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 | |
3dcc731a GL |
53 | static int soc_camera_power_on(struct soc_camera_device *icd, |
54 | struct soc_camera_link *icl) | |
96e442c1 | 55 | { |
7b9d8c3c GL |
56 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
57 | int ret = regulator_bulk_enable(icl->num_regulators, | |
58 | icl->regulators); | |
3dcc731a GL |
59 | if (ret < 0) { |
60 | dev_err(icd->pdev, "Cannot enable regulators\n"); | |
61 | return ret; | |
62 | } | |
96e442c1 | 63 | |
3dcc731a | 64 | if (icl->power) { |
2744782e | 65 | ret = icl->power(icd->control, 1); |
96e442c1 | 66 | if (ret < 0) { |
7dfff953 | 67 | dev_err(icd->pdev, |
96e442c1 | 68 | "Platform failed to power-on the camera.\n"); |
7b9d8c3c | 69 | goto elinkpwr; |
96e442c1 | 70 | } |
3dcc731a GL |
71 | } |
72 | ||
7b9d8c3c GL |
73 | ret = v4l2_subdev_call(sd, core, s_power, 1); |
74 | if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) | |
75 | goto esdpwr; | |
76 | ||
77 | return 0; | |
78 | ||
79 | esdpwr: | |
80 | if (icl->power) | |
2744782e | 81 | icl->power(icd->control, 0); |
7b9d8c3c GL |
82 | elinkpwr: |
83 | regulator_bulk_disable(icl->num_regulators, | |
84 | icl->regulators); | |
3dcc731a GL |
85 | return ret; |
86 | } | |
87 | ||
88 | static int soc_camera_power_off(struct soc_camera_device *icd, | |
89 | struct soc_camera_link *icl) | |
90 | { | |
7b9d8c3c GL |
91 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
92 | int ret = v4l2_subdev_call(sd, core, s_power, 0); | |
93 | ||
94 | if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) | |
95 | return ret; | |
3dcc731a GL |
96 | |
97 | if (icl->power) { | |
2744782e | 98 | ret = icl->power(icd->control, 0); |
96e442c1 | 99 | if (ret < 0) { |
7dfff953 | 100 | dev_err(icd->pdev, |
96e442c1 AP |
101 | "Platform failed to power-off the camera.\n"); |
102 | return ret; | |
103 | } | |
96e442c1 AP |
104 | } |
105 | ||
3dcc731a GL |
106 | ret = regulator_bulk_disable(icl->num_regulators, |
107 | icl->regulators); | |
108 | if (ret < 0) | |
109 | dev_err(icd->pdev, "Cannot disable regulators\n"); | |
110 | ||
111 | return ret; | |
96e442c1 AP |
112 | } |
113 | ||
c2786ad2 GL |
114 | const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc( |
115 | struct soc_camera_device *icd, unsigned int fourcc) | |
116 | { | |
117 | unsigned int i; | |
118 | ||
119 | for (i = 0; i < icd->num_user_formats; i++) | |
120 | if (icd->user_formats[i].host_fmt->fourcc == fourcc) | |
121 | return icd->user_formats + i; | |
122 | return NULL; | |
123 | } | |
124 | EXPORT_SYMBOL(soc_camera_xlate_by_fourcc); | |
125 | ||
32c69fcc GL |
126 | /** |
127 | * soc_camera_apply_board_flags() - apply platform SOCAM_SENSOR_INVERT_* flags | |
128 | * @icl: camera platform parameters | |
129 | * @cfg: media bus configuration | |
130 | * @return: resulting flags | |
131 | */ | |
132 | unsigned long soc_camera_apply_board_flags(struct soc_camera_link *icl, | |
133 | const struct v4l2_mbus_config *cfg) | |
134 | { | |
135 | unsigned long f, flags = cfg->flags; | |
136 | ||
137 | /* If only one of the two polarities is supported, switch to the opposite */ | |
138 | if (icl->flags & SOCAM_SENSOR_INVERT_HSYNC) { | |
139 | f = flags & (V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW); | |
140 | if (f == V4L2_MBUS_HSYNC_ACTIVE_HIGH || f == V4L2_MBUS_HSYNC_ACTIVE_LOW) | |
141 | flags ^= V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW; | |
142 | } | |
143 | ||
144 | if (icl->flags & SOCAM_SENSOR_INVERT_VSYNC) { | |
145 | f = flags & (V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW); | |
146 | if (f == V4L2_MBUS_VSYNC_ACTIVE_HIGH || f == V4L2_MBUS_VSYNC_ACTIVE_LOW) | |
147 | flags ^= V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW; | |
148 | } | |
149 | ||
150 | if (icl->flags & SOCAM_SENSOR_INVERT_PCLK) { | |
151 | f = flags & (V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING); | |
152 | if (f == V4L2_MBUS_PCLK_SAMPLE_RISING || f == V4L2_MBUS_PCLK_SAMPLE_FALLING) | |
153 | flags ^= V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING; | |
154 | } | |
155 | ||
156 | return flags; | |
157 | } | |
158 | EXPORT_SYMBOL(soc_camera_apply_board_flags); | |
159 | ||
dca6b6d1 SA |
160 | #define pixfmtstr(x) (x) & 0xff, ((x) >> 8) & 0xff, ((x) >> 16) & 0xff, \ |
161 | ((x) >> 24) & 0xff | |
162 | ||
163 | static int soc_camera_try_fmt(struct soc_camera_device *icd, | |
164 | struct v4l2_format *f) | |
165 | { | |
7dfff953 | 166 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
bed8d803 | 167 | const struct soc_camera_format_xlate *xlate; |
dca6b6d1 SA |
168 | struct v4l2_pix_format *pix = &f->fmt.pix; |
169 | int ret; | |
170 | ||
7dfff953 | 171 | dev_dbg(icd->pdev, "TRY_FMT(%c%c%c%c, %ux%u)\n", |
dca6b6d1 SA |
172 | pixfmtstr(pix->pixelformat), pix->width, pix->height); |
173 | ||
914f05c8 LP |
174 | if (!(ici->capabilities & SOCAM_HOST_CAP_STRIDE)) { |
175 | pix->bytesperline = 0; | |
176 | pix->sizeimage = 0; | |
177 | } | |
dca6b6d1 SA |
178 | |
179 | ret = ici->ops->try_fmt(icd, f); | |
180 | if (ret < 0) | |
181 | return ret; | |
182 | ||
bed8d803 LP |
183 | xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat); |
184 | if (!xlate) | |
185 | return -EINVAL; | |
dca6b6d1 | 186 | |
bed8d803 LP |
187 | ret = soc_mbus_bytes_per_line(pix->width, xlate->host_fmt); |
188 | if (ret < 0) | |
189 | return ret; | |
dca6b6d1 | 190 | |
bed8d803 LP |
191 | pix->bytesperline = max_t(u32, pix->bytesperline, ret); |
192 | ||
193 | ret = soc_mbus_image_size(xlate->host_fmt, pix->bytesperline, | |
194 | pix->height); | |
195 | if (ret < 0) | |
196 | return ret; | |
197 | ||
198 | pix->sizeimage = max_t(u32, pix->sizeimage, ret); | |
dca6b6d1 SA |
199 | |
200 | return 0; | |
201 | } | |
202 | ||
72937890 | 203 | static int soc_camera_try_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 204 | struct v4l2_format *f) |
e55222ef | 205 | { |
57bee29d | 206 | struct soc_camera_device *icd = file->private_data; |
e55222ef GL |
207 | |
208 | WARN_ON(priv != file->private_data); | |
209 | ||
d366d4a0 GL |
210 | /* Only single-plane capture is supported so far */ |
211 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
212 | return -EINVAL; | |
213 | ||
ad5f2e85 | 214 | /* limit format to hardware capabilities */ |
dca6b6d1 | 215 | return soc_camera_try_fmt(icd, f); |
e55222ef GL |
216 | } |
217 | ||
218 | static int soc_camera_enum_input(struct file *file, void *priv, | |
219 | struct v4l2_input *inp) | |
220 | { | |
221 | if (inp->index != 0) | |
222 | return -EINVAL; | |
223 | ||
8318a64b GL |
224 | /* default is camera */ |
225 | inp->type = V4L2_INPUT_TYPE_CAMERA; | |
226 | inp->std = V4L2_STD_UNKNOWN; | |
227 | strcpy(inp->name, "Camera"); | |
e55222ef | 228 | |
8318a64b | 229 | return 0; |
e55222ef GL |
230 | } |
231 | ||
232 | static int soc_camera_g_input(struct file *file, void *priv, unsigned int *i) | |
233 | { | |
234 | *i = 0; | |
235 | ||
236 | return 0; | |
237 | } | |
238 | ||
239 | static int soc_camera_s_input(struct file *file, void *priv, unsigned int i) | |
240 | { | |
241 | if (i > 0) | |
242 | return -EINVAL; | |
243 | ||
244 | return 0; | |
