]>
Commit | Line | Data |
---|---|---|
a6c2ba28 | 1 | /* |
f7abcd38 | 2 | em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB video capture devices |
a6c2ba28 | 3 | |
f7abcd38 MCC |
4 | Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it> |
5 | Markus Rechberger <mrechberger@gmail.com> | |
2e7c6dc3 | 6 | Mauro Carvalho Chehab <mchehab@infradead.org> |
f7abcd38 | 7 | Sascha Sommer <saschasommer@freenet.de> |
a6c2ba28 | 8 | |
439090d7 MCC |
9 | Some parts based on SN9C10x PC Camera Controllers GPL driver made |
10 | by Luca Risolia <luca.risolia@studio.unibo.it> | |
11 | ||
a6c2ba28 AM |
12 | This program is free software; you can redistribute it and/or modify |
13 | it under the terms of the GNU General Public License as published by | |
14 | the Free Software Foundation; either version 2 of the License, or | |
15 | (at your option) any later version. | |
16 | ||
17 | This program is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
23 | along with this program; if not, write to the Free Software | |
24 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
25 | */ | |
26 | ||
27 | #include <linux/init.h> | |
28 | #include <linux/list.h> | |
29 | #include <linux/module.h> | |
30 | #include <linux/kernel.h> | |
e5589bef | 31 | #include <linux/bitmap.h> |
a6c2ba28 | 32 | #include <linux/usb.h> |
a6c2ba28 | 33 | #include <linux/i2c.h> |
b296fc60 | 34 | #include <linux/version.h> |
6d35c8f6 | 35 | #include <linux/mm.h> |
1e4baed3 | 36 | #include <linux/mutex.h> |
a6c2ba28 | 37 | |
f7abcd38 | 38 | #include "em28xx.h" |
c0477ad9 | 39 | #include <media/v4l2-common.h> |
2474ed44 | 40 | #include <media/msp3400.h> |
a6c2ba28 | 41 | |
f7abcd38 MCC |
42 | #define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \ |
43 | "Markus Rechberger <mrechberger@gmail.com>, " \ | |
2e7c6dc3 | 44 | "Mauro Carvalho Chehab <mchehab@infradead.org>, " \ |
f7abcd38 | 45 | "Sascha Sommer <saschasommer@freenet.de>" |
a6c2ba28 | 46 | |
f7abcd38 MCC |
47 | #define DRIVER_NAME "em28xx" |
48 | #define DRIVER_DESC "Empia em28xx based USB video device driver" | |
195a4ef6 | 49 | #define EM28XX_VERSION_CODE KERNEL_VERSION(0, 1, 0) |
a6c2ba28 | 50 | |
3acf2809 | 51 | #define em28xx_videodbg(fmt, arg...) do {\ |
4ac97914 MCC |
52 | if (video_debug) \ |
53 | printk(KERN_INFO "%s %s :"fmt, \ | |
f85c657f | 54 | dev->name, __FUNCTION__ , ##arg); } while (0) |
a6c2ba28 AM |
55 | |
56 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
57 | MODULE_DESCRIPTION(DRIVER_DESC); | |
58 | MODULE_LICENSE("GPL"); | |
59 | ||
3acf2809 | 60 | static LIST_HEAD(em28xx_devlist); |
9c75541f | 61 | |
9d4d9c05 | 62 | static unsigned int card[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; |
e5589bef MCC |
63 | static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; |
64 | static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; | |
596d92d5 | 65 | module_param_array(card, int, NULL, 0444); |
e5589bef MCC |
66 | module_param_array(video_nr, int, NULL, 0444); |
67 | module_param_array(vbi_nr, int, NULL, 0444); | |
596d92d5 | 68 | MODULE_PARM_DESC(card,"card type"); |
e5589bef MCC |
69 | MODULE_PARM_DESC(video_nr,"video device numbers"); |
70 | MODULE_PARM_DESC(vbi_nr,"vbi device numbers"); | |
596d92d5 | 71 | |
a6c2ba28 AM |
72 | static unsigned int video_debug = 0; |
73 | module_param(video_debug,int,0644); | |
74 | MODULE_PARM_DESC(video_debug,"enable debug messages [video]"); | |
75 | ||
e5589bef MCC |
76 | /* Bitmask marking allocated devices from 0 to EM28XX_MAXBOARDS */ |
77 | static unsigned long em28xx_devused; | |
78 | ||
a6c2ba28 | 79 | /* supported controls */ |
c0477ad9 | 80 | /* Common to all boards */ |
3acf2809 | 81 | static struct v4l2_queryctrl em28xx_qctrl[] = { |
c0477ad9 MCC |
82 | { |
83 | .id = V4L2_CID_AUDIO_VOLUME, | |
84 | .type = V4L2_CTRL_TYPE_INTEGER, | |
85 | .name = "Volume", | |
86 | .minimum = 0x0, | |
87 | .maximum = 0x1f, | |
88 | .step = 0x1, | |
89 | .default_value = 0x1f, | |
90 | .flags = 0, | |
91 | },{ | |
92 | .id = V4L2_CID_AUDIO_MUTE, | |
93 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
94 | .name = "Mute", | |
95 | .minimum = 0, | |
96 | .maximum = 1, | |
97 | .step = 1, | |
98 | .default_value = 1, | |
99 | .flags = 0, | |
100 | } | |
101 | }; | |
102 | ||
3acf2809 | 103 | static struct usb_driver em28xx_usb_driver; |
a6c2ba28 | 104 | |
a6c2ba28 AM |
105 | |
106 | /********************* v4l2 interface ******************************************/ | |
107 | ||
a6c2ba28 | 108 | /* |
3acf2809 | 109 | * em28xx_config() |
a6c2ba28 AM |
110 | * inits registers with sane defaults |
111 | */ | |
3acf2809 | 112 | static int em28xx_config(struct em28xx *dev) |
a6c2ba28 AM |
113 | { |
114 | ||
115 | /* Sets I2C speed to 100 KHz */ | |
2b2c93ac SS |
116 | if (!dev->is_em2800) |
117 | em28xx_write_regs_req(dev, 0x00, 0x06, "\x40", 1); | |
a6c2ba28 AM |
118 | |
119 | /* enable vbi capturing */ | |
e5589bef | 120 | |
9475fb1c MR |
121 | /* em28xx_write_regs_req(dev,0x00,0x0e,"\xC0",1); audio register */ |
122 | /* em28xx_write_regs_req(dev,0x00,0x0f,"\x80",1); clk register */ | |
e5589bef MCC |
123 | em28xx_write_regs_req(dev,0x00,0x11,"\x51",1); |
124 | ||
3acf2809 | 125 | em28xx_audio_usb_mute(dev, 1); |
a6c2ba28 AM |
126 | dev->mute = 1; /* maybe not the right place... */ |
127 | dev->volume = 0x1f; | |
3acf2809 MCC |
128 | em28xx_audio_analog_set(dev); |
129 | em28xx_audio_analog_setup(dev); | |
130 | em28xx_outfmt_set_yuv422(dev); | |
131 | em28xx_colorlevels_set_default(dev); | |
132 | em28xx_compression_disable(dev); | |
a6c2ba28 AM |
133 | |
134 | return 0; | |
135 | } | |
136 | ||
137 | /* | |
3acf2809 | 138 | * em28xx_config_i2c() |
a6c2ba28 AM |
139 | * configure i2c attached devices |
140 | */ | |
943a4902 | 141 | static void em28xx_config_i2c(struct em28xx *dev) |
a6c2ba28 | 142 | { |
c7c0b34c HV |
143 | struct v4l2_routing route; |
144 | ||
145 | route.input = INPUT(dev->ctl_input)->vmux; | |
146 | route.output = 0; | |
663d1ba2 | 147 | em28xx_i2c_call_clients(dev, VIDIOC_INT_RESET, NULL); |
c7c0b34c | 148 | em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route); |
f5762e44 | 149 | em28xx_i2c_call_clients(dev, VIDIOC_STREAMON, NULL); |
a6c2ba28 AM |
150 | } |
151 | ||
152 | /* | |
3acf2809 | 153 | * em28xx_empty_framequeues() |
a6c2ba28 AM |
154 | * prepare queues for incoming and outgoing frames |
155 | */ | |
3acf2809 | 156 | static void em28xx_empty_framequeues(struct em28xx *dev) |
a6c2ba28 AM |
157 | { |
158 | u32 i; | |
159 | ||
160 | INIT_LIST_HEAD(&dev->inqueue); | |
161 | INIT_LIST_HEAD(&dev->outqueue); | |
162 | ||
3acf2809 | 163 | for (i = 0; i < EM28XX_NUM_FRAMES; i++) { |
a6c2ba28 AM |
164 | dev->frame[i].state = F_UNUSED; |
165 | dev->frame[i].buf.bytesused = 0; | |
166 | } | |
167 | } | |
168 | ||
eac94356 MCC |
169 | static void video_mux(struct em28xx *dev, int index) |
170 | { | |
c7c0b34c HV |
171 | int ainput; |
172 | struct v4l2_routing route; | |
eac94356 | 173 | |
c7c0b34c HV |
174 | route.input = INPUT(index)->vmux; |
175 | route.output = 0; | |
eac94356 MCC |
176 | dev->ctl_input = index; |
177 | dev->ctl_ainput = INPUT(index)->amux; | |
178 | ||
c7c0b34c | 179 | em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route); |
eac94356 | 180 | |
eac94356 | 181 | if (dev->has_msp34xx) { |
9bb13a6d MCC |
182 | if (dev->i2s_speed) |
183 | em28xx_i2c_call_clients(dev, VIDIOC_INT_I2S_CLOCK_FREQ, &dev->i2s_speed); | |
2474ed44 | 184 | route.input = dev->ctl_ainput; |
07151724 | 185 | route.output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1); |
2474ed44 HV |
186 | /* Note: this is msp3400 specific */ |
187 | em28xx_i2c_call_clients(dev, VIDIOC_INT_S_AUDIO_ROUTING, &route); | |
eac94356 MCC |
188 | ainput = EM28XX_AUDIO_SRC_TUNER; |
189 | em28xx_audio_source(dev, ainput); | |
190 | } else { | |
191 | switch (dev->ctl_ainput) { | |
9475fb1c MR |
192 | case 0: |
193 | ainput = EM28XX_AUDIO_SRC_TUNER; | |
194 | break; | |
195 | default: | |
196 | ainput = EM28XX_AUDIO_SRC_LINE; | |
eac94356 MCC |
197 | } |
198 | em28xx_audio_source(dev, ainput); | |
199 | } | |
200 | } | |
201 | ||
a225452e MCC |
202 | /* Usage lock check functions */ |
203 | static int res_get(struct em28xx_fh *fh) | |
204 | { | |
205 | struct em28xx *dev = fh->dev; | |
206 | int rc = 0; | |
207 | ||
208 | /* This instance already has stream_on */ | |
209 | if (fh->stream_on) | |
210 | return rc; | |
211 | ||
212 | mutex_lock(&dev->lock); | |
213 | ||
214 | if (dev->stream_on) | |
215 | rc = -EINVAL; | |
216 | else { | |
217 | dev->stream_on = 1; | |
218 | fh->stream_on = 1; | |
219 | } | |
220 | ||
221 | mutex_unlock(&dev->lock); | |
222 | return rc; | |
223 | } | |
224 | ||
225 | static int res_check(struct em28xx_fh *fh) | |
226 | { | |
227 | return (fh->stream_on); | |
228 | } | |
229 | ||
230 | static void res_free(struct em28xx_fh *fh) | |
231 | { | |
232 | struct em28xx *dev = fh->dev; | |
