From patchwork Wed Nov 12 04:23:05 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antti Palosaari X-Patchwork-Id: 5284801 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 280B19F2ED for ; Wed, 12 Nov 2014 04:23:40 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 50C3C200E3 for ; Wed, 12 Nov 2014 04:23:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 75B6D20107 for ; Wed, 12 Nov 2014 04:23:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932270AbaKLEX1 (ORCPT ); Tue, 11 Nov 2014 23:23:27 -0500 Received: from mail.kapsi.fi ([217.30.184.167]:43032 "EHLO mail.kapsi.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756202AbaKLEXX (ORCPT ); Tue, 11 Nov 2014 23:23:23 -0500 Received: from dyn3-82-128-189-191.psoas.suomi.net ([82.128.189.191] helo=localhost.localdomain) by mail.kapsi.fi with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.72) (envelope-from ) id 1XoPSj-0003TB-Tj; Wed, 12 Nov 2014 06:23:21 +0200 From: Antti Palosaari To: linux-media@vger.kernel.org Cc: Antti Palosaari Subject: [PATCH 3/8] rtl28xxu: enable demod ADC only when needed Date: Wed, 12 Nov 2014 06:23:05 +0200 Message-Id: <1415766190-24482-4-git-send-email-crope@iki.fi> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1415766190-24482-1-git-send-email-crope@iki.fi> References: <1415766190-24482-1-git-send-email-crope@iki.fi> X-SA-Exim-Connect-IP: 82.128.189.191 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=-7.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, 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 Enable integrated demod ADC only when demod is used. Keep integrated demod ADC disabled when external demod is used. This fixes corrupted stream in a case external demod was used. Signed-off-by: Antti Palosaari --- drivers/media/usb/dvb-usb-v2/rtl28xxu.c | 37 ++++++++++++++++++++++----------- 1 file changed, 25 insertions(+), 12 deletions(-) diff --git a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c index 27b1e03..5ea52c7 100644 --- a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c +++ b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c @@ -1201,13 +1201,6 @@ static int rtl2832u_power_ctrl(struct dvb_usb_device *d, int onoff) if (ret) goto err; - mdelay(5); - - /* enable ADC */ - ret = rtl28xx_wr_reg_mask(d, SYS_DEMOD_CTL, 0x48, 0x48); - if (ret) - goto err; - /* streaming EP: clear stall & reset */ ret = rtl28xx_wr_regs(d, USB_EPA_CTL, "\x00\x00", 2); if (ret) @@ -1222,11 +1215,6 @@ static int rtl2832u_power_ctrl(struct dvb_usb_device *d, int onoff) if (ret) goto err; - /* disable ADC */ - ret = rtl28xx_wr_reg_mask(d, SYS_DEMOD_CTL, 0x00, 0x48); - if (ret) - goto err; - /* disable PLL */ ret = rtl28xx_wr_reg_mask(d, SYS_DEMOD_CTL, 0x00, 0x80); if (ret) @@ -1244,6 +1232,30 @@ err: return ret; } +static int rtl2832u_frontend_ctrl(struct dvb_frontend *fe, int onoff) +{ + struct dvb_usb_device *d = fe_to_d(fe); + int ret; + u8 val; + + dev_dbg(&d->udev->dev, "%s: fe=%d onoff=%d\n", __func__, fe->id, onoff); + + /* control internal demod ADC */ + if (fe->id == 0 && onoff) + val = 0x48; /* enable ADC */ + else + val = 0x00; /* disable ADC */ + + ret = rtl28xx_wr_reg_mask(d, SYS_DEMOD_CTL, val, 0x48); + if (ret) + goto err; + + return 0; +err: + dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret); + return ret; +} + #if IS_ENABLED(CONFIG_RC_CORE) static int rtl2831u_rc_query(struct dvb_usb_device *d) { @@ -1467,6 +1479,7 @@ static const struct dvb_usb_device_properties rtl2832u_props = { .size_of_priv = sizeof(struct rtl28xxu_priv), .power_ctrl = rtl2832u_power_ctrl, + .frontend_ctrl = rtl2832u_frontend_ctrl, .i2c_algo = &rtl28xxu_i2c_algo, .read_config = rtl2832u_read_config, .frontend_attach = rtl2832u_frontend_attach,