]>
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 | 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 | 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 | 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 | 105 | |
106 | /********************* v4l2 interface ******************************************/ | |
107 | ||
a6c2ba28 | 108 | /* |
3acf2809 | 109 | * em28xx_config() |
a6c2ba28 | 110 | * inits registers with sane defaults |
111 | */ | |
3acf2809 | 112 | static int em28xx_config(struct em28xx *dev) |
a6c2ba28 | 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 | 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 | ||
a6c2ba28 | 125 | dev->mute = 1; /* maybe not the right place... */ |
126 | dev->volume = 0x1f; | |
539c96d0 MCC |
127 | |
128 | /* Init XCLK_REG, audio muted */ | |
129 | dev->em28xx_write_regs(dev, XCLK_REG, "\x87", 1); | |
130 | ||
3acf2809 | 131 | em28xx_audio_analog_set(dev); |
3acf2809 MCC |
132 | em28xx_outfmt_set_yuv422(dev); |
133 | em28xx_colorlevels_set_default(dev); | |
134 | em28xx_compression_disable(dev); | |
a6c2ba28 | 135 | |
136 | return 0; | |
137 | } | |
138 | ||
139 | /* | |
3acf2809 | 140 | * em28xx_config_i2c() |
a6c2ba28 | 141 | * configure i2c attached devices |
142 | */ | |
943a4902 | 143 | static void em28xx_config_i2c(struct em28xx *dev) |
a6c2ba28 | 144 | { |
c7c0b34c HV |
145 | struct v4l2_routing route; |
146 | ||
147 | route.input = INPUT(dev->ctl_input)->vmux; | |
148 | route.output = 0; | |
663d1ba2 | 149 | em28xx_i2c_call_clients(dev, VIDIOC_INT_RESET, NULL); |
c7c0b34c | 150 | em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route); |
f5762e44 | 151 | em28xx_i2c_call_clients(dev, VIDIOC_STREAMON, NULL); |
a6c2ba28 | 152 | } |
153 | ||
154 | /* | |
3acf2809 | 155 | * em28xx_empty_framequeues() |
a6c2ba28 | 156 | * prepare queues for incoming and outgoing frames |
157 | */ | |
3acf2809 | 158 | static void em28xx_empty_framequeues(struct em28xx *dev) |
a6c2ba28 | 159 | { |
160 | u32 i; | |
161 | ||
162 | INIT_LIST_HEAD(&dev->inqueue); | |
163 | INIT_LIST_HEAD(&dev->outqueue); | |
164 | ||
3acf2809 | 165 | for (i = 0; i < EM28XX_NUM_FRAMES; i++) { |
a6c2ba28 | 166 | dev->frame[i].state = F_UNUSED; |
167 | dev->frame[i].buf.bytesused = 0; | |
168 | } | |
169 | } | |
170 | ||
eac94356 MCC |
171 | static void video_mux(struct em28xx *dev, int index) |
172 | { | |
c7c0b34c | 173 | struct v4l2_routing route; |
eac94356 | 174 | |
c7c0b34c HV |
175 | route.input = INPUT(index)->vmux; |
176 | route.output = 0; | |
eac94356 MCC |
177 | dev->ctl_input = index; |
178 | dev->ctl_ainput = INPUT(index)->amux; | |
179 | ||
c7c0b34c | 180 | em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route); |
eac94356 | 181 | |
eac94356 | 182 | if (dev->has_msp34xx) { |
9bb13a6d MCC |
183 | if (dev->i2s_speed) |
184 | em28xx_i2c_call_clients(dev, VIDIOC_INT_I2S_CLOCK_FREQ, &dev->i2s_speed); | |
2474ed44 | 185 | route.input = dev->ctl_ainput; |
07151724 | 186 | route.output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1); |
2474ed44 HV |
187 | /* Note: this is msp3400 specific */ |
188 | em28xx_i2c_call_clients(dev, VIDIOC_INT_S_AUDIO_ROUTING, &route); | |
eac94356 | 189 | } |
539c96d0 MCC |
190 | |
191 | em28xx_set_audio_source(dev); | |
eac94356 MCC |
192 | } |
193 | ||
a225452e MCC |
194 | /* Usage lock check functions */ |
195 | static int res_get(struct em28xx_fh *fh) | |
196 | { | |
197 | struct em28xx *dev = fh->dev; | |
198 | int rc = 0; | |
199 | ||
200 | /* This instance already has stream_on */ | |
201 | if (fh->stream_on) | |
202 | return rc; | |
203 | ||
204 | mutex_lock(&dev->lock); | |
205 | ||
206 | if (dev->stream_on) | |
207 | rc = -EINVAL; | |
208 | else { | |
209 | dev->stream_on = 1; | |
210 | fh->stream_on = 1; | |
211 | } | |
212 | ||
213 | mutex_unlock(&dev->lock); | |
214 | return rc; | |
215 | } | |
216 | ||
217 | static int res_check(struct em28xx_fh *fh) | |
218 | { | |
219 | return (fh->stream_on); | |
220 | } | |
221 | ||
222 | static void res_free(struct em28xx_fh *fh) | |
223 | { | |
224 | struct em28xx *dev = fh->dev; | |
225 | ||
226 | mutex_lock(&dev->lock); | |
227 | fh->stream_on = 0; | |
228 | dev->stream_on = 0; | |
229 | mutex_unlock(&dev->lock); | |
230 | } | |
231 | ||
a6c2ba28 | 232 | /* |
195a4ef6 | 233 | * em28xx_vm_open() |
a6c2ba28 | 234 | */ |
195a4ef6 | 235 | static void em28xx_vm_open(struct vm_area_struct *vma) |
a6c2ba28 | 236 | { |
195a4ef6 MCC |
237 | struct em28xx_frame_t *f = vma->vm_private_data; |
238 | f->vma_use_count++; | |
239 | } | |
9c75541f | 240 | |
195a4ef6 MCC |
241 | /* |
242 | * em28xx_vm_close() | |
243 | */ | |
244 | static void em28xx_vm_close(struct vm_area_struct *vma) | |
245 | { | |
246 | /* NOTE: buffers are not freed here */ | |
247 | struct em28xx_frame_t *f = vma->vm_private_data; | |
9c75541f | 248 | |
195a4ef6 MCC |
249 | if (f->vma_use_count) |
250 | f->vma_use_count--; | |
251 | } | |
a6c2ba28 | 252 | |
195a4ef6 MCC |
253 | static struct vm_operations_struct em28xx_vm_ops = { |
254 | .open = em28xx_vm_open, | |
255 | .close = em28xx_vm_close, | |
256 | }; | |
a6c2ba28 | 257 | |
195a4ef6 MCC |
258 | |
259 | /* | |
260 | * em28xx_get_ctrl() | |
261 | * return the current saturation, brightness or contrast, mute state | |
262 | */ | |
263 | static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl) | |
264 | { | |
265 | switch (ctrl->id) { | |
266 | case V4L2_CID_AUDIO_MUTE: | |
267 | ctrl->value = dev->mute; | |
268 | return 0; | |
269 | case V4L2_CID_AUDIO_VOLUME: | |
270 | ctrl->value = dev->volume; | |
271 | return 0; | |
272 | default: | |
273 | return -EINVAL; | |
a6c2ba28 | 274 | } |
195a4ef6 | 275 | } |
a6c2ba28 | 276 | |
195a4ef6 MCC |
277 | /* |
278 | * em28xx_set_ctrl() | |
279 | * mute or set new saturation, brightness or contrast | |
280 | */ | |
281 | static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl) | |
282 | { | |
283 | switch (ctrl->id) { | |
284 | case V4L2_CID_AUDIO_MUTE: | |
285 | if (ctrl->value != dev->mute) { | |
286 | dev->mute = ctrl->value; | |
195a4ef6 MCC |
287 | return em28xx_audio_analog_set(dev); |
288 | } | |
289 | return 0; | |
290 | case V4L2_CID_AUDIO_VOLUME: | |
291 | dev->volume = ctrl->value; | |
292 | return em28xx_audio_analog_set(dev); | |
293 | default: | |
294 | return -EINVAL; | |
295 | } | |
296 | } | |
a6c2ba28 | 297 | |
195a4ef6 MCC |
298 | /* |
299 | * em28xx_stream_interrupt() | |
300 | * stops streaming | |
301 | */ | |
302 | static int em28xx_stream_interrupt(struct em28xx *dev) | |
303 | { | |
304 | int rc = 0; | |
a6c2ba28 | 305 | |
195a4ef6 | 306 | /* stop reading from the device */ |
a6c2ba28 | 307 | |
195a4ef6 MCC |
308 | dev->stream = STREAM_INTERRUPT; |
309 | rc = wait_event_timeout(dev->wait_stream, | |
310 | (dev->stream == STREAM_OFF) || | |
311 | (dev->state & DEV_DISCONNECTED), | |
312 | EM28XX_URB_TIMEOUT); | |
e5d4a56d | 313 | |
195a4ef6 MCC |
314 | if (rc) { |
315 | dev->state |= DEV_MISCONFIGURED; | |
316 | em28xx_videodbg("device is misconfigured; close and " | |
317 | "open /dev/video%d again\n", | |
318 | dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN); | |
319 | return rc; | |
320 | } | |
e5589bef | 321 | |
195a4ef6 MCC |
322 | return 0; |
323 | } | |
324 | ||
325 | ||
326 | static int check_dev(struct em28xx *dev) | |
327 | { | |
328 | if (dev->state & DEV_DISCONNECTED) { | |
329 | em28xx_errdev("v4l2 ioctl: device not present\n"); | |
330 | return -ENODEV; | |
e5589bef | 331 | } |
a6c2ba28 | 332 | |
195a4ef6 MCC |
333 | if (dev->state & DEV_MISCONFIGURED) { |
334 | em28xx_errdev("v4l2 ioctl: device is misconfigured; " | |
335 | "close and open it again\n"); | |
336 | return -EIO; | |
337 | } | |
338 | return 0; | |
339 | } | |
a6c2ba28 | 340 | |
195a4ef6 MCC |
341 | static void get_scale(struct em28xx *dev, |
342 | unsigned int width, unsigned int height, | |
343 | unsigned int *hscale, unsigned int *vscale) | |
344 | { | |
345 | unsigned int maxw = norm_maxw(dev); | |
346 | unsigned int maxh = norm_maxh(dev); | |
347 | ||
348 | *hscale = (((unsigned long)maxw) << 12) / width - 4096L; | |
349 | if (*hscale >= 0x4000) | |
350 | *hscale = 0x3fff; | |
351 | ||
352 | *vscale = (((unsigned long)maxh) << 12) / height - 4096L; | |
353 | if (*vscale >= 0x4000) | |
354 | *vscale = 0x3fff; | |
a6c2ba28 | 355 | } |
356 | ||
195a4ef6 MCC |
357 | /* ------------------------------------------------------------------ |
358 | IOCTL vidioc handling | |
359 | ------------------------------------------------------------------*/ | |
360 | ||
361 | static int vidioc_g_fmt_cap(struct file *file, void *priv, | |
362 | struct v4l2_format *f) | |
a6c2ba28 | 363 | { |
195a4ef6 MCC |
364 | struct em28xx_fh *fh = priv; |
