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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> |
592c2aba | 37 | #include <media/videobuf2-core.h> |
760697be | 38 | #include <media/soc_mediabus.h> |
e55222ef | 39 | |
df2ed070 GL |
40 | /* Default to VGA resolution */ |
41 | #define DEFAULT_WIDTH 640 | |
42 | #define DEFAULT_HEIGHT 480 | |
43 | ||
e55222ef GL |
44 | static LIST_HEAD(hosts); |
45 | static LIST_HEAD(devices); | |
40e2e092 | 46 | static DEFINE_MUTEX(list_lock); /* Protects the list of hosts */ |
e55222ef | 47 | |
96e442c1 AP |
48 | static int soc_camera_power_set(struct soc_camera_device *icd, |
49 | struct soc_camera_link *icl, | |
50 | int power_on) | |
51 | { | |
52 | int ret; | |
53 | ||
54 | if (power_on) { | |
55 | ret = regulator_bulk_enable(icl->num_regulators, | |
56 | icl->regulators); | |
57 | if (ret < 0) { | |
58 | dev_err(&icd->dev, "Cannot enable regulators\n"); | |
59 | return ret; | |
60 | } | |
61 | ||
62 | if (icl->power) | |
63 | ret = icl->power(icd->pdev, power_on); | |
64 | if (ret < 0) { | |
65 | dev_err(&icd->dev, | |
66 | "Platform failed to power-on the camera.\n"); | |
67 | ||
68 | regulator_bulk_disable(icl->num_regulators, | |
69 | icl->regulators); | |
70 | return ret; | |
71 | } | |
72 | } else { | |
73 | ret = 0; | |
74 | if (icl->power) | |
75 | ret = icl->power(icd->pdev, 0); | |
76 | if (ret < 0) { | |
77 | dev_err(&icd->dev, | |
78 | "Platform failed to power-off the camera.\n"); | |
79 | return ret; | |
80 | } | |
81 | ||
82 | ret = regulator_bulk_disable(icl->num_regulators, | |
83 | icl->regulators); | |
84 | if (ret < 0) { | |
85 | dev_err(&icd->dev, "Cannot disable regulators\n"); | |
86 | return ret; | |
87 | } | |
88 | } | |
89 | ||
90 | return 0; | |
91 | } | |
92 | ||
c2786ad2 GL |
93 | const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc( |
94 | struct soc_camera_device *icd, unsigned int fourcc) | |
95 | { | |
96 | unsigned int i; | |
97 | ||
98 | for (i = 0; i < icd->num_user_formats; i++) | |
99 | if (icd->user_formats[i].host_fmt->fourcc == fourcc) | |
100 | return icd->user_formats + i; | |
101 | return NULL; | |
102 | } | |
103 | EXPORT_SYMBOL(soc_camera_xlate_by_fourcc); | |
104 | ||
bd73b36f GL |
105 | /** |
106 | * soc_camera_apply_sensor_flags() - apply platform SOCAM_SENSOR_INVERT_* flags | |
107 | * @icl: camera platform parameters | |
108 | * @flags: flags to be inverted according to platform configuration | |
109 | * @return: resulting flags | |
110 | */ | |
111 | unsigned long soc_camera_apply_sensor_flags(struct soc_camera_link *icl, | |
112 | unsigned long flags) | |
113 | { | |
114 | unsigned long f; | |
115 | ||
116 | /* If only one of the two polarities is supported, switch to the opposite */ | |
117 | if (icl->flags & SOCAM_SENSOR_INVERT_HSYNC) { | |
118 | f = flags & (SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW); | |
119 | if (f == SOCAM_HSYNC_ACTIVE_HIGH || f == SOCAM_HSYNC_ACTIVE_LOW) | |
120 | flags ^= SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW; | |
121 | } | |
122 | ||
123 | if (icl->flags & SOCAM_SENSOR_INVERT_VSYNC) { | |
124 | f = flags & (SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW); | |
125 | if (f == SOCAM_VSYNC_ACTIVE_HIGH || f == SOCAM_VSYNC_ACTIVE_LOW) | |
126 | flags ^= SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW; | |
127 | } | |
128 | ||
129 | if (icl->flags & SOCAM_SENSOR_INVERT_PCLK) { | |
130 | f = flags & (SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING); | |
131 | if (f == SOCAM_PCLK_SAMPLE_RISING || f == SOCAM_PCLK_SAMPLE_FALLING) | |
132 | flags ^= SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING; | |
133 | } | |
134 | ||
135 | return flags; | |
136 | } | |
137 | EXPORT_SYMBOL(soc_camera_apply_sensor_flags); | |
138 | ||
72937890 | 139 | static int soc_camera_try_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 140 | struct v4l2_format *f) |
e55222ef | 141 | { |
57bee29d | 142 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 143 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
144 | |
145 | WARN_ON(priv != file->private_data); | |
146 | ||
ad5f2e85 | 147 | /* limit format to hardware capabilities */ |
06daa1af | 148 | return ici->ops->try_fmt(icd, f); |
e55222ef GL |
149 | } |
150 | ||
151 | static int soc_camera_enum_input(struct file *file, void *priv, | |
152 | struct v4l2_input *inp) | |
153 | { | |
57bee29d | 154 | struct soc_camera_device *icd = file->private_data; |
34d359db KM |
155 | int ret = 0; |
156 | ||
e55222ef GL |
157 | if (inp->index != 0) |
158 | return -EINVAL; | |
159 | ||
34d359db KM |
160 | if (icd->ops->enum_input) |
161 | ret = icd->ops->enum_input(icd, inp); | |
162 | else { | |
163 | /* default is camera */ | |
164 | inp->type = V4L2_INPUT_TYPE_CAMERA; | |
165 | inp->std = V4L2_STD_UNKNOWN; | |
166 | strcpy(inp->name, "Camera"); | |
167 | } | |
e55222ef | 168 | |
34d359db | 169 | return ret; |
e55222ef GL |
170 | } |
171 | ||
172 | static int soc_camera_g_input(struct file *file, void *priv, unsigned int *i) | |
173 | { | |
174 | *i = 0; | |
175 | ||
176 | return 0; | |
177 | } | |
178 | ||
179 | static int soc_camera_s_input(struct file *file, void *priv, unsigned int i) | |
180 | { | |
181 | if (i > 0) | |
182 | return -EINVAL; | |
183 | ||
184 | return 0; | |
185 | } | |
186 | ||
187 | static int soc_camera_s_std(struct file *file, void *priv, v4l2_std_id *a) | |
188 | { | |
57bee29d | 189 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 190 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
513791ab | 191 | |
c9c1f1c0 | 192 | return v4l2_subdev_call(sd, core, s_std, *a); |
e55222ef GL |
193 | } |
194 | ||
ed5b65dc QX |
195 | static int soc_camera_enum_fsizes(struct file *file, void *fh, |
196 | struct v4l2_frmsizeenum *fsize) | |
197 | { | |
198 | struct soc_camera_device *icd = file->private_data; | |
199 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
200 | ||
201 | return ici->ops->enum_fsizes(icd, fsize); | |
202 | } | |
203 | ||
e55222ef GL |
204 | static int soc_camera_reqbufs(struct file *file, void *priv, |
205 | struct v4l2_requestbuffers *p) | |
206 | { | |
207 | int ret; | |
57bee29d | 208 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 209 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
210 | |
211 | WARN_ON(priv != file->private_data); | |
212 | ||
57bee29d GL |
213 | if (icd->streamer && icd->streamer != file) |
214 | return -EBUSY; | |
215 | ||
592c2aba GL |
216 | if (ici->ops->init_videobuf) { |
217 | ret = videobuf_reqbufs(&icd->vb_vidq, p); | |
218 | if (ret < 0) | |
219 | return ret; | |
220 | ||
221 | ret = ici->ops->reqbufs(icd, p); | |
222 | } else { | |
223 | ret = vb2_reqbufs(&icd->vb2_vidq, p); | |
224 | } | |
e55222ef | 225 | |
57bee29d GL |
226 | if (!ret && !icd->streamer) |
227 | icd->streamer = file; | |
228 | ||
229 | return ret; | |
e55222ef GL |
230 | } |
231 | ||
232 | static int soc_camera_querybuf(struct file *file, void *priv, | |
233 | struct v4l2_buffer *p) | |
234 | { | |
57bee29d | 235 | struct soc_camera_device *icd = file->private_data; |
592c2aba | 236 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
237 | |
238 | WARN_ON(priv != file->private_data); | |
239 | ||
592c2aba GL |
