linux-kernel - Re: [PATCH v6 1/8] drm/panel: Add an API to allow drm to set orientation from panel

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Date:   Wed, 8 Jun 2022 14:09:28 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Douglas Anderson <dianders@...omium.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Sam Ravnborg <sam@...nborg.org>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org,
        Rob Clark <robdclark@...omium.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 1/8] drm/panel: Add an API to allow drm to set
 orientation from panel

Quoting Hsin-Yi Wang (2022-06-08 02:48:09)
> index 1c48d162c77e..859165a1c8f1 100644
> --- a/drivers/gpu/drm/drm_connector.c
> +++ b/drivers/gpu/drm/drm_connector.c
> @@ -2389,6 +2393,34 @@ int drm_connector_set_panel_orientation_with_quirk(
>  }
>  EXPORT_SYMBOL(drm_connector_set_panel_orientation_with_quirk);
>
> +/**
> + * drm_connector_set_orientation_from_panel -
> + *     set the connector's panel_orientation from panel's callback.
> + * @connector: connector for which to init the panel-orientation property.
> + * @panel: panel that can provide orientation information.
> + *
> + * Drm drivers should call this function before drm_dev_register().
> + * Orientation is obtained from panel's .get_orientation() callback.
> + *
> + * Returns:
> + * Zero on success, negative errno on failure.
> + */
> +int drm_connector_set_orientation_from_panel(
> +       struct drm_connector *connector,
> +       struct drm_panel *panel)
> +{
> +       enum drm_panel_orientation panel_orientation;

s/panel_orientation/orientation/

> +
> +       if (panel && panel->funcs && panel->funcs->get_orientation)
> +               panel_orientation = panel->funcs->get_orientation(panel);
> +       else
> +               panel_orientation = DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
> +
> +       return drm_connector_set_panel_orientation(connector,
> +                                                  panel_orientation);

Then this fits on one line:

	return drm_connector_set_panel_orientation(connector, orientation);

> +}
> +EXPORT_SYMBOL(drm_connector_set_orientation_from_panel);
> +

Otherwise

Reviewed-by: Stephen Boyd <swboyd@...omium.org>