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path: root/drivers/media/dvb-frontends/lgdt3306a.c
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Diffstat (limited to 'drivers/media/dvb-frontends/lgdt3306a.c')
-rw-r--r--drivers/media/dvb-frontends/lgdt3306a.c14
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;
}