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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 | ||
aee5c2f1 GL |
44 | #define is_streaming(ici, icd) \ |
45 | (((ici)->ops->init_videobuf) ? \ | |
46 | (icd)->vb_vidq.streaming : \ | |
47 | vb2_is_streaming(&(icd)->vb2_vidq)) | |
48 | ||
e55222ef GL |
49 | static LIST_HEAD(hosts); |
50 | static LIST_HEAD(devices); | |
40e2e092 | 51 | static DEFINE_MUTEX(list_lock); /* Protects the list of hosts */ |
e55222ef | 52 | |
96e442c1 AP |
53 | static int soc_camera_power_set(struct soc_camera_device *icd, |
54 | struct soc_camera_link *icl, | |
55 | int power_on) | |
56 | { | |
57 | int ret; | |
58 | ||
59 | if (power_on) { | |
60 | ret = regulator_bulk_enable(icl->num_regulators, | |
61 | icl->regulators); | |
62 | if (ret < 0) { | |
63 | dev_err(&icd->dev, "Cannot enable regulators\n"); | |
64 | return ret; | |
65 | } | |
66 | ||
67 | if (icl->power) | |
68 | ret = icl->power(icd->pdev, power_on); | |
69 | if (ret < 0) { | |
70 | dev_err(&icd->dev, | |
71 | "Platform failed to power-on the camera.\n"); | |
72 | ||
73 | regulator_bulk_disable(icl->num_regulators, | |
74 | icl->regulators); | |
75 | return ret; | |
76 | } | |
77 | } else { | |
78 | ret = 0; | |
79 | if (icl->power) | |
80 | ret = icl->power(icd->pdev, 0); | |
81 | if (ret < 0) { | |
82 | dev_err(&icd->dev, | |
83 | "Platform failed to power-off the camera.\n"); | |
84 | return ret; | |
85 | } | |
86 | ||
87 | ret = regulator_bulk_disable(icl->num_regulators, | |
88 | icl->regulators); | |
89 | if (ret < 0) { | |
90 | dev_err(&icd->dev, "Cannot disable regulators\n"); | |
91 | return ret; | |
92 | } | |
93 | } | |
94 | ||
95 | return 0; | |
96 | } | |
97 | ||
c2786ad2 GL |
98 | const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc( |
99 | struct soc_camera_device *icd, unsigned int fourcc) | |
100 | { | |
101 | unsigned int i; | |
102 | ||
103 | for (i = 0; i < icd->num_user_formats; i++) | |
104 | if (icd->user_formats[i].host_fmt->fourcc == fourcc) | |
105 | return icd->user_formats + i; | |
106 | return NULL; | |
107 | } | |
108 | EXPORT_SYMBOL(soc_camera_xlate_by_fourcc); | |
109 | ||
bd73b36f GL |
110 | /** |
111 | * soc_camera_apply_sensor_flags() - apply platform SOCAM_SENSOR_INVERT_* flags | |
112 | * @icl: camera platform parameters | |
113 | * @flags: flags to be inverted according to platform configuration | |
114 | * @return: resulting flags | |
115 | */ | |
116 | unsigned long soc_camera_apply_sensor_flags(struct soc_camera_link *icl, | |
117 | unsigned long flags) | |
118 | { | |
119 | unsigned long f; | |
120 | ||
121 | /* If only one of the two polarities is supported, switch to the opposite */ | |
122 | if (icl->flags & SOCAM_SENSOR_INVERT_HSYNC) { | |
123 | f = flags & (SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW); | |
124 | if (f == SOCAM_HSYNC_ACTIVE_HIGH || f == SOCAM_HSYNC_ACTIVE_LOW) | |
125 | flags ^= SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW; | |
126 | } | |
127 | ||
128 | if (icl->flags & SOCAM_SENSOR_INVERT_VSYNC) { | |
129 | f = flags & (SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW); | |
130 | if (f == SOCAM_VSYNC_ACTIVE_HIGH || f == SOCAM_VSYNC_ACTIVE_LOW) | |
131 | flags ^= SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW; | |
132 | } | |
133 | ||
134 | if (icl->flags & SOCAM_SENSOR_INVERT_PCLK) { | |
135 | f = flags & (SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING); | |
136 | if (f == SOCAM_PCLK_SAMPLE_RISING || f == SOCAM_PCLK_SAMPLE_FALLING) | |
137 | flags ^= SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING; | |
138 | } | |
139 | ||
140 | return flags; | |
141 | } | |
142 | EXPORT_SYMBOL(soc_camera_apply_sensor_flags); | |
143 | ||
dca6b6d1 SA |
144 | #define pixfmtstr(x) (x) & 0xff, ((x) >> 8) & 0xff, ((x) >> 16) & 0xff, \ |
145 | ((x) >> 24) & 0xff | |
146 | ||
147 | static int soc_camera_try_fmt(struct soc_camera_device *icd, | |
148 | struct v4l2_format *f) | |
149 | { | |
150 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
151 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
152 | int ret; | |
153 | ||
154 | dev_dbg(&icd->dev, "TRY_FMT(%c%c%c%c, %ux%u)\n", | |
155 | pixfmtstr(pix->pixelformat), pix->width, pix->height); | |
156 | ||
157 | pix->bytesperline = 0; | |
158 | pix->sizeimage = 0; | |
159 | ||
160 | ret = ici->ops->try_fmt(icd, f); | |
161 | if (ret < 0) | |
162 | return ret; | |
163 | ||
164 | if (!pix->sizeimage) { | |
165 | if (!pix->bytesperline) { | |
166 | const struct soc_camera_format_xlate *xlate; | |
167 | ||
168 | xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat); | |
169 | if (!xlate) | |
170 | return -EINVAL; | |
171 | ||
172 | ret = soc_mbus_bytes_per_line(pix->width, | |
173 | xlate->host_fmt); | |
174 | if (ret > 0) | |
175 | pix->bytesperline = ret; | |
176 | } | |
177 | if (pix->bytesperline) | |
178 | pix->sizeimage = pix->bytesperline * pix->height; | |
179 | } | |
180 | ||
181 | return 0; | |
182 | } | |
183 | ||
72937890 | 184 | static int soc_camera_try_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 185 | struct v4l2_format *f) |
e55222ef | 186 | { |
57bee29d | 187 | struct soc_camera_device *icd = file->private_data; |
e55222ef GL |
188 | |
189 | WARN_ON(priv != file->private_data); | |
190 | ||
d366d4a0 GL |
191 | /* Only single-plane capture is supported so far */ |
192 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
193 | return -EINVAL; | |
194 | ||
ad5f2e85 | 195 | /* limit format to hardware capabilities */ |
dca6b6d1 | 196 | return soc_camera_try_fmt(icd, f); |
e55222ef GL |
197 | } |
198 | ||
199 | static int soc_camera_enum_input(struct file *file, void *priv, | |
200 | struct v4l2_input *inp) | |
201 | { | |
57bee29d | 202 | struct soc_camera_device *icd = file->private_data; |
34d359db KM |
203 | int ret = 0; |
204 | ||
e55222ef GL |
205 | if (inp->index != 0) |
206 | return -EINVAL; | |
207 | ||
34d359db KM |
208 | if (icd->ops->enum_input) |
209 | ret = icd->ops->enum_input(icd, inp); | |
210 | else { | |
211 | /* default is camera */ | |
212 | inp->type = V4L2_INPUT_TYPE_CAMERA; | |
213 | inp->std = V4L2_STD_UNKNOWN; | |
214 | strcpy(inp->name, "Camera"); | |
215 | } | |
e55222ef | 216 | |
34d359db | 217 | return ret; |
e55222ef GL |
218 | } |
219 | ||
220 | static int soc_camera_g_input(struct file *file, void *priv, unsigned int *i) | |
221 | { | |
222 | *i = 0; | |
223 | ||
224 | return 0; | |
225 | } | |
226 | ||
227 | static int soc_camera_s_input(struct file *file, void *priv, unsigned int i) | |
228 | { | |
229 | if (i > 0) | |
230 | return -EINVAL; | |
231 | ||
232 | return 0; | |
233 | } | |
234 | ||
235 | static int soc_camera_s_std(struct file *file, void *priv, v4l2_std_id *a) | |
236 | { | |
57bee29d | 237 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 238 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
513791ab | 239 | |
c9c1f1c0 | 240 | return v4l2_subdev_call(sd, core, s_std, *a); |
e55222ef GL |
241 | } |
242 | ||
ed5b65dc QX |
243 | static int soc_camera_enum_fsizes(struct file *file, void *fh, |
244 | struct v4l2_frmsizeenum *fsize) | |
245 | { | |
246 | struct soc_camera_device *icd = file->private_data; | |
247 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
248 | ||
249 | return ici->ops->enum_fsizes(icd, fsize); | |
250 | } | |
251 | ||
e55222ef GL |
252 | static int soc_camera_reqbufs(struct file *file, void *priv, |
253 | struct v4l2_requestbuffers *p) | |
