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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) 2017 - 2018 Intel Corporation */

#ifndef __IPU3_UAPI_H
#define __IPU3_UAPI_H

#include <linux/types.h>

/* from /drivers/staging/media/ipu3/include/videodev2.h */

/* Vendor specific - used for IPU3 camera sub-system */
#define V4L2_META_FMT_IPU3_PARAMS	v4l2_fourcc('i', 'p', '3', 'p') /* IPU3 processing parameters */
#define V4L2_META_FMT_IPU3_STAT_3A	v4l2_fourcc('i', 'p', '3', 's') /* IPU3 3A statistics */

/* from include/uapi/linux/v4l2-controls.h */
#define V4L2_CID_INTEL_IPU3_BASE	(V4L2_CID_USER_BASE + 0x10c0)
#define V4L2_CID_INTEL_IPU3_MODE	(V4L2_CID_INTEL_IPU3_BASE + 1)

/******************* ipu3_uapi_stats_3a *******************/

#define IPU3_UAPI_MAX_STRIPES				2
#define IPU3_UAPI_MAX_BUBBLE_SIZE			10

#define IPU3_UAPI_GRID_START_MASK			((1 << 12) - 1)
#define IPU3_UAPI_GRID_Y_START_EN			(1 << 15)

/* controls generation of meta_data (like FF enable/disable) */
#define IPU3_UAPI_AWB_RGBS_THR_B_EN			(1 << 14)
#define IPU3_UAPI_AWB_RGBS_THR_B_INCL_SAT		(1 << 15)

/**
 * struct ipu3_uapi_grid_config - Grid plane config
 *
 * @width:	Grid horizontal dimensions, in number of grid blocks(cells).
 * @height:	Grid vertical dimensions, in number of grid cells.
 * @block_width_log2:	Log2 of the width of each cell in pixels.
 *			for (2^3, 2^4, 2^5, 2^6, 2^7), values [3, 7].
 * @block_height_log2:	Log2 of the height of each cell in pixels.
 *			for (2^3, 2^4, 2^5, 2^6, 2^7), values [3, 7].
 * @height_per_slice:	The number of blocks in vertical axis per slice.
 *			Default 2.
 * @x_start: X value of top left corner of Region of Interest(ROI).
 * @y_start: Y value of top left corner of ROI
 * @x_end: X value of bottom right corner of ROI
 * @y_end: Y value of bottom right corner of ROI
 *
 * Due to the size of total amount of collected data, most statistics
 * create a grid-based output, and the data is then divided into "slices".
 */
struct ipu3_uapi_grid_config {
	__u8 width;
	__u8 height;
	__u16 block_width_log2:3;
	__u16 block_height_log2:3;
	__u16 height_per_slice:8;
	__u16 x_start;
	__u16 y_start;
	__u16 x_end;
	__u16 y_end;
} __attribute__((packed));

/*
 * The grid based data is divided into "slices" called set, each slice of setX
 * refers to ipu3_uapi_grid_config width * height_per_slice.
 */
#define IPU3_UAPI_AWB_MAX_SETS				60
/* Based on grid size 80 * 60 and cell size 16 x 16 */
#define IPU3_UAPI_AWB_SET_SIZE				1280
#define IPU3_UAPI_AWB_MD_ITEM_SIZE			8
#define IPU3_UAPI_AWB_SPARE_FOR_BUBBLES \
	(IPU3_UAPI_MAX_BUBBLE_SIZE * IPU3_UAPI_MAX_STRIPES * \
	 IPU3_UAPI_AWB_MD_ITEM_SIZE)
#define IPU3_UAPI_AWB_MAX_BUFFER_SIZE \
	(IPU3_UAPI_AWB_MAX_SETS * \
	 (IPU3_UAPI_AWB_SET_SIZE + IPU3_UAPI_AWB_SPARE_FOR_BUBBLES))


/**
 * struct ipu3_uapi_awb_raw_buffer - AWB raw buffer
 *
 * @meta_data: buffer to hold auto white balance meta data which is
 *		the average values for each color channel.
 */
struct ipu3_uapi_awb_raw_buffer {
	__u8 meta_data[IPU3_UAPI_AWB_MAX_BUFFER_SIZE]
		__attribute__((aligned(32)));
} __attribute__((packed));

/**
 * struct ipu3_uapi_awb_config_s - AWB config
 *
 * @rgbs_thr_gr: gr threshold value.
 * @rgbs_thr_r: Red threshold value.
 * @rgbs_thr_gb: gb threshold value.
 * @rgbs_thr_b: Blue threshold value.
 * @grid: &ipu3_uapi_grid_config, the default grid resolution is 16x16 cells.
 *
 * The threshold is a saturation measure range [0, 8191], 8191 is default.
 * Values over threshold may be optionally rejected for averaging.
 */
struct ipu3_uapi_awb_config_s {
	__u16 rgbs_thr_gr;
	__u16 rgbs_thr_r;
	__u16 rgbs_thr_gb;
	__u16 rgbs_thr_b;
	struct ipu3_uapi_grid_config grid;
} __attribute__((aligned(32))) __attribute__((packed));

/**
 * struct ipu3_uapi_awb_config - AWB config wrapper
 *
 * @config: config for auto white balance as defined by &ipu3_uapi_awb_config_s
 */
struct ipu3_uapi_awb_config {
	struct ipu3_uapi_awb_config_s config __attribute__((aligned(32)));
} __attribute__((packed));

#define IPU3_UAPI_AE_COLORS				4	/* R, G, B, Y */
#define IPU3_UAPI_AE_BINS				256
#define IPU3_UAPI_AE_WEIGHTS				96

/**
 * struct ipu3_uapi_ae_raw_buffer - AE global weighted histogram
 *
 * @vals: Sum of IPU3_UAPI_AE_COLORS in cell
 *
 * Each histogram contains IPU3_UAPI_AE_BINS bins. Each bin has 24 bit unsigned
 * for counting the number of the pixel.
 */
struct ipu3_uapi_ae_raw_buffer {
	__u32 vals[IPU3_UAPI_AE_BINS * IPU3_UAPI_AE_COLORS];
} __attribute__((packed));

/**
 * struct ipu3_uapi_ae_raw_buffer_aligned - AE raw buffer
 *
 * @buff: &ipu3_uapi_ae_raw_buffer to hold full frame meta data.
 */
struct ipu3_uapi_ae_raw_buffer_aligned {
	struct ipu3_uapi_ae_raw_buffer buff __attribute__((aligned(32)));
} __attribute__((packed));

/**
 * struct ipu3_uapi_ae_grid_config - AE weight grid
 *
 * @width: Grid horizontal dimensions. Value: [16, 32], default 16.
 * @height: Grid vertical dimensions. Value: [16, 24], default 16.
 * @block_width_log2: Log2 of the width of the grid cell, value: [3, 7].
 * @block_height_log2: Log2 of the height of the grid cell, value: [3, 7].
 *			default is 3 (cell size 8x8), 4 cell per grid.
 * @reserved0: reserved
 * @ae_en: 0: does not write to &ipu3_uapi_ae_raw_buffer_aligned array,
 *		1: write normally.
 * @rst_hist_array: write 1 to trigger histogram array reset.
 * @done_rst_hist_array: flag for histogram array reset done.
 * @x_start: X value of top left corner of ROI, default 0.
 * @y_start: Y value of top left corner of ROI, default 0.
 * @x_end: X value of bottom right corner of ROI
 * @y_end: Y value of bottom right corner of ROI
 *
 * The AE block accumulates 4 global weighted histograms(R, G, B, Y) over
 * a defined ROI within the frame. The contribution of each pixel into the
 * histogram, defined by &ipu3_uapi_ae_weight_elem LUT, is indexed by a grid.
 */
struct ipu3_uapi_ae_grid_config {
	__u8 width;
	__u8 height;
	__u8 block_width_log2:4;
	__u8 block_height_log2:4;
	__u8 reserved0:5;
	__u8 ae_en:1;
	__u8 rst_hist_array:1;
	__u8 done_rst_hist_array:1;
	__u16 x_start;
	__u16 y_start;
	__u16 x_end;
	__u16 y_end;
} __attribute__((packed));

/**
 * struct ipu3_uapi_ae_weight_elem - AE weights LUT
 *
 * @cell0: weighted histogram grid value.
 * @cell1: weighted histogram grid value.
 * @cell2: weighted histogram grid value.
 * @cell3: weighted histogram grid value.
 * @cell4: weighted histogram grid value.
 * @cell5: weighted histogram grid value.
 * @cell6: weighted histogram grid value.
 * @cell7: weighted histogram grid value.
 *
 * Use weighted grid value to give a different contribution factor to each cell.
 * Precision u4, range [0, 15].
 */
struct ipu3_uapi_ae_weight_elem {
	__u32 cell0:4;
	__u32 cell1:4;
	__u32 cell2:4;
	__u32 cell3:4;
	__u32 cell4:4;
	__u32 cell5:4;
	__u32 cell6:4;
	__u32 cell7:4;
} __attribute__((packed));

/**
 * struct ipu3_uapi_ae_ccm - AE coefficients for WB and CCM
 *
 * @gain_gr: WB gain factor for the gr channels. Default 256.
 * @gain_r: WB gain factor for the r channel. Default 256.
 * @gain_b: WB gain factor for the b channel. Default 256.
 * @gain_gb: WB gain factor for the gb channels. Default 256.
 * @mat: 4x4 matrix that transforms Bayer quad output from WB to RGB+Y.
 *
 * Default:
 *	128, 0, 0, 0,
 *	0, 128, 0, 0,
 *	0, 0, 128, 0,
 *	0, 0, 0, 128,
 *
 * As part of the raw frame pre-process stage, the WB and color conversion need
 * to be applied to expose the impact of these gain operations.
 */
struct ipu3_uapi_ae_ccm {
	__u16 gain_gr;
	__u16 gain_r;
	__u16 gain_b;
	__u16 gain_gb;
	__s16 mat[16];
} __attribute__((packed));

