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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) { | |
7dfff953 | 63 | dev_err(icd->pdev, "Cannot enable regulators\n"); |
96e442c1 AP |
64 | return ret; |
65 | } | |
66 | ||
67 | if (icl->power) | |
68 | ret = icl->power(icd->pdev, power_on); | |
69 | if (ret < 0) { | |
7dfff953 | 70 | dev_err(icd->pdev, |
96e442c1 AP |
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) { | |
7dfff953 | 82 | dev_err(icd->pdev, |
96e442c1 AP |
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) { | |
7dfff953 | 90 | dev_err(icd->pdev, "Cannot disable regulators\n"); |
96e442c1 AP |
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 | { | |
7dfff953 | 150 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
dca6b6d1 SA |
151 | struct v4l2_pix_format *pix = &f->fmt.pix; |
152 | int ret; | |
153 | ||
7dfff953 | 154 | dev_dbg(icd->pdev, "TRY_FMT(%c%c%c%c, %ux%u)\n", |
dca6b6d1 SA |
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 | { | |
202 | if (inp->index != 0) | |
203 | return -EINVAL; | |
204 | ||
8318a64b GL |
205 | /* default is camera */ |
206 | inp->type = V4L2_INPUT_TYPE_CAMERA; | |
207 | inp->std = V4L2_STD_UNKNOWN; | |
208 | strcpy(inp->name, "Camera"); | |
e55222ef | 209 | |
8318a64b | 210 | return 0; |
e55222ef GL |
211 | } |
212 | ||
213 | static int soc_camera_g_input(struct file *file, void *priv, unsigned int *i) | |
214 | { | |
215 | *i = 0; | |
216 | ||
217 | return 0; | |
218 | } | |
219 | ||
220 | static int soc_camera_s_input(struct file *file, void *priv, unsigned int i) | |
221 | { | |
222 | if (i > 0) | |
223 | return -EINVAL; | |
224 | ||
225 | return 0; | |
226 | } | |
227 | ||
228 | static int soc_camera_s_std(struct file *file, void *priv, v4l2_std_id *a) | |
229 | { | |
57bee29d | 230 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 231 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
513791ab | 232 | |
c9c1f1c0 | 233 | return v4l2_subdev_call(sd, core, s_std, *a); |
e55222ef GL |
234 | } |
235 | ||
ed5b65dc QX |
236 | static int soc_camera_enum_fsizes(struct file *file, void *fh, |
237 | struct v4l2_frmsizeenum *fsize) | |
238 | { | |
239 | struct soc_camera_device *icd = file->private_data; | |
7dfff953 | 240 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
ed5b65dc QX |
241 | |
242 | return ici->ops->enum_fsizes(icd, fsize); | |
243 | } | |
244 | ||
e55222ef GL |
245 | static int soc_camera_reqbufs(struct file *file, void *priv, |
246 | struct v4l2_requestbuffers *p) | |
247 | { | |
248 | int ret; | |
57bee29d | 249 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 250 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
251 | |
252 | WARN_ON(priv != file->private_data); | |
253 | ||
57bee29d GL |
254 | if (icd->streamer && icd->streamer != file) |
255 | return -EBUSY; | |
256 | ||
592c2aba GL |
257 | if (ici->ops->init_videobuf) { |
258 | ret = videobuf_reqbufs(&icd->vb_vidq, p); | |
259 | if (ret < 0) | |
260 | return ret; | |
261 | ||
262 | ret = ici->ops->reqbufs(icd, p); | |
263 | } else { | |
264 | ret = vb2_reqbufs(&icd->vb2_vidq, p); | |
265 | } | |
e55222ef | 266 | |
57bee29d GL |
267 | if (!ret && !icd->streamer) |
268 | icd->streamer = file; | |
269 | ||
270 | return ret; | |
e55222ef GL |
271 | } |
272 | ||
273 | static int soc_camera_querybuf(struct file *file, void *priv, | |
274 | struct v4l2_buffer *p) | |
275 | { | |
57bee29d | 276 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 277 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
278 | |
279 | WARN_ON(priv != file->private_data); | |
280 | ||
592c2aba GL |
281 | if (ici->ops->init_videobuf) |
282 | return videobuf_querybuf(&icd->vb_vidq, p); | |
283 | else | |
284 | return vb2_querybuf(&icd->vb2_vidq, p); | |
e55222ef GL |
285 | } |
286 | ||
287 | static int soc_camera_qbuf(struct file *file, void *priv, | |
288 | struct v4l2_buffer *p) | |
289 | { | |
57bee29d | 290 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 291 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
292 | |
293 | WARN_ON(priv != file->private_data); | |
294 | ||
57bee29d GL |
295 | if (icd->streamer != file) |
296 | return -EBUSY; | |
297 | ||
592c2aba GL |
298 | if (ici->ops->init_videobuf) |
299 | return videobuf_qbuf(&icd->vb_vidq, p); | |
300 | else | |
301 | return vb2_qbuf(&icd->vb2_vidq, p); | |
e55222ef GL |
302 | } |
303 | ||
304 | static int soc_camera_dqbuf(struct file *file, void *priv, | |
305 | struct v4l2_buffer *p) | |
306 | { | |
57bee29d | 307 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 308 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
309 | |
310 | WARN_ON(priv != file->private_data); | |
311 | ||
57bee29d GL |
312 | if (icd->streamer != file) |
313 | return -EBUSY; | |
314 | ||
592c2aba GL |
315 | if (ici->ops->init_videobuf) |
316 | return videobuf_dqbuf(&icd->vb_vidq, p, file->f_flags & O_NONBLOCK); | |
317 | else | |
318 | return vb2_dqbuf(&icd->vb2_vidq, p, file->f_flags & O_NONBLOCK); | |
e55222ef GL |
319 | } |
320 | ||
40e2e092 | 321 | /* Always entered with .video_lock held */ |
c2786ad2 GL |
322 | static int soc_camera_init_user_formats(struct soc_camera_device *icd) |
323 | { | |
760697be | 324 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
7dfff953 | 325 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
3805f201 HV |
326 | unsigned int i, fmts = 0, raw_fmts = 0; |
327 | int ret; | |
760697be GL |
328 | enum v4l2_mbus_pixelcode code; |
329 | ||
330 | while (!v4l2_subdev_call(sd, video, enum_mbus_fmt, raw_fmts, &code)) | |
331 | raw_fmts++; | |
c2786ad2 GL |
332 | |
333 | if (!ici->ops->get_formats) | |
334 | /* | |
335 | * Fallback mode - the host will have to serve all | |
336 | * sensor-provided formats one-to-one to the user | |
337 | */ | |
760697be | 338 | fmts = raw_fmts; |
c2786ad2 GL |
339 | else |
340 | /* | |
341 | * First pass - only count formats this host-sensor | |
342 | * configuration can provide | |
343 | */ | |
760697be | 344 | for (i = 0; i < raw_fmts; i++) { |
fa48984e GL |
345 | ret = ici->ops->get_formats(icd, i, NULL); |
346 | if (ret < 0) | |
347 | return ret; | |
348 | fmts += ret; | |
349 | } | |
c2786ad2 GL |
350 | |
351 | if (!fmts) | |
352 | return -ENXIO; | |
353 | ||
354 | icd->user_formats = | |
355 | vmalloc(fmts * sizeof(struct soc_camera_format_xlate)); | |
