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> |
1e6dd65e MCC |
36 | #include <linux/kthread.h> |
37 | #include <linux/highmem.h> | |
7dfb7103 | 38 | #include <linux/freezer.h> |
5ab6c9af HV |
39 | #include <media/videobuf-vmalloc.h> |
40 | #include <media/v4l2-device.h> | |
41 | #include <media/v4l2-ioctl.h> | |
42 | #include "font.h" | |
1e6dd65e | 43 | |
584ce48d | 44 | #define VIVI_MODULE_NAME "vivi" |
745271ae | 45 | |
1e6dd65e MCC |
46 | /* Wake up at about 30 fps */ |
47 | #define WAKE_NUMERATOR 30 | |
48 | #define WAKE_DENOMINATOR 1001 | |
49 | #define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */ | |
50 | ||
1e6dd65e | 51 | #define VIVI_MAJOR_VERSION 0 |
5ab6c9af | 52 | #define VIVI_MINOR_VERSION 6 |
1e6dd65e | 53 | #define VIVI_RELEASE 0 |
543323bc MCC |
54 | #define VIVI_VERSION \ |
55 | KERNEL_VERSION(VIVI_MAJOR_VERSION, VIVI_MINOR_VERSION, VIVI_RELEASE) | |
1e6dd65e | 56 | |
5ab6c9af HV |
57 | MODULE_DESCRIPTION("Video Technology Magazine Virtual Video Capture Board"); |
58 | MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol"); | |
59 | MODULE_LICENSE("Dual BSD/GPL"); | |
60 | ||
61 | static unsigned video_nr = -1; | |
62 | module_param(video_nr, uint, 0644); | |
63 | MODULE_PARM_DESC(video_nr, "videoX start number, -1 is autodetect"); | |
64 | ||
65 | static unsigned n_devs = 1; | |
66 | module_param(n_devs, uint, 0644); | |
67 | MODULE_PARM_DESC(n_devs, "number of video devices to create"); | |
68 | ||
69 | static unsigned debug; | |
70 | module_param(debug, uint, 0644); | |
71 | MODULE_PARM_DESC(debug, "activates debug info"); | |
72 | ||
73 | static unsigned int vid_limit = 16; | |
74 | module_param(vid_limit, uint, 0644); | |
75 | MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes"); | |
76 | ||
1e6dd65e MCC |
77 | |
78 | /* supported controls */ | |
79 | static struct v4l2_queryctrl vivi_qctrl[] = { | |
80 | { | |
81 | .id = V4L2_CID_AUDIO_VOLUME, | |
82 | .name = "Volume", | |
83 | .minimum = 0, | |
84 | .maximum = 65535, | |
85 | .step = 65535/100, | |
86 | .default_value = 65535, | |
87 | .flags = 0, | |
88 | .type = V4L2_CTRL_TYPE_INTEGER, | |
543323bc | 89 | }, { |
1e6dd65e MCC |
90 | .id = V4L2_CID_BRIGHTNESS, |
91 | .type = V4L2_CTRL_TYPE_INTEGER, | |
92 | .name = "Brightness", | |
93 | .minimum = 0, | |
94 | .maximum = 255, | |
95 | .step = 1, | |
96 | .default_value = 127, | |
97 | .flags = 0, | |
98 | }, { | |
99 | .id = V4L2_CID_CONTRAST, | |
100 | .type = V4L2_CTRL_TYPE_INTEGER, | |
101 | .name = "Contrast", | |
102 | .minimum = 0, | |
103 | .maximum = 255, | |
104 | .step = 0x1, | |
105 | .default_value = 0x10, | |
106 | .flags = 0, | |
107 | }, { | |
108 | .id = V4L2_CID_SATURATION, | |
109 | .type = V4L2_CTRL_TYPE_INTEGER, | |
110 | .name = "Saturation", | |
111 | .minimum = 0, | |
112 | .maximum = 255, | |
113 | .step = 0x1, | |
114 | .default_value = 127, | |
115 | .flags = 0, | |
116 | }, { | |
117 | .id = V4L2_CID_HUE, | |
118 | .type = V4L2_CTRL_TYPE_INTEGER, | |
119 | .name = "Hue", | |
120 | .minimum = -128, | |
121 | .maximum = 127, | |
122 | .step = 0x1, | |
123 | .default_value = 0, | |
124 | .flags = 0, | |
125 | } | |
126 | }; | |
127 | ||
128 | static int qctl_regs[ARRAY_SIZE(vivi_qctrl)]; | |
129 | ||
5ab6c9af HV |
130 | #define dprintk(dev, level, fmt, arg...) \ |
131 | v4l2_dbg(level, debug, &dev->v4l2_dev, fmt, ## arg) | |
1e6dd65e MCC |
132 | |
133 | /* ------------------------------------------------------------------ | |
134 | Basic structures | |
135 | ------------------------------------------------------------------*/ | |
136 | ||
137 | struct vivi_fmt { | |
138 | char *name; | |
139 | u32 fourcc; /* v4l2 format id */ | |
140 | int depth; | |
141 | }; | |
142 | ||
d891f475 MD |
143 | static struct vivi_fmt formats[] = { |
144 | { | |
145 | .name = "4:2:2, packed, YUYV", | |
146 | .fourcc = V4L2_PIX_FMT_YUYV, | |
147 | .depth = 16, | |
148 | }, | |
fca36bab MD |
149 | { |
150 | .name = "4:2:2, packed, UYVY", | |
151 | .fourcc = V4L2_PIX_FMT_UYVY, | |
152 | .depth = 16, | |
153 | }, | |
aeadb5d4 MD |
154 | { |
155 | .name = "RGB565 (LE)", | |
156 | .fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */ | |
157 | .depth = 16, | |
158 | }, | |
159 | { | |
160 | .name = "RGB565 (BE)", | |
161 | .fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */ | |
162 | .depth = 16, | |
163 | }, | |
def52393 MD |
164 | { |
165 | .name = "RGB555 (LE)", | |
166 | .fourcc = V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */ | |
167 | .depth = 16, | |
168 | }, | |
169 | { | |
170 | .name = "RGB555 (BE)", | |
171 | .fourcc = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */ | |
172 | .depth = 16, | |
173 | }, | |
1e6dd65e MCC |
174 | }; |
175 | ||
d891f475 MD |
176 | static struct vivi_fmt *get_format(struct v4l2_format *f) |
177 | { | |
178 | struct vivi_fmt *fmt; | |
179 | unsigned int k; | |
180 | ||
181 | for (k = 0; k < ARRAY_SIZE(formats); k++) { | |
182 | fmt = &formats[k]; | |
183 | if (fmt->fourcc == f->fmt.pix.pixelformat) | |
184 | break; | |
185 | } | |
186 | ||
187 | if (k == ARRAY_SIZE(formats)) | |
188 | return NULL; | |
189 | ||
190 | return &formats[k]; | |
191 | } | |
192 | ||
1e6dd65e MCC |
193 | struct sg_to_addr { |
194 | int pos; | |
195 | struct scatterlist *sg; | |
196 | }; | |
197 | ||
198 | /* buffer for one video frame */ | |
199 | struct vivi_buffer { | |
200 | /* common v4l buffer stuff -- must be first */ | |
201 | struct videobuf_buffer vb; | |
202 | ||
203 | struct vivi_fmt *fmt; | |
1e6dd65e MCC |
204 | }; |
205 | ||
206 | struct vivi_dmaqueue { | |
207 | struct list_head active; | |
1e6dd65e MCC |
208 | |
209 | /* thread for generating video stream*/ | |
210 | struct task_struct *kthread; | |
211 | wait_queue_head_t wq; | |
212 | /* Counters to control fps rate */ | |
213 | int frame; | |
214 | int ini_jiffies; | |
215 | }; | |
216 | ||
217 | static LIST_HEAD(vivi_devlist); | |
218 | ||
219 | struct vivi_dev { | |
220 | struct list_head vivi_devlist; | |
5ab6c9af | 221 | struct v4l2_device v4l2_dev; |
1e6dd65e | 222 | |
55862ac9 | 223 | spinlock_t slock; |
