[PATCH 01/12] drm/panel: kd35t133: Add panel orientation support

[Heiko Stübner]

Am Donnerstag, 24. Juni 2021, 20:26:01 CEST schrieb Ezequiel Garcia:
> Parse the device tree rotation specifier, and set a DRM
> connector orientation property. The property can then be read
> by compositors to apply hardware plane rotation or a GPU transform.
> 
> Signed-off-by: Ezequiel Garcia <ezequiel at collabora.com>

similar patch already applied for 5.14:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/gpu/drm/panel/panel-elida-kd35t133.c?id=610d9c311b1387f8c4ac602fee1f2a1cb0508707

> ---
>  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 fe5ac3ef9018..5987d28c874c 100644
> --- a/drivers/gpu/drm/panel/panel-elida-kd35t133.c
> +++ b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
> @@ -39,6 +39,7 @@
>  struct kd35t133 {
>  	struct device *dev;
>  	struct drm_panel panel;
> +	enum drm_panel_orientation orientation;
>  	struct gpio_desc *reset_gpio;
>  	struct regulator *vdd;
>  	struct regulator *iovcc;
> @@ -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) {
> +		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;
>