365 | struct em28xx *dev = fh->dev; | |
a6c2ba28 | 366 | |
195a4ef6 | 367 | mutex_lock(&dev->lock); |
e5589bef | 368 | |
195a4ef6 MCC |
369 | f->fmt.pix.width = dev->width; |
370 | f->fmt.pix.height = dev->height; | |
371 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; | |
372 | f->fmt.pix.bytesperline = dev->bytesperline; | |
373 | f->fmt.pix.sizeimage = dev->frame_size; | |
374 | f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; | |
e5589bef | 375 | |
195a4ef6 MCC |
376 | /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */ |
377 | f->fmt.pix.field = dev->interlaced ? | |
378 | V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; | |
e5589bef | 379 | |
195a4ef6 MCC |
380 | mutex_unlock(&dev->lock); |
381 | return 0; | |
a6c2ba28 | 382 | } |
383 | ||
195a4ef6 MCC |
384 | static int vidioc_try_fmt_cap(struct file *file, void *priv, |
385 | struct v4l2_format *f) | |
a6c2ba28 | 386 | { |
195a4ef6 MCC |
387 | struct em28xx_fh *fh = priv; |
388 | struct em28xx *dev = fh->dev; | |
389 | int width = f->fmt.pix.width; | |
390 | int height = f->fmt.pix.height; | |
391 | unsigned int maxw = norm_maxw(dev); | |
392 | unsigned int maxh = norm_maxh(dev); | |
393 | unsigned int hscale, vscale; | |
394 | ||
395 | /* width must even because of the YUYV format | |
396 | height must be even because of interlacing */ | |
397 | height &= 0xfffe; | |
398 | width &= 0xfffe; | |
a6c2ba28 | 399 | |
195a4ef6 MCC |
400 | if (height < 32) |
401 | height = 32; | |
402 | if (height > maxh) | |
403 | height = maxh; | |
404 | if (width < 48) | |
405 | width = 48; | |
406 | if (width > maxw) | |
407 | width = maxw; | |
a6c2ba28 | 408 | |
195a4ef6 | 409 | mutex_lock(&dev->lock); |
a225452e | 410 | |
195a4ef6 MCC |
411 | if (dev->is_em2800) { |
412 | /* the em2800 can only scale down to 50% */ | |
413 | if (height % (maxh / 2)) | |
414 | height = maxh; | |
415 | if (width % (maxw / 2)) | |
416 | width = maxw; | |
417 | /* according to empiatech support */ | |
418 | /* the MaxPacketSize is to small to support */ | |
419 | /* framesizes larger than 640x480 @ 30 fps */ | |
420 | /* or 640x576 @ 25 fps. As this would cut */ | |
421 | /* of a part of the image we prefer */ | |
422 | /* 360x576 or 360x480 for now */ | |
423 | if (width == maxw && height == maxh) | |
424 | width /= 2; | |
425 | } | |
a225452e | 426 | |
195a4ef6 | 427 | get_scale(dev, width, height, &hscale, &vscale); |
a6c2ba28 | 428 | |
195a4ef6 MCC |
429 | width = (((unsigned long)maxw) << 12) / (hscale + 4096L); |
430 | height = (((unsigned long)maxh) << 12) / (vscale + 4096L); | |
a6c2ba28 | 431 | |
195a4ef6 MCC |
432 | f->fmt.pix.width = width; |
433 | f->fmt.pix.height = height; | |
434 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; | |
435 | f->fmt.pix.bytesperline = width * 2; | |
436 | f->fmt.pix.sizeimage = width * 2 * height; | |
437 | f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; | |
438 | f->fmt.pix.field = V4L2_FIELD_INTERLACED; | |
a6c2ba28 | 439 | |
3593cab5 | 440 | mutex_unlock(&dev->lock); |
a6c2ba28 | 441 | return 0; |
442 | } | |
443 | ||
195a4ef6 MCC |
444 | static int vidioc_s_fmt_cap(struct file *file, void *priv, |
445 | struct v4l2_format *f) | |
a6c2ba28 | 446 | { |
195a4ef6 MCC |
447 | struct em28xx_fh *fh = priv; |
448 | struct em28xx *dev = fh->dev; | |
449 | int rc, i; | |
a6c2ba28 | 450 | |
195a4ef6 MCC |
451 | rc = check_dev(dev); |
452 | if (rc < 0) | |
453 | return rc; | |
a225452e | 454 | |
195a4ef6 | 455 | vidioc_try_fmt_cap(file, priv, f); |
a225452e | 456 | |
5a80415b SS |
457 | mutex_lock(&dev->lock); |
458 | ||
195a4ef6 MCC |
459 | for (i = 0; i < dev->num_frames; i++) |
460 | if (dev->frame[i].vma_use_count) { | |
461 | em28xx_videodbg("VIDIOC_S_FMT failed. " | |
462 | "Unmap the buffers first.\n"); | |
463 | rc = -EINVAL; | |
464 | goto err; | |
e5589bef | 465 | } |
195a4ef6 MCC |
466 | |
467 | /* stop io in case it is already in progress */ | |
468 | if (dev->stream == STREAM_ON) { | |
469 | em28xx_videodbg("VIDIOC_SET_FMT: interrupting stream\n"); | |
470 | rc = em28xx_stream_interrupt(dev); | |
471 | if (rc < 0) | |
472 | goto err; | |
e5589bef MCC |
473 | } |
474 | ||
195a4ef6 MCC |
475 | em28xx_release_buffers(dev); |
476 | dev->io = IO_NONE; | |
a6c2ba28 | 477 | |
195a4ef6 MCC |
478 | /* set new image size */ |
479 | dev->width = f->fmt.pix.width; | |
480 | dev->height = f->fmt.pix.height; | |
481 | dev->frame_size = dev->width * dev->height * 2; | |
482 | dev->field_size = dev->frame_size >> 1; | |
483 | dev->bytesperline = dev->width * 2; | |
484 | get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale); | |
a6c2ba28 | 485 | |
195a4ef6 MCC |
486 | /* FIXME: This is really weird! Why capture is starting with |
487 | this ioctl ??? | |
488 | */ | |
489 | em28xx_uninit_isoc(dev); | |
490 | em28xx_set_alternate(dev); | |
491 | em28xx_capture_start(dev, 1); | |
492 | em28xx_resolution_set(dev); | |
493 | em28xx_init_isoc(dev); | |
494 | rc = 0; | |
495 | ||
496 | err: | |
497 | mutex_unlock(&dev->lock); | |
498 | return rc; | |
499 | } | |
500 | ||
501 | static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm) | |
502 | { | |
503 | struct em28xx_fh *fh = priv; | |
504 | struct em28xx *dev = fh->dev; | |
505 | struct v4l2_format f; | |
195a4ef6 MCC |
506 | int rc; |
507 | ||
508 | rc = check_dev(dev); | |
509 | if (rc < 0) | |
510 | return rc; | |
511 | ||
195a4ef6 | 512 | mutex_lock(&dev->lock); |
7d497f8a | 513 | dev->norm = *norm; |
195a4ef6 | 514 | mutex_unlock(&dev->lock); |
a6c2ba28 | 515 | |
195a4ef6 MCC |
516 | /* Adjusts width/height, if needed */ |
517 | f.fmt.pix.width = dev->width; | |
518 | f.fmt.pix.height = dev->height; | |
519 | vidioc_try_fmt_cap(file, priv, &f); | |
a6c2ba28 | 520 | |
195a4ef6 | 521 | mutex_lock(&dev->lock); |
a6c2ba28 | 522 | |
195a4ef6 MCC |
523 | /* set new image size */ |
524 | dev->width = f.fmt.pix.width; | |
525 | dev->height = f.fmt.pix.height; | |
526 | dev->frame_size = dev->width * dev->height * 2; | |
527 | dev->field_size = dev->frame_size >> 1; | |
528 | dev->bytesperline = dev->width * 2; | |
529 | get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale); | |
a6c2ba28 | 530 | |
195a4ef6 | 531 | em28xx_resolution_set(dev); |
7d497f8a | 532 | em28xx_i2c_call_clients(dev, VIDIOC_S_STD, &dev->norm); |
a6c2ba28 | 533 | |
195a4ef6 MCC |
534 | mutex_unlock(&dev->lock); |
535 | return 0; | |
536 | } | |
9e31ced8 | 537 | |
195a4ef6 MCC |
538 | static const char *iname[] = { |
539 | [EM28XX_VMUX_COMPOSITE1] = "Composite1", | |
540 | [EM28XX_VMUX_COMPOSITE2] = "Composite2", | |
541 | [EM28XX_VMUX_COMPOSITE3] = "Composite3", | |
542 | [EM28XX_VMUX_COMPOSITE4] = "Composite4", | |
543 | [EM28XX_VMUX_SVIDEO] = "S-Video", | |
544 | [EM28XX_VMUX_TELEVISION] = "Television", | |
545 | [EM28XX_VMUX_CABLE] = "Cable TV", | |
546 | [EM28XX_VMUX_DVB] = "DVB", | |
547 | [EM28XX_VMUX_DEBUG] = "for debug only", | |
548 | }; | |
9e31ced8 | 549 | |
195a4ef6 MCC |
550 | static int vidioc_enum_input(struct file *file, void *priv, |
551 | struct v4l2_input *i) | |
552 | { | |
553 | struct em28xx_fh *fh = priv; | |
554 | struct em28xx *dev = fh->dev; | |
555 | unsigned int n; | |
9e31ced8 | 556 | |
195a4ef6 MCC |
557 | n = i->index; |
558 | if (n >= MAX_EM28XX_INPUT) | |
559 | return -EINVAL; | |
560 | if (0 == INPUT(n)->type) | |
561 | return -EINVAL; | |
9e31ced8 | 562 | |
195a4ef6 MCC |
563 | i->index = n; |
564 | i->type = V4L2_INPUT_TYPE_CAMERA; | |
a6c2ba28 | 565 | |
195a4ef6 | 566 | strcpy(i->name, iname[INPUT(n)->type]); |
a6c2ba28 | 567 | |
195a4ef6 MCC |
568 | if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) || |
569 | (EM28XX_VMUX_CABLE == INPUT(n)->type)) | |
570 | i->type = V4L2_INPUT_TYPE_TUNER; | |
571 | ||
7d497f8a | 572 | i->std = dev->vdev->tvnorms; |
195a4ef6 MCC |
573 | |
574 | return 0; | |
a6c2ba28 | 575 | } |
576 | ||
195a4ef6 | 577 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) |
a6c2ba28 | 578 | { |
195a4ef6 MCC |
579 | struct em28xx_fh *fh = priv; |
580 | struct em28xx *dev = fh->dev; | |
a6c2ba28 | 581 | |
195a4ef6 MCC |
582 | *i = dev->ctl_input; |
583 | ||
584 | return 0; | |
585 | } | |
586 | ||
587 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) | |
588 | { | |
589 | struct em28xx_fh *fh = priv; | |
590 | struct em28xx *dev = fh->dev; | |
591 | int rc; | |
592 | ||
593 | rc = check_dev(dev); | |
594 | if (rc < 0) | |
595 | return rc; | |
596 | ||
597 | if (i >= MAX_EM28XX_INPUT) | |
598 | return -EINVAL; | |
599 | if (0 == INPUT(i)->type) | |
600 | return -EINVAL; | |
a225452e | 601 | |
5a80415b | 602 | mutex_lock(&dev->lock); |
a6c2ba28 | 603 | |
195a4ef6 MCC |
604 | video_mux(dev, i); |
605 | ||
606 | mutex_unlock(&dev->lock); | |