240 | if (ici->ops->init_videobuf) |
241 | return videobuf_querybuf(&icd->vb_vidq, p); | |
242 | else | |
243 | return vb2_querybuf(&icd->vb2_vidq, p); | |
e55222ef GL |
244 | } |
245 | ||
246 | static int soc_camera_qbuf(struct file *file, void *priv, | |
247 | struct v4l2_buffer *p) | |
248 | { | |
57bee29d | 249 | struct soc_camera_device *icd = file->private_data; |
592c2aba | 250 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
251 | |
252 | WARN_ON(priv != file->private_data); | |
253 | ||
57bee29d GL |
254 | if (icd->streamer != file) |
255 | return -EBUSY; | |
256 | ||
592c2aba GL |
257 | if (ici->ops->init_videobuf) |
258 | return videobuf_qbuf(&icd->vb_vidq, p); | |
259 | else | |
260 | return vb2_qbuf(&icd->vb2_vidq, p); | |
e55222ef GL |
261 | } |
262 | ||
263 | static int soc_camera_dqbuf(struct file *file, void *priv, | |
264 | struct v4l2_buffer *p) | |
265 | { | |
57bee29d | 266 | struct soc_camera_device *icd = file->private_data; |
592c2aba | 267 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
268 | |
269 | WARN_ON(priv != file->private_data); | |
270 | ||
57bee29d GL |
271 | if (icd->streamer != file) |
272 | return -EBUSY; | |
273 | ||
592c2aba GL |
274 | if (ici->ops->init_videobuf) |
275 | return videobuf_dqbuf(&icd->vb_vidq, p, file->f_flags & O_NONBLOCK); | |
276 | else | |
277 | return vb2_dqbuf(&icd->vb2_vidq, p, file->f_flags & O_NONBLOCK); | |
e55222ef GL |
278 | } |
279 | ||
40e2e092 | 280 | /* Always entered with .video_lock held */ |
c2786ad2 GL |
281 | static int soc_camera_init_user_formats(struct soc_camera_device *icd) |
282 | { | |
760697be | 283 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
c2786ad2 | 284 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
3805f201 HV |
285 | unsigned int i, fmts = 0, raw_fmts = 0; |
286 | int ret; | |
760697be GL |
287 | enum v4l2_mbus_pixelcode code; |
288 | ||
289 | while (!v4l2_subdev_call(sd, video, enum_mbus_fmt, raw_fmts, &code)) | |
290 | raw_fmts++; | |
c2786ad2 GL |
291 | |
292 | if (!ici->ops->get_formats) | |
293 | /* | |
294 | * Fallback mode - the host will have to serve all | |
295 | * sensor-provided formats one-to-one to the user | |
296 | */ | |
760697be | 297 | fmts = raw_fmts; |
c2786ad2 GL |
298 | else |
299 | /* | |
300 | * First pass - only count formats this host-sensor | |
301 | * configuration can provide | |
302 | */ | |
760697be | 303 | for (i = 0; i < raw_fmts; i++) { |
fa48984e GL |
304 | ret = ici->ops->get_formats(icd, i, NULL); |
305 | if (ret < 0) | |
306 | return ret; | |
307 | fmts += ret; | |
308 | } | |
c2786ad2 GL |
309 | |
310 | if (!fmts) | |
311 | return -ENXIO; | |
312 | ||
313 | icd->user_formats = | |
314 | vmalloc(fmts * sizeof(struct soc_camera_format_xlate)); | |
315 | if (!icd->user_formats) | |
316 | return -ENOMEM; | |
317 | ||
318 | icd->num_user_formats = fmts; | |
c2786ad2 GL |
319 | |
320 | dev_dbg(&icd->dev, "Found %d supported formats.\n", fmts); | |
321 | ||
322 | /* Second pass - actually fill data formats */ | |
14df2cce | 323 | fmts = 0; |
760697be | 324 | for (i = 0; i < raw_fmts; i++) |
c2786ad2 | 325 | if (!ici->ops->get_formats) { |
760697be GL |
326 | v4l2_subdev_call(sd, video, enum_mbus_fmt, i, &code); |
327 | icd->user_formats[i].host_fmt = | |
328 | soc_mbus_get_fmtdesc(code); | |
329 | icd->user_formats[i].code = code; | |
c2786ad2 | 330 | } else { |
fa48984e GL |
331 | ret = ici->ops->get_formats(icd, i, |
332 | &icd->user_formats[fmts]); | |
333 | if (ret < 0) | |
334 | goto egfmt; | |
335 | fmts += ret; | |
c2786ad2 GL |
336 | } |
337 | ||
760697be | 338 | icd->current_fmt = &icd->user_formats[0]; |
c2786ad2 GL |
339 | |
340 | return 0; | |
fa48984e GL |
341 | |
342 | egfmt: | |
343 | icd->num_user_formats = 0; | |
344 | vfree(icd->user_formats); | |
345 | return ret; | |
c2786ad2 GL |
346 | } |
347 | ||
40e2e092 | 348 | /* Always entered with .video_lock held */ |
c2786ad2 GL |
349 | static void soc_camera_free_user_formats(struct soc_camera_device *icd) |
350 | { | |
fa48984e GL |
351 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
352 | ||
353 | if (ici->ops->put_formats) | |
354 | ici->ops->put_formats(icd); | |
40e2e092 | 355 | icd->current_fmt = NULL; |
fa48984e | 356 | icd->num_user_formats = 0; |
c2786ad2 | 357 | vfree(icd->user_formats); |
40e2e092 | 358 | icd->user_formats = NULL; |
c2786ad2 GL |
359 | } |
360 | ||
6a6c8786 GL |
361 | #define pixfmtstr(x) (x) & 0xff, ((x) >> 8) & 0xff, ((x) >> 16) & 0xff, \ |
362 | ((x) >> 24) & 0xff | |
363 | ||
760697be | 364 | /* Called with .vb_lock held, or from the first open(2), see comment there */ |
57bee29d | 365 | static int soc_camera_set_fmt(struct soc_camera_device *icd, |
df2ed070 GL |
366 | struct v4l2_format *f) |
367 | { | |
df2ed070 GL |
368 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
369 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
370 | int ret; | |
371 | ||
6a6c8786 GL |
372 | dev_dbg(&icd->dev, "S_FMT(%c%c%c%c, %ux%u)\n", |
373 | pixfmtstr(pix->pixelformat), pix->width, pix->height); | |
374 | ||
df2ed070 GL |
375 | /* We always call try_fmt() before set_fmt() or set_crop() */ |
376 | ret = ici->ops->try_fmt(icd, f); | |
377 | if (ret < 0) | |
378 | return ret; | |
379 | ||
380 | ret = ici->ops->set_fmt(icd, f); | |
381 | if (ret < 0) { | |
382 | return ret; | |
383 | } else if (!icd->current_fmt || | |
760697be | 384 | icd->current_fmt->host_fmt->fourcc != pix->pixelformat) { |
2aa58db4 | 385 | dev_err(&icd->dev, |
df2ed070 GL |
386 | "Host driver hasn't set up current format correctly!\n"); |
387 | return -EINVAL; | |
388 | } | |
389 | ||
6a6c8786 GL |
390 | icd->user_width = pix->width; |
391 | icd->user_height = pix->height; | |
760697be | 392 | icd->colorspace = pix->colorspace; |
592c2aba GL |
393 | icd->field = pix->field; |
394 | if (ici->ops->init_videobuf) | |
395 | icd->vb_vidq.field = pix->field; | |
025c18a1 | 396 | |
df2ed070 GL |
397 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
398 | dev_warn(&icd->dev, "Attention! Wrong buf-type %d\n", | |
399 | f->type); | |
400 | ||
401 | dev_dbg(&icd->dev, "set width: %d height: %d\n", | |
6a6c8786 | 402 | icd->user_width, icd->user_height); |
df2ed070 GL |
403 | |
404 | /* set physical bus parameters */ | |
405 | return ici->ops->set_bus_param(icd, pix->pixelformat); | |
406 | } | |
407 | ||
bec43661 | 408 | static int soc_camera_open(struct file *file) |
e55222ef | 409 | { |
979ea1dd | 410 | struct video_device *vdev = video_devdata(file); |
96c75399 GL |
411 | struct soc_camera_device *icd = container_of(vdev->parent, |
412 | struct soc_camera_device, | |
413 | dev); | |
979ea1dd | 414 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
9dc4e48f | 415 | struct soc_camera_host *ici; |
e55222ef GL |
416 | int ret; |
417 | ||
40e2e092 GL |
418 | if (!icd->ops) |
419 | /* No device driver attached */ | |
420 | return -ENODEV; | |
421 | ||
9dc4e48f | 422 | ici = to_soc_camera_host(icd->dev.parent); |
e55222ef | 423 | |
b8d9904c | 424 | if (!try_module_get(ici->ops->owner)) { |
e55222ef | 425 | dev_err(&icd->dev, "Couldn't lock capture bus driver.\n"); |
57bee29d | 426 | return -EINVAL; |
e55222ef GL |
427 | } |
428 | ||
1a0063a9 GL |
429 | icd->use_count++; |
430 | ||
9dc4e48f GL |
