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 | |
4ec10bac | 53 | int soc_camera_power_on(struct device *dev, struct soc_camera_link *icl) |
96e442c1 | 54 | { |
7b9d8c3c GL |
55 | int ret = regulator_bulk_enable(icl->num_regulators, |
56 | icl->regulators); | |
3dcc731a | 57 | if (ret < 0) { |
4ec10bac | 58 | dev_err(dev, "Cannot enable regulators\n"); |
3dcc731a GL |
59 | return ret; |
60 | } | |
96e442c1 | 61 | |
3dcc731a | 62 | if (icl->power) { |
4ec10bac | 63 | ret = icl->power(dev, 1); |
96e442c1 | 64 | if (ret < 0) { |
4ec10bac | 65 | dev_err(dev, |
96e442c1 | 66 | "Platform failed to power-on the camera.\n"); |
4ec10bac LP |
67 | regulator_bulk_disable(icl->num_regulators, |
68 | icl->regulators); | |
96e442c1 | 69 | } |
3dcc731a GL |
70 | } |
71 | ||
72 | return ret; | |
73 | } | |
4ec10bac | 74 | EXPORT_SYMBOL(soc_camera_power_on); |
3dcc731a | 75 | |
4ec10bac | 76 | int soc_camera_power_off(struct device *dev, struct soc_camera_link *icl) |
3dcc731a | 77 | { |
24592adc LP |
78 | int ret = 0; |
79 | int err; | |
7b9d8c3c | 80 | |
3dcc731a | 81 | if (icl->power) { |
4ec10bac | 82 | err = icl->power(dev, 0); |
24592adc | 83 | if (err < 0) { |
4ec10bac | 84 | dev_err(dev, |
96e442c1 | 85 | "Platform failed to power-off the camera.\n"); |
4ec10bac | 86 | ret = err; |
96e442c1 | 87 | } |
96e442c1 AP |
88 | } |
89 | ||
24592adc | 90 | err = regulator_bulk_disable(icl->num_regulators, |
3dcc731a | 91 | icl->regulators); |
24592adc | 92 | if (err < 0) { |
4ec10bac | 93 | dev_err(dev, "Cannot disable regulators\n"); |
24592adc LP |
94 | ret = ret ? : err; |
95 | } | |
3dcc731a GL |
96 | |
97 | return ret; | |
96e442c1 | 98 | } |
4ec10bac LP |
99 | EXPORT_SYMBOL(soc_camera_power_off); |
100 | ||
101 | static int __soc_camera_power_on(struct soc_camera_device *icd) | |
102 | { | |
103 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
104 | int ret; | |
105 | ||
106 | ret = v4l2_subdev_call(sd, core, s_power, 1); | |
107 | if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) | |
108 | return ret; | |
109 | ||
110 | return 0; | |
111 | } | |
112 | ||
113 | static int __soc_camera_power_off(struct soc_camera_device *icd) | |
114 | { | |
115 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
116 | int ret; | |
117 | ||
118 | ret = v4l2_subdev_call(sd, core, s_power, 0); | |
119 | if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) | |
120 | return ret; | |
121 | ||
122 | return 0; | |
123 | } | |
96e442c1 | 124 | |
c2786ad2 GL |
125 | const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc( |
126 | struct soc_camera_device *icd, unsigned int fourcc) | |
127 | { | |
128 | unsigned int i; | |
129 | ||
130 | for (i = 0; i < icd->num_user_formats; i++) | |
131 | if (icd->user_formats[i].host_fmt->fourcc == fourcc) | |
132 | return icd->user_formats + i; | |
133 | return NULL; | |
134 | } | |
135 | EXPORT_SYMBOL(soc_camera_xlate_by_fourcc); | |
136 | ||
32c69fcc GL |
137 | /** |
138 | * soc_camera_apply_board_flags() - apply platform SOCAM_SENSOR_INVERT_* flags | |
139 | * @icl: camera platform parameters | |
140 | * @cfg: media bus configuration | |
141 | * @return: resulting flags | |
142 | */ | |
143 | unsigned long soc_camera_apply_board_flags(struct soc_camera_link *icl, | |
144 | const struct v4l2_mbus_config *cfg) | |
145 | { | |
146 | unsigned long f, flags = cfg->flags; | |
147 | ||
148 | /* If only one of the two polarities is supported, switch to the opposite */ | |
149 | if (icl->flags & SOCAM_SENSOR_INVERT_HSYNC) { | |
150 | f = flags & (V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW); | |
151 | if (f == V4L2_MBUS_HSYNC_ACTIVE_HIGH || f == V4L2_MBUS_HSYNC_ACTIVE_LOW) | |
152 | flags ^= V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW; | |
153 | } | |
154 | ||
155 | if (icl->flags & SOCAM_SENSOR_INVERT_VSYNC) { | |
156 | f = flags & (V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW); | |
157 | if (f == V4L2_MBUS_VSYNC_ACTIVE_HIGH || f == V4L2_MBUS_VSYNC_ACTIVE_LOW) | |
158 | flags ^= V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW; | |
159 | } | |
160 | ||
161 | if (icl->flags & SOCAM_SENSOR_INVERT_PCLK) { | |
162 | f = flags & (V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING); | |
163 | if (f == V4L2_MBUS_PCLK_SAMPLE_RISING || f == V4L2_MBUS_PCLK_SAMPLE_FALLING) | |
164 | flags ^= V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING; | |
165 | } | |
166 | ||
167 | return flags; | |
168 | } | |
169 | EXPORT_SYMBOL(soc_camera_apply_board_flags); | |
170 | ||
dca6b6d1 SA |
171 | #define pixfmtstr(x) (x) & 0xff, ((x) >> 8) & 0xff, ((x) >> 16) & 0xff, \ |
172 | ((x) >> 24) & 0xff | |
173 | ||
174 | static int soc_camera_try_fmt(struct soc_camera_device *icd, | |
175 | struct v4l2_format *f) | |
176 | { | |
7dfff953 | 177 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
bed8d803 | 178 | const struct soc_camera_format_xlate *xlate; |
dca6b6d1 SA |
179 | struct v4l2_pix_format *pix = &f->fmt.pix; |
180 | int ret; | |
181 | ||
7dfff953 | 182 | dev_dbg(icd->pdev, "TRY_FMT(%c%c%c%c, %ux%u)\n", |
dca6b6d1 SA |
183 | pixfmtstr(pix->pixelformat), pix->width, pix->height); |
184 | ||
a70a6c43 AW |
185 | if (pix->pixelformat != V4L2_PIX_FMT_JPEG && |
186 | !(ici->capabilities & SOCAM_HOST_CAP_STRIDE)) { | |
914f05c8 LP |
187 | pix->bytesperline = 0; |
188 | pix->sizeimage = 0; | |
189 | } | |
dca6b6d1 SA |
190 | |
191 | ret = ici->ops->try_fmt(icd, f); | |
192 | if (ret < 0) | |
193 | return ret; | |
194 | ||
bed8d803 LP |
195 | xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat); |
196 | if (!xlate) | |
197 | return -EINVAL; | |
dca6b6d1 | 198 | |
bed8d803 LP |
199 | ret = soc_mbus_bytes_per_line(pix->width, xlate->host_fmt); |
200 | if (ret < 0) | |
201 | return ret; | |
dca6b6d1 | 202 | |
bed8d803 LP |
203 | pix->bytesperline = max_t(u32, pix->bytesperline, ret); |
204 | ||
205 | ret = soc_mbus_image_size(xlate->host_fmt, pix->bytesperline, | |
206 | pix->height); | |
207 | if (ret < 0) | |
208 | return ret; | |
209 | ||
210 | pix->sizeimage = max_t(u32, pix->sizeimage, ret); | |
dca6b6d1 SA |
211 | |
212 | return 0; | |
213 | } | |
214 | ||
72937890 | 215 | static int soc_camera_try_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 216 | struct v4l2_format *f) |
e55222ef | 217 | { |
57bee29d | 218 | struct soc_camera_device *icd = file->private_data; |
e55222ef GL |
219 | |
220 | WARN_ON(priv != file->private_data); | |
221 | ||
d366d4a0 GL |
222 | /* Only single-plane capture is supported so far */ |
223 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
224 | return -EINVAL; | |
225 | ||
ad5f2e85 | 226 | /* limit format to hardware capabilities */ |
dca6b6d1 | 227 | return soc_camera_try_fmt(icd, f); |
e55222ef GL |
228 | } |
229 | ||
230 | static int soc_camera_enum_input(struct file *file, void *priv, | |
231 | struct v4l2_input *inp) | |
232 | { | |
233 | if (inp->index != 0) | |
234 | return -EINVAL; | |
235 | ||
8318a64b GL |
236 | /* default is camera */ |
237 | inp->type = V4L2_INPUT_TYPE_CAMERA; | |
238 | inp->std = V4L2_STD_UNKNOWN; | |
239 | strcpy(inp->name, "Camera"); | |
e55222ef | 240 | |
8318a64b | 241 | return 0; |
e55222ef GL |
242 | } |
243 | ||
244 | static int soc_camera_g_input(struct file *file, void *priv, unsigned int *i) | |
245 | { | |
246 | *i = 0; | |
247 | ||
248 | return 0; | |
249 | } | |
250 | ||
