From patchwork Thu Apr 16 13:22:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 227851 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=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 96C67C2BB55 for ; Thu, 16 Apr 2020 13:45:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 66F2F208E4 for ; Thu, 16 Apr 2020 13:45:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587044719; bh=1c08XC1B6rSTFGUlvN4qhU6O/IY9IRqHTGMA58kStOk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=jkIvMTZl8jZZmtMW3O4FdnDYaY4LmBCh+8ToQGKomxka1i7EMsx+cI68IzO78LKH2 JXuZoNiAMH93FwrSPTgR2j/eGUI9C+8NQps0nopf2VsVTWGvXqQqEgH81liCBm7B3S o4yUtB/jdu+sYDPKaGkPhTWC1we69IpUzhRBhZzM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2898488AbgDPNpN (ORCPT ); Thu, 16 Apr 2020 09:45:13 -0400 Received: from mail.kernel.org ([198.145.29.99]:58600 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2898484AbgDPNpL (ORCPT ); Thu, 16 Apr 2020 09:45:11 -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 602C720732; Thu, 16 Apr 2020 13:45:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587044710; bh=1c08XC1B6rSTFGUlvN4qhU6O/IY9IRqHTGMA58kStOk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Ohie3RPSQ61ivJx85zBI8rutV/fJsA+WcqYevpnDjaSoAY6DV1BH0zPFtFtAmkk6/ GGlbeHKYkA8CYIIg7iVu8omqHHVphZSn/YdF/ktLqC3CkMuF+/WwjEzstth0vBnU+A Kx3LIhl4w7wE8izg2vBh/oUkTcS4LWd2F48abNQA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Gyeongtaek Lee , Mark Brown Subject: [PATCH 5.4 070/232] ASoC: dapm: connect virtual mux with default value Date: Thu, 16 Apr 2020 15:22:44 +0200 Message-Id: <20200416131324.125466105@linuxfoundation.org> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200416131316.640996080@linuxfoundation.org> References: <20200416131316.640996080@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@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 @@ -802,7 +802,13 @@ 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; } }