found unknown standard\n", __func__);
+		stv0900_write_bits(intp, DVBS1_ENABLE, 1);
+		stv0900_write_bits(intp, DVBS2_ENABLE, 1);
+		break;
+	}
+
+	freq1 = stv0900_read_reg(intp, CFR2);
+	freq0 = stv0900_read_reg(intp, CFR1);
+	if (intp->srch_algo[demod] == STV0900_BLIND_SEARCH) {
+		stv0900_write_reg(intp, SFRSTEP, 0x00);
+		stv0900_write_bits(intp, SCAN_ENABLE, 0);
+		stv0900_write_bits(intp, CFR_AUTOSCAN, 0);
+		stv0900_write_reg(intp, TMGCFG2, 0xc1);
+		stv0900_set_symbol_rate(intp, intp->mclk, srate, demod);
+		blind_tun_sw = 1;
+		if (intp->result[demod].standard != STV0900_DVBS2_STANDARD)
+			stv0900_set_dvbs1_track_car_loop(intp, demod, srate);
+
+	}
+
+	if (intp->chip_id >= 0x20) {
+		if ((intp->srch_standard[demod] == STV0900_SEARCH_DVBS1) ||
+				(intp->srch_standard[demod] ==
+							STV0900_SEARCH_DSS) ||
+				(intp->srch_standard[demod] ==
+							STV0900_AUTO_SEARCH)) {
+			stv0900_write_reg(intp, VAVSRVIT, 0x0a);
+			stv0900_write_reg(intp, VITSCALE, 0x0);
+		}
+	}
+
+	if (intp->chip_id < 0x20)
+		stv0900_write_reg(intp, CARHDR, 0x08);
+
+	if (intp->chip_id == 0x10)
+		stv0900_write_reg(intp, CORRELEXP, 0x0a);
+
+	stv0900_write_reg(intp, AGC2REF, 0x38);
+
+	if ((intp->chip_id >= 0x20) ||
+			(blind_tun_sw == 1) ||
+			(intp->symbol_rate[demod] < 10000000)) {
+		stv0900_write_reg(intp, CFRINIT1, freq1);
+		stv0900_write_reg(intp, CFRINIT0, freq0);
+		intp->bw[demod] = stv0900_carrier_width(srate,
+					intp->rolloff) + 10000000;
+
+		if ((intp->chip_id >= 0x20) || (blind_tun_sw == 1)) {
+			if (intp->srch_algo[demod] != STV0900_WARM_START) {
+				if (intp->tuner_type[demod] == 3)
+					stv0900_set_tuner_auto(intp,
+							intp->freq[demod],
+							intp->bw[demod],
+							demod);
+				else
+					stv0900_set_bandwidth(fe,
+							intp->bw[demod]);
+			}
+		}
+
+		if ((intp->srch_algo[demod] == STV0900_BLIND_SEARCH) ||
+				(intp->symbol_rate[demod] < 10000000))
+			msleep(50);
+		else
+			msleep(5);
+
+		stv0900_get_lock_timeout(&timed, &timef, srate,
+						STV0900_WARM_START);
+
+		if (stv0900_get_demod_lock(intp, demod, timed / 2) == FALSE) {
+			stv0900_write_reg(intp, DMDISTATE, 0x1f);
+			stv0900_write_reg(intp, CFRINIT1, freq1);
+			stv0900_write_reg(intp, CFRINIT0, freq0);
+			stv0900_write_reg(intp, DMDISTATE, 0x18);
+			i = 0;
+			while ((stv0900_get_demod_lock(intp,
+							demod,
+							timed / 2) == FALSE) &&
+						(i <= 2)) {
+				stv0900_write_reg(intp, DMDISTATE, 0x1f);
+				stv0900_write_reg(intp, CFRINIT1, freq1);
+				stv0900_write_reg(intp, CFRINIT0, freq0);
+				stv0900_write_reg(intp, DMDISTATE, 0x18);
+				i++;
+			}
+		}
+
+	}
+
+	if (intp->chip_id >= 0x20)
+		stv0900_write_reg(intp, CARFREQ, 0x49);
+
+	if ((intp->result[demod].standard == STV0900_DVBS1_STANDARD) ||
+			(intp->result[demod].standard == STV0900_DSS_STANDARD))
+		stv0900_set_viterbi_tracq(intp, demod);
+
+}
+
+static int stv0900_get_fec_lock(struct stv0900_internal *intp,
+				enum fe_stv0900_demod_num demod, s32 time_out)
+{
+	s32 timer = 0, lock = 0;
+
+	enum fe_stv0900_search_state dmd_state;
+
+	dprintk("%s\n", __func__);
+
+	dmd_state = stv0900_get_bits(intp, HEADER_MODE);
+
+	while ((timer < time_out) && (lock == 0)) {
+		switch (dmd_state) {
+		case STV0900_SEARCH:
+		case STV0900_PLH_DETECTED:
+		default:
+			lock = 0;
+			break;
+		case STV0900_DVBS2_FOUND:
+			lock = stv0900_get_bits(intp, PKTDELIN_LOCK);
+			break;
+		case STV0900_DVBS_FOUND:
+			lock = stv0900_get_bits(intp, LOCKEDVIT);
+			break;
+		}
+
+		if (lock == 0) {
+			msleep(10);
+			timer += 10;
+		}
+	}
+
+	if (lock)
+		dprintk("%s: DEMOD FEC LOCK OK\n", __func__);
+	else
+		dprintk("%s: DEMOD FEC LOCK FAIL\n", __func__);
+
+	return lock;
+}
+
+static int stv0900_wait_for_lock(struct stv0900_internal *intp,
+				enum fe_stv0900_demod_num demod,
