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63eb9546 JFM |
1 | /* |
2 | * Main USB camera driver | |
3 | * | |
4 | * V4L2 by Jean-Francois Moine <http://moinejf.free.fr> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2 of the License, or (at your | |
9 | * option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
13 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | * for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software Foundation, | |
18 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
19 | */ | |
20 | ||
21 | #define MODULE_NAME "gspca" | |
22 | ||
23 | #include <linux/init.h> | |
24 | #include <linux/fs.h> | |
25 | #include <linux/vmalloc.h> | |
26 | #include <linux/sched.h> | |
27 | #include <linux/slab.h> | |
28 | #include <linux/mm.h> | |
29 | #include <linux/string.h> | |
30 | #include <linux/pagemap.h> | |
31 | #include <asm/io.h> | |
32 | #include <asm/page.h> | |
33 | #include <asm/uaccess.h> | |
34 | #include <linux/jiffies.h> | |
35 | ||
36 | #include "gspca.h" | |
37 | ||
6a7eba24 | 38 | #undef CONFIG_VIDEO_V4L1_COMPAT |
d43fa32f JFM |
39 | |
40 | /* global values */ | |
41 | #define DEF_NURBS 2 /* default number of URBs (mmap) */ | |
6a7eba24 | 42 | #define USR_NURBS 5 /* default number of URBs (userptr) */ |
d43fa32f | 43 | |
63eb9546 JFM |
44 | MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>"); |
45 | MODULE_DESCRIPTION("GSPCA USB Camera Driver"); | |
46 | MODULE_LICENSE("GPL"); | |
47 | ||
6a7eba24 JFM |
48 | #define DRIVER_VERSION_NUMBER KERNEL_VERSION(2, 1, 0) |
49 | static const char version[] = "2.1.0"; | |
63eb9546 JFM |
50 | |
51 | static int video_nr = -1; | |
52 | ||
53 | static int comp_fac = 30; /* Buffer size ratio when compressed in % */ | |
54 | ||
6a7eba24 | 55 | #ifdef VIDEO_ADV_DEBUG |
63eb9546 JFM |
56 | int gspca_debug = D_ERR | D_PROBE; |
57 | EXPORT_SYMBOL(gspca_debug); | |
58 | ||
59 | static void PDEBUG_MODE(char *txt, __u32 pixfmt, int w, int h) | |
60 | { | |
61 | if ((pixfmt >> 24) >= '0' && (pixfmt >> 24) <= 'z') { | |
62 | PDEBUG(D_CONF|D_STREAM, "%s %c%c%c%c %dx%d", | |
63 | txt, | |
64 | pixfmt & 0xff, | |
65 | (pixfmt >> 8) & 0xff, | |
66 | (pixfmt >> 16) & 0xff, | |
67 | pixfmt >> 24, | |
68 | w, h); | |
69 | } else { | |
70 | PDEBUG(D_CONF|D_STREAM, "%s 0x%08x %dx%d", | |
71 | txt, | |
72 | pixfmt, | |
73 | w, h); | |
74 | } | |
75 | } | |
76 | #else | |
77 | #define PDEBUG_MODE(txt, pixfmt, w, h) | |
78 | #endif | |
79 | ||
d43fa32f JFM |
80 | /* specific memory types - !! should different from V4L2_MEMORY_xxx */ |
81 | #define GSPCA_MEMORY_NO 0 /* V4L2_MEMORY_xxx starts from 1 */ | |
82 | #define GSPCA_MEMORY_READ 7 | |
83 | ||
d43fa32f | 84 | #define BUF_ALL_FLAGS (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE) |
d43fa32f | 85 | |
63eb9546 JFM |
86 | /* |
87 | * VMA operations. | |
88 | */ | |
89 | static void gspca_vm_open(struct vm_area_struct *vma) | |
90 | { | |
91 | struct gspca_frame *frame = vma->vm_private_data; | |
92 | ||
93 | frame->vma_use_count++; | |
94 | frame->v4l2_buf.flags |= V4L2_BUF_FLAG_MAPPED; | |
95 | } | |
96 | ||
97 | static void gspca_vm_close(struct vm_area_struct *vma) | |
98 | { | |
99 | struct gspca_frame *frame = vma->vm_private_data; | |
100 | ||
101 | if (--frame->vma_use_count <= 0) | |
102 | frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_MAPPED; | |
103 | } | |
104 | ||
105 | static struct vm_operations_struct gspca_vm_ops = { | |
106 | .open = gspca_vm_open, | |
107 | .close = gspca_vm_close, | |
108 | }; | |
109 | ||
110 | /* | |
d43fa32f | 111 | * fill a video frame from an URB and resubmit |
63eb9546 | 112 | */ |
d43fa32f JFM |
113 | static void fill_frame(struct gspca_dev *gspca_dev, |
114 | struct urb *urb) | |
63eb9546 | 115 | { |
63eb9546 | 116 | struct gspca_frame *frame; |
6a7eba24 | 117 | __u8 *data; /* address of data in the iso message */ |
63eb9546 JFM |
118 | int i, j, len, st; |
119 | cam_pkt_op pkt_scan; | |
120 | ||
6a7eba24 JFM |
121 | if (urb->status != 0) { |
122 | PDEBUG(D_ERR|D_PACK, "urb status: %d", urb->status); | |
123 | return; /* disconnection ? */ | |
124 | } | |
63eb9546 JFM |
125 | pkt_scan = gspca_dev->sd_desc->pkt_scan; |
126 | for (i = 0; i < urb->number_of_packets; i++) { | |
127 | ||
128 | /* check the availability of the frame buffer */ | |
129 | j = gspca_dev->fr_i; | |
130 | j = gspca_dev->fr_queue[j]; | |
131 | frame = &gspca_dev->frame[j]; | |
d43fa32f | 132 | if ((frame->v4l2_buf.flags & BUF_ALL_FLAGS) |
63eb9546 JFM |
133 | != V4L2_BUF_FLAG_QUEUED) { |
134 | gspca_dev->last_packet_type = DISCARD_PACKET; | |
135 | break; | |
136 | } | |
137 | ||
138 | /* check the packet status and length */ | |
139 | len = urb->iso_frame_desc[i].actual_length; | |
6a7eba24 JFM |
140 | if (len == 0) |
141 | continue; | |
63eb9546 JFM |
142 | st = urb->iso_frame_desc[i].status; |
143 | if (st) { | |
6a7eba24 JFM |
144 | PDEBUG(D_ERR, |
145 | "ISOC data error: [%d] len=%d, status=%d", | |
63eb9546 JFM |
146 | i, len, st); |
147 | gspca_dev->last_packet_type = DISCARD_PACKET; | |
148 | continue; | |
149 | } | |
63eb9546 JFM |
150 | |
151 | /* let the packet be analyzed by the subdriver */ | |
152 | PDEBUG(D_PACK, "packet [%d] o:%d l:%d", | |
153 | i, urb->iso_frame_desc[i].offset, len); | |
6a7eba24 | 154 | data = (__u8 *) urb->transfer_buffer |
63eb9546 JFM |
155 | + urb->iso_frame_desc[i].offset; |
156 | pkt_scan(gspca_dev, frame, data, len); | |
157 | } | |
158 | ||
159 | /* resubmit the URB */ | |
d43fa32f | 160 | /*fixme: don't do that when userptr and too many URBs sent*/ |
63eb9546 JFM |
161 | urb->status = 0; |
162 | st = usb_submit_urb(urb, GFP_ATOMIC); | |
163 | if (st < 0) | |
164 | PDEBUG(D_ERR|D_PACK, "usb_submit_urb() ret %d", st); | |
165 | } | |
166 | ||
d43fa32f JFM |
167 | /* |
168 | * ISOC message interrupt from the USB device | |
169 | * | |
170 | * Analyse each packet and call the subdriver for copy | |
171 | * to the frame buffer. | |
172 | * | |
173 | * There are 2 functions: | |
174 | * - the first one (isoc_irq_mmap) is used when the application | |
175 | * buffers are mapped. The frame detection and copy is done | |
176 | * at interrupt level. | |
177 | * - the second one (isoc_irq_user) is used when the application | |
178 | * buffers are in user space (userptr). The frame detection | |
179 | * and copy is done by the application. | |
180 | */ | |
6a7eba24 JFM |
181 | static void isoc_irq_mmap(struct urb *urb |
182 | ) | |
d43fa32f JFM |
183 | { |
184 | struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context; | |
185 | ||
186 | PDEBUG(D_PACK, "isoc irq mmap"); | |
187 | if (!gspca_dev->streaming) | |
188 | return; | |
189 | fill_frame(gspca_dev, urb); | |
190 | } | |
191 | ||
6a7eba24 JFM |
192 | static void isoc_irq_user(struct urb *urb |
193 | ) | |
d43fa32f JFM |
194 | { |
195 | struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context; | |
196 | int i; | |
197 | ||
198 | PDEBUG(D_PACK, "isoc irq user"); | |
199 | if (!gspca_dev->streaming) | |
200 | return; | |
201 | ||
202 | i = gspca_dev->urb_in % gspca_dev->nurbs; | |
203 | if (urb != gspca_dev->urb[i]) { | |
204 | PDEBUG(D_ERR|D_PACK, "urb out of sequence"); | |
205 | return; /* should never occur */ | |
206 | } | |
207 | ||
208 | gspca_dev->urb_in++; | |
209 | atomic_inc(&gspca_dev->nevent); /* new event */ | |
210 | wake_up_interruptible(&gspca_dev->wq); | |
211 | /*fixme: submit a new URBs until urb_in == urb_out (% nurbs)*/ | |
212 | } | |
213 | ||
214 | /* | |
215 | * treat the isoc messages | |
216 | * | |
217 | * This routine is called by the application (case userptr). | |
218 | */ | |
219 | static void isoc_transfer(struct gspca_dev *gspca_dev) | |
220 | { | |
221 | struct urb *urb; | |
222 | int i; | |
223 | ||
224 | for (;;) { | |
225 | i = gspca_dev->urb_out; | |
226 | PDEBUG(D_PACK, "isoc transf i:%d o:%d", gspca_dev->urb_in, i); | |
227 | if (i == gspca_dev->urb_in) /* isoc message to read */ | |
228 | break; /* no (more) message */ | |
229 | atomic_dec(&gspca_dev->nevent); | |
230 | /*PDEBUG(D_PACK, "isoc_trf nevent: %d", atomic_read(&gspca_dev->nevent));*/ | |
231 | gspca_dev->urb_out = i + 1; /* message treated */ | |
232 | urb = gspca_dev->urb[i % gspca_dev->nurbs]; | |
233 | fill_frame(gspca_dev, urb); | |
234 | } | |
235 | } | |
236 | ||
63eb9546 JFM |
237 | /* |
238 | * add data to the current frame | |
239 | * | |
d43fa32f JFM |
240 | * This function is called by the subdrivers at interrupt level |
241 | * or user level. | |
63eb9546 JFM |
242 | * To build a frame, these ones must add |
243 | * - one FIRST_PACKET | |
244 | * - 0 or many INTER_PACKETs | |
245 | * - one LAST_PACKET | |
246 | * DISCARD_PACKET invalidates the whole frame. | |
247 | * On LAST_PACKET, a new frame is returned. | |
248 | */ | |
249 | struct gspca_frame *gspca_frame_add(struct gspca_dev *gspca_dev, | |
250 | int packet_type, | |
251 | struct gspca_frame *frame, | |
6a7eba24 | 252 | __u8 *data, |
63eb9546 JFM |
253 | int len) |
254 | { | |
255 | int i, j; | |
256 | ||
e2997a72 | 257 | PDEBUG(D_PACK, "add t:%d l:%d", packet_type, len); |
63eb9546 JFM |
258 | |