233 | ||
234 | mutex_lock(&dev->lock); | |
235 | fh->stream_on = 0; | |
236 | dev->stream_on = 0; | |
237 | mutex_unlock(&dev->lock); | |
238 | } | |
239 | ||
a6c2ba28 | 240 | /* |
195a4ef6 | 241 | * em28xx_vm_open() |
a6c2ba28 | 242 | */ |
195a4ef6 | 243 | static void em28xx_vm_open(struct vm_area_struct *vma) |
a6c2ba28 | 244 | { |
195a4ef6 MCC |
245 | struct em28xx_frame_t *f = vma->vm_private_data; |
246 | f->vma_use_count++; | |
247 | } | |
9c75541f | 248 | |
195a4ef6 MCC |
249 | /* |
250 | * em28xx_vm_close() | |
251 | */ | |
252 | static void em28xx_vm_close(struct vm_area_struct *vma) | |
253 | { | |
254 | /* NOTE: buffers are not freed here */ | |
255 | struct em28xx_frame_t *f = vma->vm_private_data; | |
9c75541f | 256 | |
195a4ef6 MCC |
257 | if (f->vma_use_count) |
258 | f->vma_use_count--; | |
259 | } | |
a6c2ba28 | 260 | |
195a4ef6 MCC |
261 | static struct vm_operations_struct em28xx_vm_ops = { |
262 | .open = em28xx_vm_open, | |
263 | .close = em28xx_vm_close, | |
264 | }; | |
a6c2ba28 | 265 | |
195a4ef6 MCC |
266 | |
267 | /* | |
268 | * em28xx_get_ctrl() | |
269 | * return the current saturation, brightness or contrast, mute state | |
270 | */ | |
271 | static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl) | |
272 | { | |
273 | switch (ctrl->id) { | |
274 | case V4L2_CID_AUDIO_MUTE: | |
275 | ctrl->value = dev->mute; | |
276 | return 0; | |
277 | case V4L2_CID_AUDIO_VOLUME: | |
278 | ctrl->value = dev->volume; | |
279 | return 0; | |
280 | default: | |
281 | return -EINVAL; | |
a6c2ba28 | 282 | } |
195a4ef6 | 283 | } |
a6c2ba28 | 284 | |
195a4ef6 MCC |
285 | /* |
286 | * em28xx_set_ctrl() | |
287 | * mute or set new saturation, brightness or contrast | |
288 | */ | |
289 | static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl) | |
290 | { | |
291 | switch (ctrl->id) { | |
292 | case V4L2_CID_AUDIO_MUTE: | |
293 | if (ctrl->value != dev->mute) { | |
294 | dev->mute = ctrl->value; | |
295 | em28xx_audio_usb_mute(dev, ctrl->value); | |
296 | return em28xx_audio_analog_set(dev); | |
297 | } | |
298 | return 0; | |
299 | case V4L2_CID_AUDIO_VOLUME: | |
300 | dev->volume = ctrl->value; | |
301 | return em28xx_audio_analog_set(dev); | |
302 | default: | |
303 | return -EINVAL; | |
304 | } | |
305 | } | |
a6c2ba28 | 306 | |
195a4ef6 MCC |
307 | /* |
308 | * em28xx_stream_interrupt() | |
309 | * stops streaming | |
310 | */ | |
311 | static int em28xx_stream_interrupt(struct em28xx *dev) | |
312 | { | |
313 | int rc = 0; | |
a6c2ba28 | 314 | |
195a4ef6 | 315 | /* stop reading from the device */ |
a6c2ba28 | 316 | |
195a4ef6 MCC |
317 | dev->stream = STREAM_INTERRUPT; |
318 | rc = wait_event_timeout(dev->wait_stream, | |
319 | (dev->stream == STREAM_OFF) || | |
320 | (dev->state & DEV_DISCONNECTED), | |
321 | EM28XX_URB_TIMEOUT); | |
e5d4a56d | 322 | |
195a4ef6 MCC |
323 | if (rc) { |
324 | dev->state |= DEV_MISCONFIGURED; | |
325 | em28xx_videodbg("device is misconfigured; close and " | |
326 | "open /dev/video%d again\n", | |
327 | dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN); | |
328 | return rc; | |
329 | } | |
e5589bef | 330 | |
195a4ef6 MCC |
331 | return 0; |
332 | } | |
333 | ||
334 | ||
335 | static int check_dev(struct em28xx *dev) | |
336 | { | |
337 | if (dev->state & DEV_DISCONNECTED) { | |
338 | em28xx_errdev("v4l2 ioctl: device not present\n"); | |
339 | return -ENODEV; | |
e5589bef | 340 | } |
a6c2ba28 | 341 | |
195a4ef6 MCC |
342 | if (dev->state & DEV_MISCONFIGURED) { |
343 | em28xx_errdev("v4l2 ioctl: device is misconfigured; " | |
344 | "close and open it again\n"); | |
345 | return -EIO; | |
346 | } | |
347 | return 0; | |
348 | } | |
a6c2ba28 | 349 | |
195a4ef6 MCC |
350 | static void get_scale(struct em28xx *dev, |
351 | unsigned int width, unsigned int height, | |
352 | unsigned int *hscale, unsigned int *vscale) | |
353 | { | |
354 | unsigned int maxw = norm_maxw(dev); | |
355 | unsigned int maxh = norm_maxh(dev); | |
356 | ||
357 | *hscale = (((unsigned long)maxw) << 12) / width - 4096L; | |
358 | if (*hscale >= 0x4000) | |
359 | *hscale = 0x3fff; | |
360 | ||
361 | *vscale = (((unsigned long)maxh) << 12) / height - 4096L; | |
362 | if (*vscale >= 0x4000) | |
363 | *vscale = 0x3fff; | |
a6c2ba28 AM |
364 | } |
365 | ||
195a4ef6 MCC |
366 | /* ------------------------------------------------------------------ |
367 | IOCTL vidioc handling | |
368 | ------------------------------------------------------------------*/ | |
369 | ||
370 | static int vidioc_g_fmt_cap(struct file *file, void *priv, | |
371 | struct v4l2_format *f) | |
a6c2ba28 | 372 | { |
195a4ef6 MCC |
373 | struct em28xx_fh *fh = priv; |
374 | struct em28xx *dev = fh->dev; | |
a6c2ba28 | 375 | |
195a4ef6 | 376 | mutex_lock(&dev->lock); |
e5589bef | 377 | |
195a4ef6 MCC |
378 | f->fmt.pix.width = dev->width; |
379 | f->fmt.pix.height = dev->height; | |
380 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; | |
381 | f->fmt.pix.bytesperline = dev->bytesperline; | |
382 | f->fmt.pix.sizeimage = dev->frame_size; | |
383 | f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; | |
e5589bef | 384 | |
195a4ef6 MCC |
385 | /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */ |
386 | f->fmt.pix.field = dev->interlaced ? | |
387 | V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; | |
e5589bef | 388 | |
195a4ef6 MCC |
389 | mutex_unlock(&dev->lock); |
390 | return 0; | |
a6c2ba28 AM |
391 | } |
392 | ||
195a4ef6 MCC |
393 | static int vidioc_try_fmt_cap(struct file *file, void *priv, |
394 | struct v4l2_format *f) | |
a6c2ba28 | 395 | { |
195a4ef6 MCC |
396 | struct em28xx_fh *fh = priv; |
397 | struct em28xx *dev = fh->dev; | |
398 | int width = f->fmt.pix.width; | |
399 | int height = f->fmt.pix.height; | |
400 | unsigned int maxw = norm_maxw(dev); | |
401 | unsigned int maxh = norm_maxh(dev); | |
402 | unsigned int hscale, vscale; | |
403 | ||
404 | /* width must even because of the YUYV format | |
405 | height must be even because of interlacing */ | |
406 | height &= 0xfffe; | |
407 | width &= 0xfffe; | |
a6c2ba28 | 408 | |
195a4ef6 MCC |
409 | if (height < 32) |
410 | height = 32; | |
411 | if (height > maxh) | |
412 | height = maxh; | |
413 | if (width < 48) | |
414 | width = 48; | |
415 | if (width > maxw) | |
416 | width = maxw; | |
a6c2ba28 | 417 | |
195a4ef6 | 418 | mutex_lock(&dev->lock); |
a225452e | 419 | |
195a4ef6 MCC |
420 | if (dev->is_em2800) { |
421 | /* the em2800 can only scale down to 50% */ | |
422 | if (height % (maxh / 2)) | |
423 | height = maxh; | |
424 | if (width % (maxw / 2)) | |
425 | width = maxw; | |
426 | /* according to empiatech support */ | |
427 | /* the MaxPacketSize is to small to support */ | |
428 | /* framesizes larger than 640x480 @ 30 fps */ | |
429 | /* or 640x576 @ 25 fps. As this would cut */ | |
430 | /* of a part of the image we prefer */ | |
431 | /* 360x576 or 360x480 for now */ | |
432 | if (width == maxw && height == maxh) | |
433 | width /= 2; | |
434 | } | |
a225452e | 435 | |
195a4ef6 | 436 | get_scale(dev, width, height, &hscale, &vscale); |
a6c2ba28 | 437 | |
195a4ef6 MCC |
438 | width = (((unsigned long)maxw) << 12) / (hscale + 4096L); |
439 | height = (((unsigned long)maxh) << 12) / (vscale + 4096L); | |
a6c2ba28 | 440 | |
195a4ef6 MCC |
441 | f->fmt.pix.width = width; |
442 | f->fmt.pix.height = height; | |
443 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; | |
444 | f->fmt.pix.bytesperline = width * 2; | |
445 | f->fmt.pix.sizeimage = width * 2 * height; | |
446 | f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; | |
447 | f->fmt.pix.field = V4L2_FIELD_INTERLACED; | |
a6c2ba28 | 448 | |
3593cab5 | 449 | mutex_unlock(&dev->lock); |
a6c2ba28 AM |
450 | return 0; |
451 | } | |
452 | ||
195a4ef6 MCC |
453 | static int vidioc_s_fmt_cap(struct file *file, void *priv, |
454 | struct v4l2_format *f) | |
a6c2ba28 | 455 | { |
195a4ef6 MCC |
456 | struct em28xx_fh *fh = priv; |
457 | struct em28xx *dev = fh->dev; | |
458 | int rc, i; | |
a6c2ba28 | 459 | |
195a4ef6 MCC |
460 | rc = check_dev(dev); |
461 | if (rc < 0) | |
462 | return rc; | |
a225452e | 463 | |
195a4ef6 | 464 | vidioc_try_fmt_cap(file, priv, f); |
a225452e | 465 | |
5a80415b SS |
466 | mutex_lock(&dev->lock); |
467 | ||
195a4ef6 MCC |
468 | for (i = 0; i < dev->num_frames; i++) |
469 | if (dev->frame[i].vma_use_count) { | |
470 | em28xx_videodbg("VIDIOC_S_FMT failed. " | |
471 | "Unmap the buffers first.\n"); | |
472 | rc = -EINVAL; | |
473 | goto err; | |
e5589bef | 474 | } |
195a4ef6 MCC |
475 | |
476 | /* stop io in case it is already in progress */ | |
477 | if (dev->stream == STREAM_ON) { | |
478 | em28xx_videodbg("VIDIOC_SET_FMT: interrupting stream\n"); | |
479 | rc = em28xx_stream_interrupt(dev); | |
480 | if (rc < 0) | |
481 | goto err; | |
e5589bef MCC |
482 | } |
483 | ||
195a4ef6 MCC |
484 | em28xx_release_buffers(dev); |
485 | dev->io = IO_NONE; | |
