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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> | |
40e2e092 | 24 | #include <linux/module.h> |
e09da11d | 25 | #include <linux/mutex.h> |
0fd327bd | 26 | #include <linux/platform_device.h> |
e09da11d | 27 | #include <linux/pm_runtime.h> |
96e442c1 | 28 | #include <linux/regulator/consumer.h> |
5a0e3ad6 | 29 | #include <linux/slab.h> |
e55222ef GL |
30 | #include <linux/vmalloc.h> |
31 | ||
0fd327bd | 32 | #include <media/soc_camera.h> |
e09da11d GL |
33 | #include <media/soc_mediabus.h> |
34 | #include <media/v4l2-async.h> | |
9aea470b | 35 | #include <media/v4l2-clk.h> |
e55222ef | 36 | #include <media/v4l2-common.h> |
0fd327bd | 37 | #include <media/v4l2-ioctl.h> |
40e2e092 | 38 | #include <media/v4l2-dev.h> |
092d3921 | 39 | #include <media/videobuf-core.h> |
592c2aba | 40 | #include <media/videobuf2-core.h> |
e55222ef | 41 | |
df2ed070 GL |
42 | /* Default to VGA resolution */ |
43 | #define DEFAULT_WIDTH 640 | |
44 | #define DEFAULT_HEIGHT 480 | |
45 | ||
aee5c2f1 GL |
46 | #define is_streaming(ici, icd) \ |
47 | (((ici)->ops->init_videobuf) ? \ | |
48 | (icd)->vb_vidq.streaming : \ | |
49 | vb2_is_streaming(&(icd)->vb2_vidq)) | |
50 | ||
e09da11d GL |
51 | #define MAP_MAX_NUM 32 |
52 | static DECLARE_BITMAP(device_map, MAP_MAX_NUM); | |
e55222ef GL |
53 | static LIST_HEAD(hosts); |
54 | static LIST_HEAD(devices); | |
e09da11d GL |
55 | /* |
56 | * Protects lists and bitmaps of hosts and devices. | |
57 | * Lock nesting: Ok to take ->host_lock under list_lock. | |
58 | */ | |
59 | static DEFINE_MUTEX(list_lock); | |
60 | ||
61 | struct soc_camera_async_client { | |
62 | struct v4l2_async_subdev *sensor; | |
63 | struct v4l2_async_notifier notifier; | |
64 | struct platform_device *pdev; | |
65 | struct list_head list; /* needed for clean up */ | |
66 | }; | |
67 | ||
68 | static int soc_camera_video_start(struct soc_camera_device *icd); | |
69 | static int video_dev_create(struct soc_camera_device *icd); | |
e55222ef | 70 | |
9aea470b GL |
71 | int soc_camera_power_on(struct device *dev, struct soc_camera_subdev_desc *ssdd, |
72 | struct v4l2_clk *clk) | |
96e442c1 | 73 | { |
40f07533 GL |
74 | int ret; |
75 | bool clock_toggle; | |
76 | ||
77 | if (clk && (!ssdd->unbalanced_power || | |
78 | !test_and_set_bit(0, &ssdd->clock_state))) { | |
79 | ret = v4l2_clk_enable(clk); | |
80 | if (ret < 0) { | |
81 | dev_err(dev, "Cannot enable clock: %d\n", ret); | |
82 | return ret; | |
83 | } | |
84 | clock_toggle = true; | |
85 | } else { | |
86 | clock_toggle = false; | |
9aea470b | 87 | } |
40f07533 | 88 | |
d3f884a7 GL |
89 | ret = regulator_bulk_enable(ssdd->sd_pdata.num_regulators, |
90 | ssdd->sd_pdata.regulators); | |
3dcc731a | 91 | if (ret < 0) { |
4ec10bac | 92 | dev_err(dev, "Cannot enable regulators\n"); |
e09da11d | 93 | goto eregenable; |
3dcc731a | 94 | } |
96e442c1 | 95 | |
25a34811 GL |
96 | if (ssdd->power) { |
97 | ret = ssdd->power(dev, 1); | |
96e442c1 | 98 | if (ret < 0) { |
4ec10bac | 99 | dev_err(dev, |
96e442c1 | 100 | "Platform failed to power-on the camera.\n"); |
9aea470b | 101 | goto epwron; |
96e442c1 | 102 | } |
3dcc731a GL |
103 | } |
104 | ||
9aea470b GL |
105 | return 0; |
106 | ||
107 | epwron: | |
d3f884a7 GL |
108 | regulator_bulk_disable(ssdd->sd_pdata.num_regulators, |
109 | ssdd->sd_pdata.regulators); | |
9aea470b | 110 | eregenable: |
40f07533 | 111 | if (clock_toggle) |
9aea470b GL |
112 | v4l2_clk_disable(clk); |
113 | ||
3dcc731a GL |
114 | return ret; |
115 | } | |
4ec10bac | 116 | EXPORT_SYMBOL(soc_camera_power_on); |
3dcc731a | 117 | |
9aea470b GL |
118 | int soc_camera_power_off(struct device *dev, struct soc_camera_subdev_desc *ssdd, |
119 | struct v4l2_clk *clk) | |
3dcc731a | 120 | { |
24592adc LP |
121 | int ret = 0; |
122 | int err; | |
7b9d8c3c | 123 | |
25a34811 GL |
124 | if (ssdd->power) { |
125 | err = ssdd->power(dev, 0); | |
24592adc | 126 | if (err < 0) { |
4ec10bac | 127 | dev_err(dev, |
96e442c1 | 128 | "Platform failed to power-off the camera.\n"); |
4ec10bac | 129 | ret = err; |
96e442c1 | 130 | } |
96e442c1 AP |
131 | } |
132 | ||
d3f884a7 GL |
133 | err = regulator_bulk_disable(ssdd->sd_pdata.num_regulators, |
134 | ssdd->sd_pdata.regulators); | |
24592adc | 135 | if (err < 0) { |
4ec10bac | 136 | dev_err(dev, "Cannot disable regulators\n"); |
24592adc LP |
137 | ret = ret ? : err; |
138 | } | |
3dcc731a | 139 | |
40f07533 | 140 | if (clk && (!ssdd->unbalanced_power || test_and_clear_bit(0, &ssdd->clock_state))) |
9aea470b GL |
141 | v4l2_clk_disable(clk); |
142 | ||
3dcc731a | 143 | return ret; |
96e442c1 | 144 | } |
4ec10bac LP |
145 | EXPORT_SYMBOL(soc_camera_power_off); |
146 | ||
e09da11d GL |
147 | int soc_camera_power_init(struct device *dev, struct soc_camera_subdev_desc *ssdd) |
148 | { | |
23272427 | 149 | /* Should not have any effect in synchronous case */ |
d3f884a7 GL |
150 | return devm_regulator_bulk_get(dev, ssdd->sd_pdata.num_regulators, |
151 | ssdd->sd_pdata.regulators); | |
e09da11d GL |
152 | } |
153 | EXPORT_SYMBOL(soc_camera_power_init); | |
154 | ||
4ec10bac LP |
155 | static int __soc_camera_power_on(struct soc_camera_device *icd) |
156 | { | |
157 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
158 | int ret; | |
159 | ||
160 | ret = v4l2_subdev_call(sd, core, s_power, 1); | |
161 | if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) | |
162 | return ret; | |
163 | ||
164 | return 0; | |
165 | } | |
166 | ||
167 | static int __soc_camera_power_off(struct soc_camera_device *icd) | |
168 | { | |
169 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
170 | int ret; | |
171 | ||
172 | ret = v4l2_subdev_call(sd, core, s_power, 0); | |
173 | if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) | |
174 | return ret; | |
175 | ||
176 | return 0; | |
177 | } | |
96e442c1 | 178 | |
c2786ad2 GL |
179 | const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc( |
180 | struct soc_camera_device *icd, unsigned int fourcc) | |
181 | { | |
182 | unsigned int i; | |
183 | ||
184 | for (i = 0; i < icd->num_user_formats; i++) | |
185 | if (icd->user_formats[i].host_fmt->fourcc == fourcc) | |
186 | return icd->user_formats + i; | |
187 | return NULL; | |
188 | } | |
189 | EXPORT_SYMBOL(soc_camera_xlate_by_fourcc); | |
190 | ||
32c69fcc GL |
191 | /** |
192 | * soc_camera_apply_board_flags() - apply platform SOCAM_SENSOR_INVERT_* flags | |
25a34811 | 193 | * @ssdd: camera platform parameters |
32c69fcc GL |
194 | * @cfg: media bus configuration |
195 | * @return: resulting flags | |
196 | */ | |
25a34811 | 197 | unsigned long soc_camera_apply_board_flags(struct soc_camera_subdev_desc *ssdd, |
32c69fcc GL |
198 | const struct v4l2_mbus_config *cfg) |
199 | { | |
200 | unsigned long f, flags = cfg->flags; | |
201 | ||
202 | /* If only one of the two polarities is supported, switch to the opposite */ | |
25a34811 | 203 | if (ssdd->flags & SOCAM_SENSOR_INVERT_HSYNC) { |
32c69fcc GL |
204 | f = flags & (V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW); |
205 | if (f == V4L2_MBUS_HSYNC_ACTIVE_HIGH || f == V4L2_MBUS_HSYNC_ACTIVE_LOW) | |
206 | flags ^= V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW; | |
207 | } | |
208 | ||
25a34811 | 209 | if (ssdd->flags & SOCAM_SENSOR_INVERT_VSYNC) { |
32c69fcc GL |
210 | f = flags & (V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW); |
211 | if (f == V4L2_MBUS_VSYNC_ACTIVE_HIGH || f == V4L2_MBUS_VSYNC_ACTIVE_LOW) | |
212 | flags ^= V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW; | |
213 | } | |
214 | ||
25a34811 | 215 | if (ssdd->flags & SOCAM_SENSOR_INVERT_PCLK) { |
32c69fcc GL |
216 | f = flags & (V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING); |
217 | if (f == V4L2_MBUS_PCLK_SAMPLE_RISING || f == V4L2_MBUS_PCLK_SAMPLE_FALLING) | |
218 | flags ^= V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING; | |
219 | } | |
220 | ||
221 | return flags; | |
222 | } | |
223 | EXPORT_SYMBOL(soc_camera_apply_board_flags); | |
224 | ||
dca6b6d1 SA |
225 | #define pixfmtstr(x) (x) & 0xff, ((x) >> 8) & 0xff, ((x) >> 16) & 0xff, \ |
226 | ((x) >> 24) & 0xff | |
227 | ||
228 | static int soc_camera_try_fmt(struct soc_camera_device *icd, | |
229 | struct v4l2_format *f) | |
230 | { | |
7dfff953 | 231 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
bed8d803 | 232 | const struct soc_camera_format_xlate *xlate; |
dca6b6d1 SA |
233 | struct v4l2_pix_format *pix = &f->fmt.pix; |
234 | int ret; | |
235 | ||
7dfff953 | 236 | dev_dbg(icd->pdev, "TRY_FMT(%c%c%c%c, %ux%u)\n", |
dca6b6d1 SA |
237 | pixfmtstr(pix->pixelformat), pix->width, pix->height); |
238 | ||
a70a6c43 AW |
239 | if (pix->pixelformat != V4L2_PIX_FMT_JPEG && |
240 | !(ici->capabilities & SOCAM_HOST_CAP_STRIDE)) { | |
914f05c8 LP |
241 | pix->bytesperline = 0; |
242 | pix->sizeimage = 0; | |
243 | } | |
dca6b6d1 SA |
244 | |
245 | ret = ici->ops->try_fmt(icd, f); | |
246 | if (ret < 0) | |
247 | return ret; | |
248 | ||
bed8d803 LP |
249 | xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat); |
250 | if (!xlate) | |
251 | return -EINVAL; | |
dca6b6d1 | 252 | |
bed8d803 LP |
253 | ret = soc_mbus_bytes_per_line(pix->width, xlate->host_fmt); |
254 | if (ret < 0) | |
255 | return ret; | |
dca6b6d1 | 256 | |
bed8d803 LP |
257 | pix->bytesperline = max_t(u32, pix->bytesperline, ret); |
258 | ||
259 | ret = soc_mbus_image_size(xlate->host_fmt, pix->bytesperline, | |
260 | pix->height); | |
261 | if (ret < 0) | |
262 | return ret; | |
263 | ||
264 | pix->sizeimage = max_t(u32, pix->sizeimage, ret); | |
dca6b6d1 SA |
265 | |
266 | return 0; | |
267 | } | |
268 | ||
72937890 | 269 | static int soc_camera_try_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 270 | struct v4l2_format *f) |
e55222ef | 271 | { |
57bee29d | 272 | struct soc_camera_device *icd = file->private_data; |
e55222ef GL |
273 | |
274 | WARN_ON(priv != file->private_data); | |
275 | ||
d366d4a0 GL |
276 | /* Only single-plane capture is supported so far */ |