/**
 * struct ipu3_uapi_ae_config - AE config
 *
 * @grid_cfg:	config for auto exposure statistics grid. See struct
 *		&ipu3_uapi_ae_grid_config
 * @weights:	&IPU3_UAPI_AE_WEIGHTS is based on 32x24 blocks in the grid.
 *		Each grid cell has a corresponding value in weights LUT called
 *		grid value, global histogram is updated based on grid value and
 *		pixel value.
 * @ae_ccm:	Color convert matrix pre-processing block.
 *
 * Calculate AE grid from image resolution, resample ae weights.
 */
struct ipu3_uapi_ae_config {
	struct ipu3_uapi_ae_grid_config grid_cfg __attribute__((aligned(32)));
	struct ipu3_uapi_ae_weight_elem weights[
			IPU3_UAPI_AE_WEIGHTS] __attribute__((aligned(32)));
	struct ipu3_uapi_ae_ccm ae_ccm __attribute__((aligned(32)));
} __attribute__((packed));

/**
 * struct ipu3_uapi_af_filter_config - AF 2D filter for contrast measurements
 *
 * @y1_coeff_0:	filter Y1, structure: 3x11, support both symmetry and
 *		anti-symmetry type. A12 is center, A1-A11 are neighbours.
 *		for analyzing low frequency content, used to calculate sum
 *		of gradients in x direction.
 * @y1_coeff_0.a1:	filter1 coefficients A1, u8, default 0.
 * @y1_coeff_0.a2:	filter1 coefficients A2, u8, default 0.
 * @y1_coeff_0.a3:	filter1 coefficients A3, u8, default 0.
 * @y1_coeff_0.a4:	filter1 coefficients A4, u8, default 0.
 * @y1_coeff_1:		Struct
 * @y1_coeff_1.a5:	filter1 coefficients A5, u8, default 0.
 * @y1_coeff_1.a6:	filter1 coefficients A6, u8, default 0.
 * @y1_coeff_1.a7:	filter1 coefficients A7, u8, default 0.
 * @y1_coeff_1.a8:	filter1 coefficients A8, u8, default 0.
 * @y1_coeff_2:		Struct
 * @y1_coeff_2.a9:	filter1 coefficients A9, u8, default 0.
 * @y1_coeff_2.a10:	filter1 coefficients A10, u8, default 0.
 * @y1_coeff_2.a11:	filter1 coefficients A11, u8, default 0.
 * @y1_coeff_2.a12:	filter1 coefficients A12, u8, default 128.
 * @y1_sign_vec:	Each bit corresponds to one coefficient sign bit,
 *			0: positive, 1: negative, default 0.
 * @y2_coeff_0:	Y2, same structure as Y1. For analyzing high frequency content.
 * @y2_coeff_0.a1:	filter2 coefficients A1, u8, default 0.
 * @y2_coeff_0.a2:	filter2 coefficients A2, u8, default 0.
 * @y2_coeff_0.a3:	filter2 coefficients A3, u8, default 0.
 * @y2_coeff_0.a4:	filter2 coefficients A4, u8, default 0.
 * @y2_coeff_1:	Struct
 * @y2_coeff_1.a5:	filter2 coefficients A5, u8, default 0.
 * @y2_coeff_1.a6:	filter2 coefficients A6, u8, default 0.
 * @y2_coeff_1.a7:	filter2 coefficients A7, u8, default 0.
 * @y2_coeff_1.a8:	filter2 coefficients A8, u8, default 0.
 * @y2_coeff_2:	Struct
 * @y2_coeff_2.a9:	filter1 coefficients A9, u8, default 0.
 * @y2_coeff_2.a10:	filter1 coefficients A10, u8, default 0.
 * @y2_coeff_2.a11:	filter1 coefficients A11, u8, default 0.
 * @y2_coeff_2.a12:	filter1 coefficients A12, u8, default 128.
 * @y2_sign_vec:	Each bit corresponds to one coefficient sign bit,
 *			0: positive, 1: negative, default 0.
 * @y_calc:	Pre-processing that converts Bayer quad to RGB+Y values to be
 *		used for building histogram. Range [0, 32], default 8.
 * Rule:
 *		y_gen_rate_gr + y_gen_rate_r + y_gen_rate_b + y_gen_rate_gb = 32
 *		A single Y is calculated based on sum of Gr/R/B/Gb based on
 *		their contribution ratio.
 * @y_calc.y_gen_rate_gr:	Contribution ratio Gr for Y
 * @y_calc.y_gen_rate_r:	Contribution ratio R for Y
 * @y_calc.y_gen_rate_b:	Contribution ratio B for Y
 * @y_calc.y_gen_rate_gb:	Contribution ratio Gb for Y
 * @nf:	The shift right value that should be applied during the Y1/Y2 filter to
 *	make sure the total memory needed is 2 bytes per grid cell.
 * @nf.reserved0:	reserved
 * @nf.y1_nf:	Normalization factor for the convolution coeffs of y1,
 *		should be log2 of the sum of the abs values of the filter
 *		coeffs, default 7 (2^7 = 128).
 * @nf.reserved1:	reserved
 * @nf.y2_nf:	Normalization factor for y2, should be log2 of the sum of the
 *		abs values of the filter coeffs.
 * @nf.reserved2:	reserved
 */
struct ipu3_uapi_af_filter_config {
	struct {
		__u8 a1;
		__u8 a2;
		__u8 a3;
		__u8 a4;
	} y1_coeff_0;
	struct {
		__u8 a5;
		__u8 a6;
		__u8 a7;
		__u8 a8;
	} y1_coeff_1;
	struct {
		__u8 a9;
		__u8 a10;
		__u8 a11;
		__u8 a12;
	} y1_coeff_2;

	__u32 y1_sign_vec;

	struct {
		__u8 a1;
		__u8 a2;
		__u8 a3;
		__u8 a4;
	} y2_coeff_0;
	struct {
		__u8 a5;
		__u8 a6;
		__u8 a7;
		__u8 a8;
	} y2_coeff_1;
	struct {
		__u8 a9;
		__u8 a10;
		__u8 a11;
		__u8 a12;
	} y2_coeff_2;

	__u32 y2_sign_vec;

	struct {
		__u8 y_gen_rate_gr;
		__u8 y_gen_rate_r;
		__u8 y_gen_rate_b;
		__u8 y_gen_rate_gb;
	} y_calc;

	struct {
		__u32 reserved0:8;
		__u32 y1_nf:4;
		__u32 reserved1:4;
		__u32 y2_nf:4;
		__u32 reserved2:12;
	} nf;
} __attribute__((packed));

#define IPU3_UAPI_AF_MAX_SETS				24
#define IPU3_UAPI_AF_MD_ITEM_SIZE			4
#define IPU3_UAPI_AF_SPARE_FOR_BUBBLES \
	(IPU3_UAPI_MAX_BUBBLE_SIZE * IPU3_UAPI_MAX_STRIPES * \
	 IPU3_UAPI_AF_MD_ITEM_SIZE)
#define IPU3_UAPI_AF_Y_TABLE_SET_SIZE			128
#define IPU3_UAPI_AF_Y_TABLE_MAX_SIZE \
	(IPU3_UAPI_AF_MAX_SETS * \
	 (IPU3_UAPI_AF_Y_TABLE_SET_SIZE + IPU3_UAPI_AF_SPARE_FOR_BUBBLES) * \
	 IPU3_UAPI_MAX_STRIPES)

/**
 * struct ipu3_uapi_af_raw_buffer - AF meta data
 *
 * @y_table:	Each color component will be convolved separately with filter1
 *		and filter2 and the result will be summed out and averaged for
 *		each cell.
 */
struct ipu3_uapi_af_raw_buffer {
	__u8 y_table[IPU3_UAPI_AF_Y_TABLE_MAX_SIZE] __attribute__((aligned(32)));
} __attribute__((packed));

/**
 * struct ipu3_uapi_af_config_s - AF config
 *
 * @filter_config: AF uses Y1 and Y2 filters as configured in
 *		   &ipu3_uapi_af_filter_config
 * @padding: paddings
 * @grid_cfg: See &ipu3_uapi_grid_config, default resolution 16x16. Use large
 *	      grid size for large image and vice versa.
 */
struct ipu3_uapi_af_config_s {
	struct ipu3_uapi_af_filter_config filter_config __attribute__((aligned(32)));
	__u8 padding[4];
	struct ipu3_uapi_grid_config grid_cfg __attribute__((aligned(32)));
} __attribute__((packed));

#define IPU3_UAPI_AWB_FR_MAX_SETS			24
#define IPU3_UAPI_AWB_FR_MD_ITEM_SIZE			8
#define IPU3_UAPI_AWB_FR_BAYER_TBL_SIZE			256
#define IPU3_UAPI_AWB_FR_SPARE_FOR_BUBBLES \
	(IPU3_UAPI_MAX_BUBBLE_SIZE * IPU3_UAPI_MAX_STRIPES * \
	 IPU3_UAPI_AWB_FR_MD_ITEM_SIZE)
#define IPU3_UAPI_AWB_FR_BAYER_TABLE_MAX_SIZE \
	(IPU3_UAPI_AWB_FR_MAX_SETS * \
	(IPU3_UAPI_AWB_FR_BAYER_TBL_SIZE + \
	 IPU3_UAPI_AWB_FR_SPARE_FOR_BUBBLES) * IPU3_UAPI_MAX_STRIPES)

