[media] dib8000: enhancement

The intend of this patch is to improve the support of the dib8000.

Signed-off-by: Olivier Grenie <olivier.grenie@parrot.com>
Signed-off-by: Patrick Boettcher <patrick.boettcher@parrot.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

3 files changed, 1320 insertions, 924 deletions

diff --git a/drivers/media/dvb-frontends/dib8000.c b/drivers/media/dvb-frontends/dib8000.c
index 1f3bcb5a1de..1d719cce899 100644
--- a/drivers/media/dvb-frontends/dib8000.c
+++ b/drivers/media/dvb-frontends/dib8000.c
@@ -23,8 +23,8 @@
 #define LAYER_B   2
 #define LAYER_C   3
 
-#define FE_CALLBACK_TIME_NEVER 0xffffffff
 #define MAX_NUMBER_OF_FRONTENDS 6
+/* #define DIB8000_AGC_FREEZE */
 
 static int debug;
 module_param(debug, int, 0644);
@@ -32,8 +32,6 @@ MODULE_PARM_DESC(debug, "turn on debugging (default: 0)");
 
 #define dprintk(args...) do { if (debug) { printk(KERN_DEBUG "DiB8000: "); printk(args); printk("\n"); } } while (0)
 
-#define FE_STATUS_TUNE_FAILED 0
-
 struct i2c_device {
 	struct i2c_adapter *adap;
 	u8 addr;
@@ -42,6 +40,23 @@ struct i2c_device {
 	struct mutex *i2c_buffer_lock;
 };
 
+enum param_loop_step {
+	LOOP_TUNE_1,
+	LOOP_TUNE_2
+};
+
+enum dib8000_autosearch_step {
+	AS_START = 0,
+	AS_SEARCHING_FFT,
+	AS_SEARCHING_GUARD,
+	AS_DONE = 100,
+};
+
+enum timeout_mode {
+	SYMBOL_DEPENDENT_OFF = 0,
+	SYMBOL_DEPENDENT_ON,
+};
+
 struct dib8000_state {
 	struct dib8000_config cfg;
 
@@ -72,7 +87,7 @@ struct dib8000_state {
 	u16 revision;
 	u8 isdbt_cfg_loaded;
 	enum frontend_tune_state tune_state;
-	u32 status;
+	s32 status;
 
 	struct dvb_frontend *fe[MAX_NUMBER_OF_FRONTENDS];
 
@@ -85,6 +100,30 @@ struct dib8000_state {
 
 	u16 tuner_enable;
 	struct i2c_adapter dib8096p_tuner_adap;
+	u16 current_demod_bw;
+
+	u16 seg_mask;
+	u16 seg_diff_mask;
+	u16 mode;
+	u8 layer_b_nb_seg;
+	u8 layer_c_nb_seg;
+
+	u8 channel_parameters_set;
+	u16 autosearch_state;
+	u16 found_nfft;
+	u16 found_guard;
+	u8 subchannel;
+	u8 symbol_duration;
+	u32 timeout;
+	u8 longest_intlv_layer;
+	u16 output_mode;
+
+#ifdef DIB8000_AGC_FREEZE
+	u16 agc1_max;
+	u16 agc1_min;
+	u16 agc2_max;
+	u16 agc2_min;
+#endif
 };
 
 enum dib8000_power_mode {
@@ -338,9 +377,9 @@ static void dib8000_set_acquisition_mode(struct dib8000_state *state)
 static int dib8000_set_output_mode(struct dvb_frontend *fe, int mode)
 {
 	struct dib8000_state *state = fe->demodulator_priv;
-
 	u16 outreg, fifo_threshold, smo_mode, sram = 0x0205;	/* by default SDRAM deintlv is enabled */
 
+	state->output_mode = mode;
 	outreg = 0;
 	fifo_threshold = 1792;
 	smo_mode = (dib8000_read_word(state, 299) & 0x0050) | (1 << 1);
@@ -399,8 +438,9 @@ static int dib8000_set_output_mode(struct dvb_frontend *fe, int mode)
 static int dib8000_set_diversity_in(struct dvb_frontend *fe, int onoff)
 {
 	struct dib8000_state *state = fe->demodulator_priv;
-	u16 sync_wait = dib8000_read_word(state, 273) & 0xfff0;
+	u16 tmp, sync_wait = dib8000_read_word(state, 273) & 0xfff0;
 
+	dprintk("set diversity input to %i", onoff);
 	if (!state->differential_constellation) {
 		dib8000_write_word(state, 272, 1 << 9);	//dvsy_off_lmod4 = 1
 		dib8000_write_word(state, 273, sync_wait | (1 << 2) | 2);	// sync_enable = 1; comb_mode = 2
@@ -424,6 +464,13 @@ static int dib8000_set_diversity_in(struct dvb_frontend *fe, int onoff)
 		dib8000_write_word(state, 271, 1);
 		break;
 	}
+
+	if (state->revision == 0x8002) {
+		tmp = dib8000_read_word(state, 903);
+		dib8000_write_word(state, 903, tmp & ~(1 << 3));
+		msleep(30);
+		dib8000_write_word(state, 903, tmp | (1 << 3));
+	}
 	return 0;
 }
 
@@ -468,27 +515,6 @@ static void dib8000_set_power_mode(struct dib8000_state *state, enum dib8000_pow
 	dib8000_write_word(state, 1280, reg_1280);
 }
 
-static int dib8000_init_sdram(struct dib8000_state *state)
-{
-	u16 reg = 0;
-	dprintk("Init sdram");
-
-	reg = dib8000_read_word(state, 274)&0xfff0;
-	/* P_dintlv_delay_ram = 7 because of MobileSdram */
-	dib8000_write_word(state, 274, reg | 0x7);
-
-	dib8000_write_word(state, 1803, (7<<2));
-
-	reg = dib8000_read_word(state, 1280);
-	/* force restart P_restart_sdram */
-	dib8000_write_word(state, 1280,  reg | (1<<2));
-
-	/* release restart P_restart_sdram */
-	dib8000_write_word(state, 1280,  reg);
-
-	return 0;
-}
-
 static int dib8000_set_adc_state(struct dib8000_state *state, enum dibx000_adc_states no)
 {
 	int ret = 0;
@@ -584,18 +610,23 @@ static int dib8000_set_bandwidth(struct dvb_frontend *fe, u32 bw)
 
 static int dib8000_sad_calib(struct dib8000_state *state)
 {
+	u8 sad_sel = 3;
+
 	if (state->revision == 0x8090) {
-		dprintk("%s: the sad calibration is not needed for the dib8096P",
-				__func__);
-		return 0;
-	}
-	/* internal */
-	dib8000_write_word(state, 923, (0 << 1) | (0 << 0));
-	dib8000_write_word(state, 924, 776);	// 0.625*3.3 / 4096
+		dib8000_write_word(state, 922, (sad_sel << 2));
+		dib8000_write_word(state, 923, 2048);
 
-	/* do the calibration */
-	dib8000_write_word(state, 923, (1 << 0));
-	dib8000_write_word(state, 923, (0 << 0));
+		dib8000_write_word(state, 922, (sad_sel << 2) | 0x1);
+		dib8000_write_word(state, 922, (sad_sel << 2));
+	} else {
+		/* internal */
+		dib8000_write_word(state, 923, (0 << 1) | (0 << 0));
+		dib8000_write_word(state, 924, 776);
+
+		/* do the calibration */
+		dib8000_write_word(state, 923, (1 << 0));
+		dib8000_write_word(state, 923, (0 << 0));
+	}
 
 	msleep(1);
 	return 0;
@@ -609,8 +640,8 @@ int dib8000_set_wbd_ref(struct dvb_frontend *fe, u16 value)
 	state->wbd_ref = value;
 	return dib8000_write_word(state, 106, value);
 }
-
 EXPORT_SYMBOL(dib8000_set_wbd_ref);
+
 static void dib8000_reset_pll_common(struct dib8000_state *state, const struct dibx000_bandwidth_config *bw)
 {
 	dprintk("ifreq: %d %x, inversion: %d", bw->ifreq, bw->ifreq, bw->ifreq >> 25);
@@ -685,20 +716,23 @@ static void dib8000_reset_pll(struct dib8000_state *state)
 }
 
 int dib8000_update_pll(struct dvb_frontend *fe,
-		struct dibx000_bandwidth_config *pll)
+		struct dibx000_bandwidth_config *pll, u32 bw, u8 ratio)
 {
 	struct dib8000_state *state = fe->demodulator_priv;
 	u16 reg_1857, reg_1856 = dib8000_read_word(state, 1856);
-	u8 loopdiv, prediv;
+	u8 loopdiv, prediv, oldprediv = state->cfg.pll->pll_prediv ;
 	u32 internal, xtal;
 
 	/* get back old values */
 	prediv = reg_1856 & 0x3f;
 	loopdiv = (reg_1856 >> 6) & 0x3f;
 
-	if ((pll != NULL) && (pll->pll_prediv != prediv ||
-				pll->pll_ratio != loopdiv)) {
-		dprintk("Updating pll (prediv: old =  %d new = %d ; loopdiv : old = %d new = %d)", prediv, pll->pll_prediv, loopdiv, pll->pll_ratio);
+	if ((pll == NULL) || (pll->pll_prediv == prediv &&
+				pll->pll_ratio == loopdiv))
+		return -EINVAL;
+
+	dprintk("Updating pll (prediv: old =  %d new = %d ; loopdiv : old = %d new = %d)", prediv, pll->pll_prediv, loopdiv, pll->pll_ratio);
+	if (state->revision == 0x8090) {
 		reg_1856 &= 0xf000;
 		reg_1857 = dib8000_read_word(state, 1857);
 		/* disable PLL */
@@ -729,10 +763,33 @@ int dib8000_update_pll(struct dvb_frontend *fe,
 		reg_1856 = dib8000_read_word(state, 1856);
 		dprintk("PLL Updated with prediv = %d and loopdiv = %d",
 				reg_1856&0x3f, (reg_1856>>6)&0x3f);
+	} else {
+		if (bw != state->current_demod_bw) {
+			/** Bandwidth change => force PLL update **/
+			dprintk("PLL: Bandwidth Change %d MHz -> %d MHz (prediv: %d->%d)", state->current_demod_bw / 1000, bw / 1000, oldprediv, state->cfg.pll->pll_prediv);
+
+			if (state->cfg.pll->pll_prediv != oldprediv) {
+				/** Full PLL change only if prediv is changed **/
+
+				/** full update => bypass and reconfigure **/
+				dprintk("PLL: New Setting for %d MHz Bandwidth (prediv: %d, ratio: %d)", bw/1000, state->cfg.pll->pll_prediv, state->cfg.pll->pll_ratio);
+				dib8000_write_word(state, 902, dib8000_read_word(state, 902) | (1<<3)); /* bypass PLL */
+				dib8000_reset_pll(state);
+				dib8000_write_word(state, 898, 0x0004); /* sad */
+			} else
+				ratio = state->cfg.pll->pll_ratio;
 
-		return 0;
-	}
-	return -EINVAL;
+			state->current_demod_bw = bw;
+		}
+
+		if (ratio != 0) {
+			/** ratio update => only change ratio **/
+			dprintk("PLL: Update ratio (prediv: %d, ratio: %d)", state->cfg.pll->pll_prediv, ratio);
+			dib8000_write_word(state, 901, (state->cfg.pll->pll_prediv << 8) | (ratio << 0)); /* only the PLL ratio is updated. */
+		}
+}
+
+	return 0;
 }
 EXPORT_SYMBOL(dib8000_update_pll);
 
@@ -928,7 +985,7 @@ static int dib8000_reset(struct dvb_frontend *fe)
 	dib8000_set_power_mode(state, DIB8000_POWER_ALL);
 
 	/* always leave the VBG voltage on - it consumes almost nothing but takes a long time to start */
-	dib8000_set_adc_state(state, DIBX000_VBG_ENABLE);
+	dib8000_set_adc_state(state, DIBX000_ADC_OFF);
 
 	/* restart all parts */
 	dib8000_write_word(state, 770, 0xffff);
@@ -992,12 +1049,11 @@ static int dib8000_reset(struct dvb_frontend *fe)
 			l = *n++;
 		}
 	}
-	if (state->revision != 0x8090)
-		dib8000_write_word(state, 903, (0 << 4) | 2);
+
 	state->isdbt_cfg_loaded = 0;
 
 	//div_cfg override for special configs
-	if (state->cfg.div_cfg != 0)
+	if ((state->revision != 8090) && (state->cfg.div_cfg != 0))
 		dib8000_write_word(state, 903, state->cfg.div_cfg);
 
 	/* unforce divstr regardless whether i2c enumeration was done or not */
@@ -1006,10 +1062,12 @@ static int dib8000_reset(struct dvb_frontend *fe)
 	dib8000_set_bandwidth(fe, 6000);
 
 	dib8000_set_adc_state(state, DIBX000_SLOW_ADC_ON);
-	if (state->revision != 0x8090) {
-		dib8000_sad_calib(state);
+	dib8000_sad_calib(state);
+	if (state->revision != 0x8090)
 		dib8000_set_adc_state(state, DIBX000_SLOW_ADC_OFF);
-	}
+
+	/* ber_rs_len = 3 */
+	dib8000_write_word(state, 285, (dib8000_read_word(state, 285) & ~0x60) | (3 << 5));
 
 	dib8000_set_power_mode(state, DIB8000_POWER_INTERFACE_ONLY);
 
@@ -1441,6 +1499,7 @@ static int dib8096p_set_output_mode(struct dvb_frontend *fe, int mode)
 	u8 prefer_mpeg_mux_use = 1;
 	int ret = 0;
 
+	state->output_mode = mode;
 	dib8096p_host_bus_drive(state, 1);
 
 	fifo_threshold = 1792;
@@ -1879,782 +1938,637 @@ static const u16 adc_target_16dB[11] = {
 };
 static const u8 permu_seg[] = { 6, 5, 7, 4, 8, 3, 9, 2, 10, 1, 11, 0, 12 };
 
-static void dib8000_set_channel(struct dib8000_state *state, u8 seq, u8 autosearching)
+static u16 dib8000_set_layer(struct dib8000_state *state, u8 layer_index, u16 max_constellation)
 {
-	u16 mode, max_constellation, seg_diff_mask = 0, nbseg_diff = 0;
-	u8 guard, crate, constellation, timeI;
-	u16 i, coeff[4], P_cfr_left_edge = 0, P_cfr_right_edge = 0, seg_mask13 = 0x1fff;	// All 13 segments enabled
-	const s16 *ncoeff = NULL, *ana_fe;
-	u16 tmcc_pow = 0;
-	u16 coff_pow = 0x2800;
-	u16 init_prbs = 0xfff;
-	u16 ana_gain = 0;
-
-	if (state->revision == 0x8090)
-		dib8000_init_sdram(state);
-
-	if (state->ber_monitored_layer != LAYER_ALL)
-		dib8000_write_word(state, 285, (dib8000_read_word(state, 285) & 0x60) | state->ber_monitored_layer);
-	else
-		dib8000_write_word(state, 285, dib8000_read_word(state, 285) & 0x60);
-
-	i = dib8000_read_word(state, 26) & 1;	// P_dds_invspec
-	dib8000_write_word(state, 26, state->fe[0]->dtv_property_cache.inversion^i);
-
-	if (state->fe[0]->dtv_property_cache.isdbt_sb_mode) {
-		//compute new dds_freq for the seg and adjust prbs
-		int seg_offset =
-			state->fe[0]->dtv_property_cache.isdbt_sb_segment_idx -
-			(state->fe[0]->dtv_property_cache.isdbt_sb_segment_count / 2) -
-			(state->fe[0]->dtv_property_cache.isdbt_sb_segment_count % 2);
-		int clk = state->cfg.pll->internal;
-		u32 segtodds = ((u32) (430 << 23) / clk) << 3;	// segtodds = SegBW / Fclk * pow(2,26)
-		int dds_offset = seg_offset * segtodds;
-		int new_dds, sub_channel;
-		if ((state->fe[0]->dtv_property_cache.isdbt_sb_segment_count % 2) == 0)
-			dds_offset -= (int)(segtodds / 2);
-
-		if (state->cfg.pll->ifreq == 0) {
-			if ((state->fe[0]->dtv_property_cache.inversion ^ i) == 0) {
-				dib8000_write_word(state, 26, dib8000_read_word(state, 26) | 1);
-				new_dds = dds_offset;
-			} else
-				new_dds = dds_offset;
-
-			// We shift tuning frequency if the wanted segment is :
-			//  - the segment of center frequency with an odd total number of segments
-			//  - the segment to the left of center frequency with an even total number of segments
-			//  - the segment to the right of center frequency with an even total number of segments
-			if ((state->fe[0]->dtv_property_cache.delivery_system == SYS_ISDBT)
-				&& (state->fe[0]->dtv_property_cache.isdbt_sb_mode == 1)
-					&& (((state->fe[0]->dtv_property_cache.isdbt_sb_segment_count % 2)
-					  && (state->fe[0]->dtv_property_cache.isdbt_sb_segment_idx ==
-				  ((state->fe[0]->dtv_property_cache.isdbt_sb_segment_count / 2) + 1)))
-					 || (((state->fe[0]->dtv_property_cache.isdbt_sb_segment_count % 2) == 0)
-						 && (state->fe[0]->dtv_property_cache.isdbt_sb_segment_idx == (state->fe[0]->dtv_property_cache.isdbt_sb_segment_count / 2)))
-					 || (((state->fe[0]->dtv_property_cache.isdbt_sb_segment_count % 2) == 0)
-						 && (state->fe[0]->dtv_property_cache.isdbt_sb_segment_idx ==
-							 ((state->fe[0]->dtv_property_cache.isdbt_sb_segment_count / 2) + 1)))
-					)) {
-				new_dds -= ((u32) (850 << 22) / clk) << 4;	// new_dds = 850 (freq shift in KHz) / Fclk * pow(2,26)
-			}
-		} else {
-			if ((state->fe[0]->dtv_property_cache.inversion ^ i) == 0)
-				new_dds = state->cfg.pll->ifreq - dds_offset;
-			else
-				new_dds = state->cfg.pll->ifreq + dds_offset;
-		}
-		dib8000_write_word(state, 27, (u16) ((new_dds >> 16) & 0x01ff));
-		dib8000_write_word(state, 28, (u16) (new_dds & 0xffff));
-		if (state->fe[0]->dtv_property_cache.isdbt_sb_segment_count % 2)
-			sub_channel = ((state->fe[0]->dtv_property_cache.isdbt_sb_subchannel + (3 * seg_offset) + 1) % 41) / 3;
-		else
-			sub_channel = ((state->fe[0]->dtv_property_cache.isdbt_sb_subchannel + (3 * seg_offset)) % 41) / 3;
-		sub_channel -= 6;
-
-		if (state->fe[0]->dtv_property_cache.transmission_mode == TRANSMISSION_MODE_2K
-				|| state->fe[0]->dtv_property_cache.transmission_mode == TRANSMISSION_MODE_4K) {
-			dib8000_write_word(state, 219, dib8000_read_word(state, 219) | 0x1);	//adp_pass =1
-			dib8000_write_word(state, 190, dib8000_read_word(state, 190) | (0x1 << 14));	//pha3_force_pha_shift = 1
-		} else {
-			dib8000_write_word(state, 219, dib8000_read_word(state, 219) & 0xfffe);	//adp_pass =0
-			dib8000_write_word(state, 190, dib8000_read_word(state, 190) & 0xbfff);	//pha3_force_pha_shift = 0
-		}
-
-		switch (state->fe[0]->dtv_property_cache.transmission_mode) {
-		case TRANSMISSION_MODE_2K:
-			switch (sub_channel) {
-			case -6:
-				init_prbs = 0x0;
-				break;	// 41, 0, 1
-			case -5:
-				init_prbs = 0x423;
-				break;	// 02~04
-			case -4:
-				init_prbs = 0x9;
-				break;	// 05~07
-			case -3:
-				init_prbs = 0x5C7;
-				break;	// 08~10
-			case -2:
-				init_prbs = 0x7A6;
-				break;	// 11~13
-			case -1:
-				init_prbs = 0x3D8;
-				break;	// 14~16
-			case 0:
-				init_prbs = 0x527;
-				break;	// 17~19
-			case 1:
-				init_prbs = 0x7FF;
-				break;	// 20~22
-			case 2:
-				init_prbs = 0x79B;
-				break;	// 23~25
-			case 3:
-				init_prbs = 0x3D6;
-				break;	// 26~28
-			case 4:
-				init_prbs = 0x3A2;
-				break;	// 29~31
-			case 5:
-				init_prbs = 0x53B;
-				break;	// 32~34
-			case 6:
-				init_prbs = 0x2F4;
-				break;	// 35~37
-			default:
-			case 7:
-				init_prbs = 0x213;
-				break;	// 38~40
-			}
-			break;
+	u8  cr, constellation, time_intlv;
 
