[PATCH v8 03/25] drm: Add color correction blobs in CRTC state

[Shashank Sharma <shashank.sharma@xxxxxxxxx>]

This patch adds new variables in CRTC state, to hold respective color
correction blobs. These blobs will be required during the atomic commit
for writing the color correction values in correction registers.

Signed-off-by: Shashank Sharma <shashank.sharma@xxxxxxxxx>
Signed-off-by: Kausal Malladi <kausalmalladi@xxxxxxxxx>
---
 drivers/gpu/drm/drm_atomic_helper.c | 9 +++++++++
 include/drm/drm_crtc.h              | 8 ++++++++
 2 files changed, 17 insertions(+)

diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index d9053eb..077a89d 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -2407,6 +2407,12 @@ void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc,
 
 	if (state->mode_blob)
 		drm_property_reference_blob(state->mode_blob);
+	if (state->ctm_blob)
+		drm_property_reference_blob(state->ctm_blob);
+	if (state->palette_after_ctm_blob)
+		drm_property_reference_blob(state->palette_after_ctm_blob);
+	if (state->palette_before_ctm_blob)
+		drm_property_reference_blob(state->palette_before_ctm_blob);
 	state->mode_changed = false;
 	state->active_changed = false;
 	state->planes_changed = false;
@@ -2451,6 +2457,9 @@ void __drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc,
 					    struct drm_crtc_state *state)
 {
 	drm_property_unreference_blob(state->mode_blob);
+	drm_property_unreference_blob(state->ctm_blob);
+	drm_property_unreference_blob(state->palette_after_ctm_blob);
+	drm_property_unreference_blob(state->palette_before_ctm_blob);
 }
 EXPORT_SYMBOL(__drm_atomic_helper_crtc_destroy_state);
 
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index cc29df7..57c6650 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -268,6 +268,9 @@ struct drm_atomic_state;
  * 	update to ensure framebuffer cleanup isn't done too early
  * @adjusted_mode: for use by helpers and drivers to compute adjusted mode timings
  * @mode: current mode timings
+ * @palette_before_ctm_blob: blob for color corrections to be applied after CTM
+ * @palette_after_ctm_blob: blob for color corrections to be applied before CTM
+ * @ctm_blob: blob for CTM color correction
  * @event: optional pointer to a DRM event to signal upon completion of the
  * 	state update
  * @state: backpointer to global drm_atomic_state
@@ -308,6 +311,11 @@ struct drm_crtc_state {
 	/* blob property to expose current mode to atomic userspace */
 	struct drm_property_blob *mode_blob;
 
+	/* Color management blobs */
+	struct drm_property_blob *palette_before_ctm_blob;
+	struct drm_property_blob *palette_after_ctm_blob;
+	struct drm_property_blob *ctm_blob;
+
 	struct drm_pending_vblank_event *event;
 
 	struct drm_atomic_state *state;
-- 
1.9.1

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