From 8bd135bab91f4659d4c62466029aff468e56f235 Mon Sep 17 00:00:00 2001 From: Manu Abraham Date: Tue, 3 Jul 2007 09:53:42 -0300 Subject: V4L/DVB (9375): Add STB0899 support Signed-off-by: Manu Abraham Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/stb0899_algo.c | 1542 ++++++++++++++++++++++++++++ 1 file changed, 1542 insertions(+) create mode 100644 drivers/media/dvb/frontends/stb0899_algo.c (limited to 'drivers/media/dvb/frontends/stb0899_algo.c') diff --git a/drivers/media/dvb/frontends/stb0899_algo.c b/drivers/media/dvb/frontends/stb0899_algo.c new file mode 100644 index 000000000000..0ae964975814 --- /dev/null +++ b/drivers/media/dvb/frontends/stb0899_algo.c @@ -0,0 +1,1542 @@ +/* + 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" + +/* + * BinaryFloatDiv + * float division with integer + */ +static long BinaryFloatDiv(long n1, long n2, int precision) +{ + int i = 0; + long result = 0; + + while (i <= precision) { + if (n1 < n2) { + result *= 2; + n1 *= 2; + } else { + result = result * 2 + 1; + n1 = (n1 - n2) * 2; + } + i++; + } + + return result; +} + +/* + * stb0899_calc_srate + * Compute symbol rate + */ +static u32 stb0899_calc_srate(u32 master_clk, u8 *sfr) +{ + u32 tmp, tmp2, mclk; + + mclk = master_clk / 4096L; /* MasterClock * 10 / 2^20 */ + tmp = (((u32) sfr[0] << 12) + ((u32) sfr[1] << 4)) / 16; + + tmp *= mclk; + tmp /= 16; + tmp2 = ((u32) sfr[2] * mclk) / 256; + tmp += tmp2; + + return tmp; +} + +/* + * stb0899_get_srate + * Get the current symbol rate + */ +u32 stb0899_get_srate(struct stb0899_state *state) +{ + struct stb0899_internal *internal = &state->internal; + u8 sfr[4]; + + stb0899_read_regs(state, STB0899_SFRH, sfr, 3); + + return stb0899_calc_srate(internal->master_clk, sfr); +} + +/* + * 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, tmp_up, srate_up; + u8 sfr_up[3], sfr[3]; + + srate_up = srate; + 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_up += (srate_up * 3) / 100; + + tmp = BinaryFloatDiv(srate, master_clk, 20); + tmp_up = BinaryFloatDiv(srate_up, master_clk, 20); + + sfr_up[0] = (tmp_up >> 12) & 0xff; + sfr_up[1] = (tmp_up >> 4) & 0xff; + sfr_up[2] = tmp_up & 0x0f; + + sfr[0] = (tmp >> 12) & 0xff; + sfr[1] = (tmp >> 4) & 0xff; + sfr[2] = tmp & 0x0f; + + stb0899_write_regs(state, STB0899_SFRUPH, sfr_up, 3); + stb0899_write_regs(state, STB0899_SFRH, sfr, 3); + + return srate; +} + +/* + * stb0899_calc_loop_time + * Compute the amount of time needed by the timing loop to lock + * SymbolRate: Symbol rate + * return: timing loop time constant (ms) + */ +static long stb0899_calc_loop_time(long srate) +{ + if (srate > 0) + return (100000 / (srate / 1000)); + else + return 0; +} + +/* + * 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) { + config->tuner_get_bandwidth(&state->frontend, &bandwidth); + 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, timing; + u8 reg; + + msleep(internal->t_timing); + + reg = stb0899_read_reg(state, STB0899_RTF); + STB0899_SETFIELD_VAL(RTF_TIMING_LOOP_FREQ, reg, 0xf2); + stb0899_write_reg(state, STB0899_RTF, reg); + 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) && (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_RTF, 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_RTF, 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_RTF, 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; + + 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_RTF, 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[1]; + 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_timing = stb0899_calc_loop_time(params->srate); + 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 */ + + reg = stb0899_read_reg(state, STB0899_RTF); + STB0899_SETFIELD_VAL(RTF_TIMING_LOOP_FREQ, reg, 0); + stb0899_write_reg(state, STB0899_RTF, reg); + reg = stb0899_read_reg(state, STB0899_CFD); + STB0899_SETFIELD_VAL(CFD_ON, reg, 1); + stb0899_write_reg(state, STB0899_RTF, reg); + + internal->derot_freq = 0; + internal->status = NOAGC1; + + /* 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); + + msleep(100); + + if (state->config->tuner_get_frequency) + state->config->tuner_get_frequency(&state->frontend, &internal->freq); + + msleep(internal->t_agc1 + internal->t_agc2 + internal->t_timing); /* 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); + 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); + reg = 0; + /* 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 + */ + switch (internal->fecrate) { + case STB0899_FEC_1_2: /* 13 */ + STB0899_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 0x1a); + stb0899_write_reg(state, STB0899_DEMAPVIT, reg); + STB0899_SETFIELD_VAL(BETA, reg, betaTab[0][clnI]); + stb0899_write_reg(state, STB0899_BCLC, reg); + break; + case STB0899_FEC_2_3: /* 18 */ + STB0899_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 44); + stb0899_write_reg(state, STB0899_DEMAPVIT, reg); + STB0899_SETFIELD_VAL(BETA, reg, betaTab[1][clnI]); + stb0899_write_reg(state, STB0899_BCLC, reg); + break; + case STB0899_FEC_3_4: /* 21 */ + STB0899_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 60); + stb0899_write_reg(state, STB0899_DEMAPVIT, reg); + STB0899_SETFIELD_VAL(BETA, reg, betaTab[2][clnI]); + stb0899_write_reg(state, STB0899_BCLC, reg); + break; + case STB0899_FEC_5_6: /* 24 */ + STB0899_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 75); + stb0899_write_reg(state, STB0899_DEMAPVIT, reg); + STB0899_SETFIELD_VAL(BETA, reg, betaTab[3][clnI]); + stb0899_write_reg(state, STB0899_BCLC, reg); + break; + case STB0899_FEC_6_7: /* 25 */ + STB0899_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 88); + stb0899_write_reg(state, STB0899_DEMAPVIT, reg); + stb0899_write_reg(state, STB0899_ACLC, 0x88); + stb0899_write_reg(state, STB0899_BCLC, 0x9a); + break; + case STB0899_FEC_7_8: /* 26 */ + STB0899_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 94); + stb0899_write_reg(state, STB0899_DEMAPVIT, reg); + 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_RTF, 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); +} + +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*/ + K = sym_peak / K; + + if (K != 0) { + 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 srate <= 15000000) { + searchTime = 500; /* 500 ms max time to lock UWP and CSM, 10Mbs 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); + + /* 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); + + /* 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, offsetfreq); + 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, offsetfreq); + + 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; +} -- cgit v1.2.3 From b797c206168992e8a2c080e80e39a56410cdaac0 Mon Sep 17 00:00:00 2001 From: Manu Abraham Date: Sat, 24 Feb 2007 09:14:39 -0300 Subject: V4L/DVB (9380): FIX: a possible division by zero Thanks to Marko Schluessler Signed-off-by: Manu Abraham Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/stb0899_algo.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/media/dvb/frontends/stb0899_algo.c') diff --git a/drivers/media/dvb/frontends/stb0899_algo.c b/drivers/media/dvb/frontends/stb0899_algo.c index 0ae964975814..876931527c71 100644 --- a/drivers/media/dvb/frontends/stb0899_algo.c +++ b/drivers/media/dvb/frontends/stb0899_algo.c @@ -933,9 +933,9 @@ static void stb0899_dvbs2_set_btr_loopbw(struct stb0899_state *state) sym_peak *= 576000; K = (1 << config->btr_nco_bits) / (internal->master_clk / 1000); K *= (internal->srate / 1000000) * decim; /*k=k 10^-8*/ - K = sym_peak / K; if (K != 0) { + K = sym_peak / K; wn = (4 * zeta * zeta) + 1000000; wn = (2 * (loopbw_percent * 1000) * 40 * zeta) /wn; /*wn =wn 10^-8*/ -- cgit v1.2.3 From 381d8047031d8b7c2aca4b0dd624108c807262ec Mon Sep 17 00:00:00 2001 From: Manu Abraham Date: Mon, 2 Jul 2007 09:36:47 -0300 Subject: V4L/DVB (9384): FIX: register value is not reset to 0 after write Signed-off-by: Manu Abraham Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/stb0899_algo.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/media/dvb/frontends/stb0899_algo.c') diff --git a/drivers/media/dvb/frontends/stb0899_algo.c b/drivers/media/dvb/frontends/stb0899_algo.c index 876931527c71..914a82544c71 100644 --- a/drivers/media/dvb/frontends/stb0899_algo.c +++ b/drivers/media/dvb/frontends/stb0899_algo.c @@ -692,24 +692,28 @@ enum stb0899_status stb0899_dvbs_algo(struct stb0899_state *state) case STB0899_FEC_1_2: /* 13 */ STB0899_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 0x1a); stb0899_write_reg(state, STB0899_DEMAPVIT, reg); + reg = 0; STB0899_SETFIELD_VAL(BETA, reg, betaTab[0][clnI]); stb0899_write_reg(state, STB0899_BCLC, reg); break; case STB0899_FEC_2_3: /* 18 */ STB0899_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 44); stb0899_write_reg(state, STB0899_DEMAPVIT, reg); + reg = 0; STB0899_SETFIELD_VAL(BETA, reg, betaTab[1][clnI]); stb0899_write_reg(state, STB0899_BCLC, reg); break; case