-		case TRANSMISSION_MODE_4K:
-			switch (sub_channel) {
-			case -6:
-				init_prbs = 0x0;
-				break;	// 41, 0, 1
-			case -5:
-				init_prbs = 0x208;
-				break;	// 02~04
-			case -4:
-				init_prbs = 0xC3;
-				break;	// 05~07
-			case -3:
-				init_prbs = 0x7B9;
-				break;	// 08~10
-			case -2:
-				init_prbs = 0x423;
-				break;	// 11~13
-			case -1:
-				init_prbs = 0x5C7;
-				break;	// 14~16
-			case 0:
-				init_prbs = 0x3D8;
-				break;	// 17~19
-			case 1:
-				init_prbs = 0x7FF;
-				break;	// 20~22
-			case 2:
-				init_prbs = 0x3D6;
-				break;	// 23~25
-			case 3:
-				init_prbs = 0x53B;
-				break;	// 26~28
-			case 4:
-				init_prbs = 0x213;
-				break;	// 29~31
-			case 5:
-				init_prbs = 0x29;
-				break;	// 32~34
-			case 6:
-				init_prbs = 0xD0;
-				break;	// 35~37
-			default:
-			case 7:
-				init_prbs = 0x48E;
-				break;	// 38~40
-			}
-			break;
-
-		default:
-		case TRANSMISSION_MODE_8K:
-			switch (sub_channel) {
-			case -6:
-				init_prbs = 0x0;
-				break;	// 41, 0, 1
-			case -5:
-				init_prbs = 0x740;
-				break;	// 02~04
-			case -4:
-				init_prbs = 0x069;
-				break;	// 05~07
-			case -3:
-				init_prbs = 0x7DD;
-				break;	// 08~10
-			case -2:
-				init_prbs = 0x208;
-				break;	// 11~13
-			case -1:
-				init_prbs = 0x7B9;
-				break;	// 14~16
-			case 0:
-				init_prbs = 0x5C7;
-				break;	// 17~19
-			case 1:
-				init_prbs = 0x7FF;
-				break;	// 20~22
-			case 2:
-				init_prbs = 0x53B;
-				break;	// 23~25
-			case 3:
-				init_prbs = 0x29;
-				break;	// 26~28
-			case 4:
-				init_prbs = 0x48E;
-				break;	// 29~31
-			case 5:
-				init_prbs = 0x4C4;
-				break;	// 32~34
-			case 6:
-				init_prbs = 0x367;
-				break;	// 33~37
-			default:
-			case 7:
-				init_prbs = 0x684;
-				break;	// 38~40
-			}
-			break;
-		}
-	} else {
-		dib8000_write_word(state, 27, (u16) ((state->cfg.pll->ifreq >> 16) & 0x01ff));
-		dib8000_write_word(state, 28, (u16) (state->cfg.pll->ifreq & 0xffff));
-		dib8000_write_word(state, 26, (u16) ((state->cfg.pll->ifreq >> 25) & 0x0003));
-	}
-	/*P_mode == ?? */
-	dib8000_write_word(state, 10, (seq << 4));
-	//  dib8000_write_word(state, 287, (dib8000_read_word(state, 287) & 0xe000) | 0x1000);
-
-	switch (state->fe[0]->dtv_property_cache.guard_interval) {
-	case GUARD_INTERVAL_1_32:
-		guard = 0;
-		break;
-	case GUARD_INTERVAL_1_16:
-		guard = 1;
-		break;
-	case GUARD_INTERVAL_1_8:
-		guard = 2;
-		break;
-	case GUARD_INTERVAL_1_4:
-	default:
-		guard = 3;
-		break;
-	}
-
-	dib8000_write_word(state, 1, (init_prbs << 2) | (guard & 0x3));	// ADDR 1
-
-	max_constellation = DQPSK;
-	for (i = 0; i < 3; i++) {
-		switch (state->fe[0]->dtv_property_cache.layer[i].modulation) {
-		case DQPSK:
+	switch (state->fe[0]->dtv_property_cache.layer[layer_index].modulation) {
+	case DQPSK:
 			constellation = 0;
 			break;
-		case QPSK:
+	case  QPSK:
 			constellation = 1;
 			break;
-		case QAM_16:
+	case QAM_16:
 			constellation = 2;
 			break;
-		case QAM_64:
-		default:
+	case QAM_64:
+	default:
 			constellation = 3;
 			break;
-		}
+	}
 
-		switch (state->fe[0]->dtv_property_cache.layer[i].fec) {
-		case FEC_1_2:
-			crate = 1;
+	switch (state->fe[0]->dtv_property_cache.layer[layer_index].fec) {
+	case FEC_1_2:
+			cr = 1;
 			break;
-		case FEC_2_3:
-			crate = 2;
+	case FEC_2_3:
+			cr = 2;
 			break;
-		case FEC_3_4:
-			crate = 3;
+	case FEC_3_4:
+			cr = 3;
 			break;
-		case FEC_5_6:
-			crate = 5;
+	case FEC_5_6:
+			cr = 5;
 			break;
-		case FEC_7_8:
-		default:
-			crate = 7;
+	case FEC_7_8:
+	default:
+			cr = 7;
 			break;
-		}
+	}
 
-		if ((state->fe[0]->dtv_property_cache.layer[i].interleaving > 0) &&
-				((state->fe[0]->dtv_property_cache.layer[i].interleaving <= 3) ||
-				 (state->fe[0]->dtv_property_cache.layer[i].interleaving == 4 && state->fe[0]->dtv_property_cache.isdbt_sb_mode == 1))
-			)
-			timeI = state->fe[0]->dtv_property_cache.layer[i].interleaving;
-		else
-			timeI = 0;
-		dib8000_write_word(state, 2 + i, (constellation << 10) | ((state->fe[0]->dtv_property_cache.layer[i].segment_count & 0xf) << 6) |
-					(crate << 3) | timeI);
-		if (state->fe[0]->dtv_property_cache.layer[i].segment_count > 0) {
-			switch (max_constellation) {
-			case DQPSK:
-			case QPSK:
-				if (state->fe[0]->dtv_property_cache.layer[i].modulation == QAM_16 ||
-					state->fe[0]->dtv_property_cache.layer[i].modulation == QAM_64)
-					max_constellation = state->fe[0]->dtv_property_cache.layer[i].modulation;
+	if ((state->fe[0]->dtv_property_cache.layer[layer_index].interleaving > 0) && ((state->fe[0]->dtv_property_cache.layer[layer_index].interleaving <= 3) || (state->fe[0]->dtv_property_cache.layer[layer_index].interleaving == 4 && state->fe[0]->dtv_property_cache.isdbt_sb_mode == 1)))
+		time_intlv = state->fe[0]->dtv_property_cache.layer[layer_index].interleaving;
+	else
+		time_intlv = 0;
+
+	dib8000_write_word(state, 2 + layer_index, (constellation << 10) | ((state->fe[0]->dtv_property_cache.layer[layer_index].segment_count & 0xf) << 6) | (cr << 3) | time_intlv);
+	if (state->fe[0]->dtv_property_cache.layer[layer_index].segment_count > 0) {
+		switch (max_constellation) {
+		case DQPSK:
+		case QPSK:
+				if (state->fe[0]->dtv_property_cache.layer[layer_index].modulation == QAM_16 || state->fe[0]->dtv_property_cache.layer[layer_index].modulation == QAM_64)
+					max_constellation = state->fe[0]->dtv_property_cache.layer[layer_index].modulation;
 				break;
-			case QAM_16:
-				if (state->fe[0]->dtv_property_cache.layer[i].modulation == QAM_64)
-					max_constellation = state->fe[0]->dtv_property_cache.layer[i].modulation;
+		case QAM_16:
+				if (state->fe[0]->dtv_property_cache.layer[layer_index].modulation == QAM_64)
+					max_constellation = state->fe[0]->dtv_property_cache.layer[layer_index].modulation;
 				break;
-			}
 		}
 	}
 
-	mode = fft_to_mode(state);
+	return  max_constellation;
+}
 
-	//dib8000_write_word(state, 5, 13); /*p_last_seg = 13*/
+static const u16 adp_Q64[4] = {0x0148, 0xfff0, 0x00a4, 0xfff8}; /* P_adp_regul_cnt 0.04, P_adp_noise_cnt -0.002, P_adp_regul_ext 0.02, P_adp_noise_ext -0.001 */
+static const u16 adp_Q16[4] = {0x023d, 0xffdf, 0x00a4, 0xfff0}; /* P_adp_regul_cnt 0.07, P_adp_noise_cnt -0.004, P_adp_regul_ext 0.02, P_adp_noise_ext -0.002 */
+static const u16 adp_Qdefault[4] = {0x099a, 0xffae, 0x0333, 0xfff8}; /* P_adp_regul_cnt 0.3,  P_adp_noise_cnt -0.01,  P_adp_regul_ext 0.1,  P_adp_noise_ext -0.002 */
+static u16 dib8000_adp_fine_tune(struct dib8000_state *state, u16 max_constellation)
+{
+	u16 i, ana_gain = 0;
+	const u16 *adp;
 
-	dib8000_write_word(state, 274, (dib8000_read_word(state, 274) & 0xffcf) |
-				((state->fe[0]->dtv_property_cache.isdbt_partial_reception & 1) << 5) | ((state->fe[0]->dtv_property_cache.
-												 isdbt_sb_mode & 1) << 4));
+	/* channel estimation fine configuration */
+	switch (max_constellation) {
+	case QAM_64:
+			ana_gain = 0x7;
+			adp = &adp_Q64[0];
+			break;
+	case QAM_16:
+			ana_gain = 0x7;
+			adp = &adp_Q16[0];
+			break;
+	default:
+			ana_gain = 0;
+			adp = &adp_Qdefault[0];
+			break;
+	}
 
-	dprintk("mode = %d ; guard = %d", mode, state->fe[0]->dtv_property_cache.guard_interval);
+	for (i = 0; i < 4; i++)
+		dib8000_write_word(state, 215 + i, adp[i]);
 
-	/* signal optimization parameter */
+	return ana_gain;
+}
 
-	if (state->fe[0]->dtv_property_cache.isdbt_partial_reception) {
-		seg_diff_mask = (state->fe[0]->dtv_property_cache.layer[0].modulation == DQPSK) << permu_seg[0];
-		for (i = 1; i < 3; i++)
-			nbseg_diff +=
-				(state->fe[0]->dtv_property_cache.layer[i].modulation == DQPSK) * state->fe[0]->dtv_property_cache.layer[i].segment_count;
-		for (i = 0; i < nbseg_diff; i++)
-			seg_diff_mask |= 1 << permu_seg[i + 1];
-	} else {
-		for (i = 0; i < 3; i++)
-			nbseg_diff +=
-				(state->fe[0]->dtv_property_cache.layer[i].modulation == DQPSK) * state->fe[0]->dtv_property_cache.layer[i].segment_count;
-		for (i = 0; i < nbseg_diff; i++)
-			seg_diff_mask |= 1 << permu_seg[i];
+static void dib8000_update_ana_gain(struct dib8000_state *state, u16 ana_gain)
+{
+	u16 i;
+
+	dib8000_write_word(state, 116, ana_gain);
+
+	/* update ADC target depending on ana_gain */
+	if (ana_gain) { /* set -16dB ADC target for ana_gain=-1 */
+		for (i = 0; i < 10; i++)
+			dib8000_write_word(state, 80 + i, adc_target_16dB[i]);
+	} else { /* set -22dB ADC target for ana_gain=0 */
+		for (i = 0; i < 10; i++)
+			dib8000_write_word(state, 80 + i, adc_target_16dB[i] - 355);
 	}
-	dprintk("nbseg_diff = %X (%d)", seg_diff_mask, seg_diff_mask);
+}
 
-	state->differential_constellation = (seg_diff_mask != 0);
-	if (state->revision != 0x8090)
-		dib8000_set_diversity_in(state->fe[0], state->diversity_onoff);
-	else
-		dib8096p_set_diversity_in(state->fe[0], state->diversity_onoff);
+static void dib8000_load_ana_fe_coefs(struct dib8000_state *state, const s16 *ana_fe)
+{
+	u16 mode = 0;
 
-	if (state->fe[0]->dtv_property_cache.isdbt_sb_mode == 1) {
-		if (state->fe[0]->dtv_property_cache.isdbt_partial_reception == 1)
-			seg_mask13 = 0x00E0;
-		else		// 1-segment
-			seg_mask13 = 0x0040;
-	} else
-		seg_mask13 = 0x1fff;
+	if (state->isdbt_cfg_loaded == 0)
+		for (mode = 0; mode < 24; mode++)
+			dib8000_write_word(state, 117 + mode, ana_fe[mode]);
+}
+
+static const u16 lut_prbs_2k[14] = {
+	0, 0x423, 0x009, 0x5C7, 0x7A6, 0x3D8, 0x527, 0x7FF, 0x79B, 0x3D6, 0x3A2, 0x53B, 0x2F4, 0x213
+};
+static const u16 lut_prbs_4k[14] = {
+	0, 0x208, 0x0C3, 0x7B9, 0x423, 0x5C7, 0x3D8, 0x7FF, 0x3D6, 0x53B, 0x213, 0x029, 0x0D0, 0x48E
+};
+static const u16 lut_prbs_8k[14] = {
+	0, 0x740, 0x069, 0x7DD, 0x208, 0x7B9, 0x5C7, 0x7FF, 0x53B, 0x029, 0x48E, 0x4C4, 0x367, 0x684
+};
 
-	// WRITE: Mode & Diff mask
-	dib8000_write_word(state, 0, (mode << 13) | seg_diff_mask);
+static u16 dib8000_get_init_prbs(struct dib8000_state *state, u16 subchannel)
+{
+	int sub_channel_prbs_group = 0;
 
-	if ((seg_diff_mask) || (state->fe[0]->dtv_property_cache.isdbt_sb_mode))
-		dib8000_write_word(state, 268, (dib8000_read_word(state, 268) & 0xF9FF) | 0x0200);
-	else
-		dib8000_write_word(state, 268, (2 << 9) | 39);	//init value
+	sub_channel_prbs_group = (subchannel / 3) + 1;
+	dprintk("sub_channel_prbs_group = %d , subchannel =%d prbs = 0x%04x", sub_channel_prbs_group, subchannel, lut_prbs_8k[sub_channel_prbs_group]);
+
+	switch (state->fe[0]->dtv_property_cache.transmission_mode) {
+	case TRANSMISSION_MODE_2K:
+			return lut_prbs_2k[sub_channel_prbs_group];
+	case TRANSMISSION_MODE_4K:
+			return lut_prbs_4k[sub_channel_prbs_group];
+	default:
+	case TRANSMISSION_MODE_8K:
+			return lut_prbs_8k[sub_channel_prbs_group];
+	}
+}
 
