1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Copyright (C) STMicroelectronics SA 2014
4  * Authors: Fabien Dessenne <fabien.dessenne@st.com> for STMicroelectronics.
5  */
6 
7 #define BDISP_HF_NB             64
8 #define BDISP_VF_NB             40
9 
10 /**
11  * struct bdisp_filter_h_spec - Horizontal filter specification
12  *
13  * @min:        min scale factor for this filter (6.10 fixed point)
14  * @max:        max scale factor for this filter (6.10 fixed point)
15  * @coef:       filter coefficients
16  */
17 struct bdisp_filter_h_spec {
18 	const u16 min;
19 	const u16 max;
20 	const u8 coef[BDISP_HF_NB];
21 };
22 /**
23  * struct bdisp_filter_v_spec - Vertical filter specification
24  *
25  * @min:	min scale factor for this filter (6.10 fixed point)
26  * @max:	max scale factor for this filter (6.10 fixed point)
27  * @coef:	filter coefficients
28  */
29 struct bdisp_filter_v_spec {
30 	const u16 min;
31 	const u16 max;
32 	const u8 coef[BDISP_VF_NB];
33 };
34 
35 /* RGB YUV 601 standard conversion */
36 static const u32 bdisp_rgb_to_yuv[] = {
37 		0x0e1e8bee, 0x08420419, 0xfb5ed471, 0x08004080,
38 };
39 
40 static const u32 bdisp_yuv_to_rgb[] = {
41 		0x3324a800, 0xe604ab9c, 0x0004a957, 0x32121eeb,
42 };
43