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 | ||
1e6dd65e MCC |
47 | #include "font.h" |
48 | ||
1e6dd65e MCC |
49 | #define VIVI_MAJOR_VERSION 0 |
50 | #define VIVI_MINOR_VERSION 4 | |
51 | #define VIVI_RELEASE 0 | |
543323bc MCC |
52 | #define VIVI_VERSION \ |
53 | KERNEL_VERSION(VIVI_MAJOR_VERSION, VIVI_MINOR_VERSION, VIVI_RELEASE) | |
1e6dd65e | 54 | |
c820cc45 MCC |
55 | /* Declare static vars that will be used as parameters */ |
56 | static unsigned int vid_limit = 16; /* Video memory limit, in Mb */ | |
c820cc45 | 57 | static int video_nr = -1; /* /dev/videoN, -1 for autodetect */ |
55712ff7 | 58 | static int n_devs = 1; /* Number of virtual devices */ |
1e6dd65e MCC |
59 | |
60 | /* supported controls */ | |
61 | static struct v4l2_queryctrl vivi_qctrl[] = { | |
62 | { | |
63 | .id = V4L2_CID_AUDIO_VOLUME, | |
64 | .name = "Volume", | |
65 | .minimum = 0, | |
66 | .maximum = 65535, | |
67 | .step = 65535/100, | |
68 | .default_value = 65535, | |
69 | .flags = 0, | |
70 | .type = V4L2_CTRL_TYPE_INTEGER, | |
543323bc | 71 | }, { |
1e6dd65e MCC |
72 | .id = V4L2_CID_BRIGHTNESS, |
73 | .type = V4L2_CTRL_TYPE_INTEGER, | |
74 | .name = "Brightness", | |
75 | .minimum = 0, | |
76 | .maximum = 255, | |
77 | .step = 1, | |
78 | .default_value = 127, | |
79 | .flags = 0, | |
80 | }, { | |
81 | .id = V4L2_CID_CONTRAST, | |
82 | .type = V4L2_CTRL_TYPE_INTEGER, | |
83 | .name = "Contrast", | |
84 | .minimum = 0, | |
85 | .maximum = 255, | |
86 | .step = 0x1, | |
87 | .default_value = 0x10, | |
88 | .flags = 0, | |
89 | }, { | |
90 | .id = V4L2_CID_SATURATION, | |
91 | .type = V4L2_CTRL_TYPE_INTEGER, | |
92 | .name = "Saturation", | |
93 | .minimum = 0, | |
94 | .maximum = 255, | |
95 | .step = 0x1, | |
96 | .default_value = 127, | |
97 | .flags = 0, | |
98 | }, { | |
99 | .id = V4L2_CID_HUE, | |
100 | .type = V4L2_CTRL_TYPE_INTEGER, | |
101 | .name = "Hue", | |
102 | .minimum = -128, | |
103 | .maximum = 127, | |
104 | .step = 0x1, | |
105 | .default_value = 0, | |
106 | .flags = 0, | |
107 | } | |
108 | }; | |
109 | ||
110 | static int qctl_regs[ARRAY_SIZE(vivi_qctrl)]; | |
111 | ||
6c2f9901 | 112 | #define dprintk(dev, level, fmt, arg...) \ |
c820cc45 | 113 | do { \ |
6c2f9901 | 114 | if (dev->vfd->debug >= (level)) \ |
c820cc45 | 115 | printk(KERN_DEBUG "vivi: " fmt , ## arg); \ |
1e6dd65e MCC |
116 | } while (0) |
117 | ||
118 | /* ------------------------------------------------------------------ | |
119 | Basic structures | |
120 | ------------------------------------------------------------------*/ | |
121 | ||
122 | struct vivi_fmt { | |
123 | char *name; | |
124 | u32 fourcc; /* v4l2 format id */ | |
125 | int depth; | |
126 | }; | |
127 | ||
128 | static struct vivi_fmt format = { | |
129 | .name = "4:2:2, packed, YUYV", | |
130 | .fourcc = V4L2_PIX_FMT_YUYV, | |
131 | .depth = 16, | |
132 | }; | |
133 | ||
134 | struct sg_to_addr { | |
135 | int pos; | |
136 | struct scatterlist *sg; | |
137 | }; | |
138 | ||
139 | /* buffer for one video frame */ | |
140 | struct vivi_buffer { | |
141 | /* common v4l buffer stuff -- must be first */ | |
142 | struct videobuf_buffer vb; | |
143 | ||
144 | struct vivi_fmt *fmt; | |
1e6dd65e MCC |
145 | }; |
146 | ||
147 | struct vivi_dmaqueue { | |
148 | struct list_head active; | |
149 | struct list_head queued; | |
150 | struct timer_list timeout; | |
151 | ||
152 | /* thread for generating video stream*/ | |
153 | struct task_struct *kthread; | |
154 | wait_queue_head_t wq; | |
155 | /* Counters to control fps rate */ | |
156 | int frame; | |
157 | int ini_jiffies; | |
158 | }; | |
159 | ||
160 | static LIST_HEAD(vivi_devlist); | |
161 | ||
162 | struct vivi_dev { | |
163 | struct list_head vivi_devlist; | |
164 | ||
51b54029 | 165 | struct mutex lock; |
55862ac9 | 166 | spinlock_t slock; |
1e6dd65e MCC |
167 | |
168 | int users; | |
169 | ||
170 | /* various device info */ | |
f905c442 | 171 | struct video_device *vfd; |
1e6dd65e MCC |
172 | |
173 | struct vivi_dmaqueue vidq; | |
174 | ||
175 | /* Several counters */ | |
dfd8c04e MCC |
176 | int h, m, s, ms; |
177 | unsigned long jiffies; | |
1e6dd65e | 178 | char timestr[13]; |
025341d4 MCC |
179 | |
180 | int mv_count; /* Controls bars movement */ | |
1e6dd65e MCC |
181 | }; |
182 | ||
183 | struct vivi_fh { | |
184 | struct vivi_dev *dev; | |
185 | ||
186 | /* video capture */ | |
187 | struct vivi_fmt *fmt; | |
543323bc | 188 | unsigned int width, height; |
1e6dd65e MCC |
189 | struct videobuf_queue vb_vidq; |
190 | ||
191 | enum v4l2_buf_type type; | |
192 | }; | |
193 | ||
194 | /* ------------------------------------------------------------------ | |
195 | DMA and thread functions | |
196 | ------------------------------------------------------------------*/ | |
197 | ||
198 | /* Bars and Colors should match positions */ | |
199 | ||
200 | enum colors { | |
201 | WHITE, | |
202 | AMBAR, | |
203 | CYAN, | |
204 | GREEN, | |
205 | MAGENTA, | |
206 | RED, | |
543323bc MCC |
207 | BLUE, |
208 | BLACK, | |
1e6dd65e MCC |
209 | }; |
210 | ||
211 | static u8 bars[8][3] = { | |
212 | /* R G B */ | |
543323bc MCC |
213 | {204, 204, 204}, /* white */ |
214 | {208, 208, 0}, /* ambar */ | |
215 | { 0, 206, 206}, /* cyan */ | |
216 | { 0, 239, 0}, /* green */ | |
217 | {239, 0, 239}, /* magenta */ | |
218 | {205, 0, 0}, /* red */ | |
219 | { 0, 0, 255}, /* blue */ | |
220 | { 0, 0, 0}, /* black */ | |
1e6dd65e MCC |
221 | }; |
222 | ||
543323bc MCC |
223 | #define TO_Y(r, g, b) \ |
224 | (((16829 * r + 33039 * g + 6416 * b + 32768) >> 16) + 16) | |
1e6dd65e | 225 | /* RGB to V(Cr) Color transform */ |
543323bc MCC |
226 | #define TO_V(r, g, b) \ |
227 | (((28784 * r - 24103 * g - 4681 * b + 32768) >> 16) + 128) | |