431 | /* Now we really have to activate the camera */ |
432 | if (icd->use_count == 1) { | |
025c18a1 | 433 | /* Restore parameters before the last close() per V4L2 API */ |
df2ed070 GL |
434 | struct v4l2_format f = { |
435 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
436 | .fmt.pix = { | |
6a6c8786 GL |
437 | .width = icd->user_width, |
438 | .height = icd->user_height, | |
025c18a1 | 439 | .field = icd->field, |
760697be GL |
440 | .colorspace = icd->colorspace, |
441 | .pixelformat = | |
442 | icd->current_fmt->host_fmt->fourcc, | |
df2ed070 GL |
443 | }, |
444 | }; | |
445 | ||
96e442c1 AP |
446 | ret = soc_camera_power_set(icd, icl, 1); |
447 | if (ret < 0) | |
448 | goto epower; | |
979ea1dd GL |
449 | |
450 | /* The camera could have been already on, try to reset */ | |
451 | if (icl->reset) | |
452 | icl->reset(icd->pdev); | |
453 | ||
b8d9904c | 454 | ret = ici->ops->add(icd); |
9dc4e48f GL |
455 | if (ret < 0) { |
456 | dev_err(&icd->dev, "Couldn't activate the camera: %d\n", ret); | |
9dc4e48f GL |
457 | goto eiciadd; |
458 | } | |
df2ed070 | 459 | |
4f9fb5ed MCC |
460 | pm_runtime_enable(&icd->vdev->dev); |
461 | ret = pm_runtime_resume(&icd->vdev->dev); | |
462 | if (ret < 0 && ret != -ENOSYS) | |
463 | goto eresume; | |
464 | ||
760697be GL |
465 | /* |
466 | * Try to configure with default parameters. Notice: this is the | |
467 | * very first open, so, we cannot race against other calls, | |
468 | * apart from someone else calling open() simultaneously, but | |
469 | * .video_lock is protecting us against it. | |
470 | */ | |
57bee29d | 471 | ret = soc_camera_set_fmt(icd, &f); |
df2ed070 GL |
472 | if (ret < 0) |
473 | goto esfmt; | |
24d8c029 | 474 | |
592c2aba GL |
475 | if (ici->ops->init_videobuf) { |
476 | ici->ops->init_videobuf(&icd->vb_vidq, icd); | |
477 | } else { | |
478 | ret = ici->ops->init_videobuf2(&icd->vb2_vidq, icd); | |
479 | if (ret < 0) | |
480 | goto einitvb; | |
481 | } | |
9dc4e48f GL |
482 | } |
483 | ||
57bee29d | 484 | file->private_data = icd; |
e55222ef GL |
485 | dev_dbg(&icd->dev, "camera device open\n"); |
486 | ||
e55222ef GL |
487 | return 0; |
488 | ||
df2ed070 | 489 | /* |
4f9fb5ed | 490 | * First four errors are entered with the .video_lock held |
df2ed070 GL |
491 | * and use_count == 1 |
492 | */ | |
592c2aba | 493 | einitvb: |
df2ed070 | 494 | esfmt: |
4f9fb5ed MCC |
495 | pm_runtime_disable(&icd->vdev->dev); |
496 | eresume: | |
df2ed070 | 497 | ici->ops->remove(icd); |
9dc4e48f | 498 | eiciadd: |
96e442c1 | 499 | soc_camera_power_set(icd, icl, 0); |
979ea1dd | 500 | epower: |
c2786ad2 | 501 | icd->use_count--; |
b8d9904c | 502 | module_put(ici->ops->owner); |
57bee29d | 503 | |
e55222ef GL |
504 | return ret; |
505 | } | |
506 | ||
bec43661 | 507 | static int soc_camera_close(struct file *file) |
e55222ef | 508 | { |
57bee29d | 509 | struct soc_camera_device *icd = file->private_data; |
e55222ef | 510 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef | 511 | |
9dc4e48f | 512 | icd->use_count--; |
40e2e092 | 513 | if (!icd->use_count) { |
979ea1dd GL |
514 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
515 | ||
4f9fb5ed MCC |
516 | pm_runtime_suspend(&icd->vdev->dev); |
517 | pm_runtime_disable(&icd->vdev->dev); | |
518 | ||
b8d9904c | 519 | ici->ops->remove(icd); |
592c2aba GL |
520 | if (ici->ops->init_videobuf2) |
521 | vb2_queue_release(&icd->vb2_vidq); | |
4f9fb5ed | 522 | |
96e442c1 | 523 | soc_camera_power_set(icd, icl, 0); |
40e2e092 | 524 | } |
025c18a1 | 525 | |
57bee29d GL |
526 | if (icd->streamer == file) |
527 | icd->streamer = NULL; | |
528 | ||
b8d9904c | 529 | module_put(ici->ops->owner); |
9dc4e48f | 530 | |
2aa58db4 | 531 | dev_dbg(&icd->dev, "camera device close\n"); |
e55222ef GL |
532 | |
533 | return 0; | |
534 | } | |
535 | ||
aba360d8 | 536 | static ssize_t soc_camera_read(struct file *file, char __user *buf, |
abe4c471 | 537 | size_t count, loff_t *ppos) |
e55222ef | 538 | { |
57bee29d | 539 | struct soc_camera_device *icd = file->private_data; |
e55222ef GL |
540 | int err = -EINVAL; |
541 | ||
2aa58db4 | 542 | dev_err(&icd->dev, "camera device read not implemented\n"); |
e55222ef GL |
543 | |
544 | return err; | |
545 | } | |
546 | ||
547 | static int soc_camera_mmap(struct file *file, struct vm_area_struct *vma) | |
548 | { | |
57bee29d | 549 | struct soc_camera_device *icd = file->private_data; |
592c2aba | 550 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
551 | int err; |
552 | ||
553 | dev_dbg(&icd->dev, "mmap called, vma=0x%08lx\n", (unsigned long)vma); | |
554 | ||
57bee29d GL |
555 | if (icd->streamer != file) |
556 | return -EBUSY; | |
557 | ||
592c2aba GL |
558 | if (ici->ops->init_videobuf) |
559 | err = videobuf_mmap_mapper(&icd->vb_vidq, vma); | |
560 | else | |
561 | err = vb2_mmap(&icd->vb2_vidq, vma); | |
e55222ef GL |
562 | |
563 | dev_dbg(&icd->dev, "vma start=0x%08lx, size=%ld, ret=%d\n", | |
564 | (unsigned long)vma->vm_start, | |
565 | (unsigned long)vma->vm_end - (unsigned long)vma->vm_start, | |
566 | err); | |
567 | ||
568 | return err; | |
569 | } | |
570 | ||
571 | static unsigned int soc_camera_poll(struct file *file, poll_table *pt) | |
572 | { | |
57bee29d | 573 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 574 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef | 575 | |
57bee29d GL |
576 | if (icd->streamer != file) |
577 | return -EBUSY; | |
578 | ||
592c2aba | 579 | if (ici->ops->init_videobuf && list_empty(&icd->vb_vidq.stream)) { |
e55222ef GL |
580 | dev_err(&icd->dev, "Trying to poll with no queued buffers!\n"); |
581 | return POLLERR; | |
582 | } | |
583 | ||
b8d9904c | 584 | return ici->ops->poll(file, pt); |
e55222ef GL |
585 | } |
586 | ||
592c2aba GL |
587 | void soc_camera_lock(struct vb2_queue *vq) |
588 | { | |
589 | struct soc_camera_device *icd = vb2_get_drv_priv(vq); | |
590 | mutex_lock(&icd->video_lock); | |
591 | } | |
592 | EXPORT_SYMBOL(soc_camera_lock); | |
593 | ||
594 | void soc_camera_unlock(struct vb2_queue *vq) | |
595 | { | |
596 | struct soc_camera_device *icd = vb2_get_drv_priv(vq); | |
597 | mutex_unlock(&icd->video_lock); | |
598 | } | |
599 | EXPORT_SYMBOL(soc_camera_unlock); | |
600 | ||
bec43661 | 601 | static struct v4l2_file_operations soc_camera_fops = { |
e55222ef GL |
602 | .owner = THIS_MODULE, |
603 | .open = soc_camera_open, | |
604 | .release = soc_camera_close, | |
b6a633c1 | 605 | .unlocked_ioctl = video_ioctl2, |
e55222ef GL |
606 | .read = soc_camera_read, |
607 | .mmap = soc_camera_mmap, | |
608 | .poll = soc_camera_poll, | |
e55222ef GL |
609 | }; |
610 | ||
72937890 | 611 | static int soc_camera_s_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 612 | struct v4l2_format *f) |
e55222ef | 613 | { |
57bee29d | 614 | struct soc_camera_device *icd = file->private_data; |
e55222ef | 615 | int ret; |
e55222ef GL |
616 | |
617 | WARN_ON(priv != file->private_data); | |
618 | ||
57bee29d GL |
619 | if (icd->streamer && icd->streamer != file) |
620 | return -EBUSY; | |
1c3bb743 | 621 | |
57bee29d | 622 | if (icd->vb_vidq.bufs[0]) { |
b897a91a | 623 | dev_err(&icd->dev, "S_FMT denied: queue initialised\n"); |
b6a633c1 | 624 | return -EBUSY; |
1c3bb743 GL |
625 | } |
626 | ||
57bee29d GL |
