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/*
* Support for Intel Camera Imaging ISP subsystem.
* Copyright (c) 2015, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*/
#ifndef __IA_CSS_SC_PARAM_H
#define __IA_CSS_SC_PARAM_H
#include "type_support.h"
#ifdef ISP2401
/* To position the shading center grid point on the center of output image,
* one more grid cell is needed as margin. */
#define SH_CSS_SCTBL_CENTERING_MARGIN 1
/* The shading table width and height are the number of grids, not cells. The last grid should be counted. */
#define SH_CSS_SCTBL_LAST_GRID_COUNT 1
/* Number of horizontal grids per color in the shading table. */
#define _ISP_SCTBL_WIDTH_PER_COLOR(input_width, deci_factor_log2) \
(ISP_BQ_GRID_WIDTH(input_width, deci_factor_log2) + \
SH_CSS_SCTBL_CENTERING_MARGIN + SH_CSS_SCTBL_LAST_GRID_COUNT)
/* Number of vertical grids per color in the shading table. */
#define _ISP_SCTBL_HEIGHT(input_height, deci_factor_log2) \
(ISP_BQ_GRID_HEIGHT(input_height, deci_factor_log2) + \
SH_CSS_SCTBL_CENTERING_MARGIN + SH_CSS_SCTBL_LAST_GRID_COUNT)
/* Legacy API: Number of horizontal grids per color in the shading table. */
#define _ISP_SCTBL_LEGACY_WIDTH_PER_COLOR(input_width, deci_factor_log2) \
(ISP_BQ_GRID_WIDTH(input_width, deci_factor_log2) + SH_CSS_SCTBL_LAST_GRID_COUNT)
/* Legacy API: Number of vertical grids per color in the shading table. */
#define _ISP_SCTBL_LEGACY_HEIGHT(input_height, deci_factor_log2) \
(ISP_BQ_GRID_HEIGHT(input_height, deci_factor_log2) + SH_CSS_SCTBL_LAST_GRID_COUNT)
#endif
/* SC (Shading Corrction) */
struct sh_css_isp_sc_params {
int32_t gain_shift;
};
#ifdef ISP2401
/* Number of horizontal slice times for interpolated gain:
*
* The start position of the internal frame does not match the start position of the shading table.
* To get a vector of shading gains (interpolated horizontally and vertically)
* which matches a vector on the internal frame,
* vec_slice is used for 2 adjacent vectors of shading gains.
* The number of shift times by vec_slice is 8.
* Max grid cell bqs to support the shading table centerting: N = 32
* CEIL_DIV(N-1, ISP_SLICE_NELEMS) = CEIL_DIV(31, 4) = 8
*/
#define SH_CSS_SC_INTERPED_GAIN_HOR_SLICE_TIMES 8
struct sh_css_isp_sc_isp_config {
uint32_t interped_gain_hor_slice_bqs[SH_CSS_SC_INTERPED_GAIN_HOR_SLICE_TIMES];
uint32_t internal_frame_origin_y_bqs_on_sctbl;
};
#endif
#endif /* __IA_CSS_SC_PARAM_H */
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