1e6dd65e | 228 | /* RGB to U(Cb) Color transform */ |
543323bc MCC |
229 | #define TO_U(r, g, b) \ |
230 | (((-9714 * r - 19070 * g + 28784 * b + 32768) >> 16) + 128) | |
1e6dd65e MCC |
231 | |
232 | #define TSTAMP_MIN_Y 24 | |
233 | #define TSTAMP_MAX_Y TSTAMP_MIN_Y+15 | |
234 | #define TSTAMP_MIN_X 64 | |
235 | ||
543323bc MCC |
236 | static void gen_line(char *basep, int inipos, int wmax, |
237 | int hmax, int line, int count, char *timestr) | |
1e6dd65e | 238 | { |
543323bc MCC |
239 | int w, i, j, y; |
240 | int pos = inipos; | |
241 | char *p, *s; | |
242 | u8 chr, r, g, b, color; | |
1e6dd65e MCC |
243 | |
244 | /* We will just duplicate the second pixel at the packet */ | |
543323bc | 245 | wmax /= 2; |
1e6dd65e MCC |
246 | |
247 | /* Generate a standard color bar pattern */ | |
543323bc MCC |
248 | for (w = 0; w < wmax; w++) { |
249 | int colorpos = ((w + count) * 8/(wmax + 1)) % 8; | |
250 | r = bars[colorpos][0]; | |
251 | g = bars[colorpos][1]; | |
252 | b = bars[colorpos][2]; | |
1e6dd65e | 253 | |
543323bc MCC |
254 | for (color = 0; color < 4; color++) { |
255 | p = basep + pos; | |
1e6dd65e MCC |
256 | |
257 | switch (color) { | |
543323bc MCC |
258 | case 0: |
259 | case 2: | |
260 | *p = TO_Y(r, g, b); /* Luma */ | |
261 | break; | |
262 | case 1: | |
263 | *p = TO_U(r, g, b); /* Cb */ | |
264 | break; | |
265 | case 3: | |
266 | *p = TO_V(r, g, b); /* Cr */ | |
267 | break; | |
1e6dd65e MCC |
268 | } |
269 | pos++; | |
270 | } | |
271 | } | |
272 | ||
273 | /* Checks if it is possible to show timestamp */ | |
543323bc | 274 | if (TSTAMP_MAX_Y >= hmax) |
1e6dd65e | 275 | goto end; |
543323bc | 276 | if (TSTAMP_MIN_X + strlen(timestr) >= wmax) |
1e6dd65e MCC |
277 | goto end; |
278 | ||
279 | /* Print stream time */ | |
543323bc MCC |
280 | if (line >= TSTAMP_MIN_Y && line <= TSTAMP_MAX_Y) { |
281 | j = TSTAMP_MIN_X; | |
282 | for (s = timestr; *s; s++) { | |
283 | chr = rom8x16_bits[(*s-0x30)*16+line-TSTAMP_MIN_Y]; | |
284 | for (i = 0; i < 7; i++) { | |
285 | if (chr & 1 << (7 - i)) { | |
286 | /* Font color*/ | |
287 | r = 0; | |
288 | g = 198; | |
289 | b = 0; | |
290 | } else { | |
291 | /* Background color */ | |
292 | r = bars[BLACK][0]; | |
293 | g = bars[BLACK][1]; | |
294 | b = bars[BLACK][2]; | |
1e6dd65e MCC |
295 | } |
296 | ||
543323bc MCC |
297 | pos = inipos + j * 2; |
298 | for (color = 0; color < 4; color++) { | |
299 | p = basep + pos; | |
1e6dd65e | 300 | |
543323bc | 301 | y = TO_Y(r, g, b); |
1e6dd65e MCC |
302 | |
303 | switch (color) { | |
543323bc MCC |
304 | case 0: |
305 | case 2: | |
306 | *p = TO_Y(r, g, b); /* Luma */ | |
307 | break; | |
308 | case 1: | |
309 | *p = TO_U(r, g, b); /* Cb */ | |
310 | break; | |
311 | case 3: | |
312 | *p = TO_V(r, g, b); /* Cr */ | |
313 | break; | |
1e6dd65e MCC |
314 | } |
315 | pos++; | |
316 | } | |
317 | j++; | |
318 | } | |
319 | } | |
320 | } | |
321 | ||
1e6dd65e | 322 | end: |
b50e7fe9 | 323 | return; |
1e6dd65e | 324 | } |
543323bc | 325 | static void vivi_fillbuff(struct vivi_dev *dev, struct vivi_buffer *buf) |
1e6dd65e | 326 | { |
543323bc | 327 | int h , pos = 0; |
1e6dd65e MCC |
328 | int hmax = buf->vb.height; |
329 | int wmax = buf->vb.width; | |
1e6dd65e | 330 | struct timeval ts; |
543323bc MCC |
331 | char *tmpbuf = kmalloc(wmax * 2, GFP_KERNEL); |
332 | void *vbuf = videobuf_to_vmalloc(&buf->vb); | |
b50e7fe9 | 333 | |
5a037706 MCC |
334 | if (!tmpbuf) |
335 | return; | |
1e6dd65e | 336 | |
543323bc | 337 | for (h = 0; h < hmax; h++) { |
025341d4 | 338 | gen_line(tmpbuf, 0, wmax, hmax, h, dev->mv_count, |
3bef5e4a | 339 | dev->timestr); |
5a037706 | 340 | /* FIXME: replacing to __copy_to_user */ |
543323bc | 341 | if (copy_to_user(vbuf + pos, tmpbuf, wmax * 2) != 0) |
6c2f9901 | 342 | dprintk(dev, 2, "vivifill copy_to_user failed.\n"); |
1e6dd65e MCC |
343 | pos += wmax*2; |
344 | } | |
345 | ||
025341d4 | 346 | dev->mv_count++; |
3bef5e4a | 347 | |
5a037706 MCC |
348 | kfree(tmpbuf); |
349 | ||
1e6dd65e MCC |
350 | /* Updates stream time */ |
351 | ||
dfd8c04e | 352 | dev->ms += jiffies_to_msecs(jiffies-dev->jiffies); |
543323bc | 353 | dev->jiffies = jiffies; |
dfd8c04e MCC |
354 | if (dev->ms >= 1000) { |
355 | dev->ms -= 1000; | |
1e6dd65e | 356 | dev->s++; |
543323bc MCC |
357 | if (dev->s >= 60) { |
358 | dev->s -= 60; | |
1e6dd65e | 359 | dev->m++; |
543323bc MCC |
360 | if (dev->m > 60) { |
361 | dev->m -= 60; | |
1e6dd65e | 362 | dev->h++; |
543323bc MCC |
363 | if (dev->h > 24) |
364 | dev->h -= 24; | |
1e6dd65e MCC |
365 | } |
366 | } | |
367 | } | |
543323bc | 368 | sprintf(dev->timestr, "%02d:%02d:%02d:%03d", |
dfd8c04e | 369 | dev->h, dev->m, dev->s, dev->ms); |
1e6dd65e | 370 | |
6c2f9901 MCC |
371 | dprintk(dev, 2, "vivifill at %s: Buffer 0x%08lx size= %d\n", |
372 | dev->timestr, (unsigned long)tmpbuf, pos); | |
1e6dd65e MCC |
373 | |
374 | /* Advice that buffer was filled */ | |
0fc0686e | 375 | buf->vb.state = VIDEOBUF_DONE; |
1e6dd65e MCC |
376 | buf->vb.field_count++; |
377 | do_gettimeofday(&ts); | |
378 | buf->vb.ts = ts; | |
379 | ||
380 | list_del(&buf->vb.queue); | |
381 | wake_up(&buf->vb.done); | |
382 | } | |
383 | ||
384 | static int restart_video_queue(struct vivi_dmaqueue *dma_q); | |
385 | ||
386 | static void vivi_thread_tick(struct vivi_dmaqueue *dma_q) | |
387 | { | |
388 | struct vivi_buffer *buf; | |
543323bc | 389 | struct vivi_dev *dev = container_of(dma_q, struct vivi_dev, vidq); |
1e6dd65e MCC |
390 | |
391 | int bc; | |
392 | ||
55862ac9 | 393 | spin_lock(&dev->slock); |
1e6dd65e MCC |
394 | /* Announces videobuf that all went ok */ |
395 | for (bc = 0;; bc++) { | |
396 | if (list_empty(&dma_q->active)) { | |