627 | ret = soc_camera_set_fmt(icd, f); |
628 | ||
629 | if (!ret && !icd->streamer) | |
630 | icd->streamer = file; | |
1c3bb743 | 631 | |
1c3bb743 | 632 | return ret; |
e55222ef GL |
633 | } |
634 | ||
72937890 | 635 | static int soc_camera_enum_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 636 | struct v4l2_fmtdesc *f) |
e55222ef | 637 | { |
57bee29d | 638 | struct soc_camera_device *icd = file->private_data; |
760697be | 639 | const struct soc_mbus_pixelfmt *format; |
e55222ef GL |
640 | |
641 | WARN_ON(priv != file->private_data); | |
642 | ||
c2786ad2 | 643 | if (f->index >= icd->num_user_formats) |
e55222ef GL |
644 | return -EINVAL; |
645 | ||
c2786ad2 | 646 | format = icd->user_formats[f->index].host_fmt; |
e55222ef | 647 | |
760697be GL |
648 | if (format->name) |
649 | strlcpy(f->description, format->name, sizeof(f->description)); | |
e55222ef GL |
650 | f->pixelformat = format->fourcc; |
651 | return 0; | |
652 | } | |
653 | ||
72937890 | 654 | static int soc_camera_g_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 655 | struct v4l2_format *f) |
e55222ef | 656 | { |
57bee29d | 657 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 658 | struct v4l2_pix_format *pix = &f->fmt.pix; |
e55222ef GL |
659 | |
660 | WARN_ON(priv != file->private_data); | |
661 | ||
6a6c8786 GL |
662 | pix->width = icd->user_width; |
663 | pix->height = icd->user_height; | |
592c2aba | 664 | pix->field = icd->field; |
760697be GL |
665 | pix->pixelformat = icd->current_fmt->host_fmt->fourcc; |
666 | pix->bytesperline = soc_mbus_bytes_per_line(pix->width, | |
667 | icd->current_fmt->host_fmt); | |
668 | pix->colorspace = icd->colorspace; | |
669 | if (pix->bytesperline < 0) | |
670 | return pix->bytesperline; | |
64f5905e | 671 | pix->sizeimage = pix->height * pix->bytesperline; |
e55222ef | 672 | dev_dbg(&icd->dev, "current_fmt->fourcc: 0x%08x\n", |
760697be | 673 | icd->current_fmt->host_fmt->fourcc); |
e55222ef GL |
674 | return 0; |
675 | } | |
676 | ||
677 | static int soc_camera_querycap(struct file *file, void *priv, | |
678 | struct v4l2_capability *cap) | |
679 | { | |
57bee29d | 680 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 681 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
682 | |
683 | WARN_ON(priv != file->private_data); | |
684 | ||
685 | strlcpy(cap->driver, ici->drv_name, sizeof(cap->driver)); | |
b8d9904c | 686 | return ici->ops->querycap(ici, cap); |
e55222ef GL |
687 | } |
688 | ||
689 | static int soc_camera_streamon(struct file *file, void *priv, | |
690 | enum v4l2_buf_type i) | |
691 | { | |
57bee29d | 692 | struct soc_camera_device *icd = file->private_data; |
592c2aba | 693 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
c9c1f1c0 | 694 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
1c3bb743 | 695 | int ret; |
e55222ef GL |
696 | |
697 | WARN_ON(priv != file->private_data); | |
698 | ||
e55222ef GL |
699 | if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
700 | return -EINVAL; | |
701 | ||
57bee29d GL |
702 | if (icd->streamer != file) |
703 | return -EBUSY; | |
704 | ||
e55222ef | 705 | /* This calls buf_queue from host driver's videobuf_queue_ops */ |
592c2aba GL |
706 | if (ici->ops->init_videobuf) |
707 | ret = videobuf_streamon(&icd->vb_vidq); | |
708 | else | |
709 | ret = vb2_streamon(&icd->vb2_vidq, i); | |
710 | ||
7fdbd85b AG |
711 | if (!ret) |
712 | v4l2_subdev_call(sd, video, s_stream, 1); | |
1c3bb743 | 713 | |
1c3bb743 | 714 | return ret; |
e55222ef GL |
715 | } |
716 | ||
717 | static int soc_camera_streamoff(struct file *file, void *priv, | |
718 | enum v4l2_buf_type i) | |
719 | { | |
57bee29d | 720 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 721 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
592c2aba | 722 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
723 | |
724 | WARN_ON(priv != file->private_data); | |
725 | ||
e55222ef GL |
726 | if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
727 | return -EINVAL; | |
728 | ||
57bee29d GL |
729 | if (icd->streamer != file) |
730 | return -EBUSY; | |
731 | ||
5d28d525 GL |
732 | /* |
733 | * This calls buf_release from host driver's videobuf_queue_ops for all | |
734 | * remaining buffers. When the last buffer is freed, stop capture | |
735 | */ | |
592c2aba GL |
736 | if (ici->ops->init_videobuf) |
737 | videobuf_streamoff(&icd->vb_vidq); | |
738 | else | |
739 | vb2_streamoff(&icd->vb2_vidq, i); | |
e55222ef | 740 | |
c9c1f1c0 | 741 | v4l2_subdev_call(sd, video, s_stream, 0); |
e55222ef GL |
742 | |
743 | return 0; | |
744 | } | |
745 | ||
746 | static int soc_camera_queryctrl(struct file *file, void *priv, | |
747 | struct v4l2_queryctrl *qc) | |
748 | { | |
57bee29d | 749 | struct soc_camera_device *icd = file->private_data; |
2840d249 | 750 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
751 | int i; |
752 | ||
753 | WARN_ON(priv != file->private_data); | |
754 | ||
755 | if (!qc->id) | |
756 | return -EINVAL; | |
757 | ||
2840d249 GL |
758 | /* First check host controls */ |
759 | for (i = 0; i < ici->ops->num_controls; i++) | |
760 | if (qc->id == ici->ops->controls[i].id) { | |
761 | memcpy(qc, &(ici->ops->controls[i]), | |
762 | sizeof(*qc)); | |
763 | return 0; | |
764 | } | |
765 | ||
766 | /* Then device controls */ | |
e55222ef GL |
767 | for (i = 0; i < icd->ops->num_controls; i++) |
768 | if (qc->id == icd->ops->controls[i].id) { | |
769 | memcpy(qc, &(icd->ops->controls[i]), | |
770 | sizeof(*qc)); | |
771 | return 0; | |
772 | } | |
773 | ||
774 | return -EINVAL; | |
775 | } | |
776 | ||
777 | static int soc_camera_g_ctrl(struct file *file, void *priv, | |
778 | struct v4l2_control *ctrl) | |
779 | { | |
57bee29d | 780 | struct soc_camera_device *icd = file->private_data; |
979ea1dd | 781 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
c9c1f1c0 | 782 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
2840d249 | 783 | int ret; |
e55222ef GL |
784 | |
785 | WARN_ON(priv != file->private_data); | |
786 | ||
2840d249 GL |
787 | if (ici->ops->get_ctrl) { |
788 | ret = ici->ops->get_ctrl(icd, ctrl); | |
789 | if (ret != -ENOIOCTLCMD) | |
790 | return ret; | |
791 | } | |
792 | ||
c9c1f1c0 | 793 | return v4l2_subdev_call(sd, core, g_ctrl, ctrl); |
e55222ef GL |
794 | } |
795 | ||
796 | static int soc_camera_s_ctrl(struct file *file, void *priv, | |
797 | struct v4l2_control *ctrl) | |
798 | { | |
57bee29d | 799 | struct soc_camera_device *icd = file->private_data; |
979ea1dd | 800 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
c9c1f1c0 | 801 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
2840d249 | 802 | int ret; |
e55222ef GL |
803 | |
804 | WARN_ON(priv != file->private_data); | |
805 | ||
2840d249 GL |
806 | if (ici->ops->set_ctrl) { |
807 | ret = ici->ops->set_ctrl(icd, ctrl); | |
808 | if (ret != -ENOIOCTLCMD) | |
809 | return ret; | |
810 | } | |
811 | ||
c9c1f1c0 | 812 | return v4l2_subdev_call(sd, core, s_ctrl, ctrl); |
e55222ef GL |
813 | } |
814 | ||
815 | static int soc_camera_cropcap(struct file *file, void *fh, | |
816 | struct v4l2_cropcap *a) | |
817 | { | |
57bee29d | 818 | struct soc_camera_device *icd = file->private_data; |
6a6c8786 | 819 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef | 820 | |
