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> |
a6c2ba28 | 35 | #include <linux/video_decoder.h> |
1e4baed3 | 36 | #include <linux/mutex.h> |
a6c2ba28 | 37 | |
f7abcd38 | 38 | #include "em28xx.h" |
d5e52653 | 39 | #include <media/tuner.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 int tuner = -1; |
74 | module_param(tuner, int, 0444); | |
75 | MODULE_PARM_DESC(tuner, "tuner type"); | |
76 | ||
77 | static unsigned int video_debug = 0; | |
78 | module_param(video_debug,int,0644); | |
79 | MODULE_PARM_DESC(video_debug,"enable debug messages [video]"); | |
80 | ||
e5589bef MCC |
81 | /* Bitmask marking allocated devices from 0 to EM28XX_MAXBOARDS */ |
82 | static unsigned long em28xx_devused; | |
83 | ||
a6c2ba28 | 84 | /* supported tv norms */ |
3acf2809 | 85 | static struct em28xx_tvnorm tvnorms[] = { |
a6c2ba28 | 86 | { |
87 | .name = "PAL", | |
88 | .id = V4L2_STD_PAL, | |
89 | .mode = VIDEO_MODE_PAL, | |
90 | }, { | |
91 | .name = "NTSC", | |
92 | .id = V4L2_STD_NTSC, | |
93 | .mode = VIDEO_MODE_NTSC, | |
94 | }, { | |
95 | .name = "SECAM", | |
96 | .id = V4L2_STD_SECAM, | |
97 | .mode = VIDEO_MODE_SECAM, | |
98 | }, { | |
99 | .name = "PAL-M", | |
100 | .id = V4L2_STD_PAL_M, | |
101 | .mode = VIDEO_MODE_PAL, | |
102 | } | |
103 | }; | |
104 | ||
105 | #define TVNORMS ARRAY_SIZE(tvnorms) | |
106 | ||
107 | /* supported controls */ | |
c0477ad9 | 108 | /* Common to all boards */ |
3acf2809 | 109 | static struct v4l2_queryctrl em28xx_qctrl[] = { |
c0477ad9 MCC |
110 | { |
111 | .id = V4L2_CID_AUDIO_VOLUME, | |
112 | .type = V4L2_CTRL_TYPE_INTEGER, | |
113 | .name = "Volume", | |
114 | .minimum = 0x0, | |
115 | .maximum = 0x1f, | |
116 | .step = 0x1, | |
117 | .default_value = 0x1f, | |
118 | .flags = 0, | |
119 | },{ | |
120 | .id = V4L2_CID_AUDIO_MUTE, | |
121 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
122 | .name = "Mute", | |
123 | .minimum = 0, | |
124 | .maximum = 1, | |
125 | .step = 1, | |
126 | .default_value = 1, | |
127 | .flags = 0, | |
128 | } | |
129 | }; | |
130 | ||
3acf2809 | 131 | static struct usb_driver em28xx_usb_driver; |
a6c2ba28 | 132 | |
1e4baed3 | 133 | static DEFINE_MUTEX(em28xx_sysfs_lock); |
3acf2809 | 134 | static DECLARE_RWSEM(em28xx_disconnect); |
a6c2ba28 | 135 | |
136 | /********************* v4l2 interface ******************************************/ | |
137 | ||
a6c2ba28 | 138 | /* |
3acf2809 | 139 | * em28xx_config() |
a6c2ba28 | 140 | * inits registers with sane defaults |
141 | */ | |
3acf2809 | 142 | static int em28xx_config(struct em28xx *dev) |
a6c2ba28 | 143 | { |
144 | ||
145 | /* Sets I2C speed to 100 KHz */ | |
3acf2809 | 146 | em28xx_write_regs_req(dev, 0x00, 0x06, "\x40", 1); |
a6c2ba28 | 147 | |
148 | /* enable vbi capturing */ | |
e5589bef | 149 | |
9475fb1c MR |
150 | /* em28xx_write_regs_req(dev,0x00,0x0e,"\xC0",1); audio register */ |
151 | /* em28xx_write_regs_req(dev,0x00,0x0f,"\x80",1); clk register */ | |
e5589bef MCC |
152 | em28xx_write_regs_req(dev,0x00,0x11,"\x51",1); |
153 | ||
3acf2809 | 154 | em28xx_audio_usb_mute(dev, 1); |
a6c2ba28 | 155 | dev->mute = 1; /* maybe not the right place... */ |
156 | dev->volume = 0x1f; | |
3acf2809 MCC |
157 | em28xx_audio_analog_set(dev); |
158 | em28xx_audio_analog_setup(dev); | |
159 | em28xx_outfmt_set_yuv422(dev); | |
160 | em28xx_colorlevels_set_default(dev); | |
161 | em28xx_compression_disable(dev); | |
a6c2ba28 | 162 | |
163 | return 0; | |
164 | } | |
165 | ||
166 | /* | |
3acf2809 | 167 | * em28xx_config_i2c() |
a6c2ba28 | 168 | * configure i2c attached devices |
169 | */ | |
943a4902 | 170 | static void em28xx_config_i2c(struct em28xx *dev) |
a6c2ba28 | 171 | { |
172 | struct v4l2_frequency f; | |
c7c0b34c HV |
173 | struct v4l2_routing route; |
174 | ||
175 | route.input = INPUT(dev->ctl_input)->vmux; | |
176 | route.output = 0; | |
663d1ba2 | 177 | em28xx_i2c_call_clients(dev, VIDIOC_INT_RESET, NULL); |
c7c0b34c | 178 | em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route); |
f5762e44 | 179 | em28xx_i2c_call_clients(dev, VIDIOC_STREAMON, NULL); |
a6c2ba28 | 180 | |
181 | /* configure tuner */ | |
182 | f.tuner = 0; | |
183 | f.type = V4L2_TUNER_ANALOG_TV; | |
184 | f.frequency = 9076; /* FIXME:remove magic number */ | |
185 | dev->ctl_freq = f.frequency; | |
3acf2809 | 186 | em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, &f); |
a6c2ba28 | 187 | |
188 | /* configure tda9887 */ | |
189 | ||
a6c2ba28 | 190 | |
3acf2809 | 191 | /* em28xx_i2c_call_clients(dev,VIDIOC_S_STD,&dev->tvnorm->id); */ |
a6c2ba28 | 192 | } |
193 | ||
194 | /* | |
3acf2809 | 195 | * em28xx_empty_framequeues() |
a6c2ba28 | 196 | * prepare queues for incoming and outgoing frames |
197 | */ | |
3acf2809 | 198 | static void em28xx_empty_framequeues(struct em28xx *dev) |
a6c2ba28 | 199 | { |
200 | u32 i; | |
201 | ||
202 | INIT_LIST_HEAD(&dev->inqueue); | |
203 | INIT_LIST_HEAD(&dev->outqueue); | |
204 | ||
3acf2809 | 205 | for (i = 0; i < EM28XX_NUM_FRAMES; i++) { |
a6c2ba28 | 206 | dev->frame[i].state = F_UNUSED; |
207 | dev->frame[i].buf.bytesused = 0; | |
208 | } | |
209 | } | |
210 | ||
eac94356 MCC |
211 | static void video_mux(struct em28xx *dev, int index) |
212 | { | |
c7c0b34c HV |
213 | int ainput; |
214 | struct v4l2_routing route; | |
eac94356 | 215 | |
c7c0b34c HV |
216 | route.input = INPUT(index)->vmux; |
217 | route.output = 0; | |
eac94356 MCC |
218 | dev->ctl_input = index; |
219 | dev->ctl_ainput = INPUT(index)->amux; | |
220 | ||
c7c0b34c | 221 | em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route); |
eac94356 | 222 | |
c7c0b34c | 223 | em28xx_videodbg("Setting input index=%d, vmux=%d, amux=%d\n",index,route.input,dev->ctl_ainput); |
eac94356 MCC |
224 | |
225 | if (dev->has_msp34xx) { | |
9bb13a6d MCC |
226 | if (dev->i2s_speed) |
227 | em28xx_i2c_call_clients(dev, VIDIOC_INT_I2S_CLOCK_FREQ, &dev->i2s_speed); | |
2474ed44 | 228 | route.input = dev->ctl_ainput; |
07151724 | 229 | route.output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1); |
2474ed44 HV |
230 | /* Note: this is msp3400 specific */ |
231 | em28xx_i2c_call_clients(dev, VIDIOC_INT_S_AUDIO_ROUTING, &route); | |
eac94356 MCC |
232 | ainput = EM28XX_AUDIO_SRC_TUNER; |
233 | em28xx_audio_source(dev, ainput); | |
234 | } else { | |
235 | switch (dev->ctl_ainput) { | |
9475fb1c MR |
236 | case 0: |
237 | ainput = EM28XX_AUDIO_SRC_TUNER; | |
238 | break; | |
239 | default: | |
240 | ainput = EM28XX_AUDIO_SRC_LINE; | |
eac94356 MCC |
241 | } |
242 | em28xx_audio_source(dev, ainput); | |
243 | } | |
244 | } | |
245 | ||
a6c2ba28 | 246 | /* |
3acf2809 | 247 | * em28xx_v4l2_open() |
a6c2ba28 | 248 | * inits the device and starts isoc transfer |
249 | */ | |
3acf2809 | 250 | static int em28xx_v4l2_open(struct inode *inode, struct file *filp) |
a6c2ba28 | 251 | { |
a6c2ba28 | 252 | int minor = iminor(inode); |
a6c2ba28 | 253 | int errCode = 0; |
3acf2809 | 254 | struct em28xx *h,*dev = NULL; |
9c75541f MR |
255 | struct list_head *list; |
256 | ||
3acf2809 MCC |
257 | list_for_each(list,&em28xx_devlist) { |
258 | h = list_entry(list, struct em28xx, devlist); | |
9c75541f MR |
259 | if (h->vdev->minor == minor) { |
260 | dev = h; | |
e5589bef MCC |
261 | dev->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
262 | } | |
263 | if (h->vbi_dev->minor == minor) { | |
264 | dev = h; | |
265 | dev->type = V4L2_BUF_TYPE_VBI_CAPTURE; | |
9c75541f MR |
266 | } |
267 | } | |
e5589bef MCC |
268 | if (NULL == dev) |
269 | return -ENODEV; | |
9c75541f MR |
270 | |
271 | filp->private_data=dev; | |
272 | ||
e5589bef MCC |
273 | em28xx_videodbg("open minor=%d type=%s users=%d\n", |
274 | minor,v4l2_type_names[dev->type],dev->users); | |
a6c2ba28 | 275 | |
3acf2809 | 276 | if (!down_read_trylock(&em28xx_disconnect)) |
a6c2ba28 | 277 | return -ERESTARTSYS; |
278 | ||
279 | if (dev->users) { | |
3acf2809 MCC |
280 | em28xx_warn("this driver can be opened only once\n"); |
281 | up_read(&em28xx_disconnect); | |
a6c2ba28 | 282 | return -EBUSY; |
283 | } | |
284 | ||
3593cab5 | 285 | mutex_init(&dev->fileop_lock); /* to 1 == available */ |
a6c2ba28 | 286 | spin_lock_init(&dev->queue_lock); |
287 | init_waitqueue_head(&dev->wait_frame); | |
288 | init_waitqueue_head(&dev->wait_stream); | |
289 | ||
3593cab5 | 290 | mutex_lock(&dev->lock); |
a6c2ba28 | 291 | |
e5589bef MCC |
292 | if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
293 | em28xx_set_alternate(dev); | |
a6c2ba28 | 294 | |
e5589bef MCC |
295 | dev->width = norm_maxw(dev); |
296 | dev->height = norm_maxh(dev); | |
