ALSA: hdac: add snd_hdac_ext_bus_link_power_up_all

We have an API for powering down all links, we need a similar one
for powering up links, so add for power up as well
Signed-off-by: Jayachandran B <jayachandran.b@intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

include/sound/hdaudio_ext.h

@@ -147,6 +147,7 @@ struct hdac_ext_link {
 
 int snd_hdac_ext_bus_link_power_up(struct hdac_ext_link *link);
 int snd_hdac_ext_bus_link_power_down(struct hdac_ext_link *link);
+int snd_hdac_ext_bus_link_power_up_all(struct hdac_ext_bus *ebus);
 int snd_hdac_ext_bus_link_power_down_all(struct hdac_ext_bus *ebus);
 void snd_hdac_ext_link_set_stream_id(struct hdac_ext_link *link,
 				 int stream);

sound/hda/ext/hdac_ext_controller.c

@@ -287,6 +287,27 @@ int snd_hdac_ext_bus_link_power_down(struct hdac_ext_link *link)
 }
 EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power_down);
 
+/**
+ * snd_hdac_ext_bus_link_power_up_all -power up all hda link
+ * @ebus: HD-audio extended bus
+ */
+int snd_hdac_ext_bus_link_power_up_all(struct hdac_ext_bus *ebus)
+{
+	struct hdac_ext_link *hlink = NULL;
+	int ret;
+
+	list_for_each_entry(hlink, &ebus->hlink_list, list) {
+		snd_hdac_updatel(hlink->ml_addr,
+				AZX_REG_ML_LCTL, 0, AZX_MLCTL_SPA);
+		ret = check_hdac_link_power_active(hlink, true);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power_up_all);
+
 /**
  * snd_hdac_ext_bus_link_power_down_all -power down all hda link
  * @ebus: HD-audio extended bus