254 | { | |
255 | int ret; | |
57bee29d | 256 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 257 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
258 | |
259 | WARN_ON(priv != file->private_data); | |
260 | ||
57bee29d GL |
261 | if (icd->streamer && icd->streamer != file) |
262 | return -EBUSY; | |
263 | ||
592c2aba GL |
264 | if (ici->ops->init_videobuf) { |
265 | ret = videobuf_reqbufs(&icd->vb_vidq, p); | |
266 | if (ret < 0) | |
267 | return ret; | |
268 | ||
269 | ret = ici->ops->reqbufs(icd, p); | |
270 | } else { | |
271 | ret = vb2_reqbufs(&icd->vb2_vidq, p); | |
272 | } | |
e55222ef | 273 | |
57bee29d GL |
274 | if (!ret && !icd->streamer) |
275 | icd->streamer = file; | |
276 | ||
277 | return ret; | |
e55222ef GL |
278 | } |
279 | ||
280 | static int soc_camera_querybuf(struct file *file, void *priv, | |
281 | struct v4l2_buffer *p) | |
282 | { | |
57bee29d | 283 | struct soc_camera_device *icd = file->private_data; |
592c2aba | 284 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
285 | |
286 | WARN_ON(priv != file->private_data); | |
287 | ||
592c2aba GL |
288 | if (ici->ops->init_videobuf) |
289 | return videobuf_querybuf(&icd->vb_vidq, p); | |
290 | else | |
291 | return vb2_querybuf(&icd->vb2_vidq, p); | |
e55222ef GL |
292 | } |
293 | ||
294 | static int soc_camera_qbuf(struct file *file, void *priv, | |
295 | struct v4l2_buffer *p) | |
296 | { | |
57bee29d | 297 | struct soc_camera_device *icd = file->private_data; |
592c2aba | 298 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
299 | |
300 | WARN_ON(priv != file->private_data); | |
301 | ||
57bee29d GL |
302 | if (icd->streamer != file) |
303 | return -EBUSY; | |
304 | ||
592c2aba GL |
305 | if (ici->ops->init_videobuf) |
306 | return videobuf_qbuf(&icd->vb_vidq, p); | |
307 | else | |
308 | return vb2_qbuf(&icd->vb2_vidq, p); | |
e55222ef GL |
309 | } |
310 | ||
311 | static int soc_camera_dqbuf(struct file *file, void *priv, | |
312 | struct v4l2_buffer *p) | |
313 | { | |
57bee29d | 314 | struct soc_camera_device *icd = file->private_data; |
592c2aba | 315 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
316 | |
317 | WARN_ON(priv != file->private_data); | |
318 | ||
57bee29d GL |
319 | if (icd->streamer != file) |
320 | return -EBUSY; | |
321 | ||
592c2aba GL |
322 | if (ici->ops->init_videobuf) |
323 | return videobuf_dqbuf(&icd->vb_vidq, p, file->f_flags & O_NONBLOCK); | |
324 | else | |
325 | return vb2_dqbuf(&icd->vb2_vidq, p, file->f_flags & O_NONBLOCK); | |
e55222ef GL |
326 | } |
327 | ||
40e2e092 | 328 | /* Always entered with .video_lock held */ |
c2786ad2 GL |
329 | static int soc_camera_init_user_formats(struct soc_camera_device *icd) |
330 | { | |
760697be | 331 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
c2786ad2 | 332 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
3805f201 HV |
333 | unsigned int i, fmts = 0, raw_fmts = 0; |
334 | int ret; | |
760697be GL |
335 | enum v4l2_mbus_pixelcode code; |
336 | ||
337 | while (!v4l2_subdev_call(sd, video, enum_mbus_fmt, raw_fmts, &code)) | |
338 | raw_fmts++; | |
c2786ad2 GL |
339 | |
340 | if (!ici->ops->get_formats) | |
341 | /* | |
342 | * Fallback mode - the host will have to serve all | |
343 | * sensor-provided formats one-to-one to the user | |
344 | */ | |
760697be | 345 | fmts = raw_fmts; |
c2786ad2 GL |
346 | else |
347 | /* | |
348 | * First pass - only count formats this host-sensor | |
349 | * configuration can provide | |
350 | */ | |
760697be | 351 | for (i = 0; i < raw_fmts; i++) { |
fa48984e GL |
352 | ret = ici->ops->get_formats(icd, i, NULL); |
353 | if (ret < 0) | |
354 | return ret; | |
355 | fmts += ret; | |
356 | } | |
c2786ad2 GL |
357 | |
358 | if (!fmts) | |
359 | return -ENXIO; | |
360 | ||
361 | icd->user_formats = | |
362 | vmalloc(fmts * sizeof(struct soc_camera_format_xlate)); | |
363 | if (!icd->user_formats) | |
364 | return -ENOMEM; | |
365 | ||
c2786ad2 GL |
366 | dev_dbg(&icd->dev, "Found %d supported formats.\n", fmts); |
367 | ||
368 | /* Second pass - actually fill data formats */ | |
14df2cce | 369 | fmts = 0; |
760697be | 370 | for (i = 0; i < raw_fmts; i++) |
c2786ad2 | 371 | if (!ici->ops->get_formats) { |
760697be | 372 | v4l2_subdev_call(sd, video, enum_mbus_fmt, i, &code); |
d2dcad49 | 373 | icd->user_formats[fmts].host_fmt = |
760697be | 374 | soc_mbus_get_fmtdesc(code); |
d2dcad49 GL |
375 | if (icd->user_formats[fmts].host_fmt) |
376 | icd->user_formats[fmts++].code = code; | |
c2786ad2 | 377 | } else { |
fa48984e GL |
378 | ret = ici->ops->get_formats(icd, i, |
379 | &icd->user_formats[fmts]); | |
380 | if (ret < 0) | |
381 | goto egfmt; | |
382 | fmts += ret; | |
c2786ad2 GL |
383 | } |
384 | ||
d2dcad49 | 385 | icd->num_user_formats = fmts; |
760697be | 386 | icd->current_fmt = &icd->user_formats[0]; |
c2786ad2 GL |
387 | |
388 | return 0; | |
fa48984e GL |
389 | |
390 | egfmt: | |
fa48984e GL |
391 | vfree(icd->user_formats); |
392 | return ret; | |
c2786ad2 GL |
393 | } |
394 | ||
40e2e092 | 395 | /* Always entered with .video_lock held */ |
c2786ad2 GL |
396 | static void soc_camera_free_user_formats(struct soc_camera_device *icd) |
397 | { | |
fa48984e GL |
398 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
399 | ||
400 | if (ici->ops->put_formats) | |
401 | ici->ops->put_formats(icd); | |
40e2e092 | 402 | icd->current_fmt = NULL; |
fa48984e | 403 | icd->num_user_formats = 0; |
c2786ad2 | 404 | vfree(icd->user_formats); |
40e2e092 | 405 | icd->user_formats = NULL; |
c2786ad2 GL |
406 | } |
407 | ||
760697be | 408 | /* Called with .vb_lock held, or from the first open(2), see comment there */ |
57bee29d | 409 | static int soc_camera_set_fmt(struct soc_camera_device *icd, |
df2ed070 GL |
410 | struct v4l2_format *f) |
411 | { | |
df2ed070 GL |
412 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
413 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
414 | int ret; | |
415 | ||
6a6c8786 GL |
416 | dev_dbg(&icd->dev, "S_FMT(%c%c%c%c, %ux%u)\n", |
417 | pixfmtstr(pix->pixelformat), pix->width, pix->height); | |
418 | ||
df2ed070 | 419 | /* We always call try_fmt() before set_fmt() or set_crop() */ |
dca6b6d1 | 420 | ret = soc_camera_try_fmt(icd, f); |
df2ed070 GL |
421 | if (ret < 0) |
422 | return ret; | |
423 | ||
424 | ret = ici->ops->set_fmt(icd, f); | |
425 | if (ret < 0) { | |
426 | return ret; | |
427 | } else if (!icd->current_fmt || | |
760697be | 428 | icd->current_fmt->host_fmt->fourcc != pix->pixelformat) { |
2aa58db4 | 429 | dev_err(&icd->dev, |
df2ed070 GL |
430 | "Host driver hasn't set up current format correctly!\n"); |
431 | return -EINVAL; | |
432 | } | |
433 | ||
6a6c8786 GL |
434 | icd->user_width = pix->width; |
435 | icd->user_height = pix->height; | |
0e4c180d SA |
436 | icd->bytesperline = pix->bytesperline; |
437 | icd->sizeimage = pix->sizeimage; | |
760697be | 438 | icd->colorspace = pix->colorspace; |
592c2aba GL |
439 | icd->field = pix->field; |
440 | if (ici->ops->init_videobuf) | |
441 | icd->vb_vidq.field = pix->field; | |
025c18a1 | 442 | |
df2ed070 | 443 | dev_dbg(&icd->dev, "set width: %d height: %d\n", |
6a6c8786 | 444 | icd->user_width, icd->user_height); |
df2ed070 GL |
445 | |
446 | /* set physical bus parameters */ | |
447 | return ici->ops->set_bus_param(icd, pix->pixelformat); | |
448 | } | |
449 | ||
bec43661 | 450 | static int soc_camera_open(struct file *file) |
e55222ef | 451 | { |
979ea1dd | 452 | struct video_device *vdev = video_devdata(file); |
