Commit | Line | Data |
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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> | |
28 | #include <linux/videodev2.h> | |
1095136d | 29 | #include <linux/dma-mapping.h> |
cd41e28e MCC |
30 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
31 | /* Include V4L1 specific functions. Should be removed soon */ | |
32 | #include <linux/videodev.h> | |
33 | #endif | |
f13df919 | 34 | #include <linux/interrupt.h> |
1e6dd65e MCC |
35 | #include <media/video-buf.h> |
36 | #include <media/v4l2-common.h> | |
37 | #include <linux/kthread.h> | |
38 | #include <linux/highmem.h> | |
39 | ||
40 | /* Wake up at about 30 fps */ | |
41 | #define WAKE_NUMERATOR 30 | |
42 | #define WAKE_DENOMINATOR 1001 | |
43 | #define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */ | |
44 | ||
45 | /* These timers are for 1 fps - used only for testing */ | |
46 | //#define WAKE_DENOMINATOR 30 /* hack for testing purposes */ | |
47 | //#define BUFFER_TIMEOUT msecs_to_jiffies(5000) /* 5 seconds */ | |
48 | ||
49 | #include "font.h" | |
50 | ||
51 | #ifndef kzalloc | |
52 | #define kzalloc(size, flags) \ | |
53 | ({ \ | |
54 | void *__ret = kmalloc(size, flags); \ | |
55 | if (__ret) \ | |
56 | memset(__ret, 0, size); \ | |
57 | __ret; \ | |
58 | }) | |
59 | #endif | |
60 | ||
61 | MODULE_DESCRIPTION("Video Technology Magazine Virtual Video Capture Board"); | |
280323dd | 62 | MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol"); |
1e6dd65e MCC |
63 | MODULE_LICENSE("Dual BSD/GPL"); |
64 | ||
65 | #define VIVI_MAJOR_VERSION 0 | |
66 | #define VIVI_MINOR_VERSION 4 | |
67 | #define VIVI_RELEASE 0 | |
68 | #define VIVI_VERSION KERNEL_VERSION(VIVI_MAJOR_VERSION, VIVI_MINOR_VERSION, VIVI_RELEASE) | |
69 | ||
70 | static int video_nr = -1; /* /dev/videoN, -1 for autodetect */ | |
71 | module_param(video_nr, int, 0); | |
72 | ||
73 | static int debug = 0; | |
74 | module_param(debug, int, 0); | |
75 | ||
76 | static unsigned int vid_limit = 16; | |
77 | module_param(vid_limit,int,0644); | |
78 | MODULE_PARM_DESC(vid_limit,"capture memory limit in megabytes"); | |
79 | ||
80 | /* supported controls */ | |
81 | static struct v4l2_queryctrl vivi_qctrl[] = { | |
82 | { | |
83 | .id = V4L2_CID_AUDIO_VOLUME, | |
84 | .name = "Volume", | |
85 | .minimum = 0, | |
86 | .maximum = 65535, | |
87 | .step = 65535/100, | |
88 | .default_value = 65535, | |
89 | .flags = 0, | |
90 | .type = V4L2_CTRL_TYPE_INTEGER, | |
91 | },{ | |
92 | .id = V4L2_CID_BRIGHTNESS, | |
93 | .type = V4L2_CTRL_TYPE_INTEGER, | |
94 | .name = "Brightness", | |
95 | .minimum = 0, | |
96 | .maximum = 255, | |
97 | .step = 1, | |
98 | .default_value = 127, | |
99 | .flags = 0, | |
100 | }, { | |
101 | .id = V4L2_CID_CONTRAST, | |
102 | .type = V4L2_CTRL_TYPE_INTEGER, | |
103 | .name = "Contrast", | |
104 | .minimum = 0, | |
105 | .maximum = 255, | |
106 | .step = 0x1, | |
107 | .default_value = 0x10, | |
108 | .flags = 0, | |
109 | }, { | |
110 | .id = V4L2_CID_SATURATION, | |
111 | .type = V4L2_CTRL_TYPE_INTEGER, | |
112 | .name = "Saturation", | |
113 | .minimum = 0, | |
114 | .maximum = 255, | |
115 | .step = 0x1, | |
116 | .default_value = 127, | |
117 | .flags = 0, | |
118 | }, { | |
119 | .id = V4L2_CID_HUE, | |
120 | .type = V4L2_CTRL_TYPE_INTEGER, | |
121 | .name = "Hue", | |
122 | .minimum = -128, | |
123 | .maximum = 127, | |
124 | .step = 0x1, | |
125 | .default_value = 0, | |
126 | .flags = 0, | |
127 | } | |
128 | }; | |
129 | ||
130 | static int qctl_regs[ARRAY_SIZE(vivi_qctrl)]; | |
131 | ||
132 | #define dprintk(level,fmt, arg...) \ | |
133 | do { \ | |
134 | if (debug >= (level)) \ | |
135 | printk(KERN_DEBUG "vivi: " fmt , ## arg); \ | |
136 | } while (0) | |
137 | ||
138 | /* ------------------------------------------------------------------ | |
139 | Basic structures | |
140 | ------------------------------------------------------------------*/ | |
141 | ||
142 | struct vivi_fmt { | |
143 | char *name; | |
144 | u32 fourcc; /* v4l2 format id */ | |
145 | int depth; | |
146 | }; | |
147 | ||
148 | static struct vivi_fmt format = { | |
149 | .name = "4:2:2, packed, YUYV", | |
150 | .fourcc = V4L2_PIX_FMT_YUYV, | |
151 | .depth = 16, | |
152 | }; | |
153 | ||
154 | struct sg_to_addr { | |
155 | int pos; | |
156 | struct scatterlist *sg; | |
157 | }; | |
158 | ||
159 | /* buffer for one video frame */ | |
160 | struct vivi_buffer { | |
161 | /* common v4l buffer stuff -- must be first */ | |
162 | struct videobuf_buffer vb; | |
163 | ||
164 | struct vivi_fmt *fmt; | |
165 | ||
166 | struct sg_to_addr *to_addr; | |
167 | }; | |
168 | ||
169 | struct vivi_dmaqueue { | |
170 | struct list_head active; | |
171 | struct list_head queued; | |
172 | struct timer_list timeout; | |
173 | ||
174 | /* thread for generating video stream*/ | |
175 | struct task_struct *kthread; | |
176 | wait_queue_head_t wq; | |
177 | /* Counters to control fps rate */ | |
178 | int frame; | |
179 | int ini_jiffies; | |
180 | }; | |
181 | ||
182 | static LIST_HEAD(vivi_devlist); | |
183 | ||
184 | struct vivi_dev { | |
185 | struct list_head vivi_devlist; | |
186 | ||
187 | struct semaphore lock; | |
188 | ||
189 | int users; | |
190 | ||
191 | /* various device info */ | |
192 | unsigned int resources; | |
193 | struct video_device video_dev; | |
194 | ||
195 | struct vivi_dmaqueue vidq; | |
196 | ||
197 | /* Several counters */ | |
198 | int h,m,s,us,jiffies; | |
199 | char timestr[13]; | |
200 | }; | |
201 | ||
202 | struct vivi_fh { | |
203 | struct vivi_dev *dev; | |
204 | ||
205 | /* video capture */ | |
206 | struct vivi_fmt *fmt; | |
