summaryrefslogtreecommitdiff
path: root/drivers/media/platform/sunxi/sun4i-csi/sun4i_csi.h
blob: a5f61ee0ec4df8b68d568986559194eb4b433e99 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * Copyright (C) 2016 NextThing Co
 * Copyright (C) 2016-2019 Bootlin
 *
 * Author: Maxime Ripard <maxime.ripard@bootlin.com>
 */

#ifndef _SUN4I_CSI_H_
#define _SUN4I_CSI_H_

#include <media/media-device.h>
#include <media/v4l2-async.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-device.h>
#include <media/v4l2-fwnode.h>
#include <media/videobuf2-core.h>

#define CSI_EN_REG			0x00

#define CSI_CFG_REG			0x04
#define CSI_CFG_INPUT_FMT(fmt)			((fmt) << 20)
#define CSI_CFG_OUTPUT_FMT(fmt)			((fmt) << 16)
#define CSI_CFG_YUV_DATA_SEQ(seq)		((seq) << 8)
#define CSI_CFG_VREF_POL(pol)			((pol) << 2)
#define CSI_CFG_HREF_POL(pol)			((pol) << 1)
#define CSI_CFG_PCLK_POL(pol)			((pol) << 0)

#define CSI_CPT_CTRL_REG		0x08
#define CSI_CPT_CTRL_VIDEO_START		BIT(1)
#define CSI_CPT_CTRL_IMAGE_START		BIT(0)

#define CSI_BUF_ADDR_REG(fifo, buf)	(0x10 + (0x8 * (fifo)) + (0x4 * (buf)))

#define CSI_BUF_CTRL_REG		0x28
#define CSI_BUF_CTRL_DBN			BIT(2)
#define CSI_BUF_CTRL_DBS			BIT(1)
#define CSI_BUF_CTRL_DBE			BIT(0)

#define CSI_INT_EN_REG			0x30
#define CSI_INT_FRM_DONE			BIT(1)
#define CSI_INT_CPT_DONE			BIT(0)

#define CSI_INT_STA_REG			0x34

#define CSI_WIN_CTRL_W_REG		0x40
#define CSI_WIN_CTRL_W_ACTIVE(w)		((w) << 16)

#define CSI_WIN_CTRL_H_REG		0x44
#define CSI_WIN_CTRL_H_ACTIVE(h)		((h) << 16)

#define CSI_BUF_LEN_REG			0x48

#define CSI_MAX_BUFFER		2
#define CSI_MAX_HEIGHT		8192U
#define CSI_MAX_WIDTH		8192U

enum csi_input {
	CSI_INPUT_RAW	= 0,
	CSI_INPUT_BT656	= 2,
	CSI_INPUT_YUV	= 3,
};

enum csi_output_raw {
	CSI_OUTPUT_RAW_PASSTHROUGH = 0,
};

enum csi_output_yuv {
	CSI_OUTPUT_YUV_422_PLANAR	= 0,
	CSI_OUTPUT_YUV_420_PLANAR	= 1,
	CSI_OUTPUT_YUV_422_UV		= 4,
	CSI_OUTPUT_YUV_420_UV		= 5,
	CSI_OUTPUT_YUV_422_MACRO	= 8,
	CSI_OUTPUT_YUV_420_MACRO	= 9,
};

enum csi_yuv_data_seq {
	CSI_YUV_DATA_SEQ_YUYV	= 0,
	CSI_YUV_DATA_SEQ_YVYU	= 1,
	CSI_YUV_DATA_SEQ_UYVY	= 2,
	CSI_YUV_DATA_SEQ_VYUY	= 3,
};

enum csi_subdev_pads {
	CSI_SUBDEV_SINK,
	CSI_SUBDEV_SOURCE,

	CSI_SUBDEV_PADS,
};

extern const struct v4l2_subdev_ops sun4i_csi_subdev_ops;

struct sun4i_csi_format {
	u32			mbus;
	u32			fourcc;
	enum csi_input		input;
	u32			output;
	unsigned int		num_planes;
	u8			bpp[3];
	unsigned int		hsub;
	unsigned int		vsub;
};

const struct sun4i_csi_format *sun4i_csi_find_format(const u32 *fourcc,
						     const u32 *mbus);

struct sun4i_csi {
	/* Device resources */
	struct device			*dev;

	const struct sun4i_csi_traits	*traits;

	void __iomem			*regs;
	struct clk			*bus_clk;
	struct clk			*isp_clk;
	struct clk			*ram_clk;
	struct reset_control		*rst;

	struct vb2_v4l2_buffer		*current_buf[CSI_MAX_BUFFER];

	struct {
		size_t			size;
		void			*vaddr;
		dma_addr_t		paddr;
	} scratch;

	struct v4l2_fwnode_bus_parallel	bus;

	/* Main Device */
	struct v4l2_device		v4l;
	struct media_device		mdev;
	struct video_device		vdev;
	struct media_pad		vdev_pad;
	struct v4l2_pix_format_mplane	fmt;

	/* Local subdev */
	struct v4l2_subdev		subdev;
	struct media_pad		subdev_pads[CSI_SUBDEV_PADS];
	struct v4l2_mbus_framefmt	subdev_fmt;

	/* V4L2 Async variables */
	struct v4l2_async_notifier	notifier;
	struct v4l2_subdev		*src_subdev;
	int				src_pad;

	/* V4L2 variables */
	struct mutex			lock;

	/* Videobuf2 */
	struct vb2_queue		queue;
	struct list_head		buf_list;
	spinlock_t			qlock;
	unsigned int			sequence;
};

int sun4i_csi_dma_register(struct sun4i_csi *csi, int irq);
void sun4i_csi_dma_unregister(struct sun4i_csi *csi);

int sun4i_csi_v4l2_register(struct sun4i_csi *csi);

#endif /* _SUN4I_CSI_H_ */