From patchwork Tue Aug 6 00:55:16 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pierre-Louis Bossart X-Patchwork-Id: 11078037 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D347E18A6 for ; Tue, 6 Aug 2019 01:12:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C25A12884A for ; Tue, 6 Aug 2019 01:12:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B27372899B; Tue, 6 Aug 2019 01:12:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id CA08828971 for ; Tue, 6 Aug 2019 01:12:18 +0000 (UTC) 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 4747416C7; Tue, 6 Aug 2019 03:03:20 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 4747416C7 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1565053450; bh=GUECeIIcCspAc6JB5OIaNImyaa7LnGuohHLTWf1sRXA=; h=From:To:Date:In-Reply-To:References:Cc:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=Xd5xn4iQZAy2xII4w4l/wucjH2+3sV3kapiq9Cjs45oGVI59N1amwdCxFfimujjLO m47efmaV5XKGhNNLLSzyJMebWzyh3mJS6KgXzcYeY5fsb8nCqSgRvyGphWRICxymmp LtyohnRufjzyrA9HKP9tPgzz+WCJE5s6k31PNVnE= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 6DF49F80679; Tue, 6 Aug 2019 02:55:52 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa1.perex.cz (Postfix, from userid 50401) id E9CE2F8065D; Tue, 6 Aug 2019 02:55:48 +0200 (CEST) Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id EDC6FF80638 for ; Tue, 6 Aug 2019 02:55:45 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz EDC6FF80638 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 05 Aug 2019 17:55:45 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,350,1559545200"; d="scan'208";a="198153204" Received: from sahluwal-mobl1.amr.corp.intel.com (HELO pbossart-mobl3.intel.com) ([10.252.202.215]) by fmsmga004.fm.intel.com with ESMTP; 05 Aug 2019 17:55:44 -0700 From: Pierre-Louis Bossart To: alsa-devel@alsa-project.org Date: Mon, 5 Aug 2019 19:55:16 -0500 Message-Id: <20190806005522.22642-12-pierre-louis.bossart@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190806005522.22642-1-pierre-louis.bossart@linux.intel.com> References: <20190806005522.22642-1-pierre-louis.bossart@linux.intel.com> MIME-Version: 1.0 Cc: tiwai@suse.de, gregkh@linuxfoundation.org, Blauciak@alsa-project.org, linux-kernel@vger.kernel.org, Pierre-Louis Bossart , vkoul@kernel.org, broonie@kernel.org, srinivas.kandagatla@linaro.org, jank@cadence.com, Slawomir , Sanyog Kale Subject: [alsa-devel] [PATCH 11/17] soundwire: intel: read mclk_freq property from firmware 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" X-Virus-Scanned: ClamAV using ClamSMTP The BIOS provides an Intel-specific property, let's use it to avoid hard-coded clock dividers. Signed-off-by: Pierre-Louis Bossart --- drivers/soundwire/intel.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index fe3266bc1d12..3f876642cb7f 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -909,11 +909,37 @@ static int intel_register_dai(struct sdw_intel *sdw) dais, num_dai); } +static int sdw_master_read_intel_prop(struct sdw_bus *bus) +{ + struct sdw_master_prop *prop = &bus->prop; + struct fwnode_handle *link; + char name[32]; + int nval, i; + + /* Find master handle */ + snprintf(name, sizeof(name), + "mipi-sdw-link-%d-subproperties", bus->link_id); + + link = device_get_named_child_node(bus->dev, name); + if (!link) { + dev_err(bus->dev, "Master node %s not found\n", name); + return -EIO; + } + + fwnode_property_read_u32(link, + "intel-sdw-ip-clock", + &prop->mclk_freq); + return 0; +} + static int intel_prop_read(struct sdw_bus *bus) { /* Initialize with default handler to read all DisCo properties */ sdw_master_read_prop(bus); + /* read Intel-specific properties */ + sdw_master_read_intel_prop(bus); + return 0; }