Commit | Line | Data |
---|---|---|
1e6dd65e MCC |
1 | /* |
2 | * Virtual Video driver - This code emulates a real video device with v4l2 api | |
3 | * | |
4 | * Copyright (c) 2006 by: | |
5 | * Mauro Carvalho Chehab <mchehab--a.t--infradead.org> | |
6 | * Ted Walther <ted--a.t--enumera.com> | |
7 | * John Sokol <sokol--a.t--videotechnology.com> | |
8 | * http://v4l.videotechnology.com/ | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the BSD Licence, GNU General Public License | |
12 | * as published by the Free Software Foundation; either version 2 of the | |
13 | * License, or (at your option) any later version | |
14 | */ | |
15 | #include <linux/module.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/errno.h> | |
18 | #include <linux/fs.h> | |
19 | #include <linux/kernel.h> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/mm.h> | |
22 | #include <linux/ioport.h> | |
23 | #include <linux/init.h> | |
24 | #include <linux/sched.h> | |
25 | #include <linux/pci.h> | |
26 | #include <linux/random.h> | |
27 | #include <linux/version.h> | |
51b54029 | 28 | #include <linux/mutex.h> |
1e6dd65e | 29 | #include <linux/videodev2.h> |
1095136d | 30 | #include <linux/dma-mapping.h> |
cd41e28e MCC |
31 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
32 | /* Include V4L1 specific functions. Should be removed soon */ | |
33 | #include <linux/videodev.h> | |
34 | #endif | |
f13df919 | 35 | #include <linux/interrupt.h> |
5a037706 | 36 | #include <media/videobuf-vmalloc.h> |
1e6dd65e MCC |
37 | #include <media/v4l2-common.h> |
38 | #include <linux/kthread.h> | |
39 | #include <linux/highmem.h> | |
7dfb7103 | 40 | #include <linux/freezer.h> |
1e6dd65e MCC |
41 | |
42 | /* Wake up at about 30 fps */ | |
43 | #define WAKE_NUMERATOR 30 | |
44 | #define WAKE_DENOMINATOR 1001 | |
45 | #define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */ | |
46 | ||
47 | /* These timers are for 1 fps - used only for testing */ | |
48 | //#define WAKE_DENOMINATOR 30 /* hack for testing purposes */ | |
49 | //#define BUFFER_TIMEOUT msecs_to_jiffies(5000) /* 5 seconds */ | |
50 | ||
51 | #include "font.h" | |
52 | ||
1e6dd65e MCC |
53 | #define VIVI_MAJOR_VERSION 0 |
54 | #define VIVI_MINOR_VERSION 4 | |
55 | #define VIVI_RELEASE 0 | |
56 | #define VIVI_VERSION KERNEL_VERSION(VIVI_MAJOR_VERSION, VIVI_MINOR_VERSION, VIVI_RELEASE) | |
57 | ||
c820cc45 MCC |
58 | /* Declare static vars that will be used as parameters */ |
59 | static unsigned int vid_limit = 16; /* Video memory limit, in Mb */ | |
60 | static struct video_device vivi; /* Video device */ | |
61 | static int video_nr = -1; /* /dev/videoN, -1 for autodetect */ | |
1e6dd65e MCC |
62 | |
63 | /* supported controls */ | |
64 | static struct v4l2_queryctrl vivi_qctrl[] = { | |
65 | { | |
66 | .id = V4L2_CID_AUDIO_VOLUME, | |
67 | .name = "Volume", | |
68 | .minimum = 0, | |
69 | .maximum = 65535, | |
70 | .step = 65535/100, | |
71 | .default_value = 65535, | |
72 | .flags = 0, | |
73 | .type = V4L2_CTRL_TYPE_INTEGER, | |
74 | },{ | |
75 | .id = V4L2_CID_BRIGHTNESS, | |
76 | .type = V4L2_CTRL_TYPE_INTEGER, | |
77 | .name = "Brightness", | |
78 | .minimum = 0, | |
79 | .maximum = 255, | |
80 | .step = 1, | |
81 | .default_value = 127, | |
82 | .flags = 0, | |
83 | }, { | |
84 | .id = V4L2_CID_CONTRAST, | |
85 | .type = V4L2_CTRL_TYPE_INTEGER, | |
86 | .name = "Contrast", | |
87 | .minimum = 0, | |
88 | .maximum = 255, | |
89 | .step = 0x1, | |
90 | .default_value = 0x10, | |
91 | .flags = 0, | |
92 | }, { | |
93 | .id = V4L2_CID_SATURATION, | |
94 | .type = V4L2_CTRL_TYPE_INTEGER, | |
95 | .name = "Saturation", | |
96 | .minimum = 0, | |
97 | .maximum = 255, | |
98 | .step = 0x1, | |
99 | .default_value = 127, | |
100 | .flags = 0, | |
101 | }, { | |
102 | .id = V4L2_CID_HUE, | |
103 | .type = V4L2_CTRL_TYPE_INTEGER, | |
104 | .name = "Hue", | |
105 | .minimum = -128, | |
106 | .maximum = 127, | |
107 | .step = 0x1, | |
108 | .default_value = 0, | |
109 | .flags = 0, | |
110 | } | |
111 | }; | |
112 | ||
113 | static int qctl_regs[ARRAY_SIZE(vivi_qctrl)]; | |
114 | ||
c820cc45 MCC |
115 | #define dprintk(level,fmt, arg...) \ |
116 | do { \ | |
117 | if (vivi.debug >= (level)) \ | |
118 | printk(KERN_DEBUG "vivi: " fmt , ## arg); \ | |
1e6dd65e MCC |
119 | } while (0) |
120 | ||
121 | /* ------------------------------------------------------------------ | |
122 | Basic structures | |
123 | ------------------------------------------------------------------*/ | |
124 | ||
125 | struct vivi_fmt { | |
126 | char *name; | |
127 | u32 fourcc; /* v4l2 format id */ | |
128 | int depth; | |
129 | }; | |
130 | ||
131 | static struct vivi_fmt format = { | |
132 | .name = "4:2:2, packed, YUYV", | |
133 | .fourcc = V4L2_PIX_FMT_YUYV, | |
134 | .depth = 16, | |
135 | }; | |
136 | ||
137 | struct sg_to_addr { | |
138 | int pos; | |
139 | struct scatterlist *sg; | |
140 | }; | |
141 | ||
142 | /* buffer for one video frame */ | |
143 | struct vivi_buffer { | |
144 | /* common v4l buffer stuff -- must be first */ | |
145 | struct videobuf_buffer vb; | |
146 | ||
147 | struct vivi_fmt *fmt; | |
1e6dd65e MCC |
148 | }; |
149 | ||
150 | struct vivi_dmaqueue { | |
151 | struct list_head active; | |
152 | struct list_head queued; | |
153 | struct timer_list timeout; | |
154 | ||
