[PATCH 09/28] drm: Add Color ops capability property

[Uma Shankar]

Add capability property which a colorop can expose it's
hardware's abilities. It's a blob property that can be
filled with respective data structures depending on the
colorop. The user space is expected to read this property
and program the colorop accordingly.

Signed-off-by: Uma Shankar <uma.shan...@intel.com>
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.bo...@intel.com>
---
 drivers/gpu/drm/drm_atomic_uapi.c |  3 +++
 include/drm/drm_colorop.h         | 13 +++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/drivers/gpu/drm/drm_atomic_uapi.c 
b/drivers/gpu/drm/drm_atomic_uapi.c
index 9f6a3a1c8020..95f1df73209c 100644
--- a/drivers/gpu/drm/drm_atomic_uapi.c
+++ b/drivers/gpu/drm/drm_atomic_uapi.c
@@ -770,6 +770,9 @@ drm_atomic_colorop_get_property(struct drm_colorop *colorop,
                *val = state->curve_1d_type;
        } else if (property == colorop->data_property) {
                *val = (state->data) ? state->data->base.id : 0;
+       } else if (property == colorop->hw_caps_property) {
+               *val = state->hw_caps ?
+                       state->hw_caps->base.id : 0;
        } else {
                return -EINVAL;
        }
diff --git a/include/drm/drm_colorop.h b/include/drm/drm_colorop.h
index 5b8c36538491..f417e109c40a 100644
--- a/include/drm/drm_colorop.h
+++ b/include/drm/drm_colorop.h
@@ -59,6 +59,12 @@ struct drm_colorop_state {
         */
        enum drm_colorop_curve_1d_type curve_1d_type;
 
+       /**
+        * @hw_caps:
+        *
+        */
+       struct drm_property_blob *hw_caps;
+
        /**
         * @data:
         *
@@ -167,6 +173,13 @@ struct drm_colorop {
         */
        struct drm_property *bypass_property;
 
+       /**
+        * @hwlut_caps_property:
+        *
+        * Property to expose hardware lut capbilities.
+        */
+       struct drm_property *hw_caps_property;
+
        /**
         * @curve_1d_type:
         *
-- 
2.42.0