From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-wr0-f194.google.com ([209.85.128.194]:34498 "EHLO mail-wr0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751184AbdFYL0w (ORCPT ); Sun, 25 Jun 2017 07:26:52 -0400 Received: by mail-wr0-f194.google.com with SMTP id k67so23865372wrc.1 for ; Sun, 25 Jun 2017 04:26:52 -0700 (PDT) From: Daniel Scheller To: linux-media@vger.kernel.org, mchehab@kernel.org, mchehab@s-opensource.com Cc: liplianin@netup.ru, rjkm@metzlerbros.de, crope@iki.fi Subject: [PATCH v3 3/4] [media] dvb-frontends/stv0367: DVB-C signal strength statistics Date: Sun, 25 Jun 2017 13:26:45 +0200 Message-Id: <20170625112646.7973-4-d.scheller.oss@gmail.com> In-Reply-To: <20170625112646.7973-1-d.scheller.oss@gmail.com> References: <20170625112646.7973-1-d.scheller.oss@gmail.com> Sender: linux-media-owner@vger.kernel.org List-ID: From: Daniel Scheller Provide QAM/DVB-C signal strength in decibel scale. Values returned from stv0367cab_get_rf_lvl() are good but need to be multiplied as they're in 1dBm precision. Signed-off-by: Daniel Scheller --- drivers/media/dvb-frontends/stv0367.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/drivers/media/dvb-frontends/stv0367.c b/drivers/media/dvb-frontends/stv0367.c index 138f859d0f25..6097752a93bc 100644 --- a/drivers/media/dvb-frontends/stv0367.c +++ b/drivers/media/dvb-frontends/stv0367.c @@ -3011,6 +3011,25 @@ static int stv0367ddb_set_frontend(struct dvb_frontend *fe) return -EINVAL; } +static void stv0367ddb_read_signal_strength(struct dvb_frontend *fe) +{ + struct stv0367_state *state = fe->demodulator_priv; + struct dtv_frontend_properties *p = &fe->dtv_property_cache; + s32 signalstrength; + + switch (state->activedemod) { + case demod_cab: + signalstrength = stv0367cab_get_rf_lvl(state) * 1000; + break; + default: + p->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + return; + } + + p->strength.stat[0].scale = FE_SCALE_DECIBEL; + p->strength.stat[0].uvalue = signalstrength; +} + static void stv0367ddb_read_snr(struct dvb_frontend *fe) { struct stv0367_state *state = fe->demodulator_priv; @@ -3086,6 +3105,8 @@ static int stv0367ddb_read_status(struct dvb_frontend *fe, if (ret) return ret; + stv0367ddb_read_signal_strength(fe); + /* read carrier/noise when a carrier is detected */ if (*status & FE_HAS_CARRIER) stv0367ddb_read_snr(fe); -- 2.13.0