155 | /* thread for generating video stream*/ | |
156 | struct task_struct *kthread; | |
157 | wait_queue_head_t wq; | |
158 | /* Counters to control fps rate */ | |
159 | int frame; | |
160 | int ini_jiffies; | |
161 | }; | |
162 | ||
163 | static LIST_HEAD(vivi_devlist); | |
164 | ||
165 | struct vivi_dev { | |
166 | struct list_head vivi_devlist; | |
167 | ||
51b54029 | 168 | struct mutex lock; |
1e6dd65e MCC |
169 | |
170 | int users; | |
171 | ||
172 | /* various device info */ | |
f905c442 | 173 | struct video_device *vfd; |
1e6dd65e MCC |
174 | |
175 | struct vivi_dmaqueue vidq; | |
176 | ||
177 | /* Several counters */ | |
178 | int h,m,s,us,jiffies; | |
179 | char timestr[13]; | |
180 | }; | |
181 | ||
182 | struct vivi_fh { | |
183 | struct vivi_dev *dev; | |
184 | ||
185 | /* video capture */ | |
186 | struct vivi_fmt *fmt; | |
187 | unsigned int width,height; | |
188 | struct videobuf_queue vb_vidq; | |
189 | ||
190 | enum v4l2_buf_type type; | |
191 | }; | |
192 | ||
193 | /* ------------------------------------------------------------------ | |
194 | DMA and thread functions | |
195 | ------------------------------------------------------------------*/ | |
196 | ||
197 | /* Bars and Colors should match positions */ | |
198 | ||
199 | enum colors { | |
200 | WHITE, | |
201 | AMBAR, | |
202 | CYAN, | |
203 | GREEN, | |
204 | MAGENTA, | |
205 | RED, | |
206 | BLUE | |
207 | }; | |
208 | ||
209 | static u8 bars[8][3] = { | |
210 | /* R G B */ | |
211 | {204,204,204}, /* white */ | |
212 | {208,208, 0}, /* ambar */ | |
213 | { 0,206,206}, /* cyan */ | |
214 | { 0,239, 0}, /* green */ | |
215 | {239, 0,239}, /* magenta */ | |
216 | {205, 0, 0}, /* red */ | |
217 | { 0, 0,255}, /* blue */ | |
218 | { 0, 0, 0} | |
219 | }; | |
220 | ||
221 | #define TO_Y(r,g,b) (((16829*r +33039*g +6416*b + 32768)>>16)+16) | |
222 | /* RGB to V(Cr) Color transform */ | |
223 | #define TO_V(r,g,b) (((28784*r -24103*g -4681*b + 32768)>>16)+128) | |
224 | /* RGB to U(Cb) Color transform */ | |
225 | #define TO_U(r,g,b) (((-9714*r -19070*g +28784*b + 32768)>>16)+128) | |
226 | ||
227 | #define TSTAMP_MIN_Y 24 | |
228 | #define TSTAMP_MAX_Y TSTAMP_MIN_Y+15 | |
229 | #define TSTAMP_MIN_X 64 | |
230 | ||
b50e7fe9 | 231 | static void gen_line(char *basep,int inipos,int wmax, |
3bef5e4a | 232 | int hmax, int line, int count, char *timestr) |
1e6dd65e | 233 | { |
b50e7fe9 MCC |
234 | int w,i,j,pos=inipos,y; |
235 | char *p,*s; | |
1e6dd65e | 236 | u8 chr,r,g,b,color; |
1e6dd65e MCC |
237 | |
238 | /* We will just duplicate the second pixel at the packet */ | |
239 | wmax/=2; | |
240 | ||
241 | /* Generate a standard color bar pattern */ | |
242 | for (w=0;w<wmax;w++) { | |
3bef5e4a MCC |
243 | int colorpos=((w+count)*8/(wmax+1)) % 8; |
244 | r=bars[colorpos][0]; | |
245 | g=bars[colorpos][1]; | |
246 | b=bars[colorpos][2]; | |
1e6dd65e MCC |
247 | |
248 | for (color=0;color<4;color++) { | |
b50e7fe9 | 249 | p=basep+pos; |
1e6dd65e MCC |
250 | |
251 | switch (color) { | |
252 | case 0: | |
253 | case 2: | |
254 | *p=TO_Y(r,g,b); /* Luminance */ | |
255 | break; | |
256 | case 1: | |
257 | *p=TO_U(r,g,b); /* Cb */ | |
258 | break; | |
259 | case 3: | |
260 | *p=TO_V(r,g,b); /* Cr */ | |
261 | break; | |
262 | } | |
263 | pos++; | |
264 | } | |
265 | } | |
266 | ||
267 | /* Checks if it is possible to show timestamp */ | |
268 | if (TSTAMP_MAX_Y>=hmax) | |
269 | goto end; | |
270 | if (TSTAMP_MIN_X+strlen(timestr)>=wmax) | |
271 | goto end; | |
272 | ||
273 | /* Print stream time */ | |
274 | if (line>=TSTAMP_MIN_Y && line<=TSTAMP_MAX_Y) { | |
275 | j=TSTAMP_MIN_X; | |
276 | for (s=timestr;*s;s++) { | |
277 | chr=rom8x16_bits[(*s-0x30)*16+line-TSTAMP_MIN_Y]; | |
278 | for (i=0;i<7;i++) { | |
279 | if (chr&1<<(7-i)) { /* Font color*/ | |
280 | r=bars[BLUE][0]; | |
281 | g=bars[BLUE][1]; | |
282 | b=bars[BLUE][2]; | |
283 | r=g=b=0; | |
284 | g=198; | |
285 | } else { /* Background color */ | |
286 | r=bars[WHITE][0]; | |
287 | g=bars[WHITE][1]; | |
288 | b=bars[WHITE][2]; | |
289 | r=g=b=0; | |
290 | } | |
291 | ||
292 | pos=inipos+j*2; | |
293 | for (color=0;color<4;color++) { | |
b50e7fe9 | 294 | p=basep+pos; |
1e6dd65e MCC |
295 | |
296 | y=TO_Y(r,g,b); | |
297 | ||
298 | switch (color) { | |
299 | case 0: | |
300 | case 2: | |
301 | *p=TO_Y(r,g,b); /* Luminance */ | |
302 | break; | |
303 | case 1: | |
304 | *p=TO_U(r,g,b); /* Cb */ | |
305 | break; | |
306 | case 3: | |
307 | *p=TO_V(r,g,b); /* Cr */ | |
308 | break; | |
309 | } | |
310 | pos++; | |
311 | } | |
312 | j++; | |
313 | } | |
314 | } | |
315 | } | |
316 | ||
317 | ||
318 | end: | |
b50e7fe9 | 319 | return; |
1e6dd65e MCC |
320 | } |
321 | static void vivi_fillbuff(struct vivi_dev *dev,struct vivi_buffer *buf) | |
322 | { | |
323 | int h,pos=0; | |
324 | int hmax = buf->vb.height; | |
325 | int wmax = buf->vb.width; | |
1e6dd65e | 326 | struct timeval ts; |
5a037706 MCC |
327 | char *tmpbuf = kmalloc(wmax*2,GFP_KERNEL); |
328 | void *vbuf=videobuf_to_vmalloc (&buf->vb); | |
3bef5e4a MCC |
329 | /* FIXME: move to dev struct */ |
330 | static int mv_count=0; | |
b50e7fe9 | 331 | |
5a037706 MCC |
332 | if (!tmpbuf) |
333 | return; | |
1e6dd65e MCC |
334 | |
335 | for (h=0;h<hmax;h++) { | |
3bef5e4a MCC |
336 | gen_line(tmpbuf,0,wmax,hmax,h,mv_count, |
337 | dev->timestr); | |
5a037706 MCC |