6c2f9901 | 397 | dprintk(dev, 1, "No active queue to serve\n"); |
1e6dd65e MCC |
398 | break; |
399 | } | |
400 | ||
401 | buf = list_entry(dma_q->active.next, | |
402 | struct vivi_buffer, vb.queue); | |
403 | ||
404 | /* Nobody is waiting something to be done, just return */ | |
405 | if (!waitqueue_active(&buf->vb.done)) { | |
406 | mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); | |
55862ac9 | 407 | spin_unlock(&dev->slock); |
1e6dd65e MCC |
408 | return; |
409 | } | |
410 | ||
411 | do_gettimeofday(&buf->vb.ts); | |
6c2f9901 | 412 | dprintk(dev, 2, "[%p/%d] wakeup\n", buf, buf->vb. i); |
1e6dd65e MCC |
413 | |
414 | /* Fill buffer */ | |
543323bc | 415 | vivi_fillbuff(dev, buf); |
0b600512 MCC |
416 | |
417 | if (list_empty(&dma_q->active)) { | |
418 | del_timer(&dma_q->timeout); | |
419 | } else { | |
543323bc | 420 | mod_timer(&dma_q->timeout, jiffies + BUFFER_TIMEOUT); |
0b600512 | 421 | } |
1e6dd65e MCC |
422 | } |
423 | if (bc != 1) | |
6c2f9901 | 424 | dprintk(dev, 1, "%s: %d buffers handled (should be 1)\n", |
543323bc | 425 | __FUNCTION__, bc); |
55862ac9 | 426 | spin_unlock(&dev->slock); |
1e6dd65e MCC |
427 | } |
428 | ||
6594ad82 MCC |
429 | #define frames_to_ms(frames) \ |
430 | ((frames * WAKE_NUMERATOR * 1000) / WAKE_DENOMINATOR) | |
431 | ||
972c3517 | 432 | static void vivi_sleep(struct vivi_dmaqueue *dma_q) |
1e6dd65e | 433 | { |
6c2f9901 | 434 | struct vivi_dev *dev = container_of(dma_q, struct vivi_dev, vidq); |
6594ad82 | 435 | int timeout, running_time; |
1e6dd65e MCC |
436 | DECLARE_WAITQUEUE(wait, current); |
437 | ||
6c2f9901 MCC |
438 | dprintk(dev, 1, "%s dma_q=0x%08lx\n", __FUNCTION__, |
439 | (unsigned long)dma_q); | |
1e6dd65e MCC |
440 | |
441 | add_wait_queue(&dma_q->wq, &wait); | |
6594ad82 MCC |
442 | if (kthread_should_stop()) |
443 | goto stop_task; | |
444 | ||
445 | running_time = jiffies - dma_q->ini_jiffies; | |
446 | dma_q->frame++; | |
447 | ||
448 | /* Calculate time to wake up */ | |
449 | timeout = msecs_to_jiffies(frames_to_ms(dma_q->frame)) - running_time; | |
450 | ||
451 | if (timeout > msecs_to_jiffies(frames_to_ms(2)) || timeout <= 0) { | |
452 | int old = dma_q->frame; | |
453 | int nframes; | |
454 | ||
455 | dma_q->frame = (jiffies_to_msecs(running_time) / | |
456 | frames_to_ms(1)) + 1; | |
457 | ||
458 | timeout = msecs_to_jiffies(frames_to_ms(dma_q->frame)) | |
459 | - running_time; | |
460 | ||
461 | if (unlikely (timeout <= 0)) | |
462 | timeout = 1; | |
463 | ||
464 | nframes = (dma_q->frame > old)? | |
465 | dma_q->frame - old : old - dma_q->frame; | |
466 | ||
467 | dprintk(dev, 1, "%ld: %s %d frames. " | |
468 | "Current frame is %d. Will sleep for %d jiffies\n", | |
469 | jiffies, | |
470 | (dma_q->frame > old)? "Underrun, losed" : "Overrun of", | |
471 | nframes, dma_q->frame, timeout); | |
472 | } else | |
473 | dprintk(dev, 1, "will sleep for %d jiffies\n", timeout); | |
474 | ||
475 | vivi_thread_tick(dma_q); | |
476 | ||
477 | schedule_timeout_interruptible(timeout); | |
1e6dd65e | 478 | |
6594ad82 | 479 | stop_task: |
1e6dd65e MCC |
480 | remove_wait_queue(&dma_q->wq, &wait); |
481 | try_to_freeze(); | |
482 | } | |
483 | ||
972c3517 | 484 | static int vivi_thread(void *data) |
1e6dd65e | 485 | { |
543323bc | 486 | struct vivi_dmaqueue *dma_q = data; |
6c2f9901 | 487 | struct vivi_dev *dev = container_of(dma_q, struct vivi_dev, vidq); |
1e6dd65e | 488 | |
6c2f9901 | 489 | dprintk(dev, 1, "thread started\n"); |
1e6dd65e | 490 | |
0b600512 | 491 | mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); |
83144186 | 492 | set_freezable(); |
0b600512 | 493 | |
1e6dd65e MCC |
494 | for (;;) { |
495 | vivi_sleep(dma_q); | |
496 | ||
497 | if (kthread_should_stop()) | |
498 | break; | |
499 | } | |
6c2f9901 | 500 | dprintk(dev, 1, "thread: exit\n"); |
1e6dd65e MCC |
501 | return 0; |
502 | } | |
503 | ||
972c3517 | 504 | static int vivi_start_thread(struct vivi_dmaqueue *dma_q) |
1e6dd65e | 505 | { |
6c2f9901 MCC |
506 | struct vivi_dev *dev = container_of(dma_q, struct vivi_dev, vidq); |
507 | ||
543323bc MCC |
508 | dma_q->frame = 0; |
509 | dma_q->ini_jiffies = jiffies; | |
1e6dd65e | 510 | |
6c2f9901 | 511 | dprintk(dev, 1, "%s\n", __FUNCTION__); |
1e6dd65e MCC |
512 | |
513 | dma_q->kthread = kthread_run(vivi_thread, dma_q, "vivi"); | |
514 | ||
054afee4 | 515 | if (IS_ERR(dma_q->kthread)) { |
1e6dd65e | 516 | printk(KERN_ERR "vivi: kernel_thread() failed\n"); |
054afee4 | 517 | return PTR_ERR(dma_q->kthread); |
1e6dd65e | 518 | } |
0b600512 MCC |
519 | /* Wakes thread */ |
520 | wake_up_interruptible(&dma_q->wq); | |
521 | ||
6c2f9901 | 522 | dprintk(dev, 1, "returning from %s\n", __FUNCTION__); |
1e6dd65e MCC |
523 | return 0; |
524 | } | |
525 | ||
972c3517 | 526 | static void vivi_stop_thread(struct vivi_dmaqueue *dma_q) |
1e6dd65e | 527 | { |
6c2f9901 MCC |
528 | struct vivi_dev *dev = container_of(dma_q, struct vivi_dev, vidq); |
529 | ||
530 | dprintk(dev, 1, "%s\n", __FUNCTION__); | |
1e6dd65e MCC |
531 | /* shutdown control thread */ |
532 | if (dma_q->kthread) { | |
533 | kthread_stop(dma_q->kthread); | |
543323bc | 534 | dma_q->kthread = NULL; |
1e6dd65e MCC |
535 | } |
536 | } | |
537 | ||
538 | static int restart_video_queue(struct vivi_dmaqueue *dma_q) | |
539 | { | |
6c2f9901 | 540 | struct vivi_dev *dev = container_of(dma_q, struct vivi_dev, vidq); |
1e6dd65e | 541 | struct vivi_buffer *buf, *prev; |
1e6dd65e | 542 | |
6c2f9901 MCC |
543 | dprintk(dev, 1, "%s dma_q=0x%08lx\n", __FUNCTION__, |
544 | (unsigned long)dma_q); | |
1e6dd65e MCC |
545 | |
546 | if (!list_empty(&dma_q->active)) { | |
543323bc MCC |
547 | buf = list_entry(dma_q->active.next, |
548 | struct vivi_buffer, vb.queue); | |