aa9dbac4 | 224 | struct mutex mutex; |
1e6dd65e MCC |
225 | |
226 | int users; | |
227 | ||
228 | /* various device info */ | |
f905c442 | 229 | struct video_device *vfd; |
1e6dd65e MCC |
230 | |
231 | struct vivi_dmaqueue vidq; | |
232 | ||
233 | /* Several counters */ | |
dfd8c04e MCC |
234 | int h, m, s, ms; |
235 | unsigned long jiffies; | |
1e6dd65e | 236 | char timestr[13]; |
025341d4 MCC |
237 | |
238 | int mv_count; /* Controls bars movement */ | |
e164b58a MCC |
239 | |
240 | /* Input Number */ | |
241 | int input; | |
1e6dd65e MCC |
242 | }; |
243 | ||
244 | struct vivi_fh { | |
245 | struct vivi_dev *dev; | |
246 | ||
247 | /* video capture */ | |
248 | struct vivi_fmt *fmt; | |
543323bc | 249 | unsigned int width, height; |
1e6dd65e MCC |
250 | struct videobuf_queue vb_vidq; |
251 | ||
252 | enum v4l2_buf_type type; | |
74d7c5af | 253 | unsigned char bars[8][3]; |
e164b58a | 254 | int input; /* Input Number on bars */ |
1e6dd65e MCC |
255 | }; |
256 | ||
257 | /* ------------------------------------------------------------------ | |
258 | DMA and thread functions | |
259 | ------------------------------------------------------------------*/ | |
260 | ||
261 | /* Bars and Colors should match positions */ | |
262 | ||
263 | enum colors { | |
264 | WHITE, | |
265 | AMBAR, | |
266 | CYAN, | |
267 | GREEN, | |
268 | MAGENTA, | |
269 | RED, | |
543323bc MCC |
270 | BLUE, |
271 | BLACK, | |
1e6dd65e MCC |
272 | }; |
273 | ||
1e6dd65e | 274 | /* R G B */ |
e164b58a MCC |
275 | #define COLOR_WHITE {204, 204, 204} |
276 | #define COLOR_AMBAR {208, 208, 0} | |
277 | #define COLOR_CIAN { 0, 206, 206} | |
278 | #define COLOR_GREEN { 0, 239, 0} | |
279 | #define COLOR_MAGENTA {239, 0, 239} | |
280 | #define COLOR_RED {205, 0, 0} | |
281 | #define COLOR_BLUE { 0, 0, 255} | |
282 | #define COLOR_BLACK { 0, 0, 0} | |
283 | ||
284 | struct bar_std { | |
285 | u8 bar[8][3]; | |
286 | }; | |
287 | ||
288 | /* Maximum number of bars are 10 - otherwise, the input print code | |
289 | should be modified */ | |
290 | static struct bar_std bars[] = { | |
291 | { /* Standard ITU-R color bar sequence */ | |
292 | { | |
293 | COLOR_WHITE, | |
294 | COLOR_AMBAR, | |
295 | COLOR_CIAN, | |
296 | COLOR_GREEN, | |
297 | COLOR_MAGENTA, | |
298 | COLOR_RED, | |
299 | COLOR_BLUE, | |
300 | COLOR_BLACK, | |
301 | } | |
302 | }, { | |
303 | { | |
304 | COLOR_WHITE, | |
305 | COLOR_AMBAR, | |
306 | COLOR_BLACK, | |
307 | COLOR_WHITE, | |
308 | COLOR_AMBAR, | |
309 | COLOR_BLACK, | |
310 | COLOR_WHITE, | |
311 | COLOR_AMBAR, | |
312 | } | |
313 | }, { | |
314 | { | |
315 | COLOR_WHITE, | |
316 | COLOR_CIAN, | |
317 | COLOR_BLACK, | |
318 | COLOR_WHITE, | |
319 | COLOR_CIAN, | |
320 | COLOR_BLACK, | |
321 | COLOR_WHITE, | |
322 | COLOR_CIAN, | |
323 | } | |
324 | }, { | |
325 | { | |
326 | COLOR_WHITE, | |
327 | COLOR_GREEN, | |
328 | COLOR_BLACK, | |
329 | COLOR_WHITE, | |
330 | COLOR_GREEN, | |
331 | COLOR_BLACK, | |
332 | COLOR_WHITE, | |
333 | COLOR_GREEN, | |
334 | } | |
335 | }, | |
1e6dd65e MCC |
336 | }; |
337 | ||
e164b58a MCC |
338 | #define NUM_INPUTS ARRAY_SIZE(bars) |
339 | ||
543323bc MCC |
340 | #define TO_Y(r, g, b) \ |
341 | (((16829 * r + 33039 * g + 6416 * b + 32768) >> 16) + 16) | |
1e6dd65e | 342 | /* RGB to V(Cr) Color transform */ |
543323bc MCC |
343 | #define TO_V(r, g, b) \ |
344 | (((28784 * r - 24103 * g - 4681 * b + 32768) >> 16) + 128) | |
1e6dd65e | 345 | /* RGB to U(Cb) Color transform */ |
543323bc MCC |
346 | #define TO_U(r, g, b) \ |
347 | (((-9714 * r - 19070 * g + 28784 * b + 32768) >> 16) + 128) | |
1e6dd65e | 348 | |
e164b58a MCC |
349 | #define TSTAMP_MIN_Y 24 |
350 | #define TSTAMP_MAX_Y (TSTAMP_MIN_Y + 15) | |
351 | #define TSTAMP_INPUT_X 10 | |
352 | #define TSTAMP_MIN_X (54 + TSTAMP_INPUT_X) | |
1e6dd65e | 353 | |
74d7c5af MD |
354 | static void gen_twopix(struct vivi_fh *fh, unsigned char *buf, int colorpos) |
355 | { | |
356 | unsigned char r_y, g_u, b_v; | |
357 | unsigned char *p; | |
358 | int color; | |
359 | ||
360 | r_y = fh->bars[colorpos][0]; /* R or precalculated Y */ | |
361 | g_u = fh->bars[colorpos][1]; /* G or precalculated U */ | |
362 | b_v = fh->bars[colorpos][2]; /* B or precalculated V */ | |
363 | ||
364 | for (color = 0; color < 4; color++) { | |
365 | p = buf + color; | |
366 | ||
d891f475 MD |
367 | switch (fh->fmt->fourcc) { |
368 | case V4L2_PIX_FMT_YUYV: | |
369 | switch (color) { | |
370 | case 0: | |
371 | case 2: | |
372 | *p = r_y; | |
373 | break; | |
374 | case 1: | |
375 | *p = g_u; | |
376 | break; | |
377 | case 3: | |
378 | *p = b_v; | |
379 | break; | |
380 | } | |
74d7c5af | 381 | break; |
fca36bab MD |
382 | case V4L2_PIX_FMT_UYVY: |
383 | switch (color) { | |
384 | case 1: | |
385 | case 3: | |
386 | *p = r_y; | |
387 | break; | |
388 | case 0: | |
389 | *p = g_u; | |
390 | break; | |
391 | case 2: | |
392 | *p = b_v; | |
393 | break; | |
394 | } | |
395 | break; | |
aeadb5d4 MD |
396 | case V4L2_PIX_FMT_RGB565: |
397 | switch (color) { | |
398 | case 0: | |
399 | case 2: | |
400 | *p = (g_u << 5) | b_v; | |
401 | break; | |
402 | case 1: | |
403 | case 3: | |
404 | *p = (r_y << 3) | (g_u >> 3); | |
405 | break; | |
406 | } | |
407 | break; | |
408 | case V4L2_PIX_FMT_RGB565X: | |
409 | switch (color) { | |
410 | case 0: | |
411 | case 2: | |
412 | *p = (r_y << 3) | (g_u >> 3); | |
413 | break; | |
414 | case 1: | |
415 | case 3: | |
416 | *p = (g_u << 5) | b_v; | |
417 | break; | |
418 | } | |
419 | break; | |
def52393 MD |
420 | case V4L2_PIX_FMT_RGB555: |
421 | switch (color) { | |
422 | case 0: | |
423 | case 2: | |
424 | *p = (g_u << 5) | b_v; | |
425 | break; | |
426 | case 1: | |
427 | case 3: | |
428 | *p = (r_y << 2) | (g_u >> 3); | |
429 | break; | |
430 | } | |
431 | break; | |
432 | case V4L2_PIX_FMT_RGB555X: | |
433 | switch (color) { | |
434 | case 0: | |
435 | case 2: | |
436 | *p = (r_y << 2) | (g_u >> 3); | |
437 | break; | |
438 | case 1: | |
439 | case 3: | |
440 | *p = (g_u << 5) | b_v; | |
441 | break; | |
442 | } | |
443 | break; | |
74d7c5af MD |
444 | } |
445 | } | |
446 | } | |
447 | ||