207 | unsigned int width,height; | |
208 | struct videobuf_queue vb_vidq; | |
209 | ||
210 | enum v4l2_buf_type type; | |
211 | }; | |
212 | ||
213 | /* ------------------------------------------------------------------ | |
214 | DMA and thread functions | |
215 | ------------------------------------------------------------------*/ | |
216 | ||
217 | /* Bars and Colors should match positions */ | |
218 | ||
219 | enum colors { | |
220 | WHITE, | |
221 | AMBAR, | |
222 | CYAN, | |
223 | GREEN, | |
224 | MAGENTA, | |
225 | RED, | |
226 | BLUE | |
227 | }; | |
228 | ||
229 | static u8 bars[8][3] = { | |
230 | /* R G B */ | |
231 | {204,204,204}, /* white */ | |
232 | {208,208, 0}, /* ambar */ | |
233 | { 0,206,206}, /* cyan */ | |
234 | { 0,239, 0}, /* green */ | |
235 | {239, 0,239}, /* magenta */ | |
236 | {205, 0, 0}, /* red */ | |
237 | { 0, 0,255}, /* blue */ | |
238 | { 0, 0, 0} | |
239 | }; | |
240 | ||
241 | #define TO_Y(r,g,b) (((16829*r +33039*g +6416*b + 32768)>>16)+16) | |
242 | /* RGB to V(Cr) Color transform */ | |
243 | #define TO_V(r,g,b) (((28784*r -24103*g -4681*b + 32768)>>16)+128) | |
244 | /* RGB to U(Cb) Color transform */ | |
245 | #define TO_U(r,g,b) (((-9714*r -19070*g +28784*b + 32768)>>16)+128) | |
246 | ||
247 | #define TSTAMP_MIN_Y 24 | |
248 | #define TSTAMP_MAX_Y TSTAMP_MIN_Y+15 | |
249 | #define TSTAMP_MIN_X 64 | |
250 | ||
251 | void prep_to_addr(struct sg_to_addr to_addr[],struct videobuf_buffer *vb) | |
252 | { | |
253 | int i, pos=0; | |
254 | ||
255 | for (i=0;i<vb->dma.nr_pages;i++) { | |
256 | to_addr[i].sg=&vb->dma.sglist[i]; | |
257 | to_addr[i].pos=pos; | |
258 | pos += vb->dma.sglist[i].length; | |
259 | } | |
260 | } | |
261 | ||
262 | inline int get_addr_pos(int pos, int pages, struct sg_to_addr to_addr[]) | |
263 | { | |
264 | int p1=0,p2=pages-1,p3=pages/2; | |
265 | ||
266 | /* Sanity test */ | |
267 | BUG_ON (pos>=to_addr[p2].pos+to_addr[p2].sg->length); | |
268 | ||
269 | while (p1+1<p2) { | |
270 | if (pos < to_addr[p3].pos) { | |
271 | p2=p3; | |
272 | } else { | |
273 | p1=p3; | |
274 | } | |
275 | p3=(p1+p2)/2; | |
276 | } | |
277 | if (pos >= to_addr[p2].pos) | |
278 | p1=p2; | |
279 | ||
280 | return (p1); | |
281 | } | |
282 | ||
283 | void gen_line(struct sg_to_addr to_addr[],int inipos,int pages,int wmax, | |
284 | int hmax, int line, char *timestr) | |
285 | { | |
286 | int w,i,j,pos=inipos,pgpos,oldpg,y; | |
287 | char *p,*s,*basep; | |
288 | struct page *pg; | |
289 | u8 chr,r,g,b,color; | |
290 | ||
291 | /* Get first addr pointed to pixel position */ | |
292 | oldpg=get_addr_pos(pos,pages,to_addr); | |
293 | pg=pfn_to_page(to_addr[oldpg].sg->dma_address >> PAGE_SHIFT); | |
294 | basep = kmap_atomic(pg, KM_BOUNCE_READ)+to_addr[oldpg].sg->offset; | |
295 | ||
296 | /* We will just duplicate the second pixel at the packet */ | |
297 | wmax/=2; | |
298 | ||
299 | /* Generate a standard color bar pattern */ | |
300 | for (w=0;w<wmax;w++) { | |
301 | r=bars[w*7/wmax][0]; | |
302 | g=bars[w*7/wmax][1]; | |
303 | b=bars[w*7/wmax][2]; | |
304 | ||
305 | for (color=0;color<4;color++) { | |
306 | pgpos=get_addr_pos(pos,pages,to_addr); | |
307 | if (pgpos!=oldpg) { | |
308 | pg=pfn_to_page(to_addr[pgpos].sg->dma_address >> PAGE_SHIFT); | |
309 | kunmap_atomic(basep, KM_BOUNCE_READ); | |
310 | basep= kmap_atomic(pg, KM_BOUNCE_READ)+to_addr[pgpos].sg->offset; | |
311 | oldpg=pgpos; | |
312 | } | |
313 | p=basep+pos-to_addr[pgpos].pos; | |
314 | ||
315 | switch (color) { | |
316 | case 0: | |
317 | case 2: | |
318 | *p=TO_Y(r,g,b); /* Luminance */ | |
319 | break; | |
320 | case 1: | |
321 | *p=TO_U(r,g,b); /* Cb */ | |
322 | break; | |
323 | case 3: | |
324 | *p=TO_V(r,g,b); /* Cr */ | |
325 | break; | |
326 | } | |
327 | pos++; | |
328 | } | |
329 | } | |
330 | ||
331 | /* Checks if it is possible to show timestamp */ | |
332 | if (TSTAMP_MAX_Y>=hmax) | |
333 | goto end; | |
334 | if (TSTAMP_MIN_X+strlen(timestr)>=wmax) | |
335 | goto end; | |
336 | ||
337 | /* Print stream time */ | |
338 | if (line>=TSTAMP_MIN_Y && line<=TSTAMP_MAX_Y) { | |
339 | j=TSTAMP_MIN_X; | |
340 | for (s=timestr;*s;s++) { | |
341 | chr=rom8x16_bits[(*s-0x30)*16+line-TSTAMP_MIN_Y]; | |
342 | for (i=0;i<7;i++) { | |
343 | if (chr&1<<(7-i)) { /* Font color*/ | |
344 | r=bars[BLUE][0]; | |
345 | g=bars[BLUE][1]; | |
346 | b=bars[BLUE][2]; | |
347 | r=g=b=0; | |
348 | g=198; | |
349 | } else { /* Background color */ | |
350 | r=bars[WHITE][0]; | |
351 | g=bars[WHITE][1]; | |
352 | b=bars[WHITE][2]; | |
353 | r=g=b=0; | |
354 | } | |
355 | ||
356 | pos=inipos+j*2; | |
357 | for (color=0;color<4;color++) { | |
358 | pgpos=get_addr_pos(pos,pages,to_addr); | |
359 | if (pgpos!=oldpg) { | |
360 | pg=pfn_to_page(to_addr[pgpos]. | |
361 | sg->dma_address | |
362 | >> PAGE_SHIFT); | |
363 | kunmap_atomic(basep, | |
364 | KM_BOUNCE_READ); | |
365 | basep= kmap_atomic(pg, | |
366 | KM_BOUNCE_READ)+ | |
367 | to_addr[pgpos].sg->offset; | |
368 | oldpg=pgpos; | |
369 | } | |
370 | p=basep+pos-to_addr[pgpos].pos; | |
371 | ||
372 | y=TO_Y(r,g,b); | |
373 | ||
374 | switch (color) { | |
375 | case 0: | |
376 | case 2: | |
377 | *p=TO_Y(r,g,b); /* Luminance */ | |
378 | break; | |
379 | case 1: | |
380 | *p=TO_U(r,g,b); /* Cb */ | |
381 | break; | |
382 | case 3: | |
383 | *p=TO_V(r,g,b); /* Cr */ | |
384 | break; | |
385 | } | |
386 | pos++; | |
387 | } | |
388 | j++; | |
389 | } | |
390 | } | |
391 | } | |
392 | ||
393 | ||
394 | end: | |
395 | kunmap_atomic(basep, KM_BOUNCE_READ); | |
396 | } | |
397 | static void vivi_fillbuff(struct vivi_dev *dev,struct vivi_buffer *buf) | |
398 | { | |
399 | int h,pos=0; | |
