[PATCH resend] drm: Add DRM_MODE_TYPE_USERDEF flag to probed modes matching a video= argument

[Hans de Goede]

Hi,

On 4/30/20 4:52 PM, Ville Syrjälä wrote:
> On Thu, Apr 30, 2020 at 02:47:00PM +0100, Emil Velikov wrote:
>> Hi Hans,
>>
>> On Fri, 21 Feb 2020 at 17:33, Hans de Goede <hdegoede at redhat.com> wrote:
>>>
>>> drm_helper_probe_add_cmdline_mode() prefers using a probed mode matching
>>> a video= argument over calculating our own timings for the user specified
>>> mode using CVT or GTF.
>>>
>>> But userspace code which is auto-configuring the mode may want to know that
>>> the user has specified that mode on the kernel commandline so that it can
>>> pick that mode over the mode which is marked as DRM_MODE_TYPE_PREFERRED.
>>>
>>> This commit sets the DRM_MODE_TYPE_USERDEF flag on the matching mode, just
>>> as we would do on the user-specified mode when no matching probed mode is
>>> found.
>>>
>>> Signed-off-by: Hans de Goede <hdegoede at redhat.com>
>>
>> I was skimming around wrt Ville's compact drm_display_mode series and
>> noticed that this never landed.
>>
>> The commit brings extra consistency when dealing with user defined
>> modes, and is:
>> Reviewed-by: Emil Velikov <emil.velikov at collabora.com>
>>
>> Ville this may trivially conflict with your work. I suspect you can do
>> the honours, and apply on top of your series?
>> That is if you agree with the patch.
> 
> Quick glance at the original thread says maybe there were still some
> userspace issues unresolved? Not sure.

IIRC the thread ended with Daniel agreeing on the userspace interface,
but asking for some docs and me pointing out that the patch already
updated/clarified the existing docs. After that things got quiet.

So I believe that this is (still) ready to go upstream.

Regards,

Hans