V4L/DVB (10804): Add support for ST STV0900 dual demodulator.

Add last piece of code to support ST STV0900 dual demodulator.
The IC consist of two dependent parts.
It may use single or dual mode.

Signed-off-by: Igor M. Liplianin <liplianin@netup.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

3 files changed, 2856 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/Kconfig b/drivers/media/dvb/frontends/Kconfig
index d3cfced2ce23..a7ea355907b6 100644
--- a/drivers/media/dvb/frontends/Kconfig
+++ b/drivers/media/dvb/frontends/Kconfig
@@ -90,6 +90,13 @@ config DVB_STV6110
 	  help
 	  A DVB-S silicon tuner module. Say Y when you want to support this tuner.
 
+config DVB_STV0900
+	tristate "ST STV0900 based"
+	depends on DVB_CORE && I2C
+	default m if DVB_FE_CUSTOMISE
+	help
+	  A DVB-S/S2 demodulator. Say Y when you want to support this frontend.
+
 config DVB_TDA8083
 	tristate "Philips TDA8083 based"
 	depends on DVB_CORE && I2C
diff --git a/drivers/media/dvb/frontends/Makefile b/drivers/media/dvb/frontends/Makefile
index 1d180fc71023..2231c68291d0 100644
--- a/drivers/media/dvb/frontends/Makefile
+++ b/drivers/media/dvb/frontends/Makefile
@@ -7,6 +7,7 @@ EXTRA_CFLAGS += -Idrivers/media/common/tuners/
 
 s921-objs := s921_module.o s921_core.o
 stb0899-objs = stb0899_drv.o stb0899_algo.o
+stv0900-objs = stv0900_core.o stv0900_sw.o
 
 obj-$(CONFIG_DVB_PLL) += dvb-pll.o
 obj-$(CONFIG_DVB_STV0299) += stv0299.o
@@ -65,4 +66,5 @@ obj-$(CONFIG_DVB_STV0288) += stv0288.o
 obj-$(CONFIG_DVB_STB6000) += stb6000.o
 obj-$(CONFIG_DVB_S921) += s921.o
 obj-$(CONFIG_DVB_STV6110) += stv6110.o
+obj-$(CONFIG_DVB_STV0900) += stv0900.o
 
diff --git a/drivers/media/dvb/frontends/stv0900_sw.c b/drivers/media/dvb/frontends/stv0900_sw.c
new file mode 100644
index 000000000000..a5a31536cbcb
--- /dev/null
+++ b/drivers/media/dvb/frontends/stv0900_sw.c
@@ -0,0 +1,2847 @@
+/*
+ * 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"
+
+int stv0900_check_signal_presence(struct stv0900_internal *i_params,
+					enum fe_stv0900_demod_num demod)
+{
+	s32 carr_offset,
+	agc2_integr,
+	max_carrier;
+
+	int no_signal;
+
+	switch (demod) {
+	case STV0900_DEMOD_1:
+	default:
+		carr_offset = (stv0900_read_reg(i_params, R0900_P1_CFR2) << 8)
+						| stv0900_read_reg(i_params,
+						R0900_P1_CFR1);
+		carr_offset = ge2comp(carr_offset, 16);
+		agc2_integr = (stv0900_read_reg(i_params, R0900_P1_AGC2I1) << 8)
+						| stv0900_read_reg(i_params,
+						R0900_P1_AGC2I0);
+		max_carrier = i_params->dmd1_srch_range / 1000;
+		break;
+	case STV0900_DEMOD_2:
+		carr_offset = (stv0900_read_reg(i_params, R0900_P2_CFR2) << 8)
+						| stv0900_read_reg(i_params,
+						R0900_P2_CFR1);
+		carr_offset = ge2comp(carr_offset, 16);
+		agc2_integr = (stv0900_read_reg(i_params, R0900_P2_AGC2I1) << 8)
+						| stv0900_read_reg(i_params,
+						R0900_P2_AGC2I0);
+		max_carrier = i_params->dmd2_srch_range / 1000;
+		break;
+	}
+
+	max_carrier += (max_carrier / 10);
+	max_carrier = 65536 * (max_carrier / 2);
+	max_carrier /= i_params->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;
+	else
+		no_signal = FALSE;
+
+	return no_signal;
+}
+
+static void stv0900_get_sw_loop_params(struct stv0900_internal *i_params,
+				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;
+
+	switch (demod) {
+	case STV0900_DEMOD_1:
+	default:
+		srate = i_params->dmd1_symbol_rate;
+		max_carrier = i_params->dmd1_srch_range / 1000;
+		max_carrier += max_carrier / 10;
+		standard = i_params->dmd1_srch_standard;
+		break;
+	case STV0900_DEMOD_2:
+		srate = i_params->dmd2_symbol_rate;
+		max_carrier = i_params->dmd2_srch_range / 1000;
+		max_carrier += max_carrier / 10;
+		standard = i_params->dmd2_srch_stndrd;
+		break;
+	}
+
+	max_carrier = 65536 * (max_carrier / 2);
+	max_carrier /= i_params->mclk / 1000;
+
+	if (max_carrier > 0x4000)
+		max_carrier = 0x4000;
+
+	freq_inc = srate;
+	freq_inc /= i_params->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 *i_params,
+				s32 FreqIncr, s32 Timeout, int zigzag,
+				s32 MaxStep, enum fe_stv0900_demod_num demod)
+{
+	int	no_signal,
+		lock = FALSE;
+	s32	stepCpt,
+		freqOffset,
+		max_carrier;
+
+	switch (demod) {
+	case STV0900_DEMOD_1:
+	default:
+		max_carrier = i_params->dmd1_srch_range / 1000;
+		max_carrier += (max_carrier / 10);
+		break;
+	case STV0900_DEMOD_2:
+		max_carrier = i_params->dmd2_srch_range / 1000;
+		max_carrier += (max_carrier / 10);
+		break;
+	}
+
+	max_carrier = 65536 * (max_carrier / 2);
+	max_carrier /= i_params->mclk / 1000;
+
+	if (max_carrier > 0x4000)
+		max_carrier = 0x4000;
+
+	if (zigzag == TRUE)
+		freqOffset = 0;
+	else
+		freqOffset = -max_carrier + FreqIncr;
+
+	stepCpt = 0;
+
+	do {
+		switch (demod) {
+		case STV0900_DEMOD_1:
+		default:
+			stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x1C);
+			stv0900_write_reg(i_params, R0900_P1_CFRINIT1,
+					(freqOffset / 256) & 0xFF);
+			stv0900_write_reg(i_params, R0900_P1_CFRINIT0,
+					 freqOffset & 0xFF);
+			stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x18);
+			stv0900_write_bits(i_params, F0900_P1_ALGOSWRST, 1);
+
+			if (i_params->chip_id == 0x12) {
+				stv0900_write_bits(i_params,
+						F0900_P1_RST_HWARE, 1);
+				stv0900_write_bits(i_params,
+						F0900_P1_RST_HWARE, 0);
+			}
+			break;
+		case STV0900_DEMOD_2:
+			stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x1C);
+			stv0900_write_reg(i_params, R0900_P2_CFRINIT1,
+					(freqOffset / 256) & 0xFF);
+			stv0900_write_reg(i_params, R0900_P2_CFRINIT0,
+					freqOffset & 0xFF);
+			stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x18);
+			stv0900_write_bits(i_params, F0900_P2_ALGOSWRST, 1);
+
+			if (i_params->chip_id == 0x12) {
+				stv0900_write_bits(i_params,
+						F0900_P2_RST_HWARE, 1);
+				stv0900_write_bits(i_params,
+						F0900_P2_RST_HWARE, 0);
+			}
+			break;
+		}
+
+		if (zigzag == TRUE) {
+			if (freqOffset >= 0)
+				freqOffset = -freqOffset - 2 * FreqIncr;
+			else
+				freqOffset = -freqOffset;
+		} else
+			freqOffset += + 2 * FreqIncr;
+
+		stepCpt++;
+		lock = stv0900_get_demod_lock(i_params, demod, Timeout);
+		no_signal = stv0900_check_signal_presence(i_params, demod);
+
+	} while ((lock == FALSE)
+			&& (no_signal == FALSE)
+			&& ((freqOffset - FreqIncr) <  max_carrier)
+			&& ((freqOffset + FreqIncr) > -max_carrier)
+			&& (stepCpt < MaxStep));
+
+	switch (demod) {
+	case STV0900_DEMOD_1:
+	default:
+		stv0900_write_bits(i_params, F0900_P1_ALGOSWRST, 0);
+		break;
+	case STV0900_DEMOD_2:
+		stv0900_write_bits(i_params, F0900_P2_ALGOSWRST, 0);
+		break;
+	}
+
+	return lock;
+}
+
+int stv0900_sw_algo(struct stv0900_internal *i_params,
+				enum fe_stv0900_demod_num demod)
+{
+	int lock = FALSE;
+
+	int no_signal,
+	zigzag;
+	s32 dvbs2_fly_wheel;
+
+	s32 freqIncrement, softStepTimeout, trialCounter, max_steps;
+
+	stv0900_get_sw_loop_params(i_params, &freqIncrement, &softStepTimeout,
+					&max_steps, demod);
+	switch (demod) {
+	case STV0900_DEMOD_1:
+	default:
+		switch (i_params->dmd1_srch_standard) {
+		case STV0900_SEARCH_DVBS1:
+		case STV0900_SEARCH_DSS:
+			if (i_params->chip_id >= 0x20)
+				stv0900_write_reg(i_params, R0900_P1_CARFREQ,
+						0x3B);
+			else
+				stv0900_write_reg(i_params, R0900_P1_CARFREQ,
+						0xef);
+
+			stv0900_write_reg(i_params, R0900_P1_DMDCFGMD, 0x49);
+			zigzag = FALSE;
+			break;
+		case STV0900_SEARCH_DVBS2:
+			if (i_params->chip_id >= 0x20)
+				stv0900_write_reg(i_params, R0900_P1_CORRELABS,
+						0x79);
+			else
+				stv0900_write_reg(i_params, R0900_P1_CORRELABS,
+						0x68);
+
+			stv0900_write_reg(i_params, R0900_P1_DMDCFGMD,
+						0x89);
+
+			zigzag = TRUE;
+			break;
+		case STV0900_AUTO_SEARCH:
+		default:
+			if (i_params->chip_id >= 0x20) {
+				stv0900_write_reg(i_params, R0900_P1_CARFREQ,
+							0x3B);
+				stv0900_write_reg(i_params, R0900_P1_CORRELABS,
+							0x79);
+			} else {
+				stv0900_write_reg(i_params, R0900_P1_CARFREQ,
+							0xef);
+				stv0900_write_reg(i_params, R0900_P1_CORRELABS,
+							0x68);
+			}
+
+			stv0900_write_reg(i_params, R0900_P1_DMDCFGMD,
+							0xc9);
+			zigzag = FALSE;
+			break;
+		}
+
+		trialCounter = 0;
+		do {
+			lock = stv0900_search_carr_sw_loop(i_params,
+							freqIncrement,
+							softStepTimeout,
+							zigzag,
+							max_steps,
+							demod);
+			no_signal = stv0900_check_signal_presence(i_params,
+								demod);
+			trialCounter++;
+			if ((lock == TRUE)
+					|| (no_signal == TRUE)
+					|| (trialCounter == 2)) {
+
+				if (i_params->chip_id >= 0x20) {
+					stv0900_write_reg(i_params,
+							R0900_P1_CARFREQ,
+							0x49);
+					stv0900_write_reg(i_params,
+							R0900_P1_CORRELABS,
+							0x9e);
+				} else {
+					stv0900_write_reg(i_params,
+							R0900_P1_CARFREQ,
+							0xed);
+					stv0900_write_reg(i_params,
+							R0900_P1_CORRELABS,
+							0x88);
+				}
+
+				if ((lock == TRUE) && (stv0900_get_bits(i_params, F0900_P1_HEADER_MODE) == STV0900_DVBS2_FOUND)) {
+					msleep(softStepTimeout);
+					dvbs2_fly_wheel = stv0900_get_bits(i_params, F0900_P1_FLYWHEEL_CPT);
+
+					if (dvbs2_fly_wheel < 0xd) {
+						msleep(softStepTimeout);
+						dvbs2_fly_wheel = stv0900_get_bits(i_params, F0900_P1_FLYWHEEL_CPT);
+					}
+
+					if (dvbs2_fly_wheel < 0xd) {
+						lock = FALSE;
+
+						if (trialCounter < 2) {
+							if (i_params->chip_id >= 0x20)
+								stv0900_write_reg(i_params, R0900_P1_CORRELABS, 0x79);
+							else
+								stv0900_write_reg(i_params, R0900_P1_CORRELABS, 0x68);
+
+							stv0900_write_reg(i_params, R0900_P1_DMDCFGMD, 0x89);
+						}
+					}
+				}
+			}
+
+		} while ((lock == FALSE)
+			&& (trialCounter < 2)
+			&& (no_signal == FALSE));
+
+		break;
+	case STV0900_DEMOD_2:
+		switch (i_params->dmd2_srch_stndrd) {
+		case STV0900_SEARCH_DVBS1:
+		case STV0900_SEARCH_DSS:
+			if (i_params->chip_id >= 0x20)
+				stv0900_write_reg(i_params, R0900_P2_CARFREQ,
+						0x3b);
+			else
+				stv0900_write_reg(i_params, R0900_P2_CARFREQ,
+						0xef);
+
+			stv0900_write_reg(i_params, R0900_P2_DMDCFGMD,
+						0x49);
+			zigzag = FALSE;
+			break;
+		case STV0900_SEARCH_DVBS2:
+			if (i_params->chip_id >= 0x20)
+				stv0900_write_reg(i_params, R0900_P2_CORRELABS,
+						0x79);
+			else
+				stv0900_write_reg(i_params, R0900_P2_CORRELABS,
+						0x68);
+
+			stv0900_write_reg(i_params, R0900_P2_DMDCFGMD, 0x89);
+			zigzag = TRUE;
+			break;
+		case STV0900_AUTO_SEARCH:
+		default:
+			if (i_params->chip_id >= 0x20) {
+				stv0900_write_reg(i_params, R0900_P2_CARFREQ,
+						0x3b);
+				stv0900_write_reg(i_params, R0900_P2_CORRELABS,
+						0x79);
+			} else {
+				stv0900_write_reg(i_params, R0900_P2_CARFREQ,
+						0xef);
+				stv0900_write_reg(i_params, R0900_P2_CORRELABS,
+						0x68);
+			}
+
+			stv0900_write_reg(i_params, R0900_P2_DMDCFGMD, 0xc9);