356 | if (!icd->user_formats) | |
357 | return -ENOMEM; | |
358 | ||
7dfff953 | 359 | dev_dbg(icd->pdev, "Found %d supported formats.\n", fmts); |
c2786ad2 GL |
360 | |
361 | /* Second pass - actually fill data formats */ | |
14df2cce | 362 | fmts = 0; |
760697be | 363 | for (i = 0; i < raw_fmts; i++) |
c2786ad2 | 364 | if (!ici->ops->get_formats) { |
760697be | 365 | v4l2_subdev_call(sd, video, enum_mbus_fmt, i, &code); |
d2dcad49 | 366 | icd->user_formats[fmts].host_fmt = |
760697be | 367 | soc_mbus_get_fmtdesc(code); |
d2dcad49 GL |
368 | if (icd->user_formats[fmts].host_fmt) |
369 | icd->user_formats[fmts++].code = code; | |
c2786ad2 | 370 | } else { |
fa48984e GL |
371 | ret = ici->ops->get_formats(icd, i, |
372 | &icd->user_formats[fmts]); | |
373 | if (ret < 0) | |
374 | goto egfmt; | |
375 | fmts += ret; | |
c2786ad2 GL |
376 | } |
377 | ||
d2dcad49 | 378 | icd->num_user_formats = fmts; |
760697be | 379 | icd->current_fmt = &icd->user_formats[0]; |
c2786ad2 GL |
380 | |
381 | return 0; | |
fa48984e GL |
382 | |
383 | egfmt: | |
fa48984e GL |
384 | vfree(icd->user_formats); |
385 | return ret; | |
c2786ad2 GL |
386 | } |
387 | ||
40e2e092 | 388 | /* Always entered with .video_lock held */ |
c2786ad2 GL |
389 | static void soc_camera_free_user_formats(struct soc_camera_device *icd) |
390 | { | |
7dfff953 | 391 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
fa48984e GL |
392 | |
393 | if (ici->ops->put_formats) | |
394 | ici->ops->put_formats(icd); | |
40e2e092 | 395 | icd->current_fmt = NULL; |
fa48984e | 396 | icd->num_user_formats = 0; |
c2786ad2 | 397 | vfree(icd->user_formats); |
40e2e092 | 398 | icd->user_formats = NULL; |
c2786ad2 GL |
399 | } |
400 | ||
760697be | 401 | /* Called with .vb_lock held, or from the first open(2), see comment there */ |
57bee29d | 402 | static int soc_camera_set_fmt(struct soc_camera_device *icd, |
df2ed070 GL |
403 | struct v4l2_format *f) |
404 | { | |
7dfff953 | 405 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
df2ed070 GL |
406 | struct v4l2_pix_format *pix = &f->fmt.pix; |
407 | int ret; | |
408 | ||
7dfff953 | 409 | dev_dbg(icd->pdev, "S_FMT(%c%c%c%c, %ux%u)\n", |
6a6c8786 GL |
410 | pixfmtstr(pix->pixelformat), pix->width, pix->height); |
411 | ||
df2ed070 | 412 | /* We always call try_fmt() before set_fmt() or set_crop() */ |
dca6b6d1 | 413 | ret = soc_camera_try_fmt(icd, f); |
df2ed070 GL |
414 | if (ret < 0) |
415 | return ret; | |
416 | ||
417 | ret = ici->ops->set_fmt(icd, f); | |
418 | if (ret < 0) { | |
419 | return ret; | |
420 | } else if (!icd->current_fmt || | |
760697be | 421 | icd->current_fmt->host_fmt->fourcc != pix->pixelformat) { |
7dfff953 | 422 | dev_err(icd->pdev, |
df2ed070 GL |
423 | "Host driver hasn't set up current format correctly!\n"); |
424 | return -EINVAL; | |
425 | } | |
426 | ||
6a6c8786 GL |
427 | icd->user_width = pix->width; |
428 | icd->user_height = pix->height; | |
0e4c180d SA |
429 | icd->bytesperline = pix->bytesperline; |
430 | icd->sizeimage = pix->sizeimage; | |
760697be | 431 | icd->colorspace = pix->colorspace; |
592c2aba GL |
432 | icd->field = pix->field; |
433 | if (ici->ops->init_videobuf) | |
434 | icd->vb_vidq.field = pix->field; | |
025c18a1 | 435 | |
7dfff953 | 436 | dev_dbg(icd->pdev, "set width: %d height: %d\n", |
6a6c8786 | 437 | icd->user_width, icd->user_height); |
df2ed070 GL |
438 | |
439 | /* set physical bus parameters */ | |
440 | return ici->ops->set_bus_param(icd, pix->pixelformat); | |
441 | } | |
442 | ||
bec43661 | 443 | static int soc_camera_open(struct file *file) |
e55222ef | 444 | { |
979ea1dd | 445 | struct video_device *vdev = video_devdata(file); |
7dfff953 | 446 | struct soc_camera_device *icd = dev_get_drvdata(vdev->parent); |
979ea1dd | 447 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
9dc4e48f | 448 | struct soc_camera_host *ici; |
e55222ef GL |
449 | int ret; |
450 | ||
40e2e092 GL |
451 | if (!icd->ops) |
452 | /* No device driver attached */ | |
453 | return -ENODEV; | |
454 | ||
7dfff953 | 455 | ici = to_soc_camera_host(icd->parent); |
e55222ef | 456 | |
b8d9904c | 457 | if (!try_module_get(ici->ops->owner)) { |
7dfff953 | 458 | dev_err(icd->pdev, "Couldn't lock capture bus driver.\n"); |
57bee29d | 459 | return -EINVAL; |
e55222ef GL |
460 | } |
461 | ||
1a0063a9 GL |
462 | icd->use_count++; |
463 | ||
9dc4e48f GL |
464 | /* Now we really have to activate the camera */ |
465 | if (icd->use_count == 1) { | |
025c18a1 | 466 | /* Restore parameters before the last close() per V4L2 API */ |
df2ed070 GL |
467 | struct v4l2_format f = { |
468 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
469 | .fmt.pix = { | |
6a6c8786 GL |
470 | .width = icd->user_width, |
471 | .height = icd->user_height, | |
025c18a1 | 472 | .field = icd->field, |
760697be GL |
473 | .colorspace = icd->colorspace, |
474 | .pixelformat = | |
475 | icd->current_fmt->host_fmt->fourcc, | |
df2ed070 GL |
476 | }, |
477 | }; | |
478 | ||
96e442c1 AP |
479 | ret = soc_camera_power_set(icd, icl, 1); |
480 | if (ret < 0) | |
481 | goto epower; | |
979ea1dd GL |
482 | |
483 | /* The camera could have been already on, try to reset */ | |
484 | if (icl->reset) | |
485 | icl->reset(icd->pdev); | |
486 | ||
b8d9904c | 487 | ret = ici->ops->add(icd); |
9dc4e48f | 488 | if (ret < 0) { |
7dfff953 | 489 | dev_err(icd->pdev, "Couldn't activate the camera: %d\n", ret); |
9dc4e48f GL |
490 | goto eiciadd; |
491 | } | |
df2ed070 | 492 | |
4f9fb5ed MCC |
493 | pm_runtime_enable(&icd->vdev->dev); |
494 | ret = pm_runtime_resume(&icd->vdev->dev); | |
495 | if (ret < 0 && ret != -ENOSYS) | |
496 | goto eresume; | |
497 | ||
760697be GL |
498 | /* |
499 | * Try to configure with default parameters. Notice: this is the | |
500 | * very first open, so, we cannot race against other calls, | |
501 | * apart from someone else calling open() simultaneously, but | |
502 | * .video_lock is protecting us against it. | |
503 | */ | |
57bee29d | 504 | ret = soc_camera_set_fmt(icd, &f); |
df2ed070 GL |
505 | if (ret < 0) |
506 | goto esfmt; | |
24d8c029 | 507 | |
592c2aba GL |
508 | if (ici->ops->init_videobuf) { |
509 | ici->ops->init_videobuf(&icd->vb_vidq, icd); | |
510 | } else { | |
511 | ret = ici->ops->init_videobuf2(&icd->vb2_vidq, icd); | |
512 | if (ret < 0) | |
513 | goto einitvb; | |
514 | } | |
9dc4e48f GL |