338 | /* FIXME: replacing to __copy_to_user */ |
339 | if (copy_to_user(vbuf+pos,tmpbuf,wmax*2)!=0) | |
340 | dprintk(2,"vivifill copy_to_user failed.\n"); | |
1e6dd65e MCC |
341 | pos += wmax*2; |
342 | } | |
343 | ||
3bef5e4a MCC |
344 | mv_count++; |
345 | ||
5a037706 MCC |
346 | kfree(tmpbuf); |
347 | ||
1e6dd65e MCC |
348 | /* Updates stream time */ |
349 | ||
350 | dev->us+=jiffies_to_usecs(jiffies-dev->jiffies); | |
351 | dev->jiffies=jiffies; | |
352 | if (dev->us>=1000000) { | |
353 | dev->us-=1000000; | |
354 | dev->s++; | |
355 | if (dev->s>=60) { | |
356 | dev->s-=60; | |
357 | dev->m++; | |
358 | if (dev->m>60) { | |
359 | dev->m-=60; | |
360 | dev->h++; | |
361 | if (dev->h>24) | |
362 | dev->h-=24; | |
363 | } | |
364 | } | |
365 | } | |
366 | sprintf(dev->timestr,"%02d:%02d:%02d:%03d", | |
367 | dev->h,dev->m,dev->s,(dev->us+500)/1000); | |
368 | ||
369 | dprintk(2,"vivifill at %s: Buffer 0x%08lx size= %d\n",dev->timestr, | |
5a037706 | 370 | (unsigned long)tmpbuf,pos); |
1e6dd65e MCC |
371 | |
372 | /* Advice that buffer was filled */ | |
0fc0686e | 373 | buf->vb.state = VIDEOBUF_DONE; |
1e6dd65e MCC |
374 | buf->vb.field_count++; |
375 | do_gettimeofday(&ts); | |
376 | buf->vb.ts = ts; | |
377 | ||
378 | list_del(&buf->vb.queue); | |
379 | wake_up(&buf->vb.done); | |
380 | } | |
381 | ||
382 | static int restart_video_queue(struct vivi_dmaqueue *dma_q); | |
383 | ||
384 | static void vivi_thread_tick(struct vivi_dmaqueue *dma_q) | |
385 | { | |
386 | struct vivi_buffer *buf; | |
387 | struct vivi_dev *dev= container_of(dma_q,struct vivi_dev,vidq); | |
388 | ||
389 | int bc; | |
390 | ||
391 | /* Announces videobuf that all went ok */ | |
392 | for (bc = 0;; bc++) { | |
393 | if (list_empty(&dma_q->active)) { | |
394 | dprintk(1,"No active queue to serve\n"); | |
395 | break; | |
396 | } | |
397 | ||
398 | buf = list_entry(dma_q->active.next, | |
399 | struct vivi_buffer, vb.queue); | |
400 | ||
401 | /* Nobody is waiting something to be done, just return */ | |
402 | if (!waitqueue_active(&buf->vb.done)) { | |
403 | mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); | |
404 | return; | |
405 | } | |
406 | ||
407 | do_gettimeofday(&buf->vb.ts); | |
408 | dprintk(2,"[%p/%d] wakeup\n",buf,buf->vb.i); | |
409 | ||
410 | /* Fill buffer */ | |
411 | vivi_fillbuff(dev,buf); | |
0b600512 MCC |
412 | |
413 | if (list_empty(&dma_q->active)) { | |
414 | del_timer(&dma_q->timeout); | |
415 | } else { | |
416 | mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); | |
417 | } | |
1e6dd65e MCC |
418 | } |
419 | if (bc != 1) | |
420 | dprintk(1,"%s: %d buffers handled (should be 1)\n",__FUNCTION__,bc); | |
421 | } | |
422 | ||
972c3517 | 423 | static void vivi_sleep(struct vivi_dmaqueue *dma_q) |
1e6dd65e MCC |
424 | { |
425 | int timeout; | |
426 | DECLARE_WAITQUEUE(wait, current); | |
427 | ||
428 | dprintk(1,"%s dma_q=0x%08lx\n",__FUNCTION__,(unsigned long)dma_q); | |
429 | ||
430 | add_wait_queue(&dma_q->wq, &wait); | |
431 | if (!kthread_should_stop()) { | |
432 | dma_q->frame++; | |
433 | ||
434 | /* Calculate time to wake up */ | |
435 | timeout=dma_q->ini_jiffies+msecs_to_jiffies((dma_q->frame*WAKE_NUMERATOR*1000)/WAKE_DENOMINATOR)-jiffies; | |
436 | ||
437 | if (timeout <= 0) { | |
438 | int old=dma_q->frame; | |
439 | dma_q->frame=(jiffies_to_msecs(jiffies-dma_q->ini_jiffies)*WAKE_DENOMINATOR)/(WAKE_NUMERATOR*1000)+1; | |
440 | ||
441 | timeout=dma_q->ini_jiffies+msecs_to_jiffies((dma_q->frame*WAKE_NUMERATOR*1000)/WAKE_DENOMINATOR)-jiffies; | |
442 | ||
443 | dprintk(1,"underrun, losed %d frames. " | |
444 | "Now, frame is %d. Waking on %d jiffies\n", | |
445 | dma_q->frame-old,dma_q->frame,timeout); | |
446 | } else | |
447 | dprintk(1,"will sleep for %i jiffies\n",timeout); | |
448 | ||
449 | vivi_thread_tick(dma_q); | |
450 | ||
451 | schedule_timeout_interruptible (timeout); | |
452 | } | |
453 | ||
454 | remove_wait_queue(&dma_q->wq, &wait); | |
455 | try_to_freeze(); | |
456 | } | |
457 | ||
972c3517 | 458 | static int vivi_thread(void *data) |
1e6dd65e MCC |
459 | { |
460 | struct vivi_dmaqueue *dma_q=data; | |
461 | ||
462 | dprintk(1,"thread started\n"); | |
463 | ||
0b600512 | 464 | mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); |
83144186 | 465 | set_freezable(); |
0b600512 | 466 | |
1e6dd65e MCC |
467 | for (;;) { |
468 | vivi_sleep(dma_q); | |
469 | ||
470 | if (kthread_should_stop()) | |
471 | break; | |
472 | } | |
473 | dprintk(1, "thread: exit\n"); | |
474 | return 0; | |
475 | } | |
476 | ||
972c3517 | 477 | static int vivi_start_thread(struct vivi_dmaqueue *dma_q) |
1e6dd65e MCC |
478 | { |
479 | dma_q->frame=0; | |
480 | dma_q->ini_jiffies=jiffies; | |
481 | ||
482 | dprintk(1,"%s\n",__FUNCTION__); | |
1e6dd65e MCC |
483 | |
484 | dma_q->kthread = kthread_run(vivi_thread, dma_q, "vivi"); | |
485 | ||
054afee4 | 486 | if (IS_ERR(dma_q->kthread)) { |
1e6dd65e | 487 | printk(KERN_ERR "vivi: kernel_thread() failed\n"); |
054afee4 | 488 | return PTR_ERR(dma_q->kthread); |
1e6dd65e | 489 | } |
0b600512 MCC |
490 | /* Wakes thread */ |
491 | wake_up_interruptible(&dma_q->wq); | |
492 | ||
1e6dd65e MCC |
493 | dprintk(1,"returning from %s\n",__FUNCTION__); |
494 | return 0; | |
495 | } | |
496 | ||
972c3517 | 497 | static void vivi_stop_thread(struct vivi_dmaqueue *dma_q) |
1e6dd65e MCC |