297 | dev->frame_size = dev->width * dev->height * 2; | |
298 | dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */ | |
299 | dev->bytesperline = dev->width * 2; | |
300 | dev->hscale = 0; | |
301 | dev->vscale = 0; | |
a6c2ba28 | 302 | |
e5589bef MCC |
303 | em28xx_capture_start(dev, 1); |
304 | em28xx_resolution_set(dev); | |
a6c2ba28 | 305 | |
e5d4a56d MR |
306 | /* device needs to be initialized before isoc transfer */ |
307 | video_mux(dev, 0); | |
308 | ||
e5589bef MCC |
309 | /* start the transfer */ |
310 | errCode = em28xx_init_isoc(dev); | |
311 | if (errCode) | |
312 | goto err; | |
313 | ||
e5589bef | 314 | } |
a6c2ba28 | 315 | |
316 | dev->users++; | |
317 | filp->private_data = dev; | |
318 | dev->io = IO_NONE; | |
319 | dev->stream = STREAM_OFF; | |
320 | dev->num_frames = 0; | |
321 | ||
322 | /* prepare queues */ | |
3acf2809 | 323 | em28xx_empty_framequeues(dev); |
a6c2ba28 | 324 | |
325 | dev->state |= DEV_INITIALIZED; | |
326 | ||
3593cab5 IM |
327 | err: |
328 | mutex_unlock(&dev->lock); | |
3acf2809 | 329 | up_read(&em28xx_disconnect); |
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 | { |
1e4baed3 | 340 | mutex_lock(&em28xx_sysfs_lock); |
a6c2ba28 | 341 | |
e5589bef MCC |
342 | /*FIXME: I2C IR should be disconnected */ |
343 | ||
344 | em28xx_info("V4L2 devices /dev/video%d and /dev/vbi%d deregistered\n", | |
345 | dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN, | |
346 | dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN); | |
9c75541f | 347 | list_del(&dev->devlist); |
a6c2ba28 | 348 | video_unregister_device(dev->vdev); |
e5589bef | 349 | video_unregister_device(dev->vbi_dev); |
3acf2809 | 350 | em28xx_i2c_unregister(dev); |
a6c2ba28 | 351 | usb_put_dev(dev->udev); |
1e4baed3 | 352 | mutex_unlock(&em28xx_sysfs_lock); |
e5589bef MCC |
353 | |
354 | ||
355 | /* Mark device as unused */ | |
356 | em28xx_devused&=~(1<<dev->devno); | |
a6c2ba28 | 357 | } |
358 | ||
359 | /* | |
3acf2809 | 360 | * em28xx_v4l2_close() |
a6c2ba28 | 361 | * stops streaming and deallocates all resources allocated by the v4l2 calls and ioctls |
362 | */ | |
3acf2809 | 363 | static int em28xx_v4l2_close(struct inode *inode, struct file *filp) |
a6c2ba28 | 364 | { |
a6c2ba28 | 365 | int errCode; |
3acf2809 | 366 | struct em28xx *dev=filp->private_data; |
a6c2ba28 | 367 | |
eac94356 | 368 | em28xx_videodbg("users=%d\n", dev->users); |
a6c2ba28 | 369 | |
3593cab5 | 370 | mutex_lock(&dev->lock); |
a6c2ba28 | 371 | |
3acf2809 | 372 | em28xx_uninit_isoc(dev); |
a6c2ba28 | 373 | |
3acf2809 | 374 | em28xx_release_buffers(dev); |
a6c2ba28 | 375 | |
376 | /* the device is already disconnect, free the remaining resources */ | |
377 | if (dev->state & DEV_DISCONNECTED) { | |
3acf2809 | 378 | em28xx_release_resources(dev); |
3593cab5 | 379 | mutex_unlock(&dev->lock); |
a6c2ba28 | 380 | kfree(dev); |
381 | return 0; | |
382 | } | |
383 | ||
384 | /* set alternate 0 */ | |
385 | dev->alt = 0; | |
eac94356 | 386 | em28xx_videodbg("setting alternate 0\n"); |
a6c2ba28 | 387 | errCode = usb_set_interface(dev->udev, 0, 0); |
388 | if (errCode < 0) { | |
3acf2809 | 389 | em28xx_errdev ("cannot change alternate number to 0 (error=%i)\n", |
a6c2ba28 | 390 | errCode); |
391 | } | |
392 | ||
393 | dev->users--; | |
394 | wake_up_interruptible_nr(&dev->open, 1); | |
3593cab5 | 395 | mutex_unlock(&dev->lock); |
a6c2ba28 | 396 | return 0; |
397 | } | |
398 | ||
399 | /* | |
3acf2809 | 400 | * em28xx_v4l2_read() |
a6c2ba28 | 401 | * will allocate buffers when called for the first time |
402 | */ | |
403 | static ssize_t | |
3acf2809 | 404 | em28xx_v4l2_read(struct file *filp, char __user * buf, size_t count, |
a6c2ba28 | 405 | loff_t * f_pos) |
406 | { | |
3acf2809 | 407 | struct em28xx_frame_t *f, *i; |
a6c2ba28 | 408 | unsigned long lock_flags; |
409 | int ret = 0; | |
3acf2809 | 410 | struct em28xx *dev = filp->private_data; |
a6c2ba28 | 411 | |
e5589bef MCC |
412 | if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
413 | em28xx_videodbg("V4l2_Buf_type_videocapture is set\n"); | |
414 | } | |
415 | if (dev->type == V4L2_BUF_TYPE_VBI_CAPTURE) { | |
416 | em28xx_videodbg("V4L2_BUF_TYPE_VBI_CAPTURE is set\n"); | |
417 | em28xx_videodbg("not supported yet! ...\n"); | |
418 | if (copy_to_user(buf, "", 1)) { | |
3593cab5 | 419 | mutex_unlock(&dev->fileop_lock); |
e5589bef MCC |
420 | return -EFAULT; |
421 | } | |
422 | return (1); | |
423 | } | |
424 | if (dev->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) { | |
425 | em28xx_videodbg("V4L2_BUF_TYPE_SLICED_VBI_CAPTURE is set\n"); | |
426 | em28xx_videodbg("not supported yet! ...\n"); | |
427 | if (copy_to_user(buf, "", 1)) { | |
3593cab5 | 428 | mutex_unlock(&dev->fileop_lock); |
e5589bef MCC |
429 | return -EFAULT; |
430 | } | |
431 | return (1); | |
432 | } | |
433 | ||
3593cab5 | 434 | if (mutex_lock_interruptible(&dev->fileop_lock)) |
a6c2ba28 | 435 | return -ERESTARTSYS; |
436 | ||
437 | if (dev->state & DEV_DISCONNECTED) { | |
eac94356 | 438 | em28xx_videodbg("device not present\n"); |
3593cab5 | 439 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 440 | return -ENODEV; |
441 | } | |
442 | ||
443 | if (dev->state & DEV_MISCONFIGURED) { | |
eac94356 | 444 | em28xx_videodbg("device misconfigured; close and open it again\n"); |
3593cab5 | 445 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 446 | return -EIO; |
447 | } | |
448 | ||
449 | if (dev->io == IO_MMAP) { | |
3acf2809 | 450 | em28xx_videodbg ("IO method is set to mmap; close and open" |
eac94356 | 451 | " the device again to choose the read method\n"); |
3593cab5 | 452 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 453 | return -EINVAL; |
454 | } | |
455 | ||
456 | if (dev->io == IO_NONE) { | |
3acf2809 MCC |
457 | if (!em28xx_request_buffers(dev, EM28XX_NUM_READ_FRAMES)) { |
458 | em28xx_errdev("read failed, not enough memory\n"); | |
3593cab5 | 459 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 460 | return -ENOMEM; |
461 | } | |
462 | dev->io = IO_READ; | |
463 | dev->stream = STREAM_ON; | |
3acf2809 | 464 | em28xx_queue_unusedframes(dev); |
a6c2ba28 | 465 | } |
466 | ||
467 | if (!count) { | |
3593cab5 | 468 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 469 | return 0; |
470 | } | |
471 | ||
472 | if (list_empty(&dev->outqueue)) { | |
473 | if (filp->f_flags & O_NONBLOCK) { | |
3593cab5 | 474 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 475 | return -EAGAIN; |
476 | } | |
477 | ret = wait_event_interruptible | |
478 | (dev->wait_frame, | |
479 | (!list_empty(&dev->outqueue)) || | |
480 | (dev->state & DEV_DISCONNECTED)); | |
481 | if (ret) { | |
3593cab5 | 482 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 483 | return ret; |
484 | } | |
485 | if (dev->state & DEV_DISCONNECTED) { | |
3593cab5 | 486 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 487 | return -ENODEV; |
488 | } | |
489 | } | |
490 | ||
3acf2809 | 491 | f = list_entry(dev->outqueue.prev, struct em28xx_frame_t, frame); |
a6c2ba28 | 492 | |
493 | spin_lock_irqsave(&dev->queue_lock, lock_flags); | |
494 | list_for_each_entry(i, &dev->outqueue, frame) | |
495 | i->state = F_UNUSED; | |
496 | INIT_LIST_HEAD(&dev->outqueue); | |
497 | spin_unlock_irqrestore(&dev->queue_lock, lock_flags); | |
498 | ||
3acf2809 | 499 | em28xx_queue_unusedframes(dev); |
a6c2ba28 | 500 | |
501 | if (count > f->buf.length) | |
502 | count = f->buf.length; | |
503 | ||
504 | if (copy_to_user(buf, f->bufmem, count)) { | |
3593cab5 | 505 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 506 | return -EFAULT; |
507 | } | |
508 | *f_pos += count; | |
509 | ||
3593cab5 | 510 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 511 | |
512 | return count; | |
513 | } | |
514 | ||
515 | /* | |
3acf2809 | 516 | * em28xx_v4l2_poll() |
a6c2ba28 | 517 | * will allocate buffers when called for the first time |
518 | */ | |
3acf2809 | 519 | static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table * wait) |
a6c2ba28 | 520 | { |
a6c2ba28 | 521 | unsigned int mask = 0; |
3acf2809 | 522 | struct em28xx *dev = filp->private_data; |
a6c2ba28 | 523 | |
3593cab5 | 524 | if (mutex_lock_interruptible(&dev->fileop_lock)) |
a6c2ba28 | 525 | return POLLERR; |
526 | ||
527 | if (dev->state & DEV_DISCONNECTED) { | |
eac94356 | 528 | em28xx_videodbg("device not present\n"); |
a6c2ba28 | 529 | } else if (dev->state & DEV_MISCONFIGURED) { |
eac94356 | 530 | em28xx_videodbg("device is misconfigured; close and open it again\n"); |
a6c2ba28 | 531 | } else { |
532 | if (dev->io == IO_NONE) { | |