400 | int hmax = buf->vb.height; | |
401 | int wmax = buf->vb.width; | |
402 | struct videobuf_buffer *vb=&buf->vb; | |
403 | struct sg_to_addr *to_addr=buf->to_addr; | |
404 | struct timeval ts; | |
405 | ||
406 | /* Test if DMA mapping is ready */ | |
407 | if (!vb->dma.sglist[0].dma_address) | |
408 | return; | |
409 | ||
410 | prep_to_addr(to_addr,vb); | |
411 | ||
412 | /* Check if there is enough memory */ | |
413 | BUG_ON(buf->vb.dma.nr_pages << PAGE_SHIFT < (buf->vb.width*buf->vb.height)*2); | |
414 | ||
415 | for (h=0;h<hmax;h++) { | |
416 | gen_line(to_addr,pos,vb->dma.nr_pages,wmax,hmax,h,dev->timestr); | |
417 | pos += wmax*2; | |
418 | } | |
419 | ||
420 | /* Updates stream time */ | |
421 | ||
422 | dev->us+=jiffies_to_usecs(jiffies-dev->jiffies); | |
423 | dev->jiffies=jiffies; | |
424 | if (dev->us>=1000000) { | |
425 | dev->us-=1000000; | |
426 | dev->s++; | |
427 | if (dev->s>=60) { | |
428 | dev->s-=60; | |
429 | dev->m++; | |
430 | if (dev->m>60) { | |
431 | dev->m-=60; | |
432 | dev->h++; | |
433 | if (dev->h>24) | |
434 | dev->h-=24; | |
435 | } | |
436 | } | |
437 | } | |
438 | sprintf(dev->timestr,"%02d:%02d:%02d:%03d", | |
439 | dev->h,dev->m,dev->s,(dev->us+500)/1000); | |
440 | ||
441 | dprintk(2,"vivifill at %s: Buffer 0x%08lx size= %d\n",dev->timestr, | |
442 | (unsigned long)buf->vb.dma.vmalloc,pos); | |
443 | ||
444 | /* Advice that buffer was filled */ | |
445 | buf->vb.state = STATE_DONE; | |
446 | buf->vb.field_count++; | |
447 | do_gettimeofday(&ts); | |
448 | buf->vb.ts = ts; | |
449 | ||
450 | list_del(&buf->vb.queue); | |
451 | wake_up(&buf->vb.done); | |
452 | } | |
453 | ||
454 | static int restart_video_queue(struct vivi_dmaqueue *dma_q); | |
455 | ||
456 | static void vivi_thread_tick(struct vivi_dmaqueue *dma_q) | |
457 | { | |
458 | struct vivi_buffer *buf; | |
459 | struct vivi_dev *dev= container_of(dma_q,struct vivi_dev,vidq); | |
460 | ||
461 | int bc; | |
462 | ||
463 | /* Announces videobuf that all went ok */ | |
464 | for (bc = 0;; bc++) { | |
465 | if (list_empty(&dma_q->active)) { | |
466 | dprintk(1,"No active queue to serve\n"); | |
467 | break; | |
468 | } | |
469 | ||
470 | buf = list_entry(dma_q->active.next, | |
471 | struct vivi_buffer, vb.queue); | |
472 | ||
473 | /* Nobody is waiting something to be done, just return */ | |
474 | if (!waitqueue_active(&buf->vb.done)) { | |
475 | mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); | |
476 | return; | |
477 | } | |
478 | ||
479 | do_gettimeofday(&buf->vb.ts); | |
480 | dprintk(2,"[%p/%d] wakeup\n",buf,buf->vb.i); | |
481 | ||
482 | /* Fill buffer */ | |
483 | vivi_fillbuff(dev,buf); | |
484 | } | |
485 | if (list_empty(&dma_q->active)) { | |
486 | del_timer(&dma_q->timeout); | |
487 | } else { | |
488 | mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); | |
489 | } | |
490 | if (bc != 1) | |
491 | dprintk(1,"%s: %d buffers handled (should be 1)\n",__FUNCTION__,bc); | |
492 | } | |
493 | ||
494 | void vivi_sleep(struct vivi_dmaqueue *dma_q) | |
495 | { | |
496 | int timeout; | |
497 | DECLARE_WAITQUEUE(wait, current); | |
498 | ||
499 | dprintk(1,"%s dma_q=0x%08lx\n",__FUNCTION__,(unsigned long)dma_q); | |
500 | ||
501 | add_wait_queue(&dma_q->wq, &wait); | |
502 | if (!kthread_should_stop()) { | |
503 | dma_q->frame++; | |
504 | ||
505 | /* Calculate time to wake up */ | |
506 | timeout=dma_q->ini_jiffies+msecs_to_jiffies((dma_q->frame*WAKE_NUMERATOR*1000)/WAKE_DENOMINATOR)-jiffies; | |
507 | ||
508 | if (timeout <= 0) { | |
509 | int old=dma_q->frame; | |
510 | dma_q->frame=(jiffies_to_msecs(jiffies-dma_q->ini_jiffies)*WAKE_DENOMINATOR)/(WAKE_NUMERATOR*1000)+1; | |
511 | ||
512 | timeout=dma_q->ini_jiffies+msecs_to_jiffies((dma_q->frame*WAKE_NUMERATOR*1000)/WAKE_DENOMINATOR)-jiffies; | |
513 | ||
514 | dprintk(1,"underrun, losed %d frames. " | |
515 | "Now, frame is %d. Waking on %d jiffies\n", | |
516 | dma_q->frame-old,dma_q->frame,timeout); | |
517 | } else | |
518 | dprintk(1,"will sleep for %i jiffies\n",timeout); | |
519 | ||
520 | vivi_thread_tick(dma_q); | |
521 | ||
522 | schedule_timeout_interruptible (timeout); | |
523 | } | |
524 | ||
525 | remove_wait_queue(&dma_q->wq, &wait); | |
526 | try_to_freeze(); | |
527 | } | |
528 | ||
529 | int vivi_thread(void *data) | |
530 | { | |
531 | struct vivi_dmaqueue *dma_q=data; | |
532 | ||
533 | dprintk(1,"thread started\n"); | |
534 | ||
535 | for (;;) { | |
536 | vivi_sleep(dma_q); | |
537 | ||
538 | if (kthread_should_stop()) | |
539 | break; | |
540 | } | |
541 | dprintk(1, "thread: exit\n"); | |
542 | return 0; | |
543 | } | |
544 | ||
545 | int vivi_start_thread(struct vivi_dmaqueue *dma_q) | |
546 | { | |
547 | dma_q->frame=0; | |
548 | dma_q->ini_jiffies=jiffies; | |
549 | ||
550 | dprintk(1,"%s\n",__FUNCTION__); | |
551 | init_waitqueue_head(&dma_q->wq); | |
552 | ||
553 | dma_q->kthread = kthread_run(vivi_thread, dma_q, "vivi"); | |
554 | ||
555 | if (dma_q->kthread == NULL) { | |
556 | printk(KERN_ERR "vivi: kernel_thread() failed\n"); | |
557 | return -EINVAL; | |
558 | } | |
559 | dprintk(1,"returning from %s\n",__FUNCTION__); | |
560 | return 0; | |
561 | } | |
562 | ||
563 | void vivi_stop_thread(struct vivi_dmaqueue *dma_q) | |
564 | { | |
565 | dprintk(1,"%s\n",__FUNCTION__); | |
566 | /* shutdown control thread */ | |
567 | if (dma_q->kthread) { | |
568 | kthread_stop(dma_q->kthread); | |
569 | dma_q->kthread=NULL; | |
570 | } | |
571 | } | |
572 | ||
573 | static int restart_video_queue(struct vivi_dmaqueue *dma_q) | |
574 | { | |
575 | struct vivi_buffer *buf, *prev; | |
576 | struct list_head *item; | |
