From patchwork Thu Nov 19 20:03:56 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthias Schwarzott X-Patchwork-Id: 31960 Received: from mail.tu-berlin.de ([130.149.7.33]) by www.linuxtv.org with esmtp (Exim 4.72) (envelope-from ) id 1ZzVS1-0003Jw-9h; Thu, 19 Nov 2015 21:05:01 +0100 X-tubIT-Incoming-IP: 209.132.180.67 Received: from vger.kernel.org ([209.132.180.67]) by mail.tu-berlin.de (exim-4.76/mailfrontend-5) with esmtp id 1ZzVRz-0007Ka-7z; Thu, 19 Nov 2015 21:05:01 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161122AbbKSUE5 (ORCPT + 1 other); Thu, 19 Nov 2015 15:04:57 -0500 Received: from smtp.gentoo.org ([140.211.166.183]:54364 "EHLO smtp.gentoo.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161082AbbKSUE4 (ORCPT ); Thu, 19 Nov 2015 15:04:56 -0500 Received: from gauss.fritz.box (unknown [IPv6:2001:a62:10b0:8401:eeec:a250:c9d5:8d1e]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: zzam) by smtp.gentoo.org (Postfix) with ESMTPSA id 70C1A340928; Thu, 19 Nov 2015 20:04:55 +0000 (UTC) From: Matthias Schwarzott To: linux-media@vger.kernel.org Cc: mchehab@osg.samsung.com, crope@iki.fi, xpert-reactos@gmx.de, Matthias Schwarzott Subject: [PATCH 04/10] si2165: only write agc registers after reset before start_syncro Date: Thu, 19 Nov 2015 21:03:56 +0100 Message-Id: <1447963442-9764-5-git-send-email-zzam@gentoo.org> X-Mailer: git-send-email 2.6.3 In-Reply-To: <1447963442-9764-1-git-send-email-zzam@gentoo.org> References: <1447963442-9764-1-git-send-email-zzam@gentoo.org> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-PMX-Version: 6.0.0.2142326, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2015.11.19.195416 X-PMX-Spam: Gauge=IIIIIIII, Probability=8%, Report=' MULTIPLE_RCPTS 0.1, HTML_00_01 0.05, HTML_00_10 0.05, BODYTEXTP_SIZE_3000_LESS 0, BODY_SIZE_2000_2999 0, BODY_SIZE_5000_LESS 0, BODY_SIZE_7000_LESS 0, NO_URI_HTTPS 0, REFERENCES 0, SINGLE_URI_IN_BODY 0, URI_ENDS_IN_HTML 0, __ANY_URI 0, __CP_URI_IN_BODY 0, __HAS_FROM 0, __HAS_MSGID 0, __HAS_X_MAILER 0, __HAS_X_MAILING_LIST 0, __IN_REP_TO 0, __MIME_TEXT_ONLY 0, __MULTIPLE_RCPTS_CC_X2 0, __REFERENCES 0, __SANE_MSGID 0, __SINGLE_URI_TEXT 0, __TO_MALFORMED_2 0, __TO_NO_NAME 0, __URI_IN_BODY 0, __URI_NO_WWW 0, __URI_NS ' Datasheet says they must be rewritten after reset. But it only makes sense to write them when trying to tune afterwards. Signed-off-by: Matthias Schwarzott --- drivers/media/dvb-frontends/si2165.c | 32 +++++++++++++++----------------- 1 file changed, 15 insertions(+), 17 deletions(-) diff --git a/drivers/media/dvb-frontends/si2165.c b/drivers/media/dvb-frontends/si2165.c index 222d775..07247e3 100644 --- a/drivers/media/dvb-frontends/si2165.c +++ b/drivers/media/dvb-frontends/si2165.c @@ -690,23 +690,6 @@ static int si2165_init(struct dvb_frontend *fe) goto error; } - /* write adc values after each reset*/ - ret = si2165_writereg8(state, 0x012a, 0x46); - if (ret < 0) - goto error; - ret = si2165_writereg8(state, 0x012c, 0x00); - if (ret < 0) - goto error; - ret = si2165_writereg8(state, 0x012e, 0x0a); - if (ret < 0) - goto error; - ret = si2165_writereg8(state, 0x012f, 0xff); - if (ret < 0) - goto error; - ret = si2165_writereg8(state, 0x0123, 0x70); - if (ret < 0) - goto error; - return 0; error: return ret; @@ -788,6 +771,14 @@ static int si2165_set_if_freq_shift(struct si2165_state *state, u32 IF) return si2165_writereg32(state, 0x00e8, reg_value); } +static const struct si2165_reg_value_pair agc_rewrite[] = { + { 0x012a, 0x46 }, + { 0x012c, 0x00 }, + { 0x012e, 0x0a }, + { 0x012f, 0xff }, + { 0x0123, 0x70 } +}; + static int si2165_set_frontend(struct dvb_frontend *fe) { int ret; @@ -924,6 +915,13 @@ static int si2165_set_frontend(struct dvb_frontend *fe) ret = si2165_writereg32(state, 0x0384, 0x00000000); if (ret < 0) return ret; + + /* write adc values after each reset*/ + ret = si2165_write_reg_list(state, agc_rewrite, + ARRAY_SIZE(agc_rewrite)); + if (ret < 0) + return ret; + /* start_synchro */ ret = si2165_writereg8(state, 0x02e0, 0x01); if (ret < 0)