6c2f9901 | 549 | dprintk(dev, 2, "restart_queue [%p/%d]: restart dma\n", |
1e6dd65e MCC |
550 | buf, buf->vb.i); |
551 | ||
6c2f9901 | 552 | dprintk(dev, 1, "Restarting video dma\n"); |
1e6dd65e | 553 | vivi_stop_thread(dma_q); |
1e6dd65e MCC |
554 | |
555 | /* cancel all outstanding capture / vbi requests */ | |
a991f44b | 556 | list_for_each_entry_safe(buf, prev, &dma_q->active, vb.queue) { |
1e6dd65e | 557 | list_del(&buf->vb.queue); |
0fc0686e | 558 | buf->vb.state = VIDEOBUF_ERROR; |
1e6dd65e MCC |
559 | wake_up(&buf->vb.done); |
560 | } | |
561 | mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); | |
562 | ||
563 | return 0; | |
564 | } | |
565 | ||
566 | prev = NULL; | |
567 | for (;;) { | |
568 | if (list_empty(&dma_q->queued)) | |
569 | return 0; | |
543323bc MCC |
570 | buf = list_entry(dma_q->queued.next, |
571 | struct vivi_buffer, vb.queue); | |
1e6dd65e MCC |
572 | if (NULL == prev) { |
573 | list_del(&buf->vb.queue); | |
543323bc | 574 | list_add_tail(&buf->vb.queue, &dma_q->active); |
1e6dd65e | 575 | |
6c2f9901 | 576 | dprintk(dev, 1, "Restarting video dma\n"); |
1e6dd65e MCC |
577 | vivi_stop_thread(dma_q); |
578 | vivi_start_thread(dma_q); | |
579 | ||
0fc0686e | 580 | buf->vb.state = VIDEOBUF_ACTIVE; |
1e6dd65e | 581 | mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); |
6c2f9901 MCC |
582 | dprintk(dev, 2, |
583 | "[%p/%d] restart_queue - first active\n", | |
543323bc | 584 | buf, buf->vb.i); |
1e6dd65e MCC |
585 | |
586 | } else if (prev->vb.width == buf->vb.width && | |
587 | prev->vb.height == buf->vb.height && | |
588 | prev->fmt == buf->fmt) { | |
589 | list_del(&buf->vb.queue); | |
543323bc | 590 | list_add_tail(&buf->vb.queue, &dma_q->active); |
0fc0686e | 591 | buf->vb.state = VIDEOBUF_ACTIVE; |
6c2f9901 MCC |
592 | dprintk(dev, 2, |
593 | "[%p/%d] restart_queue - move to active\n", | |
543323bc | 594 | buf, buf->vb.i); |
1e6dd65e MCC |
595 | } else { |
596 | return 0; | |
597 | } | |
598 | prev = buf; | |
599 | } | |
600 | } | |
601 | ||
602 | static void vivi_vid_timeout(unsigned long data) | |
603 | { | |
543323bc | 604 | struct vivi_dev *dev = (struct vivi_dev *)data; |
1e6dd65e MCC |
605 | struct vivi_dmaqueue *vidq = &dev->vidq; |
606 | struct vivi_buffer *buf; | |
607 | ||
55862ac9 MCC |
608 | spin_lock(&dev->slock); |
609 | ||
1e6dd65e | 610 | while (!list_empty(&vidq->active)) { |
543323bc MCC |
611 | buf = list_entry(vidq->active.next, |
612 | struct vivi_buffer, vb.queue); | |
1e6dd65e | 613 | list_del(&buf->vb.queue); |
0fc0686e | 614 | buf->vb.state = VIDEOBUF_ERROR; |
1e6dd65e | 615 | wake_up(&buf->vb.done); |
543323bc | 616 | printk(KERN_INFO "vivi/0: [%p/%d] timeout\n", buf, buf->vb.i); |
1e6dd65e | 617 | } |
1e6dd65e | 618 | restart_video_queue(vidq); |
55862ac9 MCC |
619 | |
620 | spin_unlock(&dev->slock); | |
1e6dd65e MCC |
621 | } |
622 | ||
623 | /* ------------------------------------------------------------------ | |
624 | Videobuf operations | |
625 | ------------------------------------------------------------------*/ | |
626 | static int | |
627 | buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) | |
628 | { | |
6c2f9901 MCC |
629 | struct vivi_fh *fh = vq->priv_data; |
630 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
631 | |
632 | *size = fh->width*fh->height*2; | |
633 | ||
634 | if (0 == *count) | |
635 | *count = 32; | |
6bb2790f | 636 | |
1e6dd65e MCC |
637 | while (*size * *count > vid_limit * 1024 * 1024) |
638 | (*count)--; | |
6bb2790f | 639 | |
6c2f9901 MCC |
640 | dprintk(dev, 1, "%s, count=%d, size=%d\n", __FUNCTION__, |
641 | *count, *size); | |
6bb2790f | 642 | |
1e6dd65e MCC |
643 | return 0; |
644 | } | |
645 | ||
972c3517 | 646 | static void free_buffer(struct videobuf_queue *vq, struct vivi_buffer *buf) |
1e6dd65e | 647 | { |
6c2f9901 MCC |
648 | struct vivi_fh *fh = vq->priv_data; |
649 | struct vivi_dev *dev = fh->dev; | |
650 | ||
651 | dprintk(dev, 1, "%s\n", __FUNCTION__); | |
1e6dd65e MCC |
652 | |
653 | if (in_interrupt()) | |
654 | BUG(); | |
655 | ||
543323bc | 656 | videobuf_waiton(&buf->vb, 0, 0); |
5a037706 | 657 | videobuf_vmalloc_free(&buf->vb); |
0fc0686e | 658 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
1e6dd65e MCC |
659 | } |
660 | ||
661 | #define norm_maxw() 1024 | |
662 | #define norm_maxh() 768 | |
663 | static int | |
664 | buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, | |
665 | enum v4l2_field field) | |
666 | { | |
667 | struct vivi_fh *fh = vq->priv_data; | |
6c2f9901 | 668 | struct vivi_dev *dev = fh->dev; |
543323bc | 669 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
1e6dd65e MCC |
670 | int rc, init_buffer = 0; |
671 | ||
6c2f9901 | 672 | dprintk(dev, 1, "%s, field=%d\n", __FUNCTION__, field); |
1e6dd65e MCC |
673 | |
674 | BUG_ON(NULL == fh->fmt); | |
675 | if (fh->width < 48 || fh->width > norm_maxw() || | |
676 | fh->height < 32 || fh->height > norm_maxh()) | |
677 | return -EINVAL; | |
678 | buf->vb.size = fh->width*fh->height*2; | |
679 | if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) | |
680 | return -EINVAL; | |
681 | ||
682 | if (buf->fmt != fh->fmt || | |
683 | buf->vb.width != fh->width || | |
684 | buf->vb.height != fh->height || | |
685 | buf->vb.field != field) { | |
686 | buf->fmt = fh->fmt; | |
687 | buf->vb.width = fh->width; | |
688 | buf->vb.height = fh->height; | |
689 | buf->vb.field = field; | |
690 | init_buffer = 1; | |
691 | } | |
692 | ||
0fc0686e | 693 | if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { |
543323bc MCC |
694 | rc = videobuf_iolock(vq, &buf->vb, NULL); |
695 | if (rc < 0) | |
1e6dd65e MCC |
696 | goto fail; |
697 | } | |
698 | ||
0fc0686e | 699 | buf->vb.state = VIDEOBUF_PREPARED; |
1e6dd65e | 700 | |
1e6dd65e MCC |
