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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> | |
51b54029 | 28 | #include <linux/mutex.h> |
1e6dd65e | 29 | #include <linux/videodev2.h> |
1095136d | 30 | #include <linux/dma-mapping.h> |
f13df919 | 31 | #include <linux/interrupt.h> |
1e6dd65e MCC |
32 | #include <linux/kthread.h> |
33 | #include <linux/highmem.h> | |
7dfb7103 | 34 | #include <linux/freezer.h> |
5ab6c9af HV |
35 | #include <media/videobuf-vmalloc.h> |
36 | #include <media/v4l2-device.h> | |
37 | #include <media/v4l2-ioctl.h> | |
38 | #include "font.h" | |
1e6dd65e | 39 | |
584ce48d | 40 | #define VIVI_MODULE_NAME "vivi" |
745271ae | 41 | |
1e6dd65e MCC |
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 | 47 | #define VIVI_MAJOR_VERSION 0 |
5ab6c9af | 48 | #define VIVI_MINOR_VERSION 6 |
1e6dd65e | 49 | #define VIVI_RELEASE 0 |
543323bc MCC |
50 | #define VIVI_VERSION \ |
51 | KERNEL_VERSION(VIVI_MAJOR_VERSION, VIVI_MINOR_VERSION, VIVI_RELEASE) | |
1e6dd65e | 52 | |
5ab6c9af HV |
53 | MODULE_DESCRIPTION("Video Technology Magazine Virtual Video Capture Board"); |
54 | MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol"); | |
55 | MODULE_LICENSE("Dual BSD/GPL"); | |
56 | ||
57 | static unsigned video_nr = -1; | |
58 | module_param(video_nr, uint, 0644); | |
59 | MODULE_PARM_DESC(video_nr, "videoX start number, -1 is autodetect"); | |
60 | ||
61 | static unsigned n_devs = 1; | |
62 | module_param(n_devs, uint, 0644); | |
63 | MODULE_PARM_DESC(n_devs, "number of video devices to create"); | |
64 | ||
65 | static unsigned debug; | |
66 | module_param(debug, uint, 0644); | |
67 | MODULE_PARM_DESC(debug, "activates debug info"); | |
68 | ||
69 | static unsigned int vid_limit = 16; | |
70 | module_param(vid_limit, uint, 0644); | |
71 | MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes"); | |
72 | ||
1e6dd65e MCC |
73 | |
74 | /* supported controls */ | |
75 | static struct v4l2_queryctrl vivi_qctrl[] = { | |
76 | { | |
77 | .id = V4L2_CID_AUDIO_VOLUME, | |
78 | .name = "Volume", | |
79 | .minimum = 0, | |
80 | .maximum = 65535, | |
81 | .step = 65535/100, | |
82 | .default_value = 65535, | |
4a5aa62b | 83 | .flags = V4L2_CTRL_FLAG_SLIDER, |
1e6dd65e | 84 | .type = V4L2_CTRL_TYPE_INTEGER, |
543323bc | 85 | }, { |
1e6dd65e MCC |
86 | .id = V4L2_CID_BRIGHTNESS, |
87 | .type = V4L2_CTRL_TYPE_INTEGER, | |
88 | .name = "Brightness", | |
89 | .minimum = 0, | |
90 | .maximum = 255, | |
91 | .step = 1, | |
92 | .default_value = 127, | |
4a5aa62b | 93 | .flags = V4L2_CTRL_FLAG_SLIDER, |
1e6dd65e MCC |
94 | }, { |
95 | .id = V4L2_CID_CONTRAST, | |
96 | .type = V4L2_CTRL_TYPE_INTEGER, | |
97 | .name = "Contrast", | |
98 | .minimum = 0, | |
99 | .maximum = 255, | |
100 | .step = 0x1, | |
101 | .default_value = 0x10, | |
4a5aa62b | 102 | .flags = V4L2_CTRL_FLAG_SLIDER, |
1e6dd65e MCC |
103 | }, { |
104 | .id = V4L2_CID_SATURATION, | |
105 | .type = V4L2_CTRL_TYPE_INTEGER, | |
106 | .name = "Saturation", | |
107 | .minimum = 0, | |
108 | .maximum = 255, | |
109 | .step = 0x1, | |
110 | .default_value = 127, | |
4a5aa62b | 111 | .flags = V4L2_CTRL_FLAG_SLIDER, |
1e6dd65e MCC |
112 | }, { |
113 | .id = V4L2_CID_HUE, | |
114 | .type = V4L2_CTRL_TYPE_INTEGER, | |
115 | .name = "Hue", | |
116 | .minimum = -128, | |
117 | .maximum = 127, | |
118 | .step = 0x1, | |
119 | .default_value = 0, | |
4a5aa62b | 120 | .flags = V4L2_CTRL_FLAG_SLIDER, |
1e6dd65e MCC |
121 | } |
122 | }; | |
123 | ||
5ab6c9af HV |
124 | #define dprintk(dev, level, fmt, arg...) \ |
125 | v4l2_dbg(level, debug, &dev->v4l2_dev, fmt, ## arg) | |
1e6dd65e MCC |
126 | |
127 | /* ------------------------------------------------------------------ | |
128 | Basic structures | |
129 | ------------------------------------------------------------------*/ | |
130 | ||
131 | struct vivi_fmt { | |
132 | char *name; | |
133 | u32 fourcc; /* v4l2 format id */ | |
134 | int depth; | |
135 | }; | |
136 | ||
d891f475 MD |
137 | static struct vivi_fmt formats[] = { |
138 | { | |
139 | .name = "4:2:2, packed, YUYV", | |
140 | .fourcc = V4L2_PIX_FMT_YUYV, | |
141 | .depth = 16, | |
142 | }, | |
fca36bab MD |
143 | { |
144 | .name = "4:2:2, packed, UYVY", | |
145 | .fourcc = V4L2_PIX_FMT_UYVY, | |
146 | .depth = 16, | |
147 | }, | |
aeadb5d4 MD |
148 | { |
149 | .name = "RGB565 (LE)", | |
150 | .fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */ | |
151 | .depth = 16, | |
152 | }, | |
153 | { | |
154 | .name = "RGB565 (BE)", | |
155 | .fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */ | |
156 | .depth = 16, | |
157 | }, | |
def52393 MD |
158 | { |
159 | .name = "RGB555 (LE)", | |
160 | .fourcc = V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */ | |
161 | .depth = 16, | |
162 | }, | |
163 | { | |
164 | .name = "RGB555 (BE)", | |
165 | .fourcc = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */ | |
166 | .depth = 16, | |
167 | }, | |
1e6dd65e MCC |
168 | }; |
169 | ||
d891f475 MD |
170 | static struct vivi_fmt *get_format(struct v4l2_format *f) |
171 | { | |
172 | struct vivi_fmt *fmt; | |
173 | unsigned int k; | |
174 | ||
175 | for (k = 0; k < ARRAY_SIZE(formats); k++) { | |
176 | fmt = &formats[k]; | |
177 | if (fmt->fourcc == f->fmt.pix.pixelformat) | |
178 | break; | |
179 | } | |
180 | ||
181 | if (k == ARRAY_SIZE(formats)) | |
182 | return NULL; | |
183 | ||
184 | return &formats[k]; | |
185 | } | |
186 | ||
1e6dd65e MCC |
187 | struct sg_to_addr { |
188 | int pos; | |
189 | struct scatterlist *sg; | |
190 | }; | |
191 | ||
192 | /* buffer for one video frame */ | |
193 | struct vivi_buffer { | |
194 | /* common v4l buffer stuff -- must be first */ | |
195 | struct videobuf_buffer vb; | |
196 | ||
197 | struct vivi_fmt *fmt; | |
1e6dd65e MCC |
198 | }; |
199 | ||
200 | struct vivi_dmaqueue { | |
201 | struct list_head active; | |
1e6dd65e MCC |
202 | |
203 | /* thread for generating video stream*/ | |
204 | struct task_struct *kthread; | |
205 | wait_queue_head_t wq; | |
206 | /* Counters to control fps rate */ | |
207 | int frame; | |
208 | int ini_jiffies; | |
209 | }; | |
210 | ||
211 | static LIST_HEAD(vivi_devlist); | |