/**
 * struct ipu3_uapi_awb_fr_raw_buffer - AWB filter response meta data
 *
 * @meta_data: Statistics output on the grid after convolving with 1D filter.
 */
struct ipu3_uapi_awb_fr_raw_buffer {
	__u8 meta_data[IPU3_UAPI_AWB_FR_BAYER_TABLE_MAX_SIZE]
		__attribute__((aligned(32)));
} __attribute__((packed));

/**
 * struct ipu3_uapi_awb_fr_config_s - AWB filter response config
 *
 * @grid_cfg:	grid config, default 16x16.
 * @bayer_coeff:	1D Filter 1x11 center symmetry/anti-symmetry.
 *			coefficients defaults { 0, 0, 0, 0, 0, 128 }.
 *			Applied on whole image for each Bayer channel separately
 *			by a weighted sum of its 11x1 neighbors.
 * @reserved1:	reserved
 * @bayer_sign:	sign of filter coefficients, default 0.
 * @bayer_nf:	normalization factor for the convolution coeffs, to make sure
 *		total memory needed is within pre-determined range.
 *		NF should be the log2 of the sum of the abs values of the
 *		filter coeffs, range [7, 14], default 7.
 * @reserved2:	reserved
 */
struct ipu3_uapi_awb_fr_config_s {
	struct ipu3_uapi_grid_config grid_cfg;
	__u8 bayer_coeff[6];
	__u16 reserved1;
	__u32 bayer_sign;
	__u8 bayer_nf;
	__u8 reserved2[7];
} __attribute__((packed));

/**
 * struct ipu3_uapi_4a_config - 4A config
 *
 * @awb_config: &ipu3_uapi_awb_config_s, default resolution 16x16
 * @ae_grd_config: auto exposure statistics &ipu3_uapi_ae_grid_config
 * @padding: paddings
 * @af_config: auto focus config &ipu3_uapi_af_config_s
 * @awb_fr_config: &ipu3_uapi_awb_fr_config_s, default resolution 16x16
 */
struct ipu3_uapi_4a_config {
	struct ipu3_uapi_awb_config_s awb_config __attribute__((aligned(32)));
	struct ipu3_uapi_ae_grid_config ae_grd_config;
	__u8 padding[20];
	struct ipu3_uapi_af_config_s af_config;
	struct ipu3_uapi_awb_fr_config_s awb_fr_config
		__attribute__((aligned(32)));
} __attribute__((packed));

/**
 * struct ipu3_uapi_bubble_info - Bubble info for host side debugging
 *
 * @num_of_stripes: A single frame is divided into several parts called stripes
 *		    due to limitation on line buffer memory.
 *		    The separation between the stripes is vertical. Each such
 *		    stripe is processed as a single frame by the ISP pipe.
 * @padding: padding bytes.
 * @num_sets: number of sets.
 * @padding1: padding bytes.
 * @size_of_set: set size.
 * @padding2: padding bytes.
 * @bubble_size: is the amount of padding in the bubble expressed in "sets".
 * @padding3: padding bytes.
 */
struct ipu3_uapi_bubble_info {
	__u32 num_of_stripes __attribute__((aligned(32)));
	__u8 padding[28];
	__u32 num_sets;
	__u8 padding1[28];
	__u32 size_of_set;
	__u8 padding2[28];
	__u32 bubble_size;
	__u8 padding3[28];
} __attribute__((packed));

/*
 * struct ipu3_uapi_stats_3a_bubble_info_per_stripe
 */
struct ipu3_uapi_stats_3a_bubble_info_per_stripe {
	struct ipu3_uapi_bubble_info awb[IPU3_UAPI_MAX_STRIPES];
	struct ipu3_uapi_bubble_info af[IPU3_UAPI_MAX_STRIPES];
	struct ipu3_uapi_bubble_info awb_fr[IPU3_UAPI_MAX_STRIPES];
} __attribute__((packed));

/**
 * struct ipu3_uapi_ff_status - Enable bits for each 3A fixed function
 *
 * @awb_en: auto white balance enable
 * @padding: padding config
 * @ae_en: auto exposure enable
 * @padding1: padding config
 * @af_en: auto focus enable
 * @padding2: padding config
 * @awb_fr_en: awb filter response enable bit
 * @padding3: padding config
 */
struct ipu3_uapi_ff_status {
	__u32 awb_en __attribute__((aligned(32)));
	__u8 padding[28];
	__u32 ae_en;
	__u8 padding1[28];
	__u32 af_en;
	__u8 padding2[28];
	__u32 awb_fr_en;
	__u8 padding3[28];
} __attribute__((packed));

/**
 * struct ipu3_uapi_stats_3a - 3A statistics
 *
 * @awb_raw_buffer: auto white balance meta data &ipu3_uapi_awb_raw_buffer
 * @ae_raw_buffer: auto exposure raw data &ipu3_uapi_ae_raw_buffer_aligned
 * @af_raw_buffer: &ipu3_uapi_af_raw_buffer for auto focus meta data
 * @awb_fr_raw_buffer: value as specified by &ipu3_uapi_awb_fr_raw_buffer
 * @stats_4a_config: 4a statistics config as defined by &ipu3_uapi_4a_config.
 * @ae_join_buffers: 1 to use ae_raw_buffer.
 * @padding: padding config
 * @stats_3a_bubble_per_stripe: a &ipu3_uapi_stats_3a_bubble_info_per_stripe
 * @stats_3a_status: 3a statistics status set in &ipu3_uapi_ff_status
 */
struct ipu3_uapi_stats_3a {
	struct ipu3_uapi_awb_raw_buffer awb_raw_buffer;
	struct ipu3_uapi_ae_raw_buffer_aligned
			ae_raw_buffer[IPU3_UAPI_MAX_STRIPES];
	struct ipu3_uapi_af_raw_buffer af_raw_buffer;
	struct ipu3_uapi_awb_fr_raw_buffer awb_fr_raw_buffer;
	struct ipu3_uapi_4a_config stats_4a_config;
	__u32 ae_join_buffers;
	__u8 padding[28];
	struct ipu3_uapi_stats_3a_bubble_info_per_stripe
			stats_3a_bubble_per_stripe;
	struct ipu3_uapi_ff_status stats_3a_status;
} __attribute__((packed));

/******************* ipu3_uapi_acc_param *******************/

#define IPU3_UAPI_ISP_VEC_ELEMS				64
#define IPU3_UAPI_ISP_TNR3_VMEM_LEN			9

#define IPU3_UAPI_BNR_LUT_SIZE				32

/* number of elements in gamma correction LUT */
#define IPU3_UAPI_GAMMA_CORR_LUT_ENTRIES		256

/* largest grid is 73x56, for grid_height_per_slice of 2, 73x2 = 146 */
#define IPU3_UAPI_SHD_MAX_CELLS_PER_SET			146
#define IPU3_UAPI_SHD_MAX_CFG_SETS			28
/* Normalization shift aka nf */
#define IPU3_UAPI_SHD_BLGR_NF_SHIFT			13
#define IPU3_UAPI_SHD_BLGR_NF_MASK			7

#define IPU3_UAPI_YUVP2_TCC_MACC_TABLE_ELEMENTS		16
#define IPU3_UAPI_YUVP2_TCC_INV_Y_LUT_ELEMENTS		14
#define IPU3_UAPI_YUVP2_TCC_GAIN_PCWL_LUT_ELEMENTS	258
#define IPU3_UAPI_YUVP2_TCC_R_SQR_LUT_ELEMENTS		24

#define IPU3_UAPI_ANR_LUT_SIZE				26
#define IPU3_UAPI_ANR_PYRAMID_SIZE			22

#define IPU3_UAPI_LIN_LUT_SIZE				64

/* Bayer Noise Reduction related structs */

/**
 * struct ipu3_uapi_bnr_static_config_wb_gains_config - White balance gains
 *
 * @gr:	white balance gain for Gr channel.
 * @r:	white balance gain for R channel.
 * @b:	white balance gain for B channel.
 * @gb:	white balance gain for Gb channel.
 *
 * Precision u3.13, range [0, 8). White balance correction is done by applying
 * a multiplicative gain to each color channels prior to BNR.
 */
struct ipu3_uapi_bnr_static_config_wb_gains_config {
	__u16 gr;
	__u16 r;
	__u16 b;
	__u16 gb;
} __attribute__((packed));

/**
 * struct ipu3_uapi_bnr_static_config_wb_gains_thr_config - Threshold config
 *
 * @gr:	white balance threshold gain for Gr channel.
 * @r:	white balance threshold gain for R channel.
 * @b:	white balance threshold gain for B channel.
 * @gb:	white balance threshold gain for Gb channel.
 *
 * Defines the threshold that specifies how different a defect pixel can be from
 * its neighbors.(used by dynamic defect pixel correction sub block)
 * Precision u4.4 range [0, 8].
 */
struct ipu3_uapi_bnr_static_config_wb_gains_thr_config {
	__u8 gr;
	__u8 r;
	__u8 b;
	__u8 gb;
} __attribute__((packed));