607 | return 0; | |
608 | } | |
609 | ||
610 | static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a) | |
611 | { | |
612 | struct em28xx_fh *fh = priv; | |
613 | struct em28xx *dev = fh->dev; | |
614 | unsigned int index = a->index; | |
615 | ||
616 | if (a->index > 1) | |
617 | return -EINVAL; | |
618 | ||
619 | index = dev->ctl_ainput; | |
620 | ||
621 | if (index == 0) { | |
622 | strcpy(a->name, "Television"); | |
a6c2ba28 | 623 | } else { |
195a4ef6 MCC |
624 | strcpy(a->name, "Line In"); |
625 | } | |
626 | a->capability = V4L2_AUDCAP_STEREO; | |
627 | a->index = index; | |
628 | ||
629 | return 0; | |
630 | } | |
631 | ||
632 | static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a) | |
633 | { | |
634 | struct em28xx_fh *fh = priv; | |
635 | struct em28xx *dev = fh->dev; | |
636 | ||
637 | if (a->index != dev->ctl_ainput) | |
638 | return -EINVAL; | |
639 | ||
640 | return 0; | |
641 | } | |
642 | ||
643 | static int vidioc_queryctrl(struct file *file, void *priv, | |
644 | struct v4l2_queryctrl *qc) | |
645 | { | |
646 | struct em28xx_fh *fh = priv; | |
647 | struct em28xx *dev = fh->dev; | |
648 | int id = qc->id; | |
649 | int i; | |
650 | int rc; | |
651 | ||
652 | rc = check_dev(dev); | |
653 | if (rc < 0) | |
654 | return rc; | |
655 | ||
656 | memset(qc, 0, sizeof(*qc)); | |
657 | ||
658 | qc->id = id; | |
659 | ||
660 | if (!dev->has_msp34xx) { | |
661 | for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) { | |
662 | if (qc->id && qc->id == em28xx_qctrl[i].id) { | |
663 | memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc)); | |
664 | return 0; | |
a6c2ba28 | 665 | } |
666 | } | |
195a4ef6 MCC |
667 | } |
668 | mutex_lock(&dev->lock); | |
669 | em28xx_i2c_call_clients(dev, VIDIOC_QUERYCTRL, qc); | |
670 | mutex_unlock(&dev->lock); | |
a6c2ba28 | 671 | |
195a4ef6 MCC |
672 | if (qc->type) |
673 | return 0; | |
674 | else | |
675 | return -EINVAL; | |
676 | } | |
a6c2ba28 | 677 | |
195a4ef6 MCC |
678 | static int vidioc_g_ctrl(struct file *file, void *priv, |
679 | struct v4l2_control *ctrl) | |
680 | { | |
681 | struct em28xx_fh *fh = priv; | |
682 | struct em28xx *dev = fh->dev; | |
683 | int rc; | |
a6c2ba28 | 684 | |
195a4ef6 MCC |
685 | rc = check_dev(dev); |
686 | if (rc < 0) | |
687 | return rc; | |
688 | mutex_lock(&dev->lock); | |
a6c2ba28 | 689 | |
195a4ef6 MCC |
690 | if (!dev->has_msp34xx) |
691 | rc = em28xx_get_ctrl(dev, ctrl); | |
692 | else | |
693 | rc = -EINVAL; | |
694 | ||
695 | if (rc == -EINVAL) { | |
696 | em28xx_i2c_call_clients(dev, VIDIOC_G_CTRL, ctrl); | |
697 | rc = 0; | |
698 | } | |
699 | ||
700 | mutex_unlock(&dev->lock); | |
701 | return rc; | |
702 | } | |
703 | ||
704 | static int vidioc_s_ctrl(struct file *file, void *priv, | |
705 | struct v4l2_control *ctrl) | |
706 | { | |
707 | struct em28xx_fh *fh = priv; | |
708 | struct em28xx *dev = fh->dev; | |
709 | u8 i; | |
710 | int rc; | |
711 | ||
712 | rc = check_dev(dev); | |
713 | if (rc < 0) | |
714 | return rc; | |
715 | ||
716 | mutex_lock(&dev->lock); | |
717 | ||
718 | if (dev->has_msp34xx) | |
719 | em28xx_i2c_call_clients(dev, VIDIOC_S_CTRL, ctrl); | |
720 | else { | |
721 | rc = 1; | |
722 | for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) { | |
723 | if (ctrl->id == em28xx_qctrl[i].id) { | |
724 | if (ctrl->value < em28xx_qctrl[i].minimum || | |
725 | ctrl->value > em28xx_qctrl[i].maximum) { | |
726 | rc = -ERANGE; | |
727 | break; | |
728 | } | |
729 | ||
730 | rc = em28xx_set_ctrl(dev, ctrl); | |
731 | break; | |
732 | } | |
a6c2ba28 | 733 | } |
734 | } | |
735 | ||
195a4ef6 MCC |
736 | /* Control not found - try to send it to the attached devices */ |
737 | if (rc == 1) { | |
738 | em28xx_i2c_call_clients(dev, VIDIOC_S_CTRL, ctrl); | |
739 | rc = 0; | |
740 | } | |
741 | ||
5a80415b | 742 | mutex_unlock(&dev->lock); |
195a4ef6 | 743 | return rc; |
a6c2ba28 | 744 | } |
745 | ||
195a4ef6 MCC |
746 | static int vidioc_g_tuner(struct file *file, void *priv, |
747 | struct v4l2_tuner *t) | |
a6c2ba28 | 748 | { |
195a4ef6 MCC |
749 | struct em28xx_fh *fh = priv; |
750 | struct em28xx *dev = fh->dev; | |
751 | int rc; | |
752 | ||
753 | rc = check_dev(dev); | |
754 | if (rc < 0) | |
755 | return rc; | |
756 | ||
757 | if (0 != t->index) | |
758 | return -EINVAL; | |
759 | ||
760 | strcpy(t->name, "Tuner"); | |
761 | ||
762 | mutex_lock(&dev->lock); | |
763 | ||
764 | em28xx_i2c_call_clients(dev, VIDIOC_G_TUNER, t); | |
765 | ||
766 | mutex_unlock(&dev->lock); | |
767 | return 0; | |
a6c2ba28 | 768 | } |
769 | ||
195a4ef6 MCC |
770 | static int vidioc_s_tuner(struct file *file, void *priv, |
771 | struct v4l2_tuner *t) | |
a6c2ba28 | 772 | { |
195a4ef6 MCC |
773 | struct em28xx_fh *fh = priv; |
774 | struct em28xx *dev = fh->dev; | |
775 | int rc; | |
63337dd3 | 776 | |
195a4ef6 MCC |
777 | rc = check_dev(dev); |
778 | if (rc < 0) | |
779 | return rc; | |
780 | ||
781 | if (0 != t->index) | |
782 | return -EINVAL; | |
783 | ||
784 | mutex_lock(&dev->lock); | |
785 | ||
786 | em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, t); | |
787 | ||
788 | mutex_unlock(&dev->lock); | |
789 | return 0; | |
a6c2ba28 | 790 | } |
791 | ||
195a4ef6 MCC |
792 | static int vidioc_g_frequency(struct file *file, void *priv, |
793 | struct v4l2_frequency *f) | |
794 | { | |
795 | struct em28xx_fh *fh = priv; | |
796 | struct em28xx *dev = fh->dev; | |
a6c2ba28 | 797 | |
195a4ef6 MCC |
798 | f->type = V4L2_TUNER_ANALOG_TV; |
799 | f->frequency = dev->ctl_freq; | |
800 | ||
801 | return 0; | |
802 | } | |
803 | ||
804 | static int vidioc_s_frequency(struct file *file, void *priv, | |
805 | struct v4l2_frequency *f) | |
a6c2ba28 | 806 | { |
195a4ef6 MCC |
807 | struct em28xx_fh *fh = priv; |
808 | struct em28xx *dev = fh->dev; | |
809 | int rc; | |
9c75541f | 810 | |
195a4ef6 MCC |
811 | rc = check_dev(dev); |
812 | if (rc < 0) | |
813 | return rc; | |
814 | ||
815 | if (0 != f->tuner) | |
816 | return -EINVAL; | |
817 | ||
818 | if (V4L2_TUNER_ANALOG_TV != f->type) | |
819 | return -EINVAL; | |
a225452e MCC |
820 | |
821 | mutex_lock(&dev->lock); | |
a3a048ce | 822 | |
195a4ef6 MCC |
823 | dev->ctl_freq = f->frequency; |
824 | em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f); | |
a6c2ba28 | 825 | |
195a4ef6 MCC |
826 | mutex_unlock(&dev->lock); |
827 | return 0; | |
828 | } | |
a6c2ba28 | 829 | |
195a4ef6 MCC |
830 | static int vidioc_cropcap(struct file *file, void *priv, |
831 | struct v4l2_cropcap *cc) | |
832 | { | |
833 | struct em28xx_fh *fh = priv; | |
834 | struct em28xx *dev = fh->dev; | |
835 | ||
836 | if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
a6c2ba28 | 837 | return -EINVAL; |
a6c2ba28 | 838 | |
195a4ef6 MCC |
839 | cc->bounds.left = 0; |
840 | cc->bounds.top = 0; | |
841 | cc->bounds.width = dev->width; | |
842 | cc->bounds.height = dev->height; | |
843 | cc->defrect = cc->bounds; | |
844 | cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */ | |
845 | cc->pixelaspect.denominator = 59; | |
846 | ||
847 | return 0; | |
848 | } | |
849 | ||
850 | static int vidioc_streamon(struct file *file, void *priv, | |
851 | enum v4l2_buf_type type) | |
852 | { | |
853 | struct em28xx_fh *fh = priv; | |
854 | struct em28xx *dev = fh->dev; | |
855 | int rc; | |
856 | ||
857 | rc = check_dev(dev); | |
858 | if (rc < 0) | |
859 | return rc; | |
860 | ||
861 | if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP) | |
a6c2ba28 | 862 | return -EINVAL; |
195a4ef6 MCC |
863 | |
864 | if (list_empty(&dev->inqueue)) | |
865 | return -EINVAL; | |
866 | ||
867 | mutex_lock(&dev->lock); | |
868 | ||
869 | if (unlikely(res_get(fh) < 0)) { | |
870 | mutex_unlock(&dev->lock); | |
871 | return -EBUSY; | |
a6c2ba28 | 872 | } |
873 | ||
195a4ef6 | 874 | dev->stream = STREAM_ON; /* FIXME: Start video capture here? */ |
a6c2ba28 | 875 | |
195a4ef6 MCC |
876 | mutex_unlock(&dev->lock); |
877 | return 0; | |
878 | } | |
879 | ||
880 | static int vidioc_streamoff(struct file *file, void *priv, | |
881 | enum v4l2_buf_type type) | |
882 | { | |
883 | struct em28xx_fh *fh = priv; | |
884 | struct em28xx *dev = fh->dev; | |
885 | int rc; | |
886 | ||
887 | rc = check_dev(dev); | |
888 | if (rc < 0) | |
889 | return rc; | |
890 | ||
891 | if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP) | |
892 | return -EINVAL; | |
893 | ||
894 | mutex_lock(&dev->lock); | |
895 | ||
896 | if (dev->stream == STREAM_ON) { | |
897 | em28xx_videodbg("VIDIOC_STREAMOFF: interrupting stream\n"); | |
898 | rc = em28xx_stream_interrupt(dev); | |
899 | if (rc < 0) { | |
5a80415b | 900 | mutex_unlock(&dev->lock); |
195a4ef6 | 901 | return rc; |
a6c2ba28 | 902 | } |
a6c2ba28 | 903 | } |
904 | ||
195a4ef6 | 905 | em28xx_empty_framequeues(dev); |
