[Intel-gfx] [PATCH 17/21 v2] drm/i915: copy staged scaler state from drm state to crtc->config.

[Chandra Konduru]

This is required for commit to perform as per staged assignment
of scalers until atomic crtc commit function is available.

As a place holder doing this copy from intel_atomic_commit for
scaling to operate correctly.

Signed-off-by: Chandra Konduru <chandra.konduru at intel.com>
---
 drivers/gpu/drm/i915/intel_atomic.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_atomic.c b/drivers/gpu/drm/i915/intel_atomic.c
index 73e94c4..5046316 100644
--- a/drivers/gpu/drm/i915/intel_atomic.c
+++ b/drivers/gpu/drm/i915/intel_atomic.c
@@ -166,6 +166,18 @@ int intel_atomic_commit(struct drm_device *dev,
 		swap(state->plane_states[i], plane->state);
 		plane->state->state = NULL;
 	}
+
+	/* swap crtc_state */
+	for (i = 0; i < dev->mode_config.num_crtc; i++) {
+		struct drm_crtc *crtc = state->crtcs[i];
+		if (!crtc) {
+			continue;
+		}
+
+		to_intel_crtc(crtc)->config->scaler_state =
+			to_intel_crtc_state(state->crtc_states[i])->scaler_state;
+	}
+
 	drm_atomic_helper_commit_planes(dev, state);
 	drm_atomic_helper_wait_for_vblanks(dev, state);
 	drm_atomic_helper_cleanup_planes(dev, state);
-- 
1.7.9.5