+
+			zigzag = FALSE;
+			break;
+		}
+
+		trialCounter = 0;
+
+		do {
+			lock = stv0900_search_carr_sw_loop(i_params,
+							freqIncrement,
+							softStepTimeout,
+							zigzag,
+							max_steps,
+							demod);
+			no_signal = stv0900_check_signal_presence(i_params,
+								demod);
+			trialCounter++;
+			if ((lock == TRUE)
+					|| (no_signal == TRUE)
+					|| (trialCounter == 2)) {
+				if (i_params->chip_id >= 0x20) {
+					stv0900_write_reg(i_params,
+							R0900_P2_CARFREQ,
+							0x49);
+					stv0900_write_reg(i_params,
+							R0900_P2_CORRELABS,
+							0x9e);
+				} else {
+					stv0900_write_reg(i_params,
+							R0900_P2_CARFREQ,
+							0xed);
+					stv0900_write_reg(i_params,
+							R0900_P2_CORRELABS,
+							0x88);
+				}
+
+				if ((lock == TRUE) && (stv0900_get_bits(i_params, F0900_P2_HEADER_MODE) == STV0900_DVBS2_FOUND)) {
+					msleep(softStepTimeout);
+					dvbs2_fly_wheel = stv0900_get_bits(i_params, F0900_P2_FLYWHEEL_CPT);
+					if (dvbs2_fly_wheel < 0xd) {
+						msleep(softStepTimeout);
+						dvbs2_fly_wheel = stv0900_get_bits(i_params, F0900_P2_FLYWHEEL_CPT);
+					}
+
+					if (dvbs2_fly_wheel < 0xd) {
+						lock = FALSE;
+						if (trialCounter < 2) {
+							if (i_params->chip_id >= 0x20)
+								stv0900_write_reg(i_params, R0900_P2_CORRELABS, 0x79);
+							else
+								stv0900_write_reg(i_params, R0900_P2_CORRELABS, 0x68);
+
+							stv0900_write_reg(i_params, R0900_P2_DMDCFGMD, 0x89);
+						}
+					}
+				}
+			}
+
+		} while ((lock == FALSE) && (trialCounter < 2) && (no_signal == FALSE));
+
+		break;
+	}
+
+	return lock;
+}
+
+static u32 stv0900_get_symbol_rate(struct stv0900_internal *i_params,
+					u32 mclk,
+					enum fe_stv0900_demod_num demod)
+{
+	s32 sfr_field3, sfr_field2, sfr_field1, sfr_field0,
+	rem1, rem2, intval1, intval2, srate;
+
+	dmd_reg(sfr_field3, F0900_P1_SYMB_FREQ3, F0900_P2_SYMB_FREQ3);
+	dmd_reg(sfr_field2, F0900_P1_SYMB_FREQ2, F0900_P2_SYMB_FREQ2);
+	dmd_reg(sfr_field1, F0900_P1_SYMB_FREQ1, F0900_P2_SYMB_FREQ1);
+	dmd_reg(sfr_field0, F0900_P1_SYMB_FREQ0, F0900_P2_SYMB_FREQ0);
+
+	srate = (stv0900_get_bits(i_params, sfr_field3) << 24) +
+		(stv0900_get_bits(i_params, sfr_field2) << 16) +
+		(stv0900_get_bits(i_params, sfr_field1) << 8) +
+		(stv0900_get_bits(i_params, sfr_field0));
+	dprintk("lock: srate=%d r0=0x%x r1=0x%x r2=0x%x r3=0x%x \n",
+		srate, stv0900_get_bits(i_params, sfr_field0),
+		stv0900_get_bits(i_params, sfr_field1),
+		stv0900_get_bits(i_params, sfr_field2),
+		stv0900_get_bits(i_params, sfr_field3));
+
+	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 *i_params,
+					u32 mclk, u32 srate,
+					enum fe_stv0900_demod_num demod)
+{
+	s32 sfr_init_reg;
+	u32 symb;
+
+	dprintk(KERN_INFO "%s: Mclk %d, SR %d, Dmd %d\n", __func__, mclk,
+							srate, demod);
+
+	dmd_reg(sfr_init_reg, R0900_P1_SFRINIT1, R0900_P2_SFRINIT1);
+
+	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(i_params, sfr_init_reg, (symb >> 8) & 0x7F);
+	stv0900_write_reg(i_params, sfr_init_reg + 1, (symb & 0xFF));
+}
+
+static void stv0900_set_max_symbol_rate(struct stv0900_internal *i_params,
+					u32 mclk, u32 srate,
+					enum fe_stv0900_demod_num demod)
+{
+	s32 sfr_max_reg;
+	u32 symb;
+
+	dmd_reg(sfr_max_reg, R0900_P1_SFRUP1, R0900_P2_SFRUP1);
+
+	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(i_params, sfr_max_reg, (symb >> 8) & 0x7F);
+		stv0900_write_reg(i_params, sfr_max_reg + 1, (symb & 0xFF));
+	} else {
+		stv0900_write_reg(i_params, sfr_max_reg, 0x7F);
+		stv0900_write_reg(i_params, sfr_max_reg + 1, 0xFF);
+	}
+}
+
+static void stv0900_set_min_symbol_rate(struct stv0900_internal *i_params,
+					u32 mclk, u32 srate,
+					enum fe_stv0900_demod_num demod)
+{
+	s32 sfr_min_reg;
+	u32	symb;
+
+	dmd_reg(sfr_min_reg, R0900_P1_SFRLOW1, R0900_P2_SFRLOW1);
+
+	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(i_params, sfr_min_reg, (symb >> 8) & 0xFF);
+	stv0900_write_reg(i_params, sfr_min_reg + 1, (symb & 0xFF));
+}
+
+static s32 stv0900_get_timing_offst(struct stv0900_internal *i_params,
+					u32 srate,
+					enum fe_stv0900_demod_num demod)
+{
+	s32 tmgreg,
+	timingoffset;
+
+	dmd_reg(tmgreg, R0900_P1_TMGREG2, R0900_P2_TMGREG2);
+
+	timingoffset = (stv0900_read_reg(i_params, tmgreg) << 16) +
+		       (stv0900_read_reg(i_params, tmgreg + 1) << 8) +
+		       (stv0900_read_reg(i_params, tmgreg + 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 *i_params,
+					enum fe_stv0900_demod_num demod)
+{
+	s32 rolloff, man_fld, matstr_reg, rolloff_ctl_fld;
+
+	dmd_reg(man_fld, F0900_P1_MANUAL_ROLLOFF, F0900_P2_MANUAL_ROLLOFF);
+	dmd_reg(matstr_reg, R0900_P1_MATSTR1, R0900_P2_MATSTR1);
+	dmd_reg(rolloff_ctl_fld, F0900_P1_ROLLOFF_CONTROL,
+				F0900_P2_ROLLOFF_CONTROL);
+
+	if (i_params->chip_id == 0x10) {
+		stv0900_write_bits(i_params, man_fld, 1);
+		rolloff = stv0900_read_reg(i_params, matstr_reg) & 0x03;
+		stv0900_write_bits(i_params, rolloff_ctl_fld, rolloff);
+	} else
+		stv0900_write_bits(i_params, man_fld, 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 *i_params,
+				enum fe_stv0900_demod_num demod)
+{
+	int timingLock = FALSE;
+	s32 i,
+	timingcpt = 0;
+	u8 carFreq,
+	tmgTHhigh,
+	tmgTHLow;
+
+	switch (demod) {
+	case STV0900_DEMOD_1:
+	default:
+		carFreq = stv0900_read_reg(i_params, R0900_P1_CARFREQ);
+		tmgTHhigh = stv0900_read_reg(i_params, R0900_P1_TMGTHRISE);
+		tmgTHLow = stv0900_read_reg(i_params, R0900_P1_TMGTHFALL);
+		stv0900_write_reg(i_params, R0900_P1_TMGTHRISE, 0x20);
+		stv0900_write_reg(i_params, R0900_P1_TMGTHFALL, 0x0);
+		stv0900_write_bits(i_params, F0900_P1_CFR_AUTOSCAN, 0);
+		stv0900_write_reg(i_params, R0900_P1_RTC, 0x80);
+		stv0900_write_reg(i_params, R0900_P1_RTCS2, 0x40);
+		stv0900_write_reg(i_params, R0900_P1_CARFREQ, 0x0);
+		stv0900_write_reg(i_params, R0900_P1_CFRINIT1, 0x0);
+		stv0900_write_reg(i_params, R0900_P1_CFRINIT0, 0x0);
+		stv0900_write_reg(i_params, R0900_P1_AGC2REF, 0x65);
+		stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x18);
+		msleep(7);
+
+		for (i = 0; i < 10; i++) {
+			if (stv0900_get_bits(i_params, F0900_P1_TMGLOCK_QUALITY) >= 2)
+				timingcpt++;
+
+			msleep(1);
+		}
+
+		if (timingcpt >= 3)
+			timingLock = TRUE;
+
+		stv0900_write_reg(i_params, R0900_P1_AGC2REF, 0x38);
+		stv0900_write_reg(i_params, R0900_P1_RTC, 0x88);
+		stv0900_write_reg(i_params, R0900_P1_RTCS2, 0x68);
+		stv0900_write_reg(i_params, R0900_P1_CARFREQ, carFreq);
+		stv0900_write_reg(i_params, R0900_P1_TMGTHRISE, tmgTHhigh);
+		stv0900_write_reg(i_params, R0900_P1_TMGTHFALL, tmgTHLow);
+		break;
+	case STV0900_DEMOD_2:
+		carFreq = stv0900_read_reg(i_params, R0900_P2_CARFREQ);
+		tmgTHhigh = stv0900_read_reg(i_params, R0900_P2_TMGTHRISE);
+		tmgTHLow = stv0900_read_reg(i_params, R0900_P2_TMGTHFALL);
+		stv0900_write_reg(i_params, R0900_P2_TMGTHRISE, 0x20);
+		stv0900_write_reg(i_params, R0900_P2_TMGTHFALL, 0);
+		stv0900_write_bits(i_params, F0900_P2_CFR_AUTOSCAN, 0);
+		stv0900_write_reg(i_params, R0900_P2_RTC, 0x80);
+		stv0900_write_reg(i_params, R0900_P2_RTCS2, 0x40);
+		stv0900_write_reg(i_params, R0900_P2_CARFREQ, 0x0);
+		stv0900_write_reg(i_params, R0900_P2_CFRINIT1, 0x0);
+		stv0900_write_reg(i_params, R0900_P2_CFRINIT0, 0x0);
+		stv0900_write_reg(i_params, R0900_P2_AGC2REF, 0x65);
+		stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x18);
+		msleep(5);
+		for (i = 0; i < 10; i++) {
+			if (stv0900_get_bits(i_params, F0900_P2_TMGLOCK_QUALITY) >= 2)
+				timingcpt++;
+
+			msleep(1);
+		}
+
+		if (timingcpt >= 3)
+			timingLock = TRUE;
+
+		stv0900_write_reg(i_params, R0900_P2_AGC2REF, 0x38);
+		stv0900_write_reg(i_params, R0900_P2_RTC, 0x88);
+		stv0900_write_reg(i_params, R0900_P2_RTCS2, 0x68);
+		stv0900_write_reg(i_params, R0900_P2_CARFREQ, carFreq);
+		stv0900_write_reg(i_params, R0900_P2_TMGTHRISE, tmgTHhigh);
+		stv0900_write_reg(i_params, R0900_P2_TMGTHFALL, tmgTHLow);
+		break;
+	}
+
+	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 *i_params = state->internal;
+	enum fe_stv0900_demod_num demod = state->demod;
+
+	int lock = FALSE;
+	s32 srate, search_range, locktimeout,
+		currier_step, nb_steps, current_step,
+		direction, tuner_freq, timeout;
+
+	switch (demod) {
+	case STV0900_DEMOD_1:
+	default:
+		srate = i_params->dmd1_symbol_rate;
+		search_range = i_params->dmd1_srch_range;
+		break;
+
+	case STV0900_DEMOD_2:
+		srate = i_params->dmd2_symbol_rate;
+		search_range = i_params->dmd2_srch_range;
+		break;
+	}
+
+	if (srate >= 10000000)
+		locktimeout = demod_timeout / 3;
+	else
+		locktimeout = demod_timeout / 2;
+
+	lock = stv0900_get_demod_lock(i_params, demod, locktimeout);
+
+	if (lock == FALSE) {
+		if (srate >= 10000000) {
+			if (stv0900_check_timing_lock(i_params, demod) == TRUE) {
+				switch (demod) {
+				case STV0900_DEMOD_1:
+				default:
+					stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x1f);
+					stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x15);
+					break;
+				case STV0900_DEMOD_2:
+					stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x1f);
+					stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x15);
+					break;
+				}
+
+				lock = stv0900_get_demod_lock(i_params, demod, demod_timeout);
+			} else
+				lock = FALSE;
+		} 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;
+
+			nb_steps = ((search_range / 1000) / currier_step);
+			nb_steps /= 2;
+			nb_steps = (2 * (nb_steps + 1));
+			if (nb_steps < 0)
+				nb_steps = 2;
+			else if (nb_steps > 12)
+				nb_steps = 12;
+
+			current_step = 1;
+			direction = 1;
+			timeout = (demod_timeout / 3);
+			if (timeout > 1000)
+				timeout = 1000;
+
+			switch (demod) {
+			case STV0900_DEMOD_1:
+			default:
+				if (lock == FALSE) {
+					tuner_freq = i_params->tuner1_freq;
+					i_params->tuner1_bw = stv0900_carrier_width(i_params->dmd1_symbol_rate, i_params->rolloff) + i_params->dmd1_symbol_rate;
+
+					while ((current_step <= nb_steps) && (lock == FALSE)) {
+
+						if (direction > 0)
+							tuner_freq += (current_step * currier_step);
+						else
+							tuner_freq -= (current_step * currier_step);
+
+						stv0900_set_tuner(fe, tuner_freq, i_params->tuner1_bw);
+						stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x1C);
+						if (i_params->dmd1_srch_standard == STV0900_SEARCH_DVBS2) {
+							stv0900_write_bits(i_params, F0900_P1_DVBS1_ENABLE, 0);
+							stv0900_write_bits(i_params, F0900_P1_DVBS2_ENABLE, 0);
+							stv0900_write_bits(i_params, F0900_P1_DVBS1_ENABLE, 1);
+							stv0900_write_bits(i_params, F0900_P1_DVBS2_ENABLE, 1);
+						}
+
+						stv0900_write_reg(i_params, R0900_P1_CFRINIT1, 0);
+						stv0900_write_reg(i_params, R0900_P1_CFRINIT0, 0);
+						stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x1F);
+						stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x15);
