]>
Commit | Line | Data |
---|---|---|
1e6dd65e MCC |
1 | /* |
2 | * Virtual Video driver - This code emulates a real video device with v4l2 api | |
3 | * | |
4 | * Copyright (c) 2006 by: | |
5 | * Mauro Carvalho Chehab <mchehab--a.t--infradead.org> | |
6 | * Ted Walther <ted--a.t--enumera.com> | |
7 | * John Sokol <sokol--a.t--videotechnology.com> | |
8 | * http://v4l.videotechnology.com/ | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the BSD Licence, GNU General Public License | |
12 | * as published by the Free Software Foundation; either version 2 of the | |
13 | * License, or (at your option) any later version | |
14 | */ | |
15 | #include <linux/module.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/errno.h> | |
18 | #include <linux/fs.h> | |
19 | #include <linux/kernel.h> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/mm.h> | |
22 | #include <linux/ioport.h> | |
23 | #include <linux/init.h> | |
24 | #include <linux/sched.h> | |
25 | #include <linux/pci.h> | |
26 | #include <linux/random.h> | |
27 | #include <linux/version.h> | |
51b54029 | 28 | #include <linux/mutex.h> |
1e6dd65e | 29 | #include <linux/videodev2.h> |
1095136d | 30 | #include <linux/dma-mapping.h> |
cd41e28e MCC |
31 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
32 | /* Include V4L1 specific functions. Should be removed soon */ | |
33 | #include <linux/videodev.h> | |
34 | #endif | |
f13df919 | 35 | #include <linux/interrupt.h> |
5a037706 | 36 | #include <media/videobuf-vmalloc.h> |
1e6dd65e | 37 | #include <media/v4l2-common.h> |
35ea11ff | 38 | #include <media/v4l2-ioctl.h> |
1e6dd65e MCC |
39 | #include <linux/kthread.h> |
40 | #include <linux/highmem.h> | |
7dfb7103 | 41 | #include <linux/freezer.h> |
1e6dd65e | 42 | |
584ce48d | 43 | #define VIVI_MODULE_NAME "vivi" |
745271ae | 44 | |
1e6dd65e MCC |
45 | /* Wake up at about 30 fps */ |
46 | #define WAKE_NUMERATOR 30 | |
47 | #define WAKE_DENOMINATOR 1001 | |
48 | #define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */ | |
49 | ||
1e6dd65e MCC |
50 | #include "font.h" |
51 | ||
1e6dd65e | 52 | #define VIVI_MAJOR_VERSION 0 |
745271ae | 53 | #define VIVI_MINOR_VERSION 5 |
1e6dd65e | 54 | #define VIVI_RELEASE 0 |
543323bc MCC |
55 | #define VIVI_VERSION \ |
56 | KERNEL_VERSION(VIVI_MAJOR_VERSION, VIVI_MINOR_VERSION, VIVI_RELEASE) | |
1e6dd65e | 57 | |
c820cc45 MCC |
58 | /* Declare static vars that will be used as parameters */ |
59 | static unsigned int vid_limit = 16; /* Video memory limit, in Mb */ | |
c820cc45 | 60 | static int video_nr = -1; /* /dev/videoN, -1 for autodetect */ |
55712ff7 | 61 | static int n_devs = 1; /* Number of virtual devices */ |
1e6dd65e MCC |
62 | |
63 | /* supported controls */ | |
64 | static struct v4l2_queryctrl vivi_qctrl[] = { | |
65 | { | |
66 | .id = V4L2_CID_AUDIO_VOLUME, | |
67 | .name = "Volume", | |
68 | .minimum = 0, | |
69 | .maximum = 65535, | |
70 | .step = 65535/100, | |
71 | .default_value = 65535, | |
72 | .flags = 0, | |
