linux-kernel - Re: [PATCH v3 2/4] drm/edid: Add a function to check monitor string

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Date: Wed, 06 Mar 2024 14:53:40 +0200
From: Jani Nikula <jani.nikula@...ux.intel.com>
To: Hsin-Yi Wang <hsinyi@...omium.org>, Doug Anderson <dianders@...omium.org>
Cc: Neil Armstrong <neil.armstrong@...aro.org>, Jessica Zhang
 <quic_jesszhan@...cinc.com>, Sam Ravnborg <sam@...nborg.org>, Maarten
 Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard
 <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, David
 Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, Dmitry
 Baryshkov <dmitry.baryshkov@...aro.org>
Subject: Re: [PATCH v3 2/4] drm/edid: Add a function to check monitor string

On Tue, 05 Mar 2024, Hsin-Yi Wang <hsinyi@...omium.org> wrote:
> On Tue, Mar 5, 2024 at 11:25 AM Doug Anderson <dianders@...omium.org> wrote:
>> Hmm. As Hsin-Yi pointed out to me offline. Somehow we'll need to get
>> the actual panel ID out. Right now in panel-edp.c we have:
>>
>> dev_warn(dev,
>>   "Unknown panel %s %#06x, using conservative timings\n",
>>   vend, product_id);
>>
>> Where "vend" and "product_id" come from the panel ID of a panel that
>> we didn't recognize. For instance:
>>
>>   Unknown panel BOE 0x0731, using conservative timings
>>
>> We need to still be able to print this message for unrecognized
>> panels. Then when we see field reports including this message we know
>> that somehow we ended up shipping an unrecognized panel.
>>
>> Any suggestions on what abstraction you'd like to see to enable us to
>> print that message if everything is opaque?
>
> Sent v4 here: https://lore.kernel.org/lkml/20240306004347.974304-1-hsinyi@chromium.org/
>
> Besides that it still keeps drm_edid_get_panel_id() to be used on the
> kernel warning when no panel is matched, other parts I think are
> following the comments.

Yeah we can keep that for now.

BR,
Jani.


-- 
Jani Nikula, Intel