+						lock = stv0900_get_demod_lock(i_params, demod, timeout);
+						direction *= -1;
+						current_step++;
+					}
+				}
+				break;
+			case STV0900_DEMOD_2:
+				if (lock == FALSE) {
+					tuner_freq = i_params->tuner2_freq;
+					i_params->tuner2_bw = stv0900_carrier_width(srate, i_params->rolloff) + srate;
+
+					while ((current_step <= nb_steps) && (lock == FALSE)) {
+
+						if (direction > 0)
+							tuner_freq += (current_step * currier_step);
+						else
+							tuner_freq -= (current_step * currier_step);
+
+						stv0900_set_tuner(fe, tuner_freq, i_params->tuner2_bw);
+						stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x1C);
+						if (i_params->dmd2_srch_stndrd == STV0900_SEARCH_DVBS2) {
+							stv0900_write_bits(i_params, F0900_P2_DVBS1_ENABLE, 0);
+							stv0900_write_bits(i_params, F0900_P2_DVBS2_ENABLE, 0);
+							stv0900_write_bits(i_params, F0900_P2_DVBS1_ENABLE, 1);
+							stv0900_write_bits(i_params, F0900_P2_DVBS2_ENABLE, 1);
+						}
+
+						stv0900_write_reg(i_params, R0900_P2_CFRINIT1, 0);
+						stv0900_write_reg(i_params, R0900_P2_CFRINIT0, 0);
+						stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x1F);
+						stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x15);
+						lock = stv0900_get_demod_lock(i_params, demod, timeout);
+						direction *= -1;
+						current_step++;
+					}
+				}
+				break;
+			}
+		}
+	}
+
+	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 *i_params,
+					enum fe_stv0900_demod_num demod)
+{
+
+	s32 vth_reg;
+
+	dprintk(KERN_INFO "%s\n", __func__);
+
+	dmd_reg(vth_reg, R0900_P1_VTH12, R0900_P2_VTH12);
+
+	stv0900_write_reg(i_params, vth_reg++, 0xd0);
+	stv0900_write_reg(i_params, vth_reg++, 0x7d);
+	stv0900_write_reg(i_params, vth_reg++, 0x53);
+	stv0900_write_reg(i_params, vth_reg++, 0x2F);
+	stv0900_write_reg(i_params, vth_reg++, 0x24);
+	stv0900_write_reg(i_params, vth_reg++, 0x1F);
+}
+
+static void stv0900_set_viterbi_standard(struct stv0900_internal *i_params,
+				   enum fe_stv0900_search_standard Standard,
+				   enum fe_stv0900_fec PunctureRate,
+				   enum fe_stv0900_demod_num demod)
+{
+
+	s32 fecmReg,
+	prvitReg;
+
+	dprintk(KERN_INFO "%s: ViterbiStandard = ", __func__);
+
+	switch (demod) {
+	case STV0900_DEMOD_1:
+	default:
+		fecmReg = R0900_P1_FECM;
+		prvitReg = R0900_P1_PRVIT;
+		break;
+	case STV0900_DEMOD_2:
+		fecmReg = R0900_P2_FECM;
+		prvitReg = R0900_P2_PRVIT;
+		break;
+	}
+
+	switch (Standard) {
+	case STV0900_AUTO_SEARCH:
+		dprintk("Auto\n");
+		stv0900_write_reg(i_params, fecmReg, 0x10);
+		stv0900_write_reg(i_params, prvitReg, 0x3F);
+		break;
+	case STV0900_SEARCH_DVBS1:
+		dprintk("DVBS1\n");
+		stv0900_write_reg(i_params, fecmReg, 0x00);
+		switch (PunctureRate) {
+		case STV0900_FEC_UNKNOWN:
+		default:
+			stv0900_write_reg(i_params, prvitReg, 0x2F);
+			break;
+		case STV0900_FEC_1_2:
+			stv0900_write_reg(i_params, prvitReg, 0x01);
+			break;
+		case STV0900_FEC_2_3:
+			stv0900_write_reg(i_params, prvitReg, 0x02);
+			break;
+		case STV0900_FEC_3_4:
+			stv0900_write_reg(i_params, prvitReg, 0x04);
+			break;
+		case STV0900_FEC_5_6:
+			stv0900_write_reg(i_params, prvitReg, 0x08);
+			break;
+		case STV0900_FEC_7_8:
+			stv0900_write_reg(i_params, prvitReg, 0x20);
+			break;
+		}
+
+		break;
+	case STV0900_SEARCH_DSS:
+		dprintk("DSS\n");
+		stv0900_write_reg(i_params, fecmReg, 0x80);
+		switch (PunctureRate) {
+		case STV0900_FEC_UNKNOWN:
+		default:
+			stv0900_write_reg(i_params, prvitReg, 0x13);
+			break;
+		case STV0900_FEC_1_2:
+			stv0900_write_reg(i_params, prvitReg, 0x01);
+			break;
+		case STV0900_FEC_2_3:
+			stv0900_write_reg(i_params, prvitReg, 0x02);
+			break;
+		case STV0900_FEC_6_7:
+			stv0900_write_reg(i_params, prvitReg, 0x10);
+			break;
+		}
+		break;
+	default:
+		break;
+	}
+}
+
+static void stv0900_track_optimization(struct dvb_frontend *fe)
+{
+	struct stv0900_state *state = fe->demodulator_priv;
+	struct stv0900_internal *i_params = state->internal;
+	enum fe_stv0900_demod_num demod = state->demod;
+
+	s32 srate, pilots, aclc, freq1, freq0,
+		i = 0, timed, timef, blindTunSw = 0;
+
+	enum fe_stv0900_rolloff rolloff;
+	enum fe_stv0900_modcode foundModcod;
+
+	dprintk(KERN_INFO "%s\n", __func__);
+
+	srate = stv0900_get_symbol_rate(i_params, i_params->mclk, demod);
+	srate += stv0900_get_timing_offst(i_params, srate, demod);
+
+	switch (demod) {
+	case STV0900_DEMOD_1:
+	default:
+		switch (i_params->dmd1_rslts.standard) {
+		case STV0900_DVBS1_STANDARD:
+			if (i_params->dmd1_srch_standard == STV0900_AUTO_SEARCH) {
+				stv0900_write_bits(i_params, F0900_P1_DVBS1_ENABLE, 1);
+				stv0900_write_bits(i_params, F0900_P1_DVBS2_ENABLE, 0);
+			}
+
+			stv0900_write_bits(i_params, F0900_P1_ROLLOFF_CONTROL, i_params->rolloff);
+			stv0900_write_bits(i_params, F0900_P1_MANUAL_ROLLOFF, 1);
+			stv0900_write_reg(i_params, R0900_P1_ERRCTRL1, 0x75);
+			break;
+		case STV0900_DSS_STANDARD:
+			if (i_params->dmd1_srch_standard == STV0900_AUTO_SEARCH) {
+				stv0900_write_bits(i_params, F0900_P1_DVBS1_ENABLE, 1);
+				stv0900_write_bits(i_params, F0900_P1_DVBS2_ENABLE, 0);
+			}
+
+			stv0900_write_bits(i_params, F0900_P1_ROLLOFF_CONTROL, i_params->rolloff);
+			stv0900_write_bits(i_params, F0900_P1_MANUAL_ROLLOFF, 1);
+			stv0900_write_reg(i_params, R0900_P1_ERRCTRL1, 0x75);
+			break;
+		case STV0900_DVBS2_STANDARD:
+			stv0900_write_bits(i_params, F0900_P1_DVBS1_ENABLE, 0);
+			stv0900_write_bits(i_params, F0900_P1_DVBS2_ENABLE, 1);
+			stv0900_write_reg(i_params, R0900_P1_ACLC, 0);
+			stv0900_write_reg(i_params, R0900_P1_BCLC, 0);
+			if (i_params->dmd1_rslts.frame_length == STV0900_LONG_FRAME) {
+				foundModcod = stv0900_get_bits(i_params, F0900_P1_DEMOD_MODCOD);
+				pilots = stv0900_get_bits(i_params, F0900_P1_DEMOD_TYPE) & 0x01;
+				aclc = stv0900_get_optim_carr_loop(srate, foundModcod, pilots, i_params->chip_id);
+				if (foundModcod <= STV0900_QPSK_910)
+					stv0900_write_reg(i_params, R0900_P1_ACLC2S2Q, aclc);
+				else if (foundModcod <= STV0900_8PSK_910) {
+					stv0900_write_reg(i_params, R0900_P1_ACLC2S2Q, 0x2a);
+					stv0900_write_reg(i_params, R0900_P1_ACLC2S28, aclc);
+				}
+
+				if ((i_params->demod_mode == STV0900_SINGLE) && (foundModcod > STV0900_8PSK_910)) {
+					if (foundModcod <= STV0900_16APSK_910) {
+						stv0900_write_reg(i_params, R0900_P1_ACLC2S2Q, 0x2a);
+						stv0900_write_reg(i_params, R0900_P1_ACLC2S216A, aclc);
+					} else if (foundModcod <= STV0900_32APSK_910) {
+						stv0900_write_reg(i_params, R0900_P1_ACLC2S2Q, 0x2a);
+						stv0900_write_reg(i_params, R0900_P1_ACLC2S232A, aclc);
+					}
+				}
+
+			} else {
+				aclc = stv0900_get_optim_short_carr_loop(srate, i_params->dmd1_rslts.modulation, i_params->chip_id);
+				if (i_params->dmd1_rslts.modulation == STV0900_QPSK)
+					stv0900_write_reg(i_params, R0900_P1_ACLC2S2Q, aclc);
+
+				else if (i_params->dmd1_rslts.modulation == STV0900_8PSK) {
+					stv0900_write_reg(i_params, R0900_P1_ACLC2S2Q, 0x2a);
+					stv0900_write_reg(i_params, R0900_P1_ACLC2S28, aclc);
+				} else if (i_params->dmd1_rslts.modulation == STV0900_16APSK) {
+					stv0900_write_reg(i_params, R0900_P1_ACLC2S2Q, 0x2a);
+					stv0900_write_reg(i_params, R0900_P1_ACLC2S216A, aclc);
+				} else if (i_params->dmd1_rslts.modulation == STV0900_32APSK) {
+					stv0900_write_reg(i_params, R0900_P1_ACLC2S2Q, 0x2a);
+					stv0900_write_reg(i_params, R0900_P1_ACLC2S232A, aclc);
+				}
+
+			}
+
+			if (i_params->chip_id <= 0x11) {
+				if (i_params->demod_mode != STV0900_SINGLE)
+					stv0900_activate_s2_modcode(i_params, demod);
+
+			}
+
+			stv0900_write_reg(i_params, R0900_P1_ERRCTRL1, 0x67);
+			break;
+		case STV0900_UNKNOWN_STANDARD:
+		default:
+			stv0900_write_bits(i_params, F0900_P1_DVBS1_ENABLE, 1);
+			stv0900_write_bits(i_params, F0900_P1_DVBS2_ENABLE, 1);
+			break;
+		}
+
+		freq1 = stv0900_read_reg(i_params, R0900_P1_CFR2);
+		freq0 = stv0900_read_reg(i_params, R0900_P1_CFR1);
+		rolloff = stv0900_get_bits(i_params, F0900_P1_ROLLOFF_STATUS);
+		if (i_params->dmd1_srch_algo == STV0900_BLIND_SEARCH) {
+			stv0900_write_reg(i_params, R0900_P1_SFRSTEP, 0x00);
+			stv0900_write_bits(i_params, F0900_P1_SCAN_ENABLE, 0);
+			stv0900_write_bits(i_params, F0900_P1_CFR_AUTOSCAN, 0);
+			stv0900_write_reg(i_params, R0900_P1_TMGCFG2, 0x01);
+			stv0900_set_symbol_rate(i_params, i_params->mclk, srate, demod);
+			stv0900_set_max_symbol_rate(i_params, i_params->mclk, srate, demod);
+			stv0900_set_min_symbol_rate(i_params, i_params->mclk, srate, demod);
+			blindTunSw = 1;
+		}
+
+		if (i_params->chip_id >= 0x20) {
+			if ((i_params->dmd1_srch_standard == STV0900_SEARCH_DVBS1) || (i_params->dmd1_srch_standard == STV0900_SEARCH_DSS) || (i_params->dmd1_srch_standard == STV0900_AUTO_SEARCH)) {
+				stv0900_write_reg(i_params, R0900_P1_VAVSRVIT, 0x0a);
+				stv0900_write_reg(i_params, R0900_P1_VITSCALE, 0x0);
+			}
+		}
+
+		if (i_params->chip_id < 0x20)
+			stv0900_write_reg(i_params, R0900_P1_CARHDR, 0x08);
+
+		if (i_params->chip_id == 0x10)
+			stv0900_write_reg(i_params, R0900_P1_CORRELEXP, 0x0A);
+
+		stv0900_write_reg(i_params, R0900_P1_AGC2REF, 0x38);
+
+		if ((i_params->chip_id >= 0x20) || (blindTunSw == 1) || (i_params->dmd1_symbol_rate < 10000000)) {
+			stv0900_write_reg(i_params, R0900_P1_CFRINIT1, freq1);
+			stv0900_write_reg(i_params, R0900_P1_CFRINIT0, freq0);
+			i_params->tuner1_bw = stv0900_carrier_width(srate, i_params->rolloff) + 10000000;
+
+			if ((i_params->chip_id >= 0x20) || (blindTunSw == 1)) {
+				if (i_params->dmd1_srch_algo != STV0900_WARM_START)
+					stv0900_set_bandwidth(fe, i_params->tuner1_bw);
+			}
+
+			if ((i_params->dmd1_srch_algo == STV0900_BLIND_SEARCH) || (i_params->dmd1_symbol_rate < 10000000))
+				msleep(50);
+			else
+				msleep(5);
+
+			stv0900_get_lock_timeout(&timed, &timef, srate, STV0900_WARM_START);
+
+			if (stv0900_get_demod_lock(i_params, demod, timed / 2) == FALSE) {
+				stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x1F);
+				stv0900_write_reg(i_params, R0900_P1_CFRINIT1, freq1);
+				stv0900_write_reg(i_params, R0900_P1_CFRINIT0, freq0);
+				stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x18);
+				i = 0;
+				while ((stv0900_get_demod_lock(i_params, demod, timed / 2) == FALSE) && (i <= 2)) {
+					stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x1F);
+					stv0900_write_reg(i_params, R0900_P1_CFRINIT1, freq1);
+					stv0900_write_reg(i_params, R0900_P1_CFRINIT0, freq0);
+					stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x18);
+					i++;
+				}
+			}
+
+		}
+
+		if (i_params->chip_id >= 0x20)
+			stv0900_write_reg(i_params, R0900_P1_CARFREQ, 0x49);
+
+		if ((i_params->dmd1_rslts.standard == STV0900_DVBS1_STANDARD) || (i_params->dmd1_rslts.standard == STV0900_DSS_STANDARD))