+				s32 dmd_timeout, s32 fec_timeout)
+{
+
+	s32 timer = 0, lock = 0;
+
+	dprintk("%s\n", __func__);
+
+	lock = stv0900_get_demod_lock(intp, demod, dmd_timeout);
+
+	if (lock)
+		lock = stv0900_get_fec_lock(intp, demod, fec_timeout);
+
+	if (lock) {
+		lock = 0;
+
+		dprintk("%s: Timer = %d, time_out = %d\n",
+				__func__, timer, fec_timeout);
+
+		while ((timer < fec_timeout) && (lock == 0)) {
+			lock = stv0900_get_bits(intp, TSFIFO_LINEOK);
+			msleep(1);
+			timer++;
+		}
+	}
+
+	if (lock)
+		dprintk("%s: DEMOD LOCK OK\n", __func__);
+	else
+		dprintk("%s: DEMOD LOCK FAIL\n", __func__);
+
+	if (lock)
+		return TRUE;
+	else
+		return FALSE;
+}
+
+enum fe_stv0900_tracking_standard stv0900_get_standard(struct dvb_frontend *fe,
+						enum fe_stv0900_demod_num demod)
+{
+	struct stv0900_state *state = fe->demodulator_priv;
+	struct stv0900_internal *intp = state->internal;
+	enum fe_stv0900_tracking_standard fnd_standard;
+
+	int hdr_mode = stv0900_get_bits(intp, HEADER_MODE);
+
+	switch (hdr_mode) {
+	case 2:
+		fnd_standard = STV0900_DVBS2_STANDARD;
+		break;
+	case 3:
+		if (stv0900_get_bits(intp, DSS_DVB) == 1)
+			fnd_standard = STV0900_DSS_STANDARD;
+		else
+			fnd_standard = STV0900_DVBS1_STANDARD;
+
+		break;
+	default:
+		fnd_standard = STV0900_UNKNOWN_STANDARD;
+	}
+
+	dprintk("%s: standard %d\n", __func__, fnd_standard);
+
+	return fnd_standard;
+}
+
+static s32 stv0900_get_carr_freq(struct stv0900_internal *intp, u32 mclk,
+					enum fe_stv0900_demod_num demod)
+{
+	s32	derot,
+		rem1,
+		rem2,
+		intval1,
+		intval2;
+
+	derot = (stv0900_get_bits(intp, CAR_FREQ2) << 16) +
+		(stv0900_get_bits(intp, CAR_FREQ1) << 8) +
+		(stv0900_get_bits(intp, CAR_FREQ0));
+
+	derot = ge2comp(derot, 24);
+	intval1 = mclk >> 12;
+	intval2 = derot >> 12;
+	rem1 = mclk % 0x1000;
+	rem2 = derot % 0x1000;
+	derot = (intval1 * intval2) +
+		((intval1 * rem2) >> 12) +
+		((intval2 * rem1) >> 12);
+
+	return derot;
+}
+
+static u32 stv0900_get_tuner_freq(struct dvb_frontend *fe)
+{
+	struct dvb_frontend_ops	*frontend_ops = NULL;
+	struct dvb_tuner_ops *tuner_ops = NULL;
+	u32 freq = 0;
+
+	frontend_ops = &fe->ops;
+	tuner_ops = &frontend_ops->tuner_ops;
+
+	if (tuner_ops->get_frequency) {
+		if ((tuner_ops->get_frequency(fe, &freq)) < 0)
+			dprintk("%s: Invalid parameter\n", __func__);
+		else
+			dprintk("%s: Frequency=%d\n", __func__, freq);
+
+	}
+
+	return freq;
+}
+
+static enum
+fe_stv0900_signal_type stv0900_get_signal_params(struct dvb_frontend *fe)
+{
+	struct stv0900_state *state = fe->demodulator_priv;
+	struct stv0900_internal *intp = state->internal;
+	enum fe_stv0900_demod_num demod = state->demod;
+	enum fe_stv0900_signal_type range = STV0900_OUTOFRANGE;
+	struct stv0900_signal_info *result = &intp->result[demod];
+	s32	offsetFreq,
+		srate_offset;
+	int	i = 0,
+		d = demod;
+
+	u8 timing;
+
+	msleep(5);
+	if (intp->srch_algo[d] == STV0900_BLIND_SEARCH) {
+		timing = stv0900_read_reg(intp, TMGREG2);
+		i = 0;
+		stv0900_write_reg(intp, SFRSTEP, 0x5c);
+
+		while ((i <= 50) && (timing != 0) && (timing != 0xff)) {
+			timing = stv0900_read_reg(intp, TMGREG2);
+			msleep(5);
+			i += 5;
+		}
+	}
+
+	result->standard = stv0900_get_standard(fe, d);
+	if (intp->tuner_type[demod] == 3)
+		result->frequency = stv0900_get_freq_auto(intp, d);
+	else
+		result->frequency = stv0900_get_tuner_freq(fe);
+
+	offsetFreq = stv0900_get_carr_freq(intp, intp->mclk, d) / 1000;
+	result->frequency += offsetFreq;
+	result->symbol_rate = stv0900_get_symbol_rate(intp, intp->mclk, d);
+	srate_offset = stv0900_get_timing_offst(intp, result->symbol_rate, d);
+	result->symbol_rate += srate_offset;
+	result->fec = stv0900_get_vit_fec(intp, d);
+	result->modcode = stv0900_get_bits(intp, DEMOD_MODCOD);
+	result->pilot = stv0900_get_bits(intp, DEMOD_TYPE) & 0x01;