STB0899_FEC_3_4: /* 21 */ STB0899_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 60); stb0899_write_reg(state, STB0899_DEMAPVIT, reg); + reg = 0; STB0899_SETFIELD_VAL(BETA, reg, betaTab[2][clnI]); stb0899_write_reg(state, STB0899_BCLC, reg); break; case STB0899_FEC_5_6: /* 24 */ STB0899_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 75); stb0899_write_reg(state, STB0899_DEMAPVIT, reg); + reg = 0; STB0899_SETFIELD_VAL(BETA, reg, betaTab[3][clnI]); stb0899_write_reg(state, STB0899_BCLC, reg); break; @@ -722,6 +726,7 @@ enum stb0899_status stb0899_dvbs_algo(struct stb0899_state *state) case STB0899_FEC_7_8: /* 26 */ STB0899_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 94); stb0899_write_reg(state, STB0899_DEMAPVIT, reg); + reg = 0; STB0899_SETFIELD_VAL(BETA, reg, betaTab[4][clnI]); stb0899_write_reg(state, STB0899_BCLC, reg); break; -- cgit v1.2.3 From 57ad94a63548b413dc11039f462480994a06c809 Mon Sep 17 00:00:00 2001 From: Manu Abraham Date: Mon, 2 Jul 2007 09:51:54 -0300 Subject: V4L/DVB (9387): FIX: Write to the correct register Thanks to Marko Schluessler for pointing it out Signed-off-by: Manu Abraham Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/stb0899_algo.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'drivers/media/dvb/frontends/stb0899_algo.c') diff --git a/drivers/media/dvb/frontends/stb0899_algo.c b/drivers/media/dvb/frontends/stb0899_algo.c index 914a82544c71..5b55b0dea7e4 100644 --- a/drivers/media/dvb/frontends/stb0899_algo.c +++ b/drivers/media/dvb/frontends/stb0899_algo.c @@ -277,7 +277,7 @@ static enum stb0899_status stb0899_check_carrier(struct stb0899_state *state) reg = stb0899_read_reg(state, STB0899_CFD); STB0899_SETFIELD_VAL(CFD_ON, reg, 1); - stb0899_write_reg(state, STB0899_RTF, reg); + 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); @@ -311,7 +311,7 @@ static enum stb0899_status stb0899_search_carrier(struct stb0899_state *state) reg = stb0899_read_reg(state, STB0899_CFD); STB0899_SETFIELD_VAL(CFD_ON, reg, 1); - stb0899_write_reg(state, STB0899_RTF, reg); + stb0899_write_reg(state, STB0899_CFD, reg); do { dprintk(state->verbose, FE_DEBUG, 1, "Derot Freq=%d, mclk=%d", derot_freq, internal->mclk); @@ -326,7 +326,7 @@ static enum stb0899_status stb0899_search_carrier(struct stb0899_state *state) if (next_loop) { reg = stb0899_read_reg(state, STB0899_CFD); STB0899_SETFIELD_VAL(CFD_ON, reg, 1); - stb0899_write_reg(state, STB0899_RTF, reg); + 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)); @@ -429,7 +429,7 @@ static enum stb0899_status stb0899_search_data(struct stb0899_state *state) 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_RTF, reg); + 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)); @@ -608,7 +608,7 @@ enum stb0899_status stb0899_dvbs_algo(struct stb0899_state *state) stb0899_write_reg(state, STB0899_RTF, reg); reg = stb0899_read_reg(state, STB0899_CFD); STB0899_SETFIELD_VAL(CFD_ON, reg, 1); - stb0899_write_reg(state, STB0899_RTF, reg); + stb0899_write_reg(state, STB0899_CFD, reg); internal->derot_freq = 0; internal->status = NOAGC1; @@ -742,7 +742,7 @@ enum stb0899_status stb0899_dvbs_algo(struct stb0899_state *state) /* disable carrier detector */ reg = stb0899_read_reg(state, STB0899_CFD); STB0899_SETFIELD_VAL(CFD_ON, reg, 0); - stb0899_write_reg(state, STB0899_RTF, reg); + stb0899_write_reg(state, STB0899_CFD, reg); stb0899_read_regs(state, STB0899_EQUAI1, eq_const, 10); } -- cgit v1.2.3 From 08bcdbec683c8ded6d19f361cd806efcb77c287f Mon Sep 17 00:00:00 2001 From: Marko Schluessler Date: Fri, 21 Sep 2007 18:40:14 -0300 Subject: V4L/DVB (9390): Offset Freq has been set in reg Signed-off-by: Marko Schluessler Signed-off-by: Manu Abraham Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/stb0899_algo.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/media/dvb/frontends/stb0899_algo.c') diff --git a/drivers/media/dvb/frontends/stb0899_algo.c b/drivers/media/dvb/frontends/stb0899_algo.c index 5b55b0dea7e4..3fbf00ed79d3 100644 --- a/drivers/media/dvb/frontends/stb0899_algo.c +++ b/drivers/media/dvb/frontends/stb0899_algo.c @@ -1419,7 +1419,7 @@ enum stb0899_status stb0899_dvbs2_algo(struct stb0899_state *state) /* 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, 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++; @@ -1450,7 +1450,7 @@ enum stb0899_status stb0899_dvbs2_algo(struct stb0899_state *state) /* 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, 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); -- cgit v1.2.3 From 7e4e8c52e3f87a83ce967397bb389f75cb71742d Mon Sep 17 00:00:00 2001 From: Manu Abraham Date: Fri, 19 Oct 2007 06:27:56 -0300 Subject: V4L/DVB (9427): Code simplification: Sleep only for the required time interval. * Saves 70 mS LOCK time on the STB6100 based * Saves 100 mS LOCK time on the TDA8261 based Signed-off-by: Manu Abraham Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/stb0899_algo.