[3.13.y.z extended stable] Patch "ALSA: ALC283 codec - Avoid pop noise on headphones during suspend/resume" has been added to staging queue

Kamal Mostafa kamal at canonical.com
Fri Oct 31 20:53:39 UTC 2014


This is a note to let you know that I have just added a patch titled

    ALSA: ALC283 codec - Avoid pop noise on headphones during suspend/resume

to the linux-3.13.y-queue branch of the 3.13.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.13.y-queue

This patch is scheduled to be released in version 3.13.11.11.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.13.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From 8059837b88a00dbd5f6c2798b019b9a925f4f105 Mon Sep 17 00:00:00 2001
From: Harsha Priya <harshapriya.n at intel.com>
Date: Thu, 9 Oct 2014 11:04:56 +0000
Subject: ALSA: ALC283 codec - Avoid pop noise on headphones during
 suspend/resume

commit b450b17c156e264bc44a198046d3ebaaef5a041d upstream.

This patch sets the headphones mode to default before suspending
which helps avoid the pop noise on headphones

Signed-off-by: Harsha Priya <harshapriya.n at intel.com>
Signed-off-by: Takashi Iwai <tiwai at suse.de>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 sound/pci/hda/patch_realtek.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index b2a5832..1a24b2c 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -2871,6 +2871,9 @@ static void alc283_shutup(struct hda_codec *codec)

 	alc_write_coef_idx(codec, 0x43, 0x9004);

+	/*depop hp during suspend*/
+	alc_write_coef_idx(codec, 0x06, 0x2100);
+
 	snd_hda_codec_write(codec, hp_pin, 0,
 			    AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE);

--
1.9.1





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