+	result->frame_len = ((u32)stv0900_get_bits(intp, DEMOD_TYPE)) >> 1;
+	result->rolloff = stv0900_get_bits(intp, ROLLOFF_STATUS);
+
+	dprintk("%s: modcode=0x%x \n", __func__, result->modcode);
+
+	switch (result->standard) {
+	case STV0900_DVBS2_STANDARD:
+		result->spectrum = stv0900_get_bits(intp, SPECINV_DEMOD);
+		if (result->modcode <= STV0900_QPSK_910)
+			result->modulation = STV0900_QPSK;
+		else if (result->modcode <= STV0900_8PSK_910)
+			result->modulation = STV0900_8PSK;
+		else if (result->modcode <= STV0900_16APSK_910)
+			result->modulation = STV0900_16APSK;
+		else if (result->modcode <= STV0900_32APSK_910)
+			result->modulation = STV0900_32APSK;
+		else
+			result->modulation = STV0900_UNKNOWN;
+		break;
+	case STV0900_DVBS1_STANDARD:
+	case STV0900_DSS_STANDARD:
+		result->spectrum = stv0900_get_bits(intp, IQINV);
+		result->modulation = STV0900_QPSK;
+		break;
+	default:
+		break;
+	}
+
+	if ((intp->srch_algo[d] == STV0900_BLIND_SEARCH) ||
+				(intp->symbol_rate[d] < 10000000)) {
+		offsetFreq = result->frequency - intp->freq[d];
+		if (intp->tuner_type[demod] == 3)
+			intp->freq[d] = stv0900_get_freq_auto(intp, d);
+		else
+			intp->freq[d] = stv0900_get_tuner_freq(fe);
+
+		if (ABS(offsetFreq) <= ((intp->srch_range[d] / 2000) + 500))
+			range = STV0900_RANGEOK;
+		else if (ABS(offsetFreq) <=
+				(stv0900_carrier_width(result->symbol_rate,
+						result->rolloff) / 2000))
+			range = STV0900_RANGEOK;
+
+	} else if (ABS(offsetFreq) <= ((intp->srch_range[d] / 2000) + 500))
+		range = STV0900_RANGEOK;
+
+	dprintk("%s: range %d\n", __func__, range);
+
+	return range;
+}
+
+static enum
+fe_stv0900_signal_type stv0900_dvbs1_acq_workaround(struct dvb_frontend *fe)
+{
+	struct stv0900_state *state = fe->demodulator_priv;
+	struct stv0900_internal *intp = state->internal;
+	enum fe_stv0900_demod_num demod = state->demod;
+	enum fe_stv0900_signal_type signal_type = STV0900_NODATA;
+
+	s32	srate,
+		demod_timeout,
+		fec_timeout,
+		freq1,
+		freq0;
+
+	intp->result[demod].locked = FALSE;
+
+	if (stv0900_get_bits(intp, HEADER_MODE) == STV0900_DVBS_FOUND) {
+		srate = stv0900_get_symbol_rate(intp, intp->mclk, demod);
+		srate += stv0900_get_timing_offst(intp, srate, demod);
+		if (intp->srch_algo[demod] == STV0900_BLIND_SEARCH)
+			stv0900_set_symbol_rate(intp, intp->mclk, srate, demod);
+
+		stv0900_get_lock_timeout(&demod_timeout, &fec_timeout,
+					srate, STV0900_WARM_START);
+		freq1 = stv0900_read_reg(intp, CFR2);
+		freq0 = stv0900_read_reg(intp, CFR1);
+		stv0900_write_bits(intp, CFR_AUTOSCAN, 0);
+		stv0900_write_bits(intp, SPECINV_CONTROL,
+					STV0900_IQ_FORCE_SWAPPED);
+		stv0900_write_reg(intp, DMDISTATE, 0x1c);
+		stv0900_write_reg(intp, CFRINIT1, freq1);
+		stv0900_write_reg(intp, CFRINIT0, freq0);
+		stv0900_write_reg(intp, DMDISTATE, 0x18);
+		if (stv0900_wait_for_lock(intp, demod,
+				demod_timeout, fec_timeout) == TRUE) {
+			intp->result[demod].locked = TRUE;
+			signal_type = stv0900_get_signal_params(fe);
+			stv0900_track_optimization(fe);
+		} else {
+			stv0900_write_bits(intp, SPECINV_CONTROL,
+					STV0900_IQ_FORCE_NORMAL);
+			stv0900_write_reg(intp, DMDISTATE, 0x1c);
+			stv0900_write_reg(intp, CFRINIT1, freq1);
+			stv0900_write_reg(intp, CFRINIT0, freq0);
+			stv0900_write_reg(intp, DMDISTATE, 0x18);
+			if (stv0900_wait_for_lock(intp, demod,
+					demod_timeout, fec_timeout) == TRUE) {
+				intp->result[demod].locked = TRUE;
+				signal_type = stv0900_get_signal_params(fe);
+				stv0900_track_optimization(fe);
+			}
+
+		}
+
+	} else
+		intp->result[demod].locked = FALSE;
+
+	return signal_type;
+}
+
+static u16 stv0900_blind_check_agc2_min_level(struct stv0900_internal *intp,
+					enum fe_stv0900_demod_num demod)
+{
+	u32 minagc2level = 0xffff,
+		agc2level,
+		init_freq, freq_step;
+