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers/media/dvb/frontends/stb0899_algo.c') diff --git a/drivers/media/dvb/frontends/stb0899_algo.c b/drivers/media/dvb/frontends/stb0899_algo.c index 3fbf00ed79d3..ff3a3f83a6d3 100644 --- a/drivers/media/dvb/frontends/stb0899_algo.c +++ b/drivers/media/dvb/frontends/stb0899_algo.c @@ -618,8 +618,6 @@ enum stb0899_status stb0899_dvbs_algo(struct stb0899_state *state) if (state->config->tuner_set_frequency) state->config->tuner_set_frequency(&state->frontend, internal->freq); - msleep(100); - if (state->config->tuner_get_frequency) state->config->tuner_get_frequency(&state->frontend, &internal->freq); -- cgit v1.2.3 From 7d8f1e57646d7121089ba21e270c1b390de9a17a Mon Sep 17 00:00:00 2001 From: Marko Schluessler Date: Tue, 23 Oct 2007 19:56:18 -0300 Subject: V4L/DVB (9428): Fix: assignment of wrong values Signed-off-by: Marko Schluessler Signed-off-by: Manu Abraham Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/stb0899_algo.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/media/dvb/frontends/stb0899_algo.c') diff --git a/drivers/media/dvb/frontends/stb0899_algo.c b/drivers/media/dvb/frontends/stb0899_algo.c index ff3a3f83a6d3..17f0311ead67 100644 --- a/drivers/media/dvb/frontends/stb0899_algo.c +++ b/drivers/media/dvb/frontends/stb0899_algo.c @@ -515,7 +515,7 @@ enum stb0899_status stb0899_dvbs_algo(struct stb0899_state *state) struct stb0899_config *config = state->config; u8 bclc, reg; - u8 cfr[1]; + u8 cfr[2]; u8 eq_const[10]; s32 clnI = 3; u32 bandwidth = 0; -- cgit v1.2.3 From b655b6cbc9238aa34e90aa6763088f6d4e830347 Mon Sep 17 00:00:00 2001 From: Arvo Jarve Date: Tue, 30 Oct 2007 09:16:17 -0300 Subject: V4L/DVB (9430): stb0899: avoid parameter overwriting BUG! Setting CRL parameter overwrote the CR Algorithm type, eventually leading to wrong search algorithm to be employed in the DVB-S carrier loop optimization. Symptom: Once the CR optimization stage is passed either way, in a successful or failed manner, the very next carrier search will fail, due to no Carrier Search Algorithm specified. Signed-off-by: Arvo Jarve Signed-off-by: Manu Abraham Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/stb0899_algo.c | 25 +++++++------------------ 1 file changed, 7 insertions(+), 18 deletions(-) (limited to 'drivers/media/dvb/frontends/stb0899_algo.c') diff --git a/drivers/media/dvb/frontends/stb0899_algo.c b/drivers/media/dvb/frontends/stb0899_algo.c index 17f0311ead67..37717a4397a3 100644 --- a/drivers/media/dvb/frontends/stb0899_algo.c +++ b/drivers/media/dvb/frontends/stb0899_algo.c @@ -675,7 +675,6 @@ enum stb0899_status stb0899_dvbs_algo(struct stb0899_state *state) /* Set the timing loop to tracking */ stb0899_write_reg(state, STB0899_RTC, 0x33); stb0899_write_reg(state, STB0899_CFD, 0xf7); - reg = 0; /* if locked and range ok, set Kdiv */ if (internal->status == RANGEOK) { dprintk(state->verbose, FE_DEBUG, 1, "Locked & Range OK !"); @@ -686,45 +685,35 @@ enum stb0899_status stb0899_dvbs_algo(struct stb0899_state *state) * 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_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 0x1a); - stb0899_write_reg(state, STB0899_DEMAPVIT, reg); - reg = 0; + 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_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 44); - stb0899_write_reg(state, STB0899_DEMAPVIT, reg); - reg = 0; + 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_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 60); - stb0899_write_reg(state, STB0899_DEMAPVIT, reg); - reg = 0; + 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_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 75); - stb0899_write_reg(state, STB0899_DEMAPVIT, reg); - reg = 0; + 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_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 88); - stb0899_write_reg(state, STB0899_DEMAPVIT, reg); + 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_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 94); - stb0899_write_reg(state, STB0899_DEMAPVIT, reg); - reg = 0; + stb0899_write_reg(state, STB0899_DEMAPVIT, 94); STB0899_SETFIELD_VAL(BETA, reg, betaTab[4][clnI]); stb0899_write_reg(state, STB0899_BCLC, reg); break; -- cgit v1.2.3 From ba8862a83f2db95cdd8e9193e83915e5e278927a Mon Sep 17 00:00:00 2001 From: Manu Abraham Date: Wed, 31 Oct 2007 19:22:02 -0300 Subject: V4L/DVB (9437): Disable Symbol rate auto scan feature Signed-off-by: Manu Abraham Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/stb0899_algo.