[PATCH 01/10] drm/crtc: Add histogram properties

[Arun R Murthy <arun.r.murthy@intel.com>]

Add variables for histogram drm_property, its corrsponding crtc_state
variables and define the structure pointed by the blob property.

Signed-off-by: Arun R Murthy <arun.r.murthy@intel.com>
---
 include/drm/drm_crtc.h      | 48 +++++++++++++++++++++++++++++++++++++
 include/uapi/drm/drm_mode.h | 11 +++++++++
 2 files changed, 59 insertions(+)

diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 8b48a1974da3..3984cfa00cbf 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -274,6 +274,38 @@ struct drm_crtc_state {
 	 */
 	struct drm_property_blob *gamma_lut;
 
+	/**
+	 * @histogram_enable:
+	 *
+	 * This will be set if histogram is enabled for the CRTC.
+	 */
+	bool histogram_enable;
+
+	/**
+	 * @histogram_data:
+	 *
+	 * This will hold the pointer to the struct drm_histogram.
+	 * The element data in drm_histogram will hold the pointer to the
+	 * histogram data generated by the hardware.
+	 */
+	struct drm_property_blob *histogram_data;
+
+	/**
+	 * @histogram_-iet:
+	 *
+	 * This will hold the pointer to the struct drm_histogram.
+	 * The element data in drm_histogram will hold the pointer to the
+	 * histogram image enhancement generated by the algorithm that is to
+	 * be fed back to the hardware.
+	 */
+	struct drm_property_blob *histogram_iet;
+	/**
+	 * @histogram_iet_updates:
+	 *
+	 * Convey that the image enhanced data has been updated by the user
+	 */
+	bool histogram_iet_updated;
+
 	/**
 	 * @target_vblank:
 	 *
@@ -1088,6 +1120,22 @@ struct drm_crtc {
 	 */
 	struct drm_property *scaling_filter_property;
 
+	/**
+	 * @histogram_enable_property: Optional CRTC property for enabling or
+	 * disabling global histogram.
+	 */
+	struct drm_property *histogram_enable_property;
+	/**
+	 * @histogram_data_proeprty: Optional CRTC property for getting the
+	 * histogram blob data.
+	 */
+	struct drm_property *histogram_data_property;
+	/**
+	 * @histogram_iet_proeprty: Optional CRTC property for writing the
+	 * image enhanced blob data
+	 */
+	struct drm_property *histogram_iet_property;
+
 	/**
 	 * @state:
 	 *
diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h
index c082810c08a8..da4396f57ed1 100644
--- a/include/uapi/drm/drm_mode.h
+++ b/include/uapi/drm/drm_mode.h
@@ -1355,6 +1355,17 @@ struct drm_mode_closefb {
 	__u32 pad;
 };
 
+/**
+ * struct drm_histogram
+ * data_ptr: pointer to the array fo u32 data. This data can be histogram
+ * raw data or image enhanced data
+ * nr_elements: number of elements pointed by the data @data_ptr
+ */
+struct drm_histogram {
+	__u64 data_ptr;
+	__u32 nr_elements;
+};
+
 #if defined(__cplusplus)
 }
 #endif
-- 
2.25.1