277 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
278 | return -EINVAL; | |
279 | ||
ad5f2e85 | 280 | /* limit format to hardware capabilities */ |
dca6b6d1 | 281 | return soc_camera_try_fmt(icd, f); |
e55222ef GL |
282 | } |
283 | ||
284 | static int soc_camera_enum_input(struct file *file, void *priv, | |
285 | struct v4l2_input *inp) | |
286 | { | |
287 | if (inp->index != 0) | |
288 | return -EINVAL; | |
289 | ||
8318a64b GL |
290 | /* default is camera */ |
291 | inp->type = V4L2_INPUT_TYPE_CAMERA; | |
8318a64b | 292 | strcpy(inp->name, "Camera"); |
e55222ef | 293 | |
8318a64b | 294 | return 0; |
e55222ef GL |
295 | } |
296 | ||
297 | static int soc_camera_g_input(struct file *file, void *priv, unsigned int *i) | |
298 | { | |
299 | *i = 0; | |
300 | ||
301 | return 0; | |
302 | } | |
303 | ||
304 | static int soc_camera_s_input(struct file *file, void *priv, unsigned int i) | |
305 | { | |
306 | if (i > 0) | |
307 | return -EINVAL; | |
308 | ||
309 | return 0; | |
310 | } | |
311 | ||
314527ac | 312 | static int soc_camera_s_std(struct file *file, void *priv, v4l2_std_id a) |
e55222ef | 313 | { |
57bee29d | 314 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 315 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
513791ab | 316 | |
8774bed9 | 317 | return v4l2_subdev_call(sd, video, s_std, a); |
e55222ef GL |
318 | } |
319 | ||
2f0babb7 GL |
320 | static int soc_camera_g_std(struct file *file, void *priv, v4l2_std_id *a) |
321 | { | |
322 | struct soc_camera_device *icd = file->private_data; | |
323 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
324 | ||
8774bed9 | 325 | return v4l2_subdev_call(sd, video, g_std, a); |
2f0babb7 GL |
326 | } |
327 | ||
ad3537b5 | 328 | static int soc_camera_enum_framesizes(struct file *file, void *fh, |
ed5b65dc QX |
329 | struct v4l2_frmsizeenum *fsize) |
330 | { | |
331 | struct soc_camera_device *icd = file->private_data; | |
7dfff953 | 332 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
ed5b65dc | 333 | |
ad3537b5 | 334 | return ici->ops->enum_framesizes(icd, fsize); |
ed5b65dc QX |
335 | } |
336 | ||
e55222ef GL |
337 | static int soc_camera_reqbufs(struct file *file, void *priv, |
338 | struct v4l2_requestbuffers *p) | |
339 | { | |
340 | int ret; | |
57bee29d | 341 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 342 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
343 | |
344 | WARN_ON(priv != file->private_data); | |
345 | ||
57bee29d GL |
346 | if (icd->streamer && icd->streamer != file) |
347 | return -EBUSY; | |
348 | ||
592c2aba GL |
349 | if (ici->ops->init_videobuf) { |
350 | ret = videobuf_reqbufs(&icd->vb_vidq, p); | |
351 | if (ret < 0) | |
352 | return ret; | |
353 | ||
354 | ret = ici->ops->reqbufs(icd, p); | |
355 | } else { | |
356 | ret = vb2_reqbufs(&icd->vb2_vidq, p); | |
357 | } | |
e55222ef | 358 | |
57bee29d GL |
359 | if (!ret && !icd->streamer) |
360 | icd->streamer = file; | |
361 | ||
362 | return ret; | |
e55222ef GL |
363 | } |
364 | ||
365 | static int soc_camera_querybuf(struct file *file, void *priv, | |
366 | struct v4l2_buffer *p) | |
367 | { | |
57bee29d | 368 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 369 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
370 | |
371 | WARN_ON(priv != file->private_data); | |
372 | ||
592c2aba GL |
373 | if (ici->ops->init_videobuf) |
374 | return videobuf_querybuf(&icd->vb_vidq, p); | |
375 | else | |
376 | return vb2_querybuf(&icd->vb2_vidq, p); | |
e55222ef GL |
377 | } |
378 | ||
379 | static int soc_camera_qbuf(struct file *file, void *priv, | |
380 | struct v4l2_buffer *p) | |
381 | { | |
57bee29d | 382 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 383 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
384 | |
385 | WARN_ON(priv != file->private_data); | |
386 | ||
57bee29d GL |
387 | if (icd->streamer != file) |
388 | return -EBUSY; | |
389 | ||
592c2aba GL |
390 | if (ici->ops->init_videobuf) |
391 | return videobuf_qbuf(&icd->vb_vidq, p); | |
392 | else | |
393 | return vb2_qbuf(&icd->vb2_vidq, p); | |
e55222ef GL |
394 | } |
395 | ||
396 | static int soc_camera_dqbuf(struct file *file, void *priv, | |
397 | struct v4l2_buffer *p) | |
398 | { | |
57bee29d | 399 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 400 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
401 | |
402 | WARN_ON(priv != file->private_data); | |
403 | ||
57bee29d GL |
404 | if (icd->streamer != file) |
405 | return -EBUSY; | |
406 | ||
592c2aba GL |
407 | if (ici->ops->init_videobuf) |
408 | return videobuf_dqbuf(&icd->vb_vidq, p, file->f_flags & O_NONBLOCK); | |
409 | else | |
410 | return vb2_dqbuf(&icd->vb2_vidq, p, file->f_flags & O_NONBLOCK); | |
e55222ef GL |
411 | } |
412 | ||
7ae77ee9 GL |
413 | static int soc_camera_create_bufs(struct file *file, void *priv, |
414 | struct v4l2_create_buffers *create) | |
415 | { | |
416 | struct soc_camera_device *icd = file->private_data; | |
417 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
418 | ||
419 | /* videobuf2 only */ | |
420 | if (ici->ops->init_videobuf) | |
421 | return -EINVAL; | |
422 | else | |
423 | return vb2_create_bufs(&icd->vb2_vidq, create); | |
424 | } | |
425 | ||
426 | static int soc_camera_prepare_buf(struct file *file, void *priv, | |
427 | struct v4l2_buffer *b) | |
428 | { | |
429 | struct soc_camera_device *icd = file->private_data; | |
430 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
431 | ||
432 | /* videobuf2 only */ | |
433 | if (ici->ops->init_videobuf) | |
434 | return -EINVAL; | |
435 | else | |
436 | return vb2_prepare_buf(&icd->vb2_vidq, b); | |
437 | } | |
438 | ||
dd669e90 | 439 | /* Always entered with .host_lock held */ |
c2786ad2 GL |
440 | static int soc_camera_init_user_formats(struct soc_camera_device *icd) |
441 | { | |
760697be | 442 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
7dfff953 | 443 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
3805f201 HV |
444 | unsigned int i, fmts = 0, raw_fmts = 0; |
445 | int ret; | |
760697be GL |
446 | enum v4l2_mbus_pixelcode code; |
447 | ||
448 | while (!v4l2_subdev_call(sd, video, enum_mbus_fmt, raw_fmts, &code)) | |
449 | raw_fmts++; | |
c2786ad2 GL |
450 | |
451 | if (!ici->ops->get_formats) | |
452 | /* | |
453 | * Fallback mode - the host will have to serve all | |
454 | * sensor-provided formats one-to-one to the user | |
455 | */ | |
760697be | 456 | fmts = raw_fmts; |
c2786ad2 GL |
457 | else |
458 | /* | |
459 | * First pass - only count formats this host-sensor | |
460 | * configuration can provide | |
461 | */ | |
760697be | 462 | for (i = 0; i < raw_fmts; i++) { |
fa48984e GL |
463 | ret = ici->ops->get_formats(icd, i, NULL); |
464 | if (ret < 0) | |
465 | return ret; | |
466 | fmts += ret; | |
467 | } | |
c2786ad2 GL |
468 | |
469 | if (!fmts) | |
470 | return -ENXIO; | |
471 | ||
472 | icd->user_formats = | |
473 | vmalloc(fmts * sizeof(struct soc_camera_format_xlate)); | |
474 | if (!icd->user_formats) | |
475 | return -ENOMEM; | |
476 | ||
7dfff953 | 477 | dev_dbg(icd->pdev, "Found %d supported formats.\n", fmts); |
c2786ad2 GL |
478 | |
479 | /* Second pass - actually fill data formats */ | |
14df2cce | 480 | fmts = 0; |
760697be | 481 | for (i = 0; i < raw_fmts; i++) |
c2786ad2 | 482 | if (!ici->ops->get_formats) { |
760697be | 483 | v4l2_subdev_call(sd, video, enum_mbus_fmt, i, &code); |
d2dcad49 | 484 | icd->user_formats[fmts].host_fmt = |
760697be | 485 | soc_mbus_get_fmtdesc(code); |
d2dcad49 GL |
486 | if (icd->user_formats[fmts].host_fmt) |
487 | icd->user_formats[fmts++].code = code; | |
c2786ad2 | 488 | } else { |
fa48984e GL |
489 | ret = ici->ops->get_formats(icd, i, |
490 | &icd->user_formats[fmts]); | |
491 | if (ret < 0) | |
492 | goto egfmt; | |
493 | fmts += ret; | |
c2786ad2 GL |
494 | } |
495 | ||
d2dcad49 | 496 | icd->num_user_formats = fmts; |
760697be | 497 | icd->current_fmt = &icd->user_formats[0]; |
c2786ad2 GL |
498 | |
499 | return 0; | |
fa48984e GL |
500 | |
501 | egfmt: | |
fa48984e GL |
502 | vfree(icd->user_formats); |
503 | return ret; | |
c2786ad2 GL |
504 | } |
505 | ||
dd669e90 | 506 | /* Always entered with .host_lock held */ |
c2786ad2 GL |
507 | static void soc_camera_free_user_formats(struct soc_camera_device *icd) |
508 | { | |
7dfff953 | 509 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
fa48984e GL |
510 | |
511 | if (ici->ops->put_formats) | |
512 | ici->ops->put_formats(icd); | |
40e2e092 | 513 | icd->current_fmt = NULL; |
fa48984e | 514 | icd->num_user_formats = 0; |
c2786ad2 | 515 | vfree(icd->user_formats); |
40e2e092 | 516 | icd->user_formats = NULL; |
c2786ad2 GL |
517 | } |
518 | ||
760697be | 519 | /* Called with .vb_lock held, or from the first open(2), see comment there */ |
57bee29d | 520 | static int soc_camera_set_fmt(struct soc_camera_device *icd, |
df2ed070 GL |
521 | struct v4l2_format *f) |
522 | { | |
7dfff953 | 523 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
df2ed070 GL |
524 | struct v4l2_pix_format *pix = &f->fmt.pix; |
525 | int ret; | |
526 | ||
7dfff953 | 527 | dev_dbg(icd->pdev, "S_FMT(%c%c%c%c, %ux%u)\n", |
6a6c8786 GL |
528 | pixfmtstr(pix->pixelformat), pix->width, pix->height); |
529 | ||
df2ed070 | 530 | /* We always call try_fmt() before set_fmt() or set_crop() */ |
dca6b6d1 | 531 | ret = soc_camera_try_fmt(icd, f); |
df2ed070 GL |
532 | if (ret < 0) |
533 | return ret; | |
534 | ||
535 | ret = ici->ops->set_fmt(icd, f); | |
536 | if (ret < 0) { | |
537 | return ret; | |
538 | } else if (!icd->current_fmt || | |
760697be | 539 | icd->current_fmt->host_fmt->fourcc != pix->pixelformat) { |
7dfff953 | 540 | dev_err(icd->pdev, |
df2ed070 GL |
541 | "Host driver hasn't set up current format correctly!\n"); |
542 | return -EINVAL; | |
543 | } | |
544 | ||
6a6c8786 GL |
545 | icd->user_width = pix->width; |
546 | icd->user_height = pix->height; | |
0e4c180d SA |
547 | icd->bytesperline = pix->bytesperline; |
548 | icd->sizeimage = pix->sizeimage; | |
760697be | 549 | icd->colorspace = pix->colorspace; |