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'drivers/media/dvb/frontends/stb0899_algo.c') diff --git a/drivers/media/dvb/frontends/stb0899_algo.c b/drivers/media/dvb/frontends/stb0899_algo.c index 37717a4397a3..1363ae396f9e 100644 --- a/drivers/media/dvb/frontends/stb0899_algo.c +++ b/drivers/media/dvb/frontends/stb0899_algo.c @@ -91,7 +91,7 @@ static u32 stb0899_set_srate(struct stb0899_state *state, u32 master_clk, u32 sr u32 tmp, tmp_up, srate_up; u8 sfr_up[3], sfr[3]; - srate_up = srate; +// srate_up = srate; dprintk(state->verbose, FE_DEBUG, 1, "-->"); /* * in order to have the maximum precision, the symbol rate entered into @@ -99,20 +99,20 @@ static u32 stb0899_set_srate(struct stb0899_state *state, u32 master_clk, u32 sr * In this purpose, the symbol rate value is rounded (1 is added on the bit * below the LSB ) */ - srate_up += (srate_up * 3) / 100; +// srate_up += (srate_up * 3) / 100; tmp = BinaryFloatDiv(srate, master_clk, 20); - tmp_up = BinaryFloatDiv(srate_up, master_clk, 20); +// tmp_up = BinaryFloatDiv(srate_up, master_clk, 20); - sfr_up[0] = (tmp_up >> 12) & 0xff; - sfr_up[1] = (tmp_up >> 4) & 0xff; - sfr_up[2] = tmp_up & 0x0f; +// sfr_up[0] = (tmp_up >> 12) & 0xff; +// sfr_up[1] = (tmp_up >> 4) & 0xff; +// sfr_up[2] = tmp_up & 0x0f; sfr[0] = (tmp >> 12) & 0xff; sfr[1] = (tmp >> 4) & 0xff; sfr[2] = tmp & 0x0f; - stb0899_write_regs(state, STB0899_SFRUPH, sfr_up, 3); +// stb0899_write_regs(state, STB0899_SFRUPH, sfr_up, 3); stb0899_write_regs(state, STB0899_SFRH, sfr, 3); return srate; -- cgit v1.2.3 From eadf29b941df1c0e0e585d7482e096ca608a7bb7 Mon Sep 17 00:00:00 2001 From: Arvo Jarve Date: Fri, 9 Nov 2007 17:24:45 -0300 Subject: V4L/DVB (9438): Bug! RTF is signed Signed-off-by: Arvo Jarve Signed-off-by: Manu Abraham Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/stb0899_algo.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers/media/dvb/frontends/stb0899_algo.c') diff --git a/drivers/media/dvb/frontends/stb0899_algo.c b/drivers/media/dvb/frontends/stb0899_algo.c index 1363ae396f9e..2256fc70c85a 100644 --- a/drivers/media/dvb/frontends/stb0899_algo.c +++ b/drivers/media/dvb/frontends/stb0899_algo.c @@ -194,8 +194,9 @@ static void stb0899_first_subrange(struct stb0899_state *state) static enum stb0899_status stb0899_check_tmg(struct stb0899_state *state) { struct stb0899_internal *internal = &state->internal; - int lock, timing; + int lock; u8 reg; + s8 timing; msleep(internal->t_timing); @@ -207,7 +208,7 @@ static enum stb0899_status stb0899_check_tmg(struct stb0899_state *state) timing = stb0899_read_reg(state, STB0899_RTF); if (lock >= 42) { - if ((lock > 48) && (timing >= 110)) { + if ((lock > 48) && (ABS(timing) >= 110)) { internal->status = ANALOGCARRIER; dprintk(state->verbose, FE_DEBUG, 1, "-->ANALOG Carrier !"); } else { -- cgit v1.2.3 From 1b792e05e99f0f56eb4da91084ac9b8e8a132a15 Mon Sep 17 00:00:00 2001 From: Manu Abraham Date: Fri, 9 Nov 2007 17:33:26 -0300 Subject: V4L/DVB (9439): Bug! SFRL nibble got swapped The Bug was found by Arvo Jarve It was a wonder how it worked in the case with this bug, STM verified this that this nibble was in fact insignificant and can be ignored. But still we need to fix all inconsistencies. Signed-off-by: Manu Abraham Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/stb0899_algo.