+			stv0900_set_viterbi_tracq(i_params, demod);
+
+		break;
+
+	case STV0900_DEMOD_2:
+		switch (i_params->dmd2_rslts.standard) {
+		case STV0900_DVBS1_STANDARD:
+
+			if (i_params->dmd2_srch_stndrd == STV0900_AUTO_SEARCH) {
+				stv0900_write_bits(i_params, F0900_P2_DVBS1_ENABLE, 1);
+				stv0900_write_bits(i_params, F0900_P2_DVBS2_ENABLE, 0);
+			}
+
+			stv0900_write_bits(i_params, F0900_P2_ROLLOFF_CONTROL, i_params->rolloff);
+			stv0900_write_bits(i_params, F0900_P2_MANUAL_ROLLOFF, 1);
+			stv0900_write_reg(i_params, R0900_P2_ERRCTRL1, 0x75);
+			break;
+		case STV0900_DSS_STANDARD:
+			if (i_params->dmd2_srch_stndrd == STV0900_AUTO_SEARCH) {
+				stv0900_write_bits(i_params, F0900_P2_DVBS1_ENABLE, 1);
+				stv0900_write_bits(i_params, F0900_P2_DVBS2_ENABLE, 0);
+			}
+
+			stv0900_write_bits(i_params, F0900_P2_ROLLOFF_CONTROL, i_params->rolloff);
+			stv0900_write_bits(i_params, F0900_P2_MANUAL_ROLLOFF, 1);
+			stv0900_write_reg(i_params, R0900_P2_ERRCTRL1, 0x75);
+			break;
+		case STV0900_DVBS2_STANDARD:
+			stv0900_write_bits(i_params, F0900_P2_DVBS1_ENABLE, 0);
+			stv0900_write_bits(i_params, F0900_P2_DVBS2_ENABLE, 1);
+			stv0900_write_reg(i_params, R0900_P2_ACLC, 0);
+			stv0900_write_reg(i_params, R0900_P2_BCLC, 0);
+			if (i_params->dmd2_rslts.frame_length == STV0900_LONG_FRAME) {
+				foundModcod = stv0900_get_bits(i_params, F0900_P2_DEMOD_MODCOD);
+				pilots = stv0900_get_bits(i_params, F0900_P2_DEMOD_TYPE) & 0x01;
+				aclc = stv0900_get_optim_carr_loop(srate, foundModcod, pilots, i_params->chip_id);
+				if (foundModcod <= STV0900_QPSK_910)
+					stv0900_write_reg(i_params, R0900_P2_ACLC2S2Q, aclc);
+				else if (foundModcod <= STV0900_8PSK_910) {
+					stv0900_write_reg(i_params, R0900_P2_ACLC2S2Q, 0x2a);
+					stv0900_write_reg(i_params, R0900_P2_ACLC2S28, aclc);
+				}
+
+				if ((i_params->demod_mode == STV0900_SINGLE) && (foundModcod > STV0900_8PSK_910)) {
+					if (foundModcod <= STV0900_16APSK_910) {
+						stv0900_write_reg(i_params, R0900_P2_ACLC2S2Q, 0x2a);
+						stv0900_write_reg(i_params, R0900_P2_ACLC2S216A, aclc);
+					} else if (foundModcod <= STV0900_32APSK_910) {
+						stv0900_write_reg(i_params, R0900_P2_ACLC2S2Q, 0x2a);
+						stv0900_write_reg(i_params, R0900_P2_ACLC2S232A, aclc);
+					}
+
+				}
+
+			} else {
+				aclc = stv0900_get_optim_short_carr_loop(srate,
+									i_params->dmd2_rslts.modulation,
+									i_params->chip_id);
+
+				if (i_params->dmd2_rslts.modulation == STV0900_QPSK)
+					stv0900_write_reg(i_params, R0900_P2_ACLC2S2Q, aclc);
+
+				else if (i_params->dmd2_rslts.modulation == STV0900_8PSK) {
+					stv0900_write_reg(i_params, R0900_P2_ACLC2S2Q, 0x2a);
+					stv0900_write_reg(i_params, R0900_P2_ACLC2S28, aclc);
+				} else if (i_params->dmd2_rslts.modulation == STV0900_16APSK) {
+					stv0900_write_reg(i_params, R0900_P2_ACLC2S2Q, 0x2a);
+					stv0900_write_reg(i_params, R0900_P2_ACLC2S216A, aclc);
+				} else if (i_params->dmd2_rslts.modulation == STV0900_32APSK) {
+					stv0900_write_reg(i_params, R0900_P2_ACLC2S2Q, 0x2a);
+					stv0900_write_reg(i_params, R0900_P2_ACLC2S232A, aclc);
+				}
+			}
+
+			stv0900_write_reg(i_params, R0900_P2_ERRCTRL1, 0x67);
+
+			break;
+		case STV0900_UNKNOWN_STANDARD:
+		default:
+			stv0900_write_bits(i_params, F0900_P2_DVBS1_ENABLE, 1);
+			stv0900_write_bits(i_params, F0900_P2_DVBS2_ENABLE, 1);
+			break;
+		}
+
+		freq1 = stv0900_read_reg(i_params, R0900_P2_CFR2);
+		freq0 = stv0900_read_reg(i_params, R0900_P2_CFR1);
+		rolloff = stv0900_get_bits(i_params, F0900_P2_ROLLOFF_STATUS);
+		if (i_params->dmd2_srch_algo == STV0900_BLIND_SEARCH) {
+			stv0900_write_reg(i_params, R0900_P2_SFRSTEP, 0x00);
+			stv0900_write_bits(i_params, F0900_P2_SCAN_ENABLE, 0);
+			stv0900_write_bits(i_params, F0900_P2_CFR_AUTOSCAN, 0);
+			stv0900_write_reg(i_params, R0900_P2_TMGCFG2, 0x01);
+			stv0900_set_symbol_rate(i_params, i_params->mclk, srate, demod);
+			stv0900_set_max_symbol_rate(i_params, i_params->mclk, srate, demod);
+			stv0900_set_min_symbol_rate(i_params, i_params->mclk, srate, demod);
+			blindTunSw = 1;
+		}
+
+		if (i_params->chip_id >= 0x20) {
+			if ((i_params->dmd2_srch_stndrd == STV0900_SEARCH_DVBS1) || (i_params->dmd2_srch_stndrd == STV0900_SEARCH_DSS) || (i_params->dmd2_srch_stndrd == STV0900_AUTO_SEARCH)) {
+				stv0900_write_reg(i_params, R0900_P2_VAVSRVIT, 0x0a);
+				stv0900_write_reg(i_params, R0900_P2_VITSCALE, 0x0);
+			}
+		}
+
+		if (i_params->chip_id < 0x20)
+			stv0900_write_reg(i_params, R0900_P2_CARHDR, 0x08);
+
+		if (i_params->chip_id == 0x10)
+			stv0900_write_reg(i_params, R0900_P2_CORRELEXP, 0x0a);
+
+		stv0900_write_reg(i_params, R0900_P2_AGC2REF, 0x38);
+		if ((i_params->chip_id >= 0x20) || (blindTunSw == 1) || (i_params->dmd2_symbol_rate < 10000000)) {
+			stv0900_write_reg(i_params, R0900_P2_CFRINIT1, freq1);
+			stv0900_write_reg(i_params, R0900_P2_CFRINIT0, freq0);
+			i_params->tuner2_bw = stv0900_carrier_width(srate, i_params->rolloff) + 10000000;
+
+			if ((i_params->chip_id >= 0x20) || (blindTunSw == 1)) {
+				if (i_params->dmd2_srch_algo != STV0900_WARM_START)
+					stv0900_set_bandwidth(fe, i_params->tuner2_bw);
+			}
+
+			if ((i_params->dmd2_srch_algo == STV0900_BLIND_SEARCH) || (i_params->dmd2_symbol_rate < 10000000))
+				msleep(50);
+			else
+				msleep(5);
+
+			stv0900_get_lock_timeout(&timed, &timef, srate, STV0900_WARM_START);
+			if (stv0900_get_demod_lock(i_params, demod, timed / 2) == FALSE) {
+				stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x1F);
+				stv0900_write_reg(i_params, R0900_P2_CFRINIT1, freq1);
+				stv0900_write_reg(i_params, R0900_P2_CFRINIT0, freq0);
+				stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x18);
+				i = 0;
+				while ((stv0900_get_demod_lock(i_params, demod, timed / 2) == FALSE) && (i <= 2)) {
+					stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x1F);
+					stv0900_write_reg(i_params, R0900_P2_CFRINIT1, freq1);
+					stv0900_write_reg(i_params, R0900_P2_CFRINIT0, freq0);
+					stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x18);
+					i++;
+				}
+			}
+		}
+
+		if (i_params->chip_id >= 0x20)
+			stv0900_write_reg(i_params, R0900_P2_CARFREQ, 0x49);
+
+		if ((i_params->dmd2_rslts.standard == STV0900_DVBS1_STANDARD) || (i_params->dmd2_rslts.standard == STV0900_DSS_STANDARD))
+			stv0900_set_viterbi_tracq(i_params, demod);
+
+		break;
+	}
+}
+
+static int stv0900_get_fec_lock(struct stv0900_internal *i_params, enum fe_stv0900_demod_num demod, s32 time_out)
+{
+	s32 timer = 0, lock = 0, header_field, pktdelin_field, lock_vit_field;
+
+	enum fe_stv0900_search_state dmd_state;
+
+	dprintk(KERN_INFO "%s\n", __func__);
+
+	dmd_reg(header_field, F0900_P1_HEADER_MODE, F0900_P2_HEADER_MODE);
+	dmd_reg(pktdelin_field, F0900_P1_PKTDELIN_LOCK, F0900_P2_PKTDELIN_LOCK);
+	dmd_reg(lock_vit_field, F0900_P1_LOCKEDVIT, F0900_P2_LOCKEDVIT);
+
+	dmd_state = stv0900_get_bits(i_params, header_field);
+
+	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(i_params, pktdelin_field);
+			break;
+		case STV0900_DVBS_FOUND:
+			lock = stv0900_get_bits(i_params, lock_vit_field);
+			break;
+		}
+
+		if (lock == 0) {
+			msleep(10);
+			timer += 10;
+		}
+	}
+
+	if (lock)
+		dprintk("DEMOD FEC LOCK OK\n");
+	else
+		dprintk("DEMOD FEC LOCK FAIL\n");
+
+	return lock;
+}
+
+static int stv0900_wait_for_lock(struct stv0900_internal *i_params,
+				enum fe_stv0900_demod_num demod,
+				s32 dmd_timeout, s32 fec_timeout)
+{
+
+	s32 timer = 0, lock = 0, str_merg_rst_fld, str_merg_lock_fld;
+
+	dprintk(KERN_INFO "%s\n", __func__);
+
+	dmd_reg(str_merg_rst_fld, F0900_P1_RST_HWARE, F0900_P2_RST_HWARE);
+	dmd_reg(str_merg_lock_fld, F0900_P1_TSFIFO_LINEOK, F0900_P2_TSFIFO_LINEOK);
+
+	lock = stv0900_get_demod_lock(i_params, demod, dmd_timeout);
+
+	if (lock)
+		lock = lock && stv0900_get_fec_lock(i_params, demod, fec_timeout);
+
+	if (lock) {
+		lock = 0;
+
+		dprintk(KERN_INFO "%s: Timer = %d, time_out = %d\n", __func__, timer, fec_timeout);
+
+		while ((timer < fec_timeout) && (lock == 0)) {
+			lock = stv0900_get_bits(i_params, str_merg_lock_fld);
+			msleep(1);
+			timer++;
+		}
+	}
+
+	if (lock)
+		dprintk(KERN_INFO "%s: DEMOD LOCK OK\n", __func__);
+	else
+		dprintk(KERN_INFO "%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 *i_params = state->internal;
+	enum fe_stv0900_tracking_standard fnd_standard;
+	s32 state_field,
+	dss_dvb_field;
+
+	dprintk(KERN_INFO "%s\n", __func__);
+
+	dmd_reg(state_field, F0900_P1_HEADER_MODE, F0900_P2_HEADER_MODE);
+	dmd_reg(dss_dvb_field, F0900_P1_DSS_DVB, F0900_P2_DSS_DVB);
+
+	if (stv0900_get_bits(i_params, state_field) == 2)
+		fnd_standard = STV0900_DVBS2_STANDARD;
+
+	else if (stv0900_get_bits(i_params, state_field) == 3) {
+		if (stv0900_get_bits(i_params, dss_dvb_field) == 1)
+			fnd_standard = STV0900_DSS_STANDARD;
+		else
+			fnd_standard = STV0900_DVBS1_STANDARD;
+	} else
+		fnd_standard = STV0900_UNKNOWN_STANDARD;
+
+	return fnd_standard;
+}
+
+static s32 stv0900_get_carr_freq(struct stv0900_internal *i_params, u32 mclk,
+					enum fe_stv0900_demod_num demod)
+{
+	s32 cfr_field2, cfr_field1, cfr_field0,
+		derot, rem1, rem2, intval1, intval2;
+
+	dmd_reg(cfr_field2, F0900_P1_CAR_FREQ2, F0900_P2_CAR_FREQ2);
+	dmd_reg(cfr_field1, F0900_P1_CAR_FREQ1, F0900_P2_CAR_FREQ1);
+	dmd_reg(cfr_field0, F0900_P1_CAR_FREQ0, F0900_P2_CAR_FREQ0);
+
+	derot = (stv0900_get_bits(i_params, cfr_field2) << 16) +
+		(stv0900_get_bits(i_params, cfr_field1) << 8) +
+		(stv0900_get_bits(i_params, cfr_field0));
+
+	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 frequency = 0;
+
+	if (&fe->ops)
+		frontend_ops = &fe->ops;
+
+	if (&frontend_ops->tuner_ops)
+		tuner_ops = &frontend_ops->tuner_ops;
+
+	if (tuner_ops->get_frequency) {
+		if ((tuner_ops->get_frequency(fe, &frequency)) < 0)
+			dprintk("%s: Invalid parameter\n", __func__);
+		else
+			dprintk("%s: Frequency=%d\n", __func__, frequency);
+
+	}
+
+	return frequency;
+}
+
+static enum fe_stv0900_fec stv0900_get_vit_fec(struct stv0900_internal *i_params,
+						enum fe_stv0900_demod_num demod)
+{
+	s32 rate_fld, vit_curpun_fld;
+	enum fe_stv0900_fec prate;
+
+	dmd_reg(vit_curpun_fld, F0900_P1_VIT_CURPUN, F0900_P2_VIT_CURPUN);
+	rate_fld = stv0900_get_bits(i_params, vit_curpun_fld);
+
+	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 enum fe_stv0900_signal_type stv0900_get_signal_params(struct dvb_frontend *fe)
+{
+	struct stv0900_state *state = fe->demodulator_priv;
+	struct stv0900_internal *i_params = state->internal;
+	enum fe_stv0900_demod_num demod = state->demod;
+	enum fe_stv0900_signal_type range = STV0900_OUTOFRANGE;
+	s32 offsetFreq,
+	srate_offset,
+	i = 0;
+
+	u8 timing;
+
+	msleep(5);
+	switch (demod) {
+	case STV0900_DEMOD_1:
+	default:
+		if (i_params->dmd1_srch_algo == STV0900_BLIND_SEARCH) {
+			timing = stv0900_read_reg(i_params, R0900_P1_TMGREG2);
+			i = 0;
+			stv0900_write_reg(i_params, R0900_P1_SFRSTEP, 0x5c);
+
+			while ((i <= 50) && (timing != 0) && (timing != 0xFF)) {
+				timing = stv0900_read_reg(i_params, R0900_P1_TMGREG2);
+				msleep(5);
+				i += 5;
+			}
+		}
+
+		i_params->dmd1_rslts.standard = stv0900_get_standard(fe, demod);
+		i_params->dmd1_rslts.frequency = stv0900_get_tuner_freq(fe);
+		offsetFreq = stv0900_get_carr_freq(i_params, i_params->mclk, demod) / 1000;
+		i_params->dmd1_rslts.frequency += offsetFreq;
+		i_params->dmd1_rslts.symbol_rate = stv0900_get_symbol_rate(i_params, i_params->mclk, demod);
+		srate_offset = stv0900_get_timing_offst(i_params, i_params->dmd1_rslts.symbol_rate, demod);
+		i_params->dmd1_rslts.symbol_rate += srate_offset;
+		i_params->dmd1_rslts.fec = stv0900_get_vit_fec(i_params, demod);
+		i_params->dmd1_rslts.modcode = stv0900_get_bits(i_params, F0900_P1_DEMOD_MODCOD);
+		i_params->dmd1_rslts.pilot = stv0900_get_bits(i_params, F0900_P1_DEMOD_TYPE) & 0x01;
+		i_params->dmd1_rslts.frame_length = ((u32)stv0900_get_bits(i_params, F0900_P1_DEMOD_TYPE)) >> 1;
+		i_params->dmd1_rslts.rolloff = stv0900_get_bits(i_params, F0900_P1_ROLLOFF_STATUS);
+		switch (i_params->dmd1_rslts.standard) {
+		case STV0900_DVBS2_STANDARD:
+			i_params->dmd1_rslts.spectrum = stv0900_get_bits(i_params, F0900_P1_SPECINV_DEMOD);
+			if (i_params->dmd1_rslts.modcode <= STV0900_QPSK_910)
+				i_params->dmd1_rslts.modulation = STV0900_QPSK;
+			else if (i_params->dmd1_rslts.modcode <= STV0900_8PSK_910)
+				i_params->dmd1_rslts.modulation = STV0900_8PSK;
+			else if (i_params->dmd1_rslts.modcode <= STV0900_16APSK_910)
+				i_params->dmd1_rslts.modulation = STV0900_16APSK;
+			else if (i_params->dmd1_rslts.modcode <= STV0900_32APSK_910)
+				i_params->dmd1_rslts.modulation = STV0900_32APSK;
+			else
+				i_params->dmd1_rslts.modulation = STV0900_UNKNOWN;
+			break;
+		case STV0900_DVBS1_STANDARD:
+		case STV0900_DSS_STANDARD:
+			i_params->dmd1_rslts.spectrum = stv0900_get_bits(i_params, F0900_P1_IQINV);
+			i_params->dmd1_rslts.modulation = STV0900_QPSK;
+			break;
+		default:
+			break;
+		}
+
+		if ((i_params->dmd1_srch_algo == STV0900_BLIND_SEARCH) || (i_params->dmd1_symbol_rate < 10000000)) {
+			offsetFreq =	i_params->dmd1_rslts.frequency - i_params->tuner1_freq;
+			i_params->tuner1_freq = stv0900_get_tuner_freq(fe);
+			if (ABS(offsetFreq) <= ((i_params->dmd1_srch_range / 2000) + 500))
+				range = STV0900_RANGEOK;
+			else
+				if (ABS(offsetFreq) <= (stv0900_carrier_width(i_params->dmd1_rslts.symbol_rate, i_params->dmd1_rslts.rolloff) / 2000))
+					range = STV0900_RANGEOK;
+				else
+					range = STV0900_OUTOFRANGE;
+
+		} else {
+			if (ABS(offsetFreq) <= ((i_params->dmd1_srch_range / 2000) + 500))
+				range = STV0900_RANGEOK;
+			else
+				range = STV0900_OUTOFRANGE;
+		}
+		break;
+	case STV0900_DEMOD_2:
+		if (i_params->dmd2_srch_algo == STV0900_BLIND_SEARCH) {
+			timing = stv0900_read_reg(i_params, R0900_P2_TMGREG2);
+			i = 0;
+			stv0900_write_reg(i_params, R0900_P2_SFRSTEP, 0x5c);
+
+			while ((i <= 50) && (timing != 0) && (timing != 0xff)) {
+				timing = stv0900_read_reg(i_params, R0900_P2_TMGREG2);
+				msleep(5);
+				i += 5;
+			}
+		}
+
+		i_params->dmd2_rslts.standard = stv0900_get_standard(fe, demod);
+		i_params->dmd2_rslts.frequency = stv0900_get_tuner_freq(fe);
+		offsetFreq = stv0900_get_carr_freq(i_params, i_params->mclk, demod) / 1000;
+		i_params->dmd2_rslts.frequency += offsetFreq;
+		i_params->dmd2_rslts.symbol_rate = stv0900_get_symbol_rate(i_params, i_params->mclk, demod);
+		srate_offset = stv0900_get_timing_offst(i_params, i_params->dmd2_rslts.symbol_rate, demod);
+		i_params->dmd2_rslts.symbol_rate += srate_offset;
+		i_params->dmd2_rslts.fec = stv0900_get_vit_fec(i_params, demod);
+		i_params->dmd2_rslts.modcode = stv0900_get_bits(i_params, F0900_P2_DEMOD_MODCOD);
+		i_params->dmd2_rslts.pilot = stv0900_get_bits(i_params, F0900_P2_DEMOD_TYPE) & 0x01;
+		i_params->dmd2_rslts.frame_length = ((u32)stv0900_get_bits(i_params, F0900_P2_DEMOD_TYPE)) >> 1;
+		i_params->dmd2_rslts.rolloff = stv0900_get_bits(i_params, F0900_P2_ROLLOFF_STATUS);
+		switch (i_params->dmd2_rslts.standard) {
+		case STV0900_DVBS2_STANDARD:
+			i_params->dmd2_rslts.spectrum = stv0900_get_bits(i_params, F0900_P2_SPECINV_DEMOD);
+			if (i_params->dmd2_rslts.modcode <= STV0900_QPSK_910)
+				i_params->dmd2_rslts.modulation = STV0900_QPSK;
+			else if (i_params->dmd2_rslts.modcode <= STV0900_8PSK_910)
+				i_params->dmd2_rslts.modulation = STV0900_8PSK;
+			else if (i_params->dmd2_rslts.modcode <= STV0900_16APSK_910)
+				i_params->dmd2_rslts.modulation = STV0900_16APSK;
+			else if (i_params->dmd2_rslts.modcode <= STV0900_32APSK_910)
+				i_params->dmd2_rslts.modulation = STV0900_32APSK;
+			else
+				i_params->dmd2_rslts.modulation = STV0900_UNKNOWN;
+			break;
+		case STV0900_DVBS1_STANDARD:
+		case STV0900_DSS_STANDARD:
+			i_params->dmd2_rslts.spectrum = stv0900_get_bits(i_params, F0900_P2_IQINV);
+			i_params->dmd2_rslts.modulation = STV0900_QPSK;
+			break;
+		default:
+			break;
+		}
+
+		if ((i_params->dmd2_srch_algo == STV0900_BLIND_SEARCH) || (i_params->dmd2_symbol_rate < 10000000)) {
+			offsetFreq =	i_params->dmd2_rslts.frequency - i_params->tuner2_freq;
+			i_params->tuner2_freq = stv0900_get_tuner_freq(fe);
+
+			if (ABS(offsetFreq) <= ((i_params->dmd2_srch_range / 2000) + 500))
+				range = STV0900_RANGEOK;
+			else
+				if (ABS(offsetFreq) <= (stv0900_carrier_width(i_params->dmd2_rslts.symbol_rate, i_params->dmd2_rslts.rolloff) / 2000))
+					range = STV0900_RANGEOK;
+				else
+					range = STV0900_OUTOFRANGE;
+		} else {
+			if (ABS(offsetFreq) <= ((i_params->dmd2_srch_range / 2000) + 500))
+				range = STV0900_RANGEOK;
+			else
+				range = STV0900_OUTOFRANGE;
+		}
+
+		break;
+	}
+
+	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 *i_params = state->internal;
+	enum fe_stv0900_demod_num demod = state->demod;
+
+	s32 srate, demod_timeout,
+		fec_timeout, freq1, freq0;
+	enum fe_stv0900_signal_type signal_type = STV0900_NODATA;;
+
+	switch (demod) {
+	case STV0900_DEMOD_1:
+	default:
+		i_params->dmd1_rslts.locked = FALSE;
+		if (stv0900_get_bits(i_params, F0900_P1_HEADER_MODE) == STV0900_DVBS_FOUND) {
+			srate = stv0900_get_symbol_rate(i_params, i_params->mclk, demod);
+			srate += stv0900_get_timing_offst(i_params, srate, demod);
+			if (i_params->dmd1_srch_algo == STV0900_BLIND_SEARCH)
+				stv0900_set_symbol_rate(i_params, i_params->mclk, srate, demod);
+
+			stv0900_get_lock_timeout(&demod_timeout, &fec_timeout, srate, STV0900_WARM_START);
+			freq1 = stv0900_read_reg(i_params, R0900_P1_CFR2);
+			freq0 = stv0900_read_reg(i_params, R0900_P1_CFR1);
+			stv0900_write_bits(i_params, F0900_P1_CFR_AUTOSCAN, 0);
+			stv0900_write_bits(i_params, F0900_P1_SPECINV_CONTROL, STV0900_IQ_FORCE_SWAPPED);
+			stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x1C);
+			stv0900_write_reg(i_params, R0900_P1_CFRINIT1, freq1);
+			stv0900_write_reg(i_params, R0900_P1_CFRINIT0, freq0);
+			stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x18);
+			if (stv0900_wait_for_lock(i_params, demod, demod_timeout, fec_timeout) == TRUE) {
+				i_params->dmd1_rslts.locked = TRUE;
+				signal_type = stv0900_get_signal_params(fe);
+				stv0900_track_optimization(fe);
+			} else {
+				stv0900_write_bits(i_params, F0900_P1_SPECINV_CONTROL, STV0900_IQ_FORCE_NORMAL);
+				stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x1c);
+				stv0900_write_reg(i_params, R0900_P1_CFRINIT1, freq1);
+				stv0900_write_reg(i_params, R0900_P1_CFRINIT0, freq0);
+				stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x18);
+				if (stv0900_wait_for_lock(i_params, demod, demod_timeout, fec_timeout) == TRUE) {
+					i_params->dmd1_rslts.locked = TRUE;
+					signal_type = stv0900_get_signal_params(fe);
+					stv0900_track_optimization(fe);
+				}
+
+			}
+
+		} else
+			i_params->dmd1_rslts.locked = FALSE;
+
+		break;
+	case STV0900_DEMOD_2:
+		i_params->dmd2_rslts.locked = FALSE;
+		if (stv0900_get_bits(i_params, F0900_P2_HEADER_MODE) == STV0900_DVBS_FOUND) {
+			srate = stv0900_get_symbol_rate(i_params, i_params->mclk, demod);
+			srate += stv0900_get_timing_offst(i_params, srate, demod);
+
+			if (i_params->dmd2_srch_algo == STV0900_BLIND_SEARCH)
+				stv0900_set_symbol_rate(i_params, i_params->mclk, srate, demod);
+
+			stv0900_get_lock_timeout(&demod_timeout, &fec_timeout, srate, STV0900_WARM_START);
+			freq1 = stv0900_read_reg(i_params, R0900_P2_CFR2);
+			freq0 = stv0900_read_reg(i_params, R0900_P2_CFR1);
+			stv0900_write_bits(i_params, F0900_P2_CFR_AUTOSCAN, 0);
+			stv0900_write_bits(i_params, F0900_P2_SPECINV_CONTROL, STV0900_IQ_FORCE_SWAPPED);
+			stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x1C);
+			stv0900_write_reg(i_params, R0900_P2_CFRINIT1, freq1);
+			stv0900_write_reg(i_params, R0900_P2_CFRINIT0, freq0);
+			stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x18);
+
+			if (stv0900_wait_for_lock(i_params, demod, demod_timeout, fec_timeout) == TRUE) {
+				i_params->dmd2_rslts.locked = TRUE;
+				signal_type = stv0900_get_signal_params(fe);
+				stv0900_track_optimization(fe);
+			} else {
+				stv0900_write_bits(i_params, F0900_P2_SPECINV_CONTROL, STV0900_IQ_FORCE_NORMAL);
+				stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x1c);
+				stv0900_write_reg(i_params, R0900_P2_CFRINIT1, freq1);
+				stv0900_write_reg(i_params, R0900_P2_CFRINIT0, freq0);
+				stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x18);
+
+				if (stv0900_wait_for_lock(i_params, demod, demod_timeout, fec_timeout) == TRUE) {
+					i_params->dmd2_rslts.locked = TRUE;
+					signal_type = stv0900_get_signal_params(fe);
+					stv0900_track_optimization(fe);
+				}
+
+			}
+
+		} else
+			i_params->dmd1_rslts.locked = FALSE;
+
+		break;
+	}
+
+	return signal_type;
+}
+
+static u16 stv0900_blind_check_agc2_min_level(struct stv0900_internal *i_params,
+					enum fe_stv0900_demod_num demod)
+{
+	u32 minagc2level = 0xffff,
+		agc2level,
+		init_freq, freq_step;
+
+	s32 i, j, nb_steps, direction;
+
+	dprintk(KERN_INFO "%s\n", __func__);
+
+	switch (demod) {
+	case STV0900_DEMOD_1:
+	default:
+		stv0900_write_reg(i_params, R0900_P1_AGC2REF, 0x38);
+		stv0900_write_bits(i_params, F0900_P1_SCAN_ENABLE, 1);
+		stv0900_write_bits(i_params, F0900_P1_CFR_AUTOSCAN, 1);
+
+		stv0900_write_reg(i_params, R0900_P1_SFRUP1, 0x83);
+		stv0900_write_reg(i_params, R0900_P1_SFRUP0, 0xc0);
+
+		stv0900_write_reg(i_params, R0900_P1_SFRLOW1, 0x82);
+		stv0900_write_reg(i_params, R0900_P1_SFRLOW0, 0xa0);
+		stv0900_write_reg(i_params, R0900_P1_DMDT0M, 0x0);
+
+		stv0900_set_symbol_rate(i_params, i_params->mclk, 1000000, demod);