/**
 * struct ipu3_uapi_bnr_static_config_thr_coeffs_config - Noise model
 *				coefficients that controls noise threshold
 *
 * @cf:	Free coefficient for threshold calculation, range [0, 8191], default 0.
 * @reserved0:	reserved
 * @cg:	Gain coefficient for threshold calculation, [0, 31], default 8.
 * @ci:	Intensity coefficient for threshold calculation. range [0, 0x1f]
 *	default 6.
 * 	format: u3.2 (3 most significant bits represent whole number,
 *	2 least significant bits represent the fractional part
 *	with each count representing 0.25)
 *	e.g. 6 in binary format is 00110, that translates to 1.5
 * @reserved1:	reserved
 * @r_nf:	Normalization shift value for r^2 calculation, range [12, 20]
 *		where r is a radius of pixel [row, col] from centor of sensor.
 *		default 14.
 *
 * Threshold used to distinguish between noise and details.
 */
struct ipu3_uapi_bnr_static_config_thr_coeffs_config {
	__u32 cf:13;
	__u32 reserved0:3;
	__u32 cg:5;
	__u32 ci:5;
	__u32 reserved1:1;
	__u32 r_nf:5;
} __attribute__((packed));

/**
 * struct ipu3_uapi_bnr_static_config_thr_ctrl_shd_config - Shading config
 *
 * @gr:	Coefficient defines lens shading gain approximation for gr channel
 * @r:	Coefficient defines lens shading gain approximation for r channel
 * @b:	Coefficient defines lens shading gain approximation for b channel
 * @gb:	Coefficient defines lens shading gain approximation for gb channel
 *
 * Parameters for noise model (NM) adaptation of BNR due to shading correction.
 * All above have precision of u3.3, default to 0.
 */
struct ipu3_uapi_bnr_static_config_thr_ctrl_shd_config {
	__u8 gr;
	__u8 r;
	__u8 b;
	__u8 gb;
} __attribute__((packed));

/**
 * struct ipu3_uapi_bnr_static_config_opt_center_config - Optical center config
 *
 * @x_reset:	Reset value of X (col start - X center). Precision s12.0.
 * @reserved0:	reserved
 * @y_reset:	Reset value of Y (row start - Y center). Precision s12.0.
 * @reserved2:	reserved
 *
 * Distance from corner to optical center for NM adaptation due to shading
 * correction (should be calculated based on shading tables)
 */
struct ipu3_uapi_bnr_static_config_opt_center_config {
	__s32 x_reset:13;
	__u32 reserved0:3;
	__s32 y_reset:13;
	__u32 reserved2:3;
} __attribute__((packed));

/**
 * struct ipu3_uapi_bnr_static_config_lut_config - BNR square root lookup table
 *
 * @values: pre-calculated values of square root function.
 *
 * LUT implementation of square root operation.
 */
struct ipu3_uapi_bnr_static_config_lut_config {
	__u8 values[IPU3_UAPI_BNR_LUT_SIZE];
} __attribute__((packed));

/**
 * struct ipu3_uapi_bnr_static_config_bp_ctrl_config - Detect bad pixels (bp)
 *
 * @bp_thr_gain:	Defines the threshold that specifies how different a
 *			defect pixel can be from its neighbors. Threshold is
 *			dependent on de-noise threshold calculated by algorithm.
 *			Range [4, 31], default 4.
 * @reserved0:	reserved
 * @defect_mode:	Mode of addressed defect pixels,
 *			0 - single defect pixel is expected,
 *			1 - 2 adjacent defect pixels are expected, default 1.
 * @bp_gain:	Defines how 2nd derivation that passes through a defect pixel
 *		is different from 2nd derivations that pass through
 *		neighbor pixels. u4.2, range [0, 256], default 8.
 * @reserved1:	reserved
 * @w0_coeff:	Blending coefficient of defect pixel correction.
 *		Precision u4, range [0, 8], default 8.
 * @reserved2:	reserved
 * @w1_coeff:	Enable influence of incorrect defect pixel correction to be
 *		avoided. Precision u4, range [1, 8], default 8.
 * @reserved3:	reserved
 */
struct ipu3_uapi_bnr_static_config_bp_ctrl_config {
	__u32 bp_thr_gain:5;
	__u32 reserved0:2;
	__u32 defect_mode:1;
	__u32 bp_gain:6;
	__u32 reserved1:18;
	__u32 w0_coeff:4;
	__u32 reserved2:4;
	__u32 w1_coeff:4;
	__u32 reserved3:20;
} __attribute__((packed));

/**
 * struct ipu3_uapi_bnr_static_config_dn_detect_ctrl_config - Denoising config
 *
 * @alpha:	Weight of central element of smoothing filter.
 * @beta:	Weight of peripheral elements of smoothing filter, default 4.
 * @gamma:	Weight of diagonal elements of smoothing filter, default 4.
 *
 * beta and gamma parameter define the strength of the noise removal filter.
 *		All above has precision u0.4, range [0, 0xf]
 *		format: u0.4 (no / zero bits represent whole number,
 *		4 bits represent the fractional part
 *		with each count representing 0.0625)
 *		e.g. 0xf translates to 0.0625x15 = 0.9375
 *
 * @reserved0:	reserved
 * @max_inf:	Maximum increase of peripheral or diagonal element influence
 *		relative to the pre-defined value range: [0x5, 0xa]
 * @reserved1:	reserved
 * @gd_enable:	Green disparity enable control, 0 - disable, 1 - enable.
 * @bpc_enable:	Bad pixel correction enable control, 0 - disable, 1 - enable.
 * @bnr_enable:	Bayer noise removal enable control, 0 - disable, 1 - enable.
 * @ff_enable:	Fixed function enable, 0 - disable, 1 - enable.
 * @reserved2:	reserved
 */
struct ipu3_uapi_bnr_static_config_dn_detect_ctrl_config {
	__u32 alpha:4;
	__u32 beta:4;
	__u32 gamma:4;
	__u32 reserved0:4;
	__u32 max_inf:4;
	__u32 reserved1:7;
	__u32 gd_enable:1;
	__u32 bpc_enable:1;
	__u32 bnr_enable:1;
	__u32 ff_enable:1;
	__u32 reserved2:1;
} __attribute__((packed));

/**
 * struct ipu3_uapi_bnr_static_config_opt_center_sqr_config - BNR optical square
 *
 * @x_sqr_reset: Reset value of X^2.
 * @y_sqr_reset: Reset value of Y^2.
 *
 * Please note:
 *
 *    #. X and Y ref to
 *       &ipu3_uapi_bnr_static_config_opt_center_config
 *    #. Both structs are used in threshold formula to calculate r^2, where r
 *       is a radius of pixel [row, col] from centor of sensor.
 */
struct ipu3_uapi_bnr_static_config_opt_center_sqr_config {
	__u32 x_sqr_reset;
	__u32 y_sqr_reset;
} __attribute__((packed));

/**
 * struct ipu3_uapi_bnr_static_config - BNR static config
 *
 * @wb_gains:	white balance gains &ipu3_uapi_bnr_static_config_wb_gains_config
 * @wb_gains_thr:	white balance gains threshold as defined by
 *			&ipu3_uapi_bnr_static_config_wb_gains_thr_config
 * @thr_coeffs:	coefficients of threshold
 *		&ipu3_uapi_bnr_static_config_thr_coeffs_config
 * @thr_ctrl_shd:	control of shading threshold
 *			&ipu3_uapi_bnr_static_config_thr_ctrl_shd_config
 * @opt_center:	optical center &ipu3_uapi_bnr_static_config_opt_center_config
 *
 * Above parameters and opt_center_sqr are used for white balance and shading.
 *
 * @lut:	lookup table &ipu3_uapi_bnr_static_config_lut_config
 * @bp_ctrl:	detect and remove bad pixels as defined in struct
 *		&ipu3_uapi_bnr_static_config_bp_ctrl_config
 * @dn_detect_ctrl:	detect and remove noise.
 *			&ipu3_uapi_bnr_static_config_dn_detect_ctrl_config
 * @column_size:	The number of pixels in column.
 * @opt_center_sqr:	Reset value of r^2 to optical center, see
 *			&ipu3_uapi_bnr_static_config_opt_center_sqr_config.
 */
struct ipu3_uapi_bnr_static_config {
	struct ipu3_uapi_bnr_static_config_wb_gains_config wb_gains;
	struct ipu3_uapi_bnr_static_config_wb_gains_thr_config wb_gains_thr;
	struct ipu3_uapi_bnr_static_config_thr_coeffs_config thr_coeffs;
	struct ipu3_uapi_bnr_static_config_thr_ctrl_shd_config thr_ctrl_shd;
	struct ipu3_uapi_bnr_static_config_opt_center_config opt_center;
	struct ipu3_uapi_bnr_static_config_lut_config lut;
	struct ipu3_uapi_bnr_static_config_bp_ctrl_config bp_ctrl;
	struct ipu3_uapi_bnr_static_config_dn_detect_ctrl_config dn_detect_ctrl;
	__u32 column_size;
	struct ipu3_uapi_bnr_static_config_opt_center_sqr_config opt_center_sqr;
} __attribute__((packed));