a6c2ba28 | 486 | |
195a4ef6 MCC |
487 | /* set new image size */ |
488 | dev->width = f->fmt.pix.width; | |
489 | dev->height = f->fmt.pix.height; | |
490 | dev->frame_size = dev->width * dev->height * 2; | |
491 | dev->field_size = dev->frame_size >> 1; | |
492 | dev->bytesperline = dev->width * 2; | |
493 | get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale); | |
a6c2ba28 | 494 | |
195a4ef6 MCC |
495 | /* FIXME: This is really weird! Why capture is starting with |
496 | this ioctl ??? | |
497 | */ | |
498 | em28xx_uninit_isoc(dev); | |
499 | em28xx_set_alternate(dev); | |
500 | em28xx_capture_start(dev, 1); | |
501 | em28xx_resolution_set(dev); | |
502 | em28xx_init_isoc(dev); | |
503 | rc = 0; | |
504 | ||
505 | err: | |
506 | mutex_unlock(&dev->lock); | |
507 | return rc; | |
508 | } | |
509 | ||
510 | static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm) | |
511 | { | |
512 | struct em28xx_fh *fh = priv; | |
513 | struct em28xx *dev = fh->dev; | |
514 | struct v4l2_format f; | |
195a4ef6 MCC |
515 | int rc; |
516 | ||
517 | rc = check_dev(dev); | |
518 | if (rc < 0) | |
519 | return rc; | |
520 | ||
195a4ef6 | 521 | mutex_lock(&dev->lock); |
7d497f8a | 522 | dev->norm = *norm; |
195a4ef6 | 523 | mutex_unlock(&dev->lock); |
a6c2ba28 | 524 | |
195a4ef6 MCC |
525 | /* Adjusts width/height, if needed */ |
526 | f.fmt.pix.width = dev->width; | |
527 | f.fmt.pix.height = dev->height; | |
528 | vidioc_try_fmt_cap(file, priv, &f); | |
a6c2ba28 | 529 | |
195a4ef6 | 530 | mutex_lock(&dev->lock); |
a6c2ba28 | 531 | |
195a4ef6 MCC |
532 | /* set new image size */ |
533 | dev->width = f.fmt.pix.width; | |
534 | dev->height = f.fmt.pix.height; | |
535 | dev->frame_size = dev->width * dev->height * 2; | |
536 | dev->field_size = dev->frame_size >> 1; | |
537 | dev->bytesperline = dev->width * 2; | |
538 | get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale); | |
a6c2ba28 | 539 | |
195a4ef6 | 540 | em28xx_resolution_set(dev); |
7d497f8a | 541 | em28xx_i2c_call_clients(dev, VIDIOC_S_STD, &dev->norm); |
a6c2ba28 | 542 | |
195a4ef6 MCC |
543 | mutex_unlock(&dev->lock); |
544 | return 0; | |
545 | } | |
9e31ced8 | 546 | |
195a4ef6 MCC |
547 | static const char *iname[] = { |
548 | [EM28XX_VMUX_COMPOSITE1] = "Composite1", | |
549 | [EM28XX_VMUX_COMPOSITE2] = "Composite2", | |
550 | [EM28XX_VMUX_COMPOSITE3] = "Composite3", | |
551 | [EM28XX_VMUX_COMPOSITE4] = "Composite4", | |
552 | [EM28XX_VMUX_SVIDEO] = "S-Video", | |
553 | [EM28XX_VMUX_TELEVISION] = "Television", | |
554 | [EM28XX_VMUX_CABLE] = "Cable TV", | |
555 | [EM28XX_VMUX_DVB] = "DVB", | |
556 | [EM28XX_VMUX_DEBUG] = "for debug only", | |
557 | }; | |
9e31ced8 | 558 | |
195a4ef6 MCC |
559 | static int vidioc_enum_input(struct file *file, void *priv, |
560 | struct v4l2_input *i) | |
561 | { | |
562 | struct em28xx_fh *fh = priv; | |
563 | struct em28xx *dev = fh->dev; | |
564 | unsigned int n; | |
9e31ced8 | 565 | |
195a4ef6 MCC |
566 | n = i->index; |
567 | if (n >= MAX_EM28XX_INPUT) | |
568 | return -EINVAL; | |
569 | if (0 == INPUT(n)->type) | |
570 | return -EINVAL; | |
9e31ced8 | 571 | |
195a4ef6 MCC |
572 | i->index = n; |
573 | i->type = V4L2_INPUT_TYPE_CAMERA; | |
a6c2ba28 | 574 | |
195a4ef6 | 575 | strcpy(i->name, iname[INPUT(n)->type]); |
a6c2ba28 | 576 | |
195a4ef6 MCC |
577 | if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) || |
578 | (EM28XX_VMUX_CABLE == INPUT(n)->type)) | |
579 | i->type = V4L2_INPUT_TYPE_TUNER; | |
580 | ||
7d497f8a | 581 | i->std = dev->vdev->tvnorms; |
195a4ef6 MCC |
582 | |
583 | return 0; | |
a6c2ba28 AM |
584 | } |
585 | ||
195a4ef6 | 586 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) |
a6c2ba28 | 587 | { |
195a4ef6 MCC |
588 | struct em28xx_fh *fh = priv; |
589 | struct em28xx *dev = fh->dev; | |
a6c2ba28 | 590 | |
195a4ef6 MCC |
591 | *i = dev->ctl_input; |
592 | ||
593 | return 0; | |
594 | } | |
595 | ||
596 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) | |
597 | { | |
598 | struct em28xx_fh *fh = priv; | |
599 | struct em28xx *dev = fh->dev; | |
600 | int rc; | |
601 | ||
602 | rc = check_dev(dev); | |
603 | if (rc < 0) | |
604 | return rc; | |
605 | ||
606 | if (i >= MAX_EM28XX_INPUT) | |
607 | return -EINVAL; | |
608 | if (0 == INPUT(i)->type) | |
609 | return -EINVAL; | |
a225452e | 610 | |
5a80415b | 611 | mutex_lock(&dev->lock); |
a6c2ba28 | 612 | |
195a4ef6 MCC |
613 | video_mux(dev, i); |
614 | ||
615 | mutex_unlock(&dev->lock); | |
616 | return 0; | |
617 | } | |
618 | ||
619 | static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a) | |
620 | { | |
621 | struct em28xx_fh *fh = priv; | |
622 | struct em28xx *dev = fh->dev; | |
623 | unsigned int index = a->index; | |
624 | ||
625 | if (a->index > 1) | |
626 | return -EINVAL; | |
627 | ||
628 | index = dev->ctl_ainput; | |
629 | ||
630 | if (index == 0) { | |
631 | strcpy(a->name, "Television"); | |
a6c2ba28 | 632 | } else { |
195a4ef6 MCC |
633 | strcpy(a->name, "Line In"); |
634 | } | |
635 | a->capability = V4L2_AUDCAP_STEREO; | |
636 | a->index = index; | |
637 | ||
638 | return 0; | |
639 | } | |
640 | ||
641 | static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a) | |
642 | { | |
643 | struct em28xx_fh *fh = priv; | |
644 | struct em28xx *dev = fh->dev; | |
645 | ||
646 | if (a->index != dev->ctl_ainput) | |
647 | return -EINVAL; | |
648 | ||
649 | return 0; | |
650 | } | |
651 | ||
652 | static int vidioc_queryctrl(struct file *file, void *priv, | |
653 | struct v4l2_queryctrl *qc) | |
654 | { | |
655 | struct em28xx_fh *fh = priv; | |
656 | struct em28xx *dev = fh->dev; | |
657 | int id = qc->id; | |
658 | int i; | |
659 | int rc; | |
660 | ||
661 | rc = check_dev(dev); | |
662 | if (rc < 0) | |
663 | return rc; | |
664 | ||
665 | memset(qc, 0, sizeof(*qc)); | |
666 | ||
667 | qc->id = id; | |
668 | ||
669 | if (!dev->has_msp34xx) { | |
670 | for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) { | |
671 | if (qc->id && qc->id == em28xx_qctrl[i].id) { | |
672 | memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc)); | |
673 | return 0; | |
a6c2ba28 AM |
674 | } |
675 | } | |
195a4ef6 MCC |
676 | } |
677 | mutex_lock(&dev->lock); | |
678 | em28xx_i2c_call_clients(dev, VIDIOC_QUERYCTRL, qc); | |
679 | mutex_unlock(&dev->lock); | |
a6c2ba28 | 680 | |
195a4ef6 MCC |
681 | if (qc->type) |
682 | return 0; | |
683 | else | |
684 | return -EINVAL; | |
685 | } | |
a6c2ba28 | 686 | |
195a4ef6 MCC |
687 | static int vidioc_g_ctrl(struct file *file, void *priv, |
688 | struct v4l2_control *ctrl) | |
689 | { | |
690 | struct em28xx_fh *fh = priv; | |
691 | struct em28xx *dev = fh->dev; | |
692 | int rc; | |
a6c2ba28 | 693 | |
195a4ef6 MCC |
694 | rc = check_dev(dev); |
695 | if (rc < 0) | |
696 | return rc; | |
697 | mutex_lock(&dev->lock); | |
a6c2ba28 | 698 | |
195a4ef6 MCC |
699 | if (!dev->has_msp34xx) |
700 | rc = em28xx_get_ctrl(dev, ctrl); | |
701 | else | |
702 | rc = -EINVAL; | |
703 | ||
704 | if (rc == -EINVAL) { | |
705 | em28xx_i2c_call_clients(dev, VIDIOC_G_CTRL, ctrl); | |
706 | rc = 0; | |
707 | } | |
708 | ||
709 | mutex_unlock(&dev->lock); | |
710 | return rc; | |
711 | } | |
712 | ||
713 | static int vidioc_s_ctrl(struct file *file, void *priv, | |
714 | struct v4l2_control *ctrl) | |
715 | { | |
716 | struct em28xx_fh *fh = priv; | |
717 | struct em28xx *dev = fh->dev; | |
718 | u8 i; | |
719 | int rc; | |
720 | ||
721 | rc = check_dev(dev); | |
722 | if (rc < 0) | |
723 | return rc; | |
724 | ||
725 | mutex_lock(&dev->lock); | |
726 | ||
727 | if (dev->has_msp34xx) | |
728 | em28xx_i2c_call_clients(dev, VIDIOC_S_CTRL, ctrl); | |
729 | else { | |
730 | rc = 1; | |
731 | for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) { | |
732 | if (ctrl->id == em28xx_qctrl[i].id) { | |
733 | if (ctrl->value < em28xx_qctrl[i].minimum || | |
734 | ctrl->value > em28xx_qctrl[i].maximum) { | |
735 | rc = -ERANGE; | |
736 | break; | |
737 | } | |
738 | ||
739 | rc = em28xx_set_ctrl(dev, ctrl); | |
740 | break; | |
741 | } | |
a6c2ba28 AM |
742 | } |
743 | } | |
744 | ||
195a4ef6 MCC |
745 | /* Control not found - try to send it to the attached devices */ |
746 | if (rc == 1) { | |
747 | em28xx_i2c_call_clients(dev, VIDIOC_S_CTRL, ctrl); | |
748 | rc = 0; | |
749 | } | |
750 | ||
5a80415b | 751 | mutex_unlock(&dev->lock); |
195a4ef6 | 752 | return rc; |
a6c2ba28 AM |
753 | } |
754 | ||
195a4ef6 MCC |
755 | static int vidioc_g_tuner(struct file *file, void *priv, |
756 | struct v4l2_tuner *t) | |
a6c2ba28 | 757 | { |
195a4ef6 MCC |
758 | struct em28xx_fh *fh = priv; |
759 | struct em28xx *dev = fh->dev; | |
760 | int rc; | |
761 | ||
762 | rc = check_dev(dev); | |
763 | if (rc < 0) | |
764 | return rc; | |
765 | ||
766 | if (0 != t->index) | |
767 | return -EINVAL; | |
768 | ||
769 | strcpy(t->name, "Tuner"); | |
770 | ||
771 | mutex_lock(&dev->lock); | |
772 | ||
773 | em28xx_i2c_call_clients(dev, VIDIOC_G_TUNER, t); | |
