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