259 | /* when start of a new frame, if the current frame buffer | |
260 | * is not queued, discard the whole frame */ | |
261 | if (packet_type == FIRST_PACKET) { | |
d43fa32f JFM |
262 | if ((frame->v4l2_buf.flags & BUF_ALL_FLAGS) |
263 | != V4L2_BUF_FLAG_QUEUED) { | |
63eb9546 JFM |
264 | gspca_dev->last_packet_type = DISCARD_PACKET; |
265 | return frame; | |
266 | } | |
267 | frame->data_end = frame->data; | |
268 | jiffies_to_timeval(get_jiffies_64(), | |
269 | &frame->v4l2_buf.timestamp); | |
270 | frame->v4l2_buf.sequence = ++gspca_dev->sequence; | |
d43fa32f | 271 | } else if (gspca_dev->last_packet_type == DISCARD_PACKET) { |
63eb9546 | 272 | return frame; |
d43fa32f | 273 | } |
63eb9546 | 274 | |
d43fa32f | 275 | /* append the packet to the frame buffer */ |
63eb9546 JFM |
276 | if (len > 0) { |
277 | if (frame->data_end - frame->data + len | |
278 | > frame->v4l2_buf.length) { | |
279 | PDEBUG(D_ERR|D_PACK, "frame overflow %d > %d", | |
280 | frame->data_end - frame->data + len, | |
281 | frame->v4l2_buf.length); | |
282 | packet_type = DISCARD_PACKET; | |
283 | } else { | |
284 | if (frame->v4l2_buf.memory != V4L2_MEMORY_USERPTR) | |
285 | memcpy(frame->data_end, data, len); | |
286 | else | |
287 | copy_to_user(frame->data_end, data, len); | |
288 | frame->data_end += len; | |
289 | } | |
290 | } | |
291 | gspca_dev->last_packet_type = packet_type; | |
292 | ||
293 | /* if last packet, wake the application and advance in the queue */ | |
294 | if (packet_type == LAST_PACKET) { | |
295 | frame->v4l2_buf.bytesused = frame->data_end - frame->data; | |
296 | frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_QUEUED; | |
297 | frame->v4l2_buf.flags |= V4L2_BUF_FLAG_DONE; | |
298 | atomic_inc(&gspca_dev->nevent); | |
299 | wake_up_interruptible(&gspca_dev->wq); /* event = new frame */ | |
d43fa32f JFM |
300 | i = (gspca_dev->fr_i + 1) % gspca_dev->nframes; |
301 | gspca_dev->fr_i = i; | |
63eb9546 JFM |
302 | PDEBUG(D_FRAM, "frame complete len:%d q:%d i:%d o:%d", |
303 | frame->v4l2_buf.bytesused, | |
304 | gspca_dev->fr_q, | |
305 | i, | |
306 | gspca_dev->fr_o); | |
307 | j = gspca_dev->fr_queue[i]; | |
308 | frame = &gspca_dev->frame[j]; | |
63eb9546 JFM |
309 | } |
310 | return frame; | |
311 | } | |
312 | EXPORT_SYMBOL(gspca_frame_add); | |
313 | ||
314 | static int gspca_is_compressed(__u32 format) | |
315 | { | |
316 | switch (format) { | |
317 | case V4L2_PIX_FMT_MJPEG: | |
318 | case V4L2_PIX_FMT_JPEG: | |
50a871fe | 319 | case V4L2_PIX_FMT_SPCA561: |
63eb9546 JFM |
320 | return 1; |
321 | } | |
322 | return 0; | |
323 | } | |
324 | ||
325 | static void *rvmalloc(unsigned long size) | |
326 | { | |
327 | void *mem; | |
328 | unsigned long adr; | |
329 | ||
d43fa32f | 330 | /* size = PAGE_ALIGN(size); (already done) */ |
63eb9546 JFM |
331 | mem = vmalloc_32(size); |
332 | if (mem != 0) { | |
333 | memset(mem, 0, size); | |
334 | adr = (unsigned long) mem; | |
335 | while ((long) size > 0) { | |
336 | SetPageReserved(vmalloc_to_page((void *) adr)); | |
337 | adr += PAGE_SIZE; | |
338 | size -= PAGE_SIZE; | |
339 | } | |
340 | } | |
341 | return mem; | |
342 | } | |
343 | ||
344 | static void rvfree(void *mem, unsigned long size) | |
345 | { | |
346 | unsigned long adr; | |
347 | ||
348 | if (!mem) | |
349 | return; | |
350 | adr = (unsigned long) mem; | |
351 | while ((long) size > 0) { | |
352 | ClearPageReserved(vmalloc_to_page((void *) adr)); | |
353 | adr += PAGE_SIZE; | |
354 | size -= PAGE_SIZE; | |
355 | } | |
356 | vfree(mem); | |
357 | } | |
358 | ||
d43fa32f JFM |
359 | static __u32 get_v4l2_depth(__u32 pixfmt) |
360 | { | |
361 | switch (pixfmt) { | |
6a7eba24 | 362 | /* case V4L2_PIX_FMT_BGR32: |
d43fa32f | 363 | case V4L2_PIX_FMT_RGB32: |
6a7eba24 | 364 | return 32; */ |
d43fa32f JFM |
365 | case V4L2_PIX_FMT_RGB24: /* 'RGB3' */ |
366 | case V4L2_PIX_FMT_BGR24: | |
367 | return 24; | |
6a7eba24 | 368 | /* case V4L2_PIX_FMT_RGB565: * 'RGBP' */ |
d43fa32f JFM |
369 | case V4L2_PIX_FMT_YUYV: /* 'YUYV' packed 4.2.2 */ |
370 | case V4L2_PIX_FMT_YYUV: /* 'YYUV' */ | |
371 | return 16; | |
372 | case V4L2_PIX_FMT_YUV420: /* 'YU12' planar 4.2.0 */ | |
50a871fe | 373 | case V4L2_PIX_FMT_SPCA501: /* 'S501' YUYV per line */ |
d43fa32f JFM |
374 | return 12; |
375 | case V4L2_PIX_FMT_MJPEG: | |
376 | case V4L2_PIX_FMT_JPEG: | |
377 | case V4L2_PIX_FMT_SBGGR8: /* 'BA81' Bayer */ | |
6a7eba24 | 378 | case V4L2_PIX_FMT_SN9C10X: /* 'S910' SN9C10x compression */ |
6a7eba24 | 379 | case V4L2_PIX_FMT_SPCA561: /* 'S561' compressed BGGR bayer */ |
d43fa32f JFM |
380 | return 8; |
381 | } | |
382 | PDEBUG(D_ERR|D_CONF, "Unknown pixel format %c%c%c%c", | |
383 | pixfmt & 0xff, | |
384 | (pixfmt >> 8) & 0xff, | |
385 | (pixfmt >> 16) & 0xff, | |
386 | pixfmt >> 24); | |
6a7eba24 | 387 | return 24; |
d43fa32f JFM |
388 | } |
389 | ||
390 | static int gspca_get_buff_size(struct gspca_dev *gspca_dev) | |
391 | { | |
392 | unsigned int size; | |
393 | ||
394 | size = gspca_dev->width * gspca_dev->height | |
395 | * get_v4l2_depth(gspca_dev->pixfmt) / 8; | |
396 | if (!size) | |
397 | return -ENOMEM; | |
398 | return size; | |
399 | } | |
400 | ||
63eb9546 | 401 | static int frame_alloc(struct gspca_dev *gspca_dev, |
d43fa32f | 402 | unsigned int count) |
63eb9546 | 403 | { |
d43fa32f JFM |
404 | struct gspca_frame *frame; |
405 | unsigned int frsz; | |
406 | int i; | |
63eb9546 | 407 | |
d43fa32f JFM |
408 | frsz = gspca_get_buff_size(gspca_dev); |
409 | if (frsz < 0) | |
410 | return frsz; | |
63eb9546 | 411 | PDEBUG(D_STREAM, "frame alloc frsz: %d", frsz); |
63eb9546 JFM |
412 | if (count > GSPCA_MAX_FRAMES) |
413 | count = GSPCA_MAX_FRAMES; | |
d43fa32f | 414 | /* if compressed (JPEG), reduce the buffer size */ |
63eb9546 | 415 | if (gspca_is_compressed(gspca_dev->pixfmt)) |
6a7eba24 | 416 | frsz = (frsz * comp_fac) / 100 + 600; /* (+ JPEG header sz) */ |
63eb9546 JFM |
417 | frsz = PAGE_ALIGN(frsz); |
418 | PDEBUG(D_STREAM, "new fr_sz: %d", frsz); | |
419 | gspca_dev->frsz = frsz; | |
d43fa32f | 420 | if (gspca_dev->memory == V4L2_MEMORY_MMAP) { |
63eb9546 JFM |
421 | gspca_dev->frbuf = rvmalloc(frsz * count); |
422 | if (!gspca_dev->frbuf) { | |
423 | err("frame alloc failed"); | |
424 | return -ENOMEM; | |
425 | } | |
426 | } | |
427 | gspca_dev->nframes = count; | |
428 | for (i = 0; i < count; i++) { | |
d43fa32f JFM |
429 | frame = &gspca_dev->frame[i]; |
430 | frame->v4l2_buf.index = i; | |
431 | frame->v4l2_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
432 | frame->v4l2_buf.flags = 0; | |
433 | frame->v4l2_buf.field = V4L2_FIELD_NONE; | |
434 | frame->v4l2_buf.length = frsz; | |
435 | frame->v4l2_buf.memory = gspca_dev->memory; | |
436 | frame->v4l2_buf.sequence = 0; | |
437 | if (gspca_dev->memory == V4L2_MEMORY_MMAP) { | |
438 | frame->data = frame->data_end = | |
439 | gspca_dev->frbuf + i * frsz; | |
440 | frame->v4l2_buf.m.offset = i * frsz; | |
63eb9546 | 441 | } |
63eb9546 JFM |
442 | } |
443 | gspca_dev->fr_i = gspca_dev->fr_o = gspca_dev->fr_q = 0; | |
444 | gspca_dev->last_packet_type = DISCARD_PACKET; | |
445 | gspca_dev->sequence = 0; | |
446 | atomic_set(&gspca_dev->nevent, 0); | |
d43fa32f | 447 | return 0; |
63eb9546 JFM |
448 | } |
449 | ||
450 | static void frame_free(struct gspca_dev *gspca_dev) | |
451 | { | |
452 | int i; | |
453 | ||
454 | PDEBUG(D_STREAM, "frame free"); | |
455 | if (gspca_dev->frbuf != 0) { | |
456 | rvfree(gspca_dev->frbuf, | |
457 | gspca_dev->nframes * gspca_dev->frsz); | |
458 | gspca_dev->frbuf = NULL; | |
459 | for (i = 0; i < gspca_dev->nframes; i++) | |
460 | gspca_dev->frame[i].data = NULL; | |
461 | } | |
462 | gspca_dev->nframes = 0; | |
463 | } | |
464 | ||
d43fa32f | 465 | static void destroy_urbs(struct gspca_dev *gspca_dev) |
63eb9546 JFM |
466 | { |
467 | struct urb *urb; | |
468 | unsigned int i; | |
469 | ||
470 | PDEBUG(D_STREAM, "kill transfer"); | |
d43fa32f | 471 | for (i = 0; i < MAX_NURBS; ++i) { |
4aa0d037 | 472 | urb = gspca_dev->urb[i]; |
63eb9546 | 473 | if (urb == NULL) |
d43fa32f | 474 | break; |
63eb9546 | 475 | |
4aa0d037 | 476 | gspca_dev->urb[i] = NULL; |
63eb9546 | 477 | usb_kill_urb(urb); |
4aa0d037 | 478 | if (urb->transfer_buffer != 0) |
63eb9546 JFM |
479 | usb_buffer_free(gspca_dev->dev, |
480 | urb->transfer_buffer_length, | |
4aa0d037 | 481 | urb->transfer_buffer, |
63eb9546 | 482 | urb->transfer_dma); |
63eb9546 JFM |
483 | usb_free_urb(urb); |
484 | } | |
63eb9546 JFM |
485 | } |
486 | ||
487 | /* | |
488 | * search an input isochronous endpoint in an alternate setting | |
489 | */ | |
490 | static struct usb_host_endpoint *alt_isoc(struct usb_host_interface *alt, | |
491 | __u8 epaddr) | |
492 | { | |
493 | struct usb_host_endpoint *ep; | |
494 | int i, attr; | |
495 | ||
496 | epaddr |= USB_DIR_IN; | |
497 | for (i = 0; i < alt->desc.bNumEndpoints; i++) { | |
498 | ep = &alt->endpoint[i]; | |
499 | if (ep->desc.bEndpointAddress == epaddr) { | |
500 | attr = ep->desc.bmAttributes | |
501 | & USB_ENDPOINT_XFERTYPE_MASK; | |
502 | if (attr == USB_ENDPOINT_XFER_ISOC) | |
503 | return ep; | |
504 | break; | |
505 | } | |
