From: Peter Ujfalusi peter.ujfalusi@ti.com
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: Peter Ujfalusi peter.ujfalusi@ti.com Signed-off-by: Tomi Valkeinen tomi.valkeinen@ti.com --- drivers/gpu/drm/omapdrm/dss/display.c | 18 ++++++++++++++++++ drivers/gpu/drm/omapdrm/dss/omapdss.h | 3 +++ drivers/gpu/drm/omapdrm/dss/output.c | 13 +++++++++++++ 3 files changed, 34 insertions(+)
diff --git a/drivers/gpu/drm/omapdrm/dss/display.c b/drivers/gpu/drm/omapdrm/dss/display.c index e567ff68b216..94c012e0584b 100644 --- a/drivers/gpu/drm/omapdrm/dss/display.c +++ b/drivers/gpu/drm/omapdrm/dss/display.c @@ -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)) diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h index 4545f1824e66..7e1feb935137 100644 --- a/drivers/gpu/drm/omapdrm/dss/omapdss.h +++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h @@ -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 */ diff --git a/drivers/gpu/drm/omapdrm/dss/output.c b/drivers/gpu/drm/omapdrm/dss/output.c index 2b999dc48621..655c5d73eac9 100644 --- a/drivers/gpu/drm/omapdrm/dss/output.c +++ b/drivers/gpu/drm/omapdrm/dss/output.c @@ -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;