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, 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 C2D67C0044D for ; Wed, 11 Mar 2020 22:10:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D33CC2074B for ; Wed, 11 Mar 2020 22:10:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731066AbgCKWK5 (ORCPT ); Wed, 11 Mar 2020 18:10:57 -0400 Received: from mga04.intel.com ([192.55.52.120]:59207 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729976AbgCKWKy (ORCPT ); Wed, 11 Mar 2020 18:10:54 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 11 Mar 2020 15:10:54 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,542,1574150400"; d="scan'208";a="277550619" Received: from fjan-mobl.amr.corp.intel.com (HELO pbossart-mobl3.amr.corp.intel.com) ([10.251.25.157]) by fmsmga002.fm.intel.com with ESMTP; 11 Mar 2020 15:10:52 -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 6/7] soundwire: intel: introduce a helper to arm link synchronization Date: Wed, 11 Mar 2020 17:10:25 -0500 Message-Id: <20200311221026.18174-7-pierre-louis.bossart@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200311221026.18174-1-pierre-louis.bossart@linux.intel.com> References: <20200311221026.18174-1-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 Move code from pre_bank_switch to dedicated helper, will be used in follow-up patches as recommended by programming flows. Signed-off-by: Pierre-Louis Bossart --- drivers/soundwire/intel.c | 26 ++++++++++++++++---------- 1 file changed, 16 insertions(+), 10 deletions(-) diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index 9c6514fe1284..93d157d04eb9 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -509,6 +509,21 @@ static int intel_link_power_down(struct sdw_intel *sdw) return 0; } +static void intel_shim_sync_arm(struct sdw_intel *sdw) +{ + void __iomem *shim = sdw->link_res->shim; + u32 sync_reg; + + mutex_lock(sdw->link_res->shim_lock); + + /* update SYNC register */ + sync_reg = intel_readl(shim, SDW_SHIM_SYNC); + sync_reg |= (SDW_SHIM_SYNC_CMDSYNC << sdw->instance); + intel_writel(shim, SDW_SHIM_SYNC, sync_reg); + + mutex_unlock(sdw->link_res->shim_lock); +} + /* * PDI routines */ @@ -722,21 +737,12 @@ static int intel_pre_bank_switch(struct sdw_bus *bus) { struct sdw_cdns *cdns = bus_to_cdns(bus); struct sdw_intel *sdw = cdns_to_intel(cdns); - void __iomem *shim = sdw->link_res->shim; - int sync_reg; /* Write to register only for multi-link */ if (!bus->multi_link) return 0; - mutex_lock(sdw->link_res->shim_lock); - - /* Read SYNC register */ - sync_reg = intel_readl(shim, SDW_SHIM_SYNC); - sync_reg |= SDW_SHIM_SYNC_CMDSYNC << sdw->instance; - intel_writel(shim, SDW_SHIM_SYNC, sync_reg); - - mutex_unlock(sdw->link_res->shim_lock); + intel_shim_sync_arm(sdw); return 0; } -- 2.20.1