From patchwork Mon Aug 17 10:40:00 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Yang, Libin" X-Patchwork-Id: 7024411 Return-Path: X-Original-To: patchwork-alsa-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 48CD1C05AC for ; Mon, 17 Aug 2015 10:51:14 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 678C5205FD for ; Mon, 17 Aug 2015 10:51:13 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id 37E2B205E5 for ; Mon, 17 Aug 2015 10:51:12 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id 45C92261586; Mon, 17 Aug 2015 12:51:11 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_LOW, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from alsa0.perex.cz (localhost [IPv6:::1]) by alsa0.perex.cz (Postfix) with ESMTP id 32E5C260702; Mon, 17 Aug 2015 12:50:14 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 9BB5B2606EE; Mon, 17 Aug 2015 12:50:12 +0200 (CEST) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by alsa0.perex.cz (Postfix) with ESMTP id 7B165260676 for ; Mon, 17 Aug 2015 12:50:04 +0200 (CEST) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga103.fm.intel.com with ESMTP; 17 Aug 2015 03:50:03 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,694,1432623600"; d="scan'208";a="785203996" Received: from younglee-grantley.sh.intel.com ([10.239.159.49]) by fmsmga002.fm.intel.com with ESMTP; 17 Aug 2015 03:50:02 -0700 From: libin.yang@intel.com To: alsa-devel@alsa-project.org, tiwai@suse.de, intel-gfx@lists.freedesktop.org, daniel.vetter@ffwll.ch, jani.nikula@linux.intel.com Date: Mon, 17 Aug 2015 18:40:00 +0800 Message-Id: <1439808001-132727-3-git-send-email-libin.yang@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1439808001-132727-1-git-send-email-libin.yang@intel.com> References: <1439808001-132727-1-git-send-email-libin.yang@intel.com> Cc: Libin Yang Subject: [alsa-devel] [PATCH v3 3/4] ALSA: hda - display audio call sync_audio_rate callback X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 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-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP From: Libin Yang For display audio, call the sync_audio_rate callback function to do the synchronization between gfx driver and audio driver. Signed-off-by: Libin Yang --- sound/pci/hda/patch_hdmi.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index a97db5f..1668868 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1770,6 +1770,16 @@ static bool check_non_pcm_per_cvt(struct hda_codec *codec, hda_nid_t cvt_nid) return non_pcm; } +/* There is a fixed mapping between audio pin node and display port + * on current Intel platforms: + * Pin Widget 5 - PORT B (port = 1 in i915 driver) + * Pin Widget 6 - PORT C (port = 2 in i915 driver) + * Pin Widget 7 - PORT D (port = 3 in i915 driver) + */ +static int intel_pin2port(hda_nid_t pin_nid) +{ + return pin_nid - 4; +} /* * HDMI callbacks @@ -1786,6 +1796,8 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, int pin_idx = hinfo_to_pin_index(codec, hinfo); struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx); hda_nid_t pin_nid = per_pin->pin_nid; + struct snd_pcm_runtime *runtime = substream->runtime; + struct i915_audio_component *acomp = codec->bus->core.audio_component; bool non_pcm; int pinctl; @@ -1802,6 +1814,13 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, intel_not_share_assigned_cvt(codec, pin_nid, per_pin->mux_idx); } + /* Call sync_audio_rate to set the N/CTS/M manually if necessary */ + /* Todo: add DP1.2 MST audio support later */ + if (acomp && acomp->ops && acomp->ops->sync_audio_rate) + acomp->ops->sync_audio_rate(acomp->dev, + intel_pin2port(pin_nid), + runtime->rate); + non_pcm = check_non_pcm_per_cvt(codec, cvt_nid); mutex_lock(&per_pin->lock); per_pin->channels = substream->runtime->channels;