1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Support for Intel Camera Imaging ISP subsystem.
4 * Copyright (c) 2015, Intel Corporation.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
13 * more details.
14 */
15
16#ifndef __IA_CSS_XNR3_PARAM_H
17#define __IA_CSS_XNR3_PARAM_H
18
19#include "type_support.h"
20#include "vmem.h" /* ISP2401: needed for VMEM_ARRAY */
21
22/* Scaling factor of the alpha values: which fixed-point value represents 1.0?
23 * It must be chosen such that 1/min_sigma still fits in an ISP vector
24 * element. */
25#define XNR_ALPHA_SCALE_LOG2        5
26#define XNR_ALPHA_SCALE_FACTOR      BIT(XNR_ALPHA_SCALE_LOG2)
27
28/* Scaling factor of the coring values on the ISP. */
29#define XNR_CORING_SCALE_LOG2       (ISP_VEC_ELEMBITS - 1)
30#define XNR_CORING_SCALE_FACTOR     BIT(XNR_CORING_SCALE_LOG2)
31
32/* Scaling factor of the blending strength on the ISP. */
33#define XNR_BLENDING_SCALE_LOG2     (ISP_VEC_ELEMBITS - 1)
34#define XNR_BLENDING_SCALE_FACTOR   BIT(XNR_BLENDING_SCALE_LOG2)
35
36/* XNR3 filter size. Must be 11x11, 9x9 or 5x5. */
37#define XNR_FILTER_SIZE             5
38
39/* XNR3 alpha (1/sigma) parameters on the ISP, expressed as a base (0) value
40 * for dark areas, and a scaled diff towards the value for bright areas. */
41struct sh_css_xnr3_alpha_params {
42	s32 y0;
43	s32 u0;
44	s32 v0;
45	s32 ydiff;
46	s32 udiff;
47	s32 vdiff;
48};
49
50/* XNR3 coring parameters on the ISP, expressed as a base (0) value
51 * for dark areas, and a scaled diff towards the value for bright areas. */
52struct sh_css_xnr3_coring_params {
53	s32 u0;
54	s32 v0;
55	s32 udiff;
56	s32 vdiff;
57};
58
59/* XNR3 blending strength on the ISP. */
60struct sh_css_xnr3_blending_params {
61	s32 strength;
62};
63
64/* XNR3 ISP parameters */
65struct sh_css_isp_xnr3_params {
66	struct sh_css_xnr3_alpha_params    alpha;
67	struct sh_css_xnr3_coring_params   coring;
68	struct sh_css_xnr3_blending_params blending;
69};
70
71/* ISP2401 */
72/*
73 * STRUCT sh_css_isp_xnr3_vmem_params
74 * -----------------------------------------------
75 * ISP VMEM parameters
76 */
77struct sh_css_isp_xnr3_vmem_params {
78	VMEM_ARRAY(x, ISP_VEC_NELEMS);
79	VMEM_ARRAY(a, ISP_VEC_NELEMS);
80	VMEM_ARRAY(b, ISP_VEC_NELEMS);
81	VMEM_ARRAY(c, ISP_VEC_NELEMS);
82};
83
84#endif  /*__IA_CSS_XNR3_PARAM_H */
85