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
|
/*
* Generic Platform Camera Driver
*
* Copyright (C) 2008 Magnus Damm
* Based on mt9m001 driver,
* Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
*
* 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.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/soc_camera.h>
struct soc_camera_platform_info {
int iface;
char *format_name;
unsigned long format_depth;
struct v4l2_pix_format format;
unsigned long bus_param;
int (*set_capture)(struct soc_camera_platform_info *info, int enable);
};
struct soc_camera_platform_priv {
struct soc_camera_platform_info *info;
struct soc_camera_device icd;
struct soc_camera_data_format format;
};
static struct soc_camera_platform_info *
soc_camera_platform_get_info(struct soc_camera_device *icd)
{
struct soc_camera_platform_priv *priv;
priv = container_of(icd, struct soc_camera_platform_priv, icd);
return priv->info;
}
static int soc_camera_platform_init(struct soc_camera_device *icd)
{
return 0;
}
static int soc_camera_platform_release(struct soc_camera_device *icd)
{
return 0;
}
static int soc_camera_platform_start_capture(struct soc_camera_device *icd)
{
struct soc_camera_platform_info *p = soc_camera_platform_get_info(icd);
return p->set_capture(p, 1);
}
static int soc_camera_platform_stop_capture(struct soc_camera_device *icd)
{
struct soc_camera_platform_info *p = soc_camera_platform_get_info(icd);
return p->set_capture(p, 0);
}
static int soc_camera_platform_set_bus_param(struct soc_camera_device *icd,
unsigned long flags)
{
return 0;
}
static unsigned long
soc_camera_platform_query_bus_param(struct soc_camera_device *icd)
{
struct soc_camera_platform_info *p = soc_camera_platform_get_info(icd);
return p->bus_param;
}
static int soc_camera_platform_set_fmt_cap(struct soc_camera_device *icd,
__u32 pixfmt, struct v4l2_rect *rect)
{
return 0;
}
static int soc_camera_platform_try_fmt_cap(struct soc_camera_device *icd,
struct v4l2_format *f)
{
struct soc_camera_platform_info *p = soc_camera_platform_get_info(icd);
f->fmt.pix.width = p->format.width;
f->fmt.pix.height = p->format.height;
return 0;
}
static int soc_camera_platform_video_probe(struct soc_camera_device *icd)
{
struct soc_camera_platform_priv *priv;
priv = container_of(icd, struct soc_camera_platform_priv, icd);
priv->format.name = priv->info->format_name;
priv->format.depth = priv->info->format_depth;
priv->format.fourcc = priv->info->format.pixelformat;
priv->format.colorspace = priv->info->format.colorspace;
icd->formats = &priv->format;
icd->num_formats = 1;
return soc_camera_video_start(icd);
}
static void soc_camera_platform_video_remove(struct soc_camera_device *icd)
{
soc_camera_video_stop(icd);
}
static struct soc_camera_ops soc_camera_platform_ops = {
.owner = THIS_MODULE,
.probe = soc_camera_platform_video_probe,
.remove = soc_camera_platform_video_remove,
.init = soc_camera_platform_init,
.release = soc_camera_platform_release,
.start_capture = soc_camera_platform_start_capture,
.stop_capture = soc_camera_platform_stop_capture,
.set_fmt_cap = soc_camera_platform_set_fmt_cap,
.try_fmt_cap = soc_camera_platform_try_fmt_cap,
.set_bus_param = soc_camera_platform_set_bus_param,
.query_bus_param = soc_camera_platform_query_bus_param,
};
static int soc_camera_platform_probe(struct platform_device *pdev)
{
struct soc_camera_platform_priv *priv;
struct soc_camera_platform_info *p;
struct soc_camera_device *icd;
int ret;
p = pdev->dev.platform_data;
if (!p)
return -EINVAL;
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->info = p;
platform_set_drvdata(pdev, priv);
icd = &priv->icd;
icd->ops = &soc_camera_platform_ops;
icd->control = &pdev->dev;
icd->width_min = 0;
icd->width_max = priv->info->format.width;
icd->height_min = 0;
icd->height_max = priv->info->format.height;
icd->y_skip_top = 0;
icd->iface = priv->info->iface;
ret = soc_camera_device_register(icd);
if (ret)
kfree(priv);
return ret;
}
static int soc_camera_platform_remove(struct platform_device *pdev)
{
struct soc_camera_platform_priv *priv = platform_get_drvdata(pdev);
soc_camera_device_unregister(&priv->icd);
kfree(priv);
return 0;
}
static struct platform_driver soc_camera_platform_driver = {
.driver = {
.name = "soc_camera_platform",
},
.probe = soc_camera_platform_probe,
.remove = soc_camera_platform_remove,
};
static int __init soc_camera_platform_module_init(void)
{
return platform_driver_register(&soc_camera_platform_driver);
}
static void __exit soc_camera_platform_module_exit(void)
{
platform_driver_unregister(&soc_camera_platform_driver);
}
module_init(soc_camera_platform_module_init);
module_exit(soc_camera_platform_module_exit);
MODULE_DESCRIPTION("SoC Camera Platform driver");
MODULE_AUTHOR("Magnus Damm");
MODULE_LICENSE("GPL v2");
|
