Re: [PATCH v3 2/2] drm/tiny: add support for PIXPAPER 4.26 monochrome e-ink panel

[Thomas Zimmermann]

(cc'ing panel maintainers)

Hi

Am 16.09.26 um 10:29 schrieb LiangCheng Wang:
> Hi Devarsh, Thomas,
>
> Sorry to come back to this thread after a quiet spell, and apologies in
> advance if I have missed something obvious.
>
> Devarsh, the three fixes from my July testing on the PIXPAPER 4.26m are
> still available:
>
>    https://lore.kernel.org/all/20260731-ssd16xx-pixpaper-rpi5-v1-0-18ffc0dbf59a@xxxxxxxxx/
>
> I am happy to rebase them, reshape them into whatever form fits your
> series best, or retest on a newer kernel - whatever is most convenient
> for you. There is no hurry at all from my side; please just let me know
> if anything would be useful, and thank you again for making room for the
> panel in your work.

Where exactly are these ssd16xx patches. I cannot find them in the DRM 
trees. I presume they are not upstream yet?

> Thomas, may I ask your advice on how best to handle the panel support in
> the meantime? The PIXPAPER 4.26m is the only SSD16xx hardware I have, so
> everything I can contribute is limited to this one panel, and its support
> has been on hold since June waiting for the shared driver.
>
> I wondered whether it might be acceptable to merge the standalone
> PIXPAPER driver as an interim step, on the understanding that I convert
> the panel over to ssd16xx and remove the standalone driver once the
> shared driver lands. I realise that is not ideal, and I may well be
> missing a better option - if you would prefer to wait for the shared
> driver, I am perfectly happy to do that instead. I would rather follow
> your judgement than guess.

If there's support for similar ICs, I'd strongly prefer to have the be 
ssd1677 part of that instead of a stand-alone driver.

Once the stand-alone driver is in place, users will rely on it. Then it 
becomes hard to replace. We had (have?) cases where there are several 
drivers for the same hardware.

Best regards
Thomas


> Thank you both for the review time so far.
>
> Regards,
> LiangCheng

--
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstr. 146, 90461 Nürnberg, Germany, www.suse.com
GF: Jochen Jaser, Andrew McDonald, (HRB 36809, AG Nürnberg)