drm/kms: add a function that can add the mode for the output device without EDID

Add a function that can be used to add the default mode for the output device
without EDID.
It will add the default mode that meets with the requirements of given
hdisplay/vdisplay limit.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index b0427a70fcbd..ae1e9e166959 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -750,4 +750,6 @@ extern struct drm_display_mode *drm_cvt_mode(struct drm_device *dev,
 extern struct drm_display_mode *drm_gtf_mode(struct drm_device *dev,
                                 int hdisplay, int vdisplay, int vrefresh,
                                 bool interlaced, int margins);
+extern int drm_add_modes_noedid(struct drm_connector *connector,
+                                int hdisplay, int vdisplay);
 #endif /* __DRM_CRTC_H__ */