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| author | Brad Love <brad@nextdimension.cc> | 2019-11-14 21:04:07 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-04-21 16:50:56 +0200 |
| commit | 722b3c140dd471ee484b072793addbb7e2cbd999 (patch) | |
| tree | 5013bb2b28dd894a5be832d7a8d249c6bcde6357 | |
| parent | d99846cb1c0ecba0856276da5b8c2368dd402623 (diff) | |
| download | lwn-722b3c140dd471ee484b072793addbb7e2cbd999.tar.gz lwn-722b3c140dd471ee484b072793addbb7e2cbd999.zip | |
media: lgdt3306a: Add CNR v5 stat
The CNR is already calculated, so populate DVBv5 CNR stat
during read_status.
Signed-off-by: Brad Love <brad@nextdimension.cc>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
| -rw-r--r-- | drivers/media/dvb-frontends/lgdt3306a.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/lgdt3306a.c b/drivers/media/dvb-frontends/lgdt3306a.c index 6c4adec58174..d3c330e035c4 100644 --- a/drivers/media/dvb-frontends/lgdt3306a.c +++ b/drivers/media/dvb-frontends/lgdt3306a.c @@ -846,6 +846,7 @@ static int lgdt3306a_fe_sleep(struct dvb_frontend *fe) static int lgdt3306a_init(struct dvb_frontend *fe) { struct lgdt3306a_state *state = fe->demodulator_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; u8 val; int ret; @@ -997,6 +998,9 @@ static int lgdt3306a_init(struct dvb_frontend *fe) ret = lgdt3306a_sleep(state); lg_chkerr(ret); + c->cnr.len = 1; + c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + fail: return ret; } @@ -1597,6 +1601,7 @@ static int lgdt3306a_read_status(struct dvb_frontend *fe, enum fe_status *status) { struct lgdt3306a_state *state = fe->demodulator_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; u16 strength = 0; int ret = 0; @@ -1637,6 +1642,15 @@ static int lgdt3306a_read_status(struct dvb_frontend *fe, default: ret = -EINVAL; } + + if (*status & FE_HAS_SYNC) { + c->cnr.len = 1; + c->cnr.stat[0].scale = FE_SCALE_DECIBEL; + c->cnr.stat[0].svalue = lgdt3306a_calculate_snr_x100(state) * 10; + } else { + c->cnr.len = 1; + c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } } return ret; } |