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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> |
a6c2ba28 | 36 | #include <linux/video_decoder.h> |
1e4baed3 | 37 | #include <linux/mutex.h> |
a6c2ba28 | 38 | |
f7abcd38 | 39 | #include "em28xx.h" |
c0477ad9 | 40 | #include <media/v4l2-common.h> |
2474ed44 | 41 | #include <media/msp3400.h> |
a6c2ba28 | 42 | |
f7abcd38 MCC |
43 | #define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \ |
44 | "Markus Rechberger <mrechberger@gmail.com>, " \ | |
2e7c6dc3 | 45 | "Mauro Carvalho Chehab <mchehab@infradead.org>, " \ |
f7abcd38 | 46 | "Sascha Sommer <saschasommer@freenet.de>" |
a6c2ba28 | 47 | |
f7abcd38 MCC |
48 | #define DRIVER_NAME "em28xx" |
49 | #define DRIVER_DESC "Empia em28xx based USB video device driver" | |
3acf2809 | 50 | #define EM28XX_VERSION_CODE KERNEL_VERSION(0, 0, 1) |
a6c2ba28 | 51 | |
3acf2809 | 52 | #define em28xx_videodbg(fmt, arg...) do {\ |
4ac97914 MCC |
53 | if (video_debug) \ |
54 | printk(KERN_INFO "%s %s :"fmt, \ | |
f85c657f | 55 | dev->name, __FUNCTION__ , ##arg); } while (0) |
a6c2ba28 | 56 | |
57 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
58 | MODULE_DESCRIPTION(DRIVER_DESC); | |
59 | MODULE_LICENSE("GPL"); | |
60 | ||
3acf2809 | 61 | static LIST_HEAD(em28xx_devlist); |
9c75541f | 62 | |
9d4d9c05 | 63 | static unsigned int card[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; |
e5589bef MCC |
64 | static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; |
65 | static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; | |
596d92d5 | 66 | module_param_array(card, int, NULL, 0444); |
e5589bef MCC |
67 | module_param_array(video_nr, int, NULL, 0444); |
68 | module_param_array(vbi_nr, int, NULL, 0444); | |
596d92d5 | 69 | MODULE_PARM_DESC(card,"card type"); |
e5589bef MCC |
70 | MODULE_PARM_DESC(video_nr,"video device numbers"); |
71 | MODULE_PARM_DESC(vbi_nr,"vbi device numbers"); | |
596d92d5 | 72 | |
a6c2ba28 | 73 | static unsigned int video_debug = 0; |
74 | module_param(video_debug,int,0644); | |
75 | MODULE_PARM_DESC(video_debug,"enable debug messages [video]"); | |
76 | ||
e5589bef MCC |
77 | /* Bitmask marking allocated devices from 0 to EM28XX_MAXBOARDS */ |
78 | static unsigned long em28xx_devused; | |
79 | ||
a6c2ba28 | 80 | /* supported tv norms */ |
3acf2809 | 81 | static struct em28xx_tvnorm tvnorms[] = { |
a6c2ba28 | 82 | { |
83 | .name = "PAL", | |
84 | .id = V4L2_STD_PAL, | |
85 | .mode = VIDEO_MODE_PAL, | |
86 | }, { | |
87 | .name = "NTSC", | |
88 | .id = V4L2_STD_NTSC, | |
89 | .mode = VIDEO_MODE_NTSC, | |
90 | }, { | |
91 | .name = "SECAM", | |
92 | .id = V4L2_STD_SECAM, | |
93 | .mode = VIDEO_MODE_SECAM, | |
94 | }, { | |
95 | .name = "PAL-M", | |
96 | .id = V4L2_STD_PAL_M, | |
97 | .mode = VIDEO_MODE_PAL, | |
98 | } | |
99 | }; | |
100 | ||
101 | #define TVNORMS ARRAY_SIZE(tvnorms) | |
102 | ||
103 | /* supported controls */ | |
c0477ad9 | 104 | /* Common to all boards */ |
3acf2809 | 105 | static struct v4l2_queryctrl em28xx_qctrl[] = { |
c0477ad9 MCC |
106 | { |
107 | .id = V4L2_CID_AUDIO_VOLUME, | |
108 | .type = V4L2_CTRL_TYPE_INTEGER, | |
109 | .name = "Volume", | |
110 | .minimum = 0x0, | |
111 | .maximum = 0x1f, | |
112 | .step = 0x1, | |
113 | .default_value = 0x1f, | |
114 | .flags = 0, | |
115 | },{ | |
116 | .id = V4L2_CID_AUDIO_MUTE, | |
117 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
118 | .name = "Mute", | |
119 | .minimum = 0, | |
120 | .maximum = 1, | |
121 | .step = 1, | |
122 | .default_value = 1, | |
123 | .flags = 0, | |
124 | } | |
125 | }; | |
126 | ||
3acf2809 | 127 | static struct usb_driver em28xx_usb_driver; |
a6c2ba28 | 128 | |
a6c2ba28 | 129 | |
130 | /********************* v4l2 interface ******************************************/ | |
131 | ||
a6c2ba28 | 132 | /* |
3acf2809 | 133 | * em28xx_config() |
a6c2ba28 | 134 | * inits registers with sane defaults |
135 | */ | |
3acf2809 | 136 | static int em28xx_config(struct em28xx *dev) |
a6c2ba28 | 137 | { |
138 | ||
139 | /* Sets I2C speed to 100 KHz */ | |
2b2c93ac SS |
140 | if (!dev->is_em2800) |
141 | em28xx_write_regs_req(dev, 0x00, 0x06, "\x40", 1); | |
a6c2ba28 | 142 | |
143 | /* enable vbi capturing */ | |
e5589bef | 144 | |
9475fb1c MR |
145 | /* em28xx_write_regs_req(dev,0x00,0x0e,"\xC0",1); audio register */ |
146 | /* em28xx_write_regs_req(dev,0x00,0x0f,"\x80",1); clk register */ | |
e5589bef MCC |
147 | em28xx_write_regs_req(dev,0x00,0x11,"\x51",1); |
148 | ||
3acf2809 | 149 | em28xx_audio_usb_mute(dev, 1); |
a6c2ba28 | 150 | dev->mute = 1; /* maybe not the right place... */ |
151 | dev->volume = 0x1f; | |
3acf2809 MCC |
152 | em28xx_audio_analog_set(dev); |
153 | em28xx_audio_analog_setup(dev); | |
154 | em28xx_outfmt_set_yuv422(dev); | |
155 | em28xx_colorlevels_set_default(dev); | |
156 | em28xx_compression_disable(dev); | |
a6c2ba28 | 157 | |
158 | return 0; | |
159 | } | |
160 | ||
161 | /* | |
3acf2809 | 162 | * em28xx_config_i2c() |
a6c2ba28 | 163 | * configure i2c attached devices |
164 | */ | |
943a4902 | 165 | static void em28xx_config_i2c(struct em28xx *dev) |
a6c2ba28 | 166 | { |
c7c0b34c HV |
167 | struct v4l2_routing route; |
168 | ||
169 | route.input = INPUT(dev->ctl_input)->vmux; | |
170 | route.output = 0; | |
663d1ba2 | 171 | em28xx_i2c_call_clients(dev, VIDIOC_INT_RESET, NULL); |
c7c0b34c | 172 | em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route); |
f5762e44 | 173 | em28xx_i2c_call_clients(dev, VIDIOC_STREAMON, NULL); |
a6c2ba28 | 174 | } |
175 | ||
176 | /* | |
3acf2809 | 177 | * em28xx_empty_framequeues() |
a6c2ba28 | 178 | * prepare queues for incoming and outgoing frames |
179 | */ | |
3acf2809 | 180 | static void em28xx_empty_framequeues(struct em28xx *dev) |
a6c2ba28 | 181 | { |
182 | u32 i; | |
183 | ||
184 | INIT_LIST_HEAD(&dev->inqueue); | |
185 | INIT_LIST_HEAD(&dev->outqueue); | |
186 | ||
3acf2809 | 187 | for (i = 0; i < EM28XX_NUM_FRAMES; i++) { |
a6c2ba28 | 188 | dev->frame[i].state = F_UNUSED; |
189 | dev->frame[i].buf.bytesused = 0; | |
190 | } | |
191 | } | |
192 | ||
eac94356 MCC |
193 | static void video_mux(struct em28xx *dev, int index) |
194 | { | |
c7c0b34c HV |
195 | int ainput; |
196 | struct v4l2_routing route; | |
eac94356 | 197 | |
c7c0b34c HV |
198 | route.input = INPUT(index)->vmux; |
199 | route.output = 0; | |
eac94356 MCC |
200 | dev->ctl_input = index; |
201 | dev->ctl_ainput = INPUT(index)->amux; | |
202 | ||
c7c0b34c | 203 | em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route); |
eac94356 | 204 | |
c7c0b34c | 205 | em28xx_videodbg("Setting input index=%d, vmux=%d, amux=%d\n",index,route.input,dev->ctl_ainput); |
eac94356 MCC |
206 | |
207 | if (dev->has_msp34xx) { | |
9bb13a6d MCC |
208 | if (dev->i2s_speed) |
209 | em28xx_i2c_call_clients(dev, VIDIOC_INT_I2S_CLOCK_FREQ, &dev->i2s_speed); | |
2474ed44 | 210 | route.input = dev->ctl_ainput; |
07151724 | 211 | route.output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1); |
2474ed44 HV |
212 | /* Note: this is msp3400 specific */ |
213 | em28xx_i2c_call_clients(dev, VIDIOC_INT_S_AUDIO_ROUTING, &route); | |
eac94356 MCC |
214 | ainput = EM28XX_AUDIO_SRC_TUNER; |
215 | em28xx_audio_source(dev, ainput); | |
216 | } else { | |
217 | switch (dev->ctl_ainput) { | |
9475fb1c MR |
218 | case 0: |
219 | ainput = EM28XX_AUDIO_SRC_TUNER; | |
220 | break; | |
221 | default: | |
222 | ainput = EM28XX_AUDIO_SRC_LINE; | |
eac94356 MCC |
223 | } |
224 | em28xx_audio_source(dev, ainput); | |
225 | } | |
226 | } | |
227 | ||
a225452e MCC |
228 | /* Usage lock check functions */ |
229 | static int res_get(struct em28xx_fh *fh) | |
230 | { | |
231 | struct em28xx *dev = fh->dev; | |
232 | int rc = 0; | |
233 | ||
234 | /* This instance already has stream_on */ | |
235 | if (fh->stream_on) | |
236 | return rc; | |
237 | ||
238 | mutex_lock(&dev->lock); | |
239 | ||
240 | if (dev->stream_on) | |
241 | rc = -EINVAL; | |
242 | else { | |
243 | dev->stream_on = 1; | |
244 | fh->stream_on = 1; | |
245 | } | |
246 | ||
247 | mutex_unlock(&dev->lock); | |
248 | return rc; | |
249 | } | |
250 | ||
251 | static int res_check(struct em28xx_fh *fh) | |
252 | { | |
253 | return (fh->stream_on); | |
254 | } | |
255 | ||
256 | static void res_free(struct em28xx_fh *fh) | |
257 | { | |
258 | struct em28xx *dev = fh->dev; | |
259 | ||
260 | mutex_lock(&dev->lock); | |
261 | fh->stream_on = 0; | |
262 | dev->stream_on = 0; | |
263 | mutex_unlock(&dev->lock); | |
264 | } | |
265 | ||
a6c2ba28 | 266 | /* |
3acf2809 | 267 | * em28xx_v4l2_open() |
a6c2ba28 | 268 | * inits the device and starts isoc transfer |
269 | */ | |
3acf2809 | 270 | static int em28xx_v4l2_open(struct inode *inode, struct file *filp) |
a6c2ba28 | 271 | { |