73 | .type = V4L2_CTRL_TYPE_INTEGER, | |
543323bc | 74 | }, { |
1e6dd65e MCC |
75 | .id = V4L2_CID_BRIGHTNESS, |
76 | .type = V4L2_CTRL_TYPE_INTEGER, | |
77 | .name = "Brightness", | |
78 | .minimum = 0, | |
79 | .maximum = 255, | |
80 | .step = 1, | |
81 | .default_value = 127, | |
82 | .flags = 0, | |
83 | }, { | |
84 | .id = V4L2_CID_CONTRAST, | |
85 | .type = V4L2_CTRL_TYPE_INTEGER, | |
86 | .name = "Contrast", | |
87 | .minimum = 0, | |
88 | .maximum = 255, | |
89 | .step = 0x1, | |
90 | .default_value = 0x10, | |
91 | .flags = 0, | |
92 | }, { | |
93 | .id = V4L2_CID_SATURATION, | |
94 | .type = V4L2_CTRL_TYPE_INTEGER, | |
95 | .name = "Saturation", | |
96 | .minimum = 0, | |
97 | .maximum = 255, | |
98 | .step = 0x1, | |
99 | .default_value = 127, | |
100 | .flags = 0, | |
101 | }, { | |
102 | .id = V4L2_CID_HUE, | |
103 | .type = V4L2_CTRL_TYPE_INTEGER, | |
104 | .name = "Hue", | |
105 | .minimum = -128, | |
106 | .maximum = 127, | |
107 | .step = 0x1, | |
108 | .default_value = 0, | |
109 | .flags = 0, | |
110 | } | |
111 | }; | |
112 | ||
113 | static int qctl_regs[ARRAY_SIZE(vivi_qctrl)]; | |
114 | ||
6c2f9901 | 115 | #define dprintk(dev, level, fmt, arg...) \ |
c820cc45 | 116 | do { \ |
6c2f9901 | 117 | if (dev->vfd->debug >= (level)) \ |
c820cc45 | 118 | printk(KERN_DEBUG "vivi: " fmt , ## arg); \ |
1e6dd65e MCC |
119 | } while (0) |
120 | ||
121 | /* ------------------------------------------------------------------ | |
122 | Basic structures | |
123 | ------------------------------------------------------------------*/ | |
124 | ||
125 | struct vivi_fmt { | |
126 | char *name; | |
127 | u32 fourcc; /* v4l2 format id */ | |
128 | int depth; | |
129 | }; | |
130 | ||
d891f475 MD |
131 | static struct vivi_fmt formats[] = { |
132 | { | |
133 | .name = "4:2:2, packed, YUYV", | |
134 | .fourcc = V4L2_PIX_FMT_YUYV, | |
135 | .depth = 16, | |
136 | }, | |
fca36bab MD |
137 | { |
138 | .name = "4:2:2, packed, UYVY", | |
139 | .fourcc = V4L2_PIX_FMT_UYVY, | |
140 | .depth = 16, | |
141 | }, | |
aeadb5d4 MD |
142 | { |
143 | .name = "RGB565 (LE)", | |
144 | .fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */ | |
145 | .depth = 16, | |
146 | }, | |
147 | { | |
148 | .name = "RGB565 (BE)", | |
149 | .fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */ | |
150 | .depth = 16, | |
151 | }, | |
def52393 MD |
152 | { |
153 | .name = "RGB555 (LE)", | |
154 | .fourcc = V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */ | |
155 | .depth = 16, | |
156 | }, | |
157 | { | |
158 | .name = "RGB555 (BE)", | |
159 | .fourcc = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */ | |
160 | .depth = 16, | |
161 | }, | |
1e6dd65e MCC |
162 | }; |
163 | ||
d891f475 MD |
164 | static struct vivi_fmt *get_format(struct v4l2_format *f) |
165 | { | |
166 | struct vivi_fmt *fmt; | |
167 | unsigned int k; | |
168 | ||
169 | for (k = 0; k < ARRAY_SIZE(formats); k++) { | |
170 | fmt = &formats[k]; | |
171 | if (fmt->fourcc == f->fmt.pix.pixelformat) | |
