drm/omap: Expose DRM modes instead of timings in display devices

omap_dss_device operations expose fixed video timings through a
.get_timings() operation that return a single timing for the device. To
prepare for the move to drm_bridge, modify the API to instead add DRM
modes directly to the connector.

As this puts more burden on display devices, we also create a helper
function for panels to add a single DRM mode from the panel video
timings.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Tested-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/drivers/gpu/drm/omapdrm/dss/display.c b/drivers/gpu/drm/omapdrm/dss/display.c
index 34b2a4ef63a4..398964358386 100644
--- a/drivers/gpu/drm/omapdrm/dss/display.c
+++ b/drivers/gpu/drm/omapdrm/dss/display.c
@@ -23,6 +23,9 @@
 #include <linux/kernel.h>
 #include <linux/of.h>
 
+#include <drm/drm_connector.h>
+#include <drm/drm_modes.h>
+
 #include "omapdss.h"
 
 static int disp_num_counter;
@@ -58,3 +61,22 @@ struct omap_dss_device *omapdss_display_get(struct omap_dss_device *output)
 	return omapdss_device_get(output);
 }
 EXPORT_SYMBOL_GPL(omapdss_display_get);
+
+int omapdss_display_get_modes(struct drm_connector *connector,
+			      const struct videomode *vm)
+{
+	struct drm_display_mode *mode;
+
+	mode = drm_mode_create(connector->dev);
+	if (!mode)
+		return 0;
+
+	drm_display_mode_from_videomode(vm, mode);
+
+	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+	drm_mode_set_name(mode);
+	drm_mode_probed_add(connector, mode);
+
+	return 1;
+}
+EXPORT_SYMBOL_GPL(omapdss_display_get_modes);