From patchwork Tue Dec 23 20:49:11 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antti Palosaari X-Patchwork-Id: 5535331 Return-Path: X-Original-To: patchwork-linux-media@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id B0FED9F326 for ; Tue, 23 Dec 2014 20:51:55 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DF6A720120 for ; Tue, 23 Dec 2014 20:51:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D6B57201BB for ; Tue, 23 Dec 2014 20:51:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756593AbaLWUvr (ORCPT ); Tue, 23 Dec 2014 15:51:47 -0500 Received: from mail.kapsi.fi ([217.30.184.167]:47099 "EHLO mail.kapsi.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756616AbaLWUu3 (ORCPT ); Tue, 23 Dec 2014 15:50:29 -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 1Y3WPU-0004tE-HQ; Tue, 23 Dec 2014 22:50:28 +0200 From: Antti Palosaari To: linux-media@vger.kernel.org Cc: Antti Palosaari Subject: [PATCH 18/66] rtl2830: wrap DVBv5 CNR to DVBv3 SNR Date: Tue, 23 Dec 2014 22:49:11 +0200 Message-Id: <1419367799-14263-18-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=unavailable 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 Change legacy DVBv3 read SNR to return values calculated by DVBv5 statistics. Signed-off-by: Antti Palosaari --- drivers/media/dvb-frontends/rtl2830.c | 44 ++---------------------------- drivers/media/dvb-frontends/rtl2830_priv.h | 1 + 2 files changed, 4 insertions(+), 41 deletions(-) diff --git a/drivers/media/dvb-frontends/rtl2830.c b/drivers/media/dvb-frontends/rtl2830.c index 0112b3f..f1f1cfb 100644 --- a/drivers/media/dvb-frontends/rtl2830.c +++ b/drivers/media/dvb-frontends/rtl2830.c @@ -544,52 +544,14 @@ err: static int rtl2830_read_snr(struct dvb_frontend *fe, u16 *snr) { - struct i2c_client *client = fe->demodulator_priv; - struct rtl2830_dev *dev = i2c_get_clientdata(client); - int ret, hierarchy, constellation; - u8 buf[2], tmp; - u16 tmp16; -#define CONSTELLATION_NUM 3 -#define HIERARCHY_NUM 4 - static const u32 snr_constant[CONSTELLATION_NUM][HIERARCHY_NUM] = { - {70705899, 70705899, 70705899, 70705899}, - {82433173, 82433173, 87483115, 94445660}, - {92888734, 92888734, 95487525, 99770748}, - }; - - if (dev->sleeping) - return 0; - - /* reports SNR in resolution of 0.1 dB */ - - ret = rtl2830_rd_reg(client, 0x33c, &tmp); - if (ret) - goto err; - - constellation = (tmp >> 2) & 0x03; /* [3:2] */ - if (constellation > CONSTELLATION_NUM - 1) - goto err; - - hierarchy = (tmp >> 4) & 0x07; /* [6:4] */ - if (hierarchy > HIERARCHY_NUM - 1) - goto err; - - ret = rtl2830_rd_regs(client, 0x40c, buf, 2); - if (ret) - goto err; - - tmp16 = buf[0] << 8 | buf[1]; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; - if (tmp16) - *snr = (snr_constant[constellation][hierarchy] - - intlog10(tmp16)) / ((1 << 24) / 100); + if (c->cnr.stat[0].scale == FE_SCALE_DECIBEL) + *snr = div_s64(c->cnr.stat[0].svalue, 100); else *snr = 0; return 0; -err: - dev_dbg(&client->dev, "failed=%d\n", ret); - return ret; } static int rtl2830_read_ber(struct dvb_frontend *fe, u32 *ber) diff --git a/drivers/media/dvb-frontends/rtl2830_priv.h b/drivers/media/dvb-frontends/rtl2830_priv.h index 6636834..6a0e982 100644 --- a/drivers/media/dvb-frontends/rtl2830_priv.h +++ b/drivers/media/dvb-frontends/rtl2830_priv.h @@ -22,6 +22,7 @@ #include "dvb_math.h" #include "rtl2830.h" #include +#include struct rtl2830_dev { struct rtl2830_platform_data *pdata;