96c75399 GL |
453 | struct soc_camera_device *icd = container_of(vdev->parent, |
454 | struct soc_camera_device, | |
455 | dev); | |
979ea1dd | 456 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
9dc4e48f | 457 | struct soc_camera_host *ici; |
e55222ef GL |
458 | int ret; |
459 | ||
40e2e092 GL |
460 | if (!icd->ops) |
461 | /* No device driver attached */ | |
462 | return -ENODEV; | |
463 | ||
9dc4e48f | 464 | ici = to_soc_camera_host(icd->dev.parent); |
e55222ef | 465 | |
b8d9904c | 466 | if (!try_module_get(ici->ops->owner)) { |
e55222ef | 467 | dev_err(&icd->dev, "Couldn't lock capture bus driver.\n"); |
57bee29d | 468 | return -EINVAL; |
e55222ef GL |
469 | } |
470 | ||
1a0063a9 GL |
471 | icd->use_count++; |
472 | ||
9dc4e48f GL |
473 | /* Now we really have to activate the camera */ |
474 | if (icd->use_count == 1) { | |
025c18a1 | 475 | /* Restore parameters before the last close() per V4L2 API */ |
df2ed070 GL |
476 | struct v4l2_format f = { |
477 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
478 | .fmt.pix = { | |
6a6c8786 GL |
479 | .width = icd->user_width, |
480 | .height = icd->user_height, | |
025c18a1 | 481 | .field = icd->field, |
760697be GL |
482 | .colorspace = icd->colorspace, |
483 | .pixelformat = | |
484 | icd->current_fmt->host_fmt->fourcc, | |
df2ed070 GL |
485 | }, |
486 | }; | |
487 | ||
96e442c1 AP |
488 | ret = soc_camera_power_set(icd, icl, 1); |
489 | if (ret < 0) | |
490 | goto epower; | |
979ea1dd GL |
491 | |
492 | /* The camera could have been already on, try to reset */ | |
493 | if (icl->reset) | |
494 | icl->reset(icd->pdev); | |
495 | ||
b8d9904c | 496 | ret = ici->ops->add(icd); |
9dc4e48f GL |
497 | if (ret < 0) { |
498 | dev_err(&icd->dev, "Couldn't activate the camera: %d\n", ret); | |
9dc4e48f GL |
499 | goto eiciadd; |
500 | } | |
df2ed070 | 501 | |
4f9fb5ed MCC |
502 | pm_runtime_enable(&icd->vdev->dev); |
503 | ret = pm_runtime_resume(&icd->vdev->dev); | |
504 | if (ret < 0 && ret != -ENOSYS) | |
505 | goto eresume; | |
506 | ||
760697be GL |
507 | /* |
508 | * Try to configure with default parameters. Notice: this is the | |
509 | * very first open, so, we cannot race against other calls, | |
510 | * apart from someone else calling open() simultaneously, but | |
511 | * .video_lock is protecting us against it. | |
512 | */ | |
57bee29d | 513 | ret = soc_camera_set_fmt(icd, &f); |
df2ed070 GL |
514 | if (ret < 0) |
515 | goto esfmt; | |
24d8c029 | 516 | |
592c2aba GL |
517 | if (ici->ops->init_videobuf) { |
518 | ici->ops->init_videobuf(&icd->vb_vidq, icd); | |
519 | } else { | |
520 | ret = ici->ops->init_videobuf2(&icd->vb2_vidq, icd); | |
521 | if (ret < 0) | |
522 | goto einitvb; | |
523 | } | |
9dc4e48f GL |
524 | } |
525 | ||
57bee29d | 526 | file->private_data = icd; |
e55222ef GL |
527 | dev_dbg(&icd->dev, "camera device open\n"); |
528 | ||
e55222ef GL |
529 | return 0; |
530 | ||
df2ed070 | 531 | /* |
4f9fb5ed | 532 | * First four errors are entered with the .video_lock held |
df2ed070 GL |
533 | * and use_count == 1 |
534 | */ | |
592c2aba | 535 | einitvb: |
df2ed070 | 536 | esfmt: |
4f9fb5ed MCC |
537 | pm_runtime_disable(&icd->vdev->dev); |
538 | eresume: | |
df2ed070 | 539 | ici->ops->remove(icd); |
9dc4e48f | 540 | eiciadd: |
96e442c1 | 541 | soc_camera_power_set(icd, icl, 0); |
979ea1dd | 542 | epower: |
c2786ad2 | 543 | icd->use_count--; |
b8d9904c | 544 | module_put(ici->ops->owner); |
57bee29d | 545 | |
e55222ef GL |
546 | return ret; |
547 | } | |
548 | ||
bec43661 | 549 | static int soc_camera_close(struct file *file) |
e55222ef | 550 | { |
57bee29d | 551 | struct soc_camera_device *icd = file->private_data; |
e55222ef | 552 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef | 553 | |
9dc4e48f | 554 | icd->use_count--; |
40e2e092 | 555 | if (!icd->use_count) { |
979ea1dd GL |
556 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
557 | ||
4f9fb5ed MCC |
558 | pm_runtime_suspend(&icd->vdev->dev); |
559 | pm_runtime_disable(&icd->vdev->dev); | |
560 | ||
b8d9904c | 561 | ici->ops->remove(icd); |
592c2aba GL |
562 | if (ici->ops->init_videobuf2) |
563 | vb2_queue_release(&icd->vb2_vidq); | |
4f9fb5ed | 564 | |
96e442c1 | 565 | soc_camera_power_set(icd, icl, 0); |
40e2e092 | 566 | } |
025c18a1 | 567 | |
57bee29d GL |
568 | if (icd->streamer == file) |
569 | icd->streamer = NULL; | |
570 | ||
b8d9904c | 571 | module_put(ici->ops->owner); |
9dc4e48f | 572 | |
2aa58db4 | 573 | dev_dbg(&icd->dev, "camera device close\n"); |
e55222ef GL |
574 | |
575 | return 0; | |
576 | } | |
577 | ||
aba360d8 | 578 | static ssize_t soc_camera_read(struct file *file, char __user *buf, |
abe4c471 | 579 | size_t count, loff_t *ppos) |
e55222ef | 580 | { |
57bee29d | 581 | struct soc_camera_device *icd = file->private_data; |
e55222ef GL |
582 | int err = -EINVAL; |
583 | ||
2aa58db4 | 584 | dev_err(&icd->dev, "camera device read not implemented\n"); |
e55222ef GL |
585 | |
586 | return err; | |
587 | } | |
588 | ||
589 | static int soc_camera_mmap(struct file *file, struct vm_area_struct *vma) | |
590 | { | |
57bee29d | 591 | struct soc_camera_device *icd = file->private_data; |
592c2aba | 592 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
593 | int err; |
594 | ||
595 | dev_dbg(&icd->dev, "mmap called, vma=0x%08lx\n", (unsigned long)vma); | |
596 | ||
57bee29d GL |
597 | if (icd->streamer != file) |
598 | return -EBUSY; | |
599 | ||
592c2aba GL |
600 | if (ici->ops->init_videobuf) |
601 | err = videobuf_mmap_mapper(&icd->vb_vidq, vma); | |
602 | else | |
603 | err = vb2_mmap(&icd->vb2_vidq, vma); | |
e55222ef GL |
604 | |
605 | dev_dbg(&icd->dev, "vma start=0x%08lx, size=%ld, ret=%d\n", | |
606 | (unsigned long)vma->vm_start, | |
607 | (unsigned long)vma->vm_end - (unsigned long)vma->vm_start, | |
608 | err); | |
609 | ||
610 | return err; | |
611 | } | |
612 | ||
613 | static unsigned int soc_camera_poll(struct file *file, poll_table *pt) | |
614 | { | |
57bee29d | 615 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 616 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef | 617 | |
57bee29d GL |
618 | if (icd->streamer != file) |
619 | return -EBUSY; | |
620 | ||
592c2aba | 621 | if (ici->ops->init_videobuf && list_empty(&icd->vb_vidq.stream)) { |
e55222ef GL |
622 | dev_err(&icd->dev, "Trying to poll with no queued buffers!\n"); |
623 | return POLLERR; | |
624 | } | |
625 | ||
b8d9904c | 626 | return ici->ops->poll(file, pt); |
e55222ef GL |
627 | } |
628 | ||
592c2aba GL |
629 | void soc_camera_lock(struct vb2_queue *vq) |
630 | { | |
631 | struct soc_camera_device *icd = vb2_get_drv_priv(vq); | |
632 | mutex_lock(&icd->video_lock); | |
633 | } | |
634 | EXPORT_SYMBOL(soc_camera_lock); | |
635 | ||
636 | void soc_camera_unlock(struct vb2_queue *vq) | |
637 | { | |
638 | struct soc_camera_device *icd = vb2_get_drv_priv(vq); | |
639 | mutex_unlock(&icd->video_lock); | |
640 | } | |
641 | EXPORT_SYMBOL(soc_camera_unlock); | |
642 | ||
bec43661 | 643 | static struct v4l2_file_operations soc_camera_fops = { |
e55222ef GL |
644 | .owner = THIS_MODULE, |
645 | .open = soc_camera_open, | |
646 | .release = soc_camera_close, | |
b6a633c1 | 647 | .unlocked_ioctl = video_ioctl2, |
e55222ef GL |
648 | .read = soc_camera_read, |
649 | .mmap = soc_camera_mmap, | |
650 | .poll = soc_camera_poll, | |
e55222ef GL |
651 | }; |
652 | ||
72937890 | 653 | static int soc_camera_s_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 654 | struct v4l2_format *f) |