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/media/dvb/frontends/stb0899_algo.c') diff --git a/drivers/media/dvb/frontends/stb0899_algo.c b/drivers/media/dvb/frontends/stb0899_algo.c index 2256fc70c85a..6913bebe7162 100644 --- a/drivers/media/dvb/frontends/stb0899_algo.c +++ b/drivers/media/dvb/frontends/stb0899_algo.c @@ -110,7 +110,7 @@ static u32 stb0899_set_srate(struct stb0899_state *state, u32 master_clk, u32 sr sfr[0] = (tmp >> 12) & 0xff; sfr[1] = (tmp >> 4) & 0xff; - sfr[2] = tmp & 0x0f; + sfr[2] = tmp & 0xf0; // stb0899_write_regs(state, STB0899_SFRUPH, sfr_up, 3); stb0899_write_regs(state, STB0899_SFRH, sfr, 3); -- cgit v1.2.3 From d0a41e8f8fa3d0fe94ebd1cc115f73e3d7b97172 Mon Sep 17 00:00:00 2001 From: Arvo Jarve Date: Fri, 9 Nov 2007 18:21:27 -0300 Subject: V4L/DVB (9440): Bug in previous commit Signed-off-by: Arvo Jarve Signed-off-by: Manu Abraham Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/stb0899_algo.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/media/dvb/frontends/stb0899_algo.c') diff --git a/drivers/media/dvb/frontends/stb0899_algo.c b/drivers/media/dvb/frontends/stb0899_algo.c index 6913bebe7162..2d2b87cf6d00 100644 --- a/drivers/media/dvb/frontends/stb0899_algo.c +++ b/drivers/media/dvb/frontends/stb0899_algo.c @@ -110,7 +110,7 @@ static u32 stb0899_set_srate(struct stb0899_state *state, u32 master_clk, u32 sr sfr[0] = (tmp >> 12) & 0xff; sfr[1] = (tmp >> 4) & 0xff; - sfr[2] = tmp & 0xf0; + sfr[2] = (tmp << 4) & 0xf0; // stb0899_write_regs(state, STB0899_SFRUPH, sfr_up, 3); stb0899_write_regs(state, STB0899_SFRH, sfr, 3); -- cgit v1.2.3 From 27713c8ba45e807c64c53a8a865adbe3a73f3b2d Mon Sep 17 00:00:00 2001 From: Reinhard Nissl Date: Mon, 21 Jan 2008 16:43:18 -0300 Subject: V4L/DVB (9449): Code Simplification: use do_div() instead Signed-off-by: Reinhard Nissl Signed-off-by: Manu Abraham Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/stb0899_algo.c | 69 +++++++++++++++--------------- 1 file changed, 34 insertions(+), 35 deletions(-) (limited to 'drivers/media/dvb/frontends/stb0899_algo.c') diff --git a/drivers/media/dvb/frontends/stb0899_algo.c b/drivers/media/dvb/frontends/stb0899_algo.c index 2d2b87cf6d00..f1432cb29262 100644 --- a/drivers/media/dvb/frontends/stb0899_algo.c +++ b/drivers/media/dvb/frontends/stb0899_algo.c @@ -23,27 +23,12 @@ #include "stb0899_priv.h" #include "stb0899_reg.h" -/* - * BinaryFloatDiv - * float division with integer - */ -static long BinaryFloatDiv(long n1, long n2, int precision) +inline u32 stb0899_do_div(u64 n, u32 d) { - int i = 0; - long result = 0; + /* wrap do_div() for ease of use */ - while (i <= precision) { - if (n1 < n2) { - result *= 2; - n1 *= 2; - } else { - result = result * 2 + 1; - n1 = (n1 - n2) * 2; - } - i++; - } - - return result; + do_div(n, d); + return n; } /* @@ -52,15 +37,15 @@ static long BinaryFloatDiv(long n1, long n2, int precision) */ static u32 stb0899_calc_srate(u32 master_clk, u8 *sfr) { - u32 tmp, tmp2, mclk; + u64 tmp; - mclk = master_clk / 4096L; /* MasterClock * 10 / 2^20 */ - tmp = (((u32) sfr[0] << 12) + ((u32) sfr[1] << 4)) / 16; + /* srate = (SFR * master_clk) >> 20 */ - tmp *= mclk; - tmp /= 16; - tmp2 = ((u32) sfr[2] * mclk) / 256; - tmp += tmp2; + /* 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; } @@ -72,7 +57,7 @@ static u32 stb0899_calc_srate(u32 master_clk, u8 *sfr) u32 stb0899_get_srate(struct stb0899_state *state) { struct stb0899_internal *internal = &state->internal; - u8 sfr[4]; + u8 sfr[3]; stb0899_read_regs(state, STB0899_SFRH, sfr, 3); @@ -101,16 +86,30 @@ static u32 stb0899_set_srate(struct stb0899_state *state, u32 master_clk, u32 sr */ // srate_up += (srate_up * 3) / 100; - tmp = BinaryFloatDiv(srate, master_clk, 20); -// tmp_up = BinaryFloatDiv(srate_up, master_clk, 20); + /* + * 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_up = stb0899_do_div((((u64)srate_up) << 21) + master_clk, 2 * master_clk); +// tmp_up <<= 4; + + tmp = stb0899_do_div((((u64)srate) << 21) + master_clk, 2 * master_clk); + tmp <<= 4; -// sfr_up[0] = (tmp_up >> 12) & 0xff; -// sfr_up[1] = (tmp_up >> 4) & 0xff; -// sfr_up[2] = tmp_up & 0x0f; +// sfr_up[0] = tmp_up >> 16; +// sfr_up[1] = tmp_up >> 8; +// sfr_up[2] = tmp_up; - sfr[0] = (tmp >> 12) & 0xff; - sfr[1] = (tmp >> 4) & 0xff; - sfr[2] = (tmp << 4) & 0xf0; + sfr[0] = tmp >> 16; + sfr[1] = tmp >> 8; + sfr[2] = tmp; // stb0899_write_regs(state, STB0899_SFRUPH, sfr_up, 3); stb0899_write_regs(state, STB0899_SFRH, sfr, 3); -- cgit v1.2.3 From 85eabac439ff6b60775e3d6458702dcb6c479e05 Mon Sep 17 00:00:00 2001 From: Manu Abraham Date: Fri, 25 Jan 2008 20:28:46 -0300 Subject: V4L/DVB (9453): stb0899: fix compilation warnings Cleanup/Optimization: * Fix compile warnings * The compile warnings helped to identify 2 unnecessary I/O operations Signed-off-by: Manu Abraham Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/stb0899_algo.