506 | } | |
507 | return NULL; | |
508 | } | |
509 | ||
510 | /* | |
511 | * search an input isochronous endpoint | |
512 | * | |
513 | * The endpoint is defined by the subdriver. | |
514 | * Use only the first isoc (some Zoran - 0x0572:0x0001 - have two such ep). | |
515 | * This routine may be called many times when the bandwidth is too small | |
516 | * (the bandwidth is checked on urb submit). | |
517 | */ | |
518 | struct usb_host_endpoint *get_isoc_ep(struct gspca_dev *gspca_dev) | |
519 | { | |
520 | struct usb_interface *intf; | |
521 | struct usb_host_endpoint *ep; | |
522 | int i, ret; | |
523 | ||
524 | intf = usb_ifnum_to_if(gspca_dev->dev, gspca_dev->iface); | |
6a7eba24 | 525 | ep = NULL; |
63eb9546 JFM |
526 | i = gspca_dev->alt; /* previous alt setting */ |
527 | while (--i > 0) { /* alt 0 is unusable */ | |
528 | ep = alt_isoc(&intf->altsetting[i], gspca_dev->cam.epaddr); | |
529 | if (ep) | |
530 | break; | |
531 | } | |
6a7eba24 | 532 | if (ep == NULL) { |
63eb9546 JFM |
533 | err("no ISOC endpoint found"); |
534 | return NULL; | |
535 | } | |
536 | PDEBUG(D_STREAM, "use ISOC alt %d ep 0x%02x", | |
537 | i, ep->desc.bEndpointAddress); | |
538 | ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, i); | |
539 | if (ret < 0) { | |
540 | err("set interface err %d", ret); | |
541 | return NULL; | |
542 | } | |
d43fa32f | 543 | gspca_dev->alt = i; /* memorize the current alt setting */ |
63eb9546 JFM |
544 | return ep; |
545 | } | |
546 | ||
547 | /* | |
548 | * create the isochronous URBs | |
549 | */ | |
550 | static int create_urbs(struct gspca_dev *gspca_dev, | |
551 | struct usb_host_endpoint *ep) | |
552 | { | |
553 | struct urb *urb; | |
d43fa32f JFM |
554 | int n, nurbs, i, psize, npkt, bsize; |
555 | usb_complete_t usb_complete; | |
63eb9546 JFM |
556 | |
557 | /* calculate the packet size and the number of packets */ | |
63eb9546 | 558 | psize = le16_to_cpu(ep->desc.wMaxPacketSize); |
d43fa32f | 559 | |
63eb9546 JFM |
560 | /* See paragraph 5.9 / table 5-11 of the usb 2.0 spec. */ |
561 | psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); | |
562 | npkt = ISO_MAX_SIZE / psize; | |
563 | if (npkt > ISO_MAX_PKT) | |
564 | npkt = ISO_MAX_PKT; | |
565 | bsize = psize * npkt; | |
63eb9546 JFM |
566 | PDEBUG(D_STREAM, |
567 | "isoc %d pkts size %d (bsize:%d)", npkt, psize, bsize); | |
d43fa32f JFM |
568 | /*fixme:change for userptr*/ |
569 | /*fixme:don't submit all URBs when userptr*/ | |
6a7eba24 | 570 | if (gspca_dev->memory == V4L2_MEMORY_MMAP) { |
d43fa32f | 571 | usb_complete = isoc_irq_mmap; |
6a7eba24 JFM |
572 | nurbs = DEF_NURBS; |
573 | } else { | |
d43fa32f | 574 | usb_complete = isoc_irq_user; |
6a7eba24 JFM |
575 | nurbs = USR_NURBS; |
576 | } | |
577 | gspca_dev->nurbs = nurbs; | |
d43fa32f | 578 | for (n = 0; n < nurbs; n++) { |
63eb9546 JFM |
579 | urb = usb_alloc_urb(npkt, GFP_KERNEL); |
580 | if (!urb) { | |
581 | err("usb_alloc_urb failed"); | |
582 | return -ENOMEM; | |
583 | } | |
4aa0d037 | 584 | urb->transfer_buffer = usb_buffer_alloc(gspca_dev->dev, |
63eb9546 JFM |
585 | bsize, |
586 | GFP_KERNEL, | |
587 | &urb->transfer_dma); | |
588 | ||
4aa0d037 | 589 | if (urb->transfer_buffer == NULL) { |
63eb9546 | 590 | usb_free_urb(urb); |
d43fa32f | 591 | destroy_urbs(gspca_dev); |
63eb9546 JFM |
592 | err("usb_buffer_urb failed"); |
593 | return -ENOMEM; | |
594 | } | |
4aa0d037 | 595 | gspca_dev->urb[n] = urb; |
63eb9546 JFM |
596 | urb->dev = gspca_dev->dev; |
597 | urb->context = gspca_dev; | |
598 | urb->pipe = usb_rcvisocpipe(gspca_dev->dev, | |
599 | ep->desc.bEndpointAddress); | |
4aa0d037 JFM |
600 | urb->transfer_flags = URB_ISO_ASAP |
601 | | URB_NO_TRANSFER_DMA_MAP; | |
63eb9546 | 602 | urb->interval = ep->desc.bInterval; |
d43fa32f | 603 | urb->complete = usb_complete; |
63eb9546 JFM |
604 | urb->number_of_packets = npkt; |
605 | urb->transfer_buffer_length = bsize; | |
606 | for (i = 0; i < npkt; i++) { | |
607 | urb->iso_frame_desc[i].length = psize; | |
608 | urb->iso_frame_desc[i].offset = psize * i; | |
609 | } | |
610 | } | |
d43fa32f | 611 | gspca_dev->urb_in = gspca_dev->urb_out = 0; |
63eb9546 JFM |
612 | return 0; |
613 | } | |
614 | ||
615 | /* | |
616 | * start the USB transfer | |
617 | */ | |
618 | static int gspca_init_transfer(struct gspca_dev *gspca_dev) | |
619 | { | |
63eb9546 JFM |
620 | struct usb_host_endpoint *ep; |
621 | int n, ret; | |
622 | ||
e2997a72 HG |
623 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) |
624 | return -ERESTARTSYS; | |
63eb9546 | 625 | |
d43fa32f JFM |
626 | /* set the higher alternate setting and |
627 | * loop until urb submit succeeds */ | |
628 | gspca_dev->alt = gspca_dev->nbalt; | |
63eb9546 | 629 | for (;;) { |
d43fa32f | 630 | PDEBUG(D_STREAM, "init transfer alt %d", gspca_dev->alt); |
63eb9546 JFM |
631 | ep = get_isoc_ep(gspca_dev); |
632 | if (ep == NULL) { | |
633 | ret = -EIO; | |
634 | goto out; | |
635 | } | |
636 | ret = create_urbs(gspca_dev, ep); | |
637 | if (ret < 0) | |
638 | goto out; | |
639 | ||
640 | /* start the cam */ | |
641 | gspca_dev->sd_desc->start(gspca_dev); | |
642 | gspca_dev->streaming = 1; | |
643 | atomic_set(&gspca_dev->nevent, 0); | |
644 | ||
645 | /* submit the URBs */ | |
d43fa32f | 646 | for (n = 0; n < gspca_dev->nurbs; n++) { |
4aa0d037 | 647 | ret = usb_submit_urb(gspca_dev->urb[n], GFP_KERNEL); |
63eb9546 JFM |
648 | if (ret < 0) { |
649 | PDEBUG(D_ERR|D_STREAM, | |
650 | "usb_submit_urb [%d] err %d", n, ret); | |
e2997a72 | 651 | gspca_dev->streaming = 0; |
d43fa32f | 652 | destroy_urbs(gspca_dev); |
63eb9546 JFM |
653 | if (ret == -ENOSPC) |
654 | break; /* try the previous alt */ | |
655 | goto out; | |
656 | } | |
657 | } | |
658 | if (ret >= 0) | |
659 | break; | |
660 | } | |
661 | out: | |
662 | mutex_unlock(&gspca_dev->usb_lock); | |
663 | return ret; | |
664 | } | |
665 | ||
666 | static int gspca_set_alt0(struct gspca_dev *gspca_dev) | |
667 | { | |
668 | int ret; | |
669 | ||
670 | ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, 0); | |
671 | if (ret < 0) | |
672 | PDEBUG(D_ERR|D_STREAM, "set interface 0 err %d", ret); | |
673 | return ret; | |
674 | } | |
675 | ||
e2997a72 | 676 | /* Note both the queue and the usb lock should be hold when calling this */ |
63eb9546 JFM |
677 | static void gspca_stream_off(struct gspca_dev *gspca_dev) |
678 | { | |
63eb9546 | 679 | gspca_dev->streaming = 0; |
d43fa32f | 680 | atomic_set(&gspca_dev->nevent, 0); |
63eb9546 JFM |
681 | if (gspca_dev->present) { |
682 | gspca_dev->sd_desc->stopN(gspca_dev); | |
d43fa32f | 683 | destroy_urbs(gspca_dev); |
63eb9546 JFM |
684 | gspca_set_alt0(gspca_dev); |
685 | gspca_dev->sd_desc->stop0(gspca_dev); | |
686 | PDEBUG(D_STREAM, "stream off OK"); | |
687 | } else { | |
d43fa32f | 688 | destroy_urbs(gspca_dev); |
63eb9546 JFM |
689 | atomic_inc(&gspca_dev->nevent); |
690 | wake_up_interruptible(&gspca_dev->wq); | |
691 | PDEBUG(D_ERR|D_STREAM, "stream off no device ??"); | |
692 | } | |
63eb9546 JFM |
693 | } |
694 | ||
d43fa32f | 695 | static void gspca_set_default_mode(struct gspca_dev *gspca_dev) |
63eb9546 JFM |
696 | { |
697 | int i; | |
698 | ||
699 | i = gspca_dev->cam.nmodes - 1; /* take the highest mode */ | |
700 | gspca_dev->curr_mode = i; | |
701 | gspca_dev->width = gspca_dev->cam.cam_mode[i].width; | |
702 | gspca_dev->height = gspca_dev->cam.cam_mode[i].height; | |
703 | gspca_dev->pixfmt = gspca_dev->cam.cam_mode[i].pixfmt; | |
63eb9546 JFM |
704 | } |
705 | ||
706 | static int wxh_to_mode(struct gspca_dev *gspca_dev, | |
707 | int width, int height) | |
708 | { | |
709 | int i; | |
710 | ||
d43fa32f JFM |
711 | for (i = gspca_dev->cam.nmodes; --i > 0; ) { |
712 | if (width >= gspca_dev->cam.cam_mode[i].width | |
713 | && height >= gspca_dev->cam.cam_mode[i].height) | |
63eb9546 JFM |
714 | break; |
715 | } | |
63eb9546 JFM |
716 | return i; |
717 | } | |
718 | ||
63eb9546 JFM |
719 | /* |
720 | * search a mode with the right pixel format | |
721 | */ | |
722 | static int gspca_get_mode(struct gspca_dev *gspca_dev, | |
723 | int mode, | |
724 | int pixfmt) | |
725 | { | |
726 | int modeU, modeD; | |
727 | ||
728 | modeU = modeD = mode; | |
729 | while ((modeU < gspca_dev->cam.nmodes) || modeD >= 0) { | |
730 | if (--modeD >= 0) { | |
731 | if (gspca_dev->cam.cam_mode[modeD].pixfmt == pixfmt) | |
732 | return modeD; | |
733 | } | |
734 | if (++modeU < gspca_dev->cam.nmodes) { | |
735 | if (gspca_dev->cam.cam_mode[modeU].pixfmt == pixfmt) | |
736 | return modeU; | |
737 | } | |
738 | } | |
739 | return -EINVAL; | |
740 | } | |
741 | ||
e078770a | 742 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, |
63eb9546 JFM |
743 | struct v4l2_fmtdesc *fmtdesc) |
744 | { | |
745 | struct gspca_dev *gspca_dev = priv; | |
6a7eba24 | 746 | int i, j, index; |
63eb9546 JFM |
747 | __u32 fmt_tb[8]; |
748 | ||
749 | PDEBUG(D_CONF, "enum fmt cap"); | |
750 | ||
751 | /* give an index to each format */ | |
752 | index = 0; | |
753 | j = 0; | |
754 | for (i = gspca_dev->cam.nmodes; --i >= 0; ) { | |
755 | fmt_tb[index] = gspca_dev->cam.cam_mode[i].pixfmt; | |
756 | j = 0; | |