-	// ---- SMALL ----
-	// P_small_seg_diff
-	dib8000_write_word(state, 352, seg_diff_mask);	// ADDR 352
+static void dib8000_set_13seg_channel(struct dib8000_state *state)
+{
+	u16 i;
+	u16 coff_pow = 0x2800;
 
-	dib8000_write_word(state, 353, seg_mask13);	// ADDR 353
+	state->seg_mask = 0x1fff; /* All 13 segments enabled */
 
-/*	// P_small_narrow_band=0, P_small_last_seg=13, P_small_offset_num_car=5 */
+	/* ---- COFF ---- Carloff, the most robust --- */
+	if (state->isdbt_cfg_loaded == 0) {  /* if not Sound Broadcasting mode : put default values for 13 segments */
+		dib8000_write_word(state, 180, (16 << 6) | 9);
+		dib8000_write_word(state, 187, (4 << 12) | (8 << 5) | 0x2);
+		coff_pow = 0x2800;
+		for (i = 0; i < 6; i++)
+			dib8000_write_word(state, 181+i, coff_pow);
+
+		/* P_ctrl_corm_thres4pre_freq_inh=1, P_ctrl_pre_freq_mode_sat=1 */
+		/* P_ctrl_pre_freq_mode_sat=1, P_ctrl_pre_freq_inh=0, P_ctrl_pre_freq_step = 3, P_pre_freq_win_len=1 */
+		dib8000_write_word(state, 338, (1 << 12) | (1 << 10) | (0 << 9) | (3 << 5) | 1);
+
+		/* P_ctrl_pre_freq_win_len=8, P_ctrl_pre_freq_thres_lockin=6 */
+		dib8000_write_word(state, 340, (8 << 6) | (6 << 0));
+		/* P_ctrl_pre_freq_thres_lockout=4, P_small_use_tmcc/ac/cp=1 */
+		dib8000_write_word(state, 341, (4 << 3) | (1 << 2) | (1 << 1) | (1 << 0));
+
+		dib8000_write_word(state, 228, 0);  /* default value */
+		dib8000_write_word(state, 265, 31); /* default value */
+		dib8000_write_word(state, 205, 0x200f); /* init value */
+	}
+
+	/*
+	 * make the cpil_coff_lock more robust but slower p_coff_winlen
+	 * 6bits; p_coff_thres_lock 6bits (for coff lock if needed)
+	 */
+
+	if (state->cfg.pll->ifreq == 0)
+		dib8000_write_word(state, 266, ~state->seg_mask | state->seg_diff_mask | 0x40); /* P_equal_noise_seg_inh */
+
+	dib8000_load_ana_fe_coefs(state, ana_fe_coeff_13seg);
+}
+
+static void dib8000_set_subchannel_prbs(struct dib8000_state *state, u16 init_prbs)
+{
+	u16 reg_1;
 
-	// ---- SMALL ----
-	if (state->fe[0]->dtv_property_cache.isdbt_sb_mode == 1) {
+	reg_1 = dib8000_read_word(state, 1);
+	dib8000_write_word(state, 1, (init_prbs << 2) | (reg_1 & 0x3)); /* ADDR 1 */
+}
+
+static void dib8000_small_fine_tune(struct dib8000_state *state)
+{
+	u16 i;
+	const s16 *ncoeff;
+
+	dib8000_write_word(state, 352, state->seg_diff_mask);
+	dib8000_write_word(state, 353, state->seg_mask);
+
+	/* P_small_coef_ext_enable=ISDB-Tsb, P_small_narrow_band=ISDB-Tsb, P_small_last_seg=13, P_small_offset_num_car=5 */
+	dib8000_write_word(state, 351, (state->fe[0]->dtv_property_cache.isdbt_sb_mode << 9) | (state->fe[0]->dtv_property_cache.isdbt_sb_mode << 8) | (13 << 4) | 5);
+
+	if (state->fe[0]->dtv_property_cache.isdbt_sb_mode) {
+		/* ---- SMALL ---- */
 		switch (state->fe[0]->dtv_property_cache.transmission_mode) {
 		case TRANSMISSION_MODE_2K:
-			if (state->fe[0]->dtv_property_cache.isdbt_partial_reception == 0) {
-				if (state->fe[0]->dtv_property_cache.layer[0].modulation == DQPSK)
-					ncoeff = coeff_2k_sb_1seg_dqpsk;
-				else	// QPSK or QAM
-					ncoeff = coeff_2k_sb_1seg;
-			} else {	// 3-segments
-				if (state->fe[0]->dtv_property_cache.layer[0].modulation == DQPSK) {
-					if (state->fe[0]->dtv_property_cache.layer[1].modulation == DQPSK)
-						ncoeff = coeff_2k_sb_3seg_0dqpsk_1dqpsk;
-					else	// QPSK or QAM on external segments
-						ncoeff = coeff_2k_sb_3seg_0dqpsk;
-				} else {	// QPSK or QAM on central segment
-					if (state->fe[0]->dtv_property_cache.layer[1].modulation == DQPSK)
-						ncoeff = coeff_2k_sb_3seg_1dqpsk;
-					else	// QPSK or QAM on external segments
-						ncoeff = coeff_2k_sb_3seg;
+				if (state->fe[0]->dtv_property_cache.isdbt_partial_reception == 0) { /* 1-seg */
+					if (state->fe[0]->dtv_property_cache.layer[0].modulation == DQPSK) /* DQPSK */
+						ncoeff = coeff_2k_sb_1seg_dqpsk;
+					else /* QPSK or QAM */
+						ncoeff = coeff_2k_sb_1seg;
+				} else { /* 3-segments */
+					if (state->fe[0]->dtv_property_cache.layer[0].modulation == DQPSK) { /* DQPSK on central segment */
+						if (state->fe[0]->dtv_property_cache.layer[1].modulation == DQPSK) /* DQPSK on external segments */
+							ncoeff = coeff_2k_sb_3seg_0dqpsk_1dqpsk;
+						else /* QPSK or QAM on external segments */
+							ncoeff = coeff_2k_sb_3seg_0dqpsk;
+					} else { /* QPSK or QAM on central segment */
+						if (state->fe[0]->dtv_property_cache.layer[1].modulation == DQPSK) /* DQPSK on external segments */
+							ncoeff = coeff_2k_sb_3seg_1dqpsk;
+						else /* QPSK or QAM on external segments */
+							ncoeff = coeff_2k_sb_3seg;
+					}
 				}
-			}
-			break;
-
+				break;
 		case TRANSMISSION_MODE_4K:
-			if (state->fe[0]->dtv_property_cache.isdbt_partial_reception == 0) {
-				if (state->fe[0]->dtv_property_cache.layer[0].modulation == DQPSK)
-					ncoeff = coeff_4k_sb_1seg_dqpsk;
-				else	// QPSK or QAM
-					ncoeff = coeff_4k_sb_1seg;
-			} else {	// 3-segments
-				if (state->fe[0]->dtv_property_cache.layer[0].modulation == DQPSK) {
-					if (state->fe[0]->dtv_property_cache.layer[1].modulation == DQPSK) {
-						ncoeff = coeff_4k_sb_3seg_0dqpsk_1dqpsk;
-					} else {	// QPSK or QAM on external segments
-						ncoeff = coeff_4k_sb_3seg_0dqpsk;
+				if (state->fe[0]->dtv_property_cache.isdbt_partial_reception == 0) { /* 1-seg */
+					if (state->fe[0]->dtv_property_cache.layer[0].modulation == DQPSK) /* DQPSK */
+						ncoeff = coeff_4k_sb_1seg_dqpsk;
+					else /* QPSK or QAM */
+						ncoeff = coeff_4k_sb_1seg;
+				} else { /* 3-segments */
+					if (state->fe[0]->dtv_property_cache.layer[0].modulation == DQPSK) { /* DQPSK on central segment */
+						if (state->fe[0]->dtv_property_cache.layer[1].modulation == DQPSK) /* DQPSK on external segments */
+							ncoeff = coeff_4k_sb_3seg_0dqpsk_1dqpsk;
+						else /* QPSK or QAM on external segments */
+							ncoeff = coeff_4k_sb_3seg_0dqpsk;
+					} else { /* QPSK or QAM on central segment */
+						if (state->fe[0]->dtv_property_cache.layer[1].modulation == DQPSK) /* DQPSK on external segments */
+							ncoeff = coeff_4k_sb_3seg_1dqpsk;
+						else /* QPSK or QAM on external segments */
+							ncoeff = coeff_4k_sb_3seg;
 					}
-				} else {	// QPSK or QAM on central segment
-					if (state->fe[0]->dtv_property_cache.layer[1].modulation == DQPSK) {
-						ncoeff = coeff_4k_sb_3seg_1dqpsk;
-					} else	// QPSK or QAM on external segments
-						ncoeff = coeff_4k_sb_3seg;
 				}
-			}
-			break;
-
+				break;
 		case TRANSMISSION_MODE_AUTO:
 		case TRANSMISSION_MODE_8K:
 		default:
-			if (state->fe[0]->dtv_property_cache.isdbt_partial_reception == 0) {
-				if (state->fe[0]->dtv_property_cache.layer[0].modulation == DQPSK)
-					ncoeff = coeff_8k_sb_1seg_dqpsk;
-				else	// QPSK or QAM
-					ncoeff = coeff_8k_sb_1seg;
-			} else {	// 3-segments
-				if (state->fe[0]->dtv_property_cache.layer[0].modulation == DQPSK) {
-					if (state->fe[0]->dtv_property_cache.layer[1].modulation == DQPSK) {
-						ncoeff = coeff_8k_sb_3seg_0dqpsk_1dqpsk;
-					} else {	// QPSK or QAM on external segments
-						ncoeff = coeff_8k_sb_3seg_0dqpsk;
+				if (state->fe[0]->dtv_property_cache.isdbt_partial_reception == 0) { /* 1-seg */
+					if (state->fe[0]->dtv_property_cache.layer[0].modulation == DQPSK) /* DQPSK */
+						ncoeff = coeff_8k_sb_1seg_dqpsk;
+					else /* QPSK or QAM */
+						ncoeff = coeff_8k_sb_1seg;
+				} else { /* 3-segments */
+					if (state->fe[0]->dtv_property_cache.layer[0].modulation == DQPSK) { /* DQPSK on central segment */
+						if (state->fe[0]->dtv_property_cache.layer[1].modulation == DQPSK) /* DQPSK on external segments */
+							ncoeff = coeff_8k_sb_3seg_0dqpsk_1dqpsk;
+						else /* QPSK or QAM on external segments */
+							ncoeff = coeff_8k_sb_3seg_0dqpsk;
+					} else { /* QPSK or QAM on central segment */
+						if (state->fe[0]->dtv_property_cache.layer[1].modulation == DQPSK) /* DQPSK on external segments */
+							ncoeff = coeff_8k_sb_3seg_1dqpsk;
+						else /* QPSK or QAM on external segments */
+							ncoeff = coeff_8k_sb_3seg;
 					}
-				} else {	// QPSK or QAM on central segment
-					if (state->fe[0]->dtv_property_cache.layer[1].modulation == DQPSK) {
-						ncoeff = coeff_8k_sb_3seg_1dqpsk;
-					} else	// QPSK or QAM on external segments
-						ncoeff = coeff_8k_sb_3seg;
 				}
-			}
-			break;
+				break;
 		}
+
 		for (i = 0; i < 8; i++)
 			dib8000_write_word(state, 343 + i, ncoeff[i]);
 	}
+}
 
-	// P_small_coef_ext_enable=ISDB-Tsb, P_small_narrow_band=ISDB-Tsb, P_small_last_seg=13, P_small_offset_num_car=5
-	dib8000_write_word(state, 351,
-				(state->fe[0]->dtv_property_cache.isdbt_sb_mode << 9) | (state->fe[0]->dtv_property_cache.isdbt_sb_mode << 8) | (13 << 4) | 5);
+static const u16 coff_thres_1seg[3] = {300, 150, 80};
+static const u16 coff_thres_3seg[3] = {350, 300, 250};
+static void dib8000_set_sb_channel(struct dib8000_state *state)
+{
+	const u16 *coff;
+	u16 i;
 
-	// ---- COFF ----
-	// Carloff, the most robust
-	if (state->fe[0]->dtv_property_cache.isdbt_sb_mode == 1) {
+	if (state->fe[0]->dtv_property_cache.transmission_mode == TRANSMISSION_MODE_2K || state->fe[0]->dtv_property_cache.transmission_mode == TRANSMISSION_MODE_4K) {
+		dib8000_write_word(state, 219, dib8000_read_word(state, 219) | 0x1); /* adp_pass =1 */
+		dib8000_write_word(state, 190, dib8000_read_word(state, 190) | (0x1 << 14)); /* pha3_force_pha_shift = 1 */
+	} else {
+		dib8000_write_word(state, 219, dib8000_read_word(state, 219) & 0xfffe); /* adp_pass =0 */
+		dib8000_write_word(state, 190, dib8000_read_word(state, 190) & 0xbfff); /* pha3_force_pha_shift = 0 */
+	}
 
-		// P_coff_cpil_alpha=4, P_coff_inh=0, P_coff_cpil_winlen=64
-		// P_coff_narrow_band=1, P_coff_square_val=1, P_coff_one_seg=~partial_rcpt, P_coff_use_tmcc=1, P_coff_use_ac=1
-		dib8000_write_word(state, 187,
-					(4 << 12) | (0 << 11) | (63 << 5) | (0x3 << 3) | ((~state->fe[0]->dtv_property_cache.isdbt_partial_reception & 1) << 2)
-					| 0x3);
+	if (state->fe[0]->dtv_property_cache.isdbt_partial_reception == 1) /* 3-segments */
+		state->seg_mask = 0x00E0;
+	else /* 1-segment */
+		state->seg_mask = 0x0040;
 
-/*		// P_small_coef_ext_enable = 1 */
-/*		dib8000_write_word(state, 351, dib8000_read_word(state, 351) | 0x200); */
+	dib8000_write_word(state, 268, (dib8000_read_word(state, 268) & 0xF9FF) | 0x0200);
 
-		if (state->fe[0]->dtv_property_cache.isdbt_partial_reception == 0) {
+	/* ---- COFF ---- Carloff, the most robust --- */
+	/* P_coff_cpil_alpha=4, P_coff_inh=0, P_coff_cpil_winlen=64, P_coff_narrow_band=1, P_coff_square_val=1, P_coff_one_seg=~partial_rcpt, P_coff_use_tmcc=1, P_coff_use_ac=1 */
+	dib8000_write_word(state, 187, (4 << 12) | (0 << 11) | (63 << 5) | (0x3 << 3) | ((~state->fe[0]->dtv_property_cache.isdbt_partial_reception & 1) << 2) | 0x3);
 
-			// P_coff_winlen=63, P_coff_thres_lock=15, P_coff_one_seg_width= (P_mode == 3) , P_coff_one_seg_sym= (P_mode-1)
-			if (mode == 3)
-				dib8000_write_word(state, 180, 0x1fcf | ((mode - 1) << 14));
-			else
-				dib8000_write_word(state, 180, 0x0fcf | ((mode - 1) << 14));
-			// P_ctrl_corm_thres4pre_freq_inh=1,P_ctrl_pre_freq_mode_sat=1,
-			// P_ctrl_pre_freq_inh=0, P_ctrl_pre_freq_step = 5, P_pre_freq_win_len=4
-			dib8000_write_word(state, 338, (1 << 12) | (1 << 10) | (0 << 9) | (5 << 5) | 4);
-			// P_ctrl_pre_freq_win_len=16, P_ctrl_pre_freq_thres_lockin=8
-			dib8000_write_word(state, 340, (16 << 6) | (8 << 0));
-			// P_ctrl_pre_freq_thres_lockout=6, P_small_use_tmcc/ac/cp=1
-			dib8000_write_word(state, 341, (6 << 3) | (1 << 2) | (1 << 1) | (1 << 0));
-
-			// P_coff_corthres_8k, 4k, 2k and P_coff_cpilthres_8k, 4k, 2k
-			dib8000_write_word(state, 181, 300);
-			dib8000_write_word(state, 182, 150);
-			dib8000_write_word(state, 183, 80);
-			dib8000_write_word(state, 184, 300);
-			dib8000_write_word(state, 185, 150);
-			dib8000_write_word(state, 186, 80);
-		} else {	// Sound Broadcasting mode 3 seg
-			// P_coff_one_seg_sym= 1, P_coff_one_seg_width= 1, P_coff_winlen=63, P_coff_thres_lock=15
-			/*	if (mode == 3) */
-			/*		dib8000_write_word(state, 180, 0x2fca | ((0) << 14)); */
-			/*	else */
-			/*		dib8000_write_word(state, 180, 0x2fca | ((1) << 14)); */
-			dib8000_write_word(state, 180, 0x1fcf | (1 << 14));
-
-			// P_ctrl_corm_thres4pre_freq_inh = 1, P_ctrl_pre_freq_mode_sat=1,
-			// P_ctrl_pre_freq_inh=0, P_ctrl_pre_freq_step = 4, P_pre_freq_win_len=4
-			dib8000_write_word(state, 338, (1 << 12) | (1 << 10) | (0 << 9) | (4 << 5) | 4);
-			// P_ctrl_pre_freq_win_len=16, P_ctrl_pre_freq_thres_lockin=8
-			dib8000_write_word(state, 340, (16 << 6) | (8 << 0));
-			//P_ctrl_pre_freq_thres_lockout=6, P_small_use_tmcc/ac/cp=1
-			dib8000_write_word(state, 341, (6 << 3) | (1 << 2) | (1 << 1) | (1 << 0));
-
-			// P_coff_corthres_8k, 4k, 2k and P_coff_cpilthres_8k, 4k, 2k
-			dib8000_write_word(state, 181, 350);
-			dib8000_write_word(state, 182, 300);
-			dib8000_write_word(state, 183, 250);
-			dib8000_write_word(state, 184, 350);
-			dib8000_write_word(state, 185, 300);
-			dib8000_write_word(state, 186, 250);
-		}
+	dib8000_write_word(state, 340, (16 << 6) | (8 << 0)); /* P_ctrl_pre_freq_win_len=16, P_ctrl_pre_freq_thres_lockin=8 */
+	dib8000_write_word(state, 341, (6 << 3) | (1 << 2) | (1 << 1) | (1 << 0));/* P_ctrl_pre_freq_thres_lockout=6, P_small_use_tmcc/ac/cp=1 */
 