251 | static int soc_camera_s_input(struct file *file, void *priv, unsigned int i) | |
252 | { | |
253 | if (i > 0) | |
254 | return -EINVAL; | |
255 | ||
256 | return 0; | |
257 | } | |
258 | ||
259 | static int soc_camera_s_std(struct file *file, void *priv, v4l2_std_id *a) | |
260 | { | |
57bee29d | 261 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 262 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
513791ab | 263 | |
c9c1f1c0 | 264 | return v4l2_subdev_call(sd, core, s_std, *a); |
e55222ef GL |
265 | } |
266 | ||
2f0babb7 GL |
267 | static int soc_camera_g_std(struct file *file, void *priv, v4l2_std_id *a) |
268 | { | |
269 | struct soc_camera_device *icd = file->private_data; | |
270 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
271 | ||
272 | return v4l2_subdev_call(sd, core, g_std, a); | |
273 | } | |
274 | ||
ad3537b5 | 275 | static int soc_camera_enum_framesizes(struct file *file, void *fh, |
ed5b65dc QX |
276 | struct v4l2_frmsizeenum *fsize) |
277 | { | |
278 | struct soc_camera_device *icd = file->private_data; | |
7dfff953 | 279 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
ed5b65dc | 280 | |
ad3537b5 | 281 | return ici->ops->enum_framesizes(icd, fsize); |
ed5b65dc QX |
282 | } |
283 | ||
e55222ef GL |
284 | static int soc_camera_reqbufs(struct file *file, void *priv, |
285 | struct v4l2_requestbuffers *p) | |
286 | { | |
287 | int ret; | |
57bee29d | 288 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 289 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
290 | |
291 | WARN_ON(priv != file->private_data); | |
292 | ||
57bee29d GL |
293 | if (icd->streamer && icd->streamer != file) |
294 | return -EBUSY; | |
295 | ||
592c2aba GL |
296 | if (ici->ops->init_videobuf) { |
297 | ret = videobuf_reqbufs(&icd->vb_vidq, p); | |
298 | if (ret < 0) | |
299 | return ret; | |
300 | ||
301 | ret = ici->ops->reqbufs(icd, p); | |
302 | } else { | |
303 | ret = vb2_reqbufs(&icd->vb2_vidq, p); | |
304 | } | |
e55222ef | 305 | |
57bee29d GL |
306 | if (!ret && !icd->streamer) |
307 | icd->streamer = file; | |
308 | ||
309 | return ret; | |
e55222ef GL |
310 | } |
311 | ||
312 | static int soc_camera_querybuf(struct file *file, void *priv, | |
313 | struct v4l2_buffer *p) | |
314 | { | |
57bee29d | 315 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 316 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
317 | |
318 | WARN_ON(priv != file->private_data); | |
319 | ||
592c2aba GL |
320 | if (ici->ops->init_videobuf) |
321 | return videobuf_querybuf(&icd->vb_vidq, p); | |
322 | else | |
323 | return vb2_querybuf(&icd->vb2_vidq, p); | |
e55222ef GL |
324 | } |
325 | ||
326 | static int soc_camera_qbuf(struct file *file, void *priv, | |
327 | struct v4l2_buffer *p) | |
328 | { | |
57bee29d | 329 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 330 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
331 | |
332 | WARN_ON(priv != file->private_data); | |
333 | ||
57bee29d GL |
334 | if (icd->streamer != file) |
335 | return -EBUSY; | |
336 | ||
592c2aba GL |
337 | if (ici->ops->init_videobuf) |
338 | return videobuf_qbuf(&icd->vb_vidq, p); | |
339 | else | |
340 | return vb2_qbuf(&icd->vb2_vidq, p); | |
e55222ef GL |
341 | } |
342 | ||
343 | static int soc_camera_dqbuf(struct file *file, void *priv, | |
344 | struct v4l2_buffer *p) | |
345 | { | |
57bee29d | 346 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 347 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
348 | |
349 | WARN_ON(priv != file->private_data); | |
350 | ||
57bee29d GL |
351 | if (icd->streamer != file) |
352 | return -EBUSY; | |
353 | ||
592c2aba GL |
354 | if (ici->ops->init_videobuf) |
355 | return videobuf_dqbuf(&icd->vb_vidq, p, file->f_flags & O_NONBLOCK); | |
356 | else | |
357 | return vb2_dqbuf(&icd->vb2_vidq, p, file->f_flags & O_NONBLOCK); | |
e55222ef GL |
358 | } |
359 | ||
7ae77ee9 GL |
360 | static int soc_camera_create_bufs(struct file *file, void *priv, |
361 | struct v4l2_create_buffers *create) | |
362 | { | |
363 | struct soc_camera_device *icd = file->private_data; | |
364 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
365 | ||
366 | /* videobuf2 only */ | |
367 | if (ici->ops->init_videobuf) | |
368 | return -EINVAL; | |
369 | else | |
370 | return vb2_create_bufs(&icd->vb2_vidq, create); | |
371 | } | |
372 | ||
373 | static int soc_camera_prepare_buf(struct file *file, void *priv, | |
374 | struct v4l2_buffer *b) | |
375 | { | |
376 | struct soc_camera_device *icd = file->private_data; | |
377 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
378 | ||
379 | /* videobuf2 only */ | |
380 | if (ici->ops->init_videobuf) | |
381 | return -EINVAL; | |
382 | else | |
383 | return vb2_prepare_buf(&icd->vb2_vidq, b); | |
384 | } | |
385 | ||
40e2e092 | 386 | /* Always entered with .video_lock held */ |
c2786ad2 GL |
387 | static int soc_camera_init_user_formats(struct soc_camera_device *icd) |
388 | { | |
760697be | 389 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
7dfff953 | 390 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
3805f201 HV |
391 | unsigned int i, fmts = 0, raw_fmts = 0; |
392 | int ret; | |
760697be GL |
393 | enum v4l2_mbus_pixelcode code; |
394 | ||
395 | while (!v4l2_subdev_call(sd, video, enum_mbus_fmt, raw_fmts, &code)) | |
396 | raw_fmts++; | |
c2786ad2 GL |
397 | |
398 | if (!ici->ops->get_formats) | |
399 | /* | |
400 | * Fallback mode - the host will have to serve all | |
401 | * sensor-provided formats one-to-one to the user | |
402 | */ | |
760697be | 403 | fmts = raw_fmts; |
c2786ad2 GL |
404 | else |
405 | /* | |
406 | * First pass - only count formats this host-sensor | |
407 | * configuration can provide | |
408 | */ | |
760697be | 409 | for (i = 0; i < raw_fmts; i++) { |
fa48984e GL |
410 | ret = ici->ops->get_formats(icd, i, NULL); |
411 | if (ret < 0) | |
412 | return ret; | |
413 | fmts += ret; | |
414 | } | |
c2786ad2 GL |
415 | |
416 | if (!fmts) | |
417 | return -ENXIO; | |
418 | ||
419 | icd->user_formats = | |
420 | vmalloc(fmts * sizeof(struct soc_camera_format_xlate)); | |
421 | if (!icd->user_formats) | |
422 | return -ENOMEM; | |
423 | ||
7dfff953 | 424 | dev_dbg(icd->pdev, "Found %d supported formats.\n", fmts); |
c2786ad2 GL |
425 | |
426 | /* Second pass - actually fill data formats */ | |
14df2cce | 427 | fmts = 0; |
760697be | 428 | for (i = 0; i < raw_fmts; i++) |
c2786ad2 | 429 | if (!ici->ops->get_formats) { |
760697be | 430 | v4l2_subdev_call(sd, video, enum_mbus_fmt, i, &code); |
d2dcad49 | 431 | icd->user_formats[fmts].host_fmt = |
760697be | 432 | soc_mbus_get_fmtdesc(code); |
d2dcad49 GL |
433 | if (icd->user_formats[fmts].host_fmt) |
434 | icd->user_formats[fmts++].code = code; | |
c2786ad2 | 435 | } else { |
fa48984e GL |
436 | ret = ici->ops->get_formats(icd, i, |
437 | &icd->user_formats[fmts]); | |
438 | if (ret < 0) | |
439 | goto egfmt; | |
440 | fmts += ret; | |
c2786ad2 GL |
441 | } |
442 | ||
d2dcad49 | 443 | icd->num_user_formats = fmts; |
760697be | 444 | icd->current_fmt = &icd->user_formats[0]; |
c2786ad2 GL |
445 | |
446 | return 0; | |
fa48984e GL |
447 | |
448 | egfmt: | |
fa48984e GL |
449 | vfree(icd->user_formats); |
450 | return ret; | |
c2786ad2 GL |
451 | } |
452 | ||
40e2e092 | 453 | /* Always entered with .video_lock held */ |
c2786ad2 GL |
454 | static void soc_camera_free_user_formats(struct soc_camera_device *icd) |
455 | { | |
