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add per demod lock for more fine-grained locking

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2021-03-18 10:44:11 +01:00
parent 4b0a0c4ff2
commit fc9a89c870
1 changed files with 62 additions and 50 deletions
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112
ddbridge/ddbridge-sx8.c
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@@ -56,6 +56,7 @@ struct sx8_base {
struct sx8 {
struct mci mci;
struct mutex lock;
int first_time_lock;
int started;
@@ -123,38 +124,45 @@ static int ddb_mci_tsconfig(struct mci *state, u32 config)
static int read_status(struct dvb_frontend *fe, enum fe_status *status)
{
int stat;
int stat = 0;
struct sx8 *state = fe->demodulator_priv;
struct mci_base *mci_base = state->mci.base;
struct sx8_base *sx8_base = (struct sx8_base *) mci_base;
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
struct mci_result res;
*status = 0x00;
mutex_lock(&state->lock);
if (!state->started && !state->iq_started)
goto unlock;
stat = ddb_mci_get_status(&state->mci, &res);
if (stat)
return stat;
if (sx8_base->iq_mode >= 2) {
*status = 0x1f;
return stat;
}
*status = 0x00;
goto unlock;
ddb_mci_get_info(&state->mci);
if (res.status == SX8_DEMOD_WAIT_MATYPE)
*status = 0x0f;
if (res.status == MCI_DEMOD_LOCKED) {
*status = 0x1f;
if (state->mci.signal_info.dvbs2_signal_info.standard == 2) {
if (stat)
goto unlock;
if (res.status == MCI_DEMOD_LOCKED || res.status == SX8_DEMOD_IQ_MODE) {
*status = FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI |
FE_HAS_CARRIER | FE_HAS_SIGNAL;
if (res.status == MCI_DEMOD_LOCKED) {
mutex_lock(&mci_base->tuner_lock);
if (state->started)
sx8_base->used_ldpc_bitrate[state->mci.nr] =
p->symbol_rate *
dvbs2_bits_per_symbol[
state->mci.signal_info.
dvbs2_signal_info.pls_code];
if (state->first_time_lock && state->started) {
if (state->mci.signal_info.dvbs2_signal_info.standard == 2) {
sx8_base->used_ldpc_bitrate[state->mci.nr] =
p->symbol_rate *
dvbs2_bits_per_symbol[
state->mci.signal_info.
dvbs2_signal_info.pls_code];
} else
sx8_base->used_ldpc_bitrate[state->mci.nr] = 0;
state->first_time_lock = 0;
}
mutex_unlock(&mci_base->tuner_lock);
} else
sx8_base->used_ldpc_bitrate[state->mci.nr] = 0;
}
}
else if (res.status >= SX8_DEMOD_WAIT_MATYPE)
*status = FE_HAS_SYNC | FE_HAS_VITERBI | FE_HAS_CARRIER | FE_HAS_SIGNAL;
unlock:
mutex_unlock(&state->lock);
return stat;
}
@@ -197,9 +205,9 @@ static int stop_iq(struct dvb_frontend *fe)
state->mci.demod = SX8_DEMOD_NONE;
}
sx8_base->used_ldpc_bitrate[state->mci.nr] = 0;
mutex_unlock(&mci_base->tuner_lock);
sx8_base->iq_mode = 0;
state->iq_started = 0;
mutex_unlock(&mci_base->tuner_lock);
return 0;
}
@@ -209,12 +217,13 @@ static int stop(struct dvb_frontend *fe)
struct mci_base *mci_base = state->mci.base;
struct sx8_base *sx8_base = (struct sx8_base *) mci_base;
struct mci_command cmd;
u32 input = state->mci.tuner;
u32 input;
input = state->mci.tuner;
if (!state->started)
return -1;
memset(&cmd, 0, sizeof(cmd));
if (state->mci.demod != SX8_DEMOD_NONE) {
memset(&cmd, 0, sizeof(cmd));
cmd.command = MCI_CMD_STOP;
cmd.demod = state->mci.demod;
ddb_mci_cmd(&state->mci, &cmd, NULL);
@@ -236,8 +245,8 @@ static int stop(struct dvb_frontend *fe)
}
sx8_base->used_ldpc_bitrate[state->mci.nr] = 0;
sx8_base->iq_mode = 0;
mutex_unlock(&mci_base->tuner_lock);
state->started = 0;
mutex_unlock(&mci_base->tuner_lock);
return 0;
}
@@ -308,16 +317,15 @@ static int start(struct dvb_frontend *fe, u32 flags, u32 modmask, u32 ts_config)
free_ldpc_bitrate = MAX_LDPC_BITRATE - used_ldpc_bitrate;
if (free_ldpc_bitrate > MAX_DEMOD_LDPC_BITRATE)