+	s32 i, j, nb_steps, direction;
+
+	dprintk("%s\n", __func__);
+
+	stv0900_write_reg(intp, AGC2REF, 0x38);
+	stv0900_write_bits(intp, SCAN_ENABLE, 0);
+	stv0900_write_bits(intp, CFR_AUTOSCAN, 0);
+
+	stv0900_write_bits(intp, AUTO_GUP, 1);
+	stv0900_write_bits(intp, AUTO_GLOW, 1);
+
+	stv0900_write_reg(intp, DMDT0M, 0x0);
+
+	stv0900_set_symbol_rate(intp, intp->mclk, 1000000, demod);
+	nb_steps = -1 + (intp->srch_range[demod] / 1000000);
+	nb_steps /= 2;
+	nb_steps = (2 * nb_steps) + 1;
+
+	if (nb_steps < 0)
+		nb_steps = 1;
+
+	direction = 1;
+
+	freq_step = (1000000 << 8) / (intp->mclk >> 8);
+
+	init_freq = 0;
+
+	for (i = 0; i < nb_steps; i++) {
+		if (direction > 0)
+			init_freq = init_freq + (freq_step * i);
+		else
+			init_freq = init_freq - (freq_step * i);
+
+		direction *= -1;
+		stv0900_write_reg(intp, DMDISTATE, 0x5C);
+		stv0900_write_reg(intp, CFRINIT1, (init_freq >> 8) & 0xff);
+		stv0900_write_reg(intp, CFRINIT0, init_freq  & 0xff);
+		stv0900_write_reg(intp, DMDISTATE, 0x58);
+		msleep(10);
+		agc2level = 0;
+
+		for (j = 0; j < 10; j++)
+			agc2level += (stv0900_read_reg(intp, AGC2I1) << 8)
+					| stv0900_read_reg(intp, AGC2I0);
+
+		agc2level /= 10;
+
+		if (agc2level < minagc2level)
+			minagc2level = agc2level;
+
+	}
+
+	return (u16)minagc2level;
+}
+
+static u32 stv0900_search_srate_coarse(struct dvb_frontend *fe)
+{
+	struct stv0900_state *state = fe->demodulator_priv;
+	struct stv0900_internal *intp = state->internal;
+	enum fe_stv0900_demod_num demod = state->demod;
+	int timing_lck = FALSE;
+	s32 i, timingcpt = 0,
+		direction = 1,
+		nb_steps,
+		current_step = 0,
+		tuner_freq;
+	u32 agc2_th,
+		coarse_srate = 0,
+		agc2_integr = 0,
+		currier_step = 1200;
+
+	if (intp->chip_id >= 0x30)
+		agc2_th = 0x2e00;
+	else
+		agc2_th = 0x1f00;
+
+	stv0900_write_bits(intp, DEMOD_MODE, 0x1f);
+	stv0900_write_reg(intp, TMGCFG, 0x12);
+	stv0900_write_reg(intp, TMGTHRISE, 0xf0);
+	stv0900_write_reg(intp, TMGTHFALL, 0xe0);
+	stv0900_write_bits(intp, SCAN_ENABLE, 1);
+	stv0900_write_bits(intp, CFR_AUTOSCAN, 1);
+	stv0900_write_reg(intp, SFRUP1, 0x83);
+	stv0900_write_reg(intp, SFRUP0, 0xc0);
+	stv0900_write_reg(intp, SFRLOW1, 0x82);
+	stv0900_write_reg(intp, SFRLOW0, 0xa0);
+	stv0900_write_reg(intp, DMDT0M, 0x0);
+	stv0900_write_reg(intp, AGC2REF, 0x50);
+
+	if (intp->chip_id >= 0x30) {
+		stv0900_write_reg(intp, CARFREQ, 0x99);
+		stv0900_write_reg(intp, SFRSTEP, 0x98);
+	} else if (intp->chip_id >= 0x20) {
+		stv0900_write_reg(intp, CARFREQ, 0x6a);
+		stv0900_write_reg(intp, SFRSTEP, 0x95);
+	} else {
+		stv0900_write_reg(intp, CARFREQ, 0xed);
+		stv0900_write_reg(intp, SFRSTEP, 0x73);
+	}
+
+	if (intp->symbol_rate[demod] <= 2000000)
+		currier_step = 1000;
+	else if (intp->symbol_rate[demod] <= 5000000)
+		currier_step = 2000;
+	else if (intp->symbol_rate[demod] <= 12000000)
+		currier_step = 3000;
+	else
+			currier_step = 5000;
+
+	nb_steps = -1 + ((intp->srch_range[demod] / 1000) / currier_step);
+	nb_steps /= 2;
+	nb_steps = (2 * nb_steps) + 1;
+
+	if (nb_steps < 0)
+		nb_steps = 1;
+	else if (nb_steps > 10) {
+		nb_steps = 11;
+		currier_step = (intp->srch_range[demod] / 1000) / 10;
+	}
+
+	current_step = 0;
+	direction = 1;
+
+	tuner_freq = intp->freq[demod];
+
+	while ((timing_lck == FALSE) && (current_step < nb_steps)) {
+		stv0900_write_reg(intp, DMDISTATE, 0x5f);
+		stv0900_write_bits(intp, DEMOD_MODE, 0);
+
+		msleep(50);
+
+		for (i = 0; i < 10; i++) {
+			if (stv0900_get_bits(intp, TMGLOCK_QUALITY) >= 2)
+				timingcpt++;
+
+			agc2_integr += (stv0900_read_reg(intp, AGC2I1) << 8) |
+					stv0900_read_reg(intp, AGC2I0);
+		}
+
+		agc2_integr /= 10;
+		coarse_srate = stv0900_get_symbol_rate(intp, intp->mclk, demod);
+		current_step++;
+		direction *= -1;
+
+		dprintk("lock: I2C_DEMOD_MODE_FIELD =0. Search started."