774 | ||
775 | mutex_unlock(&dev->lock); | |
776 | return 0; | |
a6c2ba28 AM |
777 | } |
778 | ||
195a4ef6 MCC |
779 | static int vidioc_s_tuner(struct file *file, void *priv, |
780 | struct v4l2_tuner *t) | |
a6c2ba28 | 781 | { |
195a4ef6 MCC |
782 | struct em28xx_fh *fh = priv; |
783 | struct em28xx *dev = fh->dev; | |
784 | int rc; | |
63337dd3 | 785 | |
195a4ef6 MCC |
786 | rc = check_dev(dev); |
787 | if (rc < 0) | |
788 | return rc; | |
789 | ||
790 | if (0 != t->index) | |
791 | return -EINVAL; | |
792 | ||
793 | mutex_lock(&dev->lock); | |
794 | ||
795 | em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, t); | |
796 | ||
797 | mutex_unlock(&dev->lock); | |
798 | return 0; | |
a6c2ba28 AM |
799 | } |
800 | ||
195a4ef6 MCC |
801 | static int vidioc_g_frequency(struct file *file, void *priv, |
802 | struct v4l2_frequency *f) | |
803 | { | |
804 | struct em28xx_fh *fh = priv; | |
805 | struct em28xx *dev = fh->dev; | |
a6c2ba28 | 806 | |
195a4ef6 MCC |
807 | f->type = V4L2_TUNER_ANALOG_TV; |
808 | f->frequency = dev->ctl_freq; | |
809 | ||
810 | return 0; | |
811 | } | |
812 | ||
813 | static int vidioc_s_frequency(struct file *file, void *priv, | |
814 | struct v4l2_frequency *f) | |
a6c2ba28 | 815 | { |
195a4ef6 MCC |
816 | struct em28xx_fh *fh = priv; |
817 | struct em28xx *dev = fh->dev; | |
818 | int rc; | |
9c75541f | 819 | |
195a4ef6 MCC |
820 | rc = check_dev(dev); |
821 | if (rc < 0) | |
822 | return rc; | |
823 | ||
824 | if (0 != f->tuner) | |
825 | return -EINVAL; | |
826 | ||
827 | if (V4L2_TUNER_ANALOG_TV != f->type) | |
828 | return -EINVAL; | |
a225452e MCC |
829 | |
830 | mutex_lock(&dev->lock); | |
a3a048ce | 831 | |
195a4ef6 MCC |
832 | dev->ctl_freq = f->frequency; |
833 | em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f); | |
a6c2ba28 | 834 | |
195a4ef6 MCC |
835 | mutex_unlock(&dev->lock); |
836 | return 0; | |
837 | } | |
a6c2ba28 | 838 | |
195a4ef6 MCC |
839 | static int vidioc_cropcap(struct file *file, void *priv, |
840 | struct v4l2_cropcap *cc) | |
841 | { | |
842 | struct em28xx_fh *fh = priv; | |
843 | struct em28xx *dev = fh->dev; | |
844 | ||
845 | if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
a6c2ba28 | 846 | return -EINVAL; |
a6c2ba28 | 847 | |
195a4ef6 MCC |
848 | cc->bounds.left = 0; |
849 | cc->bounds.top = 0; | |
850 | cc->bounds.width = dev->width; | |
851 | cc->bounds.height = dev->height; | |
852 | cc->defrect = cc->bounds; | |
853 | cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */ | |
854 | cc->pixelaspect.denominator = 59; | |
855 | ||
856 | return 0; | |
857 | } | |
858 | ||
859 | static int vidioc_streamon(struct file *file, void *priv, | |
860 | enum v4l2_buf_type type) | |
861 | { | |
862 | struct em28xx_fh *fh = priv; | |
863 | struct em28xx *dev = fh->dev; | |
864 | int rc; | |
865 | ||
866 | rc = check_dev(dev); | |
867 | if (rc < 0) | |
868 | return rc; | |
869 | ||
870 | if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP) | |
a6c2ba28 | 871 | return -EINVAL; |
195a4ef6 MCC |
872 | |
873 | if (list_empty(&dev->inqueue)) | |
874 | return -EINVAL; | |
875 | ||
876 | mutex_lock(&dev->lock); | |
877 | ||
878 | if (unlikely(res_get(fh) < 0)) { | |
879 | mutex_unlock(&dev->lock); | |
880 | return -EBUSY; | |
a6c2ba28 AM |
881 | } |
882 | ||
195a4ef6 | 883 | dev->stream = STREAM_ON; /* FIXME: Start video capture here? */ |
a6c2ba28 | 884 | |
195a4ef6 MCC |
885 | mutex_unlock(&dev->lock); |
886 | return 0; | |
887 | } | |
888 | ||
889 | static int vidioc_streamoff(struct file *file, void *priv, | |
890 | enum v4l2_buf_type type) | |
891 | { | |
892 | struct em28xx_fh *fh = priv; | |
893 | struct em28xx *dev = fh->dev; | |
894 | int rc; | |
895 | ||
896 | rc = check_dev(dev); | |
897 | if (rc < 0) | |
898 | return rc; | |
899 | ||
900 | if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP) | |
901 | return -EINVAL; | |
902 | ||
903 | mutex_lock(&dev->lock); | |
904 | ||
905 | if (dev->stream == STREAM_ON) { | |
906 | em28xx_videodbg("VIDIOC_STREAMOFF: interrupting stream\n"); | |
907 | rc = em28xx_stream_interrupt(dev); | |
908 | if (rc < 0) { | |
5a80415b | 909 | mutex_unlock(&dev->lock); |
195a4ef6 | 910 | return rc; |
a6c2ba28 | 911 | } |
a6c2ba28 AM |
912 | } |
913 | ||
195a4ef6 | 914 | em28xx_empty_framequeues(dev); |
a6c2ba28 | 915 | |
5a80415b | 916 | mutex_unlock(&dev->lock); |
a6c2ba28 AM |
917 | return 0; |
918 | } | |
919 | ||
195a4ef6 MCC |
920 | static int vidioc_querycap(struct file *file, void *priv, |
921 | struct v4l2_capability *cap) | |
a6c2ba28 | 922 | { |
195a4ef6 MCC |
923 | struct em28xx_fh *fh = priv; |
924 | struct em28xx *dev = fh->dev; | |
925 | ||
926 | strlcpy(cap->driver, "em28xx", sizeof(cap->driver)); | |
927 | strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card)); | |
928 | strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info)); | |
929 | ||
930 | cap->version = EM28XX_VERSION_CODE; | |
931 | ||
932 | cap->capabilities = | |
933 | V4L2_CAP_SLICED_VBI_CAPTURE | | |
934 | V4L2_CAP_VIDEO_CAPTURE | | |
935 | V4L2_CAP_AUDIO | | |
936 | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; | |
937 | ||
938 | if (dev->has_tuner) | |
939 | cap->capabilities |= V4L2_CAP_TUNER; | |
940 | ||
941 | return 0; | |
c0477ad9 MCC |
942 | } |
943 | ||
195a4ef6 MCC |
944 | static int vidioc_enum_fmt_cap(struct file *file, void *priv, |
945 | struct v4l2_fmtdesc *fmtd) | |
a6c2ba28 | 946 | { |
195a4ef6 | 947 | if (fmtd->index != 0) |
c0477ad9 | 948 | return -EINVAL; |
195a4ef6 MCC |
949 | |
950 | fmtd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
951 | strcpy(fmtd->description, "Packed YUY2"); | |
952 | fmtd->pixelformat = V4L2_PIX_FMT_YUYV; | |
953 | memset(fmtd->reserved, 0, sizeof(fmtd->reserved)); | |
954 | ||
955 | return 0; | |
c0477ad9 MCC |
956 | } |
957 | ||
195a4ef6 MCC |
958 | /* Sliced VBI ioctls */ |
959 | static int vidioc_g_fmt_vbi_capture(struct file *file, void *priv, | |
960 | struct v4l2_format *f) | |
a6c2ba28 | 961 | { |
195a4ef6 MCC |
962 | struct em28xx_fh *fh = priv; |
963 | struct em28xx *dev = fh->dev; | |
964 | int rc; | |
a6c2ba28 | 965 | |
195a4ef6 MCC |
966 | rc = check_dev(dev); |
967 | if (rc < 0) | |
968 | return rc; | |
a6c2ba28 | 969 | |
195a4ef6 MCC |
970 | mutex_lock(&dev->lock); |
971 | ||
972 | f->fmt.sliced.service_set = 0; | |
973 | ||
974 | em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f); | |
975 | ||
976 | if (f->fmt.sliced.service_set == 0) | |
977 | rc = -EINVAL; | |
978 | ||
979 | mutex_unlock(&dev->lock); | |
980 | return rc; | |
981 | } | |
982 | ||
983 | static int vidioc_try_set_vbi_capture(struct file *file, void *priv, | |
984 | struct v4l2_format *f) | |
985 | { | |
986 | struct em28xx_fh *fh = priv; | |
987 | struct em28xx *dev = fh->dev; | |
988 | int rc; | |
989 | ||
990 | rc = check_dev(dev); | |
991 | if (rc < 0) | |
992 | return rc; | |
993 | ||
994 | mutex_lock(&dev->lock); | |
995 | em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f); | |
996 | mutex_unlock(&dev->lock); | |
997 | ||
998 | if (f->fmt.sliced.service_set == 0) | |
999 | return -EINVAL; | |
a6c2ba28 AM |
1000 | |
1001 | return 0; | |
1002 | } | |
1003 | ||
195a4ef6 MCC |
1004 | |
1005 | static int vidioc_reqbufs(struct file *file, void *priv, | |
1006 | struct v4l2_requestbuffers *rb) | |
a6c2ba28 | 1007 | { |
195a4ef6 MCC |
1008 | struct em28xx_fh *fh = priv; |
1009 | struct em28xx *dev = fh->dev; | |
1010 | u32 i; | |
1011 | int rc; | |
a6c2ba28 | 1012 | |
195a4ef6 MCC |
1013 | rc = check_dev(dev); |
1014 | if (rc < 0) | |
1015 | return rc; | |
a6c2ba28 | 1016 | |
195a4ef6 MCC |
1017 | if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
1018 | rb->memory != V4L2_MEMORY_MMAP) | |
1019 | return -EINVAL; | |
a6c2ba28 | 1020 | |
195a4ef6 MCC |
1021 | if (dev->io == IO_READ) { |
1022 | em28xx_videodbg("method is set to read;" | |
1023 | " close and open the device again to" | |
1024 | " choose the mmap I/O method\n"); | |
1025 | return -EINVAL; | |
1026 | } | |
a6c2ba28 | 1027 | |
195a4ef6 MCC |
1028 | for (i = 0; i < dev->num_frames; i++) |
1029 | if (dev->frame[i].vma_use_count) { | |
1030 | em28xx_videodbg("VIDIOC_REQBUFS failed; " | |
1031 | "previous buffers are still mapped\n"); | |
1032 | return -EINVAL; | |
1033 | } | |
a6c2ba28 | 1034 | |
195a4ef6 | 1035 | mutex_lock(&dev->lock); |
a6c2ba28 | 1036 | |
195a4ef6 MCC |
1037 | if (dev->stream == STREAM_ON) { |
1038 | em28xx_videodbg("VIDIOC_REQBUFS: interrupting stream\n"); | |
1039 | rc = em28xx_stream_interrupt(dev); | |
1040 | if (rc < 0) { | |
1041 | mutex_unlock(&dev->lock); | |
1042 | return rc; | |
1043 | } | |
1044 | } | |
a6c2ba28 | 1045 | |
195a4ef6 MCC |
1046 | em28xx_empty_framequeues(dev); |
1047 | ||
1048 | em28xx_release_buffers(dev); | |
1049 | if (rb->count) | |
1050 | rb->count = em28xx_request_buffers(dev, rb->count); | |
1051 | ||
1052 | dev->frame_current = NULL; | |
