Re: [PATCH v3 07/10] drm/display: hdmi_state_helper: reject Audio IF updates if it's not supported

[Dmitry Baryshkov]

On Wed, Jan 07, 2026 at 01:50:51PM +0100, Maxime Ripard wrote:
> Hi,
> 
> On Wed, Dec 24, 2025 at 03:02:56AM +0200, Dmitry Baryshkov wrote:
> > Updating the InfoFrame if it can not be sent over the wire makes no
> > sense. Change drm_atomic_helper_connector_hdmi_update_audio_infoframe()
> > and drm_atomic_helper_connector_hdmi_clear_audio_infoframe() to return
> > an error if Audio InfoFrame callbacks are not implemented.
> > 
> > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>
> 
> IIRC, audio infoframes are mandatory if you send audio over the cable,
> so maybe we should do like you did for drmm_connector_hdmi_init and
> error in drm_connector_hdmi_audio_init if we don't have the proper
> write_infoframe hook set?

HDMI hosts can be sending Audio InfoFrames in some other way (think
about LT9611UXC, which manages infoframes on its own).

-- 
With best wishes
Dmitry