515 | } |
516 | ||
57bee29d | 517 | file->private_data = icd; |
7dfff953 | 518 | dev_dbg(icd->pdev, "camera device open\n"); |
e55222ef | 519 | |
e55222ef GL |
520 | return 0; |
521 | ||
df2ed070 | 522 | /* |
4f9fb5ed | 523 | * First four errors are entered with the .video_lock held |
df2ed070 GL |
524 | * and use_count == 1 |
525 | */ | |
592c2aba | 526 | einitvb: |
df2ed070 | 527 | esfmt: |
4f9fb5ed MCC |
528 | pm_runtime_disable(&icd->vdev->dev); |
529 | eresume: | |
df2ed070 | 530 | ici->ops->remove(icd); |
9dc4e48f | 531 | eiciadd: |
96e442c1 | 532 | soc_camera_power_set(icd, icl, 0); |
979ea1dd | 533 | epower: |
c2786ad2 | 534 | icd->use_count--; |
b8d9904c | 535 | module_put(ici->ops->owner); |
57bee29d | 536 | |
e55222ef GL |
537 | return ret; |
538 | } | |
539 | ||
bec43661 | 540 | static int soc_camera_close(struct file *file) |
e55222ef | 541 | { |
57bee29d | 542 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 543 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef | 544 | |
9dc4e48f | 545 | icd->use_count--; |
40e2e092 | 546 | if (!icd->use_count) { |
979ea1dd GL |
547 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
548 | ||
4f9fb5ed MCC |
549 | pm_runtime_suspend(&icd->vdev->dev); |
550 | pm_runtime_disable(&icd->vdev->dev); | |
551 | ||
b8d9904c | 552 | ici->ops->remove(icd); |
592c2aba GL |
553 | if (ici->ops->init_videobuf2) |
554 | vb2_queue_release(&icd->vb2_vidq); | |
4f9fb5ed | 555 | |
96e442c1 | 556 | soc_camera_power_set(icd, icl, 0); |
40e2e092 | 557 | } |
025c18a1 | 558 | |
57bee29d GL |
559 | if (icd->streamer == file) |
560 | icd->streamer = NULL; | |
561 | ||
b8d9904c | 562 | module_put(ici->ops->owner); |
9dc4e48f | 563 | |
7dfff953 | 564 | dev_dbg(icd->pdev, "camera device close\n"); |
e55222ef GL |
565 | |
566 | return 0; | |
567 | } | |
568 | ||
aba360d8 | 569 | static ssize_t soc_camera_read(struct file *file, char __user *buf, |
abe4c471 | 570 | size_t count, loff_t *ppos) |
e55222ef | 571 | { |
57bee29d | 572 | struct soc_camera_device *icd = file->private_data; |
e55222ef GL |
573 | int err = -EINVAL; |
574 | ||
7dfff953 | 575 | dev_err(icd->pdev, "camera device read not implemented\n"); |
e55222ef GL |
576 | |
577 | return err; | |
578 | } | |
579 | ||
580 | static int soc_camera_mmap(struct file *file, struct vm_area_struct *vma) | |
581 | { | |
57bee29d | 582 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 583 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
584 | int err; |
585 | ||
7dfff953 | 586 | dev_dbg(icd->pdev, "mmap called, vma=0x%08lx\n", (unsigned long)vma); |
e55222ef | 587 | |
57bee29d GL |
588 | if (icd->streamer != file) |
589 | return -EBUSY; | |
590 | ||
592c2aba GL |
591 | if (ici->ops->init_videobuf) |
592 | err = videobuf_mmap_mapper(&icd->vb_vidq, vma); | |
593 | else | |
594 | err = vb2_mmap(&icd->vb2_vidq, vma); | |
e55222ef | 595 | |
7dfff953 | 596 | dev_dbg(icd->pdev, "vma start=0x%08lx, size=%ld, ret=%d\n", |
e55222ef GL |
597 | (unsigned long)vma->vm_start, |
598 | (unsigned long)vma->vm_end - (unsigned long)vma->vm_start, | |
599 | err); | |
600 | ||
601 | return err; | |
602 | } | |
603 | ||
604 | static unsigned int soc_camera_poll(struct file *file, poll_table *pt) | |
605 | { | |
57bee29d | 606 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 607 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef | 608 | |
57bee29d GL |
609 | if (icd->streamer != file) |
610 | return -EBUSY; | |
611 | ||
592c2aba | 612 | if (ici->ops->init_videobuf && list_empty(&icd->vb_vidq.stream)) { |
7dfff953 | 613 | dev_err(icd->pdev, "Trying to poll with no queued buffers!\n"); |
e55222ef GL |
614 | return POLLERR; |
615 | } | |
616 | ||
b8d9904c | 617 | return ici->ops->poll(file, pt); |
e55222ef GL |
618 | } |
619 | ||
592c2aba GL |
620 | void soc_camera_lock(struct vb2_queue *vq) |
621 | { | |
622 | struct soc_camera_device *icd = vb2_get_drv_priv(vq); | |
623 | mutex_lock(&icd->video_lock); | |
624 | } | |
625 | EXPORT_SYMBOL(soc_camera_lock); | |
626 | ||
627 | void soc_camera_unlock(struct vb2_queue *vq) | |
628 | { | |
629 | struct soc_camera_device *icd = vb2_get_drv_priv(vq); | |
630 | mutex_unlock(&icd->video_lock); | |
631 | } | |
632 | EXPORT_SYMBOL(soc_camera_unlock); | |
633 | ||
bec43661 | 634 | static struct v4l2_file_operations soc_camera_fops = { |
e55222ef GL |
635 | .owner = THIS_MODULE, |
636 | .open = soc_camera_open, | |
637 | .release = soc_camera_close, | |
b6a633c1 | 638 | .unlocked_ioctl = video_ioctl2, |
e55222ef GL |
639 | .read = soc_camera_read, |
640 | .mmap = soc_camera_mmap, | |
641 | .poll = soc_camera_poll, | |
e55222ef GL |
642 | }; |
643 | ||
72937890 | 644 | static int soc_camera_s_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 645 | struct v4l2_format *f) |
e55222ef | 646 | { |
57bee29d | 647 | struct soc_camera_device *icd = file->private_data; |
e55222ef | 648 | int ret; |
e55222ef GL |
649 | |
650 | WARN_ON(priv != file->private_data); | |
651 | ||
d366d4a0 | 652 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
7dfff953 | 653 | dev_warn(icd->pdev, "Wrong buf-type %d\n", f->type); |
d366d4a0 GL |
654 | return -EINVAL; |
655 | } | |
656 | ||
57bee29d GL |
657 | if (icd->streamer && icd->streamer != file) |
658 | return -EBUSY; | |
1c3bb743 | 659 | |
7dfff953 GL |
660 | if (is_streaming(to_soc_camera_host(icd->parent), icd)) { |
661 | dev_err(icd->pdev, "S_FMT denied: queue initialised\n"); | |
b6a633c1 | 662 | return -EBUSY; |
1c3bb743 GL |
663 | } |
664 | ||
57bee29d GL |
665 | ret = soc_camera_set_fmt(icd, f); |
666 | ||
667 | if (!ret && !icd->streamer) | |
668 | icd->streamer = file; | |
1c3bb743 | 669 | |
1c3bb743 | 670 | return ret; |
e55222ef GL |
671 | } |
672 | ||
72937890 | 673 | static int soc_camera_enum_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 674 | struct v4l2_fmtdesc *f) |
e55222ef | 675 | { |
57bee29d | 676 | struct soc_camera_device *icd = file->private_data; |
760697be | 677 | const struct soc_mbus_pixelfmt *format; |
e55222ef GL |
678 | |
679 | WARN_ON(priv != file->private_data); | |
680 | ||
c2786ad2 | 681 | if (f->index >= icd->num_user_formats) |
e55222ef GL |
682 | return -EINVAL; |
683 | ||
c2786ad2 | 684 | format = icd->user_formats[f->index].host_fmt; |
e55222ef | 685 | |
760697be GL |
686 | if (format->name) |
