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
  26 enum 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*/
  38 enum 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 */
  47 enum 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 */
  56 enum 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 */
  67 struct 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 */
  75 struct 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 */
  90 struct 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  */
 104 struct 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 */