a6c2ba28 | 272 | int minor = iminor(inode); |
a6c2ba28 | 273 | int errCode = 0; |
3acf2809 | 274 | struct em28xx *h,*dev = NULL; |
a3a048ce | 275 | struct em28xx_fh *fh; |
9c75541f | 276 | |
a991f44b | 277 | list_for_each_entry(h, &em28xx_devlist, devlist) { |
9c75541f MR |
278 | if (h->vdev->minor == minor) { |
279 | dev = h; | |
e5589bef MCC |
280 | dev->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
281 | } | |
282 | if (h->vbi_dev->minor == minor) { | |
283 | dev = h; | |
284 | dev->type = V4L2_BUF_TYPE_VBI_CAPTURE; | |
9c75541f MR |
285 | } |
286 | } | |
e5589bef MCC |
287 | if (NULL == dev) |
288 | return -ENODEV; | |
9c75541f | 289 | |
e5589bef MCC |
290 | em28xx_videodbg("open minor=%d type=%s users=%d\n", |
291 | minor,v4l2_type_names[dev->type],dev->users); | |
a6c2ba28 | 292 | |
a3a048ce | 293 | fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL); |
a6c2ba28 | 294 | |
a3a048ce MCC |
295 | if (!fh) { |
296 | em28xx_errdev("em28xx-video.c: Out of memory?!\n"); | |
297 | return -ENOMEM; | |
a6c2ba28 | 298 | } |
a3a048ce MCC |
299 | mutex_lock(&dev->lock); |
300 | fh->dev = dev; | |
301 | filp->private_data = fh; | |
a6c2ba28 | 302 | |
a3a048ce | 303 | if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) { |
e5589bef | 304 | em28xx_set_alternate(dev); |
a6c2ba28 | 305 | |
e5589bef MCC |
306 | dev->width = norm_maxw(dev); |
307 | dev->height = norm_maxh(dev); | |
308 | dev->frame_size = dev->width * dev->height * 2; | |
309 | dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */ | |
310 | dev->bytesperline = dev->width * 2; | |
311 | dev->hscale = 0; | |
312 | dev->vscale = 0; | |
a6c2ba28 | 313 | |
e5589bef MCC |
314 | em28xx_capture_start(dev, 1); |
315 | em28xx_resolution_set(dev); | |
a6c2ba28 | 316 | |
e5d4a56d | 317 | |
e5589bef MCC |
318 | /* start the transfer */ |
319 | errCode = em28xx_init_isoc(dev); | |
320 | if (errCode) | |
321 | goto err; | |
322 | ||
a3a048ce | 323 | em28xx_empty_framequeues(dev); |
e5589bef | 324 | } |
a6c2ba28 | 325 | |
326 | dev->users++; | |
a6c2ba28 | 327 | |
3593cab5 IM |
328 | err: |
329 | mutex_unlock(&dev->lock); | |
a6c2ba28 | 330 | return errCode; |
331 | } | |
332 | ||
333 | /* | |
3acf2809 | 334 | * em28xx_realease_resources() |
a6c2ba28 | 335 | * unregisters the v4l2,i2c and usb devices |
336 | * called when the device gets disconected or at module unload | |
337 | */ | |
3acf2809 | 338 | static void em28xx_release_resources(struct em28xx *dev) |
a6c2ba28 | 339 | { |
a6c2ba28 | 340 | |
e5589bef MCC |
341 | /*FIXME: I2C IR should be disconnected */ |
342 | ||
343 | em28xx_info("V4L2 devices /dev/video%d and /dev/vbi%d deregistered\n", | |
344 | dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN, | |
345 | dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN); | |
9c75541f | 346 | list_del(&dev->devlist); |
a6c2ba28 | 347 | video_unregister_device(dev->vdev); |
e5589bef | 348 | video_unregister_device(dev->vbi_dev); |
3acf2809 | 349 | em28xx_i2c_unregister(dev); |
a6c2ba28 | 350 | usb_put_dev(dev->udev); |
e5589bef MCC |
351 | |
352 | ||
353 | /* Mark device as unused */ | |
354 | em28xx_devused&=~(1<<dev->devno); | |
a6c2ba28 | 355 | } |
356 | ||
357 | /* | |
3acf2809 | 358 | * em28xx_v4l2_close() |
a6c2ba28 | 359 | * stops streaming and deallocates all resources allocated by the v4l2 calls and ioctls |
360 | */ | |
3acf2809 | 361 | static int em28xx_v4l2_close(struct inode *inode, struct file *filp) |
a6c2ba28 | 362 | { |
a3a048ce MCC |
363 | struct em28xx_fh *fh = filp->private_data; |
364 | struct em28xx *dev = fh->dev; | |
365 | int errCode; | |
a6c2ba28 | 366 | |
eac94356 | 367 | em28xx_videodbg("users=%d\n", dev->users); |
a6c2ba28 | 368 | |
a225452e MCC |
369 | |
370 | if (res_check(fh)) | |
371 | res_free(fh); | |
372 | ||
3593cab5 | 373 | mutex_lock(&dev->lock); |
a6c2ba28 | 374 | |
a3a048ce | 375 | if (dev->users == 1) { |
a3a048ce MCC |
376 | em28xx_uninit_isoc(dev); |
377 | em28xx_release_buffers(dev); | |
a225452e | 378 | dev->io = IO_NONE; |
a6c2ba28 | 379 | |
a3a048ce MCC |
380 | /* the device is already disconnect, |
381 | free the remaining resources */ | |
382 | if (dev->state & DEV_DISCONNECTED) { | |
383 | em28xx_release_resources(dev); | |
384 | mutex_unlock(&dev->lock); | |
385 | kfree(dev); | |
386 | return 0; | |
387 | } | |
a6c2ba28 | 388 | |
a3a048ce MCC |
389 | /* set alternate 0 */ |
390 | dev->alt = 0; | |
391 | em28xx_videodbg("setting alternate 0\n"); | |
392 | errCode = usb_set_interface(dev->udev, 0, 0); | |
393 | if (errCode < 0) { | |
394 | em28xx_errdev("cannot change alternate number to " | |
395 | "0 (error=%i)\n", errCode); | |
396 | } | |
a6c2ba28 | 397 | } |
a3a048ce | 398 | kfree(fh); |
a6c2ba28 | 399 | dev->users--; |
400 | wake_up_interruptible_nr(&dev->open, 1); | |
3593cab5 | 401 | mutex_unlock(&dev->lock); |
a6c2ba28 | 402 | return 0; |
403 | } | |
404 | ||
405 | /* | |
3acf2809 | 406 | * em28xx_v4l2_read() |
a6c2ba28 | 407 | * will allocate buffers when called for the first time |
408 | */ | |
409 | static ssize_t | |
3acf2809 | 410 | em28xx_v4l2_read(struct file *filp, char __user * buf, size_t count, |
a6c2ba28 | 411 | loff_t * f_pos) |
412 | { | |
3acf2809 | 413 | struct em28xx_frame_t *f, *i; |
a6c2ba28 | 414 | unsigned long lock_flags; |
415 | int ret = 0; | |
a3a048ce MCC |
416 | struct em28xx_fh *fh = filp->private_data; |
417 | struct em28xx *dev = fh->dev; | |
a6c2ba28 | 418 | |
a225452e MCC |
419 | |
420 | if (unlikely(res_get(fh) < 0)) | |
421 | return -EBUSY; | |
422 | ||
5a80415b SS |
423 | mutex_lock(&dev->lock); |
424 | ||
a3a048ce | 425 | if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
e5589bef | 426 | em28xx_videodbg("V4l2_Buf_type_videocapture is set\n"); |
a3a048ce | 427 | |
e5589bef MCC |
428 | if (dev->type == V4L2_BUF_TYPE_VBI_CAPTURE) { |
429 | em28xx_videodbg("V4L2_BUF_TYPE_VBI_CAPTURE is set\n"); | |
430 | em28xx_videodbg("not supported yet! ...\n"); | |
431 | if (copy_to_user(buf, "", 1)) { | |
5a80415b | 432 | mutex_unlock(&dev->lock); |
e5589bef MCC |
433 | return -EFAULT; |
434 | } | |
5a80415b | 435 | mutex_unlock(&dev->lock); |
e5589bef MCC |
436 | return (1); |
437 | } | |
438 | if (dev->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) { | |
439 | em28xx_videodbg("V4L2_BUF_TYPE_SLICED_VBI_CAPTURE is set\n"); | |
440 | em28xx_videodbg("not supported yet! ...\n"); | |
441 | if (copy_to_user(buf, "", 1)) { | |
5a80415b | 442 | mutex_unlock(&dev->lock); |
e5589bef MCC |
443 | return -EFAULT; |
444 | } | |
5a80415b | 445 | mutex_unlock(&dev->lock); |
e5589bef MCC |
446 | return (1); |
447 | } | |
448 | ||
a6c2ba28 | 449 | if (dev->state & DEV_DISCONNECTED) { |
eac94356 | 450 | em28xx_videodbg("device not present\n"); |
5a80415b | 451 | mutex_unlock(&dev->lock); |
a6c2ba28 | 452 | return -ENODEV; |
453 | } | |
454 | ||
455 | if (dev->state & DEV_MISCONFIGURED) { | |
eac94356 | 456 | em28xx_videodbg("device misconfigured; close and open it again\n"); |
5a80415b | 457 | mutex_unlock(&dev->lock); |
a6c2ba28 | 458 | return -EIO; |
459 | } | |
460 | ||
461 | if (dev->io == IO_MMAP) { | |
3acf2809 | 462 | em28xx_videodbg ("IO method is set to mmap; close and open" |
eac94356 | 463 | " the device again to choose the read method\n"); |
5a80415b | 464 | mutex_unlock(&dev->lock); |
a6c2ba28 | 465 | return -EINVAL; |
466 | } | |
467 | ||
468 | if (dev->io == IO_NONE) { | |
3acf2809 MCC |
469 | if (!em28xx_request_buffers(dev, EM28XX_NUM_READ_FRAMES)) { |
470 | em28xx_errdev("read failed, not enough memory\n"); | |
5a80415b | 471 | mutex_unlock(&dev->lock); |
a6c2ba28 | 472 | return -ENOMEM; |
473 | } | |
474 | dev->io = IO_READ; | |
475 | dev->stream = STREAM_ON; | |
3acf2809 | 476 | em28xx_queue_unusedframes(dev); |
a6c2ba28 | 477 | } |
478 | ||
479 | if (!count) { | |
5a80415b | 480 | mutex_unlock(&dev->lock); |
a6c2ba28 | 481 | return 0; |
482 | } | |
483 | ||
484 | if (list_empty(&dev->outqueue)) { | |
485 | if (filp->f_flags & O_NONBLOCK) { | |
5a80415b | 486 | mutex_unlock(&dev->lock); |
a6c2ba28 | 487 | return -EAGAIN; |
488 | } | |
489 | ret = wait_event_interruptible | |
490 | (dev->wait_frame, | |
491 | (!list_empty(&dev->outqueue)) || | |
492 | (dev->state & DEV_DISCONNECTED)); | |
493 | if (ret) { | |
5a80415b | 494 | mutex_unlock(&dev->lock); |
a6c2ba28 | 495 | return ret; |
496 | } | |
497 | if (dev->state & DEV_DISCONNECTED) { | |
5a80415b | 498 | mutex_unlock(&dev->lock); |
a6c2ba28 | 499 | return -ENODEV; |
500 | } | |
501 | } | |
502 | ||
3acf2809 | 503 | f = list_entry(dev->outqueue.prev, struct em28xx_frame_t, frame); |
a6c2ba28 | 504 | |
505 | spin_lock_irqsave(&dev->queue_lock, lock_flags); | |
506 | list_for_each_entry(i, &dev->outqueue, frame) | |
507 | i->state = F_UNUSED; | |