/**
 * struct ipu3_uapi_bnr_static_config_green_disparity - Correct green disparity
 *
 * @gd_red:	Shading gain coeff for gr disparity level in bright red region.
 *		Precision u0.6, default 4(0.0625).
 * @reserved0:	reserved
 * @gd_green:	Shading gain coeff for gr disparity level in bright green
 *		region. Precision u0.6, default 4(0.0625).
 * @reserved1:	reserved
 * @gd_blue:	Shading gain coeff for gr disparity level in bright blue region.
 *		Precision u0.6, default 4(0.0625).
 * @reserved2:	reserved
 * @gd_black:	Maximal green disparity level in dark region (stronger disparity
 *		assumed to be image detail). Precision u14, default 80.
 * @reserved3:	reserved
 * @gd_shading:	Change maximal green disparity level according to square
 *		distance from image center.
 * @reserved4:	reserved
 * @gd_support:	Lower bound for the number of second green color pixels in
 *		current pixel neighborhood with less than threshold difference
 *		from it.
 *
 * The shading gain coeff of red, green, blue and black are used to calculate
 * threshold given a pixel's color value and its coordinates in the image.
 *
 * @reserved5:	reserved
 * @gd_clip:	Turn green disparity clip on/off, [0, 1], default 1.
 * @gd_central_weight:	Central pixel weight in 9 pixels weighted sum.
 */
struct ipu3_uapi_bnr_static_config_green_disparity {
	__u32 gd_red:6;
	__u32 reserved0:2;
	__u32 gd_green:6;
	__u32 reserved1:2;
	__u32 gd_blue:6;
	__u32 reserved2:10;
	__u32 gd_black:14;
	__u32 reserved3:2;
	__u32 gd_shading:7;
	__u32 reserved4:1;
	__u32 gd_support:2;
	__u32 reserved5:1;
	__u32 gd_clip:1;
	__u32 gd_central_weight:4;
} __attribute__((packed));

/**
 * struct ipu3_uapi_dm_config - De-mosaic parameters
 *
 * @dm_en:	de-mosaic enable.
 * @ch_ar_en:	Checker artifacts removal enable flag. Default 0.
 * @fcc_en:	False color correction (FCC) enable flag. Default 0.
 * @reserved0:	reserved
 * @frame_width:	do not care
 * @gamma_sc:	Sharpening coefficient (coefficient of 2-d derivation of
 *		complementary color in Hamilton-Adams interpolation).
 *		u5, range [0, 31], default 8.
 * @reserved1:	reserved
 * @lc_ctrl:	Parameter that controls weights of Chroma Homogeneity metric
 *		in calculation of final homogeneity metric.
 *		u5, range [0, 31], default 7.
 * @reserved2:	reserved
 * @cr_param1:	First parameter that defines Checker artifact removal
 *		feature gain. Precision u5, range [0, 31], default 8.
 * @reserved3:	reserved
 * @cr_param2:	Second parameter that defines Checker artifact removal
 *		feature gain. Precision u5, range [0, 31], default 8.
 * @reserved4:	reserved
 * @coring_param:	Defines power of false color correction operation.
 *			low for preserving edge colors, high for preserving gray
 *			edge artifacts.
 *			Precision u1.4, range [0, 1.9375], default 4 (0.25).
 * @reserved5:	reserved
 *
 * The demosaic fixed function block is responsible to covert Bayer(mosaiced)
 * images into color images based on demosaicing algorithm.
 */
struct ipu3_uapi_dm_config {
	__u32 dm_en:1;
	__u32 ch_ar_en:1;
	__u32 fcc_en:1;
	__u32 reserved0:13;
	__u32 frame_width:16;

	__u32 gamma_sc:5;
	__u32 reserved1:3;
	__u32 lc_ctrl:5;
	__u32 reserved2:3;
	__u32 cr_param1:5;
	__u32 reserved3:3;
	__u32 cr_param2:5;
	__u32 reserved4:3;

	__u32 coring_param:5;
	__u32 reserved5:27;
} __attribute__((packed));

/**
 * struct ipu3_uapi_ccm_mat_config - Color correction matrix
 *
 * @coeff_m11: CCM 3x3 coefficient, range [-65536, 65535]
 * @coeff_m12: CCM 3x3 coefficient, range [-8192, 8191]
 * @coeff_m13: CCM 3x3 coefficient, range [-32768, 32767]
 * @coeff_o_r: Bias 3x1 coefficient, range [-8191, 8181]
 * @coeff_m21: CCM 3x3 coefficient, range [-32767, 32767]
 * @coeff_m22: CCM 3x3 coefficient, range [-8192, 8191]
 * @coeff_m23: CCM 3x3 coefficient, range [-32768, 32767]
 * @coeff_o_g: Bias 3x1 coefficient, range [-8191, 8181]
 * @coeff_m31: CCM 3x3 coefficient, range [-32768, 32767]
 * @coeff_m32: CCM 3x3 coefficient, range [-8192, 8191]
 * @coeff_m33: CCM 3x3 coefficient, range [-32768, 32767]
 * @coeff_o_b: Bias 3x1 coefficient, range [-8191, 8181]
 *
 * Transform sensor specific color space to standard sRGB by applying 3x3 matrix
 * and adding a bias vector O. The transformation is basically a rotation and
 * translation in the 3-dimensional color spaces. Here are the defaults:
 *
 *	9775,	-2671,	1087,	0
 *	-1071,	8303,	815,	0
 *	-23,	-7887,	16103,	0
 */
struct ipu3_uapi_ccm_mat_config {
	__s16 coeff_m11;
	__s16 coeff_m12;
	__s16 coeff_m13;
	__s16 coeff_o_r;
	__s16 coeff_m21;
	__s16 coeff_m22;
	__s16 coeff_m23;
	__s16 coeff_o_g;
	__s16 coeff_m31;
	__s16 coeff_m32;
	__s16 coeff_m33;
	__s16 coeff_o_b;
} __attribute__((packed));

/**
 * struct ipu3_uapi_gamma_corr_ctrl - Gamma correction
 *
 * @enable: gamma correction enable.
 * @reserved: reserved
 */
struct ipu3_uapi_gamma_corr_ctrl {
	__u32 enable:1;
	__u32 reserved:31;
} __attribute__((packed));

/**
 * struct ipu3_uapi_gamma_corr_lut - Per-pixel tone mapping implemented as LUT.
 *
 * @lut:	256 tabulated values of the gamma function. LUT[1].. LUT[256]
 *		format u13.0, range [0, 8191].
 *
 * The tone mapping operation is done by a Piece wise linear graph
 * that is implemented as a lookup table(LUT). The pixel component input
 * intensity is the X-axis of the graph which is the table entry.
 */
struct ipu3_uapi_gamma_corr_lut {
	__u16 lut[IPU3_UAPI_GAMMA_CORR_LUT_ENTRIES];
} __attribute__((packed));

/**
 * struct ipu3_uapi_gamma_config - Gamma config
 *
 * @gc_ctrl: control of gamma correction &ipu3_uapi_gamma_corr_ctrl
 * @gc_lut: lookup table of gamma correction &ipu3_uapi_gamma_corr_lut
 */
struct ipu3_uapi_gamma_config {
	struct ipu3_uapi_gamma_corr_ctrl gc_ctrl __attribute__((aligned(32)));
	struct ipu3_uapi_gamma_corr_lut gc_lut __attribute__((aligned(32)));
} __attribute__((packed));

/**
 * struct ipu3_uapi_csc_mat_config - Color space conversion matrix config
 *
 * @coeff_c11:	Conversion matrix value, format s0.14, range [-16384, 16383].
 * @coeff_c12:	Conversion matrix value, format s0.14, range [-8192, 8191].
 * @coeff_c13:	Conversion matrix value, format s0.14, range [-16384, 16383].
 * @coeff_b1:	Bias 3x1 coefficient, s13.0 range [-8192, 8191].
 * @coeff_c21:	Conversion matrix value, format s0.14, range [-16384, 16383].
 * @coeff_c22:	Conversion matrix value, format s0.14, range [-8192, 8191].
 * @coeff_c23:	Conversion matrix value, format s0.14, range [-16384, 16383].
 * @coeff_b2:	Bias 3x1 coefficient, s13.0 range [-8192, 8191].
 * @coeff_c31:	Conversion matrix value, format s0.14, range [-16384, 16383].
 * @coeff_c32:	Conversion matrix value, format s0.14, range [-8192, 8191].
 * @coeff_c33:	Conversion matrix value, format s0.14, range [-16384, 16383].
 * @coeff_b3:	Bias 3x1 coefficient, s13.0 range [-8192, 8191].
 *
 * To transform each pixel from RGB to YUV (Y - brightness/luminance,
 * UV -chroma) by applying the pixel's values by a 3x3 matrix and adding an
 * optional bias 3x1 vector. Here are the default values for the matrix:
 *
 *	4898,   9617,  1867, 0,
 *	-2410, -4732,  7143, 0,
 *	10076, -8437, -1638, 0,
 *
 *	(i.e. for real number 0.299, 0.299 * 2^14 becomes 4898.)
 */
struct ipu3_uapi_csc_mat_config {
	__s16 coeff_c11;
	__s16 coeff_c12;
	__s16 coeff_c13;
	__s16 coeff_b1;
	__s16 coeff_c21;
	__s16 coeff_c22;
	__s16 coeff_c23;
	__s16 coeff_b2;
	__s16 coeff_c31;
	__s16 coeff_c32;
	__s16 coeff_c33;
	__s16 coeff_b3;
} __attribute__((packed));

