[alsa-devel] [PATCH] ALSA: hda - Do not set GPIOs for speakers on IDT if there are no speakers

[Takashi Iwai]

At Wed, 22 Aug 2012 16:10:43 +0200,
David Henningsson wrote:
> 
> This fixes an issue with a machine where there were no speakers,
> but GPIO0 had to be data=1 for the headphone to be functioning.
> 
> I'm not sure if we need a more advanced patch to solve all possible cases,
> but if so, this patch would still provide a minor optimisation.
> 
> BugLink: https://bugs.launchpad.net/bugs/1040077
> Signed-off-by: David Henningsson <david.henningsson at canonical.com>

Thanks, applied now.


Takashi

> ---
>  sound/pci/hda/patch_sigmatel.c |    3 +++
>  1 file changed, 3 insertions(+)
> 
> The alsa-info for this machine can not be released yet, sorry.
> 
> diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
> index ea5775a..3edd73c 100644
> --- a/sound/pci/hda/patch_sigmatel.c
> +++ b/sound/pci/hda/patch_sigmatel.c
> @@ -4543,6 +4543,9 @@ static void stac92xx_line_out_detect(struct hda_codec *codec,
>  	struct auto_pin_cfg *cfg = &spec->autocfg;
>  	int i;
>  
> +	if (cfg->speaker_outs == 0)
> +		return;
> +
>  	for (i = 0; i < cfg->line_outs; i++) {
>  		if (presence)
>  			break;
> -- 
> 1.7.9.5
>