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

[Hans de Goede]

Hi,

On 5/14/20 11:53 AM, Emil Velikov wrote:
> Hi Hans,
> 
> On Thu, 30 Apr 2020 at 15:55, Hans de Goede <hdegoede at redhat.com> wrote:
>>
>> 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.
>>
> Having read through the full discussion, couple of times, I believe
> you're spot on.
> 
> Daniel requested documentation, which the patch provides. I'd say
> let's poke him on IRC a few times, if he doesn't object let's push it?

Sounds good to me, I'm usually not on IRC (too distracting for me), canyou
ping Daniel about this on IRC?

Regards,

Hans