Comment 3 for bug 1034779

Revision history for this message
Takashi Iwai (tiwai) wrote : Re: [PATCH] ALSA: hda - Fix pop noise in headphones on S3 for Asus X55A, X55V

At Thu, 9 Aug 2012 10:35:27 +0200,
David Henningsson wrote:
>
> To turn off pin control for the pin was tested, and helped against
> this issue.
>
> BugLink: https://bugs.launchpad.net/bugs/1034779
> Tested-by: Chih-Hsyuan Ho <email address hidden>
> Signed-off-by: David Henningsson <email address hidden>
> ---
> sound/pci/hda/patch_via.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> Alsa-info at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1034779/+attachment/3254105/+files/asus-x55a-alsa-info.log
>
> diff --git a/sound/pci/hda/patch_via.c b/sound/pci/hda/patch_via.c
> index 80d90cb..c9484fe 100644
> --- a/sound/pci/hda/patch_via.c
> +++ b/sound/pci/hda/patch_via.c
> @@ -1752,6 +1752,14 @@ static int via_suspend(struct hda_codec *codec)
> {
> struct via_spec *spec = codec->spec;
> vt1708_stop_hp_work(spec);
> +
> + if (spec->codec_type == VT1802) {
> + /* Fix pop noise on headphones */
> + int i;
> + for (i = 0; i < spec->autocfg.hp_outs; i++)
> + snd_hda_set_pin_ctl(codec, spec->autocfg.hp_pins[0], 0);

Shouldn't this be spec->autocfg.hp_pins[i]?

thanks,

Takashi

> + }
> +
> return 0;
> }
> #endif
> --
> 1.7.9.5
>