/**
 * struct ipu3_uapi_cds_params - Chroma down-scaling
 *
 * @ds_c00:	range [0, 3]
 * @ds_c01:	range [0, 3]
 * @ds_c02:	range [0, 3]
 * @ds_c03:	range [0, 3]
 * @ds_c10:	range [0, 3]
 * @ds_c11:	range [0, 3]
 * @ds_c12:	range [0, 3]
 * @ds_c13:	range [0, 3]
 *
 * In case user does not provide, above 4x2 filter will use following defaults:
 *	1, 3, 3, 1,
 *	1, 3, 3, 1,
 *
 * @ds_nf:	Normalization factor for Chroma output downscaling filter,
 *		range 0,4, default 2.
 * @reserved0:	reserved
 * @csc_en:	Color space conversion enable
 * @uv_bin_output:	0: output YUV 4.2.0, 1: output YUV 4.2.2(default).
 * @reserved1:	reserved
 */
struct ipu3_uapi_cds_params {
	__u32 ds_c00:2;
	__u32 ds_c01:2;
	__u32 ds_c02:2;
	__u32 ds_c03:2;
	__u32 ds_c10:2;
	__u32 ds_c11:2;
	__u32 ds_c12:2;
	__u32 ds_c13:2;
	__u32 ds_nf:5;
	__u32 reserved0:3;
	__u32 csc_en:1;
	__u32 uv_bin_output:1;
	__u32 reserved1:6;
} __attribute__((packed));

/**
 * struct ipu3_uapi_shd_grid_config - Bayer shading(darkening) correction
 *
 * @width:	Grid horizontal dimensions, u8, [8, 128], default 73
 * @height:	Grid vertical dimensions, u8, [8, 128], default 56
 * @block_width_log2:	Log2 of the width of the grid cell in pixel count
 *			u4, [0, 15], default value 5.
 * @reserved0:	reserved
 * @block_height_log2:	Log2 of the height of the grid cell in pixel count
 *			u4, [0, 15], default value 6.
 * @reserved1:	reserved
 * @grid_height_per_slice:	SHD_MAX_CELLS_PER_SET/width.
 *				(with SHD_MAX_CELLS_PER_SET = 146).
 * @x_start:	X value of top left corner of sensor relative to ROI
 *		s13, [-4096, 0], default 0, only negative values.
 * @y_start:	Y value of top left corner of sensor relative to ROI
 *		s13, [-4096, 0], default 0, only negative values.
 */
struct ipu3_uapi_shd_grid_config {
	/* reg 0 */
	__u8 width;
	__u8 height;
	__u8 block_width_log2:3;
	__u8 reserved0:1;
	__u8 block_height_log2:3;
	__u8 reserved1:1;
	__u8 grid_height_per_slice;
	/* reg 1 */
	__s16 x_start;
	__s16 y_start;
} __attribute__((packed));

/**
 * struct ipu3_uapi_shd_general_config - Shading general config
 *
 * @init_set_vrt_offst_ul: set vertical offset,
 *			y_start >> block_height_log2 % grid_height_per_slice.
 * @shd_enable: shading enable.
 * @gain_factor: Gain factor. Shift calculated anti shading value. Precision u2.
 *		0x0 - gain factor [1, 5], means no shift interpolated value.
 *		0x1 - gain factor [1, 9], means shift interpolated by 1.
 *		0x2 - gain factor [1, 17], means shift interpolated by 2.
 * @reserved: reserved
 *
 * Correction is performed by multiplying a gain factor for each of the 4 Bayer
 * channels as a function of the pixel location in the sensor.
 */
struct ipu3_uapi_shd_general_config {
	__u32 init_set_vrt_offst_ul:8;
	__u32 shd_enable:1;
	__u32 gain_factor:2;
	__u32 reserved:21;
} __attribute__((packed));

/**
 * struct ipu3_uapi_shd_black_level_config - Black level correction
 *
 * @bl_r:	Bios values for green red. s11 range [-2048, 2047].
 * @bl_gr:	Bios values for green blue. s11 range [-2048, 2047].
 * @bl_gb:	Bios values for red. s11 range [-2048, 2047].
 * @bl_b:	Bios values for blue. s11 range [-2048, 2047].
 */
struct ipu3_uapi_shd_black_level_config {
	__s16 bl_r;
	__s16 bl_gr;
	__s16 bl_gb;
	__s16 bl_b;
} __attribute__((packed));

/**
 * struct ipu3_uapi_shd_config_static - Shading config static
 *
 * @grid:	shading grid config &ipu3_uapi_shd_grid_config
 * @general:	shading general config &ipu3_uapi_shd_general_config
 * @black_level:	black level config for shading correction as defined by
 *			&ipu3_uapi_shd_black_level_config
 */
struct ipu3_uapi_shd_config_static {
	struct ipu3_uapi_shd_grid_config grid;
	struct ipu3_uapi_shd_general_config general;
	struct ipu3_uapi_shd_black_level_config black_level;
} __attribute__((packed));

/**
 * struct ipu3_uapi_shd_lut - Shading gain factor lookup table.
 *
 * @sets: array
 * @sets.r_and_gr: Red and GreenR Lookup table.
 * @sets.r_and_gr.r: Red shading factor.
 * @sets.r_and_gr.gr: GreenR shading factor.
 * @sets.reserved1: reserved
 * @sets.gb_and_b: GreenB and Blue Lookup table.
 * @sets.gb_and_b.gb: GreenB shading factor.
 * @sets.gb_and_b.b: Blue shading factor.
 * @sets.reserved2: reserved
 *
 * Map to shading correction LUT register set.
 */
struct ipu3_uapi_shd_lut {
	struct {
		struct {
			__u16 r;
			__u16 gr;
		} r_and_gr[IPU3_UAPI_SHD_MAX_CELLS_PER_SET];
		__u8 reserved1[24];
		struct {
			__u16 gb;
			__u16 b;
		} gb_and_b[IPU3_UAPI_SHD_MAX_CELLS_PER_SET];
		__u8 reserved2[24];
	} sets[IPU3_UAPI_SHD_MAX_CFG_SETS];
} __attribute__((packed));

/**
 * struct ipu3_uapi_shd_config - Shading config
 *
 * @shd:	shading static config, see &ipu3_uapi_shd_config_static
 * @shd_lut:	shading lookup table &ipu3_uapi_shd_lut
 */
struct ipu3_uapi_shd_config {
	struct ipu3_uapi_shd_config_static shd __attribute__((aligned(32)));
	struct ipu3_uapi_shd_lut shd_lut __attribute__((aligned(32)));
} __attribute__((packed));

/* Image Enhancement Filter directed */

/**
 * struct ipu3_uapi_iefd_cux2 - IEFd Config Unit 2 parameters
 *
 * @x0:		X0 point of Config Unit, u9.0, default 0.
 * @x1:		X1 point of Config Unit, u9.0, default 0.
 * @a01:	Slope A of Config Unit, s4.4, default 0.
 * @b01:	Slope B, always 0.
 *
 * Calculate weight for blending directed and non-directed denoise elements
 *
 * Note:
 * Each instance of Config Unit needs X coordinate of n points and
 * slope A factor between points calculated by driver based on calibration
 * parameters.
 *
 * All CU inputs are unsigned, they will be converted to signed when written
 * to register, i.e. a01 will be written to 9 bit register in s4.4 format.
 * The data precision s4.4 means 4 bits for integer parts and 4 bits for the
 * fractional part, the first bit indicates positive or negative value.
 * For userspace software (commonly the imaging library), the computation for
 * the CU slope values should be based on the slope resolution 1/16 (binary
 * 0.0001 - the minimal interval value), the slope value range is [-256, +255].
 * This applies to &ipu3_uapi_iefd_cux6_ed, &ipu3_uapi_iefd_cux2_1,
 * &ipu3_uapi_iefd_cux2_1, &ipu3_uapi_iefd_cux4 and &ipu3_uapi_iefd_cux6_rad.
 */
struct ipu3_uapi_iefd_cux2 {
	__u32 x0:9;
	__u32 x1:9;
	__u32 a01:9;
	__u32 b01:5;
} __attribute__((packed));

/**
 * struct ipu3_uapi_iefd_cux6_ed - Calculate power of non-directed sharpening
 *				   element, Config Unit 6 for edge detail (ED).
 *
 * @x0:	X coordinate of point 0, u9.0, default 0.
 * @x1:	X coordinate of point 1, u9.0, default 0.
 * @x2:	X coordinate of point 2, u9.0, default 0.
 * @reserved0:	reserved
 * @x3:	X coordinate of point 3, u9.0, default 0.
 * @x4:	X coordinate of point 4, u9.0, default 0.
 * @x5:	X coordinate of point 5, u9.0, default 0.
 * @reserved1:	reserved
 * @a01:	slope A points 01, s4.4, default 0.
 * @a12:	slope A points 12, s4.4, default 0.
 * @a23:	slope A points 23, s4.4, default 0.
 * @reserved2:	reserved
 * @a34:	slope A points 34, s4.4, default 0.
 * @a45:	slope A points 45, s4.4, default 0.
 * @reserved3:	reserved
 * @b01:	slope B points 01, s4.4, default 0.
 * @b12:	slope B points 12, s4.4, default 0.
 * @b23:	slope B points 23, s4.4, default 0.
 * @reserved4:	reserved
 * @b34:	slope B points 34, s4.4, default 0.
 * @b45:	slope B points 45, s4.4, default 0.
 * @reserved5:	reserved.
 */
struct ipu3_uapi_iefd_cux6_ed {
	__u32 x0:9;
	__u32 x1:9;
	__u32 x2:9;
	__u32 reserved0:5;