free_ldpc_bitrate = MAX_DEMOD_LDPC_BITRATE;
while (p->symbol_rate * bits_per_symbol > free_ldpc_bitrate)
bits_per_symbol--;
if (bits_per_symbol < 2) {
stat = -EBUSY;
goto unlock;
}
modmask &= ((1 << (bits_per_symbol - 1)) - 1);
if( ((flags & 0x02) != 0) && (modmask == 0)) {
if (((flags & 0x02) != 0) && (modmask == 0)) {
stat = -EBUSY;
goto unlock;
}
@@ -343,11 +351,10 @@ unlock:
if (stat)
return stat;
memset(&cmd, 0, sizeof(cmd));
if (sx8_base->iq_mode) {
cmd.command = SX8_CMD_ENABLE_IQOUTPUT;
cmd.demod = state->mci.demod;
cmd.output = p->stream_id & 7;
cmd.output = p->stream_id & 0x0f;
ddb_mci_cmd(&state->mci, &cmd, NULL);
ddb_mci_tsconfig(&state->mci, ts_config);
}
@@ -377,6 +384,9 @@ unlock:
(p->stream_id & 0x80000000))
cmd.output |= 0x80;
stat = ddb_mci_cmd(&state->mci, &cmd, NULL);
state->started = 1;
state->first_time_lock = 1;
state->mci.signal_info.status = MCI_DEMOD_WAIT_SIGNAL;
if (stat)
stop(fe);
return stat;
@@ -395,8 +405,8 @@ static int start_iq(struct dvb_frontend *fe, u32 flags,
u32 input = state->mci.tuner;
int i, stat = 0;
mutex_lock(&mci_base->tuner_lock);
if (!state->iq_started) {
mutex_lock(&mci_base->tuner_lock);
if (sx8_base->iq_mode) {
stat = -EBUSY;
goto unlock;
@@ -409,17 +419,18 @@ static int start_iq(struct dvb_frontend *fe, u32 flags,
goto unlock;
}
state->mci.demod = 0;
/*
if (!sx8_base->tuner_use_count[input])
mci_set_tuner(fe, input, 1);
*/
sx8_base->tuner_use_count[input]++;
sx8_base->iq_mode = 2;
unlock:
mutex_unlock(&mci_base->tuner_lock);
if (stat)
return stat;
} else {
if ((state->iq_started & 0x07) != state->mci.nr) {
stat = -EBUSY;
goto unlock;
}
}
unlock:
mutex_unlock(&mci_base->tuner_lock);
if (stat)
return stat;
mci_set_tuner(fe, input, 1, flags & 0xff, 0);
memset(&cmd, 0, sizeof(cmd));
cmd.command = SX8_CMD_START_IQ;
@@ -431,6 +442,9 @@ static int start_iq(struct dvb_frontend *fe, u32 flags,
cmd.tuner = state->mci.tuner;
cmd.demod = state->mci.demod;
stat = ddb_mci_cmd(&state->mci, &cmd, NULL);
state->iq_started = 8 | state->mci.nr;
state->first_time_lock = 1;
state->mci.signal_info.status = MCI_DEMOD_WAIT_SIGNAL;
if (stat)
stop_iq(fe);
ddb_mci_tsconfig(&state->mci, ts_config);
@@ -443,7 +457,6 @@ static int set_lna(struct dvb_frontend *fe)
return 0;
}
static int set_parameters(struct dvb_frontend *fe)
{
int stat = 0;
@@ -459,6 +472,7 @@ static int set_parameters(struct dvb_frontend *fe)
state->mci.input->con = ts_mode << 8;
if (iq_mode)
ts_config = (SX8_TSCONFIG_TSHEADER | SX8_TSCONFIG_MODE_IQ);
mutex_lock(&state->lock);
stop(fe);
if (iq_mode < 2) {
u32 mask;
@@ -485,19 +499,10 @@ static int set_parameters(struct dvb_frontend *fe)
break;
}
stat = start(fe, 3, mask, ts_config);
if (!stat) {
state->started = 1;
state->first_time_lock = 1;
state->mci.signal_info.status = MCI_DEMOD_WAIT_SIGNAL;
}
} else {
stat = start_iq(fe, isi & 0xffffff, 4, ts_config);
if (!stat) {
state->iq_started = 1;
state->first_time_lock = 1;
state->mci.signal_info.status = MCI_DEMOD_WAIT_SIGNAL;
}
}
mutex_unlock(&state->lock);
return stat;
}
@@ -536,16 +541,22 @@ static int set_input(struct dvb_frontend *fe, int input)
return -EINVAL;
if (state->mci.tuner == input)
return 0;
mutex_lock(&state->lock);
stop_iq(fe);
stop(fe);
state->mci.tuner = p->input = input;
mutex_unlock(&state->lock);
return 0;
}
static int sleep(struct dvb_frontend *fe)
{
struct sx8 *state = fe->demodulator_priv;
mutex_lock(&state->lock);
stop_iq(fe);
stop(fe);
mutex_unlock(&state->lock);
return 0;
}
@@ -591,6 +602,7 @@ static int init(struct mci *mci)
state->mci.demod = SX8_DEMOD_NONE;
mci->fe.ops.xbar[1] = mci->nr;
mci->fe.dtv_property_cache.input = mci->tuner;
mutex_init(&state->lock);
return 0;
}