e55222ef | 655 | { |
57bee29d | 656 | struct soc_camera_device *icd = file->private_data; |
e55222ef | 657 | int ret; |
e55222ef GL |
658 | |
659 | WARN_ON(priv != file->private_data); | |
660 | ||
d366d4a0 GL |
661 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
662 | dev_warn(&icd->dev, "Wrong buf-type %d\n", f->type); | |
663 | return -EINVAL; | |
664 | } | |
665 | ||
57bee29d GL |
666 | if (icd->streamer && icd->streamer != file) |
667 | return -EBUSY; | |
1c3bb743 | 668 | |
aee5c2f1 | 669 | if (is_streaming(to_soc_camera_host(icd->dev.parent), icd)) { |
b897a91a | 670 | dev_err(&icd->dev, "S_FMT denied: queue initialised\n"); |
b6a633c1 | 671 | return -EBUSY; |
1c3bb743 GL |
672 | } |
673 | ||
57bee29d GL |
674 | ret = soc_camera_set_fmt(icd, f); |
675 | ||
676 | if (!ret && !icd->streamer) | |
677 | icd->streamer = file; | |
1c3bb743 | 678 | |
1c3bb743 | 679 | return ret; |
e55222ef GL |
680 | } |
681 | ||
72937890 | 682 | static int soc_camera_enum_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 683 | struct v4l2_fmtdesc *f) |
e55222ef | 684 | { |
57bee29d | 685 | struct soc_camera_device *icd = file->private_data; |
760697be | 686 | const struct soc_mbus_pixelfmt *format; |
e55222ef GL |
687 | |
688 | WARN_ON(priv != file->private_data); | |
689 | ||
c2786ad2 | 690 | if (f->index >= icd->num_user_formats) |
e55222ef GL |
691 | return -EINVAL; |
692 | ||
c2786ad2 | 693 | format = icd->user_formats[f->index].host_fmt; |
e55222ef | 694 | |
760697be GL |
695 | if (format->name) |
696 | strlcpy(f->description, format->name, sizeof(f->description)); | |
e55222ef GL |
697 | f->pixelformat = format->fourcc; |
698 | return 0; | |
699 | } | |
700 | ||
72937890 | 701 | static int soc_camera_g_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 702 | struct v4l2_format *f) |
e55222ef | 703 | { |
57bee29d | 704 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 705 | struct v4l2_pix_format *pix = &f->fmt.pix; |
e55222ef GL |
706 | |
707 | WARN_ON(priv != file->private_data); | |
708 | ||
d366d4a0 GL |
709 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
710 | return -EINVAL; | |
711 | ||
6a6c8786 GL |
712 | pix->width = icd->user_width; |
713 | pix->height = icd->user_height; | |
0e4c180d SA |
714 | pix->bytesperline = icd->bytesperline; |
715 | pix->sizeimage = icd->sizeimage; | |
592c2aba | 716 | pix->field = icd->field; |
760697be | 717 | pix->pixelformat = icd->current_fmt->host_fmt->fourcc; |
760697be | 718 | pix->colorspace = icd->colorspace; |
e55222ef | 719 | dev_dbg(&icd->dev, "current_fmt->fourcc: 0x%08x\n", |
760697be | 720 | icd->current_fmt->host_fmt->fourcc); |
e55222ef GL |
721 | return 0; |
722 | } | |
723 | ||
724 | static int soc_camera_querycap(struct file *file, void *priv, | |
725 | struct v4l2_capability *cap) | |
726 | { | |
57bee29d | 727 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 728 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
729 | |
730 | WARN_ON(priv != file->private_data); | |
731 | ||
732 | strlcpy(cap->driver, ici->drv_name, sizeof(cap->driver)); | |
b8d9904c | 733 | return ici->ops->querycap(ici, cap); |
e55222ef GL |
734 | } |
735 | ||
736 | static int soc_camera_streamon(struct file *file, void *priv, | |
737 | enum v4l2_buf_type i) | |
738 | { | |
57bee29d | 739 | struct soc_camera_device *icd = file->private_data; |
592c2aba | 740 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
c9c1f1c0 | 741 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
1c3bb743 | 742 | int ret; |
e55222ef GL |
743 | |
744 | WARN_ON(priv != file->private_data); | |
745 | ||
e55222ef GL |
746 | if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
747 | return -EINVAL; | |
748 | ||
57bee29d GL |
749 | if (icd->streamer != file) |
750 | return -EBUSY; | |
751 | ||
e55222ef | 752 | /* This calls buf_queue from host driver's videobuf_queue_ops */ |
592c2aba GL |
753 | if (ici->ops->init_videobuf) |
754 | ret = videobuf_streamon(&icd->vb_vidq); | |
755 | else | |
756 | ret = vb2_streamon(&icd->vb2_vidq, i); | |
757 | ||
7fdbd85b AG |
758 | if (!ret) |
759 | v4l2_subdev_call(sd, video, s_stream, 1); | |
1c3bb743 | 760 | |
1c3bb743 | 761 | return ret; |
e55222ef GL |
762 | } |
763 | ||
764 | static int soc_camera_streamoff(struct file *file, void *priv, | |
765 | enum v4l2_buf_type i) | |
766 | { | |
57bee29d | 767 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 768 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
592c2aba | 769 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
770 | |
771 | WARN_ON(priv != file->private_data); | |
772 | ||
e55222ef GL |
773 | if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
774 | return -EINVAL; | |
775 | ||
57bee29d GL |
776 | if (icd->streamer != file) |
777 | return -EBUSY; | |
778 | ||
5d28d525 GL |
779 | /* |
780 | * This calls buf_release from host driver's videobuf_queue_ops for all | |
781 | * remaining buffers. When the last buffer is freed, stop capture | |
782 | */ | |
592c2aba GL |
783 | if (ici->ops->init_videobuf) |
784 | videobuf_streamoff(&icd->vb_vidq); | |
785 | else | |
786 | vb2_streamoff(&icd->vb2_vidq, i); | |
e55222ef | 787 | |
c9c1f1c0 | 788 | v4l2_subdev_call(sd, video, s_stream, 0); |
e55222ef GL |
789 | |
790 | return 0; | |
791 | } | |
792 | ||
793 | static int soc_camera_queryctrl(struct file *file, void *priv, | |
794 | struct v4l2_queryctrl *qc) | |
795 | { | |
57bee29d | 796 | struct soc_camera_device *icd = file->private_data; |
2840d249 | 797 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef GL |
798 | int i; |
799 | ||
800 | WARN_ON(priv != file->private_data); | |
801 | ||
802 | if (!qc->id) | |
803 | return -EINVAL; | |
804 | ||
2840d249 GL |
805 | /* First check host controls */ |
806 | for (i = 0; i < ici->ops->num_controls; i++) | |
807 | if (qc->id == ici->ops->controls[i].id) { | |
808 | memcpy(qc, &(ici->ops->controls[i]), | |
809 | sizeof(*qc)); | |
810 | return 0; | |
811 | } | |
812 | ||
813 | /* Then device controls */ | |
e55222ef GL |
814 | for (i = 0; i < icd->ops->num_controls; i++) |
815 | if (qc->id == icd->ops->controls[i].id) { | |
816 | memcpy(qc, &(icd->ops->controls[i]), | |
817 | sizeof(*qc)); | |
818 | return 0; | |
819 | } | |
820 | ||
821 | return -EINVAL; | |
822 | } | |
823 | ||
824 | static int soc_camera_g_ctrl(struct file *file, void *priv, | |
825 | struct v4l2_control *ctrl) | |
826 | { | |
57bee29d | 827 | struct soc_camera_device *icd = file->private_data; |
979ea1dd | 828 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
c9c1f1c0 | 829 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
2840d249 | 830 | int ret; |
e55222ef GL |
831 | |
832 | WARN_ON(priv != file->private_data); | |
833 | ||
2840d249 GL |
834 | if (ici->ops->get_ctrl) { |
835 | ret = ici->ops->get_ctrl(icd, ctrl); | |
836 | if (ret != -ENOIOCTLCMD) | |
837 | return ret; | |
838 | } | |
839 | ||
c9c1f1c0 | 840 | return v4l2_subdev_call(sd, core, g_ctrl, ctrl); |
e55222ef GL |
841 | } |
842 | ||
843 | static int soc_camera_s_ctrl(struct file *file, void *priv, | |
844 | struct v4l2_control *ctrl) | |
845 | { | |
57bee29d | 846 | struct soc_camera_device *icd = file->private_data; |
979ea1dd | 847 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
c9c1f1c0 | 848 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
2840d249 | 849 | int ret; |
e55222ef GL |
850 | |
851 | WARN_ON(priv != file->private_data); | |
