drm: atomic: Expose CRTC active property

Active was here, and we allowed users to set it, but not to get it as
well.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 10 insertions, 2 deletions

diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index a6caaae40b9e..e7af6b89b392 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -266,9 +266,17 @@ int drm_atomic_crtc_get_property(struct drm_crtc *crtc,
                 const struct drm_crtc_state *state,
                 struct drm_property *property, uint64_t *val)
 {
-        if (crtc->funcs->atomic_get_property)
+        struct drm_device *dev = crtc->dev;
+        struct drm_mode_config *config = &dev->mode_config;
+
+        if (property == config->prop_active)
+                *val = state->active;
+        else if (crtc->funcs->atomic_get_property)
                 return crtc->funcs->atomic_get_property(crtc, state, property, val);
-        return -EINVAL;
+        else
+                return -EINVAL;
+
+        return 0;
 }
 
 /**