1053 | dev->io = rb->count ? IO_MMAP : IO_NONE; | |
a6c2ba28 | 1054 | |
195a4ef6 | 1055 | mutex_unlock(&dev->lock); |
a6c2ba28 AM |
1056 | return 0; |
1057 | } | |
1058 | ||
195a4ef6 MCC |
1059 | static int vidioc_querybuf(struct file *file, void *priv, |
1060 | struct v4l2_buffer *b) | |
e5589bef | 1061 | { |
195a4ef6 MCC |
1062 | struct em28xx_fh *fh = priv; |
1063 | struct em28xx *dev = fh->dev; | |
1064 | int rc; | |
e5589bef | 1065 | |
195a4ef6 MCC |
1066 | rc = check_dev(dev); |
1067 | if (rc < 0) | |
1068 | return rc; | |
2d50f847 | 1069 | |
195a4ef6 MCC |
1070 | if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
1071 | b->index >= dev->num_frames || dev->io != IO_MMAP) | |
1072 | return -EINVAL; | |
2d50f847 | 1073 | |
195a4ef6 | 1074 | mutex_lock(&dev->lock); |
2d50f847 | 1075 | |
195a4ef6 | 1076 | memcpy(b, &dev->frame[b->index].buf, sizeof(*b)); |
2d50f847 | 1077 | |
195a4ef6 MCC |
1078 | if (dev->frame[b->index].vma_use_count) |
1079 | b->flags |= V4L2_BUF_FLAG_MAPPED; | |
1080 | ||
1081 | if (dev->frame[b->index].state == F_DONE) | |
1082 | b->flags |= V4L2_BUF_FLAG_DONE; | |
1083 | else if (dev->frame[b->index].state != F_UNUSED) | |
1084 | b->flags |= V4L2_BUF_FLAG_QUEUED; | |
1085 | ||
1086 | mutex_unlock(&dev->lock); | |
1087 | return 0; | |
1088 | } | |
1089 | ||
1090 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b) | |
1091 | { | |
1092 | struct em28xx_fh *fh = priv; | |
1093 | struct em28xx *dev = fh->dev; | |
1094 | unsigned long lock_flags; | |
1095 | int rc; | |
1096 | ||
1097 | rc = check_dev(dev); | |
1098 | if (rc < 0) | |
1099 | return rc; | |
1100 | ||
1101 | if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP || | |
1102 | b->index >= dev->num_frames) | |
2d50f847 | 1103 | return -EINVAL; |
195a4ef6 MCC |
1104 | |
1105 | if (dev->frame[b->index].state != F_UNUSED) | |
1106 | return -EAGAIN; | |
1107 | ||
1108 | dev->frame[b->index].state = F_QUEUED; | |
1109 | ||
1110 | /* add frame to fifo */ | |
1111 | spin_lock_irqsave(&dev->queue_lock, lock_flags); | |
1112 | list_add_tail(&dev->frame[b->index].frame, &dev->inqueue); | |
1113 | spin_unlock_irqrestore(&dev->queue_lock, lock_flags); | |
1114 | ||
1115 | return 0; | |
e5589bef MCC |
1116 | } |
1117 | ||
195a4ef6 | 1118 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) |
2d50f847 | 1119 | { |
195a4ef6 MCC |
1120 | struct em28xx_fh *fh = priv; |
1121 | struct em28xx *dev = fh->dev; | |
1122 | int rc; | |
1123 | struct em28xx_frame_t *f; | |
1124 | unsigned long lock_flags; | |
1125 | ||
1126 | rc = check_dev(dev); | |
1127 | if (rc < 0) | |
1128 | return rc; | |
2d50f847 | 1129 | |
195a4ef6 MCC |
1130 | if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP) |
1131 | return -EINVAL; | |
2d50f847 | 1132 | |
195a4ef6 MCC |
1133 | if (list_empty(&dev->outqueue)) { |
1134 | if (dev->stream == STREAM_OFF) | |
1135 | return -EINVAL; | |
2d50f847 | 1136 | |
195a4ef6 MCC |
1137 | if (file->f_flags & O_NONBLOCK) |
1138 | return -EAGAIN; | |
2d50f847 | 1139 | |
195a4ef6 MCC |
1140 | rc = wait_event_interruptible(dev->wait_frame, |
1141 | (!list_empty(&dev->outqueue)) || | |
1142 | (dev->state & DEV_DISCONNECTED)); | |
1143 | if (rc) | |
1144 | return rc; | |
2d50f847 | 1145 | |
195a4ef6 MCC |
1146 | if (dev->state & DEV_DISCONNECTED) |
1147 | return -ENODEV; | |
2d50f847 MCC |
1148 | } |
1149 | ||
195a4ef6 MCC |
1150 | spin_lock_irqsave(&dev->queue_lock, lock_flags); |
1151 | f = list_entry(dev->outqueue.next, struct em28xx_frame_t, frame); | |
1152 | list_del(dev->outqueue.next); | |
1153 | spin_unlock_irqrestore(&dev->queue_lock, lock_flags); | |
2d50f847 | 1154 | |
195a4ef6 MCC |
1155 | f->state = F_UNUSED; |
1156 | memcpy(b, &f->buf, sizeof(*b)); | |
2d50f847 | 1157 | |
195a4ef6 MCC |
1158 | if (f->vma_use_count) |
1159 | b->flags |= V4L2_BUF_FLAG_MAPPED; | |
2d50f847 | 1160 | |
195a4ef6 MCC |
1161 | return 0; |
1162 | } | |
2d50f847 | 1163 | |
195a4ef6 MCC |
1164 | /* |
1165 | * em28xx_v4l2_open() | |
1166 | * inits the device and starts isoc transfer | |
1167 | */ | |
1168 | static int em28xx_v4l2_open(struct inode *inode, struct file *filp) | |
1169 | { | |
1170 | int minor = iminor(inode); | |
1171 | int errCode = 0; | |
1172 | struct em28xx *h,*dev = NULL; | |
1173 | struct em28xx_fh *fh; | |
2d50f847 | 1174 | |
195a4ef6 MCC |
1175 | list_for_each_entry(h, &em28xx_devlist, devlist) { |
1176 | if (h->vdev->minor == minor) { | |
1177 | dev = h; | |
1178 | dev->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1179 | } | |
1180 | if (h->vbi_dev->minor == minor) { | |
1181 | dev = h; | |
1182 | dev->type = V4L2_BUF_TYPE_VBI_CAPTURE; | |
1183 | } | |
2d50f847 | 1184 | } |
195a4ef6 MCC |
1185 | if (NULL == dev) |
1186 | return -ENODEV; | |
2d50f847 | 1187 | |
195a4ef6 MCC |
1188 | em28xx_videodbg("open minor=%d type=%s users=%d\n", |
1189 | minor,v4l2_type_names[dev->type],dev->users); | |
2d50f847 | 1190 | |
195a4ef6 | 1191 | fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL); |
9aeb4b05 | 1192 | |
195a4ef6 MCC |
1193 | if (!fh) { |
1194 | em28xx_errdev("em28xx-video.c: Out of memory?!\n"); | |
1195 | return -ENOMEM; | |
1196 | } | |
1197 | mutex_lock(&dev->lock); | |
1198 | fh->dev = dev; | |
1199 | filp->private_data = fh; | |
9aeb4b05 | 1200 | |
195a4ef6 MCC |
1201 | if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) { |
1202 | em28xx_set_alternate(dev); | |
2d50f847 | 1203 | |
195a4ef6 MCC |
1204 | dev->width = norm_maxw(dev); |
1205 | dev->height = norm_maxh(dev); | |
1206 | dev->frame_size = dev->width * dev->height * 2; | |
1207 | dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */ | |
1208 | dev->bytesperline = dev->width * 2; | |
1209 | dev->hscale = 0; | |
1210 | dev->vscale = 0; | |
2d50f847 | 1211 | |
195a4ef6 MCC |
1212 | em28xx_capture_start(dev, 1); |
1213 | em28xx_resolution_set(dev); | |
2d50f847 | 1214 | |
2d50f847 | 1215 | |
195a4ef6 MCC |
1216 | /* start the transfer */ |
1217 | errCode = em28xx_init_isoc(dev); | |
1218 | if (errCode) | |
1219 | goto err; | |
2d50f847 | 1220 | |
195a4ef6 | 1221 | em28xx_empty_framequeues(dev); |
2d50f847 MCC |
1222 | } |
1223 | ||
195a4ef6 | 1224 | dev->users++; |
2d50f847 | 1225 | |
195a4ef6 MCC |
1226 | err: |
1227 | mutex_unlock(&dev->lock); | |
1228 | return errCode; | |
2d50f847 | 1229 | } |
e5589bef | 1230 | |
a6c2ba28 | 1231 | /* |
195a4ef6 MCC |
1232 | * em28xx_realease_resources() |
1233 | * unregisters the v4l2,i2c and usb devices | |
1234 | * called when the device gets disconected or at module unload | |
1235 | */ | |
1236 | static void em28xx_release_resources(struct em28xx *dev) | |
a6c2ba28 | 1237 | { |
a6c2ba28 | 1238 | |
195a4ef6 | 1239 | /*FIXME: I2C IR should be disconnected */ |
a6c2ba28 | 1240 | |
195a4ef6 MCC |
1241 | em28xx_info("V4L2 devices /dev/video%d and /dev/vbi%d deregistered\n", |
1242 | dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN, | |
1243 | dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN); | |
1244 | list_del(&dev->devlist); | |
1245 | video_unregister_device(dev->vdev); | |
1246 | video_unregister_device(dev->vbi_dev); | |
1247 | em28xx_i2c_unregister(dev); | |
1248 | usb_put_dev(dev->udev); | |
a6c2ba28 | 1249 | |
a6c2ba28 | 1250 | |
195a4ef6 MCC |
1251 | /* Mark device as unused */ |
1252 | em28xx_devused&=~(1<<dev->devno); | |
1253 | } | |
a6c2ba28 | 1254 | |
195a4ef6 MCC |
1255 | /* |
1256 | * em28xx_v4l2_close() | |
1257 | * stops streaming and deallocates all resources allocated by the v4l2 calls and ioctls | |
1258 | */ | |
1259 | static int em28xx_v4l2_close(struct inode *inode, struct file *filp) | |
1260 | { | |
1261 | struct em28xx_fh *fh = filp->private_data; | |
1262 | struct em28xx *dev = fh->dev; | |
1263 | int errCode; | |
a6c2ba28 | 1264 | |
195a4ef6 | 1265 | em28xx_videodbg("users=%d\n", dev->users); |
a6c2ba28 | 1266 | |
a6c2ba28 | 1267 | |
195a4ef6 MCC |
1268 | if (res_check(fh)) |
1269 | res_free(fh); | |
a6c2ba28 | 1270 | |
195a4ef6 | 1271 | mutex_lock(&dev->lock); |
a6c2ba28 | 1272 | |
195a4ef6 MCC |
1273 | if (dev->users == 1) { |
1274 | em28xx_uninit_isoc(dev); | |
1275 | em28xx_release_buffers(dev); | |
1276 | dev->io = IO_NONE; | |
a6c2ba28 | 1277 | |
195a4ef6 MCC |
1278 | /* the device is already disconnect, |
1279 | free the remaining resources */ | |
1280 | if (dev->state & DEV_DISCONNECTED) { | |
1281 | em28xx_release_resources(dev); | |
1282 | mutex_unlock(&dev->lock); | |
1283 | kfree(dev); | |
1284 | return 0; | |
1285 | } | |
a6c2ba28 | 1286 | |
195a4ef6 MCC |
1287 | /* set alternate 0 */ |
1288 | dev->alt = 0; | |
1289 | em28xx_videodbg("setting alternate 0\n"); | |
1290 | errCode = usb_set_interface(dev->udev, 0, 0); | |
1291 | if (errCode < 0) { | |
1292 | em28xx_errdev("cannot change alternate number to " | |
1293 | "0 (error=%i)\n", errCode); | |
1294 | } | |
9aeb4b05 | 1295 | } |
195a4ef6 MCC |
1296 | kfree(fh); |
1297 | dev->users--; | |