245 | } | |
246 | ||
247 | static int soc_camera_s_std(struct file *file, void *priv, v4l2_std_id *a) | |
248 | { | |
57bee29d | 249 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 250 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
513791ab | 251 | |
c9c1f1c0 | 252 | return v4l2_subdev_call(sd, core, s_std, *a); |
e55222ef GL |
253 | } |
254 | ||
2f0babb7 GL |
255 | static int soc_camera_g_std(struct file *file, void *priv, v4l2_std_id *a) |
256 | { | |
257 | struct soc_camera_device *icd = file->private_data; | |
258 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
259 | ||
260 | return v4l2_subdev_call(sd, core, g_std, a); | |
261 | } | |
262 | ||
ad3537b5 | 263 | static int soc_camera_enum_framesizes(struct file *file, void *fh, |
ed5b65dc QX |
264 | struct v4l2_frmsizeenum *fsize) |
265 | { | |
266 | struct soc_camera_device *icd = file->private_data; | |
7dfff953 | 267 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
ed5b65dc | 268 | |
ad3537b5 | 269 | return ici->ops->enum_framesizes(icd, fsize); |
ed5b65dc QX |
270 | } |
271 | ||
e55222ef GL |
272 | static int soc_camera_reqbufs(struct file *file, void *priv, |
273 | struct v4l2_requestbuffers *p) | |
274 | { | |
275 | int ret; | |
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 | ||
57bee29d GL |
281 | if (icd->streamer && icd->streamer != file) |
282 | return -EBUSY; | |
283 | ||
592c2aba GL |
284 | if (ici->ops->init_videobuf) { |
285 | ret = videobuf_reqbufs(&icd->vb_vidq, p); | |
286 | if (ret < 0) | |
287 | return ret; | |
288 | ||
289 | ret = ici->ops->reqbufs(icd, p); | |
290 | } else { | |
291 | ret = vb2_reqbufs(&icd->vb2_vidq, p); | |
292 | } | |
e55222ef | 293 | |
57bee29d GL |
294 | if (!ret && !icd->streamer) |
295 | icd->streamer = file; | |
296 | ||
297 | return ret; | |
e55222ef GL |
298 | } |
299 | ||
300 | static int soc_camera_querybuf(struct file *file, void *priv, | |
301 | struct v4l2_buffer *p) | |
302 | { | |
57bee29d | 303 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 304 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
305 | |
306 | WARN_ON(priv != file->private_data); | |
307 | ||
592c2aba GL |
308 | if (ici->ops->init_videobuf) |
309 | return videobuf_querybuf(&icd->vb_vidq, p); | |
310 | else | |
311 | return vb2_querybuf(&icd->vb2_vidq, p); | |
e55222ef GL |
312 | } |
313 | ||
314 | static int soc_camera_qbuf(struct file *file, void *priv, | |
315 | struct v4l2_buffer *p) | |
316 | { | |
57bee29d | 317 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 318 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
319 | |
320 | WARN_ON(priv != file->private_data); | |
321 | ||
57bee29d GL |
322 | if (icd->streamer != file) |
323 | return -EBUSY; | |
324 | ||
592c2aba GL |
325 | if (ici->ops->init_videobuf) |
326 | return videobuf_qbuf(&icd->vb_vidq, p); | |
327 | else | |
328 | return vb2_qbuf(&icd->vb2_vidq, p); | |
e55222ef GL |
329 | } |
330 | ||
331 | static int soc_camera_dqbuf(struct file *file, void *priv, | |
332 | struct v4l2_buffer *p) | |
333 | { | |
57bee29d | 334 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 335 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
336 | |
337 | WARN_ON(priv != file->private_data); | |
338 | ||
57bee29d GL |
339 | if (icd->streamer != file) |
340 | return -EBUSY; | |
341 | ||
592c2aba GL |
342 | if (ici->ops->init_videobuf) |
343 | return videobuf_dqbuf(&icd->vb_vidq, p, file->f_flags & O_NONBLOCK); | |
344 | else | |
345 | return vb2_dqbuf(&icd->vb2_vidq, p, file->f_flags & O_NONBLOCK); | |
e55222ef GL |
346 | } |
347 | ||
7ae77ee9 GL |
348 | static int soc_camera_create_bufs(struct file *file, void *priv, |
349 | struct v4l2_create_buffers *create) | |
350 | { | |
351 | struct soc_camera_device *icd = file->private_data; | |
352 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
353 | ||
354 | /* videobuf2 only */ | |
355 | if (ici->ops->init_videobuf) | |
356 | return -EINVAL; | |
357 | else | |
358 | return vb2_create_bufs(&icd->vb2_vidq, create); | |
359 | } | |
360 | ||
361 | static int soc_camera_prepare_buf(struct file *file, void *priv, | |
362 | struct v4l2_buffer *b) | |
363 | { | |
364 | struct soc_camera_device *icd = file->private_data; | |
365 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
366 | ||
367 | /* videobuf2 only */ | |
368 | if (ici->ops->init_videobuf) | |
369 | return -EINVAL; | |
370 | else | |
371 | return vb2_prepare_buf(&icd->vb2_vidq, b); | |
372 | } | |
373 | ||
40e2e092 | 374 | /* Always entered with .video_lock held */ |
c2786ad2 GL |
375 | static int soc_camera_init_user_formats(struct soc_camera_device *icd) |
376 | { | |
760697be | 377 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
7dfff953 | 378 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
3805f201 HV |
379 | unsigned int i, fmts = 0, raw_fmts = 0; |
380 | int ret; | |
760697be GL |
381 | enum v4l2_mbus_pixelcode code; |
382 | ||
383 | while (!v4l2_subdev_call(sd, video, enum_mbus_fmt, raw_fmts, &code)) | |
384 | raw_fmts++; | |
c2786ad2 GL |
385 | |
386 | if (!ici->ops->get_formats) | |
387 | /* | |
388 | * Fallback mode - the host will have to serve all | |
389 | * sensor-provided formats one-to-one to the user | |
390 | */ | |
760697be | 391 | fmts = raw_fmts; |
c2786ad2 GL |
392 | else |
393 | /* | |
394 | * First pass - only count formats this host-sensor | |
395 | * configuration can provide | |
396 | */ | |
760697be | 397 | for (i = 0; i < raw_fmts; i++) { |
fa48984e GL |
398 | ret = ici->ops->get_formats(icd, i, NULL); |
399 | if (ret < 0) | |
400 | return ret; | |
401 | fmts += ret; | |
402 | } | |
c2786ad2 GL |
403 | |
404 | if (!fmts) | |
405 | return -ENXIO; | |
406 | ||
407 | icd->user_formats = | |
408 | vmalloc(fmts * sizeof(struct soc_camera_format_xlate)); | |
409 | if (!icd->user_formats) | |
410 | return -ENOMEM; | |
411 | ||
7dfff953 | 412 | dev_dbg(icd->pdev, "Found %d supported formats.\n", fmts); |
c2786ad2 GL |
413 | |
414 | /* Second pass - actually fill data formats */ | |
14df2cce | 415 | fmts = 0; |
760697be | 416 | for (i = 0; i < raw_fmts; i++) |
c2786ad2 | 417 | if (!ici->ops->get_formats) { |
760697be | 418 | v4l2_subdev_call(sd, video, enum_mbus_fmt, i, &code); |
d2dcad49 | 419 | icd->user_formats[fmts].host_fmt = |
760697be | 420 | soc_mbus_get_fmtdesc(code); |
d2dcad49 GL |
421 | if (icd->user_formats[fmts].host_fmt) |
422 | icd->user_formats[fmts++].code = code; | |
c2786ad2 | 423 | } else { |
fa48984e GL |
424 | ret = ici->ops->get_formats(icd, i, |
425 | &icd->user_formats[fmts]); | |
426 | if (ret < 0) | |
427 | goto egfmt; | |
428 | fmts += ret; | |
c2786ad2 GL |
429 | } |
430 | ||
d2dcad49 | 431 | icd->num_user_formats = fmts; |
760697be | 432 | icd->current_fmt = &icd->user_formats[0]; |
c2786ad2 GL |
433 | |
434 | return 0; | |
fa48984e GL |
435 | |
436 | egfmt: | |
fa48984e GL |
437 | vfree(icd->user_formats); |
438 | return ret; | |
c2786ad2 GL |
439 | } |
440 | ||
40e2e092 | 441 | /* Always entered with .video_lock held */ |
c2786ad2 GL |
442 | static void soc_camera_free_user_formats(struct soc_camera_device *icd) |
443 | { | |
