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authorLu, Han <han.lu@intel.com>2015-06-09 16:50:38 +0800
committerTakashi Iwai <tiwai@suse.de>2015-06-09 11:58:37 +0200
commit2377c3c388815cd0a33309a6b6bb713600258a3e (patch)
treeda7b9b3a68af524d4d8c598c6ba6c8d59db097e9 /sound
parent8654844cf51d434dad5d4d9f48dc99d1ac89aad7 (diff)
downloadop-kernel-dev-2377c3c388815cd0a33309a6b6bb713600258a3e.zip
op-kernel-dev-2377c3c388815cd0a33309a6b6bb713600258a3e.tar.gz
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 <han.lu@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/pci/hda/hda_codec.c3
-rw-r--r--sound/pci/hda/hda_codec.h1
-rw-r--r--sound/pci/hda/patch_hdmi.c4
3 files changed, 8 insertions, 0 deletions
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();
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