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authorTakashi Iwai <tiwai@suse.de>2013-12-10 17:33:49 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-12-20 07:45:07 -0800
commit3d0ed796879a3d63593eee271e3acafb3cffb7d6 (patch)
tree7777e4d2ac982fe03d215d8d45da271b5cdf5993 /sound/pci
parent2a9f683edd34578a3d1e789781f4499af4990d63 (diff)
downloadlinux-linaro-stable-3d0ed796879a3d63593eee271e3acafb3cffb7d6.tar.gz
ALSA: hda - Mute all aamix inputs as default
commit ebb93c057dda376414fbc499ad6ace9b527dff5a upstream. 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. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound/pci')
-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 b4e4dd6fd91c..8536266e4004 100644
--- a/sound/pci/hda/hda_generic.c
+++ b/sound/pci/hda/hda_generic.c
@@ -4222,6 +4222,26 @@ 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
@@ -4360,6 +4380,10 @@ 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);