448 | static void gen_line(struct vivi_fh *fh, char *basep, int inipos, int wmax, | |
543323bc | 449 | int hmax, int line, int count, char *timestr) |
1e6dd65e | 450 | { |
74d7c5af | 451 | int w, i, j; |
543323bc | 452 | int pos = inipos; |
74d7c5af MD |
453 | char *s; |
454 | u8 chr; | |
1e6dd65e MCC |
455 | |
456 | /* We will just duplicate the second pixel at the packet */ | |
543323bc | 457 | wmax /= 2; |
1e6dd65e MCC |
458 | |
459 | /* Generate a standard color bar pattern */ | |
543323bc MCC |
460 | for (w = 0; w < wmax; w++) { |
461 | int colorpos = ((w + count) * 8/(wmax + 1)) % 8; | |
74d7c5af MD |
462 | |
463 | gen_twopix(fh, basep + pos, colorpos); | |
464 | pos += 4; /* only 16 bpp supported for now */ | |
1e6dd65e MCC |
465 | } |
466 | ||
e164b58a MCC |
467 | /* Prints input entry number */ |
468 | ||
469 | /* Checks if it is possible to input number */ | |
543323bc | 470 | if (TSTAMP_MAX_Y >= hmax) |
1e6dd65e | 471 | goto end; |
e164b58a MCC |
472 | |
473 | if (TSTAMP_INPUT_X + strlen(timestr) >= wmax) | |
474 | goto end; | |
475 | ||
476 | if (line >= TSTAMP_MIN_Y && line <= TSTAMP_MAX_Y) { | |
477 | chr = rom8x16_bits[fh->input * 16 + line - TSTAMP_MIN_Y]; | |
478 | pos = TSTAMP_INPUT_X; | |
479 | for (i = 0; i < 7; i++) { | |
480 | /* Draw white font on black background */ | |
481 | if (chr & 1 << (7 - i)) | |
482 | gen_twopix(fh, basep + pos, WHITE); | |
483 | else | |
484 | gen_twopix(fh, basep + pos, BLACK); | |
485 | pos += 2; | |
486 | } | |
487 | } | |
488 | ||
489 | /* Checks if it is possible to show timestamp */ | |
543323bc | 490 | if (TSTAMP_MIN_X + strlen(timestr) >= wmax) |
1e6dd65e MCC |
491 | goto end; |
492 | ||
493 | /* Print stream time */ | |
543323bc MCC |
494 | if (line >= TSTAMP_MIN_Y && line <= TSTAMP_MAX_Y) { |
495 | j = TSTAMP_MIN_X; | |
496 | for (s = timestr; *s; s++) { | |
497 | chr = rom8x16_bits[(*s-0x30)*16+line-TSTAMP_MIN_Y]; | |
498 | for (i = 0; i < 7; i++) { | |
543323bc | 499 | pos = inipos + j * 2; |
74d7c5af MD |
500 | /* Draw white font on black background */ |
501 | if (chr & 1 << (7 - i)) | |
502 | gen_twopix(fh, basep + pos, WHITE); | |
503 | else | |
504 | gen_twopix(fh, basep + pos, BLACK); | |
1e6dd65e MCC |
505 | j++; |
506 | } | |
507 | } | |
508 | } | |
509 | ||
1e6dd65e | 510 | end: |
b50e7fe9 | 511 | return; |
1e6dd65e | 512 | } |
78718e5d | 513 | |
74d7c5af | 514 | static void vivi_fillbuff(struct vivi_fh *fh, struct vivi_buffer *buf) |
1e6dd65e | 515 | { |
74d7c5af | 516 | struct vivi_dev *dev = fh->dev; |
543323bc | 517 | int h , pos = 0; |
1e6dd65e MCC |
518 | int hmax = buf->vb.height; |
519 | int wmax = buf->vb.width; | |
1e6dd65e | 520 | struct timeval ts; |
5c554e6b | 521 | char *tmpbuf; |
543323bc | 522 | void *vbuf = videobuf_to_vmalloc(&buf->vb); |
b50e7fe9 | 523 | |
5c554e6b | 524 | if (!vbuf) |
5a037706 | 525 | return; |
1e6dd65e | 526 | |
5c554e6b MS |
527 | tmpbuf = kmalloc(wmax * 2, GFP_ATOMIC); |
528 | if (!tmpbuf) | |
78718e5d BP |
529 | return; |
530 | ||
543323bc | 531 | for (h = 0; h < hmax; h++) { |
74d7c5af | 532 | gen_line(fh, tmpbuf, 0, wmax, hmax, h, dev->mv_count, |
3bef5e4a | 533 | dev->timestr); |
78718e5d | 534 | memcpy(vbuf + pos, tmpbuf, wmax * 2); |
1e6dd65e MCC |
535 | pos += wmax*2; |
536 | } | |
537 | ||
025341d4 | 538 | dev->mv_count++; |
3bef5e4a | 539 | |
5a037706 MCC |
540 | kfree(tmpbuf); |
541 | ||
1e6dd65e MCC |
542 | /* Updates stream time */ |
543 | ||
dfd8c04e | 544 | dev->ms += jiffies_to_msecs(jiffies-dev->jiffies); |
543323bc | 545 | dev->jiffies = jiffies; |
dfd8c04e MCC |
546 | if (dev->ms >= 1000) { |
547 | dev->ms -= 1000; | |
1e6dd65e | 548 | dev->s++; |
543323bc MCC |
549 | if (dev->s >= 60) { |
550 | dev->s -= 60; | |
1e6dd65e | 551 | dev->m++; |
543323bc MCC |
552 | if (dev->m > 60) { |
553 | dev->m -= 60; | |
1e6dd65e | 554 | dev->h++; |
543323bc MCC |
555 | if (dev->h > 24) |
556 | dev->h -= 24; | |
1e6dd65e MCC |
557 | } |
558 | } | |
559 | } | |
543323bc | 560 | sprintf(dev->timestr, "%02d:%02d:%02d:%03d", |
dfd8c04e | 561 | dev->h, dev->m, dev->s, dev->ms); |
1e6dd65e | 562 | |
6c2f9901 MCC |
563 | dprintk(dev, 2, "vivifill at %s: Buffer 0x%08lx size= %d\n", |
564 | dev->timestr, (unsigned long)tmpbuf, pos); | |
1e6dd65e MCC |
565 | |
566 | /* Advice that buffer was filled */ | |
1e6dd65e MCC |
567 | buf->vb.field_count++; |
568 | do_gettimeofday(&ts); | |
569 | buf->vb.ts = ts; | |
78718e5d | 570 | buf->vb.state = VIDEOBUF_DONE; |
1e6dd65e MCC |
571 | } |
572 | ||
78718e5d | 573 | static void vivi_thread_tick(struct vivi_fh *fh) |
1e6dd65e | 574 | { |
78718e5d BP |
575 | struct vivi_buffer *buf; |
576 | struct vivi_dev *dev = fh->dev; | |
577 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
1e6dd65e | 578 | |
78718e5d | 579 | unsigned long flags = 0; |
1e6dd65e | 580 | |
78718e5d | 581 | dprintk(dev, 1, "Thread tick\n"); |
1e6dd65e | 582 | |
78718e5d BP |
583 | spin_lock_irqsave(&dev->slock, flags); |
584 | if (list_empty(&dma_q->active)) { | |
585 | dprintk(dev, 1, "No active queue to serve\n"); | |
586 | goto unlock; | |
587 | } | |
1e6dd65e | 588 | |
78718e5d BP |
589 | buf = list_entry(dma_q->active.next, |
590 | struct vivi_buffer, vb.queue); | |
1e6dd65e | 591 | |
78718e5d BP |
592 | /* Nobody is waiting on this buffer, return */ |
593 | if (!waitqueue_active(&buf->vb.done)) | |
594 | goto unlock; | |
1e6dd65e | 595 | |
78718e5d | 596 | list_del(&buf->vb.queue); |
0b600512 | 597 | |
78718e5d BP |
598 | do_gettimeofday(&buf->vb.ts); |
599 | ||
600 | /* Fill buffer */ | |
74d7c5af | 601 | vivi_fillbuff(fh, buf); |
78718e5d BP |
602 | dprintk(dev, 1, "filled buffer %p\n", buf); |
603 | ||
604 | wake_up(&buf->vb.done); | |
605 | dprintk(dev, 2, "[%p/%d] wakeup\n", buf, buf->vb. i); | |
606 | unlock: | |
607 | spin_unlock_irqrestore(&dev->slock, flags); | |
608 | return; | |
1e6dd65e MCC |
609 | } |
610 | ||
6594ad82 MCC |
611 | #define frames_to_ms(frames) \ |
612 | ((frames * WAKE_NUMERATOR * 1000) / WAKE_DENOMINATOR) | |
613 | ||
78718e5d | 614 | static void vivi_sleep(struct vivi_fh *fh) |
1e6dd65e | 615 | { |
78718e5d BP |
616 | struct vivi_dev *dev = fh->dev; |
