drm/kms: add crtc disable function

More explicit than dpms. Same as the encoder disable function.

Need this to explicity disconnect plls from crtcs for reuse when you
plls:crtcs ratio isn't 1:1.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h
index 1121f7799c6..7e3c9766acb 100644
--- a/include/drm/drm_crtc_helper.h
+++ b/include/drm/drm_crtc_helper.h
@@ -63,6 +63,9 @@ struct drm_crtc_helper_funcs {
 
         /* reload the current crtc LUT */
         void (*load_lut)(struct drm_crtc *crtc);
+
+        /* disable crtc when not in use - more explicit than dpms off */
+        void (*disable)(struct drm_crtc *crtc);
 };
 
 struct drm_encoder_helper_funcs {