1298 | wake_up_interruptible_nr(&dev->open, 1); | |
1299 | mutex_unlock(&dev->lock); | |
1300 | return 0; | |
1301 | } | |
a6c2ba28 | 1302 | |
195a4ef6 MCC |
1303 | /* |
1304 | * em28xx_v4l2_read() | |
1305 | * will allocate buffers when called for the first time | |
1306 | */ | |
1307 | static ssize_t | |
1308 | em28xx_v4l2_read(struct file *filp, char __user * buf, size_t count, | |
1309 | loff_t * f_pos) | |
1310 | { | |
1311 | struct em28xx_frame_t *f, *i; | |
1312 | unsigned long lock_flags; | |
1313 | int ret = 0; | |
1314 | struct em28xx_fh *fh = filp->private_data; | |
1315 | struct em28xx *dev = fh->dev; | |
a6c2ba28 | 1316 | |
195a4ef6 MCC |
1317 | /* FIXME: read() is not prepared to allow changing the video |
1318 | resolution while streaming. Seems a bug at em28xx_set_fmt | |
1319 | */ | |
a6c2ba28 | 1320 | |
195a4ef6 MCC |
1321 | if (unlikely(res_get(fh) < 0)) |
1322 | return -EBUSY; | |
9aeb4b05 | 1323 | |
195a4ef6 | 1324 | mutex_lock(&dev->lock); |
a6c2ba28 | 1325 | |
195a4ef6 MCC |
1326 | if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1327 | em28xx_videodbg("V4l2_Buf_type_videocapture is set\n"); | |
1328 | ||
1329 | if (dev->type == V4L2_BUF_TYPE_VBI_CAPTURE) { | |
1330 | em28xx_videodbg("V4L2_BUF_TYPE_VBI_CAPTURE is set\n"); | |
1331 | em28xx_videodbg("not supported yet! ...\n"); | |
1332 | if (copy_to_user(buf, "", 1)) { | |
1333 | mutex_unlock(&dev->lock); | |
1334 | return -EFAULT; | |
9aeb4b05 | 1335 | } |
5a80415b | 1336 | mutex_unlock(&dev->lock); |
195a4ef6 | 1337 | return (1); |
9aeb4b05 | 1338 | } |
195a4ef6 MCC |
1339 | if (dev->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) { |
1340 | em28xx_videodbg("V4L2_BUF_TYPE_SLICED_VBI_CAPTURE is set\n"); | |
1341 | em28xx_videodbg("not supported yet! ...\n"); | |
1342 | if (copy_to_user(buf, "", 1)) { | |
5a80415b | 1343 | mutex_unlock(&dev->lock); |
195a4ef6 | 1344 | return -EFAULT; |
9aeb4b05 | 1345 | } |
5a80415b | 1346 | mutex_unlock(&dev->lock); |
195a4ef6 | 1347 | return (1); |
9aeb4b05 | 1348 | } |
a6c2ba28 | 1349 | |
195a4ef6 MCC |
1350 | if (dev->state & DEV_DISCONNECTED) { |
1351 | em28xx_videodbg("device not present\n"); | |
1352 | mutex_unlock(&dev->lock); | |
1353 | return -ENODEV; | |
1354 | } | |
a6c2ba28 | 1355 | |
195a4ef6 MCC |
1356 | if (dev->state & DEV_MISCONFIGURED) { |
1357 | em28xx_videodbg("device misconfigured; close and open it again\n"); | |
3593cab5 | 1358 | mutex_unlock(&dev->lock); |
195a4ef6 | 1359 | return -EIO; |
9aeb4b05 | 1360 | } |
a6c2ba28 | 1361 | |
195a4ef6 MCC |
1362 | if (dev->io == IO_MMAP) { |
1363 | em28xx_videodbg ("IO method is set to mmap; close and open" | |
1364 | " the device again to choose the read method\n"); | |
3593cab5 | 1365 | mutex_unlock(&dev->lock); |
195a4ef6 | 1366 | return -EINVAL; |
9aeb4b05 | 1367 | } |
a6c2ba28 | 1368 | |
195a4ef6 MCC |
1369 | if (dev->io == IO_NONE) { |
1370 | if (!em28xx_request_buffers(dev, EM28XX_NUM_READ_FRAMES)) { | |
1371 | em28xx_errdev("read failed, not enough memory\n"); | |
1372 | mutex_unlock(&dev->lock); | |
1373 | return -ENOMEM; | |
1374 | } | |
1375 | dev->io = IO_READ; | |
1376 | dev->stream = STREAM_ON; | |
1377 | em28xx_queue_unusedframes(dev); | |
9aeb4b05 | 1378 | } |
a6c2ba28 | 1379 | |
195a4ef6 | 1380 | if (!count) { |
3593cab5 | 1381 | mutex_unlock(&dev->lock); |
9aeb4b05 MCC |
1382 | return 0; |
1383 | } | |
a6c2ba28 | 1384 | |
195a4ef6 MCC |
1385 | if (list_empty(&dev->outqueue)) { |
1386 | if (filp->f_flags & O_NONBLOCK) { | |
1387 | mutex_unlock(&dev->lock); | |
1388 | return -EAGAIN; | |
1389 | } | |
1390 | ret = wait_event_interruptible | |
1391 | (dev->wait_frame, | |
1392 | (!list_empty(&dev->outqueue)) || | |
1393 | (dev->state & DEV_DISCONNECTED)); | |
1394 | if (ret) { | |
1395 | mutex_unlock(&dev->lock); | |
1396 | return ret; | |
1397 | } | |
1398 | if (dev->state & DEV_DISCONNECTED) { | |
1399 | mutex_unlock(&dev->lock); | |
1400 | return -ENODEV; | |
1401 | } | |
1402 | dev->video_bytesread = 0; | |
9aeb4b05 | 1403 | } |
a6c2ba28 | 1404 | |
195a4ef6 | 1405 | f = list_entry(dev->outqueue.prev, struct em28xx_frame_t, frame); |
a6c2ba28 | 1406 | |
195a4ef6 | 1407 | em28xx_queue_unusedframes(dev); |
a225452e | 1408 | |
195a4ef6 MCC |
1409 | if (count > f->buf.length) |
1410 | count = f->buf.length; | |
a6c2ba28 | 1411 | |
195a4ef6 MCC |
1412 | if ((dev->video_bytesread + count) > dev->frame_size) |
1413 | count = dev->frame_size - dev->video_bytesread; | |
a6c2ba28 | 1414 | |
195a4ef6 MCC |
1415 | if (copy_to_user(buf, f->bufmem+dev->video_bytesread, count)) { |
1416 | em28xx_err("Error while copying to user\n"); | |
1417 | return -EFAULT; | |
9aeb4b05 | 1418 | } |
195a4ef6 | 1419 | dev->video_bytesread += count; |
a6c2ba28 | 1420 | |
195a4ef6 MCC |
1421 | if (dev->video_bytesread == dev->frame_size) { |
1422 | spin_lock_irqsave(&dev->queue_lock, lock_flags); | |
1423 | list_for_each_entry(i, &dev->outqueue, frame) | |
1424 | i->state = F_UNUSED; | |
1425 | INIT_LIST_HEAD(&dev->outqueue); | |
1426 | spin_unlock_irqrestore(&dev->queue_lock, lock_flags); | |
a6c2ba28 | 1427 | |
195a4ef6 MCC |
1428 | em28xx_queue_unusedframes(dev); |
1429 | dev->video_bytesread = 0; | |
1430 | } | |
a3a048ce | 1431 | |
195a4ef6 | 1432 | *f_pos += count; |
9aeb4b05 | 1433 | |
195a4ef6 MCC |
1434 | mutex_unlock(&dev->lock); |
1435 | ||
1436 | return count; | |
a6c2ba28 AM |
1437 | } |
1438 | ||
1439 | /* | |
195a4ef6 MCC |
1440 | * em28xx_v4l2_poll() |
1441 | * will allocate buffers when called for the first time | |
a6c2ba28 | 1442 | */ |
195a4ef6 | 1443 | static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table * wait) |
a6c2ba28 | 1444 | { |
195a4ef6 | 1445 | unsigned int mask = 0; |
a3a048ce | 1446 | struct em28xx_fh *fh = filp->private_data; |
195a4ef6 | 1447 | struct em28xx *dev = fh->dev; |
a6c2ba28 | 1448 | |
195a4ef6 MCC |
1449 | if (unlikely(res_get(fh) < 0)) |
1450 | return POLLERR; | |
a6c2ba28 | 1451 | |
195a4ef6 | 1452 | mutex_lock(&dev->lock); |
a6c2ba28 | 1453 | |
195a4ef6 MCC |
1454 | if (dev->state & DEV_DISCONNECTED) { |
1455 | em28xx_videodbg("device not present\n"); | |
1456 | } else if (dev->state & DEV_MISCONFIGURED) { | |
1457 | em28xx_videodbg("device is misconfigured; close and open it again\n"); | |
1458 | } else { | |
1459 | if (dev->io == IO_NONE) { | |
1460 | if (!em28xx_request_buffers | |
1461 | (dev, EM28XX_NUM_READ_FRAMES)) { | |
1462 | em28xx_warn | |
1463 | ("poll() failed, not enough memory\n"); | |
1464 | } else { | |
1465 | dev->io = IO_READ; | |
1466 | dev->stream = STREAM_ON; | |
1467 | } | |
1468 | } | |
a6c2ba28 | 1469 | |
195a4ef6 MCC |
1470 | if (dev->io == IO_READ) { |
1471 | em28xx_queue_unusedframes(dev); | |
1472 | poll_wait(filp, &dev->wait_frame, wait); | |
a6c2ba28 | 1473 | |
195a4ef6 MCC |
1474 | if (!list_empty(&dev->outqueue)) |
1475 | mask |= POLLIN | POLLRDNORM; | |
a6c2ba28 | 1476 | |
195a4ef6 | 1477 | mutex_unlock(&dev->lock); |
a6c2ba28 | 1478 | |
195a4ef6 | 1479 | return mask; |
9aeb4b05 | 1480 | } |
195a4ef6 | 1481 | } |
a6c2ba28 | 1482 | |
195a4ef6 MCC |
1483 | mutex_unlock(&dev->lock); |
1484 | return POLLERR; | |
1485 | } | |
a6c2ba28 | 1486 | |
195a4ef6 MCC |
1487 | /* |
1488 | * em28xx_v4l2_mmap() | |
1489 | */ | |
1490 | static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma) | |
1491 | { | |
1492 | struct em28xx_fh *fh = filp->private_data; | |
1493 | struct em28xx *dev = fh->dev; | |
1494 | unsigned long size = vma->vm_end - vma->vm_start; | |
1495 | unsigned long start = vma->vm_start; | |
1496 | void *pos; | |
1497 | u32 i; | |
a6c2ba28 | 1498 | |
195a4ef6 MCC |
1499 | if (unlikely(res_get(fh) < 0)) |
1500 | return -EBUSY; | |
a6c2ba28 | 1501 | |
195a4ef6 | 1502 | mutex_lock(&dev->lock); |
a6c2ba28 | 1503 | |
195a4ef6 MCC |
1504 | if (dev->state & DEV_DISCONNECTED) { |
1505 | em28xx_videodbg("mmap: device not present\n"); | |
5a80415b | 1506 | mutex_unlock(&dev->lock); |
195a4ef6 | 1507 | return -ENODEV; |
9aeb4b05 | 1508 | } |
a6c2ba28 | 1509 | |
195a4ef6 MCC |
1510 | if (dev->state & DEV_MISCONFIGURED) { |
1511 | em28xx_videodbg ("mmap: Device is misconfigured; close and " | |
1512 | "open it again\n"); | |
1513 | mutex_unlock(&dev->lock); | |
1514 | return -EIO; | |
9aeb4b05 | 1515 | } |
a6c2ba28 | 1516 | |
195a4ef6 MCC |
1517 | if (dev->io != IO_MMAP || !(vma->vm_flags & VM_WRITE)) { |
1518 | mutex_unlock(&dev->lock); | |
1519 | return -EINVAL; | |
9aeb4b05 | 1520 | } |
a6c2ba28 | 1521 | |
195a4ef6 MCC |
1522 | if (size > PAGE_ALIGN(dev->frame[0].buf.length)) |
1523 | size = PAGE_ALIGN(dev->frame[0].buf.length); | |
a6c2ba28 | 1524 | |
195a4ef6 MCC |
1525 | for (i = 0; i < dev->num_frames; i++) { |
1526 | if ((dev->frame[i].buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff) | |
1527 | break; | |
9aeb4b05 | 1528 | } |
195a4ef6 MCC |
1529 | if (i == dev->num_frames) { |
1530 | em28xx_videodbg("mmap: user supplied mapping address is out of range\n"); | |