617 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
618 | int timeout; | |
1e6dd65e MCC |
619 | DECLARE_WAITQUEUE(wait, current); |
620 | ||
7e28adb2 | 621 | dprintk(dev, 1, "%s dma_q=0x%08lx\n", __func__, |
6c2f9901 | 622 | (unsigned long)dma_q); |
1e6dd65e MCC |
623 | |
624 | add_wait_queue(&dma_q->wq, &wait); | |
6594ad82 MCC |
625 | if (kthread_should_stop()) |
626 | goto stop_task; | |
627 | ||
6594ad82 | 628 | /* Calculate time to wake up */ |
78718e5d | 629 | timeout = msecs_to_jiffies(frames_to_ms(1)); |
6594ad82 | 630 | |
78718e5d | 631 | vivi_thread_tick(fh); |
6594ad82 MCC |
632 | |
633 | schedule_timeout_interruptible(timeout); | |
1e6dd65e | 634 | |
6594ad82 | 635 | stop_task: |
1e6dd65e MCC |
636 | remove_wait_queue(&dma_q->wq, &wait); |
637 | try_to_freeze(); | |
638 | } | |
639 | ||
972c3517 | 640 | static int vivi_thread(void *data) |
1e6dd65e | 641 | { |
78718e5d BP |
642 | struct vivi_fh *fh = data; |
643 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e | 644 | |
6c2f9901 | 645 | dprintk(dev, 1, "thread started\n"); |
1e6dd65e | 646 | |
83144186 | 647 | set_freezable(); |
0b600512 | 648 | |
1e6dd65e | 649 | for (;;) { |
78718e5d | 650 | vivi_sleep(fh); |
1e6dd65e MCC |
651 | |
652 | if (kthread_should_stop()) | |
653 | break; | |
654 | } | |
6c2f9901 | 655 | dprintk(dev, 1, "thread: exit\n"); |
1e6dd65e MCC |
656 | return 0; |
657 | } | |
658 | ||
78718e5d | 659 | static int vivi_start_thread(struct vivi_fh *fh) |
1e6dd65e | 660 | { |
78718e5d BP |
661 | struct vivi_dev *dev = fh->dev; |
662 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
6c2f9901 | 663 | |
543323bc MCC |
664 | dma_q->frame = 0; |
665 | dma_q->ini_jiffies = jiffies; | |
1e6dd65e | 666 | |
7e28adb2 | 667 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e | 668 | |
78718e5d | 669 | dma_q->kthread = kthread_run(vivi_thread, fh, "vivi"); |
1e6dd65e | 670 | |
054afee4 | 671 | if (IS_ERR(dma_q->kthread)) { |
5ab6c9af | 672 | v4l2_err(&dev->v4l2_dev, "kernel_thread() failed\n"); |
054afee4 | 673 | return PTR_ERR(dma_q->kthread); |
1e6dd65e | 674 | } |
0b600512 MCC |
675 | /* Wakes thread */ |
676 | wake_up_interruptible(&dma_q->wq); | |
677 | ||
7e28adb2 | 678 | dprintk(dev, 1, "returning from %s\n", __func__); |
1e6dd65e MCC |
679 | return 0; |
680 | } | |
681 | ||
972c3517 | 682 | static void vivi_stop_thread(struct vivi_dmaqueue *dma_q) |
1e6dd65e | 683 | { |
6c2f9901 MCC |
684 | struct vivi_dev *dev = container_of(dma_q, struct vivi_dev, vidq); |
685 | ||
7e28adb2 | 686 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e MCC |
687 | /* shutdown control thread */ |
688 | if (dma_q->kthread) { | |
689 | kthread_stop(dma_q->kthread); | |
543323bc | 690 | dma_q->kthread = NULL; |
1e6dd65e MCC |
691 | } |
692 | } | |
693 | ||
1e6dd65e MCC |
694 | /* ------------------------------------------------------------------ |
695 | Videobuf operations | |
696 | ------------------------------------------------------------------*/ | |
697 | static int | |
698 | buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) | |
699 | { | |
6c2f9901 MCC |
700 | struct vivi_fh *fh = vq->priv_data; |
701 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
702 | |
703 | *size = fh->width*fh->height*2; | |
704 | ||
705 | if (0 == *count) | |
706 | *count = 32; | |
6bb2790f | 707 | |
1e6dd65e MCC |
708 | while (*size * *count > vid_limit * 1024 * 1024) |
709 | (*count)--; | |
6bb2790f | 710 | |
7e28adb2 | 711 | dprintk(dev, 1, "%s, count=%d, size=%d\n", __func__, |
6c2f9901 | 712 | *count, *size); |
6bb2790f | 713 | |
1e6dd65e MCC |
714 | return 0; |
715 | } | |
716 | ||
972c3517 | 717 | static void free_buffer(struct videobuf_queue *vq, struct vivi_buffer *buf) |
1e6dd65e | 718 | { |
6c2f9901 MCC |
719 | struct vivi_fh *fh = vq->priv_data; |
720 | struct vivi_dev *dev = fh->dev; | |
721 | ||
7e28adb2 | 722 | dprintk(dev, 1, "%s, state: %i\n", __func__, buf->vb.state); |
1e6dd65e MCC |
723 | |
724 | if (in_interrupt()) | |
725 | BUG(); | |
726 | ||
5a037706 | 727 | videobuf_vmalloc_free(&buf->vb); |
fbde31d5 | 728 | dprintk(dev, 1, "free_buffer: freed\n"); |
0fc0686e | 729 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
1e6dd65e MCC |
730 | } |
731 | ||
732 | #define norm_maxw() 1024 | |
733 | #define norm_maxh() 768 | |
734 | static int | |
735 | buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, | |
736 | enum v4l2_field field) | |
737 | { | |
738 | struct vivi_fh *fh = vq->priv_data; | |
6c2f9901 | 739 | struct vivi_dev *dev = fh->dev; |
543323bc | 740 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
78718e5d | 741 | int rc; |
1e6dd65e | 742 | |
7e28adb2 | 743 | dprintk(dev, 1, "%s, field=%d\n", __func__, field); |
1e6dd65e MCC |
744 | |
745 | BUG_ON(NULL == fh->fmt); | |
78718e5d | 746 | |
1e6dd65e MCC |
747 | if (fh->width < 48 || fh->width > norm_maxw() || |
748 | fh->height < 32 || fh->height > norm_maxh()) | |
749 | return -EINVAL; | |
78718e5d | 750 | |
1e6dd65e MCC |
751 | buf->vb.size = fh->width*fh->height*2; |
752 | if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) | |
753 | return -EINVAL; | |
754 | ||
78718e5d BP |
755 | /* These properties only change when queue is idle, see s_fmt */ |
756 | buf->fmt = fh->fmt; | |
757 | buf->vb.width = fh->width; | |
758 | buf->vb.height = fh->height; | |
759 | buf->vb.field = field; | |
1e6dd65e | 760 | |
0fc0686e | 761 | if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { |
543323bc MCC |
762 | rc = videobuf_iolock(vq, &buf->vb, NULL); |
763 | if (rc < 0) | |
1e6dd65e MCC |
764 | goto fail; |
765 | } | |
766 | ||
0fc0686e | 767 | buf->vb.state = VIDEOBUF_PREPARED; |
1e6dd65e | 768 | |
1e6dd65e MCC |
769 | return 0; |
770 | ||
771 | fail: | |
543323bc | 772 | free_buffer(vq, buf); |
1e6dd65e MCC |
773 | return rc; |
774 | } | |
775 | ||
776 | static void | |
777 | buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) | |
778 | { | |
543323bc MCC |
779 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
780 | struct vivi_fh *fh = vq->priv_data; | |
781 | struct vivi_dev *dev = fh->dev; | |
78718e5d BP |
782 | struct vivi_dmaqueue *vidq = &dev->vidq; |