+			" tuner freq=%d agc2=0x%x srate_coarse=%d tmg_cpt=%d\n",
+			tuner_freq, agc2_integr, coarse_srate, timingcpt);
+
+		if ((timingcpt >= 5) &&
+				(agc2_integr < agc2_th) &&
+				(coarse_srate < 55000000) &&
+				(coarse_srate > 850000))
+			timing_lck = TRUE;
+		else if (current_step < nb_steps) {
+			if (direction > 0)
+				tuner_freq += (current_step * currier_step);
+			else
+				tuner_freq -= (current_step * currier_step);
+
+			if (intp->tuner_type[demod] == 3)
+				stv0900_set_tuner_auto(intp, tuner_freq,
+						intp->bw[demod], demod);
+			else
+				stv0900_set_tuner(fe, tuner_freq,
+						intp->bw[demod]);
+		}
+	}
+
+	if (timing_lck == FALSE)
+		coarse_srate = 0;
+	else
+		coarse_srate = stv0900_get_symbol_rate(intp, intp->mclk, demod);
+
+	return coarse_srate;
+}
+
+static u32 stv0900_search_srate_fine(struct dvb_frontend *fe)
+{
+	struct stv0900_state *state = fe->demodulator_priv;
+	struct stv0900_internal *intp = state->internal;
+	enum fe_stv0900_demod_num demod = state->demod;
+	u32	coarse_srate,
+		coarse_freq,
+		symb,
+		symbmax,
+		symbmin,
+		symbcomp;
+
+	coarse_srate = stv0900_get_symbol_rate(intp, intp->mclk, demod);
+
+	if (coarse_srate > 3000000) {
+		symbmax = 13 * (coarse_srate / 10);
+		symbmax = (symbmax / 1000) * 65536;
+		symbmax /= (intp->mclk / 1000);
+
+		symbmin = 10 * (coarse_srate / 13);
+		symbmin = (symbmin / 1000)*65536;
+		symbmin /= (intp->mclk / 1000);
+
+		symb = (coarse_srate / 1000) * 65536;
+		symb /= (intp->mclk / 1000);
+	} else {
+		symbmax = 13 * (coarse_srate / 10);
+		symbmax = (symbmax / 100) * 65536;
+		symbmax /= (intp->mclk / 100);
+
+		symbmin = 10 * (coarse_srate / 14);
+		symbmin = (symbmin / 100) * 65536;
+		symbmin /= (intp->mclk / 100);
+
+		symb = (coarse_srate / 100) * 65536;
+		symb /= (intp->mclk / 100);
+	}
+
+	symbcomp = 13 * (coarse_srate / 10);
+		coarse_freq = (stv0900_read_reg(intp, CFR2) << 8)
+					| stv0900_read_reg(intp, CFR1);
+
+	if (symbcomp < intp->symbol_rate[demod])
+		coarse_srate = 0;
+	else {
+		stv0900_write_reg(intp, DMDISTATE, 0x1f);
+		stv0900_write_reg(intp, TMGCFG2, 0xc1);
+		stv0900_write_reg(intp, TMGTHRISE, 0x20);
+		stv0900_write_reg(intp, TMGTHFALL, 0x00);
+		stv0900_write_reg(intp, TMGCFG, 0xd2);
+		stv0900_write_bits(intp, CFR_AUTOSCAN, 0);
+		stv0900_write_reg(intp, AGC2REF, 0x38);
+
+		if (intp->chip_id >= 0x30)
+			stv0900_write_reg(intp, CARFREQ, 0x79);
+		else if (intp->chip_id >= 0x20)
+			stv0900_write_reg(intp, CARFREQ, 0x49);
+		else
+			stv0900_write_reg(intp, CARFREQ, 0xed);
+
+		stv0900_write_reg(intp, SFRUP1, (symbmax >> 8) & 0x7f);
+		stv0900_write_reg(intp, SFRUP0, (symbmax & 0xff));
+
+		stv0900_write_reg(intp, SFRLOW1, (symbmin >> 8) & 0x7f);
+		stv0900_write_reg(intp, SFRLOW0, (symbmin & 0xff));
+
+		stv0900_write_reg(intp, SFRINIT1, (symb >> 8) & 0xff);
+		stv0900_write_reg(intp, SFRINIT0, (symb & 0xff));
+
+		stv0900_write_reg(intp, DMDT0M, 0x20);
+		stv0900_write_reg(intp, CFRINIT1, (coarse_freq >> 8) & 0xff);
+		stv0900_write_reg(intp, CFRINIT0, coarse_freq  & 0xff);
+		stv0900_write_reg(intp, DMDISTATE, 0x15);
+	}
+
+	return coarse_srate;
+}
+
+static int stv0900_blind_search_algo(struct dvb_frontend *fe)
+{
+	struct stv0900_state *state = fe->demodulator_priv;
+	struct stv0900_internal *intp = state->internal;
+	enum fe_stv0900_demod_num demod = state->demod;
+	u8	k_ref_tmg,
+		k_ref_tmg_max,
+		k_ref_tmg_min;
+	u32	coarse_srate,
+		agc2_th;
+	int	lock = FALSE,
+		coarse_fail = FALSE;
+	s32	demod_timeout = 500,
+		fec_timeout = 50,
+		fail_cpt,
+		i,
+		agc2_overflow;
+	u16	agc2_int;
+	u8	dstatus2;
+
+	dprintk("%s\n", __func__);
+
+	if (intp->chip_id < 0x20) {
+		k_ref_tmg_max = 233;
+		k_ref_tmg_min = 143;
+	} else {
+		k_ref_tmg_max = 110;