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) (limited to 'drivers/media/dvb/frontends/stb0899_algo.c') diff --git a/drivers/media/dvb/frontends/stb0899_algo.c b/drivers/media/dvb/frontends/stb0899_algo.c index f1432cb29262..65bc032964b1 100644 --- a/drivers/media/dvb/frontends/stb0899_algo.c +++ b/drivers/media/dvb/frontends/stb0899_algo.c @@ -199,9 +199,7 @@ static enum stb0899_status stb0899_check_tmg(struct stb0899_state *state) msleep(internal->t_timing); - reg = stb0899_read_reg(state, STB0899_RTF); - STB0899_SETFIELD_VAL(RTF_TIMING_LOOP_FREQ, reg, 0xf2); - stb0899_write_reg(state, STB0899_RTF, reg); + 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); @@ -603,9 +601,7 @@ enum stb0899_status stb0899_dvbs_algo(struct stb0899_state *state) cfr[0] = cfr[1] = 0; stb0899_write_regs(state, STB0899_CFRM, cfr, 2); /* RESET derotator frequency */ - reg = stb0899_read_reg(state, STB0899_RTF); - STB0899_SETFIELD_VAL(RTF_TIMING_LOOP_FREQ, reg, 0); - stb0899_write_reg(state, STB0899_RTF, reg); + 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); -- cgit v1.2.3 From b359325d1e4a67942626421ea1f203b41adc9712 Mon Sep 17 00:00:00 2001 From: Manu Abraham Date: Fri, 25 Jan 2008 20:56:21 -0300 Subject: V4L/DVB (9455): Cleanup: remove some superfluous stuff and dead commented out code Signed-off-by: Manu Abraham Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/stb0899_algo.c | 36 +++++------------------------- 1 file changed, 5 insertions(+), 31 deletions(-) (limited to 'drivers/media/dvb/frontends/stb0899_algo.c') diff --git a/drivers/media/dvb/frontends/stb0899_algo.c b/drivers/media/dvb/frontends/stb0899_algo.c index 65bc032964b1..b7752473f7a7 100644 --- a/drivers/media/dvb/frontends/stb0899_algo.c +++ b/drivers/media/dvb/frontends/stb0899_algo.c @@ -73,20 +73,16 @@ u32 stb0899_get_srate(struct stb0899_state *state) */ static u32 stb0899_set_srate(struct stb0899_state *state, u32 master_clk, u32 srate) { - u32 tmp, tmp_up, srate_up; - u8 sfr_up[3], sfr[3]; + u32 tmp; + u8 sfr[3]; -// srate_up = srate; 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_up += (srate_up * 3) / 100; - - /* + * * srate = (SFR * master_clk) >> 20 * <=> * SFR = srate << 20 / master_clk @@ -97,40 +93,19 @@ static u32 stb0899_set_srate(struct stb0899_state *state, u32 master_clk, u32 sr * stored as 20 bit number with an offset of 4 bit: * sfr = SFR << 4; */ -// tmp_up = stb0899_do_div((((u64)srate_up) << 21) + master_clk, 2 * master_clk); -// tmp_up <<= 4; tmp = stb0899_do_div((((u64)srate) << 21) + master_clk, 2 * master_clk); tmp <<= 4; -// sfr_up[0] = tmp_up >> 16; -// sfr_up[1] = tmp_up >> 8; -// sfr_up[2] = tmp_up; - sfr[0] = tmp >> 16; sfr[1] = tmp >> 8; sfr[2] = tmp; -// stb0899_write_regs(state, STB0899_SFRUPH, sfr_up, 3); stb0899_write_regs(state, STB0899_SFRH, sfr, 3); return srate; } -/* - * stb0899_calc_loop_time - * Compute the amount of time needed by the timing loop to lock - * SymbolRate: Symbol rate - * return: timing loop time constant (ms) - */ -static long stb0899_calc_loop_time(long srate) -{ - if (srate > 0) - return (100000 / (srate / 1000)); - else - return 0; -} - /* * stb0899_calc_derot_time * Compute the amount of time needed by the derotator to lock @@ -197,7 +172,7 @@ static enum stb0899_status stb0899_check_tmg(struct stb0899_state *state) u8 reg; s8 timing; - msleep(internal->t_timing); + msleep(internal->t_derot); stb0899_write_reg(state, STB0899_RTF, 0xf2); reg = stb0899_read_reg(state, STB0899_TLIR); @@ -574,7 +549,6 @@ enum stb0899_status stb0899_dvbs_algo(struct stb0899_state *state) /* Initial calculations */ internal->derot_step = internal->derot_percent * (params->srate / 1000L) / internal->mclk; /* DerotStep/1000 * Fsymbol */ - internal->t_timing = stb0899_calc_loop_time(params->srate); internal->t_derot = stb0899_calc_derot_time(params->srate); internal->t_data = 500; @@ -617,7 +591,7 @@ enum stb0899_status stb0899_dvbs_algo(struct stb0899_state *state) if (state->config->tuner_get_frequency) state->config->tuner_get_frequency(&state->frontend, &internal->freq); - msleep(internal->t_agc1 + internal->t_agc2 + internal->t_timing); /* AGC1, AGC2 and timing loop */ + 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; -- cgit v1.2.3 From 40e8ce3dba8e9437ed48c88c268615dc0a4bebb2 Mon Sep 17 00:00:00 2001 From: Manu Abraham Date: Sun, 3 Feb 2008 19:37:02 -0300 Subject: V4L/DVB (9457): Optimization, Fix a Bug * cut down some I/O operations by disabling "disable gate" * budget_av was left with the gate open, thereby more susceptible to RF interference due to I/O operations Signed-off-by: Manu Abraham Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/stb0899_algo.