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Commit | Line | Data |
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e55222ef GL |
1 | /* |
2 | * camera image capture (abstract) bus driver | |
3 | * | |
4 | * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de> | |
5 | * | |
6 | * This driver provides an interface between platform-specific camera | |
7 | * busses and camera devices. It should be used if the camera is | |
8 | * connected not over a "proper" bus like PCI or USB, but over a | |
9 | * special bus, like, for example, the Quick Capture interface on PXA270 | |
10 | * SoCs. Later it should also be used for i.MX31 SoCs from Freescale. | |
11 | * It can handle multiple cameras and / or multiple busses, which can | |
12 | * be used, e.g., in stereo-vision applications. | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License version 2 as | |
16 | * published by the Free Software Foundation. | |
17 | */ | |
18 | ||
e55222ef | 19 | #include <linux/device.h> |
e55222ef | 20 | #include <linux/err.h> |
0fd327bd GL |
21 | #include <linux/i2c.h> |
22 | #include <linux/init.h> | |
23 | #include <linux/list.h> | |
e55222ef | 24 | #include <linux/mutex.h> |
40e2e092 | 25 | #include <linux/module.h> |
0fd327bd | 26 | #include <linux/platform_device.h> |
96e442c1 | 27 | #include <linux/regulator/consumer.h> |
5a0e3ad6 | 28 | #include <linux/slab.h> |
4f9fb5ed | 29 | #include <linux/pm_runtime.h> |
e55222ef GL |
30 | #include <linux/vmalloc.h> |
31 | ||
0fd327bd | 32 | #include <media/soc_camera.h> |
e55222ef | 33 | #include <media/v4l2-common.h> |
0fd327bd | 34 | #include <media/v4l2-ioctl.h> |
40e2e092 | 35 | #include <media/v4l2-dev.h> |
092d3921 | 36 | #include <media/videobuf-core.h> |
760697be | 37 | #include <media/soc_mediabus.h> |
e55222ef | 38 | |
df2ed070 GL |
39 | /* Default to VGA resolution */ |
40 | #define DEFAULT_WIDTH 640 | |
41 | #define DEFAULT_HEIGHT 480 | |
42 | ||
e55222ef GL |
43 | static LIST_HEAD(hosts); |
44 | static LIST_HEAD(devices); | |
40e2e092 | 45 | static DEFINE_MUTEX(list_lock); /* Protects the list of hosts */ |
e55222ef | 46 | |
96e442c1 AP |
47 | static int soc_camera_power_set(struct soc_camera_device *icd, |
48 | struct soc_camera_link *icl, | |
49 | int power_on) | |
50 | { | |
51 | int ret; | |
52 | ||
53 | if (power_on) { | |
54 | ret = regulator_bulk_enable(icl->num_regulators, | |
55 | icl->regulators); | |
56 | if (ret < 0) { | |
57 | dev_err(&icd->dev, "Cannot enable regulators\n"); | |
58 | return ret; | |
59 | } | |
60 | ||
61 | if (icl->power) | |
62 | ret = icl->power(icd->pdev, power_on); | |
63 | if (ret < 0) { | |
64 | dev_err(&icd->dev, | |
65 | "Platform failed to power-on the camera.\n"); | |
66 | ||
67 | regulator_bulk_disable(icl->num_regulators, | |
68 | icl->regulators); | |
69 | return ret; | |
70 | } | |
71 | } else { | |
72 | ret = 0; | |
73 | if (icl->power) | |
74 | ret = icl->power(icd->pdev, 0); | |
75 | if (ret < 0) { | |
76 | dev_err(&icd->dev, | |
77 | "Platform failed to power-off the camera.\n"); | |
78 | return ret; | |
79 | } | |
80 | ||
81 | ret = regulator_bulk_disable(icl->num_regulators, | |
82 | icl->regulators); | |
83 | if (ret < 0) { | |
84 | dev_err(&icd->dev, "Cannot disable regulators\n"); | |
85 | return ret; | |
86 | } | |
87 | } | |
88 | ||
89 | return 0; | |
90 | } | |
91 | ||
c2786ad2 GL |
92 | const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc( |
93 | struct soc_camera_device *icd, unsigned int fourcc) | |
94 | { | |
95 | unsigned int i; | |
96 | ||
97 | for (i = 0; i < icd->num_user_formats; i++) | |
98 | if (icd->user_formats[i].host_fmt->fourcc == fourcc) | |
99 | return icd->user_formats + i; | |
100 | return NULL; | |
101 | } | |
102 | EXPORT_SYMBOL(soc_camera_xlate_by_fourcc); | |
103 | ||
bd73b36f GL |
104 | /** |
105 | * soc_camera_apply_sensor_flags() - apply platform SOCAM_SENSOR_INVERT_* flags | |
106 | * @icl: camera platform parameters | |
107 | * @flags: flags to be inverted according to platform configuration | |
108 | * @return: resulting flags | |
109 | */ | |
110 | unsigned long soc_camera_apply_sensor_flags(struct soc_camera_link *icl, | |
111 | unsigned long flags) | |
112 | { | |
113 | unsigned long f; | |
114 | ||
115 | /* If only one of the two polarities is supported, switch to the opposite */ | |
116 | if (icl->flags & SOCAM_SENSOR_INVERT_HSYNC) { | |
117 | f = flags & (SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW); | |
118 | if (f == SOCAM_HSYNC_ACTIVE_HIGH || f == SOCAM_HSYNC_ACTIVE_LOW) | |
119 | flags ^= SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW; | |
120 | } | |
121 | ||
122 | if (icl->flags & SOCAM_SENSOR_INVERT_VSYNC) { | |
123 | f = flags & (SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW); | |
124 | if (f == SOCAM_VSYNC_ACTIVE_HIGH || f == SOCAM_VSYNC_ACTIVE_LOW) | |
125 | flags ^= SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW; | |
126 | } | |
127 | ||
128 | if (icl->flags & SOCAM_SENSOR_INVERT_PCLK) { | |
129 | f = flags & (SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING); | |
130 | if (f == SOCAM_PCLK_SAMPLE_RISING || f == SOCAM_PCLK_SAMPLE_FALLING) | |
131 | flags ^= SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING; | |
132 | } | |
133 | ||
134 | return flags; | |
135 | } | |
136 | EXPORT_SYMBOL(soc_camera_apply_sensor_flags); | |
137 | ||
72937890 | 138 | static int soc_camera_try_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 139 | struct v4l2_format *f) |
e55222ef | 140 | { |
57bee29d | 141 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 142 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
143 | |
144 | WARN_ON(priv != file->private_data); | |
145 | ||
ad5f2e85 | 146 | /* limit format to hardware capabilities */ |
06daa1af | 147 | return ici->ops->try_fmt(icd, f); |
e55222ef GL |
148 | } |
149 | ||
150 | static int soc_camera_enum_input(struct file *file, void *priv, | |
151 | struct v4l2_input *inp) | |
152 | { | |
57bee29d | 153 | struct soc_camera_device *icd = file->private_data; |
34d359db KM |
154 | int ret = 0; |
155 | ||
e55222ef GL |
156 | if (inp->index != 0) |
157 | return -EINVAL; | |
158 | ||
34d359db KM |
159 | if (icd->ops->enum_input) |
160 | ret = icd->ops->enum_input(icd, inp); | |
161 | else { | |
162 | /* default is camera */ | |
163 | inp->type = V4L2_INPUT_TYPE_CAMERA; | |
164 | inp->std = V4L2_STD_UNKNOWN; | |
165 | strcpy(inp->name, "Camera"); | |
166 | } | |
e55222ef | 167 | |
34d359db | 168 | return ret; |
e55222ef GL |
169 | } |
170 | ||
171 | static int soc_camera_g_input(struct file *file, void *priv, unsigned int *i) | |
172 | { | |
173 | *i = 0; | |
174 | ||
175 | return 0; | |
176 | } | |
177 | ||
178 | static int soc_camera_s_input(struct file *file, void *priv, unsigned int i) | |
179 | { | |
180 | if (i > 0) | |
181 | return -EINVAL; | |
182 | ||
183 | return 0; | |
184 | } | |
185 | ||
186 | static int soc_camera_s_std(struct file *file, void *priv, v4l2_std_id *a) | |
187 | { | |
57bee29d | 188 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 189 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
513791ab | 190 | |
