This is a note to let you know that I've just added the patch titled
ALSA: hda - Fix headset mic input after muted internal mic (Dell/Realtek)
to the 3.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
alsa-hda-fix-headset-mic-input-after-muted-internal-mic-dell-realtek.patch
and it can be found in the queue-3.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d59915d0655c5864b514f21daaeac98c047875dc Mon Sep 17 00:00:00 2001
From: David Henningsson <david.henningsson@xxxxxxxxxxxxx>
Date: Mon, 2 Dec 2013 18:06:20 +0800
Subject: ALSA: hda - Fix headset mic input after muted internal mic (Dell/Realtek)
From: David Henningsson <david.henningsson@xxxxxxxxxxxxx>
commit d59915d0655c5864b514f21daaeac98c047875dc upstream.
By trial and error, I found this patch could work around an issue
where the headset mic would stop working if you switch between the
internal mic and the headset mic, and the internal mic was muted.
It still takes a second or two before the headset mic actually starts
working, but still better than nothing.
Information update from Kailang:
The verb was ADC digital mute(bit 6 default 1).
Switch internal mic and headset mic will run alc_headset_mode_default.
The coef index 0x11 will set to 0x0041.
Because headset mode was fixed type. It doesn't need to run
alc_determine_headset_type.
So, the value still keep 0x0041. ADC was muted.
BugLink: https://bugs.launchpad.net/bugs/1256840
Signed-off-by: David Henningsson <david.henningsson@xxxxxxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/pci/hda/patch_realtek.c | 2 ++
1 file changed, 2 insertions(+)
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -3231,6 +3231,7 @@ static void alc_headset_mode_ctia(struct
alc_write_coef_idx(codec, 0x18, 0x7388);
break;
case 0x10ec0668:
+ alc_write_coef_idx(codec, 0x11, 0x0001);
alc_write_coef_idx(codec, 0x15, 0x0d60);
alc_write_coef_idx(codec, 0xc3, 0x0000);
break;
@@ -3253,6 +3254,7 @@ static void alc_headset_mode_omtp(struct
alc_write_coef_idx(codec, 0x18, 0x7388);
break;
case 0x10ec0668:
+ alc_write_coef_idx(codec, 0x11, 0x0001);
alc_write_coef_idx(codec, 0x15, 0x0d50);
alc_write_coef_idx(codec, 0xc3, 0x0000);
break;
Patches currently in stable-queue which might be from david.henningsson@xxxxxxxxxxxxx are
queue-3.12/alsa-hda-add-mono-speaker-quirk-for-dell-inspiron-5439.patch
queue-3.12/alsa-hda-fix-headset-mic-input-after-muted-internal-mic-dell-realtek.patch
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