577 | ||
578 | dprintk(1,"%s dma_q=0x%08lx\n",__FUNCTION__,(unsigned long)dma_q); | |
579 | ||
580 | if (!list_empty(&dma_q->active)) { | |
581 | buf = list_entry(dma_q->active.next, struct vivi_buffer, vb.queue); | |
582 | dprintk(2,"restart_queue [%p/%d]: restart dma\n", | |
583 | buf, buf->vb.i); | |
584 | ||
585 | dprintk(1,"Restarting video dma\n"); | |
586 | vivi_stop_thread(dma_q); | |
587 | // vivi_start_thread(dma_q); | |
588 | ||
589 | /* cancel all outstanding capture / vbi requests */ | |
590 | list_for_each(item,&dma_q->active) { | |
591 | buf = list_entry(item, struct vivi_buffer, vb.queue); | |
592 | ||
593 | list_del(&buf->vb.queue); | |
594 | buf->vb.state = STATE_ERROR; | |
595 | wake_up(&buf->vb.done); | |
596 | } | |
597 | mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); | |
598 | ||
599 | return 0; | |
600 | } | |
601 | ||
602 | prev = NULL; | |
603 | for (;;) { | |
604 | if (list_empty(&dma_q->queued)) | |
605 | return 0; | |
606 | buf = list_entry(dma_q->queued.next, struct vivi_buffer, vb.queue); | |
607 | if (NULL == prev) { | |
608 | list_del(&buf->vb.queue); | |
609 | list_add_tail(&buf->vb.queue,&dma_q->active); | |
610 | ||
611 | dprintk(1,"Restarting video dma\n"); | |
612 | vivi_stop_thread(dma_q); | |
613 | vivi_start_thread(dma_q); | |
614 | ||
615 | buf->vb.state = STATE_ACTIVE; | |
616 | mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); | |
617 | dprintk(2,"[%p/%d] restart_queue - first active\n", | |
618 | buf,buf->vb.i); | |
619 | ||
620 | } else if (prev->vb.width == buf->vb.width && | |
621 | prev->vb.height == buf->vb.height && | |
622 | prev->fmt == buf->fmt) { | |
623 | list_del(&buf->vb.queue); | |
624 | list_add_tail(&buf->vb.queue,&dma_q->active); | |
625 | buf->vb.state = STATE_ACTIVE; | |
626 | dprintk(2,"[%p/%d] restart_queue - move to active\n", | |
627 | buf,buf->vb.i); | |
628 | } else { | |
629 | return 0; | |
630 | } | |
631 | prev = buf; | |
632 | } | |
633 | } | |
634 | ||
635 | static void vivi_vid_timeout(unsigned long data) | |
636 | { | |
637 | struct vivi_dev *dev = (struct vivi_dev*)data; | |
638 | struct vivi_dmaqueue *vidq = &dev->vidq; | |
639 | struct vivi_buffer *buf; | |
640 | ||
641 | while (!list_empty(&vidq->active)) { | |
642 | buf = list_entry(vidq->active.next, struct vivi_buffer, vb.queue); | |
643 | list_del(&buf->vb.queue); | |
644 | buf->vb.state = STATE_ERROR; | |
645 | wake_up(&buf->vb.done); | |
646 | printk("vivi/0: [%p/%d] timeout\n", buf, buf->vb.i); | |
647 | } | |
648 | ||
649 | restart_video_queue(vidq); | |
650 | } | |
651 | ||
652 | /* ------------------------------------------------------------------ | |
653 | Videobuf operations | |
654 | ------------------------------------------------------------------*/ | |
655 | static int | |
656 | buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) | |
657 | { | |
658 | struct vivi_fh *fh = vq->priv_data; | |
659 | ||
660 | *size = fh->width*fh->height*2; | |
661 | ||
662 | if (0 == *count) | |
663 | *count = 32; | |
664 | while (*size * *count > vid_limit * 1024 * 1024) | |
665 | (*count)--; | |
666 | return 0; | |
667 | } | |
668 | ||
669 | void | |
670 | free_buffer(struct videobuf_queue *vq, struct vivi_buffer *buf) | |
671 | { | |
672 | dprintk(1,"%s\n",__FUNCTION__); | |
673 | ||
674 | if (in_interrupt()) | |
675 | BUG(); | |
676 | ||
677 | /*FIXME: Maybe a spinlock is required here */ | |
678 | kfree(buf->to_addr); | |
679 | buf->to_addr=NULL; | |
680 | ||
681 | videobuf_waiton(&buf->vb,0,0); | |
682 | videobuf_dma_unmap(vq, &buf->vb.dma); | |
683 | videobuf_dma_free(&buf->vb.dma); | |
684 | buf->vb.state = STATE_NEEDS_INIT; | |
685 | } | |
686 | ||
687 | #define norm_maxw() 1024 | |
688 | #define norm_maxh() 768 | |
689 | static int | |
690 | buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, | |
691 | enum v4l2_field field) | |
692 | { | |
693 | struct vivi_fh *fh = vq->priv_data; | |
694 | struct vivi_buffer *buf = container_of(vb,struct vivi_buffer,vb); | |
695 | int rc, init_buffer = 0; | |
696 | ||
697 | // dprintk(1,"%s, field=%d\n",__FUNCTION__,field); | |
698 | ||
699 | BUG_ON(NULL == fh->fmt); | |
700 | if (fh->width < 48 || fh->width > norm_maxw() || | |
701 | fh->height < 32 || fh->height > norm_maxh()) | |
702 | return -EINVAL; | |
703 | buf->vb.size = fh->width*fh->height*2; | |
704 | if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) | |
705 | return -EINVAL; | |
706 | ||
707 | if (buf->fmt != fh->fmt || | |
708 | buf->vb.width != fh->width || | |
709 | buf->vb.height != fh->height || | |
710 | buf->vb.field != field) { | |
711 | buf->fmt = fh->fmt; | |
712 | buf->vb.width = fh->width; | |
713 | buf->vb.height = fh->height; | |
714 | buf->vb.field = field; | |
715 | init_buffer = 1; | |
716 | } | |
717 | ||
718 | if (STATE_NEEDS_INIT == buf->vb.state) { | |
719 | if (0 != (rc = videobuf_iolock(vq,&buf->vb,NULL))) | |
720 | goto fail; | |
721 | } | |
722 | ||
723 | buf->vb.state = STATE_PREPARED; | |
724 | ||
725 | if (NULL == (buf->to_addr = kmalloc(sizeof(*buf->to_addr) * vb->dma.nr_pages,GFP_KERNEL))) { | |
726 | rc=-ENOMEM; | |
727 | goto fail; | |
728 | } | |
729 | ||
730 | return 0; | |
731 | ||
732 | fail: | |
733 | free_buffer(vq,buf); | |
734 | return rc; | |
735 | } | |
736 | ||
737 | static void | |
738 | buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) | |
739 | { | |
740 | struct vivi_buffer *buf = container_of(vb,struct vivi_buffer,vb); | |
741 | struct vivi_fh *fh = vq->priv_data; | |
742 | struct vivi_dev *dev = fh->dev; | |
743 | struct vivi_dmaqueue *vidq = &dev->vidq; | |
744 | struct vivi_buffer *prev; | |