c9c1f1c0 | 191 | return v4l2_subdev_call(sd, core, s_std, *a); |
e55222ef GL |
192 | } |
193 | ||
ed5b65dc QX |
194 | static int soc_camera_enum_fsizes(struct file *file, void *fh, |
195 | struct v4l2_frmsizeenum *fsize) | |
196 | { | |
197 | struct soc_camera_device *icd = file->private_data; | |
198 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
199 | ||
200 | return ici->ops->enum_fsizes(icd, fsize); | |
201 | } | |
202 | ||
e55222ef GL |
203 | static int soc_camera_reqbufs(struct file *file, void *priv, |
204 | struct v4l2_requestbuffers *p) | |
205 | { | |
206 | int ret; | |
57bee29d | 207 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 208 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
209 | |
210 | WARN_ON(priv != file->private_data); | |
211 | ||
57bee29d GL |
212 | if (icd->streamer && icd->streamer != file) |
213 | return -EBUSY; | |
214 | ||
215 | ret = videobuf_reqbufs(&icd->vb_vidq, p); | |
e55222ef GL |
216 | if (ret < 0) |
217 | return ret; | |
218 | ||
57bee29d GL |
219 | ret = ici->ops->reqbufs(icd, p); |
220 | if (!ret && !icd->streamer) | |
221 | icd->streamer = file; | |
222 | ||
223 | return ret; | |
e55222ef GL |
224 | } |
225 | ||
226 | static int soc_camera_querybuf(struct file *file, void *priv, | |
227 | struct v4l2_buffer *p) | |
228 | { | |
57bee29d | 229 | struct soc_camera_device *icd = file->private_data; |
e55222ef GL |
230 | |
231 | WARN_ON(priv != file->private_data); | |
232 | ||
57bee29d | 233 | return videobuf_querybuf(&icd->vb_vidq, p); |
e55222ef GL |
234 | } |
235 | ||
236 | static int soc_camera_qbuf(struct file *file, void *priv, | |
237 | struct v4l2_buffer *p) | |
238 | { | |
57bee29d | 239 | struct soc_camera_device *icd = file->private_data; |
e55222ef GL |
240 | |
241 | WARN_ON(priv != file->private_data); | |
242 | ||
57bee29d GL |
243 | if (icd->streamer != file) |
244 | return -EBUSY; | |
245 | ||
246 | return videobuf_qbuf(&icd->vb_vidq, p); | |
e55222ef GL |
247 | } |
248 | ||
249 | static int soc_camera_dqbuf(struct file *file, void *priv, | |
250 | struct v4l2_buffer *p) | |
251 | { | |
57bee29d | 252 | struct soc_camera_device *icd = file->private_data; |
e55222ef GL |
253 | |
254 | WARN_ON(priv != file->private_data); | |
255 | ||
57bee29d GL |
256 | if (icd->streamer != file) |
257 | return -EBUSY; | |
258 | ||
259 | return videobuf_dqbuf(&icd->vb_vidq, p, file->f_flags & O_NONBLOCK); | |
e55222ef GL |
260 | } |
261 | ||
40e2e092 | 262 | /* Always entered with .video_lock held */ |
c2786ad2 GL |
263 | static int soc_camera_init_user_formats(struct soc_camera_device *icd) |
264 | { | |
760697be | 265 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
c2786ad2 | 266 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
3805f201 HV |
267 | unsigned int i, fmts = 0, raw_fmts = 0; |
268 | int ret; | |
760697be GL |
269 | enum v4l2_mbus_pixelcode code; |
270 | ||
271 | while (!v4l2_subdev_call(sd, video, enum_mbus_fmt, raw_fmts, &code)) | |
272 | raw_fmts++; | |
c2786ad2 GL |
273 | |
274 | if (!ici->ops->get_formats) | |
275 | /* | |
276 | * Fallback mode - the host will have to serve all | |
277 | * sensor-provided formats one-to-one to the user | |
278 | */ | |
760697be | 279 | fmts = raw_fmts; |
c2786ad2 GL |
280 | else |
281 | /* | |
282 | * First pass - only count formats this host-sensor | |
283 | * configuration can provide | |
284 | */ | |
760697be | 285 | for (i = 0; i < raw_fmts; i++) { |
fa48984e GL |
286 | ret = ici->ops->get_formats(icd, i, NULL); |
287 | if (ret < 0) | |
288 | return ret; | |
289 | fmts += ret; | |
290 | } | |
c2786ad2 GL |
291 | |
292 | if (!fmts) | |
293 | return -ENXIO; | |
294 | ||
295 | icd->user_formats = | |
296 | vmalloc(fmts * sizeof(struct soc_camera_format_xlate)); | |
297 | if (!icd->user_formats) | |
298 | return -ENOMEM; | |
299 | ||
300 | icd->num_user_formats = fmts; | |
c2786ad2 GL |
301 | |
302 | dev_dbg(&icd->dev, "Found %d supported formats.\n", fmts); | |
303 | ||
304 | /* Second pass - actually fill data formats */ | |
14df2cce | 305 | fmts = 0; |
760697be | 306 | for (i = 0; i < raw_fmts; i++) |
c2786ad2 | 307 | if (!ici->ops->get_formats) { |
760697be GL |
308 | v4l2_subdev_call(sd, video, enum_mbus_fmt, i, &code); |
309 | icd->user_formats[i].host_fmt = | |
310 | soc_mbus_get_fmtdesc(code); | |
311 | icd->user_formats[i].code = code; | |
c2786ad2 | 312 | } else { |
fa48984e GL |
313 | ret = ici->ops->get_formats(icd, i, |
314 | &icd->user_formats[fmts]); | |
315 | if (ret < 0) | |
316 | goto egfmt; | |
317 | fmts += ret; | |
c2786ad2 GL |
318 | } |
319 | ||
760697be | 320 | icd->current_fmt = &icd->user_formats[0]; |
c2786ad2 GL |
321 | |
322 | return 0; | |
fa48984e GL |
323 | |
324 | egfmt: | |
325 | icd->num_user_formats = 0; | |
326 | vfree(icd->user_formats); | |
327 | return ret; | |
c2786ad2 GL |
328 | } |
329 | ||
40e2e092 | 330 | /* Always entered with .video_lock held */ |
c2786ad2 GL |
331 | static void soc_camera_free_user_formats(struct soc_camera_device *icd) |
332 | { | |
fa48984e GL |
333 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
334 | ||
335 | if (ici->ops->put_formats) | |
336 | ici->ops->put_formats(icd); | |
40e2e092 | 337 | icd->current_fmt = NULL; |
fa48984e | 338 | icd->num_user_formats = 0; |
c2786ad2 | 339 | vfree(icd->user_formats); |
40e2e092 | 340 | icd->user_formats = NULL; |
c2786ad2 GL |
341 | } |
342 | ||
6a6c8786 GL |
343 | #define pixfmtstr(x) (x) & 0xff, ((x) >> 8) & 0xff, ((x) >> 16) & 0xff, \ |
344 | ((x) >> 24) & 0xff | |
345 | ||
760697be | 346 | /* Called with .vb_lock held, or from the first open(2), see comment there */ |
57bee29d | 347 | static int soc_camera_set_fmt(struct soc_camera_device *icd, |
df2ed070 GL |
348 | struct v4l2_format *f) |
349 | { | |
df2ed070 GL |
350 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
351 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
352 | int ret; | |
353 | ||
6a6c8786 GL |
354 | dev_dbg(&icd->dev, "S_FMT(%c%c%c%c, %ux%u)\n", |
355 | pixfmtstr(pix->pixelformat), pix->width, pix->height); | |
356 | ||
df2ed070 GL |
357 | /* We always call try_fmt() before set_fmt() or set_crop() */ |
358 | ret = ici->ops->try_fmt(icd, f); | |
359 | if (ret < 0) | |
360 | return ret; | |
361 | ||
362 | ret = ici->ops->set_fmt(icd, f); | |
363 | if (ret < 0) { | |
364 | return ret; | |
365 | } else if (!icd->current_fmt || | |
760697be | 366 | icd->current_fmt->host_fmt->fourcc != pix->pixelformat) { |
2aa58db4 | 367 | dev_err(&icd->dev, |
df2ed070 GL |
368 | "Host driver hasn't set up current format correctly!\n"); |
369 | return -EINVAL; | |
370 | } | |
371 | ||
6a6c8786 GL |
372 | icd->user_width = pix->width; |
373 | icd->user_height = pix->height; | |
760697be | 374 | icd->colorspace = pix->colorspace; |
57bee29d | 375 | icd->vb_vidq.field = |
6a6c8786 | 376 | icd->field = pix->field; |
025c18a1 | 377 | |
df2ed070 GL |
378 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
379 | dev_warn(&icd->dev, "Attention! Wrong buf-type %d\n", | |
380 | f->type); | |
381 | ||
382 | dev_dbg(&icd->dev, "set width: %d height: %d\n", | |
6a6c8786 | 383 | icd->user_width, icd->user_height); |
df2ed070 GL |
384 | |
