diff options
Diffstat (limited to 'drivers/media/dvb/frontends/stb0899_algo.c')
| -rw-r--r-- | drivers/media/dvb/frontends/stb0899_algo.c | 1525 |
1 files changed, 0 insertions, 1525 deletions
diff --git a/drivers/media/dvb/frontends/stb0899_algo.c b/drivers/media/dvb/frontends/stb0899_algo.c deleted file mode 100644 index 117a569..0000000 --- a/drivers/media/dvb/frontends/stb0899_algo.c +++ /dev/null @@ -1,1525 +0,0 @@ -/* - STB0899 Multistandard Frontend driver - Copyright (C) Manu Abraham (abraham.manu@gmail.com) - - Copyright (C) ST Microelectronics - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ - -#include "stb0899_drv.h" -#include "stb0899_priv.h" -#include "stb0899_reg.h" - -static inline u32 stb0899_do_div(u64 n, u32 d) -{ - /* wrap do_div() for ease of use */ - - do_div(n, d); - return n; -} - -#if 0 -/* These functions are currently unused */ -/* - * stb0899_calc_srate - * Compute symbol rate - */ -static u32 stb0899_calc_srate(u32 master_clk, u8 *sfr) -{ - u64 tmp; - - /* srate = (SFR * master_clk) >> 20 */ - - /* sfr is of size 20 bit, stored with an offset of 4 bit */ - tmp = (((u32)sfr[0]) << 16) | (((u32)sfr[1]) << 8) | sfr[2]; - tmp &= ~0xf; - tmp *= master_clk; - tmp >>= 24; - - return tmp; -} - -/* - * stb0899_get_srate - * Get the current symbol rate - */ -static u32 stb0899_get_srate(struct stb0899_state *state) -{ - struct stb0899_internal *internal = &state->internal; - u8 sfr[3]; - - stb0899_read_regs(state, STB0899_SFRH, sfr, 3); - - return stb0899_calc_srate(internal->master_clk, sfr); -} -#endif - -/* - * stb0899_set_srate - * Set symbol frequency - * MasterClock: master clock frequency (hz) - * SymbolRate: symbol rate (bauds) - * return symbol frequency - */ -static u32 stb0899_set_srate(struct stb0899_state *state, u32 master_clk, u32 srate) -{ - u32 tmp; - u8 sfr[3]; - - dprintk(state->verbose, FE_DEBUG, 1, "-->"); - /* - * in order to have the maximum precision, the symbol rate entered into - * the chip is computed as the closest value of the "true value". - * In this purpose, the symbol rate value is rounded (1 is added on the bit - * below the LSB ) - * - * srate = (SFR * master_clk) >> 20 - * <=> - * SFR = srate << 20 / master_clk - * - * rounded: - * SFR = (srate << 21 + master_clk) / (2 * master_clk) - * - * stored as 20 bit number with an offset of 4 bit: - * sfr = SFR << 4; - */ - - tmp = stb0899_do_div((((u64)srate) << 21) + master_clk, 2 * master_clk); - tmp <<= 4; - - sfr[0] = tmp >> 16; - sfr[1] = tmp >> 8; - sfr[2] = tmp; - - stb0899_write_regs(state, STB0899_SFRH, sfr, 3); - - return srate; -} - -/* - * stb0899_calc_derot_time - * Compute the amount of time needed by the derotator to lock - * SymbolRate: Symbol rate - * return: derotator time constant (ms) - */ -static long stb0899_calc_derot_time(long srate) -{ - if (srate > 0) - return (100000 / (srate / 1000)); - else - return 0; -} - -/* - * stb0899_carr_width - * Compute the width of the carrier - * return: width of carrier (kHz or Mhz) - */ -long stb0899_carr_width(struct stb0899_state *state) -{ - struct stb0899_internal *internal = &state->internal; - - return (internal->srate + (internal->srate * internal->rolloff) / 100); -} - -/* - * stb0899_first_subrange - * Compute the first subrange of the search - */ -static void stb0899_first_subrange(struct stb0899_state *state) -{ - struct stb0899_internal *internal = &state->internal; - struct stb0899_params *params = &state->params; - struct stb0899_config *config = state->config; - - int range = 0; - u32 bandwidth = 0; - - if (config->tuner_get_bandwidth) { - stb0899_i2c_gate_ctrl(&state->frontend, 1); - config->tuner_get_bandwidth(&state->frontend, &bandwidth); - stb0899_i2c_gate_ctrl(&state->frontend, 0); - range = bandwidth - stb0899_carr_width(state) / 2; - } - - if (range > 0) - internal->sub_range = min(internal->srch_range, range); - else - internal->sub_range = 0; - - internal->freq = params->freq; - internal->tuner_offst = 0L; - internal->sub_dir = 1; -} - -/* - * stb0899_check_tmg - * check for timing lock - * internal.Ttiming: time to wait for loop lock - */ -static enum stb0899_status stb0899_check_tmg(struct stb0899_state *state) -{ - struct stb0899_internal *internal = &state->internal; - int lock; - u8 reg; - s8 timing; - - msleep(internal->t_derot); - - stb0899_write_reg(state, STB0899_RTF, 0xf2); - reg = stb0899_read_reg(state, STB0899_TLIR); - lock = STB0899_GETFIELD(TLIR_TMG_LOCK_IND, reg); - timing = stb0899_read_reg(state, STB0899_RTF); - - if (lock >= 42) { - if ((lock > 48) && (abs(timing) >= 110)) { - internal->status = ANALOGCARRIER; - dprintk(state->verbose, FE_DEBUG, 1, "-->ANALOG Carrier !"); - } else { - internal->status = TIMINGOK; - dprintk(state->verbose, FE_DEBUG, 1, "------->TIMING OK !"); - } - } else { - internal->status = NOTIMING; - dprintk(state->verbose, FE_DEBUG, 1, "-->NO TIMING !"); - } - return internal->status; -} - -/* - * stb0899_search_tmg - * perform a fs/2 zig-zag to find timing - */ -static enum stb0899_status stb0899_search_tmg(struct stb0899_state *state) -{ - struct stb0899_internal *internal = &state->internal; - struct stb0899_params *params = &state->params; - - short int derot_step, derot_freq = 0, derot_limit, next_loop = 3; - int index = 0; - u8 cfr[2]; - - internal->status = NOTIMING; - - /* timing loop computation & symbol rate optimisation */ - derot_limit = (internal->sub_range / 2L) / internal->mclk; - derot_step = (params->srate / 2L) / internal->mclk; - - while ((stb0899_check_tmg(state) != TIMINGOK) && next_loop) { - index++; - derot_freq += index * internal->direction * derot_step; /* next derot zig zag position */ - - if (abs(derot_freq) > derot_limit) - next_loop--; - - if (next_loop) { - STB0899_SETFIELD_VAL(CFRM, cfr[0], MSB(state->config->inversion * derot_freq)); - STB0899_SETFIELD_VAL(CFRL, cfr[1], LSB(state->config->inversion * derot_freq)); - stb0899_write_regs(state, STB0899_CFRM, cfr, 2); /* derotator frequency */ - } - internal->direction = -internal->direction; /* Change zigzag direction */ - } - - if (internal->status == TIMINGOK) { - stb0899_read_regs(state, STB0899_CFRM, cfr, 2); /* get derotator frequency */ - internal->derot_freq = state->config->inversion * MAKEWORD16(cfr[0], cfr[1]); - dprintk(state->verbose, FE_DEBUG, 1, "------->TIMING OK ! Derot Freq = %d", internal->derot_freq); - } - - return internal->status; -} - -/* - * stb0899_check_carrier - * Check for carrier found - */ -static enum stb0899_status stb0899_check_carrier(struct stb0899_state *state) -{ - struct stb0899_internal *internal = &state->internal; - u8 reg; - - msleep(internal->t_derot); /* wait for derotator ok */ - - reg = stb0899_read_reg(state, STB0899_CFD); - STB0899_SETFIELD_VAL(CFD_ON, reg, 1); - stb0899_write_reg(state, STB0899_CFD, reg); - - reg = stb0899_read_reg(state, STB0899_DSTATUS); - dprintk(state->verbose, FE_DEBUG, 1, "--------------------> STB0899_DSTATUS=[0x%02x]", reg); - if (STB0899_GETFIELD(CARRIER_FOUND, reg)) { - internal->status = CARRIEROK; - dprintk(state->verbose, FE_DEBUG, 1, "-------------> CARRIEROK !"); - } else { - internal->status = NOCARRIER; - dprintk(state->verbose, FE_DEBUG, 1, "-------------> NOCARRIER !"); - } - - return internal->status; -} - -/* - * stb0899_search_carrier - * Search for a QPSK carrier with the derotator - */ -static enum stb0899_status stb0899_search_carrier(struct stb0899_state *state) -{ - struct stb0899_internal *internal = &state->internal; - - short int derot_freq = 0, last_derot_freq = 0, derot_limit, next_loop = 3; - int index = 0; - u8 cfr[2]; - u8 reg; - - internal->status = NOCARRIER; - derot_limit = (internal->sub_range / 2L) / internal->mclk; - derot_freq = internal->derot_freq; - - reg = stb0899_read_reg(state, STB0899_CFD); - STB0899_SETFIELD_VAL(CFD_ON, reg, 1); - stb0899_write_reg(state, STB0899_CFD, reg); - - do { - dprintk(state->verbose, FE_DEBUG, 1, "Derot Freq=%d, mclk=%d", derot_freq, internal->mclk); - if (stb0899_check_carrier(state) == NOCARRIER) { - index++; - last_derot_freq = derot_freq; - derot_freq += index * internal->direction * internal->derot_step; /* next zig zag derotator position */ - - if(abs(derot_freq) > derot_limit) - next_loop--; - - if (next_loop) { - reg = stb0899_read_reg(state, STB0899_CFD); - STB0899_SETFIELD_VAL(CFD_ON, reg, 1); - stb0899_write_reg(state, STB0899_CFD, reg); - - STB0899_SETFIELD_VAL(CFRM, cfr[0], MSB(state->config->inversion * derot_freq)); - STB0899_SETFIELD_VAL(CFRL, cfr[1], LSB(state->config->inversion * derot_freq)); - stb0899_write_regs(state, STB0899_CFRM, cfr, 2); /* derotator frequency */ - } - } - - internal->direction = -internal->direction; /* Change zigzag direction */ - } while ((internal->status != CARRIEROK) && next_loop); - - if (internal->status == CARRIEROK) { - stb0899_read_regs(state, STB0899_CFRM, cfr, 2); /* get derotator frequency */ - internal->derot_freq = state->config->inversion * MAKEWORD16(cfr[0], cfr[1]); - dprintk(state->verbose, FE_DEBUG, 1, "----> CARRIER OK !, Derot Freq=%d", internal->derot_freq); - } else { - internal->derot_freq = last_derot_freq; - } - - return internal->status; -} - -/* - * stb0899_check_data - * Check for data found - */ -static enum stb0899_status stb0899_check_data(struct stb0899_state *state) -{ - struct stb0899_internal *internal = &state->internal; - struct stb0899_params *params = &state->params; - - int lock = 0, index = 0, dataTime = 500, loop; - u8 reg; - - internal->status = NODATA; - - /* RESET FEC */ - reg = stb0899_read_reg(state, STB0899_TSTRES); - STB0899_SETFIELD_VAL(FRESACS, reg, 1); - stb0899_write_reg(state, STB0899_TSTRES, reg); - msleep(1); - reg = stb0899_read_reg(state, STB0899_TSTRES); - STB0899_SETFIELD_VAL(FRESACS, reg, 0); - stb0899_write_reg(state, STB0899_TSTRES, reg); - - if (params->srate <= 2000000) - dataTime = 2000; - else if (params->srate <= 5000000) - dataTime = 1500; - else if (params->srate <= 15000000) - dataTime = 1000; - else - dataTime = 500; - - /* clear previous failed END_LOOPVIT */ - stb0899_read_reg(state, STB0899_VSTATUS); - - stb0899_write_reg(state, STB0899_DSTATUS2, 0x00); /* force search loop */ - while (1) { - /* WARNING! VIT LOCKED has to be tested before VIT_END_LOOOP */ - reg = stb0899_read_reg(state, STB0899_VSTATUS); - lock = STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg); - loop = STB0899_GETFIELD(VSTATUS_END_LOOPVIT, reg); - - if (lock || loop || (index > dataTime)) - break; - index++; - } - - if (lock) { /* DATA LOCK indicator */ - internal->status = DATAOK; - dprintk(state->verbose, FE_DEBUG, 1, "-----------------> DATA OK !"); - } - - return internal->status; -} - -/* - * stb0899_search_data - * Search for a QPSK carrier with the derotator - */ -static enum stb0899_status stb0899_search_data(struct stb0899_state *state) -{ - short int derot_freq, derot_step, derot_limit, next_loop = 3; - u8 cfr[2]; - u8 reg; - int index = 1; - - struct stb0899_internal *internal = &state->internal; - struct stb0899_params *params = &state->params; - - derot_step = (params->srate / 4L) / internal->mclk; - derot_limit = (internal->sub_range / 2L) / internal->mclk; - derot_freq = internal->derot_freq; - - do { - if ((internal->status != CARRIEROK) || (stb0899_check_data(state) != DATAOK)) { - - derot_freq += index * internal->direction * derot_step; /* next zig zag derotator position */ - if (abs(derot_freq) > derot_limit) - next_loop--; - - if (next_loop) { - dprintk(state->verbose, FE_DEBUG, 1, "Derot freq=%d, mclk=%d", derot_freq, internal->mclk); - reg = stb0899_read_reg(state, STB0899_CFD); - STB0899_SETFIELD_VAL(CFD_ON, reg, 1); - stb0899_write_reg(state, STB0899_CFD, reg); - - STB0899_SETFIELD_VAL(CFRM, cfr[0], MSB(state->config->inversion * derot_freq)); - STB0899_SETFIELD_VAL(CFRL, cfr[1], LSB(state->config->inversion * derot_freq)); - stb0899_write_regs(state, STB0899_CFRM, cfr, 2); /* derotator frequency */ - - stb0899_check_carrier(state); - index++; - } - } - internal->direction = -internal->direction; /* change zig zag direction */ - } while ((internal->status != DATAOK) && next_loop); - - if (internal->status == DATAOK) { - stb0899_read_regs(state, STB0899_CFRM, cfr, 2); /* get derotator frequency */ - internal->derot_freq = state->config->inversion * MAKEWORD16(cfr[0], cfr[1]); - dprintk(state->verbose, FE_DEBUG, 1, "------> DATAOK ! Derot Freq=%d", internal->derot_freq); - } - - return internal->status; -} - -/* - * stb0899_check_range - * check if the found frequency is in the correct range - */ -static enum stb0899_status stb0899_check_range(struct stb0899_state *state) -{ - struct stb0899_internal *internal = &state->internal; - struct stb0899_params *params = &state->params; - - int range_offst, tp_freq; - - range_offst = internal->srch_range / 2000; - tp_freq = internal->freq + (internal->derot_freq * internal->mclk) / 1000; - - if ((tp_freq >= params->freq - range_offst) && (tp_freq <= params->freq + range_offst)) { - internal->status = RANGEOK; - dprintk(state->verbose, FE_DEBUG, 1, "----> RANGEOK !"); - } else { - internal->status = OUTOFRANGE; - dprintk(state->verbose, FE_DEBUG, 1, "----> OUT OF RANGE !"); - } - - return internal->status; -} - -/* - * NextSubRange - * Compute the next subrange of the search - */ -static void next_sub_range(struct stb0899_state *state) -{ - struct stb0899_internal *internal = &state->internal; - struct stb0899_params *params = &state->params; - - long old_sub_range; - - if (internal->sub_dir > 0) { - old_sub_range = internal->sub_range; - internal->sub_range = min((internal->srch_range / 2) - - (internal->tuner_offst + internal->sub_range / 2), - internal->sub_range); - - if (internal->sub_range < 0) - internal->sub_range = 0; - - internal->tuner_offst += (old_sub_range + internal->sub_range) / 2; - } - - internal->freq = params->freq + (internal->sub_dir * internal->tuner_offst) / 1000; - internal->sub_dir = -internal->sub_dir; -} - -/* - * stb0899_dvbs_algo - * Search for a signal, timing, carrier and data for a - * given frequency in a given range - */ -enum stb0899_status stb0899_dvbs_algo(struct stb0899_state *state) -{ - struct stb0899_params *params = &state->params; - struct stb0899_internal *internal = &state->internal; - struct stb0899_config *config = state->config; - - u8 bclc, reg; - u8 cfr[2]; - u8 eq_const[10]; - s32 clnI = 3; - u32 bandwidth = 0; - - /* BETA values rated @ 99MHz */ - s32 betaTab[5][4] = { - /* 5 10 20 30MBps */ - { 37, 34, 32, 31 }, /* QPSK 1/2 */ - { 37, 35, 33, 31 }, /* QPSK 2/3 */ - { 37, 35, 33, 31 }, /* QPSK 3/4 */ - { 37, 36, 33, 32 }, /* QPSK 5/6 */ - { 37, 36, 33, 32 } /* QPSK 7/8 */ - }; - - internal->direction = 1; - - stb0899_set_srate(state, internal->master_clk, params->srate); - /* Carrier loop optimization versus symbol rate for acquisition*/ - if (params->srate <= 5000000) { - stb0899_write_reg(state, STB0899_ACLC, 0x89); - bclc = stb0899_read_reg(state, STB0899_BCLC); - STB0899_SETFIELD_VAL(BETA, bclc, 0x1c); - stb0899_write_reg(state, STB0899_BCLC, bclc); - clnI = 0; - } else if (params->srate <= 15000000) { - stb0899_write_reg(state, STB0899_ACLC, 0xc9); - bclc = stb0899_read_reg(state, STB0899_BCLC); - STB0899_SETFIELD_VAL(BETA, bclc, 0x22); - stb0899_write_reg(state, STB0899_BCLC, bclc); - clnI = 1; - } else if(params->srate <= 25000000) { - stb0899_write_reg(state, STB0899_ACLC, 0x89); - bclc = stb0899_read_reg(state, STB0899_BCLC); - STB0899_SETFIELD_VAL(BETA, bclc, 0x27); - stb0899_write_reg(state, STB0899_BCLC, bclc); - clnI = 2; - } else { - stb0899_write_reg(state, STB0899_ACLC, 0xc8); - bclc = stb0899_read_reg(state, STB0899_BCLC); - STB0899_SETFIELD_VAL(BETA, bclc, 0x29); - stb0899_write_reg(state, STB0899_BCLC, bclc); - clnI = 3; - } - - dprintk(state->verbose, FE_DEBUG, 1, "Set the timing loop to acquisition"); - /* Set the timing loop to acquisition */ - stb0899_write_reg(state, STB0899_RTC, 0x46); - stb0899_write_reg(state, STB0899_CFD, 0xee); - - /* !! WARNING !! - * Do not read any status variables while acquisition, - * If any needed, read before the acquisition starts - * querying status while acquiring causes the - * acquisition to go bad and hence no locks. - */ - dprintk(state->verbose, FE_DEBUG, 1, "Derot Percent=%d Srate=%d mclk=%d", - internal->derot_percent, params->srate, internal->mclk); - - /* Initial calculations */ - internal->derot_step = internal->derot_percent * (params->srate / 1000L) / internal->mclk; /* DerotStep/1000 * Fsymbol */ - internal->t_derot = stb0899_calc_derot_time(params->srate); - internal->t_data = 500; - - dprintk(state->verbose, FE_DEBUG, 1, "RESET stream merger"); - /* RESET Stream merger */ - reg = stb0899_read_reg(state, STB0899_TSTRES); - STB0899_SETFIELD_VAL(FRESRS, reg, 1); - stb0899_write_reg(state, STB0899_TSTRES, reg); - - /* - * Set KDIVIDER to an intermediate value between - * 1/2 and 7/8 for acquisition - */ - reg = stb0899_read_reg(state, STB0899_DEMAPVIT); - STB0899_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 60); - stb0899_write_reg(state, STB0899_DEMAPVIT, reg); - - stb0899_write_reg(state, STB0899_EQON, 0x01); /* Equalizer OFF while acquiring */ - stb0899_write_reg(state, STB0899_VITSYNC, 0x19); - - stb0899_first_subrange(state); - do { - /* Initialisations */ - cfr[0] = cfr[1] = 0; - stb0899_write_regs(state, STB0899_CFRM, cfr, 2); /* RESET derotator frequency */ - - stb0899_write_reg(state, STB0899_RTF, 0); - reg = stb0899_read_reg(state, STB0899_CFD); - STB0899_SETFIELD_VAL(CFD_ON, reg, 1); - stb0899_write_reg(state, STB0899_CFD, reg); - - internal->derot_freq = 0; - internal->status = NOAGC1; - - /* enable tuner I/O */ - stb0899_i2c_gate_ctrl(&state->frontend, 1); - - /* Move tuner to frequency */ - dprintk(state->verbose, FE_DEBUG, 1, "Tuner set frequency"); - if (state->config->tuner_set_frequency) - state->config->tuner_set_frequency(&state->frontend, internal->freq); - - if (state->config->tuner_get_frequency) - state->config->tuner_get_frequency(&state->frontend, &internal->freq); - - msleep(internal->t_agc1 + internal->t_agc2 + internal->t_derot); /* AGC1, AGC2 and timing loop */ - dprintk(state->verbose, FE_DEBUG, 1, "current derot freq=%d", internal->derot_freq); - internal->status = AGC1OK; - - /* There is signal in the band */ - if (config->tuner_get_bandwidth) - config->tuner_get_bandwidth(&state->frontend, &bandwidth); - - /* disable tuner I/O */ - stb0899_i2c_gate_ctrl(&state->frontend, 0); - - if (params->srate <= bandwidth / 2) - stb0899_search_tmg(state); /* For low rates (SCPC) */ - else - stb0899_check_tmg(state); /* For high rates (MCPC) */ - - if (internal->status == TIMINGOK) { - dprintk(state->verbose, FE_DEBUG, 1, - "TIMING OK ! Derot freq=%d, mclk=%d", - internal->derot_freq, internal->mclk); - - if (stb0899_search_carrier(state) == CARRIEROK) { /* Search for carrier */ - dprintk(state->verbose, FE_DEBUG, 1, - "CARRIER OK ! Derot freq=%d, mclk=%d", - internal->derot_freq, internal->mclk); - - if (stb0899_search_data(state) == DATAOK) { /* Check for data */ - dprintk(state->verbose, FE_DEBUG, 