852 | ||
2840d249 GL |
853 | if (ici->ops->set_ctrl) { |
854 | ret = ici->ops->set_ctrl(icd, ctrl); | |
855 | if (ret != -ENOIOCTLCMD) | |
856 | return ret; | |
857 | } | |
858 | ||
c9c1f1c0 | 859 | return v4l2_subdev_call(sd, core, s_ctrl, ctrl); |
e55222ef GL |
860 | } |
861 | ||
862 | static int soc_camera_cropcap(struct file *file, void *fh, | |
863 | struct v4l2_cropcap *a) | |
864 | { | |
57bee29d | 865 | struct soc_camera_device *icd = file->private_data; |
6a6c8786 | 866 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
e55222ef | 867 | |
6a6c8786 | 868 | return ici->ops->cropcap(icd, a); |
e55222ef GL |
869 | } |
870 | ||
871 | static int soc_camera_g_crop(struct file *file, void *fh, | |
872 | struct v4l2_crop *a) | |
873 | { | |
57bee29d | 874 | struct soc_camera_device *icd = file->private_data; |
6a6c8786 GL |
875 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
876 | int ret; | |
e55222ef | 877 | |
6a6c8786 | 878 | ret = ici->ops->get_crop(icd, a); |
e55222ef | 879 | |
6a6c8786 | 880 | return ret; |
e55222ef GL |
881 | } |
882 | ||
68a54f0e GL |
883 | /* |
884 | * According to the V4L2 API, drivers shall not update the struct v4l2_crop | |
885 | * argument with the actual geometry, instead, the user shall use G_CROP to | |
ab56d5eb | 886 | * retrieve it. |
68a54f0e | 887 | */ |
e55222ef GL |
888 | static int soc_camera_s_crop(struct file *file, void *fh, |
889 | struct v4l2_crop *a) | |
890 | { | |
57bee29d | 891 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 892 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
6a6c8786 GL |
893 | struct v4l2_rect *rect = &a->c; |
894 | struct v4l2_crop current_crop; | |
e55222ef GL |
895 | int ret; |
896 | ||
897 | if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
898 | return -EINVAL; | |
899 | ||
6a6c8786 GL |
900 | dev_dbg(&icd->dev, "S_CROP(%ux%u@%u:%u)\n", |
901 | rect->width, rect->height, rect->left, rect->top); | |
902 | ||
6a6c8786 GL |
903 | /* If get_crop fails, we'll let host and / or client drivers decide */ |
904 | ret = ici->ops->get_crop(icd, ¤t_crop); | |
905 | ||
b897a91a | 906 | /* Prohibit window size change with initialised buffers */ |
103754a0 GL |
907 | if (ret < 0) { |
908 | dev_err(&icd->dev, | |
909 | "S_CROP denied: getting current crop failed\n"); | |
aee5c2f1 GL |
910 | } else if ((a->c.width == current_crop.c.width && |
911 | a->c.height == current_crop.c.height) || | |
912 | !is_streaming(ici, icd)) { | |
913 | /* same size or not streaming - use .set_crop() */ | |
914 | ret = ici->ops->set_crop(icd, a); | |
915 | } else if (ici->ops->set_livecrop) { | |
916 | ret = ici->ops->set_livecrop(icd, a); | |
917 | } else { | |
b897a91a GL |
918 | dev_err(&icd->dev, |
919 | "S_CROP denied: queue initialised and sizes differ\n"); | |
920 | ret = -EBUSY; | |
b897a91a GL |
921 | } |
922 | ||
e55222ef GL |
923 | return ret; |
924 | } | |
925 | ||
c9f6ef69 GL |
926 | static int soc_camera_g_parm(struct file *file, void *fh, |
927 | struct v4l2_streamparm *a) | |
928 | { | |
57bee29d | 929 | struct soc_camera_device *icd = file->private_data; |
c9f6ef69 GL |
930 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
931 | ||
932 | if (ici->ops->get_parm) | |
933 | return ici->ops->get_parm(icd, a); | |
934 | ||
935 | return -ENOIOCTLCMD; | |
936 | } | |
937 | ||
938 | static int soc_camera_s_parm(struct file *file, void *fh, | |
939 | struct v4l2_streamparm *a) | |
940 | { | |
57bee29d | 941 | struct soc_camera_device *icd = file->private_data; |
c9f6ef69 GL |
942 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
943 | ||
944 | if (ici->ops->set_parm) | |
945 | return ici->ops->set_parm(icd, a); | |
946 | ||
947 | return -ENOIOCTLCMD; | |
948 | } | |
949 | ||
e55222ef | 950 | static int soc_camera_g_chip_ident(struct file *file, void *fh, |
aecde8b5 | 951 | struct v4l2_dbg_chip_ident *id) |
e55222ef | 952 | { |
57bee29d | 953 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 954 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
e55222ef | 955 | |
c9c1f1c0 | 956 | return v4l2_subdev_call(sd, core, g_chip_ident, id); |
e55222ef GL |
957 | } |
958 | ||
959 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
960 | static int soc_camera_g_register(struct file *file, void *fh, | |
aecde8b5 | 961 | struct v4l2_dbg_register *reg) |
e55222ef | 962 | { |
57bee29d | 963 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 964 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
e55222ef | 965 | |
c9c1f1c0 | 966 | return v4l2_subdev_call(sd, core, g_register, reg); |
e55222ef GL |
967 | } |
968 | ||
969 | static int soc_camera_s_register(struct file *file, void *fh, | |
aecde8b5 | 970 | struct v4l2_dbg_register *reg) |
e55222ef | 971 | { |
57bee29d | 972 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 973 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
e55222ef | 974 | |
c9c1f1c0 | 975 | return v4l2_subdev_call(sd, core, s_register, reg); |
e55222ef GL |
976 | } |
977 | #endif | |
978 | ||
e55222ef GL |
979 | /* So far this function cannot fail */ |
980 | static void scan_add_host(struct soc_camera_host *ici) | |
981 | { | |
982 | struct soc_camera_device *icd; | |
983 | ||
984 | mutex_lock(&list_lock); | |
985 | ||
986 | list_for_each_entry(icd, &devices, list) { | |
987 | if (icd->iface == ici->nr) { | |
40e2e092 | 988 | int ret; |
979ea1dd | 989 | icd->dev.parent = ici->v4l2_dev.dev; |
40e2e092 GL |
990 | dev_set_name(&icd->dev, "%u-%u", icd->iface, |
991 | icd->devnum); | |
992 | ret = device_register(&icd->dev); | |
993 | if (ret < 0) { | |
994 | icd->dev.parent = NULL; | |
995 | dev_err(&icd->dev, | |
996 | "Cannot register device: %d\n", ret); | |
997 | } | |
e55222ef GL |
998 | } |
999 | } | |
1000 | ||
1001 | mutex_unlock(&list_lock); | |
1002 | } | |
1003 | ||
40e2e092 GL |
1004 | #ifdef CONFIG_I2C_BOARDINFO |
1005 | static int soc_camera_init_i2c(struct soc_camera_device *icd, | |
1006 | struct soc_camera_link *icl) | |
e55222ef | 1007 | { |
40e2e092 | 1008 | struct i2c_client *client; |
979ea1dd | 1009 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
40e2e092 | 1010 | struct i2c_adapter *adap = i2c_get_adapter(icl->i2c_adapter_id); |
979ea1dd | 1011 | struct v4l2_subdev *subdev; |
e55222ef | 1012 | |
40e2e092 | 1013 | if (!adap) { |
40e2e092 GL |
1014 | dev_err(&icd->dev, "Cannot get I2C adapter #%d. No driver?\n", |
1015 | icl->i2c_adapter_id); | |
1016 | goto ei2cga; | |
1017 | } | |
e55222ef | 1018 | |
40e2e092 | 1019 | icl->board_info->platform_data = icd; |
e55222ef | 1020 | |
979ea1dd | 1021 | subdev = v4l2_i2c_new_subdev_board(&ici->v4l2_dev, adap, |
9a1f8b34 | 1022 | icl->board_info, NULL); |
d74f841c | 1023 | if (!subdev) |
40e2e092 | 1024 | goto ei2cnd; |
e55222ef | 1025 | |
c4ce6d14 | 1026 | client = v4l2_get_subdevdata(subdev); |
979ea1dd | 1027 | |
40e2e092 GL |
1028 | /* Use to_i2c_client(dev) to recover the i2c client */ |
1029 | dev_set_drvdata(&icd->dev, &client->dev); | |
e55222ef | 1030 | |
40e2e092 GL |
1031 | return 0; |
1032 | ei2cnd: | |
1033 | i2c_put_adapter(adap); | |
1034 | ei2cga: | |
d74f841c | 1035 | return -ENODEV; |
e55222ef GL |
1036 | } |
1037 | ||
40e2e092 GL |
1038 | static void soc_camera_free_i2c(struct soc_camera_device *icd) |
1039 | { | |
1040 | struct i2c_client *client = | |
1041 | to_i2c_client(to_soc_camera_control(icd)); | |
c8dd7078 | 1042 | struct i2c_adapter *adap = client->adapter; |