592c2aba GL |
550 | icd->field = pix->field; |
551 | if (ici->ops->init_videobuf) | |
552 | icd->vb_vidq.field = pix->field; | |
025c18a1 | 553 | |
7dfff953 | 554 | dev_dbg(icd->pdev, "set width: %d height: %d\n", |
6a6c8786 | 555 | icd->user_width, icd->user_height); |
df2ed070 GL |
556 | |
557 | /* set physical bus parameters */ | |
8843d119 | 558 | return ici->ops->set_bus_param(icd); |
df2ed070 GL |
559 | } |
560 | ||
f7f6ce2d GL |
561 | static int soc_camera_add_device(struct soc_camera_device *icd) |
562 | { | |
563 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
564 | int ret; | |
565 | ||
566 | if (ici->icd) | |
567 | return -EBUSY; | |
568 | ||
9aea470b | 569 | if (!icd->clk) { |
e09da11d | 570 | mutex_lock(&ici->clk_lock); |
9aea470b | 571 | ret = ici->ops->clock_start(ici); |
e09da11d | 572 | mutex_unlock(&ici->clk_lock); |
9aea470b GL |
573 | if (ret < 0) |
574 | return ret; | |
575 | } | |
a78fcc11 GL |
576 | |
577 | if (ici->ops->add) { | |
578 | ret = ici->ops->add(icd); | |
eb569cf9 | 579 | if (ret < 0) |
a78fcc11 | 580 | goto eadd; |
eb569cf9 GL |
581 | } |
582 | ||
eb569cf9 GL |
583 | ici->icd = icd; |
584 | ||
585 | return 0; | |
f7f6ce2d | 586 | |
eb569cf9 | 587 | eadd: |
e09da11d GL |
588 | if (!icd->clk) { |
589 | mutex_lock(&ici->clk_lock); | |
9aea470b | 590 | ici->ops->clock_stop(ici); |
e09da11d GL |
591 | mutex_unlock(&ici->clk_lock); |
592 | } | |
f7f6ce2d GL |
593 | return ret; |
594 | } | |
595 | ||
596 | static void soc_camera_remove_device(struct soc_camera_device *icd) | |
597 | { | |
598 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
599 | ||
600 | if (WARN_ON(icd != ici->icd)) | |
601 | return; | |
602 | ||
a78fcc11 GL |
603 | if (ici->ops->remove) |
604 | ici->ops->remove(icd); | |
e09da11d GL |
605 | if (!icd->clk) { |
606 | mutex_lock(&ici->clk_lock); | |
9aea470b | 607 | ici->ops->clock_stop(ici); |
e09da11d GL |
608 | mutex_unlock(&ici->clk_lock); |
609 | } | |
f7f6ce2d GL |
610 | ici->icd = NULL; |
611 | } | |
612 | ||
bec43661 | 613 | static int soc_camera_open(struct file *file) |
e55222ef | 614 | { |
979ea1dd | 615 | struct video_device *vdev = video_devdata(file); |
2400a1f8 | 616 | struct soc_camera_device *icd; |
9dc4e48f | 617 | struct soc_camera_host *ici; |
e55222ef GL |
618 | int ret; |
619 | ||
7d051b35 GL |
620 | /* |
621 | * Don't mess with the host during probe: wait until the loop in | |
2400a1f8 GL |
622 | * scan_add_host() completes. Also protect against a race with |
623 | * soc_camera_host_unregister(). | |
7d051b35 GL |
624 | */ |
625 | if (mutex_lock_interruptible(&list_lock)) | |
626 | return -ERESTARTSYS; | |
2400a1f8 GL |
627 | |
628 | if (!vdev || !video_is_registered(vdev)) { | |
629 | mutex_unlock(&list_lock); | |
630 | return -ENODEV; | |
631 | } | |
632 | ||
14381c26 | 633 | icd = video_get_drvdata(vdev); |
7dfff953 | 634 | ici = to_soc_camera_host(icd->parent); |
2400a1f8 GL |
635 | |
636 | ret = try_module_get(ici->ops->owner) ? 0 : -ENODEV; | |
7d051b35 | 637 | mutex_unlock(&list_lock); |
e55222ef | 638 | |
2400a1f8 | 639 | if (ret < 0) { |
7dfff953 | 640 | dev_err(icd->pdev, "Couldn't lock capture bus driver.\n"); |
2400a1f8 GL |
641 | return ret; |
642 | } | |
643 | ||
644 | if (!to_soc_camera_control(icd)) { | |
645 | /* No device driver attached */ | |
646 | ret = -ENODEV; | |
647 | goto econtrol; | |
e55222ef GL |
648 | } |
649 | ||
2400a1f8 GL |
650 | if (mutex_lock_interruptible(&ici->host_lock)) { |
651 | ret = -ERESTARTSYS; | |
652 | goto elockhost; | |
653 | } | |
1a0063a9 GL |
654 | icd->use_count++; |
655 | ||
9dc4e48f GL |
656 | /* Now we really have to activate the camera */ |
657 | if (icd->use_count == 1) { | |
2400a1f8 | 658 | struct soc_camera_desc *sdesc = to_soc_camera_desc(icd); |
025c18a1 | 659 | /* Restore parameters before the last close() per V4L2 API */ |
df2ed070 GL |
660 | struct v4l2_format f = { |
661 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
662 | .fmt.pix = { | |
6a6c8786 GL |
663 | .width = icd->user_width, |
664 | .height = icd->user_height, | |
025c18a1 | 665 | .field = icd->field, |
760697be GL |
666 | .colorspace = icd->colorspace, |
667 | .pixelformat = | |
668 | icd->current_fmt->host_fmt->fourcc, | |
df2ed070 GL |
669 | }, |
670 | }; | |
671 | ||
979ea1dd | 672 | /* The camera could have been already on, try to reset */ |
25a34811 GL |
673 | if (sdesc->subdev_desc.reset) |
674 | sdesc->subdev_desc.reset(icd->pdev); | |
979ea1dd | 675 | |
f7f6ce2d | 676 | ret = soc_camera_add_device(icd); |
9dc4e48f | 677 | if (ret < 0) { |
7dfff953 | 678 | dev_err(icd->pdev, "Couldn't activate the camera: %d\n", ret); |
9dc4e48f GL |
679 | goto eiciadd; |
680 | } | |
df2ed070 | 681 | |
4ec10bac | 682 | ret = __soc_camera_power_on(icd); |
7705b6d8 GL |
683 | if (ret < 0) |
684 | goto epower; | |
685 | ||
4f9fb5ed MCC |
686 | pm_runtime_enable(&icd->vdev->dev); |
687 | ret = pm_runtime_resume(&icd->vdev->dev); | |
688 | if (ret < 0 && ret != -ENOSYS) | |
689 | goto eresume; | |
690 | ||
760697be GL |
691 | /* |
692 | * Try to configure with default parameters. Notice: this is the | |
693 | * very first open, so, we cannot race against other calls, | |
694 | * apart from someone else calling open() simultaneously, but | |
dd669e90 | 695 | * .host_lock is protecting us against it. |
760697be | 696 | */ |
57bee29d | 697 | ret = soc_camera_set_fmt(icd, &f); |
df2ed070 GL |
698 | if (ret < 0) |
699 | goto esfmt; | |
24d8c029 | 700 | |
592c2aba GL |
701 | if (ici->ops->init_videobuf) { |
702 | ici->ops->init_videobuf(&icd->vb_vidq, icd); | |
703 | } else { | |
704 | ret = ici->ops->init_videobuf2(&icd->vb2_vidq, icd); | |
705 | if (ret < 0) | |
706 | goto einitvb; | |
707 | } | |
ee02da64 | 708 | v4l2_ctrl_handler_setup(&icd->ctrl_handler); |
9dc4e48f | 709 | } |
dd669e90 | 710 | mutex_unlock(&ici->host_lock); |
9dc4e48f | 711 | |
57bee29d | 712 | file->private_data = icd; |
7dfff953 | 713 | dev_dbg(icd->pdev, "camera device open\n"); |
e55222ef | 714 | |
e55222ef GL |
715 | return 0; |
716 | ||
df2ed070 | 717 | /* |
e09da11d GL |
718 | * All errors are entered with the .host_lock held, first four also |
719 | * with use_count == 1 | |
df2ed070 | 720 | */ |
592c2aba | 721 | einitvb: |
df2ed070 | 722 | esfmt: |
4f9fb5ed MCC |
723 | pm_runtime_disable(&icd->vdev->dev); |
724 | eresume: | |
4ec10bac | 725 | __soc_camera_power_off(icd); |
979ea1dd | 726 | epower: |
f7f6ce2d | 727 | soc_camera_remove_device(icd); |
7705b6d8 | 728 | eiciadd: |
c2786ad2 | 729 | icd->use_count--; |
dd669e90 | 730 | mutex_unlock(&ici->host_lock); |
2400a1f8 GL |
731 | elockhost: |
732 | econtrol: | |
733 | module_put(ici->ops->owner); | |
57bee29d | 734 | |
e55222ef GL |
735 | return ret; |
736 | } | |
737 | ||
bec43661 | 738 | static int soc_camera_close(struct file *file) |
e55222ef | 739 | { |
57bee29d | 740 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 741 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef | 742 | |
dd669e90 | 743 | mutex_lock(&ici->host_lock); |
9dc4e48f | 744 | icd->use_count--; |
40e2e092 | 745 | if (!icd->use_count) { |
4f9fb5ed MCC |
746 | pm_runtime_suspend(&icd->vdev->dev); |
747 | pm_runtime_disable(&icd->vdev->dev); | |
748 | ||
592c2aba GL |
749 | if (ici->ops->init_videobuf2) |
750 | vb2_queue_release(&icd->vb2_vidq); | |
4ec10bac | 751 | __soc_camera_power_off(icd); |
af44ad5e | 752 | |
f7f6ce2d | 753 | soc_camera_remove_device(icd); |
40e2e092 | 754 | } |
025c18a1 | 755 | |
57bee29d GL |
756 | if (icd->streamer == file) |
757 | icd->streamer = NULL; | |
dd669e90 | 758 | mutex_unlock(&ici->host_lock); |
57bee29d | 759 | |
b8d9904c | 760 | module_put(ici->ops->owner); |
9dc4e48f | 761 | |
7dfff953 | 762 | dev_dbg(icd->pdev, "camera device close\n"); |
e55222ef GL |
763 | |
764 | return 0; | |
765 | } | |
766 | ||
aba360d8 | 767 | static ssize_t soc_camera_read(struct file *file, char __user *buf, |
abe4c471 | 768 | size_t count, loff_t *ppos) |
e55222ef | 769 | { |
57bee29d | 770 | struct soc_camera_device *icd = file->private_data; |
1438be56 AG |
771 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
772 | ||
773 | dev_dbg(icd->pdev, "read called, buf %p\n", buf); | |
774 | ||
775 | if (ici->ops->init_videobuf2 && icd->vb2_vidq.io_modes & VB2_READ) | |
776 | return vb2_read(&icd->vb2_vidq, buf, count, ppos, | |
777 | file->f_flags & O_NONBLOCK); | |
e55222ef | 778 | |
7dfff953 | 779 | dev_err(icd->pdev, "camera device read not implemented\n"); |
e55222ef | 780 | |
1438be56 | 781 | return -EINVAL; |
e55222ef GL |
782 | } |
783 | ||
784 | static int soc_camera_mmap(struct file *file, struct vm_area_struct *vma) | |
785 | { | |
57bee29d | 786 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 787 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
788 | int err; |
789 | ||
7dfff953 | 790 | dev_dbg(icd->pdev, "mmap called, vma=0x%08lx\n", (unsigned long)vma); |
e55222ef | 791 | |
57bee29d GL |
792 | if (icd->streamer != file) |
793 | return -EBUSY; | |
794 | ||
dd669e90 | 795 | if (mutex_lock_interruptible(&ici->host_lock)) |
8422b087 | 796 | return -ERESTARTSYS; |
592c2aba GL |
797 | if (ici->ops->init_videobuf) |
798 | err = videobuf_mmap_mapper(&icd->vb_vidq, vma); | |
799 | else | |
800 | err = vb2_mmap(&icd->vb2_vidq, vma); | |
dd669e90 | 801 | mutex_unlock(&ici->host_lock); |
e55222ef | 802 | |
7dfff953 | 803 | dev_dbg(icd->pdev, "vma start=0x%08lx, size=%ld, ret=%d\n", |
e55222ef GL |
804 | (unsigned long)vma->vm_start, |
805 | (unsigned long)vma->vm_end - (unsigned long)vma->vm_start, | |
806 | err); | |
807 | ||
808 | return err; | |
809 | } | |
810 | ||
811 | static unsigned int soc_camera_poll(struct file *file, poll_table *pt) | |
812 | { | |
57bee29d | 813 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 814 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
8422b087 | 815 | unsigned res = POLLERR; |
e55222ef | 816 | |
57bee29d | 817 | if (icd->streamer != file) |
e55222ef | 818 | return POLLERR; |
e55222ef | 819 | |
