drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/sc/sc_1.0/ia_css_sc_param.h

   1 /*
   2  * Support for Intel Camera Imaging ISP subsystem.
   3  * Copyright (c) 2015, Intel Corporation.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  */
  14
  15 #ifndef __IA_CSS_SC_PARAM_H
  16 #define __IA_CSS_SC_PARAM_H
  17
  18 #include "type_support.h"
  19
  20 #ifdef ISP2401
  21 /* To position the shading center grid point on the center of output image,
  22  * one more grid cell is needed as margin. */
  23 #define SH_CSS_SCTBL_CENTERING_MARGIN   1
  24
  25 /* The shading table width and height are the number of grids, not cells. The last grid should be counted. */
  26 #define SH_CSS_SCTBL_LAST_GRID_COUNT    1
  27
  28 /* Number of horizontal grids per color in the shading table. */
  29 #define _ISP_SCTBL_WIDTH_PER_COLOR(input_width, deci_factor_log2) \
  30         (ISP_BQ_GRID_WIDTH(input_width, deci_factor_log2) + \
  31         SH_CSS_SCTBL_CENTERING_MARGIN + SH_CSS_SCTBL_LAST_GRID_COUNT)
  32
  33 /* Number of vertical grids per color in the shading table. */
  34 #define _ISP_SCTBL_HEIGHT(input_height, deci_factor_log2) \
  35         (ISP_BQ_GRID_HEIGHT(input_height, deci_factor_log2) + \
  36         SH_CSS_SCTBL_CENTERING_MARGIN + SH_CSS_SCTBL_LAST_GRID_COUNT)
  37
  38 /* Legacy API: Number of horizontal grids per color in the shading table. */
  39 #define _ISP_SCTBL_LEGACY_WIDTH_PER_COLOR(input_width, deci_factor_log2) \
  40         (ISP_BQ_GRID_WIDTH(input_width, deci_factor_log2) + SH_CSS_SCTBL_LAST_GRID_COUNT)
  41
  42 /* Legacy API: Number of vertical grids per color in the shading table. */
  43 #define _ISP_SCTBL_LEGACY_HEIGHT(input_height, deci_factor_log2) \
  44         (ISP_BQ_GRID_HEIGHT(input_height, deci_factor_log2) + SH_CSS_SCTBL_LAST_GRID_COUNT)
  45
  46 #endif
  47 /* SC (Shading Corrction) */
  48 struct sh_css_isp_sc_params {
  49         int32_t gain_shift;
  50 };
  51
  52 #ifdef ISP2401
  53 /* Number of horizontal slice times for interpolated gain:
  54  *
  55  * The start position of the internal frame does not match the start position of the shading table.
  56  * To get a vector of shading gains (interpolated horizontally and vertically)
  57  * which matches a vector on the internal frame,
  58  * vec_slice is used for 2 adjacent vectors of shading gains.
  59  * The number of shift times by vec_slice is 8.
  60  *     Max grid cell bqs to support the shading table centerting: N = 32
  61  *     CEIL_DIV(N-1, ISP_SLICE_NELEMS) = CEIL_DIV(31, 4) = 8
  62  */
  63 #define SH_CSS_SC_INTERPED_GAIN_HOR_SLICE_TIMES   8
  64
  65 struct sh_css_isp_sc_isp_config {
  66         uint32_t interped_gain_hor_slice_bqs[SH_CSS_SC_INTERPED_GAIN_HOR_SLICE_TIMES];
  67         uint32_t internal_frame_origin_y_bqs_on_sctbl;
  68 };
  69
  70 #endif
  71 #endif /* __IA_CSS_SC_PARAM_H */