385 | /* set physical bus parameters */ | |
386 | return ici->ops->set_bus_param(icd, pix->pixelformat); | |
387 | } | |
388 | ||
bec43661 | 389 | static int soc_camera_open(struct file *file) |
e55222ef | 390 | { |
979ea1dd | 391 | struct video_device *vdev = video_devdata(file); |
96c75399 GL |
392 | struct soc_camera_device *icd = container_of(vdev->parent, |
393 | struct soc_camera_device, | |
394 | dev); | |
979ea1dd | 395 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
9dc4e48f | 396 | struct soc_camera_host *ici; |
e55222ef GL |
397 | int ret; |
398 | ||
40e2e092 GL |
399 | if (!icd->ops) |
400 | /* No device driver attached */ | |
401 | return -ENODEV; | |
402 | ||
9dc4e48f | 403 | ici = to_soc_camera_host(icd->dev.parent); |
e55222ef | 404 | |
b8d9904c | 405 | if (!try_module_get(ici->ops->owner)) { |
e55222ef | 406 | dev_err(&icd->dev, "Couldn't lock capture bus driver.\n"); |
57bee29d | 407 | return -EINVAL; |
e55222ef GL |
408 | } |
409 | ||
1a0063a9 GL |
410 | icd->use_count++; |
411 | ||
9dc4e48f GL |
412 | /* Now we really have to activate the camera */ |
413 | if (icd->use_count == 1) { | |
025c18a1 | 414 | /* Restore parameters before the last close() per V4L2 API */ |
df2ed070 GL |
415 | struct v4l2_format f = { |
416 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
417 | .fmt.pix = { | |
6a6c8786 GL |
418 | .width = icd->user_width, |
419 | .height = icd->user_height, | |
025c18a1 | 420 | .field = icd->field, |
760697be GL |
421 | .colorspace = icd->colorspace, |
422 | .pixelformat = | |
423 | icd->current_fmt->host_fmt->fourcc, | |
df2ed070 GL |
424 | }, |
425 | }; | |
426 | ||
96e442c1 AP |
427 | ret = soc_camera_power_set(icd, icl, 1); |
428 | if (ret < 0) | |
429 | goto epower; | |
979ea1dd GL |
430 | |
431 | /* The camera could have been already on, try to reset */ | |
432 | if (icl->reset) | |
433 | icl->reset(icd->pdev); | |
434 | ||
b8d9904c | 435 | ret = ici->ops->add(icd); |
9dc4e48f GL |
436 | if (ret < 0) { |
437 | dev_err(&icd->dev, "Couldn't activate the camera: %d\n", ret); | |
9dc4e48f GL |
438 | goto eiciadd; |
439 | } | |
df2ed070 | 440 | |
4f9fb5ed MCC |
441 | pm_runtime_enable(&icd->vdev->dev); |
442 | ret = pm_runtime_resume(&icd->vdev->dev); | |
443 | if (ret < 0 && ret != -ENOSYS) | |
444 | goto eresume; | |
445 | ||
760697be GL |
446 | /* |
447 | * Try to configure with default parameters. Notice: this is the | |
448 | * very first open, so, we cannot race against other calls, | |
449 | * apart from someone else calling open() simultaneously, but | |
450 | * .video_lock is protecting us against it. | |
451 | */ | |
57bee29d | 452 | ret = soc_camera_set_fmt(icd, &f); |
df2ed070 GL |
453 | if (ret < 0) |
454 | goto esfmt; | |
24d8c029 GL |
455 | |
456 | ici->ops->init_videobuf(&icd->vb_vidq, icd); | |
9dc4e48f GL |
457 | } |
458 | ||
57bee29d | 459 | file->private_data = icd; |
e55222ef GL |
460 | dev_dbg(&icd->dev, "camera device open\n"); |
461 | ||
e55222ef GL |
462 | return 0; |
463 | ||
df2ed070 | 464 | /* |
4f9fb5ed | 465 | * First four errors are entered with the .video_lock held |
df2ed070 GL |
466 | * and use_count == 1 |
467 | */ | |
468 | esfmt: | |
4f9fb5ed MCC |
469 | pm_runtime_disable(&icd->vdev->dev); |
470 | eresume: | |
df2ed070 | 471 | ici->ops->remove(icd); |
9dc4e48f | 472 | eiciadd: |
96e442c1 | 473 | soc_camera_power_set(icd, icl, 0); |
979ea1dd | 474 | epower: |
c2786ad2 | 475 | icd->use_count--; |
b8d9904c | 476 | module_put(ici->ops->owner); |
57bee29d | 477 | |
e55222ef GL |
478 | return ret; |
479 | } | |
480 | ||
bec43661 | 481 | static int soc_camera_close(struct file *file) |
e55222ef | 482 | { |
57bee29d | 483 | struct soc_camera_device *icd = file->private_data; |
e55222ef | 484 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef | 485 | |
9dc4e48f | 486 | icd->use_count--; |
40e2e092 | 487 | if (!icd->use_count) { |
979ea1dd GL |
488 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
489 | ||
4f9fb5ed MCC |
490 | pm_runtime_suspend(&icd->vdev->dev); |
491 | pm_runtime_disable(&icd->vdev->dev); | |
492 | ||
b8d9904c | 493 | ici->ops->remove(icd); |
4f9fb5ed | 494 | |
96e442c1 | 495 | soc_camera_power_set(icd, icl, 0); |
40e2e092 | 496 | } |
025c18a1 | 497 | |
57bee29d GL |
498 | if (icd->streamer == file) |
499 | icd->streamer = NULL; | |
500 | ||
b8d9904c | 501 | module_put(ici->ops->owner); |
9dc4e48f | 502 | |
2aa58db4 | 503 | dev_dbg(&icd->dev, "camera device close\n"); |
e55222ef GL |
504 | |
505 | return 0; | |
506 | } | |
507 | ||
aba360d8 | 508 | static ssize_t soc_camera_read(struct file *file, char __user *buf, |
abe4c471 | 509 | size_t count, loff_t *ppos) |
e55222ef | 510 | { |
57bee29d | 511 | struct soc_camera_device *icd = file->private_data; |
e55222ef GL |
512 | int err = -EINVAL; |
513 | ||
2aa58db4 | 514 | dev_err(&icd->dev, "camera device read not implemented\n"); |
e55222ef GL |
515 | |
516 | return err; | |
517 | } | |
518 | ||
519 | static int soc_camera_mmap(struct file *file, struct vm_area_struct *vma) | |
520 | { | |
57bee29d | 521 | struct soc_camera_device *icd = file->private_data; |
e55222ef GL |
522 | int err; |
523 | ||
524 | dev_dbg(&icd->dev, "mmap called, vma=0x%08lx\n", (unsigned long)vma); | |
525 | ||
57bee29d GL |
526 | if (icd->streamer != file) |
527 | return -EBUSY; | |
528 | ||
529 | err = videobuf_mmap_mapper(&icd->vb_vidq, vma); | |
e55222ef GL |
530 | |
531 | dev_dbg(&icd->dev, "vma start=0x%08lx, size=%ld, ret=%d\n", | |
532 | (unsigned long)vma->vm_start, | |
533 | (unsigned long)vma->vm_end - (unsigned long)vma->vm_start, | |
534 | err); | |
535 | ||
536 | return err; | |
537 | } | |
538 | ||
539 | static unsigned int soc_camera_poll(struct file *file, poll_table *pt) | |
540 | { | |
57bee29d | 541 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 542 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef | 543 | |
57bee29d GL |
544 | if (icd->streamer != file) |
545 | return -EBUSY; | |
546 | ||
547 | if (list_empty(&icd->vb_vidq.stream)) { | |
e55222ef GL |
548 | dev_err(&icd->dev, "Trying to poll with no queued buffers!\n"); |
549 | return POLLERR; | |
550 | } | |
551 | ||
b8d9904c | 552 | return ici->ops->poll(file, pt); |
e55222ef GL |
553 | } |
554 | ||
bec43661 | 555 | static struct v4l2_file_operations soc_camera_fops = { |
e55222ef GL |
556 | .owner = THIS_MODULE, |
557 | .open = soc_camera_open, | |
558 | .release = soc_camera_close, | |
b6a633c1 | 559 | .unlocked_ioctl = video_ioctl2, |
e55222ef GL |
560 | .read = soc_camera_read, |
561 | .mmap = soc_camera_mmap, | |
562 | .poll = soc_camera_poll, | |
e55222ef GL |
563 | }; |
564 | ||
72937890 | 565 | static int soc_camera_s_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 566 | struct v4l2_format *f) |
e55222ef | 567 | { |
57bee29d | 568 | struct soc_camera_device *icd = file->private_data; |
e55222ef | 569 | int ret; |
e55222ef GL |
570 | |
571 | WARN_ON(priv != file->private_data); | |
572 | ||
57bee29d GL |
573 | if (icd->streamer && icd->streamer != file) |
574 | return -EBUSY; | |
1c3bb743 | 575 | |
57bee29d | 576 | if (icd->vb_vidq.bufs[0]) { |
b897a91a | 577 | dev_err(&icd->dev, "S_FMT denied: queue initialised\n"); |
