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 #define SUN4I_FRONTEND_BUF_ADDR1_REG		0x024
26 #define SUN4I_FRONTEND_BUF_ADDR2_REG		0x028
27 
28 #define SUN4I_FRONTEND_TB_OFF0_REG		0x030
29 #define SUN4I_FRONTEND_TB_OFF1_REG		0x034
30 #define SUN4I_FRONTEND_TB_OFF2_REG		0x038
31 #define SUN4I_FRONTEND_TB_OFF_X1(x1)			((x1) << 16)
32 #define SUN4I_FRONTEND_TB_OFF_Y0(y0)			((y0) << 8)
33 #define SUN4I_FRONTEND_TB_OFF_X0(x0)			(x0)
34 
35 #define SUN4I_FRONTEND_LINESTRD0_REG		0x040
36 #define SUN4I_FRONTEND_LINESTRD1_REG		0x044
37 #define SUN4I_FRONTEND_LINESTRD2_REG		0x048
38 
39 /*
40  * In tiled mode, the stride is defined as the distance between the start of the
41  * end line of the current tile and the start of the first line in the next
42  * vertical tile.
43  *
44  * Tiles are represented in row-major order, thus the end line of current tile
45  * starts at: 31 * 32 (31 lines of 32 cols), the next vertical tile starts at:
46  * 32-bit-aligned-width * 32 and the distance is:
47  * 32 * (32-bit-aligned-width - 31).
48  */
49 #define SUN4I_FRONTEND_LINESTRD_TILED(stride)		(((stride) - 31) * 32)
50 
51 #define SUN4I_FRONTEND_INPUT_FMT_REG		0x04c
52 #define SUN4I_FRONTEND_INPUT_FMT_DATA_MOD_PLANAR	(0 << 8)
53 #define SUN4I_FRONTEND_INPUT_FMT_DATA_MOD_PACKED	(1 << 8)
54 #define SUN4I_FRONTEND_INPUT_FMT_DATA_MOD_SEMIPLANAR	(2 << 8)
55 #define SUN4I_FRONTEND_INPUT_FMT_DATA_MOD_MB32_PLANAR	(4 << 8)
56 #define SUN4I_FRONTEND_INPUT_FMT_DATA_MOD_MB32_SEMIPLANAR (6 << 8)
57 #define SUN4I_FRONTEND_INPUT_FMT_DATA_FMT_YUV444	(0 << 4)
58 #define SUN4I_FRONTEND_INPUT_FMT_DATA_FMT_YUV422	(1 << 4)
59 #define SUN4I_FRONTEND_INPUT_FMT_DATA_FMT_YUV420	(2 << 4)
60 #define SUN4I_FRONTEND_INPUT_FMT_DATA_FMT_YUV411	(3 << 4)
61 #define SUN4I_FRONTEND_INPUT_FMT_DATA_FMT_RGB		(5 << 4)
62 #define SUN4I_FRONTEND_INPUT_FMT_DATA_PS_UYVY		0
63 #define SUN4I_FRONTEND_INPUT_FMT_DATA_PS_YUYV		1
64 #define SUN4I_FRONTEND_INPUT_FMT_DATA_PS_VYUY		2
65 #define SUN4I_FRONTEND_INPUT_FMT_DATA_PS_YVYU		3
66 #define SUN4I_FRONTEND_INPUT_FMT_DATA_PS_UV		0
67 #define SUN4I_FRONTEND_INPUT_FMT_DATA_PS_VU		1
68 #define SUN4I_FRONTEND_INPUT_FMT_DATA_PS_BGRX		0
69 #define SUN4I_FRONTEND_INPUT_FMT_DATA_PS_XRGB		1
70 
71 #define SUN4I_FRONTEND_OUTPUT_FMT_REG		0x05c
72 #define SUN4I_FRONTEND_OUTPUT_FMT_DATA_FMT_BGRX8888	1
73 #define SUN4I_FRONTEND_OUTPUT_FMT_DATA_FMT_XRGB8888	2
74 
75 #define SUN4I_FRONTEND_CSC_COEF_REG(c)		(0x070 + (0x4 * (c)))
76 
77 #define SUN4I_FRONTEND_CH0_INSIZE_REG		0x100
78 #define SUN4I_FRONTEND_INSIZE(h, w)			((((h) - 1) << 16) | (((w) - 1)))
79 
