drm: Add drm_plane_force_disable()
drm_plane_force_disable() will forcibly disable the plane even if user
had previously requested the plane to be enabled.
This can be used to force planes to be off when restoring the fbdev
mode.
The code was simply pulled from drm_framebuffer_remove(), which now
calls the new function as well.
v2: Check plane->fb in drm_plane_force_disable(), drop bogus comment
about disabling crtc
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@gmail.com>
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 53c33e2..da137e7 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -894,6 +894,7 @@
const uint32_t *formats, uint32_t format_count,
bool priv);
extern void drm_plane_cleanup(struct drm_plane *plane);
+extern void drm_plane_force_disable(struct drm_plane *plane);
extern void drm_encoder_cleanup(struct drm_encoder *encoder);