508 | INIT_LIST_HEAD(&dev->outqueue); | |
509 | spin_unlock_irqrestore(&dev->queue_lock, lock_flags); | |
510 | ||
3acf2809 | 511 | em28xx_queue_unusedframes(dev); |
a6c2ba28 | 512 | |
513 | if (count > f->buf.length) | |
514 | count = f->buf.length; | |
515 | ||
516 | if (copy_to_user(buf, f->bufmem, count)) { | |
5a80415b | 517 | mutex_unlock(&dev->lock); |
a6c2ba28 | 518 | return -EFAULT; |
519 | } | |
520 | *f_pos += count; | |
521 | ||
5a80415b | 522 | mutex_unlock(&dev->lock); |
a6c2ba28 | 523 | |
524 | return count; | |
525 | } | |
526 | ||
527 | /* | |
3acf2809 | 528 | * em28xx_v4l2_poll() |
a6c2ba28 | 529 | * will allocate buffers when called for the first time |
530 | */ | |
3acf2809 | 531 | static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table * wait) |
a6c2ba28 | 532 | { |
a6c2ba28 | 533 | unsigned int mask = 0; |
a3a048ce MCC |
534 | struct em28xx_fh *fh = filp->private_data; |
535 | struct em28xx *dev = fh->dev; | |
a6c2ba28 | 536 | |
a225452e MCC |
537 | if (unlikely(res_get(fh) < 0)) |
538 | return POLLERR; | |
539 | ||
5a80415b | 540 | mutex_lock(&dev->lock); |
a6c2ba28 | 541 | |
542 | if (dev->state & DEV_DISCONNECTED) { | |
eac94356 | 543 | em28xx_videodbg("device not present\n"); |
a6c2ba28 | 544 | } else if (dev->state & DEV_MISCONFIGURED) { |
eac94356 | 545 | em28xx_videodbg("device is misconfigured; close and open it again\n"); |
a6c2ba28 | 546 | } else { |
547 | if (dev->io == IO_NONE) { | |
3acf2809 MCC |
548 | if (!em28xx_request_buffers |
549 | (dev, EM28XX_NUM_READ_FRAMES)) { | |
550 | em28xx_warn | |
a6c2ba28 | 551 | ("poll() failed, not enough memory\n"); |
552 | } else { | |
553 | dev->io = IO_READ; | |
554 | dev->stream = STREAM_ON; | |
555 | } | |
556 | } | |
557 | ||
558 | if (dev->io == IO_READ) { | |
3acf2809 | 559 | em28xx_queue_unusedframes(dev); |
a6c2ba28 | 560 | poll_wait(filp, &dev->wait_frame, wait); |
561 | ||
562 | if (!list_empty(&dev->outqueue)) | |
563 | mask |= POLLIN | POLLRDNORM; | |
564 | ||
5a80415b | 565 | mutex_unlock(&dev->lock); |
a6c2ba28 | 566 | |
567 | return mask; | |
568 | } | |
569 | } | |
570 | ||
5a80415b | 571 | mutex_unlock(&dev->lock); |
a6c2ba28 | 572 | return POLLERR; |
573 | } | |
574 | ||
575 | /* | |
3acf2809 | 576 | * em28xx_vm_open() |
a6c2ba28 | 577 | */ |
3acf2809 | 578 | static void em28xx_vm_open(struct vm_area_struct *vma) |
a6c2ba28 | 579 | { |
3acf2809 | 580 | struct em28xx_frame_t *f = vma->vm_private_data; |
a6c2ba28 | 581 | f->vma_use_count++; |
582 | } | |
583 | ||
584 | /* | |
3acf2809 | 585 | * em28xx_vm_close() |
a6c2ba28 | 586 | */ |
3acf2809 | 587 | static void em28xx_vm_close(struct vm_area_struct *vma) |
a6c2ba28 | 588 | { |
589 | /* NOTE: buffers are not freed here */ | |
3acf2809 | 590 | struct em28xx_frame_t *f = vma->vm_private_data; |
63337dd3 MCC |
591 | |
592 | if (f->vma_use_count) | |
593 | f->vma_use_count--; | |
a6c2ba28 | 594 | } |
595 | ||
3acf2809 MCC |
596 | static struct vm_operations_struct em28xx_vm_ops = { |
597 | .open = em28xx_vm_open, | |
598 | .close = em28xx_vm_close, | |
a6c2ba28 | 599 | }; |
600 | ||
601 | /* | |
3acf2809 | 602 | * em28xx_v4l2_mmap() |
a6c2ba28 | 603 | */ |
3acf2809 | 604 | static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma) |
a6c2ba28 | 605 | { |
a3a048ce MCC |
606 | struct em28xx_fh *fh = filp->private_data; |
607 | struct em28xx *dev = fh->dev; | |
608 | unsigned long size = vma->vm_end - vma->vm_start; | |
609 | unsigned long start = vma->vm_start; | |
610 | void *pos; | |
611 | u32 i; | |
9c75541f | 612 | |
a225452e | 613 | if (unlikely(res_get(fh) < 0)) |
a3a048ce | 614 | return -EBUSY; |
a225452e MCC |
615 | |
616 | mutex_lock(&dev->lock); | |
a3a048ce | 617 | |
a6c2ba28 | 618 | if (dev->state & DEV_DISCONNECTED) { |
eac94356 | 619 | em28xx_videodbg("mmap: device not present\n"); |
5a80415b | 620 | mutex_unlock(&dev->lock); |
a6c2ba28 | 621 | return -ENODEV; |
622 | } | |
623 | ||
624 | if (dev->state & DEV_MISCONFIGURED) { | |
3acf2809 | 625 | em28xx_videodbg ("mmap: Device is misconfigured; close and " |
eac94356 | 626 | "open it again\n"); |
5a80415b | 627 | mutex_unlock(&dev->lock); |
a6c2ba28 | 628 | return -EIO; |
629 | } | |
630 | ||
631 | if (dev->io != IO_MMAP || !(vma->vm_flags & VM_WRITE) || | |
632 | size != PAGE_ALIGN(dev->frame[0].buf.length)) { | |
5a80415b | 633 | mutex_unlock(&dev->lock); |
a6c2ba28 | 634 | return -EINVAL; |
635 | } | |
636 | ||
637 | for (i = 0; i < dev->num_frames; i++) { | |
638 | if ((dev->frame[i].buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff) | |
639 | break; | |
640 | } | |
641 | if (i == dev->num_frames) { | |
eac94356 | 642 | em28xx_videodbg("mmap: user supplied mapping address is out of range\n"); |
5a80415b | 643 | mutex_unlock(&dev->lock); |
a6c2ba28 | 644 | return -EINVAL; |
645 | } | |
646 | ||
647 | /* VM_IO is eventually going to replace PageReserved altogether */ | |
648 | vma->vm_flags |= VM_IO; | |
649 | vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */ | |
650 | ||
3639c861 | 651 | pos = dev->frame[i].bufmem; |
a6c2ba28 | 652 | while (size > 0) { /* size is page-aligned */ |
3639c861 SS |
653 | if (vm_insert_page(vma, start, vmalloc_to_page(pos))) { |
654 | em28xx_videodbg("mmap: vm_insert_page failed\n"); | |
5a80415b | 655 | mutex_unlock(&dev->lock); |
a6c2ba28 | 656 | return -EAGAIN; |
657 | } | |
658 | start += PAGE_SIZE; | |
659 | pos += PAGE_SIZE; | |
660 | size -= PAGE_SIZE; | |
661 | } | |
662 | ||
3acf2809 | 663 | vma->vm_ops = &em28xx_vm_ops; |
a6c2ba28 | 664 | vma->vm_private_data = &dev->frame[i]; |
665 | ||
3acf2809 | 666 | em28xx_vm_open(vma); |
5a80415b | 667 | mutex_unlock(&dev->lock); |
a6c2ba28 | 668 | return 0; |
669 | } | |
670 | ||
671 | /* | |
3acf2809 | 672 | * em28xx_get_ctrl() |
a6c2ba28 | 673 | * return the current saturation, brightness or contrast, mute state |
674 | */ | |
3acf2809 | 675 | static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl) |
a6c2ba28 | 676 | { |
a6c2ba28 | 677 | switch (ctrl->id) { |
678 | case V4L2_CID_AUDIO_MUTE: | |
679 | ctrl->value = dev->mute; | |
680 | return 0; | |
681 | case V4L2_CID_AUDIO_VOLUME: | |
682 | ctrl->value = dev->volume; | |
683 | return 0; | |
c0477ad9 MCC |
684 | default: |
685 | return -EINVAL; | |
686 | } | |
687 | } | |
688 | ||
a6c2ba28 | 689 | /* |
3acf2809 | 690 | * em28xx_set_ctrl() |
a6c2ba28 | 691 | * mute or set new saturation, brightness or contrast |
692 | */ | |
3acf2809 | 693 | static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl) |
a6c2ba28 | 694 | { |
695 | switch (ctrl->id) { | |
696 | case V4L2_CID_AUDIO_MUTE: | |
697 | if (ctrl->value != dev->mute) { | |
698 | dev->mute = ctrl->value; | |
3acf2809 MCC |
699 | em28xx_audio_usb_mute(dev, ctrl->value); |
700 | return em28xx_audio_analog_set(dev); | |
a6c2ba28 | 701 | } |
702 | return 0; | |
703 | case V4L2_CID_AUDIO_VOLUME: | |
704 | dev->volume = ctrl->value; | |
3acf2809 | 705 | return em28xx_audio_analog_set(dev); |
c0477ad9 MCC |
706 | default: |
707 | return -EINVAL; | |
708 | } | |
709 | } | |
710 | ||
a6c2ba28 | 711 | /* |
3acf2809 | 712 | * em28xx_stream_interrupt() |
a6c2ba28 | 713 | * stops streaming |
714 | */ | |
3acf2809 | 715 | static int em28xx_stream_interrupt(struct em28xx *dev) |
a6c2ba28 | 716 | { |
717 | int ret = 0; | |
718 | ||
719 | /* stop reading from the device */ | |
720 | ||
721 | dev->stream = STREAM_INTERRUPT; | |
722 | ret = wait_event_timeout(dev->wait_stream, | |
723 | (dev->stream == STREAM_OFF) || | |
724 | (dev->state & DEV_DISCONNECTED), | |
3acf2809 | 725 | EM28XX_URB_TIMEOUT); |
a6c2ba28 | 726 | if (dev->state & DEV_DISCONNECTED) |
727 | return -ENODEV; | |
728 | else if (ret) { | |
729 | dev->state |= DEV_MISCONFIGURED; | |
3acf2809 | 730 | em28xx_videodbg("device is misconfigured; close and " |
e5589bef MCC |
731 | "open /dev/video%d again\n", |
732 | dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN); | |
a6c2ba28 | 733 | return ret; |
734 | } | |
735 | ||
736 | return 0; | |
737 | } | |
738 | ||
3acf2809 | 739 | static int em28xx_set_norm(struct em28xx *dev, int width, int height) |
a6c2ba28 | 740 | { |
741 | unsigned int hscale, vscale; | |
742 | unsigned int maxh, maxw; | |
743 | ||
744 | maxw = norm_maxw(dev); | |
745 | maxh = norm_maxh(dev); | |
746 | ||
747 | /* width must even because of the YUYV format */ | |
748 | /* height must be even because of interlacing */ | |
749 | height &= 0xfffe; | |
750 | width &= 0xfffe; | |
751 | ||
752 | if (height < 32) | |
753 | height = 32; | |
754 | if (height > maxh) | |
755 | height = maxh; | |
756 | if (width < 48) | |
757 | width = 48; | |
758 | if (width > maxw) | |
759 | width = maxw; | |
760 | ||
761 | if ((hscale = (((unsigned long)maxw) << 12) / width - 4096L) >= 0x4000) | |