b6a633c1 | 578 | return -EBUSY; |
1c3bb743 GL |
579 | } |
580 | ||
57bee29d GL |
581 | ret = soc_camera_set_fmt(icd, f); |
582 | ||
583 | if (!ret && !icd->streamer) | |
584 | icd->streamer = file; | |
1c3bb743 | 585 | |
1c3bb743 | 586 | return ret; |
e55222ef GL |
587 | } |
588 | ||
72937890 | 589 | static int soc_camera_enum_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 590 | struct v4l2_fmtdesc *f) |
e55222ef | 591 | { |
57bee29d | 592 | struct soc_camera_device *icd = file->private_data; |
760697be | 593 | const struct soc_mbus_pixelfmt *format; |
e55222ef GL |
594 | |
595 | WARN_ON(priv != file->private_data); | |
596 | ||
c2786ad2 | 597 | if (f->index >= icd->num_user_formats) |
e55222ef GL |
598 | return -EINVAL; |
599 | ||
c2786ad2 | 600 | format = icd->user_formats[f->index].host_fmt; |
e55222ef | 601 | |
760697be GL |
602 | if (format->name) |
603 | strlcpy(f->description, format->name, sizeof(f->description)); | |
e55222ef GL |
604 | f->pixelformat = format->fourcc; |
605 | return 0; | |
606 | } | |
607 | ||
72937890 | 608 | static int soc_camera_g_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 609 | struct v4l2_format *f) |
e55222ef | 610 | { |
57bee29d | 611 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 612 | struct v4l2_pix_format *pix = &f->fmt.pix; |
e55222ef GL |
613 | |
614 | WARN_ON(priv != file->private_data); | |
615 | ||
6a6c8786 GL |
616 | pix->width = icd->user_width; |
617 | pix->height = icd->user_height; | |
57bee29d | 618 | pix->field = icd->vb_vidq.field; |
760697be GL |
619 | pix->pixelformat = icd->current_fmt->host_fmt->fourcc; |
620 | pix->bytesperline = soc_mbus_bytes_per_line(pix->width, | |
621 | icd->current_fmt->host_fmt); | |
622 | pix->colorspace = icd->colorspace; | |
623 | if (pix->bytesperline < 0) | |
624 | return pix->bytesperline; | |
64f5905e | 625 | pix->sizeimage = pix->height * pix->bytesperline; |
e55222ef | 626 | dev_dbg(&icd->dev, "current_fmt->fourcc: 0x%08x\n", |
760697be | 627 | icd->current_fmt->host_fmt->fourcc); |
e55222ef GL |
628 | return 0; |
629 | } | |
630 | ||
631 | static int soc_camera_querycap(struct file *file, void *priv, | |
632 | struct v4l2_capability *cap) | |
633 | { | |
57bee29d | 634 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 635 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
636 | |
637 | WARN_ON(priv != file->private_data); | |
638 | ||
639 | strlcpy(cap->driver, ici->drv_name, sizeof(cap->driver)); | |
b8d9904c | 640 | return ici->ops->querycap(ici, cap); |
e55222ef GL |
641 | } |
642 | ||
643 | static int soc_camera_streamon(struct file *file, void *priv, | |
644 | enum v4l2_buf_type i) | |
645 | { | |
57bee29d | 646 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 647 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
1c3bb743 | 648 | int ret; |
e55222ef GL |
649 | |
650 | WARN_ON(priv != file->private_data); | |
651 | ||
e55222ef GL |
652 | if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
653 | return -EINVAL; | |
654 | ||
57bee29d GL |
655 | if (icd->streamer != file) |
656 | return -EBUSY; | |
657 | ||
e55222ef | 658 | /* This calls buf_queue from host driver's videobuf_queue_ops */ |
57bee29d | 659 | ret = videobuf_streamon(&icd->vb_vidq); |
7fdbd85b AG |
660 | if (!ret) |
661 | v4l2_subdev_call(sd, video, s_stream, 1); | |
1c3bb743 | 662 | |
1c3bb743 | 663 | return ret; |
e55222ef GL |
664 | } |
665 | ||
666 | static int soc_camera_streamoff(struct file *file, void *priv, | |
667 | enum v4l2_buf_type i) | |
668 | { | |
57bee29d | 669 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 670 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
e55222ef GL |
671 | |
672 | WARN_ON(priv != file->private_data); | |
673 | ||
e55222ef GL |
674 | if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
675 | return -EINVAL; | |
676 | ||
57bee29d GL |
677 | if (icd->streamer != file) |
678 | return -EBUSY; | |
679 | ||
5d28d525 GL |
680 | /* |
681 | * This calls buf_release from host driver's videobuf_queue_ops for all | |
682 | * remaining buffers. When the last buffer is freed, stop capture | |
683 | */ | |
57bee29d | 684 | videobuf_streamoff(&icd->vb_vidq); |
e55222ef | 685 | |
c9c1f1c0 | 686 | v4l2_subdev_call(sd, video, s_stream, 0); |
e55222ef GL |
687 | |
688 | return 0; | |
689 | } | |
690 | ||
691 | static int soc_camera_queryctrl(struct file *file, void *priv, | |
692 | struct v4l2_queryctrl *qc) | |
693 | { | |
57bee29d | 694 | struct soc_camera_device *icd = file->private_data; |
2840d249 | 695 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
696 | int i; |
697 | ||
698 | WARN_ON(priv != file->private_data); | |
699 | ||
700 | if (!qc->id) | |
701 | return -EINVAL; | |
702 | ||
2840d249 GL |
703 | /* First check host controls */ |
704 | for (i = 0; i < ici->ops->num_controls; i++) | |
705 | if (qc->id == ici->ops->controls[i].id) { | |
706 | memcpy(qc, &(ici->ops->controls[i]), | |
707 | sizeof(*qc)); | |
708 | return 0; | |
709 | } | |
710 | ||
711 | /* Then device controls */ | |
e55222ef GL |
712 | for (i = 0; i < icd->ops->num_controls; i++) |
713 | if (qc->id == icd->ops->controls[i].id) { | |
714 | memcpy(qc, &(icd->ops->controls[i]), | |
715 | sizeof(*qc)); | |
716 | return 0; | |
717 | } | |
718 | ||
719 | return -EINVAL; | |
720 | } | |
721 | ||
722 | static int soc_camera_g_ctrl(struct file *file, void *priv, | |
723 | struct v4l2_control *ctrl) | |
724 | { | |
57bee29d | 725 | struct soc_camera_device *icd = file->private_data; |
979ea1dd | 726 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
c9c1f1c0 | 727 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
2840d249 | 728 | int ret; |
e55222ef GL |
729 | |
730 | WARN_ON(priv != file->private_data); | |
731 | ||
2840d249 GL |
732 | if (ici->ops->get_ctrl) { |
733 | ret = ici->ops->get_ctrl(icd, ctrl); | |
734 | if (ret != -ENOIOCTLCMD) | |
735 | return ret; | |
736 | } | |
737 | ||
c9c1f1c0 | 738 | return v4l2_subdev_call(sd, core, g_ctrl, ctrl); |
e55222ef GL |
739 | } |
740 | ||
741 | static int soc_camera_s_ctrl(struct file *file, void *priv, | |
742 | struct v4l2_control *ctrl) | |
743 | { | |
57bee29d | 744 | struct soc_camera_device *icd = file->private_data; |
979ea1dd | 745 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
c9c1f1c0 | 746 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
2840d249 | 747 | int ret; |
e55222ef GL |
748 | |
749 | WARN_ON(priv != file->private_data); | |
750 | ||
2840d249 GL |
751 | if (ici->ops->set_ctrl) { |
752 | ret = ici->ops->set_ctrl(icd, ctrl); | |
753 | if (ret != -ENOIOCTLCMD) | |
754 | return ret; | |
755 | } | |
756 | ||
c9c1f1c0 | 757 | return v4l2_subdev_call(sd, core, s_ctrl, ctrl); |
e55222ef GL |
758 | } |
759 | ||
760 | static int soc_camera_cropcap(struct file *file, void *fh, | |
761 | struct v4l2_cropcap *a) | |
762 | { | |
57bee29d | 763 | struct soc_camera_device *icd = file->private_data; |
6a6c8786 | 764 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef | 765 | |
6a6c8786 | 766 | return ici->ops->cropcap(icd, a); |
e55222ef GL |
767 | } |
768 | ||
769 | static int soc_camera_g_crop(struct file *file, void *fh, | |
