From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-wr0-f196.google.com ([209.85.128.196]:36596 "EHLO mail-wr0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751094AbdFTRpQ (ORCPT ); Tue, 20 Jun 2017 13:45:16 -0400 Received: by mail-wr0-f196.google.com with SMTP id 77so19156124wrb.3 for ; Tue, 20 Jun 2017 10:45:15 -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 Subject: [PATCH 4/4] [media] dvb-frontends/stv0367: DVB-C signal strength statistics Date: Tue, 20 Jun 2017 19:45:06 +0200 Message-Id: <20170620174506.7593-5-d.scheller.oss@gmail.com> In-Reply-To: <20170620174506.7593-1-d.scheller.oss@gmail.com> References: <20170620174506.7593-1-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 | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/media/dvb-frontends/stv0367.c b/drivers/media/dvb-frontends/stv0367.c index 0b13a407df23..cf684ba70a3f 100644 --- a/drivers/media/dvb-frontends/stv0367.c +++ b/drivers/media/dvb-frontends/stv0367.c @@ -3018,6 +3018,25 @@ static int stv0367ddb_read_status(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; @@ -3102,6 +3121,7 @@ static int stv0367ddb_get_frontend(struct dvb_frontend *fe, stv0367ddb_read_ucblocks(fe); stv0367ddb_read_snr(fe); + stv0367ddb_read_signal_strength(fe); return 0; } -- 2.13.0