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=-11.2 required=3.0 tests=BAYES_00,DATE_IN_PAST_06_12, 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 20FB8C433DF for ; Tue, 18 Aug 2020 03:23:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 08B1920716 for ; Tue, 18 Aug 2020 03:23:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726758AbgHRDXf (ORCPT ); Mon, 17 Aug 2020 23:23:35 -0400 Received: from mga03.intel.com ([134.134.136.65]:63987 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726728AbgHRDX3 (ORCPT ); Mon, 17 Aug 2020 23:23:29 -0400 IronPort-SDR: mjHNUd56EF24PH2V4L9jacoQ1flO0ZoP9bgHKJG13H+8MIeRCYOJZk5enjHgcY/9FmSaZPNYIK ST93X50WwIkw== X-IronPort-AV: E=McAfee;i="6000,8403,9716"; a="154806481" X-IronPort-AV: E=Sophos;i="5.76,325,1592895600"; d="scan'208";a="154806481" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Aug 2020 20:23:28 -0700 IronPort-SDR: 7lviDtFcctncIe1LaCVudtXIv5Kt5cIeFEAq1qjEQyLA8i1YSIzVe/QfMJwRL5lkjInXmdRCT6 lxAnRRXSgJgQ== X-IronPort-AV: E=Sophos;i="5.76,325,1592895600"; d="scan'208";a="441084575" Received: from bard-ubuntu.sh.intel.com ([10.239.13.33]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Aug 2020 20:23:25 -0700 From: Bard Liao To: alsa-devel@alsa-project.org, vkoul@kernel.org Cc: vinod.koul@linaro.org, linux-kernel@vger.kernel.org, tiwai@suse.de, broonie@kernel.org, gregkh@linuxfoundation.org, jank@cadence.com, srinivas.kandagatla@linaro.org, rander.wang@linux.intel.com, ranjani.sridharan@linux.intel.com, hui.wang@canonical.com, pierre-louis.bossart@linux.intel.com, sanyog.r.kale@intel.com, mengdong.lin@intel.com, bard.liao@intel.com Subject: [PATCH v2 04/12] soundwire: intel: call helper to reset Slave states on resume Date: Mon, 17 Aug 2020 23:29:15 +0800 Message-Id: <20200817152923.3259-5-yung-chuan.liao@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200817152923.3259-1-yung-chuan.liao@linux.intel.com> References: <20200817152923.3259-1-yung-chuan.liao@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Pierre-Louis Bossart This helps make sure they are all UNATTACHED and reset the state machines. At the moment we perform a bus reset both for system resume and pm_runtime resume, this will be modified when clock-stop mode is supported Signed-off-by: Pierre-Louis Bossart Signed-off-by: Bard Liao --- drivers/soundwire/intel.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index 00c5de1250ec..10dd0e208ce7 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -1516,6 +1516,12 @@ static int intel_resume(struct device *dev) return ret; } + /* + * make sure all Slaves are tagged as UNATTACHED and provide + * reason for reinitialization + */ + sdw_clear_slave_status(bus, SDW_UNATTACH_REQUEST_MASTER_RESET); + ret = sdw_cdns_enable_interrupt(cdns, true); if (ret < 0) { dev_err(dev, "cannot enable interrupts during resume\n"); @@ -1562,6 +1568,12 @@ static int intel_resume_runtime(struct device *dev) return ret; } + /* + * make sure all Slaves are tagged as UNATTACHED and provide + * reason for reinitialization + */ + sdw_clear_slave_status(bus, SDW_UNATTACH_REQUEST_MASTER_RESET); + ret = sdw_cdns_enable_interrupt(cdns, true); if (ret < 0) { dev_err(dev, "cannot enable interrupts during resume\n"); -- 2.17.1