From: "Lu, Han" han.lu@intel.com
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 han.lu@intel.com
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();