From patchwork Thu Sep 12 14:21:52 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kai Vehmanen X-Patchwork-Id: 11143213 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 766B0912 for ; Thu, 12 Sep 2019 14:24:04 +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 05CE22081B for ; Thu, 12 Sep 2019 14:24:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="rM3flNLi" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 05CE22081B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass 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 DA9D9174F; Thu, 12 Sep 2019 16:23:10 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz DA9D9174F DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1568298240; bh=tdJ7GQHZP3Iij6ezMDvppOXsLdOMUaxrwzyiN/bPu0c=; h=From:To:Date:In-Reply-To:References:Cc:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=rM3flNLiZ95Qden+qxq85lmdnr5t5xjGzLhu/q2Nw1zSvKp6VRw0XL0jIqk1ygrjd c57zvyYjLAyC3pzppD/cGsNkWfcwoJJ+sxr92Yy99s1H3NvqIdAbs7D7QMoFc7QTPG 1LSgow+WKGd9KEV7qEBTqR60PkmtHylM27Am3aJA= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 958C2F80508; Thu, 12 Sep 2019 16:22:18 +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 0211BF80508; Thu, 12 Sep 2019 16:22:16 +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=0.1 required=5.0 tests=PRX_BODY_72,SPF_HELO_NONE, SPF_NONE,URIBL_BLOCKED autolearn=disabled version=3.4.0 Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) (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 87D74F802DF for ; Thu, 12 Sep 2019 16:22:13 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 87D74F802DF X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 12 Sep 2019 07:22:13 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,492,1559545200"; d="scan'208";a="190008182" Received: from zeliteleevi.tm.intel.com ([10.237.55.130]) by orsmga006.jf.intel.com with ESMTP; 12 Sep 2019 07:22:11 -0700 From: Kai Vehmanen To: alsa-devel@alsa-project.org, tiwai@suse.de Date: Thu, 12 Sep 2019 17:21:52 +0300 Message-Id: <20190912142200.8031-2-kai.vehmanen@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190912142200.8031-1-kai.vehmanen@linux.intel.com> References: <20190912142200.8031-1-kai.vehmanen@linux.intel.com> Cc: libin.yang@intel.com, pierre-louis.bossart@linux.intel.com, kai.vehmanen@linux.intel.com Subject: [alsa-devel] [PATCH v4 1/9] ALSA: hda/hdmi - implement mst_no_extra_pcms flag 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: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" To support the DP-MST multiple streams via single connector feature, the HDMI driver was extended with the concept of backup PCMs. See commit 9152085defb6 ("ALSA: hda - add DP MST audio support"). This implementation works fine with snd_hda_intel.c as PCM topology is fully managed within the single driver. When the HDA codec driver is used from ASoC components, the concept of backup PCMs no longer fits. For ASoC topologies, the physical HDMI converters are presented as backend DAIs and these should match with hardware capabilities. The ASoC topology may define arbitrary PCMs (i.e. frontend DAIs) and have processing elements before eventual routing to the HDMI BE DAIs. With backup PCMs, the link between FE and BE DAIs would become dynamic and change when monitors are (un)plugged. This would lead to modifying the topology every time hotplug events happen, which is not currently possible in ASoC and there does not seem to be any obvious benefits from this design. To overcome above problems and enable the HDMI driver to be used from ASoC, this patch adds a new mode (mst_no_extra_pcms flags) to patch_hdmi.c. In this mode, the codec driver does not assume the backup PCMs to be created. Signed-off-by: Kai Vehmanen Reviewed-by: Takashi Iwai --- include/sound/hda_codec.h | 1 + sound/pci/hda/patch_hdmi.c | 19 ++++++++++++++----- 2 files changed, 15 insertions(+), 5 deletions(-) diff --git a/include/sound/hda_codec.h b/include/sound/hda_codec.h index 9a0393cf024c..ac18f428eda6 100644 --- a/include/sound/hda_codec.h +++ b/include/sound/hda_codec.h @@ -254,6 +254,7 @@ struct hda_codec { unsigned int force_pin_prefix:1; /* Add location prefix */ unsigned int link_down_at_suspend:1; /* link down at runtime suspend */ unsigned int relaxed_resume:1; /* don't resume forcibly for jack */ + unsigned int mst_no_extra_pcms:1; /* no backup PCMs for DP-MST */ #ifdef CONFIG_PM unsigned long power_on_acct; diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index bca5de78e9ad..59aaee4a40fd 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -2072,15 +2072,24 @@ static bool is_hdmi_pcm_attached(struct hdac_device *hdac, int pcm_idx) static int generic_hdmi_build_pcms(struct hda_codec *codec) { struct hdmi_spec *spec = codec->spec; - int idx; + int idx, pcm_num; /* * for non-mst mode, pcm number is the same as before - * for DP MST mode, pcm number is (nid number + dev_num - 1) - * dev_num is the device entry number in a pin - * + * for DP MST mode without extra PCM, pcm number is same + * for DP MST mode with extra PCMs, pcm number is + * (nid number + dev_num - 1) + * dev_num is the device entry number in a pin */ - for (idx = 0; idx < spec->num_nids + spec->dev_num - 1; idx++) { + + if (codec->mst_no_extra_pcms) + pcm_num = spec->num_nids; + else + pcm_num = spec->num_nids + spec->dev_num - 1; + + codec_dbg(codec, "hdmi: pcm_num set to %d\n", pcm_num); + + for (idx = 0; idx < pcm_num; idx++) { struct hda_pcm *info; struct hda_pcm_stream *pstr;