40e2e092 | 1043 | dev_set_drvdata(&icd->dev, NULL); |
979ea1dd | 1044 | v4l2_device_unregister_subdev(i2c_get_clientdata(client)); |
40e2e092 | 1045 | i2c_unregister_device(client); |
c8dd7078 | 1046 | i2c_put_adapter(adap); |
40e2e092 GL |
1047 | } |
1048 | #else | |
1049 | #define soc_camera_init_i2c(icd, icl) (-ENODEV) | |
1050 | #define soc_camera_free_i2c(icd) do {} while (0) | |
1051 | #endif | |
1052 | ||
979ea1dd | 1053 | static int soc_camera_video_start(struct soc_camera_device *icd); |
40e2e092 GL |
1054 | static int video_dev_create(struct soc_camera_device *icd); |
1055 | /* Called during host-driver probe */ | |
e55222ef GL |
1056 | static int soc_camera_probe(struct device *dev) |
1057 | { | |
1058 | struct soc_camera_device *icd = to_soc_camera_dev(dev); | |
979ea1dd | 1059 | struct soc_camera_host *ici = to_soc_camera_host(dev->parent); |
40e2e092 | 1060 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
979ea1dd | 1061 | struct device *control = NULL; |
6a6c8786 | 1062 | struct v4l2_subdev *sd; |
760697be | 1063 | struct v4l2_mbus_framefmt mf; |
e55222ef GL |
1064 | int ret; |
1065 | ||
40e2e092 | 1066 | dev_info(dev, "Probing %s\n", dev_name(dev)); |
1c3bb743 | 1067 | |
96e442c1 AP |
1068 | ret = regulator_bulk_get(icd->pdev, icl->num_regulators, |
1069 | icl->regulators); | |
1070 | if (ret < 0) | |
1071 | goto ereg; | |
1072 | ||
1073 | ret = soc_camera_power_set(icd, icl, 1); | |
1074 | if (ret < 0) | |
1075 | goto epower; | |
979ea1dd GL |
1076 | |
1077 | /* The camera could have been already on, try to reset */ | |
1078 | if (icl->reset) | |
1079 | icl->reset(icd->pdev); | |
1080 | ||
1081 | ret = ici->ops->add(icd); | |
1082 | if (ret < 0) | |
1083 | goto eadd; | |
1084 | ||
1085 | /* Must have icd->vdev before registering the device */ | |
40e2e092 GL |
1086 | ret = video_dev_create(icd); |
1087 | if (ret < 0) | |
1088 | goto evdc; | |
1c3bb743 | 1089 | |
40e2e092 GL |
1090 | /* Non-i2c cameras, e.g., soc_camera_platform, have no board_info */ |
1091 | if (icl->board_info) { | |
1092 | ret = soc_camera_init_i2c(icd, icl); | |
1093 | if (ret < 0) | |
1094 | goto eadddev; | |
1095 | } else if (!icl->add_device || !icl->del_device) { | |
1c3bb743 | 1096 | ret = -EINVAL; |
40e2e092 GL |
1097 | goto eadddev; |
1098 | } else { | |
979ea1dd GL |
1099 | if (icl->module_name) |
1100 | ret = request_module(icl->module_name); | |
1101 | ||
40e2e092 GL |
1102 | ret = icl->add_device(icl, &icd->dev); |
1103 | if (ret < 0) | |
1104 | goto eadddev; | |
1c3bb743 | 1105 | |
96c75399 GL |
1106 | /* |
1107 | * FIXME: this is racy, have to use driver-binding notification, | |
1108 | * when it is available | |
1109 | */ | |
979ea1dd | 1110 | control = to_soc_camera_control(icd); |
08590b96 | 1111 | if (!control || !control->driver || !dev_get_drvdata(control) || |
979ea1dd GL |
1112 | !try_module_get(control->driver->owner)) { |
1113 | icl->del_device(icl); | |
1114 | goto enodrv; | |
1115 | } | |
40e2e092 | 1116 | } |
e55222ef | 1117 | |
24105ebc GL |
1118 | sd = soc_camera_to_subdev(icd); |
1119 | sd->grp_id = (long)icd; | |
1120 | ||
fa48984e GL |
1121 | /* At this point client .probe() should have run already */ |
1122 | ret = soc_camera_init_user_formats(icd); | |
1123 | if (ret < 0) | |
1124 | goto eiufmt; | |
1125 | ||
fa48984e GL |
1126 | icd->field = V4L2_FIELD_ANY; |
1127 | ||
b6a633c1 GL |
1128 | icd->vdev->lock = &icd->video_lock; |
1129 | ||
1130 | /* | |
1131 | * ..._video_start() will create a device node, video_register_device() | |
1132 | * itself is protected against concurrent open() calls, but we also have | |
1133 | * to protect our data. | |
1134 | */ | |
979ea1dd GL |
1135 | mutex_lock(&icd->video_lock); |
1136 | ||
1137 | ret = soc_camera_video_start(icd); | |
1138 | if (ret < 0) | |
1139 | goto evidstart; | |
1140 | ||
6a6c8786 | 1141 | /* Try to improve our guess of a reasonable window format */ |
760697be GL |
1142 | if (!v4l2_subdev_call(sd, video, g_mbus_fmt, &mf)) { |
1143 | icd->user_width = mf.width; | |
1144 | icd->user_height = mf.height; | |
1145 | icd->colorspace = mf.colorspace; | |
1146 | icd->field = mf.field; | |
6a6c8786 GL |
1147 | } |
1148 | ||
40e2e092 | 1149 | /* Do we have to sysfs_remove_link() before device_unregister()? */ |
6a6c8786 | 1150 | if (sysfs_create_link(&icd->dev.kobj, &to_soc_camera_control(icd)->kobj, |
40e2e092 GL |
1151 | "control")) |
1152 | dev_warn(&icd->dev, "Failed creating the control symlink\n"); | |
025c18a1 | 1153 | |
979ea1dd GL |
1154 | ici->ops->remove(icd); |
1155 | ||
96e442c1 | 1156 | soc_camera_power_set(icd, icl, 0); |
979ea1dd GL |
1157 | |
1158 | mutex_unlock(&icd->video_lock); | |
025c18a1 | 1159 | |
40e2e092 | 1160 | return 0; |
e55222ef | 1161 | |
979ea1dd GL |
1162 | evidstart: |
1163 | mutex_unlock(&icd->video_lock); | |
fa48984e GL |
1164 | soc_camera_free_user_formats(icd); |
1165 | eiufmt: | |
979ea1dd | 1166 | if (icl->board_info) { |
40e2e092 | 1167 | soc_camera_free_i2c(icd); |
979ea1dd | 1168 | } else { |
40e2e092 | 1169 | icl->del_device(icl); |
979ea1dd GL |
1170 | module_put(control->driver->owner); |
1171 | } | |
1172 | enodrv: | |
40e2e092 GL |
1173 | eadddev: |
1174 | video_device_release(icd->vdev); | |
1175 | evdc: | |
979ea1dd GL |
1176 | ici->ops->remove(icd); |
1177 | eadd: | |
96e442c1 | 1178 | soc_camera_power_set(icd, icl, 0); |
979ea1dd | 1179 | epower: |
96e442c1 AP |
1180 | regulator_bulk_free(icl->num_regulators, icl->regulators); |
1181 | ereg: | |
e55222ef GL |
1182 | return ret; |
1183 | } | |
1184 | ||
5d28d525 GL |
1185 | /* |
1186 | * This is called on device_unregister, which only means we have to disconnect | |
1187 | * from the host, but not remove ourselves from the device list | |
1188 | */ | |
e55222ef GL |
1189 | static int soc_camera_remove(struct device *dev) |
1190 | { | |
1191 | struct soc_camera_device *icd = to_soc_camera_dev(dev); | |
40e2e092 GL |
1192 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
1193 | struct video_device *vdev = icd->vdev; | |
e55222ef | 1194 | |
40e2e092 | 1195 | BUG_ON(!dev->parent); |
e55222ef | 1196 | |
40e2e092 | 1197 | if (vdev) { |
40e2e092 GL |
1198 | video_unregister_device(vdev); |
1199 | icd->vdev = NULL; | |
40e2e092 GL |
1200 | } |
1201 | ||
979ea1dd | 1202 | if (icl->board_info) { |
40e2e092 | 1203 | soc_camera_free_i2c(icd); |
979ea1dd GL |
1204 | } else { |
1205 | struct device_driver *drv = to_soc_camera_control(icd) ? | |
1206 | to_soc_camera_control(icd)->driver : NULL; | |
1207 | if (drv) { | |
1208 | icl->del_device(icl); | |
1209 | module_put(drv->owner); | |
1210 | } | |
1211 | } | |
fa48984e | 1212 | soc_camera_free_user_formats(icd); |
025c18a1 | 1213 | |
96e442c1 AP |
1214 | regulator_bulk_free(icl->num_regulators, icl->regulators); |
1215 | ||
e55222ef GL |
1216 | return 0; |
1217 | } | |
1218 | ||
2e521061 RJ |
1219 | static int soc_camera_suspend(struct device *dev, pm_message_t state) |
1220 | { | |
1221 | struct soc_camera_device *icd = to_soc_camera_dev(dev); | |
1222 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1223 | int ret = 0; | |
1224 | ||
1225 | if (ici->ops->suspend) | |
1226 | ret = ici->ops->suspend(icd, state); | |
1227 | ||
1228 | return ret; | |
1229 | } | |
1230 | ||
1231 | static int soc_camera_resume(struct device *dev) | |
1232 | { | |
1233 | struct soc_camera_device *icd = to_soc_camera_dev(dev); | |
1234 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1235 | int ret = 0; | |
1236 | ||