a6c2ba28 | 906 | |
5a80415b | 907 | mutex_unlock(&dev->lock); |
a6c2ba28 | 908 | return 0; |
909 | } | |
910 | ||
195a4ef6 MCC |
911 | static int vidioc_querycap(struct file *file, void *priv, |
912 | struct v4l2_capability *cap) | |
a6c2ba28 | 913 | { |
195a4ef6 MCC |
914 | struct em28xx_fh *fh = priv; |
915 | struct em28xx *dev = fh->dev; | |
916 | ||
917 | strlcpy(cap->driver, "em28xx", sizeof(cap->driver)); | |
918 | strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card)); | |
919 | strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info)); | |
920 | ||
921 | cap->version = EM28XX_VERSION_CODE; | |
922 | ||
923 | cap->capabilities = | |
924 | V4L2_CAP_SLICED_VBI_CAPTURE | | |
925 | V4L2_CAP_VIDEO_CAPTURE | | |
926 | V4L2_CAP_AUDIO | | |
927 | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; | |
928 | ||
929 | if (dev->has_tuner) | |
930 | cap->capabilities |= V4L2_CAP_TUNER; | |
931 | ||
932 | return 0; | |
c0477ad9 MCC |
933 | } |
934 | ||
195a4ef6 MCC |
935 | static int vidioc_enum_fmt_cap(struct file *file, void *priv, |
936 | struct v4l2_fmtdesc *fmtd) | |
a6c2ba28 | 937 | { |
195a4ef6 | 938 | if (fmtd->index != 0) |
c0477ad9 | 939 | return -EINVAL; |
195a4ef6 MCC |
940 | |
941 | fmtd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
942 | strcpy(fmtd->description, "Packed YUY2"); | |
943 | fmtd->pixelformat = V4L2_PIX_FMT_YUYV; | |
944 | memset(fmtd->reserved, 0, sizeof(fmtd->reserved)); | |
945 | ||
946 | return 0; | |
c0477ad9 MCC |
947 | } |
948 | ||
195a4ef6 MCC |
949 | /* Sliced VBI ioctls */ |
950 | static int vidioc_g_fmt_vbi_capture(struct file *file, void *priv, | |
951 | struct v4l2_format *f) | |
a6c2ba28 | 952 | { |
195a4ef6 MCC |
953 | struct em28xx_fh *fh = priv; |
954 | struct em28xx *dev = fh->dev; | |
955 | int rc; | |
a6c2ba28 | 956 | |
195a4ef6 MCC |
957 | rc = check_dev(dev); |
958 | if (rc < 0) | |
959 | return rc; | |
a6c2ba28 | 960 | |
195a4ef6 MCC |
961 | mutex_lock(&dev->lock); |
962 | ||
963 | f->fmt.sliced.service_set = 0; | |
964 | ||
965 | em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f); | |
966 | ||
967 | if (f->fmt.sliced.service_set == 0) | |
968 | rc = -EINVAL; | |
969 | ||
970 | mutex_unlock(&dev->lock); | |
971 | return rc; | |
972 | } | |
973 | ||
974 | static int vidioc_try_set_vbi_capture(struct file *file, void *priv, | |
975 | struct v4l2_format *f) | |
976 | { | |
977 | struct em28xx_fh *fh = priv; | |
978 | struct em28xx *dev = fh->dev; | |
979 | int rc; | |
980 | ||
981 | rc = check_dev(dev); | |
982 | if (rc < 0) | |
983 | return rc; | |
984 | ||
985 | mutex_lock(&dev->lock); | |
986 | em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f); | |
987 | mutex_unlock(&dev->lock); | |
988 | ||
989 | if (f->fmt.sliced.service_set == 0) | |
990 | return -EINVAL; | |
a6c2ba28 | 991 | |
992 | return 0; | |
993 | } | |
994 | ||
195a4ef6 MCC |
995 | |
996 | static int vidioc_reqbufs(struct file *file, void *priv, | |
997 | struct v4l2_requestbuffers *rb) | |
a6c2ba28 | 998 | { |
195a4ef6 MCC |
999 | struct em28xx_fh *fh = priv; |
1000 | struct em28xx *dev = fh->dev; | |
1001 | u32 i; | |
1002 | int rc; | |
a6c2ba28 | 1003 | |
195a4ef6 MCC |
1004 | rc = check_dev(dev); |
1005 | if (rc < 0) | |
1006 | return rc; | |
a6c2ba28 | 1007 | |
195a4ef6 MCC |
1008 | if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
1009 | rb->memory != V4L2_MEMORY_MMAP) | |
1010 | return -EINVAL; | |
a6c2ba28 | 1011 | |
195a4ef6 MCC |
1012 | if (dev->io == IO_READ) { |
1013 | em28xx_videodbg("method is set to read;" | |
1014 | " close and open the device again to" | |
1015 | " choose the mmap I/O method\n"); | |
1016 | return -EINVAL; | |
1017 | } | |
a6c2ba28 | 1018 | |
195a4ef6 MCC |
1019 | for (i = 0; i < dev->num_frames; i++) |
1020 | if (dev->frame[i].vma_use_count) { | |
1021 | em28xx_videodbg("VIDIOC_REQBUFS failed; " | |
1022 | "previous buffers are still mapped\n"); | |
1023 | return -EINVAL; | |
1024 | } | |
a6c2ba28 | 1025 | |
195a4ef6 | 1026 | mutex_lock(&dev->lock); |
a6c2ba28 | 1027 | |
195a4ef6 MCC |
1028 | if (dev->stream == STREAM_ON) { |
1029 | em28xx_videodbg("VIDIOC_REQBUFS: interrupting stream\n"); | |
1030 | rc = em28xx_stream_interrupt(dev); | |
1031 | if (rc < 0) { | |
1032 | mutex_unlock(&dev->lock); | |
1033 | return rc; | |
1034 | } | |
1035 | } | |
a6c2ba28 | 1036 | |
195a4ef6 MCC |
1037 | em28xx_empty_framequeues(dev); |
1038 | ||
1039 | em28xx_release_buffers(dev); | |
1040 | if (rb->count) | |
1041 | rb->count = em28xx_request_buffers(dev, rb->count); | |
1042 | ||
1043 | dev->frame_current = NULL; | |
1044 | dev->io = rb->count ? IO_MMAP : IO_NONE; | |
a6c2ba28 | 1045 | |
195a4ef6 | 1046 | mutex_unlock(&dev->lock); |
a6c2ba28 | 1047 | return 0; |
1048 | } | |
1049 | ||
195a4ef6 MCC |
1050 | static int vidioc_querybuf(struct file *file, void *priv, |
1051 | struct v4l2_buffer *b) | |
e5589bef | 1052 | { |
195a4ef6 MCC |
1053 | struct em28xx_fh *fh = priv; |
1054 | struct em28xx *dev = fh->dev; | |
1055 | int rc; | |
e5589bef | 1056 | |
195a4ef6 MCC |
1057 | rc = check_dev(dev); |
1058 | if (rc < 0) | |
1059 | return rc; | |
2d50f847 | 1060 | |
195a4ef6 MCC |
1061 | if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
1062 | b->index >= dev->num_frames || dev->io != IO_MMAP) | |
1063 | return -EINVAL; | |
2d50f847 | 1064 | |
195a4ef6 | 1065 | mutex_lock(&dev->lock); |
2d50f847 | 1066 | |
195a4ef6 | 1067 | memcpy(b, &dev->frame[b->index].buf, sizeof(*b)); |
2d50f847 | 1068 | |
195a4ef6 MCC |
1069 | if (dev->frame[b->index].vma_use_count) |
1070 | b->flags |= V4L2_BUF_FLAG_MAPPED; | |
1071 | ||
1072 | if (dev->frame[b->index].state == F_DONE) | |
1073 | b->flags |= V4L2_BUF_FLAG_DONE; | |
1074 | else if (dev->frame[b->index].state != F_UNUSED) | |
1075 | b->flags |= V4L2_BUF_FLAG_QUEUED; | |
1076 | ||
1077 | mutex_unlock(&dev->lock); | |
1078 | return 0; | |
1079 | } | |
1080 | ||
1081 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b) | |
1082 | { | |
1083 | struct em28xx_fh *fh = priv; | |
1084 | struct em28xx *dev = fh->dev; | |
1085 | unsigned long lock_flags; | |
1086 | int rc; | |
1087 | ||
1088 | rc = check_dev(dev); | |
1089 | if (rc < 0) | |
1090 | return rc; | |
1091 | ||
1092 | if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP || | |
1093 | b->index >= dev->num_frames) | |
2d50f847 | 1094 | return -EINVAL; |
195a4ef6 MCC |
1095 | |
1096 | if (dev->frame[b->index].state != F_UNUSED) | |
1097 | return -EAGAIN; | |
1098 | ||
1099 | dev->frame[b->index].state = F_QUEUED; | |
1100 | ||
1101 | /* add frame to fifo */ | |
1102 | spin_lock_irqsave(&dev->queue_lock, lock_flags); | |
1103 | list_add_tail(&dev->frame[b->index].frame, &dev->inqueue); | |
1104 | spin_unlock_irqrestore(&dev->queue_lock, lock_flags); | |
1105 | ||
1106 | return 0; | |
e5589bef MCC |
1107 | } |
1108 | ||
195a4ef6 | 1109 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) |
2d50f847 | 1110 | { |
195a4ef6 MCC |
1111 | struct em28xx_fh *fh = priv; |
1112 | struct em28xx *dev = fh->dev; | |
1113 | int rc; | |
1114 | struct em28xx_frame_t *f; | |
1115 | unsigned long lock_flags; | |
1116 | ||
1117 | rc = check_dev(dev); | |
1118 | if (rc < 0) | |
1119 | return rc; | |
2d50f847 | 1120 | |
195a4ef6 MCC |
1121 | if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP) |
1122 | return -EINVAL; | |
2d50f847 | 1123 | |
195a4ef6 MCC |
1124 | if (list_empty(&dev->outqueue)) { |
1125 | if (dev->stream == STREAM_OFF) | |
1126 | return -EINVAL; | |
2d50f847 | 1127 | |
195a4ef6 MCC |
1128 | if (file->f_flags & O_NONBLOCK) |
1129 | return -EAGAIN; | |
2d50f847 | 1130 | |
195a4ef6 MCC |
1131 | rc = wait_event_interruptible(dev->wait_frame, |
1132 | (!list_empty(&dev->outqueue)) || | |
1133 | (dev->state & DEV_DISCONNECTED)); | |
1134 | if (rc) | |
1135 | return rc; | |
2d50f847 | 1136 | |
195a4ef6 MCC |
1137 | if (dev->state & DEV_DISCONNECTED) |
1138 | return -ENODEV; | |
2d50f847 MCC |
1139 | } |
1140 | ||
195a4ef6 MCC |
1141 | spin_lock_irqsave(&dev->queue_lock, lock_flags); |
1142 | f = list_entry(dev->outqueue.next, struct em28xx_frame_t, frame); | |
1143 | list_del(dev->outqueue.next); | |
1144 | spin_unlock_irqrestore(&dev->queue_lock, lock_flags); | |
2d50f847 | 1145 | |
195a4ef6 MCC |
1146 | f->state = F_UNUSED; |
1147 | memcpy(b, &f->buf, sizeof(*b)); | |
2d50f847 | 1148 | |
195a4ef6 MCC |
1149 | if (f->vma_use_count) |
1150 | b->flags |= V4L2_BUF_FLAG_MAPPED; | |
2d50f847 | 1151 | |
195a4ef6 MCC |
1152 | return 0; |
1153 | } | |
2d50f847 | 1154 | |
195a4ef6 MCC |
1155 | /* |
1156 | * em28xx_v4l2_open() | |
1157 | * inits the device and starts isoc transfer | |
1158 | */ | |
1159 | static int em28xx_v4l2_open(struct inode *inode, struct file *filp) | |