498 | { |
499 | dprintk(1,"%s\n",__FUNCTION__); | |
500 | /* shutdown control thread */ | |
501 | if (dma_q->kthread) { | |
502 | kthread_stop(dma_q->kthread); | |
503 | dma_q->kthread=NULL; | |
504 | } | |
505 | } | |
506 | ||
507 | static int restart_video_queue(struct vivi_dmaqueue *dma_q) | |
508 | { | |
509 | struct vivi_buffer *buf, *prev; | |
1e6dd65e MCC |
510 | |
511 | dprintk(1,"%s dma_q=0x%08lx\n",__FUNCTION__,(unsigned long)dma_q); | |
512 | ||
513 | if (!list_empty(&dma_q->active)) { | |
514 | buf = list_entry(dma_q->active.next, struct vivi_buffer, vb.queue); | |
515 | dprintk(2,"restart_queue [%p/%d]: restart dma\n", | |
516 | buf, buf->vb.i); | |
517 | ||
518 | dprintk(1,"Restarting video dma\n"); | |
519 | vivi_stop_thread(dma_q); | |
520 | // vivi_start_thread(dma_q); | |
521 | ||
522 | /* cancel all outstanding capture / vbi requests */ | |
a991f44b | 523 | list_for_each_entry_safe(buf, prev, &dma_q->active, vb.queue) { |
1e6dd65e | 524 | list_del(&buf->vb.queue); |
0fc0686e | 525 | buf->vb.state = VIDEOBUF_ERROR; |
1e6dd65e MCC |
526 | wake_up(&buf->vb.done); |
527 | } | |
528 | mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); | |
529 | ||
530 | return 0; | |
531 | } | |
532 | ||
533 | prev = NULL; | |
534 | for (;;) { | |
535 | if (list_empty(&dma_q->queued)) | |
536 | return 0; | |
537 | buf = list_entry(dma_q->queued.next, struct vivi_buffer, vb.queue); | |
538 | if (NULL == prev) { | |
539 | list_del(&buf->vb.queue); | |
540 | list_add_tail(&buf->vb.queue,&dma_q->active); | |
541 | ||
542 | dprintk(1,"Restarting video dma\n"); | |
543 | vivi_stop_thread(dma_q); | |
544 | vivi_start_thread(dma_q); | |
545 | ||
0fc0686e | 546 | buf->vb.state = VIDEOBUF_ACTIVE; |
1e6dd65e MCC |
547 | mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); |
548 | dprintk(2,"[%p/%d] restart_queue - first active\n", | |
549 | buf,buf->vb.i); | |
550 | ||
551 | } else if (prev->vb.width == buf->vb.width && | |
552 | prev->vb.height == buf->vb.height && | |
553 | prev->fmt == buf->fmt) { | |
554 | list_del(&buf->vb.queue); | |
555 | list_add_tail(&buf->vb.queue,&dma_q->active); | |
0fc0686e | 556 | buf->vb.state = VIDEOBUF_ACTIVE; |
1e6dd65e MCC |
557 | dprintk(2,"[%p/%d] restart_queue - move to active\n", |
558 | buf,buf->vb.i); | |
559 | } else { | |
560 | return 0; | |
561 | } | |
562 | prev = buf; | |
563 | } | |
564 | } | |
565 | ||
566 | static void vivi_vid_timeout(unsigned long data) | |
567 | { | |
568 | struct vivi_dev *dev = (struct vivi_dev*)data; | |
569 | struct vivi_dmaqueue *vidq = &dev->vidq; | |
570 | struct vivi_buffer *buf; | |
571 | ||
572 | while (!list_empty(&vidq->active)) { | |
573 | buf = list_entry(vidq->active.next, struct vivi_buffer, vb.queue); | |
574 | list_del(&buf->vb.queue); | |
0fc0686e | 575 | buf->vb.state = VIDEOBUF_ERROR; |
1e6dd65e MCC |
576 | wake_up(&buf->vb.done); |
577 | printk("vivi/0: [%p/%d] timeout\n", buf, buf->vb.i); | |
578 | } | |
579 | ||
580 | restart_video_queue(vidq); | |
581 | } | |
582 | ||
583 | /* ------------------------------------------------------------------ | |
584 | Videobuf operations | |
585 | ------------------------------------------------------------------*/ | |
586 | static int | |
587 | buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) | |
588 | { | |
589 | struct vivi_fh *fh = vq->priv_data; | |
590 | ||
591 | *size = fh->width*fh->height*2; | |
592 | ||
593 | if (0 == *count) | |
594 | *count = 32; | |
6bb2790f | 595 | |
1e6dd65e MCC |
596 | while (*size * *count > vid_limit * 1024 * 1024) |
597 | (*count)--; | |
6bb2790f MCC |
598 | |
599 | dprintk(1,"%s, count=%d, size=%d\n",__FUNCTION__,*count, *size); | |
600 | ||
1e6dd65e MCC |
601 | return 0; |
602 | } | |
603 | ||
972c3517 | 604 | static void free_buffer(struct videobuf_queue *vq, struct vivi_buffer *buf) |
1e6dd65e MCC |
605 | { |
606 | dprintk(1,"%s\n",__FUNCTION__); | |
607 | ||
608 | if (in_interrupt()) | |
609 | BUG(); | |
610 | ||
1e6dd65e | 611 | videobuf_waiton(&buf->vb,0,0); |
5a037706 | 612 | videobuf_vmalloc_free(&buf->vb); |
0fc0686e | 613 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
1e6dd65e MCC |
614 | } |
615 | ||
616 | #define norm_maxw() 1024 | |
617 | #define norm_maxh() 768 | |
618 | static int | |
619 | buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, | |
620 | enum v4l2_field field) | |
621 | { | |
622 | struct vivi_fh *fh = vq->priv_data; | |
623 | struct vivi_buffer *buf = container_of(vb,struct vivi_buffer,vb); | |
624 | int rc, init_buffer = 0; | |
625 | ||
6bb2790f | 626 | dprintk(1,"%s, field=%d\n",__FUNCTION__,field); |
1e6dd65e MCC |
627 | |
628 | BUG_ON(NULL == fh->fmt); | |
629 | if (fh->width < 48 || fh->width > norm_maxw() || | |
630 | fh->height < 32 || fh->height > norm_maxh()) | |
631 | return -EINVAL; | |
632 | buf->vb.size = fh->width*fh->height*2; | |
633 | if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) | |
634 | return -EINVAL; | |
635 | ||
636 | if (buf->fmt != fh->fmt || | |
637 | buf->vb.width != fh->width || | |
638 | buf->vb.height != fh->height || | |
639 | buf->vb.field != field) { | |
640 | buf->fmt = fh->fmt; | |
641 | buf->vb.width = fh->width; | |
642 | buf->vb.height = fh->height; | |
643 | buf->vb.field = field; | |
644 | init_buffer = 1; | |
645 | } | |
646 | ||
