ALSA: hda - Adjust power of beep widget and outputs

As the widget PM may turn off the pins, this might lead to the silent
output for beep when no explicit paths are given.  This patch adds
fake output paths for the beep widget so that the output pins are
dynamically powered upon beep on/off.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 16 insertions, 13 deletions

diff --git a/sound/pci/hda/hda_beep.c b/sound/pci/hda/hda_beep.c
index 581b7fdef0e3..4cdac3a71cae 100644
--- a/sound/pci/hda/hda_beep.c
+++ b/sound/pci/hda/hda_beep.c
@@ -33,30 +33,36 @@ enum {
 	DIGBEEP_HZ_MAX = 12000000,	/* 12 KHz */
 };
 
-static void snd_hda_generate_beep(struct work_struct *work)
+/* generate or stop tone */
+static void generate_tone(struct hda_beep *beep, int tone)
 {
-	struct hda_beep *beep =
-		container_of(work, struct hda_beep, beep_work);
 	struct hda_codec *codec = beep->codec;
-	int tone;
 
-	if (!beep->enabled)
-		return;
-
-	tone = beep->tone;
 	if (tone && !beep->playing) {
 		snd_hda_power_up(codec);
+		if (beep->power_hook)
+			beep->power_hook(beep, true);
 		beep->playing = 1;
 	}
-	/* generate tone */
 	snd_hda_codec_write(codec, beep->nid, 0,
 			    AC_VERB_SET_BEEP_CONTROL, tone);
 	if (!tone && beep->playing) {
 		beep->playing = 0;
+		if (beep->power_hook)
+			beep->power_hook(beep, false);
 		snd_hda_power_down(codec);
 	}
 }
 
+static void snd_hda_generate_beep(struct work_struct *work)
+{
+	struct hda_beep *beep =
+		container_of(work, struct hda_beep, beep_work);
+
+	if (beep->enabled)
+		generate_tone(beep, beep->tone);
+}
+
 /* (non-standard) Linear beep tone calculation for IDT/STAC codecs 
  *
  * The tone frequency of beep generator on IDT/STAC codecs is
@@ -130,10 +136,7 @@ static void turn_off_beep(struct hda_beep *beep)
 	cancel_work_sync(&beep->beep_work);
 	if (beep->playing) {
 		/* turn off beep */
-		snd_hda_codec_write(beep->codec, beep->nid, 0,
-				    AC_VERB_SET_BEEP_CONTROL, 0);
-		beep->playing = 0;
-		snd_hda_power_down(beep->codec);
+		generate_tone(beep, 0);
 	}
 }