7dfff953 | 456 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
fa48984e GL |
457 | |
458 | if (ici->ops->put_formats) | |
459 | ici->ops->put_formats(icd); | |
40e2e092 | 460 | icd->current_fmt = NULL; |
fa48984e | 461 | icd->num_user_formats = 0; |
c2786ad2 | 462 | vfree(icd->user_formats); |
40e2e092 | 463 | icd->user_formats = NULL; |
c2786ad2 GL |
464 | } |
465 | ||
760697be | 466 | /* Called with .vb_lock held, or from the first open(2), see comment there */ |
57bee29d | 467 | static int soc_camera_set_fmt(struct soc_camera_device *icd, |
df2ed070 GL |
468 | struct v4l2_format *f) |
469 | { | |
7dfff953 | 470 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
df2ed070 GL |
471 | struct v4l2_pix_format *pix = &f->fmt.pix; |
472 | int ret; | |
473 | ||
7dfff953 | 474 | dev_dbg(icd->pdev, "S_FMT(%c%c%c%c, %ux%u)\n", |
6a6c8786 GL |
475 | pixfmtstr(pix->pixelformat), pix->width, pix->height); |
476 | ||
df2ed070 | 477 | /* We always call try_fmt() before set_fmt() or set_crop() */ |
dca6b6d1 | 478 | ret = soc_camera_try_fmt(icd, f); |
df2ed070 GL |
479 | if (ret < 0) |
480 | return ret; | |
481 | ||
482 | ret = ici->ops->set_fmt(icd, f); | |
483 | if (ret < 0) { | |
484 | return ret; | |
485 | } else if (!icd->current_fmt || | |
760697be | 486 | icd->current_fmt->host_fmt->fourcc != pix->pixelformat) { |
7dfff953 | 487 | dev_err(icd->pdev, |
df2ed070 GL |
488 | "Host driver hasn't set up current format correctly!\n"); |
489 | return -EINVAL; | |
490 | } | |
491 | ||
6a6c8786 GL |
492 | icd->user_width = pix->width; |
493 | icd->user_height = pix->height; | |
0e4c180d SA |
494 | icd->bytesperline = pix->bytesperline; |
495 | icd->sizeimage = pix->sizeimage; | |
760697be | 496 | icd->colorspace = pix->colorspace; |
592c2aba GL |
497 | icd->field = pix->field; |
498 | if (ici->ops->init_videobuf) | |
499 | icd->vb_vidq.field = pix->field; | |
025c18a1 | 500 | |
7dfff953 | 501 | dev_dbg(icd->pdev, "set width: %d height: %d\n", |
6a6c8786 | 502 | icd->user_width, icd->user_height); |
df2ed070 GL |
503 | |
504 | /* set physical bus parameters */ | |
8843d119 | 505 | return ici->ops->set_bus_param(icd); |
df2ed070 GL |
506 | } |
507 | ||
bec43661 | 508 | static int soc_camera_open(struct file *file) |
e55222ef | 509 | { |
979ea1dd | 510 | struct video_device *vdev = video_devdata(file); |
7dfff953 | 511 | struct soc_camera_device *icd = dev_get_drvdata(vdev->parent); |
979ea1dd | 512 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
9dc4e48f | 513 | struct soc_camera_host *ici; |
e55222ef GL |
514 | int ret; |
515 | ||
b0050e41 | 516 | if (!to_soc_camera_control(icd)) |
40e2e092 GL |
517 | /* No device driver attached */ |
518 | return -ENODEV; | |
519 | ||
7dfff953 | 520 | ici = to_soc_camera_host(icd->parent); |
e55222ef | 521 | |
8422b087 HV |
522 | if (mutex_lock_interruptible(&icd->video_lock)) |
523 | return -ERESTARTSYS; | |
b8d9904c | 524 | if (!try_module_get(ici->ops->owner)) { |
7dfff953 | 525 | dev_err(icd->pdev, "Couldn't lock capture bus driver.\n"); |
8422b087 HV |
526 | ret = -EINVAL; |
527 | goto emodule; | |
e55222ef GL |
528 | } |
529 | ||
1a0063a9 GL |
530 | icd->use_count++; |
531 | ||
9dc4e48f GL |
532 | /* Now we really have to activate the camera */ |
533 | if (icd->use_count == 1) { | |
025c18a1 | 534 | /* Restore parameters before the last close() per V4L2 API */ |
df2ed070 GL |
535 | struct v4l2_format f = { |
536 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
537 | .fmt.pix = { | |
6a6c8786 GL |
538 | .width = icd->user_width, |
539 | .height = icd->user_height, | |
025c18a1 | 540 | .field = icd->field, |
760697be GL |
541 | .colorspace = icd->colorspace, |
542 | .pixelformat = | |
543 | icd->current_fmt->host_fmt->fourcc, | |
df2ed070 GL |
544 | }, |
545 | }; | |
546 | ||
979ea1dd GL |
547 | /* The camera could have been already on, try to reset */ |
548 | if (icl->reset) | |
549 | icl->reset(icd->pdev); | |
550 | ||
2f9a0c88 GL |
551 | /* Don't mess with the host during probe */ |
552 | mutex_lock(&ici->host_lock); | |
b8d9904c | 553 | ret = ici->ops->add(icd); |
2f9a0c88 | 554 | mutex_unlock(&ici->host_lock); |
9dc4e48f | 555 | if (ret < 0) { |
7dfff953 | 556 | dev_err(icd->pdev, "Couldn't activate the camera: %d\n", ret); |
9dc4e48f GL |
557 | goto eiciadd; |
558 | } | |
df2ed070 | 559 | |
4ec10bac | 560 | ret = __soc_camera_power_on(icd); |
7705b6d8 GL |
561 | if (ret < 0) |
562 | goto epower; | |
563 | ||
4f9fb5ed MCC |
564 | pm_runtime_enable(&icd->vdev->dev); |
565 | ret = pm_runtime_resume(&icd->vdev->dev); | |
566 | if (ret < 0 && ret != -ENOSYS) | |
567 | goto eresume; | |
568 | ||
760697be GL |
569 | /* |
570 | * Try to configure with default parameters. Notice: this is the | |
571 | * very first open, so, we cannot race against other calls, | |
572 | * apart from someone else calling open() simultaneously, but | |
573 | * .video_lock is protecting us against it. | |
574 | */ | |
57bee29d | 575 | ret = soc_camera_set_fmt(icd, &f); |
df2ed070 GL |
576 | if (ret < 0) |
577 | goto esfmt; | |
24d8c029 | 578 | |
592c2aba GL |
579 | if (ici->ops->init_videobuf) { |
580 | ici->ops->init_videobuf(&icd->vb_vidq, icd); | |
581 | } else { | |
582 | ret = ici->ops->init_videobuf2(&icd->vb2_vidq, icd); | |
583 | if (ret < 0) | |
584 | goto einitvb; | |
585 | } | |
ee02da64 | 586 | v4l2_ctrl_handler_setup(&icd->ctrl_handler); |
9dc4e48f | 587 | } |
8422b087 | 588 | mutex_unlock(&icd->video_lock); |
9dc4e48f | 589 | |
57bee29d | 590 | file->private_data = icd; |
7dfff953 | 591 | dev_dbg(icd->pdev, "camera device open\n"); |
e55222ef | 592 | |
e55222ef GL |
593 | return 0; |
594 | ||
df2ed070 | 595 | /* |
4f9fb5ed | 596 | * First four errors are entered with the .video_lock held |
df2ed070 GL |
597 | * and use_count == 1 |
598 | */ | |
592c2aba | 599 | einitvb: |
df2ed070 | 600 | esfmt: |
4f9fb5ed MCC |
601 | pm_runtime_disable(&icd->vdev->dev); |
602 | eresume: | |
4ec10bac | 603 | __soc_camera_power_off(icd); |
979ea1dd | 604 | epower: |
7705b6d8 GL |
605 | ici->ops->remove(icd); |
606 | eiciadd: | |
c2786ad2 | 607 | icd->use_count--; |
b8d9904c | 608 | module_put(ici->ops->owner); |
8422b087 HV |
609 | emodule: |
610 | mutex_unlock(&icd->video_lock); | |
57bee29d | 611 | |
e55222ef GL |
612 | return ret; |
613 | } | |
614 | ||
bec43661 | 615 | static int soc_camera_close(struct file *file) |
e55222ef | 616 | { |
57bee29d | 617 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 618 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef | 619 | |
8422b087 | 620 | mutex_lock(&icd->video_lock); |
9dc4e48f | 621 | icd->use_count--; |
40e2e092 | 622 | if (!icd->use_count) { |
4f9fb5ed MCC |
623 | pm_runtime_suspend(&icd->vdev->dev); |
624 | pm_runtime_disable(&icd->vdev->dev); | |
625 | ||
592c2aba GL |
626 | if (ici->ops->init_videobuf2) |
627 | vb2_queue_release(&icd->vb2_vidq); | |
48ecf9fe | 628 | ici->ops->remove(icd); |
4f9fb5ed | 629 | |
4ec10bac | 630 | __soc_camera_power_off(icd); |
40e2e092 | 631 | } |
025c18a1 | 632 | |
57bee29d GL |
633 | if (icd->streamer == file) |
634 | icd->streamer = NULL; | |
8422b087 | 635 | mutex_unlock(&icd->video_lock); |
57bee29d | 636 | |
b8d9904c | 637 | module_put(ici->ops->owner); |
9dc4e48f | 638 | |
7dfff953 | 639 | dev_dbg(icd->pdev, "camera device close\n"); |
e55222ef GL |
640 | |
641 | return 0; | |
642 | } | |
643 | ||
aba360d8 | 644 | static ssize_t soc_camera_read(struct file *file, char __user *buf, |