1237 | if (ici->ops->resume) | |
1238 | ret = ici->ops->resume(icd); | |
1239 | ||
1240 | return ret; | |
1241 | } | |
1242 | ||
52d268a3 | 1243 | struct bus_type soc_camera_bus_type = { |
e55222ef GL |
1244 | .name = "soc-camera", |
1245 | .probe = soc_camera_probe, | |
1246 | .remove = soc_camera_remove, | |
2e521061 RJ |
1247 | .suspend = soc_camera_suspend, |
1248 | .resume = soc_camera_resume, | |
e55222ef | 1249 | }; |
52d268a3 | 1250 | EXPORT_SYMBOL_GPL(soc_camera_bus_type); |
e55222ef GL |
1251 | |
1252 | static struct device_driver ic_drv = { | |
1253 | .name = "camera", | |
1254 | .bus = &soc_camera_bus_type, | |
1255 | .owner = THIS_MODULE, | |
1256 | }; | |
1257 | ||
e55222ef GL |
1258 | static void dummy_release(struct device *dev) |
1259 | { | |
1260 | } | |
1261 | ||
6a6c8786 GL |
1262 | static int default_cropcap(struct soc_camera_device *icd, |
1263 | struct v4l2_cropcap *a) | |
1264 | { | |
1265 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1266 | return v4l2_subdev_call(sd, video, cropcap, a); | |
1267 | } | |
1268 | ||
1269 | static int default_g_crop(struct soc_camera_device *icd, struct v4l2_crop *a) | |
1270 | { | |
1271 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1272 | return v4l2_subdev_call(sd, video, g_crop, a); | |
1273 | } | |
1274 | ||
1275 | static int default_s_crop(struct soc_camera_device *icd, struct v4l2_crop *a) | |
1276 | { | |
1277 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1278 | return v4l2_subdev_call(sd, video, s_crop, a); | |
1279 | } | |
1280 | ||
06e17821 JK |
1281 | static int default_g_parm(struct soc_camera_device *icd, |
1282 | struct v4l2_streamparm *parm) | |
1283 | { | |
1284 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1285 | return v4l2_subdev_call(sd, video, g_parm, parm); | |
1286 | } | |
1287 | ||
1288 | static int default_s_parm(struct soc_camera_device *icd, | |
1289 | struct v4l2_streamparm *parm) | |
1290 | { | |
1291 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1292 | return v4l2_subdev_call(sd, video, s_parm, parm); | |
1293 | } | |
1294 | ||
ed5b65dc QX |
1295 | static int default_enum_fsizes(struct soc_camera_device *icd, |
1296 | struct v4l2_frmsizeenum *fsize) | |
1297 | { | |
1298 | int ret; | |
1299 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1300 | const struct soc_camera_format_xlate *xlate; | |
1301 | __u32 pixfmt = fsize->pixel_format; | |
1302 | struct v4l2_frmsizeenum fsize_mbus = *fsize; | |
1303 | ||
1304 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); | |
1305 | if (!xlate) | |
1306 | return -EINVAL; | |
1307 | /* map xlate-code to pixel_format, sensor only handle xlate-code*/ | |
1308 | fsize_mbus.pixel_format = xlate->code; | |
1309 | ||
1310 | ret = v4l2_subdev_call(sd, video, enum_mbus_fsizes, &fsize_mbus); | |
1311 | if (ret < 0) | |
1312 | return ret; | |
1313 | ||
1314 | *fsize = fsize_mbus; | |
1315 | fsize->pixel_format = pixfmt; | |
1316 | ||
1317 | return 0; | |
1318 | } | |
1319 | ||
64ff9ba5 GL |
1320 | static void soc_camera_device_init(struct device *dev, void *pdata) |
1321 | { | |
1322 | dev->platform_data = pdata; | |
1323 | dev->bus = &soc_camera_bus_type; | |
1324 | dev->release = dummy_release; | |
1325 | } | |
1326 | ||
b8d9904c | 1327 | int soc_camera_host_register(struct soc_camera_host *ici) |
e55222ef | 1328 | { |
e55222ef | 1329 | struct soc_camera_host *ix; |
979ea1dd | 1330 | int ret; |
e55222ef | 1331 | |
64f5905e GL |
1332 | if (!ici || !ici->ops || |
1333 | !ici->ops->try_fmt || | |
1334 | !ici->ops->set_fmt || | |
1335 | !ici->ops->set_bus_param || | |
1336 | !ici->ops->querycap || | |
592c2aba GL |
1337 | ((!ici->ops->init_videobuf || |
1338 | !ici->ops->reqbufs) && | |
1339 | !ici->ops->init_videobuf2) || | |
64f5905e GL |
1340 | !ici->ops->add || |
1341 | !ici->ops->remove || | |
eff505fa | 1342 | !ici->ops->poll || |
979ea1dd | 1343 | !ici->v4l2_dev.dev) |
e55222ef GL |
1344 | return -EINVAL; |
1345 | ||
6a6c8786 GL |
1346 | if (!ici->ops->set_crop) |
1347 | ici->ops->set_crop = default_s_crop; | |
1348 | if (!ici->ops->get_crop) | |
1349 | ici->ops->get_crop = default_g_crop; | |
1350 | if (!ici->ops->cropcap) | |
1351 | ici->ops->cropcap = default_cropcap; | |
06e17821 JK |
1352 | if (!ici->ops->set_parm) |
1353 | ici->ops->set_parm = default_s_parm; | |
1354 | if (!ici->ops->get_parm) | |
1355 | ici->ops->get_parm = default_g_parm; | |
ed5b65dc QX |
1356 | if (!ici->ops->enum_fsizes) |
1357 | ici->ops->enum_fsizes = default_enum_fsizes; | |
6a6c8786 | 1358 | |
e55222ef GL |
1359 | mutex_lock(&list_lock); |
1360 | list_for_each_entry(ix, &hosts, list) { | |
1361 | if (ix->nr == ici->nr) { | |
979ea1dd GL |
1362 | ret = -EBUSY; |
1363 | goto edevreg; | |
e55222ef GL |
1364 | } |
1365 | } | |
1366 | ||
979ea1dd GL |
1367 | ret = v4l2_device_register(ici->v4l2_dev.dev, &ici->v4l2_dev); |
1368 | if (ret < 0) | |
1369 | goto edevreg; | |
eff505fa | 1370 | |
e55222ef GL |
1371 | list_add_tail(&ici->list, &hosts); |
1372 | mutex_unlock(&list_lock); | |
1373 | ||
e55222ef GL |
1374 | scan_add_host(ici); |
1375 | ||
1376 | return 0; | |
979ea1dd GL |
1377 | |
1378 | edevreg: | |
1379 | mutex_unlock(&list_lock); | |
1380 | return ret; | |
e55222ef GL |
1381 | } |
1382 | EXPORT_SYMBOL(soc_camera_host_register); | |
1383 | ||
1384 | /* Unregister all clients! */ | |
1385 | void soc_camera_host_unregister(struct soc_camera_host *ici) | |
1386 | { | |
1387 | struct soc_camera_device *icd; | |
1388 | ||
1389 | mutex_lock(&list_lock); | |
1390 | ||
1391 | list_del(&ici->list); | |
1392 | ||
1393 | list_for_each_entry(icd, &devices, list) { | |
979ea1dd | 1394 | if (icd->iface == ici->nr) { |
64ff9ba5 | 1395 | void *pdata = icd->dev.platform_data; |
40e2e092 | 1396 | /* The bus->remove will be called */ |
e55222ef | 1397 | device_unregister(&icd->dev); |
76823b79 GL |
1398 | /* |
1399 | * Not before device_unregister(), .remove | |
1400 | * needs parent to call ici->ops->remove(). | |
1401 | * If the host module is loaded again, device_register() | |
1402 | * would complain "already initialised," since 2.6.32 | |
1403 | * this is also needed to prevent use-after-free of the | |
1404 | * device private data. | |
1405 | */ | |
1406 | memset(&icd->dev, 0, sizeof(icd->dev)); | |
64ff9ba5 | 1407 | soc_camera_device_init(&icd->dev, pdata); |
e55222ef GL |
1408 | } |
1409 | } | |
1410 | ||
1411 | mutex_unlock(&list_lock); | |
1412 | ||
979ea1dd | 1413 | v4l2_device_unregister(&ici->v4l2_dev); |
e55222ef GL |
1414 | } |
1415 | EXPORT_SYMBOL(soc_camera_host_unregister); | |
1416 | ||
1417 | /* Image capture device */ | |
40e2e092 | 1418 | static int soc_camera_device_register(struct soc_camera_device *icd) |
e55222ef GL |
1419 | { |
1420 | struct soc_camera_device *ix; | |
1421 | int num = -1, i; | |
1422 | ||
e55222ef GL |
1423 | for (i = 0; i < 256 && num < 0; i++) { |
1424 | num = i; | |
40e2e092 | 1425 | /* Check if this index is available on this interface */ |
e55222ef GL |
1426 | list_for_each_entry(ix, &devices, list) { |
1427 | if (ix->iface == icd->iface && ix->devnum == i) { | |
1428 | num = -1; | |
1429 | break; | |
1430 | } | |
1431 | } | |
1432 | } | |
1433 | ||
1434 | if (num < 0) | |
5d28d525 GL |
1435 | /* |
1436 | * ok, we have 256 cameras on this host... | |
1437 | * man, stay reasonable... | |
1438 | */ | |
e55222ef GL |
1439 | return -ENOMEM; |
1440 | ||
64ff9ba5 | 1441 | icd->devnum = num; |
64f5905e GL |
1442 | icd->use_count = 0; |