7dfff953 | 444 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
fa48984e GL |
445 | |
446 | if (ici->ops->put_formats) | |
447 | ici->ops->put_formats(icd); | |
40e2e092 | 448 | icd->current_fmt = NULL; |
fa48984e | 449 | icd->num_user_formats = 0; |
c2786ad2 | 450 | vfree(icd->user_formats); |
40e2e092 | 451 | icd->user_formats = NULL; |
c2786ad2 GL |
452 | } |
453 | ||
760697be | 454 | /* Called with .vb_lock held, or from the first open(2), see comment there */ |
57bee29d | 455 | static int soc_camera_set_fmt(struct soc_camera_device *icd, |
df2ed070 GL |
456 | struct v4l2_format *f) |
457 | { | |
7dfff953 | 458 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
df2ed070 GL |
459 | struct v4l2_pix_format *pix = &f->fmt.pix; |
460 | int ret; | |
461 | ||
7dfff953 | 462 | dev_dbg(icd->pdev, "S_FMT(%c%c%c%c, %ux%u)\n", |
6a6c8786 GL |
463 | pixfmtstr(pix->pixelformat), pix->width, pix->height); |
464 | ||
df2ed070 | 465 | /* We always call try_fmt() before set_fmt() or set_crop() */ |
dca6b6d1 | 466 | ret = soc_camera_try_fmt(icd, f); |
df2ed070 GL |
467 | if (ret < 0) |
468 | return ret; | |
469 | ||
470 | ret = ici->ops->set_fmt(icd, f); | |
471 | if (ret < 0) { | |
472 | return ret; | |
473 | } else if (!icd->current_fmt || | |
760697be | 474 | icd->current_fmt->host_fmt->fourcc != pix->pixelformat) { |
7dfff953 | 475 | dev_err(icd->pdev, |
df2ed070 GL |
476 | "Host driver hasn't set up current format correctly!\n"); |
477 | return -EINVAL; | |
478 | } | |
479 | ||
6a6c8786 GL |
480 | icd->user_width = pix->width; |
481 | icd->user_height = pix->height; | |
0e4c180d SA |
482 | icd->bytesperline = pix->bytesperline; |
483 | icd->sizeimage = pix->sizeimage; | |
760697be | 484 | icd->colorspace = pix->colorspace; |
592c2aba GL |
485 | icd->field = pix->field; |
486 | if (ici->ops->init_videobuf) | |
487 | icd->vb_vidq.field = pix->field; | |
025c18a1 | 488 | |
7dfff953 | 489 | dev_dbg(icd->pdev, "set width: %d height: %d\n", |
6a6c8786 | 490 | icd->user_width, icd->user_height); |
df2ed070 GL |
491 | |
492 | /* set physical bus parameters */ | |
8843d119 | 493 | return ici->ops->set_bus_param(icd); |
df2ed070 GL |
494 | } |
495 | ||
bec43661 | 496 | static int soc_camera_open(struct file *file) |
e55222ef | 497 | { |
979ea1dd | 498 | struct video_device *vdev = video_devdata(file); |
7dfff953 | 499 | struct soc_camera_device *icd = dev_get_drvdata(vdev->parent); |
979ea1dd | 500 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
9dc4e48f | 501 | struct soc_camera_host *ici; |
e55222ef GL |
502 | int ret; |
503 | ||
b0050e41 | 504 | if (!to_soc_camera_control(icd)) |
40e2e092 GL |
505 | /* No device driver attached */ |
506 | return -ENODEV; | |
507 | ||
7dfff953 | 508 | ici = to_soc_camera_host(icd->parent); |
e55222ef | 509 | |
b8d9904c | 510 | if (!try_module_get(ici->ops->owner)) { |
7dfff953 | 511 | dev_err(icd->pdev, "Couldn't lock capture bus driver.\n"); |
57bee29d | 512 | return -EINVAL; |
e55222ef GL |
513 | } |
514 | ||
1a0063a9 GL |
515 | icd->use_count++; |
516 | ||
9dc4e48f GL |
517 | /* Now we really have to activate the camera */ |
518 | if (icd->use_count == 1) { | |
025c18a1 | 519 | /* Restore parameters before the last close() per V4L2 API */ |
df2ed070 GL |
520 | struct v4l2_format f = { |
521 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
522 | .fmt.pix = { | |
6a6c8786 GL |
523 | .width = icd->user_width, |
524 | .height = icd->user_height, | |
025c18a1 | 525 | .field = icd->field, |
760697be GL |
526 | .colorspace = icd->colorspace, |
527 | .pixelformat = | |
528 | icd->current_fmt->host_fmt->fourcc, | |
df2ed070 GL |
529 | }, |
530 | }; | |
531 | ||
979ea1dd GL |
532 | /* The camera could have been already on, try to reset */ |
533 | if (icl->reset) | |
534 | icl->reset(icd->pdev); | |
535 | ||
2f9a0c88 GL |
536 | /* Don't mess with the host during probe */ |
537 | mutex_lock(&ici->host_lock); | |
b8d9904c | 538 | ret = ici->ops->add(icd); |
2f9a0c88 | 539 | mutex_unlock(&ici->host_lock); |
9dc4e48f | 540 | if (ret < 0) { |
7dfff953 | 541 | dev_err(icd->pdev, "Couldn't activate the camera: %d\n", ret); |
9dc4e48f GL |
542 | goto eiciadd; |
543 | } | |
df2ed070 | 544 | |
7705b6d8 GL |
545 | ret = soc_camera_power_on(icd, icl); |
546 | if (ret < 0) | |
547 | goto epower; | |
548 | ||
4f9fb5ed MCC |
549 | pm_runtime_enable(&icd->vdev->dev); |
550 | ret = pm_runtime_resume(&icd->vdev->dev); | |
551 | if (ret < 0 && ret != -ENOSYS) | |
552 | goto eresume; | |
553 | ||
760697be GL |
554 | /* |
555 | * Try to configure with default parameters. Notice: this is the | |
556 | * very first open, so, we cannot race against other calls, | |
557 | * apart from someone else calling open() simultaneously, but | |
558 | * .video_lock is protecting us against it. | |
559 | */ | |
57bee29d | 560 | ret = soc_camera_set_fmt(icd, &f); |
df2ed070 GL |
561 | if (ret < 0) |
562 | goto esfmt; | |
24d8c029 | 563 | |
592c2aba GL |
564 | if (ici->ops->init_videobuf) { |
565 | ici->ops->init_videobuf(&icd->vb_vidq, icd); | |
566 | } else { | |
567 | ret = ici->ops->init_videobuf2(&icd->vb2_vidq, icd); | |
568 | if (ret < 0) | |
569 | goto einitvb; | |
570 | } | |
ee02da64 | 571 | v4l2_ctrl_handler_setup(&icd->ctrl_handler); |
9dc4e48f GL |
572 | } |
573 | ||
57bee29d | 574 | file->private_data = icd; |
7dfff953 | 575 | dev_dbg(icd->pdev, "camera device open\n"); |
e55222ef | 576 | |
e55222ef GL |
577 | return 0; |
578 | ||
df2ed070 | 579 | /* |
4f9fb5ed | 580 | * First four errors are entered with the .video_lock held |
df2ed070 GL |
581 | * and use_count == 1 |
582 | */ | |
592c2aba | 583 | einitvb: |
df2ed070 | 584 | esfmt: |
4f9fb5ed MCC |
585 | pm_runtime_disable(&icd->vdev->dev); |
586 | eresume: | |
3dcc731a | 587 | soc_camera_power_off(icd, icl); |
979ea1dd | 588 | epower: |
7705b6d8 GL |
589 | ici->ops->remove(icd); |
590 | eiciadd: | |
c2786ad2 | 591 | icd->use_count--; |
b8d9904c | 592 | module_put(ici->ops->owner); |
57bee29d | 593 | |
e55222ef GL |
594 | return ret; |
595 | } | |
596 | ||
bec43661 | 597 | static int soc_camera_close(struct file *file) |
e55222ef | 598 | { |
57bee29d | 599 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 600 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef | 601 | |
9dc4e48f | 602 | icd->use_count--; |
40e2e092 | 603 | if (!icd->use_count) { |
979ea1dd GL |
604 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
605 | ||
4f9fb5ed MCC |
606 | pm_runtime_suspend(&icd->vdev->dev); |
607 | pm_runtime_disable(&icd->vdev->dev); | |
608 | ||
592c2aba GL |
609 | if (ici->ops->init_videobuf2) |
610 | vb2_queue_release(&icd->vb2_vidq); | |
48ecf9fe | 611 | ici->ops->remove(icd); |
4f9fb5ed | 612 | |
3dcc731a | 613 | soc_camera_power_off(icd, icl); |
40e2e092 | 614 | } |
025c18a1 | 615 | |
57bee29d GL |
616 | if (icd->streamer == file) |
617 | icd->streamer = NULL; | |
618 | ||
b8d9904c | 619 | module_put(ici->ops->owner); |
9dc4e48f | 620 | |
7dfff953 | 621 | dev_dbg(icd->pdev, "camera device close\n"); |
e55222ef GL |
622 | |
623 | return 0; | |
624 | } | |
625 | ||
aba360d8 | 626 | static ssize_t soc_camera_read(struct file *file, char __user *buf, |
