[v11 09/12] drm/i915:Enabled Modeset when HDR Infoframe changes

[Uma Shankar <uma.shankar@intel.com>]

This patch enables modeset whenever HDR metadata
needs to be updated to sink.

v2: Addressed Shashank's review comments.

v3: Added Shashank's RB.

v4: Addressed Ville's review comments.

v5: Addressed Ville's review comments.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
---
 drivers/gpu/drm/i915/intel_atomic.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_atomic.c b/drivers/gpu/drm/i915/intel_atomic.c
index 58b8049..6b985e8 100644
--- a/drivers/gpu/drm/i915/intel_atomic.c
+++ b/drivers/gpu/drm/i915/intel_atomic.c
@@ -105,6 +105,16 @@ int intel_digital_connector_atomic_set_property(struct drm_connector *connector,
 	return -EINVAL;
 }
 
+static bool blob_equal(const struct drm_property_blob *a,
+		       const struct drm_property_blob *b)
+{
+	if (a && b)
+		return a->length == b->length &&
+			!memcmp(a->data, b->data, a->length);
+
+	return !a == !b;
+}
+
 int intel_digital_connector_atomic_check(struct drm_connector *conn,
 					 struct drm_connector_state *new_state)
 {
@@ -132,7 +142,9 @@ int intel_digital_connector_atomic_check(struct drm_connector *conn,
 	    new_conn_state->base.colorspace != old_conn_state->base.colorspace ||
 	    new_conn_state->base.picture_aspect_ratio != old_conn_state->base.picture_aspect_ratio ||
 	    new_conn_state->base.content_type != old_conn_state->base.content_type ||
-	    new_conn_state->base.scaling_mode != old_conn_state->base.scaling_mode)
+	    new_conn_state->base.scaling_mode != old_conn_state->base.scaling_mode ||
+	    !blob_equal(new_conn_state->base.hdr_output_metadata,
+			old_conn_state->base.hdr_output_metadata))
 		crtc_state->mode_changed = true;
 
 	return 0;
-- 
1.9.1

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