-	} else if (state->isdbt_cfg_loaded == 0) {	// if not Sound Broadcasting mode : put default values for 13 segments
-		dib8000_write_word(state, 180, (16 << 6) | 9);
-		dib8000_write_word(state, 187, (4 << 12) | (8 << 5) | 0x2);
-		coff_pow = 0x2800;
-		for (i = 0; i < 6; i++)
-			dib8000_write_word(state, 181 + i, coff_pow);
+	/* Sound Broadcasting mode 1 seg */
+	if (state->fe[0]->dtv_property_cache.isdbt_partial_reception == 0) {
+		/* P_coff_winlen=63, P_coff_thres_lock=15, P_coff_one_seg_width = (P_mode == 3) , P_coff_one_seg_sym = (P_mode-1) */
+		if (state->mode == 3)
+			dib8000_write_word(state, 180, 0x1fcf | ((state->mode - 1) << 14));
+		else
+			dib8000_write_word(state, 180, 0x0fcf | ((state->mode - 1) << 14));
 
-		// P_ctrl_corm_thres4pre_freq_inh=1, P_ctrl_pre_freq_mode_sat=1,
-		// P_ctrl_pre_freq_mode_sat=1, P_ctrl_pre_freq_inh=0, P_ctrl_pre_freq_step = 3, P_pre_freq_win_len=1
-		dib8000_write_word(state, 338, (1 << 12) | (1 << 10) | (0 << 9) | (3 << 5) | 1);
+		/* P_ctrl_corm_thres4pre_freq_inh=1,P_ctrl_pre_freq_mode_sat=1, P_ctrl_pre_freq_inh=0, P_ctrl_pre_freq_step = 5, P_pre_freq_win_len=4 */
+		dib8000_write_word(state, 338, (1 << 12) | (1 << 10) | (0 << 9) | (5 << 5) | 4);
+		coff = &coff_thres_1seg[0];
+	} else {   /* Sound Broadcasting mode 3 seg */
+		dib8000_write_word(state, 180, 0x1fcf | (1 << 14));
+		/* P_ctrl_corm_thres4pre_freq_inh = 1, P_ctrl_pre_freq_mode_sat=1, P_ctrl_pre_freq_inh=0, P_ctrl_pre_freq_step = 4, P_pre_freq_win_len=4 */
+		dib8000_write_word(state, 338, (1 << 12) | (1 << 10) | (0 << 9) | (4 << 5) | 4);
+		coff = &coff_thres_3seg[0];
+	}
 
-		// P_ctrl_pre_freq_win_len=8, P_ctrl_pre_freq_thres_lockin=6
-		dib8000_write_word(state, 340, (8 << 6) | (6 << 0));
-		// P_ctrl_pre_freq_thres_lockout=4, P_small_use_tmcc/ac/cp=1
-		dib8000_write_word(state, 341, (4 << 3) | (1 << 2) | (1 << 1) | (1 << 0));
+	dib8000_write_word(state, 228, 1); /* P_2d_mode_byp=1 */
+	dib8000_write_word(state, 205, dib8000_read_word(state, 205) & 0xfff0); /* P_cspu_win_cut = 0 */
+
+	if (state->fe[0]->dtv_property_cache.isdbt_partial_reception == 0 && state->fe[0]->dtv_property_cache.transmission_mode == TRANSMISSION_MODE_2K)
+		dib8000_write_word(state, 265, 15); /* P_equal_noise_sel = 15 */
+
+	/* Write COFF thres */
+	for (i = 0 ; i < 3; i++) {
+		dib8000_write_word(state, 181+i, coff[i]);
+		dib8000_write_word(state, 184+i, coff[i]);
 	}
-	// ---- FFT ----
-	if (state->fe[0]->dtv_property_cache.isdbt_sb_mode == 1 && state->fe[0]->dtv_property_cache.isdbt_partial_reception == 0)
-		dib8000_write_word(state, 178, 64);	// P_fft_powrange=64
-	else
-		dib8000_write_word(state, 178, 32);	// P_fft_powrange=32
 
-	/* make the cpil_coff_lock more robust but slower p_coff_winlen
+	/*
+	 * make the cpil_coff_lock more robust but slower p_coff_winlen
 	 * 6bits; p_coff_thres_lock 6bits (for coff lock if needed)
 	 */
-	/* if ( ( nbseg_diff>0)&&(nbseg_diff<13))
-		dib8000_write_word(state, 187, (dib8000_read_word(state, 187) & 0xfffb) | (1 << 3)); */
-
-	dib8000_write_word(state, 189, ~seg_mask13 | seg_diff_mask);	/* P_lmod4_seg_inh       */
-	dib8000_write_word(state, 192, ~seg_mask13 | seg_diff_mask);	/* P_pha3_seg_inh        */
-	dib8000_write_word(state, 225, ~seg_mask13 | seg_diff_mask);	/* P_tac_seg_inh         */
-	if ((!state->fe[0]->dtv_property_cache.isdbt_sb_mode) && (state->cfg.pll->ifreq == 0))
-		dib8000_write_word(state, 266, ~seg_mask13 | seg_diff_mask | 0x40);	/* P_equal_noise_seg_inh */
-	else
-		dib8000_write_word(state, 266, ~seg_mask13 | seg_diff_mask);	/* P_equal_noise_seg_inh */
-	dib8000_write_word(state, 287, ~seg_mask13 | 0x1000);	/* P_tmcc_seg_inh        */
-	//dib8000_write_word(state, 288, ~seg_mask13 | seg_diff_mask); /* P_tmcc_seg_eq_inh */
-	if (!autosearching)
-		dib8000_write_word(state, 288, (~seg_mask13 | seg_diff_mask) & 0x1fff);	/* P_tmcc_seg_eq_inh */
+
+	dib8000_write_word(state, 266, ~state->seg_mask | state->seg_diff_mask); /* P_equal_noise_seg_inh */
+
+	if (state->fe[0]->dtv_property_cache.isdbt_partial_reception == 0)
+		dib8000_write_word(state, 178, 64); /* P_fft_powrange = 64 */
 	else
-		dib8000_write_word(state, 288, 0x1fff);	//disable equalisation of the tmcc when autosearch to be able to find the DQPSK channels.
-	dprintk("287 = %X (%d)", ~seg_mask13 | 0x1000, ~seg_mask13 | 0x1000);
-
-	dib8000_write_word(state, 211, seg_mask13 & (~seg_diff_mask));	/* P_des_seg_enabled     */
-
-	/* offset loop parameters */
-	if (state->fe[0]->dtv_property_cache.isdbt_sb_mode == 1) {
-		if (state->fe[0]->dtv_property_cache.isdbt_partial_reception == 0)
-			/* P_timf_alpha = (11-P_mode), P_corm_alpha=6, P_corm_thres=0x80 */
-			dib8000_write_word(state, 32, ((11 - mode) << 12) | (6 << 8) | 0x40);
-
-		else		// Sound Broadcasting mode 3 seg
-			/* P_timf_alpha = (10-P_mode), P_corm_alpha=6, P_corm_thres=0x80 */
-			dib8000_write_word(state, 32, ((10 - mode) << 12) | (6 << 8) | 0x60);
-	} else
-		// TODO in 13 seg, timf_alpha can always be the same or not ?
-		/* P_timf_alpha = (9-P_mode, P_corm_alpha=6, P_corm_thres=0x80 */
-		dib8000_write_word(state, 32, ((9 - mode) << 12) | (6 << 8) | 0x80);
-
-	if (state->fe[0]->dtv_property_cache.isdbt_sb_mode == 1) {
-		if (state->fe[0]->dtv_property_cache.isdbt_partial_reception == 0)
-			/* P_ctrl_pha_off_max=3   P_ctrl_sfreq_inh =0  P_ctrl_sfreq_step = (11-P_mode)  */
-			dib8000_write_word(state, 37, (3 << 5) | (0 << 4) | (10 - mode));
-
-		else		// Sound Broadcasting mode 3 seg
-			/* P_ctrl_pha_off_max=3   P_ctrl_sfreq_inh =0  P_ctrl_sfreq_step = (10-P_mode)  */
-			dib8000_write_word(state, 37, (3 << 5) | (0 << 4) | (9 - mode));
-	} else
-		/* P_ctrl_pha_off_max=3   P_ctrl_sfreq_inh =0  P_ctrl_sfreq_step = 9  */
-		dib8000_write_word(state, 37, (3 << 5) | (0 << 4) | (8 - mode));
+		dib8000_write_word(state, 178, 32); /* P_fft_powrange = 32 */
+}
 
-	/* P_dvsy_sync_wait - reuse mode */
-	switch (state->fe[0]->dtv_property_cache.transmission_mode) {
-	case TRANSMISSION_MODE_8K:
-		mode = 256;
-		break;
-	case TRANSMISSION_MODE_4K:
-		mode = 128;
-		break;
-	default:
-	case TRANSMISSION_MODE_2K:
-		mode = 64;
-		break;
+static void dib8000_set_isdbt_common_channel(struct dib8000_state *state, u8 seq, u8 autosearching)
+{
+	u16 p_cfr_left_edge  = 0, p_cfr_right_edge = 0;
+	u16 tmcc_pow = 0, ana_gain = 0, tmp = 0, i = 0, nbseg_diff = 0 ;
+	u16 max_constellation = DQPSK;
+	int init_prbs;
+
+	/* P_mode */
+	dib8000_write_word(state, 10, (seq << 4));
+
+	/* init mode */
+	state->mode = fft_to_mode(state);
+
+	/* set guard */
+	tmp = dib8000_read_word(state, 1);
+	dib8000_write_word(state, 1, (tmp&0xfffc) | (state->fe[0]->dtv_property_cache.guard_interval & 0x3));
+
+	dib8000_write_word(state, 274, (dib8000_read_word(state, 274) & 0xffcf) | ((state->fe[0]->dtv_property_cache.isdbt_partial_reception & 1) << 5) | ((state->fe[0]->dtv_property_cache.isdbt_sb_mode & 1) << 4));
+
+	/* signal optimization parameter */
+	if (state->fe[0]->dtv_property_cache.isdbt_partial_reception) {
+		state->seg_diff_mask = (state->fe[0]->dtv_property_cache.layer[0].modulation == DQPSK) << permu_seg[0];
+		for (i = 1; i < 3; i++)
+			nbseg_diff += (state->fe[0]->dtv_property_cache.layer[i].modulation == DQPSK) * state->fe[0]->dtv_property_cache.layer[i].segment_count;
+		for (i = 0; i < nbseg_diff; i++)
+			state->seg_diff_mask |= 1 << permu_seg[i+1];
+	} else {
+		for (i = 0; i < 3; i++)
+			nbseg_diff += (state->fe[0]->dtv_property_cache.layer[i].modulation == DQPSK) * state->fe[0]->dtv_property_cache.layer[i].segment_count;
+		for (i = 0; i < nbseg_diff; i++)
+			state->seg_diff_mask |= 1 << permu_seg[i];
 	}
-	if (state->cfg.diversity_delay == 0)
-		mode = (mode * (1 << (guard)) * 3) / 2 + 48;	// add 50% SFN margin + compensate for one DVSY-fifo
+
+	if (state->seg_diff_mask)
+		dib8000_write_word(state, 268, (dib8000_read_word(state, 268) & 0xF9FF) | 0x0200);
 	else
-		mode = (mode * (1 << (guard)) * 3) / 2 + state->cfg.diversity_delay;	// add 50% SFN margin + compensate for DVSY-fifo
-	mode <<= 4;
-	dib8000_write_word(state, 273, (dib8000_read_word(state, 273) & 0x000f) | mode);
+		dib8000_write_word(state, 268, (2 << 9) | 39); /*init value */
 
-	/* channel estimation fine configuration */
-	switch (max_constellation) {
-	case QAM_64:
-		ana_gain = 0x7;	// -1 : avoid def_est saturation when ADC target is -16dB
-		coeff[0] = 0x0148;	/* P_adp_regul_cnt 0.04 */
-		coeff[1] = 0xfff0;	/* P_adp_noise_cnt -0.002 */
-		coeff[2] = 0x00a4;	/* P_adp_regul_ext 0.02 */
-		coeff[3] = 0xfff8;	/* P_adp_noise_ext -0.001 */
-		//if (!state->cfg.hostbus_diversity) //if diversity, we should prehaps use the configuration of the max_constallation -1
-		break;
-	case QAM_16:
-		ana_gain = 0x7;	// -1 : avoid def_est saturation when ADC target is -16dB
-		coeff[0] = 0x023d;	/* P_adp_regul_cnt 0.07 */
-		coeff[1] = 0xffdf;	/* P_adp_noise_cnt -0.004 */
-		coeff[2] = 0x00a4;	/* P_adp_regul_ext 0.02 */
-		coeff[3] = 0xfff0;	/* P_adp_noise_ext -0.002 */
-		//if (!((state->cfg.hostbus_diversity) && (max_constellation == QAM_16)))
-		break;
-	default:
-		ana_gain = 0;	// 0 : goes along with ADC target at -22dB to keep good mobile performance and lock at sensitivity level
-		coeff[0] = 0x099a;	/* P_adp_regul_cnt 0.3 */
-		coeff[1] = 0xffae;	/* P_adp_noise_cnt -0.01 */
-		coeff[2] = 0x0333;	/* P_adp_regul_ext 0.1 */
-		coeff[3] = 0xfff8;	/* P_adp_noise_ext -0.002 */
-		break;
+	for (i = 0; i < 3; i++)
+		max_constellation = dib8000_set_layer(state, i, max_constellation);
+	if (autosearching == 0) {
+		state->layer_b_nb_seg = state->fe[0]->dtv_property_cache.layer[1].segment_count;
+		state->layer_c_nb_seg = state->fe[0]->dtv_property_cache.layer[2].segment_count;
 	}
-	for (mode = 0; mode < 4; mode++)
-		dib8000_write_word(state, 215 + mode, coeff[mode]);
 
-	// update ana_gain depending on max constellation
-	dib8000_write_word(state, 116, ana_gain);
-	// update ADC target depending on ana_gain
-	if (ana_gain) {		// set -16dB ADC target for ana_gain=-1
-		for (i = 0; i < 10; i++)
-			dib8000_write_word(state, 80 + i, adc_target_16dB[i]);
-	} else {		// set -22dB ADC target for ana_gain=0
-		for (i = 0; i < 10; i++)
-			dib8000_write_word(state, 80 + i, adc_target_16dB[i] - 355);
-	}
+	/* WRITE: Mode & Diff mask */
+	dib8000_write_word(state, 0, (state->mode << 13) | state->seg_diff_mask);
 
-	// ---- ANA_FE ----
+	state->differential_constellation = (state->seg_diff_mask != 0);
+
+	/* channel estimation fine configuration */
+	ana_gain = dib8000_adp_fine_tune(state, max_constellation);
+
+	/* update ana_gain depending on max constellation */
+	dib8000_update_ana_gain(state, ana_gain);
+
+	/* ---- ANA_FE ---- */
+	if (state->fe[0]->dtv_property_cache.isdbt_partial_reception) /* 3-segments */
+		dib8000_load_ana_fe_coefs(state, ana_fe_coeff_3seg);
+	else
+		dib8000_load_ana_fe_coefs(state, ana_fe_coeff_1seg); /* 1-segment */
+
+	/* TSB or ISDBT ? apply it now */
 	if (state->fe[0]->dtv_property_cache.isdbt_sb_mode) {
-		if (state->fe[0]->dtv_property_cache.isdbt_partial_reception == 1)
-			ana_fe = ana_fe_coeff_3seg;
-		else		// 1-segment
-			ana_fe = ana_fe_coeff_1seg;
-	} else
-		ana_fe = ana_fe_coeff_13seg;
-
-	if (state->fe[0]->dtv_property_cache.isdbt_sb_mode == 1 || state->isdbt_cfg_loaded == 0)
-		for (mode = 0; mode < 24; mode++)
-			dib8000_write_word(state, 117 + mode, ana_fe[mode]);
+		dib8000_set_sb_channel(state);
+		if (state->fe[0]->dtv_property_cache.isdbt_sb_subchannel != -1)
+			init_prbs = dib8000_get_init_prbs(state, state->fe[0]->dtv_property_cache.isdbt_sb_subchannel);
+		else
+			init_prbs = 0;
+	} else {
+		dib8000_set_13seg_channel(state);
+		init_prbs = 0xfff;
+	}
 