770 | struct v4l2_crop *a) | |
771 | { | |
57bee29d | 772 | struct soc_camera_device *icd = file->private_data; |
6a6c8786 GL |
773 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
774 | int ret; | |
e55222ef | 775 | |
6a6c8786 | 776 | ret = ici->ops->get_crop(icd, a); |
e55222ef | 777 | |
6a6c8786 | 778 | return ret; |
e55222ef GL |
779 | } |
780 | ||
68a54f0e GL |
781 | /* |
782 | * According to the V4L2 API, drivers shall not update the struct v4l2_crop | |
783 | * argument with the actual geometry, instead, the user shall use G_CROP to | |
ab56d5eb | 784 | * retrieve it. |
68a54f0e | 785 | */ |
e55222ef GL |
786 | static int soc_camera_s_crop(struct file *file, void *fh, |
787 | struct v4l2_crop *a) | |
788 | { | |
57bee29d | 789 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 790 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
6a6c8786 GL |
791 | struct v4l2_rect *rect = &a->c; |
792 | struct v4l2_crop current_crop; | |
e55222ef GL |
793 | int ret; |
794 | ||
795 | if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
796 | return -EINVAL; | |
797 | ||
6a6c8786 GL |
798 | dev_dbg(&icd->dev, "S_CROP(%ux%u@%u:%u)\n", |
799 | rect->width, rect->height, rect->left, rect->top); | |
800 | ||
6a6c8786 GL |
801 | /* If get_crop fails, we'll let host and / or client drivers decide */ |
802 | ret = ici->ops->get_crop(icd, ¤t_crop); | |
803 | ||
b897a91a | 804 | /* Prohibit window size change with initialised buffers */ |
103754a0 GL |
805 | if (ret < 0) { |
806 | dev_err(&icd->dev, | |
807 | "S_CROP denied: getting current crop failed\n"); | |
57bee29d | 808 | } else if (icd->vb_vidq.bufs[0] && |
103754a0 GL |
809 | (a->c.width != current_crop.c.width || |
810 | a->c.height != current_crop.c.height)) { | |
b897a91a GL |
811 | dev_err(&icd->dev, |
812 | "S_CROP denied: queue initialised and sizes differ\n"); | |
813 | ret = -EBUSY; | |
6a6c8786 GL |
814 | } else { |
815 | ret = ici->ops->set_crop(icd, a); | |
b897a91a GL |
816 | } |
817 | ||
e55222ef GL |
818 | return ret; |
819 | } | |
820 | ||
c9f6ef69 GL |
821 | static int soc_camera_g_parm(struct file *file, void *fh, |
822 | struct v4l2_streamparm *a) | |
823 | { | |
57bee29d | 824 | struct soc_camera_device *icd = file->private_data; |
c9f6ef69 GL |
825 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
826 | ||
827 | if (ici->ops->get_parm) | |
828 | return ici->ops->get_parm(icd, a); | |
829 | ||
830 | return -ENOIOCTLCMD; | |
831 | } | |
832 | ||
833 | static int soc_camera_s_parm(struct file *file, void *fh, | |
834 | struct v4l2_streamparm *a) | |
835 | { | |
57bee29d | 836 | struct soc_camera_device *icd = file->private_data; |
c9f6ef69 GL |
837 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
838 | ||
839 | if (ici->ops->set_parm) | |
840 | return ici->ops->set_parm(icd, a); | |
841 | ||
842 | return -ENOIOCTLCMD; | |
843 | } | |
844 | ||
e55222ef | 845 | static int soc_camera_g_chip_ident(struct file *file, void *fh, |
aecde8b5 | 846 | struct v4l2_dbg_chip_ident *id) |
e55222ef | 847 | { |
57bee29d | 848 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 849 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
e55222ef | 850 | |
c9c1f1c0 | 851 | return v4l2_subdev_call(sd, core, g_chip_ident, id); |
e55222ef GL |
852 | } |
853 | ||
854 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
855 | static int soc_camera_g_register(struct file *file, void *fh, | |
aecde8b5 | 856 | struct v4l2_dbg_register *reg) |
e55222ef | 857 | { |
57bee29d | 858 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 859 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
e55222ef | 860 | |
c9c1f1c0 | 861 | return v4l2_subdev_call(sd, core, g_register, reg); |
e55222ef GL |
862 | } |
863 | ||
864 | static int soc_camera_s_register(struct file *file, void *fh, | |
aecde8b5 | 865 | struct v4l2_dbg_register *reg) |
e55222ef | 866 | { |
57bee29d | 867 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 868 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
e55222ef | 869 | |
c9c1f1c0 | 870 | return v4l2_subdev_call(sd, core, s_register, reg); |
e55222ef GL |
871 | } |
872 | #endif | |
873 | ||
e55222ef GL |
874 | /* So far this function cannot fail */ |
875 | static void scan_add_host(struct soc_camera_host *ici) | |
876 | { | |
877 | struct soc_camera_device *icd; | |
878 | ||
879 | mutex_lock(&list_lock); | |
880 | ||
881 | list_for_each_entry(icd, &devices, list) { | |
882 | if (icd->iface == ici->nr) { | |
40e2e092 | 883 | int ret; |
979ea1dd | 884 | icd->dev.parent = ici->v4l2_dev.dev; |
40e2e092 GL |
885 | dev_set_name(&icd->dev, "%u-%u", icd->iface, |
886 | icd->devnum); | |
887 | ret = device_register(&icd->dev); | |
888 | if (ret < 0) { | |
889 | icd->dev.parent = NULL; | |
890 | dev_err(&icd->dev, | |
891 | "Cannot register device: %d\n", ret); | |
892 | } | |
e55222ef GL |
893 | } |
894 | } | |
895 | ||
896 | mutex_unlock(&list_lock); | |
897 | } | |
898 | ||
40e2e092 GL |
899 | #ifdef CONFIG_I2C_BOARDINFO |
900 | static int soc_camera_init_i2c(struct soc_camera_device *icd, | |
901 | struct soc_camera_link *icl) | |
e55222ef | 902 | { |
40e2e092 | 903 | struct i2c_client *client; |
979ea1dd | 904 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
40e2e092 | 905 | struct i2c_adapter *adap = i2c_get_adapter(icl->i2c_adapter_id); |
979ea1dd | 906 | struct v4l2_subdev *subdev; |
e55222ef | 907 | |
40e2e092 | 908 | if (!adap) { |
40e2e092 GL |
909 | dev_err(&icd->dev, "Cannot get I2C adapter #%d. No driver?\n", |
910 | icl->i2c_adapter_id); | |
911 | goto ei2cga; | |
912 | } | |
e55222ef | 913 | |
40e2e092 | 914 | icl->board_info->platform_data = icd; |
e55222ef | 915 | |
979ea1dd | 916 | subdev = v4l2_i2c_new_subdev_board(&ici->v4l2_dev, adap, |
9a1f8b34 | 917 | icl->board_info, NULL); |
d74f841c | 918 | if (!subdev) |
40e2e092 | 919 | goto ei2cnd; |
e55222ef | 920 | |
c4ce6d14 | 921 | client = v4l2_get_subdevdata(subdev); |
979ea1dd | 922 | |
40e2e092 GL |
923 | /* Use to_i2c_client(dev) to recover the i2c client */ |
924 | dev_set_drvdata(&icd->dev, &client->dev); | |
e55222ef | 925 | |
40e2e092 GL |
926 | return 0; |
927 | ei2cnd: | |
928 | i2c_put_adapter(adap); | |
929 | ei2cga: | |
d74f841c | 930 | return -ENODEV; |
e55222ef GL |
931 | } |
932 | ||
40e2e092 GL |
933 | static void soc_camera_free_i2c(struct soc_camera_device *icd) |
934 | { | |
935 | struct i2c_client *client = | |
936 | to_i2c_client(to_soc_camera_control(icd)); | |
937 | dev_set_drvdata(&icd->dev, NULL); | |
979ea1dd | 938 | v4l2_device_unregister_subdev(i2c_get_clientdata(client)); |
40e2e092 GL |
939 | i2c_unregister_device(client); |
940 | i2c_put_adapter(client->adapter); | |
941 | } | |
942 | #else | |
943 | #define soc_camera_init_i2c(icd, icl) (-ENODEV) | |
944 | #define soc_camera_free_i2c(icd) do {} while (0) | |
945 | #endif | |
946 | ||
979ea1dd | 947 | static int soc_camera_video_start(struct soc_camera_device *icd); |
40e2e092 GL |
948 | static int video_dev_create(struct soc_camera_device *icd); |
949 | /* Called during host-driver probe */ | |
e55222ef GL |
950 | static int soc_camera_probe(struct device *dev) |
951 | { | |