6a6c8786 | 821 | return ici->ops->cropcap(icd, a); |
e55222ef GL |
822 | } |
823 | ||
824 | static int soc_camera_g_crop(struct file *file, void *fh, | |
825 | struct v4l2_crop *a) | |
826 | { | |
57bee29d | 827 | struct soc_camera_device *icd = file->private_data; |
6a6c8786 GL |
828 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
829 | int ret; | |
e55222ef | 830 | |
6a6c8786 | 831 | ret = ici->ops->get_crop(icd, a); |
e55222ef | 832 | |
6a6c8786 | 833 | return ret; |
e55222ef GL |
834 | } |
835 | ||
68a54f0e GL |
836 | /* |
837 | * According to the V4L2 API, drivers shall not update the struct v4l2_crop | |
838 | * argument with the actual geometry, instead, the user shall use G_CROP to | |
ab56d5eb | 839 | * retrieve it. |
68a54f0e | 840 | */ |
e55222ef GL |
841 | static int soc_camera_s_crop(struct file *file, void *fh, |
842 | struct v4l2_crop *a) | |
843 | { | |
57bee29d | 844 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 845 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
6a6c8786 GL |
846 | struct v4l2_rect *rect = &a->c; |
847 | struct v4l2_crop current_crop; | |
e55222ef GL |
848 | int ret; |
849 | ||
850 | if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
851 | return -EINVAL; | |
852 | ||
6a6c8786 GL |
853 | dev_dbg(&icd->dev, "S_CROP(%ux%u@%u:%u)\n", |
854 | rect->width, rect->height, rect->left, rect->top); | |
855 | ||
6a6c8786 GL |
856 | /* If get_crop fails, we'll let host and / or client drivers decide */ |
857 | ret = ici->ops->get_crop(icd, ¤t_crop); | |
858 | ||
b897a91a | 859 | /* Prohibit window size change with initialised buffers */ |
103754a0 GL |
860 | if (ret < 0) { |
861 | dev_err(&icd->dev, | |
862 | "S_CROP denied: getting current crop failed\n"); | |
57bee29d | 863 | } else if (icd->vb_vidq.bufs[0] && |
103754a0 GL |
864 | (a->c.width != current_crop.c.width || |
865 | a->c.height != current_crop.c.height)) { | |
b897a91a GL |
866 | dev_err(&icd->dev, |
867 | "S_CROP denied: queue initialised and sizes differ\n"); | |
868 | ret = -EBUSY; | |
6a6c8786 GL |
869 | } else { |
870 | ret = ici->ops->set_crop(icd, a); | |
b897a91a GL |
871 | } |
872 | ||
e55222ef GL |
873 | return ret; |
874 | } | |
875 | ||
c9f6ef69 GL |
876 | static int soc_camera_g_parm(struct file *file, void *fh, |
877 | struct v4l2_streamparm *a) | |
878 | { | |
57bee29d | 879 | struct soc_camera_device *icd = file->private_data; |
c9f6ef69 GL |
880 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
881 | ||
882 | if (ici->ops->get_parm) | |
883 | return ici->ops->get_parm(icd, a); | |
884 | ||
885 | return -ENOIOCTLCMD; | |
886 | } | |
887 | ||
888 | static int soc_camera_s_parm(struct file *file, void *fh, | |
889 | struct v4l2_streamparm *a) | |
890 | { | |
57bee29d | 891 | struct soc_camera_device *icd = file->private_data; |
c9f6ef69 GL |
892 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
893 | ||
894 | if (ici->ops->set_parm) | |
895 | return ici->ops->set_parm(icd, a); | |
896 | ||
897 | return -ENOIOCTLCMD; | |
898 | } | |
899 | ||
e55222ef | 900 | static int soc_camera_g_chip_ident(struct file *file, void *fh, |
aecde8b5 | 901 | struct v4l2_dbg_chip_ident *id) |
e55222ef | 902 | { |
57bee29d | 903 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 904 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
e55222ef | 905 | |
c9c1f1c0 | 906 | return v4l2_subdev_call(sd, core, g_chip_ident, id); |
e55222ef GL |
907 | } |
908 | ||
909 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
910 | static int soc_camera_g_register(struct file *file, void *fh, | |
aecde8b5 | 911 | struct v4l2_dbg_register *reg) |
e55222ef | 912 | { |
57bee29d | 913 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 914 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
e55222ef | 915 | |
c9c1f1c0 | 916 | return v4l2_subdev_call(sd, core, g_register, reg); |
e55222ef GL |
917 | } |
918 | ||
919 | static int soc_camera_s_register(struct file *file, void *fh, | |
aecde8b5 | 920 | struct v4l2_dbg_register *reg) |
e55222ef | 921 | { |
57bee29d | 922 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 923 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
e55222ef | 924 | |
c9c1f1c0 | 925 | return v4l2_subdev_call(sd, core, s_register, reg); |
e55222ef GL |
926 | } |
927 | #endif | |
928 | ||
e55222ef GL |
929 | /* So far this function cannot fail */ |
930 | static void scan_add_host(struct soc_camera_host *ici) | |
931 | { | |
932 | struct soc_camera_device *icd; | |
933 | ||
934 | mutex_lock(&list_lock); | |
935 | ||
936 | list_for_each_entry(icd, &devices, list) { | |
937 | if (icd->iface == ici->nr) { | |
40e2e092 | 938 | int ret; |
979ea1dd | 939 | icd->dev.parent = ici->v4l2_dev.dev; |
40e2e092 GL |
940 | dev_set_name(&icd->dev, "%u-%u", icd->iface, |
941 | icd->devnum); | |
942 | ret = device_register(&icd->dev); | |
943 | if (ret < 0) { | |
944 | icd->dev.parent = NULL; | |
945 | dev_err(&icd->dev, | |
946 | "Cannot register device: %d\n", ret); | |
947 | } | |
e55222ef GL |
948 | } |
949 | } | |
950 | ||
951 | mutex_unlock(&list_lock); | |
952 | } | |
953 | ||
40e2e092 GL |
954 | #ifdef CONFIG_I2C_BOARDINFO |
955 | static int soc_camera_init_i2c(struct soc_camera_device *icd, | |
956 | struct soc_camera_link *icl) | |
e55222ef | 957 | { |
40e2e092 | 958 | struct i2c_client *client; |
979ea1dd | 959 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
40e2e092 | 960 | struct i2c_adapter *adap = i2c_get_adapter(icl->i2c_adapter_id); |
979ea1dd | 961 | struct v4l2_subdev *subdev; |
e55222ef | 962 | |
40e2e092 | 963 | if (!adap) { |
40e2e092 GL |
964 | dev_err(&icd->dev, "Cannot get I2C adapter #%d. No driver?\n", |
965 | icl->i2c_adapter_id); | |
966 | goto ei2cga; | |
967 | } | |
e55222ef | 968 | |
40e2e092 | 969 | icl->board_info->platform_data = icd; |
e55222ef | 970 | |
979ea1dd | 971 | subdev = v4l2_i2c_new_subdev_board(&ici->v4l2_dev, adap, |
9a1f8b34 | 972 | icl->board_info, NULL); |
d74f841c | 973 | if (!subdev) |
40e2e092 | 974 | goto ei2cnd; |
e55222ef | 975 | |
c4ce6d14 | 976 | client = v4l2_get_subdevdata(subdev); |
979ea1dd | 977 | |
40e2e092 GL |
978 | /* Use to_i2c_client(dev) to recover the i2c client */ |
979 | dev_set_drvdata(&icd->dev, &client->dev); | |
e55222ef | 980 | |
40e2e092 GL |
981 | return 0; |
982 | ei2cnd: | |
983 | i2c_put_adapter(adap); | |
984 | ei2cga: | |
d74f841c | 985 | return -ENODEV; |
e55222ef GL |
986 | } |
987 | ||
40e2e092 GL |
988 | static void soc_camera_free_i2c(struct soc_camera_device *icd) |
989 | { | |
990 | struct i2c_client *client = | |
991 | to_i2c_client(to_soc_camera_control(icd)); | |
992 | dev_set_drvdata(&icd->dev, NULL); | |
979ea1dd | 993 | v4l2_device_unregister_subdev(i2c_get_clientdata(client)); |
40e2e092 GL |
994 | i2c_unregister_device(client); |
995 | i2c_put_adapter(client->adapter); | |
996 | } | |
997 | #else | |
998 | #define soc_camera_init_i2c(icd, icl) (-ENODEV) | |
999 | #define soc_camera_free_i2c(icd) do {} while (0) | |
1000 | #endif | |
1001 | ||
979ea1dd | 1002 | static int soc_camera_video_start(struct soc_camera_device *icd); |
40e2e092 GL |
1003 | static int video_dev_create(struct soc_camera_device *icd); |
1004 | /* Called during host-driver probe */ | |