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers/media/dvb/frontends/stb0899_algo.c') diff --git a/drivers/media/dvb/frontends/stb0899_algo.c b/drivers/media/dvb/frontends/stb0899_algo.c index b7752473f7a7..3cf9719204f2 100644 --- a/drivers/media/dvb/frontends/stb0899_algo.c +++ b/drivers/media/dvb/frontends/stb0899_algo.c @@ -583,6 +583,9 @@ enum stb0899_status stb0899_dvbs_algo(struct stb0899_state *state) 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) @@ -598,6 +601,10 @@ enum stb0899_status stb0899_dvbs_algo(struct stb0899_state *state) /* 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 @@ -1325,12 +1332,18 @@ enum stb0899_status stb0899_dvbs2_algo(struct stb0899_state *state) 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); -- cgit v1.2.3 From 9a286097b027081c073addc2c55775340704c683 Mon Sep 17 00:00:00 2001 From: Manu Abraham Date: Sat, 23 Feb 2008 18:02:45 -0300 Subject: V4L/DVB (9458): Bugfix: gate control needs to be handled Signed-off-by: Manu Abraham Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/stb0899_algo.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/media/dvb/frontends/stb0899_algo.c') diff --git a/drivers/media/dvb/frontends/stb0899_algo.c b/drivers/media/dvb/frontends/stb0899_algo.c index 3cf9719204f2..750e88c2c8e6 100644 --- a/drivers/media/dvb/frontends/stb0899_algo.c +++ b/drivers/media/dvb/frontends/stb0899_algo.c @@ -146,7 +146,9 @@ static void stb0899_first_subrange(struct stb0899_state *state) 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; } -- cgit v1.2.3 From 3f4009255bbcfcf55cf8ca40d70e4cf75e4dc68c Mon Sep 17 00:00:00 2001 From: Manu Abraham Date: Sun, 26 Oct 2008 18:28:52 -0300 Subject: V4L/DVB (9469): Port STB0899 and STB6100 Signed-off-by: Manu Abraham Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/stb0899_algo.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'drivers/media/dvb/frontends/stb0899_algo.c') diff --git a/drivers/media/dvb/frontends/stb0899_algo.c b/drivers/media/dvb/frontends/stb0899_algo.c index 750e88c2c8e6..ced9b7ae7d50 100644 --- a/drivers/media/dvb/frontends/stb0899_algo.c +++ b/drivers/media/dvb/frontends/stb0899_algo.c @@ -293,7 +293,7 @@ static enum stb0899_status stb0899_search_carrier(struct stb0899_state *state) 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 */ + derot_freq += index * internal->direction * internal->derot_step; /* next zig zag derotator position */ if(ABS(derot_freq) > derot_limit) next_loop--; @@ -309,11 +309,11 @@ static enum stb0899_status stb0899_search_carrier(struct stb0899_state *state) } } - internal->direction = -internal->direction; /* Change zigzag direction */ + 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 */ + 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 { @@ -396,7 +396,7 @@ static enum stb0899_status stb0899_search_data(struct stb0899_state *state) do { if ((internal->status != CARRIEROK) || (stb0899_check_data(state) != DATAOK)) { - derot_freq += index * internal->direction * derot_step; /* next zig zag derotator position */ + derot_freq += index * internal->direction * derot_step; /* next zig zag derotator position */ if (ABS(derot_freq) > derot_limit) next_loop--; @@ -414,11 +414,11 @@ static enum stb0899_status stb0899_search_data(struct stb0899_state *state) index++; } } - internal->direction = -internal->direction; /* change zig zag direction */ + 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 */ + 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); } @@ -568,12 +568,12 @@ enum stb0899_status stb0899_dvbs_algo(struct stb0899_state *state) 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_EQON, 0x01); /* Equalizer OFF while acquiring */ stb0899_write_reg(state, STB0899_VITSYNC, 0x19); stb0899_first_subrange(state); do { - /* Initialisations */ + /* Initialisations */ cfr[0] = cfr[1] = 0; stb0899_write_regs(state, STB0899_CFRM, cfr, 2); /* RESET derotator frequency */ @@ -588,7 +588,7 @@ enum stb0899_status stb0899_dvbs_algo(struct stb0899_state *state) /* enable tuner I/O */ stb0899_i2c_gate_ctrl(&state->frontend, 1); - /* Move tuner to frequency */ + /* 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); -- cgit v1.2.3