3acf2809 MCC |
533 | if (!em28xx_request_buffers |
534 | (dev, EM28XX_NUM_READ_FRAMES)) { | |
535 | em28xx_warn | |
a6c2ba28 | 536 | ("poll() failed, not enough memory\n"); |
537 | } else { | |
538 | dev->io = IO_READ; | |
539 | dev->stream = STREAM_ON; | |
540 | } | |
541 | } | |
542 | ||
543 | if (dev->io == IO_READ) { | |
3acf2809 | 544 | em28xx_queue_unusedframes(dev); |
a6c2ba28 | 545 | poll_wait(filp, &dev->wait_frame, wait); |
546 | ||
547 | if (!list_empty(&dev->outqueue)) | |
548 | mask |= POLLIN | POLLRDNORM; | |
549 | ||
3593cab5 | 550 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 551 | |
552 | return mask; | |
553 | } | |
554 | } | |
555 | ||
3593cab5 | 556 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 557 | return POLLERR; |
558 | } | |
559 | ||
560 | /* | |
3acf2809 | 561 | * em28xx_vm_open() |
a6c2ba28 | 562 | */ |
3acf2809 | 563 | static void em28xx_vm_open(struct vm_area_struct *vma) |
a6c2ba28 | 564 | { |
3acf2809 | 565 | struct em28xx_frame_t *f = vma->vm_private_data; |
a6c2ba28 | 566 | f->vma_use_count++; |
567 | } | |
568 | ||
569 | /* | |
3acf2809 | 570 | * em28xx_vm_close() |
a6c2ba28 | 571 | */ |
3acf2809 | 572 | static void em28xx_vm_close(struct vm_area_struct *vma) |
a6c2ba28 | 573 | { |
574 | /* NOTE: buffers are not freed here */ | |
3acf2809 | 575 | struct em28xx_frame_t *f = vma->vm_private_data; |
a6c2ba28 | 576 | f->vma_use_count--; |
577 | } | |
578 | ||
3acf2809 MCC |
579 | static struct vm_operations_struct em28xx_vm_ops = { |
580 | .open = em28xx_vm_open, | |
581 | .close = em28xx_vm_close, | |
a6c2ba28 | 582 | }; |
583 | ||
584 | /* | |
3acf2809 | 585 | * em28xx_v4l2_mmap() |
a6c2ba28 | 586 | */ |
3acf2809 | 587 | static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma) |
a6c2ba28 | 588 | { |
a6c2ba28 | 589 | unsigned long size = vma->vm_end - vma->vm_start, |
3639c861 SS |
590 | start = vma->vm_start; |
591 | void *pos; | |
a6c2ba28 | 592 | u32 i; |
9c75541f | 593 | |
3acf2809 | 594 | struct em28xx *dev = filp->private_data; |
9c75541f | 595 | |
3593cab5 | 596 | if (mutex_lock_interruptible(&dev->fileop_lock)) |
a6c2ba28 | 597 | return -ERESTARTSYS; |
598 | ||
599 | if (dev->state & DEV_DISCONNECTED) { | |
eac94356 | 600 | em28xx_videodbg("mmap: device not present\n"); |
3593cab5 | 601 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 602 | return -ENODEV; |
603 | } | |
604 | ||
605 | if (dev->state & DEV_MISCONFIGURED) { | |
3acf2809 | 606 | em28xx_videodbg ("mmap: Device is misconfigured; close and " |
eac94356 | 607 | "open it again\n"); |
3593cab5 | 608 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 609 | return -EIO; |
610 | } | |
611 | ||
612 | if (dev->io != IO_MMAP || !(vma->vm_flags & VM_WRITE) || | |
613 | size != PAGE_ALIGN(dev->frame[0].buf.length)) { | |
3593cab5 | 614 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 615 | return -EINVAL; |
616 | } | |
617 | ||
618 | for (i = 0; i < dev->num_frames; i++) { | |
619 | if ((dev->frame[i].buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff) | |
620 | break; | |
621 | } | |
622 | if (i == dev->num_frames) { | |
eac94356 | 623 | em28xx_videodbg("mmap: user supplied mapping address is out of range\n"); |
3593cab5 | 624 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 625 | return -EINVAL; |
626 | } | |
627 | ||
628 | /* VM_IO is eventually going to replace PageReserved altogether */ | |
629 | vma->vm_flags |= VM_IO; | |
630 | vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */ | |
631 | ||
3639c861 | 632 | pos = dev->frame[i].bufmem; |
a6c2ba28 | 633 | while (size > 0) { /* size is page-aligned */ |
3639c861 SS |
634 | if (vm_insert_page(vma, start, vmalloc_to_page(pos))) { |
635 | em28xx_videodbg("mmap: vm_insert_page failed\n"); | |
3593cab5 | 636 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 637 | return -EAGAIN; |
638 | } | |
639 | start += PAGE_SIZE; | |
640 | pos += PAGE_SIZE; | |
641 | size -= PAGE_SIZE; | |
642 | } | |
643 | ||
3acf2809 | 644 | vma->vm_ops = &em28xx_vm_ops; |
a6c2ba28 | 645 | vma->vm_private_data = &dev->frame[i]; |
646 | ||
3acf2809 | 647 | em28xx_vm_open(vma); |
3593cab5 | 648 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 649 | return 0; |
650 | } | |
651 | ||
652 | /* | |
3acf2809 | 653 | * em28xx_get_ctrl() |
a6c2ba28 | 654 | * return the current saturation, brightness or contrast, mute state |
655 | */ | |
3acf2809 | 656 | static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl) |
a6c2ba28 | 657 | { |
a6c2ba28 | 658 | switch (ctrl->id) { |
659 | case V4L2_CID_AUDIO_MUTE: | |
660 | ctrl->value = dev->mute; | |
661 | return 0; | |
662 | case V4L2_CID_AUDIO_VOLUME: | |
663 | ctrl->value = dev->volume; | |
664 | return 0; | |
c0477ad9 MCC |
665 | default: |
666 | return -EINVAL; | |
667 | } | |
668 | } | |
669 | ||
a6c2ba28 | 670 | /* |
3acf2809 | 671 | * em28xx_set_ctrl() |
a6c2ba28 | 672 | * mute or set new saturation, brightness or contrast |
673 | */ | |
3acf2809 | 674 | static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl) |
a6c2ba28 | 675 | { |
676 | switch (ctrl->id) { | |
677 | case V4L2_CID_AUDIO_MUTE: | |
678 | if (ctrl->value != dev->mute) { | |
679 | dev->mute = ctrl->value; | |
3acf2809 MCC |
680 | em28xx_audio_usb_mute(dev, ctrl->value); |
681 | return em28xx_audio_analog_set(dev); | |
a6c2ba28 | 682 | } |
683 | return 0; | |
684 | case V4L2_CID_AUDIO_VOLUME: | |
685 | dev->volume = ctrl->value; | |
3acf2809 | 686 | return em28xx_audio_analog_set(dev); |
c0477ad9 MCC |
687 | default: |
688 | return -EINVAL; | |
689 | } | |
690 | } | |
691 | ||
a6c2ba28 | 692 | /* |
3acf2809 | 693 | * em28xx_stream_interrupt() |
a6c2ba28 | 694 | * stops streaming |
695 | */ | |
3acf2809 | 696 | static int em28xx_stream_interrupt(struct em28xx *dev) |
a6c2ba28 | 697 | { |
698 | int ret = 0; | |
699 | ||
700 | /* stop reading from the device */ | |
701 | ||
702 | dev->stream = STREAM_INTERRUPT; | |
703 | ret = wait_event_timeout(dev->wait_stream, | |
704 | (dev->stream == STREAM_OFF) || | |
705 | (dev->state & DEV_DISCONNECTED), | |
3acf2809 | 706 | EM28XX_URB_TIMEOUT); |
a6c2ba28 | 707 | if (dev->state & DEV_DISCONNECTED) |
708 | return -ENODEV; | |
709 | else if (ret) { | |
710 | dev->state |= DEV_MISCONFIGURED; | |
3acf2809 | 711 | em28xx_videodbg("device is misconfigured; close and " |
e5589bef MCC |
712 | "open /dev/video%d again\n", |
713 | dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN); | |
a6c2ba28 | 714 | return ret; |
715 | } | |
716 | ||
717 | return 0; | |
718 | } | |
719 | ||
3acf2809 | 720 | static int em28xx_set_norm(struct em28xx *dev, int width, int height) |
a6c2ba28 | 721 | { |
722 | unsigned int hscale, vscale; | |
723 | unsigned int maxh, maxw; | |
724 | ||
725 | maxw = norm_maxw(dev); | |
726 | maxh = norm_maxh(dev); | |
727 | ||
728 | /* width must even because of the YUYV format */ | |
729 | /* height must be even because of interlacing */ | |
730 | height &= 0xfffe; | |
731 | width &= 0xfffe; | |
732 | ||
733 | if (height < 32) | |
734 | height = 32; | |
735 | if (height > maxh) | |
736 | height = maxh; | |
737 | if (width < 48) | |
738 | width = 48; | |
739 | if (width > maxw) | |
740 | width = maxw; | |
741 | ||
742 | if ((hscale = (((unsigned long)maxw) << 12) / width - 4096L) >= 0x4000) | |
743 | hscale = 0x3fff; | |
744 | width = (((unsigned long)maxw) << 12) / (hscale + 4096L); | |
745 | ||
746 | if ((vscale = (((unsigned long)maxh) << 12) / height - 4096L) >= 0x4000) | |
747 | vscale = 0x3fff; | |
748 | height = (((unsigned long)maxh) << 12) / (vscale + 4096L); | |
749 | ||
750 | /* set new image size */ | |
751 | dev->width = width; | |
752 | dev->height = height; | |
753 | dev->frame_size = dev->width * dev->height * 2; | |
754 | dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */ | |
755 | dev->bytesperline = dev->width * 2; | |
756 | dev->hscale = hscale; | |
757 | dev->vscale = vscale; | |
758 | ||
3acf2809 | 759 | em28xx_resolution_set(dev); |
a6c2ba28 | 760 | |
761 | return 0; | |
762 | } | |
763 | ||
e5589bef MCC |
764 | static int em28xx_get_fmt(struct em28xx *dev, struct v4l2_format *format) |
765 | { | |
766 | em28xx_videodbg("VIDIOC_G_FMT: type=%s\n", | |
767 | (format->type ==V4L2_BUF_TYPE_VIDEO_CAPTURE) ? | |
768 | "V4L2_BUF_TYPE_VIDEO_CAPTURE" : | |
769 | (format->type ==V4L2_BUF_TYPE_VBI_CAPTURE) ? | |
770 | "V4L2_BUF_TYPE_VBI_CAPTURE" : | |
771 | (format->type ==V4L2_CAP_SLICED_VBI_CAPTURE) ? | |
772 | "V4L2_BUF_TYPE_SLICED_VBI_CAPTURE " : | |
773 | "not supported"); | |
774 | ||
2d50f847 MCC |
775 | switch (format->type) { |
