struct display_timing *timings);
};
+/**
+ * struct drm_panel - DRM panel object
+ * @drm: DRM device owning the panel
+ * @connector: DRM connector that the panel is attached to
+ * @dev: parent device of the panel
+ * @funcs: operations that can be performed on the panel
+ * @list: panel entry in registry
+ */
struct drm_panel {
struct drm_device *drm;
struct drm_connector *connector;
struct list_head list;
};
+/**
+ * drm_disable_unprepare - power off a panel
+ * @panel: DRM panel
+ *
+ * Calling this function will completely power off a panel (assert the panel's
+ * reset, turn off power supplies, ...). After this function has completed, it
+ * is usually no longer possible to communicate with the panel until another
+ * call to drm_panel_prepare().
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
static inline int drm_panel_unprepare(struct drm_panel *panel)
{
if (panel && panel->funcs && panel->funcs->unprepare)
return panel ? -ENOSYS : -EINVAL;
}
+/**
+ * drm_panel_disable - disable a panel
+ * @panel: DRM panel
+ *
+ * This will typically turn off the panel's backlight or disable the display
+ * drivers. For smart panels it should still be possible to communicate with
+ * the integrated circuitry via any command bus after this call.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
static inline int drm_panel_disable(struct drm_panel *panel)
{
if (panel && panel->funcs && panel->funcs->disable)
return panel ? -ENOSYS : -EINVAL;
}
+/**
+ * drm_panel_prepare - power on a panel
+ * @panel: DRM panel
+ *
+ * Calling this function will enable power and deassert any reset signals to
+ * the panel. After this has completed it is possible to communicate with any
+ * integrated circuitry via a command bus.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
static inline int drm_panel_prepare(struct drm_panel *panel)
{
if (panel && panel->funcs && panel->funcs->prepare)
return panel ? -ENOSYS : -EINVAL;
}
+/**
+ * drm_panel_enable - enable a panel
+ * @panel: DRM panel
+ *
+ * Calling this function will cause the panel display drivers to be turned on
+ * and the backlight to be enabled. Content will be visible on screen after
+ * this call completes.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
static inline int drm_panel_enable(struct drm_panel *panel)
{
if (panel && panel->funcs && panel->funcs->enable)
return panel ? -ENOSYS : -EINVAL;
}
+/**
+ * drm_panel_get_modes - probe the available display modes of a panel
+ * @panel: DRM panel
+ *
+ * The modes probed from the panel are automatically added to the connector
+ * that the panel is attached to.
+ *
+ * Return: The number of modes available from the panel on success or a
+ * negative error code on failure.
+ */
static inline int drm_panel_get_modes(struct drm_panel *panel)
{
if (panel && panel->funcs && panel->funcs->get_modes)