1, - "DATA OK ! Derot freq=%d, mclk=%d", - internal->derot_freq, internal->mclk); - - if (stb0899_check_range(state) == RANGEOK) { - dprintk(state->verbose, FE_DEBUG, 1, - "RANGE OK ! derot freq=%d, mclk=%d", - internal->derot_freq, internal->mclk); - - internal->freq = params->freq + ((internal->derot_freq * internal->mclk) / 1000); - reg = stb0899_read_reg(state, STB0899_PLPARM); - internal->fecrate = STB0899_GETFIELD(VITCURPUN, reg); - dprintk(state->verbose, FE_DEBUG, 1, - "freq=%d, internal resultant freq=%d", - params->freq, internal->freq); - - dprintk(state->verbose, FE_DEBUG, 1, - "internal puncture rate=%d", - internal->fecrate); - } - } - } - } - if (internal->status != RANGEOK) - next_sub_range(state); - - } while (internal->sub_range && internal->status != RANGEOK); - - /* Set the timing loop to tracking */ - stb0899_write_reg(state, STB0899_RTC, 0x33); - stb0899_write_reg(state, STB0899_CFD, 0xf7); - /* if locked and range ok, set Kdiv */ - if (internal->status == RANGEOK) { - dprintk(state->verbose, FE_DEBUG, 1, "Locked & Range OK !"); - stb0899_write_reg(state, STB0899_EQON, 0x41); /* Equalizer OFF while acquiring */ - stb0899_write_reg(state, STB0899_VITSYNC, 0x39); /* SN to b'11 for acquisition */ - - /* - * Carrier loop optimization versus - * symbol Rate/Puncture Rate for Tracking - */ - reg = stb0899_read_reg(state, STB0899_BCLC); - switch (internal->fecrate) { - case STB0899_FEC_1_2: /* 13 */ - stb0899_write_reg(state, STB0899_DEMAPVIT, 0x1a); - STB0899_SETFIELD_VAL(BETA, reg, betaTab[0][clnI]); - stb0899_write_reg(state, STB0899_BCLC, reg); - break; - case STB0899_FEC_2_3: /* 18 */ - stb0899_write_reg(state, STB0899_DEMAPVIT, 44); - STB0899_SETFIELD_VAL(BETA, reg, betaTab[1][clnI]); - stb0899_write_reg(state, STB0899_BCLC, reg); - break; - case STB0899_FEC_3_4: /* 21 */ - stb0899_write_reg(state, STB0899_DEMAPVIT, 60); - STB0899_SETFIELD_VAL(BETA, reg, betaTab[2][clnI]); - stb0899_write_reg(state, STB0899_BCLC, reg); - break; - case STB0899_FEC_5_6: /* 24 */ - stb0899_write_reg(state, STB0899_DEMAPVIT, 75); - STB0899_SETFIELD_VAL(BETA, reg, betaTab[3][clnI]); - stb0899_write_reg(state, STB0899_BCLC, reg); - break; - case STB0899_FEC_6_7: /* 25 */ - stb0899_write_reg(state, STB0899_DEMAPVIT, 88); - stb0899_write_reg(state, STB0899_ACLC, 0x88); - stb0899_write_reg(state, STB0899_BCLC, 0x9a); - break; - case STB0899_FEC_7_8: /* 26 */ - stb0899_write_reg(state, STB0899_DEMAPVIT, 94); - STB0899_SETFIELD_VAL(BETA, reg, betaTab[4][clnI]); - stb0899_write_reg(state, STB0899_BCLC, reg); - break; - default: - dprintk(state->verbose, FE_DEBUG, 1, "Unsupported Puncture Rate"); - break; - } - /* release stream merger RESET */ - reg = stb0899_read_reg(state, STB0899_TSTRES); - STB0899_SETFIELD_VAL(FRESRS, reg, 0); - stb0899_write_reg(state, STB0899_TSTRES, reg); - - /* disable carrier detector */ - reg = stb0899_read_reg(state, STB0899_CFD); - STB0899_SETFIELD_VAL(CFD_ON, reg, 0); - stb0899_write_reg(state, STB0899_CFD, reg); - - stb0899_read_regs(state, STB0899_EQUAI1, eq_const, 10); - } - - return internal->status; -} - -/* - * stb0899_dvbs2_config_uwp - * Configure UWP state machine - */ -static void stb0899_dvbs2_config_uwp(struct stb0899_state *state) -{ - struct stb0899_internal *internal = &state->internal; - struct stb0899_config *config = state->config; - u32 uwp1, uwp2, uwp3, reg; - - uwp1 = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_CNTRL1); - uwp2 = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_CNTRL2); - uwp3 = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_CNTRL3); - - STB0899_SETFIELD_VAL(UWP_ESN0_AVE, uwp1, config->esno_ave); - STB0899_SETFIELD_VAL(UWP_ESN0_QUANT, uwp1, config->esno_quant); - STB0899_SETFIELD_VAL(UWP_TH_SOF, uwp1, config->uwp_threshold_sof); - - STB0899_SETFIELD_VAL(FE_COARSE_TRK, uwp2, internal->av_frame_coarse); - STB0899_SETFIELD_VAL(FE_FINE_TRK, uwp2, internal->av_frame_fine); - STB0899_SETFIELD_VAL(UWP_MISS_TH, uwp2, config->miss_threshold); - - STB0899_SETFIELD_VAL(UWP_TH_ACQ, uwp3, config->uwp_threshold_acq); - STB0899_SETFIELD_VAL(UWP_TH_TRACK, uwp3, config->uwp_threshold_track); - - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_UWP_CNTRL1, STB0899_OFF0_UWP_CNTRL1, uwp1); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_UWP_CNTRL2, STB0899_OFF0_UWP_CNTRL2, uwp2); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_UWP_CNTRL3, STB0899_OFF0_UWP_CNTRL3, uwp3); - - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, SOF_SRCH_TO); - STB0899_SETFIELD_VAL(SOF_SEARCH_TIMEOUT, reg, config->sof_search_timeout); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_SOF_SRCH_TO, STB0899_OFF0_SOF_SRCH_TO, reg); -} - -/* - * stb0899_dvbs2_config_csm_auto - * Set CSM to AUTO mode - */ -static void stb0899_dvbs2_config_csm_auto(struct stb0899_state *state) -{ - u32 reg; - - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, CSM_CNTRL1); - STB0899_SETFIELD_VAL(CSM_AUTO_PARAM, reg, 1); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CSM_CNTRL1, STB0899_OFF0_CSM_CNTRL1, reg); -} - -static long Log2Int(int number) -{ - int i; - - i = 0; - while ((1 << i) <= abs(number)) - i++; - - if (number == 0) - i = 1; - - return i - 1; -} - -/* - * stb0899_dvbs2_calc_srate - * compute BTR_NOM_FREQ for the symbol rate - */ -static u32 stb0899_dvbs2_calc_srate(struct stb0899_state *state) -{ - struct stb0899_internal *internal = &state->internal; - struct stb0899_config *config = state->config; - - u32 dec_ratio, dec_rate, decim, remain, intval, btr_nom_freq; - u32 master_clk, srate; - - dec_ratio = (internal->master_clk * 2) / (5 * internal->srate); - dec_ratio = (dec_ratio == 0) ? 1 : dec_ratio; - dec_rate = Log2Int(dec_ratio); - decim = 1 << dec_rate; - master_clk = internal->master_clk / 1000; - srate = internal->srate / 1000; - - if (decim <= 4) { - intval = (decim * (1 << (config->btr_nco_bits - 1))) / master_clk; - remain = (decim * (1 << (config->btr_nco_bits - 1))) % master_clk; - } else { - intval = (1 << (config->btr_nco_bits - 1)) / (master_clk / 100) * decim / 100; - remain = (decim * (1 << (config->btr_nco_bits - 1))) % master_clk; - } - btr_nom_freq = (intval * srate) + ((remain * srate) / master_clk); - - return btr_nom_freq; -} - -/* - * stb0899_dvbs2_calc_dev - * compute the correction to be applied to symbol rate - */ -static u32 stb0899_dvbs2_calc_dev(struct stb0899_state *state) -{ - struct stb0899_internal *internal = &state->internal; - u32 dec_ratio, correction, master_clk, srate; - - dec_ratio = (internal->master_clk * 2) / (5 * internal->srate); - dec_ratio = (dec_ratio == 0) ? 