linux-kernel - Re: [PATCH] drm: bridge: adv7511: get edid in hpd

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Message-ID: <suuq6vyosh6ddh7szjwuznmr326cpxjtugw3chbnogome7lmpp@fr2lblb6qudg>
Date:   Sat, 14 Oct 2023 19:48:18 +0000
From:   Alvin Šipraga <ALSI@...g-olufsen.dk>
To:     Alvin Šipraga <alvin@...s.dk>
CC:     Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Robert Foss <rfoss@...nel.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drm: bridge: adv7511: get edid in hpd_work to update CEC
 phys address

On Sat, Oct 14, 2023 at 09:43:01PM +0200, Alvin Šipraga wrote:
> From: Alvin Šipraga <alsi@...g-olufsen.dk>
> 
> The adv7511 driver is solely responsible for setting the physical
> address of its CEC adapter. To do this, it must read the EDID. However,
> EDID is only read when either the drm_bridge_funcs :: get_edid or
> drm_connector_helper_funcs :: get_modes ops are called. Without loss of
> generality, it cannot be assumed that these ops are called when a sink
> gets attached. Therefore there exist scenarios in which the CEC physical
> address will be invalid (f.f.f.f), rendering the CEC adapter inoperable.
> 
> Address this problem by always fetching the EDID in the HPD work when we
> detect a connection. The CEC physical address is set in the process.
> 
> Signed-off-by: Alvin Šipraga <alsi@...g-olufsen.dk>


Oops, I think that I got the subject prefix wrong. It should be

    drm/bridge:

and not

    drm: bridge:

right?

Thanks.

Kind regards,
Alvin