212 | ||
213 | struct vivi_dev { | |
214 | struct list_head vivi_devlist; | |
5ab6c9af | 215 | struct v4l2_device v4l2_dev; |
1e6dd65e | 216 | |
55862ac9 | 217 | spinlock_t slock; |
aa9dbac4 | 218 | struct mutex mutex; |
1e6dd65e MCC |
219 | |
220 | int users; | |
221 | ||
222 | /* various device info */ | |
f905c442 | 223 | struct video_device *vfd; |
1e6dd65e MCC |
224 | |
225 | struct vivi_dmaqueue vidq; | |
226 | ||
227 | /* Several counters */ | |
dfd8c04e MCC |
228 | int h, m, s, ms; |
229 | unsigned long jiffies; | |
1e6dd65e | 230 | char timestr[13]; |
025341d4 MCC |
231 | |
232 | int mv_count; /* Controls bars movement */ | |
e164b58a MCC |
233 | |
234 | /* Input Number */ | |
235 | int input; | |
c41ee24b HV |
236 | |
237 | /* Control 'registers' */ | |
238 | int qctl_regs[ARRAY_SIZE(vivi_qctrl)]; | |
1e6dd65e MCC |
239 | }; |
240 | ||
241 | struct vivi_fh { | |
242 | struct vivi_dev *dev; | |
243 | ||
244 | /* video capture */ | |
245 | struct vivi_fmt *fmt; | |
543323bc | 246 | unsigned int width, height; |
1e6dd65e MCC |
247 | struct videobuf_queue vb_vidq; |
248 | ||
249 | enum v4l2_buf_type type; | |
74d7c5af | 250 | unsigned char bars[8][3]; |
e164b58a | 251 | int input; /* Input Number on bars */ |
1e6dd65e MCC |
252 | }; |
253 | ||
254 | /* ------------------------------------------------------------------ | |
255 | DMA and thread functions | |
256 | ------------------------------------------------------------------*/ | |
257 | ||
258 | /* Bars and Colors should match positions */ | |
259 | ||
260 | enum colors { | |
261 | WHITE, | |
262 | AMBAR, | |
263 | CYAN, | |
264 | GREEN, | |
265 | MAGENTA, | |
266 | RED, | |
543323bc MCC |
267 | BLUE, |
268 | BLACK, | |
1e6dd65e MCC |
269 | }; |
270 | ||
1e6dd65e | 271 | /* R G B */ |
e164b58a MCC |
272 | #define COLOR_WHITE {204, 204, 204} |
273 | #define COLOR_AMBAR {208, 208, 0} | |
274 | #define COLOR_CIAN { 0, 206, 206} | |
275 | #define COLOR_GREEN { 0, 239, 0} | |
276 | #define COLOR_MAGENTA {239, 0, 239} | |
277 | #define COLOR_RED {205, 0, 0} | |
278 | #define COLOR_BLUE { 0, 0, 255} | |
279 | #define COLOR_BLACK { 0, 0, 0} | |
280 | ||
281 | struct bar_std { | |
282 | u8 bar[8][3]; | |
283 | }; | |
284 | ||
285 | /* Maximum number of bars are 10 - otherwise, the input print code | |
286 | should be modified */ | |
287 | static struct bar_std bars[] = { | |
288 | { /* Standard ITU-R color bar sequence */ | |
289 | { | |
290 | COLOR_WHITE, | |
291 | COLOR_AMBAR, | |
292 | COLOR_CIAN, | |
293 | COLOR_GREEN, | |
294 | COLOR_MAGENTA, | |
295 | COLOR_RED, | |
296 | COLOR_BLUE, | |
297 | COLOR_BLACK, | |
298 | } | |
299 | }, { | |
300 | { | |
301 | COLOR_WHITE, | |
302 | COLOR_AMBAR, | |
303 | COLOR_BLACK, | |
304 | COLOR_WHITE, | |
305 | COLOR_AMBAR, | |
306 | COLOR_BLACK, | |
307 | COLOR_WHITE, | |
308 | COLOR_AMBAR, | |
309 | } | |
310 | }, { | |
311 | { | |
312 | COLOR_WHITE, | |
313 | COLOR_CIAN, | |
314 | COLOR_BLACK, | |
315 | COLOR_WHITE, | |
316 | COLOR_CIAN, | |
317 | COLOR_BLACK, | |
318 | COLOR_WHITE, | |
319 | COLOR_CIAN, | |
320 | } | |
321 | }, { | |
322 | { | |
323 | COLOR_WHITE, | |
324 | COLOR_GREEN, | |
325 | COLOR_BLACK, | |
326 | COLOR_WHITE, | |
327 | COLOR_GREEN, | |
328 | COLOR_BLACK, | |
329 | COLOR_WHITE, | |
330 | COLOR_GREEN, | |
331 | } | |
332 | }, | |
1e6dd65e MCC |
333 | }; |
334 | ||
e164b58a MCC |
335 | #define NUM_INPUTS ARRAY_SIZE(bars) |
336 | ||
543323bc MCC |
337 | #define TO_Y(r, g, b) \ |
338 | (((16829 * r + 33039 * g + 6416 * b + 32768) >> 16) + 16) | |
1e6dd65e | 339 | /* RGB to V(Cr) Color transform */ |
543323bc MCC |
340 | #define TO_V(r, g, b) \ |
341 | (((28784 * r - 24103 * g - 4681 * b + 32768) >> 16) + 128) | |
1e6dd65e | 342 | /* RGB to U(Cb) Color transform */ |
543323bc MCC |
343 | #define TO_U(r, g, b) \ |
344 | (((-9714 * r - 19070 * g + 28784 * b + 32768) >> 16) + 128) | |
1e6dd65e | 345 | |
c285addb MCC |
346 | /* precalculate color bar values to speed up rendering */ |
347 | static void precalculate_bars(struct vivi_fh *fh) | |
348 | { | |
349 | struct vivi_dev *dev = fh->dev; | |
350 | unsigned char r, g, b; | |
351 | int k, is_yuv; | |
352 | ||
353 | fh->input = dev->input; | |
354 | ||
355 | for (k = 0; k < 8; k++) { | |
356 | r = bars[fh->input].bar[k][0]; | |
357 | g = bars[fh->input].bar[k][1]; | |
358 | b = bars[fh->input].bar[k][2]; | |
359 | is_yuv = 0; | |
360 | ||
361 | switch (fh->fmt->fourcc) { | |
362 | case V4L2_PIX_FMT_YUYV: | |
363 | case V4L2_PIX_FMT_UYVY: | |
364 | is_yuv = 1; | |
365 | break; | |
366 | case V4L2_PIX_FMT_RGB565: | |
367 | case V4L2_PIX_FMT_RGB565X: | |
368 | r >>= 3; | |
369 | g >>= 2; | |
370 | b >>= 3; | |
371 | break; | |
372 | case V4L2_PIX_FMT_RGB555: | |
373 | case V4L2_PIX_FMT_RGB555X: | |
374 | r >>= 3; | |
375 | g >>= 3; | |
376 | b >>= 3; | |
377 | break; | |
378 | } | |
379 | ||
380 | if (is_yuv) { | |
381 | fh->bars[k][0] = TO_Y(r, g, b); /* Luma */ | |
382 | fh->bars[k][1] = TO_U(r, g, b); /* Cb */ | |
383 | fh->bars[k][2] = TO_V(r, g, b); /* Cr */ | |
384 | } else { | |
385 | fh->bars[k][0] = r; | |
386 | fh->bars[k][1] = g; | |
387 | fh->bars[k][2] = b; | |
388 | } | |
389 | } | |
390 | ||
391 | } | |
392 | ||
e164b58a MCC |
393 | #define TSTAMP_MIN_Y 24 |
394 | #define TSTAMP_MAX_Y (TSTAMP_MIN_Y + 15) | |
395 | #define TSTAMP_INPUT_X 10 | |
396 | #define TSTAMP_MIN_X (54 + TSTAMP_INPUT_X) | |
1e6dd65e | 397 | |
74d7c5af MD |
398 | static void gen_twopix(struct vivi_fh *fh, unsigned char *buf, int colorpos) |
399 | { | |
400 | unsigned char r_y, g_u, b_v; | |
401 | unsigned char *p; | |
402 | int color; | |
403 | ||
404 | r_y = fh->bars[colorpos][0]; /* R or precalculated Y */ | |
405 | g_u = fh->bars[colorpos][1]; /* G or precalculated U */ | |
406 | b_v = fh->bars[colorpos][2]; /* B or precalculated V */ | |
407 | ||
408 | for (color = 0; color < 4; color++) { | |
409 | p = buf + color; | |
410 | ||
d891f475 MD |
411 | switch (fh->fmt->fourcc) { |
412 | case V4L2_PIX_FMT_YUYV: | |
413 | switch (color) { | |
414 | case 0: | |
415 | case 2: | |
416 | *p = r_y; | |
417 | break; | |
418 | case 1: | |
419 | *p = g_u; | |
420 | break; | |