1 : dec_ratio; - - master_clk = internal->master_clk / 1000; /* for integer Caculation*/ - srate = internal->srate / 1000; /* for integer Caculation*/ - correction = (512 * master_clk) / (2 * dec_ratio * srate); - - return correction; -} - -/* - * stb0899_dvbs2_set_srate - * Set DVBS2 symbol rate - */ -static void stb0899_dvbs2_set_srate(struct stb0899_state *state) -{ - struct stb0899_internal *internal = &state->internal; - - u32 dec_ratio, dec_rate, win_sel, decim, f_sym, btr_nom_freq; - u32 correction, freq_adj, band_lim, decim_cntrl, reg; - u8 anti_alias; - - /*set decimation to 1*/ - dec_ratio = (internal->master_clk * 2) / (5 * internal->srate); - dec_ratio = (dec_ratio == 0) ? 1 : dec_ratio; - dec_rate = Log2Int(dec_ratio); - - win_sel = 0; - if (dec_rate >= 5) - win_sel = dec_rate - 4; - - decim = (1 << dec_rate); - /* (FSamp/Fsymbol *100) for integer Caculation */ - f_sym = internal->master_clk / ((decim * internal->srate) / 1000); - - if (f_sym <= 2250) /* don't band limit signal going into btr block*/ - band_lim = 1; - else - band_lim = 0; /* band limit signal going into btr block*/ - - decim_cntrl = ((win_sel << 3) & 0x18) + ((band_lim << 5) & 0x20) + (dec_rate & 0x7); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_DECIM_CNTRL, STB0899_OFF0_DECIM_CNTRL, decim_cntrl); - - if (f_sym <= 3450) - anti_alias = 0; - else if (f_sym <= 4250) - anti_alias = 1; - else - anti_alias = 2; - - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_ANTI_ALIAS_SEL, STB0899_OFF0_ANTI_ALIAS_SEL, anti_alias); - btr_nom_freq = stb0899_dvbs2_calc_srate(state); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_BTR_NOM_FREQ, STB0899_OFF0_BTR_NOM_FREQ, btr_nom_freq); - - correction = stb0899_dvbs2_calc_dev(state); - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, BTR_CNTRL); - STB0899_SETFIELD_VAL(BTR_FREQ_CORR, reg, correction); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_BTR_CNTRL, STB0899_OFF0_BTR_CNTRL, reg); - - /* scale UWP+CSM frequency to sample rate*/ - freq_adj = internal->srate / (internal->master_clk / 4096); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_FREQ_ADJ_SCALE, STB0899_OFF0_FREQ_ADJ_SCALE, freq_adj); -} - -/* - * stb0899_dvbs2_set_btr_loopbw - * set bit timing loop bandwidth as a percentage of the symbol rate - */ -static void stb0899_dvbs2_set_btr_loopbw(struct stb0899_state *state) -{ - struct stb0899_internal *internal = &state->internal; - struct stb0899_config *config = state->config; - - u32 sym_peak = 23, zeta = 707, loopbw_percent = 60; - s32 dec_ratio, dec_rate, k_btr1_rshft, k_btr1, k_btr0_rshft; - s32 k_btr0, k_btr2_rshft, k_direct_shift, k_indirect_shift; - u32 decim, K, wn, k_direct, k_indirect; - u32 reg; - - dec_ratio = (internal->master_clk * 2) / (5 * internal->srate); - dec_ratio = (dec_ratio == 0) ? 1 : dec_ratio; - dec_rate = Log2Int(dec_ratio); - decim = (1 << dec_rate); - - sym_peak *= 576000; - K = (1 << config->btr_nco_bits) / (internal->master_clk / 1000); - K *= (internal->srate / 1000000) * decim; /*k=k 10^-8*/ - - if (K != 0) { - K = sym_peak / K; - wn = (4 * zeta * zeta) + 1000000; - wn = (2 * (loopbw_percent * 1000) * 40 * zeta) /wn; /*wn =wn 10^-8*/ - - k_indirect = (wn * wn) / K; - k_indirect = k_indirect; /*kindirect = kindirect 10^-6*/ - k_direct = (2 * wn * zeta) / K; /*kDirect = kDirect 10^-2*/ - k_direct *= 100; - - k_direct_shift = Log2Int(k_direct) - Log2Int(10000) - 2; - k_btr1_rshft = (-1 * k_direct_shift) + config->btr_gain_shift_offset; - k_btr1 = k_direct / (1 << k_direct_shift); - k_btr1 /= 10000; - - k_indirect_shift = Log2Int(k_indirect + 15) - 20 /*- 2*/; - k_btr0_rshft = (-1 * k_indirect_shift) + config->btr_gain_shift_offset; - k_btr0 = k_indirect * (1 << (-k_indirect_shift)); - k_btr0 /= 1000000; - - k_btr2_rshft = 0; - if (k_btr0_rshft > 15) { - k_btr2_rshft = k_btr0_rshft - 15; - k_btr0_rshft = 15; - } - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, BTR_LOOP_GAIN); - STB0899_SETFIELD_VAL(KBTR0_RSHFT, reg, k_btr0_rshft); - STB0899_SETFIELD_VAL(KBTR0, reg, k_btr0); - STB0899_SETFIELD_VAL(KBTR1_RSHFT, reg, k_btr1_rshft); - STB0899_SETFIELD_VAL(KBTR1, reg, k_btr1); - STB0899_SETFIELD_VAL(KBTR2_RSHFT, reg, k_btr2_rshft); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_BTR_LOOP_GAIN, STB0899_OFF0_BTR_LOOP_GAIN, reg); - } else - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_BTR_LOOP_GAIN, STB0899_OFF0_BTR_LOOP_GAIN, 0xc4c4f); -} - -/* - * stb0899_dvbs2_set_carr_freq - * set nominal frequency for carrier search - */ -static void stb0899_dvbs2_set_carr_freq(struct stb0899_state *state, s32 carr_freq, u32 master_clk) -{ - struct stb0899_config *config = state->config; - s32 crl_nom_freq; - u32 reg; - - crl_nom_freq = (1 << config->crl_nco_bits) / master_clk; - crl_nom_freq *= carr_freq; - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, CRL_NOM_FREQ); - STB0899_SETFIELD_VAL(CRL_NOM_FREQ, reg, crl_nom_freq); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CRL_NOM_FREQ, STB0899_OFF0_CRL_NOM_FREQ, reg); -} - -/* - * stb0899_dvbs2_init_calc - * Initialize DVBS2 UWP, CSM, carrier and timing loops - */ -static void stb0899_dvbs2_init_calc(struct stb0899_state *state) -{ - struct stb0899_internal *internal = &state->internal; - s32 steps, step_size; - u32 range, reg; - - /* config uwp and csm */ - stb0899_dvbs2_config_uwp(state); - stb0899_dvbs2_config_csm_auto(state); - - /* initialize BTR */ - stb0899_dvbs2_set_srate(state); - stb0899_dvbs2_set_btr_loopbw(state); - - if (internal->srate / 1000000 >= 15) - step_size = (1 << 17) / 5; - else if (internal->srate / 1000000 >= 10) - step_size = (1 << 17) / 7; - else if (internal->srate / 1000000 >= 5) - step_size = (1 << 17) / 10; - else - step_size = (1 << 17) / 4; - - range = internal->srch_range / 1000000; - steps = (10 * range * (1 << 17)) / (step_size * (internal->srate / 1000000)); - steps = (steps + 6) / 10; - steps = (steps == 0) ? 