762 | hscale = 0x3fff; | |
763 | width = (((unsigned long)maxw) << 12) / (hscale + 4096L); | |
764 | ||
765 | if ((vscale = (((unsigned long)maxh) << 12) / height - 4096L) >= 0x4000) | |
766 | vscale = 0x3fff; | |
767 | height = (((unsigned long)maxh) << 12) / (vscale + 4096L); | |
768 | ||
769 | /* set new image size */ | |
770 | dev->width = width; | |
771 | dev->height = height; | |
772 | dev->frame_size = dev->width * dev->height * 2; | |
773 | dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */ | |
774 | dev->bytesperline = dev->width * 2; | |
775 | dev->hscale = hscale; | |
776 | dev->vscale = vscale; | |
777 | ||
3acf2809 | 778 | em28xx_resolution_set(dev); |
a6c2ba28 | 779 | |
780 | return 0; | |
781 | } | |
782 | ||
e5589bef MCC |
783 | static int em28xx_get_fmt(struct em28xx *dev, struct v4l2_format *format) |
784 | { | |
785 | em28xx_videodbg("VIDIOC_G_FMT: type=%s\n", | |
786 | (format->type ==V4L2_BUF_TYPE_VIDEO_CAPTURE) ? | |
787 | "V4L2_BUF_TYPE_VIDEO_CAPTURE" : | |
788 | (format->type ==V4L2_BUF_TYPE_VBI_CAPTURE) ? | |
789 | "V4L2_BUF_TYPE_VBI_CAPTURE" : | |
790 | (format->type ==V4L2_CAP_SLICED_VBI_CAPTURE) ? | |
791 | "V4L2_BUF_TYPE_SLICED_VBI_CAPTURE " : | |
792 | "not supported"); | |
793 | ||
2d50f847 MCC |
794 | switch (format->type) { |
795 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
796 | { | |
e5589bef MCC |
797 | format->fmt.pix.width = dev->width; |
798 | format->fmt.pix.height = dev->height; | |
799 | format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; | |
800 | format->fmt.pix.bytesperline = dev->bytesperline; | |
801 | format->fmt.pix.sizeimage = dev->frame_size; | |
802 | format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; | |
803 | format->fmt.pix.field = dev->interlaced ? V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */ | |
804 | ||
805 | em28xx_videodbg("VIDIOC_G_FMT: %dx%d\n", dev->width, | |
806 | dev->height); | |
2d50f847 | 807 | break; |
e5589bef MCC |
808 | } |
809 | ||
2d50f847 MCC |
810 | case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: |
811 | { | |
812 | format->fmt.sliced.service_set=0; | |
813 | ||
814 | em28xx_i2c_call_clients(dev,VIDIOC_G_FMT,format); | |
815 | ||
816 | if (format->fmt.sliced.service_set==0) | |
817 | return -EINVAL; | |
818 | ||
819 | break; | |
820 | } | |
821 | ||
822 | default: | |
823 | return -EINVAL; | |
824 | } | |
825 | return (0); | |
e5589bef MCC |
826 | } |
827 | ||
2d50f847 MCC |
828 | static int em28xx_set_fmt(struct em28xx *dev, unsigned int cmd, struct v4l2_format *format) |
829 | { | |
830 | u32 i; | |
831 | int ret = 0; | |
832 | int width = format->fmt.pix.width; | |
833 | int height = format->fmt.pix.height; | |
834 | unsigned int hscale, vscale; | |
835 | unsigned int maxh, maxw; | |
836 | ||
837 | maxw = norm_maxw(dev); | |
838 | maxh = norm_maxh(dev); | |
839 | ||
840 | em28xx_videodbg("%s: type=%s\n", | |
841 | cmd == VIDIOC_TRY_FMT ? | |
842 | "VIDIOC_TRY_FMT" : "VIDIOC_S_FMT", | |
843 | format->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ? | |
844 | "V4L2_BUF_TYPE_VIDEO_CAPTURE" : | |
845 | format->type == V4L2_BUF_TYPE_VBI_CAPTURE ? | |
846 | "V4L2_BUF_TYPE_VBI_CAPTURE " : | |
847 | "not supported"); | |
848 | ||
849 | if (format->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) { | |
850 | em28xx_i2c_call_clients(dev,VIDIOC_G_FMT,format); | |
851 | ||
852 | if (format->fmt.sliced.service_set==0) | |
853 | return -EINVAL; | |
854 | ||
855 | return 0; | |
856 | } | |
857 | ||
858 | ||
859 | if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
860 | return -EINVAL; | |
861 | ||
862 | em28xx_videodbg("%s: requested %dx%d\n", | |
863 | cmd == VIDIOC_TRY_FMT ? | |
864 | "VIDIOC_TRY_FMT" : "VIDIOC_S_FMT", | |
865 | format->fmt.pix.width, format->fmt.pix.height); | |
866 | ||
867 | /* FIXME: Move some code away from here */ | |
868 | /* width must even because of the YUYV format */ | |
869 | /* height must be even because of interlacing */ | |
870 | height &= 0xfffe; | |
871 | width &= 0xfffe; | |
872 | ||
873 | if (height < 32) | |
874 | height = 32; | |
875 | if (height > maxh) | |
876 | height = maxh; | |
877 | if (width < 48) | |
878 | width = 48; | |
879 | if (width > maxw) | |
880 | width = maxw; | |
881 | ||
882 | if(dev->is_em2800){ | |
883 | /* the em2800 can only scale down to 50% */ | |
884 | if(height % (maxh / 2)) | |
885 | height=maxh; | |
886 | if(width % (maxw / 2)) | |
887 | width=maxw; | |
888 | /* according to empiatech support */ | |
889 | /* the MaxPacketSize is to small to support */ | |
890 | /* framesizes larger than 640x480 @ 30 fps */ | |
891 | /* or 640x576 @ 25 fps. As this would cut */ | |
892 | /* of a part of the image we prefer */ | |
893 | /* 360x576 or 360x480 for now */ | |
894 | if(width == maxw && height == maxh) | |
895 | width /= 2; | |
896 | } | |
897 | ||
9aeb4b05 | 898 | if ((hscale = (((unsigned long)maxw) << 12) / width - 4096L) >= 0x4000) |
2d50f847 | 899 | hscale = 0x3fff; |
2d50f847 | 900 | |
9aeb4b05 MCC |
901 | width = (((unsigned long)maxw) << 12) / (hscale + 4096L); |
902 | ||
903 | if ((vscale = (((unsigned long)maxh) << 12) / height - 4096L) >= 0x4000) | |
2d50f847 | 904 | vscale = 0x3fff; |
9aeb4b05 MCC |
905 | |
906 | height = (((unsigned long)maxh) << 12) / (vscale + 4096L); | |
2d50f847 MCC |
907 | |
908 | format->fmt.pix.width = width; | |
909 | format->fmt.pix.height = height; | |
910 | format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; | |
911 | format->fmt.pix.bytesperline = width * 2; | |
912 | format->fmt.pix.sizeimage = width * 2 * height; | |
913 | format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; | |
914 | format->fmt.pix.field = V4L2_FIELD_INTERLACED; | |
915 | ||
916 | em28xx_videodbg("%s: returned %dx%d (%d, %d)\n", | |
9aeb4b05 MCC |
917 | cmd == VIDIOC_TRY_FMT ? |
918 | "VIDIOC_TRY_FMT" :"VIDIOC_S_FMT", | |
919 | format->fmt.pix.width, format->fmt.pix.height, hscale, vscale); | |
2d50f847 MCC |
920 | |
921 | if (cmd == VIDIOC_TRY_FMT) | |
922 | return 0; | |
923 | ||
924 | for (i = 0; i < dev->num_frames; i++) | |
925 | if (dev->frame[i].vma_use_count) { | |
926 | em28xx_videodbg("VIDIOC_S_FMT failed. " | |
927 | "Unmap the buffers first.\n"); | |
928 | return -EINVAL; | |
929 | } | |
930 | ||
931 | /* stop io in case it is already in progress */ | |
932 | if (dev->stream == STREAM_ON) { | |
3a4fa0a2 | 933 | em28xx_videodbg("VIDIOC_SET_FMT: interrupting stream\n"); |
2d50f847 MCC |
934 | if ((ret = em28xx_stream_interrupt(dev))) |
935 | return ret; | |
936 | } | |
937 | ||
938 | em28xx_release_buffers(dev); | |
939 | dev->io = IO_NONE; | |
940 | ||
941 | /* set new image size */ | |
942 | dev->width = width; | |
943 | dev->height = height; | |
944 | dev->frame_size = dev->width * dev->height * 2; | |
9aeb4b05 | 945 | dev->field_size = dev->frame_size >> 1; |
2d50f847 MCC |
946 | dev->bytesperline = dev->width * 2; |
947 | dev->hscale = hscale; | |
948 | dev->vscale = vscale; | |
949 | em28xx_uninit_isoc(dev); | |
950 | em28xx_set_alternate(dev); | |
951 | em28xx_capture_start(dev, 1); | |
952 | em28xx_resolution_set(dev); | |
953 | em28xx_init_isoc(dev); | |
954 | ||
955 | return 0; | |
956 | } | |
e5589bef | 957 | |
a6c2ba28 | 958 | /* |
3acf2809 | 959 | * em28xx_v4l2_do_ioctl() |
a6c2ba28 | 960 | * This function is _not_ called directly, but from |
3acf2809 | 961 | * em28xx_v4l2_ioctl. Userspace |
a6c2ba28 | 962 | * copying is done already, arg is a kernel pointer. |
963 | */ | |
3acf2809 MCC |
964 | static int em28xx_do_ioctl(struct inode *inode, struct file *filp, |
965 | struct em28xx *dev, unsigned int cmd, void *arg, | |
a6c2ba28 | 966 | v4l2_kioctl driver_ioctl) |
967 | { | |
a3a048ce | 968 | struct em28xx_fh *fh = filp->private_data; |
a6c2ba28 | 969 | int ret; |
970 | ||
971 | switch (cmd) { | |
972 | /* ---------- tv norms ---------- */ | |
973 | case VIDIOC_ENUMSTD: | |
9aeb4b05 MCC |
974 | { |
975 | struct v4l2_standard *e = arg; | |
976 | unsigned int i; | |
a6c2ba28 | 977 | |
9aeb4b05 MCC |
978 | i = e->index; |
979 | if (i >= TVNORMS) | |
980 | return -EINVAL; | |
981 | ret = v4l2_video_std_construct(e, tvnorms[e->index].id, | |
982 | tvnorms[e->index].name); | |
983 | e->index = i; | |
984 | if (ret < 0) | |
985 | return ret; | |
986 | return 0; | |
987 | } | |
a6c2ba28 | 988 | case VIDIOC_G_STD: |
9aeb4b05 MCC |
989 | { |
990 | v4l2_std_id *id = arg; | |
a6c2ba28 | 991 | |
9aeb4b05 MCC |
992 | *id = dev->tvnorm->id; |
993 | return 0; | |
994 | } | |
a6c2ba28 | 995 | case VIDIOC_S_STD: |
9aeb4b05 MCC |
996 | { |
997 | v4l2_std_id *id = arg; | |
998 | unsigned int i; | |
a6c2ba28 | 999 | |
9aeb4b05 MCC |
1000 | for (i = 0; i < TVNORMS; i++) |
1001 | if (*id == tvnorms[i].id) | |
