af9015: fix SNR report in Enigma2/Kaffeine; SNR is now scaled in the full 0-65536 range; the snrdb module parameter of the af9013 demodulator enables the SNR output in dBx10 as before. From: Gianluca Gennari --- drivers/media/dvb-frontends/af9013.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/media/dvb-frontends/af9013.c b/drivers/media/dvb-frontends/af9013.c index a204f28..1295487 100644 --- a/drivers/media/dvb-frontends/af9013.c +++ b/drivers/media/dvb-frontends/af9013.c @@ -24,6 +24,10 @@ #include "af9013_priv.h" +int af9013_snrdb; +module_param_named(snrdb, af9013_snrdb, int, 0644); +MODULE_PARM_DESC(snrdb, "Turn on/off SNR output as dBx10 (default:off)."); + struct af9013_state { struct i2c_adapter *i2c; struct dvb_frontend fe; @@ -471,6 +475,9 @@ static int af9013_statistics_snr_result(struct dvb_frontend *fe) } state->snr = tmp * 10; /* dB/10 */ + if (!af9013_snrdb) + state->snr = (0xffff / (snr_lut[len - 1].snr * 10)) * state->snr; + return ret; err: dev_dbg(&state->i2c->dev, "%s: failed=%d\n", __func__, ret); -- 1.7.9.5