421 | case 3: | |
422 | *p = b_v; | |
423 | break; | |
424 | } | |
74d7c5af | 425 | break; |
fca36bab MD |
426 | case V4L2_PIX_FMT_UYVY: |
427 | switch (color) { | |
428 | case 1: | |
429 | case 3: | |
430 | *p = r_y; | |
431 | break; | |
432 | case 0: | |
433 | *p = g_u; | |
434 | break; | |
435 | case 2: | |
436 | *p = b_v; | |
437 | break; | |
438 | } | |
439 | break; | |
aeadb5d4 MD |
440 | case V4L2_PIX_FMT_RGB565: |
441 | switch (color) { | |
442 | case 0: | |
443 | case 2: | |
444 | *p = (g_u << 5) | b_v; | |
445 | break; | |
446 | case 1: | |
447 | case 3: | |
448 | *p = (r_y << 3) | (g_u >> 3); | |
449 | break; | |
450 | } | |
451 | break; | |
452 | case V4L2_PIX_FMT_RGB565X: | |
453 | switch (color) { | |
454 | case 0: | |
455 | case 2: | |
456 | *p = (r_y << 3) | (g_u >> 3); | |
457 | break; | |
458 | case 1: | |
459 | case 3: | |
460 | *p = (g_u << 5) | b_v; | |
461 | break; | |
462 | } | |
463 | break; | |
def52393 MD |
464 | case V4L2_PIX_FMT_RGB555: |
465 | switch (color) { | |
466 | case 0: | |
467 | case 2: | |
468 | *p = (g_u << 5) | b_v; | |
469 | break; | |
470 | case 1: | |
471 | case 3: | |
472 | *p = (r_y << 2) | (g_u >> 3); | |
473 | break; | |
474 | } | |
475 | break; | |
476 | case V4L2_PIX_FMT_RGB555X: | |
477 | switch (color) { | |
478 | case 0: | |
479 | case 2: | |
480 | *p = (r_y << 2) | (g_u >> 3); | |
481 | break; | |
482 | case 1: | |
483 | case 3: | |
484 | *p = (g_u << 5) | b_v; | |
485 | break; | |
486 | } | |
487 | break; | |
74d7c5af MD |
488 | } |
489 | } | |
490 | } | |
491 | ||
492 | static void gen_line(struct vivi_fh *fh, char *basep, int inipos, int wmax, | |
543323bc | 493 | int hmax, int line, int count, char *timestr) |
1e6dd65e | 494 | { |
74d7c5af | 495 | int w, i, j; |
543323bc | 496 | int pos = inipos; |
74d7c5af MD |
497 | char *s; |
498 | u8 chr; | |
1e6dd65e MCC |
499 | |
500 | /* We will just duplicate the second pixel at the packet */ | |
543323bc | 501 | wmax /= 2; |
1e6dd65e MCC |
502 | |
503 | /* Generate a standard color bar pattern */ | |
543323bc MCC |
504 | for (w = 0; w < wmax; w++) { |
505 | int colorpos = ((w + count) * 8/(wmax + 1)) % 8; | |
74d7c5af MD |
506 | |
507 | gen_twopix(fh, basep + pos, colorpos); | |
508 | pos += 4; /* only 16 bpp supported for now */ | |
1e6dd65e MCC |
509 | } |
510 | ||
e164b58a MCC |
511 | /* Prints input entry number */ |
512 | ||
513 | /* Checks if it is possible to input number */ | |
543323bc | 514 | if (TSTAMP_MAX_Y >= hmax) |
1e6dd65e | 515 | goto end; |
e164b58a MCC |
516 | |
517 | if (TSTAMP_INPUT_X + strlen(timestr) >= wmax) | |
518 | goto end; | |
519 | ||
520 | if (line >= TSTAMP_MIN_Y && line <= TSTAMP_MAX_Y) { | |
521 | chr = rom8x16_bits[fh->input * 16 + line - TSTAMP_MIN_Y]; | |
522 | pos = TSTAMP_INPUT_X; | |
523 | for (i = 0; i < 7; i++) { | |
524 | /* Draw white font on black background */ | |
525 | if (chr & 1 << (7 - i)) | |
526 | gen_twopix(fh, basep + pos, WHITE); | |
527 | else | |
528 | gen_twopix(fh, basep + pos, BLACK); | |
529 | pos += 2; | |
530 | } | |
531 | } | |
532 | ||
533 | /* Checks if it is possible to show timestamp */ | |
543323bc | 534 | if (TSTAMP_MIN_X + strlen(timestr) >= wmax) |
1e6dd65e MCC |
535 | goto end; |
536 | ||
537 | /* Print stream time */ | |
543323bc MCC |
538 | if (line >= TSTAMP_MIN_Y && line <= TSTAMP_MAX_Y) { |
539 | j = TSTAMP_MIN_X; | |
540 | for (s = timestr; *s; s++) { | |
541 | chr = rom8x16_bits[(*s-0x30)*16+line-TSTAMP_MIN_Y]; | |
542 | for (i = 0; i < 7; i++) { | |
543323bc | 543 | pos = inipos + j * 2; |
74d7c5af MD |
544 | /* Draw white font on black background */ |
545 | if (chr & 1 << (7 - i)) | |
546 | gen_twopix(fh, basep + pos, WHITE); | |
547 | else | |
548 | gen_twopix(fh, basep + pos, BLACK); | |
1e6dd65e MCC |
549 | j++; |
550 | } | |
551 | } | |
552 | } | |
553 | ||
1e6dd65e | 554 | end: |
b50e7fe9 | 555 | return; |
1e6dd65e | 556 | } |
78718e5d | 557 | |
74d7c5af | 558 | static void vivi_fillbuff(struct vivi_fh *fh, struct vivi_buffer *buf) |
1e6dd65e | 559 | { |
74d7c5af | 560 | struct vivi_dev *dev = fh->dev; |
543323bc | 561 | int h , pos = 0; |
1e6dd65e MCC |
562 | int hmax = buf->vb.height; |
563 | int wmax = buf->vb.width; | |
1e6dd65e | 564 | struct timeval ts; |
5c554e6b | 565 | char *tmpbuf; |
543323bc | 566 | void *vbuf = videobuf_to_vmalloc(&buf->vb); |
b50e7fe9 | 567 | |
5c554e6b | 568 | if (!vbuf) |
5a037706 | 569 | return; |
1e6dd65e | 570 | |
5c554e6b MS |
571 | tmpbuf = kmalloc(wmax * 2, GFP_ATOMIC); |
572 | if (!tmpbuf) | |
78718e5d BP |
573 | return; |
574 | ||
543323bc | 575 | for (h = 0; h < hmax; h++) { |
74d7c5af | 576 | gen_line(fh, tmpbuf, 0, wmax, hmax, h, dev->mv_count, |
3bef5e4a | 577 | dev->timestr); |
78718e5d | 578 | memcpy(vbuf + pos, tmpbuf, wmax * 2); |
1e6dd65e MCC |
579 | pos += wmax*2; |
580 | } | |
581 | ||
025341d4 | 582 | dev->mv_count++; |
3bef5e4a | 583 | |
5a037706 MCC |
584 | kfree(tmpbuf); |
585 | ||
1e6dd65e MCC |
586 | /* Updates stream time */ |
587 | ||
dfd8c04e | 588 | dev->ms += jiffies_to_msecs(jiffies-dev->jiffies); |
543323bc | 589 | dev->jiffies = jiffies; |
dfd8c04e MCC |
590 | if (dev->ms >= 1000) { |
591 | dev->ms -= 1000; | |
1e6dd65e | 592 | dev->s++; |
543323bc MCC |
593 | if (dev->s >= 60) { |
594 | dev->s -= 60; | |
1e6dd65e | 595 | dev->m++; |
543323bc MCC |
596 | if (dev->m > 60) { |
597 | dev->m -= 60; | |
1e6dd65e | 598 | dev->h++; |
543323bc MCC |
599 | if (dev->h > 24) |
600 | dev->h -= 24; | |
1e6dd65e MCC |
601 | } |
602 | } | |
603 | } | |
543323bc | 604 | sprintf(dev->timestr, "%02d:%02d:%02d:%03d", |
dfd8c04e | 605 | dev->h, dev->m, dev->s, dev->ms); |
1e6dd65e | 606 | |
6c2f9901 MCC |
607 | dprintk(dev, 2, "vivifill at %s: Buffer 0x%08lx size= %d\n", |
608 | dev->timestr, (unsigned long)tmpbuf, pos); | |
1e6dd65e MCC |
609 | |
610 | /* Advice that buffer was filled */ | |
1e6dd65e MCC |
611 | buf->vb.field_count++; |
612 | do_gettimeofday(&ts); | |
613 | buf->vb.ts = ts; | |
78718e5d | 614 | buf->vb.state = VIDEOBUF_DONE; |
1e6dd65e MCC |
615 | } |
616 | ||
78718e5d | 617 | static void vivi_thread_tick(struct vivi_fh *fh) |
1e6dd65e | 618 | { |
78718e5d BP |
