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authorTakashi Iwai <tiwai@suse.de>2013-12-10 17:33:49 +0100
committerTakashi Iwai <tiwai@suse.de>2013-12-10 21:16:50 +0100
commitebb93c057dda376414fbc499ad6ace9b527dff5a (patch)
tree524813e7a7d239d1f0e861c245d3d25d21991b59 /sound
parent6733cf572a9e20db2b7580a5dd39d5782d571eec (diff)
ALSA: hda - Mute all aamix inputs as default
Not all channels have been initialized, so far, especially when aamix NID itself doesn't have amps but its leaves have. This patch fixes these holes. Otherwise you might get unexpected loopback inputs, e.g. from surround channels. Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/pci/hda/hda_generic.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
index c4671d00babd..249cd4615908 100644
--- a/sound/pci/hda/hda_generic.c
+++ b/sound/pci/hda/hda_generic.c
@@ -4297,6 +4297,26 @@ static unsigned int snd_hda_gen_path_power_filter(struct hda_codec *codec,
return AC_PWRST_D3;
}
+/* mute all aamix inputs initially; parse up to the first leaves */
+static void mute_all_mixer_nid(struct hda_codec *codec, hda_nid_t mix)
+{
+ int i, nums;
+ const hda_nid_t *conn;
+ bool has_amp;
+
+ nums = snd_hda_get_conn_list(codec, mix, &conn);
+ has_amp = nid_has_mute(codec, mix, HDA_INPUT);
+ for (i = 0; i < nums; i++) {
+ if (has_amp)
+ snd_hda_codec_amp_stereo(codec, mix,
+ HDA_INPUT, i,
+ 0xff, HDA_AMP_MUTE);
+ else if (nid_has_volume(codec, conn[i], HDA_OUTPUT))
+ snd_hda_codec_amp_stereo(codec, conn[i],
+ HDA_OUTPUT, 0,
+ 0xff, HDA_AMP_MUTE);
+ }
+}
/*
* Parse the given BIOS configuration and set up the hda_gen_spec
@@ -4435,6 +4455,10 @@ int snd_hda_gen_parse_auto_config(struct hda_codec *codec,
}
}
+ /* mute all aamix input initially */
+ if (spec->mixer_nid)
+ mute_all_mixer_nid(codec, spec->mixer_nid);
+
dig_only:
parse_digital(codec);