776 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
777 | { | |
e5589bef MCC |
778 | format->fmt.pix.width = dev->width; |
779 | format->fmt.pix.height = dev->height; | |
780 | format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; | |
781 | format->fmt.pix.bytesperline = dev->bytesperline; | |
782 | format->fmt.pix.sizeimage = dev->frame_size; | |
783 | format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; | |
784 | format->fmt.pix.field = dev->interlaced ? V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */ | |
785 | ||
786 | em28xx_videodbg("VIDIOC_G_FMT: %dx%d\n", dev->width, | |
787 | dev->height); | |
2d50f847 | 788 | break; |
e5589bef MCC |
789 | } |
790 | ||
2d50f847 MCC |
791 | case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: |
792 | { | |
793 | format->fmt.sliced.service_set=0; | |
794 | ||
795 | em28xx_i2c_call_clients(dev,VIDIOC_G_FMT,format); | |
796 | ||
797 | if (format->fmt.sliced.service_set==0) | |
798 | return -EINVAL; | |
799 | ||
800 | break; | |
801 | } | |
802 | ||
803 | default: | |
804 | return -EINVAL; | |
805 | } | |
806 | return (0); | |
e5589bef MCC |
807 | } |
808 | ||
2d50f847 MCC |
809 | static int em28xx_set_fmt(struct em28xx *dev, unsigned int cmd, struct v4l2_format *format) |
810 | { | |
811 | u32 i; | |
812 | int ret = 0; | |
813 | int width = format->fmt.pix.width; | |
814 | int height = format->fmt.pix.height; | |
815 | unsigned int hscale, vscale; | |
816 | unsigned int maxh, maxw; | |
817 | ||
818 | maxw = norm_maxw(dev); | |
819 | maxh = norm_maxh(dev); | |
820 | ||
821 | em28xx_videodbg("%s: type=%s\n", | |
822 | cmd == VIDIOC_TRY_FMT ? | |
823 | "VIDIOC_TRY_FMT" : "VIDIOC_S_FMT", | |
824 | format->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ? | |
825 | "V4L2_BUF_TYPE_VIDEO_CAPTURE" : | |
826 | format->type == V4L2_BUF_TYPE_VBI_CAPTURE ? | |
827 | "V4L2_BUF_TYPE_VBI_CAPTURE " : | |
828 | "not supported"); | |
829 | ||
830 | if (format->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) { | |
831 | em28xx_i2c_call_clients(dev,VIDIOC_G_FMT,format); | |
832 | ||
833 | if (format->fmt.sliced.service_set==0) | |
834 | return -EINVAL; | |
835 | ||
836 | return 0; | |
837 | } | |
838 | ||
839 | ||
840 | if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
841 | return -EINVAL; | |
842 | ||
843 | em28xx_videodbg("%s: requested %dx%d\n", | |
844 | cmd == VIDIOC_TRY_FMT ? | |
845 | "VIDIOC_TRY_FMT" : "VIDIOC_S_FMT", | |
846 | format->fmt.pix.width, format->fmt.pix.height); | |
847 | ||
848 | /* FIXME: Move some code away from here */ | |
849 | /* width must even because of the YUYV format */ | |
850 | /* height must be even because of interlacing */ | |
851 | height &= 0xfffe; | |
852 | width &= 0xfffe; | |
853 | ||
854 | if (height < 32) | |
855 | height = 32; | |
856 | if (height > maxh) | |
857 | height = maxh; | |
858 | if (width < 48) | |
859 | width = 48; | |
860 | if (width > maxw) | |
861 | width = maxw; | |
862 | ||
863 | if(dev->is_em2800){ | |
864 | /* the em2800 can only scale down to 50% */ | |
865 | if(height % (maxh / 2)) | |
866 | height=maxh; | |
867 | if(width % (maxw / 2)) | |
868 | width=maxw; | |
869 | /* according to empiatech support */ | |
870 | /* the MaxPacketSize is to small to support */ | |
871 | /* framesizes larger than 640x480 @ 30 fps */ | |
872 | /* or 640x576 @ 25 fps. As this would cut */ | |
873 | /* of a part of the image we prefer */ | |
874 | /* 360x576 or 360x480 for now */ | |
875 | if(width == maxw && height == maxh) | |
876 | width /= 2; | |
877 | } | |
878 | ||
9aeb4b05 | 879 | if ((hscale = (((unsigned long)maxw) << 12) / width - 4096L) >= 0x4000) |
2d50f847 | 880 | hscale = 0x3fff; |
2d50f847 | 881 | |
9aeb4b05 MCC |
882 | width = (((unsigned long)maxw) << 12) / (hscale + 4096L); |
883 | ||
884 | if ((vscale = (((unsigned long)maxh) << 12) / height - 4096L) >= 0x4000) | |
2d50f847 | 885 | vscale = 0x3fff; |
9aeb4b05 MCC |
886 | |
887 | height = (((unsigned long)maxh) << 12) / (vscale + 4096L); | |
2d50f847 MCC |
888 | |
889 | format->fmt.pix.width = width; | |
890 | format->fmt.pix.height = height; | |
891 | format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; | |
892 | format->fmt.pix.bytesperline = width * 2; | |
893 | format->fmt.pix.sizeimage = width * 2 * height; | |
894 | format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; | |
895 | format->fmt.pix.field = V4L2_FIELD_INTERLACED; | |
896 | ||
897 | em28xx_videodbg("%s: returned %dx%d (%d, %d)\n", | |
9aeb4b05 MCC |
898 | cmd == VIDIOC_TRY_FMT ? |
899 | "VIDIOC_TRY_FMT" :"VIDIOC_S_FMT", | |
900 | format->fmt.pix.width, format->fmt.pix.height, hscale, vscale); | |
2d50f847 MCC |
901 | |
902 | if (cmd == VIDIOC_TRY_FMT) | |
903 | return 0; | |
904 | ||
905 | for (i = 0; i < dev->num_frames; i++) | |
906 | if (dev->frame[i].vma_use_count) { | |
907 | em28xx_videodbg("VIDIOC_S_FMT failed. " | |
908 | "Unmap the buffers first.\n"); | |
909 | return -EINVAL; | |
910 | } | |
911 | ||
912 | /* stop io in case it is already in progress */ | |
913 | if (dev->stream == STREAM_ON) { | |
914 | em28xx_videodbg("VIDIOC_SET_FMT: interupting stream\n"); | |
915 | if ((ret = em28xx_stream_interrupt(dev))) | |
916 | return ret; | |
917 | } | |
918 | ||
919 | em28xx_release_buffers(dev); | |
920 | dev->io = IO_NONE; | |
921 | ||
922 | /* set new image size */ | |
923 | dev->width = width; | |
924 | dev->height = height; | |
925 | dev->frame_size = dev->width * dev->height * 2; | |
9aeb4b05 | 926 | dev->field_size = dev->frame_size >> 1; |
2d50f847 MCC |
927 | dev->bytesperline = dev->width * 2; |
928 | dev->hscale = hscale; | |
929 | dev->vscale = vscale; | |
930 | em28xx_uninit_isoc(dev); | |
931 | em28xx_set_alternate(dev); | |
932 | em28xx_capture_start(dev, 1); | |
933 | em28xx_resolution_set(dev); | |
934 | em28xx_init_isoc(dev); | |
935 | ||
936 | return 0; | |
937 | } | |
e5589bef | 938 | |
a6c2ba28 | 939 | /* |
3acf2809 | 940 | * em28xx_v4l2_do_ioctl() |
a6c2ba28 | 941 | * This function is _not_ called directly, but from |
3acf2809 | 942 | * em28xx_v4l2_ioctl. Userspace |
a6c2ba28 | 943 | * copying is done already, arg is a kernel pointer. |
944 | */ | |
3acf2809 MCC |
945 | static int em28xx_do_ioctl(struct inode *inode, struct file *filp, |
946 | struct em28xx *dev, unsigned int cmd, void *arg, | |
a6c2ba28 | 947 | v4l2_kioctl driver_ioctl) |
948 | { | |
949 | int ret; | |
950 | ||
951 | switch (cmd) { | |
952 | /* ---------- tv norms ---------- */ | |
953 | case VIDIOC_ENUMSTD: | |
9aeb4b05 MCC |
954 | { |
955 | struct v4l2_standard *e = arg; | |
956 | unsigned int i; | |
a6c2ba28 | 957 | |
9aeb4b05 MCC |
958 | i = e->index; |
959 | if (i >= TVNORMS) | |
960 | return -EINVAL; | |
961 | ret = v4l2_video_std_construct(e, tvnorms[e->index].id, | |
962 | tvnorms[e->index].name); | |
963 | e->index = i; | |
964 | if (ret < 0) | |
965 | return ret; | |
966 | return 0; | |
967 | } | |
a6c2ba28 | 968 | case VIDIOC_G_STD: |
9aeb4b05 MCC |
969 | { |
970 | v4l2_std_id *id = arg; | |
a6c2ba28 | 971 | |
9aeb4b05 MCC |
972 | *id = dev->tvnorm->id; |
973 | return 0; | |
974 | } | |
a6c2ba28 | 975 | case VIDIOC_S_STD: |
9aeb4b05 MCC |
976 | { |
977 | v4l2_std_id *id = arg; | |
978 | unsigned int i; | |
a6c2ba28 | 979 | |
9aeb4b05 MCC |
980 | for (i = 0; i < TVNORMS; i++) |
981 | if (*id == tvnorms[i].id) | |
982 | break; | |
983 | if (i == TVNORMS) | |
a6c2ba28 | 984 | for (i = 0; i < TVNORMS; i++) |
9aeb4b05 | 985 | if (*id & tvnorms[i].id) |
a6c2ba28 | 986 | break; |
9aeb4b05 MCC |
987 | if (i == TVNORMS) |
988 | return -EINVAL; | |
a6c2ba28 | 989 | |
3593cab5 | 990 | mutex_lock(&dev->lock); |
9aeb4b05 | 991 | dev->tvnorm = &tvnorms[i]; |
a6c2ba28 | 992 | |
9aeb4b05 | 993 | em28xx_set_norm(dev, dev->width, dev->height); |
a6c2ba28 | 994 | |
9aeb4b05 MCC |
995 | em28xx_i2c_call_clients(dev, VIDIOC_S_STD, |
996 | &dev->tvnorm->id); | |
a6c2ba28 | 997 | |
3593cab5 | 998 | mutex_unlock(&dev->lock); |
a6c2ba28 | 999 | |
9aeb4b05 MCC |
1000 | return 0; |
1001 | } | |
a6c2ba28 | 1002 | |
9aeb4b05 | 1003 | /* ------ input switching ---------- */ |
a6c2ba28 | 1004 | case VIDIOC_ENUMINPUT: |
9aeb4b05 MCC |
1005 | { |
1006 | struct v4l2_input *i = arg; | |
1007 | unsigned int n; | |
1008 | static const char *iname[] = { | |
1009 | [EM28XX_VMUX_COMPOSITE1] = "Composite1", | |
1010 | [EM28XX_VMUX_COMPOSITE2] = "Composite2", | |
1011 | [EM28XX_VMUX_COMPOSITE3] = "Composite3", | |
1012 | [EM28XX_VMUX_COMPOSITE4] = "Composite4", | |
1013 | [EM28XX_VMUX_SVIDEO] = "S-Video", | |
1014 | [EM28XX_VMUX_TELEVISION] = "Television", | |
