From patchwork Mon Dec 28 08:00:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hui Wang X-Patchwork-Id: 353985 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, 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 DF35CC433E0 for ; Mon, 28 Dec 2020 08:03:06 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 48C202242A for ; Mon, 28 Dec 2020 08:03:06 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 48C202242A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=canonical.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id CAFB91725; Mon, 28 Dec 2020 09:02:14 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz CAFB91725 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1609142584; bh=J3AKSXXQZPJEa2bAgKUXx0tOF3VNvxAV8kA6Za15L4s=; h=From:To:Subject:Date:In-Reply-To:References:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=fypgktF/MP8DcuAp0XRWUkNTg4uq3gCyutV4zL/NrobM3Ww+ar7Wkfs6UvsMkNZ3E 3LsppKBKaRX43F7hFQlXQ3y5KQN11PQyAwnEK+axYNX30fZHj+iUpQoUyqZYW45slI hQFY4/PCarEbfw4O8gYhzDdBm7MxqbP1L0EvAXho= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 7A2D5F804D2; Mon, 28 Dec 2020 09:00:35 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id A78AEF802A9; Mon, 28 Dec 2020 09:00:29 +0100 (CET) Received: from youngberry.canonical.com (youngberry.canonical.com [91.189.89.112]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 92BC5F804B0 for ; Mon, 28 Dec 2020 09:00:26 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 92BC5F804B0 Received: from [223.72.45.82] (helo=localhost.localdomain) by youngberry.canonical.com with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1ktnS5-0004UZ-8a; Mon, 28 Dec 2020 08:00:26 +0000 From: Hui Wang To: alsa-devel@alsa-project.org, tiwai@suse.de, perex@perex.cz, kai.vehmanen@linux.intel.com Subject: [RFC][PATCH v3 4/4] alsa: jack: implement save-and-restore for jack's hw status Date: Mon, 28 Dec 2020 16:00:03 +0800 Message-Id: <20201228080003.19127-5-hui.wang@canonical.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201228080003.19127-1-hui.wang@canonical.com> References: <20201228080003.19127-1-hui.wang@canonical.com> MIME-Version: 1.0 X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" Once we enable the sw_inject for a jack_kctl, the hw status change will be blocked, but the hw status still could be reported to snd_jack_report() and be saved to hw_status_cache. After the sw_inject is disabled, we use the last saved hw_status_cache to restore jack's status. Signed-off-by: Hui Wang --- include/sound/jack.h | 1 + sound/core/jack.c | 8 ++++++++ 2 files changed, 9 insertions(+) diff --git a/include/sound/jack.h b/include/sound/jack.h index 9eb2b5ec1ec4..1181f536557e 100644 --- a/include/sound/jack.h +++ b/include/sound/jack.h @@ -67,6 +67,7 @@ struct snd_jack { char name[100]; unsigned int key[6]; /* Keep in sync with definitions above */ #endif /* CONFIG_SND_JACK_INPUT_DEV */ + int hw_status_cache; void *private_data; void (*private_free)(struct snd_jack *); }; diff --git a/sound/core/jack.c b/sound/core/jack.c index 31c80883db2c..2c7fef94823d 100644 --- a/sound/core/jack.c +++ b/sound/core/jack.c @@ -193,8 +193,14 @@ static ssize_t sw_inject_enable_write(struct file *file, goto exit; } + if (jack_kctl->sw_inject_enable == (!!enable)) + goto exit; + jack_kctl->sw_inject_enable = !!enable; + if (!jack_kctl->sw_inject_enable) + snd_jack_report(jack_kctl->jack, jack_kctl->jack->hw_status_cache); + exit: kfree(buf); return ret; @@ -678,6 +684,8 @@ void snd_jack_report(struct snd_jack *jack, int status) if (!jack) return; + jack->hw_status_cache = status; + list_for_each_entry(jack_kctl, &jack->kctl_list, list) if (jack_kctl->sw_inject_enable) mask_bits |= jack_kctl->mask_bits;