abe4c471 | 627 | size_t count, loff_t *ppos) |
e55222ef | 628 | { |
57bee29d | 629 | struct soc_camera_device *icd = file->private_data; |
e55222ef GL |
630 | int err = -EINVAL; |
631 | ||
7dfff953 | 632 | dev_err(icd->pdev, "camera device read not implemented\n"); |
e55222ef GL |
633 | |
634 | return err; | |
635 | } | |
636 | ||
637 | static int soc_camera_mmap(struct file *file, struct vm_area_struct *vma) | |
638 | { | |
57bee29d | 639 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 640 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
641 | int err; |
642 | ||
7dfff953 | 643 | dev_dbg(icd->pdev, "mmap called, vma=0x%08lx\n", (unsigned long)vma); |
e55222ef | 644 | |
57bee29d GL |
645 | if (icd->streamer != file) |
646 | return -EBUSY; | |
647 | ||
592c2aba GL |
648 | if (ici->ops->init_videobuf) |
649 | err = videobuf_mmap_mapper(&icd->vb_vidq, vma); | |
650 | else | |
651 | err = vb2_mmap(&icd->vb2_vidq, vma); | |
e55222ef | 652 | |
7dfff953 | 653 | dev_dbg(icd->pdev, "vma start=0x%08lx, size=%ld, ret=%d\n", |
e55222ef GL |
654 | (unsigned long)vma->vm_start, |
655 | (unsigned long)vma->vm_end - (unsigned long)vma->vm_start, | |
656 | err); | |
657 | ||
658 | return err; | |
659 | } | |
660 | ||
661 | static unsigned int soc_camera_poll(struct file *file, poll_table *pt) | |
662 | { | |
57bee29d | 663 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 664 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef | 665 | |
57bee29d GL |
666 | if (icd->streamer != file) |
667 | return -EBUSY; | |
668 | ||
592c2aba | 669 | if (ici->ops->init_videobuf && list_empty(&icd->vb_vidq.stream)) { |
7dfff953 | 670 | dev_err(icd->pdev, "Trying to poll with no queued buffers!\n"); |
e55222ef GL |
671 | return POLLERR; |
672 | } | |
673 | ||
b8d9904c | 674 | return ici->ops->poll(file, pt); |
e55222ef GL |
675 | } |
676 | ||
592c2aba GL |
677 | void soc_camera_lock(struct vb2_queue *vq) |
678 | { | |
679 | struct soc_camera_device *icd = vb2_get_drv_priv(vq); | |
680 | mutex_lock(&icd->video_lock); | |
681 | } | |
682 | EXPORT_SYMBOL(soc_camera_lock); | |
683 | ||
684 | void soc_camera_unlock(struct vb2_queue *vq) | |
685 | { | |
686 | struct soc_camera_device *icd = vb2_get_drv_priv(vq); | |
687 | mutex_unlock(&icd->video_lock); | |
688 | } | |
689 | EXPORT_SYMBOL(soc_camera_unlock); | |
690 | ||
bec43661 | 691 | static struct v4l2_file_operations soc_camera_fops = { |
e55222ef GL |
692 | .owner = THIS_MODULE, |
693 | .open = soc_camera_open, | |
694 | .release = soc_camera_close, | |
b6a633c1 | 695 | .unlocked_ioctl = video_ioctl2, |
e55222ef GL |
696 | .read = soc_camera_read, |
697 | .mmap = soc_camera_mmap, | |
698 | .poll = soc_camera_poll, | |
e55222ef GL |
699 | }; |
700 | ||
72937890 | 701 | static int soc_camera_s_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; |
e55222ef | 705 | int ret; |
e55222ef GL |
706 | |
707 | WARN_ON(priv != file->private_data); | |
708 | ||
d366d4a0 | 709 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
7dfff953 | 710 | dev_warn(icd->pdev, "Wrong buf-type %d\n", f->type); |
d366d4a0 GL |
711 | return -EINVAL; |
712 | } | |
713 | ||
57bee29d GL |
714 | if (icd->streamer && icd->streamer != file) |
715 | return -EBUSY; | |
1c3bb743 | 716 | |
7dfff953 GL |
717 | if (is_streaming(to_soc_camera_host(icd->parent), icd)) { |
718 | dev_err(icd->pdev, "S_FMT denied: queue initialised\n"); | |
b6a633c1 | 719 | return -EBUSY; |
1c3bb743 GL |
720 | } |
721 | ||
57bee29d GL |
722 | ret = soc_camera_set_fmt(icd, f); |
723 | ||
724 | if (!ret && !icd->streamer) | |
725 | icd->streamer = file; | |
1c3bb743 | 726 | |
1c3bb743 | 727 | return ret; |
e55222ef GL |
728 | } |
729 | ||
72937890 | 730 | static int soc_camera_enum_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 731 | struct v4l2_fmtdesc *f) |
e55222ef | 732 | { |
57bee29d | 733 | struct soc_camera_device *icd = file->private_data; |
760697be | 734 | const struct soc_mbus_pixelfmt *format; |
e55222ef GL |
735 | |
736 | WARN_ON(priv != file->private_data); | |
737 | ||
c2786ad2 | 738 | if (f->index >= icd->num_user_formats) |
e55222ef GL |
739 | return -EINVAL; |
740 | ||
c2786ad2 | 741 | format = icd->user_formats[f->index].host_fmt; |
e55222ef | 742 | |
760697be GL |
743 | if (format->name) |
744 | strlcpy(f->description, format->name, sizeof(f->description)); | |
e55222ef GL |
745 | f->pixelformat = format->fourcc; |
746 | return 0; | |
747 | } | |
748 | ||
72937890 | 749 | static int soc_camera_g_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 750 | struct v4l2_format *f) |
e55222ef | 751 | { |
57bee29d | 752 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 753 | struct v4l2_pix_format *pix = &f->fmt.pix; |
e55222ef GL |
754 | |
755 | WARN_ON(priv != file->private_data); | |
756 | ||
d366d4a0 GL |
757 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
758 | return -EINVAL; | |
759 | ||
6a6c8786 GL |
760 | pix->width = icd->user_width; |
761 | pix->height = icd->user_height; | |
0e4c180d SA |
762 | pix->bytesperline = icd->bytesperline; |
763 | pix->sizeimage = icd->sizeimage; | |
592c2aba | 764 | pix->field = icd->field; |
760697be | 765 | pix->pixelformat = icd->current_fmt->host_fmt->fourcc; |
760697be | 766 | pix->colorspace = icd->colorspace; |
7dfff953 | 767 | dev_dbg(icd->pdev, "current_fmt->fourcc: 0x%08x\n", |
760697be | 768 | icd->current_fmt->host_fmt->fourcc); |
e55222ef GL |
769 | return 0; |
770 | } | |
771 | ||
772 | static int soc_camera_querycap(struct file *file, void *priv, | |
773 | struct v4l2_capability *cap) | |
774 | { | |
57bee29d | 775 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 776 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
777 | |
778 | WARN_ON(priv != file->private_data); | |
779 | ||
780 | strlcpy(cap->driver, ici->drv_name, sizeof(cap->driver)); | |
b8d9904c | 781 | return ici->ops->querycap(ici, cap); |
e55222ef GL |
782 | } |
783 | ||
784 | static int soc_camera_streamon(struct file *file, void *priv, | |
785 | enum v4l2_buf_type i) | |
786 | { | |
57bee29d | 787 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 788 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
c9c1f1c0 | 789 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
1c3bb743 | 790 | int ret; |
e55222ef GL |
791 | |
792 | WARN_ON(priv != file->private_data); | |
793 | ||
e55222ef GL |
794 | if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
795 | return -EINVAL; | |
796 | ||
57bee29d GL |
797 | if (icd->streamer != file) |
798 | return -EBUSY; | |
799 | ||
e55222ef | 800 | /* This calls buf_queue from host driver's videobuf_queue_ops */ |
592c2aba GL |
801 | if (ici->ops->init_videobuf) |
802 | ret = videobuf_streamon(&icd->vb_vidq); | |
803 | else | |
804 | ret = vb2_streamon(&icd->vb2_vidq, i); | |
805 | ||
7fdbd85b AG |
806 | if (!ret) |
807 | v4l2_subdev_call(sd, video, s_stream, 1); | |
1c3bb743 | 808 | |
1c3bb743 | 809 | return ret; |
e55222ef GL |
810 | } |
811 | ||
812 | static int soc_camera_streamoff(struct file *file, void *priv, | |
813 | enum v4l2_buf_type i) | |
814 | { | |
57bee29d | 815 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 816 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
