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f00add96 NS |
1 | /* |
2 | * Driver for Renesas R-Car VIN | |
3 | * | |
4 | * Copyright (C) 2016 Renesas Electronics Corp. | |
5 | * Copyright (C) 2011-2013 Renesas Solutions Corp. | |
6 | * Copyright (C) 2013 Cogent Embedded, Inc., <source@cogentembedded.com> | |
7 | * Copyright (C) 2008 Magnus Damm | |
8 | * | |
9 | * Based on the soc-camera rcar_vin driver | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify it | |
12 | * under the terms of the GNU General Public License as published by the | |
13 | * Free Software Foundation; either version 2 of the License, or (at your | |
14 | * option) any later version. | |
15 | */ | |
16 | ||
17 | #ifndef __RCAR_VIN__ | |
18 | #define __RCAR_VIN__ | |
19 | ||
20 | #include <media/v4l2-async.h> | |
21 | #include <media/v4l2-ctrls.h> | |
22 | #include <media/v4l2-dev.h> | |
23 | #include <media/v4l2-device.h> | |
24 | #include <media/videobuf2-v4l2.h> | |
25 | ||
26 | /* Number of HW buffers */ | |
27 | #define HW_BUFFER_NUM 3 | |
28 | ||
29 | /* Address alignment mask for HW buffers */ | |
30 | #define HW_BUFFER_MASK 0x7f | |
31 | ||
32 | enum chip_id { | |
f00add96 NS |
33 | RCAR_H1, |
34 | RCAR_M1, | |
23eb2c86 | 35 | RCAR_GEN2, |
f00add96 NS |
36 | }; |
37 | ||
38 | /** | |
39 | * STOPPED - No operation in progress | |
40 | * RUNNING - Operation in progress have buffers | |
41 | * STALLED - No operation in progress have no buffers | |
42 | * STOPPING - Stopping operation | |
43 | */ | |
44 | enum rvin_dma_state { | |
45 | STOPPED = 0, | |
46 | RUNNING, | |
47 | STALLED, | |
48 | STOPPING, | |
49 | }; | |
50 | ||
51 | /** | |
52 | * struct rvin_source_fmt - Source information | |
53 | * @code: Media bus format from source | |
54 | * @width: Width from source | |
55 | * @height: Height from source | |
56 | */ | |
57 | struct rvin_source_fmt { | |
58 | u32 code; | |
59 | u32 width; | |
60 | u32 height; | |
61 | }; | |
62 | ||
63 | /** | |
64 | * struct rvin_video_format - Data format stored in memory | |
65 | * @fourcc: Pixelformat | |
66 | * @bpp: Bytes per pixel | |
67 | */ | |
68 | struct rvin_video_format { | |
69 | u32 fourcc; | |
70 | u8 bpp; | |
71 | }; | |
72 | ||
83fba2c0 NS |
73 | /** |
74 | * struct rvin_graph_entity - Video endpoint from async framework | |
75 | * @asd: sub-device descriptor for async framework | |
76 | * @subdev: subdevice matched using async framework | |
77 | */ | |
f00add96 | 78 | struct rvin_graph_entity { |
f00add96 NS |
79 | struct v4l2_async_subdev asd; |
80 | struct v4l2_subdev *subdev; | |
81 | }; | |
82 | ||
83 | /** | |
84 | * struct rvin_dev - Renesas VIN device structure | |
85 | * @dev: (OF) device | |
86 | * @base: device I/O register space remapped to virtual memory | |
87 | * @chip: type of VIN chip | |
88 | * @mbus_cfg media bus configuration | |
89 | * | |
90 | * @vdev: V4L2 video device associated with VIN | |
91 | * @v4l2_dev: V4L2 device | |
fa037403 | 92 | * @src_pad_idx: source pad index for media controller drivers |
f00add96 NS |
93 | * @ctrl_handler: V4L2 control handler |
94 | * @notifier: V4L2 asynchronous subdevs notifier | |
4869ce9d | 95 | * @digital: entity in the DT for local digital subdevice |
f00add96 NS |
96 | * |
97 | * @lock: protects @queue | |
98 | * @queue: vb2 buffers queue | |
f00add96 NS |
99 | * |
100 | * @qlock: protects @queue_buf, @buf_list, @continuous, @sequence | |
101 | * @state | |
102 | * @queue_buf: Keeps track of buffers given to HW slot | |
103 | * @buf_list: list of queued buffers | |
104 | * @continuous: tracks if active operation is continuous or single mode | |
105 | * @sequence: V4L2 buffers sequence number | |
106 | * @state: keeps track of operation state | |
107 | * | |
108 | * @source: active format from the video source | |
109 | * @format: active V4L2 pixel format | |
110 | * | |
111 | * @crop: active cropping | |
112 | * @compose: active composing | |
113 | */ | |
114 | struct rvin_dev { | |
115 | struct device *dev; | |
116 | void __iomem *base; | |
117 | enum chip_id chip; | |
118 | struct v4l2_mbus_config mbus_cfg; | |
119 | ||
120 | struct video_device vdev; | |
121 | struct v4l2_device v4l2_dev; | |
fa037403 | 122 | int src_pad_idx; |
f00add96 NS |
123 | struct v4l2_ctrl_handler ctrl_handler; |
124 | struct v4l2_async_notifier notifier; | |
4869ce9d | 125 | struct rvin_graph_entity digital; |
f00add96 NS |
126 | |
127 | struct mutex lock; | |
128 | struct vb2_queue queue; | |
f00add96 NS |
129 | |
130 | spinlock_t qlock; | |
131 | struct vb2_v4l2_buffer *queue_buf[HW_BUFFER_NUM]; | |
132 | struct list_head buf_list; | |
133 | bool continuous; | |
134 | unsigned int sequence; | |
135 | enum rvin_dma_state state; | |
136 | ||
137 | struct rvin_source_fmt source; | |
138 | struct v4l2_pix_format format; | |
139 | ||
140 | struct v4l2_rect crop; | |
141 | struct v4l2_rect compose; | |
142 | }; | |
143 | ||
4869ce9d | 144 | #define vin_to_source(vin) vin->digital.subdev |
f00add96 NS |
145 | |
146 | /* Debug */ | |
147 | #define vin_dbg(d, fmt, arg...) dev_dbg(d->dev, fmt, ##arg) | |
148 | #define vin_info(d, fmt, arg...) dev_info(d->dev, fmt, ##arg) | |
149 | #define vin_warn(d, fmt, arg...) dev_warn(d->dev, fmt, ##arg) | |
150 | #define vin_err(d, fmt, arg...) dev_err(d->dev, fmt, ##arg) | |
151 | ||
152 | int rvin_dma_probe(struct rvin_dev *vin, int irq); | |
153 | void rvin_dma_remove(struct rvin_dev *vin); | |
154 | ||
155 | int rvin_v4l2_probe(struct rvin_dev *vin); | |
156 | void rvin_v4l2_remove(struct rvin_dev *vin); | |
157 | ||
158 | const struct rvin_video_format *rvin_format_from_pixel(u32 pixelformat); | |
159 | ||
160 | /* Cropping, composing and scaling */ | |
161 | void rvin_scale_try(struct rvin_dev *vin, struct v4l2_pix_format *pix, | |
162 | u32 width, u32 height); | |
163 | void rvin_crop_scale_comp(struct rvin_dev *vin); | |
164 | ||
165 | #endif |