sun6i_csi_capture.h

 1/* SPDX-License-Identifier: GPL-2.0+ */
 2/*
 3 * Copyright (c) 2011-2018 Magewell Electronics Co., Ltd. (Nanjing)
 4 * Author: Yong Deng <yong.deng@magewell.com>
 5 * Copyright 2021-2022 Bootlin
 6 * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
 7 */
 8
 9#ifndef _SUN6I_CAPTURE_H_
10#define _SUN6I_CAPTURE_H_
11
12#include <media/v4l2-device.h>
13
14#define SUN6I_CSI_CAPTURE_NAME	"sun6i-csi-capture"
15
16#define SUN6I_CSI_CAPTURE_WIDTH_MIN	32
17#define SUN6I_CSI_CAPTURE_WIDTH_MAX	4800
18#define SUN6I_CSI_CAPTURE_HEIGHT_MIN	32
19#define SUN6I_CSI_CAPTURE_HEIGHT_MAX	4800
20
21struct sun6i_csi_device;
22
23struct sun6i_csi_capture_format {
24	u32	pixelformat;
25	u8	output_format_field;
26	u8	output_format_frame;
27	bool	input_yuv_seq_invert;
28	bool	input_format_raw;
29	u32	hsize_len_factor;
30};
31
32struct sun6i_csi_capture_format_match {
33	u32	pixelformat;
34	u32	mbus_code;
35};
36
37#undef current
38struct sun6i_csi_capture_state {
39	struct list_head		queue;
40	spinlock_t			lock; /* Queue and buffers lock. */
41
42	struct sun6i_csi_buffer		*pending;
43	struct sun6i_csi_buffer		*current;
44	struct sun6i_csi_buffer		*complete;
45
46	unsigned int			sequence;
47	bool				streaming;
48	bool				setup;
49};
50
51struct sun6i_csi_capture {
52	struct sun6i_csi_capture_state	state;
53
54	struct video_device		video_dev;
55	struct vb2_queue		queue;
56	struct mutex			lock; /* Queue lock. */
57	struct media_pad		pad;
58
59	struct v4l2_format		format;
60};
61
62/* Helpers */
63
64void sun6i_csi_capture_dimensions(struct sun6i_csi_device *csi_dev,
65				  unsigned int *width, unsigned int *height);
66void sun6i_csi_capture_format(struct sun6i_csi_device *csi_dev,
67			      u32 *pixelformat, u32 *field);
68
69/* Format */
70
71const
72struct sun6i_csi_capture_format *sun6i_csi_capture_format_find(u32 pixelformat);
73
74/* Capture */
75
76void sun6i_csi_capture_configure(struct sun6i_csi_device *csi_dev);
77void sun6i_csi_capture_state_update(struct sun6i_csi_device *csi_dev);
78
79/* State */
80
81void sun6i_csi_capture_sync(struct sun6i_csi_device *csi_dev);
82void sun6i_csi_capture_frame_done(struct sun6i_csi_device *csi_dev);
83
84/* Capture */
85
86int sun6i_csi_capture_setup(struct sun6i_csi_device *csi_dev);
87void sun6i_csi_capture_cleanup(struct sun6i_csi_device *csi_dev);
88
89#endif