0fc0686e | 647 | if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { |
1e6dd65e MCC |
648 | if (0 != (rc = videobuf_iolock(vq,&buf->vb,NULL))) |
649 | goto fail; | |
650 | } | |
651 | ||
0fc0686e | 652 | buf->vb.state = VIDEOBUF_PREPARED; |
1e6dd65e | 653 | |
1e6dd65e MCC |
654 | return 0; |
655 | ||
656 | fail: | |
657 | free_buffer(vq,buf); | |
658 | return rc; | |
659 | } | |
660 | ||
661 | static void | |
662 | buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) | |
663 | { | |
664 | struct vivi_buffer *buf = container_of(vb,struct vivi_buffer,vb); | |
665 | struct vivi_fh *fh = vq->priv_data; | |
666 | struct vivi_dev *dev = fh->dev; | |
667 | struct vivi_dmaqueue *vidq = &dev->vidq; | |
668 | struct vivi_buffer *prev; | |
669 | ||
670 | if (!list_empty(&vidq->queued)) { | |
671 | dprintk(1,"adding vb queue=0x%08lx\n",(unsigned long)&buf->vb.queue); | |
672 | list_add_tail(&buf->vb.queue,&vidq->queued); | |
0fc0686e | 673 | buf->vb.state = VIDEOBUF_QUEUED; |
1e6dd65e MCC |
674 | dprintk(2,"[%p/%d] buffer_queue - append to queued\n", |
675 | buf, buf->vb.i); | |
676 | } else if (list_empty(&vidq->active)) { | |
677 | list_add_tail(&buf->vb.queue,&vidq->active); | |
678 | ||
0fc0686e | 679 | buf->vb.state = VIDEOBUF_ACTIVE; |
1e6dd65e MCC |
680 | mod_timer(&vidq->timeout, jiffies+BUFFER_TIMEOUT); |
681 | dprintk(2,"[%p/%d] buffer_queue - first active\n", | |
682 | buf, buf->vb.i); | |
683 | ||
684 | vivi_start_thread(vidq); | |
685 | } else { | |
686 | prev = list_entry(vidq->active.prev, struct vivi_buffer, vb.queue); | |
687 | if (prev->vb.width == buf->vb.width && | |
688 | prev->vb.height == buf->vb.height && | |
689 | prev->fmt == buf->fmt) { | |
690 | list_add_tail(&buf->vb.queue,&vidq->active); | |
0fc0686e | 691 | buf->vb.state = VIDEOBUF_ACTIVE; |
1e6dd65e MCC |
692 | dprintk(2,"[%p/%d] buffer_queue - append to active\n", |
693 | buf, buf->vb.i); | |
694 | ||
695 | } else { | |
696 | list_add_tail(&buf->vb.queue,&vidq->queued); | |
0fc0686e | 697 | buf->vb.state = VIDEOBUF_QUEUED; |
1e6dd65e MCC |
698 | dprintk(2,"[%p/%d] buffer_queue - first queued\n", |
699 | buf, buf->vb.i); | |
700 | } | |
701 | } | |
702 | } | |
703 | ||
704 | static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb) | |
705 | { | |
706 | struct vivi_buffer *buf = container_of(vb,struct vivi_buffer,vb); | |
707 | struct vivi_fh *fh = vq->priv_data; | |
708 | struct vivi_dev *dev = (struct vivi_dev*)fh->dev; | |
709 | struct vivi_dmaqueue *vidq = &dev->vidq; | |
710 | ||
711 | dprintk(1,"%s\n",__FUNCTION__); | |
712 | ||
713 | vivi_stop_thread(vidq); | |
714 | ||
715 | free_buffer(vq,buf); | |
716 | } | |
717 | ||
1e6dd65e MCC |
718 | static struct videobuf_queue_ops vivi_video_qops = { |
719 | .buf_setup = buffer_setup, | |
720 | .buf_prepare = buffer_prepare, | |
721 | .buf_queue = buffer_queue, | |
722 | .buf_release = buffer_release, | |
1e6dd65e MCC |
723 | }; |
724 | ||
c820cc45 MCC |
725 | /* ------------------------------------------------------------------ |
726 | IOCTL vidioc handling | |
727 | ------------------------------------------------------------------*/ | |
728 | static int vidioc_querycap (struct file *file, void *priv, | |
729 | struct v4l2_capability *cap) | |
730 | { | |
731 | strcpy(cap->driver, "vivi"); | |
732 | strcpy(cap->card, "vivi"); | |
733 | cap->version = VIVI_VERSION; | |
734 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | | |
735 | V4L2_CAP_STREAMING | | |
736 | V4L2_CAP_READWRITE; | |
737 | return 0; | |
738 | } | |
739 | ||
740 | static int vidioc_enum_fmt_cap (struct file *file, void *priv, | |
741 | struct v4l2_fmtdesc *f) | |
742 | { | |
743 | if (f->index > 0) | |
744 | return -EINVAL; | |
745 | ||
746 | strlcpy(f->description,format.name,sizeof(f->description)); | |
747 | f->pixelformat = format.fourcc; | |
748 | return 0; | |
749 | } | |
750 | ||
751 | static int vidioc_g_fmt_cap (struct file *file, void *priv, | |
752 | struct v4l2_format *f) | |
753 | { | |
754 | struct vivi_fh *fh=priv; | |
755 | ||
756 | f->fmt.pix.width = fh->width; | |
757 | f->fmt.pix.height = fh->height; | |
758 | f->fmt.pix.field = fh->vb_vidq.field; | |
759 | f->fmt.pix.pixelformat = fh->fmt->fourcc; | |
760 | f->fmt.pix.bytesperline = | |
761 | (f->fmt.pix.width * fh->fmt->depth) >> 3; | |
762 | f->fmt.pix.sizeimage = | |
763 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
764 | ||
765 | return (0); | |
766 | } | |
767 | ||
768 | static int vidioc_try_fmt_cap (struct file *file, void *priv, | |
1e6dd65e MCC |
769 | struct v4l2_format *f) |
770 | { | |
771 | struct vivi_fmt *fmt; | |
772 | enum v4l2_field field; | |
773 | unsigned int maxw, maxh; | |
774 | ||
775 | if (format.fourcc != f->fmt.pix.pixelformat) { | |
c820cc45 MCC |
776 | dprintk(1,"Fourcc format (0x%08x) invalid. Driver accepts " |
777 | "only 0x%08x\n",f->fmt.pix.pixelformat,format.fourcc); | |
1e6dd65e MCC |
778 | return -EINVAL; |
779 | } | |
780 | fmt=&format; | |
781 | ||
782 | field = f->fmt.pix.field; | |
783 | ||
784 | if (field == V4L2_FIELD_ANY) { | |
a326ae11 | 785 | field=V4L2_FIELD_INTERLACED; |
1e6dd65e MCC |
786 | } else if (V4L2_FIELD_INTERLACED != field) { |
787 | dprintk(1,"Field type invalid.\n"); | |
788 | return -EINVAL; | |
789 | } | |
790 | ||
791 | maxw = norm_maxw(); | |
792 | maxh = norm_maxh(); | |
793 | ||
794 | f->fmt.pix.field = field; | |