757 | for (;;) { | |
758 | if (fmt_tb[j] == fmt_tb[index]) | |
759 | break; | |
760 | j++; | |
761 | } | |
762 | if (j == index) { | |
763 | if (fmtdesc->index == index) | |
764 | break; /* new format */ | |
765 | index++; | |
766 | if (index >= sizeof fmt_tb / sizeof fmt_tb[0]) | |
767 | return -EINVAL; | |
768 | } | |
769 | } | |
770 | if (i < 0) | |
771 | return -EINVAL; /* no more format */ | |
772 | ||
63eb9546 JFM |
773 | fmtdesc->pixelformat = fmt_tb[index]; |
774 | if (gspca_is_compressed(fmt_tb[index])) | |
775 | fmtdesc->flags = V4L2_FMT_FLAG_COMPRESSED; | |
d43fa32f | 776 | fmtdesc->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
63eb9546 JFM |
777 | fmtdesc->description[0] = fmtdesc->pixelformat & 0xff; |
778 | fmtdesc->description[1] = (fmtdesc->pixelformat >> 8) & 0xff; | |
779 | fmtdesc->description[2] = (fmtdesc->pixelformat >> 16) & 0xff; | |
780 | fmtdesc->description[3] = fmtdesc->pixelformat >> 24; | |
781 | fmtdesc->description[4] = '\0'; | |
782 | return 0; | |
783 | } | |
784 | ||
e078770a | 785 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, |
63eb9546 JFM |
786 | struct v4l2_format *fmt) |
787 | { | |
788 | struct gspca_dev *gspca_dev = priv; | |
789 | ||
6a7eba24 JFM |
790 | if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
791 | return -EINVAL; | |
63eb9546 JFM |
792 | fmt->fmt.pix.width = gspca_dev->width; |
793 | fmt->fmt.pix.height = gspca_dev->height; | |
794 | fmt->fmt.pix.pixelformat = gspca_dev->pixfmt; | |
6a7eba24 | 795 | #ifdef VIDEO_ADV_DEBUG |
63eb9546 JFM |
796 | if (gspca_debug & D_CONF) { |
797 | PDEBUG_MODE("get fmt cap", | |
798 | fmt->fmt.pix.pixelformat, | |
799 | fmt->fmt.pix.width, | |
800 | fmt->fmt.pix.height); | |
801 | } | |
802 | #endif | |
803 | fmt->fmt.pix.field = V4L2_FIELD_NONE; | |
804 | fmt->fmt.pix.bytesperline = get_v4l2_depth(fmt->fmt.pix.pixelformat) | |
805 | * fmt->fmt.pix.width / 8; | |
806 | fmt->fmt.pix.sizeimage = fmt->fmt.pix.bytesperline | |
807 | * fmt->fmt.pix.height; | |
808 | /* (should be in the subdriver) */ | |
809 | fmt->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; | |
810 | fmt->fmt.pix.priv = 0; | |
811 | return 0; | |
812 | } | |
813 | ||
e078770a | 814 | static int try_fmt_vid_cap(struct gspca_dev *gspca_dev, |
63eb9546 JFM |
815 | struct v4l2_format *fmt) |
816 | { | |
63eb9546 JFM |
817 | int w, h, mode, mode2, frsz; |
818 | ||
6a7eba24 JFM |
819 | if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
820 | return -EINVAL; | |
4aa0d037 JFM |
821 | w = fmt->fmt.pix.width; |
822 | h = fmt->fmt.pix.height; | |
d43fa32f JFM |
823 | |
824 | /* (luvcview problem) */ | |
825 | if (fmt->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG) | |
826 | fmt->fmt.pix.pixelformat = V4L2_PIX_FMT_JPEG; | |
6a7eba24 | 827 | #ifdef VIDEO_ADV_DEBUG |
63eb9546 JFM |
828 | if (gspca_debug & D_CONF) |
829 | PDEBUG_MODE("try fmt cap", fmt->fmt.pix.pixelformat, w, h); | |
830 | #endif | |
831 | /* search the closest mode for width and height */ | |
832 | mode = wxh_to_mode(gspca_dev, w, h); | |
833 | ||
834 | /* OK if right palette */ | |
835 | if (gspca_dev->cam.cam_mode[mode].pixfmt != fmt->fmt.pix.pixelformat) { | |
836 | ||
837 | /* else, search the closest mode with the same pixel format */ | |
838 | mode2 = gspca_get_mode(gspca_dev, mode, | |
839 | fmt->fmt.pix.pixelformat); | |
d43fa32f | 840 | if (mode2 >= 0) { |
63eb9546 | 841 | mode = mode2; |
d43fa32f | 842 | } else { |
63eb9546 JFM |
843 | |
844 | /* no chance, return this mode */ | |
6a7eba24 JFM |
845 | fmt->fmt.pix.pixelformat = |
846 | gspca_dev->cam.cam_mode[mode].pixfmt; | |
847 | #ifdef VIDEO_ADV_DEBUG | |
63eb9546 JFM |
848 | if (gspca_debug & D_CONF) { |
849 | PDEBUG_MODE("new format", | |
850 | fmt->fmt.pix.pixelformat, | |
851 | gspca_dev->cam.cam_mode[mode].width, | |
852 | gspca_dev->cam.cam_mode[mode].height); | |
853 | } | |
854 | #endif | |
855 | } | |
856 | } | |
857 | fmt->fmt.pix.width = gspca_dev->cam.cam_mode[mode].width; | |
858 | fmt->fmt.pix.height = gspca_dev->cam.cam_mode[mode].height; | |
859 | fmt->fmt.pix.bytesperline = get_v4l2_depth(fmt->fmt.pix.pixelformat) | |
860 | * fmt->fmt.pix.width / 8; | |
861 | frsz = fmt->fmt.pix.bytesperline * fmt->fmt.pix.height; | |
862 | if (gspca_is_compressed(fmt->fmt.pix.pixelformat)) | |
863 | frsz = (frsz * comp_fac) / 100; | |
864 | fmt->fmt.pix.sizeimage = frsz; | |
865 | return mode; /* used when s_fmt */ | |
866 | } | |
867 | ||
e078770a | 868 | static int vidioc_try_fmt_vid_cap(struct file *file, |
63eb9546 JFM |
869 | void *priv, |
870 | struct v4l2_format *fmt) | |
871 | { | |
4aa0d037 | 872 | struct gspca_dev *gspca_dev = priv; |
63eb9546 JFM |
873 | int ret; |
874 | ||
e078770a | 875 | ret = try_fmt_vid_cap(gspca_dev, fmt); |
63eb9546 JFM |
876 | if (ret < 0) |
877 | return ret; | |
878 | return 0; | |
879 | } | |
880 | ||
e078770a | 881 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, |
63eb9546 JFM |
882 | struct v4l2_format *fmt) |
883 | { | |
884 | struct gspca_dev *gspca_dev = priv; | |
d43fa32f | 885 | int ret; |
63eb9546 | 886 | |
6a7eba24 JFM |
887 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
888 | /* if v4l1 got JPEG */ | |
889 | if (fmt->fmt.pix.pixelformat == 0 | |
890 | && gspca_dev->streaming) { | |
891 | fmt->fmt.pix.width = gspca_dev->width; | |
892 | fmt->fmt.pix.height = gspca_dev->height; | |
893 | fmt->fmt.pix.pixelformat = gspca_dev->pixfmt; | |
894 | return 0; | |
895 | } | |
896 | #endif | |
897 | #ifdef VIDEO_ADV_DEBUG | |
63eb9546 JFM |
898 | if (gspca_debug & D_CONF) { |
899 | PDEBUG_MODE("set fmt cap", | |
900 | fmt->fmt.pix.pixelformat, | |
901 | fmt->fmt.pix.width, fmt->fmt.pix.height); | |
902 | } | |
903 | #endif | |
e2997a72 HG |
904 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
905 | return -ERESTARTSYS; | |
d43fa32f | 906 | |
e078770a | 907 | ret = try_fmt_vid_cap(gspca_dev, fmt); |
63eb9546 JFM |
908 | if (ret < 0) |
909 | goto out; | |
910 | ||
d43fa32f JFM |
911 | if (gspca_dev->nframes != 0 |
912 | && fmt->fmt.pix.sizeimage > gspca_dev->frsz) { | |
913 | ret = -EINVAL; | |
914 | goto out; | |
915 | } | |
916 | ||
50a871fe JFM |
917 | if (ret == gspca_dev->curr_mode) { |
918 | ret = 0; | |
63eb9546 | 919 | goto out; /* same mode */ |
50a871fe | 920 | } |
d43fa32f JFM |
921 | |
922 | if (gspca_dev->streaming) { | |
923 | ret = -EBUSY; | |
924 | goto out; | |
e2997a72 | 925 | } |
4aa0d037 JFM |
926 | gspca_dev->width = fmt->fmt.pix.width; |
927 | gspca_dev->height = fmt->fmt.pix.height; | |
63eb9546 JFM |
928 | gspca_dev->pixfmt = fmt->fmt.pix.pixelformat; |
929 | gspca_dev->curr_mode = ret; | |
d43fa32f | 930 | |
d43fa32f | 931 | ret = 0; |
63eb9546 JFM |
932 | out: |
933 | mutex_unlock(&gspca_dev->queue_lock); | |
934 | return ret; | |
935 | } | |
936 | ||
937 | static int dev_open(struct inode *inode, struct file *file) | |
938 | { | |
939 | struct gspca_dev *gspca_dev; | |
940 | int ret; | |
941 | ||
d43fa32f | 942 | PDEBUG(D_STREAM, "%s open", current->comm); |
63eb9546 | 943 | gspca_dev = (struct gspca_dev *) video_devdata(file); |
e2997a72 HG |
944 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
945 | return -ERESTARTSYS; | |
63eb9546 JFM |
946 | if (!gspca_dev->present) { |
947 | ret = -ENODEV; | |
948 | goto out; | |
949 | } | |
950 | ||
951 | /* if not done yet, initialize the sensor */ | |
952 | if (gspca_dev->users == 0) { | |
e2997a72 HG |
953 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) { |
954 | ret = -ERESTARTSYS; | |
63eb9546 | 955 | goto out; |
e2997a72 | 956 | } |
63eb9546 JFM |
957 | ret = gspca_dev->sd_desc->open(gspca_dev); |
958 | mutex_unlock(&gspca_dev->usb_lock); | |
959 | if (ret != 0) { | |
960 | PDEBUG(D_ERR|D_CONF, "init device failed %d", ret); | |
961 | goto out; | |
962 | } | |
e2997a72 | 963 | } else if (gspca_dev->users > 4) { /* (arbitrary value) */ |
63eb9546 JFM |
964 | ret = -EBUSY; |
965 | goto out; | |
966 | } | |
967 | gspca_dev->users++; | |
968 | file->private_data = gspca_dev; | |
6a7eba24 | 969 | #ifdef VIDEO_ADV_DEBUG |
63eb9546 | 970 | /* activate the v4l2 debug */ |
d43fa32f | 971 | if (gspca_debug & D_V4L2) |
63eb9546 JFM |
972 | gspca_dev->vdev.debug |= 3; |
973 | else | |
974 | gspca_dev->vdev.debug &= ~3; | |
975 | #endif | |
976 | out: | |
977 | mutex_unlock(&gspca_dev->queue_lock); | |
978 | if (ret != 0) | |
979 | PDEBUG(D_ERR|D_STREAM, "open failed err %d", ret); | |
980 | else | |
d43fa32f | 981 | PDEBUG(D_STREAM, "open done"); |
63eb9546 JFM |
982 | return ret; |
983 | } | |
984 | ||
985 | static int dev_close(struct inode *inode, struct file *file) | |
986 | { | |
987 | struct gspca_dev *gspca_dev = file->private_data; | |
988 | ||
d43fa32f | 989 | PDEBUG(D_STREAM, "%s close", current->comm); |
e2997a72 HG |
990 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
991 | return -ERESTARTSYS; | |
992 | gspca_dev->users--; | |
e2997a72 | 993 | |
4aa0d037 JFM |
994 | /* if the file did capture, free the streaming resources */ |
995 | if (gspca_dev->capt_file == file) { | |
996 | mutex_lock(&gspca_dev->usb_lock); | |
997 | if (gspca_dev->streaming) | |
998 | gspca_stream_off(gspca_dev); | |
