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
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
/*
* ispvideo.h
*
* TI OMAP3 ISP - Generic video node
*
* Copyright (C) 2009-2010 Nokia Corporation
*
* Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
* Sakari Ailus <sakari.ailus@iki.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#ifndef OMAP3_ISP_VIDEO_H
#define OMAP3_ISP_VIDEO_H
#include <linux/v4l2-mediabus.h>
#include <media/media-entity.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-fh.h>
#include "ispqueue.h"
#define ISP_VIDEO_DRIVER_NAME "ispvideo"
#define ISP_VIDEO_DRIVER_VERSION "0.0.2"
struct isp_device;
struct isp_video;
struct v4l2_mbus_framefmt;
struct v4l2_pix_format;
/*
* struct isp_format_info - ISP media bus format information
* @code: V4L2 media bus format code
* @truncated: V4L2 media bus format code for the same format truncated to 10
* bits. Identical to @code if the format is 10 bits wide or less.
* @uncompressed: V4L2 media bus format code for the corresponding uncompressed
* format. Identical to @code if the format is not DPCM compressed.
* @flavor: V4L2 media bus format code for the same pixel layout but
* shifted to be 8 bits per pixel. =0 if format is not shiftable.
* @pixelformat: V4L2 pixel format FCC identifier
* @width: Bits per pixel (when transferred over a bus)
* @bpp: Bytes per pixel (when stored in memory)
*/
struct isp_format_info {
enum v4l2_mbus_pixelcode code;
enum v4l2_mbus_pixelcode truncated;
enum v4l2_mbus_pixelcode uncompressed;
enum v4l2_mbus_pixelcode flavor;
u32 pixelformat;
unsigned int width;
unsigned int bpp;
};
enum isp_pipeline_stream_state {
ISP_PIPELINE_STREAM_STOPPED = 0,
ISP_PIPELINE_STREAM_CONTINUOUS = 1,
ISP_PIPELINE_STREAM_SINGLESHOT = 2,
};
enum isp_pipeline_state {
/* The stream has been started on the input video node. */
ISP_PIPELINE_STREAM_INPUT = 1,
/* The stream has been started on the output video node. */
ISP_PIPELINE_STREAM_OUTPUT = 2,
/* At least one buffer is queued on the input video node. */
ISP_PIPELINE_QUEUE_INPUT = 4,
/* At least one buffer is queued on the output video node. */
ISP_PIPELINE_QUEUE_OUTPUT = 8,
/* The input entity is idle, ready to be started. */
ISP_PIPELINE_IDLE_INPUT = 16,
/* The output entity is idle, ready to be started. */
ISP_PIPELINE_IDLE_OUTPUT = 32,
/* The pipeline is currently streaming. */
ISP_PIPELINE_STREAM = 64,
};
/*
* struct isp_pipeline - An ISP hardware pipeline
* @error: A hardware error occurred during capture
* @entities: Bitmask of entities in the pipeline (indexed by entity ID)
*/
struct isp_pipeline {
struct media_pipeline pipe;
spinlock_t lock; /* Pipeline state and queue flags */
unsigned int state;
enum isp_pipeline_stream_state stream_state;
struct isp_video *input;
struct isp_video *output;
u32 entities;
unsigned long l3_ick;
unsigned int max_rate;
atomic_t frame_number;
bool do_propagation; /* of frame number */
bool error;
struct v4l2_fract max_timeperframe;
struct v4l2_subdev *external;
unsigned int external_rate;
unsigned int external_width;
};
#define to_isp_pipeline(__e) \
container_of((__e)->pipe, struct isp_pipeline, pipe)
static inline int isp_pipeline_ready(struct isp_pipeline *pipe)
{
return pipe->state == (ISP_PIPELINE_STREAM_INPUT |
ISP_PIPELINE_STREAM_OUTPUT |
ISP_PIPELINE_QUEUE_INPUT |
ISP_PIPELINE_QUEUE_OUTPUT |
ISP_PIPELINE_IDLE_INPUT |
ISP_PIPELINE_IDLE_OUTPUT);
}
/*
* struct isp_buffer - ISP buffer
* @buffer: ISP video buffer
* @isp_addr: MMU mapped address (a.k.a. device address) of the buffer.
*/
struct isp_buffer {
struct isp_video_buffer buffer;
dma_addr_t isp_addr;
};
#define to_isp_buffer(buf) container_of(buf, struct isp_buffer, buffer)
enum isp_video_dmaqueue_flags {
/* Set if DMA queue becomes empty when ISP_PIPELINE_STREAM_CONTINUOUS */
ISP_VIDEO_DMAQUEUE_UNDERRUN = (1 << 0),
/* Set when queuing buffer to an empty DMA queue */
ISP_VIDEO_DMAQUEUE_QUEUED = (1 << 1),
};
#define isp_video_dmaqueue_flags_clr(video) \
({ (video)->dmaqueue_flags = 0; })
/*
* struct isp_video_operations - ISP video operations
* @queue: Resume streaming when a buffer is queued. Called on VIDIOC_QBUF
* if there was no buffer previously queued.
*/
struct isp_video_operations {
int(*queue)(struct isp_video *video, struct isp_buffer *buffer);
};
struct isp_video {
struct video_device video;
enum v4l2_buf_type type;
struct media_pad pad;
struct mutex mutex; /* format and crop settings */
atomic_t active;
struct isp_device *isp;
unsigned int capture_mem;
unsigned int bpl_alignment; /* alignment value */
unsigned int bpl_zero_padding; /* whether the alignment is optional */
unsigned int bpl_max; /* maximum bytes per line value */
unsigned int bpl_value; /* bytes per line value */
unsigned int bpl_padding; /* padding at end of line */
/* Entity video node streaming */
unsigned int streaming:1;
/* Pipeline state */
struct isp_pipeline pipe;
struct mutex stream_lock; /* pipeline and stream states */
bool error;
/* Video buffers queue */
struct isp_video_queue *queue;
struct list_head dmaqueue;
enum isp_video_dmaqueue_flags dmaqueue_flags;
const struct isp_video_operations *ops;
};
#define to_isp_video(vdev) container_of(vdev, struct isp_video, video)
struct isp_video_fh {
struct v4l2_fh vfh;
struct isp_video *video;
struct isp_video_queue queue;
struct v4l2_format format;
struct v4l2_fract timeperframe;
};
#define to_isp_video_fh(fh) container_of(fh, struct isp_video_fh, vfh)
#define isp_video_queue_to_isp_video_fh(q) \
container_of(q, struct isp_video_fh, queue)
int omap3isp_video_init(struct isp_video *video, const char *name);
void omap3isp_video_cleanup(struct isp_video *video);
int omap3isp_video_register(struct isp_video *video,
struct v4l2_device *vdev);
void omap3isp_video_unregister(struct isp_video *video);
struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video);
void omap3isp_video_cancel_stream(struct isp_video *video);
void omap3isp_video_resume(struct isp_video *video, int continuous);
struct media_pad *omap3isp_video_remote_pad(struct isp_video *video);
const struct isp_format_info *
omap3isp_video_format_info(enum v4l2_mbus_pixelcode code);
#endif /* OMAP3_ISP_VIDEO_H */
|
