[alsa-devel] Regression on alsa-driver-1.0.18a on HDA for Dell Inspiron 1521

[Takashi Iwai]

At Wed, 12 Nov 2008 12:28:03 -0200,
Manuel Naranjo wrote:
> 
> 
> >> Ohh btw, 1.0.18a connects the hardwar beeper, which can only be disabled 
> >> at compile time, just as a suggestion, isn't there any way to create a 
> >> way to mute this on runtime? For advanced users like us this is no 
> >> trouble, but for newbies this is an issue, and might scare them, the 
> >> beep on a dell laptop is quite annoying (you can't image how annoying 
> >> it's comming out of the headphones)
> >>     
> >
> > Don't you have "PC Beep" mixer control?
> >
> >
> > Takashi
> >   
> I do have it, but there's no mute option. And even at the lowest level 
> option it keeps beeping at a very loud level.

OK, then there should be a software switch.
Could you try the patch below?  Apply it on alsa-kernel via -p2 patch
option.


Takashi

diff --git a/sound/pci/hda/hda_beep.c b/sound/pci/hda/hda_beep.c
index 9b77b3e..b1796ae 100644
--- a/sound/pci/hda/hda_beep.c
+++ b/sound/pci/hda/hda_beep.c
@@ -37,6 +37,9 @@ static void snd_hda_generate_beep(struct work_struct *work)
 		container_of(work, struct hda_beep, beep_work);
 	struct hda_codec *codec = beep->codec;
 
+	if (!beep->enabled)
+		return;
+
 	/* generate tone */
 	snd_hda_codec_write_cache(codec, beep->nid, 0,
 			AC_VERB_SET_BEEP_CONTROL, beep->tone);
@@ -115,6 +118,7 @@ int snd_hda_attach_beep_device(struct hda_codec *codec, int nid)
 	beep->nid = nid;
 	beep->dev = input_dev;
 	beep->codec = codec;
+	beep->enabled = 1;
 	codec->beep = beep;
 
 	INIT_WORK(&beep->beep_work, &snd_hda_generate_beep);
diff --git a/sound/pci/hda/hda_beep.h b/sound/pci/hda/hda_beep.h
index de4036e..b9679f0 100644
--- a/sound/pci/hda/hda_beep.h
+++ b/sound/pci/hda/hda_beep.h
@@ -31,6 +31,7 @@ struct hda_beep {
 	char phys[32];
 	int tone;
 	int nid;
+	int enabled;
 	struct work_struct beep_work; /* scheduled task for beep event */
 };
 
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index ec8f5ab..a150330 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -2608,8 +2608,10 @@ static struct snd_kcontrol_new stac92xx_control_templates[] = {
 };
 
 /* add dynamic controls */
-static int stac92xx_add_control_idx(struct sigmatel_spec *spec, int type,
-		int idx, const char *name, unsigned long val)
+static int stac92xx_add_control_temp(struct sigmatel_spec *spec,
+				     struct snd_kcontrol_new *ktemp,
+				     int idx, const char *name,
+				     unsigned long val)
 {
 	struct snd_kcontrol_new *knew;
 
@@ -2617,19 +2619,28 @@ static int stac92xx_add_control_idx(struct sigmatel_spec *spec, int type,
 	knew = snd_array_new(&spec->kctls);
 	if (!knew)
 		return -ENOMEM;
-	*knew = stac92xx_control_templates[type];
+	*knew = *ktemp;
 	knew->index = idx;
 	knew->name = kstrdup(name, GFP_KERNEL);
-	if (! knew->name)
+	if (!knew->name)
 		return -ENOMEM;
 	knew->private_value = val;
 	return 0;
 }
 
+static inline int stac92xx_add_control_idx(struct sigmatel_spec *spec,
+					   int type, int idx, const char *name,
+					   unsigned long val)
+{
+	return stac92xx_add_control_temp(spec,
+					 &stac92xx_control_templates[type],
+					 idx, name, val);
+}
+
 
 /* add dynamic controls */
-static int stac92xx_add_control(struct sigmatel_spec *spec, int type,
-		const char *name, unsigned long val)
+static inline int stac92xx_add_control(struct sigmatel_spec *spec, int type,
+				       const char *name, unsigned long val)
 {
 	return stac92xx_add_control_idx(spec, type, 0, name, val);
 }
@@ -3071,6 +3082,44 @@ static int stac92xx_auto_create_beep_ctls(struct hda_codec *codec,
 	return 0;
 }
 
+#ifdef CONFIG_SND_HDA_INPUT_BEEP
+#define stac92xx_dig_beep_switch_info snd_ctl_boolean_mono_info
+
+static int stac92xx_dig_beep_switch_get(struct snd_kcontrol *kcontrol,
+					struct snd_ctl_elem_value *ucontrol)
+{
+	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+	ucontrol->value.integer.value[0] = codec->beep->enabled;
+	return 0;
+}
+
+static int stac92xx_dig_beep_switch_put(struct snd_kcontrol *kcontrol,
+					struct snd_ctl_elem_value *ucontrol)
+{
+	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+	int enabled = !!ucontrol->value.integer.value[0];
+	if (codec->beep->enabled != enabled) {
+		codec->beep->enabled = enabled;
+		return 1;
+	}
+	return 0;
+}
+
+static struct snd_kcontrol_new stac92xx_dig_beep_ctrl = {
+	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name = "PC Bepp Playback Switch",
+	.info = stac92xx_dig_beep_switch_info,
+	.get = stac92xx_dig_beep_switch_get,
+	.put = stac92xx_dig_beep_switch_put,
+};
+
+static int stac92xx_beep_switch_ctl(struct hda_codec *codec)
+{
+	return stac92xx_add_control_temp(codec->spec, &stac92xx_dig_beep_ctrl,
+					 0, "PC Beep Playback Volume", 0);
+}
+#endif
+
 static int stac92xx_auto_create_mux_input_ctls(struct hda_codec *codec)
 {
 	struct sigmatel_spec *spec = codec->spec;
@@ -3377,6 +3426,7 @@ static int stac92xx_parse_auto_config(struct hda_codec *codec, hda_nid_t dig_out
 #ifdef CONFIG_SND_HDA_INPUT_BEEP
 	if (spec->digbeep_nid > 0) {
 		hda_nid_t nid = spec->digbeep_nid;
+		unsigned int caps;
 
 		err = stac92xx_auto_create_beep_ctls(codec, nid);
 		if (err < 0)
@@ -3384,6 +3434,14 @@ static int stac92xx_parse_auto_config(struct hda_codec *codec, hda_nid_t dig_out
 		err = snd_hda_attach_beep_device(codec, nid);
 		if (err < 0)
 			return err;
+		/* if no beep switch is available, make its own one */
+		caps = query_amp_caps(codec, nid, HDA_OUTPUT);
+		if (codec->beep &&
+		    !((caps & AC_AMPCAP_MUTE) >> AC_AMPCAP_MUTE_SHIFT)) {
+			err = stac92xx_beep_switch_ctl(codec);
+			if (err < 0)
+				return err;
+		}
 	}
 #endif