abe4c471 | 645 | size_t count, loff_t *ppos) |
e55222ef | 646 | { |
57bee29d | 647 | struct soc_camera_device *icd = file->private_data; |
1438be56 AG |
648 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
649 | ||
650 | dev_dbg(icd->pdev, "read called, buf %p\n", buf); | |
651 | ||
652 | if (ici->ops->init_videobuf2 && icd->vb2_vidq.io_modes & VB2_READ) | |
653 | return vb2_read(&icd->vb2_vidq, buf, count, ppos, | |
654 | file->f_flags & O_NONBLOCK); | |
e55222ef | 655 | |
7dfff953 | 656 | dev_err(icd->pdev, "camera device read not implemented\n"); |
e55222ef | 657 | |
1438be56 | 658 | return -EINVAL; |
e55222ef GL |
659 | } |
660 | ||
661 | static int soc_camera_mmap(struct file *file, struct vm_area_struct *vma) | |
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 GL |
665 | int err; |
666 | ||
7dfff953 | 667 | dev_dbg(icd->pdev, "mmap called, vma=0x%08lx\n", (unsigned long)vma); |
e55222ef | 668 | |
57bee29d GL |
669 | if (icd->streamer != file) |
670 | return -EBUSY; | |
671 | ||
8422b087 HV |
672 | if (mutex_lock_interruptible(&icd->video_lock)) |
673 | return -ERESTARTSYS; | |
592c2aba GL |
674 | if (ici->ops->init_videobuf) |
675 | err = videobuf_mmap_mapper(&icd->vb_vidq, vma); | |
676 | else | |
677 | err = vb2_mmap(&icd->vb2_vidq, vma); | |
8422b087 | 678 | mutex_unlock(&icd->video_lock); |
e55222ef | 679 | |
7dfff953 | 680 | dev_dbg(icd->pdev, "vma start=0x%08lx, size=%ld, ret=%d\n", |
e55222ef GL |
681 | (unsigned long)vma->vm_start, |
682 | (unsigned long)vma->vm_end - (unsigned long)vma->vm_start, | |
683 | err); | |
684 | ||
685 | return err; | |
686 | } | |
687 | ||
688 | static unsigned int soc_camera_poll(struct file *file, poll_table *pt) | |
689 | { | |
57bee29d | 690 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 691 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
8422b087 | 692 | unsigned res = POLLERR; |
e55222ef | 693 | |
57bee29d | 694 | if (icd->streamer != file) |
e55222ef | 695 | return POLLERR; |
e55222ef | 696 | |
8422b087 HV |
697 | mutex_lock(&icd->video_lock); |
698 | if (ici->ops->init_videobuf && list_empty(&icd->vb_vidq.stream)) | |
699 | dev_err(icd->pdev, "Trying to poll with no queued buffers!\n"); | |
700 | else | |
701 | res = ici->ops->poll(file, pt); | |
702 | mutex_unlock(&icd->video_lock); | |
703 | return res; | |
e55222ef GL |
704 | } |
705 | ||
592c2aba GL |
706 | void soc_camera_lock(struct vb2_queue *vq) |
707 | { | |
708 | struct soc_camera_device *icd = vb2_get_drv_priv(vq); | |
709 | mutex_lock(&icd->video_lock); | |
710 | } | |
711 | EXPORT_SYMBOL(soc_camera_lock); | |
712 | ||
713 | void soc_camera_unlock(struct vb2_queue *vq) | |
714 | { | |
715 | struct soc_camera_device *icd = vb2_get_drv_priv(vq); | |
716 | mutex_unlock(&icd->video_lock); | |
717 | } | |
718 | EXPORT_SYMBOL(soc_camera_unlock); | |
719 | ||
bec43661 | 720 | static struct v4l2_file_operations soc_camera_fops = { |
e55222ef GL |
721 | .owner = THIS_MODULE, |
722 | .open = soc_camera_open, | |
723 | .release = soc_camera_close, | |
b6a633c1 | 724 | .unlocked_ioctl = video_ioctl2, |
e55222ef GL |
725 | .read = soc_camera_read, |
726 | .mmap = soc_camera_mmap, | |
727 | .poll = soc_camera_poll, | |
e55222ef GL |
728 | }; |
729 | ||
72937890 | 730 | static int soc_camera_s_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 731 | struct v4l2_format *f) |
e55222ef | 732 | { |
57bee29d | 733 | struct soc_camera_device *icd = file->private_data; |
e55222ef | 734 | int ret; |
e55222ef GL |
735 | |
736 | WARN_ON(priv != file->private_data); | |
737 | ||
d366d4a0 | 738 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
7dfff953 | 739 | dev_warn(icd->pdev, "Wrong buf-type %d\n", f->type); |
d366d4a0 GL |
740 | return -EINVAL; |
741 | } | |
742 | ||
57bee29d GL |
743 | if (icd->streamer && icd->streamer != file) |
744 | return -EBUSY; | |
1c3bb743 | 745 | |
7dfff953 GL |
746 | if (is_streaming(to_soc_camera_host(icd->parent), icd)) { |
747 | dev_err(icd->pdev, "S_FMT denied: queue initialised\n"); | |
b6a633c1 | 748 | return -EBUSY; |
1c3bb743 GL |
749 | } |
750 | ||
57bee29d GL |
751 | ret = soc_camera_set_fmt(icd, f); |
752 | ||
753 | if (!ret && !icd->streamer) | |
754 | icd->streamer = file; | |
1c3bb743 | 755 | |
1c3bb743 | 756 | return ret; |
e55222ef GL |
757 | } |
758 | ||
72937890 | 759 | static int soc_camera_enum_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 760 | struct v4l2_fmtdesc *f) |
e55222ef | 761 | { |
57bee29d | 762 | struct soc_camera_device *icd = file->private_data; |
760697be | 763 | const struct soc_mbus_pixelfmt *format; |
e55222ef GL |
764 | |
765 | WARN_ON(priv != file->private_data); | |
766 | ||
c2786ad2 | 767 | if (f->index >= icd->num_user_formats) |
e55222ef GL |
768 | return -EINVAL; |
769 | ||
c2786ad2 | 770 | format = icd->user_formats[f->index].host_fmt; |
e55222ef | 771 | |
760697be GL |
772 | if (format->name) |
773 | strlcpy(f->description, format->name, sizeof(f->description)); | |
e55222ef GL |
774 | f->pixelformat = format->fourcc; |
775 | return 0; | |
776 | } | |
777 | ||
72937890 | 778 | static int soc_camera_g_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 779 | struct v4l2_format *f) |
e55222ef | 780 | { |
57bee29d | 781 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 782 | struct v4l2_pix_format *pix = &f->fmt.pix; |
e55222ef GL |
783 | |
784 | WARN_ON(priv != file->private_data); | |
785 | ||
d366d4a0 GL |
786 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
787 | return -EINVAL; | |
788 | ||
6a6c8786 GL |
789 | pix->width = icd->user_width; |
790 | pix->height = icd->user_height; | |
0e4c180d SA |
791 | pix->bytesperline = icd->bytesperline; |
792 | pix->sizeimage = icd->sizeimage; | |
592c2aba | 793 | pix->field = icd->field; |
760697be | 794 | pix->pixelformat = icd->current_fmt->host_fmt->fourcc; |
760697be | 795 | pix->colorspace = icd->colorspace; |
7dfff953 | 796 | dev_dbg(icd->pdev, "current_fmt->fourcc: 0x%08x\n", |
760697be | 797 | icd->current_fmt->host_fmt->fourcc); |
e55222ef GL |
798 | return 0; |
799 | } | |
800 | ||
801 | static int soc_camera_querycap(struct file *file, void *priv, | |
802 | struct v4l2_capability *cap) | |
803 | { | |
57bee29d | 804 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 805 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
806 | |
807 | WARN_ON(priv != file->private_data); | |
808 | ||
809 | strlcpy(cap->driver, ici->drv_name, sizeof(cap->driver)); | |
b8d9904c | 810 | return ici->ops->querycap(ici, cap); |
e55222ef GL |
811 | } |
812 | ||
813 | static int soc_camera_streamon(struct file *file, void *priv, | |
814 | enum v4l2_buf_type i) | |
815 | { | |
57bee29d | 816 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 817 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
c9c1f1c0 | 818 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
1c3bb743 | 819 | int ret; |
e55222ef GL |
820 | |
821 | WARN_ON(priv != file->private_data); | |
822 | ||
e55222ef GL |
823 | if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
824 | return -EINVAL; | |
825 | ||
57bee29d GL |
826 | if (icd->streamer != file) |
827 | return -EBUSY; | |
828 | ||
e55222ef | 829 | /* This calls buf_queue from host driver's videobuf_queue_ops */ |
592c2aba GL |
830 | if (ici->ops->init_videobuf) |
831 | ret = videobuf_streamon(&icd->vb_vidq); | |
832 | else | |
833 | ret = vb2_streamon(&icd->vb2_vidq, i); | |