e55222ef GL |
1005 | static int soc_camera_probe(struct device *dev) |
1006 | { | |
1007 | struct soc_camera_device *icd = to_soc_camera_dev(dev); | |
979ea1dd | 1008 | struct soc_camera_host *ici = to_soc_camera_host(dev->parent); |
40e2e092 | 1009 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
979ea1dd | 1010 | struct device *control = NULL; |
6a6c8786 | 1011 | struct v4l2_subdev *sd; |
760697be | 1012 | struct v4l2_mbus_framefmt mf; |
e55222ef GL |
1013 | int ret; |
1014 | ||
40e2e092 | 1015 | dev_info(dev, "Probing %s\n", dev_name(dev)); |
1c3bb743 | 1016 | |
96e442c1 AP |
1017 | ret = regulator_bulk_get(icd->pdev, icl->num_regulators, |
1018 | icl->regulators); | |
1019 | if (ret < 0) | |
1020 | goto ereg; | |
1021 | ||
1022 | ret = soc_camera_power_set(icd, icl, 1); | |
1023 | if (ret < 0) | |
1024 | goto epower; | |
979ea1dd GL |
1025 | |
1026 | /* The camera could have been already on, try to reset */ | |
1027 | if (icl->reset) | |
1028 | icl->reset(icd->pdev); | |
1029 | ||
1030 | ret = ici->ops->add(icd); | |
1031 | if (ret < 0) | |
1032 | goto eadd; | |
1033 | ||
1034 | /* Must have icd->vdev before registering the device */ | |
40e2e092 GL |
1035 | ret = video_dev_create(icd); |
1036 | if (ret < 0) | |
1037 | goto evdc; | |
1c3bb743 | 1038 | |
40e2e092 GL |
1039 | /* Non-i2c cameras, e.g., soc_camera_platform, have no board_info */ |
1040 | if (icl->board_info) { | |
1041 | ret = soc_camera_init_i2c(icd, icl); | |
1042 | if (ret < 0) | |
1043 | goto eadddev; | |
1044 | } else if (!icl->add_device || !icl->del_device) { | |
1c3bb743 | 1045 | ret = -EINVAL; |
40e2e092 GL |
1046 | goto eadddev; |
1047 | } else { | |
979ea1dd GL |
1048 | if (icl->module_name) |
1049 | ret = request_module(icl->module_name); | |
1050 | ||
40e2e092 GL |
1051 | ret = icl->add_device(icl, &icd->dev); |
1052 | if (ret < 0) | |
1053 | goto eadddev; | |
1c3bb743 | 1054 | |
96c75399 GL |
1055 | /* |
1056 | * FIXME: this is racy, have to use driver-binding notification, | |
1057 | * when it is available | |
1058 | */ | |
979ea1dd | 1059 | control = to_soc_camera_control(icd); |
08590b96 | 1060 | if (!control || !control->driver || !dev_get_drvdata(control) || |
979ea1dd GL |
1061 | !try_module_get(control->driver->owner)) { |
1062 | icl->del_device(icl); | |
1063 | goto enodrv; | |
1064 | } | |
40e2e092 | 1065 | } |
e55222ef | 1066 | |
fa48984e GL |
1067 | /* At this point client .probe() should have run already */ |
1068 | ret = soc_camera_init_user_formats(icd); | |
1069 | if (ret < 0) | |
1070 | goto eiufmt; | |
1071 | ||
fa48984e GL |
1072 | icd->field = V4L2_FIELD_ANY; |
1073 | ||
b6a633c1 GL |
1074 | icd->vdev->lock = &icd->video_lock; |
1075 | ||
1076 | /* | |
1077 | * ..._video_start() will create a device node, video_register_device() | |
1078 | * itself is protected against concurrent open() calls, but we also have | |
1079 | * to protect our data. | |
1080 | */ | |
979ea1dd GL |
1081 | mutex_lock(&icd->video_lock); |
1082 | ||
1083 | ret = soc_camera_video_start(icd); | |
1084 | if (ret < 0) | |
1085 | goto evidstart; | |
1086 | ||
6a6c8786 GL |
1087 | /* Try to improve our guess of a reasonable window format */ |
1088 | sd = soc_camera_to_subdev(icd); | |
760697be GL |
1089 | if (!v4l2_subdev_call(sd, video, g_mbus_fmt, &mf)) { |
1090 | icd->user_width = mf.width; | |
1091 | icd->user_height = mf.height; | |
1092 | icd->colorspace = mf.colorspace; | |
1093 | icd->field = mf.field; | |
6a6c8786 GL |
1094 | } |
1095 | ||
40e2e092 | 1096 | /* Do we have to sysfs_remove_link() before device_unregister()? */ |
6a6c8786 | 1097 | if (sysfs_create_link(&icd->dev.kobj, &to_soc_camera_control(icd)->kobj, |
40e2e092 GL |
1098 | "control")) |
1099 | dev_warn(&icd->dev, "Failed creating the control symlink\n"); | |
025c18a1 | 1100 | |
979ea1dd GL |
1101 | ici->ops->remove(icd); |
1102 | ||
96e442c1 | 1103 | soc_camera_power_set(icd, icl, 0); |
979ea1dd GL |
1104 | |
1105 | mutex_unlock(&icd->video_lock); | |
025c18a1 | 1106 | |
40e2e092 | 1107 | return 0; |
e55222ef | 1108 | |
979ea1dd GL |
1109 | evidstart: |
1110 | mutex_unlock(&icd->video_lock); | |
fa48984e GL |
1111 | soc_camera_free_user_formats(icd); |
1112 | eiufmt: | |
979ea1dd | 1113 | if (icl->board_info) { |
40e2e092 | 1114 | soc_camera_free_i2c(icd); |
979ea1dd | 1115 | } else { |
40e2e092 | 1116 | icl->del_device(icl); |
979ea1dd GL |
1117 | module_put(control->driver->owner); |
1118 | } | |
1119 | enodrv: | |
40e2e092 GL |
1120 | eadddev: |
1121 | video_device_release(icd->vdev); | |
1122 | evdc: | |
979ea1dd GL |
1123 | ici->ops->remove(icd); |
1124 | eadd: | |
96e442c1 | 1125 | soc_camera_power_set(icd, icl, 0); |
979ea1dd | 1126 | epower: |
96e442c1 AP |
1127 | regulator_bulk_free(icl->num_regulators, icl->regulators); |
1128 | ereg: | |
e55222ef GL |
1129 | return ret; |
1130 | } | |
1131 | ||
5d28d525 GL |
1132 | /* |
1133 | * This is called on device_unregister, which only means we have to disconnect | |
1134 | * from the host, but not remove ourselves from the device list | |
1135 | */ | |
e55222ef GL |
1136 | static int soc_camera_remove(struct device *dev) |
1137 | { | |
1138 | struct soc_camera_device *icd = to_soc_camera_dev(dev); | |
40e2e092 GL |
1139 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
1140 | struct video_device *vdev = icd->vdev; | |
e55222ef | 1141 | |
40e2e092 | 1142 | BUG_ON(!dev->parent); |
e55222ef | 1143 | |
40e2e092 | 1144 | if (vdev) { |
40e2e092 GL |
1145 | video_unregister_device(vdev); |
1146 | icd->vdev = NULL; | |
40e2e092 GL |
1147 | } |
1148 | ||
979ea1dd | 1149 | if (icl->board_info) { |
40e2e092 | 1150 | soc_camera_free_i2c(icd); |
979ea1dd GL |
1151 | } else { |
1152 | struct device_driver *drv = to_soc_camera_control(icd) ? | |
1153 | to_soc_camera_control(icd)->driver : NULL; | |
1154 | if (drv) { | |
1155 | icl->del_device(icl); | |
1156 | module_put(drv->owner); | |
1157 | } | |
1158 | } | |
fa48984e | 1159 | soc_camera_free_user_formats(icd); |
025c18a1 | 1160 | |
96e442c1 AP |
1161 | regulator_bulk_free(icl->num_regulators, icl->regulators); |
1162 | ||
e55222ef GL |
1163 | return 0; |
1164 | } | |
1165 | ||
2e521061 RJ |
1166 | static int soc_camera_suspend(struct device *dev, pm_message_t state) |
1167 | { | |
1168 | struct soc_camera_device *icd = to_soc_camera_dev(dev); | |
1169 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1170 | int ret = 0; | |
1171 | ||
1172 | if (ici->ops->suspend) | |
1173 | ret = ici->ops->suspend(icd, state); | |
1174 | ||
1175 | return ret; | |
1176 | } | |
1177 | ||
1178 | static int soc_camera_resume(struct device *dev) | |
1179 | { | |
1180 | struct soc_camera_device *icd = to_soc_camera_dev(dev); | |
1181 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1182 | int ret = 0; | |
1183 | ||
1184 | if (ici->ops->resume) | |
1185 | ret = ici->ops->resume(icd); | |
1186 | ||
1187 | return ret; | |
1188 | } | |
1189 | ||
52d268a3 | 1190 | struct bus_type soc_camera_bus_type = { |
e55222ef GL |
1191 | .name = "soc-camera", |
1192 | .probe = soc_camera_probe, | |
1193 | .remove = soc_camera_remove, | |
2e521061 RJ |
1194 | .suspend = soc_camera_suspend, |
1195 | .resume = soc_camera_resume, | |
e55222ef | 1196 | }; |
