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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 D5F5BC55186 for ; Wed, 22 Apr 2020 10:05:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A8D7A20776 for ; Wed, 22 Apr 2020 10:05:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587549917; bh=0DWUuwUkdrloEV0hFiwpBzpoo2GAJjhrcF4xgwMpidY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=k04CfT2hn8QJvgzTPhsrcXM61TT1bBaIZXDVi+iomZPy9+kGGAKpv9QEgi1SwKzqp iGYtehD3QbrXAEieFbD7pJuY5agphSCsxovI2Qah1Bqh6yQ4nJMUWw3afvBOhjIR6/ Bu3bwhltTIutj3WJstXe/one40UtjFP/5DYRDUsA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728147AbgDVKFQ (ORCPT ); Wed, 22 Apr 2020 06:05:16 -0400 Received: from mail.kernel.org ([198.145.29.99]:56204 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726926AbgDVKFM (ORCPT ); Wed, 22 Apr 2020 06:05:12 -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 269BF20776; Wed, 22 Apr 2020 10:05:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587549911; bh=0DWUuwUkdrloEV0hFiwpBzpoo2GAJjhrcF4xgwMpidY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XaCKnhFFZBUP98NIWXKhcISDHEh3e3LoelYLtLSGHxIcvGD1bXCS98r1ta3nlD19w iBZfLBN0sonGcGmnZoXcI3CDujT8uSE41wjs4IkqNnBn/Qctfp2vJjuOJbOgi4+Owt DuUHAjIL14S0YGU0oW4MaVM0f+txYtAvQfbBZTVo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Gyeongtaek Lee , Mark Brown Subject: [PATCH 4.9 016/125] ASoC: dapm: connect virtual mux with default value Date: Wed, 22 Apr 2020 11:55:33 +0200 Message-Id: <20200422095035.795457027@linuxfoundation.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200422095032.909124119@linuxfoundation.org> References: <20200422095032.909124119@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: 이경택 commit 3bbbb7728fc853d71dbce4073fef9f281fbfb4dd upstream. Since a virtual mixer has no backing registers to decide which path to connect, it will try to match with initial state. This is to ensure that the default mixer choice will be correctly powered up during initialization. Invert flag is used to select initial state of the virtual switch. Since actual hardware can't be disconnected by virtual switch, connected is better choice as initial state in many cases. Signed-off-by: Gyeongtaek Lee Link: https://lore.kernel.org/r/01a301d60731$b724ea10$256ebe30$@samsung.com Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman --- sound/soc/soc-dapm.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -751,7 +751,13 @@ static void dapm_set_mixer_path_status(s val = max - val; p->connect = !!val; } else { - p->connect = 0; + /* since a virtual mixer has no backing registers to + * decide which path to connect, it will try to match + * with initial state. This is to ensure + * that the default mixer choice will be + * correctly powered up during initialization. + */ + p->connect = invert; } }