Odroid GO Advance display in mainline (Re: [PATCH 1/2] drm/panel: add rotation support for Elida KD35T133 panels)

[Ezequiel Garcia]

(Now with Heiko's address fixed)

On Sat, 13 Feb 2021 at 10:53, Ezequiel Garcia
<ezequiel at vanguardiasur.com.ar> wrote:
>
> Hi Chris,
>
> I'm hijacking this discussion a bit.
>
> I recently tried to boot maline on my Odroid GOA, which I managed to do,
> except the display wasn't displaying anything :-)
>
> Everything looks good on a quick look, the Inno PHY driver is here,
> and there's a DRM card registered with the right mode 320x240 and
> connected status (which I suppose doesn't mean much in this case).
> Also, the backlight is on.
>
> Looks like this is working for you, so I was wondering if maybe
> this would ring a bell, or perhaps you're aware of any patches
> we are missing in v5.11-rc7 (which is what I'm basing on).
> Or maybe I'm missing some config?...
>
> Any ideas would be welcome!
>
> Ezequiel
>
> On Fri, 12 Feb 2021 at 12:51, Chris Morgan <macromorgan at hotmail.com> wrote:
> >
> > Update the panel to allow setting the rotation value in device tree.
> >
> > Signed-off-by: Chris Morgan <macromorgan at hotmail.com>
> > ---
> >  drivers/gpu/drm/panel/panel-elida-kd35t133.c | 8 ++++++++
> >  1 file changed, 8 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/panel/panel-elida-kd35t133.c b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
> > index bc36aa3c1123..d8534406d1ef 100644
> > --- a/drivers/gpu/drm/panel/panel-elida-kd35t133.c
> > +++ b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
> > @@ -42,6 +42,7 @@ struct kd35t133 {
> >         struct gpio_desc *reset_gpio;
> >         struct regulator *vdd;
> >         struct regulator *iovcc;
> > +       enum drm_panel_orientation orientation;
> >         bool prepared;
> >  };
> >
> > @@ -216,6 +217,7 @@ static int kd35t133_get_modes(struct drm_panel *panel,
> >         connector->display_info.width_mm = mode->width_mm;
> >         connector->display_info.height_mm = mode->height_mm;
> >         drm_mode_probed_add(connector, mode);
> > +       drm_connector_set_panel_orientation(connector, ctx->orientation);
> >
> >         return 1;
> >  }
> > @@ -258,6 +260,12 @@ static int kd35t133_probe(struct mipi_dsi_device *dsi)
> >                 return ret;
> >         }
> >
> > +       ret = of_drm_get_panel_orientation(dev->of_node, &ctx->orientation);
> > +       if (ret < 0) {
> > +               dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, ret);
> > +               return ret;
> > +       }
> > +
> >         mipi_dsi_set_drvdata(dsi, ctx);
> >
> >         ctx->dev = dev;
> > --
> > 2.25.1
> >
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