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Commit 7c79e8d6 authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Tomi Valkeinen
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drm/omap: dss: Functions to check components in the display/output list 



The functions can be used to check a component (by it's of_node) if it is
part of the omapdss display or output list. If the component is found, it
means that the driver is loaded.

Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@ti.com>
parent be2d68c6

drivers/gpu/drm/omapdrm/dss/display.c

+18 −0
Original line number Diff line number Diff line
@@ -132,6 +132,24 @@ void omapdss_unregister_display(struct omap_dss_device *dssdev) 
}

EXPORT_SYMBOL(omapdss_unregister_display);



bool omapdss_component_is_display(struct device_node *node)

{

	struct omap_dss_device *dssdev;

	bool found = false;



	mutex_lock(&panel_list_mutex);

	list_for_each_entry(dssdev, &panel_list, panel_list) {

		if (dssdev->dev->of_node == node) {

			found = true;

			goto out;

		}

	}

out:

	mutex_unlock(&panel_list_mutex);

	return found;

}

EXPORT_SYMBOL(omapdss_component_is_display);



struct omap_dss_device *omap_dss_get_device(struct omap_dss_device *dssdev)

{

	if (!try_module_get(dssdev->owner))

drivers/gpu/drm/omapdrm/dss/omapdss.h

+3 −0
Original line number Diff line number Diff line
@@ -936,4 +936,7 @@ struct dispc_ops { 
void dispc_set_ops(const struct dispc_ops *o);

const struct dispc_ops *dispc_get_ops(void);



bool omapdss_component_is_display(struct device_node *node);

bool omapdss_component_is_output(struct device_node *node);



#endif /* __OMAP_DRM_DSS_H */

drivers/gpu/drm/omapdrm/dss/output.c

+13 −0
Original line number Diff line number Diff line
@@ -107,6 +107,19 @@ void omapdss_unregister_output(struct omap_dss_device *out) 
}

EXPORT_SYMBOL(omapdss_unregister_output);



bool omapdss_component_is_output(struct device_node *node)

{

	struct omap_dss_device *out;



	list_for_each_entry(out, &output_list, list) {

		if (out->dev->of_node == node)

			return true;

	}



	return false;

}

EXPORT_SYMBOL(omapdss_component_is_output);



struct omap_dss_device *omap_dss_get_output(enum omap_dss_output_id id)

{

	struct omap_dss_device *out;