1015 | [EM28XX_VMUX_CABLE] = "Cable TV", | |
1016 | [EM28XX_VMUX_DVB] = "DVB", | |
1017 | [EM28XX_VMUX_DEBUG] = "for debug only", | |
1018 | }; | |
1019 | ||
1020 | n = i->index; | |
1021 | if (n >= MAX_EM28XX_INPUT) | |
1022 | return -EINVAL; | |
1023 | if (0 == INPUT(n)->type) | |
1024 | return -EINVAL; | |
1025 | memset(i, 0, sizeof(*i)); | |
1026 | i->index = n; | |
1027 | i->type = V4L2_INPUT_TYPE_CAMERA; | |
1028 | strcpy(i->name, iname[INPUT(n)->type]); | |
1029 | if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) || | |
1030 | (EM28XX_VMUX_CABLE == INPUT(n)->type)) | |
1031 | i->type = V4L2_INPUT_TYPE_TUNER; | |
1032 | for (n = 0; n < ARRAY_SIZE(tvnorms); n++) | |
1033 | i->std |= tvnorms[n].id; | |
1034 | return 0; | |
1035 | } | |
a6c2ba28 | 1036 | case VIDIOC_G_INPUT: |
9aeb4b05 MCC |
1037 | { |
1038 | int *i = arg; | |
1039 | *i = dev->ctl_input; | |
a6c2ba28 | 1040 | |
9aeb4b05 MCC |
1041 | return 0; |
1042 | } | |
a6c2ba28 | 1043 | case VIDIOC_S_INPUT: |
9aeb4b05 MCC |
1044 | { |
1045 | int *index = arg; | |
a6c2ba28 | 1046 | |
9aeb4b05 MCC |
1047 | if (*index >= MAX_EM28XX_INPUT) |
1048 | return -EINVAL; | |
1049 | if (0 == INPUT(*index)->type) | |
1050 | return -EINVAL; | |
a6c2ba28 | 1051 | |
3593cab5 | 1052 | mutex_lock(&dev->lock); |
9aeb4b05 | 1053 | video_mux(dev, *index); |
3593cab5 | 1054 | mutex_unlock(&dev->lock); |
a6c2ba28 | 1055 | |
9aeb4b05 MCC |
1056 | return 0; |
1057 | } | |
a6c2ba28 | 1058 | case VIDIOC_G_AUDIO: |
9aeb4b05 MCC |
1059 | { |
1060 | struct v4l2_audio *a = arg; | |
1061 | unsigned int index = a->index; | |
a6c2ba28 | 1062 | |
9aeb4b05 MCC |
1063 | if (a->index > 1) |
1064 | return -EINVAL; | |
1065 | memset(a, 0, sizeof(*a)); | |
1066 | index = dev->ctl_ainput; | |
a6c2ba28 | 1067 | |
9aeb4b05 MCC |
1068 | if (index == 0) { |
1069 | strcpy(a->name, "Television"); | |
1070 | } else { | |
1071 | strcpy(a->name, "Line In"); | |
a6c2ba28 | 1072 | } |
9aeb4b05 MCC |
1073 | a->capability = V4L2_AUDCAP_STEREO; |
1074 | a->index = index; | |
1075 | return 0; | |
1076 | } | |
a6c2ba28 | 1077 | case VIDIOC_S_AUDIO: |
9aeb4b05 MCC |
1078 | { |
1079 | struct v4l2_audio *a = arg; | |
a6c2ba28 | 1080 | |
9aeb4b05 MCC |
1081 | if (a->index != dev->ctl_ainput) |
1082 | return -EINVAL; | |
1083 | ||
1084 | return 0; | |
1085 | } | |
a6c2ba28 | 1086 | |
9aeb4b05 | 1087 | /* --- controls ---------------------------------------------- */ |
a6c2ba28 | 1088 | case VIDIOC_QUERYCTRL: |
9aeb4b05 MCC |
1089 | { |
1090 | struct v4l2_queryctrl *qc = arg; | |
1091 | int i, id=qc->id; | |
1092 | ||
1093 | memset(qc,0,sizeof(*qc)); | |
1094 | qc->id=id; | |
1095 | ||
1096 | if (!dev->has_msp34xx) { | |
1097 | for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) { | |
1098 | if (qc->id && qc->id == em28xx_qctrl[i].id) { | |
1099 | memcpy(qc, &(em28xx_qctrl[i]), | |
1100 | sizeof(*qc)); | |
a6c2ba28 | 1101 | return 0; |
1102 | } | |
c0477ad9 | 1103 | } |
9aeb4b05 | 1104 | } |
f5762e44 MCC |
1105 | em28xx_i2c_call_clients(dev,cmd,qc); |
1106 | if (qc->type) | |
1107 | return 0; | |
1108 | else | |
1109 | return -EINVAL; | |
9aeb4b05 | 1110 | } |
a6c2ba28 | 1111 | case VIDIOC_G_CTRL: |
9aeb4b05 MCC |
1112 | { |
1113 | struct v4l2_control *ctrl = arg; | |
1114 | int retval=-EINVAL; | |
a6c2ba28 | 1115 | |
9aeb4b05 MCC |
1116 | if (!dev->has_msp34xx) |
1117 | retval=em28xx_get_ctrl(dev, ctrl); | |
1118 | if (retval==-EINVAL) { | |
f5762e44 MCC |
1119 | em28xx_i2c_call_clients(dev,cmd,arg); |
1120 | return 0; | |
9aeb4b05 MCC |
1121 | } else return retval; |
1122 | } | |
a6c2ba28 | 1123 | case VIDIOC_S_CTRL: |
9aeb4b05 MCC |
1124 | { |
1125 | struct v4l2_control *ctrl = arg; | |
1126 | u8 i; | |
1127 | ||
1128 | if (!dev->has_msp34xx){ | |
1129 | for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) { | |
1130 | if (ctrl->id == em28xx_qctrl[i].id) { | |
1131 | if (ctrl->value < | |
1132 | em28xx_qctrl[i].minimum | |
1133 | || ctrl->value > | |
1134 | em28xx_qctrl[i].maximum) | |
1135 | return -ERANGE; | |
1136 | return em28xx_set_ctrl(dev, ctrl); | |
c0477ad9 MCC |
1137 | } |
1138 | } | |
9aeb4b05 | 1139 | } |
a6c2ba28 | 1140 | |
f5762e44 MCC |
1141 | em28xx_i2c_call_clients(dev,cmd,arg); |
1142 | return 0; | |
9aeb4b05 MCC |
1143 | } |
1144 | /* --- tuner ioctls ------------------------------------------ */ | |
a6c2ba28 | 1145 | case VIDIOC_G_TUNER: |
9aeb4b05 MCC |
1146 | { |
1147 | struct v4l2_tuner *t = arg; | |
a6c2ba28 | 1148 | |
9aeb4b05 MCC |
1149 | if (0 != t->index) |
1150 | return -EINVAL; | |
a6c2ba28 | 1151 | |
9aeb4b05 MCC |
1152 | memset(t, 0, sizeof(*t)); |
1153 | strcpy(t->name, "Tuner"); | |
3593cab5 | 1154 | mutex_lock(&dev->lock); |
ab4cecf9 HV |
1155 | /* let clients fill in the remainder of this struct */ |
1156 | em28xx_i2c_call_clients(dev, cmd, t); | |
3593cab5 | 1157 | mutex_unlock(&dev->lock); |
9aeb4b05 MCC |
1158 | em28xx_videodbg("VIDIO_G_TUNER: signal=%x, afc=%x\n", t->signal, |
1159 | t->afc); | |
1160 | return 0; | |
1161 | } | |
a6c2ba28 | 1162 | case VIDIOC_S_TUNER: |
9aeb4b05 MCC |
1163 | { |
1164 | struct v4l2_tuner *t = arg; | |
a6c2ba28 | 1165 | |
9aeb4b05 MCC |
1166 | if (0 != t->index) |
1167 | return -EINVAL; | |
3593cab5 | 1168 | mutex_lock(&dev->lock); |
ab4cecf9 HV |
1169 | /* let clients handle this */ |
1170 | em28xx_i2c_call_clients(dev, cmd, t); | |
3593cab5 | 1171 | mutex_unlock(&dev->lock); |
9aeb4b05 MCC |
1172 | return 0; |
1173 | } | |
a6c2ba28 | 1174 | case VIDIOC_G_FREQUENCY: |
9aeb4b05 MCC |
1175 | { |
1176 | struct v4l2_frequency *f = arg; | |
a6c2ba28 | 1177 | |
9aeb4b05 MCC |
1178 | memset(f, 0, sizeof(*f)); |
1179 | f->type = V4L2_TUNER_ANALOG_TV; | |
1180 | f->frequency = dev->ctl_freq; | |
a6c2ba28 | 1181 | |
9aeb4b05 MCC |
1182 | return 0; |
1183 | } | |
a6c2ba28 | 1184 | case VIDIOC_S_FREQUENCY: |
9aeb4b05 MCC |
1185 | { |
1186 | struct v4l2_frequency *f = arg; | |
a6c2ba28 | 1187 | |
9aeb4b05 MCC |
1188 | if (0 != f->tuner) |
1189 | return -EINVAL; | |
a6c2ba28 | 1190 | |
9aeb4b05 MCC |
1191 | if (V4L2_TUNER_ANALOG_TV != f->type) |
1192 | return -EINVAL; | |
a6c2ba28 | 1193 | |
3593cab5 | 1194 | mutex_lock(&dev->lock); |
9aeb4b05 MCC |
1195 | dev->ctl_freq = f->frequency; |
1196 | em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f); | |
3593cab5 | 1197 | mutex_unlock(&dev->lock); |
9aeb4b05 MCC |
1198 | return 0; |
1199 | } | |
a6c2ba28 | 1200 | case VIDIOC_CROPCAP: |
9aeb4b05 MCC |
1201 | { |
1202 | struct v4l2_cropcap *cc = arg; | |
a6c2ba28 | 1203 | |
9aeb4b05 MCC |
1204 | if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1205 | return -EINVAL; | |
1206 | cc->bounds.left = 0; | |
1207 | cc->bounds.top = 0; | |
1208 | cc->bounds.width = dev->width; | |
1209 | cc->bounds.height = dev->height; | |
1210 | cc->defrect = cc->bounds; | |
1211 | cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */ | |
1212 | cc->pixelaspect.denominator = 59; | |
1213 | return 0; | |
1214 | } | |
a6c2ba28 | 1215 | case VIDIOC_STREAMON: |
9aeb4b05 MCC |
1216 | { |
1217 | int *type = arg; | |
a6c2ba28 | 1218 | |
9aeb4b05 MCC |
1219 | if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE |
1220 | || dev->io != IO_MMAP) | |
1221 | return -EINVAL; | |
a6c2ba28 | 1222 | |
9aeb4b05 MCC |
1223 | if (list_empty(&dev->inqueue)) |
1224 | return -EINVAL; | |
a6c2ba28 | 1225 | |
9aeb4b05 | 1226 | dev->stream = STREAM_ON; /* FIXME: Start video capture here? */ |
a6c2ba28 | 1227 | |
9aeb4b05 | 1228 | em28xx_videodbg("VIDIOC_STREAMON: starting stream\n"); |
a6c2ba28 | 1229 | |
9aeb4b05 MCC |
1230 | return 0; |
1231 | } | |
a6c2ba28 | 1232 | case VIDIOC_STREAMOFF: |
9aeb4b05 MCC |
1233 | { |
1234 | int *type = arg; | |
1235 | int ret; | |
a6c2ba28 | 1236 | |
9aeb4b05 MCC |
1237 | if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE |
1238 | || dev->io != IO_MMAP) | |
1239 | return -EINVAL; | |
a6c2ba28 | 1240 | |
9aeb4b05 MCC |
1241 | if (dev->stream == STREAM_ON) { |
1242 | em28xx_videodbg ("VIDIOC_STREAMOFF: interrupting stream\n"); | |
1243 | if ((ret = em28xx_stream_interrupt(dev))) | |
1244 | return ret; | |
a6c2ba28 | 1245 | } |
9aeb4b05 MCC |
1246 | em28xx_empty_framequeues(dev); |
1247 | ||
1248 | return 0; | |
1249 | } | |
a6c2ba28 | 1250 | default: |
1251 | return v4l_compat_translate_ioctl(inode, filp, cmd, arg, | |
1252 | driver_ioctl); | |
1253 | } | |
1254 | return 0; | |
1255 | } | |
1256 | ||
1257 | /* | |
3acf2809 | 1258 | * em28xx_v4l2_do_ioctl() |
a6c2ba28 | 1259 | * This function is _not_ called directly, but from |
3acf2809 | 1260 | * em28xx_v4l2_ioctl. Userspace |