1531 | mutex_unlock(&dev->lock); | |
1532 | return -EINVAL; | |
a6c2ba28 | 1533 | } |
a6c2ba28 | 1534 | |
195a4ef6 MCC |
1535 | /* VM_IO is eventually going to replace PageReserved altogether */ |
1536 | vma->vm_flags |= VM_IO; | |
1537 | vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */ | |
a6c2ba28 | 1538 | |
195a4ef6 MCC |
1539 | pos = dev->frame[i].bufmem; |
1540 | while (size > 0) { /* size is page-aligned */ | |
1541 | if (vm_insert_page(vma, start, vmalloc_to_page(pos))) { | |
1542 | em28xx_videodbg("mmap: vm_insert_page failed\n"); | |
1543 | mutex_unlock(&dev->lock); | |
1544 | return -EAGAIN; | |
1545 | } | |
1546 | start += PAGE_SIZE; | |
1547 | pos += PAGE_SIZE; | |
1548 | size -= PAGE_SIZE; | |
a6c2ba28 AM |
1549 | } |
1550 | ||
195a4ef6 MCC |
1551 | vma->vm_ops = &em28xx_vm_ops; |
1552 | vma->vm_private_data = &dev->frame[i]; | |
a6c2ba28 | 1553 | |
195a4ef6 MCC |
1554 | em28xx_vm_open(vma); |
1555 | mutex_unlock(&dev->lock); | |
1556 | return 0; | |
a6c2ba28 AM |
1557 | } |
1558 | ||
fa027c2a | 1559 | static const struct file_operations em28xx_v4l_fops = { |
195a4ef6 MCC |
1560 | .owner = THIS_MODULE, |
1561 | .open = em28xx_v4l2_open, | |
1562 | .release = em28xx_v4l2_close, | |
1563 | .read = em28xx_v4l2_read, | |
1564 | .poll = em28xx_v4l2_poll, | |
1565 | .mmap = em28xx_v4l2_mmap, | |
1566 | .ioctl = video_ioctl2, | |
1567 | .llseek = no_llseek, | |
1568 | .compat_ioctl = v4l_compat_ioctl32, | |
1569 | }; | |
17cbe2e5 | 1570 | |
195a4ef6 MCC |
1571 | static const struct video_device em28xx_video_template = { |
1572 | .fops = &em28xx_v4l_fops, | |
1573 | .release = video_device_release, | |
1574 | ||
1575 | .minor = -1, | |
1576 | .vidioc_querycap = vidioc_querycap, | |
1577 | .vidioc_enum_fmt_cap = vidioc_enum_fmt_cap, | |
1578 | .vidioc_g_fmt_cap = vidioc_g_fmt_cap, | |
1579 | .vidioc_try_fmt_cap = vidioc_try_fmt_cap, | |
1580 | .vidioc_s_fmt_cap = vidioc_s_fmt_cap, | |
1581 | .vidioc_g_audio = vidioc_g_audio, | |
1582 | .vidioc_s_audio = vidioc_s_audio, | |
1583 | .vidioc_cropcap = vidioc_cropcap, | |
1584 | ||
1585 | .vidioc_g_fmt_vbi_capture = vidioc_g_fmt_vbi_capture, | |
1586 | .vidioc_try_fmt_vbi_capture = vidioc_try_set_vbi_capture, | |
1587 | .vidioc_s_fmt_vbi_capture = vidioc_try_set_vbi_capture, | |
1588 | ||
1589 | .vidioc_reqbufs = vidioc_reqbufs, | |
1590 | .vidioc_querybuf = vidioc_querybuf, | |
1591 | .vidioc_qbuf = vidioc_qbuf, | |
1592 | .vidioc_dqbuf = vidioc_dqbuf, | |
1593 | .vidioc_s_std = vidioc_s_std, | |
1594 | .vidioc_enum_input = vidioc_enum_input, | |
1595 | .vidioc_g_input = vidioc_g_input, | |
1596 | .vidioc_s_input = vidioc_s_input, | |
1597 | .vidioc_queryctrl = vidioc_queryctrl, | |
1598 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
1599 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
1600 | .vidioc_streamon = vidioc_streamon, | |
1601 | .vidioc_streamoff = vidioc_streamoff, | |
1602 | .vidioc_g_tuner = vidioc_g_tuner, | |
1603 | .vidioc_s_tuner = vidioc_s_tuner, | |
1604 | .vidioc_g_frequency = vidioc_g_frequency, | |
1605 | .vidioc_s_frequency = vidioc_s_frequency, | |
1606 | ||
1607 | .tvnorms = V4L2_STD_ALL, | |
7d497f8a | 1608 | .current_norm = V4L2_STD_PAL, |
a6c2ba28 AM |
1609 | }; |
1610 | ||
195a4ef6 | 1611 | |
a6c2ba28 AM |
1612 | /******************************** usb interface *****************************************/ |
1613 | ||
1614 | /* | |
3acf2809 | 1615 | * em28xx_init_dev() |
a6c2ba28 AM |
1616 | * allocates and inits the device structs, registers i2c bus and v4l device |
1617 | */ | |
3acf2809 | 1618 | static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev, |
03910cc3 | 1619 | int minor) |
a6c2ba28 | 1620 | { |
3acf2809 | 1621 | struct em28xx *dev = *devhandle; |
a6c2ba28 | 1622 | int retval = -ENOMEM; |
7d497f8a | 1623 | int errCode; |
a6c2ba28 | 1624 | unsigned int maxh, maxw; |
a6c2ba28 | 1625 | |
a6c2ba28 | 1626 | dev->udev = udev; |
3593cab5 | 1627 | mutex_init(&dev->lock); |
a3a048ce | 1628 | spin_lock_init(&dev->queue_lock); |
a6c2ba28 | 1629 | init_waitqueue_head(&dev->open); |
a3a048ce MCC |
1630 | init_waitqueue_head(&dev->wait_frame); |
1631 | init_waitqueue_head(&dev->wait_stream); | |
a6c2ba28 | 1632 | |
3acf2809 MCC |
1633 | dev->em28xx_write_regs = em28xx_write_regs; |
1634 | dev->em28xx_read_reg = em28xx_read_reg; | |
1635 | dev->em28xx_read_reg_req_len = em28xx_read_reg_req_len; | |
1636 | dev->em28xx_write_regs_req = em28xx_write_regs_req; | |
1637 | dev->em28xx_read_reg_req = em28xx_read_reg_req; | |
fad7b958 | 1638 | dev->is_em2800 = em28xx_boards[dev->model].is_em2800; |
a6c2ba28 | 1639 | |
a94e95b4 | 1640 | em28xx_pre_card_setup(dev); |
03910cc3 | 1641 | |
3acf2809 | 1642 | errCode = em28xx_config(dev); |
a6c2ba28 | 1643 | if (errCode) { |
3acf2809 | 1644 | em28xx_errdev("error configuring device\n"); |
03910cc3 | 1645 | em28xx_devused &= ~(1<<dev->devno); |
7c908fbb | 1646 | kfree(dev); |
a6c2ba28 AM |
1647 | return -ENOMEM; |
1648 | } | |
1649 | ||
a6c2ba28 | 1650 | /* register i2c bus */ |
3acf2809 | 1651 | em28xx_i2c_register(dev); |
a6c2ba28 AM |
1652 | |
1653 | /* Do board specific init and eeprom reading */ | |
3acf2809 | 1654 | em28xx_card_setup(dev); |
a6c2ba28 AM |
1655 | |
1656 | /* configure the device */ | |
3acf2809 | 1657 | em28xx_config_i2c(dev); |
a6c2ba28 | 1658 | |
7d497f8a MCC |
1659 | /* set default norm */ |
1660 | dev->norm = em28xx_video_template.current_norm; | |
03910cc3 MCC |
1661 | |
1662 | maxw = norm_maxw(dev); | |
1663 | maxh = norm_maxh(dev); | |
1664 | ||
1665 | /* set default image size */ | |
1666 | dev->width = maxw; | |
1667 | dev->height = maxh; | |
1668 | dev->interlaced = EM28XX_INTERLACED_DEFAULT; | |
1669 | dev->field_size = dev->width * dev->height; | |
1670 | dev->frame_size = | |
1671 | dev->interlaced ? dev->field_size << 1 : dev->field_size; | |
1672 | dev->bytesperline = dev->width * 2; | |
1673 | dev->hscale = 0; | |
1674 | dev->vscale = 0; | |
1675 | dev->ctl_input = 2; | |
1676 | ||
3acf2809 | 1677 | errCode = em28xx_config(dev); |
a6c2ba28 | 1678 | |
195a4ef6 | 1679 | /* allocate and fill video video_device struct */ |
a6c2ba28 AM |
1680 | dev->vdev = video_device_alloc(); |
1681 | if (NULL == dev->vdev) { | |
3acf2809 | 1682 | em28xx_errdev("cannot allocate video_device.\n"); |
e5589bef | 1683 | em28xx_devused&=~(1<<dev->devno); |
7c908fbb | 1684 | kfree(dev); |
e5589bef MCC |
1685 | return -ENOMEM; |
1686 | } | |
195a4ef6 MCC |
1687 | memcpy(dev->vdev, &em28xx_video_template, |
1688 | sizeof(em28xx_video_template)); | |
1689 | dev->vdev->type = VID_TYPE_CAPTURE; | |
1690 | if (dev->has_tuner) | |
1691 | dev->vdev->type |= VID_TYPE_TUNER; | |
1692 | dev->vdev->dev = &dev->udev->dev; | |
1693 | snprintf(dev->vdev->name, sizeof(dev->vbi_dev->name), | |
1694 | "%s#%d %s", "em28xx", dev->devno, "video"); | |
e5589bef | 1695 | |
195a4ef6 | 1696 | /* Allocate and fill vbi video_device struct */ |
e5589bef MCC |
1697 | dev->vbi_dev = video_device_alloc(); |
1698 | if (NULL == dev->vbi_dev) { | |
1699 | em28xx_errdev("cannot allocate video_device.\n"); | |
1700 | kfree(dev->vdev); | |
e5589bef | 1701 | em28xx_devused&=~(1<<dev->devno); |
7c908fbb | 1702 | kfree(dev); |
a6c2ba28 AM |
1703 | return -ENOMEM; |
1704 | } | |
195a4ef6 MCC |
1705 | memcpy(dev->vbi_dev, &em28xx_video_template, |
1706 | sizeof(em28xx_video_template)); | |
e5589bef | 1707 | dev->vbi_dev->type = VFL_TYPE_VBI; |
e5589bef | 1708 | dev->vbi_dev->dev = &dev->udev->dev; |
195a4ef6 MCC |
1709 | snprintf(dev->vbi_dev->name, sizeof(dev->vbi_dev->name), |
1710 | "%s#%d %s", "em28xx", dev->devno, "vbi"); | |
e5589bef | 1711 | |
3acf2809 | 1712 | list_add_tail(&dev->devlist,&em28xx_devlist); |
a6c2ba28 | 1713 | |
5a80415b SS |
1714 | if (dev->has_msp34xx) { |
1715 | /* Send a reset to other chips via gpio */ | |
1716 | em28xx_write_regs_req(dev, 0x00, 0x08, "\xf7", 1); | |
1717 | msleep(3); | |
1718 | em28xx_write_regs_req(dev, 0x00, 0x08, "\xff", 1); | |
1719 | msleep(3); | |
5a80415b | 1720 | } |
195a4ef6 | 1721 | |
5a80415b SS |
1722 | video_mux(dev, 0); |
1723 | ||
195a4ef6 | 1724 | /* register v4l2 video video_device */ |
e5589bef MCC |
1725 | if ((retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER, |
1726 | video_nr[dev->devno]))) { | |
3acf2809 | 1727 | em28xx_errdev("unable to register video device (error=%i).\n", |
a6c2ba28 | 1728 | retval); |
3593cab5 | 1729 | mutex_unlock(&dev->lock); |
9c75541f | 1730 | list_del(&dev->devlist); |
a6c2ba28 | 1731 | video_device_release(dev->vdev); |
e5589bef | 1732 | em28xx_devused&=~(1<<dev->devno); |
7c908fbb | 1733 | kfree(dev); |
a6c2ba28 AM |
1734 | return -ENODEV; |
1735 | } | |
e5589bef | 1736 | |
195a4ef6 | 1737 | /* register v4l2 vbi video_device */ |
e5589bef MCC |
1738 | if (video_register_device(dev->vbi_dev, VFL_TYPE_VBI, |
1739 | vbi_nr[dev->devno]) < 0) { | |
1740 | printk("unable to register vbi device\n"); | |