+		k_ref_tmg_min = 10;
+	}
+
+	if (intp->chip_id <= 0x20)
+		agc2_th = STV0900_BLIND_SEARCH_AGC2_TH;
+	else
+		agc2_th = STV0900_BLIND_SEARCH_AGC2_TH_CUT30;
+
+	agc2_int = stv0900_blind_check_agc2_min_level(intp, demod);
+
+	dprintk("%s agc2_int=%d agc2_th=%d \n", __func__, agc2_int, agc2_th);
+	if (agc2_int > agc2_th)
+		return FALSE;
+
+	if (intp->chip_id == 0x10)
+		stv0900_write_reg(intp, CORRELEXP, 0xaa);
+
+	if (intp->chip_id < 0x20)
+		stv0900_write_reg(intp, CARHDR, 0x55);
+	else
+		stv0900_write_reg(intp, CARHDR, 0x20);
+
+	if (intp->chip_id <= 0x20)
+		stv0900_write_reg(intp, CARCFG, 0xc4);
+	else
+		stv0900_write_reg(intp, CARCFG, 0x6);
+
+	stv0900_write_reg(intp, RTCS2, 0x44);
+
+	if (intp->chip_id >= 0x20) {
+		stv0900_write_reg(intp, EQUALCFG, 0x41);
+		stv0900_write_reg(intp, FFECFG, 0x41);
+		stv0900_write_reg(intp, VITSCALE, 0x82);
+		stv0900_write_reg(intp, VAVSRVIT, 0x0);
+	}
+
+	k_ref_tmg = k_ref_tmg_max;
+
+	do {
+		stv0900_write_reg(intp, KREFTMG, k_ref_tmg);
+		if (stv0900_search_srate_coarse(fe) != 0) {
+			coarse_srate = stv0900_search_srate_fine(fe);
+
+			if (coarse_srate != 0) {
+				stv0900_get_lock_timeout(&demod_timeout,
+							&fec_timeout,
+							coarse_srate,
+							STV0900_BLIND_SEARCH);
+				lock = stv0900_get_demod_lock(intp,
+							demod,
+							demod_timeout);
+			} else
+				lock = FALSE;
+		} else {
+			fail_cpt = 0;
+			agc2_overflow = 0;
+
+			for (i = 0; i < 10; i++) {
+				agc2_int = (stv0900_read_reg(intp, AGC2I1) << 8)
+					| stv0900_read_reg(intp, AGC2I0);
+
+				if (agc2_int >= 0xff00)
+					agc2_overflow++;
+
+				dstatus2 = stv0900_read_reg(intp, DSTATUS2);
+
+				if (((dstatus2 & 0x1) == 0x1) &&
+						((dstatus2 >> 7) == 1))
+					fail_cpt++;
+			}
+
+			if ((fail_cpt > 7) || (agc2_overflow > 7))
+				coarse_fail = TRUE;
+
+			lock = FALSE;
+		}
+		k_ref_tmg -= 30;
+	} while ((k_ref_tmg >= k_ref_tmg_min) &&
+				(lock == FALSE) &&
+				(coarse_fail == FALSE));
+
+	return lock;
+}
+
+static void stv0900_set_viterbi_acq(struct stv0900_internal *intp,
+					enum fe_stv0900_demod_num demod)
+{
+	s32 vth_reg = VTH12;
+
+	dprintk("%s\n", __func__);
+
+	stv0900_write_reg(intp, vth_reg++, 0x96);
+	stv0900_write_reg(intp, vth_reg++, 0x64);
+	stv0900_write_reg(intp, vth_reg++, 0x36);
+	stv0900_write_reg(intp, vth_reg++, 0x23);
+	stv0900_write_reg(intp, vth_reg++, 0x1e);
+	stv0900_write_reg(intp, vth_reg++, 0x19);
+}
+
+static void stv0900_set_search_standard(struct stv0900_internal *intp,
+					enum fe_stv0900_demod_num demod)
+{
+
+	dprintk("%s\n", __func__);
+
+	switch (intp->srch_standard[demod]) {
+	case STV0900_SEARCH_DVBS1:
+		dprintk("Search Standard = DVBS1\n");
+		break;
+	case STV0900_SEARCH_DSS:
+		dprintk("Search Standard = DSS\n");
+		break;
+	case STV0900_SEARCH_DVBS2:
+		dprintk("Search Standard = DVBS2\n");
+		break;
+	case STV0900_AUTO_SEARCH:
+	default:
+		dprintk("Search Standard = AUTO\n");
+		break;
+	}
+
+	switch (intp->srch_standard[demod]) {
+	case STV0900_SEARCH_DVBS1:
+	case STV0900_SEARCH_DSS:
+		stv0900_write_bits(intp, DVBS1_ENABLE, 1);
+		stv0900_write_bits(intp, DVBS2_ENABLE, 0);
+		stv0900_write_bits(intp, STOP_CLKVIT, 0);
+		stv0900_set_dvbs1_track_car_loop(intp,
+						demod,
+						intp->symbol_rate[demod]);
+		stv0900_write_reg(intp, CAR2CFG, 0x22);
+
+		stv0900_set_viterbi_acq(intp, demod);
+		stv0900_set_viterbi_standard(intp,
+					intp->srch_standard[demod],
+					intp->fec[demod], demod);
+
+		break;
+	case STV0900_SEARCH_DVBS2:
+		stv0900_write_bits(intp, DVBS1_ENABLE, 0);
+		stv0900_write_bits(intp, DVBS2_ENABLE, 1);
+		stv0900_write_bits(intp, STOP_CLKVIT, 1);
+		stv0900_write_reg(intp, ACLC, 0x1a);
+		stv0900_write_reg(intp, BCLC, 0x09);
+		if (intp->chip_id <= 0x20) /*cut 1.x and 2.0*/