1160 | { | |
1161 | int minor = iminor(inode); | |
1162 | int errCode = 0; | |
1163 | struct em28xx *h,*dev = NULL; | |
1164 | struct em28xx_fh *fh; | |
2d50f847 | 1165 | |
195a4ef6 MCC |
1166 | list_for_each_entry(h, &em28xx_devlist, devlist) { |
1167 | if (h->vdev->minor == minor) { | |
1168 | dev = h; | |
1169 | dev->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1170 | } | |
1171 | if (h->vbi_dev->minor == minor) { | |
1172 | dev = h; | |
1173 | dev->type = V4L2_BUF_TYPE_VBI_CAPTURE; | |
1174 | } | |
2d50f847 | 1175 | } |
195a4ef6 MCC |
1176 | if (NULL == dev) |
1177 | return -ENODEV; | |
2d50f847 | 1178 | |
195a4ef6 MCC |
1179 | em28xx_videodbg("open minor=%d type=%s users=%d\n", |
1180 | minor,v4l2_type_names[dev->type],dev->users); | |
2d50f847 | 1181 | |
195a4ef6 | 1182 | fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL); |
9aeb4b05 | 1183 | |
195a4ef6 MCC |
1184 | if (!fh) { |
1185 | em28xx_errdev("em28xx-video.c: Out of memory?!\n"); | |
1186 | return -ENOMEM; | |
1187 | } | |
1188 | mutex_lock(&dev->lock); | |
1189 | fh->dev = dev; | |
1190 | filp->private_data = fh; | |
9aeb4b05 | 1191 | |
195a4ef6 MCC |
1192 | if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) { |
1193 | em28xx_set_alternate(dev); | |
2d50f847 | 1194 | |
195a4ef6 MCC |
1195 | dev->width = norm_maxw(dev); |
1196 | dev->height = norm_maxh(dev); | |
1197 | dev->frame_size = dev->width * dev->height * 2; | |
1198 | dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */ | |
1199 | dev->bytesperline = dev->width * 2; | |
1200 | dev->hscale = 0; | |
1201 | dev->vscale = 0; | |
2d50f847 | 1202 | |
195a4ef6 MCC |
1203 | em28xx_capture_start(dev, 1); |
1204 | em28xx_resolution_set(dev); | |
2d50f847 | 1205 | |
2d50f847 | 1206 | |
195a4ef6 MCC |
1207 | /* start the transfer */ |
1208 | errCode = em28xx_init_isoc(dev); | |
1209 | if (errCode) | |
1210 | goto err; | |
2d50f847 | 1211 | |
195a4ef6 | 1212 | em28xx_empty_framequeues(dev); |
2d50f847 MCC |
1213 | } |
1214 | ||
195a4ef6 | 1215 | dev->users++; |
2d50f847 | 1216 | |
195a4ef6 MCC |
1217 | err: |
1218 | mutex_unlock(&dev->lock); | |
1219 | return errCode; | |
2d50f847 | 1220 | } |
e5589bef | 1221 | |
a6c2ba28 | 1222 | /* |
195a4ef6 MCC |
1223 | * em28xx_realease_resources() |
1224 | * unregisters the v4l2,i2c and usb devices | |
1225 | * called when the device gets disconected or at module unload | |
1226 | */ | |
1227 | static void em28xx_release_resources(struct em28xx *dev) | |
a6c2ba28 | 1228 | { |
a6c2ba28 | 1229 | |
195a4ef6 | 1230 | /*FIXME: I2C IR should be disconnected */ |
a6c2ba28 | 1231 | |
195a4ef6 MCC |
1232 | em28xx_info("V4L2 devices /dev/video%d and /dev/vbi%d deregistered\n", |
1233 | dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN, | |
1234 | dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN); | |
1235 | list_del(&dev->devlist); | |
1236 | video_unregister_device(dev->vdev); | |
1237 | video_unregister_device(dev->vbi_dev); | |
1238 | em28xx_i2c_unregister(dev); | |
1239 | usb_put_dev(dev->udev); | |
a6c2ba28 | 1240 | |
a6c2ba28 | 1241 | |
195a4ef6 MCC |
1242 | /* Mark device as unused */ |
1243 | em28xx_devused&=~(1<<dev->devno); | |
1244 | } | |
a6c2ba28 | 1245 | |
195a4ef6 MCC |
1246 | /* |
1247 | * em28xx_v4l2_close() | |
1248 | * stops streaming and deallocates all resources allocated by the v4l2 calls and ioctls | |
1249 | */ | |
1250 | static int em28xx_v4l2_close(struct inode *inode, struct file *filp) | |
1251 | { | |
1252 | struct em28xx_fh *fh = filp->private_data; | |
1253 | struct em28xx *dev = fh->dev; | |
1254 | int errCode; | |
a6c2ba28 | 1255 | |
195a4ef6 | 1256 | em28xx_videodbg("users=%d\n", dev->users); |
a6c2ba28 | 1257 | |
a6c2ba28 | 1258 | |
195a4ef6 MCC |
1259 | if (res_check(fh)) |
1260 | res_free(fh); | |
a6c2ba28 | 1261 | |
195a4ef6 | 1262 | mutex_lock(&dev->lock); |
a6c2ba28 | 1263 | |
195a4ef6 MCC |
1264 | if (dev->users == 1) { |
1265 | em28xx_uninit_isoc(dev); | |
1266 | em28xx_release_buffers(dev); | |
1267 | dev->io = IO_NONE; | |
a6c2ba28 | 1268 | |
195a4ef6 MCC |
1269 | /* the device is already disconnect, |
1270 | free the remaining resources */ | |
1271 | if (dev->state & DEV_DISCONNECTED) { | |
1272 | em28xx_release_resources(dev); | |
1273 | mutex_unlock(&dev->lock); | |
1274 | kfree(dev); | |
1275 | return 0; | |
1276 | } | |
a6c2ba28 | 1277 | |
195a4ef6 MCC |
1278 | /* set alternate 0 */ |
1279 | dev->alt = 0; | |
1280 | em28xx_videodbg("setting alternate 0\n"); | |
1281 | errCode = usb_set_interface(dev->udev, 0, 0); | |
1282 | if (errCode < 0) { | |
1283 | em28xx_errdev("cannot change alternate number to " | |
1284 | "0 (error=%i)\n", errCode); | |
1285 | } | |
9aeb4b05 | 1286 | } |
195a4ef6 MCC |
1287 | kfree(fh); |
1288 | dev->users--; | |
1289 | wake_up_interruptible_nr(&dev->open, 1); | |
1290 | mutex_unlock(&dev->lock); | |
1291 | return 0; | |
1292 | } | |
a6c2ba28 | 1293 | |
195a4ef6 MCC |
1294 | /* |
1295 | * em28xx_v4l2_read() | |
1296 | * will allocate buffers when called for the first time | |
1297 | */ | |
1298 | static ssize_t | |
1299 | em28xx_v4l2_read(struct file *filp, char __user * buf, size_t count, | |
1300 | loff_t * f_pos) | |
1301 | { | |
1302 | struct em28xx_frame_t *f, *i; | |
1303 | unsigned long lock_flags; | |
1304 | int ret = 0; | |
1305 | struct em28xx_fh *fh = filp->private_data; | |
1306 | struct em28xx *dev = fh->dev; | |
a6c2ba28 | 1307 | |
195a4ef6 MCC |
1308 | /* FIXME: read() is not prepared to allow changing the video |
1309 | resolution while streaming. Seems a bug at em28xx_set_fmt | |
1310 | */ | |
a6c2ba28 | 1311 | |
195a4ef6 MCC |
1312 | if (unlikely(res_get(fh) < 0)) |
1313 | return -EBUSY; | |
9aeb4b05 | 1314 | |
195a4ef6 | 1315 | mutex_lock(&dev->lock); |
a6c2ba28 | 1316 | |
195a4ef6 MCC |
1317 | if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1318 | em28xx_videodbg("V4l2_Buf_type_videocapture is set\n"); | |
1319 | ||
1320 | if (dev->type == V4L2_BUF_TYPE_VBI_CAPTURE) { | |
1321 | em28xx_videodbg("V4L2_BUF_TYPE_VBI_CAPTURE is set\n"); | |
1322 | em28xx_videodbg("not supported yet! ...\n"); | |
1323 | if (copy_to_user(buf, "", 1)) { | |
1324 | mutex_unlock(&dev->lock); | |
1325 | return -EFAULT; | |
9aeb4b05 | 1326 | } |
5a80415b | 1327 | mutex_unlock(&dev->lock); |
195a4ef6 | 1328 | return (1); |
9aeb4b05 | 1329 | } |
195a4ef6 MCC |
1330 | if (dev->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) { |
1331 | em28xx_videodbg("V4L2_BUF_TYPE_SLICED_VBI_CAPTURE is set\n"); | |
1332 | em28xx_videodbg("not supported yet! ...\n"); | |
1333 | if (copy_to_user(buf, "", 1)) { | |
5a80415b | 1334 | mutex_unlock(&dev->lock); |
195a4ef6 | 1335 | return -EFAULT; |
9aeb4b05 | 1336 | } |
5a80415b | 1337 | mutex_unlock(&dev->lock); |
195a4ef6 | 1338 | return (1); |
9aeb4b05 | 1339 | } |
a6c2ba28 | 1340 | |
195a4ef6 MCC |
1341 | if (dev->state & DEV_DISCONNECTED) { |
1342 | em28xx_videodbg("device not present\n"); | |
1343 | mutex_unlock(&dev->lock); | |
1344 | return -ENODEV; | |
1345 | } | |
a6c2ba28 | 1346 | |
195a4ef6 MCC |
1347 | if (dev->state & DEV_MISCONFIGURED) { |
1348 | em28xx_videodbg("device misconfigured; close and open it again\n"); | |
3593cab5 | 1349 | mutex_unlock(&dev->lock); |
195a4ef6 | 1350 | return -EIO; |
9aeb4b05 | 1351 | } |
a6c2ba28 | 1352 | |
195a4ef6 MCC |
1353 | if (dev->io == IO_MMAP) { |
1354 | em28xx_videodbg ("IO method is set to mmap; close and open" | |
1355 | " the device again to choose the read method\n"); | |
3593cab5 | 1356 | mutex_unlock(&dev->lock); |
195a4ef6 | 1357 | return -EINVAL; |
9aeb4b05 | 1358 | } |
a6c2ba28 | 1359 | |
195a4ef6 MCC |
1360 | if (dev->io == IO_NONE) { |
1361 | if (!em28xx_request_buffers(dev, EM28XX_NUM_READ_FRAMES)) { | |
1362 | em28xx_errdev("read failed, not enough memory\n"); | |
1363 | mutex_unlock(&dev->lock); | |
1364 | return -ENOMEM; | |
1365 | } | |
1366 | dev->io = IO_READ; | |
1367 | dev->stream = STREAM_ON; | |
1368 | em28xx_queue_unusedframes(dev); | |
9aeb4b05 | 1369 | } |
a6c2ba28 | 1370 | |
195a4ef6 | 1371 | if (!count) { |
3593cab5 | 1372 | mutex_unlock(&dev->lock); |
9aeb4b05 MCC |
1373 | return 0; |
1374 | } | |
a6c2ba28 | 1375 | |
195a4ef6 MCC |
1376 | if (list_empty(&dev->outqueue)) { |
1377 | if (filp->f_flags & O_NONBLOCK) { | |
1378 | mutex_unlock(&dev->lock); | |
1379 | return -EAGAIN; | |
1380 | } | |
1381 | ret = wait_event_interruptible | |
1382 | (dev->wait_frame, | |
1383 | (!list_empty(&dev->outqueue)) || | |
1384 | (dev->state & DEV_DISCONNECTED)); | |
1385 | if (ret) { | |
1386 | mutex_unlock(&dev->lock); | |
1387 | return ret; | |
1388 | } | |
1389 | if (dev->state & DEV_DISCONNECTED) { | |
1390 | mutex_unlock(&dev->lock); | |
1391 | return -ENODEV; | |
1392 | } | |