745 | ||
746 | if (!list_empty(&vidq->queued)) { | |
747 | dprintk(1,"adding vb queue=0x%08lx\n",(unsigned long)&buf->vb.queue); | |
748 | list_add_tail(&buf->vb.queue,&vidq->queued); | |
749 | buf->vb.state = STATE_QUEUED; | |
750 | dprintk(2,"[%p/%d] buffer_queue - append to queued\n", | |
751 | buf, buf->vb.i); | |
752 | } else if (list_empty(&vidq->active)) { | |
753 | list_add_tail(&buf->vb.queue,&vidq->active); | |
754 | ||
755 | buf->vb.state = STATE_ACTIVE; | |
756 | mod_timer(&vidq->timeout, jiffies+BUFFER_TIMEOUT); | |
757 | dprintk(2,"[%p/%d] buffer_queue - first active\n", | |
758 | buf, buf->vb.i); | |
759 | ||
760 | vivi_start_thread(vidq); | |
761 | } else { | |
762 | prev = list_entry(vidq->active.prev, struct vivi_buffer, vb.queue); | |
763 | if (prev->vb.width == buf->vb.width && | |
764 | prev->vb.height == buf->vb.height && | |
765 | prev->fmt == buf->fmt) { | |
766 | list_add_tail(&buf->vb.queue,&vidq->active); | |
767 | buf->vb.state = STATE_ACTIVE; | |
768 | dprintk(2,"[%p/%d] buffer_queue - append to active\n", | |
769 | buf, buf->vb.i); | |
770 | ||
771 | } else { | |
772 | list_add_tail(&buf->vb.queue,&vidq->queued); | |
773 | buf->vb.state = STATE_QUEUED; | |
774 | dprintk(2,"[%p/%d] buffer_queue - first queued\n", | |
775 | buf, buf->vb.i); | |
776 | } | |
777 | } | |
778 | } | |
779 | ||
780 | static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb) | |
781 | { | |
782 | struct vivi_buffer *buf = container_of(vb,struct vivi_buffer,vb); | |
783 | struct vivi_fh *fh = vq->priv_data; | |
784 | struct vivi_dev *dev = (struct vivi_dev*)fh->dev; | |
785 | struct vivi_dmaqueue *vidq = &dev->vidq; | |
786 | ||
787 | dprintk(1,"%s\n",__FUNCTION__); | |
788 | ||
789 | vivi_stop_thread(vidq); | |
790 | ||
791 | free_buffer(vq,buf); | |
792 | } | |
793 | ||
794 | int vivi_map_sg (void *dev, struct scatterlist *sg, int nents, | |
795 | int direction) | |
796 | { | |
797 | int i; | |
798 | ||
799 | dprintk(1,"%s, number of pages=%d\n",__FUNCTION__,nents); | |
800 | BUG_ON(direction == DMA_NONE); | |
801 | ||
802 | for (i = 0; i < nents; i++ ) { | |
803 | BUG_ON(!sg[i].page); | |
804 | ||
805 | sg[i].dma_address = page_to_phys(sg[i].page) + sg[i].offset; | |
806 | } | |
807 | ||
808 | return nents; | |
809 | } | |
810 | ||
811 | int vivi_unmap_sg(void *dev,struct scatterlist *sglist,int nr_pages, | |
812 | int direction) | |
813 | { | |
814 | dprintk(1,"%s\n",__FUNCTION__); | |
815 | return 0; | |
816 | } | |
817 | ||
818 | int vivi_dma_sync_sg(void *dev,struct scatterlist *sglist,int nr_pages, | |
819 | int direction) | |
820 | { | |
821 | // dprintk(1,"%s\n",__FUNCTION__); | |
822 | ||
823 | // flush_write_buffers(); | |
824 | return 0; | |
825 | } | |
826 | ||
827 | static struct videobuf_queue_ops vivi_video_qops = { | |
828 | .buf_setup = buffer_setup, | |
829 | .buf_prepare = buffer_prepare, | |
830 | .buf_queue = buffer_queue, | |
831 | .buf_release = buffer_release, | |
832 | ||
833 | /* Non-pci handling routines */ | |
834 | .vb_map_sg = vivi_map_sg, | |
835 | .vb_dma_sync_sg = vivi_dma_sync_sg, | |
836 | .vb_unmap_sg = vivi_unmap_sg, | |
837 | }; | |
838 | ||
839 | /* ------------------------------------------------------------------ | |
840 | IOCTL handling | |
841 | ------------------------------------------------------------------*/ | |
842 | ||
843 | static int vivi_try_fmt(struct vivi_dev *dev, struct vivi_fh *fh, | |
844 | struct v4l2_format *f) | |
845 | { | |
846 | struct vivi_fmt *fmt; | |
847 | enum v4l2_field field; | |
848 | unsigned int maxw, maxh; | |
849 | ||
850 | if (format.fourcc != f->fmt.pix.pixelformat) { | |
851 | dprintk(1,"Fourcc format invalid.\n"); | |
852 | return -EINVAL; | |
853 | } | |
854 | fmt=&format; | |
855 | ||
856 | field = f->fmt.pix.field; | |
857 | ||
858 | if (field == V4L2_FIELD_ANY) { | |
859 | // field=V4L2_FIELD_INTERLACED; | |
860 | field=V4L2_FIELD_SEQ_TB; | |
861 | } else if (V4L2_FIELD_INTERLACED != field) { | |
862 | dprintk(1,"Field type invalid.\n"); | |
863 | return -EINVAL; | |
864 | } | |
865 | ||
866 | maxw = norm_maxw(); | |
867 | maxh = norm_maxh(); | |
868 | ||
869 | f->fmt.pix.field = field; | |
870 | if (f->fmt.pix.height < 32) | |
871 | f->fmt.pix.height = 32; | |
872 | if (f->fmt.pix.height > maxh) | |
873 | f->fmt.pix.height = maxh; | |
874 | if (f->fmt.pix.width < 48) | |
875 | f->fmt.pix.width = 48; | |
876 | if (f->fmt.pix.width > maxw) | |
877 | f->fmt.pix.width = maxw; | |
878 | f->fmt.pix.width &= ~0x03; | |
879 | f->fmt.pix.bytesperline = | |
880 | (f->fmt.pix.width * fmt->depth) >> 3; | |
881 | f->fmt.pix.sizeimage = | |
882 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
883 | ||
884 | return 0; | |
885 | } | |
886 | ||
887 | static int res_get(struct vivi_dev *dev, struct vivi_fh *fh) | |
888 | { | |
889 | /* is it free? */ | |
890 | down(&dev->lock); | |
891 | if (dev->resources) { | |
892 | /* no, someone else uses it */ | |
893 | up(&dev->lock); | |
894 | return 0; | |
895 | } | |
896 | /* it's free, grab it */ | |
897 | dev->resources =1; | |
898 | dprintk(1,"res: get\n"); | |
899 | up(&dev->lock); | |
900 | return 1; | |
901 | } | |
902 | ||
903 | static inline int res_locked(struct vivi_dev *dev) | |
904 | { | |
905 | return (dev->resources); | |
906 | } | |
907 | ||
908 | static void res_free(struct vivi_dev *dev, struct vivi_fh *fh) | |
909 | { | |
910 | down(&dev->lock); | |
911 | dev->resources = 0; | |
912 | dprintk(1,"res: put\n"); | |
913 | up(&dev->lock); | |
914 | } | |
915 | ||
916 | static int vivi_do_ioctl(struct inode *inode, struct file *file, unsigned int cmd, void *arg) | |
917 | { | |