783 | ||
7e28adb2 | 784 | dprintk(dev, 1, "%s\n", __func__); |
78718e5d BP |
785 | |
786 | buf->vb.state = VIDEOBUF_QUEUED; | |
787 | list_add_tail(&buf->vb.queue, &vidq->active); | |
1e6dd65e MCC |
788 | } |
789 | ||
543323bc MCC |
790 | static void buffer_release(struct videobuf_queue *vq, |
791 | struct videobuf_buffer *vb) | |
1e6dd65e | 792 | { |
543323bc | 793 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
1e6dd65e | 794 | struct vivi_fh *fh = vq->priv_data; |
543323bc | 795 | struct vivi_dev *dev = (struct vivi_dev *)fh->dev; |
1e6dd65e | 796 | |
7e28adb2 | 797 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e | 798 | |
543323bc | 799 | free_buffer(vq, buf); |
1e6dd65e MCC |
800 | } |
801 | ||
1e6dd65e MCC |
802 | static struct videobuf_queue_ops vivi_video_qops = { |
803 | .buf_setup = buffer_setup, | |
804 | .buf_prepare = buffer_prepare, | |
805 | .buf_queue = buffer_queue, | |
806 | .buf_release = buffer_release, | |
1e6dd65e MCC |
807 | }; |
808 | ||
c820cc45 MCC |
809 | /* ------------------------------------------------------------------ |
810 | IOCTL vidioc handling | |
811 | ------------------------------------------------------------------*/ | |
543323bc | 812 | static int vidioc_querycap(struct file *file, void *priv, |
c820cc45 MCC |
813 | struct v4l2_capability *cap) |
814 | { | |
5ab6c9af HV |
815 | struct vivi_fh *fh = priv; |
816 | struct vivi_dev *dev = fh->dev; | |
817 | ||
c820cc45 MCC |
818 | strcpy(cap->driver, "vivi"); |
819 | strcpy(cap->card, "vivi"); | |
5ab6c9af | 820 | strlcpy(cap->bus_info, dev->v4l2_dev.name, sizeof(cap->bus_info)); |
c820cc45 MCC |
821 | cap->version = VIVI_VERSION; |
822 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | | |
823 | V4L2_CAP_STREAMING | | |
824 | V4L2_CAP_READWRITE; | |
825 | return 0; | |
826 | } | |
827 | ||
78b526a4 | 828 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 MCC |
829 | struct v4l2_fmtdesc *f) |
830 | { | |
d891f475 MD |
831 | struct vivi_fmt *fmt; |
832 | ||
833 | if (f->index >= ARRAY_SIZE(formats)) | |
c820cc45 MCC |
834 | return -EINVAL; |
835 | ||
d891f475 MD |
836 | fmt = &formats[f->index]; |
837 | ||
838 | strlcpy(f->description, fmt->name, sizeof(f->description)); | |
839 | f->pixelformat = fmt->fourcc; | |
c820cc45 MCC |
840 | return 0; |
841 | } | |
842 | ||
78b526a4 | 843 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 MCC |
844 | struct v4l2_format *f) |
845 | { | |
543323bc | 846 | struct vivi_fh *fh = priv; |
c820cc45 MCC |
847 | |
848 | f->fmt.pix.width = fh->width; | |
849 | f->fmt.pix.height = fh->height; | |
850 | f->fmt.pix.field = fh->vb_vidq.field; | |
851 | f->fmt.pix.pixelformat = fh->fmt->fourcc; | |
852 | f->fmt.pix.bytesperline = | |
853 | (f->fmt.pix.width * fh->fmt->depth) >> 3; | |
854 | f->fmt.pix.sizeimage = | |
855 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
856 | ||
857 | return (0); | |
858 | } | |
859 | ||
78b526a4 | 860 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, |
1e6dd65e MCC |
861 | struct v4l2_format *f) |
862 | { | |
6c2f9901 MCC |
863 | struct vivi_fh *fh = priv; |
864 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
865 | struct vivi_fmt *fmt; |
866 | enum v4l2_field field; | |
867 | unsigned int maxw, maxh; | |
868 | ||
d891f475 MD |
869 | fmt = get_format(f); |
870 | if (!fmt) { | |
871 | dprintk(dev, 1, "Fourcc format (0x%08x) invalid.\n", | |
872 | f->fmt.pix.pixelformat); | |
1e6dd65e MCC |
873 | return -EINVAL; |
874 | } | |
1e6dd65e MCC |
875 | |
876 | field = f->fmt.pix.field; | |
877 | ||
878 | if (field == V4L2_FIELD_ANY) { | |
543323bc | 879 | field = V4L2_FIELD_INTERLACED; |
1e6dd65e | 880 | } else if (V4L2_FIELD_INTERLACED != field) { |
6c2f9901 | 881 | dprintk(dev, 1, "Field type invalid.\n"); |
1e6dd65e MCC |
882 | return -EINVAL; |
883 | } | |
884 | ||
885 | maxw = norm_maxw(); | |
886 | maxh = norm_maxh(); | |
887 | ||
888 | f->fmt.pix.field = field; | |
889 | if (f->fmt.pix.height < 32) | |
890 | f->fmt.pix.height = 32; | |
891 | if (f->fmt.pix.height > maxh) | |
892 | f->fmt.pix.height = maxh; | |
893 | if (f->fmt.pix.width < 48) | |
894 | f->fmt.pix.width = 48; | |
895 | if (f->fmt.pix.width > maxw) | |
896 | f->fmt.pix.width = maxw; | |
897 | f->fmt.pix.width &= ~0x03; | |
898 | f->fmt.pix.bytesperline = | |
899 | (f->fmt.pix.width * fmt->depth) >> 3; | |
900 | f->fmt.pix.sizeimage = | |
901 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
902 | ||
903 | return 0; | |
904 | } | |
905 | ||
e164b58a MCC |
906 | /* precalculate color bar values to speed up rendering */ |
907 | static void precalculate_bars(struct vivi_fh *fh) | |
1e6dd65e | 908 | { |
e164b58a | 909 | struct vivi_dev *dev = fh->dev; |
74d7c5af | 910 | unsigned char r, g, b; |
d891f475 | 911 | int k, is_yuv; |
78718e5d | 912 | |
e164b58a | 913 | fh->input = dev->input; |
c820cc45 | 914 | |
74d7c5af | 915 | for (k = 0; k < 8; k++) { |
e164b58a MCC |
916 | r = bars[fh->input].bar[k][0]; |
917 | g = bars[fh->input].bar[k][1]; | |
918 | b = bars[fh->input].bar[k][2]; | |
d891f475 | 919 | is_yuv = 0; |
74d7c5af | 920 | |
d891f475 MD |
921 | switch (fh->fmt->fourcc) { |
922 | case V4L2_PIX_FMT_YUYV: | |
fca36bab | 923 | case V4L2_PIX_FMT_UYVY: |
d891f475 MD |
924 | is_yuv = 1; |
925 | break; | |
aeadb5d4 MD |
926 | case V4L2_PIX_FMT_RGB565: |
927 | case V4L2_PIX_FMT_RGB565X: | |
928 | r >>= 3; | |
929 | g >>= 2; | |
930 | b >>= 3; | |
931 | break; | |
def52393 MD |
932 | case V4L2_PIX_FMT_RGB555: |
933 | case V4L2_PIX_FMT_RGB555X: | |
934 | r >>= 3; | |
935 | g >>= 3; | |
936 | b >>= 3; | |
937 | break; | |
d891f475 MD |
938 | } |
939 | ||
940 | if (is_yuv) { | |
941 | fh->bars[k][0] = TO_Y(r, g, b); /* Luma */ | |
942 | fh->bars[k][1] = TO_U(r, g, b); /* Cb */ | |
943 | fh->bars[k][2] = TO_V(r, g, b); /* Cr */ | |
944 | } else { | |
945 | fh->bars[k][0] = r; | |
946 | fh->bars[k][1] = g; | |
947 | fh->bars[k][2] = b; | |
948 | } | |
74d7c5af MD |
949 | } |
950 | ||
e164b58a MCC |
951 | } |
952 | ||
953 | /*FIXME: This seems to be generic enough to be at videodev2 */ | |