999 | gspca_dev->sd_desc->close(gspca_dev); | |
1000 | mutex_unlock(&gspca_dev->usb_lock); | |
1001 | frame_free(gspca_dev); | |
4aa0d037 | 1002 | gspca_dev->capt_file = 0; |
d43fa32f | 1003 | gspca_dev->memory = GSPCA_MEMORY_NO; |
4aa0d037 | 1004 | } |
d43fa32f | 1005 | file->private_data = NULL; |
63eb9546 | 1006 | mutex_unlock(&gspca_dev->queue_lock); |
d43fa32f | 1007 | PDEBUG(D_STREAM, "close done"); |
63eb9546 JFM |
1008 | return 0; |
1009 | } | |
1010 | ||
1011 | static int vidioc_querycap(struct file *file, void *priv, | |
1012 | struct v4l2_capability *cap) | |
1013 | { | |
1014 | struct gspca_dev *gspca_dev = priv; | |
1015 | ||
1016 | PDEBUG(D_CONF, "querycap"); | |
1017 | memset(cap, 0, sizeof *cap); | |
1018 | strncpy(cap->driver, gspca_dev->sd_desc->name, sizeof cap->driver); | |
1019 | strncpy(cap->card, gspca_dev->cam.dev_name, sizeof cap->card); | |
1020 | strncpy(cap->bus_info, gspca_dev->dev->bus->bus_name, | |
1021 | sizeof cap->bus_info); | |
1022 | cap->version = DRIVER_VERSION_NUMBER; | |
1023 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | |
1024 | | V4L2_CAP_STREAMING | |
1025 | | V4L2_CAP_READWRITE; | |
1026 | return 0; | |
1027 | } | |
1028 | ||
6a7eba24 | 1029 | /* the use of V4L2_CTRL_FLAG_NEXT_CTRL asks for the controls to be sorted */ |
63eb9546 JFM |
1030 | static int vidioc_queryctrl(struct file *file, void *priv, |
1031 | struct v4l2_queryctrl *q_ctrl) | |
1032 | { | |
1033 | struct gspca_dev *gspca_dev = priv; | |
1034 | int i; | |
6a7eba24 JFM |
1035 | u32 id; |
1036 | ||
1037 | id = q_ctrl->id; | |
1038 | if (id & V4L2_CTRL_FLAG_NEXT_CTRL) { | |
1039 | id &= V4L2_CTRL_ID_MASK; | |
1040 | id++; | |
1041 | for (i = 0; i < gspca_dev->sd_desc->nctrls; i++) { | |
1042 | if (id >= gspca_dev->sd_desc->ctrls[i].qctrl.id) { | |
1043 | memcpy(q_ctrl, | |
1044 | &gspca_dev->sd_desc->ctrls[i].qctrl, | |
1045 | sizeof *q_ctrl); | |
1046 | return 0; | |
1047 | } | |
1048 | } | |
1049 | return -EINVAL; | |
1050 | } | |
63eb9546 | 1051 | for (i = 0; i < gspca_dev->sd_desc->nctrls; i++) { |
6a7eba24 | 1052 | if (id == gspca_dev->sd_desc->ctrls[i].qctrl.id) { |
63eb9546 JFM |
1053 | memcpy(q_ctrl, |
1054 | &gspca_dev->sd_desc->ctrls[i].qctrl, | |
1055 | sizeof *q_ctrl); | |
1056 | return 0; | |
1057 | } | |
1058 | } | |
6a7eba24 JFM |
1059 | if (id >= V4L2_CID_BASE |
1060 | && id <= V4L2_CID_LASTP1) { | |
63eb9546 JFM |
1061 | q_ctrl->flags |= V4L2_CTRL_FLAG_DISABLED; |
1062 | return 0; | |
1063 | } | |
1064 | return -EINVAL; | |
1065 | } | |
1066 | ||
1067 | static int vidioc_s_ctrl(struct file *file, void *priv, | |
1068 | struct v4l2_control *ctrl) | |
1069 | { | |
1070 | struct gspca_dev *gspca_dev = priv; | |
1071 | struct ctrl *ctrls; | |
1072 | int i, ret; | |
1073 | ||
1074 | PDEBUG(D_CONF, "set ctrl"); | |
1075 | for (i = 0, ctrls = gspca_dev->sd_desc->ctrls; | |
1076 | i < gspca_dev->sd_desc->nctrls; | |
1077 | i++, ctrls++) { | |
1078 | if (ctrl->id != ctrls->qctrl.id) | |
1079 | continue; | |
1080 | if (ctrl->value < ctrls->qctrl.minimum | |
1081 | && ctrl->value > ctrls->qctrl.maximum) | |
1082 | return -ERANGE; | |
1083 | PDEBUG(D_CONF, "set ctrl [%08x] = %d", ctrl->id, ctrl->value); | |
e2997a72 HG |
1084 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) |
1085 | return -ERESTARTSYS; | |
63eb9546 JFM |
1086 | ret = ctrls->set(gspca_dev, ctrl->value); |
1087 | mutex_unlock(&gspca_dev->usb_lock); | |
1088 | return ret; | |
1089 | } | |
1090 | return -EINVAL; | |
1091 | } | |
1092 | ||
1093 | static int vidioc_g_ctrl(struct file *file, void *priv, | |
1094 | struct v4l2_control *ctrl) | |
1095 | { | |
1096 | struct gspca_dev *gspca_dev = priv; | |
1097 | ||
1098 | struct ctrl *ctrls; | |
1099 | int i, ret; | |
1100 | ||
1101 | for (i = 0, ctrls = gspca_dev->sd_desc->ctrls; | |
1102 | i < gspca_dev->sd_desc->nctrls; | |
1103 | i++, ctrls++) { | |
1104 | if (ctrl->id != ctrls->qctrl.id) | |
1105 | continue; | |
e2997a72 HG |
1106 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) |
1107 | return -ERESTARTSYS; | |
63eb9546 JFM |
1108 | ret = ctrls->get(gspca_dev, &ctrl->value); |
1109 | mutex_unlock(&gspca_dev->usb_lock); | |
1110 | return ret; | |
1111 | } | |
1112 | return -EINVAL; | |
1113 | } | |
1114 | ||
1115 | static int vidioc_querymenu(struct file *file, void *priv, | |
1116 | struct v4l2_querymenu *qmenu) | |
1117 | { | |
1118 | struct gspca_dev *gspca_dev = priv; | |
1119 | ||
1120 | if (!gspca_dev->sd_desc->querymenu) | |
1121 | return -EINVAL; | |
1122 | return gspca_dev->sd_desc->querymenu(gspca_dev, qmenu); | |
1123 | } | |
1124 | ||
1125 | static int vidioc_enum_input(struct file *file, void *priv, | |
1126 | struct v4l2_input *input) | |
1127 | { | |
1128 | struct gspca_dev *gspca_dev = priv; | |
1129 | ||
1130 | if (input->index != 0) | |
1131 | return -EINVAL; | |
1132 | memset(input, 0, sizeof *input); | |
1133 | input->type = V4L2_INPUT_TYPE_CAMERA; | |
1134 | strncpy(input->name, gspca_dev->sd_desc->name, | |
1135 | sizeof input->name); | |
1136 | return 0; | |
1137 | } | |
1138 | ||
1139 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) | |
1140 | { | |
1141 | *i = 0; | |
1142 | return 0; | |
1143 | } | |
1144 | ||
1145 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) | |
1146 | { | |
1147 | if (i > 0) | |
1148 | return -EINVAL; | |
1149 | return (0); | |
1150 | } | |
1151 | ||
1152 | static int vidioc_reqbufs(struct file *file, void *priv, | |
1153 | struct v4l2_requestbuffers *rb) | |
1154 | { | |
1155 | struct gspca_dev *gspca_dev = priv; | |
d43fa32f | 1156 | int i, ret = 0; |
63eb9546 JFM |
1157 | |
1158 | PDEBUG(D_STREAM, "reqbufs %d", rb->count); | |
1159 | if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1160 | return -EINVAL; | |
d43fa32f JFM |
1161 | switch (rb->memory) { |
1162 | case V4L2_MEMORY_MMAP: | |
d43fa32f | 1163 | case V4L2_MEMORY_USERPTR: |
6a7eba24 | 1164 | break; |
d43fa32f | 1165 | default: |
63eb9546 | 1166 | return -EINVAL; |
d43fa32f | 1167 | } |
e2997a72 HG |
1168 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
1169 | return -ERESTARTSYS; | |
d43fa32f JFM |
1170 | |
1171 | for (i = 0; i < gspca_dev->nframes; i++) { | |
1172 | if (gspca_dev->frame[i].vma_use_count) { | |
1173 | ret = -EBUSY; | |
1174 | goto out; | |
1175 | } | |
1176 | } | |
1177 | ||
1178 | /* only one file may do capture */ | |
1179 | if ((gspca_dev->capt_file != 0 && gspca_dev->capt_file != file) | |
1180 | || gspca_dev->streaming) { | |
4aa0d037 JFM |
1181 | ret = -EBUSY; |
1182 | goto out; | |
1183 | } | |
d43fa32f JFM |
1184 | |
1185 | if (rb->count == 0) { /* unrequest? */ | |
1186 | frame_free(gspca_dev); | |
1187 | gspca_dev->capt_file = 0; | |
1188 | } else { | |
1189 | gspca_dev->memory = rb->memory; | |
1190 | ret = frame_alloc(gspca_dev, rb->count); | |
1191 | if (ret == 0) { | |
1192 | rb->count = gspca_dev->nframes; | |
1193 | gspca_dev->capt_file = file; | |
1194 | } | |
4aa0d037 JFM |
1195 | } |
1196 | out: | |
63eb9546 JFM |
1197 | mutex_unlock(&gspca_dev->queue_lock); |
1198 | PDEBUG(D_STREAM, "reqbufs st:%d c:%d", ret, rb->count); | |
1199 | return ret; | |
1200 | } | |
1201 | ||
1202 | static int vidioc_querybuf(struct file *file, void *priv, | |
1203 | struct v4l2_buffer *v4l2_buf) | |
1204 | { | |
1205 | struct gspca_dev *gspca_dev = priv; | |
1206 | struct gspca_frame *frame; | |
1207 | ||
1208 | PDEBUG(D_STREAM, "querybuf"); | |
1209 | if (v4l2_buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE | |
1210 | || v4l2_buf->index < 0 | |
1211 | || v4l2_buf->index >= gspca_dev->nframes) | |
1212 | return -EINVAL; | |
1213 | ||
1214 | frame = &gspca_dev->frame[v4l2_buf->index]; | |
1215 | memcpy(v4l2_buf, &frame->v4l2_buf, sizeof *v4l2_buf); | |
1216 | return 0; | |
1217 | } | |
1218 | ||
1219 | static int vidioc_streamon(struct file *file, void *priv, | |
1220 | enum v4l2_buf_type buf_type) | |
1221 | { | |
1222 | struct gspca_dev *gspca_dev = priv; | |
1223 | int ret; | |
1224 | ||
1225 | PDEBUG(D_STREAM, "stream on"); | |
1226 | if (buf_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1227 | return -EINVAL; | |
e2997a72 HG |
1228 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
1229 | return -ERESTARTSYS; | |
63eb9546 JFM |
1230 | if (!gspca_dev->present) { |
1231 | ret = -ENODEV; | |
1232 | goto out; | |
1233 | } | |
1234 | if (gspca_dev->nframes == 0) { | |
1235 | ret = -EINVAL; | |
1236 | goto out; | |
1237 | } | |
4aa0d037 JFM |
1238 | if (gspca_dev->capt_file != file) { |
1239 | ret = -EINVAL; | |
1240 | goto out; | |
1241 | } | |
63eb9546 JFM |
1242 | if (!gspca_dev->streaming) { |
1243 | ret = gspca_init_transfer(gspca_dev); | |
1244 | if (ret < 0) | |
1245 | goto out; | |
1246 | } | |
6a7eba24 | 1247 | #ifdef VIDEO_ADV_DEBUG |
63eb9546 JFM |
1248 | if (gspca_debug & D_STREAM) { |
1249 | PDEBUG_MODE("stream on OK", | |
1250 | gspca_dev->pixfmt, | |
1251 | gspca_dev->width, | |
1252 | gspca_dev->height); | |
1253 | } | |
1254 | #endif | |
e2997a72 | 1255 | ret = 0; |
63eb9546 JFM |
1256 | out: |
1257 | mutex_unlock(&gspca_dev->queue_lock); | |
1258 | return ret; | |
1259 | } | |
1260 | ||
