LXR linux/include/uapi/linux/am437x-vpfe.h

   1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2/*
   3 * Copyright (C) 2013 - 2014 Texas Instruments, Inc.
   4 *
   5 * Benoit Parrot <bparrot@ti.com>
   6 * Lad, Prabhakar <prabhakar.csengg@gmail.com>
   7 *
   8 * This program is free software; you may redistribute it and/or modify
   9 * it under the terms of the GNU General Public License as published by
  10 * the Free Software Foundation; version 2 of the License.
  11 *
  12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  16 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  17 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  18 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  19 * SOFTWARE.
  20 */
  21
  22#ifndef AM437X_VPFE_USER_H
  23#define AM437X_VPFE_USER_H
  24
  25#include <linux/videodev2.h>
  26
  27enum vpfe_ccdc_data_size {
  28        VPFE_CCDC_DATA_16BITS = 0,
  29        VPFE_CCDC_DATA_15BITS,
  30        VPFE_CCDC_DATA_14BITS,
  31        VPFE_CCDC_DATA_13BITS,
  32        VPFE_CCDC_DATA_12BITS,
  33        VPFE_CCDC_DATA_11BITS,
  34        VPFE_CCDC_DATA_10BITS,
  35        VPFE_CCDC_DATA_8BITS,
  36};
  37
  38/* enum for No of pixel per line to be avg. in Black Clamping*/
  39enum vpfe_ccdc_sample_length {
  40        VPFE_CCDC_SAMPLE_1PIXELS = 0,
  41        VPFE_CCDC_SAMPLE_2PIXELS,
  42        VPFE_CCDC_SAMPLE_4PIXELS,
  43        VPFE_CCDC_SAMPLE_8PIXELS,
  44        VPFE_CCDC_SAMPLE_16PIXELS,
  45};
  46
  47/* enum for No of lines in Black Clamping */
  48enum vpfe_ccdc_sample_line {
  49        VPFE_CCDC_SAMPLE_1LINES = 0,
  50        VPFE_CCDC_SAMPLE_2LINES,
  51        VPFE_CCDC_SAMPLE_4LINES,
  52        VPFE_CCDC_SAMPLE_8LINES,
  53        VPFE_CCDC_SAMPLE_16LINES,
  54};
  55
  56/* enum for Alaw gamma width */
  57enum vpfe_ccdc_gamma_width {
  58        VPFE_CCDC_GAMMA_BITS_15_6 = 0,  /* use bits 15-6 for gamma */
  59        VPFE_CCDC_GAMMA_BITS_14_5,
  60        VPFE_CCDC_GAMMA_BITS_13_4,
  61        VPFE_CCDC_GAMMA_BITS_12_3,
  62        VPFE_CCDC_GAMMA_BITS_11_2,
  63        VPFE_CCDC_GAMMA_BITS_10_1,
  64        VPFE_CCDC_GAMMA_BITS_09_0,      /* use bits 9-0 for gamma */
  65};
  66
  67/* structure for ALaw */
  68struct vpfe_ccdc_a_law {
  69        /* Enable/disable A-Law */
  70        unsigned char enable;
  71        /* Gamma Width Input */
  72        enum vpfe_ccdc_gamma_width gamma_wd;
  73};
  74
  75/* structure for Black Clamping */
  76struct vpfe_ccdc_black_clamp {
  77        unsigned char enable;
  78        /* only if bClampEnable is TRUE */
  79        enum vpfe_ccdc_sample_length sample_pixel;
  80        /* only if bClampEnable is TRUE */
  81        enum vpfe_ccdc_sample_line sample_ln;
  82        /* only if bClampEnable is TRUE */
  83        unsigned short start_pixel;
  84        /* only if bClampEnable is TRUE */
  85        unsigned short sgain;
  86        /* only if bClampEnable is FALSE */
  87        unsigned short dc_sub;
  88};
  89
  90/* structure for Black Level Compensation */
  91struct vpfe_ccdc_black_compensation {
  92        /* Constant value to subtract from Red component */
  93        char r;
  94        /* Constant value to subtract from Gr component */
  95        char gr;
  96        /* Constant value to subtract from Blue component */
  97        char b;
  98        /* Constant value to subtract from Gb component */
  99        char gb;
 100};
 101
 102/* Structure for CCDC configuration parameters for raw capture mode passed
 103 * by application
 104 */
 105struct vpfe_ccdc_config_params_raw {
 106        /* data size value from 8 to 16 bits */
 107        enum vpfe_ccdc_data_size data_sz;
 108        /* Structure for Optional A-Law */
 109        struct vpfe_ccdc_a_law alaw;
 110        /* Structure for Optical Black Clamp */
 111        struct vpfe_ccdc_black_clamp blk_clamp;
 112        /* Structure for Black Compensation */
 113        struct vpfe_ccdc_black_compensation blk_comp;
 114};
 115
 116/*
 117 *  Private IOCTL
 118 * VIDIOC_AM437X_CCDC_CFG - Set CCDC configuration for raw capture
 119 * This is an experimental ioctl that will change in future kernels. So use
 120 * this ioctl with care !
 121 **/
 122#define VIDIOC_AM437X_CCDC_CFG \
 123        _IOW('V', BASE_VIDIOC_PRIVATE + 1, void *)
 124
 125#endif          /* AM437X_VPFE_USER_H */
 126