795 | if (f->fmt.pix.height < 32) | |
796 | f->fmt.pix.height = 32; | |
797 | if (f->fmt.pix.height > maxh) | |
798 | f->fmt.pix.height = maxh; | |
799 | if (f->fmt.pix.width < 48) | |
800 | f->fmt.pix.width = 48; | |
801 | if (f->fmt.pix.width > maxw) | |
802 | f->fmt.pix.width = maxw; | |
803 | f->fmt.pix.width &= ~0x03; | |
804 | f->fmt.pix.bytesperline = | |
805 | (f->fmt.pix.width * fmt->depth) >> 3; | |
806 | f->fmt.pix.sizeimage = | |
807 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
808 | ||
809 | return 0; | |
810 | } | |
811 | ||
c820cc45 MCC |
812 | /*FIXME: This seems to be generic enough to be at videodev2 */ |
813 | static int vidioc_s_fmt_cap (struct file *file, void *priv, | |
814 | struct v4l2_format *f) | |
1e6dd65e | 815 | { |
c820cc45 MCC |
816 | struct vivi_fh *fh=priv; |
817 | int ret = vidioc_try_fmt_cap(file,fh,f); | |
818 | if (ret < 0) | |
819 | return (ret); | |
820 | ||
821 | fh->fmt = &format; | |
822 | fh->width = f->fmt.pix.width; | |
823 | fh->height = f->fmt.pix.height; | |
824 | fh->vb_vidq.field = f->fmt.pix.field; | |
825 | fh->type = f->type; | |
826 | ||
827 | return (0); | |
1e6dd65e MCC |
828 | } |
829 | ||
c820cc45 | 830 | static int vidioc_reqbufs (struct file *file, void *priv, struct v4l2_requestbuffers *p) |
1e6dd65e | 831 | { |
c820cc45 | 832 | struct vivi_fh *fh=priv; |
1e6dd65e | 833 | |
c820cc45 | 834 | return (videobuf_reqbufs(&fh->vb_vidq, p)); |
1e6dd65e MCC |
835 | } |
836 | ||
c820cc45 | 837 | static int vidioc_querybuf (struct file *file, void *priv, struct v4l2_buffer *p) |
1e6dd65e | 838 | { |
c820cc45 | 839 | struct vivi_fh *fh=priv; |
1e6dd65e | 840 | |
c820cc45 MCC |
841 | return (videobuf_querybuf(&fh->vb_vidq, p)); |
842 | } | |
1e6dd65e | 843 | |
c820cc45 MCC |
844 | static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *p) |
845 | { | |
846 | struct vivi_fh *fh=priv; | |
1e6dd65e | 847 | |
c820cc45 MCC |
848 | return (videobuf_qbuf(&fh->vb_vidq, p)); |
849 | } | |
1e6dd65e | 850 | |
c820cc45 MCC |
851 | static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *p) |
852 | { | |
853 | struct vivi_fh *fh=priv; | |
1e6dd65e | 854 | |
c820cc45 MCC |
855 | return (videobuf_dqbuf(&fh->vb_vidq, p, |
856 | file->f_flags & O_NONBLOCK)); | |
857 | } | |
1e6dd65e | 858 | |
0dfa9abd | 859 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
c820cc45 MCC |
860 | static int vidiocgmbuf (struct file *file, void *priv, struct video_mbuf *mbuf) |
861 | { | |
862 | struct vivi_fh *fh=priv; | |
4ceb04e1 | 863 | |
6bb2790f | 864 | return videobuf_cgmbuf (&fh->vb_vidq, mbuf, 8); |
c820cc45 MCC |
865 | } |
866 | #endif | |
1e6dd65e | 867 | |
dc46ace1 | 868 | static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) |
c820cc45 MCC |
869 | { |
870 | struct vivi_fh *fh=priv; | |
1e6dd65e | 871 | |
c820cc45 MCC |
872 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
873 | return -EINVAL; | |
874 | if (i != fh->type) | |
875 | return -EINVAL; | |
1e6dd65e | 876 | |
ba32bd95 | 877 | return videobuf_streamon(&fh->vb_vidq); |
c820cc45 | 878 | } |
1e6dd65e | 879 | |
dc46ace1 | 880 | static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) |
c820cc45 MCC |
881 | { |
882 | struct vivi_fh *fh=priv; | |
1e6dd65e | 883 | |
c820cc45 MCC |
884 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
885 | return -EINVAL; | |
886 | if (i != fh->type) | |
887 | return -EINVAL; | |
1e6dd65e | 888 | |
ba32bd95 | 889 | return videobuf_streamoff(&fh->vb_vidq); |
c820cc45 MCC |
890 | } |
891 | ||
e75f9cee | 892 | static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *i) |
c820cc45 | 893 | { |
c820cc45 MCC |
894 | return 0; |
895 | } | |
1e6dd65e | 896 | |
c820cc45 MCC |
897 | /* only one input in this sample driver */ |
898 | static int vidioc_enum_input (struct file *file, void *priv, | |
899 | struct v4l2_input *inp) | |
900 | { | |
901 | if (inp->index != 0) | |
902 | return -EINVAL; | |
1e6dd65e | 903 | |
c820cc45 MCC |
904 | inp->type = V4L2_INPUT_TYPE_CAMERA; |
905 | inp->std = V4L2_STD_NTSC_M; | |
906 | strcpy(inp->name,"Camera"); | |
1e6dd65e | 907 | |
c820cc45 MCC |
908 | return (0); |
909 | } | |
1e6dd65e | 910 | |
c820cc45 MCC |
911 | static int vidioc_g_input (struct file *file, void *priv, unsigned int *i) |
912 | { | |
913 | *i = 0; | |
1e6dd65e | 914 | |
c820cc45 MCC |
915 | return (0); |
916 | } | |
917 | static int vidioc_s_input (struct file *file, void *priv, unsigned int i) | |
918 | { | |
919 | if (i > 0) | |
920 | return -EINVAL; | |
1e6dd65e | 921 | |
c820cc45 MCC |
922 | return (0); |
923 | } | |
1e6dd65e MCC |
924 | |
925 | /* --- controls ---------------------------------------------- */ | |
c820cc45 MCC |
926 | static int vidioc_queryctrl (struct file *file, void *priv, |
927 | struct v4l2_queryctrl *qc) | |
928 | { | |
929 | int i; | |
1e6dd65e | 930 | |
c820cc45 MCC |
931 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
932 | if (qc->id && qc->id == vivi_qctrl[i].id) { | |
933 | memcpy(qc, &(vivi_qctrl[i]), | |
934 | sizeof(*qc)); | |
935 | return (0); | |
936 | } | |
1e6dd65e | 937 | |
c820cc45 MCC |
938 | return -EINVAL; |
939 | } | |
1e6dd65e | 940 | |
c820cc45 MCC |
941 | static int vidioc_g_ctrl (struct file *file, void *priv, |
942 | struct v4l2_control *ctrl) | |
943 | { | |
944 | int i; | |
1e6dd65e | 945 | |