+		nb_steps = -1 + (i_params->dmd1_srch_range / 1000000);
+		nb_steps /= 2;
+		nb_steps = (2 * nb_steps) + 1;
+
+		if (nb_steps < 0)
+			nb_steps = 1;
+
+		direction = 1;
+
+		freq_step = (1000000 << 8) / (i_params->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(i_params, R0900_P1_DMDISTATE, 0x5C);
+			stv0900_write_reg(i_params, R0900_P1_CFRINIT1, (init_freq >> 8) & 0xff);
+			stv0900_write_reg(i_params, R0900_P1_CFRINIT0, init_freq  & 0xff);
+			stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x58);
+			msleep(10);
+			agc2level = 0;
+
+			for (j = 0; j < 10; j++)
+				agc2level += (stv0900_read_reg(i_params, R0900_P1_AGC2I1) << 8)
+						| stv0900_read_reg(i_params, R0900_P1_AGC2I0);
+
+			agc2level /= 10;
+
+			if (agc2level < minagc2level)
+				minagc2level = agc2level;
+		}
+		break;
+	case STV0900_DEMOD_2:
+		stv0900_write_reg(i_params, R0900_P2_AGC2REF, 0x38);
+		stv0900_write_bits(i_params, F0900_P2_SCAN_ENABLE, 1);
+		stv0900_write_bits(i_params, F0900_P2_CFR_AUTOSCAN, 1);
+		stv0900_write_reg(i_params, R0900_P2_SFRUP1, 0x83);
+		stv0900_write_reg(i_params, R0900_P2_SFRUP0, 0xc0);
+		stv0900_write_reg(i_params, R0900_P2_SFRLOW1, 0x82);
+		stv0900_write_reg(i_params, R0900_P2_SFRLOW0, 0xa0);
+		stv0900_write_reg(i_params, R0900_P2_DMDT0M, 0x0);
+		stv0900_set_symbol_rate(i_params, i_params->mclk, 1000000, demod);
+		nb_steps = -1 + (i_params->dmd2_srch_range / 1000000);
+		nb_steps /= 2;
+		nb_steps = (2 * nb_steps) + 1;
+
+		if (nb_steps < 0)
+			nb_steps = 1;
+
+		direction = 1;
+		freq_step = (1000000 << 8) / (i_params->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(i_params, R0900_P2_DMDISTATE, 0x5C);
+			stv0900_write_reg(i_params, R0900_P2_CFRINIT1, (init_freq >> 8) & 0xff);
+			stv0900_write_reg(i_params, R0900_P2_CFRINIT0, init_freq  & 0xff);
+			stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x58);
+
+			msleep(10);
+			agc2level = 0;
+			for (j = 0; j < 10; j++)
+				agc2level += (stv0900_read_reg(i_params, R0900_P2_AGC2I1) << 8)
+						| stv0900_read_reg(i_params, R0900_P2_AGC2I0);
+
+			agc2level /= 10;
+
+			if (agc2level < minagc2level)
+				minagc2level = agc2level;
+		}
+		break;
+	}
+
+	return (u16)minagc2level;
+}
+
+static u32 stv0900_search_srate_coarse(struct dvb_frontend *fe)
+{
+	struct stv0900_state *state = fe->demodulator_priv;
+	struct stv0900_internal *i_params = state->internal;
+	enum fe_stv0900_demod_num demod = state->demod;
+	int timingLock = FALSE;
+	s32 i, timingcpt = 0,
+		direction = 1,
+		nb_steps,
+		current_step = 0,
+		tuner_freq;
+
+	u32 coarse_srate = 0, agc2_integr = 0, currier_step = 1200;
+
+	switch (demod) {
+	case STV0900_DEMOD_1:
+	default:
+		stv0900_write_bits(i_params, F0900_P1_I2C_DEMOD_MODE, 0x1F);
+		stv0900_write_reg(i_params, R0900_P1_TMGCFG, 0x12);
+		stv0900_write_reg(i_params, R0900_P1_TMGTHRISE, 0xf0);
+		stv0900_write_reg(i_params, R0900_P1_TMGTHFALL, 0xe0);
+		stv0900_write_bits(i_params, F0900_P1_SCAN_ENABLE, 1);
+		stv0900_write_bits(i_params, F0900_P1_CFR_AUTOSCAN, 1);
+		stv0900_write_reg(i_params, R0900_P1_SFRUP1, 0x83);
+		stv0900_write_reg(i_params, R0900_P1_SFRUP0, 0xc0);
+		stv0900_write_reg(i_params, R0900_P1_SFRLOW1, 0x82);
+		stv0900_write_reg(i_params, R0900_P1_SFRLOW0, 0xa0);
+		stv0900_write_reg(i_params, R0900_P1_DMDT0M, 0x0);
+		stv0900_write_reg(i_params, R0900_P1_AGC2REF, 0x50);
+
+		if (i_params->chip_id >= 0x20) {
+			stv0900_write_reg(i_params, R0900_P1_CARFREQ, 0x6a);
+			stv0900_write_reg(i_params, R0900_P1_SFRSTEP, 0x95);
+		} else {
+			stv0900_write_reg(i_params, R0900_P1_CARFREQ, 0xed);
+			stv0900_write_reg(i_params, R0900_P1_SFRSTEP, 0x73);
+		}
+
+		if (i_params->dmd1_symbol_rate <= 2000000)
+			currier_step = 1000;
+		else if (i_params->dmd1_symbol_rate <= 5000000)
+			currier_step = 2000;
+		else if (i_params->dmd1_symbol_rate <= 12000000)
+			currier_step = 3000;
+		else
+			currier_step = 5000;
+
+		nb_steps = -1 + ((i_params->dmd1_srch_range / 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 = (i_params->dmd1_srch_range / 1000) / 10;
+		}
+
+		current_step = 0;
+
+		direction = 1;
+		tuner_freq = i_params->tuner1_freq;
+
+		while ((timingLock == FALSE) && (current_step < nb_steps)) {
+			stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x5F);
+			stv0900_write_bits(i_params, F0900_P1_I2C_DEMOD_MODE, 0x0);
+
+			msleep(50);
+
+			for (i = 0; i < 10; i++) {
+				if (stv0900_get_bits(i_params, F0900_P1_TMGLOCK_QUALITY) >= 2)
+					timingcpt++;
+
+				agc2_integr += (stv0900_read_reg(i_params, R0900_P1_AGC2I1) << 8) | stv0900_read_reg(i_params, R0900_P1_AGC2I0);
+
+			}
+
+			agc2_integr /= 10;
+			coarse_srate = stv0900_get_symbol_rate(i_params, i_params->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 < 0x1F00) && (coarse_srate < 55000000) && (coarse_srate > 850000)) {
+				timingLock = TRUE;
+			}
+
+			else if (current_step < nb_steps) {
+				if (direction > 0)
+					tuner_freq += (current_step * currier_step);
+				else
+					tuner_freq -= (current_step * currier_step);
+
+				stv0900_set_tuner(fe, tuner_freq, i_params->tuner1_bw);
+			}
+		}
+
+		if (timingLock == FALSE)
+			coarse_srate = 0;
+		else
+			coarse_srate = stv0900_get_symbol_rate(i_params, i_params->mclk, demod);
+		break;
+	case STV0900_DEMOD_2:
+		stv0900_write_bits(i_params, F0900_P2_I2C_DEMOD_MODE, 0x1F);
+		stv0900_write_reg(i_params, R0900_P2_TMGCFG, 0x12);
+		stv0900_write_reg(i_params, R0900_P2_TMGTHRISE, 0xf0);
+		stv0900_write_reg(i_params, R0900_P2_TMGTHFALL, 0xe0);
+		stv0900_write_bits(i_params, F0900_P2_SCAN_ENABLE, 1);
+		stv0900_write_bits(i_params, F0900_P2_CFR_AUTOSCAN, 1);
+		stv0900_write_reg(i_params, R0900_P2_SFRUP1, 0x83);
+		stv0900_write_reg(i_params, R0900_P2_SFRUP0, 0xc0);
+		stv0900_write_reg(i_params, R0900_P2_SFRLOW1, 0x82);
+		stv0900_write_reg(i_params, R0900_P2_SFRLOW0, 0xa0);
+		stv0900_write_reg(i_params, R0900_P2_DMDT0M, 0x0);
+		stv0900_write_reg(i_params, R0900_P2_AGC2REF, 0x50);
+
+		if (i_params->chip_id >= 0x20) {
+			stv0900_write_reg(i_params, R0900_P2_CARFREQ, 0x6a);
+			stv0900_write_reg(i_params, R0900_P2_SFRSTEP, 0x95);
+		} else {
+			stv0900_write_reg(i_params, R0900_P2_CARFREQ, 0xed);
+			stv0900_write_reg(i_params, R0900_P2_SFRSTEP, 0x73);
+		}
+
+		if (i_params->dmd2_symbol_rate <= 2000000)
+			currier_step = 1000;
+		else if (i_params->dmd2_symbol_rate <= 5000000)
+			currier_step = 2000;
+		else if (i_params->dmd2_symbol_rate <= 12000000)
+			currier_step = 3000;
+		else
+			currier_step = 5000;
+
+
+		nb_steps = -1 + ((i_params->dmd2_srch_range / 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 = (i_params->dmd2_srch_range / 1000) / 10;
+		}
+
+		current_step = 0;
+		direction = 1;
+		tuner_freq = i_params->tuner2_freq;
+
+		while ((timingLock == FALSE) && (current_step < nb_steps)) {
+			stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x5F);
+			stv0900_write_bits(i_params, F0900_P2_I2C_DEMOD_MODE, 0x0);
+
+			msleep(50);
+			timingcpt = 0;
+
+			for (i = 0; i < 20; i++) {
+				if (stv0900_get_bits(i_params, F0900_P2_TMGLOCK_QUALITY) >= 2)
+					timingcpt++;
+				agc2_integr += (stv0900_read_reg(i_params, R0900_P2_AGC2I1) << 8)
+								| stv0900_read_reg(i_params, R0900_P2_AGC2I0);
+			}
+
+			agc2_integr /= 20;
+			coarse_srate = stv0900_get_symbol_rate(i_params, i_params->mclk, demod);
+			if ((timingcpt >= 10) && (agc2_integr < 0x1F00) && (coarse_srate < 55000000) && (coarse_srate > 850000))
+				timingLock = TRUE;
+			else {
+				current_step++;
+				direction *= -1;
+
+				if (direction > 0)
+					tuner_freq += (current_step * currier_step);
+				else
+					tuner_freq -= (current_step * currier_step);
+
+				stv0900_set_tuner(fe, tuner_freq, i_params->tuner2_bw);
+			}
+		}
+
+		if (timingLock == FALSE)
+			coarse_srate = 0;
+		else
+			coarse_srate = stv0900_get_symbol_rate(i_params, i_params->mclk, demod);
+		break;
+	}
+
+	return coarse_srate;
+}
+
+static u32 stv0900_search_srate_fine(struct dvb_frontend *fe)
+{
+	struct stv0900_state *state = fe->demodulator_priv;
+	struct stv0900_internal *i_params = state->internal;
+	enum fe_stv0900_demod_num demod = state->demod;
+	u32 coarse_srate,
+	coarse_freq,
+	symb;
+
+	coarse_srate = stv0900_get_symbol_rate(i_params, i_params->mclk, demod);
+
+	switch (demod) {
+	case STV0900_DEMOD_1:
+	default:
+		coarse_freq = (stv0900_read_reg(i_params, R0900_P1_CFR2) << 8)
+						| stv0900_read_reg(i_params, R0900_P1_CFR1);
+		symb = 13 * (coarse_srate / 10);
+
+		if (symb < i_params->dmd1_symbol_rate)
+			coarse_srate = 0;
+		else {
+			stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x1F);
+			stv0900_write_reg(i_params, R0900_P1_TMGCFG2, 0x01);
+			stv0900_write_reg(i_params, R0900_P1_TMGTHRISE, 0x20);
+			stv0900_write_reg(i_params, R0900_P1_TMGTHFALL, 0x00);
+			stv0900_write_reg(i_params, R0900_P1_TMGCFG, 0xd2);
+			stv0900_write_bits(i_params, F0900_P1_CFR_AUTOSCAN, 0);
+
+			if (i_params->chip_id >= 0x20)
+				stv0900_write_reg(i_params, R0900_P1_CARFREQ, 0x49);
+			else
+				stv0900_write_reg(i_params, R0900_P1_CARFREQ, 0xed);
+
+			if (coarse_srate > 3000000) {
+				symb = 13 * (coarse_srate / 10);
+				symb = (symb / 1000) * 65536;
+				symb /= (i_params->mclk / 1000);
+				stv0900_write_reg(i_params, R0900_P1_SFRUP1, (symb >> 8) & 0x7F);
+				stv0900_write_reg(i_params, R0900_P1_SFRUP0, (symb & 0xFF));
+
+				symb = 10 * (coarse_srate / 13);
+				symb = (symb / 1000) * 65536;
+				symb /= (i_params->mclk / 1000);
+
+				stv0900_write_reg(i_params, R0900_P1_SFRLOW1, (symb >> 8) & 0x7F);
+				stv0900_write_reg(i_params, R0900_P1_SFRLOW0, (symb & 0xFF));
+
+				symb = (coarse_srate / 1000) * 65536;
+				symb /= (i_params->mclk / 1000);
+				stv0900_write_reg(i_params, R0900_P1_SFRINIT1, (symb >> 8) & 0xFF);
+				stv0900_write_reg(i_params, R0900_P1_SFRINIT0, (symb & 0xFF));
+			} else {
+				symb = 13 * (coarse_srate / 10);
+				symb = (symb / 100) * 65536;
+				symb /= (i_params->mclk / 100);
+				stv0900_write_reg(i_params, R0900_P1_SFRUP1, (symb >> 8) & 0x7F);
+				stv0900_write_reg(i_params, R0900_P1_SFRUP0, (symb & 0xFF));
+
+				symb = 10 * (coarse_srate / 14);
+				symb = (symb / 100) * 65536;
+				symb /= (i_params->mclk / 100);
+				stv0900_write_reg(i_params, R0900_P1_SFRLOW1, (symb >> 8) & 0x7F);
+				stv0900_write_reg(i_params, R0900_P1_SFRLOW0, (symb & 0xFF));
+
+				symb = (coarse_srate / 100) * 65536;
+				symb /= (i_params->mclk / 100);
+				stv0900_write_reg(i_params, R0900_P1_SFRINIT1, (symb >> 8) & 0xFF);
+				stv0900_write_reg(i_params, R0900_P1_SFRINIT0, (symb & 0xFF));
+			}
+
+			stv0900_write_reg(i_params, R0900_P1_DMDT0M, 0x20);
+			stv0900_write_reg(i_params, R0900_P1_CFRINIT1, (coarse_freq >> 8) & 0xff);
+			stv0900_write_reg(i_params, R0900_P1_CFRINIT0, coarse_freq  & 0xff);