1393 | dev->video_bytesread = 0; | |
9aeb4b05 | 1394 | } |
a6c2ba28 | 1395 | |
195a4ef6 | 1396 | f = list_entry(dev->outqueue.prev, struct em28xx_frame_t, frame); |
a6c2ba28 | 1397 | |
195a4ef6 | 1398 | em28xx_queue_unusedframes(dev); |
a225452e | 1399 | |
195a4ef6 MCC |
1400 | if (count > f->buf.length) |
1401 | count = f->buf.length; | |
a6c2ba28 | 1402 | |
195a4ef6 MCC |
1403 | if ((dev->video_bytesread + count) > dev->frame_size) |
1404 | count = dev->frame_size - dev->video_bytesread; | |
a6c2ba28 | 1405 | |
195a4ef6 MCC |
1406 | if (copy_to_user(buf, f->bufmem+dev->video_bytesread, count)) { |
1407 | em28xx_err("Error while copying to user\n"); | |
1408 | return -EFAULT; | |
9aeb4b05 | 1409 | } |
195a4ef6 | 1410 | dev->video_bytesread += count; |
a6c2ba28 | 1411 | |
195a4ef6 MCC |
1412 | if (dev->video_bytesread == dev->frame_size) { |
1413 | spin_lock_irqsave(&dev->queue_lock, lock_flags); | |
1414 | list_for_each_entry(i, &dev->outqueue, frame) | |
1415 | i->state = F_UNUSED; | |
1416 | INIT_LIST_HEAD(&dev->outqueue); | |
1417 | spin_unlock_irqrestore(&dev->queue_lock, lock_flags); | |
a6c2ba28 | 1418 | |
195a4ef6 MCC |
1419 | em28xx_queue_unusedframes(dev); |
1420 | dev->video_bytesread = 0; | |
1421 | } | |
a3a048ce | 1422 | |
195a4ef6 | 1423 | *f_pos += count; |
9aeb4b05 | 1424 | |
195a4ef6 MCC |
1425 | mutex_unlock(&dev->lock); |
1426 | ||
1427 | return count; | |
a6c2ba28 | 1428 | } |
1429 | ||
1430 | /* | |
195a4ef6 MCC |
1431 | * em28xx_v4l2_poll() |
1432 | * will allocate buffers when called for the first time | |
a6c2ba28 | 1433 | */ |
195a4ef6 | 1434 | static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table * wait) |
a6c2ba28 | 1435 | { |
195a4ef6 | 1436 | unsigned int mask = 0; |
a3a048ce | 1437 | struct em28xx_fh *fh = filp->private_data; |
195a4ef6 | 1438 | struct em28xx *dev = fh->dev; |
a6c2ba28 | 1439 | |
195a4ef6 MCC |
1440 | if (unlikely(res_get(fh) < 0)) |
1441 | return POLLERR; | |
a6c2ba28 | 1442 | |
195a4ef6 | 1443 | mutex_lock(&dev->lock); |
a6c2ba28 | 1444 | |
195a4ef6 MCC |
1445 | if (dev->state & DEV_DISCONNECTED) { |
1446 | em28xx_videodbg("device not present\n"); | |
1447 | } else if (dev->state & DEV_MISCONFIGURED) { | |
1448 | em28xx_videodbg("device is misconfigured; close and open it again\n"); | |
1449 | } else { | |
1450 | if (dev->io == IO_NONE) { | |
1451 | if (!em28xx_request_buffers | |
1452 | (dev, EM28XX_NUM_READ_FRAMES)) { | |
1453 | em28xx_warn | |
1454 | ("poll() failed, not enough memory\n"); | |
1455 | } else { | |
1456 | dev->io = IO_READ; | |
1457 | dev->stream = STREAM_ON; | |
1458 | } | |
1459 | } | |
a6c2ba28 | 1460 | |
195a4ef6 MCC |
1461 | if (dev->io == IO_READ) { |
1462 | em28xx_queue_unusedframes(dev); | |
1463 | poll_wait(filp, &dev->wait_frame, wait); | |
a6c2ba28 | 1464 | |
195a4ef6 MCC |
1465 | if (!list_empty(&dev->outqueue)) |
1466 | mask |= POLLIN | POLLRDNORM; | |
a6c2ba28 | 1467 | |
195a4ef6 | 1468 | mutex_unlock(&dev->lock); |
a6c2ba28 | 1469 | |
195a4ef6 | 1470 | return mask; |
9aeb4b05 | 1471 | } |
195a4ef6 | 1472 | } |
a6c2ba28 | 1473 | |
195a4ef6 MCC |
1474 | mutex_unlock(&dev->lock); |
1475 | return POLLERR; | |
1476 | } | |
a6c2ba28 | 1477 | |
195a4ef6 MCC |
1478 | /* |
1479 | * em28xx_v4l2_mmap() | |
1480 | */ | |
1481 | static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma) | |
1482 | { | |
1483 | struct em28xx_fh *fh = filp->private_data; | |
1484 | struct em28xx *dev = fh->dev; | |
1485 | unsigned long size = vma->vm_end - vma->vm_start; | |
1486 | unsigned long start = vma->vm_start; | |
1487 | void *pos; | |
1488 | u32 i; | |
a6c2ba28 | 1489 | |
195a4ef6 MCC |
1490 | if (unlikely(res_get(fh) < 0)) |
1491 | return -EBUSY; | |
a6c2ba28 | 1492 | |
195a4ef6 | 1493 | mutex_lock(&dev->lock); |
a6c2ba28 | 1494 | |
195a4ef6 MCC |
1495 | if (dev->state & DEV_DISCONNECTED) { |
1496 | em28xx_videodbg("mmap: device not present\n"); | |
5a80415b | 1497 | mutex_unlock(&dev->lock); |
195a4ef6 | 1498 | return -ENODEV; |
9aeb4b05 | 1499 | } |
a6c2ba28 | 1500 | |
195a4ef6 MCC |
1501 | if (dev->state & DEV_MISCONFIGURED) { |
1502 | em28xx_videodbg ("mmap: Device is misconfigured; close and " | |
1503 | "open it again\n"); | |
1504 | mutex_unlock(&dev->lock); | |
1505 | return -EIO; | |
9aeb4b05 | 1506 | } |
a6c2ba28 | 1507 | |
195a4ef6 MCC |
1508 | if (dev->io != IO_MMAP || !(vma->vm_flags & VM_WRITE)) { |
1509 | mutex_unlock(&dev->lock); | |
1510 | return -EINVAL; | |
9aeb4b05 | 1511 | } |
a6c2ba28 | 1512 | |
195a4ef6 MCC |
1513 | if (size > PAGE_ALIGN(dev->frame[0].buf.length)) |
1514 | size = PAGE_ALIGN(dev->frame[0].buf.length); | |
a6c2ba28 | 1515 | |
195a4ef6 MCC |
1516 | for (i = 0; i < dev->num_frames; i++) { |
1517 | if ((dev->frame[i].buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff) | |
1518 | break; | |
9aeb4b05 | 1519 | } |
195a4ef6 MCC |
1520 | if (i == dev->num_frames) { |
1521 | em28xx_videodbg("mmap: user supplied mapping address is out of range\n"); | |
1522 | mutex_unlock(&dev->lock); | |
1523 | return -EINVAL; | |
a6c2ba28 | 1524 | } |
a6c2ba28 | 1525 | |
195a4ef6 MCC |
1526 | /* VM_IO is eventually going to replace PageReserved altogether */ |
1527 | vma->vm_flags |= VM_IO; | |
1528 | vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */ | |
a6c2ba28 | 1529 | |
195a4ef6 MCC |
1530 | pos = dev->frame[i].bufmem; |
1531 | while (size > 0) { /* size is page-aligned */ | |
1532 | if (vm_insert_page(vma, start, vmalloc_to_page(pos))) { | |
1533 | em28xx_videodbg("mmap: vm_insert_page failed\n"); | |
1534 | mutex_unlock(&dev->lock); | |
1535 | return -EAGAIN; | |
1536 | } | |
1537 | start += PAGE_SIZE; | |
1538 | pos += PAGE_SIZE; | |
1539 | size -= PAGE_SIZE; | |
a6c2ba28 | 1540 | } |
1541 | ||
195a4ef6 MCC |
1542 | vma->vm_ops = &em28xx_vm_ops; |
1543 | vma->vm_private_data = &dev->frame[i]; | |
a6c2ba28 | 1544 | |
195a4ef6 MCC |
1545 | em28xx_vm_open(vma); |
1546 | mutex_unlock(&dev->lock); | |
1547 | return 0; | |
a6c2ba28 | 1548 | } |
1549 | ||
fa027c2a | 1550 | static const struct file_operations em28xx_v4l_fops = { |
195a4ef6 MCC |
1551 | .owner = THIS_MODULE, |
1552 | .open = em28xx_v4l2_open, | |
1553 | .release = em28xx_v4l2_close, | |
1554 | .read = em28xx_v4l2_read, | |
1555 | .poll = em28xx_v4l2_poll, | |
1556 | .mmap = em28xx_v4l2_mmap, | |
1557 | .ioctl = video_ioctl2, | |
1558 | .llseek = no_llseek, | |
1559 | .compat_ioctl = v4l_compat_ioctl32, | |
1560 | }; | |
17cbe2e5 | 1561 | |
195a4ef6 MCC |
1562 | static const struct video_device em28xx_video_template = { |
1563 | .fops = &em28xx_v4l_fops, | |
1564 | .release = video_device_release, | |
1565 | ||
1566 | .minor = -1, | |
1567 | .vidioc_querycap = vidioc_querycap, | |
1568 | .vidioc_enum_fmt_cap = vidioc_enum_fmt_cap, | |
1569 | .vidioc_g_fmt_cap = vidioc_g_fmt_cap, | |
1570 | .vidioc_try_fmt_cap = vidioc_try_fmt_cap, | |
1571 | .vidioc_s_fmt_cap = vidioc_s_fmt_cap, | |
1572 | .vidioc_g_audio = vidioc_g_audio, | |
1573 | .vidioc_s_audio = vidioc_s_audio, | |
1574 | .vidioc_cropcap = vidioc_cropcap, | |
1575 | ||
1576 | .vidioc_g_fmt_vbi_capture = vidioc_g_fmt_vbi_capture, | |
1577 | .vidioc_try_fmt_vbi_capture = vidioc_try_set_vbi_capture, | |
1578 | .vidioc_s_fmt_vbi_capture = vidioc_try_set_vbi_capture, | |
1579 | ||
1580 | .vidioc_reqbufs = vidioc_reqbufs, | |
1581 | .vidioc_querybuf = vidioc_querybuf, | |
1582 | .vidioc_qbuf = vidioc_qbuf, | |
1583 | .vidioc_dqbuf = vidioc_dqbuf, | |
1584 | .vidioc_s_std = vidioc_s_std, | |
1585 | .vidioc_enum_input = vidioc_enum_input, | |
1586 | .vidioc_g_input = vidioc_g_input, | |
1587 | .vidioc_s_input = vidioc_s_input, | |
1588 | .vidioc_queryctrl = vidioc_queryctrl, | |
1589 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
1590 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
1591 | .vidioc_streamon = vidioc_streamon, | |
1592 | .vidioc_streamoff = vidioc_streamoff, | |
1593 | .vidioc_g_tuner = vidioc_g_tuner, | |
1594 | .vidioc_s_tuner = vidioc_s_tuner, | |
1595 | .vidioc_g_frequency = vidioc_g_frequency, | |
1596 | .vidioc_s_frequency = vidioc_s_frequency, | |
1597 | ||
1598 | .tvnorms = V4L2_STD_ALL, | |
7d497f8a | 1599 | .current_norm = V4L2_STD_PAL, |
a6c2ba28 | 1600 | }; |
1601 | ||
1602 | /******************************** usb interface *****************************************/ | |
1603 | ||
6d79468d MCC |
1604 | |
1605 | static LIST_HEAD(em28xx_extension_devlist); | |
1606 | static DEFINE_MUTEX(em28xx_extension_devlist_lock); | |
1607 | ||
1608 | int em28xx_register_extension(struct em28xx_ops *ops) | |
1609 | { | |
1610 | struct em28xx *h, *dev = NULL; | |
1611 | ||
1612 | list_for_each_entry(h, &em28xx_devlist, devlist) | |
1613 | dev = h; | |
1614 | ||
1615 | mutex_lock(&em28xx_extension_devlist_lock); | |
