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=-9.7 required=3.0 tests=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 A40A2C5DF63 for ; Wed, 6 Nov 2019 19:00:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8180520869 for ; Wed, 6 Nov 2019 19:00:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732132AbfKFTAt (ORCPT ); Wed, 6 Nov 2019 14:00:49 -0500 Received: from mga07.intel.com ([134.134.136.100]:5591 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726713AbfKFTAs (ORCPT ); Wed, 6 Nov 2019 14:00:48 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 06 Nov 2019 11:00:47 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,275,1569308400"; d="scan'208";a="227579997" Received: from ppaladu-mobl1.amr.corp.intel.com (HELO pbossart-mobl3.amr.corp.intel.com) ([10.255.230.49]) by fmsmga004.fm.intel.com with ESMTP; 06 Nov 2019 11:00:45 -0800 From: Pierre-Louis Bossart To: alsa-devel@alsa-project.org Cc: linux-kernel@vger.kernel.org, tiwai@suse.de, broonie@kernel.org, vkoul@kernel.org, gregkh@linuxfoundation.org, jank@cadence.com, srinivas.kandagatla@linaro.org, slawomir.blauciak@intel.com, Bard liao , Rander Wang , Ranjani Sridharan , Pierre-Louis Bossart , Sanyog Kale Subject: [PATCH v2 3/5] soundwire: add initialization_complete definition Date: Wed, 6 Nov 2019 13:00:32 -0600 Message-Id: <20191106190034.4619-4-pierre-louis.bossart@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191106190034.4619-1-pierre-louis.bossart@linux.intel.com> References: <20191106190034.4619-1-pierre-louis.bossart@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This helper is useful to make sure that the resume stages wait for the device to be fully initialized, not just enumerated. Depending on how initialization is handled, a Slave device driver may wait for enumeration_complete, or for initialization_complete, both are valid synchronization points. Signed-off-by: Pierre-Louis Bossart --- include/linux/soundwire/sdw.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h index 2c6688eb4c09..6d667224ae8f 100644 --- a/include/linux/soundwire/sdw.h +++ b/include/linux/soundwire/sdw.h @@ -552,6 +552,8 @@ struct sdw_slave_ops { * @enumeration_complete: completion utility to control potential races * on startup between device enumeration and read/write access to the * Slave device + * @initialization_complete: completion utility to control potential races + * on startup between device enumeration and settings being restored */ struct sdw_slave { struct sdw_slave_id id; @@ -569,6 +571,7 @@ struct sdw_slave { bool probed; struct completion probe_complete; struct completion enumeration_complete; + struct completion initialization_complete; }; #define dev_to_sdw_dev(_dev) container_of(_dev, struct sdw_slave, dev) -- 2.20.1