619 | struct vivi_buffer *buf; |
620 | struct vivi_dev *dev = fh->dev; | |
621 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
1e6dd65e | 622 | |
78718e5d | 623 | unsigned long flags = 0; |
1e6dd65e | 624 | |
78718e5d | 625 | dprintk(dev, 1, "Thread tick\n"); |
1e6dd65e | 626 | |
78718e5d BP |
627 | spin_lock_irqsave(&dev->slock, flags); |
628 | if (list_empty(&dma_q->active)) { | |
629 | dprintk(dev, 1, "No active queue to serve\n"); | |
630 | goto unlock; | |
631 | } | |
1e6dd65e | 632 | |
78718e5d BP |
633 | buf = list_entry(dma_q->active.next, |
634 | struct vivi_buffer, vb.queue); | |
1e6dd65e | 635 | |
78718e5d BP |
636 | /* Nobody is waiting on this buffer, return */ |
637 | if (!waitqueue_active(&buf->vb.done)) | |
638 | goto unlock; | |
1e6dd65e | 639 | |
78718e5d | 640 | list_del(&buf->vb.queue); |
0b600512 | 641 | |
78718e5d BP |
642 | do_gettimeofday(&buf->vb.ts); |
643 | ||
644 | /* Fill buffer */ | |
74d7c5af | 645 | vivi_fillbuff(fh, buf); |
78718e5d BP |
646 | dprintk(dev, 1, "filled buffer %p\n", buf); |
647 | ||
648 | wake_up(&buf->vb.done); | |
649 | dprintk(dev, 2, "[%p/%d] wakeup\n", buf, buf->vb. i); | |
650 | unlock: | |
651 | spin_unlock_irqrestore(&dev->slock, flags); | |
652 | return; | |
1e6dd65e MCC |
653 | } |
654 | ||
6594ad82 MCC |
655 | #define frames_to_ms(frames) \ |
656 | ((frames * WAKE_NUMERATOR * 1000) / WAKE_DENOMINATOR) | |
657 | ||
78718e5d | 658 | static void vivi_sleep(struct vivi_fh *fh) |
1e6dd65e | 659 | { |
78718e5d BP |
660 | struct vivi_dev *dev = fh->dev; |
661 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
662 | int timeout; | |
1e6dd65e MCC |
663 | DECLARE_WAITQUEUE(wait, current); |
664 | ||
7e28adb2 | 665 | dprintk(dev, 1, "%s dma_q=0x%08lx\n", __func__, |
6c2f9901 | 666 | (unsigned long)dma_q); |
1e6dd65e MCC |
667 | |
668 | add_wait_queue(&dma_q->wq, &wait); | |
6594ad82 MCC |
669 | if (kthread_should_stop()) |
670 | goto stop_task; | |
671 | ||
6594ad82 | 672 | /* Calculate time to wake up */ |
78718e5d | 673 | timeout = msecs_to_jiffies(frames_to_ms(1)); |
6594ad82 | 674 | |
78718e5d | 675 | vivi_thread_tick(fh); |
6594ad82 MCC |
676 | |
677 | schedule_timeout_interruptible(timeout); | |
1e6dd65e | 678 | |
6594ad82 | 679 | stop_task: |
1e6dd65e MCC |
680 | remove_wait_queue(&dma_q->wq, &wait); |
681 | try_to_freeze(); | |
682 | } | |
683 | ||
972c3517 | 684 | static int vivi_thread(void *data) |
1e6dd65e | 685 | { |
78718e5d BP |
686 | struct vivi_fh *fh = data; |
687 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e | 688 | |
6c2f9901 | 689 | dprintk(dev, 1, "thread started\n"); |
1e6dd65e | 690 | |
83144186 | 691 | set_freezable(); |
0b600512 | 692 | |
1e6dd65e | 693 | for (;;) { |
78718e5d | 694 | vivi_sleep(fh); |
1e6dd65e MCC |
695 | |
696 | if (kthread_should_stop()) | |
697 | break; | |
698 | } | |
6c2f9901 | 699 | dprintk(dev, 1, "thread: exit\n"); |
1e6dd65e MCC |
700 | return 0; |
701 | } | |
702 | ||
78718e5d | 703 | static int vivi_start_thread(struct vivi_fh *fh) |
1e6dd65e | 704 | { |
78718e5d BP |
705 | struct vivi_dev *dev = fh->dev; |
706 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
6c2f9901 | 707 | |
543323bc MCC |
708 | dma_q->frame = 0; |
709 | dma_q->ini_jiffies = jiffies; | |
1e6dd65e | 710 | |
7e28adb2 | 711 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e | 712 | |
78718e5d | 713 | dma_q->kthread = kthread_run(vivi_thread, fh, "vivi"); |
1e6dd65e | 714 | |
054afee4 | 715 | if (IS_ERR(dma_q->kthread)) { |
5ab6c9af | 716 | v4l2_err(&dev->v4l2_dev, "kernel_thread() failed\n"); |
054afee4 | 717 | return PTR_ERR(dma_q->kthread); |
1e6dd65e | 718 | } |
0b600512 MCC |
719 | /* Wakes thread */ |
720 | wake_up_interruptible(&dma_q->wq); | |
721 | ||
7e28adb2 | 722 | dprintk(dev, 1, "returning from %s\n", __func__); |
1e6dd65e MCC |
723 | return 0; |
724 | } | |
725 | ||
972c3517 | 726 | static void vivi_stop_thread(struct vivi_dmaqueue *dma_q) |
1e6dd65e | 727 | { |
6c2f9901 MCC |
728 | struct vivi_dev *dev = container_of(dma_q, struct vivi_dev, vidq); |
729 | ||
7e28adb2 | 730 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e MCC |
731 | /* shutdown control thread */ |
732 | if (dma_q->kthread) { | |
733 | kthread_stop(dma_q->kthread); | |
543323bc | 734 | dma_q->kthread = NULL; |
1e6dd65e MCC |
735 | } |
736 | } | |
737 | ||
1e6dd65e MCC |
738 | /* ------------------------------------------------------------------ |
739 | Videobuf operations | |
740 | ------------------------------------------------------------------*/ | |
741 | static int | |
742 | buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) | |
743 | { | |
6c2f9901 MCC |
744 | struct vivi_fh *fh = vq->priv_data; |
745 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
746 | |
747 | *size = fh->width*fh->height*2; | |
748 | ||
749 | if (0 == *count) | |
750 | *count = 32; | |
6bb2790f | 751 | |
1e6dd65e MCC |
752 | while (*size * *count > vid_limit * 1024 * 1024) |
753 | (*count)--; | |
6bb2790f | 754 | |
7e28adb2 | 755 | dprintk(dev, 1, "%s, count=%d, size=%d\n", __func__, |
6c2f9901 | 756 | *count, *size); |
6bb2790f | 757 | |
1e6dd65e MCC |
758 | return 0; |
759 | } | |
760 | ||
972c3517 | 761 | static void free_buffer(struct videobuf_queue *vq, struct vivi_buffer *buf) |
1e6dd65e | 762 | { |
6c2f9901 MCC |
763 | struct vivi_fh *fh = vq->priv_data; |
764 | struct vivi_dev *dev = fh->dev; | |
765 | ||
7e28adb2 | 766 | dprintk(dev, 1, "%s, state: %i\n", __func__, buf->vb.state); |
1e6dd65e MCC |
767 | |
768 | if (in_interrupt()) | |
769 | BUG(); | |
770 | ||
5a037706 | 771 | videobuf_vmalloc_free(&buf->vb); |
fbde31d5 | 772 | dprintk(dev, 1, "free_buffer: freed\n"); |
0fc0686e | 773 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
1e6dd65e MCC |
774 | } |
775 | ||
776 | #define norm_maxw() 1024 | |
777 | #define norm_maxh() 768 | |
778 | static int | |
779 | buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, | |
780 | enum v4l2_field field) | |
781 | { | |
782 | struct vivi_fh *fh = vq->priv_data; | |
6c2f9901 | 783 | struct vivi_dev *dev = fh->dev; |
543323bc | 784 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