+			stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x15);
+		}
+		break;
+	case STV0900_DEMOD_2:
+		coarse_freq = (stv0900_read_reg(i_params, R0900_P2_CFR2) << 8)
+						| stv0900_read_reg(i_params, R0900_P2_CFR1);
+
+		symb = 13 * (coarse_srate / 10);
+
+		if (symb < i_params->dmd2_symbol_rate)
+			coarse_srate = 0;
+		else {
+			stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x1F);
+			stv0900_write_reg(i_params, R0900_P2_TMGCFG2, 0x01);
+			stv0900_write_reg(i_params, R0900_P2_TMGTHRISE, 0x20);
+			stv0900_write_reg(i_params, R0900_P2_TMGTHFALL, 0x00);
+			stv0900_write_reg(i_params, R0900_P2_TMGCFG, 0xd2);
+			stv0900_write_bits(i_params, F0900_P2_CFR_AUTOSCAN, 0);
+
+			if (i_params->chip_id >= 0x20)
+				stv0900_write_reg(i_params, R0900_P2_CARFREQ, 0x49);
+			else
+				stv0900_write_reg(i_params, R0900_P2_CARFREQ, 0xed);
+
+			if (coarse_srate > 3000000) {
+				symb = 13 * (coarse_srate / 10);
+				symb = (symb / 1000) * 65536;
+				symb /= (i_params->mclk / 1000);
+				stv0900_write_reg(i_params, R0900_P2_SFRUP1, (symb >> 8) & 0x7F);
+				stv0900_write_reg(i_params, R0900_P2_SFRUP0, (symb & 0xFF));
+
+				symb = 10 * (coarse_srate / 13);
+				symb = (symb / 1000) * 65536;
+				symb /= (i_params->mclk / 1000);
+
+				stv0900_write_reg(i_params, R0900_P2_SFRLOW1, (symb >> 8) & 0x7F);
+				stv0900_write_reg(i_params, R0900_P2_SFRLOW0, (symb & 0xFF));
+
+				symb = (coarse_srate / 1000) * 65536;
+				symb /= (i_params->mclk / 1000);
+				stv0900_write_reg(i_params, R0900_P2_SFRINIT1, (symb >> 8) & 0xFF);
+				stv0900_write_reg(i_params, R0900_P2_SFRINIT0, (symb & 0xFF));
+			} else {
+				symb = 13 * (coarse_srate / 10);
+				symb = (symb / 100) * 65536;
+				symb /= (i_params->mclk / 100);
+				stv0900_write_reg(i_params, R0900_P2_SFRUP1, (symb >> 8) & 0x7F);
+				stv0900_write_reg(i_params, R0900_P2_SFRUP0, (symb & 0xFF));
+
+				symb = 10 * (coarse_srate / 14);
+				symb = (symb / 100) * 65536;
+				symb /= (i_params->mclk / 100);
+				stv0900_write_reg(i_params, R0900_P2_SFRLOW1, (symb >> 8) & 0x7F);
+				stv0900_write_reg(i_params, R0900_P2_SFRLOW0, (symb & 0xFF));
+
+				symb = (coarse_srate / 100) * 65536;
+				symb /= (i_params->mclk / 100);
+				stv0900_write_reg(i_params, R0900_P2_SFRINIT1, (symb >> 8) & 0xFF);
+				stv0900_write_reg(i_params, R0900_P2_SFRINIT0, (symb & 0xFF));
+			}
+
+			stv0900_write_reg(i_params, R0900_P2_DMDT0M, 0x20);
+			stv0900_write_reg(i_params, R0900_P2_CFRINIT1, (coarse_freq >> 8) & 0xff);
+			stv0900_write_reg(i_params, R0900_P2_CFRINIT0, coarse_freq  & 0xff);
+			stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x15);
+		}
+
+		break;
+	}
+
+	return coarse_srate;
+}
+
+static int stv0900_blind_search_algo(struct dvb_frontend *fe)
+{
+	struct stv0900_state *state = fe->demodulator_priv;
+	struct stv0900_internal *i_params = 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;
+	int lock = FALSE, coarse_fail = FALSE;
+	s32 demod_timeout = 500, fec_timeout = 50, kref_tmg_reg, fail_cpt, i, agc2_overflow;
+	u16 agc2_integr;
+	u8 dstatus2;
+
+	dprintk(KERN_INFO "%s\n", __func__);
+
+	if (i_params->chip_id < 0x20) {
+		k_ref_tmg_max = 233;
+		k_ref_tmg_min = 143;
+	} else {
+		k_ref_tmg_max = 120;
+		k_ref_tmg_min = 30;
+	}
+
+	agc2_integr = stv0900_blind_check_agc2_min_level(i_params, demod);
+
+	if (agc2_integr > STV0900_BLIND_SEARCH_AGC2_TH) {
+		lock = FALSE;
+
+	} else {
+		switch (demod) {
+		case STV0900_DEMOD_1:
+		default:
+			if (i_params->chip_id == 0x10)
+				stv0900_write_reg(i_params, R0900_P1_CORRELEXP, 0xAA);
+
+			if (i_params->chip_id < 0x20)
+				stv0900_write_reg(i_params, R0900_P1_CARHDR, 0x55);
+
+			stv0900_write_reg(i_params, R0900_P1_CARCFG, 0xC4);
+			stv0900_write_reg(i_params, R0900_P1_RTCS2, 0x44);
+
+			if (i_params->chip_id >= 0x20) {
+				stv0900_write_reg(i_params, R0900_P1_EQUALCFG, 0x41);
+				stv0900_write_reg(i_params, R0900_P1_FFECFG, 0x41);
+				stv0900_write_reg(i_params, R0900_P1_VITSCALE, 0x82);
+				stv0900_write_reg(i_params, R0900_P1_VAVSRVIT, 0x0);
+			}
+
+			kref_tmg_reg = R0900_P1_KREFTMG;
+			break;
+		case STV0900_DEMOD_2:
+			if (i_params->chip_id == 0x10)
+				stv0900_write_reg(i_params, R0900_P2_CORRELEXP, 0xAA);
+
+			if (i_params->chip_id < 0x20)
+				stv0900_write_reg(i_params, R0900_P2_CARHDR, 0x55);
+
+			stv0900_write_reg(i_params, R0900_P2_CARCFG, 0xC4);
+			stv0900_write_reg(i_params, R0900_P2_RTCS2, 0x44);
+
+			if (i_params->chip_id >= 0x20) {
+				stv0900_write_reg(i_params, R0900_P2_EQUALCFG, 0x41);
+				stv0900_write_reg(i_params, R0900_P2_FFECFG, 0x41);
+				stv0900_write_reg(i_params, R0900_P2_VITSCALE, 0x82);
+				stv0900_write_reg(i_params, R0900_P2_VAVSRVIT, 0x0);
+			}
+
+			kref_tmg_reg = R0900_P2_KREFTMG;
+			break;
+		}
+
+		k_ref_tmg = k_ref_tmg_max;
+
+		do {
+			stv0900_write_reg(i_params, kref_tmg_reg, 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(i_params, demod, demod_timeout);
+				} else
+					lock = FALSE;
+			} else {
+				fail_cpt = 0;
+				agc2_overflow = 0;
+
+				switch (demod) {
+				case STV0900_DEMOD_1:
+				default:
+					for (i = 0; i < 10; i++) {
+						agc2_integr = (stv0900_read_reg(i_params, R0900_P1_AGC2I1) << 8)
+								| stv0900_read_reg(i_params, R0900_P1_AGC2I0);
+
+						if (agc2_integr >= 0xff00)
+							agc2_overflow++;
+
+						dstatus2 = stv0900_read_reg(i_params, R0900_P1_DSTATUS2);
+
+						if (((dstatus2 & 0x1) == 0x1) && ((dstatus2 >> 7) == 1))
+							fail_cpt++;
+					}
+					break;
+				case STV0900_DEMOD_2:
+					for (i = 0; i < 10; i++) {
+						agc2_integr = (stv0900_read_reg(i_params, R0900_P2_AGC2I1) << 8)
+								| stv0900_read_reg(i_params, R0900_P2_AGC2I0);
+
+						if (agc2_integr >= 0xff00)
+							agc2_overflow++;
+
+						dstatus2 = stv0900_read_reg(i_params, R0900_P2_DSTATUS2);
+
+						if (((dstatus2 & 0x1) == 0x1) && ((dstatus2 >> 7) == 1))
+							fail_cpt++;
+					}
+					break;
+				}
+
+				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 *i_params,
+					enum fe_stv0900_demod_num demod)
+{
+	s32 vth_reg;
+
+	dprintk(KERN_INFO "%s\n", __func__);
+
+	dmd_reg(vth_reg, R0900_P1_VTH12, R0900_P2_VTH12);
+
+	stv0900_write_reg(i_params, vth_reg++, 0x96);
+	stv0900_write_reg(i_params, vth_reg++, 0x64);
+	stv0900_write_reg(i_params, vth_reg++, 0x36);
+	stv0900_write_reg(i_params, vth_reg++, 0x23);
+	stv0900_write_reg(i_params, vth_reg++, 0x1E);
+	stv0900_write_reg(i_params, vth_reg++, 0x19);
+}
+
+static void stv0900_set_search_standard(struct stv0900_internal *i_params,
+					enum fe_stv0900_demod_num demod)
+{
+
+	int sstndrd;
+
+	dprintk(KERN_INFO "%s\n", __func__);
+
+	sstndrd = i_params->dmd1_srch_standard;
+	if (demod == 1)
+		sstndrd = i_params->dmd2_srch_stndrd;
+
+	switch (sstndrd) {
+	case STV0900_SEARCH_DVBS1:
+		dprintk("Search Standard = DVBS1\n");
+		break;
+	case STV0900_SEARCH_DSS:
+		dprintk("Search Standard = DSS\n");
+	case STV0900_SEARCH_DVBS2:
+		break;
+		dprintk("Search Standard = DVBS2\n");
+	case STV0900_AUTO_SEARCH:
+	default:
+		dprintk("Search Standard = AUTO\n");
+		break;
+	}
+
+	switch (demod) {
+	case STV0900_DEMOD_1:
+	default:
+		switch (i_params->dmd1_srch_standard) {
+		case STV0900_SEARCH_DVBS1:
+		case STV0900_SEARCH_DSS:
+			stv0900_write_bits(i_params, F0900_P1_DVBS1_ENABLE, 1);
+			stv0900_write_bits(i_params, F0900_P1_DVBS2_ENABLE, 0);
+
+			stv0900_write_bits(i_params, F0900_STOP_CLKVIT1, 0);
+			stv0900_write_reg(i_params, R0900_P1_ACLC, 0x1a);
+			stv0900_write_reg(i_params, R0900_P1_BCLC, 0x09);
+			stv0900_write_reg(i_params, R0900_P1_CAR2CFG, 0x22);
+
+			stv0900_set_viterbi_acq(i_params, demod);
+			stv0900_set_viterbi_standard(i_params,
+						i_params->dmd1_srch_standard,
+						i_params->dmd1_fec, demod);
+
+			break;
+		case STV0900_SEARCH_DVBS2:
+			stv0900_write_bits(i_params, F0900_P1_DVBS1_ENABLE, 0);
+			stv0900_write_bits(i_params, F0900_P1_DVBS2_ENABLE, 0);
+			stv0900_write_bits(i_params, F0900_P1_DVBS1_ENABLE, 1);
+			stv0900_write_bits(i_params, F0900_P1_DVBS2_ENABLE, 1);
+			stv0900_write_bits(i_params, F0900_STOP_CLKVIT1, 1);
+			stv0900_write_reg(i_params, R0900_P1_ACLC, 0x1a);
+			stv0900_write_reg(i_params, R0900_P1_BCLC, 0x09);
+			stv0900_write_reg(i_params, R0900_P1_CAR2CFG, 0x26);
+			if (i_params->demod_mode != STV0900_SINGLE) {
+				if (i_params->chip_id <= 0x11)
+					stv0900_stop_all_s2_modcod(i_params, demod);
+				else
+					stv0900_activate_s2_modcode(i_params, demod);
+
+			} else
+				stv0900_activate_s2_modcode_single(i_params, demod);
+
+			stv0900_set_viterbi_tracq(i_params, demod);
+
+			break;
+		case STV0900_AUTO_SEARCH:
+		default:
+			stv0900_write_bits(i_params, F0900_P1_DVBS1_ENABLE, 0);
+			stv0900_write_bits(i_params, F0900_P1_DVBS2_ENABLE, 0);
+			stv0900_write_bits(i_params, F0900_P1_DVBS1_ENABLE, 1);
+			stv0900_write_bits(i_params, F0900_P1_DVBS2_ENABLE, 1);
+			stv0900_write_bits(i_params, F0900_STOP_CLKVIT1, 0);
+			stv0900_write_reg(i_params, R0900_P1_ACLC, 0x1a);
+			stv0900_write_reg(i_params, R0900_P1_BCLC, 0x09);
+			stv0900_write_reg(i_params, R0900_P1_CAR2CFG, 0x26);
+			if (i_params->demod_mode != STV0900_SINGLE) {
+				if (i_params->chip_id <= 0x11)
+					stv0900_stop_all_s2_modcod(i_params, demod);
+				else
+					stv0900_activate_s2_modcode(i_params, demod);
+
+			} else
+				stv0900_activate_s2_modcode_single(i_params, demod);
+
+			if (i_params->dmd1_symbol_rate >= 2000000)
+				stv0900_set_viterbi_acq(i_params, demod);
+			else
+				stv0900_set_viterbi_tracq(i_params, demod);
+
+			stv0900_set_viterbi_standard(i_params, i_params->dmd1_srch_standard, i_params->dmd1_fec, demod);
+
+			break;
+		}
+		break;
+	case STV0900_DEMOD_2:
+		switch (i_params->dmd2_srch_stndrd) {
+		case STV0900_SEARCH_DVBS1:
+		case STV0900_SEARCH_DSS:
+			stv0900_write_bits(i_params, F0900_P2_DVBS1_ENABLE, 1);
+			stv0900_write_bits(i_params, F0900_P2_DVBS2_ENABLE, 0);
+			stv0900_write_bits(i_params, F0900_STOP_CLKVIT2, 0);
+			stv0900_write_reg(i_params, R0900_P2_ACLC, 0x1a);
+			stv0900_write_reg(i_params, R0900_P2_BCLC, 0x09);
+			stv0900_write_reg(i_params, R0900_P2_CAR2CFG, 0x22);
+			stv0900_set_viterbi_acq(i_params, demod);
+			stv0900_set_viterbi_standard(i_params, i_params->dmd2_srch_stndrd, i_params->dmd2_fec, demod);
+			break;
+		case STV0900_SEARCH_DVBS2:
+			stv0900_write_bits(i_params, F0900_P2_DVBS1_ENABLE, 0);
+			stv0900_write_bits(i_params, F0900_P2_DVBS2_ENABLE, 0);
+			stv0900_write_bits(i_params, F0900_P2_DVBS1_ENABLE, 1);
+			stv0900_write_bits(i_params, F0900_P2_DVBS2_ENABLE, 1);
+			stv0900_write_bits(i_params, F0900_STOP_CLKVIT2, 1);
+			stv0900_write_reg(i_params, R0900_P2_ACLC, 0x1a);
+			stv0900_write_reg(i_params, R0900_P2_BCLC, 0x09);
+			stv0900_write_reg(i_params, R0900_P2_CAR2CFG, 0x26);
+			if (i_params->demod_mode != STV0900_SINGLE)
+				stv0900_activate_s2_modcode(i_params, demod);
