X-Git-Url: http://git.osdn.net/view?a=blobdiff_plain;f=sound%2Fpci%2Fhda%2Fpatch_hdmi.c;h=e8d847819d7159d930f891813e00a3942d6f3276;hb=85abf3ec5fa663c9638ef2d10d9623880a26458e;hp=d925742624ee66784ec3f5af8bd3520dbcfc9133;hpb=49c4a4c5244d2c1a25ec1e01dbb4fba3813d237d;p=uclinux-h8%2Flinux.git

diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index d925742624ee..e8d847819d71 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -2335,6 +2335,15 @@ static int patch_generic_hdmi(struct hda_codec *codec)
 		intel_haswell_fixup_enable_dp12(codec);
 	}
 
+	/* For Valleyview/Cherryview, only the display codec is in the display
+	 * power well and can use link_power ops to request/release the power.
+	 * For Haswell/Broadwell, the controller is also in the power well and
+	 * 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))
+		codec->core.link_power_control = 1;
+
 	if (is_haswell_plus(codec) || is_valleyview_plus(codec))
 		codec->depop_delay = 0;