701 | return 0; |
702 | ||
703 | fail: | |
543323bc | 704 | free_buffer(vq, buf); |
1e6dd65e MCC |
705 | return rc; |
706 | } | |
707 | ||
708 | static void | |
709 | buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) | |
710 | { | |
543323bc MCC |
711 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
712 | struct vivi_fh *fh = vq->priv_data; | |
713 | struct vivi_dev *dev = fh->dev; | |
714 | struct vivi_dmaqueue *vidq = &dev->vidq; | |
1e6dd65e MCC |
715 | struct vivi_buffer *prev; |
716 | ||
717 | if (!list_empty(&vidq->queued)) { | |
6c2f9901 | 718 | dprintk(dev, 1, "adding vb queue=0x%08lx\n", |
543323bc MCC |
719 | (unsigned long)&buf->vb.queue); |
720 | list_add_tail(&buf->vb.queue, &vidq->queued); | |
0fc0686e | 721 | buf->vb.state = VIDEOBUF_QUEUED; |
6c2f9901 | 722 | dprintk(dev, 2, "[%p/%d] buffer_queue - append to queued\n", |
1e6dd65e MCC |
723 | buf, buf->vb.i); |
724 | } else if (list_empty(&vidq->active)) { | |
543323bc | 725 | list_add_tail(&buf->vb.queue, &vidq->active); |
1e6dd65e | 726 | |
0fc0686e | 727 | buf->vb.state = VIDEOBUF_ACTIVE; |
1e6dd65e | 728 | mod_timer(&vidq->timeout, jiffies+BUFFER_TIMEOUT); |
6c2f9901 | 729 | dprintk(dev, 2, "[%p/%d] buffer_queue - first active\n", |
1e6dd65e MCC |
730 | buf, buf->vb.i); |
731 | ||
732 | vivi_start_thread(vidq); | |
733 | } else { | |
543323bc MCC |
734 | prev = list_entry(vidq->active.prev, |
735 | struct vivi_buffer, vb.queue); | |
1e6dd65e MCC |
736 | if (prev->vb.width == buf->vb.width && |
737 | prev->vb.height == buf->vb.height && | |
738 | prev->fmt == buf->fmt) { | |
543323bc | 739 | list_add_tail(&buf->vb.queue, &vidq->active); |
0fc0686e | 740 | buf->vb.state = VIDEOBUF_ACTIVE; |
6c2f9901 MCC |
741 | dprintk(dev, 2, |
742 | "[%p/%d] buffer_queue - append to active\n", | |
1e6dd65e MCC |
743 | buf, buf->vb.i); |
744 | ||
745 | } else { | |
543323bc | 746 | list_add_tail(&buf->vb.queue, &vidq->queued); |
0fc0686e | 747 | buf->vb.state = VIDEOBUF_QUEUED; |
6c2f9901 MCC |
748 | dprintk(dev, 2, |
749 | "[%p/%d] buffer_queue - first queued\n", | |
1e6dd65e MCC |
750 | buf, buf->vb.i); |
751 | } | |
752 | } | |
753 | } | |
754 | ||
543323bc MCC |
755 | static void buffer_release(struct videobuf_queue *vq, |
756 | struct videobuf_buffer *vb) | |
1e6dd65e | 757 | { |
543323bc | 758 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
1e6dd65e | 759 | struct vivi_fh *fh = vq->priv_data; |
543323bc | 760 | struct vivi_dev *dev = (struct vivi_dev *)fh->dev; |
1e6dd65e MCC |
761 | struct vivi_dmaqueue *vidq = &dev->vidq; |
762 | ||
6c2f9901 | 763 | dprintk(dev, 1, "%s\n", __FUNCTION__); |
1e6dd65e MCC |
764 | |
765 | vivi_stop_thread(vidq); | |
766 | ||
543323bc | 767 | free_buffer(vq, buf); |
1e6dd65e MCC |
768 | } |
769 | ||
1e6dd65e MCC |
770 | static struct videobuf_queue_ops vivi_video_qops = { |
771 | .buf_setup = buffer_setup, | |
772 | .buf_prepare = buffer_prepare, | |
773 | .buf_queue = buffer_queue, | |
774 | .buf_release = buffer_release, | |
1e6dd65e MCC |
775 | }; |
776 | ||
c820cc45 MCC |
777 | /* ------------------------------------------------------------------ |
778 | IOCTL vidioc handling | |
779 | ------------------------------------------------------------------*/ | |
543323bc | 780 | static int vidioc_querycap(struct file *file, void *priv, |
c820cc45 MCC |
781 | struct v4l2_capability *cap) |
782 | { | |
783 | strcpy(cap->driver, "vivi"); | |
784 | strcpy(cap->card, "vivi"); | |
785 | cap->version = VIVI_VERSION; | |
786 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | | |
787 | V4L2_CAP_STREAMING | | |
788 | V4L2_CAP_READWRITE; | |
789 | return 0; | |
790 | } | |
791 | ||
543323bc | 792 | static int vidioc_enum_fmt_cap(struct file *file, void *priv, |
c820cc45 MCC |
793 | struct v4l2_fmtdesc *f) |
794 | { | |
795 | if (f->index > 0) | |
796 | return -EINVAL; | |
797 | ||
543323bc | 798 | strlcpy(f->description, format.name, sizeof(f->description)); |
c820cc45 MCC |
799 | f->pixelformat = format.fourcc; |
800 | return 0; | |
801 | } | |
802 | ||
543323bc | 803 | static int vidioc_g_fmt_cap(struct file *file, void *priv, |
c820cc45 MCC |
804 | struct v4l2_format *f) |
805 | { | |
543323bc | 806 | struct vivi_fh *fh = priv; |
c820cc45 MCC |
807 | |
808 | f->fmt.pix.width = fh->width; | |
809 | f->fmt.pix.height = fh->height; | |
810 | f->fmt.pix.field = fh->vb_vidq.field; | |
811 | f->fmt.pix.pixelformat = fh->fmt->fourcc; | |
812 | f->fmt.pix.bytesperline = | |
813 | (f->fmt.pix.width * fh->fmt->depth) >> 3; | |
814 | f->fmt.pix.sizeimage = | |
815 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
816 | ||
817 | return (0); | |
818 | } | |
819 | ||
543323bc | 820 | static int vidioc_try_fmt_cap(struct file *file, void *priv, |
1e6dd65e MCC |
821 | struct v4l2_format *f) |
822 | { | |
6c2f9901 MCC |
823 | struct vivi_fh *fh = priv; |
824 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
825 | struct vivi_fmt *fmt; |
826 | enum v4l2_field field; | |
827 | unsigned int maxw, maxh; | |
828 | ||
829 | if (format.fourcc != f->fmt.pix.pixelformat) { | |
6c2f9901 MCC |
830 | dprintk(dev, 1, "Fourcc format (0x%08x) invalid. " |
831 | "Driver accepts only 0x%08x\n", | |
832 | f->fmt.pix.pixelformat, format.fourcc); | |
1e6dd65e MCC |
833 | return -EINVAL; |
834 | } | |
543323bc | 835 | fmt = &format; |
1e6dd65e MCC |
836 | |
837 | field = f->fmt.pix.field; | |
838 | ||
839 | if (field == V4L2_FIELD_ANY) { | |
543323bc | 840 | field = V4L2_FIELD_INTERLACED; |
1e6dd65e | 841 | } else if (V4L2_FIELD_INTERLACED != field) { |
6c2f9901 | 842 | dprintk(dev, 1, "Field type invalid.\n"); |
1e6dd65e MCC |
843 | return -EINVAL; |
844 | } | |
845 | ||
846 | maxw = norm_maxw(); | |
847 | maxh = norm_maxh(); | |