1 : steps; - if (steps % 2 == 0) - stb0899_dvbs2_set_carr_freq(state, internal->center_freq - - (internal->step_size * (internal->srate / 20000000)), - (internal->master_clk) / 1000000); - else - stb0899_dvbs2_set_carr_freq(state, internal->center_freq, (internal->master_clk) / 1000000); - - /*Set Carrier Search params (zigzag, num steps and freq step size*/ - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, ACQ_CNTRL2); - STB0899_SETFIELD_VAL(ZIGZAG, reg, 1); - STB0899_SETFIELD_VAL(NUM_STEPS, reg, steps); - STB0899_SETFIELD_VAL(FREQ_STEPSIZE, reg, step_size); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_ACQ_CNTRL2, STB0899_OFF0_ACQ_CNTRL2, reg); -} - -/* - * stb0899_dvbs2_btr_init - * initialize the timing loop - */ -static void stb0899_dvbs2_btr_init(struct stb0899_state *state) -{ - u32 reg; - - /* set enable BTR loopback */ - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, BTR_CNTRL); - STB0899_SETFIELD_VAL(INTRP_PHS_SENSE, reg, 1); - STB0899_SETFIELD_VAL(BTR_ERR_ENA, reg, 1); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_BTR_CNTRL, STB0899_OFF0_BTR_CNTRL, reg); - - /* fix btr freq accum at 0 */ - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_BTR_FREQ_INIT, STB0899_OFF0_BTR_FREQ_INIT, 0x10000000); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_BTR_FREQ_INIT, STB0899_OFF0_BTR_FREQ_INIT, 0x00000000); - - /* fix btr freq accum at 0 */ - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_BTR_PHS_INIT, STB0899_OFF0_BTR_PHS_INIT, 0x10000000); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_BTR_PHS_INIT, STB0899_OFF0_BTR_PHS_INIT, 0x00000000); -} - -/* - * stb0899_dvbs2_reacquire - * trigger a DVB-S2 acquisition - */ -static void stb0899_dvbs2_reacquire(struct stb0899_state *state) -{ - u32 reg = 0; - - /* demod soft reset */ - STB0899_SETFIELD_VAL(DVBS2_RESET, reg, 1); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_RESET_CNTRL, STB0899_OFF0_RESET_CNTRL, reg); - - /*Reset Timing Loop */ - stb0899_dvbs2_btr_init(state); - - /* reset Carrier loop */ - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CRL_FREQ_INIT, STB0899_OFF0_CRL_FREQ_INIT, (1 << 30)); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CRL_FREQ_INIT, STB0899_OFF0_CRL_FREQ_INIT, 0); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CRL_LOOP_GAIN, STB0899_OFF0_CRL_LOOP_GAIN, 0); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CRL_PHS_INIT, STB0899_OFF0_CRL_PHS_INIT, (1 << 30)); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CRL_PHS_INIT, STB0899_OFF0_CRL_PHS_INIT, 0); - - /*release demod soft reset */ - reg = 0; - STB0899_SETFIELD_VAL(DVBS2_RESET, reg, 0); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_RESET_CNTRL, STB0899_OFF0_RESET_CNTRL, reg); - - /* start acquisition process */ - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_ACQUIRE_TRIG, STB0899_OFF0_ACQUIRE_TRIG, 1); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_LOCK_LOST, STB0899_OFF0_LOCK_LOST, 0); - - /* equalizer Init */ - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_EQUALIZER_INIT, STB0899_OFF0_EQUALIZER_INIT, 1); - - /*Start equilizer */ - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_EQUALIZER_INIT, STB0899_OFF0_EQUALIZER_INIT, 0); - - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, EQ_CNTRL); - STB0899_SETFIELD_VAL(EQ_SHIFT, reg, 0); - STB0899_SETFIELD_VAL(EQ_DISABLE_UPDATE, reg, 0); - STB0899_SETFIELD_VAL(EQ_DELAY, reg, 0x05); - STB0899_SETFIELD_VAL(EQ_ADAPT_MODE, reg, 0x01); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_EQ_CNTRL, STB0899_OFF0_EQ_CNTRL, reg); - - /* RESET Packet delineator */ - stb0899_write_reg(state, STB0899_PDELCTRL, 0x4a); -} - -/* - * stb0899_dvbs2_get_dmd_status - * get DVB-S2 Demod LOCK status - */ -static enum stb0899_status stb0899_dvbs2_get_dmd_status(struct stb0899_state *state, int timeout) -{ - int time = -10, lock = 0, uwp, csm; - u32 reg; - - do { - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_STATUS); - dprintk(state->verbose, FE_DEBUG, 1, "DMD_STATUS=[0x%02x]", reg); - if (STB0899_GETFIELD(IF_AGC_LOCK, reg)) - dprintk(state->verbose, FE_DEBUG, 1, "------------->IF AGC LOCKED !"); - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_STAT2); - dprintk(state->verbose, FE_DEBUG, 1, "----------->DMD STAT2=[0x%02x]", reg); - uwp = STB0899_GETFIELD(UWP_LOCK, reg); - csm = STB0899_GETFIELD(CSM_LOCK, reg); - if (uwp && csm) - lock = 1; - - time += 10; - msleep(10); - - } while ((!lock) && (time <= timeout)); - - if (lock) { - dprintk(state->verbose, FE_DEBUG, 1, "----------------> DVB-S2 LOCK !"); - return DVBS2_DEMOD_LOCK; - } else { - return DVBS2_DEMOD_NOLOCK; - } -} - -/* - * stb0899_dvbs2_get_data_lock - * get FEC status - */ -static int stb0899_dvbs2_get_data_lock(struct stb0899_state *state, int timeout) -{ - int time = 0, lock = 0; - u8 reg; - - while ((!lock) && (time < timeout)) { - reg = stb0899_read_reg(state, STB0899_CFGPDELSTATUS1); - dprintk(state->verbose, FE_DEBUG, 1, "---------> CFGPDELSTATUS=[0x%02x]", reg); - lock = STB0899_GETFIELD(CFGPDELSTATUS_LOCK, reg); - time++; - } - - return lock; -} - -/* - * stb0899_dvbs2_get_fec_status - * get DVB-S2 FEC LOCK status - */ -static enum stb0899_status stb0899_dvbs2_get_fec_status(struct stb0899_state *state, int timeout) -{ - int time = 0, Locked; - - do { - Locked = stb0899_dvbs2_get_data_lock(state, 1); - time++; - msleep(1); - - } while ((!Locked) && (time < timeout)); - - if (Locked) { - dprintk(state->verbose, FE_DEBUG, 1, "---------->DVB-S2 FEC LOCK !"); - return DVBS2_FEC_LOCK; - } else { - return DVBS2_FEC_NOLOCK; - } -} - - -/* - * stb0899_dvbs2_init_csm - * set parameters for manual mode - */ -static void stb0899_dvbs2_init_csm(struct stb0899_state *state, int pilots, enum stb0899_modcod modcod) -{ - struct stb0899_internal *internal = &state->internal; - - s32 dvt_tbl = 1, two_pass = 0, agc_gain = 6, agc_shift = 0, loop_shift = 0, phs_diff_thr = 0x80; - s32 gamma_acq, gamma_rho_acq, gamma_trk, gamma_rho_trk, lock_count_thr; - u32 csm1, csm2, csm3, csm4; - - if (((internal->master_clk / internal->srate) <= 4) && (modcod <= 11) && (pilots == 1)) { - switch (modcod) { - case STB0899_QPSK_12: - gamma_acq = 25; - gamma_rho_acq = 2700; - gamma_trk = 12; - gamma_rho_trk = 180; - lock_count_thr = 8; - break; - case STB0899_QPSK_35: - gamma_acq = 38; - gamma_rho_acq = 7182; - gamma_trk = 14; - gamma_rho_trk = 308; - lock_count_thr = 8; - break; - case STB0899_QPSK_23: - gamma_acq = 42; - gamma_rho_acq = 9408; - gamma_trk = 17; - gamma_rho_trk = 476; - lock_count_thr = 8; - break; - case STB0899_QPSK_34: - gamma_acq = 53; - gamma_rho_acq = 16642; - gamma_trk = 19; - gamma_rho_trk = 646; - lock_count_thr = 8; - break; - case STB0899_QPSK_45: - gamma_acq = 53; - gamma_rho_acq = 17119; - gamma_trk = 22; - gamma_rho_trk = 880; - lock_count_thr = 8; - break; - case STB0899_QPSK_56: - gamma_acq = 55; - gamma_rho_acq = 19250; - gamma_trk = 23; - gamma_rho_trk = 989; - lock_count_thr = 8; - break; - case STB0899_QPSK_89: - gamma_acq = 60; - gamma_rho_acq = 24240; - gamma_trk = 24; - gamma_rho_trk = 1176; - lock_count_thr = 8; - break; - case STB0899_QPSK_910: - gamma_acq = 66; - gamma_rho_acq = 29634; - gamma_trk = 24; - gamma_rho_trk = 1176; - lock_count_thr = 8; - break; - default: - gamma_acq = 66; - gamma_rho_acq = 29634; - gamma_trk = 24; - gamma_rho_trk = 1176; - lock_count_thr = 8; - break; - } - - csm1 = STB0899_READ_S2REG(STB0899_S2DEMOD, CSM_CNTRL1); - STB0899_SETFIELD_VAL(CSM_AUTO_PARAM, csm1, 0); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CSM_CNTRL1, STB0899_OFF0_CSM_CNTRL1, csm1); - - csm1 = STB0899_READ_S2REG(STB0899_S2DEMOD, CSM_CNTRL1); - csm2 = STB0899_READ_S2REG(STB0899_S2DEMOD, CSM_CNTRL2); - csm3 = STB0899_READ_S2REG(STB0899_S2DEMOD, CSM_CNTRL3); - csm4 = STB0899_READ_S2REG(STB0899_S2DEMOD, CSM_CNTRL4); - - STB0899_SETFIELD_VAL(CSM_DVT_TABLE, csm1, dvt_tbl); - STB0899_SETFIELD_VAL(CSM_TWO_PASS, csm1, two_pass); - STB0899_SETFIELD_VAL(CSM_AGC_GAIN, csm1, agc_gain); - STB0899_SETFIELD_VAL(CSM_AGC_SHIFT, csm1, agc_shift); - STB0899_SETFIELD_VAL(FE_LOOP_SHIFT, csm1, loop_shift); - STB0899_SETFIELD_VAL(CSM_GAMMA_ACQ, csm2, gamma_acq); - STB0899_SETFIELD_VAL(CSM_GAMMA_RHOACQ, csm2, gamma_rho_acq); - STB0899_SETFIELD_VAL(CSM_GAMMA_TRACK, csm3, gamma_trk); - STB0899_SETFIELD_VAL(CSM_GAMMA_RHOTRACK, csm3, gamma_rho_trk); - STB0899_SETFIELD_VAL(CSM_LOCKCOUNT_THRESH, csm4, lock_count_thr); - STB0899_SETFIELD_VAL(CSM_PHASEDIFF_THRESH, csm4, phs_diff_thr); - - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CSM_CNTRL1, STB0899_OFF0_CSM_CNTRL1, csm1); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CSM_CNTRL2, STB0899_OFF0_CSM_CNTRL2, csm2); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CSM_CNTRL3, STB0899_OFF0_CSM_CNTRL3, csm3); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CSM_CNTRL4, STB0899_OFF0_CSM_CNTRL4, csm4); - } -} - -/* - * stb0899_dvbs2_get_srate - * get DVB-S2 Symbol Rate - */ -static u32 stb0899_dvbs2_get_srate(struct stb0899_state *state) -{ - struct stb0899_internal *internal = &state->internal; - struct stb0899_config *config = state->config; - - u32 bTrNomFreq, srate, decimRate, intval1, intval2, reg; - int div1, div2, rem1, rem2; - - div1 = config->btr_nco_bits / 2; - div2 = config->btr_nco_bits - div1 - 1; - - bTrNomFreq = STB0899_READ_S2REG(STB0899_S2DEMOD, BTR_NOM_FREQ); - - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DECIM_CNTRL); - decimRate = STB0899_GETFIELD(DECIM_RATE, reg); - decimRate = (1 << decimRate); - - intval1 = internal->master_clk / (1 << div1); - intval2 = bTrNomFreq / (1 << div2); - - rem1 = internal->master_clk % (1 << div1); - rem2 = bTrNomFreq % (1 << div2); - /* only for integer calculation */ - srate = (intval1 * intval2) + ((intval1 * rem2) / (1 << div2)) + ((intval2 * rem1) / (1 << div1)); - srate /= decimRate; /*symbrate = (btrnomfreq_register_val*MasterClock)/2^(27+decim_rate_field) */ - - return srate; -} - -/* - * stb0899_dvbs2_algo - * Search for signal, timing, carrier and data for a given - * frequency in a given range - */ -enum stb0899_status stb0899_dvbs2_algo(struct stb0899_state *state) -{ - struct stb0899_internal *internal = &state->internal; - enum stb0899_modcod modcod; - - s32 offsetfreq, searchTime, FecLockTime, pilots, iqSpectrum; - int i = 0; - u32 reg, csm1; - - if (internal->srate <= 2000000) { - searchTime = 5000; /* 5000 ms max time to lock UWP and CSM, SYMB <= 2Mbs */ - FecLockTime = 350; /* 350 ms max time to lock FEC, SYMB <= 2Mbs */ - } else if (internal->srate <= 5000000) { - searchTime = 2500; /* 2500 ms max time to lock UWP and CSM, 2Mbs < SYMB <= 5Mbs */ - FecLockTime = 170; /* 170 ms max time to lock FEC, 2Mbs< SYMB <= 5Mbs */ - } else if (internal->srate <= 10000000) { - searchTime = 1500; /* 1500 ms max time to lock UWP and CSM, 5Mbs <SYMB <= 10Mbs */ - FecLockTime = 80; /* 80 ms max time to lock FEC, 5Mbs< SYMB <= 10Mbs */ - } else if (internal->srate <= 15000000) { - searchTime = 500; /* 500 ms max time to lock UWP and CSM, 10Mbs <SYMB <= 15Mbs */ - FecLockTime = 50; /* 50 ms max time to lock FEC, 10Mbs< SYMB <= 15Mbs */ - } else if (internal->srate <= 20000000) { - searchTime = 300; /* 300 ms max time to lock UWP and CSM, 15Mbs < SYMB <= 20Mbs */ - FecLockTime = 30; /* 50 ms max time to lock FEC, 15Mbs< SYMB <= 20Mbs */ - } else if (internal->srate <= 25000000) { - searchTime = 250; /* 250 ms max time to lock UWP and CSM, 20 Mbs < SYMB <= 25Mbs */ - FecLockTime = 25; /* 25 ms max time to lock FEC, 20Mbs< SYMB <= 25Mbs */ - } else { - searchTime = 150; /* 150 ms max time to lock UWP and CSM, SYMB > 25Mbs */ - FecLockTime = 20; /* 20 ms max time to lock FEC, 20Mbs< SYMB <= 25Mbs */ - } - - /* Maintain Stream Merger in reset during acquisition */ - reg = stb0899_read_reg(state, STB0899_TSTRES); - STB0899_SETFIELD_VAL(FRESRS, reg, 1); - stb0899_write_reg(state, STB0899_TSTRES, reg); - - /* enable tuner I/O */ - stb0899_i2c_gate_ctrl(&state->frontend, 1); - - /* Move tuner to frequency */ - if (state->config->tuner_set_frequency) - state->config->tuner_set_frequency(&state->frontend, internal->freq); - if (state->config->tuner_get_frequency) - state->config->tuner_get_frequency(&state->frontend, &internal->freq); - - /* disable tuner I/O */ - stb0899_i2c_gate_ctrl(&state->frontend, 0); - - /* Set IF AGC to acquisition */ - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL); - STB0899_SETFIELD_VAL(IF_LOOP_GAIN, reg, 4); - STB0899_SETFIELD_VAL(IF_AGC_REF, reg, 32); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL, STB0899_OFF0_IF_AGC_CNTRL, reg); - - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL2); - STB0899_SETFIELD_VAL(IF_AGC_DUMP_PER, reg, 0); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL2, STB0899_OFF0_IF_AGC_CNTRL2, reg); - - /* Initialisation */ - stb0899_dvbs2_init_calc(state); - - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_CNTRL2); - switch (internal->inversion) { - case IQ_SWAP_OFF: - STB0899_SETFIELD_VAL(SPECTRUM_INVERT, reg, 0); - break; - case IQ_SWAP_ON: - STB0899_SETFIELD_VAL(SPECTRUM_INVERT, reg, 1); - break; - case IQ_SWAP_AUTO: /* use last successful search first */ - STB0899_SETFIELD_VAL(SPECTRUM_INVERT, reg, 1); - break; - } - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_DMD_CNTRL2, STB0899_OFF0_DMD_CNTRL2, reg); - stb0899_dvbs2_reacquire(state); - - /* Wait for demod lock (UWP and CSM) */ - internal->status = stb0899_dvbs2_get_dmd_status(state, searchTime); - - if (internal->status == DVBS2_DEMOD_LOCK) { - dprintk(state->verbose, FE_DEBUG, 1, "------------> DVB-S2 DEMOD LOCK !"); - i = 0; - /* Demod Locked, check FEC status */ - internal->status = stb0899_dvbs2_get_fec_status(state, FecLockTime); - - /*If false lock (UWP and CSM Locked but no FEC) try 3 time max*/ - while ((internal->status != DVBS2_FEC_LOCK) && (i < 3)) { - /* Read the frequency offset*/ - offsetfreq = STB0899_READ_S2REG(STB0899_S2DEMOD, CRL_FREQ); - - /* Set the Nominal frequency to the found frequency offset for the next reacquire*/ - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, CRL_NOM_FREQ); - STB0899_SETFIELD_VAL(CRL_NOM_FREQ, reg, offsetfreq); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CRL_NOM_FREQ, STB0899_OFF0_CRL_NOM_FREQ, reg); - stb0899_dvbs2_reacquire(state); - internal->status = stb0899_dvbs2_get_fec_status(state, searchTime); - i++; - } - } - - if (internal->status != DVBS2_FEC_LOCK) { - if (internal->inversion == IQ_SWAP_AUTO) { - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_CNTRL2); - iqSpectrum = STB0899_GETFIELD(SPECTRUM_INVERT, reg); - /* IQ Spectrum Inversion */ - STB0899_SETFIELD_VAL(SPECTRUM_INVERT, reg, !iqSpectrum); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_DMD_CNTRL2, STB0899_OFF0_DMD_CNTRL2, reg); - /* start acquistion process */ - stb0899_dvbs2_reacquire(state); - - /* Wait for demod lock (UWP and CSM) */ - internal->status = stb0899_dvbs2_get_dmd_status(state, searchTime); - if (internal->status == DVBS2_DEMOD_LOCK) { - i = 0; - /* Demod Locked, check FEC */ - internal->status = stb0899_dvbs2_get_fec_status(state, FecLockTime); - /*try thrice for false locks, (UWP and CSM Locked but no FEC) */ - while ((internal->status != DVBS2_FEC_LOCK) && (i < 3)) { - /* Read the frequency offset*/ - offsetfreq = STB0899_READ_S2REG(STB0899_S2DEMOD, CRL_FREQ); - - /* Set the Nominal frequency to the found frequency offset for the next reacquire*/ - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, CRL_NOM_FREQ); - STB0899_SETFIELD_VAL(CRL_NOM_FREQ, reg, offsetfreq); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CRL_NOM_FREQ, STB0899_OFF0_CRL_NOM_FREQ, reg); - - stb0899_dvbs2_reacquire(state); - internal->status = stb0899_dvbs2_get_fec_status(state, searchTime); - i++; - } - } -/* - if (pParams->DVBS2State == FE_DVBS2_FEC_LOCKED) - pParams->IQLocked = !iqSpectrum; -*/ - } - } - if (internal->status == DVBS2_FEC_LOCK) { - dprintk(state->verbose, FE_DEBUG, 1, "----------------> DVB-S2 FEC Lock !"); - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_STAT2); - modcod = STB0899_GETFIELD(UWP_DECODE_MOD, reg) >> 2; - pilots = STB0899_GETFIELD(UWP_DECODE_MOD, reg) & 0x01; - - if ((((10 * internal->master_clk) / (internal->srate / 10)) <= 410) && - (INRANGE(STB0899_QPSK_23, modcod, STB0899_QPSK_910)) && - (pilots == 1)) { - - stb0899_dvbs2_init_csm(state, pilots, modcod); - /* Wait for UWP,CSM and data LOCK 20ms max */ - internal->status = stb0899_dvbs2_get_fec_status(state, FecLockTime); - - i = 0; - while ((internal->status != DVBS2_FEC_LOCK) && (i < 3)) { - csm1 = STB0899_READ_S2REG(STB0899_S2DEMOD, CSM_CNTRL1); - STB0899_SETFIELD_VAL(CSM_TWO_PASS, csm1, 1); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CSM_CNTRL1, STB0899_OFF0_CSM_CNTRL1, csm1); - csm1 = STB0899_READ_S2REG(STB0899_S2DEMOD, CSM_CNTRL1); - STB0899_SETFIELD_VAL(CSM_TWO_PASS, csm1, 0); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CSM_CNTRL1, STB0899_OFF0_CSM_CNTRL1, csm1); - - internal->status = stb0899_dvbs2_get_fec_status(state, FecLockTime); - i++; - } - } - - if ((((10 * internal->master_clk) / (internal->srate / 10)) <= 410) && - (INRANGE(STB0899_QPSK_12, modcod, STB0899_QPSK_35)) && - (pilots == 1)) { - - /* Equalizer Disable update */ - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, EQ_CNTRL); - STB0899_SETFIELD_VAL(EQ_DISABLE_UPDATE, reg, 1); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_EQ_CNTRL, STB0899_OFF0_EQ_CNTRL, reg); - } - - /* slow down the Equalizer once locked */ - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, EQ_CNTRL); - STB0899_SETFIELD_VAL(EQ_SHIFT, reg, 0x02); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_EQ_CNTRL, STB0899_OFF0_EQ_CNTRL, reg); - - /* Store signal parameters */ - offsetfreq = STB0899_READ_S2REG(STB0899_S2DEMOD, CRL_FREQ); - - offsetfreq = offsetfreq / ((1 << 30) / 1000); - offsetfreq *= (internal->master_clk / 1000000); - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_CNTRL2); - if (STB0899_GETFIELD(SPECTRUM_INVERT, reg)) - offsetfreq *= -1; - - internal->freq = internal->freq - offsetfreq; - internal->srate = stb0899_dvbs2_get_srate(state); - - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_STAT2); - internal->modcod = STB0899_GETFIELD(UWP_DECODE_MOD, reg) >> 2; - internal->pilots = STB0899_GETFIELD(UWP_DECODE_MOD, reg) & 0x01; - internal->frame_length = (STB0899_GETFIELD(UWP_DECODE_MOD, reg) >> 1) & 0x01; - - /* Set IF AGC to tracking */ - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL); - STB0899_SETFIELD_VAL(IF_LOOP_GAIN, reg, 3); - - /* if QPSK 1/2,QPSK 3/5 or QPSK 2/3 set IF AGC reference to 16 otherwise 32*/ - if (INRANGE(STB0899_QPSK_12, internal->modcod, STB0899_QPSK_23)) - STB0899_SETFIELD_VAL(IF_AGC_REF, reg, 16); - - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL, STB0899_OFF0_IF_AGC_CNTRL, reg); - - reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL2); - STB0899_SETFIELD_VAL(IF_AGC_DUMP_PER, reg, 7); - stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL2, STB0899_OFF0_IF_AGC_CNTRL2, reg); - } - - /* Release Stream Merger Reset */ - reg = stb0899_read_reg(state, STB0899_TSTRES); - STB0899_SETFIELD_VAL(FRESRS, reg, 0); - stb0899_write_reg(state, STB0899_TSTRES, reg); - - return internal->status; -} |