954 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, | |
955 | struct v4l2_format *f) | |
956 | { | |
957 | struct vivi_fh *fh = priv; | |
958 | struct videobuf_queue *q = &fh->vb_vidq; | |
959 | ||
960 | int ret = vidioc_try_fmt_vid_cap(file, fh, f); | |
961 | if (ret < 0) | |
962 | return ret; | |
963 | ||
964 | mutex_lock(&q->vb_lock); | |
965 | ||
966 | if (videobuf_queue_is_busy(&fh->vb_vidq)) { | |
967 | dprintk(fh->dev, 1, "%s queue busy\n", __func__); | |
968 | ret = -EBUSY; | |
969 | goto out; | |
970 | } | |
971 | ||
972 | fh->fmt = get_format(f); | |
973 | fh->width = f->fmt.pix.width; | |
974 | fh->height = f->fmt.pix.height; | |
975 | fh->vb_vidq.field = f->fmt.pix.field; | |
976 | fh->type = f->type; | |
977 | ||
978 | precalculate_bars(fh); | |
979 | ||
78718e5d BP |
980 | ret = 0; |
981 | out: | |
982 | mutex_unlock(&q->vb_lock); | |
983 | ||
e164b58a | 984 | return ret; |
1e6dd65e MCC |
985 | } |
986 | ||
543323bc MCC |
987 | static int vidioc_reqbufs(struct file *file, void *priv, |
988 | struct v4l2_requestbuffers *p) | |
1e6dd65e | 989 | { |
543323bc | 990 | struct vivi_fh *fh = priv; |
1e6dd65e | 991 | |
c820cc45 | 992 | return (videobuf_reqbufs(&fh->vb_vidq, p)); |
1e6dd65e MCC |
993 | } |
994 | ||
543323bc | 995 | static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p) |
1e6dd65e | 996 | { |
543323bc | 997 | struct vivi_fh *fh = priv; |
1e6dd65e | 998 | |
c820cc45 MCC |
999 | return (videobuf_querybuf(&fh->vb_vidq, p)); |
1000 | } | |
1e6dd65e | 1001 | |
543323bc | 1002 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
c820cc45 | 1003 | { |
543323bc | 1004 | struct vivi_fh *fh = priv; |
1e6dd65e | 1005 | |
c820cc45 MCC |
1006 | return (videobuf_qbuf(&fh->vb_vidq, p)); |
1007 | } | |
1e6dd65e | 1008 | |
543323bc | 1009 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
c820cc45 | 1010 | { |
543323bc | 1011 | struct vivi_fh *fh = priv; |
1e6dd65e | 1012 | |
c820cc45 MCC |
1013 | return (videobuf_dqbuf(&fh->vb_vidq, p, |
1014 | file->f_flags & O_NONBLOCK)); | |
1015 | } | |
1e6dd65e | 1016 | |
0dfa9abd | 1017 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
543323bc | 1018 | static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf) |
c820cc45 | 1019 | { |
543323bc | 1020 | struct vivi_fh *fh = priv; |
4ceb04e1 | 1021 | |
543323bc | 1022 | return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8); |
c820cc45 MCC |
1023 | } |
1024 | #endif | |
1e6dd65e | 1025 | |
dc46ace1 | 1026 | static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) |
c820cc45 | 1027 | { |
543323bc | 1028 | struct vivi_fh *fh = priv; |
1e6dd65e | 1029 | |
c820cc45 MCC |
1030 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1031 | return -EINVAL; | |
1032 | if (i != fh->type) | |
1033 | return -EINVAL; | |
1e6dd65e | 1034 | |
ba32bd95 | 1035 | return videobuf_streamon(&fh->vb_vidq); |
c820cc45 | 1036 | } |
1e6dd65e | 1037 | |
dc46ace1 | 1038 | static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) |
c820cc45 | 1039 | { |
543323bc | 1040 | struct vivi_fh *fh = priv; |
1e6dd65e | 1041 | |
c820cc45 MCC |
1042 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1043 | return -EINVAL; | |
1044 | if (i != fh->type) | |
1045 | return -EINVAL; | |
1e6dd65e | 1046 | |
ba32bd95 | 1047 | return videobuf_streamoff(&fh->vb_vidq); |
c820cc45 MCC |
1048 | } |
1049 | ||
543323bc | 1050 | static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *i) |
c820cc45 | 1051 | { |
c820cc45 MCC |
1052 | return 0; |
1053 | } | |
1e6dd65e | 1054 | |
c820cc45 | 1055 | /* only one input in this sample driver */ |
543323bc | 1056 | static int vidioc_enum_input(struct file *file, void *priv, |
c820cc45 MCC |
1057 | struct v4l2_input *inp) |
1058 | { | |
e164b58a | 1059 | if (inp->index >= NUM_INPUTS) |
c820cc45 | 1060 | return -EINVAL; |
1e6dd65e | 1061 | |
c820cc45 | 1062 | inp->type = V4L2_INPUT_TYPE_CAMERA; |
784c668b | 1063 | inp->std = V4L2_STD_525_60; |
e164b58a | 1064 | sprintf(inp->name, "Camera %u", inp->index); |
1e6dd65e | 1065 | |
c820cc45 MCC |
1066 | return (0); |
1067 | } | |
1e6dd65e | 1068 | |
543323bc | 1069 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) |
c820cc45 | 1070 | { |
e164b58a MCC |
1071 | struct vivi_fh *fh = priv; |
1072 | struct vivi_dev *dev = fh->dev; | |
1073 | ||
1074 | *i = dev->input; | |
1e6dd65e | 1075 | |
c820cc45 MCC |
1076 | return (0); |
1077 | } | |
543323bc | 1078 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) |
c820cc45 | 1079 | { |
e164b58a MCC |
1080 | struct vivi_fh *fh = priv; |
1081 | struct vivi_dev *dev = fh->dev; | |
1082 | ||
1083 | if (i >= NUM_INPUTS) | |
c820cc45 | 1084 | return -EINVAL; |
1e6dd65e | 1085 | |
e164b58a MCC |
1086 | dev->input = i; |
1087 | precalculate_bars(fh); | |
1088 | ||
c820cc45 MCC |
1089 | return (0); |
1090 | } | |
1e6dd65e MCC |
1091 | |
1092 | /* --- controls ---------------------------------------------- */ | |
543323bc MCC |
1093 | static int vidioc_queryctrl(struct file *file, void *priv, |
1094 | struct v4l2_queryctrl *qc) | |
c820cc45 MCC |
1095 | { |
1096 | int i; | |
1e6dd65e | 1097 | |
c820cc45 MCC |
1098 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
1099 | if (qc->id && qc->id == vivi_qctrl[i].id) { | |
1100 | memcpy(qc, &(vivi_qctrl[i]), | |
1101 | sizeof(*qc)); | |
1102 | return (0); | |
1103 | } | |
1e6dd65e | 1104 | |
c820cc45 MCC |
1105 | return -EINVAL; |
1106 | } | |
1e6dd65e | 1107 | |
543323bc MCC |
1108 | static int vidioc_g_ctrl(struct file *file, void *priv, |
1109 | struct v4l2_control *ctrl) | |
c820cc45 MCC |
1110 | { |
1111 | int i; | |
1e6dd65e | 1112 | |
c820cc45 MCC |
1113 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
1114 | if (ctrl->id == vivi_qctrl[i].id) { | |
543323bc | 1115 | ctrl->value = qctl_regs[i]; |
c820cc45 MCC |
1116 | return (0); |
1117 | } | |
1e6dd65e | 1118 | |
c820cc45 | 1119 | return -EINVAL; |
1e6dd65e | 1120 | } |
543323bc | 1121 | static int vidioc_s_ctrl(struct file *file, void *priv, |
c820cc45 | 1122 | struct v4l2_control *ctrl) |
1e6dd65e | 1123 | { |
c820cc45 MCC |
1124 | int i; |
1125 | ||
1126 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
