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=-6.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS, UNWANTED_LANGUAGE_BODY,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 876E1C5ACC7 for ; Tue, 20 Nov 2018 21:37:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0E60A2148E for ; Tue, 20 Nov 2018 21:37:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0E60A2148E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726837AbeKUIIL (ORCPT ); Wed, 21 Nov 2018 03:08:11 -0500 Received: from mga17.intel.com ([192.55.52.151]:35018 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726098AbeKUIIK (ORCPT ); Wed, 21 Nov 2018 03:08:10 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 20 Nov 2018 13:36:58 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,258,1539673200"; d="scan'208";a="281632610" Received: from pmvancle-mobl.amr.corp.intel.com (HELO pbossart-mobl3.intel.com) ([10.254.10.84]) by fmsmga005.fm.intel.com with ESMTP; 20 Nov 2018 13:36:57 -0800 From: Pierre-Louis Bossart To: alsa-devel@alsa-project.org Cc: tiwai@suse.de, broonie@kernel.org, vkoul@kernel.org, liam.r.girdwood@linux.intel.com, andriy.shevchenko@linux.intel.com, arnd@arndb.de, linux-kernel@vger.kernel.org, Pierre-Louis Bossart Subject: [RFC PATCH 2/6] ASoC: Intel: Skylake: stop init/probe if DSP is not present Date: Tue, 20 Nov 2018 15:36:40 -0600 Message-Id: <20181120213644.19103-3-pierre-louis.bossart@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181120213644.19103-1-pierre-louis.bossart@linux.intel.com> References: <20181120213644.19103-1-pierre-louis.bossart@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Check immediately if the DSP can be found, bail and avoid doing inits to enable legacy fallback without delay. Signed-off-by: Pierre-Louis Bossart --- sound/soc/intel/skylake/skl.c | 26 +++++++++++++++++--------- 1 file changed, 17 insertions(+), 9 deletions(-) diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c index df36b8fe6d5e..1d7146773d19 100644 --- a/sound/soc/intel/skylake/skl.c +++ b/sound/soc/intel/skylake/skl.c @@ -931,6 +931,12 @@ static int skl_first_init(struct hdac_bus *bus) snd_hdac_bus_parse_capabilities(bus); + /* check if dsp is there */ + if (!bus->ppcap) { + dev_err(bus->dev, "bus ppcap not set, DSP not present?\n"); + return -ENODEV; + } + if (skl_acquire_irq(bus, 0) < 0) return -EBUSY; @@ -940,23 +946,25 @@ static int skl_first_init(struct hdac_bus *bus) gcap = snd_hdac_chip_readw(bus, GCAP); dev_dbg(bus->dev, "chipset global capabilities = 0x%x\n", gcap); - /* allow 64bit DMA address if supported by H/W */ - if (!dma_set_mask(bus->dev, DMA_BIT_MASK(64))) { - dma_set_coherent_mask(bus->dev, DMA_BIT_MASK(64)); - } else { - dma_set_mask(bus->dev, DMA_BIT_MASK(32)); - dma_set_coherent_mask(bus->dev, DMA_BIT_MASK(32)); - } - /* read number of streams from GCAP register */ cp_streams = (gcap >> 8) & 0x0f; pb_streams = (gcap >> 12) & 0x0f; - if (!pb_streams && !cp_streams) + if (!pb_streams && !cp_streams) { + dev_err(bus->dev, "no streams found in GCAP definitions?\n"); return -EIO; + } bus->num_streams = cp_streams + pb_streams; + /* allow 64bit DMA address if supported by H/W */ + if (!dma_set_mask(bus->dev, DMA_BIT_MASK(64))) { + dma_set_coherent_mask(bus->dev, DMA_BIT_MASK(64)); + } else { + dma_set_mask(bus->dev, DMA_BIT_MASK(32)); + dma_set_coherent_mask(bus->dev, DMA_BIT_MASK(32)); + } + /* initialize streams */ snd_hdac_ext_stream_init_all (bus, 0, cp_streams, SNDRV_PCM_STREAM_CAPTURE); -- 2.17.1