952 | struct soc_camera_device *icd = to_soc_camera_dev(dev); | |
979ea1dd | 953 | struct soc_camera_host *ici = to_soc_camera_host(dev->parent); |
40e2e092 | 954 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
979ea1dd | 955 | struct device *control = NULL; |
6a6c8786 | 956 | struct v4l2_subdev *sd; |
760697be | 957 | struct v4l2_mbus_framefmt mf; |
e55222ef GL |
958 | int ret; |
959 | ||
40e2e092 | 960 | dev_info(dev, "Probing %s\n", dev_name(dev)); |
1c3bb743 | 961 | |
96e442c1 AP |
962 | ret = regulator_bulk_get(icd->pdev, icl->num_regulators, |
963 | icl->regulators); | |
964 | if (ret < 0) | |
965 | goto ereg; | |
966 | ||
967 | ret = soc_camera_power_set(icd, icl, 1); | |
968 | if (ret < 0) | |
969 | goto epower; | |
979ea1dd GL |
970 | |
971 | /* The camera could have been already on, try to reset */ | |
972 | if (icl->reset) | |
973 | icl->reset(icd->pdev); | |
974 | ||
975 | ret = ici->ops->add(icd); | |
976 | if (ret < 0) | |
977 | goto eadd; | |
978 | ||
979 | /* Must have icd->vdev before registering the device */ | |
40e2e092 GL |
980 | ret = video_dev_create(icd); |
981 | if (ret < 0) | |
982 | goto evdc; | |
1c3bb743 | 983 | |
40e2e092 GL |
984 | /* Non-i2c cameras, e.g., soc_camera_platform, have no board_info */ |
985 | if (icl->board_info) { | |
986 | ret = soc_camera_init_i2c(icd, icl); | |
987 | if (ret < 0) | |
988 | goto eadddev; | |
989 | } else if (!icl->add_device || !icl->del_device) { | |
1c3bb743 | 990 | ret = -EINVAL; |
40e2e092 GL |
991 | goto eadddev; |
992 | } else { | |
979ea1dd GL |
993 | if (icl->module_name) |
994 | ret = request_module(icl->module_name); | |
995 | ||
40e2e092 GL |
996 | ret = icl->add_device(icl, &icd->dev); |
997 | if (ret < 0) | |
998 | goto eadddev; | |
1c3bb743 | 999 | |
96c75399 GL |
1000 | /* |
1001 | * FIXME: this is racy, have to use driver-binding notification, | |
1002 | * when it is available | |
1003 | */ | |
979ea1dd | 1004 | control = to_soc_camera_control(icd); |
08590b96 | 1005 | if (!control || !control->driver || !dev_get_drvdata(control) || |
979ea1dd GL |
1006 | !try_module_get(control->driver->owner)) { |
1007 | icl->del_device(icl); | |
1008 | goto enodrv; | |
1009 | } | |
40e2e092 | 1010 | } |
e55222ef | 1011 | |
fa48984e GL |
1012 | /* At this point client .probe() should have run already */ |
1013 | ret = soc_camera_init_user_formats(icd); | |
1014 | if (ret < 0) | |
1015 | goto eiufmt; | |
1016 | ||
fa48984e GL |
1017 | icd->field = V4L2_FIELD_ANY; |
1018 | ||
b6a633c1 GL |
1019 | icd->vdev->lock = &icd->video_lock; |
1020 | ||
1021 | /* | |
1022 | * ..._video_start() will create a device node, video_register_device() | |
1023 | * itself is protected against concurrent open() calls, but we also have | |
1024 | * to protect our data. | |
1025 | */ | |
979ea1dd GL |
1026 | mutex_lock(&icd->video_lock); |
1027 | ||
1028 | ret = soc_camera_video_start(icd); | |
1029 | if (ret < 0) | |
1030 | goto evidstart; | |
1031 | ||
6a6c8786 GL |
1032 | /* Try to improve our guess of a reasonable window format */ |
1033 | sd = soc_camera_to_subdev(icd); | |
760697be GL |
1034 | if (!v4l2_subdev_call(sd, video, g_mbus_fmt, &mf)) { |
1035 | icd->user_width = mf.width; | |
1036 | icd->user_height = mf.height; | |
1037 | icd->colorspace = mf.colorspace; | |
1038 | icd->field = mf.field; | |
6a6c8786 GL |
1039 | } |
1040 | ||
40e2e092 | 1041 | /* Do we have to sysfs_remove_link() before device_unregister()? */ |
6a6c8786 | 1042 | if (sysfs_create_link(&icd->dev.kobj, &to_soc_camera_control(icd)->kobj, |
40e2e092 GL |
1043 | "control")) |
1044 | dev_warn(&icd->dev, "Failed creating the control symlink\n"); | |
025c18a1 | 1045 | |
979ea1dd GL |
1046 | ici->ops->remove(icd); |
1047 | ||
96e442c1 | 1048 | soc_camera_power_set(icd, icl, 0); |
979ea1dd GL |
1049 | |
1050 | mutex_unlock(&icd->video_lock); | |
025c18a1 | 1051 | |
40e2e092 | 1052 | return 0; |
e55222ef | 1053 | |
979ea1dd GL |
1054 | evidstart: |
1055 | mutex_unlock(&icd->video_lock); | |
fa48984e GL |
1056 | soc_camera_free_user_formats(icd); |
1057 | eiufmt: | |
979ea1dd | 1058 | if (icl->board_info) { |
40e2e092 | 1059 | soc_camera_free_i2c(icd); |
979ea1dd | 1060 | } else { |
40e2e092 | 1061 | icl->del_device(icl); |
979ea1dd GL |
1062 | module_put(control->driver->owner); |
1063 | } | |
1064 | enodrv: | |
40e2e092 GL |
1065 | eadddev: |
1066 | video_device_release(icd->vdev); | |
1067 | evdc: | |
979ea1dd GL |
1068 | ici->ops->remove(icd); |
1069 | eadd: | |
96e442c1 | 1070 | soc_camera_power_set(icd, icl, 0); |
979ea1dd | 1071 | epower: |
96e442c1 AP |
1072 | regulator_bulk_free(icl->num_regulators, icl->regulators); |
1073 | ereg: | |
e55222ef GL |
1074 | return ret; |
1075 | } | |
1076 | ||
5d28d525 GL |
1077 | /* |
1078 | * This is called on device_unregister, which only means we have to disconnect | |
1079 | * from the host, but not remove ourselves from the device list | |
1080 | */ | |
e55222ef GL |
1081 | static int soc_camera_remove(struct device *dev) |
1082 | { | |
1083 | struct soc_camera_device *icd = to_soc_camera_dev(dev); | |
40e2e092 GL |
1084 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
1085 | struct video_device *vdev = icd->vdev; | |
e55222ef | 1086 | |
40e2e092 | 1087 | BUG_ON(!dev->parent); |
e55222ef | 1088 | |
40e2e092 | 1089 | if (vdev) { |
40e2e092 GL |
1090 | video_unregister_device(vdev); |
1091 | icd->vdev = NULL; | |
40e2e092 GL |
1092 | } |
1093 | ||
979ea1dd | 1094 | if (icl->board_info) { |
40e2e092 | 1095 | soc_camera_free_i2c(icd); |
979ea1dd GL |
1096 | } else { |
1097 | struct device_driver *drv = to_soc_camera_control(icd) ? | |
1098 | to_soc_camera_control(icd)->driver : NULL; | |
1099 | if (drv) { | |
1100 | icl->del_device(icl); | |
1101 | module_put(drv->owner); | |
1102 | } | |
1103 | } | |
fa48984e | 1104 | soc_camera_free_user_formats(icd); |
025c18a1 | 1105 | |
96e442c1 AP |
1106 | regulator_bulk_free(icl->num_regulators, icl->regulators); |
1107 | ||
e55222ef GL |
1108 | return 0; |
1109 | } | |
1110 | ||
2e521061 RJ |
1111 | static int soc_camera_suspend(struct device *dev, pm_message_t state) |
1112 | { | |
1113 | struct soc_camera_device *icd = to_soc_camera_dev(dev); | |
1114 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1115 | int ret = 0; | |
1116 | ||
1117 | if (ici->ops->suspend) | |
1118 | ret = ici->ops->suspend(icd, state); | |
1119 | ||
1120 | return ret; | |
1121 | } | |
1122 | ||
1123 | static int soc_camera_resume(struct device *dev) | |
1124 | { | |
1125 | struct soc_camera_device *icd = to_soc_camera_dev(dev); | |
1126 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1127 | int ret = 0; | |
1128 | ||
1129 | if (ici->ops->resume) | |
1130 | ret = ici->ops->resume(icd); | |
1131 | ||
1132 | return ret; | |
1133 | } | |
1134 | ||
52d268a3 | 1135 | struct bus_type soc_camera_bus_type = { |
e55222ef GL |
1136 | .name = "soc-camera", |
1137 | .probe = soc_camera_probe, | |
1138 | .remove = soc_camera_remove, | |
2e521061 RJ |
1139 | .suspend = soc_camera_suspend, |
1140 | .resume = soc_camera_resume, | |
e55222ef | 1141 | }; |
52d268a3 | 1142 | EXPORT_SYMBOL_GPL(soc_camera_bus_type); |
e55222ef GL |
1143 | |
