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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 1E0FCC18E5B for ; Tue, 17 Mar 2020 16:34:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F329A2073E for ; Tue, 17 Mar 2020 16:34:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726968AbgCQQes (ORCPT ); Tue, 17 Mar 2020 12:34:48 -0400 Received: from mga06.intel.com ([134.134.136.31]:47605 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726924AbgCQQer (ORCPT ); Tue, 17 Mar 2020 12:34:47 -0400 IronPort-SDR: zpESST9LheqCZHtruq1nhKpOr/8F10hngymCesxzbSDmd09hyGpIDVxEEPw4Vxa/Imt5nwoak5 4tj0+Rdb7aeg== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Mar 2020 09:34:47 -0700 IronPort-SDR: rYLJdD8Lfn0sRTjyE23iMPSlkpLUdMlt2AMfxyFk826PXDnCR79DMoGweMOmlVOuGl2FpzUoLW bH5pwYQD3byg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,565,1574150400"; d="scan'208";a="244533314" Received: from aavila-mobl1.amr.corp.intel.com (HELO pbossart-mobl3.amr.corp.intel.com) ([10.255.36.39]) by orsmga003.jf.intel.com with ESMTP; 17 Mar 2020 09:34:44 -0700 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 , Hui Wang , Pierre-Louis Bossart , Sanyog Kale Subject: [PATCH v2 16/17] soundwire: cadence: multi-link support Date: Tue, 17 Mar 2020 11:33:28 -0500 Message-Id: <20200317163329.25501-17-pierre-louis.bossart@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200317163329.25501-1-pierre-louis.bossart@linux.intel.com> References: <20200317163329.25501-1-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 Enable multi-link (aka multi-master configuration). In this configuration, updates and commands with the 'ssp_sync' tag will be deferred and controlled by the gsync hardware signal. Signed-off-by: Pierre-Louis Bossart --- drivers/soundwire/cadence_master.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index 55cf219cc908..eedc4cefdab0 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -843,7 +843,13 @@ int sdw_cdns_exit_reset(struct sdw_cdns *cdns) CDNS_MCP_CONTROL_HW_RST); /* commit changes */ - return cdns_config_update(cdns); + cdns_updatel(cdns, CDNS_MCP_CONFIG_UPDATE, + CDNS_MCP_CONFIG_UPDATE_BIT, + CDNS_MCP_CONFIG_UPDATE_BIT); + + /* don't wait here */ + return 0; + } EXPORT_SYMBOL(sdw_cdns_exit_reset); @@ -1104,7 +1110,9 @@ int sdw_cdns_init(struct sdw_cdns *cdns) /* Disable auto bus release */ val &= ~CDNS_MCP_CONFIG_BUS_REL; - /* Multi-master support to be added here */ + if (cdns->bus.multi_link) + /* Set Multi-master mode to take gsync into account */ + val |= CDNS_MCP_CONFIG_MMASTER; /* leave frame delay to hardware default of 0x1F */ -- 2.20.1