a6c2ba28 | 1261 | * copying is done already, arg is a kernel pointer. |
1262 | */ | |
3acf2809 | 1263 | static int em28xx_video_do_ioctl(struct inode *inode, struct file *filp, |
a6c2ba28 | 1264 | unsigned int cmd, void *arg) |
1265 | { | |
3acf2809 | 1266 | struct em28xx *dev = filp->private_data; |
a6c2ba28 | 1267 | |
1268 | if (!dev) | |
1269 | return -ENODEV; | |
1270 | ||
1271 | if (video_debug > 1) | |
5e453dc7 | 1272 | v4l_print_ioctl(dev->name,cmd); |
a6c2ba28 | 1273 | |
1274 | switch (cmd) { | |
1275 | ||
1276 | /* --- capabilities ------------------------------------------ */ | |
1277 | case VIDIOC_QUERYCAP: | |
1278 | { | |
9aeb4b05 MCC |
1279 | struct v4l2_capability *cap = arg; |
1280 | ||
1281 | memset(cap, 0, sizeof(*cap)); | |
1282 | strlcpy(cap->driver, "em28xx", sizeof(cap->driver)); | |
1283 | strlcpy(cap->card, em28xx_boards[dev->model].name, | |
1284 | sizeof(cap->card)); | |
1285 | strlcpy(cap->bus_info, dev->udev->dev.bus_id, | |
1286 | sizeof(cap->bus_info)); | |
1287 | cap->version = EM28XX_VERSION_CODE; | |
1288 | cap->capabilities = | |
1289 | V4L2_CAP_SLICED_VBI_CAPTURE | | |
1290 | V4L2_CAP_VIDEO_CAPTURE | | |
1291 | V4L2_CAP_AUDIO | | |
1292 | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; | |
1293 | if (dev->has_tuner) | |
1294 | cap->capabilities |= V4L2_CAP_TUNER; | |
1295 | return 0; | |
1296 | } | |
1297 | /* --- capture ioctls ---------------------------------------- */ | |
a6c2ba28 | 1298 | case VIDIOC_ENUM_FMT: |
9aeb4b05 MCC |
1299 | { |
1300 | struct v4l2_fmtdesc *fmtd = arg; | |
a6c2ba28 | 1301 | |
9aeb4b05 MCC |
1302 | if (fmtd->index != 0) |
1303 | return -EINVAL; | |
1304 | memset(fmtd, 0, sizeof(*fmtd)); | |
1305 | fmtd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1306 | strcpy(fmtd->description, "Packed YUY2"); | |
1307 | fmtd->pixelformat = V4L2_PIX_FMT_YUYV; | |
1308 | memset(fmtd->reserved, 0, sizeof(fmtd->reserved)); | |
1309 | return 0; | |
1310 | } | |
a6c2ba28 | 1311 | case VIDIOC_G_FMT: |
e5589bef | 1312 | return em28xx_get_fmt(dev, (struct v4l2_format *) arg); |
a6c2ba28 | 1313 | |
1314 | case VIDIOC_TRY_FMT: | |
1315 | case VIDIOC_S_FMT: | |
2d50f847 | 1316 | return em28xx_set_fmt(dev, cmd, (struct v4l2_format *)arg); |
a6c2ba28 | 1317 | |
a6c2ba28 | 1318 | case VIDIOC_REQBUFS: |
9aeb4b05 MCC |
1319 | { |
1320 | struct v4l2_requestbuffers *rb = arg; | |
1321 | u32 i; | |
1322 | int ret; | |
a6c2ba28 | 1323 | |
9aeb4b05 MCC |
1324 | if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
1325 | rb->memory != V4L2_MEMORY_MMAP) | |
1326 | return -EINVAL; | |
a6c2ba28 | 1327 | |
9aeb4b05 MCC |
1328 | if (dev->io == IO_READ) { |
1329 | em28xx_videodbg ("method is set to read;" | |
1330 | " close and open the device again to" | |
1331 | " choose the mmap I/O method\n"); | |
1332 | return -EINVAL; | |
1333 | } | |
a6c2ba28 | 1334 | |
9aeb4b05 MCC |
1335 | for (i = 0; i < dev->num_frames; i++) |
1336 | if (dev->frame[i].vma_use_count) { | |
1337 | em28xx_videodbg ("VIDIOC_REQBUFS failed; previous buffers are still mapped\n"); | |
1338 | return -EINVAL; | |
a6c2ba28 | 1339 | } |
1340 | ||
9aeb4b05 MCC |
1341 | if (dev->stream == STREAM_ON) { |
1342 | em28xx_videodbg("VIDIOC_REQBUFS: interrupting stream\n"); | |
1343 | if ((ret = em28xx_stream_interrupt(dev))) | |
1344 | return ret; | |
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; | |
1359 | return 0; | |
1360 | } | |
a6c2ba28 | 1361 | case VIDIOC_QUERYBUF: |
9aeb4b05 MCC |
1362 | { |
1363 | struct v4l2_buffer *b = arg; | |
a6c2ba28 | 1364 | |
9aeb4b05 MCC |
1365 | if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
1366 | b->index >= dev->num_frames || dev->io != IO_MMAP) | |
1367 | return -EINVAL; | |
a6c2ba28 | 1368 | |
9aeb4b05 | 1369 | memcpy(b, &dev->frame[b->index].buf, sizeof(*b)); |
a6c2ba28 | 1370 | |
9aeb4b05 MCC |
1371 | if (dev->frame[b->index].vma_use_count) { |
1372 | b->flags |= V4L2_BUF_FLAG_MAPPED; | |
a6c2ba28 | 1373 | } |
9aeb4b05 MCC |
1374 | if (dev->frame[b->index].state == F_DONE) |
1375 | b->flags |= V4L2_BUF_FLAG_DONE; | |
1376 | else if (dev->frame[b->index].state != F_UNUSED) | |
1377 | b->flags |= V4L2_BUF_FLAG_QUEUED; | |
1378 | return 0; | |
1379 | } | |
a6c2ba28 | 1380 | case VIDIOC_QBUF: |
9aeb4b05 MCC |
1381 | { |
1382 | struct v4l2_buffer *b = arg; | |
1383 | unsigned long lock_flags; | |
a6c2ba28 | 1384 | |
9aeb4b05 MCC |
1385 | if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
1386 | b->index >= dev->num_frames || dev->io != IO_MMAP) { | |
1387 | return -EINVAL; | |
1388 | } | |
a6c2ba28 | 1389 | |
9aeb4b05 MCC |
1390 | if (dev->frame[b->index].state != F_UNUSED) { |
1391 | return -EAGAIN; | |
1392 | } | |
1393 | dev->frame[b->index].state = F_QUEUED; | |
a6c2ba28 | 1394 | |
9aeb4b05 MCC |
1395 | /* add frame to fifo */ |
1396 | spin_lock_irqsave(&dev->queue_lock, lock_flags); | |
1397 | list_add_tail(&dev->frame[b->index].frame, | |
1398 | &dev->inqueue); | |
1399 | spin_unlock_irqrestore(&dev->queue_lock, lock_flags); | |
a6c2ba28 | 1400 | |
9aeb4b05 MCC |
1401 | return 0; |
1402 | } | |
a6c2ba28 | 1403 | case VIDIOC_DQBUF: |
9aeb4b05 MCC |
1404 | { |
1405 | struct v4l2_buffer *b = arg; | |
1406 | struct em28xx_frame_t *f; | |
1407 | unsigned long lock_flags; | |
1408 | int ret = 0; | |
a6c2ba28 | 1409 | |
9aeb4b05 MCC |
1410 | if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE |
1411 | || dev->io != IO_MMAP) | |
1412 | return -EINVAL; | |
a6c2ba28 | 1413 | |
9aeb4b05 MCC |
1414 | if (list_empty(&dev->outqueue)) { |
1415 | if (dev->stream == STREAM_OFF) | |
1416 | return -EINVAL; | |
1417 | if (filp->f_flags & O_NONBLOCK) | |
1418 | return -EAGAIN; | |
1419 | ret = wait_event_interruptible | |
1420 | (dev->wait_frame, | |
1421 | (!list_empty(&dev->outqueue)) || | |
1422 | (dev->state & DEV_DISCONNECTED)); | |
1423 | if (ret) | |
1424 | return ret; | |
1425 | if (dev->state & DEV_DISCONNECTED) | |
1426 | return -ENODEV; | |
1427 | } | |
a6c2ba28 | 1428 | |
9aeb4b05 MCC |
1429 | spin_lock_irqsave(&dev->queue_lock, lock_flags); |
1430 | f = list_entry(dev->outqueue.next, | |
1431 | struct em28xx_frame_t, frame); | |
1432 | list_del(dev->outqueue.next); | |
1433 | spin_unlock_irqrestore(&dev->queue_lock, lock_flags); | |
a6c2ba28 | 1434 | |
9aeb4b05 MCC |
1435 | f->state = F_UNUSED; |
1436 | memcpy(b, &f->buf, sizeof(*b)); | |
a6c2ba28 | 1437 | |
9aeb4b05 MCC |
1438 | if (f->vma_use_count) |
1439 | b->flags |= V4L2_BUF_FLAG_MAPPED; | |
a6c2ba28 | 1440 | |
9aeb4b05 MCC |
1441 | return 0; |
1442 | } | |
a6c2ba28 | 1443 | default: |
3acf2809 MCC |
1444 | return em28xx_do_ioctl(inode, filp, dev, cmd, arg, |
1445 | em28xx_video_do_ioctl); | |
a6c2ba28 | 1446 | } |
1447 | return 0; | |
1448 | } | |
1449 | ||
1450 | /* | |
3acf2809 MCC |
1451 | * em28xx_v4l2_ioctl() |
1452 | * handle v4l2 ioctl the main action happens in em28xx_v4l2_do_ioctl() | |
a6c2ba28 | 1453 | */ |
3acf2809 | 1454 | static int em28xx_v4l2_ioctl(struct inode *inode, struct file *filp, |
a6c2ba28 | 1455 | unsigned int cmd, unsigned long arg) |
1456 | { | |
a6c2ba28 | 1457 | int ret = 0; |
3acf2809 | 1458 | struct em28xx *dev = filp->private_data; |
a6c2ba28 | 1459 | |
3593cab5 | 1460 | if (mutex_lock_interruptible(&dev->fileop_lock)) |
a6c2ba28 | 1461 | return -ERESTARTSYS; |
1462 | ||
1463 | if (dev->state & DEV_DISCONNECTED) { | |
3acf2809 | 1464 | em28xx_errdev("v4l2 ioctl: device not present\n"); |
3593cab5 | 1465 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 1466 | return -ENODEV; |
1467 | } | |
1468 | ||
1469 | if (dev->state & DEV_MISCONFIGURED) { | |
3acf2809 | 1470 | em28xx_errdev |
a6c2ba28 | 1471 | ("v4l2 ioctl: device is misconfigured; close and open it again\n"); |
3593cab5 | 1472 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 1473 | return -EIO; |
1474 | } | |
1475 | ||
3acf2809 | 1476 | ret = video_usercopy(inode, filp, cmd, arg, em28xx_video_do_ioctl); |
a6c2ba28 | 1477 | |
3593cab5 | 1478 | mutex_unlock(&dev->fileop_lock); |
a6c2ba28 | 1479 | |
1480 | return ret; | |
1481 | } | |
1482 | ||
fa027c2a | 1483 | static const struct file_operations em28xx_v4l_fops = { |
a6c2ba28 | 1484 | .owner = THIS_MODULE, |
3acf2809 MCC |
1485 | .open = em28xx_v4l2_open, |
1486 | .release = em28xx_v4l2_close, | |
1487 | .ioctl = em28xx_v4l2_ioctl, | |
1488 | .read = em28xx_v4l2_read, | |
1489 | .poll = em28xx_v4l2_poll, | |
1490 | .mmap = em28xx_v4l2_mmap, | |
a6c2ba28 | 1491 | .llseek = no_llseek, |
17cbe2e5 MCC |
1492 | .compat_ioctl = v4l_compat_ioctl32, |
1493 | ||
a6c2ba28 | 1494 | }; |
1495 | ||