848 | ||
849 | f->fmt.pix.field = field; | |
850 | if (f->fmt.pix.height < 32) | |
851 | f->fmt.pix.height = 32; | |
852 | if (f->fmt.pix.height > maxh) | |
853 | f->fmt.pix.height = maxh; | |
854 | if (f->fmt.pix.width < 48) | |
855 | f->fmt.pix.width = 48; | |
856 | if (f->fmt.pix.width > maxw) | |
857 | f->fmt.pix.width = maxw; | |
858 | f->fmt.pix.width &= ~0x03; | |
859 | f->fmt.pix.bytesperline = | |
860 | (f->fmt.pix.width * fmt->depth) >> 3; | |
861 | f->fmt.pix.sizeimage = | |
862 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
863 | ||
864 | return 0; | |
865 | } | |
866 | ||
c820cc45 | 867 | /*FIXME: This seems to be generic enough to be at videodev2 */ |
543323bc | 868 | static int vidioc_s_fmt_cap(struct file *file, void *priv, |
c820cc45 | 869 | struct v4l2_format *f) |
1e6dd65e | 870 | { |
543323bc MCC |
871 | struct vivi_fh *fh = priv; |
872 | int ret = vidioc_try_fmt_cap(file, fh, f); | |
c820cc45 MCC |
873 | if (ret < 0) |
874 | return (ret); | |
875 | ||
876 | fh->fmt = &format; | |
877 | fh->width = f->fmt.pix.width; | |
878 | fh->height = f->fmt.pix.height; | |
879 | fh->vb_vidq.field = f->fmt.pix.field; | |
880 | fh->type = f->type; | |
881 | ||
882 | return (0); | |
1e6dd65e MCC |
883 | } |
884 | ||
543323bc MCC |
885 | static int vidioc_reqbufs(struct file *file, void *priv, |
886 | struct v4l2_requestbuffers *p) | |
1e6dd65e | 887 | { |
543323bc | 888 | struct vivi_fh *fh = priv; |
1e6dd65e | 889 | |
c820cc45 | 890 | return (videobuf_reqbufs(&fh->vb_vidq, p)); |
1e6dd65e MCC |
891 | } |
892 | ||
543323bc | 893 | static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p) |
1e6dd65e | 894 | { |
543323bc | 895 | struct vivi_fh *fh = priv; |
1e6dd65e | 896 | |
c820cc45 MCC |
897 | return (videobuf_querybuf(&fh->vb_vidq, p)); |
898 | } | |
1e6dd65e | 899 | |
543323bc | 900 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
c820cc45 | 901 | { |
543323bc | 902 | struct vivi_fh *fh = priv; |
1e6dd65e | 903 | |
c820cc45 MCC |
904 | return (videobuf_qbuf(&fh->vb_vidq, p)); |
905 | } | |
1e6dd65e | 906 | |
543323bc | 907 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
c820cc45 | 908 | { |
543323bc | 909 | struct vivi_fh *fh = priv; |
1e6dd65e | 910 | |
c820cc45 MCC |
911 | return (videobuf_dqbuf(&fh->vb_vidq, p, |
912 | file->f_flags & O_NONBLOCK)); | |
913 | } | |
1e6dd65e | 914 | |
0dfa9abd | 915 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
543323bc | 916 | static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf) |
c820cc45 | 917 | { |
543323bc | 918 | struct vivi_fh *fh = priv; |
4ceb04e1 | 919 | |
543323bc | 920 | return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8); |
c820cc45 MCC |
921 | } |
922 | #endif | |
1e6dd65e | 923 | |
dc46ace1 | 924 | static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) |
c820cc45 | 925 | { |
543323bc | 926 | struct vivi_fh *fh = priv; |
1e6dd65e | 927 | |
c820cc45 MCC |
928 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
929 | return -EINVAL; | |
930 | if (i != fh->type) | |
931 | return -EINVAL; | |
1e6dd65e | 932 | |
ba32bd95 | 933 | return videobuf_streamon(&fh->vb_vidq); |
c820cc45 | 934 | } |
1e6dd65e | 935 | |
dc46ace1 | 936 | static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) |
c820cc45 | 937 | { |
543323bc | 938 | struct vivi_fh *fh = priv; |
1e6dd65e | 939 | |
c820cc45 MCC |
940 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
941 | return -EINVAL; | |
942 | if (i != fh->type) | |
943 | return -EINVAL; | |
1e6dd65e | 944 | |
ba32bd95 | 945 | return videobuf_streamoff(&fh->vb_vidq); |
c820cc45 MCC |
946 | } |
947 | ||
543323bc | 948 | static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *i) |
c820cc45 | 949 | { |
c820cc45 MCC |
950 | return 0; |
951 | } | |
1e6dd65e | 952 | |
c820cc45 | 953 | /* only one input in this sample driver */ |
543323bc | 954 | static int vidioc_enum_input(struct file *file, void *priv, |
c820cc45 MCC |
955 | struct v4l2_input *inp) |
956 | { | |
957 | if (inp->index != 0) | |
958 | return -EINVAL; | |
1e6dd65e | 959 | |
c820cc45 | 960 | inp->type = V4L2_INPUT_TYPE_CAMERA; |
784c668b | 961 | inp->std = V4L2_STD_525_60; |
543323bc | 962 | strcpy(inp->name, "Camera"); |
1e6dd65e | 963 | |
c820cc45 MCC |
964 | return (0); |
965 | } | |
1e6dd65e | 966 | |
543323bc | 967 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) |
c820cc45 MCC |
968 | { |
969 | *i = 0; | |
1e6dd65e | 970 | |
c820cc45 MCC |
971 | return (0); |
972 | } | |
543323bc | 973 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) |
c820cc45 MCC |
974 | { |
975 | if (i > 0) | |
976 | return -EINVAL; | |
1e6dd65e | 977 | |
c820cc45 MCC |
978 | return (0); |
979 | } | |
1e6dd65e MCC |
980 | |
981 | /* --- controls ---------------------------------------------- */ | |
543323bc MCC |
982 | static int vidioc_queryctrl(struct file *file, void *priv, |
983 | struct v4l2_queryctrl *qc) | |
c820cc45 MCC |
984 | { |
985 | int i; | |
1e6dd65e | 986 | |
c820cc45 MCC |
987 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
988 | if (qc->id && qc->id == vivi_qctrl[i].id) { | |
989 | memcpy(qc, &(vivi_qctrl[i]), | |
990 | sizeof(*qc)); | |
991 | return (0); | |
992 | } | |
1e6dd65e | 993 | |
c820cc45 MCC |
994 | return -EINVAL; |
995 | } | |
1e6dd65e | 996 | |
543323bc MCC |
997 | static int vidioc_g_ctrl(struct file *file, void *priv, |
998 | struct v4l2_control *ctrl) | |
c820cc45 MCC |
999 | { |
1000 | int i; | |
1e6dd65e | 1001 | |
c820cc45 MCC |
1002 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
1003 | if (ctrl->id == vivi_qctrl[i].id) { | |
543323bc | 1004 | ctrl->value = qctl_regs[i]; |
c820cc45 MCC |
1005 | return (0); |
1006 | } | |
1e6dd65e | 1007 | |