834 | ||
7fdbd85b AG |
835 | if (!ret) |
836 | v4l2_subdev_call(sd, video, s_stream, 1); | |
1c3bb743 | 837 | |
1c3bb743 | 838 | return ret; |
e55222ef GL |
839 | } |
840 | ||
841 | static int soc_camera_streamoff(struct file *file, void *priv, | |
842 | enum v4l2_buf_type i) | |
843 | { | |
57bee29d | 844 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 845 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
7dfff953 | 846 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
847 | |
848 | WARN_ON(priv != file->private_data); | |
849 | ||
e55222ef GL |
850 | if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
851 | return -EINVAL; | |
852 | ||
57bee29d GL |
853 | if (icd->streamer != file) |
854 | return -EBUSY; | |
855 | ||
5d28d525 GL |
856 | /* |
857 | * This calls buf_release from host driver's videobuf_queue_ops for all | |
858 | * remaining buffers. When the last buffer is freed, stop capture | |
859 | */ | |
592c2aba GL |
860 | if (ici->ops->init_videobuf) |
861 | videobuf_streamoff(&icd->vb_vidq); | |
862 | else | |
863 | vb2_streamoff(&icd->vb2_vidq, i); | |
e55222ef | 864 | |
c9c1f1c0 | 865 | v4l2_subdev_call(sd, video, s_stream, 0); |
e55222ef GL |
866 | |
867 | return 0; | |
868 | } | |
869 | ||
e55222ef GL |
870 | static int soc_camera_cropcap(struct file *file, void *fh, |
871 | struct v4l2_cropcap *a) | |
872 | { | |
57bee29d | 873 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 874 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef | 875 | |
6a6c8786 | 876 | return ici->ops->cropcap(icd, a); |
e55222ef GL |
877 | } |
878 | ||
879 | static int soc_camera_g_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 | 884 | int ret; |
e55222ef | 885 | |
6a6c8786 | 886 | ret = ici->ops->get_crop(icd, a); |
e55222ef | 887 | |
6a6c8786 | 888 | return ret; |
e55222ef GL |
889 | } |
890 | ||
68a54f0e GL |
891 | /* |
892 | * According to the V4L2 API, drivers shall not update the struct v4l2_crop | |
893 | * argument with the actual geometry, instead, the user shall use G_CROP to | |
ab56d5eb | 894 | * retrieve it. |
68a54f0e | 895 | */ |
e55222ef | 896 | static int soc_camera_s_crop(struct file *file, void *fh, |
4f996594 | 897 | const struct v4l2_crop *a) |
e55222ef | 898 | { |
57bee29d | 899 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 900 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
4f996594 | 901 | const struct v4l2_rect *rect = &a->c; |
6a6c8786 | 902 | struct v4l2_crop current_crop; |
e55222ef GL |
903 | int ret; |
904 | ||
905 | if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
906 | return -EINVAL; | |
907 | ||
7dfff953 | 908 | dev_dbg(icd->pdev, "S_CROP(%ux%u@%u:%u)\n", |
6a6c8786 GL |
909 | rect->width, rect->height, rect->left, rect->top); |
910 | ||
6a6c8786 GL |
911 | /* If get_crop fails, we'll let host and / or client drivers decide */ |
912 | ret = ici->ops->get_crop(icd, ¤t_crop); | |
913 | ||
b897a91a | 914 | /* Prohibit window size change with initialised buffers */ |
103754a0 | 915 | if (ret < 0) { |
7dfff953 | 916 | dev_err(icd->pdev, |
103754a0 | 917 | "S_CROP denied: getting current crop failed\n"); |
aee5c2f1 GL |
918 | } else if ((a->c.width == current_crop.c.width && |
919 | a->c.height == current_crop.c.height) || | |
920 | !is_streaming(ici, icd)) { | |
921 | /* same size or not streaming - use .set_crop() */ | |
922 | ret = ici->ops->set_crop(icd, a); | |
923 | } else if (ici->ops->set_livecrop) { | |
924 | ret = ici->ops->set_livecrop(icd, a); | |
925 | } else { | |
7dfff953 | 926 | dev_err(icd->pdev, |
b897a91a GL |
927 | "S_CROP denied: queue initialised and sizes differ\n"); |
928 | ret = -EBUSY; | |
b897a91a GL |
929 | } |
930 | ||
e55222ef GL |
931 | return ret; |
932 | } | |
933 | ||
3bfb4100 GL |
934 | static int soc_camera_g_selection(struct file *file, void *fh, |
935 | struct v4l2_selection *s) | |
936 | { | |
937 | struct soc_camera_device *icd = file->private_data; | |
938 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
939 | ||
940 | /* With a wrong type no need to try to fall back to cropping */ | |
941 | if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
942 | return -EINVAL; | |
943 | ||
944 | if (!ici->ops->get_selection) | |
945 | return -ENOTTY; | |
946 | ||
947 | return ici->ops->get_selection(icd, s); | |
948 | } | |
949 | ||
950 | static int soc_camera_s_selection(struct file *file, void *fh, | |
951 | struct v4l2_selection *s) | |
952 | { | |
953 | struct soc_camera_device *icd = file->private_data; | |
954 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
955 | int ret; | |
956 | ||
957 | /* In all these cases cropping emulation will not help */ | |
958 | if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || | |
eb3c311c SN |
959 | (s->target != V4L2_SEL_TGT_COMPOSE && |
960 | s->target != V4L2_SEL_TGT_CROP)) | |
3bfb4100 GL |
961 | return -EINVAL; |
962 | ||
eb3c311c | 963 | if (s->target == V4L2_SEL_TGT_COMPOSE) { |
3bfb4100 GL |
964 | /* No output size change during a running capture! */ |
965 | if (is_streaming(ici, icd) && | |
966 | (icd->user_width != s->r.width || | |
967 | icd->user_height != s->r.height)) | |
968 | return -EBUSY; | |
969 | ||
970 | /* | |
971 | * Only one user is allowed to change the output format, touch | |
972 | * buffers, start / stop streaming, poll for data | |
973 | */ | |
974 | if (icd->streamer && icd->streamer != file) | |
975 | return -EBUSY; | |
976 | } | |
977 | ||
978 | if (!ici->ops->set_selection) | |
979 | return -ENOTTY; | |
980 | ||
981 | ret = ici->ops->set_selection(icd, s); | |
982 | if (!ret && | |
eb3c311c | 983 | s->target == V4L2_SEL_TGT_COMPOSE) { |
3bfb4100 GL |
984 | icd->user_width = s->r.width; |
985 | icd->user_height = s->r.height; | |
986 | if (!icd->streamer) | |
987 | icd->streamer = file; | |
988 | } | |
989 | ||
990 | return ret; | |
991 | } | |
992 | ||
c9f6ef69 GL |
993 | static int soc_camera_g_parm(struct file *file, void *fh, |
994 | struct v4l2_streamparm *a) | |
995 | { | |
57bee29d | 996 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 997 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
c9f6ef69 GL |
998 | |
999 | if (ici->ops->get_parm) | |
1000 | return ici->ops->get_parm(icd, a); | |
1001 | ||
1002 | return -ENOIOCTLCMD; | |
1003 | } | |
1004 | ||
1005 | static int soc_camera_s_parm(struct file *file, void *fh, | |
1006 | struct v4l2_streamparm *a) | |
1007 | { | |
57bee29d | 1008 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 1009 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
c9f6ef69 GL |
1010 | |
1011 | if (ici->ops->set_parm) | |
1012 | return ici->ops->set_parm(icd, a); | |
1013 | ||
1014 | return -ENOIOCTLCMD; | |
1015 | } | |
1016 | ||
e55222ef | 1017 | static int soc_camera_g_chip_ident(struct file *file, void *fh, |
aecde8b5 | 1018 | struct v4l2_dbg_chip_ident *id) |
e55222ef | 1019 | { |
57bee29d | 1020 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 1021 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
e55222ef | 1022 | |
c9c1f1c0 | 1023 | return v4l2_subdev_call(sd, core, g_chip_ident, id); |
e55222ef GL |
1024 | } |
1025 | ||
1026 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
1027 | static int soc_camera_g_register(struct file *file, void *fh, | |
aecde8b5 | 1028 | struct v4l2_dbg_register *reg) |
e55222ef | 1029 | { |