dd669e90 | 820 | mutex_lock(&ici->host_lock); |
8422b087 HV |
821 | if (ici->ops->init_videobuf && list_empty(&icd->vb_vidq.stream)) |
822 | dev_err(icd->pdev, "Trying to poll with no queued buffers!\n"); | |
823 | else | |
824 | res = ici->ops->poll(file, pt); | |
dd669e90 | 825 | mutex_unlock(&ici->host_lock); |
8422b087 | 826 | return res; |
e55222ef GL |
827 | } |
828 | ||
592c2aba GL |
829 | void soc_camera_lock(struct vb2_queue *vq) |
830 | { | |
831 | struct soc_camera_device *icd = vb2_get_drv_priv(vq); | |
dd669e90 GL |
832 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
833 | mutex_lock(&ici->host_lock); | |
592c2aba GL |
834 | } |
835 | EXPORT_SYMBOL(soc_camera_lock); | |
836 | ||
837 | void soc_camera_unlock(struct vb2_queue *vq) | |
838 | { | |
839 | struct soc_camera_device *icd = vb2_get_drv_priv(vq); | |
dd669e90 GL |
840 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
841 | mutex_unlock(&ici->host_lock); | |
592c2aba GL |
842 | } |
843 | EXPORT_SYMBOL(soc_camera_unlock); | |
844 | ||
bec43661 | 845 | static struct v4l2_file_operations soc_camera_fops = { |
e55222ef GL |
846 | .owner = THIS_MODULE, |
847 | .open = soc_camera_open, | |
848 | .release = soc_camera_close, | |
b6a633c1 | 849 | .unlocked_ioctl = video_ioctl2, |
e55222ef GL |
850 | .read = soc_camera_read, |
851 | .mmap = soc_camera_mmap, | |
852 | .poll = soc_camera_poll, | |
e55222ef GL |
853 | }; |
854 | ||
72937890 | 855 | static int soc_camera_s_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 856 | struct v4l2_format *f) |
e55222ef | 857 | { |
57bee29d | 858 | struct soc_camera_device *icd = file->private_data; |
e55222ef | 859 | int ret; |
e55222ef GL |
860 | |
861 | WARN_ON(priv != file->private_data); | |
862 | ||
d366d4a0 | 863 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
7dfff953 | 864 | dev_warn(icd->pdev, "Wrong buf-type %d\n", f->type); |
d366d4a0 GL |
865 | return -EINVAL; |
866 | } | |
867 | ||
57bee29d GL |
868 | if (icd->streamer && icd->streamer != file) |
869 | return -EBUSY; | |
1c3bb743 | 870 | |
7dfff953 GL |
871 | if (is_streaming(to_soc_camera_host(icd->parent), icd)) { |
872 | dev_err(icd->pdev, "S_FMT denied: queue initialised\n"); | |
b6a633c1 | 873 | return -EBUSY; |
1c3bb743 GL |
874 | } |
875 | ||
57bee29d GL |
876 | ret = soc_camera_set_fmt(icd, f); |
877 | ||
878 | if (!ret && !icd->streamer) | |
879 | icd->streamer = file; | |
1c3bb743 | 880 | |
1c3bb743 | 881 | return ret; |
e55222ef GL |
882 | } |
883 | ||
72937890 | 884 | static int soc_camera_enum_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 885 | struct v4l2_fmtdesc *f) |
e55222ef | 886 | { |
57bee29d | 887 | struct soc_camera_device *icd = file->private_data; |
760697be | 888 | const struct soc_mbus_pixelfmt *format; |
e55222ef GL |
889 | |
890 | WARN_ON(priv != file->private_data); | |
891 | ||
c2786ad2 | 892 | if (f->index >= icd->num_user_formats) |
e55222ef GL |
893 | return -EINVAL; |
894 | ||
c2786ad2 | 895 | format = icd->user_formats[f->index].host_fmt; |
e55222ef | 896 | |
760697be GL |
897 | if (format->name) |
898 | strlcpy(f->description, format->name, sizeof(f->description)); | |
e55222ef GL |
899 | f->pixelformat = format->fourcc; |
900 | return 0; | |
901 | } | |
902 | ||
72937890 | 903 | static int soc_camera_g_fmt_vid_cap(struct file *file, void *priv, |
abe4c471 | 904 | struct v4l2_format *f) |
e55222ef | 905 | { |
57bee29d | 906 | struct soc_camera_device *icd = file->private_data; |
64f5905e | 907 | struct v4l2_pix_format *pix = &f->fmt.pix; |
e55222ef GL |
908 | |
909 | WARN_ON(priv != file->private_data); | |
910 | ||
d366d4a0 GL |
911 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
912 | return -EINVAL; | |
913 | ||
6a6c8786 GL |
914 | pix->width = icd->user_width; |
915 | pix->height = icd->user_height; | |
0e4c180d SA |
916 | pix->bytesperline = icd->bytesperline; |
917 | pix->sizeimage = icd->sizeimage; | |
592c2aba | 918 | pix->field = icd->field; |
760697be | 919 | pix->pixelformat = icd->current_fmt->host_fmt->fourcc; |
760697be | 920 | pix->colorspace = icd->colorspace; |
7dfff953 | 921 | dev_dbg(icd->pdev, "current_fmt->fourcc: 0x%08x\n", |
760697be | 922 | icd->current_fmt->host_fmt->fourcc); |
e55222ef GL |
923 | return 0; |
924 | } | |
925 | ||
926 | static int soc_camera_querycap(struct file *file, void *priv, | |
927 | struct v4l2_capability *cap) | |
928 | { | |
57bee29d | 929 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 930 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
931 | |
932 | WARN_ON(priv != file->private_data); | |
933 | ||
934 | strlcpy(cap->driver, ici->drv_name, sizeof(cap->driver)); | |
b8d9904c | 935 | return ici->ops->querycap(ici, cap); |
e55222ef GL |
936 | } |
937 | ||
938 | static int soc_camera_streamon(struct file *file, void *priv, | |
939 | enum v4l2_buf_type i) | |
940 | { | |
57bee29d | 941 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 942 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
c9c1f1c0 | 943 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
1c3bb743 | 944 | int ret; |
e55222ef GL |
945 | |
946 | WARN_ON(priv != file->private_data); | |
947 | ||
e55222ef GL |
948 | if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
949 | return -EINVAL; | |
950 | ||
57bee29d GL |
951 | if (icd->streamer != file) |
952 | return -EBUSY; | |
953 | ||
e55222ef | 954 | /* This calls buf_queue from host driver's videobuf_queue_ops */ |
592c2aba GL |
955 | if (ici->ops->init_videobuf) |
956 | ret = videobuf_streamon(&icd->vb_vidq); | |
957 | else | |
958 | ret = vb2_streamon(&icd->vb2_vidq, i); | |
959 | ||
7fdbd85b AG |
960 | if (!ret) |
961 | v4l2_subdev_call(sd, video, s_stream, 1); | |
1c3bb743 | 962 | |
1c3bb743 | 963 | return ret; |
e55222ef GL |
964 | } |
965 | ||
966 | static int soc_camera_streamoff(struct file *file, void *priv, | |
967 | enum v4l2_buf_type i) | |
968 | { | |
57bee29d | 969 | struct soc_camera_device *icd = file->private_data; |
c9c1f1c0 | 970 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
7dfff953 | 971 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef GL |
972 | |
973 | WARN_ON(priv != file->private_data); | |
974 | ||
e55222ef GL |
975 | if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
976 | return -EINVAL; | |
977 | ||
57bee29d GL |
978 | if (icd->streamer != file) |
979 | return -EBUSY; | |
980 | ||
5d28d525 GL |
981 | /* |
982 | * This calls buf_release from host driver's videobuf_queue_ops for all | |
983 | * remaining buffers. When the last buffer is freed, stop capture | |
984 | */ | |
592c2aba GL |
985 | if (ici->ops->init_videobuf) |
986 | videobuf_streamoff(&icd->vb_vidq); | |
987 | else | |
988 | vb2_streamoff(&icd->vb2_vidq, i); | |
e55222ef | 989 | |
c9c1f1c0 | 990 | v4l2_subdev_call(sd, video, s_stream, 0); |
e55222ef GL |
991 | |
992 | return 0; | |
993 | } | |
994 | ||
e55222ef GL |
995 | static int soc_camera_cropcap(struct file *file, void *fh, |
996 | struct v4l2_cropcap *a) | |
997 | { | |
57bee29d | 998 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 999 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
e55222ef | 1000 | |
6a6c8786 | 1001 | return ici->ops->cropcap(icd, a); |
e55222ef GL |
1002 | } |
1003 | ||
1004 | static int soc_camera_g_crop(struct file *file, void *fh, | |
1005 | struct v4l2_crop *a) | |
1006 | { | |
57bee29d | 1007 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 1008 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
6a6c8786 | 1009 | int ret; |
e55222ef | 1010 | |
6a6c8786 | 1011 | ret = ici->ops->get_crop(icd, a); |
e55222ef | 1012 | |
6a6c8786 | 1013 | return ret; |
e55222ef GL |
1014 | } |
1015 | ||
68a54f0e GL |
1016 | /* |
1017 | * According to the V4L2 API, drivers shall not update the struct v4l2_crop | |
1018 | * argument with the actual geometry, instead, the user shall use G_CROP to | |
ab56d5eb | 1019 | * retrieve it. |
68a54f0e | 1020 | */ |
e55222ef | 1021 | static int soc_camera_s_crop(struct file *file, void *fh, |
4f996594 | 1022 | const struct v4l2_crop *a) |
e55222ef | 1023 | { |
57bee29d | 1024 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 1025 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
4f996594 | 1026 | const struct v4l2_rect *rect = &a->c; |
6a6c8786 | 1027 | struct v4l2_crop current_crop; |
e55222ef GL |
1028 | int ret; |
1029 | ||
1030 | if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1031 | return -EINVAL; | |
1032 | ||
7dfff953 | 1033 | dev_dbg(icd->pdev, "S_CROP(%ux%u@%u:%u)\n", |
6a6c8786 GL |
1034 | rect->width, rect->height, rect->left, rect->top); |
1035 | ||
605a4103 AG |
1036 | current_crop.type = a->type; |
1037 | ||
6a6c8786 GL |
1038 | /* If get_crop fails, we'll let host and / or client drivers decide */ |
1039 | ret = ici->ops->get_crop(icd, ¤t_crop); | |
1040 | ||
b897a91a | 1041 | /* Prohibit window size change with initialised buffers */ |
103754a0 | 1042 | if (ret < 0) { |
7dfff953 | 1043 | dev_err(icd->pdev, |
103754a0 | 1044 | "S_CROP denied: getting current crop failed\n"); |
aee5c2f1 GL |
1045 | } else if ((a->c.width == current_crop.c.width && |
1046 | a->c.height == current_crop.c.height) || | |
1047 | !is_streaming(ici, icd)) { | |
1048 | /* same size or not streaming - use .set_crop() */ | |
1049 | ret = ici->ops->set_crop(icd, a); | |
1050 | } else if (ici->ops->set_livecrop) { | |
1051 | ret = ici->ops->set_livecrop(icd, a); | |
1052 | } else { | |
7dfff953 | 1053 | dev_err(icd->pdev, |
b897a91a GL |
1054 | "S_CROP denied: queue initialised and sizes differ\n"); |
1055 | ret = -EBUSY; | |
b897a91a GL |
1056 | } |
1057 | ||
e55222ef GL |
1058 | return ret; |
1059 | } | |
1060 | ||
3bfb4100 GL |
1061 | static int soc_camera_g_selection(struct file *file, void *fh, |
1062 | struct v4l2_selection *s) | |
1063 | { | |
1064 | struct soc_camera_device *icd = file->private_data; | |
1065 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
1066 | ||
1067 | /* With a wrong type no need to try to fall back to cropping */ | |