c820cc45 | 1008 | return -EINVAL; |
1e6dd65e | 1009 | } |
543323bc | 1010 | static int vidioc_s_ctrl(struct file *file, void *priv, |
c820cc45 | 1011 | struct v4l2_control *ctrl) |
1e6dd65e | 1012 | { |
c820cc45 MCC |
1013 | int i; |
1014 | ||
1015 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
1016 | if (ctrl->id == vivi_qctrl[i].id) { | |
543323bc MCC |
1017 | if (ctrl->value < vivi_qctrl[i].minimum |
1018 | || ctrl->value > vivi_qctrl[i].maximum) { | |
c820cc45 MCC |
1019 | return (-ERANGE); |
1020 | } | |
543323bc | 1021 | qctl_regs[i] = ctrl->value; |
c820cc45 MCC |
1022 | return (0); |
1023 | } | |
1024 | return -EINVAL; | |
1e6dd65e MCC |
1025 | } |
1026 | ||
1027 | /* ------------------------------------------------------------------ | |
1028 | File operations for the device | |
1029 | ------------------------------------------------------------------*/ | |
1030 | ||
1031 | #define line_buf_size(norm) (norm_maxw(norm)*(format.depth+7)/8) | |
1032 | ||
1033 | static int vivi_open(struct inode *inode, struct file *file) | |
1034 | { | |
1035 | int minor = iminor(inode); | |
a991f44b | 1036 | struct vivi_dev *dev; |
1e6dd65e | 1037 | struct vivi_fh *fh; |
1e6dd65e MCC |
1038 | int i; |
1039 | ||
543323bc | 1040 | printk(KERN_DEBUG "vivi: open called (minor=%d)\n", minor); |
1e6dd65e | 1041 | |
a991f44b | 1042 | list_for_each_entry(dev, &vivi_devlist, vivi_devlist) |
f905c442 | 1043 | if (dev->vfd->minor == minor) |
a991f44b TP |
1044 | goto found; |
1045 | return -ENODEV; | |
c820cc45 | 1046 | |
543323bc | 1047 | found: |
1e6dd65e MCC |
1048 | /* If more than one user, mutex should be added */ |
1049 | dev->users++; | |
1050 | ||
6c2f9901 | 1051 | dprintk(dev, 1, "open minor=%d type=%s users=%d\n", minor, |
a991f44b | 1052 | v4l2_type_names[V4L2_BUF_TYPE_VIDEO_CAPTURE], dev->users); |
1e6dd65e MCC |
1053 | |
1054 | /* allocate + initialize per filehandle data */ | |
543323bc | 1055 | fh = kzalloc(sizeof(*fh), GFP_KERNEL); |
1e6dd65e MCC |
1056 | if (NULL == fh) { |
1057 | dev->users--; | |
1058 | return -ENOMEM; | |
1059 | } | |
1060 | ||
1061 | file->private_data = fh; | |
1062 | fh->dev = dev; | |
c820cc45 | 1063 | |
1e6dd65e MCC |
1064 | fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
1065 | fh->fmt = &format; | |
1066 | fh->width = 640; | |
1067 | fh->height = 480; | |
1068 | ||
1069 | /* Put all controls at a sane state */ | |
1070 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
543323bc | 1071 | qctl_regs[i] = vivi_qctrl[i].default_value; |
1e6dd65e MCC |
1072 | |
1073 | /* Resets frame counters */ | |
543323bc MCC |
1074 | dev->h = 0; |
1075 | dev->m = 0; | |
1076 | dev->s = 0; | |
dfd8c04e | 1077 | dev->ms = 0; |
543323bc MCC |
1078 | dev->mv_count = 0; |
1079 | dev->jiffies = jiffies; | |
1080 | sprintf(dev->timestr, "%02d:%02d:%02d:%03d", | |
dfd8c04e | 1081 | dev->h, dev->m, dev->s, dev->ms); |
1e6dd65e | 1082 | |
5a037706 | 1083 | videobuf_queue_vmalloc_init(&fh->vb_vidq, &vivi_video_qops, |
55862ac9 | 1084 | NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED, |
543323bc | 1085 | sizeof(struct vivi_buffer), fh); |
1e6dd65e MCC |
1086 | |
1087 | return 0; | |
1088 | } | |
1089 | ||
1090 | static ssize_t | |
1091 | vivi_read(struct file *file, char __user *data, size_t count, loff_t *ppos) | |
1092 | { | |
543323bc | 1093 | struct vivi_fh *fh = file->private_data; |
1e6dd65e | 1094 | |
543323bc | 1095 | if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
acb09af4 | 1096 | return videobuf_read_stream(&fh->vb_vidq, data, count, ppos, 0, |
1e6dd65e MCC |
1097 | file->f_flags & O_NONBLOCK); |
1098 | } | |
1099 | return 0; | |
1100 | } | |
1101 | ||
1102 | static unsigned int | |
1103 | vivi_poll(struct file *file, struct poll_table_struct *wait) | |
1104 | { | |
c820cc45 | 1105 | struct vivi_fh *fh = file->private_data; |
6c2f9901 | 1106 | struct vivi_dev *dev = fh->dev; |
85c7c70b | 1107 | struct videobuf_queue *q = &fh->vb_vidq; |
1e6dd65e | 1108 | |
6c2f9901 | 1109 | dprintk(dev, 1, "%s\n", __FUNCTION__); |
1e6dd65e MCC |
1110 | |
1111 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) | |
1112 | return POLLERR; | |
1113 | ||
85c7c70b | 1114 | return videobuf_poll_stream(file, q, wait); |
1e6dd65e MCC |
1115 | } |
1116 | ||
f905c442 | 1117 | static int vivi_close(struct inode *inode, struct file *file) |
1e6dd65e | 1118 | { |
c820cc45 MCC |
1119 | struct vivi_fh *fh = file->private_data; |
1120 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
1121 | struct vivi_dmaqueue *vidq = &dev->vidq; |
1122 | ||
1123 | int minor = iminor(inode); | |
1124 | ||
1125 | vivi_stop_thread(vidq); | |
053fcb60 | 1126 | videobuf_stop(&fh->vb_vidq); |
1e6dd65e MCC |
1127 | videobuf_mmap_free(&fh->vb_vidq); |
1128 | ||
55712ff7 | 1129 | kfree(fh); |
1e6dd65e MCC |
1130 | |
1131 | dev->users--; | |
1132 | ||
6c2f9901 MCC |
1133 | dprintk(dev, 1, "close called (minor=%d, users=%d)\n", |
1134 | minor, dev->users); | |
1e6dd65e MCC |
1135 | |
1136 | return 0; | |
1137 | } | |
1138 | ||
55712ff7 | 1139 | static int vivi_release(void) |
f905c442 | 1140 | { |
55712ff7 MCC |
1141 | struct vivi_dev *dev; |
1142 | struct list_head *list; | |
1143 | ||
1144 | while (!list_empty(&vivi_devlist)) { | |
1145 | list = vivi_devlist.next; | |
1146 | list_del(list); | |
1147 | dev = list_entry(list, struct vivi_dev, vivi_devlist); | |
f905c442 | 1148 | |
55712ff7 MCC |
1149 | if (-1 != dev->vfd->minor) |
1150 | video_unregister_device(dev->vfd); | |
1151 | else | |
1152 | video_device_release(dev->vfd); | |
1153 | ||
1154 | kfree(dev); | |
1155 | } | |
f905c442 MCC |
1156 | |
1157 | return 0; | |
1158 | } | |
1159 | ||
543323bc | 1160 | static int vivi_mmap(struct file *file, struct vm_area_struct *vma) |