57bee29d | 1030 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 1031 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
e55222ef | 1032 | |
c9c1f1c0 | 1033 | return v4l2_subdev_call(sd, core, g_register, reg); |
e55222ef GL |
1034 | } |
1035 | ||
1036 | static int soc_camera_s_register(struct file *file, void *fh, | |
aecde8b5 | 1037 | struct v4l2_dbg_register *reg) |
e55222ef | 1038 | { |
57bee29d | 1039 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 1040 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
e55222ef | 1041 | |
c9c1f1c0 | 1042 | return v4l2_subdev_call(sd, core, s_register, reg); |
e55222ef GL |
1043 | } |
1044 | #endif | |
1045 | ||
7dfff953 GL |
1046 | static int soc_camera_probe(struct soc_camera_device *icd); |
1047 | ||
e55222ef GL |
1048 | /* So far this function cannot fail */ |
1049 | static void scan_add_host(struct soc_camera_host *ici) | |
1050 | { | |
1051 | struct soc_camera_device *icd; | |
1052 | ||
2f9a0c88 | 1053 | mutex_lock(&ici->host_lock); |
e55222ef GL |
1054 | |
1055 | list_for_each_entry(icd, &devices, list) { | |
1056 | if (icd->iface == ici->nr) { | |
7dfff953 | 1057 | icd->parent = ici->v4l2_dev.dev; |
84cc2377 | 1058 | soc_camera_probe(icd); |
e55222ef GL |
1059 | } |
1060 | } | |
1061 | ||
2f9a0c88 | 1062 | mutex_unlock(&ici->host_lock); |
e55222ef GL |
1063 | } |
1064 | ||
40e2e092 GL |
1065 | #ifdef CONFIG_I2C_BOARDINFO |
1066 | static int soc_camera_init_i2c(struct soc_camera_device *icd, | |
1067 | struct soc_camera_link *icl) | |
e55222ef | 1068 | { |
40e2e092 | 1069 | struct i2c_client *client; |
7dfff953 | 1070 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
40e2e092 | 1071 | struct i2c_adapter *adap = i2c_get_adapter(icl->i2c_adapter_id); |
979ea1dd | 1072 | struct v4l2_subdev *subdev; |
e55222ef | 1073 | |
40e2e092 | 1074 | if (!adap) { |
7dfff953 | 1075 | dev_err(icd->pdev, "Cannot get I2C adapter #%d. No driver?\n", |
40e2e092 GL |
1076 | icl->i2c_adapter_id); |
1077 | goto ei2cga; | |
1078 | } | |
e55222ef | 1079 | |
2f0babb7 | 1080 | icl->board_info->platform_data = icl; |
e55222ef | 1081 | |
979ea1dd | 1082 | subdev = v4l2_i2c_new_subdev_board(&ici->v4l2_dev, adap, |
9a1f8b34 | 1083 | icl->board_info, NULL); |
d74f841c | 1084 | if (!subdev) |
40e2e092 | 1085 | goto ei2cnd; |
e55222ef | 1086 | |
c4ce6d14 | 1087 | client = v4l2_get_subdevdata(subdev); |
979ea1dd | 1088 | |
40e2e092 | 1089 | /* Use to_i2c_client(dev) to recover the i2c client */ |
7dfff953 | 1090 | icd->control = &client->dev; |
e55222ef | 1091 | |
40e2e092 GL |
1092 | return 0; |
1093 | ei2cnd: | |
1094 | i2c_put_adapter(adap); | |
1095 | ei2cga: | |
d74f841c | 1096 | return -ENODEV; |
e55222ef GL |
1097 | } |
1098 | ||
40e2e092 GL |
1099 | static void soc_camera_free_i2c(struct soc_camera_device *icd) |
1100 | { | |
1101 | struct i2c_client *client = | |
1102 | to_i2c_client(to_soc_camera_control(icd)); | |
c8dd7078 | 1103 | struct i2c_adapter *adap = client->adapter; |
7dfff953 GL |
1104 | |
1105 | icd->control = NULL; | |
979ea1dd | 1106 | v4l2_device_unregister_subdev(i2c_get_clientdata(client)); |
40e2e092 | 1107 | i2c_unregister_device(client); |
c8dd7078 | 1108 | i2c_put_adapter(adap); |
40e2e092 GL |
1109 | } |
1110 | #else | |
1111 | #define soc_camera_init_i2c(icd, icl) (-ENODEV) | |
1112 | #define soc_camera_free_i2c(icd) do {} while (0) | |
1113 | #endif | |
1114 | ||
979ea1dd | 1115 | static int soc_camera_video_start(struct soc_camera_device *icd); |
40e2e092 GL |
1116 | static int video_dev_create(struct soc_camera_device *icd); |
1117 | /* Called during host-driver probe */ | |
7dfff953 | 1118 | static int soc_camera_probe(struct soc_camera_device *icd) |
e55222ef | 1119 | { |
7dfff953 | 1120 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
40e2e092 | 1121 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
979ea1dd | 1122 | struct device *control = NULL; |
6a6c8786 | 1123 | struct v4l2_subdev *sd; |
760697be | 1124 | struct v4l2_mbus_framefmt mf; |
e55222ef GL |
1125 | int ret; |
1126 | ||
7dfff953 | 1127 | dev_info(icd->pdev, "Probing %s\n", dev_name(icd->pdev)); |
1c3bb743 | 1128 | |
ee02da64 HV |
1129 | /* |
1130 | * Currently the subdev with the largest number of controls (13) is | |
1131 | * ov6550. So let's pick 16 as a hint for the control handler. Note | |
1132 | * that this is a hint only: too large and you waste some memory, too | |
1133 | * small and there is a (very) small performance hit when looking up | |
1134 | * controls in the internal hash. | |
1135 | */ | |
1136 | ret = v4l2_ctrl_handler_init(&icd->ctrl_handler, 16); | |
1137 | if (ret < 0) | |
1138 | return ret; | |
1139 | ||
96e442c1 AP |
1140 | ret = regulator_bulk_get(icd->pdev, icl->num_regulators, |
1141 | icl->regulators); | |
1142 | if (ret < 0) | |
1143 | goto ereg; | |
1144 | ||
7705b6d8 GL |
1145 | /* The camera could have been already on, try to reset */ |
1146 | if (icl->reset) | |
1147 | icl->reset(icd->pdev); | |
1148 | ||
1149 | ret = ici->ops->add(icd); | |
1150 | if (ret < 0) | |
1151 | goto eadd; | |
1152 | ||
979ea1dd | 1153 | /* Must have icd->vdev before registering the device */ |
40e2e092 GL |
1154 | ret = video_dev_create(icd); |
1155 | if (ret < 0) | |
1156 | goto evdc; | |
1c3bb743 | 1157 | |
40e2e092 GL |
1158 | /* Non-i2c cameras, e.g., soc_camera_platform, have no board_info */ |
1159 | if (icl->board_info) { | |
1160 | ret = soc_camera_init_i2c(icd, icl); | |
1161 | if (ret < 0) | |
1162 | goto eadddev; | |
1163 | } else if (!icl->add_device || !icl->del_device) { | |
1c3bb743 | 1164 | ret = -EINVAL; |
40e2e092 GL |
1165 | goto eadddev; |
1166 | } else { | |
979ea1dd GL |
1167 | if (icl->module_name) |
1168 | ret = request_module(icl->module_name); | |
1169 | ||
7dfff953 | 1170 | ret = icl->add_device(icd); |
40e2e092 GL |
1171 | if (ret < 0) |
1172 | goto eadddev; | |
1c3bb743 | 1173 | |
96c75399 GL |
1174 | /* |
1175 | * FIXME: this is racy, have to use driver-binding notification, | |
1176 | * when it is available | |
1177 | */ | |
979ea1dd | 1178 | control = to_soc_camera_control(icd); |
08590b96 | 1179 | if (!control || !control->driver || !dev_get_drvdata(control) || |
979ea1dd | 1180 | !try_module_get(control->driver->owner)) { |
7dfff953 | 1181 | icl->del_device(icd); |
7ae77ee9 | 1182 | ret = -ENODEV; |
979ea1dd GL |
1183 | goto enodrv; |
1184 | } | |
40e2e092 | 1185 | } |
e55222ef | 1186 | |
24105ebc | 1187 | sd = soc_camera_to_subdev(icd); |
4c0b036d GL |
1188 | sd->grp_id = soc_camera_grp_id(icd); |
1189 | v4l2_set_subdev_hostdata(sd, icd); | |
24105ebc | 1190 | |
ab99cb18 PST |
1191 | ret = v4l2_ctrl_add_handler(&icd->ctrl_handler, sd->ctrl_handler, NULL); |
1192 | if (ret < 0) | |
ee02da64 HV |
1193 | goto ectrl; |
1194 | ||
fa48984e GL |
1195 | /* At this point client .probe() should have run already */ |
1196 | ret = soc_camera_init_user_formats(icd); | |
1197 | if (ret < 0) | |
1198 | goto eiufmt; | |
1199 | ||
fa48984e GL |
1200 | icd->field = V4L2_FIELD_ANY; |
1201 | ||
b6a633c1 GL |
1202 | /* |
1203 | * ..._video_start() will create a device node, video_register_device() | |
1204 | * itself is protected against concurrent open() calls, but we also have | |
1205 | * to protect our data. | |
1206 | */ | |
979ea1dd GL |
1207 | mutex_lock(&icd->video_lock); |
1208 | ||
1209 | ret = soc_camera_video_start(icd); | |
1210 | if (ret < 0) | |
1211 | goto evidstart; | |
1212 | ||
6a6c8786 | 1213 | /* Try to improve our guess of a reasonable window format */ |
