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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 70CA8C433E0 for ; Mon, 8 Jun 2020 23:33:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4555420823 for ; Mon, 8 Jun 2020 23:33:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591659184; bh=jIWMJy0Y8klCuejhD7uNt/cCKtnlVzy7LJ0nZ60RZzA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=MUL1Ij0ssfQJT78VKKvTYjEq3hFp0hl0Pw7E1pCYk+OqxvkDscJae33yjyeUeBrU2 wlbQTAdB6+wPNYeUyeMWYQ/z0BJKcj8pP3MFXCeMxlK8GQTZSiWTqQIJfsjoIMyag0 zw/17HOv34m5Xy4xlgda7G7qySydI+zFyJ1c+DUo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732210AbgFHXdC (ORCPT ); Mon, 8 Jun 2020 19:33:02 -0400 Received: from mail.kernel.org ([198.145.29.99]:54592 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731656AbgFHX0p (ORCPT ); Mon, 8 Jun 2020 19:26:45 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C24472074B; Mon, 8 Jun 2020 23:26:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591658804; bh=jIWMJy0Y8klCuejhD7uNt/cCKtnlVzy7LJ0nZ60RZzA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ivpd9Ayls0GI4DtkfO6MMwUXl5MKy9F5bGwwWH1XJw8N0bVls3yVIHciLlqmcQ3Dx zLSuwp+mDHCJgbM7nkwMNedmD5P9vH2IJV9SaUaCt65c1X8sMmgHkF1Js7wPCF7Xgl YAh6zmJAbOhFev8ZPHJOgLFAJIAste0P396TT/gw= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Brad Love , Sean Young , Mauro Carvalho Chehab , Sasha Levin , linux-media@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 03/50] media: si2157: Better check for running tuner in init Date: Mon, 8 Jun 2020 19:25:53 -0400 Message-Id: <20200608232640.3370262-3-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200608232640.3370262-1-sashal@kernel.org> References: <20200608232640.3370262-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore 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 57b250847cd3..72a47da0db2a 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