1261 | static int vidioc_streamoff(struct file *file, void *priv, | |
1262 | enum v4l2_buf_type buf_type) | |
1263 | { | |
1264 | struct gspca_dev *gspca_dev = priv; | |
4aa0d037 | 1265 | int ret; |
63eb9546 JFM |
1266 | |
1267 | PDEBUG(D_STREAM, "stream off"); | |
1268 | if (buf_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1269 | return -EINVAL; | |
4aa0d037 JFM |
1270 | if (!gspca_dev->streaming) |
1271 | return 0; | |
1272 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) | |
1273 | return -ERESTARTSYS; | |
1274 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) { | |
1275 | ret = -ERESTARTSYS; | |
1276 | goto out; | |
63eb9546 | 1277 | } |
4aa0d037 JFM |
1278 | if (gspca_dev->capt_file != file) { |
1279 | ret = -EINVAL; | |
1280 | goto out2; | |
1281 | } | |
1282 | gspca_stream_off(gspca_dev); | |
1283 | ret = 0; | |
1284 | out2: | |
1285 | mutex_unlock(&gspca_dev->usb_lock); | |
1286 | out: | |
1287 | mutex_unlock(&gspca_dev->queue_lock); | |
1288 | return ret; | |
63eb9546 JFM |
1289 | } |
1290 | ||
1291 | static int vidioc_g_jpegcomp(struct file *file, void *priv, | |
1292 | struct v4l2_jpegcompression *jpegcomp) | |
1293 | { | |
1294 | struct gspca_dev *gspca_dev = priv; | |
1295 | int ret; | |
1296 | ||
1297 | if (!gspca_dev->sd_desc->get_jcomp) | |
1298 | return -EINVAL; | |
e2997a72 HG |
1299 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) |
1300 | return -ERESTARTSYS; | |
63eb9546 JFM |
1301 | ret = gspca_dev->sd_desc->get_jcomp(gspca_dev, jpegcomp); |
1302 | mutex_unlock(&gspca_dev->usb_lock); | |
1303 | return ret; | |
1304 | } | |
1305 | ||
1306 | static int vidioc_s_jpegcomp(struct file *file, void *priv, | |
1307 | struct v4l2_jpegcompression *jpegcomp) | |
1308 | { | |
1309 | struct gspca_dev *gspca_dev = priv; | |
1310 | int ret; | |
1311 | ||
e2997a72 HG |
1312 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) |
1313 | return -ERESTARTSYS; | |
63eb9546 JFM |
1314 | if (!gspca_dev->sd_desc->set_jcomp) |
1315 | return -EINVAL; | |
1316 | ret = gspca_dev->sd_desc->set_jcomp(gspca_dev, jpegcomp); | |
1317 | mutex_unlock(&gspca_dev->usb_lock); | |
1318 | return ret; | |
1319 | } | |
1320 | ||
1321 | static int vidioc_g_parm(struct file *filp, void *priv, | |
1322 | struct v4l2_streamparm *parm) | |
1323 | { | |
1324 | struct gspca_dev *gspca_dev = priv; | |
1325 | ||
6a7eba24 | 1326 | memset(parm, 0, sizeof *parm); |
63eb9546 JFM |
1327 | parm->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
1328 | parm->parm.capture.readbuffers = gspca_dev->nbufread; | |
1329 | return 0; | |
1330 | } | |
1331 | ||
1332 | static int vidioc_s_parm(struct file *filp, void *priv, | |
1333 | struct v4l2_streamparm *parm) | |
1334 | { | |
1335 | struct gspca_dev *gspca_dev = priv; | |
1336 | int n; | |
1337 | ||
63eb9546 JFM |
1338 | n = parm->parm.capture.readbuffers; |
1339 | if (n == 0 || n > GSPCA_MAX_FRAMES) | |
1340 | parm->parm.capture.readbuffers = gspca_dev->nbufread; | |
1341 | else | |
1342 | gspca_dev->nbufread = n; | |
63eb9546 JFM |
1343 | return 0; |
1344 | } | |
1345 | ||
6a7eba24 JFM |
1346 | static int vidioc_s_std(struct file *filp, void *priv, |
1347 | v4l2_std_id *parm) | |
1348 | { | |
1349 | return 0; | |
1350 | } | |
1351 | ||
63eb9546 JFM |
1352 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
1353 | static int vidiocgmbuf(struct file *file, void *priv, | |
1354 | struct video_mbuf *mbuf) | |
1355 | { | |
1356 | struct gspca_dev *gspca_dev = file->private_data; | |
1357 | int i; | |
1358 | ||
1359 | PDEBUG(D_STREAM, "cgmbuf"); | |
1360 | if (gspca_dev->nframes == 0) { | |
63eb9546 | 1361 | int ret; |
6a7eba24 JFM |
1362 | |
1363 | { | |
1364 | struct v4l2_format fmt; | |
1365 | ||
1366 | memset(&fmt, 0, sizeof fmt); | |
1367 | fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1368 | i = gspca_dev->cam.nmodes - 1; /* highest mode */ | |
1369 | fmt.fmt.pix.width = gspca_dev->cam.cam_mode[i].width; | |
1370 | fmt.fmt.pix.height = gspca_dev->cam.cam_mode[i].height; | |
1371 | fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_BGR24; | |
e078770a | 1372 | ret = vidioc_s_fmt_vid_cap(file, priv, &fmt); |
6a7eba24 JFM |
1373 | if (ret != 0) |
1374 | return ret; | |
1375 | } | |
1376 | { | |
1377 | struct v4l2_requestbuffers rb; | |
1378 | ||
1379 | memset(&rb, 0, sizeof rb); | |
1380 | rb.count = 4; | |
1381 | rb.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1382 | rb.memory = V4L2_MEMORY_MMAP; | |
1383 | ret = vidioc_reqbufs(file, priv, &rb); | |
1384 | if (ret != 0) | |
1385 | return ret; | |
1386 | } | |
63eb9546 JFM |
1387 | } |
1388 | mbuf->frames = gspca_dev->nframes; | |
1389 | mbuf->size = gspca_dev->frsz * gspca_dev->nframes; | |
1390 | for (i = 0; i < mbuf->frames; i++) | |
1391 | mbuf->offsets[i] = gspca_dev->frame[i].v4l2_buf.m.offset; | |
1392 | return 0; | |
1393 | } | |
1394 | #endif | |
1395 | ||
1396 | static int dev_mmap(struct file *file, struct vm_area_struct *vma) | |
1397 | { | |
1398 | struct gspca_dev *gspca_dev = file->private_data; | |
1399 | struct gspca_frame *frame = 0; | |
1400 | struct page *page; | |
1401 | unsigned long addr, start, size; | |
1402 | int i, ret; | |
1403 | #ifdef CONFIG_VIDEO_V4L1_COMPAT | |
1404 | int compat = 0; | |
1405 | #endif | |
1406 | ||
1407 | start = vma->vm_start; | |
1408 | size = vma->vm_end - vma->vm_start; | |
1409 | PDEBUG(D_STREAM, "mmap start:%08x size:%d", (int) start, (int) size); | |
1410 | ||
e2997a72 HG |
1411 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
1412 | return -ERESTARTSYS; | |
63eb9546 JFM |
1413 | if (!gspca_dev->present) { |
1414 | ret = -ENODEV; | |
4aa0d037 JFM |
1415 | goto out; |
1416 | } | |
1417 | if (gspca_dev->capt_file != file) { | |
1418 | ret = -EINVAL; | |
1419 | goto out; | |
63eb9546 JFM |
1420 | } |
1421 | ||
1422 | for (i = 0; i < gspca_dev->nframes; ++i) { | |
1423 | if (gspca_dev->frame[i].v4l2_buf.memory != V4L2_MEMORY_MMAP) { | |
1424 | PDEBUG(D_STREAM, "mmap bad memory type"); | |
1425 | break; | |
1426 | } | |
1427 | if ((gspca_dev->frame[i].v4l2_buf.m.offset >> PAGE_SHIFT) | |
1428 | == vma->vm_pgoff) { | |
1429 | frame = &gspca_dev->frame[i]; | |
1430 | break; | |
1431 | } | |
1432 | } | |
1433 | if (frame == 0) { | |
1434 | PDEBUG(D_STREAM, "mmap no frame buffer found"); | |
1435 | ret = -EINVAL; | |
4aa0d037 | 1436 | goto out; |
63eb9546 JFM |
1437 | } |
1438 | #ifdef CONFIG_VIDEO_V4L1_COMPAT | |
1439 | if (i == 0 && size == frame->v4l2_buf.length * gspca_dev->nframes) | |
1440 | compat = 1; | |
1441 | else | |
1442 | #endif | |
1443 | if (size != frame->v4l2_buf.length) { | |
1444 | PDEBUG(D_STREAM, "mmap bad size"); | |
1445 | ret = -EINVAL; | |
4aa0d037 | 1446 | goto out; |
63eb9546 JFM |
1447 | } |
1448 | ||
1449 | /* | |
1450 | * - VM_IO marks the area as being a mmaped region for I/O to a | |
1451 | * device. It also prevents the region from being core dumped. | |
1452 | */ | |
1453 | vma->vm_flags |= VM_IO; | |
1454 | ||
1455 | addr = (unsigned long) frame->data; | |
1456 | while (size > 0) { | |
1457 | page = vmalloc_to_page((void *) addr); | |
1458 | ret = vm_insert_page(vma, start, page); | |
1459 | if (ret < 0) | |
4aa0d037 | 1460 | goto out; |
63eb9546 JFM |
1461 | start += PAGE_SIZE; |
1462 | addr += PAGE_SIZE; | |
1463 | size -= PAGE_SIZE; | |
1464 | } | |
1465 | ||
1466 | vma->vm_ops = &gspca_vm_ops; | |
1467 | vma->vm_private_data = frame; | |
1468 | gspca_vm_open(vma); | |
1469 | #ifdef CONFIG_VIDEO_V4L1_COMPAT | |
1470 | if (compat) { | |
1471 | /*fixme: ugly*/ | |
1472 | for (i = 1; i < gspca_dev->nframes; ++i) | |
1473 | gspca_dev->frame[i].v4l2_buf.flags |= | |
1474 | V4L2_BUF_FLAG_MAPPED; | |
1475 | } | |
1476 | #endif | |
e2997a72 | 1477 | ret = 0; |
4aa0d037 | 1478 | out: |
63eb9546 JFM |
1479 | mutex_unlock(&gspca_dev->queue_lock); |
1480 | return ret; | |
1481 | } | |
1482 | ||
63eb9546 JFM |
1483 | /* |
1484 | * wait for a video frame | |
1485 | * | |
1486 | * If a frame is ready, its index is returned. | |
1487 | */ | |
d43fa32f | 1488 | static int frame_wait(struct gspca_dev *gspca_dev, |
63eb9546 JFM |
1489 | int nonblock_ing) |
1490 | { | |
1491 | struct gspca_frame *frame; | |
1492 | int i, j, ret; | |
1493 | ||
d43fa32f JFM |
1494 | /* if userptr, treat the awaiting URBs */ |
1495 | if (gspca_dev->memory == V4L2_MEMORY_USERPTR) | |
1496 | isoc_transfer(gspca_dev); | |
1497 | ||
1498 | /* check if a frame is ready */ | |
63eb9546 JFM |
1499 | i = gspca_dev->fr_o; |
1500 | j = gspca_dev->fr_queue[i]; | |
1501 | frame = &gspca_dev->frame[j]; | |
1502 | if (frame->v4l2_buf.flags & V4L2_BUF_FLAG_DONE) | |
1503 | goto ok; | |
1504 | if (nonblock_ing) /* no frame yet */ | |
1505 | return -EAGAIN; | |
1506 | ||
1507 | /* wait till a frame is ready */ | |
1508 | for (;;) { | |
4aa0d037 JFM |
1509 | ret = wait_event_interruptible_timeout(gspca_dev->wq, |
1510 | atomic_read(&gspca_dev->nevent) > 0, | |
1511 | msecs_to_jiffies(3000)); | |
1512 | if (ret <= 0) { | |
1513 | if (ret < 0) | |
1514 | return ret; | |
1515 | return -EIO; | |
1516 | } | |
e2997a72 HG |
1517 | if (!gspca_dev->streaming || !gspca_dev->present) |
