From 2377c3c388815cd0a33309a6b6bb713600258a3e Mon Sep 17 00:00:00 2001 From: "Lu, Han" Date: Tue, 9 Jun 2015 16:50:38 +0800 Subject: [PATCH] ALSA: hda: Intel: enable automatic runtime pm for HDMI codecs by default 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 Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_codec.c | 3 +++ sound/pci/hda/hda_codec.h | 1 + sound/pci/hda/patch_hdmi.c | 4 ++++ 3 files changed, 8 insertions(+) diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 938ee4a..d702298 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -3496,6 +3496,9 @@ 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(); -- 2.7.4