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+/*
+ * OMAP3 ISP library - OMAP3 ISP statistics
+ *
+ * Copyright (C) 2010-2012 Ideas on board SPRL
+ *
+ * Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or (at
+ * your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __OMAP3ISP_STATS_H
+#define __OMAP3ISP_STATS_H
+
+#include <stdint.h>
+
+struct omap3_isp_device;
+
+/*
+ * struct omap3_isp_aewb_stats - OMAP3 ISP AEWB statistics
+ * @npix: Total number of accumulated pixels
+ * @unsat: Number of accumulated unsaturated pixels
+ * @accum: Accumulators
+ *
+ * The first 4 accumulators store the accumulated pixel values for the 4 color
+ * components, organized as follows.
+ *
+ * +---+---+
+ * | 0 | 1 |
+ * +---+---+
+ * | 2 | 3 |
+ * +---+---+
+ *
+ * The next 4 accumulators are similar, but store the accumulated saturated
+ * (clipped) pixel values.
+ */
+struct omap3_isp_aewb_stats {
+	uint32_t npix;
+	uint32_t unsat;
+	uint32_t accum[8];
+};
+
+/*
+ * omap3_isp_stats_enable - Enable or disable the statistics engine
+ * @isp: The ISP device
+ * @enable: Whether to enable to disable the statistics engine
+ *
+ * The statistics engine must be enabled prior to starting the video stream.
+ * When enabled, it statistics will be computed for every frame and delivered
+ * through the ISP aewb_ready() callback.
+ */
+void omap3_isp_stats_enable(struct omap3_isp_device *isp, bool enable);
+
+/*
+ * omap3_isp_stats_get_format - Get frame format at the statistics engine input
+ * @isp: The ISP device
+ * @format: Frame format
+ *
+ * Fill the format argument with the frame format at the statistics engine
+ * input.
+ */
+int omap3_isp_stats_get_format(struct omap3_isp_device *isp,
+			       struct v4l2_mbus_framefmt *format);
+/*
+ * omap3_isp_aewb_configure - Configure the AEWB statistics engine
+ * @isp: The ISP device
+ * @rect: The region of interest, relative to the sensor output frame size
+ * @saturation: Pixel saturation threshold value
+ */
+int omap3_isp_aewb_configure(struct omap3_isp_device *isp, struct v4l2_rect *rect,
+			     unsigned int saturation);
+
+#endif