1068 | if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1069 | return -EINVAL; | |
1070 | ||
1071 | if (!ici->ops->get_selection) | |
1072 | return -ENOTTY; | |
1073 | ||
1074 | return ici->ops->get_selection(icd, s); | |
1075 | } | |
1076 | ||
1077 | static int soc_camera_s_selection(struct file *file, void *fh, | |
1078 | struct v4l2_selection *s) | |
1079 | { | |
1080 | struct soc_camera_device *icd = file->private_data; | |
1081 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
1082 | int ret; | |
1083 | ||
1084 | /* In all these cases cropping emulation will not help */ | |
1085 | if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || | |
eb3c311c SN |
1086 | (s->target != V4L2_SEL_TGT_COMPOSE && |
1087 | s->target != V4L2_SEL_TGT_CROP)) | |
3bfb4100 GL |
1088 | return -EINVAL; |
1089 | ||
eb3c311c | 1090 | if (s->target == V4L2_SEL_TGT_COMPOSE) { |
3bfb4100 GL |
1091 | /* No output size change during a running capture! */ |
1092 | if (is_streaming(ici, icd) && | |
1093 | (icd->user_width != s->r.width || | |
1094 | icd->user_height != s->r.height)) | |
1095 | return -EBUSY; | |
1096 | ||
1097 | /* | |
1098 | * Only one user is allowed to change the output format, touch | |
1099 | * buffers, start / stop streaming, poll for data | |
1100 | */ | |
1101 | if (icd->streamer && icd->streamer != file) | |
1102 | return -EBUSY; | |
1103 | } | |
1104 | ||
1105 | if (!ici->ops->set_selection) | |
1106 | return -ENOTTY; | |
1107 | ||
1108 | ret = ici->ops->set_selection(icd, s); | |
1109 | if (!ret && | |
eb3c311c | 1110 | s->target == V4L2_SEL_TGT_COMPOSE) { |
3bfb4100 GL |
1111 | icd->user_width = s->r.width; |
1112 | icd->user_height = s->r.height; | |
1113 | if (!icd->streamer) | |
1114 | icd->streamer = file; | |
1115 | } | |
1116 | ||
1117 | return ret; | |
1118 | } | |
1119 | ||
c9f6ef69 GL |
1120 | static int soc_camera_g_parm(struct file *file, void *fh, |
1121 | struct v4l2_streamparm *a) | |
1122 | { | |
57bee29d | 1123 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 1124 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
c9f6ef69 GL |
1125 | |
1126 | if (ici->ops->get_parm) | |
1127 | return ici->ops->get_parm(icd, a); | |
1128 | ||
1129 | return -ENOIOCTLCMD; | |
1130 | } | |
1131 | ||
1132 | static int soc_camera_s_parm(struct file *file, void *fh, | |
1133 | struct v4l2_streamparm *a) | |
1134 | { | |
57bee29d | 1135 | struct soc_camera_device *icd = file->private_data; |
7dfff953 | 1136 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
c9f6ef69 GL |
1137 | |
1138 | if (ici->ops->set_parm) | |
1139 | return ici->ops->set_parm(icd, a); | |
1140 | ||
1141 | return -ENOIOCTLCMD; | |
1142 | } | |
1143 | ||
e09da11d GL |
1144 | static int soc_camera_probe(struct soc_camera_host *ici, |
1145 | struct soc_camera_device *icd); | |
7dfff953 | 1146 | |
e55222ef GL |
1147 | /* So far this function cannot fail */ |
1148 | static void scan_add_host(struct soc_camera_host *ici) | |
1149 | { | |
1150 | struct soc_camera_device *icd; | |
1151 | ||
7d051b35 | 1152 | mutex_lock(&list_lock); |
e55222ef | 1153 | |
e09da11d | 1154 | list_for_each_entry(icd, &devices, list) |
e55222ef | 1155 | if (icd->iface == ici->nr) { |
e09da11d GL |
1156 | struct soc_camera_desc *sdesc = to_soc_camera_desc(icd); |
1157 | struct soc_camera_subdev_desc *ssdd = &sdesc->subdev_desc; | |
1158 | ||
1159 | /* The camera could have been already on, try to reset */ | |
1160 | if (ssdd->reset) | |
1161 | ssdd->reset(icd->pdev); | |
1162 | ||
7dfff953 | 1163 | icd->parent = ici->v4l2_dev.dev; |
e09da11d GL |
1164 | |
1165 | /* Ignore errors */ | |
1166 | soc_camera_probe(ici, icd); | |
e55222ef | 1167 | } |
e55222ef | 1168 | |
7d051b35 | 1169 | mutex_unlock(&list_lock); |
e55222ef GL |
1170 | } |
1171 | ||
9aea470b GL |
1172 | /* |
1173 | * It is invalid to call v4l2_clk_enable() after a successful probing | |
1174 | * asynchronously outside of V4L2 operations, i.e. with .host_lock not held. | |
1175 | */ | |
1176 | static int soc_camera_clk_enable(struct v4l2_clk *clk) | |
1177 | { | |
1178 | struct soc_camera_device *icd = clk->priv; | |
1179 | struct soc_camera_host *ici; | |
e09da11d | 1180 | int ret; |
9aea470b GL |
1181 | |
1182 | if (!icd || !icd->parent) | |
1183 | return -ENODEV; | |
1184 | ||
1185 | ici = to_soc_camera_host(icd->parent); | |
1186 | ||
1187 | if (!try_module_get(ici->ops->owner)) | |
1188 | return -ENODEV; | |
1189 | ||
1190 | /* | |
1191 | * If a different client is currently being probed, the host will tell | |
1192 | * you to go | |
1193 | */ | |
e09da11d GL |
1194 | mutex_lock(&ici->clk_lock); |
1195 | ret = ici->ops->clock_start(ici); | |
1196 | mutex_unlock(&ici->clk_lock); | |
1197 | return ret; | |
9aea470b GL |
1198 | } |
1199 | ||
1200 | static void soc_camera_clk_disable(struct v4l2_clk *clk) | |
1201 | { | |
1202 | struct soc_camera_device *icd = clk->priv; | |
1203 | struct soc_camera_host *ici; | |
1204 | ||
1205 | if (!icd || !icd->parent) | |
1206 | return; | |
1207 | ||
1208 | ici = to_soc_camera_host(icd->parent); | |
1209 | ||
e09da11d | 1210 | mutex_lock(&ici->clk_lock); |
9aea470b | 1211 | ici->ops->clock_stop(ici); |
e09da11d | 1212 | mutex_unlock(&ici->clk_lock); |
9aea470b GL |
1213 | |
1214 | module_put(ici->ops->owner); | |
1215 | } | |
1216 | ||
1217 | /* | |
1218 | * Eventually, it would be more logical to make the respective host the clock | |
1219 | * owner, but then we would have to copy this struct for each ici. Besides, it | |
1220 | * would introduce the circular dependency problem, unless we port all client | |
1221 | * drivers to release the clock, when not in use. | |
1222 | */ | |
1223 | static const struct v4l2_clk_ops soc_camera_clk_ops = { | |
1224 | .owner = THIS_MODULE, | |
1225 | .enable = soc_camera_clk_enable, | |
1226 | .disable = soc_camera_clk_disable, | |
1227 | }; | |
1228 | ||
e09da11d GL |
1229 | static int soc_camera_dyn_pdev(struct soc_camera_desc *sdesc, |
1230 | struct soc_camera_async_client *sasc) | |
1231 | { | |
1232 | struct platform_device *pdev; | |
1233 | int ret, i; | |
1234 | ||
1235 | mutex_lock(&list_lock); | |
1236 | i = find_first_zero_bit(device_map, MAP_MAX_NUM); | |
1237 | if (i < MAP_MAX_NUM) | |
1238 | set_bit(i, device_map); | |
1239 | mutex_unlock(&list_lock); | |
1240 | if (i >= MAP_MAX_NUM) | |
1241 | return -ENOMEM; | |
1242 | ||
1243 | pdev = platform_device_alloc("soc-camera-pdrv", i); | |
1244 | if (!pdev) | |
1245 | return -ENOMEM; | |
1246 | ||
1247 | ret = platform_device_add_data(pdev, sdesc, sizeof(*sdesc)); | |
1248 | if (ret < 0) { | |
1249 | platform_device_put(pdev); | |
1250 | return ret; | |
1251 | } | |
1252 | ||
1253 | sasc->pdev = pdev; | |
1254 | ||
1255 | return 0; | |
1256 | } | |
1257 | ||
1258 | static struct soc_camera_device *soc_camera_add_pdev(struct soc_camera_async_client *sasc) | |
1259 | { | |
1260 | struct platform_device *pdev = sasc->pdev; | |
1261 | int ret; | |
1262 | ||
1263 | ret = platform_device_add(pdev); | |
1264 | if (ret < 0 || !pdev->dev.driver) | |
1265 | return NULL; | |
1266 | ||
1267 | return platform_get_drvdata(pdev); | |
1268 | } | |
1269 | ||
1270 | /* Locking: called with .host_lock held */ | |
1271 | static int soc_camera_probe_finish(struct soc_camera_device *icd) | |
1272 | { | |
1273 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1274 | struct v4l2_mbus_framefmt mf; | |
1275 | int ret; | |
1276 | ||
1277 | sd->grp_id = soc_camera_grp_id(icd); | |
1278 | v4l2_set_subdev_hostdata(sd, icd); | |
1279 | ||
f6cc51a9 HV |
1280 | v4l2_subdev_call(sd, video, g_tvnorms, &icd->vdev->tvnorms); |
1281 | ||
e09da11d GL |
1282 | ret = v4l2_ctrl_add_handler(&icd->ctrl_handler, sd->ctrl_handler, NULL); |
1283 | if (ret < 0) | |
1284 | return ret; | |
1285 | ||
1286 | ret = soc_camera_add_device(icd); | |
1287 | if (ret < 0) { | |
1288 | dev_err(icd->pdev, "Couldn't activate the camera: %d\n", ret); | |
1289 | return ret; | |
1290 | } | |
1291 | ||
1292 | /* At this point client .probe() should have run already */ | |
1293 | ret = soc_camera_init_user_formats(icd); | |
1294 | if (ret < 0) | |
1295 | goto eusrfmt; | |
1296 | ||
1297 | icd->field = V4L2_FIELD_ANY; | |
1298 | ||
1299 | ret = soc_camera_video_start(icd); | |
1300 | if (ret < 0) | |
1301 | goto evidstart; | |
1302 | ||
1303 | /* Try to improve our guess of a reasonable window format */ | |
1304 | if (!v4l2_subdev_call(sd, video, g_mbus_fmt, &mf)) { | |
1305 | icd->user_width = mf.width; | |
1306 | icd->user_height = mf.height; | |
1307 | icd->colorspace = mf.colorspace; | |
1308 | icd->field = mf.field; | |
1309 | } | |
1310 | soc_camera_remove_device(icd); | |
1311 | ||
1312 | return 0; | |
1313 | ||
1314 | evidstart: | |
1315 | soc_camera_free_user_formats(icd); | |
1316 | eusrfmt: | |
1317 | soc_camera_remove_device(icd); | |
1318 | ||
1319 | return ret; | |
1320 | } | |
1321 | ||
40e2e092 | 1322 | #ifdef CONFIG_I2C_BOARDINFO |
e09da11d | 1323 | static int soc_camera_i2c_init(struct soc_camera_device *icd, |
25a34811 | 1324 | struct soc_camera_desc *sdesc) |
e55222ef | 1325 | { |
23272427 | 1326 | struct soc_camera_subdev_desc *ssdd; |
40e2e092 | 1327 | struct i2c_client *client; |
e09da11d | 1328 | struct soc_camera_host *ici; |
25a34811 | 1329 | struct soc_camera_host_desc *shd = &sdesc->host_desc; |
e09da11d | 1330 | struct i2c_adapter *adap; |
979ea1dd | 1331 | struct v4l2_subdev *subdev; |
9aea470b GL |
1332 | char clk_name[V4L2_SUBDEV_NAME_SIZE]; |
1333 | int ret; | |
e55222ef | 1334 | |
e09da11d GL |
1335 | /* First find out how we link the main client */ |
1336 | if (icd->sasc) { | |
1337 | /* Async non-OF probing handled by the subdevice list */ | |
1338 | return -EPROBE_DEFER; | |
1339 | } | |
1340 | ||
1341 | ici = to_soc_camera_host(icd->parent); | |
1342 | adap = i2c_get_adapter(shd->i2c_adapter_id); | |
40e2e092 | 1343 | if (!adap) { |
7dfff953 | 1344 | dev_err(icd->pdev, "Cannot get I2C adapter #%d. No driver?\n", |
25a34811 | 1345 | shd->i2c_adapter_id); |
9aea470b | 1346 | return -ENODEV; |
40e2e092 | 1347 | } |