760697be GL |
1214 | if (!v4l2_subdev_call(sd, video, g_mbus_fmt, &mf)) { |
1215 | icd->user_width = mf.width; | |
1216 | icd->user_height = mf.height; | |
1217 | icd->colorspace = mf.colorspace; | |
1218 | icd->field = mf.field; | |
6a6c8786 GL |
1219 | } |
1220 | ||
979ea1dd GL |
1221 | ici->ops->remove(icd); |
1222 | ||
979ea1dd | 1223 | mutex_unlock(&icd->video_lock); |
025c18a1 | 1224 | |
40e2e092 | 1225 | return 0; |
e55222ef | 1226 | |
979ea1dd GL |
1227 | evidstart: |
1228 | mutex_unlock(&icd->video_lock); | |
fa48984e GL |
1229 | soc_camera_free_user_formats(icd); |
1230 | eiufmt: | |
ee02da64 | 1231 | ectrl: |
979ea1dd | 1232 | if (icl->board_info) { |
40e2e092 | 1233 | soc_camera_free_i2c(icd); |
979ea1dd | 1234 | } else { |
7dfff953 | 1235 | icl->del_device(icd); |
979ea1dd GL |
1236 | module_put(control->driver->owner); |
1237 | } | |
1238 | enodrv: | |
40e2e092 GL |
1239 | eadddev: |
1240 | video_device_release(icd->vdev); | |
7b9d8c3c | 1241 | icd->vdev = NULL; |
40e2e092 | 1242 | evdc: |
7705b6d8 GL |
1243 | ici->ops->remove(icd); |
1244 | eadd: | |
96e442c1 AP |
1245 | regulator_bulk_free(icl->num_regulators, icl->regulators); |
1246 | ereg: | |
ee02da64 | 1247 | v4l2_ctrl_handler_free(&icd->ctrl_handler); |
e55222ef GL |
1248 | return ret; |
1249 | } | |
1250 | ||
5d28d525 GL |
1251 | /* |
1252 | * This is called on device_unregister, which only means we have to disconnect | |
1253 | * from the host, but not remove ourselves from the device list | |
1254 | */ | |
7dfff953 | 1255 | static int soc_camera_remove(struct soc_camera_device *icd) |
e55222ef | 1256 | { |
40e2e092 GL |
1257 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
1258 | struct video_device *vdev = icd->vdev; | |
e55222ef | 1259 | |
7dfff953 | 1260 | BUG_ON(!icd->parent); |
e55222ef | 1261 | |
ee02da64 | 1262 | v4l2_ctrl_handler_free(&icd->ctrl_handler); |
40e2e092 | 1263 | if (vdev) { |
40e2e092 GL |
1264 | video_unregister_device(vdev); |
1265 | icd->vdev = NULL; | |
40e2e092 GL |
1266 | } |
1267 | ||
979ea1dd | 1268 | if (icl->board_info) { |
40e2e092 | 1269 | soc_camera_free_i2c(icd); |
979ea1dd | 1270 | } else { |
7dfff953 | 1271 | struct device_driver *drv = to_soc_camera_control(icd)->driver; |
979ea1dd | 1272 | if (drv) { |
7dfff953 | 1273 | icl->del_device(icd); |
979ea1dd GL |
1274 | module_put(drv->owner); |
1275 | } | |
1276 | } | |
fa48984e | 1277 | soc_camera_free_user_formats(icd); |
025c18a1 | 1278 | |
96e442c1 AP |
1279 | regulator_bulk_free(icl->num_regulators, icl->regulators); |
1280 | ||
e55222ef GL |
1281 | return 0; |
1282 | } | |
1283 | ||
6a6c8786 GL |
1284 | static int default_cropcap(struct soc_camera_device *icd, |
1285 | struct v4l2_cropcap *a) | |
1286 | { | |
1287 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1288 | return v4l2_subdev_call(sd, video, cropcap, a); | |
1289 | } | |
1290 | ||
1291 | static int default_g_crop(struct soc_camera_device *icd, struct v4l2_crop *a) | |
1292 | { | |
1293 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1294 | return v4l2_subdev_call(sd, video, g_crop, a); | |
1295 | } | |
1296 | ||
4f996594 | 1297 | static int default_s_crop(struct soc_camera_device *icd, const struct v4l2_crop *a) |
6a6c8786 GL |
1298 | { |
1299 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1300 | return v4l2_subdev_call(sd, video, s_crop, a); | |
1301 | } | |
1302 | ||
06e17821 JK |
1303 | static int default_g_parm(struct soc_camera_device *icd, |
1304 | struct v4l2_streamparm *parm) | |
1305 | { | |
1306 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1307 | return v4l2_subdev_call(sd, video, g_parm, parm); | |
1308 | } | |
1309 | ||
1310 | static int default_s_parm(struct soc_camera_device *icd, | |
1311 | struct v4l2_streamparm *parm) | |
1312 | { | |
1313 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1314 | return v4l2_subdev_call(sd, video, s_parm, parm); | |
1315 | } | |
1316 | ||
ad3537b5 GL |
1317 | static int default_enum_framesizes(struct soc_camera_device *icd, |
1318 | struct v4l2_frmsizeenum *fsize) | |
ed5b65dc QX |
1319 | { |
1320 | int ret; | |
1321 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1322 | const struct soc_camera_format_xlate *xlate; | |
1323 | __u32 pixfmt = fsize->pixel_format; | |
1324 | struct v4l2_frmsizeenum fsize_mbus = *fsize; | |
1325 | ||
1326 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); | |
1327 | if (!xlate) | |
1328 | return -EINVAL; | |
1329 | /* map xlate-code to pixel_format, sensor only handle xlate-code*/ | |
1330 | fsize_mbus.pixel_format = xlate->code; | |
1331 | ||
9633c086 | 1332 | ret = v4l2_subdev_call(sd, video, enum_framesizes, &fsize_mbus); |
ed5b65dc QX |
1333 | if (ret < 0) |
1334 | return ret; | |
1335 | ||
1336 | *fsize = fsize_mbus; | |
1337 | fsize->pixel_format = pixfmt; | |
1338 | ||
1339 | return 0; | |
1340 | } | |
1341 | ||
b8d9904c | 1342 | int soc_camera_host_register(struct soc_camera_host *ici) |
e55222ef | 1343 | { |
e55222ef | 1344 | struct soc_camera_host *ix; |
979ea1dd | 1345 | int ret; |
e55222ef | 1346 | |
64f5905e GL |
1347 | if (!ici || !ici->ops || |
1348 | !ici->ops->try_fmt || | |
1349 | !ici->ops->set_fmt || | |
1350 | !ici->ops->set_bus_param || | |
1351 | !ici->ops->querycap || | |
592c2aba GL |
1352 | ((!ici->ops->init_videobuf || |
1353 | !ici->ops->reqbufs) && | |
1354 | !ici->ops->init_videobuf2) || | |
64f5905e GL |
1355 | !ici->ops->add || |
1356 | !ici->ops->remove || | |
eff505fa | 1357 | !ici->ops->poll || |
979ea1dd | 1358 | !ici->v4l2_dev.dev) |
e55222ef GL |
1359 | return -EINVAL; |
1360 | ||
6a6c8786 GL |
1361 | if (!ici->ops->set_crop) |
1362 | ici->ops->set_crop = default_s_crop; | |
1363 | if (!ici->ops->get_crop) | |
1364 | ici->ops->get_crop = default_g_crop; | |
1365 | if (!ici->ops->cropcap) | |
1366 | ici->ops->cropcap = default_cropcap; | |
06e17821 JK |
1367 | if (!ici->ops->set_parm) |
1368 | ici->ops->set_parm = default_s_parm; | |
1369 | if (!ici->ops->get_parm) | |
1370 | ici->ops->get_parm = default_g_parm; | |
ad3537b5 GL |
1371 | if (!ici->ops->enum_framesizes) |
1372 | ici->ops->enum_framesizes = default_enum_framesizes; | |
6a6c8786 | 1373 | |
e55222ef GL |
1374 | mutex_lock(&list_lock); |
1375 | list_for_each_entry(ix, &hosts, list) { | |
1376 | if (ix->nr == ici->nr) { | |
979ea1dd GL |
1377 | ret = -EBUSY; |
1378 | goto edevreg; | |
e55222ef GL |
1379 | } |
1380 | } | |
1381 | ||
979ea1dd GL |
1382 | ret = v4l2_device_register(ici->v4l2_dev.dev, &ici->v4l2_dev); |
1383 | if (ret < 0) | |
1384 | goto edevreg; | |
eff505fa | 1385 | |
e55222ef GL |
1386 | list_add_tail(&ici->list, &hosts); |
1387 | mutex_unlock(&list_lock); | |
1388 | ||
2f9a0c88 | 1389 | mutex_init(&ici->host_lock); |
e55222ef GL |
1390 | scan_add_host(ici); |
1391 | ||
1392 | return 0; | |
979ea1dd GL |
1393 | |
1394 | edevreg: | |
1395 | mutex_unlock(&list_lock); | |
1396 | return ret; | |
e55222ef GL |
1397 | } |
1398 | EXPORT_SYMBOL(soc_camera_host_register); | |
1399 | ||
1400 | /* Unregister all clients! */ | |
1401 | void soc_camera_host_unregister(struct soc_camera_host *ici) | |
1402 | { | |
1403 | struct soc_camera_device *icd; | |
1404 | ||
1405 | mutex_lock(&list_lock); | |
1406 | ||
1407 | list_del(&ici->list); | |
7dfff953 GL |
1408 | list_for_each_entry(icd, &devices, list) |
1409 | if (icd->iface == ici->nr && to_soc_camera_control(icd)) | |
