From patchwork Tue Dec 23 20:49:28 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antti Palosaari X-Patchwork-Id: 5534971 Return-Path: X-Original-To: patchwork-linux-media@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 32BD0BEEBA for ; Tue, 23 Dec 2014 20:50:47 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6DAC0201B9 for ; Tue, 23 Dec 2014 20:50:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 325E32012D for ; Tue, 23 Dec 2014 20:50:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756662AbaLWUug (ORCPT ); Tue, 23 Dec 2014 15:50:36 -0500 Received: from mail.kapsi.fi ([217.30.184.167]:38818 "EHLO mail.kapsi.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753526AbaLWUud (ORCPT ); Tue, 23 Dec 2014 15:50:33 -0500 Received: from dyn3-82-128-190-202.psoas.suomi.net ([82.128.190.202] helo=localhost.localdomain.localdomain) by mail.kapsi.fi with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.72) (envelope-from ) id 1Y3WPX-0004tE-Sm; Tue, 23 Dec 2014 22:50:31 +0200 From: Antti Palosaari To: linux-media@vger.kernel.org Cc: Antti Palosaari Subject: [PATCH 35/66] rtl2832: implement DVBv5 signal strength statistics Date: Tue, 23 Dec 2014 22:49:28 +0200 Message-Id: <1419367799-14263-35-git-send-email-crope@iki.fi> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1419367799-14263-1-git-send-email-crope@iki.fi> References: <1419367799-14263-1-git-send-email-crope@iki.fi> X-SA-Exim-Connect-IP: 82.128.190.202 X-SA-Exim-Mail-From: crope@iki.fi X-SA-Exim-Scanned: No (on mail.kapsi.fi); SAEximRunCond expanded to false Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Estimate signal strength from IF digital AGC. Signed-off-by: Antti Palosaari --- drivers/media/dvb-frontends/rtl2832.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/media/dvb-frontends/rtl2832.c b/drivers/media/dvb-frontends/rtl2832.c index 531099b..39c8f34 100644 --- a/drivers/media/dvb-frontends/rtl2832.c +++ b/drivers/media/dvb-frontends/rtl2832.c @@ -474,6 +474,8 @@ static int rtl2832_init(struct dvb_frontend *fe) goto err; #endif /* init stats here in order signal app which stats are supported */ + c->strength.len = 1; + c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; c->cnr.len = 1; c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; c->post_bit_error.len = 1; @@ -823,6 +825,24 @@ static void rtl2832_stat_work(struct work_struct *work) dev_dbg(&client->dev, "\n"); + /* signal strength */ + if (dev->fe_status & FE_HAS_SIGNAL) { + /* read digital AGC */ + ret = rtl2832_bulk_read(client, 0x305, &u8tmp, 1); + if (ret) + goto err; + + dev_dbg(&client->dev, "digital agc=%02x", u8tmp); + + u8tmp = ~u8tmp; + u16tmp = u8tmp << 8 | u8tmp << 0; + + c->strength.stat[0].scale = FE_SCALE_RELATIVE; + c->strength.stat[0].uvalue = u16tmp; + } else { + c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + /* CNR */ if (dev->fe_status & FE_HAS_VITERBI) { unsigned hierarchy, constellation;