78718e5d | 785 | int rc; |
1e6dd65e | 786 | |
7e28adb2 | 787 | dprintk(dev, 1, "%s, field=%d\n", __func__, field); |
1e6dd65e MCC |
788 | |
789 | BUG_ON(NULL == fh->fmt); | |
78718e5d | 790 | |
1e6dd65e MCC |
791 | if (fh->width < 48 || fh->width > norm_maxw() || |
792 | fh->height < 32 || fh->height > norm_maxh()) | |
793 | return -EINVAL; | |
78718e5d | 794 | |
1e6dd65e MCC |
795 | buf->vb.size = fh->width*fh->height*2; |
796 | if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) | |
797 | return -EINVAL; | |
798 | ||
78718e5d BP |
799 | /* These properties only change when queue is idle, see s_fmt */ |
800 | buf->fmt = fh->fmt; | |
801 | buf->vb.width = fh->width; | |
802 | buf->vb.height = fh->height; | |
803 | buf->vb.field = field; | |
1e6dd65e | 804 | |
c285addb MCC |
805 | precalculate_bars(fh); |
806 | ||
0fc0686e | 807 | if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { |
543323bc MCC |
808 | rc = videobuf_iolock(vq, &buf->vb, NULL); |
809 | if (rc < 0) | |
1e6dd65e MCC |
810 | goto fail; |
811 | } | |
812 | ||
0fc0686e | 813 | buf->vb.state = VIDEOBUF_PREPARED; |
1e6dd65e | 814 | |
1e6dd65e MCC |
815 | return 0; |
816 | ||
817 | fail: | |
543323bc | 818 | free_buffer(vq, buf); |
1e6dd65e MCC |
819 | return rc; |
820 | } | |
821 | ||
822 | static void | |
823 | buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) | |
824 | { | |
543323bc MCC |
825 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
826 | struct vivi_fh *fh = vq->priv_data; | |
827 | struct vivi_dev *dev = fh->dev; | |
78718e5d BP |
828 | struct vivi_dmaqueue *vidq = &dev->vidq; |
829 | ||
7e28adb2 | 830 | dprintk(dev, 1, "%s\n", __func__); |
78718e5d BP |
831 | |
832 | buf->vb.state = VIDEOBUF_QUEUED; | |
833 | list_add_tail(&buf->vb.queue, &vidq->active); | |
1e6dd65e MCC |
834 | } |
835 | ||
543323bc MCC |
836 | static void buffer_release(struct videobuf_queue *vq, |
837 | struct videobuf_buffer *vb) | |
1e6dd65e | 838 | { |
543323bc | 839 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
1e6dd65e | 840 | struct vivi_fh *fh = vq->priv_data; |
543323bc | 841 | struct vivi_dev *dev = (struct vivi_dev *)fh->dev; |
1e6dd65e | 842 | |
7e28adb2 | 843 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e | 844 | |
543323bc | 845 | free_buffer(vq, buf); |
1e6dd65e MCC |
846 | } |
847 | ||
1e6dd65e MCC |
848 | static struct videobuf_queue_ops vivi_video_qops = { |
849 | .buf_setup = buffer_setup, | |
850 | .buf_prepare = buffer_prepare, | |
851 | .buf_queue = buffer_queue, | |
852 | .buf_release = buffer_release, | |
1e6dd65e MCC |
853 | }; |
854 | ||
c820cc45 MCC |
855 | /* ------------------------------------------------------------------ |
856 | IOCTL vidioc handling | |
857 | ------------------------------------------------------------------*/ | |
543323bc | 858 | static int vidioc_querycap(struct file *file, void *priv, |
c820cc45 MCC |
859 | struct v4l2_capability *cap) |
860 | { | |
5ab6c9af HV |
861 | struct vivi_fh *fh = priv; |
862 | struct vivi_dev *dev = fh->dev; | |
863 | ||
c820cc45 MCC |
864 | strcpy(cap->driver, "vivi"); |
865 | strcpy(cap->card, "vivi"); | |
5ab6c9af | 866 | strlcpy(cap->bus_info, dev->v4l2_dev.name, sizeof(cap->bus_info)); |
c820cc45 MCC |
867 | cap->version = VIVI_VERSION; |
868 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | | |
869 | V4L2_CAP_STREAMING | | |
870 | V4L2_CAP_READWRITE; | |
871 | return 0; | |
872 | } | |
873 | ||
78b526a4 | 874 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 MCC |
875 | struct v4l2_fmtdesc *f) |
876 | { | |
d891f475 MD |
877 | struct vivi_fmt *fmt; |
878 | ||
879 | if (f->index >= ARRAY_SIZE(formats)) | |
c820cc45 MCC |
880 | return -EINVAL; |
881 | ||
d891f475 MD |
882 | fmt = &formats[f->index]; |
883 | ||
884 | strlcpy(f->description, fmt->name, sizeof(f->description)); | |
885 | f->pixelformat = fmt->fourcc; | |
c820cc45 MCC |
886 | return 0; |
887 | } | |
888 | ||
78b526a4 | 889 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 MCC |
890 | struct v4l2_format *f) |
891 | { | |
543323bc | 892 | struct vivi_fh *fh = priv; |
c820cc45 MCC |
893 | |
894 | f->fmt.pix.width = fh->width; | |
895 | f->fmt.pix.height = fh->height; | |
896 | f->fmt.pix.field = fh->vb_vidq.field; | |
897 | f->fmt.pix.pixelformat = fh->fmt->fourcc; | |
898 | f->fmt.pix.bytesperline = | |
899 | (f->fmt.pix.width * fh->fmt->depth) >> 3; | |
900 | f->fmt.pix.sizeimage = | |
901 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
902 | ||
903 | return (0); | |
904 | } | |
905 | ||
78b526a4 | 906 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, |
1e6dd65e MCC |
907 | struct v4l2_format *f) |
908 | { | |
6c2f9901 MCC |
909 | struct vivi_fh *fh = priv; |
910 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
911 | struct vivi_fmt *fmt; |
912 | enum v4l2_field field; | |
913 | unsigned int maxw, maxh; | |
914 | ||
d891f475 MD |
915 | fmt = get_format(f); |
916 | if (!fmt) { | |
917 | dprintk(dev, 1, "Fourcc format (0x%08x) invalid.\n", | |
918 | f->fmt.pix.pixelformat); | |
1e6dd65e MCC |
919 | return -EINVAL; |
920 | } | |
1e6dd65e MCC |
921 | |
922 | field = f->fmt.pix.field; | |
923 | ||
924 | if (field == V4L2_FIELD_ANY) { | |
543323bc | 925 | field = V4L2_FIELD_INTERLACED; |
1e6dd65e | 926 | } else if (V4L2_FIELD_INTERLACED != field) { |
6c2f9901 | 927 | dprintk(dev, 1, "Field type invalid.\n"); |
1e6dd65e MCC |
928 | return -EINVAL; |
929 | } | |
930 | ||
931 | maxw = norm_maxw(); | |
932 | maxh = norm_maxh(); | |
933 | ||
934 | f->fmt.pix.field = field; | |
3adbbb8e TP |
935 | v4l_bound_align_image(&f->fmt.pix.width, 48, maxw, 2, |
936 | &f->fmt.pix.height, 32, maxh, 0, 0); | |
1e6dd65e MCC |
937 | f->fmt.pix.bytesperline = |
938 | (f->fmt.pix.width * fmt->depth) >> 3; | |
939 | f->fmt.pix.sizeimage = | |
940 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
941 | ||
942 | return 0; | |
943 | } | |
944 | ||
e164b58a MCC |
945 | /*FIXME: This seems to be generic enough to be at videodev2 */ |
946 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, | |
947 | struct v4l2_format *f) | |
948 | { | |
949 | struct vivi_fh *fh = priv; | |