	__u32 x3:9;
	__u32 x4:9;
	__u32 x5:9;
	__u32 reserved1:5;

	__u32 a01:9;
	__u32 a12:9;
	__u32 a23:9;
	__u32 reserved2:5;

	__u32 a34:9;
	__u32 a45:9;
	__u32 reserved3:14;

	__u32 b01:9;
	__u32 b12:9;
	__u32 b23:9;
	__u32 reserved4:5;

	__u32 b34:9;
	__u32 b45:9;
	__u32 reserved5:14;
} __attribute__((packed));

/**
 * struct ipu3_uapi_iefd_cux2_1 - Calculate power of non-directed denoise
 *				  element apply.
 * @x0: X0 point of Config Unit, u9.0, default 0.
 * @x1: X1 point of Config Unit, u9.0, default 0.
 * @a01: Slope A of Config Unit, s4.4, default 0.
 * @reserved1: reserved
 * @b01: offset B0 of Config Unit, u7.0, default 0.
 * @reserved2: reserved
 */
struct ipu3_uapi_iefd_cux2_1 {
	__u32 x0:9;
	__u32 x1:9;
	__u32 a01:9;
	__u32 reserved1:5;

	__u32 b01:8;
	__u32 reserved2:24;
} __attribute__((packed));

/**
 * struct ipu3_uapi_iefd_cux4 - Calculate power of non-directed sharpening
 *				element.
 *
 * @x0:	X0 point of Config Unit, u9.0, default 0.
 * @x1:	X1 point of Config Unit, u9.0, default 0.
 * @x2:	X2 point of Config Unit, u9.0, default 0.
 * @reserved0:	reserved
 * @x3:	X3 point of Config Unit, u9.0, default 0.
 * @a01:	Slope A0 of Config Unit, s4.4, default 0.
 * @a12:	Slope A1 of Config Unit, s4.4, default 0.
 * @reserved1:	reserved
 * @a23:	Slope A2 of Config Unit, s4.4, default 0.
 * @b01:	Offset B0 of Config Unit, s7.0, default 0.
 * @b12:	Offset B1 of Config Unit, s7.0, default 0.
 * @reserved2:	reserved
 * @b23:	Offset B2 of Config Unit, s7.0, default 0.
 * @reserved3: reserved
 */
struct ipu3_uapi_iefd_cux4 {
	__u32 x0:9;
	__u32 x1:9;
	__u32 x2:9;
	__u32 reserved0:5;

	__u32 x3:9;
	__u32 a01:9;
	__u32 a12:9;
	__u32 reserved1:5;

	__u32 a23:9;
	__u32 b01:8;
	__u32 b12:8;
	__u32 reserved2:7;

	__u32 b23:8;
	__u32 reserved3:24;
} __attribute__((packed));

/**
 * struct ipu3_uapi_iefd_cux6_rad - Radial Config Unit (CU)
 *
 * @x0:	x0 points of Config Unit radial, u8.0
 * @x1:	x1 points of Config Unit radial, u8.0
 * @x2:	x2 points of Config Unit radial, u8.0
 * @x3:	x3 points of Config Unit radial, u8.0
 * @x4:	x4 points of Config Unit radial, u8.0
 * @x5:	x5 points of Config Unit radial, u8.0
 * @reserved1: reserved
 * @a01:	Slope A of Config Unit radial, s7.8
 * @a12:	Slope A of Config Unit radial, s7.8
 * @a23:	Slope A of Config Unit radial, s7.8
 * @a34:	Slope A of Config Unit radial, s7.8
 * @a45:	Slope A of Config Unit radial, s7.8
 * @reserved2: reserved
 * @b01:	Slope B of Config Unit radial, s9.0
 * @b12:	Slope B of Config Unit radial, s9.0
 * @b23:	Slope B of Config Unit radial, s9.0
 * @reserved4: reserved
 * @b34:	Slope B of Config Unit radial, s9.0
 * @b45:	Slope B of Config Unit radial, s9.0
 * @reserved5: reserved
 */
struct ipu3_uapi_iefd_cux6_rad {
	__u32 x0:8;
	__u32 x1:8;
	__u32 x2:8;
	__u32 x3:8;

	__u32 x4:8;
	__u32 x5:8;
	__u32 reserved1:16;

	__u32 a01:16;
	__u32 a12:16;

	__u32 a23:16;
	__u32 a34:16;

	__u32 a45:16;
	__u32 reserved2:16;

	__u32 b01:10;
	__u32 b12:10;
	__u32 b23:10;
	__u32 reserved4:2;

	__u32 b34:10;
	__u32 b45:10;
	__u32 reserved5:12;
} __attribute__((packed));

/**
 * struct ipu3_uapi_yuvp1_iefd_cfg_units - IEFd Config Units parameters
 *
 * @cu_1: calculate weight for blending directed and
 *	  non-directed denoise elements. See &ipu3_uapi_iefd_cux2
 * @cu_ed: calculate power of non-directed sharpening element, see
 *	   &ipu3_uapi_iefd_cux6_ed
 * @cu_3: calculate weight for blending directed and
 *	  non-directed denoise elements. A &ipu3_uapi_iefd_cux2
 * @cu_5: calculate power of non-directed denoise element apply, use
 *	  &ipu3_uapi_iefd_cux2_1
 * @cu_6: calculate power of non-directed sharpening element. See
 *	  &ipu3_uapi_iefd_cux4
 * @cu_7: calculate weight for blending directed and
 *	  non-directed denoise elements. Use &ipu3_uapi_iefd_cux2
 * @cu_unsharp: Config Unit of unsharp &ipu3_uapi_iefd_cux4
 * @cu_radial: Config Unit of radial &ipu3_uapi_iefd_cux6_rad
 * @cu_vssnlm: Config Unit of vssnlm &ipu3_uapi_iefd_cux2
 */
struct ipu3_uapi_yuvp1_iefd_cfg_units {
	struct ipu3_uapi_iefd_cux2 cu_1;
	struct ipu3_uapi_iefd_cux6_ed cu_ed;
	struct ipu3_uapi_iefd_cux2 cu_3;
	struct ipu3_uapi_iefd_cux2_1 cu_5;
	struct ipu3_uapi_iefd_cux4 cu_6;
	struct ipu3_uapi_iefd_cux2 cu_7;
	struct ipu3_uapi_iefd_cux4 cu_unsharp;
	struct ipu3_uapi_iefd_cux6_rad cu_radial;
	struct ipu3_uapi_iefd_cux2 cu_vssnlm;
} __attribute__((packed));

/**
 * struct ipu3_uapi_yuvp1_iefd_config_s - IEFd config
 *
 * @horver_diag_coeff: Gradient compensation. Compared with vertical /
 *		       horizontal (0 / 90 degree), coefficient of diagonal (45 /
 *		       135 degree) direction should be corrected by approx.
 *		       1/sqrt(2).
 * @reserved0: reserved
 * @clamp_stitch: Slope to stitch between clamped and unclamped edge values
 * @reserved1: reserved
 * @direct_metric_update: Update coeff for direction metric
 * @reserved2: reserved
 * @ed_horver_diag_coeff: Radial Coefficient that compensates for
 *			  different distance for vertical/horizontal and
 *			  diagonal gradient calculation (approx. 1/sqrt(2))
 * @reserved3: reserved
 */
struct ipu3_uapi_yuvp1_iefd_config_s {
	__u32 horver_diag_coeff:7;
	__u32 reserved0:1;
	__u32 clamp_stitch:6;
	__u32 reserved1:2;
	__u32 direct_metric_update:5;
	__u32 reserved2:3;
	__u32 ed_horver_diag_coeff:7;
	__u32 reserved3:1;
} __attribute__((packed));

/**
 * struct ipu3_uapi_yuvp1_iefd_control - IEFd control
 *
 * @iefd_en:	Enable IEFd
 * @denoise_en:	Enable denoise
 * @direct_smooth_en:	Enable directional smooth
 * @rad_en:	Enable radial update
 * @vssnlm_en:	Enable VSSNLM output filter
 * @reserved:	reserved
 */
struct ipu3_uapi_yuvp1_iefd_control {
	__u32 iefd_en:1;
	__u32 denoise_en:1;
	__u32 direct_smooth_en:1;
	__u32 rad_en:1;
	__u32 vssnlm_en:1;
	__u32 reserved:27;
} __attribute__((packed));

/**
 * struct ipu3_uapi_sharp_cfg - Sharpening config
 *
 * @nega_lmt_txt: Sharpening limit for negative overshoots for texture.
 * @reserved0: reserved
 * @posi_lmt_txt: Sharpening limit for positive overshoots for texture.
 * @reserved1: reserved
 * @nega_lmt_dir: Sharpening limit for negative overshoots for direction (edge).
 * @reserved2: reserved
 * @posi_lmt_dir: Sharpening limit for positive overshoots for direction (edge).
 * @reserved3: reserved
 *
 * Fixed point type u13.0, range [0, 8191].
 */
struct ipu3_uapi_sharp_cfg {
	__u32 nega_lmt_txt:13;
	__u32 reserved0:19;
	__u32 posi_lmt_txt:13;
	__u32 reserved1:19;
	__u32 nega_lmt_dir:13;
	__u32 reserved2:19;
	__u32 posi_lmt_dir:13;
	__u32 reserved3:19;
} __attribute__((packed));

/**
 * struct ipu3_uapi_far_w - Sharpening config for far sub-group
 *
 * @dir_shrp:	Weight of wide direct sharpening, u1.6, range [0, 64], default 64.
 * @reserved0:	reserved
 * @dir_dns:	Weight of wide direct denoising, u1.6, range [0, 64], default 0.
 * @reserved1:	reserved
 * @ndir_dns_powr:	Power of non-direct denoising,
 *			Precision u1.6, range [0, 64], default 64.
 * @reserved2:	reserved
 */
struct ipu3_uapi_far_w {
	__u32 dir_shrp:7;
	__u32 reserved0:1;
	__u32 dir_dns:7;
	__u32 reserved1:1;
	__u32 ndir_dns_powr:7;
	__u32 reserved2:9;
} __attribute__((packed));