1616 | list_add_tail(&ops->next, &em28xx_extension_devlist); | |
1617 | if (dev) | |
1618 | ops->init(dev); | |
1619 | ||
1620 | printk(KERN_INFO "Em28xx: Initialized (%s) extension\n", ops->name); | |
1621 | mutex_unlock(&em28xx_extension_devlist_lock); | |
1622 | ||
1623 | return 0; | |
1624 | } | |
1625 | EXPORT_SYMBOL(em28xx_register_extension); | |
1626 | ||
1627 | void em28xx_unregister_extension(struct em28xx_ops *ops) | |
1628 | { | |
1629 | struct em28xx *h, *dev = NULL; | |
1630 | ||
1631 | list_for_each_entry(h, &em28xx_devlist, devlist) | |
1632 | dev = h; | |
1633 | ||
1634 | if (dev) | |
1635 | ops->fini(dev); | |
1636 | ||
1637 | mutex_lock(&em28xx_extension_devlist_lock); | |
1638 | printk(KERN_INFO "Em28xx: Removed (%s) extension\n", ops->name); | |
1639 | list_del(&ops->next); | |
1640 | mutex_unlock(&em28xx_extension_devlist_lock); | |
1641 | } | |
1642 | EXPORT_SYMBOL(em28xx_unregister_extension); | |
1643 | ||
a6c2ba28 | 1644 | /* |
3acf2809 | 1645 | * em28xx_init_dev() |
a6c2ba28 | 1646 | * allocates and inits the device structs, registers i2c bus and v4l device |
1647 | */ | |
3acf2809 | 1648 | static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev, |
03910cc3 | 1649 | int minor) |
a6c2ba28 | 1650 | { |
6d79468d | 1651 | struct em28xx_ops *ops = NULL; |
3acf2809 | 1652 | struct em28xx *dev = *devhandle; |
a6c2ba28 | 1653 | int retval = -ENOMEM; |
7d497f8a | 1654 | int errCode; |
a6c2ba28 | 1655 | unsigned int maxh, maxw; |
a6c2ba28 | 1656 | |
a6c2ba28 | 1657 | dev->udev = udev; |
3593cab5 | 1658 | mutex_init(&dev->lock); |
a3a048ce | 1659 | spin_lock_init(&dev->queue_lock); |
a6c2ba28 | 1660 | init_waitqueue_head(&dev->open); |
a3a048ce MCC |
1661 | init_waitqueue_head(&dev->wait_frame); |
1662 | init_waitqueue_head(&dev->wait_stream); | |
a6c2ba28 | 1663 | |
3acf2809 MCC |
1664 | dev->em28xx_write_regs = em28xx_write_regs; |
1665 | dev->em28xx_read_reg = em28xx_read_reg; | |
1666 | dev->em28xx_read_reg_req_len = em28xx_read_reg_req_len; | |
1667 | dev->em28xx_write_regs_req = em28xx_write_regs_req; | |
1668 | dev->em28xx_read_reg_req = em28xx_read_reg_req; | |
fad7b958 | 1669 | dev->is_em2800 = em28xx_boards[dev->model].is_em2800; |
a6c2ba28 | 1670 | |
d7448a8d MCC |
1671 | errCode = em28xx_read_reg(dev, CHIPID_REG); |
1672 | if (errCode >= 0) | |
1673 | em28xx_info("em28xx chip ID = %d\n", errCode); | |
1674 | ||
a94e95b4 | 1675 | em28xx_pre_card_setup(dev); |
03910cc3 | 1676 | |
3acf2809 | 1677 | errCode = em28xx_config(dev); |
a6c2ba28 | 1678 | if (errCode) { |
3acf2809 | 1679 | em28xx_errdev("error configuring device\n"); |
03910cc3 | 1680 | em28xx_devused &= ~(1<<dev->devno); |
7c908fbb | 1681 | kfree(dev); |
a6c2ba28 | 1682 | return -ENOMEM; |
1683 | } | |
1684 | ||
a6c2ba28 | 1685 | /* register i2c bus */ |
3acf2809 | 1686 | em28xx_i2c_register(dev); |
a6c2ba28 | 1687 | |
1688 | /* Do board specific init and eeprom reading */ | |
3acf2809 | 1689 | em28xx_card_setup(dev); |
a6c2ba28 | 1690 | |
1691 | /* configure the device */ | |
3acf2809 | 1692 | em28xx_config_i2c(dev); |
a6c2ba28 | 1693 | |
7d497f8a MCC |
1694 | /* set default norm */ |
1695 | dev->norm = em28xx_video_template.current_norm; | |
03910cc3 MCC |
1696 | |
1697 | maxw = norm_maxw(dev); | |
1698 | maxh = norm_maxh(dev); | |
1699 | ||
1700 | /* set default image size */ | |
1701 | dev->width = maxw; | |
1702 | dev->height = maxh; | |
1703 | dev->interlaced = EM28XX_INTERLACED_DEFAULT; | |
1704 | dev->field_size = dev->width * dev->height; | |
1705 | dev->frame_size = | |
1706 | dev->interlaced ? dev->field_size << 1 : dev->field_size; | |
1707 | dev->bytesperline = dev->width * 2; | |
1708 | dev->hscale = 0; | |
1709 | dev->vscale = 0; | |
1710 | dev->ctl_input = 2; | |
1711 | ||
3acf2809 | 1712 | errCode = em28xx_config(dev); |
a6c2ba28 | 1713 | |
195a4ef6 | 1714 | /* allocate and fill video video_device struct */ |
a6c2ba28 | 1715 | dev->vdev = video_device_alloc(); |
1716 | if (NULL == dev->vdev) { | |
3acf2809 | 1717 | em28xx_errdev("cannot allocate video_device.\n"); |
e5589bef | 1718 | em28xx_devused&=~(1<<dev->devno); |
7c908fbb | 1719 | kfree(dev); |
e5589bef MCC |
1720 | return -ENOMEM; |
1721 | } | |
195a4ef6 MCC |
1722 | memcpy(dev->vdev, &em28xx_video_template, |
1723 | sizeof(em28xx_video_template)); | |
1724 | dev->vdev->type = VID_TYPE_CAPTURE; | |
1725 | if (dev->has_tuner) | |
1726 | dev->vdev->type |= VID_TYPE_TUNER; | |
1727 | dev->vdev->dev = &dev->udev->dev; | |
1728 | snprintf(dev->vdev->name, sizeof(dev->vbi_dev->name), | |
1729 | "%s#%d %s", "em28xx", dev->devno, "video"); | |
e5589bef | 1730 | |
195a4ef6 | 1731 | /* Allocate and fill vbi video_device struct */ |
e5589bef MCC |
1732 | dev->vbi_dev = video_device_alloc(); |
1733 | if (NULL == dev->vbi_dev) { | |
1734 | em28xx_errdev("cannot allocate video_device.\n"); | |
1735 | kfree(dev->vdev); | |
e5589bef | 1736 | em28xx_devused&=~(1<<dev->devno); |
7c908fbb | 1737 | kfree(dev); |
a6c2ba28 | 1738 | return -ENOMEM; |
1739 | } | |
195a4ef6 MCC |
1740 | memcpy(dev->vbi_dev, &em28xx_video_template, |
1741 | sizeof(em28xx_video_template)); | |
e5589bef | 1742 | dev->vbi_dev->type = VFL_TYPE_VBI; |
e5589bef | 1743 | dev->vbi_dev->dev = &dev->udev->dev; |
195a4ef6 MCC |
1744 | snprintf(dev->vbi_dev->name, sizeof(dev->vbi_dev->name), |
1745 | "%s#%d %s", "em28xx", dev->devno, "vbi"); | |
e5589bef | 1746 | |
3acf2809 | 1747 | list_add_tail(&dev->devlist,&em28xx_devlist); |
a6c2ba28 | 1748 | |
5a80415b SS |
1749 | if (dev->has_msp34xx) { |
1750 | /* Send a reset to other chips via gpio */ | |
1751 | em28xx_write_regs_req(dev, 0x00, 0x08, "\xf7", 1); | |
1752 | msleep(3); | |
1753 | em28xx_write_regs_req(dev, 0x00, 0x08, "\xff", 1); | |
1754 | msleep(3); | |
5a80415b | 1755 | } |
195a4ef6 | 1756 | |
5a80415b SS |
1757 | video_mux(dev, 0); |
1758 | ||
195a4ef6 | 1759 | /* register v4l2 video video_device */ |
e5589bef MCC |
1760 | if ((retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER, |
1761 | video_nr[dev->devno]))) { | |
3acf2809 | 1762 | em28xx_errdev("unable to register video device (error=%i).\n", |
a6c2ba28 | 1763 | retval); |
3593cab5 | 1764 | mutex_unlock(&dev->lock); |
9c75541f | 1765 | list_del(&dev->devlist); |
a6c2ba28 | 1766 | video_device_release(dev->vdev); |
e5589bef | 1767 | em28xx_devused&=~(1<<dev->devno); |
7c908fbb | 1768 | kfree(dev); |
a6c2ba28 | 1769 | return -ENODEV; |
1770 | } | |
e5589bef | 1771 | |
195a4ef6 | 1772 | /* register v4l2 vbi video_device */ |
e5589bef MCC |
1773 | if (video_register_device(dev->vbi_dev, VFL_TYPE_VBI, |
1774 | vbi_nr[dev->devno]) < 0) { | |
1775 | printk("unable to register vbi device\n"); | |
3593cab5 | 1776 | mutex_unlock(&dev->lock); |
e5589bef MCC |
1777 | list_del(&dev->devlist); |
1778 | video_device_release(dev->vbi_dev); | |
1779 | video_device_release(dev->vdev); | |
e5589bef | 1780 | em28xx_devused&=~(1<<dev->devno); |
7c908fbb | 1781 | kfree(dev); |
e5589bef | 1782 | return -ENODEV; |
e5589bef MCC |
1783 | } |
1784 | ||
e5589bef MCC |
1785 | em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n", |
1786 | dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN, | |
1787 | dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN); | |
a6c2ba28 | 1788 | |
6d79468d MCC |
1789 | mutex_lock(&em28xx_extension_devlist_lock); |
1790 | if (!list_empty(&em28xx_extension_devlist)) { | |
1791 | list_for_each_entry(ops, &em28xx_extension_devlist, next) { | |
1792 | if (ops->id) | |
1793 | ops->init(dev); | |
1794 | } | |
1795 | } | |
1796 | mutex_unlock(&em28xx_extension_devlist_lock); | |
1797 | ||
a6c2ba28 | 1798 | return 0; |
1799 | } | |
1800 | ||
d7448a8d MCC |
1801 | #if defined(CONFIG_MODULES) && defined(MODULE) |
1802 | static void request_module_async(struct work_struct *work) | |
1803 | { | |
1804 | struct em28xx *dev = container_of(work, | |
1805 | struct em28xx, request_module_wk); | |
1806 | ||
1807 | if (!dev->has_audio_class) | |
1808 | request_module("em28xx-alsa"); | |
1809 | } | |
1810 | ||
1811 | static void request_modules(struct em28xx *dev) | |
1812 | { | |
1813 | INIT_WORK(&dev->request_module_wk, request_module_async); | |
1814 | schedule_work(&dev->request_module_wk); | |
1815 | } | |
1816 | #else | |
1817 | #define request_modules(dev) | |
1818 | #endif /* CONFIG_MODULES */ | |
1819 | ||
a6c2ba28 | 1820 | /* |
3acf2809 | 1821 | * em28xx_usb_probe() |
a6c2ba28 | 1822 | * checks for supported devices |
1823 | */ | |
3acf2809 | 1824 | static int em28xx_usb_probe(struct usb_interface *interface, |
a6c2ba28 | 1825 | const struct usb_device_id *id) |
1826 | { | |
1827 | const struct usb_endpoint_descriptor *endpoint; | |
1828 | struct usb_device *udev; | |
