[alsa-devel] 答复: [PATCH 3/4] drm/radeon: Add audio component support

[Takashi Iwai]

On Wed, 25 Jul 2018 05:32:52 +0200,
Qu, Jim wrote:
> @@ -269,6 +271,10 @@ static void radeon_audio_enable(struct radeon_device *rdev,
> 
>         if (rdev->audio.funcs->enable)
>                 rdev->audio.funcs->enable(rdev, pin, enable_mask);
> +
> +       if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify)
> +               acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr,
> +                                                pin->id, -1);
> 
> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
> Jim: radeon_audio_enable() can enable audios and also disable them, so eld noitfy callback should be called when enable_mask is true.

It's intentional.  The notifier needs to be called at disablement
time, too.  The audio driver has to follow the HDMI audio disablement,
and notifier receives both on and off case.

The actual state is inquired via get_eld call by HD-audio followed
after the notification.


thanks,

Takashi