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

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