1 files changed, 46 insertions, 0 deletions

diff --git a/sound/pci/emu10k1/emumixer.c b/sound/pci/emu10k1/emumixer.c
index f34bbfb705f5..b0fb6c917c38 100644
--- a/sound/pci/emu10k1/emumixer.c
+++ b/sound/pci/emu10k1/emumixer.c
@@ -1639,6 +1639,45 @@ static struct snd_kcontrol_new snd_audigy_shared_spdif __devinitdata =
 	.put =		snd_emu10k1_shared_spdif_put
 };
 
+/* workaround for too low volume on Audigy due to 16bit/24bit conversion */
+
+#define snd_audigy_capture_boost_info	snd_ctl_boolean_mono_info
+
+static int snd_audigy_capture_boost_get(struct snd_kcontrol *kcontrol,
+					struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
+	unsigned int val;
+
+	/* FIXME: better to use a cached version */
+	val = snd_ac97_read(emu->ac97, AC97_REC_GAIN);
+	ucontrol->value.integer.value[0] = !!val;
+	return 0;
+}
+
+static int snd_audigy_capture_boost_put(struct snd_kcontrol *kcontrol,
+					struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
+	unsigned int val;
+
+	if (ucontrol->value.integer.value[0])
+		val = 0x0f0f;
+	else
+		val = 0;
+	return snd_ac97_update(emu->ac97, AC97_REC_GAIN, val);
+}
+
+static struct snd_kcontrol_new snd_audigy_capture_boost __devinitdata =
+{
+	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name =		"Analog Capture Boost",
+	.info =		snd_audigy_capture_boost_info,
+	.get =		snd_audigy_capture_boost_get,
+	.put =		snd_audigy_capture_boost_put
+};
+
+
 /*
  */
 static void snd_emu10k1_mixer_free_ac97(struct snd_ac97 *ac97)
@@ -2087,5 +2126,12 @@ int __devinit snd_emu10k1_mixer(struct snd_emu10k1 *emu,
 		}
 	}
 		
+	if (emu->card_capabilities->ac97_chip && emu->audigy) {
+		err = snd_ctl_add(card, snd_ctl_new1(&snd_audigy_capture_boost,
+						     emu));
+		if (err < 0)
+			return err;
+	}
+
 	return 0;
 }