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13#include <linux/init.h>
14#include <linux/module.h>
15#include <linux/slab.h>
16#include <linux/delay.h>
17#include <linux/platform_device.h>
18#include <linux/videodev2.h>
19#include <media/v4l2-subdev.h>
20#include <media/soc_camera.h>
21#include <media/soc_camera_platform.h>
22
23struct soc_camera_platform_priv {
24 struct v4l2_subdev subdev;
25};
26
27static struct soc_camera_platform_priv *get_priv(struct platform_device *pdev)
28{
29 struct v4l2_subdev *subdev = platform_get_drvdata(pdev);
30 return container_of(subdev, struct soc_camera_platform_priv, subdev);
31}
32
33static struct soc_camera_platform_info *get_info(struct soc_camera_device *icd)
34{
35 struct platform_device *pdev =
36 to_platform_device(to_soc_camera_control(icd));
37 return pdev->dev.platform_data;
38}
39
40static int soc_camera_platform_s_stream(struct v4l2_subdev *sd, int enable)
41{
42 struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd);
43 return p->set_capture(p, enable);
44}
45
46static int soc_camera_platform_set_bus_param(struct soc_camera_device *icd,
47 unsigned long flags)
48{
49 return 0;
50}
51
52static unsigned long
53soc_camera_platform_query_bus_param(struct soc_camera_device *icd)
54{
55 struct soc_camera_platform_info *p = get_info(icd);
56 return p->bus_param;
57}
58
59static int soc_camera_platform_fill_fmt(struct v4l2_subdev *sd,
60 struct v4l2_mbus_framefmt *mf)
61{
62 struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd);
63
64 mf->width = p->format.width;
65 mf->height = p->format.height;
66 mf->code = p->format.code;
67 mf->colorspace = p->format.colorspace;
68 mf->field = p->format.field;
69
70 return 0;
71}
72
73static struct v4l2_subdev_core_ops platform_subdev_core_ops;
74
75static int soc_camera_platform_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
76 enum v4l2_mbus_pixelcode *code)
77{
78 struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd);
79
80 if (index)
81 return -EINVAL;
82
83 *code = p->format.code;
84 return 0;
85}
86
87static int soc_camera_platform_g_crop(struct v4l2_subdev *sd,
88 struct v4l2_crop *a)
89{
90 struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd);
91
92 a->c.left = 0;
93 a->c.top = 0;
94 a->c.width = p->format.width;
95 a->c.height = p->format.height;
96 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
97
98 return 0;
99}
100
101static int soc_camera_platform_cropcap(struct v4l2_subdev *sd,
102 struct v4l2_cropcap *a)
103{
104 struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd);
105
106 a->bounds.left = 0;
107 a->bounds.top = 0;
108 a->bounds.width = p->format.width;
109 a->bounds.height = p->format.height;
110 a->defrect = a->bounds;
111 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
112 a->pixelaspect.numerator = 1;
113 a->pixelaspect.denominator = 1;
114
115 return 0;
116}
117
118static struct v4l2_subdev_video_ops platform_subdev_video_ops = {
119 .s_stream = soc_camera_platform_s_stream,
120 .enum_mbus_fmt = soc_camera_platform_enum_fmt,
121 .cropcap = soc_camera_platform_cropcap,
122 .g_crop = soc_camera_platform_g_crop,
123 .try_mbus_fmt = soc_camera_platform_fill_fmt,
124 .g_mbus_fmt = soc_camera_platform_fill_fmt,
125 .s_mbus_fmt = soc_camera_platform_fill_fmt,
126};
127
128static struct v4l2_subdev_ops platform_subdev_ops = {
129 .core = &platform_subdev_core_ops,
130 .video = &platform_subdev_video_ops,
131};
132
133static struct soc_camera_ops soc_camera_platform_ops = {
134 .set_bus_param = soc_camera_platform_set_bus_param,
135 .query_bus_param = soc_camera_platform_query_bus_param,
136};
137
138static int soc_camera_platform_probe(struct platform_device *pdev)
139{
140 struct soc_camera_host *ici;
141 struct soc_camera_platform_priv *priv;
142 struct soc_camera_platform_info *p = pdev->dev.platform_data;
143 struct soc_camera_device *icd;
144 int ret;
145
146 if (!p)
147 return -EINVAL;
148
149 if (!p->dev) {
150 dev_err(&pdev->dev,
151 "Platform has not set soc_camera_device pointer!\n");
152 return -EINVAL;
153 }
154
155 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
156 if (!priv)
157 return -ENOMEM;
158
159 icd = to_soc_camera_dev(p->dev);
160
161
162 platform_set_drvdata(pdev, &priv->subdev);
163
164 dev_set_drvdata(&icd->dev, &pdev->dev);
165
166 icd->ops = &soc_camera_platform_ops;
167
168 ici = to_soc_camera_host(icd->dev.parent);
169
170 v4l2_subdev_init(&priv->subdev, &platform_subdev_ops);
171 v4l2_set_subdevdata(&priv->subdev, p);
172 strncpy(priv->subdev.name, dev_name(&pdev->dev), V4L2_SUBDEV_NAME_SIZE);
173
174 ret = v4l2_device_register_subdev(&ici->v4l2_dev, &priv->subdev);
175 if (ret)
176 goto evdrs;
177
178 return ret;
179
180evdrs:
181 icd->ops = NULL;
182 platform_set_drvdata(pdev, NULL);
183 kfree(priv);
184 return ret;
185}
186
187static int soc_camera_platform_remove(struct platform_device *pdev)
188{
189 struct soc_camera_platform_priv *priv = get_priv(pdev);
190 struct soc_camera_platform_info *p = pdev->dev.platform_data;
191 struct soc_camera_device *icd = to_soc_camera_dev(p->dev);
192
193 v4l2_device_unregister_subdev(&priv->subdev);
194 icd->ops = NULL;
195 platform_set_drvdata(pdev, NULL);
196 kfree(priv);
197 return 0;
198}
199
200static struct platform_driver soc_camera_platform_driver = {
201 .driver = {
202 .name = "soc_camera_platform",
203 .owner = THIS_MODULE,
204 },
205 .probe = soc_camera_platform_probe,
206 .remove = soc_camera_platform_remove,
207};
208
209static int __init soc_camera_platform_module_init(void)
210{
211 return platform_driver_register(&soc_camera_platform_driver);
212}
213
214static void __exit soc_camera_platform_module_exit(void)
215{
216 platform_driver_unregister(&soc_camera_platform_driver);
217}
218
219module_init(soc_camera_platform_module_init);
220module_exit(soc_camera_platform_module_exit);
221
222MODULE_DESCRIPTION("SoC Camera Platform driver");
223MODULE_AUTHOR("Magnus Damm");
224MODULE_LICENSE("GPL v2");
225MODULE_ALIAS("platform:soc_camera_platform");
226