+			else
+				stv0900_activate_s2_modcode_single(i_params, demod);
+
+			stv0900_set_viterbi_tracq(i_params, demod);
+			break;
+		case STV0900_AUTO_SEARCH:
+		default:
+			stv0900_write_bits(i_params, F0900_P2_DVBS1_ENABLE, 0);
+			stv0900_write_bits(i_params, F0900_P2_DVBS2_ENABLE, 0);
+			stv0900_write_bits(i_params, F0900_P2_DVBS1_ENABLE, 1);
+			stv0900_write_bits(i_params, F0900_P2_DVBS2_ENABLE, 1);
+			stv0900_write_bits(i_params, F0900_STOP_CLKVIT2, 0);
+			stv0900_write_reg(i_params, R0900_P2_ACLC, 0x1a);
+			stv0900_write_reg(i_params, R0900_P2_BCLC, 0x09);
+			stv0900_write_reg(i_params, R0900_P2_CAR2CFG, 0x26);
+			if (i_params->demod_mode != STV0900_SINGLE)
+				stv0900_activate_s2_modcode(i_params, demod);
+			else
+				stv0900_activate_s2_modcode_single(i_params, demod);
+
+			if (i_params->dmd2_symbol_rate >= 2000000)
+				stv0900_set_viterbi_acq(i_params, demod);
+			else
+				stv0900_set_viterbi_tracq(i_params, demod);
+
+			stv0900_set_viterbi_standard(i_params, i_params->dmd2_srch_stndrd, i_params->dmd2_fec, demod);
+
+			break;
+		}
+
+		break;
+	}
+}
+
+enum fe_stv0900_signal_type stv0900_algo(struct dvb_frontend *fe)
+{
+	struct stv0900_state *state = fe->demodulator_priv;
+	struct stv0900_internal *i_params = state->internal;
+	enum fe_stv0900_demod_num demod = state->demod;
+
+	s32 demod_timeout = 500, fec_timeout = 50, stream_merger_field;
+
+	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(KERN_INFO "%s\n", __func__);
+
+	switch (demod) {
+	case STV0900_DEMOD_1:
+	default:
+		algo = i_params->dmd1_srch_algo;
+
+		stv0900_write_bits(i_params, F0900_P1_RST_HWARE, 1);
+		stream_merger_field = F0900_P1_RST_HWARE;
+
+		stv0900_write_reg(i_params, R0900_P1_DMDISTATE, 0x5C);
+
+		if (i_params->chip_id >= 0x20)
+			stv0900_write_reg(i_params, R0900_P1_CORRELABS, 0x9e);
+		else
+			stv0900_write_reg(i_params, R0900_P1_CORRELABS, 0x88);
+
+		stv0900_get_lock_timeout(&demod_timeout, &fec_timeout, i_params->dmd1_symbol_rate, i_params->dmd1_srch_algo);
+
+		if (i_params->dmd1_srch_algo == STV0900_BLIND_SEARCH) {
+			i_params->tuner1_bw = 2 * 36000000;
+
+			stv0900_write_reg(i_params, R0900_P1_TMGCFG2, 0x00);
+			stv0900_write_reg(i_params, R0900_P1_CORRELMANT, 0x70);
+
+			stv0900_set_symbol_rate(i_params, i_params->mclk, 1000000, demod);
+		} else {
+			stv0900_write_reg(i_params, R0900_P1_DMDT0M, 0x20);
+			stv0900_write_reg(i_params, R0900_P1_TMGCFG, 0xd2);
+
+			if (i_params->dmd1_symbol_rate < 2000000)
+				stv0900_write_reg(i_params, R0900_P1_CORRELMANT, 0x63);
+			else
+				stv0900_write_reg(i_params, R0900_P1_CORRELMANT, 0x70);
+
+			stv0900_write_reg(i_params, R0900_P1_AGC2REF, 0x38);
+			if (i_params->chip_id >= 0x20) {
+				stv0900_write_reg(i_params, R0900_P1_KREFTMG, 0x5a);
+
+				if (i_params->dmd1_srch_algo == STV0900_COLD_START)
+					i_params->tuner1_bw = (15 * (stv0900_carrier_width(i_params->dmd1_symbol_rate, i_params->rolloff) + 10000000)) / 10;
+				else if (i_params->dmd1_srch_algo == STV0900_WARM_START)
+					i_params->tuner1_bw = stv0900_carrier_width(i_params->dmd1_symbol_rate, i_params->rolloff) + 10000000;
+			} else {
+				stv0900_write_reg(i_params, R0900_P1_KREFTMG, 0xc1);
+				i_params->tuner1_bw = (15 * (stv0900_carrier_width(i_params->dmd1_symbol_rate, i_params->rolloff) + 10000000)) / 10;
+			}
+
+			stv0900_write_reg(i_params, R0900_P1_TMGCFG2, 0x01);
+
+			stv0900_set_symbol_rate(i_params, i_params->mclk, i_params->dmd1_symbol_rate, demod);
+			stv0900_set_max_symbol_rate(i_params, i_params->mclk, i_params->dmd1_symbol_rate, demod);
+			stv0900_set_min_symbol_rate(i_params, i_params->mclk, i_params->dmd1_symbol_rate, demod);
+			if (i_params->dmd1_symbol_rate >= 10000000)
+				low_sr = FALSE;
+			else
+				low_sr = TRUE;
+
+		}
+
+		stv0900_set_tuner(fe, i_params->tuner1_freq, i_params->tuner1_bw);
+
+		stv0900_write_bits(i_params, F0900_P1_SPECINV_CONTROL, i_params->dmd1_srch_iq_inv);
+		stv0900_write_bits(i_params, F0900_P1_MANUAL_ROLLOFF, 1);
+
+		stv0900_set_search_standard(i_params, demod);
+
+		if (i_params->dmd1_srch_algo != STV0900_BLIND_SEARCH)
+			stv0900_start_search(i_params, demod);
+		break;
+	case STV0900_DEMOD_2:
+		algo = i_params->dmd2_srch_algo;
+
+		stv0900_write_bits(i_params, F0900_P2_RST_HWARE, 1);
+
+		stream_merger_field = F0900_P2_RST_HWARE;
+
+		stv0900_write_reg(i_params, R0900_P2_DMDISTATE, 0x5C);
+
+		if (i_params->chip_id >= 0x20)
+			stv0900_write_reg(i_params, R0900_P2_CORRELABS, 0x9e);
+		else
+			stv0900_write_reg(i_params, R0900_P2_CORRELABS, 0x88);
+
+		stv0900_get_lock_timeout(&demod_timeout, &fec_timeout, i_params->dmd2_symbol_rate, i_params->dmd2_srch_algo);
+
+		if (i_params->dmd2_srch_algo == STV0900_BLIND_SEARCH) {
+			i_params->tuner2_bw = 2 * 36000000;
+
+			stv0900_write_reg(i_params, R0900_P2_TMGCFG2, 0x00);
+			stv0900_write_reg(i_params, R0900_P2_CORRELMANT, 0x70);
+
+			stv0900_set_symbol_rate(i_params, i_params->mclk, 1000000, demod);
+		} else {
+			stv0900_write_reg(i_params, R0900_P2_DMDT0M, 0x20);
+			stv0900_write_reg(i_params, R0900_P2_TMGCFG, 0xd2);
+
+			if (i_params->dmd2_symbol_rate < 2000000)
+				stv0900_write_reg(i_params, R0900_P2_CORRELMANT, 0x63);
+			else
+				stv0900_write_reg(i_params, R0900_P2_CORRELMANT, 0x70);
+
+			if (i_params->dmd2_symbol_rate >= 10000000)
+				stv0900_write_reg(i_params, R0900_P2_AGC2REF, 0x38);
+			else
+				stv0900_write_reg(i_params, R0900_P2_AGC2REF, 0x60);
+
+			if (i_params->chip_id >= 0x20) {
+				stv0900_write_reg(i_params, R0900_P2_KREFTMG, 0x5a);
+
+				if (i_params->dmd2_srch_algo == STV0900_COLD_START)
+					i_params->tuner2_bw = (15 * (stv0900_carrier_width(i_params->dmd2_symbol_rate,
+							i_params->rolloff) + 10000000)) / 10;
+				else if (i_params->dmd2_srch_algo == STV0900_WARM_START)
+					i_params->tuner2_bw = stv0900_carrier_width(i_params->dmd2_symbol_rate,
+							i_params->rolloff) + 10000000;
+			} else {
+				stv0900_write_reg(i_params, R0900_P2_KREFTMG, 0xc1);
+				i_params->tuner2_bw = (15 * (stv0900_carrier_width(i_params->dmd2_symbol_rate,
+									i_params->rolloff) + 10000000)) / 10;
+			}
+
+			stv0900_write_reg(i_params, R0900_P2_TMGCFG2, 0x01);
+
+			stv0900_set_symbol_rate(i_params, i_params->mclk, i_params->dmd2_symbol_rate, demod);
+			stv0900_set_max_symbol_rate(i_params, i_params->mclk, i_params->dmd2_symbol_rate, demod);
+			stv0900_set_min_symbol_rate(i_params, i_params->mclk, i_params->dmd2_symbol_rate, demod);
+			if (i_params->dmd2_symbol_rate >= 10000000)
+				low_sr = FALSE;
+			else
+				low_sr = TRUE;
+
+		}
+
+		stv0900_set_tuner(fe, i_params->tuner2_freq, i_params->tuner2_bw);
+
+		stv0900_write_bits(i_params, F0900_P2_SPECINV_CONTROL, i_params->dmd2_srch_iq_inv);
+		stv0900_write_bits(i_params, F0900_P2_MANUAL_ROLLOFF, 1);
+
+		stv0900_set_search_standard(i_params, demod);
+
+		if (i_params->dmd2_srch_algo != STV0900_BLIND_SEARCH)
+			stv0900_start_search(i_params, demod);
+		break;
+	}
+
+	if (i_params->chip_id == 0x12) {
+		stv0900_write_bits(i_params, stream_merger_field, 0);
+		msleep(3);
+		stv0900_write_bits(i_params, stream_merger_field, 1);
+		stv0900_write_bits(i_params, stream_merger_field, 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(i_params, demod, demod_timeout);
+
+	if ((lock == FALSE) && (algo == STV0900_COLD_START)) {
+		if (low_sr == FALSE) {
+			if (stv0900_check_timing_lock(i_params, demod) == TRUE)
+				lock = stv0900_sw_algo(i_params, demod);
+		}
+	}
+
+	if (lock == TRUE)
+		signal_type = stv0900_get_signal_params(fe);
+
+	if ((lock == TRUE) && (signal_type == STV0900_RANGEOK)) {
+		stv0900_track_optimization(fe);
+		if (i_params->chip_id <= 0x11) {
+			if ((stv0900_get_standard(fe, STV0900_DEMOD_1) == STV0900_DVBS1_STANDARD) && (stv0900_get_standard(fe, STV0900_DEMOD_2) == STV0900_DVBS1_STANDARD)) {
+				msleep(20);
+				stv0900_write_bits(i_params, stream_merger_field, 0);
+			} else {
+				stv0900_write_bits(i_params, stream_merger_field, 0);
+				msleep(3);
+				stv0900_write_bits(i_params, stream_merger_field, 1);
+				stv0900_write_bits(i_params, stream_merger_field, 0);
+			}
+		} else if (i_params->chip_id == 0x20) {
+			stv0900_write_bits(i_params, stream_merger_field, 0);
+			msleep(3);
+			stv0900_write_bits(i_params, stream_merger_field, 1);
+			stv0900_write_bits(i_params, stream_merger_field, 0);
+		}
+
+		if (stv0900_wait_for_lock(i_params, demod, fec_timeout, fec_timeout) == TRUE) {
+			lock = TRUE;
+			switch (demod) {
+			case STV0900_DEMOD_1:
+			default:
+				i_params->dmd1_rslts.locked = TRUE;
+				if (i_params->dmd1_rslts.standard == STV0900_DVBS2_STANDARD) {
+					stv0900_set_dvbs2_rolloff(i_params, demod);
+					stv0900_write_reg(i_params, R0900_P1_PDELCTRL2, 0x40);
+					stv0900_write_reg(i_params, R0900_P1_PDELCTRL2, 0);
+					stv0900_write_reg(i_params, R0900_P1_ERRCTRL1, 0x67);
+				} else {
+					stv0900_write_reg(i_params, R0900_P1_ERRCTRL1, 0x75);
+				}
+
+				stv0900_write_reg(i_params, R0900_P1_FBERCPT4, 0);
+				stv0900_write_reg(i_params, R0900_P1_ERRCTRL2, 0xc1);
+				break;
+			case STV0900_DEMOD_2:
+				i_params->dmd2_rslts.locked = TRUE;
+
+				if (i_params->dmd2_rslts.standard == STV0900_DVBS2_STANDARD) {
+					stv0900_set_dvbs2_rolloff(i_params, demod);
+					stv0900_write_reg(i_params, R0900_P2_PDELCTRL2, 0x60);
+					stv0900_write_reg(i_params, R0900_P2_PDELCTRL2, 0x20);
+					stv0900_write_reg(i_params, R0900_P2_ERRCTRL1, 0x67);
+				} else {
+					stv0900_write_reg(i_params, R0900_P2_ERRCTRL1, 0x75);
+				}
+
+				stv0900_write_reg(i_params, R0900_P2_FBERCPT4, 0);
+
+				stv0900_write_reg(i_params, R0900_P2_ERRCTRL2, 0xc1);
+				break;
+			}
+		} else {
+			lock = FALSE;
+			signal_type = STV0900_NODATA;
+			no_signal = stv0900_check_signal_presence(i_params, demod);
+
+			switch (demod) {
+			case STV0900_DEMOD_1:
+			default:
+				i_params->dmd1_rslts.locked = FALSE;
+				break;
+			case STV0900_DEMOD_2:
+				i_params->dmd2_rslts.locked = FALSE;
+				break;
+			}
+		}
+	}
+
+	if ((signal_type == STV0900_NODATA) && (no_signal == FALSE)) {
+		switch (demod) {
+		case STV0900_DEMOD_1:
+		default:
+			if (i_params->chip_id <= 0x11) {
+				if ((stv0900_get_bits(i_params, F0900_P1_HEADER_MODE) == STV0900_DVBS_FOUND) &&
+						(i_params->dmd1_srch_iq_inv <= STV0900_IQ_AUTO_NORMAL_FIRST))
+					signal_type = stv0900_dvbs1_acq_workaround(fe);
+			} else
+				i_params->dmd1_rslts.locked = FALSE;
+
+			break;
+		case STV0900_DEMOD_2:
+			if (i_params->chip_id <= 0x11) {
+				if ((stv0900_get_bits(i_params, F0900_P2_HEADER_MODE) == STV0900_DVBS_FOUND) &&
+						(i_params->dmd2_srch_iq_inv <= STV0900_IQ_AUTO_NORMAL_FIRST))
+					signal_type = stv0900_dvbs1_acq_workaround(fe);
+			} else
+				i_params->dmd2_rslts.locked = FALSE;
+			break;
+		}
+	}
+
+	return signal_type;
+}
+