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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 modify9 * it under the terms of the GNU General Public License as published by10 * 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 OF14 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND15 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS16 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN17 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN18 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE19 * SOFTWARE.20 */21 22#ifndef AM437X_VPFE_USER_H23#define AM437X_VPFE_USER_H24 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 passed103 * by application104 */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 IOCTL118 * VIDIOC_AM437X_CCDC_CFG - Set CCDC configuration for raw capture119 * This is an experimental ioctl that will change in future kernels. So use120 * 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