1002 | break; | |
1003 | if (i == TVNORMS) | |
a6c2ba28 | 1004 | for (i = 0; i < TVNORMS; i++) |
9aeb4b05 | 1005 | if (*id & tvnorms[i].id) |
a6c2ba28 | 1006 | break; |
9aeb4b05 MCC |
1007 | if (i == TVNORMS) |
1008 | return -EINVAL; | |
a6c2ba28 | 1009 | |
3593cab5 | 1010 | mutex_lock(&dev->lock); |
9aeb4b05 | 1011 | dev->tvnorm = &tvnorms[i]; |
a6c2ba28 | 1012 | |
9aeb4b05 | 1013 | em28xx_set_norm(dev, dev->width, dev->height); |
a6c2ba28 | 1014 | |
9aeb4b05 MCC |
1015 | em28xx_i2c_call_clients(dev, VIDIOC_S_STD, |
1016 | &dev->tvnorm->id); | |
a6c2ba28 | 1017 | |
3593cab5 | 1018 | mutex_unlock(&dev->lock); |
a6c2ba28 | 1019 | |
9aeb4b05 MCC |
1020 | return 0; |
1021 | } | |
a6c2ba28 | 1022 | |
9aeb4b05 | 1023 | /* ------ input switching ---------- */ |
a6c2ba28 | 1024 | case VIDIOC_ENUMINPUT: |
9aeb4b05 MCC |
1025 | { |
1026 | struct v4l2_input *i = arg; | |
1027 | unsigned int n; | |
1028 | static const char *iname[] = { | |
1029 | [EM28XX_VMUX_COMPOSITE1] = "Composite1", | |
1030 | [EM28XX_VMUX_COMPOSITE2] = "Composite2", | |
1031 | [EM28XX_VMUX_COMPOSITE3] = "Composite3", | |
1032 | [EM28XX_VMUX_COMPOSITE4] = "Composite4", | |
1033 | [EM28XX_VMUX_SVIDEO] = "S-Video", | |
1034 | [EM28XX_VMUX_TELEVISION] = "Television", | |
1035 | [EM28XX_VMUX_CABLE] = "Cable TV", | |
1036 | [EM28XX_VMUX_DVB] = "DVB", | |
1037 | [EM28XX_VMUX_DEBUG] = "for debug only", | |
1038 | }; | |
1039 | ||
1040 | n = i->index; | |
1041 | if (n >= MAX_EM28XX_INPUT) | |
1042 | return -EINVAL; | |
1043 | if (0 == INPUT(n)->type) | |
1044 | return -EINVAL; | |
1045 | memset(i, 0, sizeof(*i)); | |
1046 | i->index = n; | |
1047 | i->type = V4L2_INPUT_TYPE_CAMERA; | |
1048 | strcpy(i->name, iname[INPUT(n)->type]); | |
1049 | if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) || | |
1050 | (EM28XX_VMUX_CABLE == INPUT(n)->type)) | |
1051 | i->type = V4L2_INPUT_TYPE_TUNER; | |
1052 | for (n = 0; n < ARRAY_SIZE(tvnorms); n++) | |
1053 | i->std |= tvnorms[n].id; | |
1054 | return 0; | |
1055 | } | |
a6c2ba28 | 1056 | case VIDIOC_G_INPUT: |
9aeb4b05 MCC |
1057 | { |
1058 | int *i = arg; | |
1059 | *i = dev->ctl_input; | |
a6c2ba28 | 1060 | |
9aeb4b05 MCC |
1061 | return 0; |
1062 | } | |
a6c2ba28 | 1063 | case VIDIOC_S_INPUT: |
9aeb4b05 MCC |
1064 | { |
1065 | int *index = arg; | |
a6c2ba28 | 1066 | |
9aeb4b05 MCC |
1067 | if (*index >= MAX_EM28XX_INPUT) |
1068 | return -EINVAL; | |
1069 | if (0 == INPUT(*index)->type) | |
1070 | return -EINVAL; | |
a6c2ba28 | 1071 | |
3593cab5 | 1072 | mutex_lock(&dev->lock); |
9aeb4b05 | 1073 | video_mux(dev, *index); |
3593cab5 | 1074 | mutex_unlock(&dev->lock); |
a6c2ba28 | 1075 | |
9aeb4b05 MCC |
1076 | return 0; |
1077 | } | |
a6c2ba28 | 1078 | case VIDIOC_G_AUDIO: |
9aeb4b05 MCC |
1079 | { |
1080 | struct v4l2_audio *a = arg; | |
1081 | unsigned int index = a->index; | |
a6c2ba28 | 1082 | |
9aeb4b05 MCC |
1083 | if (a->index > 1) |
1084 | return -EINVAL; | |
1085 | memset(a, 0, sizeof(*a)); | |
1086 | index = dev->ctl_ainput; | |
a6c2ba28 | 1087 | |
9aeb4b05 MCC |
1088 | if (index == 0) { |
1089 | strcpy(a->name, "Television"); | |
1090 | } else { | |
1091 | strcpy(a->name, "Line In"); | |
a6c2ba28 | 1092 | } |
9aeb4b05 MCC |
1093 | a->capability = V4L2_AUDCAP_STEREO; |
1094 | a->index = index; | |
1095 | return 0; | |
1096 | } | |
a6c2ba28 | 1097 | case VIDIOC_S_AUDIO: |
9aeb4b05 MCC |
1098 | { |
1099 | struct v4l2_audio *a = arg; | |
a6c2ba28 | 1100 | |
9aeb4b05 MCC |
1101 | if (a->index != dev->ctl_ainput) |
1102 | return -EINVAL; | |
1103 | ||
1104 | return 0; | |
1105 | } | |
a6c2ba28 | 1106 | |
9aeb4b05 | 1107 | /* --- controls ---------------------------------------------- */ |
a6c2ba28 | 1108 | case VIDIOC_QUERYCTRL: |
9aeb4b05 MCC |
1109 | { |
1110 | struct v4l2_queryctrl *qc = arg; | |
1111 | int i, id=qc->id; | |
1112 | ||
1113 | memset(qc,0,sizeof(*qc)); | |
1114 | qc->id=id; | |
1115 | ||
1116 | if (!dev->has_msp34xx) { | |
1117 | for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) { | |
1118 | if (qc->id && qc->id == em28xx_qctrl[i].id) { | |
1119 | memcpy(qc, &(em28xx_qctrl[i]), | |
1120 | sizeof(*qc)); | |
a6c2ba28 | 1121 | return 0; |
1122 | } | |
c0477ad9 | 1123 | } |
9aeb4b05 | 1124 | } |
5a80415b | 1125 | mutex_lock(&dev->lock); |
f5762e44 | 1126 | em28xx_i2c_call_clients(dev,cmd,qc); |
5a80415b | 1127 | mutex_unlock(&dev->lock); |
f5762e44 MCC |
1128 | if (qc->type) |
1129 | return 0; | |
1130 | else | |
1131 | return -EINVAL; | |
9aeb4b05 | 1132 | } |
a6c2ba28 | 1133 | case VIDIOC_G_CTRL: |
9aeb4b05 MCC |
1134 | { |
1135 | struct v4l2_control *ctrl = arg; | |
1136 | int retval=-EINVAL; | |
a6c2ba28 | 1137 | |
9aeb4b05 MCC |
1138 | if (!dev->has_msp34xx) |
1139 | retval=em28xx_get_ctrl(dev, ctrl); | |
1140 | if (retval==-EINVAL) { | |
5a80415b | 1141 | mutex_lock(&dev->lock); |
f5762e44 | 1142 | em28xx_i2c_call_clients(dev,cmd,arg); |
5a80415b | 1143 | mutex_unlock(&dev->lock); |
f5762e44 | 1144 | return 0; |
9aeb4b05 MCC |
1145 | } else return retval; |
1146 | } | |
a6c2ba28 | 1147 | case VIDIOC_S_CTRL: |
9aeb4b05 MCC |
1148 | { |
1149 | struct v4l2_control *ctrl = arg; | |
1150 | u8 i; | |
5a80415b | 1151 | mutex_lock(&dev->lock); |
9aeb4b05 MCC |
1152 | |
1153 | if (!dev->has_msp34xx){ | |
1154 | for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) { | |
1155 | if (ctrl->id == em28xx_qctrl[i].id) { | |
5a80415b | 1156 | int retval=-EINVAL; |
9aeb4b05 MCC |
1157 | if (ctrl->value < |
1158 | em28xx_qctrl[i].minimum | |
1159 | || ctrl->value > | |
1160 | em28xx_qctrl[i].maximum) | |
1161 | return -ERANGE; | |
5a80415b SS |
1162 | retval = em28xx_set_ctrl(dev, ctrl); |
1163 | mutex_unlock(&dev->lock); | |
1164 | return retval; | |
c0477ad9 MCC |
1165 | } |
1166 | } | |
9aeb4b05 | 1167 | } |
a6c2ba28 | 1168 | |
f5762e44 | 1169 | em28xx_i2c_call_clients(dev,cmd,arg); |
5a80415b | 1170 | mutex_unlock(&dev->lock); |
f5762e44 | 1171 | return 0; |
9aeb4b05 MCC |
1172 | } |
1173 | /* --- tuner ioctls ------------------------------------------ */ | |
a6c2ba28 | 1174 | case VIDIOC_G_TUNER: |
9aeb4b05 MCC |
1175 | { |
1176 | struct v4l2_tuner *t = arg; | |
a6c2ba28 | 1177 | |
9aeb4b05 MCC |
1178 | if (0 != t->index) |
1179 | return -EINVAL; | |
a6c2ba28 | 1180 | |
9aeb4b05 MCC |
1181 | memset(t, 0, sizeof(*t)); |
1182 | strcpy(t->name, "Tuner"); | |
3593cab5 | 1183 | mutex_lock(&dev->lock); |
ab4cecf9 HV |
1184 | /* let clients fill in the remainder of this struct */ |
1185 | em28xx_i2c_call_clients(dev, cmd, t); | |
3593cab5 | 1186 | mutex_unlock(&dev->lock); |
9aeb4b05 MCC |
1187 | em28xx_videodbg("VIDIO_G_TUNER: signal=%x, afc=%x\n", t->signal, |
1188 | t->afc); | |
1189 | return 0; | |
1190 | } | |
a6c2ba28 | 1191 | case VIDIOC_S_TUNER: |
9aeb4b05 MCC |
1192 | { |
1193 | struct v4l2_tuner *t = arg; | |
a6c2ba28 | 1194 | |
9aeb4b05 MCC |
1195 | if (0 != t->index) |
1196 | return -EINVAL; | |
3593cab5 | 1197 | mutex_lock(&dev->lock); |
ab4cecf9 HV |
1198 | /* let clients handle this */ |
1199 | em28xx_i2c_call_clients(dev, cmd, t); | |
3593cab5 | 1200 | mutex_unlock(&dev->lock); |
9aeb4b05 MCC |
1201 | return 0; |
1202 | } | |
a6c2ba28 | 1203 | case VIDIOC_G_FREQUENCY: |
9aeb4b05 MCC |
1204 | { |
1205 | struct v4l2_frequency *f = arg; | |
a6c2ba28 | 1206 | |
9aeb4b05 MCC |
1207 | memset(f, 0, sizeof(*f)); |
1208 | f->type = V4L2_TUNER_ANALOG_TV; | |
1209 | f->frequency = dev->ctl_freq; | |
a6c2ba28 | 1210 | |
9aeb4b05 MCC |
1211 | return 0; |
1212 | } | |
a6c2ba28 | 1213 | case VIDIOC_S_FREQUENCY: |
9aeb4b05 MCC |
1214 | { |
1215 | struct v4l2_frequency *f = arg; | |
a6c2ba28 | 1216 | |
9aeb4b05 MCC |
1217 | if (0 != f->tuner) |
1218 | return -EINVAL; | |
a6c2ba28 | 1219 | |
9aeb4b05 MCC |
1220 | if (V4L2_TUNER_ANALOG_TV != f->type) |
1221 | return -EINVAL; | |
a6c2ba28 | 1222 | |
3593cab5 | 1223 | mutex_lock(&dev->lock); |
9aeb4b05 MCC |
1224 | dev->ctl_freq = f->frequency; |
1225 | em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f); | |
3593cab5 | 1226 | mutex_unlock(&dev->lock); |
9aeb4b05 MCC |
1227 | return 0; |
1228 | } | |
a6c2ba28 | 1229 | case VIDIOC_CROPCAP: |
9aeb4b05 MCC |
1230 | { |
1231 | struct v4l2_cropcap *cc = arg; | |
a6c2ba28 | 1232 | |
9aeb4b05 MCC |
1233 | if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1234 | return -EINVAL; | |
1235 | cc->bounds.left = 0; | |
1236 | cc->bounds.top = 0; | |
1237 | cc->bounds.width = dev->width; | |
1238 | cc->bounds.height = dev->height; | |
1239 | cc->defrect = cc->bounds; | |
1240 | cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */ | |
1241 | cc->pixelaspect.denominator = 59; | |
1242 | return 0; | |
1243 | } | |
a6c2ba28 | 1244 | case VIDIOC_STREAMON: |
9aeb4b05 MCC |
1245 | { |
1246 | int *type = arg; | |
a6c2ba28 | 1247 | |