1410 | soc_camera_remove(icd); | |
e55222ef GL |
1411 | |
1412 | mutex_unlock(&list_lock); | |
1413 | ||
979ea1dd | 1414 | v4l2_device_unregister(&ici->v4l2_dev); |
e55222ef GL |
1415 | } |
1416 | EXPORT_SYMBOL(soc_camera_host_unregister); | |
1417 | ||
1418 | /* Image capture device */ | |
40e2e092 | 1419 | static int soc_camera_device_register(struct soc_camera_device *icd) |
e55222ef GL |
1420 | { |
1421 | struct soc_camera_device *ix; | |
1422 | int num = -1, i; | |
1423 | ||
e55222ef GL |
1424 | for (i = 0; i < 256 && num < 0; i++) { |
1425 | num = i; | |
40e2e092 | 1426 | /* Check if this index is available on this interface */ |
e55222ef GL |
1427 | list_for_each_entry(ix, &devices, list) { |
1428 | if (ix->iface == icd->iface && ix->devnum == i) { | |
1429 | num = -1; | |
1430 | break; | |
1431 | } | |
1432 | } | |
1433 | } | |
1434 | ||
1435 | if (num < 0) | |
5d28d525 GL |
1436 | /* |
1437 | * ok, we have 256 cameras on this host... | |
1438 | * man, stay reasonable... | |
1439 | */ | |
e55222ef GL |
1440 | return -ENOMEM; |
1441 | ||
64ff9ba5 | 1442 | icd->devnum = num; |
64f5905e GL |
1443 | icd->use_count = 0; |
1444 | icd->host_priv = NULL; | |
1c3bb743 | 1445 | mutex_init(&icd->video_lock); |
e55222ef | 1446 | |
40e2e092 GL |
1447 | list_add_tail(&icd->list, &devices); |
1448 | ||
1449 | return 0; | |
e55222ef | 1450 | } |
e55222ef | 1451 | |
a399810c HV |
1452 | static const struct v4l2_ioctl_ops soc_camera_ioctl_ops = { |
1453 | .vidioc_querycap = soc_camera_querycap, | |
7ae77ee9 | 1454 | .vidioc_try_fmt_vid_cap = soc_camera_try_fmt_vid_cap, |
a399810c | 1455 | .vidioc_g_fmt_vid_cap = soc_camera_g_fmt_vid_cap, |
a399810c | 1456 | .vidioc_s_fmt_vid_cap = soc_camera_s_fmt_vid_cap, |
7ae77ee9 | 1457 | .vidioc_enum_fmt_vid_cap = soc_camera_enum_fmt_vid_cap, |
a399810c HV |
1458 | .vidioc_enum_input = soc_camera_enum_input, |
1459 | .vidioc_g_input = soc_camera_g_input, | |
1460 | .vidioc_s_input = soc_camera_s_input, | |
1461 | .vidioc_s_std = soc_camera_s_std, | |
2f0babb7 | 1462 | .vidioc_g_std = soc_camera_g_std, |
ad3537b5 | 1463 | .vidioc_enum_framesizes = soc_camera_enum_framesizes, |
a399810c | 1464 | .vidioc_reqbufs = soc_camera_reqbufs, |
a399810c HV |
1465 | .vidioc_querybuf = soc_camera_querybuf, |
1466 | .vidioc_qbuf = soc_camera_qbuf, | |
1467 | .vidioc_dqbuf = soc_camera_dqbuf, | |
7ae77ee9 GL |
1468 | .vidioc_create_bufs = soc_camera_create_bufs, |
1469 | .vidioc_prepare_buf = soc_camera_prepare_buf, | |
a399810c HV |
1470 | .vidioc_streamon = soc_camera_streamon, |
1471 | .vidioc_streamoff = soc_camera_streamoff, | |
a399810c HV |
1472 | .vidioc_cropcap = soc_camera_cropcap, |
1473 | .vidioc_g_crop = soc_camera_g_crop, | |
1474 | .vidioc_s_crop = soc_camera_s_crop, | |
3bfb4100 GL |
1475 | .vidioc_g_selection = soc_camera_g_selection, |
1476 | .vidioc_s_selection = soc_camera_s_selection, | |
c9f6ef69 GL |
1477 | .vidioc_g_parm = soc_camera_g_parm, |
1478 | .vidioc_s_parm = soc_camera_s_parm, | |
a399810c HV |
1479 | .vidioc_g_chip_ident = soc_camera_g_chip_ident, |
1480 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
1481 | .vidioc_g_register = soc_camera_g_register, | |
1482 | .vidioc_s_register = soc_camera_s_register, | |
1483 | #endif | |
1484 | }; | |
1485 | ||
40e2e092 | 1486 | static int video_dev_create(struct soc_camera_device *icd) |
e55222ef | 1487 | { |
7dfff953 | 1488 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
40e2e092 | 1489 | struct video_device *vdev = video_device_alloc(); |
e55222ef | 1490 | |
e55222ef | 1491 | if (!vdev) |
40e2e092 | 1492 | return -ENOMEM; |
e55222ef GL |
1493 | |
1494 | strlcpy(vdev->name, ici->drv_name, sizeof(vdev->name)); | |
1c3bb743 | 1495 | |
7dfff953 | 1496 | vdev->parent = icd->pdev; |
e55222ef GL |
1497 | vdev->current_norm = V4L2_STD_UNKNOWN; |
1498 | vdev->fops = &soc_camera_fops; | |
a399810c | 1499 | vdev->ioctl_ops = &soc_camera_ioctl_ops; |
e55222ef | 1500 | vdev->release = video_device_release; |
40e2e092 | 1501 | vdev->tvnorms = V4L2_STD_UNKNOWN; |
ee02da64 | 1502 | vdev->ctrl_handler = &icd->ctrl_handler; |
7a05dfed | 1503 | vdev->lock = &icd->video_lock; |
e55222ef | 1504 | |
e55222ef GL |
1505 | icd->vdev = vdev; |
1506 | ||
1507 | return 0; | |
40e2e092 | 1508 | } |
e55222ef | 1509 | |
40e2e092 | 1510 | /* |
979ea1dd | 1511 | * Called from soc_camera_probe() above (with .video_lock held???) |
40e2e092 | 1512 | */ |
979ea1dd | 1513 | static int soc_camera_video_start(struct soc_camera_device *icd) |
40e2e092 | 1514 | { |
d364ee4f | 1515 | const struct device_type *type = icd->vdev->dev.type; |
979ea1dd | 1516 | int ret; |
40e2e092 | 1517 | |
7dfff953 | 1518 | if (!icd->parent) |
40e2e092 GL |
1519 | return -ENODEV; |
1520 | ||
46b21094 | 1521 | ret = video_register_device(icd->vdev, VFL_TYPE_GRABBER, -1); |
979ea1dd | 1522 | if (ret < 0) { |
7dfff953 | 1523 | dev_err(icd->pdev, "video_register_device failed: %d\n", ret); |
979ea1dd GL |
1524 | return ret; |
1525 | } | |
40e2e092 | 1526 | |
4f9fb5ed MCC |
1527 | /* Restore device type, possibly set by the subdevice driver */ |
1528 | icd->vdev->dev.type = type; | |
1529 | ||
979ea1dd | 1530 | return 0; |
e55222ef | 1531 | } |
e55222ef | 1532 | |
4c62e976 | 1533 | static int soc_camera_pdrv_probe(struct platform_device *pdev) |
0fd327bd | 1534 | { |
40e2e092 GL |
1535 | struct soc_camera_link *icl = pdev->dev.platform_data; |
1536 | struct soc_camera_device *icd; | |
0fd327bd | 1537 | |
40e2e092 GL |
1538 | if (!icl) |
1539 | return -EINVAL; | |
0fd327bd | 1540 | |
02249369 | 1541 | icd = devm_kzalloc(&pdev->dev, sizeof(*icd), GFP_KERNEL); |
40e2e092 GL |
1542 | if (!icd) |
1543 | return -ENOMEM; | |
0fd327bd | 1544 | |
40e2e092 | 1545 | icd->iface = icl->bus_id; |
7dfff953 | 1546 | icd->link = icl; |
979ea1dd | 1547 | icd->pdev = &pdev->dev; |
40e2e092 | 1548 | platform_set_drvdata(pdev, icd); |
0fd327bd | 1549 | |
6a6c8786 GL |
1550 | icd->user_width = DEFAULT_WIDTH; |
1551 | icd->user_height = DEFAULT_HEIGHT; | |
1552 | ||
02249369 | 1553 | return soc_camera_device_register(icd); |
c41debaf | 1554 | } |
0fd327bd | 1555 | |
5d28d525 GL |
1556 | /* |
1557 | * Only called on rmmod for each platform device, since they are not | |
40e2e092 | 1558 | * hot-pluggable. Now we know, that all our users - hosts and devices have |
5d28d525 GL |
1559 | * been unloaded already |
1560 | */ | |
4c62e976 | 1561 | static int soc_camera_pdrv_remove(struct platform_device *pdev) |
c41debaf | 1562 | { |
40e2e092 | 1563 | struct soc_camera_device *icd = platform_get_drvdata(pdev); |
c41debaf | 1564 | |
40e2e092 | 1565 | if (!icd) |
c41debaf GL |
1566 | return -EINVAL; |
1567 | ||
7dfff953 | 1568 | list_del(&icd->list); |
c41debaf | 1569 | |
0fd327bd GL |
1570 | return 0; |
1571 | } | |
1572 | ||
1573 | static struct platform_driver __refdata soc_camera_pdrv = { | |
1858c99d | 1574 | .probe = soc_camera_pdrv_probe, |
4c62e976 | 1575 | .remove = soc_camera_pdrv_remove, |
40e2e092 GL |
1576 | .driver = { |
1577 | .name = "soc-camera-pdrv", | |
1578 | .owner = THIS_MODULE, | |
0fd327bd GL |
1579 | }, |
1580 | }; | |
1581 | ||
ec0341b3 | 1582 | module_platform_driver(soc_camera_pdrv); |
e55222ef GL |
1583 | |
1584 | MODULE_DESCRIPTION("Image capture bus driver"); | |
1585 | MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>"); | |
1586 | MODULE_LICENSE("GPL"); | |
0fd327bd | 1587 | MODULE_ALIAS("platform:soc-camera-pdrv"); |