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wip: stv0910: Add blindscan mode 

Allow to use the AEP blind scan mode, which autodetects symbol rate
within a +/-25% range of the given symbol rate. Currently this is
enabled by using the lsb of symbol rate as a flag. This is hackish and
shall better be replaced by a dedicated dtv property.
This commit is contained in:
Julian Scheel 2017-07-27 17:56:42 +02:00 committed by Ralph Metzler
parent 06aecc3d66
commit 8521ce4753
1 changed files with 7 additions and 2 deletions
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9
frontends/stv0910.c
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@ -43,7 +43,7 @@
static LIST_HEAD(stvlist);
enum receive_mode { RCVMODE_NONE, RCVMODE_DVBS, RCVMODE_DVBS2, RCVMODE_AUTO };
enum ScanMode { ColdStart, BlindScan };
enum dvbs2_fec_type { DVBS2_64K, DVBS2_16K };
enum dvbs2_modcod {
@ -114,6 +114,7 @@ struct stv {
u32 first_time_lock;
u8 demod;
u32 symbol_rate;
enum ScanMode TuneMode;
enum fe_code_rate puncture_rate;
enum fe_stv0910_modcod modcod;
@ -1093,8 +1094,10 @@ static int start(struct stv *state, struct dtv_frontend_properties *p)
write_reg(state, RSTV0910_P2_CFRINIT0 + state->regoff, 0);
write_reg(state, RSTV0910_P2_DMDISTATE + state->regoff, 0x1F);
/* Trigger acq */
write_reg(state, RSTV0910_P2_DMDISTATE + state->regoff, 0x15);
write_reg(state, RSTV0910_P2_DMDISTATE + state->regoff,
state->TuneMode == BlindScan ? 0x00 : 0x15);
state->demod_lock_time += TUNING_DELAY;
state->started = 1;
@ -1249,6 +1252,8 @@ static int set_parameters(struct dvb_frontend *fe)
fe->ops.tuner_ops.set_params(fe);
if (fe->ops.tuner_ops.get_if_frequency)
fe->ops.tuner_ops.get_if_frequency(fe, &IF);
state->TuneMode = p->symbol_rate & 1 ? BlindScan : ColdStart;
p->symbol_rate &= ~(0x1);
state->symbol_rate = p->symbol_rate;
stat = start(state, p);
return stat;