1e6dd65e | 1161 | { |
6c2f9901 MCC |
1162 | struct vivi_fh *fh = file->private_data; |
1163 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
1164 | int ret; |
1165 | ||
6c2f9901 | 1166 | dprintk(dev, 1, "mmap called, vma=0x%08lx\n", (unsigned long)vma); |
1e6dd65e | 1167 | |
543323bc | 1168 | ret = videobuf_mmap_mapper(&fh->vb_vidq, vma); |
1e6dd65e | 1169 | |
6c2f9901 | 1170 | dprintk(dev, 1, "vma start=0x%08lx, size=%ld, ret=%d\n", |
1e6dd65e MCC |
1171 | (unsigned long)vma->vm_start, |
1172 | (unsigned long)vma->vm_end-(unsigned long)vma->vm_start, | |
1173 | ret); | |
1174 | ||
1175 | return ret; | |
1176 | } | |
1177 | ||
fa027c2a | 1178 | static const struct file_operations vivi_fops = { |
1e6dd65e MCC |
1179 | .owner = THIS_MODULE, |
1180 | .open = vivi_open, | |
f905c442 | 1181 | .release = vivi_close, |
1e6dd65e MCC |
1182 | .read = vivi_read, |
1183 | .poll = vivi_poll, | |
c820cc45 | 1184 | .ioctl = video_ioctl2, /* V4L2 ioctl handler */ |
5a037706 | 1185 | .mmap = vivi_mmap, |
1e6dd65e MCC |
1186 | .llseek = no_llseek, |
1187 | }; | |
1188 | ||
f905c442 | 1189 | static struct video_device vivi_template = { |
c820cc45 | 1190 | .name = "vivi", |
1e6dd65e | 1191 | .type = VID_TYPE_CAPTURE, |
1e6dd65e MCC |
1192 | .fops = &vivi_fops, |
1193 | .minor = -1, | |
f905c442 | 1194 | .release = video_device_release, |
c820cc45 MCC |
1195 | |
1196 | .vidioc_querycap = vidioc_querycap, | |
1197 | .vidioc_enum_fmt_cap = vidioc_enum_fmt_cap, | |
1198 | .vidioc_g_fmt_cap = vidioc_g_fmt_cap, | |
1199 | .vidioc_try_fmt_cap = vidioc_try_fmt_cap, | |
1200 | .vidioc_s_fmt_cap = vidioc_s_fmt_cap, | |
1201 | .vidioc_reqbufs = vidioc_reqbufs, | |
1202 | .vidioc_querybuf = vidioc_querybuf, | |
1203 | .vidioc_qbuf = vidioc_qbuf, | |
1204 | .vidioc_dqbuf = vidioc_dqbuf, | |
1205 | .vidioc_s_std = vidioc_s_std, | |
1206 | .vidioc_enum_input = vidioc_enum_input, | |
1207 | .vidioc_g_input = vidioc_g_input, | |
1208 | .vidioc_s_input = vidioc_s_input, | |
1209 | .vidioc_queryctrl = vidioc_queryctrl, | |
1210 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
1211 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
1212 | .vidioc_streamon = vidioc_streamon, | |
1213 | .vidioc_streamoff = vidioc_streamoff, | |
0dfa9abd | 1214 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
c820cc45 MCC |
1215 | .vidiocgmbuf = vidiocgmbuf, |
1216 | #endif | |
784c668b | 1217 | .tvnorms = V4L2_STD_525_60, |
e75f9cee | 1218 | .current_norm = V4L2_STD_NTSC_M, |
1e6dd65e | 1219 | }; |
c820cc45 | 1220 | /* ----------------------------------------------------------------- |
1e6dd65e MCC |
1221 | Initialization and module stuff |
1222 | ------------------------------------------------------------------*/ | |
1223 | ||
1224 | static int __init vivi_init(void) | |
1225 | { | |
55712ff7 | 1226 | int ret = -ENOMEM, i; |
1e6dd65e | 1227 | struct vivi_dev *dev; |
f905c442 | 1228 | struct video_device *vfd; |
1e6dd65e | 1229 | |
55712ff7 MCC |
1230 | for (i = 0; i < n_devs; i++) { |
1231 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); | |
1232 | if (NULL == dev) | |
1233 | break; | |
1e6dd65e | 1234 | |
55712ff7 | 1235 | list_add_tail(&dev->vivi_devlist, &vivi_devlist); |
1e6dd65e | 1236 | |
55712ff7 MCC |
1237 | /* init video dma queues */ |
1238 | INIT_LIST_HEAD(&dev->vidq.active); | |
1239 | INIT_LIST_HEAD(&dev->vidq.queued); | |
1240 | init_waitqueue_head(&dev->vidq.wq); | |
1e6dd65e | 1241 | |
55712ff7 MCC |
1242 | /* initialize locks */ |
1243 | mutex_init(&dev->lock); | |
55862ac9 | 1244 | spin_lock_init(&dev->slock); |
1e6dd65e | 1245 | |
55712ff7 MCC |
1246 | dev->vidq.timeout.function = vivi_vid_timeout; |
1247 | dev->vidq.timeout.data = (unsigned long)dev; | |
1248 | init_timer(&dev->vidq.timeout); | |
f905c442 | 1249 | |
55712ff7 MCC |
1250 | vfd = video_device_alloc(); |
1251 | if (NULL == vfd) | |
1252 | break; | |
1253 | ||
1254 | *vfd = vivi_template; | |
1255 | ||
1256 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr); | |
1257 | if (ret < 0) | |
1258 | break; | |
1259 | ||
1260 | snprintf(vfd->name, sizeof(vfd->name), "%s (%i)", | |
1261 | vivi_template.name, vfd->minor); | |
f905c442 | 1262 | |
55712ff7 MCC |
1263 | if (video_nr >= 0) |
1264 | video_nr++; | |
f905c442 | 1265 | |
55712ff7 MCC |
1266 | dev->vfd = vfd; |
1267 | } | |
f905c442 | 1268 | |
55712ff7 MCC |
1269 | if (ret < 0) { |
1270 | vivi_release(); | |
1271 | printk(KERN_INFO "Error %d while loading vivi driver\n", ret); | |
1272 | } else | |
1273 | printk(KERN_INFO "Video Technology Magazine Virtual Video " | |
1274 | "Capture Board successfully loaded.\n"); | |
1e6dd65e MCC |
1275 | return ret; |
1276 | } | |
1277 | ||
1278 | static void __exit vivi_exit(void) | |
1279 | { | |
55712ff7 | 1280 | vivi_release(); |
1e6dd65e MCC |
1281 | } |
1282 | ||
1283 | module_init(vivi_init); | |
1284 | module_exit(vivi_exit); | |
c820cc45 MCC |
1285 | |
1286 | MODULE_DESCRIPTION("Video Technology Magazine Virtual Video Capture Board"); | |
1287 | MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol"); | |
1288 | MODULE_LICENSE("Dual BSD/GPL"); | |
1289 | ||
1290 | module_param(video_nr, int, 0); | |
55712ff7 | 1291 | MODULE_PARM_DESC(video_nr, "video iminor start number"); |
c820cc45 | 1292 | |
55712ff7 MCC |
1293 | module_param(n_devs, int, 0); |
1294 | MODULE_PARM_DESC(n_devs, "number of video devices to create"); | |
c820cc45 | 1295 | |
8996b3f3 | 1296 | module_param_named(debug, vivi_template.debug, int, 0444); |
55712ff7 | 1297 | MODULE_PARM_DESC(debug, "activates debug info"); |
c820cc45 | 1298 | |
55712ff7 MCC |
1299 | module_param(vid_limit, int, 0644); |
1300 | MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes"); |