From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 68D1EC433E0 for ; Fri, 19 Jun 2020 14:48:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2E66A217D9 for ; Fri, 19 Jun 2020 14:48:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592578115; bh=2Q9Yr7e7ItrZAW0q4ARj2n/qHLvZhPdCDaCzDRgnIQQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ieXO+cS31F6pf5bvrzlTnEDHpmpK5ahW/7IBpUZMBYtZLRAD67xlL+76M/GOuFGzM dFXDbpfGrdGm/ujbzWX3KelWM83p1xCYqZWOzadx0GqCixEGma/fURNqYlXpJ46UXC JxWVLmrPymojMQxMHGwWE9++8WS33QRAfcXjV/74= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389085AbgFSOsc (ORCPT ); Fri, 19 Jun 2020 10:48:32 -0400 Received: from mail.kernel.org ([198.145.29.99]:40340 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389058AbgFSOsI (ORCPT ); Fri, 19 Jun 2020 10:48:08 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 048D02083B; Fri, 19 Jun 2020 14:48:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592578088; bh=2Q9Yr7e7ItrZAW0q4ARj2n/qHLvZhPdCDaCzDRgnIQQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MF1KGPc08ag4+VlATIxf4OdWep0RyyrXes5r5Go2WKgeWgK0ql1jLnWR4L/Hr+/dk Lj+KOGvsL2Xxaf7B3g0qWC2fU0YzUh15wRh3+vj88tMS+Xnlrqg7LcGHwNPC0QKw2G s58yCnoJsQk/enCs3Yu2Puxvp0JmTWtjSs16uvZ0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Brad Love , Sean Young , Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 4.14 078/190] media: si2157: Better check for running tuner in init Date: Fri, 19 Jun 2020 16:32:03 +0200 Message-Id: <20200619141637.487063922@linuxfoundation.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200619141633.446429600@linuxfoundation.org> References: <20200619141633.446429600@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Brad Love [ Upstream commit e955f959ac52e145f27ff2be9078b646d0352af0 ] Getting the Xtal trim property to check if running is less error prone. Reset if_frequency if state is unknown. Replaces the previous "garbage check". Signed-off-by: Brad Love Signed-off-by: Sean Young Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/tuners/si2157.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/drivers/media/tuners/si2157.c b/drivers/media/tuners/si2157.c index e35b1faf0ddc..c826997f5433 100644 --- a/drivers/media/tuners/si2157.c +++ b/drivers/media/tuners/si2157.c @@ -84,24 +84,23 @@ static int si2157_init(struct dvb_frontend *fe) struct si2157_cmd cmd; const struct firmware *fw; const char *fw_name; - unsigned int uitmp, chip_id; + unsigned int chip_id, xtal_trim; dev_dbg(&client->dev, "\n"); - /* Returned IF frequency is garbage when firmware is not running */ - memcpy(cmd.args, "\x15\x00\x06\x07", 4); + /* Try to get Xtal trim property, to verify tuner still running */ + memcpy(cmd.args, "\x15\x00\x04\x02", 4); cmd.wlen = 4; cmd.rlen = 4; ret = si2157_cmd_execute(client, &cmd); - if (ret) - goto err; - uitmp = cmd.args[2] << 0 | cmd.args[3] << 8; - dev_dbg(&client->dev, "if_frequency kHz=%u\n", uitmp); + xtal_trim = cmd.args[2] | (cmd.args[3] << 8); - if (uitmp == dev->if_frequency / 1000) + if (ret == 0 && xtal_trim < 16) goto warm; + dev->if_frequency = 0; /* we no longer know current tuner state */ + /* power up */ if (dev->chiptype == SI2157_CHIPTYPE_SI2146) { memcpy(cmd.args, "\xc0\x05\x01\x00\x00\x0b\x00\x00\x01", 9); -- 2.25.1