687 | strlcpy(f->description, format->name, sizeof(f->description)); | |
e55222ef GL |
688 | f->pixelformat = format->fourcc; |
689 | return 0; | |
690 | } | |
691 | ||
72937890 | 692 | static int soc_camera_g_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 693 | struct v4l2_format *f) |
e55222ef | 694 | { |
57bee29d | 695 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 696 | struct v4l2_pix_format *pix = &f->fmt.pix; |
e55222ef GL |
697 | |
698 | WARN_ON(priv != file->private_data); | |
699 | ||
d366d4a0 GL |
700 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
701 | return -EINVAL; | |
702 | ||
6a6c8786 GL |
703 | pix->width = icd->user_width; |
704 | pix->height = icd->user_height; | |
0e4c180d SA |
705 | pix->bytesperline = icd->bytesperline; |
706 | pix->sizeimage = icd->sizeimage; | |
592c2aba | 707 | pix->field = icd->field; |
760697be | 708 | pix->pixelformat = icd->current_fmt->host_fmt->fourcc; |
760697be | 709 | pix->colorspace = icd->colorspace; |
7dfff953 | 710 | dev_dbg(icd->pdev, "current_fmt->fourcc: 0x%08x\n", |
760697be | 711 | icd->current_fmt->host_fmt->fourcc); |
e55222ef GL |
712 | return 0; |
713 | } | |
714 | ||
715 | static int soc_camera_querycap(struct file *file, void *priv, | |
716 | struct v4l2_capability *cap) | |
717 | { | |
57bee29d | 718 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 719 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
720 | |
721 | WARN_ON(priv != file->private_data); | |
722 | ||
723 | strlcpy(cap->driver, ici->drv_name, sizeof(cap->driver)); | |
b8d9904c | 724 | return ici->ops->querycap(ici, cap); |
e55222ef GL |
725 | } |
726 | ||
727 | static int soc_camera_streamon(struct file *file, void *priv, | |
728 | enum v4l2_buf_type i) | |
729 | { | |
57bee29d | 730 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 731 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
c9c1f1c0 | 732 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
1c3bb743 | 733 | int ret; |
e55222ef GL |
734 | |
735 | WARN_ON(priv != file->private_data); | |
736 | ||
e55222ef GL |
737 | if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
738 | return -EINVAL; | |
739 | ||
57bee29d GL |
740 | if (icd->streamer != file) |
741 | return -EBUSY; | |
742 | ||
e55222ef | 743 | /* This calls buf_queue from host driver's videobuf_queue_ops */ |
592c2aba GL |
744 | if (ici->ops->init_videobuf) |
745 | ret = videobuf_streamon(&icd->vb_vidq); | |
746 | else | |
747 | ret = vb2_streamon(&icd->vb2_vidq, i); | |
748 | ||
7fdbd85b AG |
749 | if (!ret) |
750 | v4l2_subdev_call(sd, video, s_stream, 1); | |
1c3bb743 | 751 | |
1c3bb743 | 752 | return ret; |
e55222ef GL |
753 | } |
754 | ||
755 | static int soc_camera_streamoff(struct file *file, void *priv, | |
756 | enum v4l2_buf_type i) | |
757 | { | |
57bee29d | 758 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 759 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
7dfff953 | 760 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
761 | |
762 | WARN_ON(priv != file->private_data); | |
763 | ||
e55222ef GL |
764 | if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
765 | return -EINVAL; | |
766 | ||
57bee29d GL |
767 | if (icd->streamer != file) |
768 | return -EBUSY; | |
769 | ||
5d28d525 GL |
770 | /* |
771 | * This calls buf_release from host driver's videobuf_queue_ops for all | |
772 | * remaining buffers. When the last buffer is freed, stop capture | |
773 | */ | |
592c2aba GL |
774 | if (ici->ops->init_videobuf) |
775 | videobuf_streamoff(&icd->vb_vidq); | |
776 | else | |
777 | vb2_streamoff(&icd->vb2_vidq, i); | |
e55222ef | 778 | |
c9c1f1c0 | 779 | v4l2_subdev_call(sd, video, s_stream, 0); |
e55222ef GL |
780 | |
781 | return 0; | |
782 | } | |
783 | ||
784 | static int soc_camera_queryctrl(struct file *file, void *priv, | |
785 | struct v4l2_queryctrl *qc) | |
786 | { | |
57bee29d | 787 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 788 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
789 | int i; |
790 | ||
791 | WARN_ON(priv != file->private_data); | |
792 | ||
793 | if (!qc->id) | |
794 | return -EINVAL; | |
795 | ||
2840d249 GL |
796 | /* First check host controls */ |
797 | for (i = 0; i < ici->ops->num_controls; i++) | |
798 | if (qc->id == ici->ops->controls[i].id) { | |
799 | memcpy(qc, &(ici->ops->controls[i]), | |
800 | sizeof(*qc)); | |
801 | return 0; | |
802 | } | |
803 | ||
804 | /* Then device controls */ | |
e55222ef GL |
805 | for (i = 0; i < icd->ops->num_controls; i++) |
806 | if (qc->id == icd->ops->controls[i].id) { | |
807 | memcpy(qc, &(icd->ops->controls[i]), | |
808 | sizeof(*qc)); | |
809 | return 0; | |
810 | } | |
811 | ||
812 | return -EINVAL; | |
813 | } | |
814 | ||
815 | static int soc_camera_g_ctrl(struct file *file, void *priv, | |
816 | struct v4l2_control *ctrl) | |
817 | { | |
57bee29d | 818 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 819 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
c9c1f1c0 | 820 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
2840d249 | 821 | int ret; |
e55222ef GL |
822 | |
823 | WARN_ON(priv != file->private_data); | |
824 | ||
2840d249 GL |
825 | if (ici->ops->get_ctrl) { |
826 | ret = ici->ops->get_ctrl(icd, ctrl); | |
827 | if (ret != -ENOIOCTLCMD) | |
828 | return ret; | |
829 | } | |
830 | ||
c9c1f1c0 | 831 | return v4l2_subdev_call(sd, core, g_ctrl, ctrl); |
e55222ef GL |
832 | } |
833 | ||
834 | static int soc_camera_s_ctrl(struct file *file, void *priv, | |
835 | struct v4l2_control *ctrl) | |
836 | { | |
57bee29d | 837 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 838 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
c9c1f1c0 | 839 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
2840d249 | 840 | int ret; |
e55222ef GL |
841 | |
842 | WARN_ON(priv != file->private_data); | |
843 | ||
2840d249 GL |
844 | if (ici->ops->set_ctrl) { |
845 | ret = ici->ops->set_ctrl(icd, ctrl); | |
846 | if (ret != -ENOIOCTLCMD) | |
847 | return ret; | |
848 | } | |
849 | ||
c9c1f1c0 | 850 | return v4l2_subdev_call(sd, core, s_ctrl, ctrl); |
e55222ef GL |
851 | } |
852 | ||
853 | static int soc_camera_cropcap(struct file *file, void *fh, | |
854 | struct v4l2_cropcap *a) | |
855 | { | |
57bee29d | 856 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 857 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef | 858 | |