e55222ef | 1348 | |
23272427 GL |
1349 | ssdd = kzalloc(sizeof(*ssdd), GFP_KERNEL); |
1350 | if (!ssdd) { | |
1351 | ret = -ENOMEM; | |
1352 | goto ealloc; | |
1353 | } | |
1354 | ||
1355 | memcpy(ssdd, &sdesc->subdev_desc, sizeof(*ssdd)); | |
1356 | /* | |
1357 | * In synchronous case we request regulators ourselves in | |
1358 | * soc_camera_pdrv_probe(), make sure the subdevice driver doesn't try | |
1359 | * to allocate them again. | |
1360 | */ | |
d3f884a7 GL |
1361 | ssdd->sd_pdata.num_regulators = 0; |
1362 | ssdd->sd_pdata.regulators = NULL; | |
23272427 | 1363 | shd->board_info->platform_data = ssdd; |
e55222ef | 1364 | |
9aea470b GL |
1365 | snprintf(clk_name, sizeof(clk_name), "%d-%04x", |
1366 | shd->i2c_adapter_id, shd->board_info->addr); | |
1367 | ||
1368 | icd->clk = v4l2_clk_register(&soc_camera_clk_ops, clk_name, "mclk", icd); | |
1369 | if (IS_ERR(icd->clk)) { | |
1370 | ret = PTR_ERR(icd->clk); | |
1371 | goto eclkreg; | |
1372 | } | |
1373 | ||
979ea1dd | 1374 | subdev = v4l2_i2c_new_subdev_board(&ici->v4l2_dev, adap, |
25a34811 | 1375 | shd->board_info, NULL); |
9aea470b GL |
1376 | if (!subdev) { |
1377 | ret = -ENODEV; | |
40e2e092 | 1378 | goto ei2cnd; |
9aea470b | 1379 | } |
e55222ef | 1380 | |
c4ce6d14 | 1381 | client = v4l2_get_subdevdata(subdev); |
979ea1dd | 1382 | |
40e2e092 | 1383 | /* Use to_i2c_client(dev) to recover the i2c client */ |
7dfff953 | 1384 | icd->control = &client->dev; |
e55222ef | 1385 | |
40e2e092 GL |
1386 | return 0; |
1387 | ei2cnd: | |
9aea470b | 1388 | v4l2_clk_unregister(icd->clk); |
e09da11d | 1389 | icd->clk = NULL; |
23272427 GL |
1390 | eclkreg: |
1391 | kfree(ssdd); | |
1392 | ealloc: | |
40e2e092 | 1393 | i2c_put_adapter(adap); |
9aea470b | 1394 | return ret; |
e55222ef GL |
1395 | } |
1396 | ||
e09da11d | 1397 | static void soc_camera_i2c_free(struct soc_camera_device *icd) |
40e2e092 GL |
1398 | { |
1399 | struct i2c_client *client = | |
1400 | to_i2c_client(to_soc_camera_control(icd)); | |
e09da11d | 1401 | struct i2c_adapter *adap; |
23272427 | 1402 | struct soc_camera_subdev_desc *ssdd; |
7dfff953 GL |
1403 | |
1404 | icd->control = NULL; | |
e09da11d GL |
1405 | if (icd->sasc) |
1406 | return; | |
1407 | ||
1408 | adap = client->adapter; | |
23272427 | 1409 | ssdd = client->dev.platform_data; |
979ea1dd | 1410 | v4l2_device_unregister_subdev(i2c_get_clientdata(client)); |
40e2e092 | 1411 | i2c_unregister_device(client); |
c8dd7078 | 1412 | i2c_put_adapter(adap); |
23272427 | 1413 | kfree(ssdd); |
9aea470b GL |
1414 | v4l2_clk_unregister(icd->clk); |
1415 | icd->clk = NULL; | |
40e2e092 | 1416 | } |
e09da11d GL |
1417 | |
1418 | /* | |
1419 | * V4L2 asynchronous notifier callbacks. They are all called under a v4l2-async | |
1420 | * internal global mutex, therefore cannot race against other asynchronous | |
1421 | * events. Until notifier->complete() (soc_camera_async_complete()) is called, | |
1422 | * the video device node is not registered and no V4L fops can occur. Unloading | |
1423 | * of the host driver also calls a v4l2-async function, so also there we're | |
1424 | * protected. | |
1425 | */ | |
1426 | static int soc_camera_async_bound(struct v4l2_async_notifier *notifier, | |
1427 | struct v4l2_subdev *sd, | |
1428 | struct v4l2_async_subdev *asd) | |
1429 | { | |
1430 | struct soc_camera_async_client *sasc = container_of(notifier, | |
1431 | struct soc_camera_async_client, notifier); | |
1432 | struct soc_camera_device *icd = platform_get_drvdata(sasc->pdev); | |
1433 | ||
1434 | if (asd == sasc->sensor && !WARN_ON(icd->control)) { | |
1435 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
1436 | ||
1437 | /* | |
1438 | * Only now we get subdevice-specific information like | |
1439 | * regulators, flags, callbacks, etc. | |
1440 | */ | |
1441 | if (client) { | |
1442 | struct soc_camera_desc *sdesc = to_soc_camera_desc(icd); | |
1443 | struct soc_camera_subdev_desc *ssdd = | |
1444 | soc_camera_i2c_to_desc(client); | |
1445 | if (ssdd) { | |
1446 | memcpy(&sdesc->subdev_desc, ssdd, | |
1447 | sizeof(sdesc->subdev_desc)); | |
1448 | if (ssdd->reset) | |
1449 | ssdd->reset(icd->pdev); | |
1450 | } | |
1451 | ||
1452 | icd->control = &client->dev; | |
1453 | } | |
1454 | } | |
1455 | ||
1456 | return 0; | |
1457 | } | |
1458 | ||
1459 | static void soc_camera_async_unbind(struct v4l2_async_notifier *notifier, | |
1460 | struct v4l2_subdev *sd, | |
1461 | struct v4l2_async_subdev *asd) | |
1462 | { | |
1463 | struct soc_camera_async_client *sasc = container_of(notifier, | |
1464 | struct soc_camera_async_client, notifier); | |
1465 | struct soc_camera_device *icd = platform_get_drvdata(sasc->pdev); | |
1466 | ||
1467 | if (icd->clk) { | |
1468 | v4l2_clk_unregister(icd->clk); | |
1469 | icd->clk = NULL; | |
1470 | } | |
1471 | } | |
1472 | ||
1473 | static int soc_camera_async_complete(struct v4l2_async_notifier *notifier) | |
1474 | { | |
1475 | struct soc_camera_async_client *sasc = container_of(notifier, | |
1476 | struct soc_camera_async_client, notifier); | |
1477 | struct soc_camera_device *icd = platform_get_drvdata(sasc->pdev); | |
1478 | ||
1479 | if (to_soc_camera_control(icd)) { | |
1480 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
1481 | int ret; | |
1482 | ||
1483 | mutex_lock(&list_lock); | |
1484 | ret = soc_camera_probe(ici, icd); | |
1485 | mutex_unlock(&list_lock); | |
1486 | if (ret < 0) | |
1487 | return ret; | |
1488 | } | |
1489 | ||
1490 | return 0; | |
1491 | } | |
1492 | ||
1493 | static int scan_async_group(struct soc_camera_host *ici, | |
f687f326 | 1494 | struct v4l2_async_subdev **asd, unsigned int size) |
e09da11d GL |
1495 | { |
1496 | struct soc_camera_async_subdev *sasd; | |
1497 | struct soc_camera_async_client *sasc; | |
1498 | struct soc_camera_device *icd; | |
1499 | struct soc_camera_desc sdesc = {.host_desc.bus_id = ici->nr,}; | |
1500 | char clk_name[V4L2_SUBDEV_NAME_SIZE]; | |
85e86c6e HV |
1501 | unsigned int i; |
1502 | int ret; | |
e09da11d GL |
1503 | |
1504 | /* First look for a sensor */ | |
1505 | for (i = 0; i < size; i++) { | |
1506 | sasd = container_of(asd[i], struct soc_camera_async_subdev, asd); | |
1507 | if (sasd->role == SOCAM_SUBDEV_DATA_SOURCE) | |
1508 | break; | |
1509 | } | |
1510 | ||
85e86c6e | 1511 | if (i >= size || asd[i]->match_type != V4L2_ASYNC_MATCH_I2C) { |
e09da11d GL |
1512 | /* All useless */ |
1513 | dev_err(ici->v4l2_dev.dev, "No I2C data source found!\n"); | |
1514 | return -ENODEV; | |
1515 | } | |
1516 | ||
1517 | /* Or shall this be managed by the soc-camera device? */ | |
1518 | sasc = devm_kzalloc(ici->v4l2_dev.dev, sizeof(*sasc), GFP_KERNEL); | |
1519 | if (!sasc) | |
1520 | return -ENOMEM; | |
1521 | ||
1522 | /* HACK: just need a != NULL */ | |
1523 | sdesc.host_desc.board_info = ERR_PTR(-ENODATA); | |
1524 | ||
1525 | ret = soc_camera_dyn_pdev(&sdesc, sasc); | |
1526 | if (ret < 0) | |
057c2a2e | 1527 | goto eallocpdev; |
e09da11d GL |
1528 | |
1529 | sasc->sensor = &sasd->asd; | |
1530 | ||
1531 | icd = soc_camera_add_pdev(sasc); | |
1532 | if (!icd) { | |
057c2a2e GL |
1533 | ret = -ENOMEM; |
1534 | goto eaddpdev; | |
e09da11d GL |
1535 | } |
1536 | ||
e8419d08 | 1537 | sasc->notifier.subdevs = asd; |
e09da11d GL |
1538 | sasc->notifier.num_subdevs = size; |
1539 | sasc->notifier.bound = soc_camera_async_bound; | |
1540 | sasc->notifier.unbind = soc_camera_async_unbind; | |
1541 | sasc->notifier.complete = soc_camera_async_complete; | |
1542 | ||
1543 | icd->sasc = sasc; | |
1544 | icd->parent = ici->v4l2_dev.dev; | |
1545 | ||
1546 | snprintf(clk_name, sizeof(clk_name), "%d-%04x", | |
1547 | sasd->asd.match.i2c.adapter_id, sasd->asd.match.i2c.address); | |
1548 | ||
1549 | icd->clk = v4l2_clk_register(&soc_camera_clk_ops, clk_name, "mclk", icd); | |
1550 | if (IS_ERR(icd->clk)) { | |
1551 | ret = PTR_ERR(icd->clk); | |
1552 | goto eclkreg; | |
1553 | } | |
1554 | ||
1555 | ret = v4l2_async_notifier_register(&ici->v4l2_dev, &sasc->notifier); | |
1556 | if (!ret) | |
1557 | return 0; | |
1558 | ||
1559 | v4l2_clk_unregister(icd->clk); | |
1560 | eclkreg: | |
1561 | icd->clk = NULL; | |
057c2a2e GL |
1562 | platform_device_del(sasc->pdev); |
1563 | eaddpdev: | |
1564 | platform_device_put(sasc->pdev); | |
1565 | eallocpdev: | |
1566 | devm_kfree(ici->v4l2_dev.dev, sasc); | |
e09da11d GL |
1567 | dev_err(ici->v4l2_dev.dev, "group probe failed: %d\n", ret); |
1568 | ||
1569 | return ret; | |
1570 | } | |
1571 | ||
1572 | static void scan_async_host(struct soc_camera_host *ici) | |
1573 | { | |
1574 | struct v4l2_async_subdev **asd; | |
1575 | int j; | |
1576 | ||
1577 | for (j = 0, asd = ici->asd; ici->asd_sizes[j]; j++) { | |
1578 | scan_async_group(ici, asd, ici->asd_sizes[j]); | |
1579 | asd += ici->asd_sizes[j]; | |
1580 | } | |
1581 | } | |
40e2e092 | 1582 | #else |
e09da11d GL |
1583 | #define soc_camera_i2c_init(icd, sdesc) (-ENODEV) |
1584 | #define soc_camera_i2c_free(icd) do {} while (0) | |
1585 | #define scan_async_host(ici) do {} while (0) | |
40e2e092 GL |
1586 | #endif |
1587 | ||
40e2e092 | 1588 | /* Called during host-driver probe */ |
e09da11d GL |
1589 | static int soc_camera_probe(struct soc_camera_host *ici, |
1590 | struct soc_camera_device *icd) | |
e55222ef | 1591 | { |
25a34811 GL |
1592 | struct soc_camera_desc *sdesc = to_soc_camera_desc(icd); |
1593 | struct soc_camera_host_desc *shd = &sdesc->host_desc; | |
979ea1dd | 1594 | struct device *control = NULL; |
e55222ef GL |
1595 | int ret; |
1596 | ||
7dfff953 | 1597 | dev_info(icd->pdev, "Probing %s\n", dev_name(icd->pdev)); |
1c3bb743 | 1598 | |
ee02da64 HV |
1599 | /* |
1600 | * Currently the subdev with the largest number of controls (13) is | |
1601 | * ov6550. So let's pick 16 as a hint for the control handler. Note | |
1602 | * that this is a hint only: too large and you waste some memory, too | |
1603 | * small and there is a (very) small performance hit when looking up | |
1604 | * controls in the internal hash. | |
1605 | */ | |
