From: han.lu@intel.com Subject: [PATCH-v2 1/1] HDA: Intel: enable automatic runtime pm for HDMI codecs by default Date: Tue, 9 Jun 2015 16:50:38 +0800 Message-ID: <1433839838-16893-1-git-send-email-han.lu@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by alsa0.perex.cz (Postfix) with ESMTP id D7CE52606CD for ; Tue, 9 Jun 2015 10:52:14 +0200 (CEST) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: tiwai@suse.de, daniel.vetter@intel.com Cc: "Lu, Han" , alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org From: "Lu, Han" Enable runtime PM of the HDMI audio codec on the latest Intel platforms. So the HD-A controller or HDMI codec can suspend when idle timeout by default and release the GFX power well. The patch influences HSW/BDW/BYT/BSW/SKL. Eariler platforms and third party analog codecs will not be influenced. Signed-off-by: Lu, Han diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 54380ed..e9f274b6 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -3495,6 +3495,9 @@ static void codec_set_power_save(struct hda_codec *codec, int delay) { struct device *dev = hda_codec_dev(codec); + if (delay == 0 && codec->auto_runtime_pm) + delay = 3000; + if (delay > 0) { pm_runtime_set_autosuspend_delay(dev, delay); pm_runtime_use_autosuspend(dev); diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h index 6c57258..12837ab 100644 --- a/sound/pci/hda/hda_codec.h +++ b/sound/pci/hda/hda_codec.h @@ -251,6 +251,7 @@ struct hda_codec { unsigned int dp_mst:1; /* support DP1.2 Multi-stream transport */ unsigned int dump_coef:1; /* dump processing coefs in codec proc file */ unsigned int power_save_node:1; /* advanced PM for each widget */ + unsigned int auto_runtime_pm:1; /* enable automatic codec runtime pm */ #ifdef CONFIG_PM unsigned long power_on_acct; unsigned long power_off_acct; diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index 407978b..f852734 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -2356,6 +2356,10 @@ static int patch_generic_hdmi(struct hda_codec *codec) codec->dp_mst = true; } + /* Enable runtime pm for HDMI audio codec of HSW/BDW/SKL/BYT/BSW */ + if (is_haswell_plus(codec) || is_valleyview_plus(codec)) + codec->auto_runtime_pm = 1; + generic_hdmi_init_per_pins(codec); init_channel_allocations(); -- 1.9.1