6a6c8786 | 859 | return ici->ops->cropcap(icd, a); |
e55222ef GL |
860 | } |
861 | ||
862 | static int soc_camera_g_crop(struct file *file, void *fh, | |
863 | struct v4l2_crop *a) | |
864 | { | |
57bee29d | 865 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 866 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
6a6c8786 | 867 | int ret; |
e55222ef | 868 | |
6a6c8786 | 869 | ret = ici->ops->get_crop(icd, a); |
e55222ef | 870 | |
6a6c8786 | 871 | return ret; |
e55222ef GL |
872 | } |
873 | ||
68a54f0e GL |
874 | /* |
875 | * According to the V4L2 API, drivers shall not update the struct v4l2_crop | |
876 | * argument with the actual geometry, instead, the user shall use G_CROP to | |
ab56d5eb | 877 | * retrieve it. |
68a54f0e | 878 | */ |
e55222ef GL |
879 | static int soc_camera_s_crop(struct file *file, void *fh, |
880 | struct v4l2_crop *a) | |
881 | { | |
57bee29d | 882 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 883 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
6a6c8786 GL |
884 | struct v4l2_rect *rect = &a->c; |
885 | struct v4l2_crop current_crop; | |
e55222ef GL |
886 | int ret; |
887 | ||
888 | if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
889 | return -EINVAL; | |
890 | ||
7dfff953 | 891 | dev_dbg(icd->pdev, "S_CROP(%ux%u@%u:%u)\n", |
6a6c8786 GL |
892 | rect->width, rect->height, rect->left, rect->top); |
893 | ||
6a6c8786 GL |
894 | /* If get_crop fails, we'll let host and / or client drivers decide */ |
895 | ret = ici->ops->get_crop(icd, ¤t_crop); | |
896 | ||
b897a91a | 897 | /* Prohibit window size change with initialised buffers */ |
103754a0 | 898 | if (ret < 0) { |
7dfff953 | 899 | dev_err(icd->pdev, |
103754a0 | 900 | "S_CROP denied: getting current crop failed\n"); |
aee5c2f1 GL |
901 | } else if ((a->c.width == current_crop.c.width && |
902 | a->c.height == current_crop.c.height) || | |
903 | !is_streaming(ici, icd)) { | |
904 | /* same size or not streaming - use .set_crop() */ | |
905 | ret = ici->ops->set_crop(icd, a); | |
906 | } else if (ici->ops->set_livecrop) { | |
907 | ret = ici->ops->set_livecrop(icd, a); | |
908 | } else { | |
7dfff953 | 909 | dev_err(icd->pdev, |
b897a91a GL |
910 | "S_CROP denied: queue initialised and sizes differ\n"); |
911 | ret = -EBUSY; | |
b897a91a GL |
912 | } |
913 | ||
e55222ef GL |
914 | return ret; |
915 | } | |
916 | ||
c9f6ef69 GL |
917 | static int soc_camera_g_parm(struct file *file, void *fh, |
918 | struct v4l2_streamparm *a) | |
919 | { | |
57bee29d | 920 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 921 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
c9f6ef69 GL |
922 | |
923 | if (ici->ops->get_parm) | |
924 | return ici->ops->get_parm(icd, a); | |
925 | ||
926 | return -ENOIOCTLCMD; | |
927 | } | |
928 | ||
929 | static int soc_camera_s_parm(struct file *file, void *fh, | |
930 | struct v4l2_streamparm *a) | |
931 | { | |
57bee29d | 932 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 933 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
c9f6ef69 GL |
934 | |
935 | if (ici->ops->set_parm) | |
936 | return ici->ops->set_parm(icd, a); | |
937 | ||
938 | return -ENOIOCTLCMD; | |
939 | } | |
940 | ||
e55222ef | 941 | static int soc_camera_g_chip_ident(struct file *file, void *fh, |
aecde8b5 | 942 | struct v4l2_dbg_chip_ident *id) |
e55222ef | 943 | { |
57bee29d | 944 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 945 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
e55222ef | 946 | |
c9c1f1c0 | 947 | return v4l2_subdev_call(sd, core, g_chip_ident, id); |
e55222ef GL |
948 | } |
949 | ||
950 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
951 | static int soc_camera_g_register(struct file *file, void *fh, | |
aecde8b5 | 952 | struct v4l2_dbg_register *reg) |
e55222ef | 953 | { |
57bee29d | 954 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 955 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
e55222ef | 956 | |
c9c1f1c0 | 957 | return v4l2_subdev_call(sd, core, g_register, reg); |
e55222ef GL |
958 | } |
959 | ||
960 | static int soc_camera_s_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, s_register, reg); |
e55222ef GL |
967 | } |
968 | #endif | |
969 | ||
7dfff953 GL |
970 | static int soc_camera_probe(struct soc_camera_device *icd); |
971 | ||
e55222ef GL |
972 | /* So far this function cannot fail */ |
973 | static void scan_add_host(struct soc_camera_host *ici) | |
974 | { | |
975 | struct soc_camera_device *icd; | |
976 | ||
977 | mutex_lock(&list_lock); | |
978 | ||
979 | list_for_each_entry(icd, &devices, list) { | |
980 | if (icd->iface == ici->nr) { | |
40e2e092 | 981 | int ret; |
7dfff953 GL |
982 | |
983 | icd->parent = ici->v4l2_dev.dev; | |
984 | ret = soc_camera_probe(icd); | |
e55222ef GL |
985 | } |
986 | } | |
987 | ||
988 | mutex_unlock(&list_lock); | |
989 | } | |
990 | ||
40e2e092 GL |
991 | #ifdef CONFIG_I2C_BOARDINFO |
992 | static int soc_camera_init_i2c(struct soc_camera_device *icd, | |
993 | struct soc_camera_link *icl) | |
e55222ef | 994 | { |
40e2e092 | 995 | struct i2c_client *client; |
7dfff953 | 996 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
40e2e092 | 997 | struct i2c_adapter *adap = i2c_get_adapter(icl->i2c_adapter_id); |
979ea1dd | 998 | struct v4l2_subdev *subdev; |
e55222ef | 999 | |
40e2e092 | 1000 | if (!adap) { |
7dfff953 | 1001 | dev_err(icd->pdev, "Cannot get I2C adapter #%d. No driver?\n", |
40e2e092 GL |
1002 | icl->i2c_adapter_id); |
1003 | goto ei2cga; | |
1004 | } | |
e55222ef | 1005 | |
40e2e092 | 1006 | icl->board_info->platform_data = icd; |
e55222ef | 1007 | |
979ea1dd | 1008 | subdev = v4l2_i2c_new_subdev_board(&ici->v4l2_dev, adap, |
9a1f8b34 | 1009 | icl->board_info, NULL); |
d74f841c | 1010 | if (!subdev) |
40e2e092 | 1011 | goto ei2cnd; |
e55222ef | 1012 | |
c4ce6d14 | 1013 | client = v4l2_get_subdevdata(subdev); |
979ea1dd | 1014 | |
40e2e092 | 1015 | /* Use to_i2c_client(dev) to recover the i2c client */ |
7dfff953 | 1016 | icd->control = &client->dev; |
e55222ef | 1017 | |
40e2e092 GL |
1018 | return 0; |
1019 | ei2cnd: | |
1020 | i2c_put_adapter(adap); | |
1021 | ei2cga: | |
d74f841c | 1022 | return -ENODEV; |
e55222ef GL |
1023 | } |
1024 | ||
40e2e092 GL |
1025 | static void soc_camera_free_i2c(struct soc_camera_device *icd) |
1026 | { | |
1027 | struct i2c_client *client = | |