c820cc45 MCC |
946 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
947 | if (ctrl->id == vivi_qctrl[i].id) { | |
948 | ctrl->value=qctl_regs[i]; | |
949 | return (0); | |
950 | } | |
1e6dd65e | 951 | |
c820cc45 | 952 | return -EINVAL; |
1e6dd65e | 953 | } |
c820cc45 MCC |
954 | static int vidioc_s_ctrl (struct file *file, void *priv, |
955 | struct v4l2_control *ctrl) | |
1e6dd65e | 956 | { |
c820cc45 MCC |
957 | int i; |
958 | ||
959 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
960 | if (ctrl->id == vivi_qctrl[i].id) { | |
961 | if (ctrl->value < | |
962 | vivi_qctrl[i].minimum | |
963 | || ctrl->value > | |
964 | vivi_qctrl[i].maximum) { | |
965 | return (-ERANGE); | |
966 | } | |
967 | qctl_regs[i]=ctrl->value; | |
968 | return (0); | |
969 | } | |
970 | return -EINVAL; | |
1e6dd65e MCC |
971 | } |
972 | ||
973 | /* ------------------------------------------------------------------ | |
974 | File operations for the device | |
975 | ------------------------------------------------------------------*/ | |
976 | ||
977 | #define line_buf_size(norm) (norm_maxw(norm)*(format.depth+7)/8) | |
978 | ||
979 | static int vivi_open(struct inode *inode, struct file *file) | |
980 | { | |
981 | int minor = iminor(inode); | |
a991f44b | 982 | struct vivi_dev *dev; |
1e6dd65e | 983 | struct vivi_fh *fh; |
1e6dd65e MCC |
984 | int i; |
985 | ||
986 | printk(KERN_DEBUG "vivi: open called (minor=%d)\n",minor); | |
987 | ||
a991f44b | 988 | list_for_each_entry(dev, &vivi_devlist, vivi_devlist) |
f905c442 | 989 | if (dev->vfd->minor == minor) |
a991f44b TP |
990 | goto found; |
991 | return -ENODEV; | |
992 | found: | |
1e6dd65e MCC |
993 | |
994 | ||
c820cc45 | 995 | |
1e6dd65e MCC |
996 | /* If more than one user, mutex should be added */ |
997 | dev->users++; | |
998 | ||
a991f44b TP |
999 | dprintk(1, "open minor=%d type=%s users=%d\n", minor, |
1000 | v4l2_type_names[V4L2_BUF_TYPE_VIDEO_CAPTURE], dev->users); | |
1e6dd65e MCC |
1001 | |
1002 | /* allocate + initialize per filehandle data */ | |
1003 | fh = kzalloc(sizeof(*fh),GFP_KERNEL); | |
1004 | if (NULL == fh) { | |
1005 | dev->users--; | |
1006 | return -ENOMEM; | |
1007 | } | |
1008 | ||
1009 | file->private_data = fh; | |
1010 | fh->dev = dev; | |
c820cc45 | 1011 | |
1e6dd65e MCC |
1012 | fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
1013 | fh->fmt = &format; | |
1014 | fh->width = 640; | |
1015 | fh->height = 480; | |
1016 | ||
1017 | /* Put all controls at a sane state */ | |
1018 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
1019 | qctl_regs[i] =vivi_qctrl[i].default_value; | |
1020 | ||
1021 | dprintk(1,"Open: fh=0x%08lx, dev=0x%08lx, dev->vidq=0x%08lx\n", | |
1022 | (unsigned long)fh,(unsigned long)dev,(unsigned long)&dev->vidq); | |
1023 | dprintk(1,"Open: list_empty queued=%d\n",list_empty(&dev->vidq.queued)); | |
1024 | dprintk(1,"Open: list_empty active=%d\n",list_empty(&dev->vidq.active)); | |
1025 | ||
1026 | /* Resets frame counters */ | |
1027 | dev->h=0; | |
1028 | dev->m=0; | |
1029 | dev->s=0; | |
1030 | dev->us=0; | |
1031 | dev->jiffies=jiffies; | |
1032 | sprintf(dev->timestr,"%02d:%02d:%02d:%03d", | |
1033 | dev->h,dev->m,dev->s,(dev->us+500)/1000); | |
1034 | ||
5a037706 | 1035 | videobuf_queue_vmalloc_init(&fh->vb_vidq, &vivi_video_qops, |
1e6dd65e MCC |
1036 | NULL, NULL, |
1037 | fh->type, | |
1038 | V4L2_FIELD_INTERLACED, | |
1039 | sizeof(struct vivi_buffer),fh); | |
1040 | ||
1041 | return 0; | |
1042 | } | |
1043 | ||
1044 | static ssize_t | |
1045 | vivi_read(struct file *file, char __user *data, size_t count, loff_t *ppos) | |
1046 | { | |
c820cc45 | 1047 | struct vivi_fh *fh = file->private_data; |
1e6dd65e MCC |
1048 | |
1049 | if (fh->type==V4L2_BUF_TYPE_VIDEO_CAPTURE) { | |
acb09af4 | 1050 | return videobuf_read_stream(&fh->vb_vidq, data, count, ppos, 0, |
1e6dd65e MCC |
1051 | file->f_flags & O_NONBLOCK); |
1052 | } | |
1053 | return 0; | |
1054 | } | |
1055 | ||
1056 | static unsigned int | |
1057 | vivi_poll(struct file *file, struct poll_table_struct *wait) | |
1058 | { | |
c820cc45 | 1059 | struct vivi_fh *fh = file->private_data; |
85c7c70b | 1060 | struct videobuf_queue *q = &fh->vb_vidq; |
1e6dd65e MCC |
1061 | |
1062 | dprintk(1,"%s\n",__FUNCTION__); | |
1063 | ||
1064 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) | |
1065 | return POLLERR; | |
1066 | ||
85c7c70b | 1067 | return videobuf_poll_stream(file, q, wait); |
1e6dd65e MCC |
1068 | } |
1069 | ||
f905c442 | 1070 | static int vivi_close(struct inode *inode, struct file *file) |
1e6dd65e | 1071 | { |
c820cc45 MCC |
1072 | struct vivi_fh *fh = file->private_data; |
1073 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
1074 | struct vivi_dmaqueue *vidq = &dev->vidq; |
1075 | ||
1076 | int minor = iminor(inode); | |
1077 | ||
1078 | vivi_stop_thread(vidq); | |
053fcb60 | 1079 | videobuf_stop(&fh->vb_vidq); |
1e6dd65e MCC |
1080 | videobuf_mmap_free(&fh->vb_vidq); |
1081 | ||
1082 | kfree (fh); | |
1083 | ||
1084 | dev->users--; | |
1085 | ||
1086 | printk(KERN_DEBUG "vivi: close called (minor=%d, users=%d)\n",minor,dev->users); | |
1087 | ||
1088 | return 0; | |
1089 | } | |
1090 | ||
f905c442 MCC |
1091 | static int vivi_release(struct vivi_dev *dev) |
1092 | { | |
1093 | if (-1 != dev->vfd->minor) | |
1094 | video_unregister_device(dev->vfd); | |