1127 | if (ctrl->id == vivi_qctrl[i].id) { | |
543323bc MCC |
1128 | if (ctrl->value < vivi_qctrl[i].minimum |
1129 | || ctrl->value > vivi_qctrl[i].maximum) { | |
c820cc45 MCC |
1130 | return (-ERANGE); |
1131 | } | |
543323bc | 1132 | qctl_regs[i] = ctrl->value; |
c820cc45 MCC |
1133 | return (0); |
1134 | } | |
1135 | return -EINVAL; | |
1e6dd65e MCC |
1136 | } |
1137 | ||
1138 | /* ------------------------------------------------------------------ | |
1139 | File operations for the device | |
1140 | ------------------------------------------------------------------*/ | |
1141 | ||
bec43661 | 1142 | static int vivi_open(struct file *file) |
1e6dd65e | 1143 | { |
5ab6c9af | 1144 | struct vivi_dev *dev = video_drvdata(file); |
63b79cfa | 1145 | struct vivi_fh *fh = NULL; |
1e6dd65e | 1146 | int i; |
aa9dbac4 | 1147 | int retval = 0; |
1e6dd65e | 1148 | |
aa9dbac4 | 1149 | mutex_lock(&dev->mutex); |
1e6dd65e MCC |
1150 | dev->users++; |
1151 | ||
aa9dbac4 BP |
1152 | if (dev->users > 1) { |
1153 | dev->users--; | |
5ab6c9af HV |
1154 | mutex_unlock(&dev->mutex); |
1155 | return -EBUSY; | |
aa9dbac4 BP |
1156 | } |
1157 | ||
5ab6c9af | 1158 | dprintk(dev, 1, "open /dev/video%d type=%s users=%d\n", dev->vfd->num, |
a991f44b | 1159 | v4l2_type_names[V4L2_BUF_TYPE_VIDEO_CAPTURE], dev->users); |
1e6dd65e MCC |
1160 | |
1161 | /* allocate + initialize per filehandle data */ | |
543323bc | 1162 | fh = kzalloc(sizeof(*fh), GFP_KERNEL); |
1e6dd65e MCC |
1163 | if (NULL == fh) { |
1164 | dev->users--; | |
aa9dbac4 | 1165 | retval = -ENOMEM; |
1e6dd65e | 1166 | } |
aa9dbac4 | 1167 | mutex_unlock(&dev->mutex); |
5ab6c9af HV |
1168 | |
1169 | if (retval) | |
aa9dbac4 | 1170 | return retval; |
1e6dd65e MCC |
1171 | |
1172 | file->private_data = fh; | |
1173 | fh->dev = dev; | |
c820cc45 | 1174 | |
1e6dd65e | 1175 | fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
d891f475 | 1176 | fh->fmt = &formats[0]; |
1e6dd65e MCC |
1177 | fh->width = 640; |
1178 | fh->height = 480; | |
1179 | ||
1180 | /* Put all controls at a sane state */ | |
1181 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
543323bc | 1182 | qctl_regs[i] = vivi_qctrl[i].default_value; |
1e6dd65e MCC |
1183 | |
1184 | /* Resets frame counters */ | |
543323bc MCC |
1185 | dev->h = 0; |
1186 | dev->m = 0; | |
1187 | dev->s = 0; | |
dfd8c04e | 1188 | dev->ms = 0; |
543323bc MCC |
1189 | dev->mv_count = 0; |
1190 | dev->jiffies = jiffies; | |
1191 | sprintf(dev->timestr, "%02d:%02d:%02d:%03d", | |
dfd8c04e | 1192 | dev->h, dev->m, dev->s, dev->ms); |
1e6dd65e | 1193 | |
5a037706 | 1194 | videobuf_queue_vmalloc_init(&fh->vb_vidq, &vivi_video_qops, |
55862ac9 | 1195 | NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED, |
543323bc | 1196 | sizeof(struct vivi_buffer), fh); |
1e6dd65e | 1197 | |
78718e5d BP |
1198 | vivi_start_thread(fh); |
1199 | ||
1e6dd65e MCC |
1200 | return 0; |
1201 | } | |
1202 | ||
1203 | static ssize_t | |
1204 | vivi_read(struct file *file, char __user *data, size_t count, loff_t *ppos) | |
1205 | { | |
543323bc | 1206 | struct vivi_fh *fh = file->private_data; |
1e6dd65e | 1207 | |
543323bc | 1208 | if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
acb09af4 | 1209 | return videobuf_read_stream(&fh->vb_vidq, data, count, ppos, 0, |
1e6dd65e MCC |
1210 | file->f_flags & O_NONBLOCK); |
1211 | } | |
1212 | return 0; | |
1213 | } | |
1214 | ||
1215 | static unsigned int | |
1216 | vivi_poll(struct file *file, struct poll_table_struct *wait) | |
1217 | { | |
c820cc45 | 1218 | struct vivi_fh *fh = file->private_data; |
6c2f9901 | 1219 | struct vivi_dev *dev = fh->dev; |
85c7c70b | 1220 | struct videobuf_queue *q = &fh->vb_vidq; |
1e6dd65e | 1221 | |
7e28adb2 | 1222 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e MCC |
1223 | |
1224 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) | |
1225 | return POLLERR; | |
1226 | ||
85c7c70b | 1227 | return videobuf_poll_stream(file, q, wait); |
1e6dd65e MCC |
1228 | } |
1229 | ||
bec43661 | 1230 | static int vivi_close(struct file *file) |
1e6dd65e | 1231 | { |
c820cc45 MCC |
1232 | struct vivi_fh *fh = file->private_data; |
1233 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
1234 | struct vivi_dmaqueue *vidq = &dev->vidq; |
1235 | ||
bec43661 | 1236 | int minor = video_devdata(file)->minor; |
1e6dd65e MCC |
1237 | |
1238 | vivi_stop_thread(vidq); | |
053fcb60 | 1239 | videobuf_stop(&fh->vb_vidq); |
1e6dd65e MCC |
1240 | videobuf_mmap_free(&fh->vb_vidq); |
1241 | ||
55712ff7 | 1242 | kfree(fh); |
1e6dd65e | 1243 | |
aa9dbac4 | 1244 | mutex_lock(&dev->mutex); |
1e6dd65e | 1245 | dev->users--; |
aa9dbac4 | 1246 | mutex_unlock(&dev->mutex); |
1e6dd65e | 1247 | |
6c2f9901 MCC |
1248 | dprintk(dev, 1, "close called (minor=%d, users=%d)\n", |
1249 | minor, dev->users); | |
1e6dd65e MCC |
1250 | |
1251 | return 0; | |
1252 | } | |
1253 | ||
543323bc | 1254 | static int vivi_mmap(struct file *file, struct vm_area_struct *vma) |
1e6dd65e | 1255 | { |
6c2f9901 MCC |
1256 | struct vivi_fh *fh = file->private_data; |
1257 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
1258 | int ret; |
1259 | ||
6c2f9901 | 1260 | dprintk(dev, 1, "mmap called, vma=0x%08lx\n", (unsigned long)vma); |
1e6dd65e | 1261 | |
543323bc | 1262 | ret = videobuf_mmap_mapper(&fh->vb_vidq, vma); |
1e6dd65e | 1263 | |
6c2f9901 | 1264 | dprintk(dev, 1, "vma start=0x%08lx, size=%ld, ret=%d\n", |
1e6dd65e MCC |
1265 | (unsigned long)vma->vm_start, |
1266 | (unsigned long)vma->vm_end-(unsigned long)vma->vm_start, | |
1267 | ret); | |
1268 | ||
1269 | return ret; | |
1270 | } | |
1271 | ||
bec43661 | 1272 | static const struct v4l2_file_operations vivi_fops = { |
1e6dd65e MCC |
1273 | .owner = THIS_MODULE, |
1274 | .open = vivi_open, | |
f905c442 | 1275 | .release = vivi_close, |
1e6dd65e MCC |
1276 | .read = vivi_read, |
1277 | .poll = vivi_poll, | |
c820cc45 | 1278 | .ioctl = video_ioctl2, /* V4L2 ioctl handler */ |
5a037706 | 1279 | .mmap = vivi_mmap, |
1e6dd65e MCC |
1280 | }; |
1281 | ||
a399810c | 1282 | static const struct v4l2_ioctl_ops vivi_ioctl_ops = { |
