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ALSA: hda: Intel: enable automatic runtime pm for HDMI codecs by default

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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>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Lu, Han 2015-06-09 16:50:38 +08:00 committed by Takashi Iwai
parent 8654844cf5
commit 2377c3c388
3 changed files with 8 additions and 0 deletions
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3
sound/pci/hda/hda_codec.c
View file

@ -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);

1
sound/pci/hda/hda_codec.h
View file

@ -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;

4
sound/pci/hda/patch_hdmi.c
View file

@ -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();