3593cab5 | 1741 | mutex_unlock(&dev->lock); |
e5589bef MCC |
1742 | list_del(&dev->devlist); |
1743 | video_device_release(dev->vbi_dev); | |
1744 | video_device_release(dev->vdev); | |
e5589bef | 1745 | em28xx_devused&=~(1<<dev->devno); |
7c908fbb | 1746 | kfree(dev); |
e5589bef | 1747 | return -ENODEV; |
e5589bef MCC |
1748 | } |
1749 | ||
e5589bef MCC |
1750 | em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n", |
1751 | dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN, | |
1752 | dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN); | |
a6c2ba28 | 1753 | |
a6c2ba28 AM |
1754 | return 0; |
1755 | } | |
1756 | ||
1757 | /* | |
3acf2809 | 1758 | * em28xx_usb_probe() |
a6c2ba28 AM |
1759 | * checks for supported devices |
1760 | */ | |
3acf2809 | 1761 | static int em28xx_usb_probe(struct usb_interface *interface, |
a6c2ba28 AM |
1762 | const struct usb_device_id *id) |
1763 | { | |
1764 | const struct usb_endpoint_descriptor *endpoint; | |
1765 | struct usb_device *udev; | |
9d4d9c05 | 1766 | struct usb_interface *uif; |
3acf2809 | 1767 | struct em28xx *dev = NULL; |
a6c2ba28 | 1768 | int retval = -ENODEV; |
03910cc3 | 1769 | int i, nr, ifnum; |
a6c2ba28 AM |
1770 | |
1771 | udev = usb_get_dev(interface_to_usbdev(interface)); | |
d5e52653 MCC |
1772 | ifnum = interface->altsetting[0].desc.bInterfaceNumber; |
1773 | ||
e5589bef MCC |
1774 | /* Check to see next free device and mark as used */ |
1775 | nr=find_first_zero_bit(&em28xx_devused,EM28XX_MAXBOARDS); | |
1776 | em28xx_devused|=1<<nr; | |
a6c2ba28 | 1777 | |
596d92d5 | 1778 | /* Don't register audio interfaces */ |
91cad0f2 | 1779 | if (interface->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) { |
3acf2809 | 1780 | em28xx_err(DRIVER_NAME " audio device (%04x:%04x): interface %i, class %i\n", |
91cad0f2 MCC |
1781 | udev->descriptor.idVendor,udev->descriptor.idProduct, |
1782 | ifnum, | |
1783 | interface->altsetting[0].desc.bInterfaceClass); | |
e5589bef MCC |
1784 | |
1785 | em28xx_devused&=~(1<<nr); | |
596d92d5 | 1786 | return -ENODEV; |
91cad0f2 MCC |
1787 | } |
1788 | ||
3acf2809 | 1789 | em28xx_err(DRIVER_NAME " new video device (%04x:%04x): interface %i, class %i\n", |
91cad0f2 MCC |
1790 | udev->descriptor.idVendor,udev->descriptor.idProduct, |
1791 | ifnum, | |
1792 | interface->altsetting[0].desc.bInterfaceClass); | |
596d92d5 | 1793 | |
d5e52653 MCC |
1794 | endpoint = &interface->cur_altsetting->endpoint[1].desc; |
1795 | ||
59c51591 | 1796 | /* check if the device has the iso in endpoint at the correct place */ |
a6c2ba28 AM |
1797 | if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != |
1798 | USB_ENDPOINT_XFER_ISOC) { | |
3acf2809 | 1799 | em28xx_err(DRIVER_NAME " probing error: endpoint is non-ISO endpoint!\n"); |
e5589bef | 1800 | em28xx_devused&=~(1<<nr); |
a6c2ba28 AM |
1801 | return -ENODEV; |
1802 | } | |
1803 | if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) { | |
3acf2809 | 1804 | em28xx_err(DRIVER_NAME " probing error: endpoint is ISO OUT endpoint!\n"); |
e5589bef | 1805 | em28xx_devused&=~(1<<nr); |
a6c2ba28 AM |
1806 | return -ENODEV; |
1807 | } | |
1808 | ||
19478843 | 1809 | if (nr >= EM28XX_MAXBOARDS) { |
9d4d9c05 | 1810 | printk (DRIVER_NAME ": Supports only %i em28xx boards.\n",EM28XX_MAXBOARDS); |
e5589bef | 1811 | em28xx_devused&=~(1<<nr); |
596d92d5 MCC |
1812 | return -ENOMEM; |
1813 | } | |
1814 | ||
1815 | /* allocate memory for our device state and initialize it */ | |
7408187d | 1816 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
596d92d5 | 1817 | if (dev == NULL) { |
3acf2809 | 1818 | em28xx_err(DRIVER_NAME ": out of memory!\n"); |
e5589bef | 1819 | em28xx_devused&=~(1<<nr); |
596d92d5 MCC |
1820 | return -ENOMEM; |
1821 | } | |
596d92d5 | 1822 | |
e5589bef | 1823 | snprintf(dev->name, 29, "em28xx #%d", nr); |
03910cc3 MCC |
1824 | dev->devno = nr; |
1825 | dev->model = id->driver_info; | |
e5589bef | 1826 | |
9d4d9c05 MCC |
1827 | /* compute alternate max packet sizes */ |
1828 | uif = udev->actconfig->interface[0]; | |
1829 | ||
1830 | dev->num_alt=uif->num_altsetting; | |
e5589bef | 1831 | em28xx_info("Alternate settings: %i\n",dev->num_alt); |
9d4d9c05 MCC |
1832 | // dev->alt_max_pkt_size = kmalloc(sizeof(*dev->alt_max_pkt_size)* |
1833 | dev->alt_max_pkt_size = kmalloc(32* | |
1834 | dev->num_alt,GFP_KERNEL); | |
1835 | if (dev->alt_max_pkt_size == NULL) { | |
e5589bef MCC |
1836 | em28xx_errdev("out of memory!\n"); |
1837 | em28xx_devused&=~(1<<nr); | |
1207cf84 | 1838 | kfree(dev); |
9d4d9c05 MCC |
1839 | return -ENOMEM; |
1840 | } | |
1841 | ||
1842 | for (i = 0; i < dev->num_alt ; i++) { | |
1843 | u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc. | |
1844 | wMaxPacketSize); | |
1845 | dev->alt_max_pkt_size[i] = | |
1846 | (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1); | |
e5589bef | 1847 | em28xx_info("Alternate setting %i, max size= %i\n",i, |
9d4d9c05 MCC |
1848 | dev->alt_max_pkt_size[i]); |
1849 | } | |
1850 | ||
3acf2809 | 1851 | if ((card[nr]>=0)&&(card[nr]<em28xx_bcount)) |
03910cc3 | 1852 | dev->model = card[nr]; |
596d92d5 | 1853 | |
a6c2ba28 | 1854 | /* allocate device struct */ |
03910cc3 | 1855 | retval = em28xx_init_dev(&dev, udev, nr); |
a6c2ba28 AM |
1856 | if (retval) |
1857 | return retval; | |
1858 | ||
03910cc3 | 1859 | em28xx_info("Found %s\n", em28xx_boards[dev->model].name); |
a6c2ba28 AM |
1860 | |
1861 | /* save our data pointer in this interface device */ | |
1862 | usb_set_intfdata(interface, dev); | |
1863 | return 0; | |
1864 | } | |
1865 | ||
1866 | /* | |
3acf2809 | 1867 | * em28xx_usb_disconnect() |
a6c2ba28 AM |
1868 | * called when the device gets diconencted |
1869 | * video device will be unregistered on v4l2_close in case it is still open | |
1870 | */ | |
3acf2809 | 1871 | static void em28xx_usb_disconnect(struct usb_interface *interface) |
a6c2ba28 | 1872 | { |
5a80415b SS |
1873 | struct em28xx *dev; |
1874 | ||
1875 | dev = usb_get_intfdata(interface); | |
a6c2ba28 AM |
1876 | usb_set_intfdata(interface, NULL); |
1877 | ||
1878 | if (!dev) | |
1879 | return; | |
1880 | ||
5a80415b | 1881 | em28xx_info("disconnecting %s\n", dev->vdev->name); |
a6c2ba28 | 1882 | |
5a80415b | 1883 | /* wait until all current v4l2 io is finished then deallocate resources */ |
3593cab5 | 1884 | mutex_lock(&dev->lock); |
a6c2ba28 | 1885 | |
a6c2ba28 AM |
1886 | wake_up_interruptible_all(&dev->open); |
1887 | ||
1888 | if (dev->users) { | |
3acf2809 | 1889 | em28xx_warn |
a6c2ba28 | 1890 | ("device /dev/video%d is open! Deregistration and memory " |
e5589bef MCC |
1891 | "deallocation are deferred on close.\n", |
1892 | dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN); | |
1893 | ||
a6c2ba28 | 1894 | dev->state |= DEV_MISCONFIGURED; |
3acf2809 | 1895 | em28xx_uninit_isoc(dev); |
a6c2ba28 AM |
1896 | dev->state |= DEV_DISCONNECTED; |
1897 | wake_up_interruptible(&dev->wait_frame); | |
1898 | wake_up_interruptible(&dev->wait_stream); | |
1899 | } else { | |
1900 | dev->state |= DEV_DISCONNECTED; | |
3acf2809 | 1901 | em28xx_release_resources(dev); |
a6c2ba28 AM |
1902 | } |
1903 | ||
5a80415b | 1904 | |
3593cab5 | 1905 | mutex_unlock(&dev->lock); |
a6c2ba28 | 1906 | |
9d4d9c05 MCC |
1907 | if (!dev->users) { |
1908 | kfree(dev->alt_max_pkt_size); | |
a6c2ba28 | 1909 | kfree(dev); |
9d4d9c05 | 1910 | } |
a6c2ba28 | 1911 | |
a6c2ba28 AM |
1912 | } |
1913 | ||
3acf2809 | 1914 | static struct usb_driver em28xx_usb_driver = { |
3acf2809 MCC |
1915 | .name = "em28xx", |
1916 | .probe = em28xx_usb_probe, | |
1917 | .disconnect = em28xx_usb_disconnect, | |
1918 | .id_table = em28xx_id_table, | |
a6c2ba28 AM |
1919 | }; |
1920 | ||
3acf2809 | 1921 | static int __init em28xx_module_init(void) |
a6c2ba28 AM |
1922 | { |
1923 | int result; | |
1924 | ||
1925 | printk(KERN_INFO DRIVER_NAME " v4l2 driver version %d.%d.%d loaded\n", | |
3acf2809 MCC |
1926 | (EM28XX_VERSION_CODE >> 16) & 0xff, |
1927 | (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff); | |
a6c2ba28 AM |
1928 | #ifdef SNAPSHOT |
1929 | printk(KERN_INFO DRIVER_NAME " snapshot date %04d-%02d-%02d\n", | |
1930 | SNAPSHOT / 10000, (SNAPSHOT / 100) % 100, SNAPSHOT % 100); | |
1931 | #endif | |
1932 | ||
1933 | /* register this driver with the USB subsystem */ | |
3acf2809 | 1934 | result = usb_register(&em28xx_usb_driver); |
a6c2ba28 | 1935 | if (result) |
3acf2809 | 1936 | em28xx_err(DRIVER_NAME |
a6c2ba28 AM |
1937 | " usb_register failed. Error number %d.\n", result); |
1938 | ||
1939 | return result; | |
1940 | } | |
1941 | ||
3acf2809 | 1942 | static void __exit em28xx_module_exit(void) |
a6c2ba28 AM |
1943 | { |
1944 | /* deregister this driver with the USB subsystem */ | |
3acf2809 | 1945 | usb_deregister(&em28xx_usb_driver); |
a6c2ba28 AM |
1946 | } |
1947 | ||
3acf2809 MCC |
1948 | module_init(em28xx_module_init); |
1949 | module_exit(em28xx_module_exit); |