918 | struct vivi_fh *fh = file->private_data; | |
919 | struct vivi_dev *dev = fh->dev; | |
920 | int ret=0; | |
921 | ||
922 | if (debug) { | |
923 | if (_IOC_DIR(cmd) & _IOC_WRITE) | |
924 | v4l_printk_ioctl_arg("vivi(w)",cmd, arg); | |
925 | else if (!_IOC_DIR(cmd) & _IOC_READ) { | |
926 | v4l_print_ioctl("vivi", cmd); | |
927 | } | |
928 | } | |
929 | ||
930 | switch(cmd) { | |
931 | /* --- capabilities ------------------------------------------ */ | |
932 | case VIDIOC_QUERYCAP: | |
933 | { | |
934 | struct v4l2_capability *cap = (struct v4l2_capability*)arg; | |
935 | ||
936 | memset(cap, 0, sizeof(*cap)); | |
937 | ||
938 | strcpy(cap->driver, "vivi"); | |
939 | strcpy(cap->card, "vivi"); | |
940 | cap->version = VIVI_VERSION; | |
941 | cap->capabilities = | |
942 | V4L2_CAP_VIDEO_CAPTURE | | |
943 | V4L2_CAP_STREAMING | | |
944 | V4L2_CAP_READWRITE; | |
945 | break; | |
946 | } | |
947 | /* --- capture ioctls ---------------------------------------- */ | |
948 | case VIDIOC_ENUM_FMT: | |
949 | { | |
950 | struct v4l2_fmtdesc *f = arg; | |
951 | enum v4l2_buf_type type; | |
952 | unsigned int index; | |
953 | ||
954 | index = f->index; | |
955 | type = f->type; | |
956 | ||
957 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { | |
958 | ret=-EINVAL; | |
959 | break; | |
960 | } | |
961 | ||
962 | switch (type) { | |
963 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
964 | if (index > 0){ | |
965 | ret=-EINVAL; | |
966 | break; | |
967 | } | |
968 | memset(f,0,sizeof(*f)); | |
969 | ||
970 | f->index = index; | |
971 | f->type = type; | |
972 | strlcpy(f->description,format.name,sizeof(f->description)); | |
973 | f->pixelformat = format.fourcc; | |
974 | break; | |
975 | default: | |
976 | ret=-EINVAL; | |
977 | } | |
978 | break; | |
979 | } | |
980 | case VIDIOC_G_FMT: | |
981 | { | |
982 | struct v4l2_format *f = (struct v4l2_format *)arg; | |
983 | ||
984 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { | |
985 | ret=-EINVAL; | |
986 | break; | |
987 | } | |
988 | ||
989 | memset(&f->fmt.pix,0,sizeof(f->fmt.pix)); | |
990 | f->fmt.pix.width = fh->width; | |
991 | f->fmt.pix.height = fh->height; | |
992 | f->fmt.pix.field = fh->vb_vidq.field; | |
993 | f->fmt.pix.pixelformat = fh->fmt->fourcc; | |
994 | f->fmt.pix.bytesperline = | |
995 | (f->fmt.pix.width * fh->fmt->depth) >> 3; | |
996 | f->fmt.pix.sizeimage = | |
997 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
998 | break; | |
999 | } | |
1000 | case VIDIOC_S_FMT: | |
1001 | { | |
1002 | struct v4l2_format *f = arg; | |
1003 | ||
1004 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { | |
1005 | dprintk(1,"Only capture supported.\n"); | |
1006 | ret=-EINVAL; | |
1007 | break; | |
1008 | } | |
1009 | ||
1010 | ret = vivi_try_fmt(dev,fh,f); | |
1011 | if (ret < 0) | |
1012 | break; | |
1013 | ||
1014 | fh->fmt = &format; | |
1015 | fh->width = f->fmt.pix.width; | |
1016 | fh->height = f->fmt.pix.height; | |
1017 | fh->vb_vidq.field = f->fmt.pix.field; | |
1018 | fh->type = f->type; | |
1019 | ||
1020 | break; | |
1021 | } | |
1022 | case VIDIOC_TRY_FMT: | |
1023 | { | |
1024 | struct v4l2_format *f = arg; | |
1025 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { | |
1026 | ret=-EINVAL; | |
1027 | break; | |
1028 | } | |
1029 | ||
1030 | ret=vivi_try_fmt(dev,fh,f); | |
1031 | break; | |
1032 | } | |
1033 | case VIDIOC_REQBUFS: | |
1034 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { | |
1035 | ret=-EINVAL; | |
1036 | break; | |
1037 | } | |
1038 | ret=videobuf_reqbufs(&fh->vb_vidq, arg); | |
1039 | break; | |
1040 | case VIDIOC_QUERYBUF: | |
1041 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { | |
1042 | ret=-EINVAL; | |
1043 | break; | |
1044 | } | |
1045 | ret=videobuf_querybuf(&fh->vb_vidq, arg); | |
1046 | break; | |
1047 | case VIDIOC_QBUF: | |
1048 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { | |
1049 | ret=-EINVAL; | |
1050 | break; | |
1051 | } | |
1052 | ret=videobuf_qbuf(&fh->vb_vidq, arg); | |
1053 | break; | |
1054 | case VIDIOC_DQBUF: | |
1055 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { | |
1056 | ret=-EINVAL; | |
1057 | break; | |
1058 | } | |
1059 | ret=videobuf_dqbuf(&fh->vb_vidq, arg, | |
1060 | file->f_flags & O_NONBLOCK); | |
1061 | break; | |
1062 | #ifdef HAVE_V4L1 | |
1063 | /* --- streaming capture ------------------------------------- */ | |
1064 | case VIDIOCGMBUF: | |
1065 | { | |
1066 | struct video_mbuf *mbuf = arg; | |
1067 | struct videobuf_queue *q=&fh->vb_vidq; | |
1068 | struct v4l2_requestbuffers req; | |
1069 | unsigned int i; | |
1070 | ||
1071 | memset(&req,0,sizeof(req)); | |
1072 | req.type = q->type; | |
1073 | req.count = 8; | |
1074 | req.memory = V4L2_MEMORY_MMAP; | |
1075 | ret = videobuf_reqbufs(q,&req); | |
1076 | if (ret < 0) | |
1077 | break; | |
1078 | memset(mbuf,0,sizeof(*mbuf)); | |
1079 | mbuf->frames = req.count; | |
1080 | mbuf->size = 0; | |
1081 | for (i = 0; i < mbuf->frames; i++) { | |
1082 | mbuf->offsets[i] = q->bufs[i]->boff; | |
1083 | mbuf->size += q->bufs[i]->bsize; | |
1084 | } | |
1085 | break; | |
1086 | } | |
1087 | #endif | |
1088 | case VIDIOC_STREAMON: | |
1089 | { | |
1090 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1091 | return -EINVAL; | |
1092 | if (!res_get(dev,fh)) | |
1093 | return -EBUSY; | |
1094 | ret=videobuf_streamon(&fh->vb_vidq); | |
1095 | break; | |
1096 | } | |
1097 | case VIDIOC_STREAMOFF: | |
1098 | { | |
1099 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { | |
1100 | ret=-EINVAL; | |
1101 | break; | |
1102 | } | |
1103 | ret = videobuf_streamoff(&fh->vb_vidq); | |
