From patchwork Mon Sep 16 19:09:51 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: 11147703 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 640171599 for ; Mon, 16 Sep 2019 19:13:56 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E9A37214AF for ; Mon, 16 Sep 2019 19:13:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="MBqQ2gIs" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E9A37214AF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=tempfail smtp.mailfrom=alsa-devel-bounces@alsa-project.org 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 2D697165D; Mon, 16 Sep 2019 21:13:04 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 2D697165D DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1568661234; bh=H2NIQ7KXm5QZ4oSaWpA/AqmG4croqIIrOQZg5X6zwL4=; h=From:To:Date:In-Reply-To:References:Cc:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=MBqQ2gIs/DlixWOG+4GOCwgfvPEvFLcpEx3hOH0ak/u3yBaTbS71haGEOW2RJIPvZ CPaTmw9z+DWbpXEcmU+JR4OGtPzUnWmdfrwDvggYYbS0NuA+j/uzmWLgeV2hiuNSYb zHRk9Es5kuypqhuhKex9EyvTGbIhVJ1X3CN6V5F8= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 414F6F805FF; Mon, 16 Sep 2019 21:10:16 +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 B13E9F805FC; Mon, 16 Sep 2019 21:10:12 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on alsa1.perex.cz X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=SPF_HELO_NONE,SPF_NONE, URIBL_BLOCKED autolearn=disabled version=3.4.0 Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) (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 5DFF9F805F7 for ; Mon, 16 Sep 2019 21:10:06 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 5DFF9F805F7 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 16 Sep 2019 12:10:06 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,513,1559545200"; d="scan'208";a="191161758" Received: from jvhicko1-mobl2.amr.corp.intel.com (HELO localhost.localdomain) ([10.254.104.227]) by orsmga006.jf.intel.com with ESMTP; 16 Sep 2019 12:10:05 -0700 From: Pierre-Louis Bossart To: alsa-devel@alsa-project.org Date: Mon, 16 Sep 2019 14:09:51 -0500 Message-Id: <20190916190952.32388-6-pierre-louis.bossart@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190916190952.32388-1-pierre-louis.bossart@linux.intel.com> References: <20190916190952.32388-1-pierre-louis.bossart@linux.intel.com> MIME-Version: 1.0 Cc: Pierre-Louis Bossart , tiwai@suse.de, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, Ranjani Sridharan , vkoul@kernel.org, broonie@kernel.org, srinivas.kandagatla@linaro.org, jank@cadence.com, slawomir.blauciak@intel.com, Sanyog Kale , Bard liao , Rander Wang Subject: [alsa-devel] [PATCH v2 5/5] soundwire: cadence_master: make clock stop exit configurable on init 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" The use of clock stop is not a requirement, the IP can e.g. be completely power gated and not detect any wakes while in s2idle/deep sleep. For now clock-stop is not supported anyways so the control parameter is always false. This will be revisited when we add clock stop. Signed-off-by: Pierre-Louis Bossart --- drivers/soundwire/cadence_master.c | 15 ++++++++------- drivers/soundwire/cadence_master.h | 2 +- drivers/soundwire/intel.c | 2 +- 3 files changed, 10 insertions(+), 9 deletions(-) diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index a71df99ca18f..06d83ad88d76 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -996,7 +996,7 @@ static u32 cdns_set_initial_frame_shape(int n_rows, int n_cols) * sdw_cdns_init() - Cadence initialization * @cdns: Cadence instance */ -int sdw_cdns_init(struct sdw_cdns *cdns) +int sdw_cdns_init(struct sdw_cdns *cdns, bool clock_stop_exit) { struct sdw_bus *bus = &cdns->bus; struct sdw_master_prop *prop = &bus->prop; @@ -1004,12 +1004,13 @@ int sdw_cdns_init(struct sdw_cdns *cdns) int divider; int ret; - /* Exit clock stop */ - ret = cdns_clear_bit(cdns, CDNS_MCP_CONTROL, - CDNS_MCP_CONTROL_CLK_STOP_CLR); - if (ret < 0) { - dev_err(cdns->dev, "Couldn't exit from clock stop\n"); - return ret; + if (clock_stop_exit) { + ret = cdns_clear_bit(cdns, CDNS_MCP_CONTROL, + CDNS_MCP_CONTROL_CLK_STOP_CLR); + if (ret < 0) { + dev_err(cdns->dev, "Couldn't exit from clock stop\n"); + return ret; + } } /* Set clock divider */ diff --git a/drivers/soundwire/cadence_master.h b/drivers/soundwire/cadence_master.h index 302351808098..9d7a48ac6fc4 100644 --- a/drivers/soundwire/cadence_master.h +++ b/drivers/soundwire/cadence_master.h @@ -158,7 +158,7 @@ extern struct sdw_master_ops sdw_cdns_master_ops; irqreturn_t sdw_cdns_irq(int irq, void *dev_id); irqreturn_t sdw_cdns_thread(int irq, void *dev_id); -int sdw_cdns_init(struct sdw_cdns *cdns); +int sdw_cdns_init(struct sdw_cdns *cdns, bool clock_stop_exit); int sdw_cdns_pdi_init(struct sdw_cdns *cdns, struct sdw_cdns_stream_config config); int sdw_cdns_exit_reset(struct sdw_cdns *cdns); diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index 08530c136c5f..2443b9b32b46 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -1000,7 +1000,7 @@ static int intel_init(struct sdw_intel *sdw) intel_link_power_up(sdw); intel_shim_init(sdw); - return sdw_cdns_init(&sdw->cdns); + return sdw_cdns_init(&sdw->cdns, false); } /*