LXR linux/drivers/staging/media/atomisp/pci/ia_css

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * Support for Intel Camera Imaging ISP subsystem.
   4 * Copyright (c) 2015, Intel Corporation.
   5 *
   6 * This program is free software; you can redistribute it and/or modify it
   7 * under the terms and conditions of the GNU General Public License,
   8 * version 2, as published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope it will be useful, but WITHOUT
  11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13 * more details.
  14 */
  15
  16#ifndef __IA_CSS_TPG_H
  17#define __IA_CSS_TPG_H
  18
  19/* @file
  20 * This file contains support for the test pattern generator (TPG)
  21 */
  22
  23/* Enumerate the TPG IDs.
  24 */
  25enum ia_css_tpg_id {
  26        IA_CSS_TPG_ID0,
  27        IA_CSS_TPG_ID1,
  28        IA_CSS_TPG_ID2
  29};
  30
  31/**
  32 * Maximum number of TPG IDs.
  33 *
  34 * Make sure the value of this define gets changed to reflect the correct
  35 * number of ia_css_tpg_id enum if you add/delete an item in the enum.
  36 */
  37#define N_CSS_TPG_IDS (IA_CSS_TPG_ID2 + 1)
  38
  39/* Enumerate the TPG modes.
  40 */
  41enum ia_css_tpg_mode {
  42        IA_CSS_TPG_MODE_RAMP,
  43        IA_CSS_TPG_MODE_CHECKERBOARD,
  44        IA_CSS_TPG_MODE_FRAME_BASED_COLOR,
  45        IA_CSS_TPG_MODE_MONO
  46};
  47
  48/* @brief Configure the test pattern generator.
  49 *
  50 * Configure the Test Pattern Generator, the way these values are used to
  51 * generate the pattern can be seen in the HRT extension for the test pattern
  52 * generator:
  53 * devices/test_pat_gen/hrt/include/test_pat_gen.h: hrt_calc_tpg_data().
  54 *
  55 * This interface is deprecated, it is not portable -> move to input system API
  56 *
  57@code
  58unsigned int test_pattern_value(unsigned int x, unsigned int y)
  59{
  60 unsigned int x_val, y_val;
  61 if (x_delta > 0) (x_val = (x << x_delta) & x_mask;
  62 else (x_val = (x >> -x_delta) & x_mask;
  63 if (y_delta > 0) (y_val = (y << y_delta) & y_mask;
  64 else (y_val = (y >> -y_delta) & x_mask;
  65 return (x_val + y_val) & xy_mask;
  66}
  67@endcode
  68 */
  69struct ia_css_tpg_config {
  70        enum ia_css_tpg_id   id;
  71        enum ia_css_tpg_mode mode;
  72        unsigned int         x_mask;
  73        int                  x_delta;
  74        unsigned int         y_mask;
  75        int                  y_delta;
  76        unsigned int         xy_mask;
  77};
  78
  79#endif /* __IA_CSS_TPG_H */
  80