-	// ---- CHAN_BLK ----
+	/* SMALL */
+	dib8000_small_fine_tune(state);
+
+	dib8000_set_subchannel_prbs(state, init_prbs);
+
+	/* ---- CHAN_BLK ---- */
 	for (i = 0; i < 13; i++) {
-		if ((((~seg_diff_mask) >> i) & 1) == 1) {
-			P_cfr_left_edge += (1 << i) * ((i == 0) || ((((seg_mask13 & (~seg_diff_mask)) >> (i - 1)) & 1) == 0));
-			P_cfr_right_edge += (1 << i) * ((i == 12) || ((((seg_mask13 & (~seg_diff_mask)) >> (i + 1)) & 1) == 0));
+		if ((((~state->seg_diff_mask) >> i) & 1) == 1) {
+			p_cfr_left_edge  += (1 << i) * ((i == 0) || ((((state->seg_mask & (~state->seg_diff_mask)) >> (i - 1)) & 1) == 0));
+			p_cfr_right_edge += (1 << i) * ((i == 12) || ((((state->seg_mask & (~state->seg_diff_mask)) >> (i + 1)) & 1) == 0));
 		}
 	}
-	dib8000_write_word(state, 222, P_cfr_left_edge);	// P_cfr_left_edge
-	dib8000_write_word(state, 223, P_cfr_right_edge);	// P_cfr_right_edge
-	// "P_cspu_left_edge"  not used => do not care
-	// "P_cspu_right_edge" not used => do not care
-
-	if (state->fe[0]->dtv_property_cache.isdbt_sb_mode == 1) {
-		dib8000_write_word(state, 228, 1);	// P_2d_mode_byp=1
-		dib8000_write_word(state, 205, dib8000_read_word(state, 205) & 0xfff0);	// P_cspu_win_cut = 0
-		if (state->fe[0]->dtv_property_cache.isdbt_partial_reception == 0
-			&& state->fe[0]->dtv_property_cache.transmission_mode == TRANSMISSION_MODE_2K) {
-			//dib8000_write_word(state, 219, dib8000_read_word(state, 219) & 0xfffe); // P_adp_pass = 0
-			dib8000_write_word(state, 265, 15);	// P_equal_noise_sel = 15
-		}
-	} else if (state->isdbt_cfg_loaded == 0) {
-		dib8000_write_word(state, 228, 0);	// default value
-		dib8000_write_word(state, 265, 31);	// default value
-		dib8000_write_word(state, 205, 0x200f);	// init value
-	}
-	// ---- TMCC ----
+	dib8000_write_word(state, 222, p_cfr_left_edge); /* p_cfr_left_edge */
+	dib8000_write_word(state, 223, p_cfr_right_edge); /* p_cfr_right_edge */
+	/* "P_cspu_left_edge" & "P_cspu_right_edge" not used => do not care */
+
+	dib8000_write_word(state, 189, ~state->seg_mask | state->seg_diff_mask); /* P_lmod4_seg_inh */
+	dib8000_write_word(state, 192, ~state->seg_mask | state->seg_diff_mask); /* P_pha3_seg_inh */
+	dib8000_write_word(state, 225, ~state->seg_mask | state->seg_diff_mask); /* P_tac_seg_inh */
+
+	if (!autosearching)
+		dib8000_write_word(state, 288, (~state->seg_mask | state->seg_diff_mask) & 0x1fff); /* P_tmcc_seg_eq_inh */
+	else
+		dib8000_write_word(state, 288, 0x1fff); /*disable equalisation of the tmcc when autosearch to be able to find the DQPSK channels. */
+
+	dib8000_write_word(state, 211, state->seg_mask & (~state->seg_diff_mask)); /* P_des_seg_enabled */
+	dib8000_write_word(state, 287, ~state->seg_mask | 0x1000); /* P_tmcc_seg_inh */
+
+	dib8000_write_word(state, 178, 32); /* P_fft_powrange = 32 */
+
+	/* ---- TMCC ---- */
 	for (i = 0; i < 3; i++)
-		tmcc_pow +=
-			(((state->fe[0]->dtv_property_cache.layer[i].modulation == DQPSK) * 4 + 1) * state->fe[0]->dtv_property_cache.layer[i].segment_count);
-	// Quantif of "P_tmcc_dec_thres_?k" is (0, 5+mode, 9);
-	// Threshold is set at 1/4 of max power.
-	tmcc_pow *= (1 << (9 - 2));
-
-	dib8000_write_word(state, 290, tmcc_pow);	// P_tmcc_dec_thres_2k
-	dib8000_write_word(state, 291, tmcc_pow);	// P_tmcc_dec_thres_4k
-	dib8000_write_word(state, 292, tmcc_pow);	// P_tmcc_dec_thres_8k
-	//dib8000_write_word(state, 287, (1 << 13) | 0x1000 );
-	// ---- PHA3 ----
+		tmcc_pow += (((state->fe[0]->dtv_property_cache.layer[i].modulation == DQPSK) * 4 + 1) * state->fe[0]->dtv_property_cache.layer[i].segment_count) ;
+
+	/* Quantif of "P_tmcc_dec_thres_?k" is (0, 5+mode, 9); */
+	/* Threshold is set at 1/4 of max power. */
+	tmcc_pow *= (1 << (9-2));
+	dib8000_write_word(state, 290, tmcc_pow); /* P_tmcc_dec_thres_2k */
+	dib8000_write_word(state, 291, tmcc_pow); /* P_tmcc_dec_thres_4k */
+	dib8000_write_word(state, 292, tmcc_pow); /* P_tmcc_dec_thres_8k */
+	/*dib8000_write_word(state, 287, (1 << 13) | 0x1000 ); */
 
+	/* ---- PHA3 ---- */
 	if (state->isdbt_cfg_loaded == 0)
-		dib8000_write_word(state, 250, 3285);	/*p_2d_hspeed_thr0 */
+		dib8000_write_word(state, 250, 3285); /* p_2d_hspeed_thr0 */
 
-	if (state->fe[0]->dtv_property_cache.isdbt_sb_mode == 1)
-		state->isdbt_cfg_loaded = 0;
-	else
-		state->isdbt_cfg_loaded = 1;
+	state->isdbt_cfg_loaded = 0;
+}
 
+u32 dib8000_wait_lock(struct dib8000_state *state, u32 internal, u32 wait0_ms, u32 wait1_ms, u32 wait2_ms)
+{
+	u32 value;
+	u16 reg = 11; /* P_search_end0 start addr */
+
+	for (reg = 11; reg < 16; reg += 2) {
+		if (reg == 11) {
+			if (state->revision == 0x8090)
+				value = internal * wait1_ms; /* P_search_end0 wait time */
+			else
+				value = internal * wait0_ms; /* P_search_end0 wait time */
+		} else if (reg == 13)
+			value = internal * wait1_ms; /* P_search_end0 wait time */
+		else if (reg == 15)
+			value = internal * wait2_ms; /* P_search_end0 wait time */
+		dib8000_write_word(state, reg, (u16)((value >> 16) & 0xffff));
+		dib8000_write_word(state, (reg + 1), (u16)(value & 0xffff));
+	}
+	return value;
 }
 
 static int dib8000_autosearch_start(struct dvb_frontend *fe)
 {
-	u8 factor;
-	u32 value;
 	struct dib8000_state *state = fe->demodulator_priv;
+	u8 slist = 0;
+	u32 value, internal = state->cfg.pll->internal;
+
+	if (state->revision == 0x8090)
+		internal = dib8000_read32(state, 23) / 1000;
 
-	int slist = 0;
+	if (state->autosearch_state == AS_SEARCHING_FFT) {
+		dib8000_write_word(state,  37, 0x0065); /* P_ctrl_pha_off_max default values */
+		dib8000_write_word(state, 116, 0x0000); /* P_ana_gain to 0 */
 
-	state->fe[0]->dtv_property_cache.inversion = 0;
-	if (!state->fe[0]->dtv_property_cache.isdbt_sb_mode)
-		state->fe[0]->dtv_property_cache.layer[0].segment_count = 13;
-	state->fe[0]->dtv_property_cache.layer[0].modulation = QAM_64;
-	state->fe[0]->dtv_property_cache.layer[0].fec = FEC_2_3;
-	state->fe[0]->dtv_property_cache.layer[0].interleaving = 0;
+		dib8000_write_word(state, 0, (dib8000_read_word(state, 0) & 0x1fff) | (0 << 13) | (1 << 15)); /* P_mode = 0, P_restart_search=1 */
+		dib8000_write_word(state, 1, (dib8000_read_word(state, 1) & 0xfffc) | 0); /* P_guard = 0 */
+		dib8000_write_word(state, 6, 0); /* P_lock0_mask = 0 */
+		dib8000_write_word(state, 7, 0); /* P_lock1_mask = 0 */
+		dib8000_write_word(state, 8, 0); /* P_lock2_mask = 0 */
+		dib8000_write_word(state, 10, (dib8000_read_word(state, 10) & 0x200) | (16 << 4) | (0 << 0)); /* P_search_list=16, P_search_maxtrial=0 */
 
-	//choose the right list, in sb, always do everything
-	if (state->fe[0]->dtv_property_cache.isdbt_sb_mode) {
+		if (state->revision == 0x8090)
+			value = dib8000_wait_lock(state, internal, 10, 10, 10); /* time in ms configure P_search_end0 P_search_end1 P_search_end2 */
+		else
+			value = dib8000_wait_lock(state, internal, 20, 20, 20); /* time in ms configure P_search_end0 P_search_end1 P_search_end2 */
+
+		dib8000_write_word(state, 17, 0);
+		dib8000_write_word(state, 18, 200); /* P_search_rstst = 200 */
+		dib8000_write_word(state, 19, 0);
+		dib8000_write_word(state, 20, 400); /* P_search_rstend = 400 */
+		dib8000_write_word(state, 21, (value >> 16) & 0xffff); /* P_search_checkst */
+		dib8000_write_word(state, 22, value & 0xffff);
+
+		if (state->revision == 0x8090)
+			dib8000_write_word(state, 32, (dib8000_read_word(state, 32) & 0xf0ff) | (0 << 8)); /* P_corm_alpha = 0 */
+		else
+			dib8000_write_word(state, 32, (dib8000_read_word(state, 32) & 0xf0ff) | (9 << 8)); /* P_corm_alpha = 3 */
+		dib8000_write_word(state, 355, 2); /* P_search_param_max = 2 */
+
+		/* P_search_param_select = (1 | 1<<4 | 1 << 8) */
+		dib8000_write_word(state, 356, 0);
+		dib8000_write_word(state, 357, 0x111);
+
+		dib8000_write_word(state, 770, (dib8000_read_word(state, 770) & 0xdfff) | (1 << 13)); /* P_restart_ccg = 1 */
+		dib8000_write_word(state, 770, (dib8000_read_word(state, 770) & 0xdfff) | (0 << 13)); /* P_restart_ccg = 0 */
+		dib8000_write_word(state, 0, (dib8000_read_word(state, 0) & 0x7ff) | (0 << 15) | (1 << 13)); /* P_restart_search = 0; */
+	} else if (state->autosearch_state == AS_SEARCHING_GUARD) {
 		state->fe[0]->dtv_property_cache.transmission_mode = TRANSMISSION_MODE_8K;
 		state->fe[0]->dtv_property_cache.guard_interval = GUARD_INTERVAL_1_8;
-		slist = 7;
-		dib8000_write_word(state, 0, (dib8000_read_word(state, 0) & 0x9fff) | (1 << 13));
+		state->fe[0]->dtv_property_cache.inversion = 0;
+		state->fe[0]->dtv_property_cache.layer[0].modulation = QAM_64;
+		state->fe[0]->dtv_property_cache.layer[0].fec = FEC_2_3;
+		state->fe[0]->dtv_property_cache.layer[0].interleaving = 0;
+		state->fe[0]->dtv_property_cache.layer[0].segment_count = 13;
+
+		slist = 16;
+		state->fe[0]->dtv_property_cache.transmission_mode = state->found_nfft;
+
+		dib8000_set_isdbt_common_channel(state, slist, 1);
+
+		/* set lock_mask values */
+		dib8000_write_word(state, 6, 0x4);
+		if (state->revision == 0x8090)
+			dib8000_write_word(state, 7, ((1 << 12) | (1 << 11) | (1 << 10)));/* tmcc_dec_lock, tmcc_sync_lock, tmcc_data_lock, tmcc_bch_uncor */
+		else
+			dib8000_write_word(state, 7, 0x8);
+		dib8000_write_word(state, 8, 0x1000);
+
+		/* set lock_mask wait time values */
+		if (state->revision == 0x8090)
+			dib8000_wait_lock(state, internal, 50, 100, 1000); /* time in ms configure P_search_end0 P_search_end1 P_search_end2 */
+		else
+			dib8000_wait_lock(state, internal, 50, 200, 1000); /* time in ms configure P_search_end0 P_search_end1 P_search_end2 */
+
+		dib8000_write_word(state, 355, 3); /* P_search_param_max = 3 */
+
+		/* P_search_param_select = 0xf; look for the 4 different guard intervals */
+		dib8000_write_word(state, 356, 0);
+		dib8000_write_word(state, 357, 0xf);
+
+		value = dib8000_read_word(state, 0);
+		dib8000_write_word(state, 0, (u16)((1 << 15) | value));
+		dib8000_read_word(state, 1284);  /* reset the INT. n_irq_pending */
+		dib8000_write_word(state, 0, (u16)value);
 	} else {
-		if (state->fe[0]->dtv_property_cache.guard_interval == GUARD_INTERVAL_AUTO) {
-			if (state->fe[0]->dtv_property_cache.transmission_mode == TRANSMISSION_MODE_AUTO) {
-				slist = 7;
-				dib8000_write_word(state, 0, (dib8000_read_word(state, 0) & 0x9fff) | (1 << 13));	// P_mode = 1 to have autosearch start ok with mode2
-			} else
-				slist = 3;
+		state->fe[0]->dtv_property_cache.inversion = 0;
+		state->fe[0]->dtv_property_cache.layer[0].modulation = QAM_64;
+		state->fe[0]->dtv_property_cache.layer[0].fec = FEC_2_3;
+		state->fe[0]->dtv_property_cache.layer[0].interleaving = 0;
+		state->fe[0]->dtv_property_cache.layer[0].segment_count = 13;
+		if (!state->fe[0]->dtv_property_cache.isdbt_sb_mode)
+			state->fe[0]->dtv_property_cache.layer[0].segment_count = 13;
+
+		/* choose the right list, in sb, always do everything */
+		if (state->fe[0]->dtv_property_cache.isdbt_sb_mode) {
+			slist = 7;
+			dib8000_write_word(state, 0, (dib8000_read_word(state, 0) & 0x9fff) | (1 << 13));
 		} else {
-			if (state->fe[0]->dtv_property_cache.transmission_mode == TRANSMISSION_MODE_AUTO) {
-				slist = 2;
-				dib8000_write_word(state, 0, (dib8000_read_word(state, 0) & 0x9fff) | (1 << 13));	// P_mode = 1
-			} else
-				slist = 0;
+			if (state->fe[0]->dtv_property_cache.guard_interval == GUARD_INTERVAL_AUTO) {
+				if (state->fe[0]->dtv_property_cache.transmission_mode == TRANSMISSION_MODE_AUTO) {
+					state->fe[0]->dtv_property_cache.transmission_mode = TRANSMISSION_MODE_8K;
+					state->fe[0]->dtv_property_cache.guard_interval = GUARD_INTERVAL_1_8;
+					slist = 7;
+					dib8000_write_word(state, 0, (dib8000_read_word(state, 0) & 0x9fff) | (1 << 13));  /* P_mode = 1 to have autosearch start ok with mode2 */
+				} else {
+					state->fe[0]->dtv_property_cache.guard_interval = GUARD_INTERVAL_1_8;
+					slist = 3;
+				}
+			} else {
+				if (state->fe[0]->dtv_property_cache.transmission_mode == TRANSMISSION_MODE_AUTO) {
+					state->fe[0]->dtv_property_cache.transmission_mode = TRANSMISSION_MODE_8K;
+					slist = 2;
+					dib8000_write_word(state, 0, (dib8000_read_word(state, 0) & 0x9fff) | (1 << 13));  /* P_mode = 1 */
+				} else
+					slist = 0;
+			}
 		}
+		dprintk("Using list for autosearch : %d", slist);
 
-		if (state->fe[0]->dtv_property_cache.transmission_mode == TRANSMISSION_MODE_AUTO)
-			state->fe[0]->dtv_property_cache.transmission_mode = TRANSMISSION_MODE_8K;
-		if (state->fe[0]->dtv_property_cache.guard_interval == GUARD_INTERVAL_AUTO)
-			state->fe[0]->dtv_property_cache.guard_interval = GUARD_INTERVAL_1_8;
-
-		dprintk("using list for autosearch : %d", slist);
-		dib8000_set_channel(state, (unsigned char)slist, 1);
-		//dib8000_write_word(state, 0, (dib8000_read_word(state, 0) & 0x9fff) | (1 << 13));  // P_mode = 1
-
-		factor = 1;
+		dib8000_set_isdbt_common_channel(state, slist, 1);
 
-		//set lock_mask values
+		/* set lock_mask values */
 		dib8000_write_word(state, 6, 0x4);
-		dib8000_write_word(state, 7, 0x8);
+		if (state->revision == 0x8090)
+			dib8000_write_word(state, 7, (1 << 12) | (1 << 11) | (1 << 10));
+		else
+			dib8000_write_word(state, 7, 0x8);
 		dib8000_write_word(state, 8, 0x1000);
 
-		//set lock_mask wait time values
-		value = 50 * state->cfg.pll->internal * factor;
-		dib8000_write_word(state, 11, (u16) ((value >> 16) & 0xffff));	// lock0 wait time
-		dib8000_write_word(state, 12, (u16) (value & 0xffff));	// lock0 wait time
-		value = 100 * state->cfg.pll->internal * factor;
-		dib8000_write_word(state, 13, (u16) ((value >> 16) & 0xffff));	// lock1 wait time
-		dib8000_write_word(state, 14, (u16) (value & 0xffff));	// lock1 wait time
-		value = 1000 * state->cfg.pll->internal * factor;
-		dib8000_write_word(state, 15, (u16) ((value >> 16) & 0xffff));	// lock2 wait time
-		dib8000_write_word(state, 16, (u16) (value & 0xffff));	// lock2 wait time
+		/* set lock_mask wait time values */
+		if (state->revision == 0x8090)
+			dib8000_wait_lock(state, internal, 50, 200, 1000); /* time in ms configure P_search_end0 P_search_end1 P_search_end2 */
+		else
+			dib8000_wait_lock(state, internal, 50, 100, 1000); /* time in ms configure P_search_end0 P_search_end1 P_search_end2 */
 
 		value = dib8000_read_word(state, 0);
-		dib8000_write_word(state, 0, (u16) ((1 << 15) | value));
-		dib8000_read_word(state, 1284);	// reset the INT. n_irq_pending
-		dib8000_write_word(state, 0, (u16) value);
-
+		dib8000_write_word(state, 0, (u16)((1 << 15) | value));
+		dib8000_read_word(state, 1284);  /* reset the INT. n_irq_pending */
+		dib8000_write_word(state, 0, (u16)value);
 	}
-
 	return 0;
 }
 