1095 | else | |
1096 | video_device_release(dev->vfd); | |
1097 | ||
1098 | dev->vfd = NULL; | |
1099 | ||
1100 | return 0; | |
1101 | } | |
1102 | ||
1e6dd65e MCC |
1103 | static int |
1104 | vivi_mmap(struct file *file, struct vm_area_struct * vma) | |
1105 | { | |
c820cc45 | 1106 | struct vivi_fh *fh = file->private_data; |
1e6dd65e MCC |
1107 | int ret; |
1108 | ||
1109 | dprintk (1,"mmap called, vma=0x%08lx\n",(unsigned long)vma); | |
1110 | ||
1111 | ret=videobuf_mmap_mapper(&fh->vb_vidq, vma); | |
1112 | ||
1113 | dprintk (1,"vma start=0x%08lx, size=%ld, ret=%d\n", | |
1114 | (unsigned long)vma->vm_start, | |
1115 | (unsigned long)vma->vm_end-(unsigned long)vma->vm_start, | |
1116 | ret); | |
1117 | ||
1118 | return ret; | |
1119 | } | |
1120 | ||
fa027c2a | 1121 | static const struct file_operations vivi_fops = { |
1e6dd65e MCC |
1122 | .owner = THIS_MODULE, |
1123 | .open = vivi_open, | |
f905c442 | 1124 | .release = vivi_close, |
1e6dd65e MCC |
1125 | .read = vivi_read, |
1126 | .poll = vivi_poll, | |
c820cc45 | 1127 | .ioctl = video_ioctl2, /* V4L2 ioctl handler */ |
5a037706 | 1128 | .mmap = vivi_mmap, |
1e6dd65e MCC |
1129 | .llseek = no_llseek, |
1130 | }; | |
1131 | ||
f905c442 | 1132 | static struct video_device vivi_template = { |
c820cc45 | 1133 | .name = "vivi", |
1e6dd65e | 1134 | .type = VID_TYPE_CAPTURE, |
1e6dd65e MCC |
1135 | .fops = &vivi_fops, |
1136 | .minor = -1, | |
f905c442 | 1137 | .release = video_device_release, |
c820cc45 MCC |
1138 | |
1139 | .vidioc_querycap = vidioc_querycap, | |
1140 | .vidioc_enum_fmt_cap = vidioc_enum_fmt_cap, | |
1141 | .vidioc_g_fmt_cap = vidioc_g_fmt_cap, | |
1142 | .vidioc_try_fmt_cap = vidioc_try_fmt_cap, | |
1143 | .vidioc_s_fmt_cap = vidioc_s_fmt_cap, | |
1144 | .vidioc_reqbufs = vidioc_reqbufs, | |
1145 | .vidioc_querybuf = vidioc_querybuf, | |
1146 | .vidioc_qbuf = vidioc_qbuf, | |
1147 | .vidioc_dqbuf = vidioc_dqbuf, | |
1148 | .vidioc_s_std = vidioc_s_std, | |
1149 | .vidioc_enum_input = vidioc_enum_input, | |
1150 | .vidioc_g_input = vidioc_g_input, | |
1151 | .vidioc_s_input = vidioc_s_input, | |
1152 | .vidioc_queryctrl = vidioc_queryctrl, | |
1153 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
1154 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
1155 | .vidioc_streamon = vidioc_streamon, | |
1156 | .vidioc_streamoff = vidioc_streamoff, | |
0dfa9abd | 1157 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
c820cc45 MCC |
1158 | .vidiocgmbuf = vidiocgmbuf, |
1159 | #endif | |
e75f9cee MCC |
1160 | .tvnorms = V4L2_STD_NTSC_M, |
1161 | .current_norm = V4L2_STD_NTSC_M, | |
1e6dd65e | 1162 | }; |
c820cc45 | 1163 | /* ----------------------------------------------------------------- |
1e6dd65e MCC |
1164 | Initialization and module stuff |
1165 | ------------------------------------------------------------------*/ | |
1166 | ||
1167 | static int __init vivi_init(void) | |
1168 | { | |
1169 | int ret; | |
1170 | struct vivi_dev *dev; | |
f905c442 | 1171 | struct video_device *vfd; |
1e6dd65e MCC |
1172 | |
1173 | dev = kzalloc(sizeof(*dev),GFP_KERNEL); | |
1174 | if (NULL == dev) | |
1175 | return -ENOMEM; | |
1176 | list_add_tail(&dev->vivi_devlist,&vivi_devlist); | |
1177 | ||
1178 | /* init video dma queues */ | |
1179 | INIT_LIST_HEAD(&dev->vidq.active); | |
1180 | INIT_LIST_HEAD(&dev->vidq.queued); | |
df3a7104 | 1181 | init_waitqueue_head(&dev->vidq.wq); |
1e6dd65e MCC |
1182 | |
1183 | /* initialize locks */ | |
51b54029 | 1184 | mutex_init(&dev->lock); |
1e6dd65e MCC |
1185 | |
1186 | dev->vidq.timeout.function = vivi_vid_timeout; | |
1187 | dev->vidq.timeout.data = (unsigned long)dev; | |
1188 | init_timer(&dev->vidq.timeout); | |
1189 | ||
f905c442 MCC |
1190 | vfd = video_device_alloc(); |
1191 | if (NULL == vfd) | |
1192 | return -ENOMEM; | |
1193 | ||
1194 | *vfd = vivi_template; | |
1195 | ||
1196 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr); | |
1197 | snprintf(vfd->name, sizeof(vfd->name), "%s (%i)", | |
1198 | vivi_template.name, vfd->minor); | |
1199 | ||
1200 | dev->vfd = vfd; | |
1201 | ||
1e6dd65e MCC |
1202 | printk(KERN_INFO "Video Technology Magazine Virtual Video Capture Board (Load status: %d)\n", ret); |
1203 | return ret; | |
1204 | } | |
1205 | ||
1206 | static void __exit vivi_exit(void) | |
1207 | { | |
1208 | struct vivi_dev *h; | |
1209 | struct list_head *list; | |
1210 | ||
72f678c3 AM |
1211 | while (!list_empty(&vivi_devlist)) { |
1212 | list = vivi_devlist.next; | |
1213 | list_del(list); | |
1e6dd65e | 1214 | h = list_entry(list, struct vivi_dev, vivi_devlist); |
f905c442 | 1215 | vivi_release(h); |
1e6dd65e MCC |
1216 | kfree (h); |
1217 | } | |
1e6dd65e MCC |
1218 | } |
1219 | ||
1220 | module_init(vivi_init); | |
1221 | module_exit(vivi_exit); | |
c820cc45 MCC |
1222 | |
1223 | MODULE_DESCRIPTION("Video Technology Magazine Virtual Video Capture Board"); | |
1224 | MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol"); | |
1225 | MODULE_LICENSE("Dual BSD/GPL"); | |
1226 | ||
1227 | module_param(video_nr, int, 0); | |
1228 | ||
1229 | module_param_named(debug,vivi.debug, int, 0644); | |
1230 | MODULE_PARM_DESC(debug,"activates debug info"); | |
1231 | ||
1232 | module_param(vid_limit,int,0644); | |
1233 | MODULE_PARM_DESC(vid_limit,"capture memory limit in megabytes"); | |
1234 |