9aeb4b05 MCC |
1248 | if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE |
1249 | || dev->io != IO_MMAP) | |
1250 | return -EINVAL; | |
a6c2ba28 | 1251 | |
9aeb4b05 MCC |
1252 | if (list_empty(&dev->inqueue)) |
1253 | return -EINVAL; | |
a6c2ba28 | 1254 | |
a225452e MCC |
1255 | if (unlikely(res_get(fh) < 0)) |
1256 | return -EBUSY; | |
1257 | ||
9aeb4b05 | 1258 | dev->stream = STREAM_ON; /* FIXME: Start video capture here? */ |
a6c2ba28 | 1259 | |
9aeb4b05 | 1260 | em28xx_videodbg("VIDIOC_STREAMON: starting stream\n"); |
a6c2ba28 | 1261 | |
9aeb4b05 MCC |
1262 | return 0; |
1263 | } | |
a6c2ba28 | 1264 | case VIDIOC_STREAMOFF: |
9aeb4b05 MCC |
1265 | { |
1266 | int *type = arg; | |
1267 | int ret; | |
a6c2ba28 | 1268 | |
9aeb4b05 MCC |
1269 | if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE |
1270 | || dev->io != IO_MMAP) | |
1271 | return -EINVAL; | |
a6c2ba28 | 1272 | |
5a80415b | 1273 | mutex_lock(&dev->lock); |
9aeb4b05 MCC |
1274 | if (dev->stream == STREAM_ON) { |
1275 | em28xx_videodbg ("VIDIOC_STREAMOFF: interrupting stream\n"); | |
5a80415b SS |
1276 | if ((ret = em28xx_stream_interrupt(dev))){ |
1277 | mutex_unlock(&dev->lock); | |
9aeb4b05 | 1278 | return ret; |
5a80415b | 1279 | } |
a6c2ba28 | 1280 | } |
a3a048ce | 1281 | |
9aeb4b05 | 1282 | em28xx_empty_framequeues(dev); |
5a80415b | 1283 | mutex_unlock(&dev->lock); |
9aeb4b05 MCC |
1284 | |
1285 | return 0; | |
1286 | } | |
a6c2ba28 | 1287 | default: |
1288 | return v4l_compat_translate_ioctl(inode, filp, cmd, arg, | |
1289 | driver_ioctl); | |
1290 | } | |
1291 | return 0; | |
1292 | } | |
1293 | ||
1294 | /* | |
3acf2809 | 1295 | * em28xx_v4l2_do_ioctl() |
a6c2ba28 | 1296 | * This function is _not_ called directly, but from |
3acf2809 | 1297 | * em28xx_v4l2_ioctl. Userspace |
a6c2ba28 | 1298 | * copying is done already, arg is a kernel pointer. |
1299 | */ | |
3acf2809 | 1300 | static int em28xx_video_do_ioctl(struct inode *inode, struct file *filp, |
a6c2ba28 | 1301 | unsigned int cmd, void *arg) |
1302 | { | |
a3a048ce MCC |
1303 | struct em28xx_fh *fh = filp->private_data; |
1304 | struct em28xx *dev = fh->dev; | |
a6c2ba28 | 1305 | |
1306 | if (!dev) | |
1307 | return -ENODEV; | |
1308 | ||
1309 | if (video_debug > 1) | |
5e453dc7 | 1310 | v4l_print_ioctl(dev->name,cmd); |
a6c2ba28 | 1311 | |
1312 | switch (cmd) { | |
1313 | ||
1314 | /* --- capabilities ------------------------------------------ */ | |
1315 | case VIDIOC_QUERYCAP: | |
1316 | { | |
9aeb4b05 MCC |
1317 | struct v4l2_capability *cap = arg; |
1318 | ||
1319 | memset(cap, 0, sizeof(*cap)); | |
1320 | strlcpy(cap->driver, "em28xx", sizeof(cap->driver)); | |
1321 | strlcpy(cap->card, em28xx_boards[dev->model].name, | |
1322 | sizeof(cap->card)); | |
1323 | strlcpy(cap->bus_info, dev->udev->dev.bus_id, | |
1324 | sizeof(cap->bus_info)); | |
1325 | cap->version = EM28XX_VERSION_CODE; | |
1326 | cap->capabilities = | |
1327 | V4L2_CAP_SLICED_VBI_CAPTURE | | |
1328 | V4L2_CAP_VIDEO_CAPTURE | | |
1329 | V4L2_CAP_AUDIO | | |
1330 | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; | |
1331 | if (dev->has_tuner) | |
1332 | cap->capabilities |= V4L2_CAP_TUNER; | |
1333 | return 0; | |
1334 | } | |
1335 | /* --- capture ioctls ---------------------------------------- */ | |
a6c2ba28 | 1336 | case VIDIOC_ENUM_FMT: |
9aeb4b05 MCC |
1337 | { |
1338 | struct v4l2_fmtdesc *fmtd = arg; | |
a6c2ba28 | 1339 | |
9aeb4b05 MCC |
1340 | if (fmtd->index != 0) |
1341 | return -EINVAL; | |
1342 | memset(fmtd, 0, sizeof(*fmtd)); | |
1343 | fmtd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1344 | strcpy(fmtd->description, "Packed YUY2"); | |
1345 | fmtd->pixelformat = V4L2_PIX_FMT_YUYV; | |
1346 | memset(fmtd->reserved, 0, sizeof(fmtd->reserved)); | |
1347 | return 0; | |
1348 | } | |
a6c2ba28 | 1349 | case VIDIOC_G_FMT: |
5a80415b SS |
1350 | { |
1351 | int retval; | |
1352 | mutex_lock(&dev->lock); | |
1353 | retval = em28xx_get_fmt(dev, (struct v4l2_format *) arg); | |
1354 | mutex_unlock(&dev->lock); | |
1355 | return retval; | |
a6c2ba28 | 1356 | |
5a80415b | 1357 | } |
a6c2ba28 | 1358 | case VIDIOC_TRY_FMT: |
1359 | case VIDIOC_S_FMT: | |
5a80415b SS |
1360 | { |
1361 | int retval; | |
1362 | mutex_lock(&dev->lock); | |
1363 | retval = em28xx_set_fmt(dev, cmd, (struct v4l2_format *)arg); | |
1364 | mutex_unlock(&dev->lock); | |
1365 | return retval; | |
1366 | } | |
a6c2ba28 | 1367 | |
a6c2ba28 | 1368 | case VIDIOC_REQBUFS: |
9aeb4b05 MCC |
1369 | { |
1370 | struct v4l2_requestbuffers *rb = arg; | |
1371 | u32 i; | |
1372 | int ret; | |
a6c2ba28 | 1373 | |
9aeb4b05 MCC |
1374 | if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
1375 | rb->memory != V4L2_MEMORY_MMAP) | |
1376 | return -EINVAL; | |
a6c2ba28 | 1377 | |
9aeb4b05 MCC |
1378 | if (dev->io == IO_READ) { |
1379 | em28xx_videodbg ("method is set to read;" | |
1380 | " close and open the device again to" | |
1381 | " choose the mmap I/O method\n"); | |
1382 | return -EINVAL; | |
1383 | } | |
a6c2ba28 | 1384 | |
9aeb4b05 MCC |
1385 | for (i = 0; i < dev->num_frames; i++) |
1386 | if (dev->frame[i].vma_use_count) { | |
1387 | em28xx_videodbg ("VIDIOC_REQBUFS failed; previous buffers are still mapped\n"); | |
1388 | return -EINVAL; | |
a6c2ba28 | 1389 | } |
1390 | ||
5a80415b | 1391 | mutex_lock(&dev->lock); |
9aeb4b05 MCC |
1392 | if (dev->stream == STREAM_ON) { |
1393 | em28xx_videodbg("VIDIOC_REQBUFS: interrupting stream\n"); | |
5a80415b SS |
1394 | if ((ret = em28xx_stream_interrupt(dev))){ |
1395 | mutex_unlock(&dev->lock); | |
9aeb4b05 | 1396 | return ret; |
5a80415b | 1397 | } |
9aeb4b05 | 1398 | } |
a6c2ba28 | 1399 | |
9aeb4b05 | 1400 | em28xx_empty_framequeues(dev); |
a6c2ba28 | 1401 | |
9aeb4b05 MCC |
1402 | em28xx_release_buffers(dev); |
1403 | if (rb->count) | |
1404 | rb->count = | |
1405 | em28xx_request_buffers(dev, rb->count); | |
a6c2ba28 | 1406 | |
9aeb4b05 | 1407 | dev->frame_current = NULL; |
a6c2ba28 | 1408 | |
9aeb4b05 MCC |
1409 | em28xx_videodbg ("VIDIOC_REQBUFS: setting io method to mmap: num bufs %i\n", |
1410 | rb->count); | |
1411 | dev->io = rb->count ? IO_MMAP : IO_NONE; | |
5a80415b | 1412 | mutex_unlock(&dev->lock); |
9aeb4b05 MCC |
1413 | return 0; |
1414 | } | |
a6c2ba28 | 1415 | case VIDIOC_QUERYBUF: |
9aeb4b05 MCC |
1416 | { |
1417 | struct v4l2_buffer *b = arg; | |
a6c2ba28 | 1418 | |
9aeb4b05 MCC |
1419 | if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
1420 | b->index >= dev->num_frames || dev->io != IO_MMAP) | |
1421 | return -EINVAL; | |
a6c2ba28 | 1422 | |
9aeb4b05 | 1423 | memcpy(b, &dev->frame[b->index].buf, sizeof(*b)); |
a6c2ba28 | 1424 | |
9aeb4b05 MCC |
1425 | if (dev->frame[b->index].vma_use_count) { |
1426 | b->flags |= V4L2_BUF_FLAG_MAPPED; | |
a6c2ba28 | 1427 | } |
9aeb4b05 MCC |
1428 | if (dev->frame[b->index].state == F_DONE) |
1429 | b->flags |= V4L2_BUF_FLAG_DONE; | |
1430 | else if (dev->frame[b->index].state != F_UNUSED) | |
1431 | b->flags |= V4L2_BUF_FLAG_QUEUED; | |
1432 | return 0; | |
1433 | } | |
a6c2ba28 | 1434 | case VIDIOC_QBUF: |
9aeb4b05 MCC |
1435 | { |
1436 | struct v4l2_buffer *b = arg; | |
1437 | unsigned long lock_flags; | |
a6c2ba28 | 1438 | |
9aeb4b05 MCC |
1439 | if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
1440 | b->index >= dev->num_frames || dev->io != IO_MMAP) { | |
1441 | return -EINVAL; | |
1442 | } | |
a6c2ba28 | 1443 | |
9aeb4b05 MCC |
1444 | if (dev->frame[b->index].state != F_UNUSED) { |
1445 | return -EAGAIN; | |
1446 | } | |
1447 | dev->frame[b->index].state = F_QUEUED; | |
a6c2ba28 | 1448 | |
9aeb4b05 MCC |
1449 | /* add frame to fifo */ |
1450 | spin_lock_irqsave(&dev->queue_lock, lock_flags); | |
1451 | list_add_tail(&dev->frame[b->index].frame, | |
1452 | &dev->inqueue); | |
1453 | spin_unlock_irqrestore(&dev->queue_lock, lock_flags); | |
a6c2ba28 | 1454 | |
9aeb4b05 MCC |
1455 | return 0; |
1456 | } | |
a6c2ba28 | 1457 | case VIDIOC_DQBUF: |
9aeb4b05 MCC |
1458 | { |
1459 | struct v4l2_buffer *b = arg; | |
1460 | struct em28xx_frame_t *f; | |
1461 | unsigned long lock_flags; | |
1462 | int ret = 0; | |
a6c2ba28 | 1463 | |
9aeb4b05 MCC |
1464 | if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE |
1465 | || dev->io != IO_MMAP) | |
1466 | return -EINVAL; | |
a6c2ba28 | 1467 | |
9aeb4b05 MCC |
1468 | if (list_empty(&dev->outqueue)) { |
1469 | if (dev->stream == STREAM_OFF) | |
1470 | return -EINVAL; | |
1471 | if (filp->f_flags & O_NONBLOCK) | |
1472 | return -EAGAIN; | |
1473 | ret = wait_event_interruptible | |
1474 | (dev->wait_frame, | |
1475 | (!list_empty(&dev->outqueue)) || | |
1476 | (dev->state & DEV_DISCONNECTED)); | |
1477 | if (ret) | |
1478 | return ret; | |
1479 | if (dev->state & DEV_DISCONNECTED) | |
1480 | return -ENODEV; | |
