1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2017 Free Electrons
4  * Maxime Ripard <maxime.ripard@free-electrons.com>
5  */
6 
7 #ifndef _SUN4I_FRONTEND_H_
8 #define _SUN4I_FRONTEND_H_
9 
10 #include <linux/list.h>
11 
12 #define SUN4I_FRONTEND_EN_REG			0x000
13 #define SUN4I_FRONTEND_EN_EN				BIT(0)
14 
15 #define SUN4I_FRONTEND_FRM_CTRL_REG		0x004
16 #define SUN4I_FRONTEND_FRM_CTRL_COEF_ACCESS_CTRL	BIT(23)
17 #define SUN4I_FRONTEND_FRM_CTRL_FRM_START		BIT(16)
18 #define SUN4I_FRONTEND_FRM_CTRL_COEF_RDY		BIT(1)
19 #define SUN4I_FRONTEND_FRM_CTRL_REG_RDY			BIT(0)
20 
21 #define SUN4I_FRONTEND_BYPASS_REG		0x008
22 #define SUN4I_FRONTEND_BYPASS_CSC_EN			BIT(1)
23 
24 #define SUN4I_FRONTEND_BUF_ADDR0_REG		0x020
25 
26 #define SUN4I_FRONTEND_LINESTRD0_REG		0x040
27 
28 #define SUN4I_FRONTEND_INPUT_FMT_REG		0x04c
29 #define SUN4I_FRONTEND_INPUT_FMT_DATA_MOD(mod)		((mod) << 8)
30 #define SUN4I_FRONTEND_INPUT_FMT_DATA_FMT(fmt)		((fmt) << 4)
31 #define SUN4I_FRONTEND_INPUT_FMT_PS(ps)			(ps)
32 
33 #define SUN4I_FRONTEND_OUTPUT_FMT_REG		0x05c
34 #define SUN4I_FRONTEND_OUTPUT_FMT_DATA_FMT(fmt)		(fmt)
35 
36 #define SUN4I_FRONTEND_CH0_INSIZE_REG		0x100
37 #define SUN4I_FRONTEND_INSIZE(h, w)			((((h) - 1) << 16) | (((w) - 1)))
38 
39 #define SUN4I_FRONTEND_CH0_OUTSIZE_REG		0x104
40 #define SUN4I_FRONTEND_OUTSIZE(h, w)			((((h) - 1) << 16) | (((w) - 1)))
41 
42 #define SUN4I_FRONTEND_CH0_HORZFACT_REG		0x108
43 #define SUN4I_FRONTEND_HORZFACT(i, f)			(((i) << 16) | (f))
44 
45 #define SUN4I_FRONTEND_CH0_VERTFACT_REG		0x10c
46 #define SUN4I_FRONTEND_VERTFACT(i, f)			(((i) << 16) | (f))
47 
48 #define SUN4I_FRONTEND_CH0_HORZPHASE_REG	0x110
49 #define SUN4I_FRONTEND_CH0_VERTPHASE0_REG	0x114
50 #define SUN4I_FRONTEND_CH0_VERTPHASE1_REG	0x118
51 
52 #define SUN4I_FRONTEND_CH1_INSIZE_REG		0x200
53 #define SUN4I_FRONTEND_CH1_OUTSIZE_REG		0x204
54 #define SUN4I_FRONTEND_CH1_HORZFACT_REG		0x208
55 #define SUN4I_FRONTEND_CH1_VERTFACT_REG		0x20c
56 
57 #define SUN4I_FRONTEND_CH1_HORZPHASE_REG	0x210
58 #define SUN4I_FRONTEND_CH1_VERTPHASE0_REG	0x214
59 #define SUN4I_FRONTEND_CH1_VERTPHASE1_REG	0x218
60 
61 #define SUN4I_FRONTEND_CH0_HORZCOEF0_REG(i)	(0x400 + i * 4)
62 #define SUN4I_FRONTEND_CH0_HORZCOEF1_REG(i)	(0x480 + i * 4)
63 #define SUN4I_FRONTEND_CH0_VERTCOEF_REG(i)	(0x500 + i * 4)
64 #define SUN4I_FRONTEND_CH1_HORZCOEF0_REG(i)	(0x600 + i * 4)
65 #define SUN4I_FRONTEND_CH1_HORZCOEF1_REG(i)	(0x680 + i * 4)
66 #define SUN4I_FRONTEND_CH1_VERTCOEF_REG(i)	(0x700 + i * 4)
67 
68 struct clk;
69 struct device_node;
70 struct drm_plane;
71 struct regmap;
72 struct reset_control;
73 
74 struct sun4i_frontend {
75 	struct list_head	list;
76 	struct device		*dev;
77 	struct device_node	*node;
78 
79 	struct clk		*bus_clk;
80 	struct clk		*mod_clk;
81 	struct clk		*ram_clk;
82 	struct regmap		*regs;
83 	struct reset_control	*reset;
84 };
85 
86 extern const struct of_device_id sun4i_frontend_of_table[];
87 
88 int sun4i_frontend_init(struct sun4i_frontend *frontend);
89 void sun4i_frontend_exit(struct sun4i_frontend *frontend);
90 int sun4i_frontend_enable(struct sun4i_frontend *frontend);
91 
92 void sun4i_frontend_update_buffer(struct sun4i_frontend *frontend,
93 				  struct drm_plane *plane);
94 void sun4i_frontend_update_coord(struct sun4i_frontend *frontend,
95 				 struct drm_plane *plane);
96 int sun4i_frontend_update_formats(struct sun4i_frontend *frontend,
97 				  struct drm_plane *plane, uint32_t out_fmt);
98 
99 #endif /* _SUN4I_FRONTEND_H_ */
100