7dfff953 | 817 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
818 | |
819 | WARN_ON(priv != file->private_data); | |
820 | ||
e55222ef GL |
821 | if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
822 | return -EINVAL; | |
823 | ||
57bee29d GL |
824 | if (icd->streamer != file) |
825 | return -EBUSY; | |
826 | ||
5d28d525 GL |
827 | /* |
828 | * This calls buf_release from host driver's videobuf_queue_ops for all | |
829 | * remaining buffers. When the last buffer is freed, stop capture | |
830 | */ | |
592c2aba GL |
831 | if (ici->ops->init_videobuf) |
832 | videobuf_streamoff(&icd->vb_vidq); | |
833 | else | |
834 | vb2_streamoff(&icd->vb2_vidq, i); | |
e55222ef | 835 | |
c9c1f1c0 | 836 | v4l2_subdev_call(sd, video, s_stream, 0); |
e55222ef GL |
837 | |
838 | return 0; | |
839 | } | |
840 | ||
e55222ef GL |
841 | static int soc_camera_cropcap(struct file *file, void *fh, |
842 | struct v4l2_cropcap *a) | |
843 | { | |
57bee29d | 844 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 845 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef | 846 | |
6a6c8786 | 847 | return ici->ops->cropcap(icd, a); |
e55222ef GL |
848 | } |
849 | ||
850 | static int soc_camera_g_crop(struct file *file, void *fh, | |
851 | struct v4l2_crop *a) | |
852 | { | |
57bee29d | 853 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 854 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
6a6c8786 | 855 | int ret; |
e55222ef | 856 | |
6a6c8786 | 857 | ret = ici->ops->get_crop(icd, a); |
e55222ef | 858 | |
6a6c8786 | 859 | return ret; |
e55222ef GL |
860 | } |
861 | ||
68a54f0e GL |
862 | /* |
863 | * According to the V4L2 API, drivers shall not update the struct v4l2_crop | |
864 | * argument with the actual geometry, instead, the user shall use G_CROP to | |
ab56d5eb | 865 | * retrieve it. |
68a54f0e | 866 | */ |
e55222ef GL |
867 | static int soc_camera_s_crop(struct file *file, void *fh, |
868 | struct v4l2_crop *a) | |
869 | { | |
57bee29d | 870 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 871 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
6a6c8786 GL |
872 | struct v4l2_rect *rect = &a->c; |
873 | struct v4l2_crop current_crop; | |
e55222ef GL |
874 | int ret; |
875 | ||
876 | if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
877 | return -EINVAL; | |
878 | ||
7dfff953 | 879 | dev_dbg(icd->pdev, "S_CROP(%ux%u@%u:%u)\n", |
6a6c8786 GL |
880 | rect->width, rect->height, rect->left, rect->top); |
881 | ||
6a6c8786 GL |
882 | /* If get_crop fails, we'll let host and / or client drivers decide */ |
883 | ret = ici->ops->get_crop(icd, ¤t_crop); | |
884 | ||
b897a91a | 885 | /* Prohibit window size change with initialised buffers */ |
103754a0 | 886 | if (ret < 0) { |
7dfff953 | 887 | dev_err(icd->pdev, |
103754a0 | 888 | "S_CROP denied: getting current crop failed\n"); |
aee5c2f1 GL |
889 | } else if ((a->c.width == current_crop.c.width && |
890 | a->c.height == current_crop.c.height) || | |
891 | !is_streaming(ici, icd)) { | |
892 | /* same size or not streaming - use .set_crop() */ | |
893 | ret = ici->ops->set_crop(icd, a); | |
894 | } else if (ici->ops->set_livecrop) { | |
895 | ret = ici->ops->set_livecrop(icd, a); | |
896 | } else { | |
7dfff953 | 897 | dev_err(icd->pdev, |
b897a91a GL |
898 | "S_CROP denied: queue initialised and sizes differ\n"); |
899 | ret = -EBUSY; | |
b897a91a GL |
900 | } |
901 | ||
e55222ef GL |
902 | return ret; |
903 | } | |
904 | ||
c9f6ef69 GL |
905 | static int soc_camera_g_parm(struct file *file, void *fh, |
906 | struct v4l2_streamparm *a) | |
907 | { | |
57bee29d | 908 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 909 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
c9f6ef69 GL |
910 | |
911 | if (ici->ops->get_parm) | |
912 | return ici->ops->get_parm(icd, a); | |
913 | ||
914 | return -ENOIOCTLCMD; | |
915 | } | |
916 | ||
917 | static int soc_camera_s_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->set_parm) | |
924 | return ici->ops->set_parm(icd, a); | |
925 | ||
926 | return -ENOIOCTLCMD; | |
927 | } | |
928 | ||
e55222ef | 929 | static int soc_camera_g_chip_ident(struct file *file, void *fh, |
aecde8b5 | 930 | struct v4l2_dbg_chip_ident *id) |
e55222ef | 931 | { |
57bee29d | 932 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 933 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
e55222ef | 934 | |
c9c1f1c0 | 935 | return v4l2_subdev_call(sd, core, g_chip_ident, id); |
e55222ef GL |
936 | } |
937 | ||
938 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
939 | static int soc_camera_g_register(struct file *file, void *fh, | |
aecde8b5 | 940 | struct v4l2_dbg_register *reg) |
e55222ef | 941 | { |
57bee29d | 942 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 943 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
e55222ef | 944 | |
c9c1f1c0 | 945 | return v4l2_subdev_call(sd, core, g_register, reg); |
e55222ef GL |
946 | } |
947 | ||
948 | static int soc_camera_s_register(struct file *file, void *fh, | |
aecde8b5 | 949 | struct v4l2_dbg_register *reg) |
e55222ef | 950 | { |
57bee29d | 951 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 952 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
e55222ef | 953 | |
c9c1f1c0 | 954 | return v4l2_subdev_call(sd, core, s_register, reg); |
e55222ef GL |
955 | } |
956 | #endif | |
957 | ||
7dfff953 GL |
958 | static int soc_camera_probe(struct soc_camera_device *icd); |
959 | ||
e55222ef GL |
960 | /* So far this function cannot fail */ |
961 | static void scan_add_host(struct soc_camera_host *ici) | |
962 | { | |
963 | struct soc_camera_device *icd; | |
964 | ||
2f9a0c88 | 965 | mutex_lock(&ici->host_lock); |
e55222ef GL |
966 | |
967 | list_for_each_entry(icd, &devices, list) { | |
968 | if (icd->iface == ici->nr) { | |
40e2e092 | 969 | int ret; |
7dfff953 GL |
970 | |
971 | icd->parent = ici->v4l2_dev.dev; | |
972 | ret = soc_camera_probe(icd); | |
e55222ef GL |
973 | } |
974 | } | |
975 | ||
2f9a0c88 | 976 | mutex_unlock(&ici->host_lock); |
e55222ef GL |
977 | } |
978 | ||
40e2e092 GL |
979 | #ifdef CONFIG_I2C_BOARDINFO |
980 | static int soc_camera_init_i2c(struct soc_camera_device *icd, | |
981 | struct soc_camera_link *icl) | |
e55222ef | 982 | { |
40e2e092 | 983 | struct i2c_client *client; |
7dfff953 | 984 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
40e2e092 | 985 | struct i2c_adapter *adap = i2c_get_adapter(icl->i2c_adapter_id); |
979ea1dd | 986 | struct v4l2_subdev *subdev; |
e55222ef | 987 | |
40e2e092 | 988 | if (!adap) { |
7dfff953 | 989 | dev_err(icd->pdev, "Cannot get I2C adapter #%d. No driver?\n", |
40e2e092 GL |
990 | icl->i2c_adapter_id); |
991 | goto ei2cga; | |
992 | } | |
e55222ef | 993 | |
2f0babb7 | 994 | icl->board_info->platform_data = icl; |
e55222ef | 995 | |
979ea1dd | 996 | subdev = v4l2_i2c_new_subdev_board(&ici->v4l2_dev, adap, |
9a1f8b34 | 997 | icl->board_info, NULL); |
d74f841c | 998 | if (!subdev) |
40e2e092 | 999 | goto ei2cnd; |
e55222ef | 1000 | |
c4ce6d14 | 1001 | client = v4l2_get_subdevdata(subdev); |
979ea1dd | 1002 | |