1481 | } | |
a6c2ba28 | 1482 | |
9aeb4b05 MCC |
1483 | spin_lock_irqsave(&dev->queue_lock, lock_flags); |
1484 | f = list_entry(dev->outqueue.next, | |
1485 | struct em28xx_frame_t, frame); | |
1486 | list_del(dev->outqueue.next); | |
1487 | spin_unlock_irqrestore(&dev->queue_lock, lock_flags); | |
a6c2ba28 | 1488 | |
9aeb4b05 MCC |
1489 | f->state = F_UNUSED; |
1490 | memcpy(b, &f->buf, sizeof(*b)); | |
a6c2ba28 | 1491 | |
9aeb4b05 MCC |
1492 | if (f->vma_use_count) |
1493 | b->flags |= V4L2_BUF_FLAG_MAPPED; | |
a6c2ba28 | 1494 | |
9aeb4b05 MCC |
1495 | return 0; |
1496 | } | |
a6c2ba28 | 1497 | default: |
3acf2809 MCC |
1498 | return em28xx_do_ioctl(inode, filp, dev, cmd, arg, |
1499 | em28xx_video_do_ioctl); | |
a6c2ba28 | 1500 | } |
1501 | return 0; | |
1502 | } | |
1503 | ||
1504 | /* | |
3acf2809 MCC |
1505 | * em28xx_v4l2_ioctl() |
1506 | * handle v4l2 ioctl the main action happens in em28xx_v4l2_do_ioctl() | |
a6c2ba28 | 1507 | */ |
3acf2809 | 1508 | static int em28xx_v4l2_ioctl(struct inode *inode, struct file *filp, |
a6c2ba28 | 1509 | unsigned int cmd, unsigned long arg) |
1510 | { | |
a6c2ba28 | 1511 | int ret = 0; |
a3a048ce MCC |
1512 | struct em28xx_fh *fh = filp->private_data; |
1513 | struct em28xx *dev = fh->dev; | |
a6c2ba28 | 1514 | |
a6c2ba28 | 1515 | if (dev->state & DEV_DISCONNECTED) { |
3acf2809 | 1516 | em28xx_errdev("v4l2 ioctl: device not present\n"); |
a6c2ba28 | 1517 | return -ENODEV; |
1518 | } | |
1519 | ||
1520 | if (dev->state & DEV_MISCONFIGURED) { | |
3acf2809 | 1521 | em28xx_errdev |
a6c2ba28 | 1522 | ("v4l2 ioctl: device is misconfigured; close and open it again\n"); |
a6c2ba28 | 1523 | return -EIO; |
1524 | } | |
1525 | ||
3acf2809 | 1526 | ret = video_usercopy(inode, filp, cmd, arg, em28xx_video_do_ioctl); |
a6c2ba28 | 1527 | |
a6c2ba28 | 1528 | return ret; |
1529 | } | |
1530 | ||
fa027c2a | 1531 | static const struct file_operations em28xx_v4l_fops = { |
a6c2ba28 | 1532 | .owner = THIS_MODULE, |
3acf2809 MCC |
1533 | .open = em28xx_v4l2_open, |
1534 | .release = em28xx_v4l2_close, | |
1535 | .ioctl = em28xx_v4l2_ioctl, | |
1536 | .read = em28xx_v4l2_read, | |
1537 | .poll = em28xx_v4l2_poll, | |
1538 | .mmap = em28xx_v4l2_mmap, | |
a6c2ba28 | 1539 | .llseek = no_llseek, |
17cbe2e5 MCC |
1540 | .compat_ioctl = v4l_compat_ioctl32, |
1541 | ||
a6c2ba28 | 1542 | }; |
1543 | ||
1544 | /******************************** usb interface *****************************************/ | |
1545 | ||
1546 | /* | |
3acf2809 | 1547 | * em28xx_init_dev() |
a6c2ba28 | 1548 | * allocates and inits the device structs, registers i2c bus and v4l device |
1549 | */ | |
3acf2809 | 1550 | static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev, |
03910cc3 | 1551 | int minor) |
a6c2ba28 | 1552 | { |
3acf2809 | 1553 | struct em28xx *dev = *devhandle; |
a6c2ba28 | 1554 | int retval = -ENOMEM; |
1555 | int errCode, i; | |
1556 | unsigned int maxh, maxw; | |
a6c2ba28 | 1557 | |
a6c2ba28 | 1558 | dev->udev = udev; |
3593cab5 | 1559 | mutex_init(&dev->lock); |
a3a048ce | 1560 | spin_lock_init(&dev->queue_lock); |
a6c2ba28 | 1561 | init_waitqueue_head(&dev->open); |
a3a048ce MCC |
1562 | init_waitqueue_head(&dev->wait_frame); |
1563 | init_waitqueue_head(&dev->wait_stream); | |
a6c2ba28 | 1564 | |
3acf2809 MCC |
1565 | dev->em28xx_write_regs = em28xx_write_regs; |
1566 | dev->em28xx_read_reg = em28xx_read_reg; | |
1567 | dev->em28xx_read_reg_req_len = em28xx_read_reg_req_len; | |
1568 | dev->em28xx_write_regs_req = em28xx_write_regs_req; | |
1569 | dev->em28xx_read_reg_req = em28xx_read_reg_req; | |
fad7b958 | 1570 | dev->is_em2800 = em28xx_boards[dev->model].is_em2800; |
a6c2ba28 | 1571 | |
1572 | /* setup video picture settings for saa7113h */ | |
1573 | memset(&dev->vpic, 0, sizeof(dev->vpic)); | |
1574 | dev->vpic.colour = 128 << 8; | |
1575 | dev->vpic.hue = 128 << 8; | |
1576 | dev->vpic.brightness = 128 << 8; | |
1577 | dev->vpic.contrast = 192 << 8; | |
1578 | dev->vpic.whiteness = 128 << 8; /* This one isn't used */ | |
1579 | dev->vpic.depth = 16; | |
1580 | dev->vpic.palette = VIDEO_PALETTE_YUV422; | |
1581 | ||
a94e95b4 | 1582 | em28xx_pre_card_setup(dev); |
03910cc3 | 1583 | |
3acf2809 | 1584 | errCode = em28xx_config(dev); |
a6c2ba28 | 1585 | if (errCode) { |
3acf2809 | 1586 | em28xx_errdev("error configuring device\n"); |
03910cc3 | 1587 | em28xx_devused &= ~(1<<dev->devno); |
7c908fbb | 1588 | kfree(dev); |
a6c2ba28 | 1589 | return -ENOMEM; |
1590 | } | |
1591 | ||
a6c2ba28 | 1592 | /* register i2c bus */ |
3acf2809 | 1593 | em28xx_i2c_register(dev); |
a6c2ba28 | 1594 | |
1595 | /* Do board specific init and eeprom reading */ | |
3acf2809 | 1596 | em28xx_card_setup(dev); |
a6c2ba28 | 1597 | |
1598 | /* configure the device */ | |
3acf2809 | 1599 | em28xx_config_i2c(dev); |
a6c2ba28 | 1600 | |
03910cc3 MCC |
1601 | for (i = 0; i < TVNORMS; i++) |
1602 | if (em28xx_boards[dev->model].norm == tvnorms[i].mode) | |
1603 | break; | |
1604 | if (i == TVNORMS) | |
1605 | i = 0; | |
1606 | ||
1607 | dev->tvnorm = &tvnorms[i]; /* set default norm */ | |
1608 | ||
1609 | em28xx_videodbg("tvnorm=%s\n", dev->tvnorm->name); | |
1610 | ||
1611 | maxw = norm_maxw(dev); | |
1612 | maxh = norm_maxh(dev); | |
1613 | ||
1614 | /* set default image size */ | |
1615 | dev->width = maxw; | |
1616 | dev->height = maxh; | |
1617 | dev->interlaced = EM28XX_INTERLACED_DEFAULT; | |
1618 | dev->field_size = dev->width * dev->height; | |
1619 | dev->frame_size = | |
1620 | dev->interlaced ? dev->field_size << 1 : dev->field_size; | |
1621 | dev->bytesperline = dev->width * 2; | |
1622 | dev->hscale = 0; | |
1623 | dev->vscale = 0; | |
1624 | dev->ctl_input = 2; | |
1625 | ||
3acf2809 | 1626 | errCode = em28xx_config(dev); |
a6c2ba28 | 1627 | |
a6c2ba28 | 1628 | /* allocate and fill v4l2 device struct */ |
1629 | dev->vdev = video_device_alloc(); | |
1630 | if (NULL == dev->vdev) { | |
3acf2809 | 1631 | em28xx_errdev("cannot allocate video_device.\n"); |
e5589bef | 1632 | em28xx_devused&=~(1<<dev->devno); |
7c908fbb | 1633 | kfree(dev); |
e5589bef MCC |
1634 | return -ENOMEM; |
1635 | } | |
1636 | ||
1637 | dev->vbi_dev = video_device_alloc(); | |
1638 | if (NULL == dev->vbi_dev) { | |
1639 | em28xx_errdev("cannot allocate video_device.\n"); | |
1640 | kfree(dev->vdev); | |
e5589bef | 1641 | em28xx_devused&=~(1<<dev->devno); |
7c908fbb | 1642 | kfree(dev); |
a6c2ba28 | 1643 | return -ENOMEM; |
1644 | } | |
1645 | ||
e5589bef MCC |
1646 | /* Fills VBI device info */ |
1647 | dev->vbi_dev->type = VFL_TYPE_VBI; | |
e5589bef MCC |
1648 | dev->vbi_dev->fops = &em28xx_v4l_fops; |
1649 | dev->vbi_dev->minor = -1; | |
1650 | dev->vbi_dev->dev = &dev->udev->dev; | |
1651 | dev->vbi_dev->release = video_device_release; | |
1652 | snprintf(dev->vbi_dev->name, sizeof(dev->vbi_dev->name), "%s#%d %s", | |
1653 | "em28xx",dev->devno,"vbi"); | |
1654 | ||
1655 | /* Fills CAPTURE device info */ | |
a6c2ba28 | 1656 | dev->vdev->type = VID_TYPE_CAPTURE; |
1657 | if (dev->has_tuner) | |
1658 | dev->vdev->type |= VID_TYPE_TUNER; | |
3acf2809 | 1659 | dev->vdev->fops = &em28xx_v4l_fops; |
a6c2ba28 | 1660 | dev->vdev->minor = -1; |
1661 | dev->vdev->dev = &dev->udev->dev; | |
1662 | dev->vdev->release = video_device_release; | |
e5589bef MCC |
1663 | snprintf(dev->vdev->name, sizeof(dev->vbi_dev->name), "%s#%d %s", |
1664 | "em28xx",dev->devno,"video"); | |
1665 | ||
3acf2809 | 1666 | list_add_tail(&dev->devlist,&em28xx_devlist); |
a6c2ba28 | 1667 | |
5a80415b SS |
1668 | |
1669 | if (dev->has_msp34xx) { | |
1670 | /* Send a reset to other chips via gpio */ | |
1671 | em28xx_write_regs_req(dev, 0x00, 0x08, "\xf7", 1); | |
1672 | msleep(3); | |
1673 | em28xx_write_regs_req(dev, 0x00, 0x08, "\xff", 1); | |
1674 | msleep(3); | |
1675 | ||
1676 | } | |
1677 | video_mux(dev, 0); | |
1678 | ||
a6c2ba28 | 1679 | /* register v4l2 device */ |
e5589bef MCC |
1680 | if ((retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER, |
1681 | video_nr[dev->devno]))) { | |
3acf2809 | 1682 | em28xx_errdev("unable to register video device (error=%i).\n", |
a6c2ba28 | 1683 | retval); |
3593cab5 | 1684 | mutex_unlock(&dev->lock); |
9c75541f | 1685 | list_del(&dev->devlist); |
a6c2ba28 | 1686 | video_device_release(dev->vdev); |
e5589bef | 1687 | em28xx_devused&=~(1<<dev->devno); |
7c908fbb | 1688 | kfree(dev); |
a6c2ba28 | 1689 | return -ENODEV; |
1690 | } | |
e5589bef MCC |
1691 | |
1692 | if (video_register_device(dev->vbi_dev, VFL_TYPE_VBI, | |
1693 | vbi_nr[dev->devno]) < 0) { | |
1694 | printk("unable to register vbi device\n"); | |
3593cab5 | 1695 | mutex_unlock(&dev->lock); |
e5589bef MCC |
1696 | list_del(&dev->devlist); |
1697 | video_device_release(dev->vbi_dev); | |
