Add a blob property for plane CSC usage.
Signed-off-by: Uma Shankar <uma.shankar@xxxxxxxxx>
---
drivers/gpu/drm/drm_atomic.c | 10 ++++++++++
drivers/gpu/drm/drm_atomic_helper.c | 3 +++
drivers/gpu/drm/drm_mode_config.c | 7 +++++++
include/drm/drm_mode_config.h | 6 ++++++
include/drm/drm_plane.h | 8 ++++++++
5 files changed, 34 insertions(+)
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index e226c3b..ba88f50 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -769,6 +769,14 @@ static int drm_atomic_plane_set_property(struct drm_plane *plane,
val, -1, &replaced);
state->color_mgmt_changed |= replaced;
return ret;
+ } else if (property == config->plane_ctm_property) {
+ ret = drm_atomic_replace_property_blob_from_id(dev,
+ &state->ctm,
+ val,
+ sizeof(struct drm_color_ctm),
+ &replaced);
+ state->color_mgmt_changed |= replaced;
+ return ret;
} else {
return -EINVAL;
}
@@ -830,6 +838,8 @@ static int drm_atomic_plane_set_property(struct drm_plane *plane,
} else if (property == config->plane_degamma_lut_property) {
*val = (state->degamma_lut) ?
state->degamma_lut->base.id : 0;
+ } else if (property == config->plane_ctm_property) {
+ *val = (state->ctm) ? state->ctm->base.id : 0;
} else {
return -EINVAL;
}
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index fbc4c33..c6d08d3 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -3389,6 +3389,8 @@ void __drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane,
if (state->degamma_lut)
drm_property_blob_get(state->degamma_lut);
+ if (state->ctm)
+ drm_property_blob_get(state->ctm);
state->color_mgmt_changed = false;
}
EXPORT_SYMBOL(__drm_atomic_helper_plane_duplicate_state);
@@ -3436,6 +3438,7 @@ void __drm_atomic_helper_plane_destroy_state(struct drm_plane_state *state)
drm_crtc_commit_put(state->commit);
drm_property_blob_put(state->degamma_lut);
+ drm_property_blob_put(state->ctm);
}
EXPORT_SYMBOL(__drm_atomic_helper_plane_destroy_state);
diff --git a/drivers/gpu/drm/drm_mode_config.c b/drivers/gpu/drm/drm_mode_config.c
index c25342c..98068c5 100644
--- a/drivers/gpu/drm/drm_mode_config.c
+++ b/drivers/gpu/drm/drm_mode_config.c
@@ -358,6 +358,13 @@ static int drm_mode_create_standard_properties(struct drm_device *dev)
return -ENOMEM;
dev->mode_config.plane_degamma_lut_size_property = prop;
+ prop = drm_property_create(dev,
+ DRM_MODE_PROP_BLOB,
+ "PLANE_CTM", 0);
+ if (!prop)
+ return -ENOMEM;
+ dev->mode_config.plane_ctm_property = prop;
+
return 0;
}
diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h
index df362fb..2bee0b5 100644
--- a/include/drm/drm_mode_config.h
+++ b/include/drm/drm_mode_config.h
@@ -740,6 +740,12 @@ struct drm_mode_config {
* size of the degamma LUT as supported by the driver (read-only).
*/
struct drm_property *plane_degamma_lut_size_property;
+ /**
+ * @plane_ctm_property: Optional CRTC property to set the
+ * matrix used to convert colors after the lookup in the
+ * degamma LUT.
+ */
+ struct drm_property *plane_ctm_property;
/**
* @suggested_x_property: Optional connector property with a hint for
diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h
index 1cbba7c..8478d5f 100644
--- a/include/drm/drm_plane.h
+++ b/include/drm/drm_plane.h
@@ -132,6 +132,14 @@ struct drm_plane_state {
struct drm_property_blob *degamma_lut;
/**
+ * @ctm:
+ *
+ * Color transformation matrix. See drm_plane_enable_color_mgmt(). The
+ * blob (if not NULL) is a &struct drm_color_ctm.
+ */
+ struct drm_property_blob *ctm;
+
+ /**
* @commit: Tracks the pending commit to prevent use-after-free conditions,
* and for async plane updates.
*
--
1.7.9.5
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