1028 | to_i2c_client(to_soc_camera_control(icd)); | |
c8dd7078 | 1029 | struct i2c_adapter *adap = client->adapter; |
7dfff953 GL |
1030 | |
1031 | icd->control = NULL; | |
979ea1dd | 1032 | v4l2_device_unregister_subdev(i2c_get_clientdata(client)); |
40e2e092 | 1033 | i2c_unregister_device(client); |
c8dd7078 | 1034 | i2c_put_adapter(adap); |
40e2e092 GL |
1035 | } |
1036 | #else | |
1037 | #define soc_camera_init_i2c(icd, icl) (-ENODEV) | |
1038 | #define soc_camera_free_i2c(icd) do {} while (0) | |
1039 | #endif | |
1040 | ||
979ea1dd | 1041 | static int soc_camera_video_start(struct soc_camera_device *icd); |
40e2e092 GL |
1042 | static int video_dev_create(struct soc_camera_device *icd); |
1043 | /* Called during host-driver probe */ | |
7dfff953 | 1044 | static int soc_camera_probe(struct soc_camera_device *icd) |
e55222ef | 1045 | { |
7dfff953 | 1046 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
40e2e092 | 1047 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
979ea1dd | 1048 | struct device *control = NULL; |
6a6c8786 | 1049 | struct v4l2_subdev *sd; |
760697be | 1050 | struct v4l2_mbus_framefmt mf; |
e55222ef GL |
1051 | int ret; |
1052 | ||
7dfff953 | 1053 | dev_info(icd->pdev, "Probing %s\n", dev_name(icd->pdev)); |
1c3bb743 | 1054 | |
96e442c1 AP |
1055 | ret = regulator_bulk_get(icd->pdev, icl->num_regulators, |
1056 | icl->regulators); | |
1057 | if (ret < 0) | |
1058 | goto ereg; | |
1059 | ||
1060 | ret = soc_camera_power_set(icd, icl, 1); | |
1061 | if (ret < 0) | |
1062 | goto epower; | |
979ea1dd GL |
1063 | |
1064 | /* The camera could have been already on, try to reset */ | |
1065 | if (icl->reset) | |
1066 | icl->reset(icd->pdev); | |
1067 | ||
1068 | ret = ici->ops->add(icd); | |
1069 | if (ret < 0) | |
1070 | goto eadd; | |
1071 | ||
1072 | /* Must have icd->vdev before registering the device */ | |
40e2e092 GL |
1073 | ret = video_dev_create(icd); |
1074 | if (ret < 0) | |
1075 | goto evdc; | |
1c3bb743 | 1076 | |
40e2e092 GL |
1077 | /* Non-i2c cameras, e.g., soc_camera_platform, have no board_info */ |
1078 | if (icl->board_info) { | |
1079 | ret = soc_camera_init_i2c(icd, icl); | |
1080 | if (ret < 0) | |
1081 | goto eadddev; | |
1082 | } else if (!icl->add_device || !icl->del_device) { | |
1c3bb743 | 1083 | ret = -EINVAL; |
40e2e092 GL |
1084 | goto eadddev; |
1085 | } else { | |
979ea1dd GL |
1086 | if (icl->module_name) |
1087 | ret = request_module(icl->module_name); | |
1088 | ||
7dfff953 | 1089 | ret = icl->add_device(icd); |
40e2e092 GL |
1090 | if (ret < 0) |
1091 | goto eadddev; | |
1c3bb743 | 1092 | |
96c75399 GL |
1093 | /* |
1094 | * FIXME: this is racy, have to use driver-binding notification, | |
1095 | * when it is available | |
1096 | */ | |
979ea1dd | 1097 | control = to_soc_camera_control(icd); |
08590b96 | 1098 | if (!control || !control->driver || !dev_get_drvdata(control) || |
979ea1dd | 1099 | !try_module_get(control->driver->owner)) { |
7dfff953 | 1100 | icl->del_device(icd); |
979ea1dd GL |
1101 | goto enodrv; |
1102 | } | |
40e2e092 | 1103 | } |
e55222ef | 1104 | |
24105ebc GL |
1105 | sd = soc_camera_to_subdev(icd); |
1106 | sd->grp_id = (long)icd; | |
1107 | ||
fa48984e GL |
1108 | /* At this point client .probe() should have run already */ |
1109 | ret = soc_camera_init_user_formats(icd); | |
1110 | if (ret < 0) | |
1111 | goto eiufmt; | |
1112 | ||
fa48984e GL |
1113 | icd->field = V4L2_FIELD_ANY; |
1114 | ||
b6a633c1 GL |
1115 | /* |
1116 | * ..._video_start() will create a device node, video_register_device() | |
1117 | * itself is protected against concurrent open() calls, but we also have | |
1118 | * to protect our data. | |
1119 | */ | |
979ea1dd GL |
1120 | mutex_lock(&icd->video_lock); |
1121 | ||
1122 | ret = soc_camera_video_start(icd); | |
1123 | if (ret < 0) | |
1124 | goto evidstart; | |
1125 | ||
6a6c8786 | 1126 | /* Try to improve our guess of a reasonable window format */ |
760697be GL |
1127 | if (!v4l2_subdev_call(sd, video, g_mbus_fmt, &mf)) { |
1128 | icd->user_width = mf.width; | |
1129 | icd->user_height = mf.height; | |
1130 | icd->colorspace = mf.colorspace; | |
1131 | icd->field = mf.field; | |
6a6c8786 GL |
1132 | } |
1133 | ||
979ea1dd GL |
1134 | ici->ops->remove(icd); |
1135 | ||
96e442c1 | 1136 | soc_camera_power_set(icd, icl, 0); |
979ea1dd GL |
1137 | |
1138 | mutex_unlock(&icd->video_lock); | |
025c18a1 | 1139 | |
40e2e092 | 1140 | return 0; |
e55222ef | 1141 | |
979ea1dd GL |
1142 | evidstart: |
1143 | mutex_unlock(&icd->video_lock); | |
fa48984e GL |
1144 | soc_camera_free_user_formats(icd); |
1145 | eiufmt: | |
979ea1dd | 1146 | if (icl->board_info) { |
40e2e092 | 1147 | soc_camera_free_i2c(icd); |
979ea1dd | 1148 | } else { |
7dfff953 | 1149 | icl->del_device(icd); |
979ea1dd GL |
1150 | module_put(control->driver->owner); |
1151 | } | |
1152 | enodrv: | |
40e2e092 GL |
1153 | eadddev: |
1154 | video_device_release(icd->vdev); | |
1155 | evdc: | |
979ea1dd GL |
1156 | ici->ops->remove(icd); |
1157 | eadd: | |
96e442c1 | 1158 | soc_camera_power_set(icd, icl, 0); |
979ea1dd | 1159 | epower: |
96e442c1 AP |
1160 | regulator_bulk_free(icl->num_regulators, icl->regulators); |
1161 | ereg: | |
e55222ef GL |
1162 | return ret; |
1163 | } | |
1164 | ||
5d28d525 GL |
1165 | /* |
1166 | * This is called on device_unregister, which only means we have to disconnect | |
1167 | * from the host, but not remove ourselves from the device list | |
1168 | */ | |
7dfff953 | 1169 | static int soc_camera_remove(struct soc_camera_device *icd) |
e55222ef | 1170 | { |
40e2e092 GL |
1171 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
1172 | struct video_device *vdev = icd->vdev; | |
e55222ef | 1173 | |
7dfff953 | 1174 | BUG_ON(!icd->parent); |
e55222ef | 1175 | |
40e2e092 | 1176 | if (vdev) { |
40e2e092 GL |
1177 | video_unregister_device(vdev); |
1178 | icd->vdev = NULL; | |
40e2e092 GL |
1179 | } |
1180 | ||
979ea1dd | 1181 | if (icl->board_info) { |
40e2e092 | 1182 | soc_camera_free_i2c(icd); |
979ea1dd | 1183 | } else { |
7dfff953 | 1184 | struct device_driver *drv = to_soc_camera_control(icd)->driver; |
979ea1dd | 1185 | if (drv) { |
7dfff953 | 1186 | icl->del_device(icd); |
979ea1dd GL |
1187 | module_put(drv->owner); |
1188 | } | |
1189 | } | |
fa48984e | 1190 | soc_camera_free_user_formats(icd); |
025c18a1 | 1191 | |