52d268a3 | 1197 | EXPORT_SYMBOL_GPL(soc_camera_bus_type); |
e55222ef GL |
1198 | |
1199 | static struct device_driver ic_drv = { | |
1200 | .name = "camera", | |
1201 | .bus = &soc_camera_bus_type, | |
1202 | .owner = THIS_MODULE, | |
1203 | }; | |
1204 | ||
e55222ef GL |
1205 | static void dummy_release(struct device *dev) |
1206 | { | |
1207 | } | |
1208 | ||
6a6c8786 GL |
1209 | static int default_cropcap(struct soc_camera_device *icd, |
1210 | struct v4l2_cropcap *a) | |
1211 | { | |
1212 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1213 | return v4l2_subdev_call(sd, video, cropcap, a); | |
1214 | } | |
1215 | ||
1216 | static int default_g_crop(struct soc_camera_device *icd, struct v4l2_crop *a) | |
1217 | { | |
1218 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1219 | return v4l2_subdev_call(sd, video, g_crop, a); | |
1220 | } | |
1221 | ||
1222 | static int default_s_crop(struct soc_camera_device *icd, struct v4l2_crop *a) | |
1223 | { | |
1224 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1225 | return v4l2_subdev_call(sd, video, s_crop, a); | |
1226 | } | |
1227 | ||
06e17821 JK |
1228 | static int default_g_parm(struct soc_camera_device *icd, |
1229 | struct v4l2_streamparm *parm) | |
1230 | { | |
1231 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1232 | return v4l2_subdev_call(sd, video, g_parm, parm); | |
1233 | } | |
1234 | ||
1235 | static int default_s_parm(struct soc_camera_device *icd, | |
1236 | struct v4l2_streamparm *parm) | |
1237 | { | |
1238 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1239 | return v4l2_subdev_call(sd, video, s_parm, parm); | |
1240 | } | |
1241 | ||
ed5b65dc QX |
1242 | static int default_enum_fsizes(struct soc_camera_device *icd, |
1243 | struct v4l2_frmsizeenum *fsize) | |
1244 | { | |
1245 | int ret; | |
1246 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1247 | const struct soc_camera_format_xlate *xlate; | |
1248 | __u32 pixfmt = fsize->pixel_format; | |
1249 | struct v4l2_frmsizeenum fsize_mbus = *fsize; | |
1250 | ||
1251 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); | |
1252 | if (!xlate) | |
1253 | return -EINVAL; | |
1254 | /* map xlate-code to pixel_format, sensor only handle xlate-code*/ | |
1255 | fsize_mbus.pixel_format = xlate->code; | |
1256 | ||
1257 | ret = v4l2_subdev_call(sd, video, enum_mbus_fsizes, &fsize_mbus); | |
1258 | if (ret < 0) | |
1259 | return ret; | |
1260 | ||
1261 | *fsize = fsize_mbus; | |
1262 | fsize->pixel_format = pixfmt; | |
1263 | ||
1264 | return 0; | |
1265 | } | |
1266 | ||
64ff9ba5 GL |
1267 | static void soc_camera_device_init(struct device *dev, void *pdata) |
1268 | { | |
1269 | dev->platform_data = pdata; | |
1270 | dev->bus = &soc_camera_bus_type; | |
1271 | dev->release = dummy_release; | |
1272 | } | |
1273 | ||
b8d9904c | 1274 | int soc_camera_host_register(struct soc_camera_host *ici) |
e55222ef | 1275 | { |
e55222ef | 1276 | struct soc_camera_host *ix; |
979ea1dd | 1277 | int ret; |
e55222ef | 1278 | |
64f5905e GL |
1279 | if (!ici || !ici->ops || |
1280 | !ici->ops->try_fmt || | |
1281 | !ici->ops->set_fmt || | |
1282 | !ici->ops->set_bus_param || | |
1283 | !ici->ops->querycap || | |
592c2aba GL |
1284 | ((!ici->ops->init_videobuf || |
1285 | !ici->ops->reqbufs) && | |
1286 | !ici->ops->init_videobuf2) || | |
64f5905e GL |
1287 | !ici->ops->add || |
1288 | !ici->ops->remove || | |
eff505fa | 1289 | !ici->ops->poll || |
979ea1dd | 1290 | !ici->v4l2_dev.dev) |
e55222ef GL |
1291 | return -EINVAL; |
1292 | ||
6a6c8786 GL |
1293 | if (!ici->ops->set_crop) |
1294 | ici->ops->set_crop = default_s_crop; | |
1295 | if (!ici->ops->get_crop) | |
1296 | ici->ops->get_crop = default_g_crop; | |
1297 | if (!ici->ops->cropcap) | |
1298 | ici->ops->cropcap = default_cropcap; | |
06e17821 JK |
1299 | if (!ici->ops->set_parm) |
1300 | ici->ops->set_parm = default_s_parm; | |
1301 | if (!ici->ops->get_parm) | |
1302 | ici->ops->get_parm = default_g_parm; | |
ed5b65dc QX |
1303 | if (!ici->ops->enum_fsizes) |
1304 | ici->ops->enum_fsizes = default_enum_fsizes; | |
6a6c8786 | 1305 | |
e55222ef GL |
1306 | mutex_lock(&list_lock); |
1307 | list_for_each_entry(ix, &hosts, list) { | |
1308 | if (ix->nr == ici->nr) { | |
979ea1dd GL |
1309 | ret = -EBUSY; |
1310 | goto edevreg; | |
e55222ef GL |
1311 | } |
1312 | } | |
1313 | ||
979ea1dd GL |
1314 | ret = v4l2_device_register(ici->v4l2_dev.dev, &ici->v4l2_dev); |
1315 | if (ret < 0) | |
1316 | goto edevreg; | |
eff505fa | 1317 | |
e55222ef GL |
1318 | list_add_tail(&ici->list, &hosts); |
1319 | mutex_unlock(&list_lock); | |
1320 | ||
e55222ef GL |
1321 | scan_add_host(ici); |
1322 | ||
1323 | return 0; | |
979ea1dd GL |
1324 | |
1325 | edevreg: | |
1326 | mutex_unlock(&list_lock); | |
1327 | return ret; | |
e55222ef GL |
1328 | } |
1329 | EXPORT_SYMBOL(soc_camera_host_register); | |
1330 | ||
1331 | /* Unregister all clients! */ | |
1332 | void soc_camera_host_unregister(struct soc_camera_host *ici) | |
1333 | { | |
1334 | struct soc_camera_device *icd; | |
1335 | ||
1336 | mutex_lock(&list_lock); | |
1337 | ||
1338 | list_del(&ici->list); | |
1339 | ||
1340 | list_for_each_entry(icd, &devices, list) { | |
979ea1dd | 1341 | if (icd->iface == ici->nr) { |
64ff9ba5 | 1342 | void *pdata = icd->dev.platform_data; |
40e2e092 | 1343 | /* The bus->remove will be called */ |
e55222ef | 1344 | device_unregister(&icd->dev); |
76823b79 GL |
1345 | /* |
1346 | * Not before device_unregister(), .remove | |
1347 | * needs parent to call ici->ops->remove(). | |
1348 | * If the host module is loaded again, device_register() | |
1349 | * would complain "already initialised," since 2.6.32 | |
1350 | * this is also needed to prevent use-after-free of the | |
1351 | * device private data. | |
1352 | */ | |
1353 | memset(&icd->dev, 0, sizeof(icd->dev)); | |
64ff9ba5 | 1354 | soc_camera_device_init(&icd->dev, pdata); |
e55222ef GL |
1355 | } |
1356 | } | |
1357 | ||
1358 | mutex_unlock(&list_lock); | |
1359 | ||
979ea1dd | 1360 | v4l2_device_unregister(&ici->v4l2_dev); |
e55222ef GL |
1361 | } |
1362 | EXPORT_SYMBOL(soc_camera_host_unregister); | |
1363 | ||
1364 | /* Image capture device */ | |
40e2e092 | 1365 | static int soc_camera_device_register(struct soc_camera_device *icd) |
e55222ef GL |
1366 | { |
1367 | struct soc_camera_device *ix; | |
1368 | int num = -1, i; | |
1369 | ||
e55222ef GL |
1370 | for (i = 0; i < 256 && num < 0; i++) { |
1371 | num = i; | |
40e2e092 | 1372 | /* Check if this index is available on this interface */ |
e55222ef GL |
1373 | list_for_each_entry(ix, &devices, list) { |
1374 | if (ix->iface == icd->iface && ix->devnum == i) { | |
1375 | num = -1; | |
1376 | break; | |
1377 | } | |
1378 | } | |
1379 | } | |
1380 | ||
1381 | if (num < 0) | |
5d28d525 GL |
1382 | /* |
1383 | * ok, we have 256 cameras on this host... | |
1384 | * man, stay reasonable... | |
1385 | */ | |
e55222ef GL |
1386 | return -ENOMEM; |
1387 | ||
64ff9ba5 | 1388 | icd->devnum = num; |
64f5905e GL |
1389 | icd->use_count = 0; |
1390 | icd->host_priv = NULL; | |
1c3bb743 | 1391 | mutex_init(&icd->video_lock); |
e55222ef | 1392 | |
40e2e092 GL |
1393 | list_add_tail(&icd->list, &devices); |
1394 | ||
1395 | return 0; | |
e55222ef | 1396 | } |