1606 | ret = v4l2_ctrl_handler_init(&icd->ctrl_handler, 16); | |
1607 | if (ret < 0) | |
1608 | return ret; | |
1609 | ||
979ea1dd | 1610 | /* Must have icd->vdev before registering the device */ |
40e2e092 GL |
1611 | ret = video_dev_create(icd); |
1612 | if (ret < 0) | |
1613 | goto evdc; | |
1c3bb743 | 1614 | |
9aea470b GL |
1615 | /* |
1616 | * ..._video_start() will create a device node, video_register_device() | |
1617 | * itself is protected against concurrent open() calls, but we also have | |
1618 | * to protect our data also during client probing. | |
1619 | */ | |
9aea470b | 1620 | |
40e2e092 | 1621 | /* Non-i2c cameras, e.g., soc_camera_platform, have no board_info */ |
25a34811 | 1622 | if (shd->board_info) { |
e09da11d GL |
1623 | ret = soc_camera_i2c_init(icd, sdesc); |
1624 | if (ret < 0 && ret != -EPROBE_DEFER) | |
9aea470b | 1625 | goto eadd; |
25a34811 | 1626 | } else if (!shd->add_device || !shd->del_device) { |
1c3bb743 | 1627 | ret = -EINVAL; |
9aea470b | 1628 | goto eadd; |
40e2e092 | 1629 | } else { |
e09da11d | 1630 | mutex_lock(&ici->clk_lock); |
9aea470b | 1631 | ret = ici->ops->clock_start(ici); |
e09da11d | 1632 | mutex_unlock(&ici->clk_lock); |
9aea470b GL |
1633 | if (ret < 0) |
1634 | goto eadd; | |
1635 | ||
25a34811 GL |
1636 | if (shd->module_name) |
1637 | ret = request_module(shd->module_name); | |
979ea1dd | 1638 | |
25a34811 | 1639 | ret = shd->add_device(icd); |
40e2e092 GL |
1640 | if (ret < 0) |
1641 | goto eadddev; | |
1c3bb743 | 1642 | |
96c75399 GL |
1643 | /* |
1644 | * FIXME: this is racy, have to use driver-binding notification, | |
1645 | * when it is available | |
1646 | */ | |
979ea1dd | 1647 | control = to_soc_camera_control(icd); |
08590b96 | 1648 | if (!control || !control->driver || !dev_get_drvdata(control) || |
979ea1dd | 1649 | !try_module_get(control->driver->owner)) { |
25a34811 | 1650 | shd->del_device(icd); |
7ae77ee9 | 1651 | ret = -ENODEV; |
979ea1dd GL |
1652 | goto enodrv; |
1653 | } | |
40e2e092 | 1654 | } |
e55222ef | 1655 | |
e09da11d GL |
1656 | mutex_lock(&ici->host_lock); |
1657 | ret = soc_camera_probe_finish(icd); | |
dd669e90 | 1658 | mutex_unlock(&ici->host_lock); |
e09da11d GL |
1659 | if (ret < 0) |
1660 | goto efinish; | |
025c18a1 | 1661 | |
40e2e092 | 1662 | return 0; |
e55222ef | 1663 | |
e09da11d | 1664 | efinish: |
25a34811 | 1665 | if (shd->board_info) { |
e09da11d | 1666 | soc_camera_i2c_free(icd); |
979ea1dd | 1667 | } else { |
25a34811 | 1668 | shd->del_device(icd); |
979ea1dd | 1669 | module_put(control->driver->owner); |
979ea1dd | 1670 | enodrv: |
40e2e092 | 1671 | eadddev: |
e09da11d | 1672 | mutex_lock(&ici->clk_lock); |
9aea470b | 1673 | ici->ops->clock_stop(ici); |
e09da11d | 1674 | mutex_unlock(&ici->clk_lock); |
9aea470b GL |
1675 | } |
1676 | eadd: | |
40e2e092 | 1677 | video_device_release(icd->vdev); |
7b9d8c3c | 1678 | icd->vdev = NULL; |
e09da11d GL |
1679 | if (icd->vdev) { |
1680 | video_device_release(icd->vdev); | |
1681 | icd->vdev = NULL; | |
1682 | } | |
9aea470b | 1683 | evdc: |
ee02da64 | 1684 | v4l2_ctrl_handler_free(&icd->ctrl_handler); |
e55222ef GL |
1685 | return ret; |
1686 | } | |
1687 | ||
5d28d525 GL |
1688 | /* |
1689 | * This is called on device_unregister, which only means we have to disconnect | |
e09da11d GL |
1690 | * from the host, but not remove ourselves from the device list. With |
1691 | * asynchronous client probing this can also be called without | |
1692 | * soc_camera_probe_finish() having run. Careful with clean up. | |
5d28d525 | 1693 | */ |
7dfff953 | 1694 | static int soc_camera_remove(struct soc_camera_device *icd) |
e55222ef | 1695 | { |
25a34811 | 1696 | struct soc_camera_desc *sdesc = to_soc_camera_desc(icd); |
40e2e092 | 1697 | struct video_device *vdev = icd->vdev; |
e55222ef | 1698 | |
ee02da64 | 1699 | v4l2_ctrl_handler_free(&icd->ctrl_handler); |
40e2e092 | 1700 | if (vdev) { |
40e2e092 GL |
1701 | video_unregister_device(vdev); |
1702 | icd->vdev = NULL; | |
40e2e092 GL |
1703 | } |
1704 | ||
25a34811 | 1705 | if (sdesc->host_desc.board_info) { |
e09da11d | 1706 | soc_camera_i2c_free(icd); |
979ea1dd | 1707 | } else { |
e09da11d GL |
1708 | struct device *dev = to_soc_camera_control(icd); |
1709 | struct device_driver *drv = dev ? dev->driver : NULL; | |
979ea1dd | 1710 | if (drv) { |
25a34811 | 1711 | sdesc->host_desc.del_device(icd); |
979ea1dd GL |
1712 | module_put(drv->owner); |
1713 | } | |
1714 | } | |
e09da11d GL |
1715 | |
1716 | if (icd->num_user_formats) | |
1717 | soc_camera_free_user_formats(icd); | |
1718 | ||
1719 | if (icd->clk) { | |
1720 | /* For the synchronous case */ | |
1721 | v4l2_clk_unregister(icd->clk); | |
1722 | icd->clk = NULL; | |
1723 | } | |
1724 | ||
1725 | if (icd->sasc) | |
1726 | platform_device_unregister(icd->sasc->pdev); | |
025c18a1 | 1727 | |
e55222ef GL |
1728 | return 0; |
1729 | } | |
1730 | ||
6a6c8786 GL |
1731 | static int default_cropcap(struct soc_camera_device *icd, |
1732 | struct v4l2_cropcap *a) | |
1733 | { | |
1734 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1735 | return v4l2_subdev_call(sd, video, cropcap, a); | |
1736 | } | |
1737 | ||
1738 | static int default_g_crop(struct soc_camera_device *icd, struct v4l2_crop *a) | |
1739 | { | |
1740 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1741 | return v4l2_subdev_call(sd, video, g_crop, a); | |
1742 | } | |
1743 | ||
4f996594 | 1744 | static int default_s_crop(struct soc_camera_device *icd, const struct v4l2_crop *a) |
6a6c8786 GL |
1745 | { |
1746 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1747 | return v4l2_subdev_call(sd, video, s_crop, a); | |
1748 | } | |
1749 | ||
06e17821 JK |
1750 | static int default_g_parm(struct soc_camera_device *icd, |
1751 | struct v4l2_streamparm *parm) | |
1752 | { | |
1753 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1754 | return v4l2_subdev_call(sd, video, g_parm, parm); | |
1755 | } | |
1756 | ||
1757 | static int default_s_parm(struct soc_camera_device *icd, | |
1758 | struct v4l2_streamparm *parm) | |
1759 | { | |
1760 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1761 | return v4l2_subdev_call(sd, video, s_parm, parm); | |
1762 | } | |
1763 | ||
ad3537b5 GL |
1764 | static int default_enum_framesizes(struct soc_camera_device *icd, |
1765 | struct v4l2_frmsizeenum *fsize) | |
ed5b65dc QX |
1766 | { |
1767 | int ret; | |
1768 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1769 | const struct soc_camera_format_xlate *xlate; | |
1770 | __u32 pixfmt = fsize->pixel_format; | |
1771 | struct v4l2_frmsizeenum fsize_mbus = *fsize; | |
1772 | ||
1773 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); | |
1774 | if (!xlate) | |
1775 | return -EINVAL; | |
1776 | /* map xlate-code to pixel_format, sensor only handle xlate-code*/ | |
1777 | fsize_mbus.pixel_format = xlate->code; | |
1778 | ||
9633c086 | 1779 | ret = v4l2_subdev_call(sd, video, enum_framesizes, &fsize_mbus); |
ed5b65dc QX |
1780 | if (ret < 0) |
1781 | return ret; | |
1782 | ||
1783 | *fsize = fsize_mbus; | |
1784 | fsize->pixel_format = pixfmt; | |
1785 | ||
1786 | return 0; | |
1787 | } | |
1788 | ||
b8d9904c | 1789 | int soc_camera_host_register(struct soc_camera_host *ici) |
e55222ef | 1790 | { |
e55222ef | 1791 | struct soc_camera_host *ix; |
979ea1dd | 1792 | int ret; |
e55222ef | 1793 | |
64f5905e GL |
1794 | if (!ici || !ici->ops || |
1795 | !ici->ops->try_fmt || | |
1796 | !ici->ops->set_fmt || | |
1797 | !ici->ops->set_bus_param || | |
1798 | !ici->ops->querycap || | |
592c2aba GL |
1799 | ((!ici->ops->init_videobuf || |
1800 | !ici->ops->reqbufs) && | |
1801 | !ici->ops->init_videobuf2) || | |
a78fcc11 GL |
1802 | !ici->ops->clock_start || |
1803 | !ici->ops->clock_stop || | |
eff505fa | 1804 | !ici->ops->poll || |
979ea1dd | 1805 | !ici->v4l2_dev.dev) |
e55222ef GL |
1806 | return -EINVAL; |
1807 | ||
6a6c8786 GL |
1808 | if (!ici->ops->set_crop) |
1809 | ici->ops->set_crop = default_s_crop; | |
1810 | if (!ici->ops->get_crop) | |
1811 | ici->ops->get_crop = default_g_crop; | |
1812 | if (!ici->ops->cropcap) | |
1813 | ici->ops->cropcap = default_cropcap; | |
06e17821 JK |
1814 | if (!ici->ops->set_parm) |
1815 | ici->ops->set_parm = default_s_parm; | |
1816 | if (!ici->ops->get_parm) | |
1817 | ici->ops->get_parm = default_g_parm; | |
ad3537b5 GL |
1818 | if (!ici->ops->enum_framesizes) |
1819 | ici->ops->enum_framesizes = default_enum_framesizes; | |
6a6c8786 | 1820 | |
e55222ef GL |
1821 | mutex_lock(&list_lock); |
1822 | list_for_each_entry(ix, &hosts, list) { | |
1823 | if (ix->nr == ici->nr) { | |
979ea1dd GL |
1824 | ret = -EBUSY; |
1825 | goto edevreg; | |
e55222ef GL |
1826 | } |
1827 | } | |
1828 | ||
979ea1dd GL |
1829 | ret = v4l2_device_register(ici->v4l2_dev.dev, &ici->v4l2_dev); |
1830 | if (ret < 0) | |
1831 | goto edevreg; | |
eff505fa | 1832 | |
e55222ef GL |
1833 | list_add_tail(&ici->list, &hosts); |
1834 | mutex_unlock(&list_lock); | |
1835 | ||
2f9a0c88 | 1836 | mutex_init(&ici->host_lock); |
e09da11d GL |
1837 | mutex_init(&ici->clk_lock); |
1838 | ||
1839 | if (ici->asd_sizes) | |
1840 | /* | |
1841 | * No OF, host with a list of subdevices. Don't try to mix | |
1842 | * modes by initialising some groups statically and some | |
1843 | * dynamically! | |
1844 | */ | |
1845 | scan_async_host(ici); | |
1846 | else | |
1847 | /* Legacy: static platform devices from board data */ | |
1848 | scan_add_host(ici); | |
e55222ef GL |
1849 | |
1850 | return 0; | |
979ea1dd GL |
1851 | |
1852 | edevreg: | |
1853 | mutex_unlock(&list_lock); | |
1854 | return ret; | |
e55222ef GL |
1855 | } |
1856 | EXPORT_SYMBOL(soc_camera_host_register); | |
1857 | ||
1858 | /* Unregister all clients! */ | |
1859 | void soc_camera_host_unregister(struct soc_camera_host *ici) | |
1860 | { | |
e09da11d GL |
1861 | struct soc_camera_device *icd, *tmp; |
1862 | struct soc_camera_async_client *sasc; | |
1863 | LIST_HEAD(notifiers); | |
e55222ef GL |
1864 | |
1865 | mutex_lock(&list_lock); | |
e55222ef | 1866 | list_del(&ici->list); |