/**
 * struct ipu3_uapi_unsharp_cfg - Unsharp config
 *
 * @unsharp_weight: Unsharp mask blending weight.
 *		    u1.6, range [0, 64], default 16.
 *		    0 - disabled, 64 - use only unsharp.
 * @reserved0: reserved
 * @unsharp_amount: Unsharp mask amount, u4.5, range [0, 511], default 0.
 * @reserved1: reserved
 */
struct ipu3_uapi_unsharp_cfg {
	__u32 unsharp_weight:7;
	__u32 reserved0:1;
	__u32 unsharp_amount:9;
	__u32 reserved1:15;
} __attribute__((packed));

/**
 * struct ipu3_uapi_yuvp1_iefd_shrp_cfg - IEFd sharpness config
 *
 * @cfg: sharpness config &ipu3_uapi_sharp_cfg
 * @far_w: wide range config, value as specified by &ipu3_uapi_far_w:
 *	The 5x5 environment is separated into 2 sub-groups, the 3x3 nearest
 *	neighbors (8 pixels called Near), and the second order neighborhood
 *	around them (16 pixels called Far).
 * @unshrp_cfg: unsharpness config. &ipu3_uapi_unsharp_cfg
 */
struct ipu3_uapi_yuvp1_iefd_shrp_cfg {
	struct ipu3_uapi_sharp_cfg cfg;
	struct ipu3_uapi_far_w far_w;
	struct ipu3_uapi_unsharp_cfg unshrp_cfg;
} __attribute__((packed));

/**
 * struct ipu3_uapi_unsharp_coef0 - Unsharp mask coefficients
 *
 * @c00: Coeff11, s0.8, range [-255, 255], default 1.
 * @c01: Coeff12, s0.8, range [-255, 255], default 5.
 * @c02: Coeff13, s0.8, range [-255, 255], default 9.
 * @reserved: reserved
 *
 * Configurable registers for common sharpening support.
 */
struct ipu3_uapi_unsharp_coef0 {
	__u32 c00:9;
	__u32 c01:9;
	__u32 c02:9;
	__u32 reserved:5;
} __attribute__((packed));

/**
 * struct ipu3_uapi_unsharp_coef1 - Unsharp mask coefficients
 *
 * @c11: Coeff22, s0.8, range [-255, 255], default 29.
 * @c12: Coeff23, s0.8, range [-255, 255], default 55.
 * @c22: Coeff33, s0.8, range [-255, 255], default 96.
 * @reserved: reserved
 */
struct ipu3_uapi_unsharp_coef1 {
	__u32 c11:9;
	__u32 c12:9;
	__u32 c22:9;
	__u32 reserved:5;
} __attribute__((packed));

/**
 * struct ipu3_uapi_yuvp1_iefd_unshrp_cfg - Unsharp mask config
 *
 * @unsharp_coef0: unsharp coefficient 0 config. See &ipu3_uapi_unsharp_coef0
 * @unsharp_coef1: unsharp coefficient 1 config. See &ipu3_uapi_unsharp_coef1
 */
struct ipu3_uapi_yuvp1_iefd_unshrp_cfg {
	struct ipu3_uapi_unsharp_coef0 unsharp_coef0;
	struct ipu3_uapi_unsharp_coef1 unsharp_coef1;
} __attribute__((packed));

/**
 * struct ipu3_uapi_radial_reset_xy - Radial coordinate reset
 *
 * @x:	Radial reset of x coordinate. Precision s12, [-4095, 4095], default 0.
 * @reserved0:	reserved
 * @y:	Radial center y coordinate. Precision s12, [-4095, 4095], default 0.
 * @reserved1:	reserved
 */
struct ipu3_uapi_radial_reset_xy {
	__s32 x:13;
	__u32 reserved0:3;
	__s32 y:13;
	__u32 reserved1:3;
} __attribute__((packed));

/**
 * struct ipu3_uapi_radial_reset_x2 - Radial X^2 reset
 *
 * @x2:	Radial reset of x^2 coordinate. Precision u24, default 0.
 * @reserved:	reserved
 */
struct ipu3_uapi_radial_reset_x2 {
	__u32 x2:24;
	__u32 reserved:8;
} __attribute__((packed));

/**
 * struct ipu3_uapi_radial_reset_y2 - Radial Y^2 reset
 *
 * @y2:	Radial reset of y^2 coordinate. Precision u24, default 0.
 * @reserved:	reserved
 */
struct ipu3_uapi_radial_reset_y2 {
	__u32 y2:24;
	__u32 reserved:8;
} __attribute__((packed));

/**
 * struct ipu3_uapi_radial_cfg - Radial config
 *
 * @rad_nf: Radial. R^2 normalization factor is scale down by 2^ - (15 + scale)
 * @reserved0: reserved
 * @rad_inv_r2: Radial R^-2 normelized to (0.5..1).
 *		Precision u7, range [0, 127].
 * @reserved1: reserved
 */
struct ipu3_uapi_radial_cfg {
	__u32 rad_nf:4;
	__u32 reserved0:4;
	__u32 rad_inv_r2:7;
	__u32 reserved1:17;
} __attribute__((packed));

/**
 * struct ipu3_uapi_rad_far_w - Radial FAR sub-group
 *
 * @rad_dir_far_sharp_w: Weight of wide direct sharpening, u1.6, range [0, 64],
 *			 default 64.
 * @rad_dir_far_dns_w: Weight of wide direct denoising, u1.6, range [0, 64],
 *			 default 0.
 * @rad_ndir_far_dns_power: power of non-direct sharpening, u1.6, range [0, 64],
 *			 default 0.
 * @reserved: reserved
 */
struct ipu3_uapi_rad_far_w {
	__u32 rad_dir_far_sharp_w:8;
	__u32 rad_dir_far_dns_w:8;
	__u32 rad_ndir_far_dns_power:8;
	__u32 reserved:8;
} __attribute__((packed));

/**
 * struct ipu3_uapi_cu_cfg0 - Radius Config Unit cfg0 register
 *
 * @cu6_pow: Power of CU6. Power of non-direct sharpening, u3.4.
 * @reserved0: reserved
 * @cu_unsharp_pow: Power of unsharp mask, u2.4.
 * @reserved1: reserved
 * @rad_cu6_pow: Radial/corner CU6. Directed sharpening power, u3.4.
 * @reserved2: reserved
 * @rad_cu_unsharp_pow: Radial power of unsharp mask, u2.4.
 * @reserved3: reserved
 */
struct ipu3_uapi_cu_cfg0 {
	__u32 cu6_pow:7;
	__u32 reserved0:1;
	__u32 cu_unsharp_pow:7;
	__u32 reserved1:1;
	__u32 rad_cu6_pow:7;
	__u32 reserved2:1;
	__u32 rad_cu_unsharp_pow:6;
	__u32 reserved3:2;
} __attribute__((packed));

/**
 * struct ipu3_uapi_cu_cfg1 - Radius Config Unit cfg1 register
 *
 * @rad_cu6_x1: X1 point of Config Unit 6, precision u9.0.
 * @reserved0: reserved
 * @rad_cu_unsharp_x1: X1 point for Config Unit unsharp for radial/corner point
 *			precision u9.0.
 * @reserved1: reserved
 */
struct ipu3_uapi_cu_cfg1 {
	__u32 rad_cu6_x1:9;
	__u32 reserved0:1;
	__u32 rad_cu_unsharp_x1:9;
	__u32 reserved1:13;
} __attribute__((packed));

/**
 * struct ipu3_uapi_yuvp1_iefd_rad_cfg - IEFd parameters changed radially over
 *					 the picture plane.
 *
 * @reset_xy: reset xy value in radial calculation. &ipu3_uapi_radial_reset_xy
 * @reset_x2: reset x square value in radial calculation. See struct
 *	      &ipu3_uapi_radial_reset_x2
 * @reset_y2: reset y square value in radial calculation. See struct
 *	      &ipu3_uapi_radial_reset_y2
 * @cfg: radial config defined in &ipu3_uapi_radial_cfg
 * @rad_far_w: weight for wide range radial. &ipu3_uapi_rad_far_w
 * @cu_cfg0: configuration unit 0. See &ipu3_uapi_cu_cfg0
 * @cu_cfg1: configuration unit 1. See &ipu3_uapi_cu_cfg1
 */
struct ipu3_uapi_yuvp1_iefd_rad_cfg {
	struct ipu3_uapi_radial_reset_xy reset_xy;
	struct ipu3_uapi_radial_reset_x2 reset_x2;
	struct ipu3_uapi_radial_reset_y2 reset_y2;
	struct ipu3_uapi_radial_cfg cfg;
	struct ipu3_uapi_rad_far_w rad_far_w;
	struct ipu3_uapi_cu_cfg0 cu_cfg0;
	struct ipu3_uapi_cu_cfg1 cu_cfg1;
} __attribute__((packed));

/* Vssnlm - Very small scale non-local mean algorithm */

/**
 * struct ipu3_uapi_vss_lut_x - Vssnlm LUT x0/x1/x2
 *
 * @vs_x0: Vssnlm LUT x0, precision u8, range [0, 255], default 16.
 * @vs_x1: Vssnlm LUT x1, precision u8, range [0, 255], default 32.
 * @vs_x2: Vssnlm LUT x2, precision u8, range [0, 255], default 64.