1698 | video_device_release(dev->vdev); | |
e5589bef | 1699 | em28xx_devused&=~(1<<dev->devno); |
7c908fbb | 1700 | kfree(dev); |
e5589bef MCC |
1701 | return -ENODEV; |
1702 | } else { | |
1703 | printk("registered VBI\n"); | |
1704 | } | |
1705 | ||
e5589bef MCC |
1706 | em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n", |
1707 | dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN, | |
1708 | dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN); | |
a6c2ba28 | 1709 | |
a6c2ba28 | 1710 | return 0; |
1711 | } | |
1712 | ||
1713 | /* | |
3acf2809 | 1714 | * em28xx_usb_probe() |
a6c2ba28 | 1715 | * checks for supported devices |
1716 | */ | |
3acf2809 | 1717 | static int em28xx_usb_probe(struct usb_interface *interface, |
a6c2ba28 | 1718 | const struct usb_device_id *id) |
1719 | { | |
1720 | const struct usb_endpoint_descriptor *endpoint; | |
1721 | struct usb_device *udev; | |
9d4d9c05 | 1722 | struct usb_interface *uif; |
3acf2809 | 1723 | struct em28xx *dev = NULL; |
a6c2ba28 | 1724 | int retval = -ENODEV; |
03910cc3 | 1725 | int i, nr, ifnum; |
a6c2ba28 | 1726 | |
1727 | udev = usb_get_dev(interface_to_usbdev(interface)); | |
d5e52653 MCC |
1728 | ifnum = interface->altsetting[0].desc.bInterfaceNumber; |
1729 | ||
e5589bef MCC |
1730 | /* Check to see next free device and mark as used */ |
1731 | nr=find_first_zero_bit(&em28xx_devused,EM28XX_MAXBOARDS); | |
1732 | em28xx_devused|=1<<nr; | |
a6c2ba28 | 1733 | |
596d92d5 | 1734 | /* Don't register audio interfaces */ |
91cad0f2 | 1735 | if (interface->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) { |
3acf2809 | 1736 | em28xx_err(DRIVER_NAME " audio device (%04x:%04x): interface %i, class %i\n", |
91cad0f2 MCC |
1737 | udev->descriptor.idVendor,udev->descriptor.idProduct, |
1738 | ifnum, | |
1739 | interface->altsetting[0].desc.bInterfaceClass); | |
e5589bef MCC |
1740 | |
1741 | em28xx_devused&=~(1<<nr); | |
596d92d5 | 1742 | return -ENODEV; |
91cad0f2 MCC |
1743 | } |
1744 | ||
3acf2809 | 1745 | em28xx_err(DRIVER_NAME " new video device (%04x:%04x): interface %i, class %i\n", |
91cad0f2 MCC |
1746 | udev->descriptor.idVendor,udev->descriptor.idProduct, |
1747 | ifnum, | |
1748 | interface->altsetting[0].desc.bInterfaceClass); | |
596d92d5 | 1749 | |
d5e52653 MCC |
1750 | endpoint = &interface->cur_altsetting->endpoint[1].desc; |
1751 | ||
59c51591 | 1752 | /* check if the device has the iso in endpoint at the correct place */ |
a6c2ba28 | 1753 | if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != |
1754 | USB_ENDPOINT_XFER_ISOC) { | |
3acf2809 | 1755 | em28xx_err(DRIVER_NAME " probing error: endpoint is non-ISO endpoint!\n"); |
e5589bef | 1756 | em28xx_devused&=~(1<<nr); |
a6c2ba28 | 1757 | return -ENODEV; |
1758 | } | |
1759 | if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) { | |
3acf2809 | 1760 | em28xx_err(DRIVER_NAME " probing error: endpoint is ISO OUT endpoint!\n"); |
e5589bef | 1761 | em28xx_devused&=~(1<<nr); |
a6c2ba28 | 1762 | return -ENODEV; |
1763 | } | |
1764 | ||
19478843 | 1765 | if (nr >= EM28XX_MAXBOARDS) { |
9d4d9c05 | 1766 | printk (DRIVER_NAME ": Supports only %i em28xx boards.\n",EM28XX_MAXBOARDS); |
e5589bef | 1767 | em28xx_devused&=~(1<<nr); |
596d92d5 MCC |
1768 | return -ENOMEM; |
1769 | } | |
1770 | ||
1771 | /* allocate memory for our device state and initialize it */ | |
7408187d | 1772 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
596d92d5 | 1773 | if (dev == NULL) { |
3acf2809 | 1774 | em28xx_err(DRIVER_NAME ": out of memory!\n"); |
e5589bef | 1775 | em28xx_devused&=~(1<<nr); |
596d92d5 MCC |
1776 | return -ENOMEM; |
1777 | } | |
596d92d5 | 1778 | |
e5589bef | 1779 | snprintf(dev->name, 29, "em28xx #%d", nr); |
03910cc3 MCC |
1780 | dev->devno = nr; |
1781 | dev->model = id->driver_info; | |
e5589bef | 1782 | |
9d4d9c05 MCC |
1783 | /* compute alternate max packet sizes */ |
1784 | uif = udev->actconfig->interface[0]; | |
1785 | ||
1786 | dev->num_alt=uif->num_altsetting; | |
e5589bef | 1787 | em28xx_info("Alternate settings: %i\n",dev->num_alt); |
9d4d9c05 MCC |
1788 | // dev->alt_max_pkt_size = kmalloc(sizeof(*dev->alt_max_pkt_size)* |
1789 | dev->alt_max_pkt_size = kmalloc(32* | |
1790 | dev->num_alt,GFP_KERNEL); | |
1791 | if (dev->alt_max_pkt_size == NULL) { | |
e5589bef MCC |
1792 | em28xx_errdev("out of memory!\n"); |
1793 | em28xx_devused&=~(1<<nr); | |
1207cf84 | 1794 | kfree(dev); |
9d4d9c05 MCC |
1795 | return -ENOMEM; |
1796 | } | |
1797 | ||
1798 | for (i = 0; i < dev->num_alt ; i++) { | |
1799 | u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc. | |
1800 | wMaxPacketSize); | |
1801 | dev->alt_max_pkt_size[i] = | |
1802 | (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1); | |
e5589bef | 1803 | em28xx_info("Alternate setting %i, max size= %i\n",i, |
9d4d9c05 MCC |
1804 | dev->alt_max_pkt_size[i]); |
1805 | } | |
1806 | ||
3acf2809 | 1807 | if ((card[nr]>=0)&&(card[nr]<em28xx_bcount)) |
03910cc3 | 1808 | dev->model = card[nr]; |
596d92d5 | 1809 | |
a6c2ba28 | 1810 | /* allocate device struct */ |
03910cc3 | 1811 | retval = em28xx_init_dev(&dev, udev, nr); |
a6c2ba28 | 1812 | if (retval) |
1813 | return retval; | |
1814 | ||
03910cc3 | 1815 | em28xx_info("Found %s\n", em28xx_boards[dev->model].name); |
a6c2ba28 | 1816 | |
1817 | /* save our data pointer in this interface device */ | |
1818 | usb_set_intfdata(interface, dev); | |
1819 | return 0; | |
1820 | } | |
1821 | ||
1822 | /* | |
3acf2809 | 1823 | * em28xx_usb_disconnect() |
a6c2ba28 | 1824 | * called when the device gets diconencted |
1825 | * video device will be unregistered on v4l2_close in case it is still open | |
1826 | */ | |
3acf2809 | 1827 | static void em28xx_usb_disconnect(struct usb_interface *interface) |
a6c2ba28 | 1828 | { |
5a80415b SS |
1829 | struct em28xx *dev; |
1830 | ||
1831 | dev = usb_get_intfdata(interface); | |
a6c2ba28 | 1832 | usb_set_intfdata(interface, NULL); |
1833 | ||
1834 | if (!dev) | |
1835 | return; | |
1836 | ||
5a80415b | 1837 | em28xx_info("disconnecting %s\n", dev->vdev->name); |
a6c2ba28 | 1838 | |
5a80415b | 1839 | /* wait until all current v4l2 io is finished then deallocate resources */ |
3593cab5 | 1840 | mutex_lock(&dev->lock); |
a6c2ba28 | 1841 | |
a6c2ba28 | 1842 | wake_up_interruptible_all(&dev->open); |
1843 | ||
1844 | if (dev->users) { | |
3acf2809 | 1845 | em28xx_warn |
a6c2ba28 | 1846 | ("device /dev/video%d is open! Deregistration and memory " |
e5589bef MCC |
1847 | "deallocation are deferred on close.\n", |
1848 | dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN); | |
1849 | ||
a6c2ba28 | 1850 | dev->state |= DEV_MISCONFIGURED; |
3acf2809 | 1851 | em28xx_uninit_isoc(dev); |
a6c2ba28 | 1852 | dev->state |= DEV_DISCONNECTED; |
1853 | wake_up_interruptible(&dev->wait_frame); | |
1854 | wake_up_interruptible(&dev->wait_stream); | |
1855 | } else { | |
1856 | dev->state |= DEV_DISCONNECTED; | |
3acf2809 | 1857 | em28xx_release_resources(dev); |
a6c2ba28 | 1858 | } |
1859 | ||
5a80415b | 1860 | |
3593cab5 | 1861 | mutex_unlock(&dev->lock); |
a6c2ba28 | 1862 | |
9d4d9c05 MCC |
1863 | if (!dev->users) { |
1864 | kfree(dev->alt_max_pkt_size); | |
a6c2ba28 | 1865 | kfree(dev); |
9d4d9c05 | 1866 | } |
a6c2ba28 | 1867 | |
a6c2ba28 | 1868 | } |
1869 | ||
3acf2809 | 1870 | static struct usb_driver em28xx_usb_driver = { |
3acf2809 MCC |
1871 | .name = "em28xx", |
1872 | .probe = em28xx_usb_probe, | |
1873 | .disconnect = em28xx_usb_disconnect, | |
1874 | .id_table = em28xx_id_table, | |
a6c2ba28 | 1875 | }; |
1876 | ||
3acf2809 | 1877 | static int __init em28xx_module_init(void) |
a6c2ba28 | 1878 | { |
1879 | int result; | |
1880 | ||
1881 | printk(KERN_INFO DRIVER_NAME " v4l2 driver version %d.%d.%d loaded\n", | |
3acf2809 MCC |
1882 | (EM28XX_VERSION_CODE >> 16) & 0xff, |
1883 | (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff); | |
a6c2ba28 | 1884 | #ifdef SNAPSHOT |
1885 | printk(KERN_INFO DRIVER_NAME " snapshot date %04d-%02d-%02d\n", | |
1886 | SNAPSHOT / 10000, (SNAPSHOT / 100) % 100, SNAPSHOT % 100); | |
1887 | #endif | |
1888 | ||
1889 | /* register this driver with the USB subsystem */ | |
3acf2809 | 1890 | result = usb_register(&em28xx_usb_driver); |
a6c2ba28 | 1891 | if (result) |
3acf2809 | 1892 | em28xx_err(DRIVER_NAME |
a6c2ba28 | 1893 | " usb_register failed. Error number %d.\n", result); |
1894 | ||
1895 | return result; | |
1896 | } | |
1897 | ||
3acf2809 | 1898 | static void __exit em28xx_module_exit(void) |
a6c2ba28 | 1899 | { |
1900 | /* deregister this driver with the USB subsystem */ | |
3acf2809 | 1901 | usb_deregister(&em28xx_usb_driver); |
a6c2ba28 | 1902 | } |
1903 | ||
3acf2809 MCC |
1904 | module_init(em28xx_module_init); |
1905 | module_exit(em28xx_module_exit); |