Re: [PATCH v6 3/6] drm: Add driver for Solomon SSD130x OLED displays

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Hi Javier,

On Mon, Feb 14, 2022 at 2:37 PM Javier Martinez Canillas
<javierm@xxxxxxxxxx> wrote:
> This adds a DRM driver for SSD1305, SSD1306, SSD1307 and SSD1309 Solomon
> OLED display controllers.
>
> It's only the core part of the driver and a bus specific driver is needed
> for each transport interface supported by the display controllers.
>
> Signed-off-by: Javier Martinez Canillas <javierm@xxxxxxxxxx>

Thanks for your patch, which is now commit a61732e808672cfa ("drm:
Add driver for Solomon SSD130x OLED displays") in drm/drm-next

Sorry for the delay, but finally I gave it a try on my Adafruit
FeatherWing 128x32 OLED.
Some of the weird issues (cursor disappears after printing some text,
more text also doesn't appear until I clear the display) are still there.
Unfortunately a regression was introduced since your v3: printed
text is mirrored upside-down. I.e. "E" is rendered correctly, but "L"
turns into "Γ" (Greek Gamma).
I suspect something went wrong with the display initialization
sequence.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds




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