Re: [PATCH v2 25/25] drm/xlnx: Compute dumb-buffer sizes with drm_mode_size_dumb()

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Hi,

On 20/01/2025 09:49, Thomas Zimmermann wrote:
Hi


Am 16.01.25 um 11:03 schrieb Tomi Valkeinen:
[...]
Aligning video= and dumb buffers almost sounds like going backwards. video= parameter is bad,

Who told you that? Video= is still the way to specify an initial display mode to the kernel and it will remain so.

You did =). "It aligns dumb buffers and video=". I understand the need for drm_driver_color_mode_format() for video=. But I think it's bad for CREATE_DUMB, at least for the platforms which have never aimed for "RGB-only".

So you're not in favor of a drm_mode_size_dumb() version that does not use drm_driver_color_mode_format(), for these platforms? I'm still at loss as to why we would want to change the behavior of CREATE_DUMB. I see no upside, but I see the chance of regressions.

 Tomi




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