1518 | return -EIO; | |
d43fa32f JFM |
1519 | if (gspca_dev->memory == V4L2_MEMORY_USERPTR) |
1520 | isoc_transfer(gspca_dev); | |
63eb9546 JFM |
1521 | i = gspca_dev->fr_o; |
1522 | j = gspca_dev->fr_queue[i]; | |
1523 | frame = &gspca_dev->frame[j]; | |
1524 | if (frame->v4l2_buf.flags & V4L2_BUF_FLAG_DONE) | |
1525 | break; | |
1526 | } | |
63eb9546 JFM |
1527 | ok: |
1528 | atomic_dec(&gspca_dev->nevent); | |
1529 | gspca_dev->fr_o = (i + 1) % gspca_dev->nframes; | |
1530 | PDEBUG(D_FRAM, "frame wait q:%d i:%d o:%d", | |
1531 | gspca_dev->fr_q, | |
1532 | gspca_dev->fr_i, | |
1533 | gspca_dev->fr_o); | |
e2997a72 HG |
1534 | |
1535 | if (gspca_dev->sd_desc->dq_callback) | |
1536 | gspca_dev->sd_desc->dq_callback(gspca_dev); | |
1537 | ||
63eb9546 JFM |
1538 | return j; |
1539 | } | |
1540 | ||
1541 | /* | |
1542 | * dequeue a video buffer | |
1543 | * | |
1544 | * If nonblock_ing is false, block until a buffer is available. | |
1545 | */ | |
1546 | static int vidioc_dqbuf(struct file *file, void *priv, | |
1547 | struct v4l2_buffer *v4l2_buf) | |
1548 | { | |
1549 | struct gspca_dev *gspca_dev = priv; | |
1550 | struct gspca_frame *frame; | |
1551 | int i, ret; | |
1552 | ||
1553 | PDEBUG(D_FRAM, "dqbuf"); | |
1554 | if (v4l2_buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE | |
1555 | || (v4l2_buf->memory != V4L2_MEMORY_MMAP | |
1556 | && v4l2_buf->memory != V4L2_MEMORY_USERPTR)) | |
1557 | return -EINVAL; | |
1558 | if (!gspca_dev->streaming) | |
1559 | return -EINVAL; | |
4aa0d037 JFM |
1560 | if (gspca_dev->capt_file != file) { |
1561 | ret = -EINVAL; | |
1562 | goto out; | |
1563 | } | |
63eb9546 JFM |
1564 | |
1565 | /* only one read */ | |
1566 | if (mutex_lock_interruptible(&gspca_dev->read_lock)) | |
1567 | return -ERESTARTSYS; | |
1568 | ||
d43fa32f | 1569 | ret = frame_wait(gspca_dev, file->f_flags & O_NONBLOCK); |
63eb9546 | 1570 | if (ret < 0) |
4aa0d037 | 1571 | goto out; |
63eb9546 JFM |
1572 | i = ret; /* frame index */ |
1573 | frame = &gspca_dev->frame[i]; | |
1574 | frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_DONE; | |
1575 | memcpy(v4l2_buf, &frame->v4l2_buf, sizeof *v4l2_buf); | |
1576 | PDEBUG(D_FRAM, "dqbuf %d", i); | |
1577 | ret = 0; | |
4aa0d037 | 1578 | out: |
63eb9546 JFM |
1579 | mutex_unlock(&gspca_dev->read_lock); |
1580 | return ret; | |
1581 | } | |
1582 | ||
1583 | /* | |
1584 | * queue a video buffer | |
1585 | * | |
1586 | * Attempting to queue a buffer that has already been | |
1587 | * queued will return -EINVAL. | |
1588 | */ | |
1589 | static int vidioc_qbuf(struct file *file, void *priv, | |
1590 | struct v4l2_buffer *v4l2_buf) | |
1591 | { | |
1592 | struct gspca_dev *gspca_dev = priv; | |
1593 | struct gspca_frame *frame; | |
1594 | int i, index, ret; | |
1595 | ||
1596 | PDEBUG(D_FRAM, "qbuf %d", v4l2_buf->index); | |
1597 | if (v4l2_buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1598 | return -EINVAL; | |
1599 | ||
1600 | index = v4l2_buf->index; | |
1601 | if ((unsigned) index >= gspca_dev->nframes) { | |
d43fa32f | 1602 | PDEBUG(D_FRAM, |
63eb9546 JFM |
1603 | "qbuf idx %d >= %d", index, gspca_dev->nframes); |
1604 | return -EINVAL; | |
1605 | } | |
1606 | frame = &gspca_dev->frame[index]; | |
1607 | ||
1608 | if (v4l2_buf->memory != frame->v4l2_buf.memory) { | |
d43fa32f | 1609 | PDEBUG(D_FRAM, "qbuf bad memory type"); |
63eb9546 JFM |
1610 | return -EINVAL; |
1611 | } | |
4aa0d037 JFM |
1612 | if (gspca_dev->capt_file != file) |
1613 | return -EINVAL; | |
63eb9546 | 1614 | |
e2997a72 HG |
1615 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
1616 | return -ERESTARTSYS; | |
1617 | ||
d43fa32f JFM |
1618 | if (frame->v4l2_buf.flags & BUF_ALL_FLAGS) { |
1619 | PDEBUG(D_FRAM, "qbuf bad state"); | |
63eb9546 JFM |
1620 | ret = -EINVAL; |
1621 | goto out; | |
1622 | } | |
1623 | ||
1624 | frame->v4l2_buf.flags |= V4L2_BUF_FLAG_QUEUED; | |
d43fa32f | 1625 | /* frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_DONE; */ |
63eb9546 | 1626 | |
d43fa32f | 1627 | if (frame->v4l2_buf.memory == V4L2_MEMORY_USERPTR) { |
63eb9546 | 1628 | frame->data = frame->data_end = |
6a7eba24 | 1629 | (__u8 *) v4l2_buf->m.userptr; |
63eb9546 JFM |
1630 | frame->v4l2_buf.m.userptr = v4l2_buf->m.userptr; |
1631 | frame->v4l2_buf.length = v4l2_buf->length; | |
1632 | } | |
1633 | ||
1634 | /* put the buffer in the 'queued' queue */ | |
1635 | i = gspca_dev->fr_q; | |
1636 | gspca_dev->fr_queue[i] = index; | |
1637 | gspca_dev->fr_q = (i + 1) % gspca_dev->nframes; | |
1638 | PDEBUG(D_FRAM, "qbuf q:%d i:%d o:%d", | |
1639 | gspca_dev->fr_q, | |
1640 | gspca_dev->fr_i, | |
1641 | gspca_dev->fr_o); | |
1642 | ||
1643 | v4l2_buf->flags |= V4L2_BUF_FLAG_QUEUED; | |
1644 | v4l2_buf->flags &= ~V4L2_BUF_FLAG_DONE; | |
1645 | ret = 0; | |
1646 | out: | |
1647 | mutex_unlock(&gspca_dev->queue_lock); | |
1648 | return ret; | |
1649 | } | |
1650 | ||
d43fa32f JFM |
1651 | /* |
1652 | * allocate the resources for read() | |
1653 | */ | |
1654 | static int read_alloc(struct gspca_dev *gspca_dev, | |
1655 | struct file *file) | |
63eb9546 | 1656 | { |
63eb9546 | 1657 | struct v4l2_buffer v4l2_buf; |
d43fa32f | 1658 | int i, ret; |
63eb9546 | 1659 | |
d43fa32f | 1660 | PDEBUG(D_STREAM, "read alloc"); |
63eb9546 JFM |
1661 | if (gspca_dev->nframes == 0) { |
1662 | struct v4l2_requestbuffers rb; | |
1663 | ||
1664 | memset(&rb, 0, sizeof rb); | |
1665 | rb.count = gspca_dev->nbufread; | |
1666 | rb.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1667 | rb.memory = V4L2_MEMORY_MMAP; | |
1668 | ret = vidioc_reqbufs(file, gspca_dev, &rb); | |
1669 | if (ret != 0) { | |
d43fa32f | 1670 | PDEBUG(D_STREAM, "read reqbuf err %d", ret); |
63eb9546 JFM |
1671 | return ret; |
1672 | } | |
1673 | memset(&v4l2_buf, 0, sizeof v4l2_buf); | |
1674 | v4l2_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1675 | v4l2_buf.memory = V4L2_MEMORY_MMAP; | |
1676 | for (i = 0; i < gspca_dev->nbufread; i++) { | |
1677 | v4l2_buf.index = i; | |
1678 | /*fixme: ugly!*/ | |
1679 | gspca_dev->frame[i].v4l2_buf.flags |= | |
1680 | V4L2_BUF_FLAG_MAPPED; | |
1681 | ret = vidioc_qbuf(file, gspca_dev, &v4l2_buf); | |
1682 | if (ret != 0) { | |
1683 | PDEBUG(D_STREAM, "read qbuf err: %d", ret); | |
1684 | return ret; | |
1685 | } | |
1686 | } | |
d43fa32f JFM |
1687 | gspca_dev->memory = GSPCA_MEMORY_READ; |
1688 | } | |
4aa0d037 | 1689 | |
d43fa32f JFM |
1690 | /* start streaming */ |
1691 | ret = vidioc_streamon(file, gspca_dev, V4L2_BUF_TYPE_VIDEO_CAPTURE); | |
1692 | if (ret != 0) | |
1693 | PDEBUG(D_STREAM, "read streamon err %d", ret); | |
1694 | return ret; | |
1695 | } | |
1696 | ||
1697 | static unsigned int dev_poll(struct file *file, poll_table *wait) | |
1698 | { | |
1699 | struct gspca_dev *gspca_dev = file->private_data; | |
1700 | int i, ret; | |
1701 | ||
1702 | PDEBUG(D_FRAM, "poll"); | |
1703 | ||
1704 | poll_wait(file, &gspca_dev->wq, wait); | |
1705 | if (!gspca_dev->present) | |
1706 | return POLLERR; | |
1707 | ||
1708 | /* if not streaming, the user would use read() */ | |
63eb9546 | 1709 | if (!gspca_dev->streaming) { |
d43fa32f JFM |
1710 | if (gspca_dev->memory != GSPCA_MEMORY_NO) { |
1711 | ret = POLLERR; /* not the 1st time */ | |
1712 | goto out; | |
1713 | } | |
1714 | ret = read_alloc(gspca_dev, file); | |
63eb9546 | 1715 | if (ret != 0) { |
d43fa32f JFM |
1716 | ret = POLLERR; |
1717 | goto out; | |
63eb9546 JFM |
1718 | } |
1719 | } | |
1720 | ||
d43fa32f JFM |
1721 | if (mutex_lock_interruptible(&gspca_dev->queue_lock) != 0) |
1722 | return POLLERR; | |
1723 | if (!gspca_dev->present) { | |
1724 | ret = POLLERR; | |
1725 | goto out; | |
1726 | } | |
1727 | ||
1728 | /* if not mmap, treat the awaiting URBs */ | |
1729 | if (gspca_dev->memory == V4L2_MEMORY_USERPTR | |
1730 | && gspca_dev->capt_file == file) | |
1731 | isoc_transfer(gspca_dev); | |
1732 | ||
1733 | i = gspca_dev->fr_o; | |
1734 | i = gspca_dev->fr_queue[i]; | |
1735 | if (gspca_dev->frame[i].v4l2_buf.flags & V4L2_BUF_FLAG_DONE) | |
1736 | ret = POLLIN | POLLRDNORM; /* something to read */ | |
1737 | else | |
1738 | ret = 0; | |
1739 | out: | |
1740 | mutex_unlock(&gspca_dev->queue_lock); | |
1741 | return ret; | |
1742 | } | |
1743 | ||
1744 | static ssize_t dev_read(struct file *file, char __user *data, | |
1745 | size_t count, loff_t *ppos) | |
1746 | { | |
1747 | struct gspca_dev *gspca_dev = file->private_data; | |
1748 | struct gspca_frame *frame; | |
1749 | struct v4l2_buffer v4l2_buf; | |
1750 | struct timeval timestamp; | |
1751 | int i, ret, ret2; | |
1752 | ||
1753 | PDEBUG(D_FRAM, "read (%d)", count); | |
1754 | if (!gspca_dev->present) | |
1755 | return -ENODEV; | |
1756 | switch (gspca_dev->memory) { | |
1757 | case GSPCA_MEMORY_NO: /* first time */ | |
1758 | ret = read_alloc(gspca_dev, file); | |
1759 | if (ret != 0) | |
1760 | return ret; | |
1761 | break; | |
1762 | case GSPCA_MEMORY_READ: | |
1763 | if (gspca_dev->capt_file != file) | |
1764 | return -EINVAL; | |
1765 | break; | |
1766 | default: | |
1767 | return -EINVAL; | |
1768 | } | |
1769 | ||
63eb9546 JFM |
1770 | /* get a frame */ |