1144 | static struct device_driver ic_drv = { | |
1145 | .name = "camera", | |
1146 | .bus = &soc_camera_bus_type, | |
1147 | .owner = THIS_MODULE, | |
1148 | }; | |
1149 | ||
e55222ef GL |
1150 | static void dummy_release(struct device *dev) |
1151 | { | |
1152 | } | |
1153 | ||
6a6c8786 GL |
1154 | static int default_cropcap(struct soc_camera_device *icd, |
1155 | struct v4l2_cropcap *a) | |
1156 | { | |
1157 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1158 | return v4l2_subdev_call(sd, video, cropcap, a); | |
1159 | } | |
1160 | ||
1161 | static int default_g_crop(struct soc_camera_device *icd, struct v4l2_crop *a) | |
1162 | { | |
1163 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1164 | return v4l2_subdev_call(sd, video, g_crop, a); | |
1165 | } | |
1166 | ||
1167 | static int default_s_crop(struct soc_camera_device *icd, struct v4l2_crop *a) | |
1168 | { | |
1169 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1170 | return v4l2_subdev_call(sd, video, s_crop, a); | |
1171 | } | |
1172 | ||
06e17821 JK |
1173 | static int default_g_parm(struct soc_camera_device *icd, |
1174 | struct v4l2_streamparm *parm) | |
1175 | { | |
1176 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1177 | return v4l2_subdev_call(sd, video, g_parm, parm); | |
1178 | } | |
1179 | ||
1180 | static int default_s_parm(struct soc_camera_device *icd, | |
1181 | struct v4l2_streamparm *parm) | |
1182 | { | |
1183 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1184 | return v4l2_subdev_call(sd, video, s_parm, parm); | |
1185 | } | |
1186 | ||
ed5b65dc QX |
1187 | static int default_enum_fsizes(struct soc_camera_device *icd, |
1188 | struct v4l2_frmsizeenum *fsize) | |
1189 | { | |
1190 | int ret; | |
1191 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1192 | const struct soc_camera_format_xlate *xlate; | |
1193 | __u32 pixfmt = fsize->pixel_format; | |
1194 | struct v4l2_frmsizeenum fsize_mbus = *fsize; | |
1195 | ||
1196 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); | |
1197 | if (!xlate) | |
1198 | return -EINVAL; | |
1199 | /* map xlate-code to pixel_format, sensor only handle xlate-code*/ | |
1200 | fsize_mbus.pixel_format = xlate->code; | |
1201 | ||
1202 | ret = v4l2_subdev_call(sd, video, enum_mbus_fsizes, &fsize_mbus); | |
1203 | if (ret < 0) | |
1204 | return ret; | |
1205 | ||
1206 | *fsize = fsize_mbus; | |
1207 | fsize->pixel_format = pixfmt; | |
1208 | ||
1209 | return 0; | |
1210 | } | |
1211 | ||
64ff9ba5 GL |
1212 | static void soc_camera_device_init(struct device *dev, void *pdata) |
1213 | { | |
1214 | dev->platform_data = pdata; | |
1215 | dev->bus = &soc_camera_bus_type; | |
1216 | dev->release = dummy_release; | |
1217 | } | |
1218 | ||
b8d9904c | 1219 | int soc_camera_host_register(struct soc_camera_host *ici) |
e55222ef | 1220 | { |
e55222ef | 1221 | struct soc_camera_host *ix; |
979ea1dd | 1222 | int ret; |
e55222ef | 1223 | |
64f5905e GL |
1224 | if (!ici || !ici->ops || |
1225 | !ici->ops->try_fmt || | |
1226 | !ici->ops->set_fmt || | |
1227 | !ici->ops->set_bus_param || | |
1228 | !ici->ops->querycap || | |
1229 | !ici->ops->init_videobuf || | |
1230 | !ici->ops->reqbufs || | |
1231 | !ici->ops->add || | |
1232 | !ici->ops->remove || | |
eff505fa | 1233 | !ici->ops->poll || |
979ea1dd | 1234 | !ici->v4l2_dev.dev) |
e55222ef GL |
1235 | return -EINVAL; |
1236 | ||
6a6c8786 GL |
1237 | if (!ici->ops->set_crop) |
1238 | ici->ops->set_crop = default_s_crop; | |
1239 | if (!ici->ops->get_crop) | |
1240 | ici->ops->get_crop = default_g_crop; | |
1241 | if (!ici->ops->cropcap) | |
1242 | ici->ops->cropcap = default_cropcap; | |
06e17821 JK |
1243 | if (!ici->ops->set_parm) |
1244 | ici->ops->set_parm = default_s_parm; | |
1245 | if (!ici->ops->get_parm) | |
1246 | ici->ops->get_parm = default_g_parm; | |
ed5b65dc QX |
1247 | if (!ici->ops->enum_fsizes) |
1248 | ici->ops->enum_fsizes = default_enum_fsizes; | |
6a6c8786 | 1249 | |
e55222ef GL |
1250 | mutex_lock(&list_lock); |
1251 | list_for_each_entry(ix, &hosts, list) { | |
1252 | if (ix->nr == ici->nr) { | |
979ea1dd GL |
1253 | ret = -EBUSY; |
1254 | goto edevreg; | |
e55222ef GL |
1255 | } |
1256 | } | |
1257 | ||
979ea1dd GL |
1258 | ret = v4l2_device_register(ici->v4l2_dev.dev, &ici->v4l2_dev); |
1259 | if (ret < 0) | |
1260 | goto edevreg; | |
eff505fa | 1261 | |
e55222ef GL |
1262 | list_add_tail(&ici->list, &hosts); |
1263 | mutex_unlock(&list_lock); | |
1264 | ||
e55222ef GL |
1265 | scan_add_host(ici); |
1266 | ||
1267 | return 0; | |
979ea1dd GL |
1268 | |
1269 | edevreg: | |
1270 | mutex_unlock(&list_lock); | |
1271 | return ret; | |
e55222ef GL |
1272 | } |
1273 | EXPORT_SYMBOL(soc_camera_host_register); | |
1274 | ||
1275 | /* Unregister all clients! */ | |
1276 | void soc_camera_host_unregister(struct soc_camera_host *ici) | |
1277 | { | |
1278 | struct soc_camera_device *icd; | |
1279 | ||
1280 | mutex_lock(&list_lock); | |
1281 | ||
1282 | list_del(&ici->list); | |
1283 | ||
1284 | list_for_each_entry(icd, &devices, list) { | |
979ea1dd | 1285 | if (icd->iface == ici->nr) { |
64ff9ba5 | 1286 | void *pdata = icd->dev.platform_data; |
40e2e092 | 1287 | /* The bus->remove will be called */ |
e55222ef | 1288 | device_unregister(&icd->dev); |
76823b79 GL |
1289 | /* |
1290 | * Not before device_unregister(), .remove | |
1291 | * needs parent to call ici->ops->remove(). | |
1292 | * If the host module is loaded again, device_register() | |
1293 | * would complain "already initialised," since 2.6.32 | |
1294 | * this is also needed to prevent use-after-free of the | |
1295 | * device private data. | |
1296 | */ | |
1297 | memset(&icd->dev, 0, sizeof(icd->dev)); | |
64ff9ba5 | 1298 | soc_camera_device_init(&icd->dev, pdata); |
e55222ef GL |
1299 | } |
1300 | } | |
1301 | ||
1302 | mutex_unlock(&list_lock); | |
1303 | ||
979ea1dd | 1304 | v4l2_device_unregister(&ici->v4l2_dev); |
e55222ef GL |
1305 | } |
1306 | EXPORT_SYMBOL(soc_camera_host_unregister); | |
1307 | ||
1308 | /* Image capture device */ | |
40e2e092 | 1309 | static int soc_camera_device_register(struct soc_camera_device *icd) |
e55222ef GL |
1310 | { |
1311 | struct soc_camera_device *ix; | |
1312 | int num = -1, i; | |
1313 | ||
e55222ef GL |
1314 | for (i = 0; i < 256 && num < 0; i++) { |
1315 | num = i; | |
40e2e092 | 1316 | /* Check if this index is available on this interface */ |
e55222ef GL |
1317 | list_for_each_entry(ix, &devices, list) { |
1318 | if (ix->iface == icd->iface && ix->devnum == i) { | |
1319 | num = -1; | |
1320 | break; | |
1321 | } | |
1322 | } | |
1323 | } | |
1324 | ||
1325 | if (num < 0) | |
5d28d525 GL |
1326 | /* |
1327 | * ok, we have 256 cameras on this host... | |
1328 | * man, stay reasonable... | |
1329 | */ | |
e55222ef GL |
1330 | return -ENOMEM; |
1331 | ||
64ff9ba5 | 1332 | icd->devnum = num; |
64f5905e GL |
1333 | icd->use_count = 0; |
1334 | icd->host_priv = NULL; | |
1c3bb743 | 1335 | mutex_init(&icd->video_lock); |
e55222ef | 1336 | |
40e2e092 GL |
1337 | list_add_tail(&icd->list, &devices); |
1338 | ||
1339 | return 0; | |
e55222ef | 1340 | } |
e55222ef | 1341 | |
40e2e092 | 1342 | static void soc_camera_device_unregister(struct soc_camera_device *icd) |
