From: "Lu, Han" han.lu@intel.com
For SKL, only the HDMI codec is in the display power well while the HD-A controller isn't. So the codec flag 'link_power_control' is set to request/release the display power via bus link_power ops. For BXT, the power well design is the same as SKL, so the patch should be applied to BXT too.
Signed-off-by: Lu, Han han.lu@intel.com
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index 309274b..aa68db6 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -2375,7 +2375,8 @@ static int patch_generic_hdmi(struct hda_codec *codec) * can cover the codec power request, and so need not set this flag. * For previous platforms, there is no such power well feature. */ - if (is_valleyview_plus(codec) || is_skylake(codec)) + if (is_valleyview_plus(codec) || is_skylake(codec) || + is_broxton(codec)) codec->core.link_power_control = 1;
if (is_haswell_plus(codec) || is_valleyview_plus(codec)) {