1104 | if (ret < 0) | |
1105 | break; | |
1106 | res_free(dev,fh); | |
1107 | break; | |
1108 | } | |
1109 | /* ---------- tv norms ---------- */ | |
1110 | case VIDIOC_ENUMSTD: | |
1111 | { | |
1112 | struct v4l2_standard *e = arg; | |
1113 | ||
1114 | if (e->index>0) { | |
1115 | ret=-EINVAL; | |
1116 | break; | |
1117 | } | |
1118 | ret = v4l2_video_std_construct(e, V4L2_STD_NTSC_M, "NTSC-M"); | |
1119 | ||
1120 | /* Allows vivi to use different fps from video std */ | |
1121 | e->frameperiod.numerator = WAKE_NUMERATOR; | |
1122 | e->frameperiod.denominator = WAKE_DENOMINATOR; | |
1123 | ||
1124 | break; | |
1125 | } | |
1126 | case VIDIOC_G_STD: | |
1127 | { | |
1128 | v4l2_std_id *id = arg; | |
1129 | ||
1130 | *id = V4L2_STD_NTSC_M; | |
1131 | break; | |
1132 | } | |
1133 | case VIDIOC_S_STD: | |
1134 | { | |
1135 | break; | |
1136 | } | |
1137 | /* ------ input switching ---------- */ | |
1138 | case VIDIOC_ENUMINPUT: | |
1139 | { /* only one input in this sample driver */ | |
1140 | struct v4l2_input *inp = arg; | |
1141 | ||
1142 | if (inp->index != 0) { | |
1143 | ret=-EINVAL; | |
1144 | break; | |
1145 | } | |
1146 | memset(inp, 0, sizeof(*inp)); | |
1147 | ||
1148 | inp->index = 0; | |
1149 | inp->type = V4L2_INPUT_TYPE_CAMERA; | |
1150 | inp->std = V4L2_STD_NTSC_M; | |
1151 | strcpy(inp->name,"Camera"); | |
1152 | break; | |
1153 | } | |
1154 | case VIDIOC_G_INPUT: | |
1155 | { | |
1156 | unsigned int *i = arg; | |
1157 | ||
1158 | *i = 0; | |
1159 | break; | |
1160 | } | |
1161 | case VIDIOC_S_INPUT: | |
1162 | { | |
1163 | unsigned int *i = arg; | |
1164 | ||
1165 | if (*i > 0) | |
1166 | ret=-EINVAL; | |
1167 | break; | |
1168 | } | |
1169 | ||
1170 | /* --- controls ---------------------------------------------- */ | |
1171 | case VIDIOC_QUERYCTRL: | |
1172 | { | |
1173 | struct v4l2_queryctrl *qc = arg; | |
1174 | int i; | |
1175 | ||
1176 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
1177 | if (qc->id && qc->id == vivi_qctrl[i].id) { | |
1178 | memcpy(qc, &(vivi_qctrl[i]), | |
1179 | sizeof(*qc)); | |
1180 | break; | |
1181 | } | |
1182 | ||
1183 | ret=-EINVAL; | |
1184 | break; | |
1185 | } | |
1186 | case VIDIOC_G_CTRL: | |
1187 | { | |
1188 | struct v4l2_control *ctrl = arg; | |
1189 | int i; | |
1190 | ||
1191 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
1192 | if (ctrl->id == vivi_qctrl[i].id) { | |
1193 | ctrl->value=qctl_regs[i]; | |
1194 | break; | |
1195 | } | |
1196 | ||
1197 | ret=-EINVAL; | |
1198 | break; | |
1199 | } | |
1200 | case VIDIOC_S_CTRL: | |
1201 | { | |
1202 | struct v4l2_control *ctrl = arg; | |
1203 | int i; | |
1204 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
1205 | if (ctrl->id == vivi_qctrl[i].id) { | |
1206 | if (ctrl->value < | |
1207 | vivi_qctrl[i].minimum | |
1208 | || ctrl->value > | |
1209 | vivi_qctrl[i].maximum) { | |
1210 | ret=-ERANGE; | |
1211 | break; | |
1212 | } | |
1213 | qctl_regs[i]=ctrl->value; | |
1214 | break; | |
1215 | } | |
1216 | ret=-EINVAL; | |
1217 | break; | |
1218 | } | |
1219 | default: | |
1220 | ret=v4l_compat_translate_ioctl(inode,file,cmd,arg,vivi_do_ioctl); | |
1221 | } | |
1222 | ||
1223 | if (debug) { | |
1224 | if (ret<0) { | |
1225 | v4l_print_ioctl("vivi(err)", cmd); | |
1226 | dprintk(1,"errcode=%d\n",ret); | |
1227 | } else if (_IOC_DIR(cmd) & _IOC_READ) | |
1228 | v4l_printk_ioctl_arg("vivi(r)",cmd, arg); | |
1229 | } | |
1230 | ||
1231 | return ret; | |
1232 | } | |
1233 | ||
1234 | static int vivi_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) | |
1235 | { | |
1236 | return video_usercopy(inode, file, cmd, arg, vivi_do_ioctl); | |
1237 | } | |
1238 | ||
1239 | /* ------------------------------------------------------------------ | |
1240 | File operations for the device | |
1241 | ------------------------------------------------------------------*/ | |
1242 | ||
1243 | #define line_buf_size(norm) (norm_maxw(norm)*(format.depth+7)/8) | |
1244 | ||
1245 | static int vivi_open(struct inode *inode, struct file *file) | |
1246 | { | |
1247 | int minor = iminor(inode); | |
1248 | struct vivi_dev *h,*dev = NULL; | |
1249 | struct vivi_fh *fh; | |
1250 | struct list_head *list; | |
1251 | enum v4l2_buf_type type = 0; | |
1252 | int i; | |
1253 | ||
1254 | printk(KERN_DEBUG "vivi: open called (minor=%d)\n",minor); | |
1255 | ||
1256 | list_for_each(list,&vivi_devlist) { | |
1257 | h = list_entry(list, struct vivi_dev, vivi_devlist); | |
1258 | if (h->video_dev.minor == minor) { | |
1259 | dev = h; | |
1260 | type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1261 | } | |
1262 | } | |
1263 | if (NULL == dev) | |
1264 | return -ENODEV; | |
1265 | ||
1266 | ||
1267 | /* If more than one user, mutex should be added */ | |
1268 | dev->users++; | |
1269 | ||
1270 | dprintk(1,"open minor=%d type=%s users=%d\n", | |
1271 | minor,v4l2_type_names[type],dev->users); | |
1272 | ||
1273 | /* allocate + initialize per filehandle data */ | |
1274 | fh = kzalloc(sizeof(*fh),GFP_KERNEL); | |
1275 | if (NULL == fh) { | |
1276 | dev->users--; | |
1277 | return -ENOMEM; | |
1278 | } | |
1279 | ||
1280 | file->private_data = fh; | |
1281 | fh->dev = dev; | |
1282 | fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1283 | fh->fmt = &format; | |
1284 | fh->width = 640; | |
1285 | fh->height = 480; | |
1286 | ||
1287 | /* Put all controls at a sane state */ | |
1288 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
1289 | qctl_regs[i] =vivi_qctrl[i].default_value; | |
1290 | ||
1291 | dprintk(1,"Open: fh=0x%08lx, dev=0x%08lx, dev->vidq=0x%08lx\n", | |
1292 | (unsigned long)fh,(unsigned long)dev,(unsigned long)&dev->vidq); | |