96e442c1 AP |
1192 | regulator_bulk_free(icl->num_regulators, icl->regulators); |
1193 | ||
e55222ef GL |
1194 | return 0; |
1195 | } | |
1196 | ||
6a6c8786 GL |
1197 | static int default_cropcap(struct soc_camera_device *icd, |
1198 | struct v4l2_cropcap *a) | |
1199 | { | |
1200 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1201 | return v4l2_subdev_call(sd, video, cropcap, a); | |
1202 | } | |
1203 | ||
1204 | static int default_g_crop(struct soc_camera_device *icd, struct v4l2_crop *a) | |
1205 | { | |
1206 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1207 | return v4l2_subdev_call(sd, video, g_crop, a); | |
1208 | } | |
1209 | ||
1210 | static int default_s_crop(struct soc_camera_device *icd, struct v4l2_crop *a) | |
1211 | { | |
1212 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1213 | return v4l2_subdev_call(sd, video, s_crop, a); | |
1214 | } | |
1215 | ||
06e17821 JK |
1216 | static int default_g_parm(struct soc_camera_device *icd, |
1217 | struct v4l2_streamparm *parm) | |
1218 | { | |
1219 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1220 | return v4l2_subdev_call(sd, video, g_parm, parm); | |
1221 | } | |
1222 | ||
1223 | static int default_s_parm(struct soc_camera_device *icd, | |
1224 | struct v4l2_streamparm *parm) | |
1225 | { | |
1226 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1227 | return v4l2_subdev_call(sd, video, s_parm, parm); | |
1228 | } | |
1229 | ||
ed5b65dc QX |
1230 | static int default_enum_fsizes(struct soc_camera_device *icd, |
1231 | struct v4l2_frmsizeenum *fsize) | |
1232 | { | |
1233 | int ret; | |
1234 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1235 | const struct soc_camera_format_xlate *xlate; | |
1236 | __u32 pixfmt = fsize->pixel_format; | |
1237 | struct v4l2_frmsizeenum fsize_mbus = *fsize; | |
1238 | ||
1239 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); | |
1240 | if (!xlate) | |
1241 | return -EINVAL; | |
1242 | /* map xlate-code to pixel_format, sensor only handle xlate-code*/ | |
1243 | fsize_mbus.pixel_format = xlate->code; | |
1244 | ||
1245 | ret = v4l2_subdev_call(sd, video, enum_mbus_fsizes, &fsize_mbus); | |
1246 | if (ret < 0) | |
1247 | return ret; | |
1248 | ||
1249 | *fsize = fsize_mbus; | |
1250 | fsize->pixel_format = pixfmt; | |
1251 | ||
1252 | return 0; | |
1253 | } | |
1254 | ||
b8d9904c | 1255 | int soc_camera_host_register(struct soc_camera_host *ici) |
e55222ef | 1256 | { |
e55222ef | 1257 | struct soc_camera_host *ix; |
979ea1dd | 1258 | int ret; |
e55222ef | 1259 | |
64f5905e GL |
1260 | if (!ici || !ici->ops || |
1261 | !ici->ops->try_fmt || | |
1262 | !ici->ops->set_fmt || | |
1263 | !ici->ops->set_bus_param || | |
1264 | !ici->ops->querycap || | |
592c2aba GL |
1265 | ((!ici->ops->init_videobuf || |
1266 | !ici->ops->reqbufs) && | |
1267 | !ici->ops->init_videobuf2) || | |
64f5905e GL |
1268 | !ici->ops->add || |
1269 | !ici->ops->remove || | |
eff505fa | 1270 | !ici->ops->poll || |
979ea1dd | 1271 | !ici->v4l2_dev.dev) |
e55222ef GL |
1272 | return -EINVAL; |
1273 | ||
6a6c8786 GL |
1274 | if (!ici->ops->set_crop) |
1275 | ici->ops->set_crop = default_s_crop; | |
1276 | if (!ici->ops->get_crop) | |
1277 | ici->ops->get_crop = default_g_crop; | |
1278 | if (!ici->ops->cropcap) | |
1279 | ici->ops->cropcap = default_cropcap; | |
06e17821 JK |
1280 | if (!ici->ops->set_parm) |
1281 | ici->ops->set_parm = default_s_parm; | |
1282 | if (!ici->ops->get_parm) | |
1283 | ici->ops->get_parm = default_g_parm; | |
ed5b65dc QX |
1284 | if (!ici->ops->enum_fsizes) |
1285 | ici->ops->enum_fsizes = default_enum_fsizes; | |
6a6c8786 | 1286 | |
e55222ef GL |
1287 | mutex_lock(&list_lock); |
1288 | list_for_each_entry(ix, &hosts, list) { | |
1289 | if (ix->nr == ici->nr) { | |
979ea1dd GL |
1290 | ret = -EBUSY; |
1291 | goto edevreg; | |
e55222ef GL |
1292 | } |
1293 | } | |
1294 | ||
979ea1dd GL |
1295 | ret = v4l2_device_register(ici->v4l2_dev.dev, &ici->v4l2_dev); |
1296 | if (ret < 0) | |
1297 | goto edevreg; | |
eff505fa | 1298 | |
e55222ef GL |
1299 | list_add_tail(&ici->list, &hosts); |
1300 | mutex_unlock(&list_lock); | |
1301 | ||
e55222ef GL |
1302 | scan_add_host(ici); |
1303 | ||
1304 | return 0; | |
979ea1dd GL |
1305 | |
1306 | edevreg: | |
1307 | mutex_unlock(&list_lock); | |
1308 | return ret; | |
e55222ef GL |
1309 | } |
1310 | EXPORT_SYMBOL(soc_camera_host_register); | |
1311 | ||
1312 | /* Unregister all clients! */ | |
1313 | void soc_camera_host_unregister(struct soc_camera_host *ici) | |
1314 | { | |
1315 | struct soc_camera_device *icd; | |
1316 | ||
1317 | mutex_lock(&list_lock); | |
1318 | ||
1319 | list_del(&ici->list); | |
7dfff953 GL |
1320 | list_for_each_entry(icd, &devices, list) |
1321 | if (icd->iface == ici->nr && to_soc_camera_control(icd)) | |
1322 | soc_camera_remove(icd); | |
e55222ef GL |
1323 | |
1324 | mutex_unlock(&list_lock); | |
1325 | ||
979ea1dd | 1326 | v4l2_device_unregister(&ici->v4l2_dev); |
e55222ef GL |
1327 | } |
1328 | EXPORT_SYMBOL(soc_camera_host_unregister); | |
1329 | ||
1330 | /* Image capture device */ | |
40e2e092 | 1331 | static int soc_camera_device_register(struct soc_camera_device *icd) |
e55222ef GL |
1332 | { |
1333 | struct soc_camera_device *ix; | |
1334 | int num = -1, i; | |
1335 | ||
e55222ef GL |
1336 | for (i = 0; i < 256 && num < 0; i++) { |
1337 | num = i; | |
40e2e092 | 1338 | /* Check if this index is available on this interface */ |
e55222ef GL |
1339 | list_for_each_entry(ix, &devices, list) { |
1340 | if (ix->iface == icd->iface && ix->devnum == i) { | |
1341 | num = -1; | |
1342 | break; | |
1343 | } | |
1344 | } | |
1345 | } | |
1346 | ||
1347 | if (num < 0) | |
5d28d525 GL |
1348 | /* |
1349 | * ok, we have 256 cameras on this host... | |
1350 | * man, stay reasonable... | |
1351 | */ | |
e55222ef GL |
1352 | return -ENOMEM; |
1353 | ||
64ff9ba5 | 1354 | icd->devnum = num; |
64f5905e GL |
1355 | icd->use_count = 0; |
1356 | icd->host_priv = NULL; | |
1c3bb743 | 1357 | mutex_init(&icd->video_lock); |
e55222ef | 1358 | |
40e2e092 GL |
1359 | list_add_tail(&icd->list, &devices); |
1360 | ||
1361 | return 0; | |
e55222ef | 1362 | } |
e55222ef | 1363 | |
a399810c HV |
1364 | static const struct v4l2_ioctl_ops soc_camera_ioctl_ops = { |
1365 | .vidioc_querycap = soc_camera_querycap, | |
1366 | .vidioc_g_fmt_vid_cap = soc_camera_g_fmt_vid_cap, | |