950 | struct videobuf_queue *q = &fh->vb_vidq; | |
951 | ||
952 | int ret = vidioc_try_fmt_vid_cap(file, fh, f); | |
953 | if (ret < 0) | |
954 | return ret; | |
955 | ||
956 | mutex_lock(&q->vb_lock); | |
957 | ||
958 | if (videobuf_queue_is_busy(&fh->vb_vidq)) { | |
959 | dprintk(fh->dev, 1, "%s queue busy\n", __func__); | |
960 | ret = -EBUSY; | |
961 | goto out; | |
962 | } | |
963 | ||
964 | fh->fmt = get_format(f); | |
965 | fh->width = f->fmt.pix.width; | |
966 | fh->height = f->fmt.pix.height; | |
967 | fh->vb_vidq.field = f->fmt.pix.field; | |
968 | fh->type = f->type; | |
969 | ||
78718e5d BP |
970 | ret = 0; |
971 | out: | |
972 | mutex_unlock(&q->vb_lock); | |
973 | ||
e164b58a | 974 | return ret; |
1e6dd65e MCC |
975 | } |
976 | ||
543323bc MCC |
977 | static int vidioc_reqbufs(struct file *file, void *priv, |
978 | struct v4l2_requestbuffers *p) | |
1e6dd65e | 979 | { |
543323bc | 980 | struct vivi_fh *fh = priv; |
1e6dd65e | 981 | |
c820cc45 | 982 | return (videobuf_reqbufs(&fh->vb_vidq, p)); |
1e6dd65e MCC |
983 | } |
984 | ||
543323bc | 985 | static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p) |
1e6dd65e | 986 | { |
543323bc | 987 | struct vivi_fh *fh = priv; |
1e6dd65e | 988 | |
c820cc45 MCC |
989 | return (videobuf_querybuf(&fh->vb_vidq, p)); |
990 | } | |
1e6dd65e | 991 | |
543323bc | 992 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
c820cc45 | 993 | { |
543323bc | 994 | struct vivi_fh *fh = priv; |
1e6dd65e | 995 | |
c820cc45 MCC |
996 | return (videobuf_qbuf(&fh->vb_vidq, p)); |
997 | } | |
1e6dd65e | 998 | |
543323bc | 999 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
c820cc45 | 1000 | { |
543323bc | 1001 | struct vivi_fh *fh = priv; |
1e6dd65e | 1002 | |
c820cc45 MCC |
1003 | return (videobuf_dqbuf(&fh->vb_vidq, p, |
1004 | file->f_flags & O_NONBLOCK)); | |
1005 | } | |
1e6dd65e | 1006 | |
0dfa9abd | 1007 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
543323bc | 1008 | static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf) |
c820cc45 | 1009 | { |
543323bc | 1010 | struct vivi_fh *fh = priv; |
4ceb04e1 | 1011 | |
543323bc | 1012 | return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8); |
c820cc45 MCC |
1013 | } |
1014 | #endif | |
1e6dd65e | 1015 | |
dc46ace1 | 1016 | static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) |
c820cc45 | 1017 | { |
543323bc | 1018 | struct vivi_fh *fh = priv; |
1e6dd65e | 1019 | |
c820cc45 MCC |
1020 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1021 | return -EINVAL; | |
1022 | if (i != fh->type) | |
1023 | return -EINVAL; | |
1e6dd65e | 1024 | |
ba32bd95 | 1025 | return videobuf_streamon(&fh->vb_vidq); |
c820cc45 | 1026 | } |
1e6dd65e | 1027 | |
dc46ace1 | 1028 | static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) |
c820cc45 | 1029 | { |
543323bc | 1030 | struct vivi_fh *fh = priv; |
1e6dd65e | 1031 | |
c820cc45 MCC |
1032 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1033 | return -EINVAL; | |
1034 | if (i != fh->type) | |
1035 | return -EINVAL; | |
1e6dd65e | 1036 | |
ba32bd95 | 1037 | return videobuf_streamoff(&fh->vb_vidq); |
c820cc45 MCC |
1038 | } |
1039 | ||
543323bc | 1040 | static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *i) |
c820cc45 | 1041 | { |
c820cc45 MCC |
1042 | return 0; |
1043 | } | |
1e6dd65e | 1044 | |
c820cc45 | 1045 | /* only one input in this sample driver */ |
543323bc | 1046 | static int vidioc_enum_input(struct file *file, void *priv, |
c820cc45 MCC |
1047 | struct v4l2_input *inp) |
1048 | { | |
e164b58a | 1049 | if (inp->index >= NUM_INPUTS) |
c820cc45 | 1050 | return -EINVAL; |
1e6dd65e | 1051 | |
c820cc45 | 1052 | inp->type = V4L2_INPUT_TYPE_CAMERA; |
784c668b | 1053 | inp->std = V4L2_STD_525_60; |
e164b58a | 1054 | sprintf(inp->name, "Camera %u", inp->index); |
1e6dd65e | 1055 | |
c820cc45 MCC |
1056 | return (0); |
1057 | } | |
1e6dd65e | 1058 | |
543323bc | 1059 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) |
c820cc45 | 1060 | { |
e164b58a MCC |
1061 | struct vivi_fh *fh = priv; |
1062 | struct vivi_dev *dev = fh->dev; | |
1063 | ||
1064 | *i = dev->input; | |
1e6dd65e | 1065 | |
c820cc45 MCC |
1066 | return (0); |
1067 | } | |
543323bc | 1068 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) |
c820cc45 | 1069 | { |
e164b58a MCC |
1070 | struct vivi_fh *fh = priv; |
1071 | struct vivi_dev *dev = fh->dev; | |
1072 | ||
1073 | if (i >= NUM_INPUTS) | |
c820cc45 | 1074 | return -EINVAL; |
1e6dd65e | 1075 | |
e164b58a MCC |
1076 | dev->input = i; |
1077 | precalculate_bars(fh); | |
1078 | ||
c820cc45 MCC |
1079 | return (0); |
1080 | } | |
1e6dd65e MCC |
1081 | |
1082 | /* --- controls ---------------------------------------------- */ | |
543323bc MCC |
1083 | static int vidioc_queryctrl(struct file *file, void *priv, |
1084 | struct v4l2_queryctrl *qc) | |
c820cc45 MCC |
1085 | { |
1086 | int i; | |
1e6dd65e | 1087 | |
c820cc45 MCC |
1088 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
1089 | if (qc->id && qc->id == vivi_qctrl[i].id) { | |
1090 | memcpy(qc, &(vivi_qctrl[i]), | |
1091 | sizeof(*qc)); | |
1092 | return (0); | |
1093 | } | |
1e6dd65e | 1094 | |
c820cc45 MCC |
1095 | return -EINVAL; |
1096 | } | |
1e6dd65e | 1097 | |
543323bc MCC |
1098 | static int vidioc_g_ctrl(struct file *file, void *priv, |
1099 | struct v4l2_control *ctrl) | |
c820cc45 | 1100 | { |
c41ee24b HV |
1101 | struct vivi_fh *fh = priv; |
1102 | struct vivi_dev *dev = fh->dev; | |
c820cc45 | 1103 | int i; |
1e6dd65e | 1104 | |
c820cc45 MCC |
1105 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
1106 | if (ctrl->id == vivi_qctrl[i].id) { | |
c41ee24b HV |
1107 | ctrl->value = dev->qctl_regs[i]; |
1108 | return 0; | |
c820cc45 | 1109 | } |
1e6dd65e | 1110 | |
c820cc45 | 1111 | return -EINVAL; |
1e6dd65e | 1112 | } |
543323bc | 1113 | static int vidioc_s_ctrl(struct file *file, void *priv, |
c820cc45 | 1114 | struct v4l2_control *ctrl) |
1e6dd65e | 1115 | { |
c41ee24b HV |
1116 | struct vivi_fh *fh = priv; |
1117 | struct vivi_dev *dev = fh->dev; | |
c820cc45 MCC |
1118 | int i; |
1119 | ||
1120 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
