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authorDavid Henningsson <david.henningsson@canonical.com>2015-05-28 09:40:23 +0200
committerTakashi Iwai <tiwai@suse.de>2015-05-28 10:06:29 +0200
commitb40eda6408e94ee286cb5720cd3f409f70e01778 (patch)
tree5e22c02f4f24c9f63d6842070515edae00b4a080
parentc545f799c7470682756ca64c63f6bfcdaf28442b (diff)
downloadlinux-stericsson-b40eda6408e94ee286cb5720cd3f409f70e01778.tar.gz
ALSA: hda - Disable Headphone Mic boost for ALC662
When headphone mic boost is above zero, some 10 - 20 second delay might occur before the headphone mic is operational. Therefore disable the headphone mic boost control (recording gain is sufficient even without it). (Note: this patch is not about the headset mic, it's about the less common mic-in only mode.) BugLink: https://bugs.launchpad.net/bugs/1454235 Suggested-by: Kailang Yang <kailang@realtek.com> Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--sound/pci/hda/patch_realtek.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index e3bf72bb278c..ea3af38eee58 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4228,6 +4228,11 @@ static void alc_fixup_headset_mode_alc662(struct hda_codec *codec,
if (action == HDA_FIXUP_ACT_PRE_PROBE) {
spec->parse_flags |= HDA_PINCFG_HEADSET_MIC;
spec->gen.hp_mic = 1; /* Mic-in is same pin as headphone */
+
+ /* Disable boost for mic-in permanently. (This code is only called
+ from quirks that guarantee that the headphone is at NID 0x1b.) */
+ snd_hda_codec_write(codec, 0x1b, 0, AC_VERB_SET_AMP_GAIN_MUTE, 0x7000);
+ snd_hda_override_wcaps(codec, 0x1b, get_wcaps(codec, 0x1b) & ~AC_WCAP_IN_AMP);
} else
alc_fixup_headset_mode(codec, fix, action);
}