80 #define SUN4I_FRONTEND_CH0_OUTSIZE_REG		0x104
81 #define SUN4I_FRONTEND_OUTSIZE(h, w)			((((h) - 1) << 16) | (((w) - 1)))
82 
83 #define SUN4I_FRONTEND_CH0_HORZFACT_REG		0x108
84 #define SUN4I_FRONTEND_HORZFACT(i, f)			(((i) << 16) | (f))
85 
86 #define SUN4I_FRONTEND_CH0_VERTFACT_REG		0x10c
87 #define SUN4I_FRONTEND_VERTFACT(i, f)			(((i) << 16) | (f))
88 
89 #define SUN4I_FRONTEND_CH0_HORZPHASE_REG	0x110
90 #define SUN4I_FRONTEND_CH0_VERTPHASE0_REG	0x114
91 #define SUN4I_FRONTEND_CH0_VERTPHASE1_REG	0x118
92 
93 #define SUN4I_FRONTEND_CH1_INSIZE_REG		0x200
94 #define SUN4I_FRONTEND_CH1_OUTSIZE_REG		0x204
95 #define SUN4I_FRONTEND_CH1_HORZFACT_REG		0x208
96 #define SUN4I_FRONTEND_CH1_VERTFACT_REG		0x20c
97 
98 #define SUN4I_FRONTEND_CH1_HORZPHASE_REG	0x210
99 #define SUN4I_FRONTEND_CH1_VERTPHASE0_REG	0x214
100 #define SUN4I_FRONTEND_CH1_VERTPHASE1_REG	0x218
101 
102 #define SUN4I_FRONTEND_CH0_HORZCOEF0_REG(i)	(0x400 + i * 4)
103 #define SUN4I_FRONTEND_CH0_HORZCOEF1_REG(i)	(0x480 + i * 4)
104 #define SUN4I_FRONTEND_CH0_VERTCOEF_REG(i)	(0x500 + i * 4)
105 #define SUN4I_FRONTEND_CH1_HORZCOEF0_REG(i)	(0x600 + i * 4)
106 #define SUN4I_FRONTEND_CH1_HORZCOEF1_REG(i)	(0x680 + i * 4)
107 #define SUN4I_FRONTEND_CH1_VERTCOEF_REG(i)	(0x700 + i * 4)
108 
109 struct clk;
110 struct device_node;
111 struct drm_plane;
112 struct regmap;
113 struct reset_control;
114 
115 struct sun4i_frontend_data {
116 	bool	has_coef_access_ctrl;
117 	bool	has_coef_rdy;
118 	u32	ch_phase[2];
119 };
120 
121 struct sun4i_frontend {
122 	struct list_head	list;
123 	struct device		*dev;
124 	struct device_node	*node;
125 
126 	struct clk		*bus_clk;
127 	struct clk		*mod_clk;
128 	struct clk		*ram_clk;
129 	struct regmap		*regs;
130 	struct reset_control	*reset;
131 
132 	const struct sun4i_frontend_data	*data;
133 };
134 
135 extern const struct of_device_id sun4i_frontend_of_table[];
136 extern const u32 sunxi_bt601_yuv2rgb_coef[12];
137 
138 int sun4i_frontend_init(struct sun4i_frontend *frontend);
139 void sun4i_frontend_exit(struct sun4i_frontend *frontend);
140 int sun4i_frontend_enable(struct sun4i_frontend *frontend);
141 
142 void sun4i_frontend_update_buffer(struct sun4i_frontend *frontend,
143 				  struct drm_plane *plane);
144 void sun4i_frontend_update_coord(struct sun4i_frontend *frontend,
145 				 struct drm_plane *plane);
146 int sun4i_frontend_update_formats(struct sun4i_frontend *frontend,
147 				  struct drm_plane *plane, uint32_t out_fmt);
148 bool sun4i_frontend_format_is_supported(uint32_t fmt, uint64_t modifier);
149 
150 #endif /* _SUN4I_FRONTEND_H_ */
151