1443 | icd->host_priv = NULL; | |
1c3bb743 | 1444 | mutex_init(&icd->video_lock); |
e55222ef | 1445 | |
40e2e092 GL |
1446 | list_add_tail(&icd->list, &devices); |
1447 | ||
1448 | return 0; | |
e55222ef | 1449 | } |
e55222ef | 1450 | |
40e2e092 | 1451 | static void soc_camera_device_unregister(struct soc_camera_device *icd) |
e55222ef | 1452 | { |
e55222ef | 1453 | list_del(&icd->list); |
e55222ef | 1454 | } |
e55222ef | 1455 | |
a399810c HV |
1456 | static const struct v4l2_ioctl_ops soc_camera_ioctl_ops = { |
1457 | .vidioc_querycap = soc_camera_querycap, | |
1458 | .vidioc_g_fmt_vid_cap = soc_camera_g_fmt_vid_cap, | |
1459 | .vidioc_enum_fmt_vid_cap = soc_camera_enum_fmt_vid_cap, | |
1460 | .vidioc_s_fmt_vid_cap = soc_camera_s_fmt_vid_cap, | |
1461 | .vidioc_enum_input = soc_camera_enum_input, | |
1462 | .vidioc_g_input = soc_camera_g_input, | |
1463 | .vidioc_s_input = soc_camera_s_input, | |
1464 | .vidioc_s_std = soc_camera_s_std, | |
ed5b65dc | 1465 | .vidioc_enum_framesizes = soc_camera_enum_fsizes, |
a399810c HV |
1466 | .vidioc_reqbufs = soc_camera_reqbufs, |
1467 | .vidioc_try_fmt_vid_cap = soc_camera_try_fmt_vid_cap, | |
1468 | .vidioc_querybuf = soc_camera_querybuf, | |
1469 | .vidioc_qbuf = soc_camera_qbuf, | |
1470 | .vidioc_dqbuf = soc_camera_dqbuf, | |
1471 | .vidioc_streamon = soc_camera_streamon, | |
1472 | .vidioc_streamoff = soc_camera_streamoff, | |
1473 | .vidioc_queryctrl = soc_camera_queryctrl, | |
1474 | .vidioc_g_ctrl = soc_camera_g_ctrl, | |
1475 | .vidioc_s_ctrl = soc_camera_s_ctrl, | |
1476 | .vidioc_cropcap = soc_camera_cropcap, | |
1477 | .vidioc_g_crop = soc_camera_g_crop, | |
1478 | .vidioc_s_crop = soc_camera_s_crop, | |
c9f6ef69 GL |
1479 | .vidioc_g_parm = soc_camera_g_parm, |
1480 | .vidioc_s_parm = soc_camera_s_parm, | |
a399810c HV |
1481 | .vidioc_g_chip_ident = soc_camera_g_chip_ident, |
1482 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
1483 | .vidioc_g_register = soc_camera_g_register, | |
1484 | .vidioc_s_register = soc_camera_s_register, | |
1485 | #endif | |
1486 | }; | |
1487 | ||
40e2e092 | 1488 | static int video_dev_create(struct soc_camera_device *icd) |
e55222ef GL |
1489 | { |
1490 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
40e2e092 | 1491 | struct video_device *vdev = video_device_alloc(); |
e55222ef | 1492 | |
e55222ef | 1493 | if (!vdev) |
40e2e092 | 1494 | return -ENOMEM; |
e55222ef GL |
1495 | |
1496 | strlcpy(vdev->name, ici->drv_name, sizeof(vdev->name)); | |
1c3bb743 | 1497 | |
5e85e732 | 1498 | vdev->parent = &icd->dev; |
e55222ef GL |
1499 | vdev->current_norm = V4L2_STD_UNKNOWN; |
1500 | vdev->fops = &soc_camera_fops; | |
a399810c | 1501 | vdev->ioctl_ops = &soc_camera_ioctl_ops; |
e55222ef | 1502 | vdev->release = video_device_release; |
40e2e092 | 1503 | vdev->tvnorms = V4L2_STD_UNKNOWN; |
e55222ef | 1504 | |
e55222ef GL |
1505 | icd->vdev = vdev; |
1506 | ||
1507 | return 0; | |
40e2e092 | 1508 | } |
e55222ef | 1509 | |
40e2e092 | 1510 | /* |
979ea1dd | 1511 | * Called from soc_camera_probe() above (with .video_lock held???) |
40e2e092 | 1512 | */ |
979ea1dd | 1513 | static int soc_camera_video_start(struct soc_camera_device *icd) |
40e2e092 | 1514 | { |
d364ee4f | 1515 | const struct device_type *type = icd->vdev->dev.type; |
979ea1dd | 1516 | int ret; |
40e2e092 GL |
1517 | |
1518 | if (!icd->dev.parent) | |
1519 | return -ENODEV; | |
1520 | ||
1521 | if (!icd->ops || | |
40e2e092 GL |
1522 | !icd->ops->query_bus_param || |
1523 | !icd->ops->set_bus_param) | |
1524 | return -EINVAL; | |
1525 | ||
46b21094 | 1526 | ret = video_register_device(icd->vdev, VFL_TYPE_GRABBER, -1); |
979ea1dd GL |
1527 | if (ret < 0) { |
1528 | dev_err(&icd->dev, "video_register_device failed: %d\n", ret); | |
1529 | return ret; | |
1530 | } | |
40e2e092 | 1531 | |
4f9fb5ed MCC |
1532 | /* Restore device type, possibly set by the subdevice driver */ |
1533 | icd->vdev->dev.type = type; | |
1534 | ||
979ea1dd | 1535 | return 0; |
e55222ef | 1536 | } |
e55222ef | 1537 | |
40e2e092 | 1538 | static int __devinit soc_camera_pdrv_probe(struct platform_device *pdev) |
0fd327bd | 1539 | { |
40e2e092 GL |
1540 | struct soc_camera_link *icl = pdev->dev.platform_data; |
1541 | struct soc_camera_device *icd; | |
c41debaf | 1542 | int ret; |
0fd327bd | 1543 | |
40e2e092 GL |
1544 | if (!icl) |
1545 | return -EINVAL; | |
0fd327bd | 1546 | |
40e2e092 GL |
1547 | icd = kzalloc(sizeof(*icd), GFP_KERNEL); |
1548 | if (!icd) | |
1549 | return -ENOMEM; | |
0fd327bd | 1550 | |
40e2e092 | 1551 | icd->iface = icl->bus_id; |
979ea1dd | 1552 | icd->pdev = &pdev->dev; |
40e2e092 | 1553 | platform_set_drvdata(pdev, icd); |
0fd327bd | 1554 | |
40e2e092 GL |
1555 | ret = soc_camera_device_register(icd); |
1556 | if (ret < 0) | |
1557 | goto escdevreg; | |
0fd327bd | 1558 | |
64ff9ba5 GL |
1559 | soc_camera_device_init(&icd->dev, icl); |
1560 | ||
6a6c8786 GL |
1561 | icd->user_width = DEFAULT_WIDTH; |
1562 | icd->user_height = DEFAULT_HEIGHT; | |
1563 | ||
40e2e092 | 1564 | return 0; |
0fd327bd | 1565 | |
40e2e092 GL |
1566 | escdevreg: |
1567 | kfree(icd); | |
0fd327bd | 1568 | |
40e2e092 | 1569 | return ret; |
c41debaf | 1570 | } |
0fd327bd | 1571 | |
5d28d525 GL |
1572 | /* |
1573 | * Only called on rmmod for each platform device, since they are not | |
40e2e092 | 1574 | * hot-pluggable. Now we know, that all our users - hosts and devices have |
5d28d525 GL |
1575 | * been unloaded already |
1576 | */ | |
40e2e092 | 1577 | static int __devexit soc_camera_pdrv_remove(struct platform_device *pdev) |
c41debaf | 1578 | { |
40e2e092 | 1579 | struct soc_camera_device *icd = platform_get_drvdata(pdev); |
c41debaf | 1580 | |
40e2e092 | 1581 | if (!icd) |
c41debaf GL |
1582 | return -EINVAL; |
1583 | ||
40e2e092 | 1584 | soc_camera_device_unregister(icd); |
c41debaf | 1585 | |
40e2e092 | 1586 | kfree(icd); |
c41debaf | 1587 | |
0fd327bd GL |
1588 | return 0; |
1589 | } | |
1590 | ||
1591 | static struct platform_driver __refdata soc_camera_pdrv = { | |
40e2e092 GL |
1592 | .remove = __devexit_p(soc_camera_pdrv_remove), |
1593 | .driver = { | |
1594 | .name = "soc-camera-pdrv", | |
1595 | .owner = THIS_MODULE, | |
0fd327bd GL |
1596 | }, |
1597 | }; | |
1598 | ||
e55222ef GL |
1599 | static int __init soc_camera_init(void) |
1600 | { | |
1601 | int ret = bus_register(&soc_camera_bus_type); | |
1602 | if (ret) | |
1603 | return ret; | |
1604 | ret = driver_register(&ic_drv); | |
1605 | if (ret) | |
1606 | goto edrvr; | |
e55222ef | 1607 | |
40e2e092 | 1608 | ret = platform_driver_probe(&soc_camera_pdrv, soc_camera_pdrv_probe); |
0fd327bd GL |
1609 | if (ret) |
1610 | goto epdr; | |
1611 | ||
e55222ef GL |
1612 | return 0; |
1613 | ||
0fd327bd GL |
1614 | epdr: |
1615 | driver_unregister(&ic_drv); | |
e55222ef GL |
1616 | edrvr: |
1617 | bus_unregister(&soc_camera_bus_type); | |
1618 | return ret; | |
1619 | } | |
1620 | ||
1621 | static void __exit soc_camera_exit(void) | |
1622 | { | |
0fd327bd | 1623 | platform_driver_unregister(&soc_camera_pdrv); |
e55222ef GL |
1624 | driver_unregister(&ic_drv); |
1625 | bus_unregister(&soc_camera_bus_type); | |
1626 | } | |
1627 | ||
1628 | module_init(soc_camera_init); | |
1629 | module_exit(soc_camera_exit); | |
1630 | ||
1631 | MODULE_DESCRIPTION("Image capture bus driver"); | |
1632 | MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>"); | |
1633 | MODULE_LICENSE("GPL"); | |
0fd327bd | 1634 | MODULE_ALIAS("platform:soc-camera-pdrv"); |