1121 | if (ctrl->id == vivi_qctrl[i].id) { | |
c41ee24b HV |
1122 | if (ctrl->value < vivi_qctrl[i].minimum || |
1123 | ctrl->value > vivi_qctrl[i].maximum) { | |
1124 | return -ERANGE; | |
1125 | } | |
1126 | dev->qctl_regs[i] = ctrl->value; | |
1127 | return 0; | |
c820cc45 MCC |
1128 | } |
1129 | return -EINVAL; | |
1e6dd65e MCC |
1130 | } |
1131 | ||
1132 | /* ------------------------------------------------------------------ | |
1133 | File operations for the device | |
1134 | ------------------------------------------------------------------*/ | |
1135 | ||
bec43661 | 1136 | static int vivi_open(struct file *file) |
1e6dd65e | 1137 | { |
5ab6c9af | 1138 | struct vivi_dev *dev = video_drvdata(file); |
63b79cfa | 1139 | struct vivi_fh *fh = NULL; |
aa9dbac4 | 1140 | int retval = 0; |
1e6dd65e | 1141 | |
aa9dbac4 | 1142 | mutex_lock(&dev->mutex); |
1e6dd65e MCC |
1143 | dev->users++; |
1144 | ||
aa9dbac4 BP |
1145 | if (dev->users > 1) { |
1146 | dev->users--; | |
5ab6c9af HV |
1147 | mutex_unlock(&dev->mutex); |
1148 | return -EBUSY; | |
aa9dbac4 BP |
1149 | } |
1150 | ||
5ab6c9af | 1151 | dprintk(dev, 1, "open /dev/video%d type=%s users=%d\n", dev->vfd->num, |
a991f44b | 1152 | v4l2_type_names[V4L2_BUF_TYPE_VIDEO_CAPTURE], dev->users); |
1e6dd65e MCC |
1153 | |
1154 | /* allocate + initialize per filehandle data */ | |
543323bc | 1155 | fh = kzalloc(sizeof(*fh), GFP_KERNEL); |
1e6dd65e MCC |
1156 | if (NULL == fh) { |
1157 | dev->users--; | |
aa9dbac4 | 1158 | retval = -ENOMEM; |
1e6dd65e | 1159 | } |
aa9dbac4 | 1160 | mutex_unlock(&dev->mutex); |
5ab6c9af HV |
1161 | |
1162 | if (retval) | |
aa9dbac4 | 1163 | return retval; |
1e6dd65e MCC |
1164 | |
1165 | file->private_data = fh; | |
1166 | fh->dev = dev; | |
c820cc45 | 1167 | |
1e6dd65e | 1168 | fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
d891f475 | 1169 | fh->fmt = &formats[0]; |
1e6dd65e MCC |
1170 | fh->width = 640; |
1171 | fh->height = 480; | |
1172 | ||
1e6dd65e | 1173 | /* Resets frame counters */ |
543323bc MCC |
1174 | dev->h = 0; |
1175 | dev->m = 0; | |
1176 | dev->s = 0; | |
dfd8c04e | 1177 | dev->ms = 0; |
543323bc MCC |
1178 | dev->mv_count = 0; |
1179 | dev->jiffies = jiffies; | |
1180 | sprintf(dev->timestr, "%02d:%02d:%02d:%03d", | |
dfd8c04e | 1181 | dev->h, dev->m, dev->s, dev->ms); |
1e6dd65e | 1182 | |
5a037706 | 1183 | videobuf_queue_vmalloc_init(&fh->vb_vidq, &vivi_video_qops, |
55862ac9 | 1184 | NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED, |
543323bc | 1185 | sizeof(struct vivi_buffer), fh); |
1e6dd65e | 1186 | |
78718e5d BP |
1187 | vivi_start_thread(fh); |
1188 | ||
1e6dd65e MCC |
1189 | return 0; |
1190 | } | |
1191 | ||
1192 | static ssize_t | |
1193 | vivi_read(struct file *file, char __user *data, size_t count, loff_t *ppos) | |
1194 | { | |
543323bc | 1195 | struct vivi_fh *fh = file->private_data; |
1e6dd65e | 1196 | |
543323bc | 1197 | if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
acb09af4 | 1198 | return videobuf_read_stream(&fh->vb_vidq, data, count, ppos, 0, |
1e6dd65e MCC |
1199 | file->f_flags & O_NONBLOCK); |
1200 | } | |
1201 | return 0; | |
1202 | } | |
1203 | ||
1204 | static unsigned int | |
1205 | vivi_poll(struct file *file, struct poll_table_struct *wait) | |
1206 | { | |
c820cc45 | 1207 | struct vivi_fh *fh = file->private_data; |
6c2f9901 | 1208 | struct vivi_dev *dev = fh->dev; |
85c7c70b | 1209 | struct videobuf_queue *q = &fh->vb_vidq; |
1e6dd65e | 1210 | |
7e28adb2 | 1211 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e MCC |
1212 | |
1213 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) | |
1214 | return POLLERR; | |
1215 | ||
85c7c70b | 1216 | return videobuf_poll_stream(file, q, wait); |
1e6dd65e MCC |
1217 | } |
1218 | ||
bec43661 | 1219 | static int vivi_close(struct file *file) |
1e6dd65e | 1220 | { |
c820cc45 MCC |
1221 | struct vivi_fh *fh = file->private_data; |
1222 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
1223 | struct vivi_dmaqueue *vidq = &dev->vidq; |
1224 | ||
bec43661 | 1225 | int minor = video_devdata(file)->minor; |
1e6dd65e MCC |
1226 | |
1227 | vivi_stop_thread(vidq); | |
053fcb60 | 1228 | videobuf_stop(&fh->vb_vidq); |
1e6dd65e MCC |
1229 | videobuf_mmap_free(&fh->vb_vidq); |
1230 | ||
55712ff7 | 1231 | kfree(fh); |
1e6dd65e | 1232 | |
aa9dbac4 | 1233 | mutex_lock(&dev->mutex); |
1e6dd65e | 1234 | dev->users--; |
aa9dbac4 | 1235 | mutex_unlock(&dev->mutex); |
1e6dd65e | 1236 | |
6c2f9901 MCC |
1237 | dprintk(dev, 1, "close called (minor=%d, users=%d)\n", |
1238 | minor, dev->users); | |
1e6dd65e MCC |
1239 | |
1240 | return 0; | |
1241 | } | |
1242 | ||
543323bc | 1243 | static int vivi_mmap(struct file *file, struct vm_area_struct *vma) |
1e6dd65e | 1244 | { |
6c2f9901 MCC |
1245 | struct vivi_fh *fh = file->private_data; |
1246 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
1247 | int ret; |
1248 | ||
6c2f9901 | 1249 | dprintk(dev, 1, "mmap called, vma=0x%08lx\n", (unsigned long)vma); |
1e6dd65e | 1250 | |
543323bc | 1251 | ret = videobuf_mmap_mapper(&fh->vb_vidq, vma); |
1e6dd65e | 1252 | |
6c2f9901 | 1253 | dprintk(dev, 1, "vma start=0x%08lx, size=%ld, ret=%d\n", |
1e6dd65e MCC |
1254 | (unsigned long)vma->vm_start, |
1255 | (unsigned long)vma->vm_end-(unsigned long)vma->vm_start, | |
1256 | ret); | |
1257 | ||
1258 | return ret; | |
1259 | } | |
1260 | ||
bec43661 | 1261 | static const struct v4l2_file_operations vivi_fops = { |
1e6dd65e MCC |
1262 | .owner = THIS_MODULE, |
1263 | .open = vivi_open, | |
f905c442 | 1264 | .release = vivi_close, |
1e6dd65e MCC |
1265 | .read = vivi_read, |
1266 | .poll = vivi_poll, | |
c820cc45 | 1267 | .ioctl = video_ioctl2, /* V4L2 ioctl handler */ |
5a037706 | 1268 | .mmap = vivi_mmap, |
1e6dd65e MCC |
1269 | }; |
1270 | ||
a399810c | 1271 | static const struct v4l2_ioctl_ops vivi_ioctl_ops = { |
c820cc45 | 1272 | .vidioc_querycap = vidioc_querycap, |
78b526a4 HV |
1273 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, |
1274 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
1275 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
1276 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
