[alsa-devel] [PATCH 1/2] ALSA: hdmi - poll eld at resume time

[Takashi Iwai]

At Mon, 24 Jun 2013 07:45:23 -0400,
Wang Xingchao wrote:
> 
> Hdmi driver may not receive intrinsic event from gfx side when
> it's in runtime suspend mode. There's no ELD info when exit from
> runtime suspend. This patch avoid missing ELD info.

hda_call_codec_resume() sets the jack detection all dirty, thus each
jack detection callback should be called at resume.  Didn't it work as
expected?


Takashi

> 
> Signed-off-by: Wang Xingchao <xingchao.wang at linux.intel.com>
> ---
>  sound/pci/hda/patch_hdmi.c | 21 +++++++++++++++++++++
>  1 file changed, 21 insertions(+)
> 
> diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
> index 7803ddd..cb8ac66 100644
> --- a/sound/pci/hda/patch_hdmi.c
> +++ b/sound/pci/hda/patch_hdmi.c
> @@ -1868,12 +1868,33 @@ static void generic_hdmi_free(struct hda_codec *codec)
>  	kfree(spec);
>  }
>  
> +#ifdef CONFIG_PM
> +static int generic_hdmi_resume(struct hda_codec *codec)
> +{
> +	struct hdmi_spec *spec = codec->spec;
> +	int pin_idx;
> +
> +	generic_hdmi_init(codec);
> +	snd_hda_codec_resume_amp(codec);
> +	snd_hda_codec_resume_cache(codec);
> +
> +	for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
> +		struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx);
> +		hdmi_present_sense(per_pin, 1);
> +	}
> +	return 0;
> +}
> +#endif
> +
>  static const struct hda_codec_ops generic_hdmi_patch_ops = {
>  	.init			= generic_hdmi_init,
>  	.free			= generic_hdmi_free,
>  	.build_pcms		= generic_hdmi_build_pcms,
>  	.build_controls		= generic_hdmi_build_controls,
>  	.unsol_event		= hdmi_unsol_event,
> +#ifdef CONFIG_PM
> +	.resume 		= generic_hdmi_resume,
> +#endif
>  };
>  
>  
> -- 
> 1.8.1.2
>