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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 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 */