1367 | .vidioc_enum_fmt_vid_cap = soc_camera_enum_fmt_vid_cap, | |
1368 | .vidioc_s_fmt_vid_cap = soc_camera_s_fmt_vid_cap, | |
1369 | .vidioc_enum_input = soc_camera_enum_input, | |
1370 | .vidioc_g_input = soc_camera_g_input, | |
1371 | .vidioc_s_input = soc_camera_s_input, | |
1372 | .vidioc_s_std = soc_camera_s_std, | |
ed5b65dc | 1373 | .vidioc_enum_framesizes = soc_camera_enum_fsizes, |
a399810c HV |
1374 | .vidioc_reqbufs = soc_camera_reqbufs, |
1375 | .vidioc_try_fmt_vid_cap = soc_camera_try_fmt_vid_cap, | |
1376 | .vidioc_querybuf = soc_camera_querybuf, | |
1377 | .vidioc_qbuf = soc_camera_qbuf, | |
1378 | .vidioc_dqbuf = soc_camera_dqbuf, | |
1379 | .vidioc_streamon = soc_camera_streamon, | |
1380 | .vidioc_streamoff = soc_camera_streamoff, | |
1381 | .vidioc_queryctrl = soc_camera_queryctrl, | |
1382 | .vidioc_g_ctrl = soc_camera_g_ctrl, | |
1383 | .vidioc_s_ctrl = soc_camera_s_ctrl, | |
1384 | .vidioc_cropcap = soc_camera_cropcap, | |
1385 | .vidioc_g_crop = soc_camera_g_crop, | |
1386 | .vidioc_s_crop = soc_camera_s_crop, | |
c9f6ef69 GL |
1387 | .vidioc_g_parm = soc_camera_g_parm, |
1388 | .vidioc_s_parm = soc_camera_s_parm, | |
a399810c HV |
1389 | .vidioc_g_chip_ident = soc_camera_g_chip_ident, |
1390 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
1391 | .vidioc_g_register = soc_camera_g_register, | |
1392 | .vidioc_s_register = soc_camera_s_register, | |
1393 | #endif | |
1394 | }; | |
1395 | ||
40e2e092 | 1396 | static int video_dev_create(struct soc_camera_device *icd) |
e55222ef | 1397 | { |
7dfff953 | 1398 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
40e2e092 | 1399 | struct video_device *vdev = video_device_alloc(); |
e55222ef | 1400 | |
e55222ef | 1401 | if (!vdev) |
40e2e092 | 1402 | return -ENOMEM; |
e55222ef GL |
1403 | |
1404 | strlcpy(vdev->name, ici->drv_name, sizeof(vdev->name)); | |
1c3bb743 | 1405 | |
7dfff953 | 1406 | vdev->parent = icd->pdev; |
e55222ef GL |
1407 | vdev->current_norm = V4L2_STD_UNKNOWN; |
1408 | vdev->fops = &soc_camera_fops; | |
a399810c | 1409 | vdev->ioctl_ops = &soc_camera_ioctl_ops; |
e55222ef | 1410 | vdev->release = video_device_release; |
40e2e092 | 1411 | vdev->tvnorms = V4L2_STD_UNKNOWN; |
7a05dfed | 1412 | vdev->lock = &icd->video_lock; |
e55222ef | 1413 | |
e55222ef GL |
1414 | icd->vdev = vdev; |
1415 | ||
1416 | return 0; | |
40e2e092 | 1417 | } |
e55222ef | 1418 | |
40e2e092 | 1419 | /* |
979ea1dd | 1420 | * Called from soc_camera_probe() above (with .video_lock held???) |
40e2e092 | 1421 | */ |
979ea1dd | 1422 | static int soc_camera_video_start(struct soc_camera_device *icd) |
40e2e092 | 1423 | { |
d364ee4f | 1424 | const struct device_type *type = icd->vdev->dev.type; |
979ea1dd | 1425 | int ret; |
40e2e092 | 1426 | |
7dfff953 | 1427 | if (!icd->parent) |
40e2e092 GL |
1428 | return -ENODEV; |
1429 | ||
1430 | if (!icd->ops || | |
40e2e092 GL |
1431 | !icd->ops->query_bus_param || |
1432 | !icd->ops->set_bus_param) | |
1433 | return -EINVAL; | |
1434 | ||
46b21094 | 1435 | ret = video_register_device(icd->vdev, VFL_TYPE_GRABBER, -1); |
979ea1dd | 1436 | if (ret < 0) { |
7dfff953 | 1437 | dev_err(icd->pdev, "video_register_device failed: %d\n", ret); |
979ea1dd GL |
1438 | return ret; |
1439 | } | |
40e2e092 | 1440 | |
4f9fb5ed MCC |
1441 | /* Restore device type, possibly set by the subdevice driver */ |
1442 | icd->vdev->dev.type = type; | |
1443 | ||
979ea1dd | 1444 | return 0; |
e55222ef | 1445 | } |
e55222ef | 1446 | |
40e2e092 | 1447 | static int __devinit soc_camera_pdrv_probe(struct platform_device *pdev) |
0fd327bd | 1448 | { |
40e2e092 GL |
1449 | struct soc_camera_link *icl = pdev->dev.platform_data; |
1450 | struct soc_camera_device *icd; | |
c41debaf | 1451 | int ret; |
0fd327bd | 1452 | |
40e2e092 GL |
1453 | if (!icl) |
1454 | return -EINVAL; | |
0fd327bd | 1455 | |
40e2e092 GL |
1456 | icd = kzalloc(sizeof(*icd), GFP_KERNEL); |
1457 | if (!icd) | |
1458 | return -ENOMEM; | |
0fd327bd | 1459 | |
40e2e092 | 1460 | icd->iface = icl->bus_id; |
7dfff953 | 1461 | icd->link = icl; |
979ea1dd | 1462 | icd->pdev = &pdev->dev; |
40e2e092 | 1463 | platform_set_drvdata(pdev, icd); |
0fd327bd | 1464 | |
40e2e092 GL |
1465 | ret = soc_camera_device_register(icd); |
1466 | if (ret < 0) | |
1467 | goto escdevreg; | |
0fd327bd | 1468 | |
6a6c8786 GL |
1469 | icd->user_width = DEFAULT_WIDTH; |
1470 | icd->user_height = DEFAULT_HEIGHT; | |
1471 | ||
40e2e092 | 1472 | return 0; |
0fd327bd | 1473 | |
40e2e092 GL |
1474 | escdevreg: |
1475 | kfree(icd); | |
0fd327bd | 1476 | |
40e2e092 | 1477 | return ret; |
c41debaf | 1478 | } |
0fd327bd | 1479 | |
5d28d525 GL |
1480 | /* |
1481 | * Only called on rmmod for each platform device, since they are not | |
40e2e092 | 1482 | * hot-pluggable. Now we know, that all our users - hosts and devices have |
5d28d525 GL |
1483 | * been unloaded already |
1484 | */ | |
40e2e092 | 1485 | static int __devexit soc_camera_pdrv_remove(struct platform_device *pdev) |
c41debaf | 1486 | { |
40e2e092 | 1487 | struct soc_camera_device *icd = platform_get_drvdata(pdev); |
c41debaf | 1488 | |
40e2e092 | 1489 | if (!icd) |
c41debaf GL |
1490 | return -EINVAL; |
1491 | ||
7dfff953 | 1492 | list_del(&icd->list); |
c41debaf | 1493 | |
40e2e092 | 1494 | kfree(icd); |
c41debaf | 1495 | |
0fd327bd GL |
1496 | return 0; |
1497 | } | |
1498 | ||
1499 | static struct platform_driver __refdata soc_camera_pdrv = { | |
40e2e092 GL |
1500 | .remove = __devexit_p(soc_camera_pdrv_remove), |
1501 | .driver = { | |
1502 | .name = "soc-camera-pdrv", | |
1503 | .owner = THIS_MODULE, | |
0fd327bd GL |
1504 | }, |
1505 | }; | |
1506 | ||
e55222ef GL |
1507 | static int __init soc_camera_init(void) |
1508 | { | |
7dfff953 | 1509 | return platform_driver_probe(&soc_camera_pdrv, soc_camera_pdrv_probe); |
e55222ef GL |
1510 | } |
1511 | ||
1512 | static void __exit soc_camera_exit(void) | |
1513 | { | |
0fd327bd | 1514 | platform_driver_unregister(&soc_camera_pdrv); |
e55222ef GL |
1515 | } |
1516 | ||
1517 | module_init(soc_camera_init); | |
1518 | module_exit(soc_camera_exit); | |
1519 | ||
1520 | MODULE_DESCRIPTION("Image capture bus driver"); | |
1521 | MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>"); | |
1522 | MODULE_LICENSE("GPL"); | |
0fd327bd | 1523 | MODULE_ALIAS("platform:soc-camera-pdrv"); |