1771 | jiffies_to_timeval(get_jiffies_64(), ×tamp); | |
1772 | timestamp.tv_sec--; | |
1773 | for (i = 0; i < 2; i++) { | |
1774 | memset(&v4l2_buf, 0, sizeof v4l2_buf); | |
1775 | v4l2_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1776 | v4l2_buf.memory = V4L2_MEMORY_MMAP; | |
1777 | ret = vidioc_dqbuf(file, gspca_dev, &v4l2_buf); | |
1778 | if (ret != 0) { | |
1779 | PDEBUG(D_STREAM, "read dqbuf err %d", ret); | |
1780 | return ret; | |
1781 | } | |
1782 | ||
1783 | /* if the process slept for more than 1 second, | |
1784 | * get a brand new frame */ | |
1785 | frame = &gspca_dev->frame[v4l2_buf.index]; | |
1786 | if (frame->v4l2_buf.timestamp.tv_sec >= timestamp.tv_sec) | |
1787 | break; | |
1788 | ret = vidioc_qbuf(file, gspca_dev, &v4l2_buf); | |
1789 | if (ret != 0) { | |
1790 | PDEBUG(D_STREAM, "read qbuf err %d", ret); | |
1791 | return ret; | |
1792 | } | |
1793 | } | |
1794 | ||
1795 | /* copy the frame */ | |
1796 | if (count < frame->v4l2_buf.bytesused) { | |
1797 | PDEBUG(D_STREAM, "read bad count: %d < %d", | |
1798 | count, frame->v4l2_buf.bytesused); | |
1799 | /*fixme: special errno?*/ | |
1800 | ret = -EINVAL; | |
1801 | goto out; | |
1802 | } | |
1803 | count = frame->v4l2_buf.bytesused; | |
1804 | ret = copy_to_user(data, frame->data, count); | |
1805 | if (ret != 0) { | |
1806 | PDEBUG(D_ERR|D_STREAM, | |
1807 | "read cp to user lack %d / %d", ret, count); | |
1808 | ret = -EFAULT; | |
1809 | goto out; | |
1810 | } | |
1811 | ret = count; | |
1812 | out: | |
1813 | /* in each case, requeue the buffer */ | |
1814 | ret2 = vidioc_qbuf(file, gspca_dev, &v4l2_buf); | |
1815 | if (ret2 != 0) | |
1816 | return ret2; | |
1817 | return ret; | |
1818 | } | |
1819 | ||
d43fa32f | 1820 | static void dev_release(struct video_device *vfd) |
63eb9546 JFM |
1821 | { |
1822 | /* nothing */ | |
1823 | } | |
1824 | ||
1825 | static struct file_operations dev_fops = { | |
1826 | .owner = THIS_MODULE, | |
1827 | .open = dev_open, | |
1828 | .release = dev_close, | |
1829 | .read = dev_read, | |
1830 | .mmap = dev_mmap, | |
1831 | .ioctl = video_ioctl2, | |
6a7eba24 JFM |
1832 | #ifdef CONFIG_COMPAT |
1833 | .compat_ioctl = v4l_compat_ioctl32, | |
1834 | #endif | |
63eb9546 JFM |
1835 | .llseek = no_llseek, |
1836 | .poll = dev_poll, | |
1837 | }; | |
1838 | ||
1839 | static struct video_device gspca_template = { | |
1840 | .name = "gspca main driver", | |
1841 | .type = VID_TYPE_CAPTURE, | |
1842 | .fops = &dev_fops, | |
d43fa32f | 1843 | .release = dev_release, /* mandatory */ |
63eb9546 JFM |
1844 | .minor = -1, |
1845 | .vidioc_querycap = vidioc_querycap, | |
1846 | .vidioc_dqbuf = vidioc_dqbuf, | |
1847 | .vidioc_qbuf = vidioc_qbuf, | |
e078770a MCC |
1848 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, |
1849 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
1850 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
1851 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
63eb9546 JFM |
1852 | .vidioc_streamon = vidioc_streamon, |
1853 | .vidioc_queryctrl = vidioc_queryctrl, | |
1854 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
1855 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
1856 | .vidioc_querymenu = vidioc_querymenu, | |
1857 | .vidioc_enum_input = vidioc_enum_input, | |
1858 | .vidioc_g_input = vidioc_g_input, | |
1859 | .vidioc_s_input = vidioc_s_input, | |
1860 | .vidioc_reqbufs = vidioc_reqbufs, | |
1861 | .vidioc_querybuf = vidioc_querybuf, | |
1862 | .vidioc_streamoff = vidioc_streamoff, | |
1863 | .vidioc_g_jpegcomp = vidioc_g_jpegcomp, | |
1864 | .vidioc_s_jpegcomp = vidioc_s_jpegcomp, | |
1865 | .vidioc_g_parm = vidioc_g_parm, | |
1866 | .vidioc_s_parm = vidioc_s_parm, | |
6a7eba24 | 1867 | .vidioc_s_std = vidioc_s_std, |
63eb9546 JFM |
1868 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
1869 | .vidiocgmbuf = vidiocgmbuf, | |
1870 | #endif | |
1871 | }; | |
1872 | ||
1873 | /* | |
1874 | * probe and create a new gspca device | |
1875 | * | |
1876 | * This function must be called by the sub-driver when it is | |
1877 | * called for probing a new device. | |
1878 | */ | |
1879 | int gspca_dev_probe(struct usb_interface *intf, | |
1880 | const struct usb_device_id *id, | |
1881 | const struct sd_desc *sd_desc, | |
d43fa32f JFM |
1882 | int dev_size, |
1883 | struct module *module) | |
63eb9546 JFM |
1884 | { |
1885 | struct usb_interface_descriptor *interface; | |
1886 | struct gspca_dev *gspca_dev; | |
1887 | struct usb_device *dev = interface_to_usbdev(intf); | |
1888 | int ret; | |
63eb9546 | 1889 | |
6a7eba24 | 1890 | PDEBUG(D_PROBE, "probing %04x:%04x", id->idVendor, id->idProduct); |
63eb9546 JFM |
1891 | |
1892 | /* we don't handle multi-config cameras */ | |
1893 | if (dev->descriptor.bNumConfigurations != 1) | |
1894 | return -ENODEV; | |
1895 | interface = &intf->cur_altsetting->desc; | |
1896 | if (interface->bInterfaceNumber > 0) | |
1897 | return -ENODEV; | |
1898 | ||
1899 | /* create the device */ | |
1900 | if (dev_size < sizeof *gspca_dev) | |
1901 | dev_size = sizeof *gspca_dev; | |
1902 | gspca_dev = kzalloc(dev_size, GFP_KERNEL); | |
1903 | if (gspca_dev == NULL) { | |
1904 | err("couldn't kzalloc gspca struct"); | |
1905 | return -EIO; | |
1906 | } | |
1907 | gspca_dev->dev = dev; | |
1908 | gspca_dev->iface = interface->bInterfaceNumber; | |
d43fa32f | 1909 | gspca_dev->nbalt = intf->num_altsetting; |
63eb9546 JFM |
1910 | gspca_dev->sd_desc = sd_desc; |
1911 | /* gspca_dev->users = 0; (done by kzalloc) */ | |
1912 | gspca_dev->nbufread = 2; | |
1913 | ||
1914 | /* configure the subdriver */ | |
1915 | ret = gspca_dev->sd_desc->config(gspca_dev, id); | |
1916 | if (ret < 0) | |
1917 | goto out; | |
1918 | ret = gspca_set_alt0(gspca_dev); | |
1919 | if (ret < 0) | |
1920 | goto out; | |
1921 | gspca_set_default_mode(gspca_dev); | |
1922 | ||
1923 | mutex_init(&gspca_dev->usb_lock); | |
1924 | mutex_init(&gspca_dev->read_lock); | |
1925 | mutex_init(&gspca_dev->queue_lock); | |
1926 | init_waitqueue_head(&gspca_dev->wq); | |
1927 | ||
1928 | /* init video stuff */ | |
1929 | memcpy(&gspca_dev->vdev, &gspca_template, sizeof gspca_template); | |
1930 | gspca_dev->vdev.dev = &dev->dev; | |
d43fa32f JFM |
1931 | memcpy(&gspca_dev->fops, &dev_fops, sizeof gspca_dev->fops); |
1932 | gspca_dev->vdev.fops = &gspca_dev->fops; | |
1933 | gspca_dev->fops.owner = module; /* module protection */ | |
63eb9546 JFM |
1934 | ret = video_register_device(&gspca_dev->vdev, |
1935 | VFL_TYPE_GRABBER, | |
1936 | video_nr); | |
1937 | if (ret < 0) { | |
1938 | err("video_register_device err %d", ret); | |
1939 | goto out; | |
1940 | } | |
1941 | ||
1942 | gspca_dev->present = 1; | |
1943 | usb_set_intfdata(intf, gspca_dev); | |
1944 | PDEBUG(D_PROBE, "probe ok"); | |
1945 | return 0; | |
1946 | out: | |
1947 | kfree(gspca_dev); | |
1948 | return ret; | |
1949 | } | |
1950 | EXPORT_SYMBOL(gspca_dev_probe); | |
1951 | ||
1952 | /* | |
1953 | * USB disconnection | |
1954 | * | |
1955 | * This function must be called by the sub-driver | |
1956 | * when the device disconnects, after the specific resources are freed. | |
1957 | */ | |
1958 | void gspca_disconnect(struct usb_interface *intf) | |
1959 | { | |
4aa0d037 | 1960 | struct gspca_dev *gspca_dev = usb_get_intfdata(intf); |
63eb9546 JFM |
1961 | |
1962 | if (!gspca_dev) | |
1963 | return; | |
1964 | gspca_dev->present = 0; | |
e2997a72 HG |
1965 | mutex_lock(&gspca_dev->queue_lock); |
1966 | mutex_lock(&gspca_dev->usb_lock); | |
1967 | gspca_dev->streaming = 0; | |
d43fa32f | 1968 | destroy_urbs(gspca_dev); |
63eb9546 | 1969 | mutex_unlock(&gspca_dev->usb_lock); |
e2997a72 | 1970 | mutex_unlock(&gspca_dev->queue_lock); |
63eb9546 JFM |
1971 | while (gspca_dev->users != 0) { /* wait until fully closed */ |
1972 | atomic_inc(&gspca_dev->nevent); | |
1973 | wake_up_interruptible(&gspca_dev->wq); /* wake processes */ | |
1974 | schedule(); | |
1975 | } | |
1976 | /* We don't want people trying to open up the device */ | |
1977 | video_unregister_device(&gspca_dev->vdev); | |
1978 | /* Free the memory */ | |
1979 | kfree(gspca_dev); | |
1980 | PDEBUG(D_PROBE, "disconnect complete"); | |
1981 | } | |
1982 | EXPORT_SYMBOL(gspca_disconnect); | |
1983 | ||
1984 | /* -- module insert / remove -- */ | |
1985 | static int __init gspca_init(void) | |
1986 | { | |
1987 | info("main v%s registered", version); | |
1988 | return 0; | |
1989 | } | |
1990 | static void __exit gspca_exit(void) | |
1991 | { | |
1992 | info("main deregistered"); | |
1993 | } | |
1994 | ||
1995 | module_init(gspca_init); | |
1996 | module_exit(gspca_exit); | |
1997 | ||
6a7eba24 | 1998 | #ifdef VIDEO_ADV_DEBUG |
63eb9546 JFM |
1999 | module_param_named(debug, gspca_debug, int, 0644); |
2000 | MODULE_PARM_DESC(debug, | |
2001 | "Debug (bit) 0x01:error 0x02:probe 0x04:config" | |
d43fa32f JFM |
2002 | " 0x08:stream 0x10:frame 0x20:packet 0x40:USBin 0x80:USBout" |
2003 | " 0x0100: v4l2"); | |
6a7eba24 | 2004 | #endif |
63eb9546 JFM |
2005 | module_param(comp_fac, int, 0644); |
2006 | MODULE_PARM_DESC(comp_fac, | |
2007 | "Buffer size ratio when compressed in percent"); |