@@ -2663,96 +2577,623 @@ static int dib8000_autosearch_irq(struct dvb_frontend *fe)
 	struct dib8000_state *state = fe->demodulator_priv;
 	u16 irq_pending = dib8000_read_word(state, 1284);
 
-	if (irq_pending & 0x1) {	// failed
-		dprintk("dib8000_autosearch_irq failed");
-		return 1;
-	}
+	if (state->autosearch_state == AS_SEARCHING_FFT) {
+		if (irq_pending & 0x1) {
+			dprintk("dib8000_autosearch_irq: max correlation result available");
+			return 3;
+		}
+	} else {
+		if (irq_pending & 0x1) {	/* failed */
+			dprintk("dib8000_autosearch_irq failed");
+			return 1;
+		}
 
-	if (irq_pending & 0x2) {	// succeeded
-		dprintk("dib8000_autosearch_irq succeeded");
-		return 2;
+		if (irq_pending & 0x2) {	/* succeeded */
+			dprintk("dib8000_autosearch_irq succeeded");
+			return 2;
+		}
 	}
 
 	return 0;		// still pending
 }
 
-static int dib8000_tune(struct dvb_frontend *fe)
+static void dib8000_viterbi_state(struct dib8000_state *state, u8 onoff)
 {
-	struct dib8000_state *state = fe->demodulator_priv;
-	int ret = 0;
-	u16 lock, value, mode;
+	u16 tmp;
 
-	// we are already tuned - just resuming from suspend
-	if (state == NULL)
-		return -EINVAL;
+	tmp = dib8000_read_word(state, 771);
+	if (onoff) /* start P_restart_chd : channel_decoder */
+		dib8000_write_word(state, 771, tmp & 0xfffd);
+	else /* stop P_restart_chd : channel_decoder */
+		dib8000_write_word(state, 771, tmp | (1<<1));
+}
 
-	mode = fft_to_mode(state);
+static void dib8000_set_dds(struct dib8000_state *state, s32 offset_khz)
+{
+	s16 unit_khz_dds_val;
+	u32 abs_offset_khz = ABS(offset_khz);
+	u32 dds = state->cfg.pll->ifreq & 0x1ffffff;
+	u8 invert = !!(state->cfg.pll->ifreq & (1 << 25));
+	u8 ratio;
 
-	dib8000_set_bandwidth(fe, state->fe[0]->dtv_property_cache.bandwidth_hz / 1000);
-	dib8000_set_channel(state, 0, 0);
+	if (state->revision == 0x8090) {
+		ratio = 4;
+		unit_khz_dds_val = (1<<26) / (dib8000_read32(state, 23) / 1000);
+		if (offset_khz < 0)
+			dds = (1 << 26) - (abs_offset_khz * unit_khz_dds_val);
+		else
+			dds = (abs_offset_khz * unit_khz_dds_val);
 
-	// restart demod
-	ret |= dib8000_write_word(state, 770, 0x4000);
-	ret |= dib8000_write_word(state, 770, 0x0000);
-	msleep(45);
+		if (invert)
+			dds = (1<<26) - dds;
+	} else {
+		ratio = 2;
+		unit_khz_dds_val = (u16) (67108864 / state->cfg.pll->internal);
 
-	/* P_ctrl_inh_cor=0, P_ctrl_alpha_cor=4, P_ctrl_inh_isi=0, P_ctrl_alpha_isi=3 */
-	/*  ret |= dib8000_write_word(state, 29, (0 << 9) | (4 << 5) | (0 << 4) | (3 << 0) );  workaround inh_isi stays at 1 */
+		if (offset_khz < 0)
+			unit_khz_dds_val *= -1;
 
-	// never achieved a lock before - wait for timfreq to update
-	if (state->timf == 0) {
-		if (state->fe[0]->dtv_property_cache.isdbt_sb_mode == 1) {
-			if (state->fe[0]->dtv_property_cache.isdbt_partial_reception == 0)
-				msleep(300);
-			else	// Sound Broadcasting mode 3 seg
-				msleep(500);
-		} else		// 13 seg
-			msleep(200);
+		/* IF tuner */
+		if (invert)
+			dds -= abs_offset_khz * unit_khz_dds_val;
+		else
+			dds += abs_offset_khz * unit_khz_dds_val;
+	}
+
+	dprintk("setting a DDS frequency offset of %c%dkHz", invert ? '-' : ' ', dds / unit_khz_dds_val);
+
+	if (abs_offset_khz <= (state->cfg.pll->internal / ratio)) {
+		/* Max dds offset is the half of the demod freq */
+		dib8000_write_word(state, 26, invert);
+		dib8000_write_word(state, 27, (u16)(dds >> 16) & 0x1ff);
+		dib8000_write_word(state, 28, (u16)(dds & 0xffff));
 	}
-	if (state->fe[0]->dtv_property_cache.isdbt_sb_mode == 1) {
-		if (state->fe[0]->dtv_property_cache.isdbt_partial_reception == 0) {
+}
 
-			/* P_timf_alpha = (13-P_mode) , P_corm_alpha=6, P_corm_thres=0x40  alpha to check on board */
-			dib8000_write_word(state, 32, ((13 - mode) << 12) | (6 << 8) | 0x40);
-			//dib8000_write_word(state, 32, (8 << 12) | (6 << 8) | 0x80);
+static void dib8000_set_frequency_offset(struct dib8000_state *state)
+{
+	int i;
+	u32 current_rf;
+	int total_dds_offset_khz;
 
-			/*  P_ctrl_sfreq_step= (12-P_mode)   P_ctrl_sfreq_inh =0     P_ctrl_pha_off_max  */
-			ret |= dib8000_write_word(state, 37, (12 - mode) | ((5 + mode) << 5));
+	if (state->fe[0]->ops.tuner_ops.get_frequency)
+		state->fe[0]->ops.tuner_ops.get_frequency(state->fe[0], &current_rf);
+	else
+		current_rf = state->fe[0]->dtv_property_cache.frequency;
+	current_rf /= 1000;
+	total_dds_offset_khz = (int)current_rf - (int)state->fe[0]->dtv_property_cache.frequency / 1000;
 
-		} else {	// Sound Broadcasting mode 3 seg
+	if (state->fe[0]->dtv_property_cache.isdbt_sb_mode) {
+		state->subchannel = state->fe[0]->dtv_property_cache.isdbt_sb_subchannel;
 
-			/* P_timf_alpha = (12-P_mode) , P_corm_alpha=6, P_corm_thres=0x60  alpha to check on board */
-			dib8000_write_word(state, 32, ((12 - mode) << 12) | (6 << 8) | 0x60);
+		i = dib8000_read_word(state, 26) & 1; /* P_dds_invspec */
+		dib8000_write_word(state, 26, state->fe[0]->dtv_property_cache.inversion ^ i);
 
-			ret |= dib8000_write_word(state, 37, (11 - mode) | ((5 + mode) << 5));
+		if (state->cfg.pll->ifreq == 0) { /* low if tuner */
+			if ((state->fe[0]->dtv_property_cache.inversion ^ i) == 0)
+				dib8000_write_word(state, 26, dib8000_read_word(state, 26) | 1);
+		} else {
+			if ((state->fe[0]->dtv_property_cache.inversion ^ i) == 0)
+				total_dds_offset_khz *= -1;
 		}
+	}
 
-	} else {		// 13 seg
-		/* P_timf_alpha = 8 , P_corm_alpha=6, P_corm_thres=0x80  alpha to check on board */
-		dib8000_write_word(state, 32, ((11 - mode) << 12) | (6 << 8) | 0x80);
+	dprintk("%dkhz tuner offset (frequency = %dHz & current_rf = %dHz) total_dds_offset_hz = %d", state->fe[0]->dtv_property_cache.frequency - current_rf, state->fe[0]->dtv_property_cache.frequency, current_rf, total_dds_offset_khz);
 
-		ret |= dib8000_write_word(state, 37, (10 - mode) | ((5 + mode) << 5));
+	/* apply dds offset now */
+	dib8000_set_dds(state, total_dds_offset_khz);
+}
+
+static u16 LUT_isdbt_symbol_duration[4] = { 26, 101, 63 };
+u32 dib8000_get_symbol_duration(struct dib8000_state *state)
+{
+	u16 i;
 
+	switch (state->fe[0]->dtv_property_cache.transmission_mode) {
+	case TRANSMISSION_MODE_2K:
+			i = 0;
+			break;
+	case TRANSMISSION_MODE_4K:
+			i = 2;
+			break;
+	default:
+	case TRANSMISSION_MODE_AUTO:
+	case TRANSMISSION_MODE_8K:
+			i = 1;
+			break;
 	}
 
-	// we achieved a coff_cpil_lock - it's time to update the timf
-	if (state->revision != 0x8090)
-		lock = dib8000_read_word(state, 568);
+	return (LUT_isdbt_symbol_duration[i] / (state->fe[0]->dtv_property_cache.bandwidth_hz / 1000)) + 1;
+}
+
+static void dib8000_set_isdbt_loop_params(struct dib8000_state *state, enum param_loop_step loop_step)
+{
+	u16 reg_32 = 0, reg_37 = 0;
+
+	switch (loop_step) {
+	case LOOP_TUNE_1:
+			if (state->fe[0]->dtv_property_cache.isdbt_sb_mode)  {
+				if (state->fe[0]->dtv_property_cache.isdbt_partial_reception == 0) {
+					reg_32 = ((11 - state->mode) << 12) | (6 << 8) | 0x40; /* P_timf_alpha = (11-P_mode), P_corm_alpha=6, P_corm_thres=0x40 */
+					reg_37 = (3 << 5) | (0 << 4) | (10 - state->mode); /* P_ctrl_pha_off_max=3   P_ctrl_sfreq_inh =0  P_ctrl_sfreq_step = (10-P_mode)  */
+				} else { /* Sound Broadcasting mode 3 seg */
+					reg_32 = ((10 - state->mode) << 12) | (6 << 8) | 0x60; /* P_timf_alpha = (10-P_mode), P_corm_alpha=6, P_corm_thres=0x60 */
+					reg_37 = (3 << 5) | (0 << 4) | (9 - state->mode); /* P_ctrl_pha_off_max=3   P_ctrl_sfreq_inh =0  P_ctrl_sfreq_step = (9-P_mode)  */
+				}
+			} else { /* 13-seg start conf offset loop parameters */
+				reg_32 = ((9 - state->mode) << 12) | (6 << 8) | 0x80; /* P_timf_alpha = (9-P_mode, P_corm_alpha=6, P_corm_thres=0x80 */
+				reg_37 = (3 << 5) | (0 << 4) | (8 - state->mode); /* P_ctrl_pha_off_max=3   P_ctrl_sfreq_inh =0  P_ctrl_sfreq_step = 9  */
+			}
+			break;
+	case LOOP_TUNE_2:
+			if (state->fe[0]->dtv_property_cache.isdbt_sb_mode)  {
+				if (state->fe[0]->dtv_property_cache.isdbt_partial_reception == 0) {  /* Sound Broadcasting mode 1 seg */
+					reg_32 = ((13-state->mode) << 12) | (6 << 8) | 0x40; /* P_timf_alpha = (13-P_mode) , P_corm_alpha=6, P_corm_thres=0x40*/
+					reg_37 = (12-state->mode) | ((5 + state->mode) << 5);
+				} else {  /* Sound Broadcasting mode 3 seg */
+					reg_32 = ((12-state->mode) << 12) | (6 << 8) | 0x60; /* P_timf_alpha = (12-P_mode) , P_corm_alpha=6, P_corm_thres=0x60 */
+					reg_37 = (11-state->mode) | ((5 + state->mode) << 5);
+				}
+			} else {  /* 13 seg */
+				reg_32 = ((11-state->mode) << 12) | (6 << 8) | 0x80; /* P_timf_alpha = 8 , P_corm_alpha=6, P_corm_thres=0x80 */
+				reg_37 = ((5+state->mode) << 5) | (10 - state->mode);
+			}
+			break;
+	}
+	dib8000_write_word(state, 32, reg_32);
+	dib8000_write_word(state, 37, reg_37);
+}
+
+static void dib8000_demod_restart(struct dib8000_state *state)
+{
+	dib8000_write_word(state, 770, 0x4000);
+	dib8000_write_word(state, 770, 0x0000);
+	return;
+}
+
+static void dib8000_set_sync_wait(struct dib8000_state *state)
+{
+	u16 sync_wait = 64;
+
+	/* P_dvsy_sync_wait - reuse mode */
+	switch (state->fe[0]->dtv_property_cache.transmission_mode) {
+	case TRANSMISSION_MODE_8K:
+			sync_wait = 256;
+			break;
+	case TRANSMISSION_MODE_4K:
+			sync_wait = 128;
+			break;
+	default:
+	case TRANSMISSION_MODE_2K:
+			sync_wait =  64;
+			break;
+	}
+
+	if (state->cfg.diversity_delay == 0)
+		sync_wait = (sync_wait * (1 << (state->fe[0]->dtv_property_cache.guard_interval)) * 3) / 2 + 48; /* add 50% SFN margin + compensate for one DVSY-fifo */
+	else
+		sync_wait = (sync_wait * (1 << (state->fe[0]->dtv_property_cache.guard_interval)) * 3) / 2 + state->cfg.diversity_delay; /* add 50% SFN margin + compensate for DVSY-fifo */
+
+	dib8000_write_word(state, 273, (dib8000_read_word(state, 273) & 0x000f) | (sync_wait << 4));
+}
+
+static u32 dib8000_get_timeout(struct dib8000_state *state, u32 delay, enum timeout_mode mode)
+{
+	if (mode == SYMBOL_DEPENDENT_ON)
+		return systime() + (delay * state->symbol_duration);
 	else
-		lock = dib8000_read_word(state, 570);
-	if ((lock >> 11) & 0x1)
-		dib8000_update_timf(state);
+		return systime() + delay;
+}
 
-	//now that tune is finished, lock0 should lock on fec_mpeg to output this lock on MP_LOCK. It's changed in autosearch start
-	dib8000_write_word(state, 6, 0x200);
+static s32 dib8000_get_status(struct dvb_frontend *fe)
+{
+	struct dib8000_state *state = fe->demodulator_priv;
+	return state->status;
+}
 