40e2e092 | 1003 | /* Use to_i2c_client(dev) to recover the i2c client */ |
7dfff953 | 1004 | icd->control = &client->dev; |
e55222ef | 1005 | |
40e2e092 GL |
1006 | return 0; |
1007 | ei2cnd: | |
1008 | i2c_put_adapter(adap); | |
1009 | ei2cga: | |
d74f841c | 1010 | return -ENODEV; |
e55222ef GL |
1011 | } |
1012 | ||
40e2e092 GL |
1013 | static void soc_camera_free_i2c(struct soc_camera_device *icd) |
1014 | { | |
1015 | struct i2c_client *client = | |
1016 | to_i2c_client(to_soc_camera_control(icd)); | |
c8dd7078 | 1017 | struct i2c_adapter *adap = client->adapter; |
7dfff953 GL |
1018 | |
1019 | icd->control = NULL; | |
979ea1dd | 1020 | v4l2_device_unregister_subdev(i2c_get_clientdata(client)); |
40e2e092 | 1021 | i2c_unregister_device(client); |
c8dd7078 | 1022 | i2c_put_adapter(adap); |
40e2e092 GL |
1023 | } |
1024 | #else | |
1025 | #define soc_camera_init_i2c(icd, icl) (-ENODEV) | |
1026 | #define soc_camera_free_i2c(icd) do {} while (0) | |
1027 | #endif | |
1028 | ||
979ea1dd | 1029 | static int soc_camera_video_start(struct soc_camera_device *icd); |
40e2e092 GL |
1030 | static int video_dev_create(struct soc_camera_device *icd); |
1031 | /* Called during host-driver probe */ | |
7dfff953 | 1032 | static int soc_camera_probe(struct soc_camera_device *icd) |
e55222ef | 1033 | { |
7dfff953 | 1034 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
40e2e092 | 1035 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
979ea1dd | 1036 | struct device *control = NULL; |
6a6c8786 | 1037 | struct v4l2_subdev *sd; |
760697be | 1038 | struct v4l2_mbus_framefmt mf; |
e55222ef GL |
1039 | int ret; |
1040 | ||
7dfff953 | 1041 | dev_info(icd->pdev, "Probing %s\n", dev_name(icd->pdev)); |
1c3bb743 | 1042 | |
ee02da64 HV |
1043 | /* |
1044 | * Currently the subdev with the largest number of controls (13) is | |
1045 | * ov6550. So let's pick 16 as a hint for the control handler. Note | |
1046 | * that this is a hint only: too large and you waste some memory, too | |
1047 | * small and there is a (very) small performance hit when looking up | |
1048 | * controls in the internal hash. | |
1049 | */ | |
1050 | ret = v4l2_ctrl_handler_init(&icd->ctrl_handler, 16); | |
1051 | if (ret < 0) | |
1052 | return ret; | |
1053 | ||
96e442c1 AP |
1054 | ret = regulator_bulk_get(icd->pdev, icl->num_regulators, |
1055 | icl->regulators); | |
1056 | if (ret < 0) | |
1057 | goto ereg; | |
1058 | ||
7705b6d8 GL |
1059 | /* The camera could have been already on, try to reset */ |
1060 | if (icl->reset) | |
1061 | icl->reset(icd->pdev); | |
1062 | ||
1063 | ret = ici->ops->add(icd); | |
1064 | if (ret < 0) | |
1065 | goto eadd; | |
1066 | ||
7b9d8c3c GL |
1067 | /* |
1068 | * This will not yet call v4l2_subdev_core_ops::s_power(1), because the | |
1069 | * subdevice has not been initialised yet. We'll have to call it once | |
1070 | * again after initialisation, even though it shouldn't be needed, we | |
1071 | * don't do any IO here. | |
1072 | */ | |
3dcc731a | 1073 | ret = soc_camera_power_on(icd, icl); |
96e442c1 AP |
1074 | if (ret < 0) |
1075 | goto epower; | |
979ea1dd | 1076 | |
979ea1dd | 1077 | /* Must have icd->vdev before registering the device */ |
40e2e092 GL |
1078 | ret = video_dev_create(icd); |
1079 | if (ret < 0) | |
1080 | goto evdc; | |
1c3bb743 | 1081 | |
40e2e092 GL |
1082 | /* Non-i2c cameras, e.g., soc_camera_platform, have no board_info */ |
1083 | if (icl->board_info) { | |
1084 | ret = soc_camera_init_i2c(icd, icl); | |
1085 | if (ret < 0) | |
1086 | goto eadddev; | |
1087 | } else if (!icl->add_device || !icl->del_device) { | |
1c3bb743 | 1088 | ret = -EINVAL; |
40e2e092 GL |
1089 | goto eadddev; |
1090 | } else { | |
979ea1dd GL |
1091 | if (icl->module_name) |
1092 | ret = request_module(icl->module_name); | |
1093 | ||
7dfff953 | 1094 | ret = icl->add_device(icd); |
40e2e092 GL |
1095 | if (ret < 0) |
1096 | goto eadddev; | |
1c3bb743 | 1097 | |
96c75399 GL |
1098 | /* |
1099 | * FIXME: this is racy, have to use driver-binding notification, | |
1100 | * when it is available | |
1101 | */ | |
979ea1dd | 1102 | control = to_soc_camera_control(icd); |
08590b96 | 1103 | if (!control || !control->driver || !dev_get_drvdata(control) || |
979ea1dd | 1104 | !try_module_get(control->driver->owner)) { |
7dfff953 | 1105 | icl->del_device(icd); |
7ae77ee9 | 1106 | ret = -ENODEV; |
979ea1dd GL |
1107 | goto enodrv; |
1108 | } | |
40e2e092 | 1109 | } |
e55222ef | 1110 | |
24105ebc | 1111 | sd = soc_camera_to_subdev(icd); |
4c0b036d GL |
1112 | sd->grp_id = soc_camera_grp_id(icd); |
1113 | v4l2_set_subdev_hostdata(sd, icd); | |
24105ebc | 1114 | |
ee02da64 HV |
1115 | if (v4l2_ctrl_add_handler(&icd->ctrl_handler, sd->ctrl_handler)) |
1116 | goto ectrl; | |
1117 | ||
fa48984e GL |
1118 | /* At this point client .probe() should have run already */ |
1119 | ret = soc_camera_init_user_formats(icd); | |
1120 | if (ret < 0) | |
1121 | goto eiufmt; | |
1122 | ||
fa48984e GL |
1123 | icd->field = V4L2_FIELD_ANY; |
1124 | ||
b6a633c1 GL |
1125 | /* |
1126 | * ..._video_start() will create a device node, video_register_device() | |
1127 | * itself is protected against concurrent open() calls, but we also have | |
1128 | * to protect our data. | |
1129 | */ | |
979ea1dd GL |
1130 | mutex_lock(&icd->video_lock); |
1131 | ||
1132 | ret = soc_camera_video_start(icd); | |
1133 | if (ret < 0) | |
1134 | goto evidstart; | |
1135 | ||
7b9d8c3c GL |
1136 | ret = v4l2_subdev_call(sd, core, s_power, 1); |
1137 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
1138 | goto esdpwr; | |
1139 | ||
6a6c8786 | 1140 | /* Try to improve our guess of a reasonable window format */ |
760697be GL |
1141 | if (!v4l2_subdev_call(sd, video, g_mbus_fmt, &mf)) { |
1142 | icd->user_width = mf.width; | |
1143 | icd->user_height = mf.height; | |
1144 | icd->colorspace = mf.colorspace; | |
1145 | icd->field = mf.field; | |
6a6c8786 GL |
1146 | } |
1147 | ||
979ea1dd GL |
1148 | ici->ops->remove(icd); |
1149 | ||
3dcc731a | 1150 | soc_camera_power_off(icd, icl); |
979ea1dd GL |
1151 | |
1152 | mutex_unlock(&icd->video_lock); | |
025c18a1 | 1153 | |
40e2e092 | 1154 | return 0; |
e55222ef | 1155 | |
7b9d8c3c GL |
1156 | esdpwr: |
1157 | video_unregister_device(icd->vdev); | |
979ea1dd GL |
1158 | evidstart: |
1159 | mutex_unlock(&icd->video_lock); | |
fa48984e GL |
1160 | soc_camera_free_user_formats(icd); |
1161 | eiufmt: | |
ee02da64 | 1162 | ectrl: |
979ea1dd | 1163 | if (icl->board_info) { |
40e2e092 | 1164 | soc_camera_free_i2c(icd); |
979ea1dd | 1165 | } else { |
7dfff953 | 1166 | icl->del_device(icd); |
979ea1dd GL |
1167 | module_put(control->driver->owner); |
1168 | } | |
1169 | enodrv: | |
40e2e092 GL |
1170 | eadddev: |
1171 | video_device_release(icd->vdev); | |
7b9d8c3c | 1172 | icd->vdev = NULL; |
40e2e092 | 1173 | evdc: |
3dcc731a | 1174 | soc_camera_power_off(icd, icl); |
979ea1dd | 1175 | epower: |
7705b6d8 GL |
1176 | ici->ops->remove(icd); |
1177 | eadd: | |
96e442c1 AP |
1178 | regulator_bulk_free(icl->num_regulators, icl->regulators); |
1179 | ereg: | |
ee02da64 | 1180 | v4l2_ctrl_handler_free(&icd->ctrl_handler); |
e55222ef GL |