+			stv0900_write_reg(intp, CAR2CFG, 0x26);
+		else
+			stv0900_write_reg(intp, CAR2CFG, 0x66);
+
+		if (intp->demod_mode != STV0900_SINGLE) {
+			if (intp->chip_id <= 0x11)
+				stv0900_stop_all_s2_modcod(intp, demod);
+			else
+				stv0900_activate_s2_modcod(intp, demod);
+
+		} else
+			stv0900_activate_s2_modcod_single(intp, demod);
+
+		stv0900_set_viterbi_tracq(intp, demod);
+
+		break;
+	case STV0900_AUTO_SEARCH:
+	default:
+		stv0900_write_bits(intp, DVBS1_ENABLE, 1);
+		stv0900_write_bits(intp, DVBS2_ENABLE, 1);
+		stv0900_write_bits(intp, STOP_CLKVIT, 0);
+		stv0900_write_reg(intp, ACLC, 0x1a);
+		stv0900_write_reg(intp, BCLC, 0x09);
+		stv0900_set_dvbs1_track_car_loop(intp,
+						demod,
+						intp->symbol_rate[demod]);
+		if (intp->chip_id <= 0x20) /*cut 1.x and 2.0*/
+			stv0900_write_reg(intp, CAR2CFG, 0x26);
+		else
+			stv0900_write_reg(intp, CAR2CFG, 0x66);
+
+		if (intp->demod_mode != STV0900_SINGLE) {
+			if (intp->chip_id <= 0x11)
+				stv0900_stop_all_s2_modcod(intp, demod);
+			else
+				stv0900_activate_s2_modcod(intp, demod);
+
+		} else
+			stv0900_activate_s2_modcod_single(intp, demod);
+
+		stv0900_set_viterbi_tracq(intp, demod);
+		stv0900_set_viterbi_standard(intp,
+						intp->srch_standard[demod],
+						intp->fec[demod], demod);
+
+		break;
+	}
+}
+
+enum fe_stv0900_signal_type stv0900_algo(struct dvb_frontend *fe)
+{
+	struct stv0900_state *state = fe->demodulator_priv;
+	struct stv0900_internal *intp = state->internal;
+	enum fe_stv0900_demod_num demod = state->demod;
+
+	s32 demod_timeout = 500, fec_timeout = 50;
+	s32 aq_power, agc1_power, i;
+
+	int lock = FALSE, low_sr = FALSE;
+
+	enum fe_stv0900_signal_type signal_type = STV0900_NOCARRIER;
+	enum fe_stv0900_search_algo algo;
+	int no_signal = FALSE;
+
+	dprintk("%s\n", __func__);
+
+	algo = intp->srch_algo[demod];
+	stv0900_write_bits(intp, RST_HWARE, 1);
+	stv0900_write_reg(intp, DMDISTATE, 0x5c);
+	if (intp->chip_id >= 0x20) {
+		if (intp->symbol_rate[demod] > 5000000)
+			stv0900_write_reg(intp, CORRELABS, 0x9e);
+		else
+			stv0900_write_reg(intp, CORRELABS, 0x82);
+	} else
+		stv0900_write_reg(intp, CORRELABS, 0x88);
+
+	stv0900_get_lock_timeout(&demod_timeout, &fec_timeout,
+				intp->symbol_rate[demod],
+				intp->srch_algo[demod]);
+
+	if (intp->srch_algo[demod] == STV0900_BLIND_SEARCH) {
+		intp->bw[demod] = 2 * 36000000;
+
+		stv0900_write_reg(intp, TMGCFG2, 0xc0);
+		stv0900_write_reg(intp, CORRELMANT, 0x70);
+
+		stv0900_set_symbol_rate(intp, intp->mclk, 1000000, demod);
+	} else {
+		stv0900_write_reg(intp, DMDT0M, 0x20);
+		stv0900_write_reg(intp, TMGCFG, 0xd2);
+
+		if (intp->symbol_rate[demod] < 2000000)
+			stv0900_write_reg(intp, CORRELMANT, 0x63);
+		else
+			stv0900_write_reg(intp, CORRELMANT, 0x70);
+
+		stv0900_write_reg(intp, AGC2REF, 0x38);
+
+		intp->bw[demod] =
+				stv0900_carrier_width(intp->symbol_rate[demod],
+								intp->rolloff);
+		if (intp->chip_id >= 0x20) {
+			stv0900_write_reg(intp, KREFTMG, 0x5a);
+
+			if (intp->srch_algo[demod] == STV0900_COLD_START) {
+				intp->bw[demod] += 10000000;
+				intp->bw[demod] *= 15;
+				intp->bw[demod] /= 10;
+			} else if (intp->srch_algo[demod] == STV0900_WARM_START)
+				intp->bw[demod] += 10000000;
+
+		} else {
+			stv0900_write_reg(intp, KREFTMG, 0xc1);
+			intp->bw[demod] += 10000000;
+			intp->bw[demod] *= 15;
+			intp->bw[demod] /= 10;
+		}
+
+		stv0900_write_reg(intp, TMGCFG2, 0xc1);
+
+		stv0900_set_symbol_rate(intp, intp->mclk,
+					intp->symbol_rate[demod], demod);
+		stv0900_set_max_symbol_rate(intp, intp->mclk,
+					intp->symbol_rate[demod], demod);
+		stv0900_set_min_symbol_rate(intp, intp->mclk,
+					intp->symbol_rate[demod], demod);
+		if (intp->symbol_rate[demod] >= 10000000)
+			low_sr = FALSE;