7dfff953 | 1867 | list_for_each_entry(icd, &devices, list) |
e09da11d GL |
1868 | if (icd->iface == ici->nr && icd->sasc) { |
1869 | /* as long as we hold the device, sasc won't be freed */ | |
1870 | get_device(icd->pdev); | |
1871 | list_add(&icd->sasc->list, ¬ifiers); | |
1872 | } | |
1873 | mutex_unlock(&list_lock); | |
1874 | ||
1875 | list_for_each_entry(sasc, ¬ifiers, list) { | |
1876 | /* Must call unlocked to avoid AB-BA dead-lock */ | |
1877 | v4l2_async_notifier_unregister(&sasc->notifier); | |
1878 | put_device(&sasc->pdev->dev); | |
1879 | } | |
1880 | ||
1881 | mutex_lock(&list_lock); | |
1882 | ||
1883 | list_for_each_entry_safe(icd, tmp, &devices, list) | |
1884 | if (icd->iface == ici->nr) | |
7dfff953 | 1885 | soc_camera_remove(icd); |
e55222ef GL |
1886 | |
1887 | mutex_unlock(&list_lock); | |
1888 | ||
979ea1dd | 1889 | v4l2_device_unregister(&ici->v4l2_dev); |
e55222ef GL |
1890 | } |
1891 | EXPORT_SYMBOL(soc_camera_host_unregister); | |
1892 | ||
1893 | /* Image capture device */ | |
40e2e092 | 1894 | static int soc_camera_device_register(struct soc_camera_device *icd) |
e55222ef GL |
1895 | { |
1896 | struct soc_camera_device *ix; | |
1897 | int num = -1, i; | |
1898 | ||
e09da11d | 1899 | mutex_lock(&list_lock); |
e55222ef GL |
1900 | for (i = 0; i < 256 && num < 0; i++) { |
1901 | num = i; | |
40e2e092 | 1902 | /* Check if this index is available on this interface */ |
e55222ef GL |
1903 | list_for_each_entry(ix, &devices, list) { |
1904 | if (ix->iface == icd->iface && ix->devnum == i) { | |
1905 | num = -1; | |
1906 | break; | |
1907 | } | |
1908 | } | |
1909 | } | |
1910 | ||
e09da11d | 1911 | if (num < 0) { |
5d28d525 GL |
1912 | /* |
1913 | * ok, we have 256 cameras on this host... | |
1914 | * man, stay reasonable... | |
1915 | */ | |
e09da11d | 1916 | mutex_unlock(&list_lock); |
e55222ef | 1917 | return -ENOMEM; |
e09da11d | 1918 | } |
e55222ef | 1919 | |
64ff9ba5 | 1920 | icd->devnum = num; |
64f5905e GL |
1921 | icd->use_count = 0; |
1922 | icd->host_priv = NULL; | |
e55222ef | 1923 | |
e09da11d GL |
1924 | /* |
1925 | * Dynamically allocated devices set the bit earlier, but it doesn't hurt setting | |
1926 | * it again | |
1927 | */ | |
1928 | i = to_platform_device(icd->pdev)->id; | |
1929 | if (i < 0) | |
1930 | /* One static (legacy) soc-camera platform device */ | |
1931 | i = 0; | |
1932 | if (i >= MAP_MAX_NUM) { | |
1933 | mutex_unlock(&list_lock); | |
1934 | return -EBUSY; | |
1935 | } | |
1936 | set_bit(i, device_map); | |
40e2e092 | 1937 | list_add_tail(&icd->list, &devices); |
e09da11d | 1938 | mutex_unlock(&list_lock); |
40e2e092 GL |
1939 | |
1940 | return 0; | |
e55222ef | 1941 | } |
e55222ef | 1942 | |
a399810c HV |
1943 | static const struct v4l2_ioctl_ops soc_camera_ioctl_ops = { |
1944 | .vidioc_querycap = soc_camera_querycap, | |
7ae77ee9 | 1945 | .vidioc_try_fmt_vid_cap = soc_camera_try_fmt_vid_cap, |
a399810c | 1946 | .vidioc_g_fmt_vid_cap = soc_camera_g_fmt_vid_cap, |
a399810c | 1947 | .vidioc_s_fmt_vid_cap = soc_camera_s_fmt_vid_cap, |
7ae77ee9 | 1948 | .vidioc_enum_fmt_vid_cap = soc_camera_enum_fmt_vid_cap, |
a399810c HV |
1949 | .vidioc_enum_input = soc_camera_enum_input, |
1950 | .vidioc_g_input = soc_camera_g_input, | |
1951 | .vidioc_s_input = soc_camera_s_input, | |
1952 | .vidioc_s_std = soc_camera_s_std, | |
2f0babb7 | 1953 | .vidioc_g_std = soc_camera_g_std, |
ad3537b5 | 1954 | .vidioc_enum_framesizes = soc_camera_enum_framesizes, |
a399810c | 1955 | .vidioc_reqbufs = soc_camera_reqbufs, |
a399810c HV |
1956 | .vidioc_querybuf = soc_camera_querybuf, |
1957 | .vidioc_qbuf = soc_camera_qbuf, | |
1958 | .vidioc_dqbuf = soc_camera_dqbuf, | |
7ae77ee9 GL |
1959 | .vidioc_create_bufs = soc_camera_create_bufs, |
1960 | .vidioc_prepare_buf = soc_camera_prepare_buf, | |
a399810c HV |
1961 | .vidioc_streamon = soc_camera_streamon, |
1962 | .vidioc_streamoff = soc_camera_streamoff, | |
a399810c HV |
1963 | .vidioc_cropcap = soc_camera_cropcap, |
1964 | .vidioc_g_crop = soc_camera_g_crop, | |
1965 | .vidioc_s_crop = soc_camera_s_crop, | |
3bfb4100 GL |
1966 | .vidioc_g_selection = soc_camera_g_selection, |
1967 | .vidioc_s_selection = soc_camera_s_selection, | |
c9f6ef69 GL |
1968 | .vidioc_g_parm = soc_camera_g_parm, |
1969 | .vidioc_s_parm = soc_camera_s_parm, | |
a399810c HV |
1970 | }; |
1971 | ||
40e2e092 | 1972 | static int video_dev_create(struct soc_camera_device *icd) |
e55222ef | 1973 | { |
7dfff953 | 1974 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
40e2e092 | 1975 | struct video_device *vdev = video_device_alloc(); |
e55222ef | 1976 | |
e55222ef | 1977 | if (!vdev) |
40e2e092 | 1978 | return -ENOMEM; |
e55222ef GL |
1979 | |
1980 | strlcpy(vdev->name, ici->drv_name, sizeof(vdev->name)); | |
1c3bb743 | 1981 | |
14381c26 | 1982 | vdev->v4l2_dev = &ici->v4l2_dev; |
e55222ef | 1983 | vdev->fops = &soc_camera_fops; |
a399810c | 1984 | vdev->ioctl_ops = &soc_camera_ioctl_ops; |
e55222ef | 1985 | vdev->release = video_device_release; |
ee02da64 | 1986 | vdev->ctrl_handler = &icd->ctrl_handler; |
dd669e90 | 1987 | vdev->lock = &ici->host_lock; |
e55222ef | 1988 | |
e55222ef GL |
1989 | icd->vdev = vdev; |
1990 | ||
1991 | return 0; | |
40e2e092 | 1992 | } |
e55222ef | 1993 | |
40e2e092 | 1994 | /* |
dd669e90 | 1995 | * Called from soc_camera_probe() above with .host_lock held |
40e2e092 | 1996 | */ |
979ea1dd | 1997 | static int soc_camera_video_start(struct soc_camera_device *icd) |
40e2e092 | 1998 | { |
d364ee4f | 1999 | const struct device_type *type = icd->vdev->dev.type; |
979ea1dd | 2000 | int ret; |
40e2e092 | 2001 | |
7dfff953 | 2002 | if (!icd->parent) |
40e2e092 GL |
2003 | return -ENODEV; |
2004 | ||
14381c26 | 2005 | video_set_drvdata(icd->vdev, icd); |
f6cc51a9 HV |
2006 | if (icd->vdev->tvnorms == 0) { |
2007 | /* disable the STD API if there are no tvnorms defined */ | |
2008 | v4l2_disable_ioctl(icd->vdev, VIDIOC_G_STD); | |
2009 | v4l2_disable_ioctl(icd->vdev, VIDIOC_S_STD); | |
2010 | v4l2_disable_ioctl(icd->vdev, VIDIOC_ENUMSTD); | |
2011 | } | |
46b21094 | 2012 | ret = video_register_device(icd->vdev, VFL_TYPE_GRABBER, -1); |
979ea1dd | 2013 | if (ret < 0) { |
7dfff953 | 2014 | dev_err(icd->pdev, "video_register_device failed: %d\n", ret); |
979ea1dd GL |
2015 | return ret; |
2016 | } | |
40e2e092 | 2017 | |
4f9fb5ed MCC |
2018 | /* Restore device type, possibly set by the subdevice driver */ |
2019 | icd->vdev->dev.type = type; | |
2020 | ||
979ea1dd | 2021 | return 0; |
e55222ef | 2022 | } |
e55222ef | 2023 | |
4c62e976 | 2024 | static int soc_camera_pdrv_probe(struct platform_device *pdev) |
0fd327bd | 2025 | { |
25a34811 GL |
2026 | struct soc_camera_desc *sdesc = pdev->dev.platform_data; |
2027 | struct soc_camera_subdev_desc *ssdd = &sdesc->subdev_desc; | |
40e2e092 | 2028 | struct soc_camera_device *icd; |
8a97d4c1 | 2029 | int ret; |
0fd327bd | 2030 | |
25a34811 | 2031 | if (!sdesc) |
40e2e092 | 2032 | return -EINVAL; |
0fd327bd | 2033 | |
02249369 | 2034 | icd = devm_kzalloc(&pdev->dev, sizeof(*icd), GFP_KERNEL); |
40e2e092 GL |
2035 | if (!icd) |
2036 | return -ENOMEM; | |
0fd327bd | 2037 | |
e09da11d GL |
2038 | /* |
2039 | * In the asynchronous case ssdd->num_regulators == 0 yet, so, the below | |
23272427 GL |
2040 | * regulator allocation is a dummy. They are actually requested by the |
2041 | * subdevice driver, using soc_camera_power_init(). Also note, that in | |
2042 | * that case regulators are attached to the I2C device and not to the | |
2043 | * camera platform device. | |
e09da11d | 2044 | */ |
d3f884a7 GL |
2045 | ret = devm_regulator_bulk_get(&pdev->dev, ssdd->sd_pdata.num_regulators, |
2046 | ssdd->sd_pdata.regulators); | |
8a97d4c1 GL |
2047 | if (ret < 0) |
2048 | return ret; | |
2049 | ||
25a34811 GL |
2050 | icd->iface = sdesc->host_desc.bus_id; |
2051 | icd->sdesc = sdesc; | |
979ea1dd | 2052 | icd->pdev = &pdev->dev; |
40e2e092 | 2053 | platform_set_drvdata(pdev, icd); |
0fd327bd | 2054 | |
6a6c8786 GL |
2055 | icd->user_width = DEFAULT_WIDTH; |
2056 | icd->user_height = DEFAULT_HEIGHT; | |
2057 | ||
02249369 | 2058 | return soc_camera_device_register(icd); |
c41debaf | 2059 | } |
0fd327bd | 2060 | |
5d28d525 GL |
2061 | /* |
2062 | * Only called on rmmod for each platform device, since they are not | |
40e2e092 | 2063 | * hot-pluggable. Now we know, that all our users - hosts and devices have |
5d28d525 GL |
2064 | * been unloaded already |
2065 | */ | |
4c62e976 | 2066 | static int soc_camera_pdrv_remove(struct platform_device *pdev) |
c41debaf | 2067 | { |
40e2e092 | 2068 | struct soc_camera_device *icd = platform_get_drvdata(pdev); |
e09da11d | 2069 | int i; |
c41debaf | 2070 | |
40e2e092 | 2071 | if (!icd) |
c41debaf GL |
2072 | return -EINVAL; |
2073 | ||
e09da11d GL |
2074 | i = pdev->id; |
2075 | if (i < 0) | |
2076 | i = 0; | |
2077 | ||
2078 | /* | |
2079 | * In synchronous mode with static platform devices this is called in a | |
2080 | * loop from drivers/base/dd.c::driver_detach(), no parallel execution, | |
2081 | * no need to lock. In asynchronous case the caller - | |
2082 | * soc_camera_host_unregister() - already holds the lock | |
2083 | */ | |
2084 | if (test_bit(i, device_map)) { | |
2085 | clear_bit(i, device_map); | |
2086 | list_del(&icd->list); | |
2087 | } | |
c41debaf | 2088 | |
0fd327bd GL |
2089 | return 0; |
2090 | } | |
2091 | ||
2092 | static struct platform_driver __refdata soc_camera_pdrv = { | |
1858c99d | 2093 | .probe = soc_camera_pdrv_probe, |
4c62e976 | 2094 | .remove = soc_camera_pdrv_remove, |
40e2e092 GL |
2095 | .driver = { |
2096 | .name = "soc-camera-pdrv", | |
2097 | .owner = THIS_MODULE, | |
0fd327bd GL |
2098 | }, |
2099 | }; | |
2100 | ||
ec0341b3 | 2101 | module_platform_driver(soc_camera_pdrv); |
e55222ef GL |
2102 | |
2103 | MODULE_DESCRIPTION("Image capture bus driver"); | |
2104 | MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>"); | |
2105 | MODULE_LICENSE("GPL"); | |
0fd327bd | 2106 | MODULE_ALIAS("platform:soc-camera-pdrv"); |