9d4d9c05 | 1829 | struct usb_interface *uif; |
3acf2809 | 1830 | struct em28xx *dev = NULL; |
a6c2ba28 | 1831 | int retval = -ENODEV; |
03910cc3 | 1832 | int i, nr, ifnum; |
a6c2ba28 | 1833 | |
1834 | udev = usb_get_dev(interface_to_usbdev(interface)); | |
d5e52653 MCC |
1835 | ifnum = interface->altsetting[0].desc.bInterfaceNumber; |
1836 | ||
e5589bef MCC |
1837 | /* Check to see next free device and mark as used */ |
1838 | nr=find_first_zero_bit(&em28xx_devused,EM28XX_MAXBOARDS); | |
1839 | em28xx_devused|=1<<nr; | |
a6c2ba28 | 1840 | |
596d92d5 | 1841 | /* Don't register audio interfaces */ |
91cad0f2 | 1842 | if (interface->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) { |
3acf2809 | 1843 | em28xx_err(DRIVER_NAME " audio device (%04x:%04x): interface %i, class %i\n", |
91cad0f2 MCC |
1844 | udev->descriptor.idVendor,udev->descriptor.idProduct, |
1845 | ifnum, | |
1846 | interface->altsetting[0].desc.bInterfaceClass); | |
e5589bef MCC |
1847 | |
1848 | em28xx_devused&=~(1<<nr); | |
596d92d5 | 1849 | return -ENODEV; |
91cad0f2 MCC |
1850 | } |
1851 | ||
3acf2809 | 1852 | em28xx_err(DRIVER_NAME " new video device (%04x:%04x): interface %i, class %i\n", |
91cad0f2 MCC |
1853 | udev->descriptor.idVendor,udev->descriptor.idProduct, |
1854 | ifnum, | |
1855 | interface->altsetting[0].desc.bInterfaceClass); | |
596d92d5 | 1856 | |
d5e52653 MCC |
1857 | endpoint = &interface->cur_altsetting->endpoint[1].desc; |
1858 | ||
59c51591 | 1859 | /* check if the device has the iso in endpoint at the correct place */ |
a6c2ba28 | 1860 | if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != |
1861 | USB_ENDPOINT_XFER_ISOC) { | |
3acf2809 | 1862 | em28xx_err(DRIVER_NAME " probing error: endpoint is non-ISO endpoint!\n"); |
e5589bef | 1863 | em28xx_devused&=~(1<<nr); |
a6c2ba28 | 1864 | return -ENODEV; |
1865 | } | |
1866 | if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) { | |
3acf2809 | 1867 | em28xx_err(DRIVER_NAME " probing error: endpoint is ISO OUT endpoint!\n"); |
e5589bef | 1868 | em28xx_devused&=~(1<<nr); |
a6c2ba28 | 1869 | return -ENODEV; |
1870 | } | |
1871 | ||
19478843 | 1872 | if (nr >= EM28XX_MAXBOARDS) { |
9d4d9c05 | 1873 | printk (DRIVER_NAME ": Supports only %i em28xx boards.\n",EM28XX_MAXBOARDS); |
e5589bef | 1874 | em28xx_devused&=~(1<<nr); |
596d92d5 MCC |
1875 | return -ENOMEM; |
1876 | } | |
1877 | ||
1878 | /* allocate memory for our device state and initialize it */ | |
7408187d | 1879 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
596d92d5 | 1880 | if (dev == NULL) { |
3acf2809 | 1881 | em28xx_err(DRIVER_NAME ": out of memory!\n"); |
e5589bef | 1882 | em28xx_devused&=~(1<<nr); |
596d92d5 MCC |
1883 | return -ENOMEM; |
1884 | } | |
596d92d5 | 1885 | |
e5589bef | 1886 | snprintf(dev->name, 29, "em28xx #%d", nr); |
03910cc3 MCC |
1887 | dev->devno = nr; |
1888 | dev->model = id->driver_info; | |
e5589bef | 1889 | |
d7448a8d MCC |
1890 | /* Checks if audio is provided by some interface */ |
1891 | for (i = 0; i < udev->config->desc.bNumInterfaces; i++) { | |
1892 | uif = udev->config->interface[i]; | |
1893 | if (uif->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) { | |
1894 | dev->has_audio_class = 1; | |
1895 | break; | |
1896 | } | |
1897 | } | |
1898 | ||
1899 | printk(KERN_INFO DRIVER_NAME " %s usb audio class\n", | |
1900 | dev->has_audio_class ? "Has" : "Doesn't have"); | |
1901 | ||
9d4d9c05 MCC |
1902 | /* compute alternate max packet sizes */ |
1903 | uif = udev->actconfig->interface[0]; | |
1904 | ||
1905 | dev->num_alt=uif->num_altsetting; | |
e5589bef | 1906 | em28xx_info("Alternate settings: %i\n",dev->num_alt); |
9d4d9c05 MCC |
1907 | // dev->alt_max_pkt_size = kmalloc(sizeof(*dev->alt_max_pkt_size)* |
1908 | dev->alt_max_pkt_size = kmalloc(32* | |
1909 | dev->num_alt,GFP_KERNEL); | |
1910 | if (dev->alt_max_pkt_size == NULL) { | |
e5589bef MCC |
1911 | em28xx_errdev("out of memory!\n"); |
1912 | em28xx_devused&=~(1<<nr); | |
1207cf84 | 1913 | kfree(dev); |
9d4d9c05 MCC |
1914 | return -ENOMEM; |
1915 | } | |
1916 | ||
1917 | for (i = 0; i < dev->num_alt ; i++) { | |
1918 | u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc. | |
1919 | wMaxPacketSize); | |
1920 | dev->alt_max_pkt_size[i] = | |
1921 | (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1); | |
e5589bef | 1922 | em28xx_info("Alternate setting %i, max size= %i\n",i, |
9d4d9c05 MCC |
1923 | dev->alt_max_pkt_size[i]); |
1924 | } | |
1925 | ||
3acf2809 | 1926 | if ((card[nr]>=0)&&(card[nr]<em28xx_bcount)) |
03910cc3 | 1927 | dev->model = card[nr]; |
596d92d5 | 1928 | |
a6c2ba28 | 1929 | /* allocate device struct */ |
03910cc3 | 1930 | retval = em28xx_init_dev(&dev, udev, nr); |
a6c2ba28 | 1931 | if (retval) |
1932 | return retval; | |
1933 | ||
03910cc3 | 1934 | em28xx_info("Found %s\n", em28xx_boards[dev->model].name); |
a6c2ba28 | 1935 | |
1936 | /* save our data pointer in this interface device */ | |
1937 | usb_set_intfdata(interface, dev); | |
d7448a8d MCC |
1938 | |
1939 | request_modules(dev); | |
1940 | ||
a6c2ba28 | 1941 | return 0; |
1942 | } | |
1943 | ||
1944 | /* | |
3acf2809 | 1945 | * em28xx_usb_disconnect() |
a6c2ba28 | 1946 | * called when the device gets diconencted |
1947 | * video device will be unregistered on v4l2_close in case it is still open | |
1948 | */ | |
3acf2809 | 1949 | static void em28xx_usb_disconnect(struct usb_interface *interface) |
a6c2ba28 | 1950 | { |
5a80415b | 1951 | struct em28xx *dev; |
6d79468d | 1952 | struct em28xx_ops *ops = NULL; |
5a80415b SS |
1953 | |
1954 | dev = usb_get_intfdata(interface); | |
a6c2ba28 | 1955 | usb_set_intfdata(interface, NULL); |
1956 | ||
1957 | if (!dev) | |
1958 | return; | |
1959 | ||
5a80415b | 1960 | em28xx_info("disconnecting %s\n", dev->vdev->name); |
a6c2ba28 | 1961 | |
5a80415b | 1962 | /* wait until all current v4l2 io is finished then deallocate resources */ |
3593cab5 | 1963 | mutex_lock(&dev->lock); |
a6c2ba28 | 1964 | |
a6c2ba28 | 1965 | wake_up_interruptible_all(&dev->open); |
1966 | ||
1967 | if (dev->users) { | |
3acf2809 | 1968 | em28xx_warn |
a6c2ba28 | 1969 | ("device /dev/video%d is open! Deregistration and memory " |
e5589bef MCC |
1970 | "deallocation are deferred on close.\n", |
1971 | dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN); | |
1972 | ||
a6c2ba28 | 1973 | dev->state |= DEV_MISCONFIGURED; |
3acf2809 | 1974 | em28xx_uninit_isoc(dev); |
a6c2ba28 | 1975 | dev->state |= DEV_DISCONNECTED; |
1976 | wake_up_interruptible(&dev->wait_frame); | |
1977 | wake_up_interruptible(&dev->wait_stream); | |
1978 | } else { | |
1979 | dev->state |= DEV_DISCONNECTED; | |
3acf2809 | 1980 | em28xx_release_resources(dev); |
a6c2ba28 | 1981 | } |
3593cab5 | 1982 | mutex_unlock(&dev->lock); |
a6c2ba28 | 1983 | |
6d79468d MCC |
1984 | mutex_lock(&em28xx_extension_devlist_lock); |
1985 | if (!list_empty(&em28xx_extension_devlist)) { | |
1986 | list_for_each_entry(ops, &em28xx_extension_devlist, next) { | |
1987 | ops->fini(dev); | |
1988 | } | |
1989 | } | |
1990 | mutex_unlock(&em28xx_extension_devlist_lock); | |
1991 | ||
9d4d9c05 MCC |
1992 | if (!dev->users) { |
1993 | kfree(dev->alt_max_pkt_size); | |
a6c2ba28 | 1994 | kfree(dev); |
9d4d9c05 | 1995 | } |
a6c2ba28 | 1996 | } |
1997 | ||
3acf2809 | 1998 | static struct usb_driver em28xx_usb_driver = { |
3acf2809 MCC |
1999 | .name = "em28xx", |
2000 | .probe = em28xx_usb_probe, | |
2001 | .disconnect = em28xx_usb_disconnect, | |
2002 | .id_table = em28xx_id_table, | |
a6c2ba28 | 2003 | }; |
2004 | ||
3acf2809 | 2005 | static int __init em28xx_module_init(void) |
a6c2ba28 | 2006 | { |
2007 | int result; | |
2008 | ||
2009 | printk(KERN_INFO DRIVER_NAME " v4l2 driver version %d.%d.%d loaded\n", | |
3acf2809 MCC |
2010 | (EM28XX_VERSION_CODE >> 16) & 0xff, |
2011 | (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff); | |
a6c2ba28 | 2012 | #ifdef SNAPSHOT |
2013 | printk(KERN_INFO DRIVER_NAME " snapshot date %04d-%02d-%02d\n", | |
2014 | SNAPSHOT / 10000, (SNAPSHOT / 100) % 100, SNAPSHOT % 100); | |
2015 | #endif | |
2016 | ||
2017 | /* register this driver with the USB subsystem */ | |
3acf2809 | 2018 | result = usb_register(&em28xx_usb_driver); |
a6c2ba28 | 2019 | if (result) |
3acf2809 | 2020 | em28xx_err(DRIVER_NAME |
a6c2ba28 | 2021 | " usb_register failed. Error number %d.\n", result); |
2022 | ||
2023 | return result; | |
2024 | } | |
2025 | ||
3acf2809 | 2026 | static void __exit em28xx_module_exit(void) |
a6c2ba28 | 2027 | { |
2028 | /* deregister this driver with the USB subsystem */ | |
3acf2809 | 2029 | usb_deregister(&em28xx_usb_driver); |
a6c2ba28 | 2030 | } |
2031 | ||
3acf2809 MCC |
2032 | module_init(em28xx_module_init); |
2033 | module_exit(em28xx_module_exit); |