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Diffstat (limited to 'drivers/media/dvb/frontends/stb0899_algo.c')
-rw-r--r--drivers/media/dvb/frontends/stb0899_algo.c1525
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 117a56926dca..000000000000
--- 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;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-14 08:29:05 +0000