c820cc45 | 1283 | .vidioc_querycap = vidioc_querycap, |
78b526a4 HV |
1284 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, |
1285 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
1286 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
1287 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
c820cc45 MCC |
1288 | .vidioc_reqbufs = vidioc_reqbufs, |
1289 | .vidioc_querybuf = vidioc_querybuf, | |
1290 | .vidioc_qbuf = vidioc_qbuf, | |
1291 | .vidioc_dqbuf = vidioc_dqbuf, | |
1292 | .vidioc_s_std = vidioc_s_std, | |
1293 | .vidioc_enum_input = vidioc_enum_input, | |
1294 | .vidioc_g_input = vidioc_g_input, | |
1295 | .vidioc_s_input = vidioc_s_input, | |
1296 | .vidioc_queryctrl = vidioc_queryctrl, | |
1297 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
1298 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
1299 | .vidioc_streamon = vidioc_streamon, | |
1300 | .vidioc_streamoff = vidioc_streamoff, | |
0dfa9abd | 1301 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
c820cc45 MCC |
1302 | .vidiocgmbuf = vidiocgmbuf, |
1303 | #endif | |
a399810c HV |
1304 | }; |
1305 | ||
1306 | static struct video_device vivi_template = { | |
1307 | .name = "vivi", | |
a399810c HV |
1308 | .fops = &vivi_fops, |
1309 | .ioctl_ops = &vivi_ioctl_ops, | |
1310 | .minor = -1, | |
1311 | .release = video_device_release, | |
1312 | ||
784c668b | 1313 | .tvnorms = V4L2_STD_525_60, |
e75f9cee | 1314 | .current_norm = V4L2_STD_NTSC_M, |
1e6dd65e | 1315 | }; |
5ab6c9af | 1316 | |
c820cc45 | 1317 | /* ----------------------------------------------------------------- |
1e6dd65e MCC |
1318 | Initialization and module stuff |
1319 | ------------------------------------------------------------------*/ | |
1320 | ||
5ab6c9af HV |
1321 | static int vivi_release(void) |
1322 | { | |
1323 | struct vivi_dev *dev; | |
1324 | struct list_head *list; | |
980d4f17 | 1325 | |
5ab6c9af HV |
1326 | while (!list_empty(&vivi_devlist)) { |
1327 | list = vivi_devlist.next; | |
1328 | list_del(list); | |
1329 | dev = list_entry(list, struct vivi_dev, vivi_devlist); | |
1330 | ||
1331 | v4l2_info(&dev->v4l2_dev, "unregistering /dev/video%d\n", | |
1332 | dev->vfd->num); | |
1333 | video_unregister_device(dev->vfd); | |
1334 | v4l2_device_unregister(&dev->v4l2_dev); | |
1335 | kfree(dev); | |
1336 | } | |
1337 | ||
1338 | return 0; | |
1339 | } | |
1340 | ||
1341 | static int __init vivi_create_instance(int i) | |
1e6dd65e | 1342 | { |
1e6dd65e | 1343 | struct vivi_dev *dev; |
f905c442 | 1344 | struct video_device *vfd; |
5ab6c9af | 1345 | int ret; |
1e6dd65e | 1346 | |
5ab6c9af HV |
1347 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
1348 | if (!dev) | |
1349 | return -ENOMEM; | |
980d4f17 | 1350 | |
5ab6c9af HV |
1351 | snprintf(dev->v4l2_dev.name, sizeof(dev->v4l2_dev.name), |
1352 | "%s-%03d", VIVI_MODULE_NAME, i); | |
1353 | ret = v4l2_device_register(NULL, &dev->v4l2_dev); | |
1354 | if (ret) | |
1355 | goto free_dev; | |
1e6dd65e | 1356 | |
5ab6c9af HV |
1357 | /* init video dma queues */ |
1358 | INIT_LIST_HEAD(&dev->vidq.active); | |
1359 | init_waitqueue_head(&dev->vidq.wq); | |
1e6dd65e | 1360 | |
5ab6c9af HV |
1361 | /* initialize locks */ |
1362 | spin_lock_init(&dev->slock); | |
1363 | mutex_init(&dev->mutex); | |
1e6dd65e | 1364 | |
5ab6c9af HV |
1365 | ret = -ENOMEM; |
1366 | vfd = video_device_alloc(); | |
1367 | if (!vfd) | |
1368 | goto unreg_dev; | |
55712ff7 | 1369 | |
5ab6c9af | 1370 | *vfd = vivi_template; |
55712ff7 | 1371 | |
5ab6c9af HV |
1372 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr); |
1373 | if (ret < 0) | |
1374 | goto rel_vdev; | |
980d4f17 | 1375 | |
5ab6c9af | 1376 | video_set_drvdata(vfd, dev); |
980d4f17 | 1377 | |
5ab6c9af HV |
1378 | /* Now that everything is fine, let's add it to device list */ |
1379 | list_add_tail(&dev->vivi_devlist, &vivi_devlist); | |
980d4f17 | 1380 | |
5ab6c9af HV |
1381 | snprintf(vfd->name, sizeof(vfd->name), "%s (%i)", |
1382 | vivi_template.name, vfd->num); | |
55712ff7 | 1383 | |
5ab6c9af HV |
1384 | if (video_nr >= 0) |
1385 | video_nr++; | |
f905c442 | 1386 | |
5ab6c9af HV |
1387 | dev->vfd = vfd; |
1388 | v4l2_info(&dev->v4l2_dev, "V4L2 device registered as /dev/video%d\n", | |
1389 | vfd->num); | |
1390 | return 0; | |
1391 | ||
1392 | rel_vdev: | |
1393 | video_device_release(vfd); | |
1394 | unreg_dev: | |
1395 | v4l2_device_unregister(&dev->v4l2_dev); | |
1396 | free_dev: | |
1397 | kfree(dev); | |
1398 | return ret; | |
1399 | } | |
f905c442 | 1400 | |
5ab6c9af HV |
1401 | /* This routine allocates from 1 to n_devs virtual drivers. |
1402 | ||
1403 | The real maximum number of virtual drivers will depend on how many drivers | |
1404 | will succeed. This is limited to the maximum number of devices that | |
1405 | videodev supports, which is equal to VIDEO_NUM_DEVICES. | |
1406 | */ | |
1407 | static int __init vivi_init(void) | |
1408 | { | |
1409 | int ret, i; | |
1410 | ||
1411 | if (n_devs <= 0) | |
1412 | n_devs = 1; | |
1413 | ||
1414 | for (i = 0; i < n_devs; i++) { | |
1415 | ret = vivi_create_instance(i); | |
1416 | if (ret) { | |
1417 | /* If some instantiations succeeded, keep driver */ | |
1418 | if (i) | |
1419 | ret = 0; | |
1420 | break; | |
1421 | } | |
55712ff7 | 1422 | } |
f905c442 | 1423 | |
55712ff7 | 1424 | if (ret < 0) { |
55712ff7 | 1425 | printk(KERN_INFO "Error %d while loading vivi driver\n", ret); |
5ab6c9af HV |
1426 | return ret; |
1427 | } | |
1428 | ||
1429 | printk(KERN_INFO "Video Technology Magazine Virtual Video " | |
745271ae CK |
1430 | "Capture Board ver %u.%u.%u successfully loaded.\n", |
1431 | (VIVI_VERSION >> 16) & 0xFF, (VIVI_VERSION >> 8) & 0xFF, | |
1432 | VIVI_VERSION & 0xFF); | |
980d4f17 | 1433 | |
5ab6c9af HV |
1434 | /* n_devs will reflect the actual number of allocated devices */ |
1435 | n_devs = i; | |
980d4f17 | 1436 | |
1e6dd65e MCC |
1437 | return ret; |
1438 | } | |
1439 | ||
1440 | static void __exit vivi_exit(void) | |
1441 | { | |
55712ff7 | 1442 | vivi_release(); |
1e6dd65e MCC |
1443 | } |
1444 | ||
1445 | module_init(vivi_init); | |
1446 | module_exit(vivi_exit); |