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 43EC9C0650F for ; Tue, 6 Aug 2019 00:56:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1EBFD214C6 for ; Tue, 6 Aug 2019 00:56:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731521AbfHFA4O (ORCPT ); Mon, 5 Aug 2019 20:56:14 -0400 Received: from mga07.intel.com ([134.134.136.100]:35775 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731367AbfHFAzq (ORCPT ); Mon, 5 Aug 2019 20:55:46 -0400 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; 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 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, Blauciak@vger.kernel.org, Slawomir , Pierre-Louis Bossart , Sanyog Kale Subject: [PATCH 11/17] soundwire: intel: read mclk_freq property from firmware 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 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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; } -- 2.20.1