1181 | return ret; |
1182 | } | |
1183 | ||
5d28d525 GL |
1184 | /* |
1185 | * This is called on device_unregister, which only means we have to disconnect | |
1186 | * from the host, but not remove ourselves from the device list | |
1187 | */ | |
7dfff953 | 1188 | static int soc_camera_remove(struct soc_camera_device *icd) |
e55222ef | 1189 | { |
40e2e092 GL |
1190 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
1191 | struct video_device *vdev = icd->vdev; | |
e55222ef | 1192 | |
7dfff953 | 1193 | BUG_ON(!icd->parent); |
e55222ef | 1194 | |
ee02da64 | 1195 | v4l2_ctrl_handler_free(&icd->ctrl_handler); |
40e2e092 | 1196 | if (vdev) { |
40e2e092 GL |
1197 | video_unregister_device(vdev); |
1198 | icd->vdev = NULL; | |
40e2e092 GL |
1199 | } |
1200 | ||
979ea1dd | 1201 | if (icl->board_info) { |
40e2e092 | 1202 | soc_camera_free_i2c(icd); |
979ea1dd | 1203 | } else { |
7dfff953 | 1204 | struct device_driver *drv = to_soc_camera_control(icd)->driver; |
979ea1dd | 1205 | if (drv) { |
7dfff953 | 1206 | icl->del_device(icd); |
979ea1dd GL |
1207 | module_put(drv->owner); |
1208 | } | |
1209 | } | |
fa48984e | 1210 | soc_camera_free_user_formats(icd); |
025c18a1 | 1211 | |
96e442c1 AP |
1212 | regulator_bulk_free(icl->num_regulators, icl->regulators); |
1213 | ||
e55222ef GL |
1214 | return 0; |
1215 | } | |
1216 | ||
6a6c8786 GL |
1217 | static int default_cropcap(struct soc_camera_device *icd, |
1218 | struct v4l2_cropcap *a) | |
1219 | { | |
1220 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1221 | return v4l2_subdev_call(sd, video, cropcap, a); | |
1222 | } | |
1223 | ||
1224 | static int default_g_crop(struct soc_camera_device *icd, struct v4l2_crop *a) | |
1225 | { | |
1226 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1227 | return v4l2_subdev_call(sd, video, g_crop, a); | |
1228 | } | |
1229 | ||
1230 | static int default_s_crop(struct soc_camera_device *icd, struct v4l2_crop *a) | |
1231 | { | |
1232 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1233 | return v4l2_subdev_call(sd, video, s_crop, a); | |
1234 | } | |
1235 | ||
06e17821 JK |
1236 | static int default_g_parm(struct soc_camera_device *icd, |
1237 | struct v4l2_streamparm *parm) | |
1238 | { | |
1239 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1240 | return v4l2_subdev_call(sd, video, g_parm, parm); | |
1241 | } | |
1242 | ||
1243 | static int default_s_parm(struct soc_camera_device *icd, | |
1244 | struct v4l2_streamparm *parm) | |
1245 | { | |
1246 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1247 | return v4l2_subdev_call(sd, video, s_parm, parm); | |
1248 | } | |
1249 | ||
ad3537b5 GL |
1250 | static int default_enum_framesizes(struct soc_camera_device *icd, |
1251 | struct v4l2_frmsizeenum *fsize) | |
ed5b65dc QX |
1252 | { |
1253 | int ret; | |
1254 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1255 | const struct soc_camera_format_xlate *xlate; | |
1256 | __u32 pixfmt = fsize->pixel_format; | |
1257 | struct v4l2_frmsizeenum fsize_mbus = *fsize; | |
1258 | ||
1259 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); | |
1260 | if (!xlate) | |
1261 | return -EINVAL; | |
1262 | /* map xlate-code to pixel_format, sensor only handle xlate-code*/ | |
1263 | fsize_mbus.pixel_format = xlate->code; | |
1264 | ||
9633c086 | 1265 | ret = v4l2_subdev_call(sd, video, enum_framesizes, &fsize_mbus); |
ed5b65dc QX |
1266 | if (ret < 0) |
1267 | return ret; | |
1268 | ||
1269 | *fsize = fsize_mbus; | |
1270 | fsize->pixel_format = pixfmt; | |
1271 | ||
1272 | return 0; | |
1273 | } | |
1274 | ||
b8d9904c | 1275 | int soc_camera_host_register(struct soc_camera_host *ici) |
e55222ef | 1276 | { |
e55222ef | 1277 | struct soc_camera_host *ix; |
979ea1dd | 1278 | int ret; |
e55222ef | 1279 | |
64f5905e GL |
1280 | if (!ici || !ici->ops || |
1281 | !ici->ops->try_fmt || | |
1282 | !ici->ops->set_fmt || | |
1283 | !ici->ops->set_bus_param || | |
1284 | !ici->ops->querycap || | |
592c2aba GL |
1285 | ((!ici->ops->init_videobuf || |
1286 | !ici->ops->reqbufs) && | |
1287 | !ici->ops->init_videobuf2) || | |
64f5905e GL |
1288 | !ici->ops->add || |
1289 | !ici->ops->remove || | |
eff505fa | 1290 | !ici->ops->poll || |
979ea1dd | 1291 | !ici->v4l2_dev.dev) |
e55222ef GL |
1292 | return -EINVAL; |
1293 | ||
6a6c8786 GL |
1294 | if (!ici->ops->set_crop) |
1295 | ici->ops->set_crop = default_s_crop; | |
1296 | if (!ici->ops->get_crop) | |
1297 | ici->ops->get_crop = default_g_crop; | |
1298 | if (!ici->ops->cropcap) | |
1299 | ici->ops->cropcap = default_cropcap; | |
06e17821 JK |
1300 | if (!ici->ops->set_parm) |
1301 | ici->ops->set_parm = default_s_parm; | |
1302 | if (!ici->ops->get_parm) | |
1303 | ici->ops->get_parm = default_g_parm; | |
ad3537b5 GL |
1304 | if (!ici->ops->enum_framesizes) |
1305 | ici->ops->enum_framesizes = default_enum_framesizes; | |
6a6c8786 | 1306 | |
e55222ef GL |
1307 | mutex_lock(&list_lock); |
1308 | list_for_each_entry(ix, &hosts, list) { | |
1309 | if (ix->nr == ici->nr) { | |
979ea1dd GL |
1310 | ret = -EBUSY; |
1311 | goto edevreg; | |
e55222ef GL |
1312 | } |
1313 | } | |
1314 | ||
979ea1dd GL |
1315 | ret = v4l2_device_register(ici->v4l2_dev.dev, &ici->v4l2_dev); |
1316 | if (ret < 0) | |
1317 | goto edevreg; | |
eff505fa | 1318 | |
e55222ef GL |
1319 | list_add_tail(&ici->list, &hosts); |
1320 | mutex_unlock(&list_lock); | |
1321 | ||
2f9a0c88 | 1322 | mutex_init(&ici->host_lock); |
e55222ef GL |
1323 | scan_add_host(ici); |
1324 | ||
1325 | return 0; | |
979ea1dd GL |
1326 | |
1327 | edevreg: | |
1328 | mutex_unlock(&list_lock); | |
1329 | return ret; | |
e55222ef GL |
1330 | } |
1331 | EXPORT_SYMBOL(soc_camera_host_register); | |
1332 | ||
1333 | /* Unregister all clients! */ | |
1334 | void soc_camera_host_unregister(struct soc_camera_host *ici) | |
1335 | { | |
1336 | struct soc_camera_device *icd; | |
1337 | ||
1338 | mutex_lock(&list_lock); | |
1339 | ||
1340 | list_del(&ici->list); | |
7dfff953 GL |
1341 | list_for_each_entry(icd, &devices, list) |
1342 | if (icd->iface == ici->nr && to_soc_camera_control(icd)) | |
1343 | soc_camera_remove(icd); | |
e55222ef GL |
1344 | |
1345 | mutex_unlock(&list_lock); | |
1346 | ||
979ea1dd | 1347 | v4l2_device_unregister(&ici->v4l2_dev); |
e55222ef GL |
1348 | } |
1349 | EXPORT_SYMBOL(soc_camera_host_unregister); | |
1350 | ||
1351 | /* Image capture device */ | |
40e2e092 | 1352 | static int soc_camera_device_register(struct soc_camera_device *icd) |
e55222ef GL |
1353 | { |
1354 | struct soc_camera_device *ix; | |
1355 | int num = -1, i; | |
1356 | ||
e55222ef GL |
1357 | for (i = 0; i < 256 && num < 0; i++) { |
1358 | num = i; | |
40e2e092 | 1359 | /* Check if this index is available on this interface */ |
e55222ef GL |
1360 | list_for_each_entry(ix, &devices, list) { |
1361 | if (ix->iface == icd->iface && ix->devnum == i) { | |
1362 | num = -1; | |
1363 | break; | |
1364 | } | |
1365 | } | |
1366 | } | |
1367 | ||
1368 | if (num < 0) | |
5d28d525 GL |
1369 | /* |
1370 | * ok, we have 256 cameras on this host... | |
1371 | * man, stay reasonable... | |
1372 | */ | |
e55222ef GL |
1373 | return -ENOMEM; |
1374 | ||