c820cc45 MCC |
1277 | .vidioc_reqbufs = vidioc_reqbufs, |
1278 | .vidioc_querybuf = vidioc_querybuf, | |
1279 | .vidioc_qbuf = vidioc_qbuf, | |
1280 | .vidioc_dqbuf = vidioc_dqbuf, | |
1281 | .vidioc_s_std = vidioc_s_std, | |
1282 | .vidioc_enum_input = vidioc_enum_input, | |
1283 | .vidioc_g_input = vidioc_g_input, | |
1284 | .vidioc_s_input = vidioc_s_input, | |
1285 | .vidioc_queryctrl = vidioc_queryctrl, | |
1286 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
1287 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
1288 | .vidioc_streamon = vidioc_streamon, | |
1289 | .vidioc_streamoff = vidioc_streamoff, | |
0dfa9abd | 1290 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
c820cc45 MCC |
1291 | .vidiocgmbuf = vidiocgmbuf, |
1292 | #endif | |
a399810c HV |
1293 | }; |
1294 | ||
1295 | static struct video_device vivi_template = { | |
1296 | .name = "vivi", | |
a399810c HV |
1297 | .fops = &vivi_fops, |
1298 | .ioctl_ops = &vivi_ioctl_ops, | |
1299 | .minor = -1, | |
1300 | .release = video_device_release, | |
1301 | ||
784c668b | 1302 | .tvnorms = V4L2_STD_525_60, |
e75f9cee | 1303 | .current_norm = V4L2_STD_NTSC_M, |
1e6dd65e | 1304 | }; |
5ab6c9af | 1305 | |
c820cc45 | 1306 | /* ----------------------------------------------------------------- |
1e6dd65e MCC |
1307 | Initialization and module stuff |
1308 | ------------------------------------------------------------------*/ | |
1309 | ||
5ab6c9af HV |
1310 | static int vivi_release(void) |
1311 | { | |
1312 | struct vivi_dev *dev; | |
1313 | struct list_head *list; | |
980d4f17 | 1314 | |
5ab6c9af HV |
1315 | while (!list_empty(&vivi_devlist)) { |
1316 | list = vivi_devlist.next; | |
1317 | list_del(list); | |
1318 | dev = list_entry(list, struct vivi_dev, vivi_devlist); | |
1319 | ||
1320 | v4l2_info(&dev->v4l2_dev, "unregistering /dev/video%d\n", | |
1321 | dev->vfd->num); | |
1322 | video_unregister_device(dev->vfd); | |
1323 | v4l2_device_unregister(&dev->v4l2_dev); | |
1324 | kfree(dev); | |
1325 | } | |
1326 | ||
1327 | return 0; | |
1328 | } | |
1329 | ||
c41ee24b | 1330 | static int __init vivi_create_instance(int inst) |
1e6dd65e | 1331 | { |
1e6dd65e | 1332 | struct vivi_dev *dev; |
f905c442 | 1333 | struct video_device *vfd; |
c41ee24b | 1334 | int ret, i; |
1e6dd65e | 1335 | |
5ab6c9af HV |
1336 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
1337 | if (!dev) | |
1338 | return -ENOMEM; | |
980d4f17 | 1339 | |
5ab6c9af | 1340 | snprintf(dev->v4l2_dev.name, sizeof(dev->v4l2_dev.name), |
c41ee24b | 1341 | "%s-%03d", VIVI_MODULE_NAME, inst); |
5ab6c9af HV |
1342 | ret = v4l2_device_register(NULL, &dev->v4l2_dev); |
1343 | if (ret) | |
1344 | goto free_dev; | |
1e6dd65e | 1345 | |
5ab6c9af HV |
1346 | /* init video dma queues */ |
1347 | INIT_LIST_HEAD(&dev->vidq.active); | |
1348 | init_waitqueue_head(&dev->vidq.wq); | |
1e6dd65e | 1349 | |
5ab6c9af HV |
1350 | /* initialize locks */ |
1351 | spin_lock_init(&dev->slock); | |
1352 | mutex_init(&dev->mutex); | |
1e6dd65e | 1353 | |
5ab6c9af HV |
1354 | ret = -ENOMEM; |
1355 | vfd = video_device_alloc(); | |
1356 | if (!vfd) | |
1357 | goto unreg_dev; | |
55712ff7 | 1358 | |
5ab6c9af | 1359 | *vfd = vivi_template; |
c285addb | 1360 | vfd->debug = debug; |
55712ff7 | 1361 | |
5ab6c9af HV |
1362 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr); |
1363 | if (ret < 0) | |
1364 | goto rel_vdev; | |
980d4f17 | 1365 | |
5ab6c9af | 1366 | video_set_drvdata(vfd, dev); |
980d4f17 | 1367 | |
c41ee24b HV |
1368 | /* Set all controls to their default value. */ |
1369 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
1370 | dev->qctl_regs[i] = vivi_qctrl[i].default_value; | |
1371 | ||
5ab6c9af HV |
1372 | /* Now that everything is fine, let's add it to device list */ |
1373 | list_add_tail(&dev->vivi_devlist, &vivi_devlist); | |
980d4f17 | 1374 | |
5ab6c9af HV |
1375 | snprintf(vfd->name, sizeof(vfd->name), "%s (%i)", |
1376 | vivi_template.name, vfd->num); | |
55712ff7 | 1377 | |
5ab6c9af HV |
1378 | if (video_nr >= 0) |
1379 | video_nr++; | |
f905c442 | 1380 | |
5ab6c9af HV |
1381 | dev->vfd = vfd; |
1382 | v4l2_info(&dev->v4l2_dev, "V4L2 device registered as /dev/video%d\n", | |
1383 | vfd->num); | |
1384 | return 0; | |
1385 | ||
1386 | rel_vdev: | |
1387 | video_device_release(vfd); | |
1388 | unreg_dev: | |
1389 | v4l2_device_unregister(&dev->v4l2_dev); | |
1390 | free_dev: | |
1391 | kfree(dev); | |
1392 | return ret; | |
1393 | } | |
f905c442 | 1394 | |
5ab6c9af HV |
1395 | /* This routine allocates from 1 to n_devs virtual drivers. |
1396 | ||
1397 | The real maximum number of virtual drivers will depend on how many drivers | |
1398 | will succeed. This is limited to the maximum number of devices that | |
1399 | videodev supports, which is equal to VIDEO_NUM_DEVICES. | |
1400 | */ | |
1401 | static int __init vivi_init(void) | |
1402 | { | |
9185cbfc | 1403 | int ret = 0, i; |
5ab6c9af HV |
1404 | |
1405 | if (n_devs <= 0) | |
1406 | n_devs = 1; | |
1407 | ||
1408 | for (i = 0; i < n_devs; i++) { | |
1409 | ret = vivi_create_instance(i); | |
1410 | if (ret) { | |
1411 | /* If some instantiations succeeded, keep driver */ | |
1412 | if (i) | |
1413 | ret = 0; | |
1414 | break; | |
1415 | } | |
55712ff7 | 1416 | } |
f905c442 | 1417 | |
55712ff7 | 1418 | if (ret < 0) { |
55712ff7 | 1419 | printk(KERN_INFO "Error %d while loading vivi driver\n", ret); |
5ab6c9af HV |
1420 | return ret; |
1421 | } | |
1422 | ||
1423 | printk(KERN_INFO "Video Technology Magazine Virtual Video " | |
745271ae CK |
1424 | "Capture Board ver %u.%u.%u successfully loaded.\n", |
1425 | (VIVI_VERSION >> 16) & 0xFF, (VIVI_VERSION >> 8) & 0xFF, | |
1426 | VIVI_VERSION & 0xFF); | |
980d4f17 | 1427 | |
5ab6c9af HV |
1428 | /* n_devs will reflect the actual number of allocated devices */ |
1429 | n_devs = i; | |
980d4f17 | 1430 | |
1e6dd65e MCC |
1431 | return ret; |
1432 | } | |
1433 | ||
1434 | static void __exit vivi_exit(void) | |
1435 | { | |
55712ff7 | 1436 | vivi_release(); |
1e6dd65e MCC |
1437 | } |
1438 | ||
1439 | module_init(vivi_init); | |
1440 | module_exit(vivi_exit); |