1293 | dprintk(1,"Open: list_empty queued=%d\n",list_empty(&dev->vidq.queued)); | |
1294 | dprintk(1,"Open: list_empty active=%d\n",list_empty(&dev->vidq.active)); | |
1295 | ||
1296 | /* Resets frame counters */ | |
1297 | dev->h=0; | |
1298 | dev->m=0; | |
1299 | dev->s=0; | |
1300 | dev->us=0; | |
1301 | dev->jiffies=jiffies; | |
1302 | sprintf(dev->timestr,"%02d:%02d:%02d:%03d", | |
1303 | dev->h,dev->m,dev->s,(dev->us+500)/1000); | |
1304 | ||
1305 | videobuf_queue_init(&fh->vb_vidq, &vivi_video_qops, | |
1306 | NULL, NULL, | |
1307 | fh->type, | |
1308 | V4L2_FIELD_INTERLACED, | |
1309 | sizeof(struct vivi_buffer),fh); | |
1310 | ||
1311 | return 0; | |
1312 | } | |
1313 | ||
1314 | static ssize_t | |
1315 | vivi_read(struct file *file, char __user *data, size_t count, loff_t *ppos) | |
1316 | { | |
1317 | struct vivi_fh *fh = file->private_data; | |
1318 | ||
1319 | if (fh->type==V4L2_BUF_TYPE_VIDEO_CAPTURE) { | |
1320 | if (res_locked(fh->dev)) | |
1321 | return -EBUSY; | |
1322 | return videobuf_read_one(&fh->vb_vidq, data, count, ppos, | |
1323 | file->f_flags & O_NONBLOCK); | |
1324 | } | |
1325 | return 0; | |
1326 | } | |
1327 | ||
1328 | static unsigned int | |
1329 | vivi_poll(struct file *file, struct poll_table_struct *wait) | |
1330 | { | |
1331 | struct vivi_fh *fh = file->private_data; | |
1332 | struct vivi_buffer *buf; | |
1333 | ||
1334 | dprintk(1,"%s\n",__FUNCTION__); | |
1335 | ||
1336 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) | |
1337 | return POLLERR; | |
1338 | ||
1339 | if (res_get(fh->dev,fh)) { | |
1340 | dprintk(1,"poll: mmap interface\n"); | |
1341 | /* streaming capture */ | |
1342 | if (list_empty(&fh->vb_vidq.stream)) | |
1343 | return POLLERR; | |
1344 | buf = list_entry(fh->vb_vidq.stream.next,struct vivi_buffer,vb.stream); | |
1345 | } else { | |
1346 | dprintk(1,"poll: read() interface\n"); | |
1347 | /* read() capture */ | |
1348 | buf = (struct vivi_buffer*)fh->vb_vidq.read_buf; | |
1349 | if (NULL == buf) | |
1350 | return POLLERR; | |
1351 | } | |
1352 | poll_wait(file, &buf->vb.done, wait); | |
1353 | if (buf->vb.state == STATE_DONE || | |
1354 | buf->vb.state == STATE_ERROR) | |
1355 | return POLLIN|POLLRDNORM; | |
1356 | return 0; | |
1357 | } | |
1358 | ||
1359 | static int vivi_release(struct inode *inode, struct file *file) | |
1360 | { | |
1361 | struct vivi_fh *fh = file->private_data; | |
1362 | struct vivi_dev *dev = fh->dev; | |
1363 | struct vivi_dmaqueue *vidq = &dev->vidq; | |
1364 | ||
1365 | int minor = iminor(inode); | |
1366 | ||
1367 | vivi_stop_thread(vidq); | |
1368 | videobuf_mmap_free(&fh->vb_vidq); | |
1369 | ||
1370 | kfree (fh); | |
1371 | ||
1372 | dev->users--; | |
1373 | ||
1374 | printk(KERN_DEBUG "vivi: close called (minor=%d, users=%d)\n",minor,dev->users); | |
1375 | ||
1376 | return 0; | |
1377 | } | |
1378 | ||
1379 | static int | |
1380 | vivi_mmap(struct file *file, struct vm_area_struct * vma) | |
1381 | { | |
1382 | struct vivi_fh *fh = file->private_data; | |
1383 | int ret; | |
1384 | ||
1385 | dprintk (1,"mmap called, vma=0x%08lx\n",(unsigned long)vma); | |
1386 | ||
1387 | ret=videobuf_mmap_mapper(&fh->vb_vidq, vma); | |
1388 | ||
1389 | dprintk (1,"vma start=0x%08lx, size=%ld, ret=%d\n", | |
1390 | (unsigned long)vma->vm_start, | |
1391 | (unsigned long)vma->vm_end-(unsigned long)vma->vm_start, | |
1392 | ret); | |
1393 | ||
1394 | return ret; | |
1395 | } | |
1396 | ||
1397 | static struct file_operations vivi_fops = { | |
1398 | .owner = THIS_MODULE, | |
1399 | .open = vivi_open, | |
1400 | .release = vivi_release, | |
1401 | .read = vivi_read, | |
1402 | .poll = vivi_poll, | |
1403 | .ioctl = vivi_ioctl, | |
1404 | .mmap = vivi_mmap, | |
1405 | .llseek = no_llseek, | |
1406 | }; | |
1407 | ||
1408 | static struct video_device vivi = { | |
1409 | .name = "VTM Virtual Video Capture Board", | |
1410 | .type = VID_TYPE_CAPTURE, | |
1411 | .hardware = 0, | |
1412 | .fops = &vivi_fops, | |
1413 | .minor = -1, | |
1414 | // .release = video_device_release, | |
1415 | }; | |
1416 | /* ------------------------------------------------------------------ | |
1417 | Initialization and module stuff | |
1418 | ------------------------------------------------------------------*/ | |
1419 | ||
1420 | static int __init vivi_init(void) | |
1421 | { | |
1422 | int ret; | |
1423 | struct vivi_dev *dev; | |
1424 | ||
1425 | dev = kzalloc(sizeof(*dev),GFP_KERNEL); | |
1426 | if (NULL == dev) | |
1427 | return -ENOMEM; | |
1428 | list_add_tail(&dev->vivi_devlist,&vivi_devlist); | |
1429 | ||
1430 | /* init video dma queues */ | |
1431 | INIT_LIST_HEAD(&dev->vidq.active); | |
1432 | INIT_LIST_HEAD(&dev->vidq.queued); | |
1433 | ||
1434 | /* initialize locks */ | |
1435 | init_MUTEX(&dev->lock); | |
1436 | ||
1437 | dev->vidq.timeout.function = vivi_vid_timeout; | |
1438 | dev->vidq.timeout.data = (unsigned long)dev; | |
1439 | init_timer(&dev->vidq.timeout); | |
1440 | ||
1441 | ret = video_register_device(&vivi, VFL_TYPE_GRABBER, video_nr); | |
1442 | printk(KERN_INFO "Video Technology Magazine Virtual Video Capture Board (Load status: %d)\n", ret); | |
1443 | return ret; | |
1444 | } | |
1445 | ||
1446 | static void __exit vivi_exit(void) | |
1447 | { | |
1448 | struct vivi_dev *h; | |
1449 | struct list_head *list; | |
1450 | ||
1451 | list_for_each(list,&vivi_devlist) { | |
1452 | h = list_entry(list, struct vivi_dev, vivi_devlist); | |
1453 | kfree (h); | |
1454 | } | |
1455 | video_unregister_device(&vivi); | |
1456 | } | |
1457 | ||
1458 | module_init(vivi_init); | |
1459 | module_exit(vivi_exit); |