-	if (state->revision == 0x8002) {
-		value = dib8000_read_word(state, 903);
-		dib8000_write_word(state, 903, value & ~(1 << 3));
-		msleep(1);
-		dib8000_write_word(state, 903, value | (1 << 3));
+enum frontend_tune_state dib8000_get_tune_state(struct dvb_frontend *fe)
+{
+	struct dib8000_state *state = fe->demodulator_priv;
+	return state->tune_state;
+}
+EXPORT_SYMBOL(dib8000_get_tune_state);
+
+int dib8000_set_tune_state(struct dvb_frontend *fe, enum frontend_tune_state tune_state)
+{
+	struct dib8000_state *state = fe->demodulator_priv;
+
+	state->tune_state = tune_state;
+	return 0;
+}
+EXPORT_SYMBOL(dib8000_set_tune_state);
+
+static int dib8000_tune_restart_from_demod(struct dvb_frontend *fe)
+{
+	struct dib8000_state *state = fe->demodulator_priv;
+
+	state->status = FE_STATUS_TUNE_PENDING;
+	state->tune_state = CT_DEMOD_START;
+	return 0;
+}
+
+static u16 dib8000_read_lock(struct dvb_frontend *fe)
+{
+	struct dib8000_state *state = fe->demodulator_priv;
+
+	if (state->revision == 0x8090)
+		return dib8000_read_word(state, 570);
+	return dib8000_read_word(state, 568);
+}
+
+static int dib8090p_init_sdram(struct dib8000_state *state)
+{
+	u16 reg = 0;
+	dprintk("init sdram");
+
+	reg = dib8000_read_word(state, 274) & 0xfff0;
+	dib8000_write_word(state, 274, reg | 0x7); /* P_dintlv_delay_ram = 7 because of MobileSdram */
+
+	dib8000_write_word(state, 1803, (7 << 2));
+
+	reg = dib8000_read_word(state, 1280);
+	dib8000_write_word(state, 1280,  reg | (1 << 2)); /* force restart P_restart_sdram */
+	dib8000_write_word(state, 1280,  reg); /* release restart P_restart_sdram */
+
+	return 0;
+}
+
+static int dib8000_tune(struct dvb_frontend *fe)
+{
+	struct dib8000_state *state = fe->demodulator_priv;
+	enum frontend_tune_state *tune_state = &state->tune_state;
+
+	u16 locks, deeper_interleaver = 0, i;
+	int ret = 1; /* 1 symbol duration (in 100us unit) delay most of the time */
+
+	u32 *timeout = &state->timeout;
+	u32 now = systime();
+#ifdef DIB8000_AGC_FREEZE
+	u16 agc1, agc2;
+#endif
+
+	u32 corm[4] = {0, 0, 0, 0};
+	u8 find_index, max_value;
+
+#if 0
+	if (*tune_state < CT_DEMOD_STOP)
+		dprintk("IN: context status = %d, TUNE_STATE %d autosearch step = %u systime = %u", state->channel_parameters_set, *tune_state, state->autosearch_state, now);
+#endif
+
+	switch (*tune_state) {
+	case CT_DEMOD_START: /* 30 */
+			if (state->revision == 0x8090)
+				dib8090p_init_sdram(state);
+			state->status = FE_STATUS_TUNE_PENDING;
+			if ((state->fe[0]->dtv_property_cache.delivery_system != SYS_ISDBT) ||
+					(state->fe[0]->dtv_property_cache.inversion == INVERSION_AUTO) ||
+					(state->fe[0]->dtv_property_cache.transmission_mode == TRANSMISSION_MODE_AUTO) ||
+					(state->fe[0]->dtv_property_cache.guard_interval == GUARD_INTERVAL_AUTO) ||
+					(((state->fe[0]->dtv_property_cache.isdbt_layer_enabled & (1 << 0)) != 0) &&
+					 (state->fe[0]->dtv_property_cache.layer[0].segment_count != 0xff) &&
+					 (state->fe[0]->dtv_property_cache.layer[0].segment_count != 0) &&
+					 ((state->fe[0]->dtv_property_cache.layer[0].modulation == QAM_AUTO) ||
+					  (state->fe[0]->dtv_property_cache.layer[0].fec == FEC_AUTO))) ||
+					(((state->fe[0]->dtv_property_cache.isdbt_layer_enabled & (1 << 1)) != 0) &&
+					 (state->fe[0]->dtv_property_cache.layer[1].segment_count != 0xff) &&
+					 (state->fe[0]->dtv_property_cache.layer[1].segment_count != 0) &&
+					 ((state->fe[0]->dtv_property_cache.layer[1].modulation == QAM_AUTO) ||
+					  (state->fe[0]->dtv_property_cache.layer[1].fec == FEC_AUTO))) ||
+					(((state->fe[0]->dtv_property_cache.isdbt_layer_enabled & (1 << 2)) != 0) &&
+					 (state->fe[0]->dtv_property_cache.layer[2].segment_count != 0xff) &&
+					 (state->fe[0]->dtv_property_cache.layer[2].segment_count != 0) &&
+					 ((state->fe[0]->dtv_property_cache.layer[2].modulation == QAM_AUTO) ||
+					  (state->fe[0]->dtv_property_cache.layer[2].fec == FEC_AUTO))) ||
+					(((state->fe[0]->dtv_property_cache.layer[0].segment_count == 0) ||
+					  ((state->fe[0]->dtv_property_cache.isdbt_layer_enabled & (1 << 0)) == 0)) &&
+					 ((state->fe[0]->dtv_property_cache.layer[1].segment_count == 0) ||
+					  ((state->fe[0]->dtv_property_cache.isdbt_layer_enabled & (2 << 0)) == 0)) &&
+					 ((state->fe[0]->dtv_property_cache.layer[2].segment_count == 0) || ((state->fe[0]->dtv_property_cache.isdbt_layer_enabled & (3 << 0)) == 0))))
+				state->channel_parameters_set = 0; /* auto search */
+			else
+				state->channel_parameters_set = 1; /* channel parameters are known */
+
+			dib8000_viterbi_state(state, 0); /* force chan dec in restart */
+
+			/* Layer monit */
+			dib8000_write_word(state, 285, dib8000_read_word(state, 285) & 0x60);
+
+			dib8000_set_frequency_offset(state);
+			dib8000_set_bandwidth(fe, state->fe[0]->dtv_property_cache.bandwidth_hz / 1000);
+
+			if (state->channel_parameters_set == 0) { /* The channel struct is unknown, search it ! */
+#ifdef DIB8000_AGC_FREEZE
+				if (state->revision != 0x8090) {
+					state->agc1_max = dib8000_read_word(state, 108);
+					state->agc1_min = dib8000_read_word(state, 109);
+					state->agc2_max = dib8000_read_word(state, 110);
+					state->agc2_min = dib8000_read_word(state, 111);
+					agc1 = dib8000_read_word(state, 388);
+					agc2 = dib8000_read_word(state, 389);
+					dib8000_write_word(state, 108, agc1);
+					dib8000_write_word(state, 109, agc1);
+					dib8000_write_word(state, 110, agc2);
+					dib8000_write_word(state, 111, agc2);
+				}
+#endif
+				state->autosearch_state = AS_SEARCHING_FFT;
+				state->found_nfft = TRANSMISSION_MODE_AUTO;
+				state->found_guard = GUARD_INTERVAL_AUTO;
+				*tune_state = CT_DEMOD_SEARCH_NEXT;
+			} else { /* we already know the channel struct so TUNE only ! */
+				state->autosearch_state = AS_DONE;
+				*tune_state = CT_DEMOD_STEP_3;
+			}
+			state->symbol_duration = dib8000_get_symbol_duration(state);
+			break;
+
+	case CT_DEMOD_SEARCH_NEXT: /* 51 */
+			dib8000_autosearch_start(fe);
+			if (state->revision == 0x8090)
+				ret = 50;
+			else
+				ret = 15;
+			*tune_state = CT_DEMOD_STEP_1;
+			break;
+
+	case CT_DEMOD_STEP_1: /* 31 */
+			switch (dib8000_autosearch_irq(fe)) {
+			case 1: /* fail */
+					state->status = FE_STATUS_TUNE_FAILED;
+					state->autosearch_state = AS_DONE;
+					*tune_state = CT_DEMOD_STOP; /* else we are done here */
+					break;
+			case 2: /* Succes */
+					state->status = FE_STATUS_FFT_SUCCESS; /* signal to the upper layer, that there was a channel found and the parameters can be read */
+					*tune_state = CT_DEMOD_STEP_3;
+					if (state->autosearch_state == AS_SEARCHING_GUARD)
+						*tune_state = CT_DEMOD_STEP_2;
+					else
+						state->autosearch_state = AS_DONE;
+					break;
+			case 3: /* Autosearch FFT max correlation endded */
+					*tune_state = CT_DEMOD_STEP_2;
+					break;
+			}
+			break;
+
+	case CT_DEMOD_STEP_2:
+			switch (state->autosearch_state) {
+			case AS_SEARCHING_FFT:
+					/* searching for the correct FFT */
+				if (state->revision == 0x8090) {
+					corm[2] = (dib8000_read_word(state, 596) << 16) | (dib8000_read_word(state, 597));
+					corm[1] = (dib8000_read_word(state, 598) << 16) | (dib8000_read_word(state, 599));
+					corm[0] = (dib8000_read_word(state, 600) << 16) | (dib8000_read_word(state, 601));
+				} else {
+					corm[2] = (dib8000_read_word(state, 594) << 16) | (dib8000_read_word(state, 595));
+					corm[1] = (dib8000_read_word(state, 596) << 16) | (dib8000_read_word(state, 597));
+					corm[0] = (dib8000_read_word(state, 598) << 16) | (dib8000_read_word(state, 599));
+				}
+					/* dprintk("corm fft: %u %u %u", corm[0], corm[1], corm[2]); */
+
+					max_value = 0;
+					for (find_index = 1 ; find_index < 3 ; find_index++) {
+						if (corm[max_value] < corm[find_index])
+							max_value = find_index ;
+					}
+
+					switch (max_value) {
+					case 0:
+							state->found_nfft = TRANSMISSION_MODE_2K;
+							break;
+					case 1:
+							state->found_nfft = TRANSMISSION_MODE_4K;
+							break;
+					case 2:
+					default:
+							state->found_nfft = TRANSMISSION_MODE_8K;
+							break;
+					}
+					/* dprintk("Autosearch FFT has found Mode %d", max_value + 1); */
+
+					*tune_state = CT_DEMOD_SEARCH_NEXT;
+					state->autosearch_state = AS_SEARCHING_GUARD;
+					if (state->revision == 0x8090)
+						ret = 50;
+					else
+						ret = 10;
+					break;
+			case AS_SEARCHING_GUARD:
+					/* searching for the correct guard interval */
+					if (state->revision == 0x8090)
+						state->found_guard = dib8000_read_word(state, 572) & 0x3;
+					else
+						state->found_guard = dib8000_read_word(state, 570) & 0x3;
+					/* dprintk("guard interval found=%i", state->found_guard); */
+
+					*tune_state = CT_DEMOD_STEP_3;
+					break;
+			default:
+					/* the demod should never be in this state */
+					state->status = FE_STATUS_TUNE_FAILED;
+					state->autosearch_state = AS_DONE;
+					*tune_state = CT_DEMOD_STOP; /* else we are done here */
+					break;
+			}
+			break;
+
+	case CT_DEMOD_STEP_3: /* 33 */
+			state->symbol_duration = dib8000_get_symbol_duration(state);
+			dib8000_set_isdbt_loop_params(state, LOOP_TUNE_1);
+			dib8000_set_isdbt_common_channel(state, 0, 0);/* setting the known channel parameters here */
+			*tune_state = CT_DEMOD_STEP_4;
+			break;
+
+	case CT_DEMOD_STEP_4: /* (34) */
+			dib8000_demod_restart(state);
+
+			dib8000_set_sync_wait(state);
+			dib8000_set_diversity_in(state->fe[0], state->diversity_onoff);
+
+			locks = (dib8000_read_word(state, 180) >> 6) & 0x3f; /* P_coff_winlen ? */
+			/* coff should lock over P_coff_winlen ofdm symbols : give 3 times this lenght to lock */
+			*timeout = dib8000_get_timeout(state, 2 * locks, SYMBOL_DEPENDENT_ON);
+			*tune_state = CT_DEMOD_STEP_5;
+			break;
+
+	case CT_DEMOD_STEP_5: /* (35) */
+			locks = dib8000_read_lock(fe);
+			if (locks & (0x3 << 11)) { /* coff-lock and off_cpil_lock achieved */
+				dib8000_update_timf(state); /* we achieved a coff_cpil_lock - it's time to update the timf */
+				if (!state->differential_constellation) {
+					/* 2 times lmod4_win_len + 10 symbols (pipe delay after coff + nb to compute a 1st correlation) */
+					*timeout = dib8000_get_timeout(state, (20 * ((dib8000_read_word(state, 188)>>5)&0x1f)), SYMBOL_DEPENDENT_ON);
+					*tune_state = CT_DEMOD_STEP_7;
+				} else {
+					*tune_state = CT_DEMOD_STEP_8;
+				}
+			} else if (now > *timeout) {
+				*tune_state = CT_DEMOD_STEP_6; /* goto check for diversity input connection */
+			}
+			break;
+
+	case CT_DEMOD_STEP_6: /* (36)  if there is an input (diversity) */
+			if ((state->fe[1] != NULL) && (state->output_mode != OUTMODE_DIVERSITY)) {
+				/* if there is a diversity fe in input and this fe is has not already failled : wait here until this this fe has succedeed or failled */
+				if (dib8000_get_status(state->fe[1]) <= FE_STATUS_STD_SUCCESS) /* Something is locked on the input fe */
+					*tune_state = CT_DEMOD_STEP_8; /* go for mpeg */
+				else if (dib8000_get_status(state->fe[1]) >= FE_STATUS_TUNE_TIME_TOO_SHORT) { /* fe in input failled also, break the current one */
+					*tune_state = CT_DEMOD_STOP; /* else we are done here ; step 8 will close the loops and exit */
+					dib8000_viterbi_state(state, 1); /* start viterbi chandec */
+					dib8000_set_isdbt_loop_params(state, LOOP_TUNE_2);
+					state->status = FE_STATUS_TUNE_FAILED;
+				}
+			} else {
+				dib8000_viterbi_state(state, 1); /* start viterbi chandec */
+				dib8000_set_isdbt_loop_params(state, LOOP_TUNE_2);
+				*tune_state = CT_DEMOD_STOP; /* else we are done here ; step 8 will close the loops and exit */
+				state->status = FE_STATUS_TUNE_FAILED;
+			}
+			break;
+
+	case CT_DEMOD_STEP_7: /* 37 */
+			locks = dib8000_read_lock(fe);
+			if (locks & (1<<10)) { /* lmod4_lock */
+				ret = 14; /* wait for 14 symbols */
+				*tune_state = CT_DEMOD_STEP_8;
+			} else if (now > *timeout)
+				*tune_state = CT_DEMOD_STEP_6; /* goto check for diversity input connection */
+			break;
+
+	case CT_DEMOD_STEP_8: /* 38 */
+			dib8000_viterbi_state(state, 1); /* start viterbi chandec */
+			dib8000_set_isdbt_loop_params(state, LOOP_TUNE_2);
+
+			/* mpeg will never lock on this condition because init_prbs is not set : search for it !*/
+			if (state->fe[0]->dtv_property_cache.isdbt_sb_mode && state->fe[0]->dtv_property_cache.isdbt_sb_subchannel == -1 && !state->differential_constellation) {
+				state->subchannel = 0;
+				*tune_state = CT_DEMOD_STEP_11;
+			} else {
+				*tune_state = CT_DEMOD_STEP_9;
+				state->status = FE_STATUS_LOCKED;
+			}
+			break;
+
+	case CT_DEMOD_STEP_9: /* 39 */
+			if ((state->revision == 0x8090) || ((dib8000_read_word(state, 1291) >> 9) & 0x1)) { /* fe capable of deinterleaving : esram */
+				/* defines timeout for mpeg lock depending on interleaver lenght of longest layer */
+				for (i = 0; i < 3; i++) {
+					if (state->fe[0]->dtv_property_cache.layer[i].interleaving >= deeper_interleaver) {
+						dprintk("layer%i: time interleaver = %d ", i, state->fe[0]->dtv_property_cache.layer[i].interleaving);
+						if (state->fe[0]->dtv_property_cache.layer[i].segment_count > 0) { /* valid layer */
+							deeper_interleaver = state->fe[0]->dtv_property_cache.layer[0].interleaving;
+							state->longest_intlv_layer = i;
+						}
+					}
+				}
+
+				if (deeper_interleaver == 0)
+					locks = 2; /* locks is the tmp local variable name */
+				else if (deeper_interleaver == 3)
+					locks = 8;
+				else
+					locks = 2 * deeper_interleaver;
+
+				if (state->diversity_onoff != 0) /* because of diversity sync */
+					locks *= 2;
+
+				*timeout = now + (2000 * locks); /* give the mpeg lock 800ms if sram is present */
+				dprintk("Deeper interleaver mode = %d on layer %d : timeout mult factor = %d => will use timeout = %d", deeper_interleaver, state->longest_intlv_layer, locks, *timeout);
+
+				*tune_state = CT_DEMOD_STEP_10;
+			} else
+				*tune_state = CT_DEMOD_STOP;
+			break;
+
+	case CT_DEMOD_STEP_10: /* 40 */
+			locks = dib8000_read_lock(fe);
+			if (locks&(1<<(7-state->longest_intlv_layer))) { /* mpeg lock : check the longest one */
+				dprintk("Mpeg locks [ L0 : %d | L1 : %d | L2 : %d ]", (locks>>7)&0x1, (locks>>6)&0x1, (locks>>5)&0x1);
+				if (state->fe[0]->dtv_property_cache.isdbt_sb_mode && state->fe[0]->dtv_property_cache.isdbt_sb_subchannel == -1 && !state->differential_constellation)
+					/* signal to the upper layer, that there was a channel found and the parameters can be read */
+					state->status = FE_STATUS_DEMOD_SUCCESS;
+				else
+					state->status = FE_STATUS_DATA_LOCKED;
+				*tune_state = CT_DEMOD_STOP;
+			} else if (now > *timeout) {
+				if (state->fe[0]->dtv_property_cache.isdbt_sb_mode && state->fe[0]->dtv_property_cache.isdbt_sb_subchannel == -1 && !state->differential_constellation) { /* continue to try init prbs autosearch */
+					state->subchannel += 3;
+					*tune_state = CT_DEMOD_STEP_11;
+				} else { /* we are done mpeg of the longest interleaver xas not locking but let's try if an other layer has locked in the same time */
+					if (locks & (0x7<<5)) {
+						dprintk("Mpeg locks [ L0 : %d | L1 : %d | L2 : %d ]", (locks>>7)&0x1, (locks>>6)&0x1, (locks>>5)&0x1);
+						state->status = FE_STATUS_DATA_LOCKED;
+					} else
+						state->status = FE_STATUS_TUNE_FAILED;
+					*tune_state = CT_DEMOD_STOP;
+				}
+			}
+			break;
+
+	case CT_DEMOD_STEP_11:  /* 41 : init prbs autosearch */
+			if (state->subchannel <= 41) {
+				dib8000_set_subchannel_prbs(state, dib8000_get_init_prbs(state, state->subchannel));
+				*tune_state = CT_DEMOD_STEP_9;
+			} else {
+				*tune_state = CT_DEMOD_STOP;
+				state->status = FE_STATUS_TUNE_FAILED;
+			}
+			break;
+
+	default:
+			break;
+	}
+
+	/* tuning is finished - cleanup the demod */
+	switch (*tune_state) {
+	case CT_DEMOD_STOP: /* (42) */
+#ifdef DIB8000_AGC_FREEZE
+			if ((state->revision != 0x8090) && (state->agc1_max != 0)) {
+				dib8000_write_word(state, 108, state->agc1_max);
+				dib8000_write_word(state, 109, state->agc1_min);
+				dib8000_write_word(state, 110, state->agc2_max);
+				dib8000_write_word(state, 111, state->agc2_min);
+				state->agc1_max = 0;
+				state->agc1_min = 0;
+				state->agc2_max = 0;
+				state->agc2_min = 0;
+			}
+#endif
+			ret = FE_CALLBACK_TIME_NEVER;
+			break;
+	default:
+			break;
 	}
 
+	if ((ret > 0) && (*tune_state > CT_DEMOD_STEP_3))
+		return ret * state->symbol_duration;
+	if ((ret > 0) && (ret < state->symbol_duration))
+		return state->symbol_duration; /* at least one symbol */
 	return ret;
 }
 
