3 files changed, 17 insertions, 6 deletions

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 053f827d2c2c..8c933c8006f4 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -1831,6 +1831,7 @@ int snd_hda_mixer_amp_tlv(struct snd_kcontrol *kcontrol, int op_flag,
         hda_nid_t nid = get_amp_nid(kcontrol);
         int dir = get_amp_direction(kcontrol);
         unsigned int ofs = get_amp_offset(kcontrol);
+        bool min_mute = get_amp_min_mute(kcontrol);
         u32 caps, val1, val2;
 
         if (size < 4 * sizeof(unsigned int))
@@ -1841,6 +1842,8 @@ int snd_hda_mixer_amp_tlv(struct snd_kcontrol *kcontrol, int op_flag,
         val1 = -((caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT);
         val1 += ofs;
         val1 = ((int)val1) * ((int)val2);
+        if (min_mute)
+                val2 |= 0x10000;
         if (put_user(SNDRV_CTL_TLVT_DB_SCALE, _tlv))
                 return -EFAULT;
         if (put_user(2 * sizeof(unsigned int), _tlv + 1))
diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h
index d7dfa547e2d8..46bbefe2e4a9 100644
--- a/sound/pci/hda/hda_local.h
+++ b/sound/pci/hda/hda_local.h
@@ -38,10 +38,11 @@
  */
 #define HDA_COMPOSE_AMP_VAL_OFS(nid,chs,idx,dir,ofs)            \
         ((nid) | ((chs)<<16) | ((dir)<<18) | ((idx)<<19) | ((ofs)<<23))
+#define HDA_AMP_VAL_MIN_MUTE (1<<29)
 #define HDA_COMPOSE_AMP_VAL(nid,chs,idx,dir) \
         HDA_COMPOSE_AMP_VAL_OFS(nid, chs, idx, dir, 0)
 /* mono volume with index (index=0,1,...) (channel=1,2) */
-#define HDA_CODEC_VOLUME_MONO_IDX(xname, xcidx, nid, channel, xindex, direction) \
+#define HDA_CODEC_VOLUME_MONO_IDX(xname, xcidx, nid, channel, xindex, dir, flags) \
         { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xcidx,  \
           .subdevice = HDA_SUBDEV_AMP_FLAG, \
           .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | \
@@ -51,16 +52,20 @@
           .get = snd_hda_mixer_amp_volume_get, \
           .put = snd_hda_mixer_amp_volume_put, \
           .tlv = { .c = snd_hda_mixer_amp_tlv },                \
-          .private_value = HDA_COMPOSE_AMP_VAL(nid, channel, xindex, direction) }
+          .private_value = HDA_COMPOSE_AMP_VAL(nid, channel, xindex, dir) | flags }
 /* stereo volume with index */
 #define HDA_CODEC_VOLUME_IDX(xname, xcidx, nid, xindex, direction) \
-        HDA_CODEC_VOLUME_MONO_IDX(xname, xcidx, nid, 3, xindex, direction)
+        HDA_CODEC_VOLUME_MONO_IDX(xname, xcidx, nid, 3, xindex, direction, 0)
 /* mono volume */
 #define HDA_CODEC_VOLUME_MONO(xname, nid, channel, xindex, direction) \
-        HDA_CODEC_VOLUME_MONO_IDX(xname, 0, nid, channel, xindex, direction)
+        HDA_CODEC_VOLUME_MONO_IDX(xname, 0, nid, channel, xindex, direction, 0)
 /* stereo volume */
 #define HDA_CODEC_VOLUME(xname, nid, xindex, direction) \
         HDA_CODEC_VOLUME_MONO(xname, nid, 3, xindex, direction)
+/* stereo volume with min=mute */
+#define HDA_CODEC_VOLUME_MIN_MUTE(xname, nid, xindex, direction) \
+        HDA_CODEC_VOLUME_MONO_IDX(xname, 0, nid, 3, xindex, direction, \
+                                  HDA_AMP_VAL_MIN_MUTE)
 /* mono mute switch with index (index=0,1,...) (channel=1,2) */
 #define HDA_CODEC_MUTE_MONO_IDX(xname, xcidx, nid, channel, xindex, direction) \
         { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xcidx, \
@@ -581,6 +586,7 @@ int snd_hda_check_amp_list_power(struct hda_codec *codec,
 #define get_amp_direction(kc)   (((kc)->private_value >> 18) & 0x1)
 #define get_amp_index(kc)       (((kc)->private_value >> 19) & 0xf)
 #define get_amp_offset(kc)      (((kc)->private_value >> 23) & 0x3f)
+#define get_amp_min_mute(kc)    (((kc)->private_value >> 29) & 0x1)
 
 /*
  * CEA Short Audio Descriptor data
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index d8dfafeab80e..1a563a2fbbec 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -992,7 +992,7 @@ static struct hda_verb stac9205_core_init[] = {
         }
 
 static struct snd_kcontrol_new stac9200_mixer[] = {
-        HDA_CODEC_VOLUME("Master Playback Volume", 0xb, 0, HDA_OUTPUT),
+        HDA_CODEC_VOLUME_MIN_MUTE("Master Playback Volume", 0xb, 0, HDA_OUTPUT),
         HDA_CODEC_MUTE("Master Playback Switch", 0xb, 0, HDA_OUTPUT),
         HDA_CODEC_VOLUME("Capture Volume", 0x0a, 0, HDA_OUTPUT),
         HDA_CODEC_MUTE("Capture Switch", 0x0a, 0, HDA_OUTPUT),
@@ -1020,7 +1020,7 @@ static struct snd_kcontrol_new stac92hd71bxx_loopback[] = {
 };
 
 static struct snd_kcontrol_new stac925x_mixer[] = {
-        HDA_CODEC_VOLUME("Master Playback Volume", 0x0e, 0, HDA_OUTPUT),
+        HDA_CODEC_VOLUME_MIN_MUTE("Master Playback Volume", 0xe, 0, HDA_OUTPUT),
         HDA_CODEC_MUTE("Master Playback Switch", 0x0e, 0, HDA_OUTPUT),
         { } /* end */
 };
@@ -1144,6 +1144,8 @@ static int stac92xx_build_controls(struct hda_codec *codec)
                                         HDA_OUTPUT, vmaster_tlv);
                 /* correct volume offset */
                 vmaster_tlv[2] += vmaster_tlv[3] * spec->volume_offset;
+                /* minimum value is actually mute */
+                vmaster_tlv[3] |= 0x1000;
                 err = snd_hda_add_vmaster(codec, "Master Playback Volume",
                                           vmaster_tlv, slave_vols);
                 if (err < 0)