1496 | /******************************** usb interface *****************************************/ | |
1497 | ||
1498 | /* | |
3acf2809 | 1499 | * em28xx_init_dev() |
a6c2ba28 | 1500 | * allocates and inits the device structs, registers i2c bus and v4l device |
1501 | */ | |
3acf2809 | 1502 | static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev, |
a6c2ba28 | 1503 | int minor, int model) |
1504 | { | |
3acf2809 | 1505 | struct em28xx *dev = *devhandle; |
a6c2ba28 | 1506 | int retval = -ENOMEM; |
1507 | int errCode, i; | |
1508 | unsigned int maxh, maxw; | |
a6c2ba28 | 1509 | |
a6c2ba28 | 1510 | dev->udev = udev; |
1511 | dev->model = model; | |
3593cab5 | 1512 | mutex_init(&dev->lock); |
a6c2ba28 | 1513 | init_waitqueue_head(&dev->open); |
1514 | ||
3acf2809 MCC |
1515 | dev->em28xx_write_regs = em28xx_write_regs; |
1516 | dev->em28xx_read_reg = em28xx_read_reg; | |
1517 | dev->em28xx_read_reg_req_len = em28xx_read_reg_req_len; | |
1518 | dev->em28xx_write_regs_req = em28xx_write_regs_req; | |
1519 | dev->em28xx_read_reg_req = em28xx_read_reg_req; | |
1520 | dev->is_em2800 = em28xx_boards[model].is_em2800; | |
1521 | dev->has_tuner = em28xx_boards[model].has_tuner; | |
1522 | dev->has_msp34xx = em28xx_boards[model].has_msp34xx; | |
1523 | dev->tda9887_conf = em28xx_boards[model].tda9887_conf; | |
1524 | dev->decoder = em28xx_boards[model].decoder; | |
a6c2ba28 | 1525 | |
1526 | if (tuner >= 0) | |
1527 | dev->tuner_type = tuner; | |
1528 | else | |
3acf2809 | 1529 | dev->tuner_type = em28xx_boards[model].tuner_type; |
a6c2ba28 | 1530 | |
3acf2809 | 1531 | dev->video_inputs = em28xx_boards[model].vchannels; |
a6c2ba28 | 1532 | |
1533 | for (i = 0; i < TVNORMS; i++) | |
3acf2809 | 1534 | if (em28xx_boards[model].norm == tvnorms[i].mode) |
a6c2ba28 | 1535 | break; |
1536 | if (i == TVNORMS) | |
1537 | i = 0; | |
1538 | ||
1539 | dev->tvnorm = &tvnorms[i]; /* set default norm */ | |
1540 | ||
3acf2809 | 1541 | em28xx_videodbg("tvnorm=%s\n", dev->tvnorm->name); |
a6c2ba28 | 1542 | |
1543 | maxw = norm_maxw(dev); | |
1544 | maxh = norm_maxh(dev); | |
1545 | ||
1546 | /* set default image size */ | |
1547 | dev->width = maxw; | |
1548 | dev->height = maxh; | |
3acf2809 | 1549 | dev->interlaced = EM28XX_INTERLACED_DEFAULT; |
a6c2ba28 | 1550 | dev->field_size = dev->width * dev->height; |
1551 | dev->frame_size = | |
1552 | dev->interlaced ? dev->field_size << 1 : dev->field_size; | |
1553 | dev->bytesperline = dev->width * 2; | |
1554 | dev->hscale = 0; | |
1555 | dev->vscale = 0; | |
1556 | dev->ctl_input = 2; | |
1557 | ||
1558 | /* setup video picture settings for saa7113h */ | |
1559 | memset(&dev->vpic, 0, sizeof(dev->vpic)); | |
1560 | dev->vpic.colour = 128 << 8; | |
1561 | dev->vpic.hue = 128 << 8; | |
1562 | dev->vpic.brightness = 128 << 8; | |
1563 | dev->vpic.contrast = 192 << 8; | |
1564 | dev->vpic.whiteness = 128 << 8; /* This one isn't used */ | |
1565 | dev->vpic.depth = 16; | |
1566 | dev->vpic.palette = VIDEO_PALETTE_YUV422; | |
1567 | ||
a94e95b4 | 1568 | em28xx_pre_card_setup(dev); |
a6c2ba28 | 1569 | #ifdef CONFIG_MODULES |
1570 | /* request some modules */ | |
3acf2809 | 1571 | if (dev->decoder == EM28XX_SAA7113 || dev->decoder == EM28XX_SAA7114) |
f5762e44 | 1572 | request_module("saa7115"); |
3acf2809 | 1573 | if (dev->decoder == EM28XX_TVP5150) |
a6c2ba28 | 1574 | request_module("tvp5150"); |
1575 | if (dev->has_tuner) | |
1576 | request_module("tuner"); | |
a6c2ba28 | 1577 | #endif |
3acf2809 | 1578 | errCode = em28xx_config(dev); |
a6c2ba28 | 1579 | if (errCode) { |
3acf2809 | 1580 | em28xx_errdev("error configuring device\n"); |
e5589bef | 1581 | em28xx_devused&=~(1<<dev->devno); |
7c908fbb | 1582 | kfree(dev); |
a6c2ba28 | 1583 | return -ENOMEM; |
1584 | } | |
1585 | ||
3593cab5 | 1586 | mutex_lock(&dev->lock); |
a6c2ba28 | 1587 | /* register i2c bus */ |
3acf2809 | 1588 | em28xx_i2c_register(dev); |
a6c2ba28 | 1589 | |
1590 | /* Do board specific init and eeprom reading */ | |
3acf2809 | 1591 | em28xx_card_setup(dev); |
a6c2ba28 | 1592 | |
1593 | /* configure the device */ | |
3acf2809 | 1594 | em28xx_config_i2c(dev); |
a6c2ba28 | 1595 | |
3593cab5 | 1596 | mutex_unlock(&dev->lock); |
a6c2ba28 | 1597 | |
3acf2809 | 1598 | errCode = em28xx_config(dev); |
a6c2ba28 | 1599 | |
1600 | #ifdef CONFIG_MODULES | |
1601 | if (dev->has_msp34xx) | |
1602 | request_module("msp3400"); | |
1603 | #endif | |
1604 | /* allocate and fill v4l2 device struct */ | |
1605 | dev->vdev = video_device_alloc(); | |
1606 | if (NULL == dev->vdev) { | |
3acf2809 | 1607 | em28xx_errdev("cannot allocate video_device.\n"); |
e5589bef | 1608 | em28xx_devused&=~(1<<dev->devno); |
7c908fbb | 1609 | kfree(dev); |
e5589bef MCC |
1610 | return -ENOMEM; |
1611 | } | |
1612 | ||
1613 | dev->vbi_dev = video_device_alloc(); | |
1614 | if (NULL == dev->vbi_dev) { | |
1615 | em28xx_errdev("cannot allocate video_device.\n"); | |
1616 | kfree(dev->vdev); | |
e5589bef | 1617 | em28xx_devused&=~(1<<dev->devno); |
7c908fbb | 1618 | kfree(dev); |
a6c2ba28 | 1619 | return -ENOMEM; |
1620 | } | |
1621 | ||
e5589bef MCC |
1622 | /* Fills VBI device info */ |
1623 | dev->vbi_dev->type = VFL_TYPE_VBI; | |
1624 | dev->vbi_dev->hardware = 0; | |
1625 | dev->vbi_dev->fops = &em28xx_v4l_fops; | |
1626 | dev->vbi_dev->minor = -1; | |
1627 | dev->vbi_dev->dev = &dev->udev->dev; | |
1628 | dev->vbi_dev->release = video_device_release; | |
1629 | snprintf(dev->vbi_dev->name, sizeof(dev->vbi_dev->name), "%s#%d %s", | |
1630 | "em28xx",dev->devno,"vbi"); | |
1631 | ||
1632 | /* Fills CAPTURE device info */ | |
a6c2ba28 | 1633 | dev->vdev->type = VID_TYPE_CAPTURE; |
1634 | if (dev->has_tuner) | |
1635 | dev->vdev->type |= VID_TYPE_TUNER; | |
1636 | dev->vdev->hardware = 0; | |
3acf2809 | 1637 | dev->vdev->fops = &em28xx_v4l_fops; |
a6c2ba28 | 1638 | dev->vdev->minor = -1; |
1639 | dev->vdev->dev = &dev->udev->dev; | |
1640 | dev->vdev->release = video_device_release; | |
e5589bef MCC |
1641 | snprintf(dev->vdev->name, sizeof(dev->vbi_dev->name), "%s#%d %s", |
1642 | "em28xx",dev->devno,"video"); | |
1643 | ||
3acf2809 | 1644 | list_add_tail(&dev->devlist,&em28xx_devlist); |
a6c2ba28 | 1645 | |
1646 | /* register v4l2 device */ | |
3593cab5 | 1647 | mutex_lock(&dev->lock); |
e5589bef MCC |
1648 | if ((retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER, |
1649 | video_nr[dev->devno]))) { | |
3acf2809 | 1650 | em28xx_errdev("unable to register video device (error=%i).\n", |
a6c2ba28 | 1651 | retval); |
3593cab5 | 1652 | mutex_unlock(&dev->lock); |
9c75541f | 1653 | list_del(&dev->devlist); |
a6c2ba28 | 1654 | video_device_release(dev->vdev); |
e5589bef | 1655 | em28xx_devused&=~(1<<dev->devno); |
7c908fbb | 1656 | kfree(dev); |
a6c2ba28 | 1657 | return -ENODEV; |
1658 | } | |
e5589bef MCC |
1659 | |
1660 | if (video_register_device(dev->vbi_dev, VFL_TYPE_VBI, | |
1661 | vbi_nr[dev->devno]) < 0) { | |
1662 | printk("unable to register vbi device\n"); | |
3593cab5 | 1663 | mutex_unlock(&dev->lock); |
e5589bef MCC |
1664 | list_del(&dev->devlist); |
1665 | video_device_release(dev->vbi_dev); | |
1666 | video_device_release(dev->vdev); | |
e5589bef | 1667 | em28xx_devused&=~(1<<dev->devno); |
7c908fbb | 1668 | kfree(dev); |
e5589bef MCC |
1669 | return -ENODEV; |
1670 | } else { | |
1671 | printk("registered VBI\n"); | |
1672 | } | |
1673 | ||
a6c2ba28 | 1674 | if (dev->has_msp34xx) { |
1675 | /* Send a reset to other chips via gpio */ | |
3acf2809 | 1676 | em28xx_write_regs_req(dev, 0x00, 0x08, "\xf7", 1); |
9a2816c1 | 1677 | msleep(3); |
3acf2809 | 1678 | em28xx_write_regs_req(dev, 0x00, 0x08, "\xff", 1); |
9a2816c1 | 1679 | msleep(3); |
a6c2ba28 | 1680 | |
1681 | } | |
1682 | video_mux(dev, 0); | |
1683 | ||
3593cab5 | 1684 | mutex_unlock(&dev->lock); |
a6c2ba28 | 1685 | |
e5589bef MCC |
1686 | em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n", |
1687 | dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN, | |
1688 | dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN); | |
a6c2ba28 | 1689 | |
a6c2ba28 | 1690 | return 0; |
1691 | } | |
1692 | ||
1693 | /* | |
3acf2809 | 1694 | * em28xx_usb_probe() |
a6c2ba28 | 1695 | * checks for supported devices |
1696 | */ | |
3acf2809 | 1697 | static int em28xx_usb_probe(struct usb_interface *interface, |
a6c2ba28 | 1698 | const struct usb_device_id *id) |
1699 | { | |
1700 | const struct usb_endpoint_descriptor *endpoint; | |
1701 | struct usb_device *udev; | |
9d4d9c05 | 1702 | struct usb_interface *uif; |
3acf2809 | 1703 | struct em28xx *dev = NULL; |
a6c2ba28 | 1704 | int retval = -ENODEV; |