@@ -2767,7 +3208,7 @@ static int dib8000_wakeup(struct dvb_frontend *fe)
 	if (dib8000_set_adc_state(state, DIBX000_SLOW_ADC_ON) != 0)
 		dprintk("could not start Slow ADC");
 
-	if (state->revision != 0x8090)
+	if (state->revision == 0x8090)
 		dib8000_sad_calib(state);
 
 	for (index_frontend = 1; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++) {
@@ -2797,21 +3238,6 @@ static int dib8000_sleep(struct dvb_frontend *fe)
 	return dib8000_set_adc_state(state, DIBX000_SLOW_ADC_OFF) | dib8000_set_adc_state(state, DIBX000_ADC_OFF);
 }
 
-enum frontend_tune_state dib8000_get_tune_state(struct dvb_frontend *fe)
-{
-	struct dib8000_state *state = fe->demodulator_priv;
-	return state->tune_state;
-}
-EXPORT_SYMBOL(dib8000_get_tune_state);
-
-int dib8000_set_tune_state(struct dvb_frontend *fe, enum frontend_tune_state tune_state)
-{
-	struct dib8000_state *state = fe->demodulator_priv;
-	state->tune_state = tune_state;
-	return 0;
-}
-EXPORT_SYMBOL(dib8000_set_tune_state);
-
 static int dib8000_get_frontend(struct dvb_frontend *fe)
 {
 	struct dib8000_state *state = fe->demodulator_priv;
@@ -2961,10 +3387,9 @@ static int dib8000_get_frontend(struct dvb_frontend *fe)
 static int dib8000_set_frontend(struct dvb_frontend *fe)
 {
 	struct dib8000_state *state = fe->demodulator_priv;
-	u8 nbr_pending, exit_condition, index_frontend;
-	s8 index_frontend_success = -1;
-	int time, ret;
-	int  time_slave = FE_CALLBACK_TIME_NEVER;
+	int l, i, active, time, ret, time_slave = FE_CALLBACK_TIME_NEVER;
+	u8 exit_condition, index_frontend;
+	u32 delay, callback_time;
 
 	if (state->fe[0]->dtv_property_cache.frequency == 0) {
 		dprintk("dib8000: must at least specify frequency ");
@@ -2981,18 +3406,36 @@ static int dib8000_set_frontend(struct dvb_frontend *fe)
 		state->fe[index_frontend]->dtv_property_cache.delivery_system = SYS_ISDBT;
 		memcpy(&state->fe[index_frontend]->dtv_property_cache, &fe->dtv_property_cache, sizeof(struct dtv_frontend_properties));
 
-		if (state->revision != 0x8090)
-			dib8000_set_output_mode(state->fe[index_frontend],
-					OUTMODE_HIGH_Z);
-		else
-			dib8096p_set_output_mode(state->fe[index_frontend],
-					OUTMODE_HIGH_Z);
+		/* set output mode and diversity input */
+		if (state->revision != 0x8090) {
+			dib8000_set_diversity_in(state->fe[index_frontend], 1);
+			if (index_frontend != 0)
+				dib8000_set_output_mode(state->fe[index_frontend],
+						OUTMODE_DIVERSITY);
+			else
+				dib8000_set_output_mode(state->fe[0], OUTMODE_HIGH_Z);
+		} else {
+			dib8096p_set_diversity_in(state->fe[index_frontend], 1);
+			if (index_frontend != 0)
+				dib8096p_set_output_mode(state->fe[index_frontend],
+						OUTMODE_DIVERSITY);
+			else
+				dib8096p_set_output_mode(state->fe[0], OUTMODE_HIGH_Z);
+		}
+
+		/* tune the tuner */
 		if (state->fe[index_frontend]->ops.tuner_ops.set_params)
 			state->fe[index_frontend]->ops.tuner_ops.set_params(state->fe[index_frontend]);
 
 		dib8000_set_tune_state(state->fe[index_frontend], CT_AGC_START);
 	}
 
+	/* turn off the diversity of the last chip */
+	if (state->revision != 0x8090)
+		dib8000_set_diversity_in(state->fe[index_frontend - 1], 0);
+	else
+		dib8096p_set_diversity_in(state->fe[index_frontend - 1], 0);
+
 	/* start up the AGC */
 	do {
 		time = dib8000_agc_startup(state->fe[0]);
@@ -3019,139 +3462,88 @@ static int dib8000_set_frontend(struct dvb_frontend *fe)
 	for (index_frontend = 0; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++)
 		dib8000_set_tune_state(state->fe[index_frontend], CT_DEMOD_START);
 
-	if ((state->fe[0]->dtv_property_cache.delivery_system != SYS_ISDBT) ||
-			(state->fe[0]->dtv_property_cache.inversion == INVERSION_AUTO) ||
-			(state->fe[0]->dtv_property_cache.transmission_mode == TRANSMISSION_MODE_AUTO) ||
-			(state->fe[0]->dtv_property_cache.guard_interval == GUARD_INTERVAL_AUTO) ||
-			(((state->fe[0]->dtv_property_cache.isdbt_layer_enabled & (1 << 0)) != 0) &&
-			 (state->fe[0]->dtv_property_cache.layer[0].segment_count != 0xff) &&
-			 (state->fe[0]->dtv_property_cache.layer[0].segment_count != 0) &&
-			 ((state->fe[0]->dtv_property_cache.layer[0].modulation == QAM_AUTO) ||
-			  (state->fe[0]->dtv_property_cache.layer[0].fec == FEC_AUTO))) ||
-			(((state->fe[0]->dtv_property_cache.isdbt_layer_enabled & (1 << 1)) != 0) &&
-			 (state->fe[0]->dtv_property_cache.layer[1].segment_count != 0xff) &&
-			 (state->fe[0]->dtv_property_cache.layer[1].segment_count != 0) &&
-			 ((state->fe[0]->dtv_property_cache.layer[1].modulation == QAM_AUTO) ||
-			  (state->fe[0]->dtv_property_cache.layer[1].fec == FEC_AUTO))) ||
-			(((state->fe[0]->dtv_property_cache.isdbt_layer_enabled & (1 << 2)) != 0) &&
-			 (state->fe[0]->dtv_property_cache.layer[2].segment_count != 0xff) &&
-			 (state->fe[0]->dtv_property_cache.layer[2].segment_count != 0) &&
-			 ((state->fe[0]->dtv_property_cache.layer[2].modulation == QAM_AUTO) ||
-			  (state->fe[0]->dtv_property_cache.layer[2].fec == FEC_AUTO))) ||
-			(((state->fe[0]->dtv_property_cache.layer[0].segment_count == 0) ||
-			  ((state->fe[0]->dtv_property_cache.isdbt_layer_enabled & (1 << 0)) == 0)) &&
-			 ((state->fe[0]->dtv_property_cache.layer[1].segment_count == 0) ||
-			  ((state->fe[0]->dtv_property_cache.isdbt_layer_enabled & (2 << 0)) == 0)) &&
-			 ((state->fe[0]->dtv_property_cache.layer[2].segment_count == 0) || ((state->fe[0]->dtv_property_cache.isdbt_layer_enabled & (3 << 0)) == 0)))) {
-		int i = 100;
-		u8 found = 0;
-		u8 tune_failed = 0;
-
+	active = 1;
+	do {
+		callback_time = FE_CALLBACK_TIME_NEVER;
 		for (index_frontend = 0; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++) {
-			dib8000_set_bandwidth(state->fe[index_frontend], fe->dtv_property_cache.bandwidth_hz / 1000);
-			dib8000_autosearch_start(state->fe[index_frontend]);
-		}
-
-		do {
-			msleep(20);
-			nbr_pending = 0;
-			exit_condition = 0; /* 0: tune pending; 1: tune failed; 2:tune success */
-			for (index_frontend = 0; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++) {
-				if (((tune_failed >> index_frontend) & 0x1) == 0) {
-					found = dib8000_autosearch_irq(state->fe[index_frontend]);
-					switch (found) {
-					case 0: /* tune pending */
-						 nbr_pending++;
-						 break;
-					case 2:
-						 dprintk("autosearch succeed on the frontend%i", index_frontend);
-						 exit_condition = 2;
-						 index_frontend_success = index_frontend;
-						 break;
-					default:
-						 dprintk("unhandled autosearch result");
-					case 1:
-						 tune_failed |= (1 << index_frontend);
-						 dprintk("autosearch failed for the frontend%i", index_frontend);
-						 break;
+			delay = dib8000_tune(state->fe[index_frontend]);
+			if (delay != FE_CALLBACK_TIME_NEVER)
+				delay += systime();
+
+			/* we are in autosearch */
+			if (state->channel_parameters_set == 0) { /* searching */
+				if ((dib8000_get_status(state->fe[index_frontend]) == FE_STATUS_DEMOD_SUCCESS) || (dib8000_get_status(state->fe[index_frontend]) == FE_STATUS_FFT_SUCCESS)) {
+					dprintk("autosearch succeeded on fe%i", index_frontend);
+					dib8000_get_frontend(state->fe[index_frontend]); /* we read the channel parameters from the frontend which was successful */
+					state->channel_parameters_set = 1;
+
+					for (l = 0; (l < MAX_NUMBER_OF_FRONTENDS) && (state->fe[l] != NULL); l++) {
+						if (l != index_frontend) { /* and for all frontend except the successful one */
+							dib8000_tune_restart_from_demod(state->fe[l]);
+
+							state->fe[l]->dtv_property_cache.isdbt_sb_mode = state->fe[index_frontend]->dtv_property_cache.isdbt_sb_mode;
+							state->fe[l]->dtv_property_cache.inversion = state->fe[index_frontend]->dtv_property_cache.inversion;
+							state->fe[l]->dtv_property_cache.transmission_mode = state->fe[index_frontend]->dtv_property_cache.transmission_mode;
+							state->fe[l]->dtv_property_cache.guard_interval = state->fe[index_frontend]->dtv_property_cache.guard_interval;
+							state->fe[l]->dtv_property_cache.isdbt_partial_reception = state->fe[index_frontend]->dtv_property_cache.isdbt_partial_reception;
+							for (i = 0; i < 3; i++) {
+								state->fe[l]->dtv_property_cache.layer[i].segment_count = state->fe[index_frontend]->dtv_property_cache.layer[i].segment_count;
+								state->fe[l]->dtv_property_cache.layer[i].interleaving = state->fe[index_frontend]->dtv_property_cache.layer[i].interleaving;
+								state->fe[l]->dtv_property_cache.layer[i].fec = state->fe[index_frontend]->dtv_property_cache.layer[i].fec;
+								state->fe[l]->dtv_property_cache.layer[i].modulation = state->fe[index_frontend]->dtv_property_cache.layer[i].modulation;
+							}
+
+						}
 					}
 				}
 			}
-
-			/* if all tune are done and no success, exit: tune failed */
-			if ((nbr_pending == 0) && (exit_condition == 0))
-				exit_condition = 1;
-		} while ((exit_condition == 0) && i--);
-
-		if (exit_condition == 1) { /* tune failed */
-			dprintk("tune failed");
-			return 0;
+			if (delay < callback_time)
+				callback_time = delay;
+		}
+		/* tuning is done when the master frontend is done (failed or success) */
+		if (dib8000_get_status(state->fe[0]) == FE_STATUS_TUNE_FAILED ||
+				dib8000_get_status(state->fe[0]) == FE_STATUS_LOCKED ||
+				dib8000_get_status(state->fe[0]) == FE_STATUS_DATA_LOCKED) {
+			active = 0;
+			/* we need to wait for all frontends to be finished */
+			for (index_frontend = 0; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++) {
+				if (dib8000_get_tune_state(state->fe[index_frontend]) != CT_DEMOD_STOP)
+					active = 1;
+			}
+			if (active == 0)
+				dprintk("tuning done with status %d", dib8000_get_status(state->fe[0]));
 		}
 
-		dprintk("tune success on frontend%i", index_frontend_success);
-
-		dib8000_get_frontend(fe);
-	}
+		if ((active == 1) && (callback_time == FE_CALLBACK_TIME_NEVER)) {
+			dprintk("strange callback time something went wrong");
+			active = 0;
+		}
 
-	for (index_frontend = 0, ret = 0; (ret >= 0) && (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++)
-		ret = dib8000_tune(state->fe[index_frontend]);
+		while ((active == 1) && (systime() < callback_time))
+			msleep(100);
+	} while (active);
 
-	/* set output mode and diversity input */
-	if (state->revision != 0x8090) {
+	/* set output mode */
+	if (state->revision != 0x8090)
 		dib8000_set_output_mode(state->fe[0], state->cfg.output_mode);
-		for (index_frontend = 1;
-				(index_frontend < MAX_NUMBER_OF_FRONTENDS) &&
-				(state->fe[index_frontend] != NULL);
-				index_frontend++) {
-			dib8000_set_output_mode(state->fe[index_frontend],
-					OUTMODE_DIVERSITY);
-			dib8000_set_diversity_in(state->fe[index_frontend-1], 1);
-		}
-
-		/* turn off the diversity of the last chip */
-		dib8000_set_diversity_in(state->fe[index_frontend-1], 0);
-	} else {
+	else {
 		dib8096p_set_output_mode(state->fe[0], state->cfg.output_mode);
 		if (state->cfg.enMpegOutput == 0) {
 			dib8096p_setDibTxMux(state, MPEG_ON_DIBTX);
 			dib8096p_setHostBusMux(state, DIBTX_ON_HOSTBUS);
 		}
-		for (index_frontend = 1;
-				(index_frontend < MAX_NUMBER_OF_FRONTENDS) &&
-				(state->fe[index_frontend] != NULL);
-				index_frontend++) {
-			dib8096p_set_output_mode(state->fe[index_frontend],
-					OUTMODE_DIVERSITY);
-			dib8096p_set_diversity_in(state->fe[index_frontend-1], 1);
-		}
-
-		/* turn off the diversity of the last chip */
-		dib8096p_set_diversity_in(state->fe[index_frontend-1], 0);
 	}
 
 	return ret;
 }
 
-static u16 dib8000_read_lock(struct dvb_frontend *fe)
-{
-	struct dib8000_state *state = fe->demodulator_priv;
-
-	if (state->revision == 0x8090)
-		return dib8000_read_word(state, 570);
-	return dib8000_read_word(state, 568);
-}
-
 static int dib8000_read_status(struct dvb_frontend *fe, fe_status_t * stat)
 {
 	struct dib8000_state *state = fe->demodulator_priv;
 	u16 lock_slave = 0, lock;
 	u8 index_frontend;
 
-	if (state->revision == 0x8090)
-		lock = dib8000_read_word(state, 570);
-	else
-		lock = dib8000_read_word(state, 568);
-
+	lock = dib8000_read_lock(fe);
 	for (index_frontend = 1; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++)
 		lock_slave |= dib8000_read_lock(state->fe[index_frontend]);
 
@@ -3545,10 +3937,11 @@ struct dvb_frontend *dib8000_attach(struct i2c_adapter *i2c_adap, u8 i2c_addr, s
 	dib8000_reset(fe);
 
 	dib8000_write_word(state, 285, (dib8000_read_word(state, 285) & ~0x60) | (3 << 5));	/* ber_rs_len = 3 */
+	state->current_demod_bw = 6000;
 
 	return fe;
 
- error:
+error:
 	kfree(state);
 	return NULL;
 }
diff --git a/drivers/media/dvb-frontends/dib8000.h b/drivers/media/dvb-frontends/dib8000.h
index 9e7a2b170d5..b8c11e52c51 100644
--- a/drivers/media/dvb-frontends/dib8000.h
+++ b/drivers/media/dvb-frontends/dib8000.h
@@ -33,6 +33,8 @@ struct dib8000_config {
 	u8 output_mode;
 	u8 refclksel;
 	u8 enMpegOutput:1;
+
+	struct dibx000_bandwidth_config *plltable;
 };
 
 #define DEFAULT_DIB8000_I2C_ADDRESS 18
@@ -58,7 +60,7 @@ extern int dib8090p_get_dc_power(struct dvb_frontend *fe, u8 IQ);
 extern u32 dib8000_ctrl_timf(struct dvb_frontend *fe,
 		uint8_t op, uint32_t timf);
 extern int dib8000_update_pll(struct dvb_frontend *fe,
-		struct dibx000_bandwidth_config *pll);
+		struct dibx000_bandwidth_config *pll, u32 bw, u8 ratio);
 extern int dib8000_set_slave_frontend(struct dvb_frontend *fe, struct dvb_frontend *fe_slave);
 extern int dib8000_remove_slave_frontend(struct dvb_frontend *fe);
 extern struct dvb_frontend *dib8000_get_slave_frontend(struct dvb_frontend *fe, int slave_index);
@@ -147,7 +149,7 @@ static inline u32 dib8000_ctrl_timf(struct dvb_frontend *fe,
 	return 0;
 }
 static inline int dib8000_update_pll(struct dvb_frontend *fe,
-		struct dibx000_bandwidth_config *pll)
+		struct dibx000_bandwidth_config *pll, u32 bw, u8 ratio)
 {
 	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
 	return -ENODEV;
diff --git a/drivers/media/dvb-frontends/dibx000_common.h b/drivers/media/dvb-frontends/dibx000_common.h
index 5f484881d7b..b538e0555c9 100644
--- a/drivers/media/dvb-frontends/dibx000_common.h
+++ b/drivers/media/dvb-frontends/dibx000_common.h
@@ -193,7 +193,8 @@ enum frontend_tune_state {
 	CT_DEMOD_STEP_8,
 	CT_DEMOD_STEP_9,
 	CT_DEMOD_STEP_10,
-	CT_DEMOD_SEARCH_NEXT = 41,
+	CT_DEMOD_STEP_11,
+	CT_DEMOD_SEARCH_NEXT = 51,
 	CT_DEMOD_STEP_LOCKED,
 	CT_DEMOD_STOP,