1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * Copyright 2021-2022 Bootlin
4  * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
5  */
6 
7 #ifndef _SUN6I_ISP_CAPTURE_H_
8 #define _SUN6I_ISP_CAPTURE_H_
9 
10 #include <media/v4l2-device.h>
11 
12 #define SUN6I_ISP_CAPTURE_NAME		"sun6i-isp-capture"
13 
14 #define SUN6I_ISP_CAPTURE_WIDTH_MIN	16
15 #define SUN6I_ISP_CAPTURE_WIDTH_MAX	3264
16 #define SUN6I_ISP_CAPTURE_HEIGHT_MIN	16
17 #define SUN6I_ISP_CAPTURE_HEIGHT_MAX	2448
18 
19 struct sun6i_isp_device;
20 
21 struct sun6i_isp_capture_format {
22 	u32	pixelformat;
23 	u8	output_format;
24 };
25 
26 #undef current
27 struct sun6i_isp_capture_state {
28 	struct list_head		queue;
29 	spinlock_t			lock; /* Queue and buffers lock. */
30 
31 	struct sun6i_isp_buffer		*pending;
32 	struct sun6i_isp_buffer		*current;
33 	struct sun6i_isp_buffer		*complete;
34 
35 	unsigned int			sequence;
36 	bool				streaming;
37 };
38 
39 struct sun6i_isp_capture {
40 	struct sun6i_isp_capture_state	state;
41 
42 	struct video_device		video_dev;
43 	struct vb2_queue		queue;
44 	struct mutex			lock; /* Queue lock. */
45 	struct media_pad		pad;
46 
47 	struct v4l2_format		format;
48 };
49 
50 /* Helpers */
51 
52 void sun6i_isp_capture_dimensions(struct sun6i_isp_device *isp_dev,
53 				  unsigned int *width, unsigned int *height);
54 void sun6i_isp_capture_format(struct sun6i_isp_device *isp_dev,
55 			      u32 *pixelformat);
56 
57 /* Format */
58 
59 const struct sun6i_isp_capture_format *
60 sun6i_isp_capture_format_find(u32 pixelformat);
61 
62 /* Capture */
63 
64 void sun6i_isp_capture_configure(struct sun6i_isp_device *isp_dev);
65 
66 /* State */
67 
68 void sun6i_isp_capture_state_update(struct sun6i_isp_device *isp_dev,
69 				    bool *update);
70 void sun6i_isp_capture_state_complete(struct sun6i_isp_device *isp_dev);
71 void sun6i_isp_capture_finish(struct sun6i_isp_device *isp_dev);
72 
73 /* Capture */
74 
75 int sun6i_isp_capture_setup(struct sun6i_isp_device *isp_dev);
76 void sun6i_isp_capture_cleanup(struct sun6i_isp_device *isp_dev);
77 
78 #endif
79