e55222ef | 1397 | |
40e2e092 | 1398 | static void soc_camera_device_unregister(struct soc_camera_device *icd) |
e55222ef | 1399 | { |
e55222ef | 1400 | list_del(&icd->list); |
e55222ef | 1401 | } |
e55222ef | 1402 | |
a399810c HV |
1403 | static const struct v4l2_ioctl_ops soc_camera_ioctl_ops = { |
1404 | .vidioc_querycap = soc_camera_querycap, | |
1405 | .vidioc_g_fmt_vid_cap = soc_camera_g_fmt_vid_cap, | |
1406 | .vidioc_enum_fmt_vid_cap = soc_camera_enum_fmt_vid_cap, | |
1407 | .vidioc_s_fmt_vid_cap = soc_camera_s_fmt_vid_cap, | |
1408 | .vidioc_enum_input = soc_camera_enum_input, | |
1409 | .vidioc_g_input = soc_camera_g_input, | |
1410 | .vidioc_s_input = soc_camera_s_input, | |
1411 | .vidioc_s_std = soc_camera_s_std, | |
ed5b65dc | 1412 | .vidioc_enum_framesizes = soc_camera_enum_fsizes, |
a399810c HV |
1413 | .vidioc_reqbufs = soc_camera_reqbufs, |
1414 | .vidioc_try_fmt_vid_cap = soc_camera_try_fmt_vid_cap, | |
1415 | .vidioc_querybuf = soc_camera_querybuf, | |
1416 | .vidioc_qbuf = soc_camera_qbuf, | |
1417 | .vidioc_dqbuf = soc_camera_dqbuf, | |
1418 | .vidioc_streamon = soc_camera_streamon, | |
1419 | .vidioc_streamoff = soc_camera_streamoff, | |
1420 | .vidioc_queryctrl = soc_camera_queryctrl, | |
1421 | .vidioc_g_ctrl = soc_camera_g_ctrl, | |
1422 | .vidioc_s_ctrl = soc_camera_s_ctrl, | |
1423 | .vidioc_cropcap = soc_camera_cropcap, | |
1424 | .vidioc_g_crop = soc_camera_g_crop, | |
1425 | .vidioc_s_crop = soc_camera_s_crop, | |
c9f6ef69 GL |
1426 | .vidioc_g_parm = soc_camera_g_parm, |
1427 | .vidioc_s_parm = soc_camera_s_parm, | |
a399810c HV |
1428 | .vidioc_g_chip_ident = soc_camera_g_chip_ident, |
1429 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
1430 | .vidioc_g_register = soc_camera_g_register, | |
1431 | .vidioc_s_register = soc_camera_s_register, | |
1432 | #endif | |
1433 | }; | |
1434 | ||
40e2e092 | 1435 | static int video_dev_create(struct soc_camera_device *icd) |
e55222ef GL |
1436 | { |
1437 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
40e2e092 | 1438 | struct video_device *vdev = video_device_alloc(); |
e55222ef | 1439 | |
e55222ef | 1440 | if (!vdev) |
40e2e092 | 1441 | return -ENOMEM; |
e55222ef GL |
1442 | |
1443 | strlcpy(vdev->name, ici->drv_name, sizeof(vdev->name)); | |
1c3bb743 | 1444 | |
5e85e732 | 1445 | vdev->parent = &icd->dev; |
e55222ef GL |
1446 | vdev->current_norm = V4L2_STD_UNKNOWN; |
1447 | vdev->fops = &soc_camera_fops; | |
a399810c | 1448 | vdev->ioctl_ops = &soc_camera_ioctl_ops; |
e55222ef | 1449 | vdev->release = video_device_release; |
40e2e092 | 1450 | vdev->tvnorms = V4L2_STD_UNKNOWN; |
e55222ef | 1451 | |
e55222ef GL |
1452 | icd->vdev = vdev; |
1453 | ||
1454 | return 0; | |
40e2e092 | 1455 | } |
e55222ef | 1456 | |
40e2e092 | 1457 | /* |
979ea1dd | 1458 | * Called from soc_camera_probe() above (with .video_lock held???) |
40e2e092 | 1459 | */ |
979ea1dd | 1460 | static int soc_camera_video_start(struct soc_camera_device *icd) |
40e2e092 | 1461 | { |
4f9fb5ed | 1462 | struct device_type *type = icd->vdev->dev.type; |
979ea1dd | 1463 | int ret; |
40e2e092 GL |
1464 | |
1465 | if (!icd->dev.parent) | |
1466 | return -ENODEV; | |
1467 | ||
1468 | if (!icd->ops || | |
40e2e092 GL |
1469 | !icd->ops->query_bus_param || |
1470 | !icd->ops->set_bus_param) | |
1471 | return -EINVAL; | |
1472 | ||
46b21094 | 1473 | ret = video_register_device(icd->vdev, VFL_TYPE_GRABBER, -1); |
979ea1dd GL |
1474 | if (ret < 0) { |
1475 | dev_err(&icd->dev, "video_register_device failed: %d\n", ret); | |
1476 | return ret; | |
1477 | } | |
40e2e092 | 1478 | |
4f9fb5ed MCC |
1479 | /* Restore device type, possibly set by the subdevice driver */ |
1480 | icd->vdev->dev.type = type; | |
1481 | ||
979ea1dd | 1482 | return 0; |
e55222ef | 1483 | } |
e55222ef | 1484 | |
40e2e092 | 1485 | static int __devinit soc_camera_pdrv_probe(struct platform_device *pdev) |
0fd327bd | 1486 | { |
40e2e092 GL |
1487 | struct soc_camera_link *icl = pdev->dev.platform_data; |
1488 | struct soc_camera_device *icd; | |
c41debaf | 1489 | int ret; |
0fd327bd | 1490 | |
40e2e092 GL |
1491 | if (!icl) |
1492 | return -EINVAL; | |
0fd327bd | 1493 | |
40e2e092 GL |
1494 | icd = kzalloc(sizeof(*icd), GFP_KERNEL); |
1495 | if (!icd) | |
1496 | return -ENOMEM; | |
0fd327bd | 1497 | |
40e2e092 | 1498 | icd->iface = icl->bus_id; |
979ea1dd | 1499 | icd->pdev = &pdev->dev; |
40e2e092 | 1500 | platform_set_drvdata(pdev, icd); |
0fd327bd | 1501 | |
40e2e092 GL |
1502 | ret = soc_camera_device_register(icd); |
1503 | if (ret < 0) | |
1504 | goto escdevreg; | |
0fd327bd | 1505 | |
64ff9ba5 GL |
1506 | soc_camera_device_init(&icd->dev, icl); |
1507 | ||
6a6c8786 GL |
1508 | icd->user_width = DEFAULT_WIDTH; |
1509 | icd->user_height = DEFAULT_HEIGHT; | |
1510 | ||
40e2e092 | 1511 | return 0; |
0fd327bd | 1512 | |
40e2e092 GL |
1513 | escdevreg: |
1514 | kfree(icd); | |
0fd327bd | 1515 | |
40e2e092 | 1516 | return ret; |
c41debaf | 1517 | } |
0fd327bd | 1518 | |
5d28d525 GL |
1519 | /* |
1520 | * Only called on rmmod for each platform device, since they are not | |
40e2e092 | 1521 | * hot-pluggable. Now we know, that all our users - hosts and devices have |
5d28d525 GL |
1522 | * been unloaded already |
1523 | */ | |
40e2e092 | 1524 | static int __devexit soc_camera_pdrv_remove(struct platform_device *pdev) |
c41debaf | 1525 | { |
40e2e092 | 1526 | struct soc_camera_device *icd = platform_get_drvdata(pdev); |
c41debaf | 1527 | |
40e2e092 | 1528 | if (!icd) |
c41debaf GL |
1529 | return -EINVAL; |
1530 | ||
40e2e092 | 1531 | soc_camera_device_unregister(icd); |
c41debaf | 1532 | |
40e2e092 | 1533 | kfree(icd); |
c41debaf | 1534 | |
0fd327bd GL |
1535 | return 0; |
1536 | } | |
1537 | ||
1538 | static struct platform_driver __refdata soc_camera_pdrv = { | |
40e2e092 GL |
1539 | .remove = __devexit_p(soc_camera_pdrv_remove), |
1540 | .driver = { | |
1541 | .name = "soc-camera-pdrv", | |
1542 | .owner = THIS_MODULE, | |
0fd327bd GL |
1543 | }, |
1544 | }; | |
1545 | ||
e55222ef GL |
1546 | static int __init soc_camera_init(void) |
1547 | { | |
1548 | int ret = bus_register(&soc_camera_bus_type); | |
1549 | if (ret) | |
1550 | return ret; | |
1551 | ret = driver_register(&ic_drv); | |
1552 | if (ret) | |
1553 | goto edrvr; | |
e55222ef | 1554 | |
40e2e092 | 1555 | ret = platform_driver_probe(&soc_camera_pdrv, soc_camera_pdrv_probe); |
0fd327bd GL |
1556 | if (ret) |
1557 | goto epdr; | |
1558 | ||
e55222ef GL |
1559 | return 0; |
1560 | ||
0fd327bd GL |
1561 | epdr: |
1562 | driver_unregister(&ic_drv); | |
e55222ef GL |
1563 | edrvr: |
1564 | bus_unregister(&soc_camera_bus_type); | |
1565 | return ret; | |
1566 | } | |
1567 | ||
1568 | static void __exit soc_camera_exit(void) | |
1569 | { | |
0fd327bd | 1570 | platform_driver_unregister(&soc_camera_pdrv); |
e55222ef GL |
1571 | driver_unregister(&ic_drv); |
1572 | bus_unregister(&soc_camera_bus_type); | |
1573 | } | |
1574 | ||
1575 | module_init(soc_camera_init); | |
1576 | module_exit(soc_camera_exit); | |
1577 | ||
1578 | MODULE_DESCRIPTION("Image capture bus driver"); | |
1579 | MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>"); | |
1580 | MODULE_LICENSE("GPL"); | |
0fd327bd | 1581 | MODULE_ALIAS("platform:soc-camera-pdrv"); |