+		else
+			low_sr = TRUE;
+
+	}
+
+	if (intp->tuner_type[demod] == 3)
+		stv0900_set_tuner_auto(intp, intp->freq[demod],
+				intp->bw[demod], demod);
+	else
+		stv0900_set_tuner(fe, intp->freq[demod], intp->bw[demod]);
+
+	agc1_power = MAKEWORD(stv0900_get_bits(intp, AGCIQ_VALUE1),
+				stv0900_get_bits(intp, AGCIQ_VALUE0));
+
+	aq_power = 0;
+
+	if (agc1_power == 0) {
+		for (i = 0; i < 5; i++)
+			aq_power += (stv0900_get_bits(intp, POWER_I) +
+					stv0900_get_bits(intp, POWER_Q)) / 2;
+
+		aq_power /= 5;
+	}
+
+	if ((agc1_power == 0) && (aq_power < IQPOWER_THRESHOLD)) {
+		intp->result[demod].locked = FALSE;
+		signal_type = STV0900_NOAGC1;
+		dprintk("%s: NO AGC1, POWERI, POWERQ\n", __func__);
+	} else {
+		stv0900_write_bits(intp, SPECINV_CONTROL,
+					intp->srch_iq_inv[demod]);
+		if (intp->chip_id <= 0x20) /*cut 2.0*/
+			stv0900_write_bits(intp, MANUALSX_ROLLOFF, 1);
+		else /*cut 3.0*/
+			stv0900_write_bits(intp, MANUALS2_ROLLOFF, 1);
+
+		stv0900_set_search_standard(intp, demod);
+
+		if (intp->srch_algo[demod] != STV0900_BLIND_SEARCH)
+			stv0900_start_search(intp, demod);
+	}
+
+	if (signal_type == STV0900_NOAGC1)
+		return signal_type;
+
+	if (intp->chip_id == 0x12) {
+		stv0900_write_bits(intp, RST_HWARE, 0);
+		msleep(3);
+		stv0900_write_bits(intp, RST_HWARE, 1);
+		stv0900_write_bits(intp, RST_HWARE, 0);
+	}
+
+	if (algo == STV0900_BLIND_SEARCH)
+		lock = stv0900_blind_search_algo(fe);
+	else if (algo == STV0900_COLD_START)
+		lock = stv0900_get_demod_cold_lock(fe, demod_timeout);
+	else if (algo == STV0900_WARM_START)
+		lock = stv0900_get_demod_lock(intp, demod, demod_timeout);
+
+	if ((lock == FALSE) && (algo == STV0900_COLD_START)) {
+		if (low_sr == FALSE) {
+			if (stv0900_check_timing_lock(intp, demod) == TRUE)
+				lock = stv0900_sw_algo(intp, demod);
+		}
+	}
+
+	if (lock == TRUE)
+		signal_type = stv0900_get_signal_params(fe);
+
+	if ((lock == TRUE) && (signal_type == STV0900_RANGEOK)) {
+		stv0900_track_optimization(fe);
+		if (intp->chip_id <= 0x11) {
+			if ((stv0900_get_standard(fe, 0) ==
+						STV0900_DVBS1_STANDARD) &&
+			   (stv0900_get_standard(fe, 1) ==
+						STV0900_DVBS1_STANDARD)) {
+				msleep(20);
+				stv0900_write_bits(intp, RST_HWARE, 0);
+			} else {
+				stv0900_write_bits(intp, RST_HWARE, 0);
+				msleep(3);
+				stv0900_write_bits(intp, RST_HWARE, 1);
+				stv0900_write_bits(intp, RST_HWARE, 0);
+			}
+
+		} else if (intp->chip_id >= 0x20) {
+			stv0900_write_bits(intp, RST_HWARE, 0);
+			msleep(3);
+			stv0900_write_bits(intp, RST_HWARE, 1);
+			stv0900_write_bits(intp, RST_HWARE, 0);
+		}
+
+		if (stv0900_wait_for_lock(intp, demod,
+					fec_timeout, fec_timeout) == TRUE) {
+			lock = TRUE;
+			intp->result[demod].locked = TRUE;
+			if (intp->result[demod].standard ==
+						STV0900_DVBS2_STANDARD) {
+				stv0900_set_dvbs2_rolloff(intp, demod);
+				stv0900_write_bits(intp, RESET_UPKO_COUNT, 1);
+				stv0900_write_bits(intp, RESET_UPKO_COUNT, 0);
+				stv0900_write_reg(intp, ERRCTRL1, 0x67);
+			} else {
+				stv0900_write_reg(intp, ERRCTRL1, 0x75);
+			}
+
+			stv0900_write_reg(intp, FBERCPT4, 0);
+			stv0900_write_reg(intp, ERRCTRL2, 0xc1);
+		} else {
+			lock = FALSE;
+			signal_type = STV0900_NODATA;
+			no_signal = stv0900_check_signal_presence(intp, demod);
+
+				intp->result[demod].locked = FALSE;
+		}
+	}
+
+	if ((signal_type != STV0900_NODATA) || (no_signal != FALSE))
+		return signal_type;
+
+	if (intp->chip_id > 0x11) {
+		intp->result[demod].locked = FALSE;
+		return signal_type;
+	}
+
+	if ((stv0900_get_bits(intp, HEADER_MODE) == STV0900_DVBS_FOUND) &&
+	   (intp->srch_iq_inv[demod] <= STV0900_IQ_AUTO_NORMAL_FIRST))
+		signal_type = stv0900_dvbs1_acq_workaround(fe);
+
+	return signal_type;
+}
+