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
162
163
164
165
166
167
168
169
170
171
172
|
/*
* Driver for Renesas R-Car VIN
*
* Copyright (C) 2016 Renesas Electronics Corp.
* Copyright (C) 2011-2013 Renesas Solutions Corp.
* Copyright (C) 2013 Cogent Embedded, Inc., <source@cogentembedded.com>
* Copyright (C) 2008 Magnus Damm
*
* Based on the soc-camera rcar_vin driver
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#ifndef __RCAR_VIN__
#define __RCAR_VIN__
#include <media/v4l2-async.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-device.h>
#include <media/videobuf2-v4l2.h>
/* Number of HW buffers */
#define HW_BUFFER_NUM 3
/* Address alignment mask for HW buffers */
#define HW_BUFFER_MASK 0x7f
enum model_id {
RCAR_H1,
RCAR_M1,
RCAR_GEN2,
RCAR_GEN3,
};
/**
* STOPPED - No operation in progress
* RUNNING - Operation in progress have buffers
* STOPPING - Stopping operation
*/
enum rvin_dma_state {
STOPPED = 0,
RUNNING,
STOPPING,
};
/**
* struct rvin_video_format - Data format stored in memory
* @fourcc: Pixelformat
* @bpp: Bytes per pixel
*/
struct rvin_video_format {
u32 fourcc;
u8 bpp;
};
/**
* struct rvin_graph_entity - Video endpoint from async framework
* @asd: sub-device descriptor for async framework
* @subdev: subdevice matched using async framework
* @source_pad: source pad of remote subdevice
* @sink_pad: sink pad of remote subdevice
*/
struct rvin_graph_entity {
struct v4l2_async_subdev asd;
struct v4l2_subdev *subdev;
unsigned int source_pad;
unsigned int sink_pad;
};
/**
* struct rvin_info - Information about the particular VIN implementation
* @model: VIN model
* @max_width: max input width the VIN supports
* @max_height: max input height the VIN supports
*/
struct rvin_info {
enum model_id model;
unsigned int max_width;
unsigned int max_height;
};
/**
* struct rvin_dev - Renesas VIN device structure
* @dev: (OF) device
* @base: device I/O register space remapped to virtual memory
* @info: info about VIN instance
*
* @vdev: V4L2 video device associated with VIN
* @v4l2_dev: V4L2 device
* @ctrl_handler: V4L2 control handler
* @notifier: V4L2 asynchronous subdevs notifier
* @digital: entity in the DT for local digital subdevice
*
* @lock: protects @queue
* @queue: vb2 buffers queue
* @scratch: cpu address for scratch buffer
* @scratch_phys: physical address of the scratch buffer
*
* @qlock: protects @queue_buf, @buf_list, @sequence
* @state
* @queue_buf: Keeps track of buffers given to HW slot
* @buf_list: list of queued buffers
* @sequence: V4L2 buffers sequence number
* @state: keeps track of operation state
*
* @mbus_cfg: media bus configuration from DT
* @mbus_code: media bus format code
* @format: active V4L2 pixel format
*
* @crop: active cropping
* @compose: active composing
* @source: active size of the video source
* @std: active video standard of the video source
*/
struct rvin_dev {
struct device *dev;
void __iomem *base;
const struct rvin_info *info;
struct video_device vdev;
struct v4l2_device v4l2_dev;
struct v4l2_ctrl_handler ctrl_handler;
struct v4l2_async_notifier notifier;
struct rvin_graph_entity *digital;
struct mutex lock;
struct vb2_queue queue;
void *scratch;
dma_addr_t scratch_phys;
spinlock_t qlock;
struct vb2_v4l2_buffer *queue_buf[HW_BUFFER_NUM];
struct list_head buf_list;
unsigned int sequence;
enum rvin_dma_state state;
struct v4l2_mbus_config mbus_cfg;
u32 mbus_code;
struct v4l2_pix_format format;
struct v4l2_rect crop;
struct v4l2_rect compose;
struct v4l2_rect source;
v4l2_std_id std;
};
#define vin_to_source(vin) ((vin)->digital->subdev)
/* Debug */
#define vin_dbg(d, fmt, arg...) dev_dbg(d->dev, fmt, ##arg)
#define vin_info(d, fmt, arg...) dev_info(d->dev, fmt, ##arg)
#define vin_warn(d, fmt, arg...) dev_warn(d->dev, fmt, ##arg)
#define vin_err(d, fmt, arg...) dev_err(d->dev, fmt, ##arg)
int rvin_dma_register(struct rvin_dev *vin, int irq);
void rvin_dma_unregister(struct rvin_dev *vin);
int rvin_v4l2_register(struct rvin_dev *vin);
void rvin_v4l2_unregister(struct rvin_dev *vin);
const struct rvin_video_format *rvin_format_from_pixel(u32 pixelformat);
/* Cropping, composing and scaling */
void rvin_crop_scale_comp(struct rvin_dev *vin);
#endif
|