e55222ef | 1343 | { |
e55222ef | 1344 | list_del(&icd->list); |
e55222ef | 1345 | } |
e55222ef | 1346 | |
a399810c HV |
1347 | static const struct v4l2_ioctl_ops soc_camera_ioctl_ops = { |
1348 | .vidioc_querycap = soc_camera_querycap, | |
1349 | .vidioc_g_fmt_vid_cap = soc_camera_g_fmt_vid_cap, | |
1350 | .vidioc_enum_fmt_vid_cap = soc_camera_enum_fmt_vid_cap, | |
1351 | .vidioc_s_fmt_vid_cap = soc_camera_s_fmt_vid_cap, | |
1352 | .vidioc_enum_input = soc_camera_enum_input, | |
1353 | .vidioc_g_input = soc_camera_g_input, | |
1354 | .vidioc_s_input = soc_camera_s_input, | |
1355 | .vidioc_s_std = soc_camera_s_std, | |
ed5b65dc | 1356 | .vidioc_enum_framesizes = soc_camera_enum_fsizes, |
a399810c HV |
1357 | .vidioc_reqbufs = soc_camera_reqbufs, |
1358 | .vidioc_try_fmt_vid_cap = soc_camera_try_fmt_vid_cap, | |
1359 | .vidioc_querybuf = soc_camera_querybuf, | |
1360 | .vidioc_qbuf = soc_camera_qbuf, | |
1361 | .vidioc_dqbuf = soc_camera_dqbuf, | |
1362 | .vidioc_streamon = soc_camera_streamon, | |
1363 | .vidioc_streamoff = soc_camera_streamoff, | |
1364 | .vidioc_queryctrl = soc_camera_queryctrl, | |
1365 | .vidioc_g_ctrl = soc_camera_g_ctrl, | |
1366 | .vidioc_s_ctrl = soc_camera_s_ctrl, | |
1367 | .vidioc_cropcap = soc_camera_cropcap, | |
1368 | .vidioc_g_crop = soc_camera_g_crop, | |
1369 | .vidioc_s_crop = soc_camera_s_crop, | |
c9f6ef69 GL |
1370 | .vidioc_g_parm = soc_camera_g_parm, |
1371 | .vidioc_s_parm = soc_camera_s_parm, | |
a399810c HV |
1372 | .vidioc_g_chip_ident = soc_camera_g_chip_ident, |
1373 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
1374 | .vidioc_g_register = soc_camera_g_register, | |
1375 | .vidioc_s_register = soc_camera_s_register, | |
1376 | #endif | |
1377 | }; | |
1378 | ||
40e2e092 | 1379 | static int video_dev_create(struct soc_camera_device *icd) |
e55222ef GL |
1380 | { |
1381 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
40e2e092 | 1382 | struct video_device *vdev = video_device_alloc(); |
e55222ef | 1383 | |
e55222ef | 1384 | if (!vdev) |
40e2e092 | 1385 | return -ENOMEM; |
e55222ef GL |
1386 | |
1387 | strlcpy(vdev->name, ici->drv_name, sizeof(vdev->name)); | |
1c3bb743 | 1388 | |
5e85e732 | 1389 | vdev->parent = &icd->dev; |
e55222ef GL |
1390 | vdev->current_norm = V4L2_STD_UNKNOWN; |
1391 | vdev->fops = &soc_camera_fops; | |
a399810c | 1392 | vdev->ioctl_ops = &soc_camera_ioctl_ops; |
e55222ef | 1393 | vdev->release = video_device_release; |
40e2e092 | 1394 | vdev->tvnorms = V4L2_STD_UNKNOWN; |
e55222ef | 1395 | |
e55222ef GL |
1396 | icd->vdev = vdev; |
1397 | ||
1398 | return 0; | |
40e2e092 | 1399 | } |
e55222ef | 1400 | |
40e2e092 | 1401 | /* |
979ea1dd | 1402 | * Called from soc_camera_probe() above (with .video_lock held???) |
40e2e092 | 1403 | */ |
979ea1dd | 1404 | static int soc_camera_video_start(struct soc_camera_device *icd) |
40e2e092 | 1405 | { |
4f9fb5ed | 1406 | struct device_type *type = icd->vdev->dev.type; |
979ea1dd | 1407 | int ret; |
40e2e092 GL |
1408 | |
1409 | if (!icd->dev.parent) | |
1410 | return -ENODEV; | |
1411 | ||
1412 | if (!icd->ops || | |
40e2e092 GL |
1413 | !icd->ops->query_bus_param || |
1414 | !icd->ops->set_bus_param) | |
1415 | return -EINVAL; | |
1416 | ||
46b21094 | 1417 | ret = video_register_device(icd->vdev, VFL_TYPE_GRABBER, -1); |
979ea1dd GL |
1418 | if (ret < 0) { |
1419 | dev_err(&icd->dev, "video_register_device failed: %d\n", ret); | |
1420 | return ret; | |
1421 | } | |
40e2e092 | 1422 | |
4f9fb5ed MCC |
1423 | /* Restore device type, possibly set by the subdevice driver */ |
1424 | icd->vdev->dev.type = type; | |
1425 | ||
979ea1dd | 1426 | return 0; |
e55222ef | 1427 | } |
e55222ef | 1428 | |
40e2e092 | 1429 | static int __devinit soc_camera_pdrv_probe(struct platform_device *pdev) |
0fd327bd | 1430 | { |
40e2e092 GL |
1431 | struct soc_camera_link *icl = pdev->dev.platform_data; |
1432 | struct soc_camera_device *icd; | |
c41debaf | 1433 | int ret; |
0fd327bd | 1434 | |
40e2e092 GL |
1435 | if (!icl) |
1436 | return -EINVAL; | |
0fd327bd | 1437 | |
40e2e092 GL |
1438 | icd = kzalloc(sizeof(*icd), GFP_KERNEL); |
1439 | if (!icd) | |
1440 | return -ENOMEM; | |
0fd327bd | 1441 | |
40e2e092 | 1442 | icd->iface = icl->bus_id; |
979ea1dd | 1443 | icd->pdev = &pdev->dev; |
40e2e092 | 1444 | platform_set_drvdata(pdev, icd); |
0fd327bd | 1445 | |
40e2e092 GL |
1446 | ret = soc_camera_device_register(icd); |
1447 | if (ret < 0) | |
1448 | goto escdevreg; | |
0fd327bd | 1449 | |
64ff9ba5 GL |
1450 | soc_camera_device_init(&icd->dev, icl); |
1451 | ||
6a6c8786 GL |
1452 | icd->user_width = DEFAULT_WIDTH; |
1453 | icd->user_height = DEFAULT_HEIGHT; | |
1454 | ||
40e2e092 | 1455 | return 0; |
0fd327bd | 1456 | |
40e2e092 GL |
1457 | escdevreg: |
1458 | kfree(icd); | |
0fd327bd | 1459 | |
40e2e092 | 1460 | return ret; |
c41debaf | 1461 | } |
0fd327bd | 1462 | |
5d28d525 GL |
1463 | /* |
1464 | * Only called on rmmod for each platform device, since they are not | |
40e2e092 | 1465 | * hot-pluggable. Now we know, that all our users - hosts and devices have |
5d28d525 GL |
1466 | * been unloaded already |
1467 | */ | |
40e2e092 | 1468 | static int __devexit soc_camera_pdrv_remove(struct platform_device *pdev) |
c41debaf | 1469 | { |
40e2e092 | 1470 | struct soc_camera_device *icd = platform_get_drvdata(pdev); |
c41debaf | 1471 | |
40e2e092 | 1472 | if (!icd) |
c41debaf GL |
1473 | return -EINVAL; |
1474 | ||
40e2e092 | 1475 | soc_camera_device_unregister(icd); |
c41debaf | 1476 | |
40e2e092 | 1477 | kfree(icd); |
c41debaf | 1478 | |
0fd327bd GL |
1479 | return 0; |
1480 | } | |
1481 | ||
1482 | static struct platform_driver __refdata soc_camera_pdrv = { | |
40e2e092 GL |
1483 | .remove = __devexit_p(soc_camera_pdrv_remove), |
1484 | .driver = { | |
1485 | .name = "soc-camera-pdrv", | |
1486 | .owner = THIS_MODULE, | |
0fd327bd GL |
1487 | }, |
1488 | }; | |
1489 | ||
e55222ef GL |
1490 | static int __init soc_camera_init(void) |
1491 | { | |
1492 | int ret = bus_register(&soc_camera_bus_type); | |
1493 | if (ret) | |
1494 | return ret; | |
1495 | ret = driver_register(&ic_drv); | |
1496 | if (ret) | |
1497 | goto edrvr; | |
e55222ef | 1498 | |
40e2e092 | 1499 | ret = platform_driver_probe(&soc_camera_pdrv, soc_camera_pdrv_probe); |
0fd327bd GL |
1500 | if (ret) |
1501 | goto epdr; | |
1502 | ||
e55222ef GL |
1503 | return 0; |
1504 | ||
0fd327bd GL |
1505 | epdr: |
1506 | driver_unregister(&ic_drv); | |
e55222ef GL |
1507 | edrvr: |
1508 | bus_unregister(&soc_camera_bus_type); | |
1509 | return ret; | |
1510 | } | |
1511 | ||
1512 | static void __exit soc_camera_exit(void) | |
1513 | { | |
0fd327bd | 1514 | platform_driver_unregister(&soc_camera_pdrv); |
e55222ef GL |
1515 | driver_unregister(&ic_drv); |
1516 | bus_unregister(&soc_camera_bus_type); | |
1517 | } | |
1518 | ||
1519 | module_init(soc_camera_init); | |
1520 | module_exit(soc_camera_exit); | |
1521 | ||
1522 | MODULE_DESCRIPTION("Image capture bus driver"); | |
1523 | MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>"); | |
1524 | MODULE_LICENSE("GPL"); | |
0fd327bd | 1525 | MODULE_ALIAS("platform:soc-camera-pdrv"); |