d5e52653 | 1705 | int model,i,nr,ifnum; |
a6c2ba28 | 1706 | |
1707 | udev = usb_get_dev(interface_to_usbdev(interface)); | |
d5e52653 MCC |
1708 | ifnum = interface->altsetting[0].desc.bInterfaceNumber; |
1709 | ||
e5589bef MCC |
1710 | /* Check to see next free device and mark as used */ |
1711 | nr=find_first_zero_bit(&em28xx_devused,EM28XX_MAXBOARDS); | |
1712 | em28xx_devused|=1<<nr; | |
a6c2ba28 | 1713 | |
596d92d5 | 1714 | /* Don't register audio interfaces */ |
91cad0f2 | 1715 | if (interface->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) { |
3acf2809 | 1716 | em28xx_err(DRIVER_NAME " audio device (%04x:%04x): interface %i, class %i\n", |
91cad0f2 MCC |
1717 | udev->descriptor.idVendor,udev->descriptor.idProduct, |
1718 | ifnum, | |
1719 | interface->altsetting[0].desc.bInterfaceClass); | |
e5589bef MCC |
1720 | |
1721 | em28xx_devused&=~(1<<nr); | |
596d92d5 | 1722 | return -ENODEV; |
91cad0f2 MCC |
1723 | } |
1724 | ||
3acf2809 | 1725 | em28xx_err(DRIVER_NAME " new video device (%04x:%04x): interface %i, class %i\n", |
91cad0f2 MCC |
1726 | udev->descriptor.idVendor,udev->descriptor.idProduct, |
1727 | ifnum, | |
1728 | interface->altsetting[0].desc.bInterfaceClass); | |
596d92d5 | 1729 | |
d5e52653 MCC |
1730 | endpoint = &interface->cur_altsetting->endpoint[1].desc; |
1731 | ||
59c51591 | 1732 | /* check if the device has the iso in endpoint at the correct place */ |
a6c2ba28 | 1733 | if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != |
1734 | USB_ENDPOINT_XFER_ISOC) { | |
3acf2809 | 1735 | em28xx_err(DRIVER_NAME " probing error: endpoint is non-ISO endpoint!\n"); |
e5589bef | 1736 | em28xx_devused&=~(1<<nr); |
a6c2ba28 | 1737 | return -ENODEV; |
1738 | } | |
1739 | if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) { | |
3acf2809 | 1740 | em28xx_err(DRIVER_NAME " probing error: endpoint is ISO OUT endpoint!\n"); |
e5589bef | 1741 | em28xx_devused&=~(1<<nr); |
a6c2ba28 | 1742 | return -ENODEV; |
1743 | } | |
1744 | ||
596d92d5 | 1745 | model=id->driver_info; |
596d92d5 | 1746 | |
19478843 | 1747 | if (nr >= EM28XX_MAXBOARDS) { |
9d4d9c05 | 1748 | printk (DRIVER_NAME ": Supports only %i em28xx boards.\n",EM28XX_MAXBOARDS); |
e5589bef | 1749 | em28xx_devused&=~(1<<nr); |
596d92d5 MCC |
1750 | return -ENOMEM; |
1751 | } | |
1752 | ||
1753 | /* allocate memory for our device state and initialize it */ | |
7408187d | 1754 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
596d92d5 | 1755 | if (dev == NULL) { |
3acf2809 | 1756 | em28xx_err(DRIVER_NAME ": out of memory!\n"); |
e5589bef | 1757 | em28xx_devused&=~(1<<nr); |
596d92d5 MCC |
1758 | return -ENOMEM; |
1759 | } | |
596d92d5 | 1760 | |
e5589bef MCC |
1761 | snprintf(dev->name, 29, "em28xx #%d", nr); |
1762 | dev->devno=nr; | |
1763 | ||
9d4d9c05 MCC |
1764 | /* compute alternate max packet sizes */ |
1765 | uif = udev->actconfig->interface[0]; | |
1766 | ||
1767 | dev->num_alt=uif->num_altsetting; | |
e5589bef | 1768 | em28xx_info("Alternate settings: %i\n",dev->num_alt); |
9d4d9c05 MCC |
1769 | // dev->alt_max_pkt_size = kmalloc(sizeof(*dev->alt_max_pkt_size)* |
1770 | dev->alt_max_pkt_size = kmalloc(32* | |
1771 | dev->num_alt,GFP_KERNEL); | |
1772 | if (dev->alt_max_pkt_size == NULL) { | |
e5589bef MCC |
1773 | em28xx_errdev("out of memory!\n"); |
1774 | em28xx_devused&=~(1<<nr); | |
1207cf84 | 1775 | kfree(dev); |
9d4d9c05 MCC |
1776 | return -ENOMEM; |
1777 | } | |
1778 | ||
1779 | for (i = 0; i < dev->num_alt ; i++) { | |
1780 | u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc. | |
1781 | wMaxPacketSize); | |
1782 | dev->alt_max_pkt_size[i] = | |
1783 | (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1); | |
e5589bef | 1784 | em28xx_info("Alternate setting %i, max size= %i\n",i, |
9d4d9c05 MCC |
1785 | dev->alt_max_pkt_size[i]); |
1786 | } | |
1787 | ||
3acf2809 | 1788 | if ((card[nr]>=0)&&(card[nr]<em28xx_bcount)) |
596d92d5 MCC |
1789 | model=card[nr]; |
1790 | ||
1791 | if ((model==EM2800_BOARD_UNKNOWN)||(model==EM2820_BOARD_UNKNOWN)) { | |
e5589bef | 1792 | em28xx_errdev( "Your board has no eeprom inside it and thus can't\n" |
596d92d5 MCC |
1793 | "%s: be autodetected. Please pass card=<n> insmod option to\n" |
1794 | "%s: workaround that. Redirect complaints to the vendor of\n" | |
e5589bef MCC |
1795 | "%s: the TV card. Generic type will be used." |
1796 | "%s: Best regards,\n" | |
596d92d5 MCC |
1797 | "%s: -- tux\n", |
1798 | dev->name,dev->name,dev->name,dev->name,dev->name); | |
e5589bef | 1799 | em28xx_errdev("%s: Here is a list of valid choices for the card=<n> insmod option:\n", |
596d92d5 | 1800 | dev->name); |
3acf2809 | 1801 | for (i = 0; i < em28xx_bcount; i++) { |
e5589bef MCC |
1802 | em28xx_errdev(" card=%d -> %s\n", i, |
1803 | em28xx_boards[i].name); | |
596d92d5 MCC |
1804 | } |
1805 | } | |
1806 | ||
a6c2ba28 | 1807 | /* allocate device struct */ |
3acf2809 | 1808 | retval = em28xx_init_dev(&dev, udev, nr, model); |
a6c2ba28 | 1809 | if (retval) |
1810 | return retval; | |
1811 | ||
3acf2809 | 1812 | em28xx_info("Found %s\n", em28xx_boards[model].name); |
a6c2ba28 | 1813 | |
1814 | /* save our data pointer in this interface device */ | |
1815 | usb_set_intfdata(interface, dev); | |
1816 | return 0; | |
1817 | } | |
1818 | ||
1819 | /* | |
3acf2809 | 1820 | * em28xx_usb_disconnect() |
a6c2ba28 | 1821 | * called when the device gets diconencted |
1822 | * video device will be unregistered on v4l2_close in case it is still open | |
1823 | */ | |
3acf2809 | 1824 | static void em28xx_usb_disconnect(struct usb_interface *interface) |
a6c2ba28 | 1825 | { |
3acf2809 | 1826 | struct em28xx *dev = usb_get_intfdata(interface); |
a6c2ba28 | 1827 | usb_set_intfdata(interface, NULL); |
1828 | ||
1829 | if (!dev) | |
1830 | return; | |
1831 | ||
3acf2809 | 1832 | down_write(&em28xx_disconnect); |
a6c2ba28 | 1833 | |
3593cab5 | 1834 | mutex_lock(&dev->lock); |
a6c2ba28 | 1835 | |
3acf2809 | 1836 | em28xx_info("disconnecting %s\n", dev->vdev->name); |
a6c2ba28 | 1837 | |
1838 | wake_up_interruptible_all(&dev->open); | |
1839 | ||
1840 | if (dev->users) { | |
3acf2809 | 1841 | em28xx_warn |
a6c2ba28 | 1842 | ("device /dev/video%d is open! Deregistration and memory " |
e5589bef MCC |
1843 | "deallocation are deferred on close.\n", |
1844 | dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN); | |
1845 | ||
a6c2ba28 | 1846 | dev->state |= DEV_MISCONFIGURED; |
3acf2809 | 1847 | em28xx_uninit_isoc(dev); |
a6c2ba28 | 1848 | dev->state |= DEV_DISCONNECTED; |
1849 | wake_up_interruptible(&dev->wait_frame); | |
1850 | wake_up_interruptible(&dev->wait_stream); | |
1851 | } else { | |
1852 | dev->state |= DEV_DISCONNECTED; | |
3acf2809 | 1853 | em28xx_release_resources(dev); |
a6c2ba28 | 1854 | } |
1855 | ||
3593cab5 | 1856 | mutex_unlock(&dev->lock); |
a6c2ba28 | 1857 | |
9d4d9c05 MCC |
1858 | if (!dev->users) { |
1859 | kfree(dev->alt_max_pkt_size); | |
a6c2ba28 | 1860 | kfree(dev); |
9d4d9c05 | 1861 | } |
a6c2ba28 | 1862 | |
3acf2809 | 1863 | up_write(&em28xx_disconnect); |
a6c2ba28 | 1864 | } |
1865 | ||
3acf2809 | 1866 | static struct usb_driver em28xx_usb_driver = { |
3acf2809 MCC |
1867 | .name = "em28xx", |
1868 | .probe = em28xx_usb_probe, | |
1869 | .disconnect = em28xx_usb_disconnect, | |
1870 | .id_table = em28xx_id_table, | |
a6c2ba28 | 1871 | }; |
1872 | ||
3acf2809 | 1873 | static int __init em28xx_module_init(void) |
a6c2ba28 | 1874 | { |
1875 | int result; | |
1876 | ||
1877 | printk(KERN_INFO DRIVER_NAME " v4l2 driver version %d.%d.%d loaded\n", | |
3acf2809 MCC |
1878 | (EM28XX_VERSION_CODE >> 16) & 0xff, |
1879 | (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff); | |
a6c2ba28 | 1880 | #ifdef SNAPSHOT |
1881 | printk(KERN_INFO DRIVER_NAME " snapshot date %04d-%02d-%02d\n", | |
1882 | SNAPSHOT / 10000, (SNAPSHOT / 100) % 100, SNAPSHOT % 100); | |
1883 | #endif | |
1884 | ||
1885 | /* register this driver with the USB subsystem */ | |
3acf2809 | 1886 | result = usb_register(&em28xx_usb_driver); |
a6c2ba28 | 1887 | if (result) |
3acf2809 | 1888 | em28xx_err(DRIVER_NAME |
a6c2ba28 | 1889 | " usb_register failed. Error number %d.\n", result); |
1890 | ||
1891 | return result; | |
1892 | } | |
1893 | ||
3acf2809 | 1894 | static void __exit em28xx_module_exit(void) |
a6c2ba28 | 1895 | { |
1896 | /* deregister this driver with the USB subsystem */ | |
3acf2809 | 1897 | usb_deregister(&em28xx_usb_driver); |
a6c2ba28 | 1898 | } |
1899 | ||
3acf2809 MCC |
1900 | module_init(em28xx_module_init); |
1901 | module_exit(em28xx_module_exit); |