ALSA: hda - Implement snd_hda_power_sync() helper function
Added a new helper function snd_hda_power_sync() to trigger the
power-saving manually. It's an inline function call to
snd_hda_power_save() helper function.
Together with this addition, snd_hda_power_up*() and
snd_hda_power_down() functions are inlined to a call of the same
snd_hda_power_save() helper function.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index d772c25..1d4dfce 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -1062,16 +1062,64 @@
* power saving
*/
#ifdef CONFIG_SND_HDA_POWER_SAVE
-void snd_hda_power_up(struct hda_codec *codec);
-void snd_hda_power_up_d3wait(struct hda_codec *codec);
-void snd_hda_power_down(struct hda_codec *codec);
+void snd_hda_power_save(struct hda_codec *codec, int delta, bool d3wait);
void snd_hda_update_power_acct(struct hda_codec *codec);
#else
-static inline void snd_hda_power_up(struct hda_codec *codec) {}
-static inline void snd_hda_power_up_d3wait(struct hda_codec *codec) {}
-static inline void snd_hda_power_down(struct hda_codec *codec) {}
+static inline void snd_hda_power_save(struct hda_codec *codec, int delta,
+ bool d3wait) {}
#endif
+/**
+ * snd_hda_power_up - Power-up the codec
+ * @codec: HD-audio codec
+ *
+ * Increment the power-up counter and power up the hardware really when
+ * not turned on yet.
+ */
+static inline void snd_hda_power_up(struct hda_codec *codec)
+{
+ snd_hda_power_save(codec, 1, false);
+}
+
+/**
+ * snd_hda_power_up_d3wait - Power-up the codec after waiting for any pending
+ * D3 transition to complete. This differs from snd_hda_power_up() when
+ * power_transition == -1. snd_hda_power_up sees this case as a nop,
+ * snd_hda_power_up_d3wait waits for the D3 transition to complete then powers
+ * back up.
+ * @codec: HD-audio codec
+ *
+ * Cancel any power down operation hapenning on the work queue, then power up.
+ */
+static inline void snd_hda_power_up_d3wait(struct hda_codec *codec)
+{
+ snd_hda_power_save(codec, 1, true);
+}
+
+/**
+ * snd_hda_power_down - Power-down the codec
+ * @codec: HD-audio codec
+ *
+ * Decrement the power-up counter and schedules the power-off work if
+ * the counter rearches to zero.
+ */
+static inline void snd_hda_power_down(struct hda_codec *codec)
+{
+ snd_hda_power_save(codec, -1, false);
+}
+
+/**
+ * snd_hda_power_sync - Synchronize the power-save status
+ * @codec: HD-audio codec
+ *
+ * Synchronize the actual power state with the power account;
+ * called when power_save parameter is changed
+ */
+static inline void snd_hda_power_sync(struct hda_codec *codec)
+{
+ snd_hda_power_save(codec, 0, false);
+}
+
#ifdef CONFIG_SND_HDA_PATCH_LOADER
/*
* patch firmware