[alsa-devel] [PATCH 13/31] HDA patch_via.c: Refresh front playback mute if hp plug-in mutes speaker.

[Li Bo]

[ALSA] HDA VIA: Refresh front playback mute if hp plug-in mutes speaker.

Signed-off-by: Lydia Wang <lydiawang at viatech.com.cn>

Index: sound-2.6/sound/pci/hda/patch_via.c
===================================================================
--- sound-2.6.orig/sound/pci/hda/patch_via.c	2009-10-05 15:10:13.000000000 +0800
+++ sound-2.6/sound/pci/hda/patch_via.c	2009-10-05 15:10:22.000000000 +0800
@@ -1346,14 +1346,26 @@
 /* mute internal speaker if HP is plugged */
 static void via_hp_automute(struct hda_codec *codec)
 {
-	unsigned int present;
+	unsigned int present = 0;
 	struct via_spec *spec = codec->spec;
+	char name[32] = "Front Playback Switch";

 	present = snd_hda_codec_read(codec, spec->autocfg.hp_pins[0], 0,
 				     AC_VERB_GET_PIN_SENSE, 0) & 0x80000000;
-	snd_hda_codec_amp_stereo(codec, spec->autocfg.line_out_pins[0],
-				 HDA_OUTPUT, 0, HDA_AMP_MUTE,
-				 present ? HDA_AMP_MUTE : 0);
+
+	if (!spec->hp_independent_mode) {
+		struct snd_card *card = codec->bus->card;
+		struct snd_kcontrol *kctl;
+		/* auto mute */
+		snd_hda_codec_amp_stereo(
+			codec, spec->autocfg.line_out_pins[0], HDA_OUTPUT, 0,
+			HDA_AMP_MUTE, present ? HDA_AMP_MUTE : 0);
+		/* notify change */
+		list_for_each_entry(kctl, &card->controls, list)
+			if (strcmp(kctl->id.name, name) == 0)
+				snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE,
+					       &kctl->id);
+	}
 }

 static void via_gpio_control(struct hda_codec *codec)