64ff9ba5 | 1375 | icd->devnum = num; |
64f5905e GL |
1376 | icd->use_count = 0; |
1377 | icd->host_priv = NULL; | |
1c3bb743 | 1378 | mutex_init(&icd->video_lock); |
e55222ef | 1379 | |
40e2e092 GL |
1380 | list_add_tail(&icd->list, &devices); |
1381 | ||
1382 | return 0; | |
e55222ef | 1383 | } |
e55222ef | 1384 | |
a399810c HV |
1385 | static const struct v4l2_ioctl_ops soc_camera_ioctl_ops = { |
1386 | .vidioc_querycap = soc_camera_querycap, | |
7ae77ee9 | 1387 | .vidioc_try_fmt_vid_cap = soc_camera_try_fmt_vid_cap, |
a399810c | 1388 | .vidioc_g_fmt_vid_cap = soc_camera_g_fmt_vid_cap, |
a399810c | 1389 | .vidioc_s_fmt_vid_cap = soc_camera_s_fmt_vid_cap, |
7ae77ee9 | 1390 | .vidioc_enum_fmt_vid_cap = soc_camera_enum_fmt_vid_cap, |
a399810c HV |
1391 | .vidioc_enum_input = soc_camera_enum_input, |
1392 | .vidioc_g_input = soc_camera_g_input, | |
1393 | .vidioc_s_input = soc_camera_s_input, | |
1394 | .vidioc_s_std = soc_camera_s_std, | |
2f0babb7 | 1395 | .vidioc_g_std = soc_camera_g_std, |
ad3537b5 | 1396 | .vidioc_enum_framesizes = soc_camera_enum_framesizes, |
a399810c | 1397 | .vidioc_reqbufs = soc_camera_reqbufs, |
a399810c HV |
1398 | .vidioc_querybuf = soc_camera_querybuf, |
1399 | .vidioc_qbuf = soc_camera_qbuf, | |
1400 | .vidioc_dqbuf = soc_camera_dqbuf, | |
7ae77ee9 GL |
1401 | .vidioc_create_bufs = soc_camera_create_bufs, |
1402 | .vidioc_prepare_buf = soc_camera_prepare_buf, | |
a399810c HV |
1403 | .vidioc_streamon = soc_camera_streamon, |
1404 | .vidioc_streamoff = soc_camera_streamoff, | |
a399810c HV |
1405 | .vidioc_cropcap = soc_camera_cropcap, |
1406 | .vidioc_g_crop = soc_camera_g_crop, | |
1407 | .vidioc_s_crop = soc_camera_s_crop, | |
c9f6ef69 GL |
1408 | .vidioc_g_parm = soc_camera_g_parm, |
1409 | .vidioc_s_parm = soc_camera_s_parm, | |
a399810c HV |
1410 | .vidioc_g_chip_ident = soc_camera_g_chip_ident, |
1411 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
1412 | .vidioc_g_register = soc_camera_g_register, | |
1413 | .vidioc_s_register = soc_camera_s_register, | |
1414 | #endif | |
1415 | }; | |
1416 | ||
40e2e092 | 1417 | static int video_dev_create(struct soc_camera_device *icd) |
e55222ef | 1418 | { |
7dfff953 | 1419 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
40e2e092 | 1420 | struct video_device *vdev = video_device_alloc(); |
e55222ef | 1421 | |
e55222ef | 1422 | if (!vdev) |
40e2e092 | 1423 | return -ENOMEM; |
e55222ef GL |
1424 | |
1425 | strlcpy(vdev->name, ici->drv_name, sizeof(vdev->name)); | |
1c3bb743 | 1426 | |
7dfff953 | 1427 | vdev->parent = icd->pdev; |
e55222ef GL |
1428 | vdev->current_norm = V4L2_STD_UNKNOWN; |
1429 | vdev->fops = &soc_camera_fops; | |
a399810c | 1430 | vdev->ioctl_ops = &soc_camera_ioctl_ops; |
e55222ef | 1431 | vdev->release = video_device_release; |
40e2e092 | 1432 | vdev->tvnorms = V4L2_STD_UNKNOWN; |
ee02da64 | 1433 | vdev->ctrl_handler = &icd->ctrl_handler; |
7a05dfed | 1434 | vdev->lock = &icd->video_lock; |
5126f259 HV |
1435 | /* Locking in file operations other than ioctl should be done |
1436 | by the driver, not the V4L2 core. | |
1437 | This driver needs auditing so that this flag can be removed. */ | |
1438 | set_bit(V4L2_FL_LOCK_ALL_FOPS, &vdev->flags); | |
e55222ef | 1439 | |
e55222ef GL |
1440 | icd->vdev = vdev; |
1441 | ||
1442 | return 0; | |
40e2e092 | 1443 | } |
e55222ef | 1444 | |
40e2e092 | 1445 | /* |
979ea1dd | 1446 | * Called from soc_camera_probe() above (with .video_lock held???) |
40e2e092 | 1447 | */ |
979ea1dd | 1448 | static int soc_camera_video_start(struct soc_camera_device *icd) |
40e2e092 | 1449 | { |
d364ee4f | 1450 | const struct device_type *type = icd->vdev->dev.type; |
979ea1dd | 1451 | int ret; |
40e2e092 | 1452 | |
7dfff953 | 1453 | if (!icd->parent) |
40e2e092 GL |
1454 | return -ENODEV; |
1455 | ||
46b21094 | 1456 | ret = video_register_device(icd->vdev, VFL_TYPE_GRABBER, -1); |
979ea1dd | 1457 | if (ret < 0) { |
7dfff953 | 1458 | dev_err(icd->pdev, "video_register_device failed: %d\n", ret); |
979ea1dd GL |
1459 | return ret; |
1460 | } | |
40e2e092 | 1461 | |
4f9fb5ed MCC |
1462 | /* Restore device type, possibly set by the subdevice driver */ |
1463 | icd->vdev->dev.type = type; | |
1464 | ||
979ea1dd | 1465 | return 0; |
e55222ef | 1466 | } |
e55222ef | 1467 | |
40e2e092 | 1468 | static int __devinit soc_camera_pdrv_probe(struct platform_device *pdev) |
0fd327bd | 1469 | { |
40e2e092 GL |
1470 | struct soc_camera_link *icl = pdev->dev.platform_data; |
1471 | struct soc_camera_device *icd; | |
c41debaf | 1472 | int ret; |
0fd327bd | 1473 | |
40e2e092 GL |
1474 | if (!icl) |
1475 | return -EINVAL; | |
0fd327bd | 1476 | |
40e2e092 GL |
1477 | icd = kzalloc(sizeof(*icd), GFP_KERNEL); |
1478 | if (!icd) | |
1479 | return -ENOMEM; | |
0fd327bd | 1480 | |
40e2e092 | 1481 | icd->iface = icl->bus_id; |
7dfff953 | 1482 | icd->link = icl; |
979ea1dd | 1483 | icd->pdev = &pdev->dev; |
40e2e092 | 1484 | platform_set_drvdata(pdev, icd); |
0fd327bd | 1485 | |
40e2e092 GL |
1486 | ret = soc_camera_device_register(icd); |
1487 | if (ret < 0) | |
1488 | goto escdevreg; | |
0fd327bd | 1489 | |
6a6c8786 GL |
1490 | icd->user_width = DEFAULT_WIDTH; |
1491 | icd->user_height = DEFAULT_HEIGHT; | |
1492 | ||
40e2e092 | 1493 | return 0; |
0fd327bd | 1494 | |
40e2e092 GL |
1495 | escdevreg: |
1496 | kfree(icd); | |
0fd327bd | 1497 | |
40e2e092 | 1498 | return ret; |
c41debaf | 1499 | } |
0fd327bd | 1500 | |
5d28d525 GL |
1501 | /* |
1502 | * Only called on rmmod for each platform device, since they are not | |
40e2e092 | 1503 | * hot-pluggable. Now we know, that all our users - hosts and devices have |
5d28d525 GL |
1504 | * been unloaded already |
1505 | */ | |
40e2e092 | 1506 | static int __devexit soc_camera_pdrv_remove(struct platform_device *pdev) |
c41debaf | 1507 | { |
40e2e092 | 1508 | struct soc_camera_device *icd = platform_get_drvdata(pdev); |
c41debaf | 1509 | |
40e2e092 | 1510 | if (!icd) |
c41debaf GL |
1511 | return -EINVAL; |
1512 | ||
7dfff953 | 1513 | list_del(&icd->list); |
c41debaf | 1514 | |
40e2e092 | 1515 | kfree(icd); |
c41debaf | 1516 | |
0fd327bd GL |
1517 | return 0; |
1518 | } | |
1519 | ||
1520 | static struct platform_driver __refdata soc_camera_pdrv = { | |
1858c99d | 1521 | .probe = soc_camera_pdrv_probe, |
40e2e092 GL |
1522 | .remove = __devexit_p(soc_camera_pdrv_remove), |
1523 | .driver = { | |
1524 | .name = "soc-camera-pdrv", | |
1525 | .owner = THIS_MODULE, | |
0fd327bd GL |
1526 | }, |
1527 | }; | |
1528 | ||
e55222ef GL |
1529 | static int __init soc_camera_init(void) |
1530 | { | |
1858c99d | 1531 | return platform_driver_register(&soc_camera_pdrv); |
e55222ef GL |
1532 | } |
1533 | ||
1534 | static void __exit soc_camera_exit(void) | |
1535 | { | |
0fd327bd | 1536 | platform_driver_unregister(&soc_camera_pdrv); |
e55222ef GL |
1537 | } |
1538 | ||
1539 | module_init(soc_camera_init); | |
1540 | module_exit(soc_camera_exit); | |
1541 | ||
1542 | MODULE_DESCRIPTION("Image capture bus driver"); | |
1543 | MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>"); | |
1544 | MODULE_LICENSE("GPL"); | |
0fd327bd | 1545 | MODULE_ALIAS("platform:soc-camera-pdrv"); |