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 */ 125