172 | break; | |
173 | } | |
174 | ||
175 | if (k == ARRAY_SIZE(formats)) | |
176 | return NULL; | |
177 | ||
178 | return &formats[k]; | |
179 | } | |
180 | ||
1e6dd65e MCC |
181 | struct sg_to_addr { |
182 | int pos; | |
183 | struct scatterlist *sg; | |
184 | }; | |
185 | ||
186 | /* buffer for one video frame */ | |
187 | struct vivi_buffer { | |
188 | /* common v4l buffer stuff -- must be first */ | |
189 | struct videobuf_buffer vb; | |
190 | ||
191 | struct vivi_fmt *fmt; | |
1e6dd65e MCC |
192 | }; |
193 | ||
194 | struct vivi_dmaqueue { | |
195 | struct list_head active; | |
1e6dd65e MCC |
196 | |
197 | /* thread for generating video stream*/ | |
198 | struct task_struct *kthread; | |
199 | wait_queue_head_t wq; | |
200 | /* Counters to control fps rate */ | |
201 | int frame; | |
202 | int ini_jiffies; | |
203 | }; | |
204 | ||
205 | static LIST_HEAD(vivi_devlist); | |
206 | ||
207 | struct vivi_dev { | |
208 | struct list_head vivi_devlist; | |
209 | ||
55862ac9 | 210 | spinlock_t slock; |
aa9dbac4 | 211 | struct mutex mutex; |
1e6dd65e MCC |
212 | |
213 | int users; | |
214 | ||
215 | /* various device info */ | |
f905c442 | 216 | struct video_device *vfd; |
1e6dd65e MCC |
217 | |
218 | struct vivi_dmaqueue vidq; | |
219 | ||
220 | /* Several counters */ | |
dfd8c04e MCC |
221 | int h, m, s, ms; |
222 | unsigned long jiffies; | |
1e6dd65e | 223 | char timestr[13]; |
025341d4 MCC |
224 | |
225 | int mv_count; /* Controls bars movement */ | |
1e6dd65e MCC |
226 | }; |
227 | ||
228 | struct vivi_fh { | |
229 | struct vivi_dev *dev; | |
230 | ||
231 | /* video capture */ | |
232 | struct vivi_fmt *fmt; | |
543323bc | 233 | unsigned int width, height; |
1e6dd65e MCC |
234 | struct videobuf_queue vb_vidq; |
235 | ||
236 | enum v4l2_buf_type type; | |
74d7c5af | 237 | unsigned char bars[8][3]; |
1e6dd65e MCC |
238 | }; |
239 | ||
240 | /* ------------------------------------------------------------------ | |
241 | DMA and thread functions | |
242 | ------------------------------------------------------------------*/ | |
243 | ||
244 | /* Bars and Colors should match positions */ | |
245 | ||
246 | enum colors { | |
247 | WHITE, | |
248 | AMBAR, | |
249 | CYAN, | |
250 | GREEN, | |
251 | MAGENTA, | |
252 | RED, | |
543323bc MCC |
253 | BLUE, |
254 | BLACK, | |
1e6dd65e MCC |
255 | }; |
256 | ||
257 | static u8 bars[8][3] = { | |
258 | /* R G B */ | |
543323bc MCC |
259 | {204, 204, 204}, /* white */ |
260 | {208, 208, 0}, /* ambar */ | |
261 | { 0, 206, 206}, /* cyan */ | |
262 | { 0, 239, 0}, /* green */ | |
263 | {239, 0, 239}, /* magenta */ | |
264 | {205, 0, 0}, /* red */ | |
265 | { 0, 0, 255}, /* blue */ | |
266 | { 0, 0, 0}, /* black */ | |
1e6dd65e MCC |
267 | }; |
268 | ||
543323bc MCC |
269 | #define TO_Y(r, g, b) \ |
270 | (((16829 * r + 33039 * g + 6416 * b + 32768) >> 16) + 16) | |
1e6dd65e | 271 | /* RGB to V(Cr) Color transform */ |
543323bc MCC |
272 | #define TO_V(r, g, b) \ |
273 | (((28784 * r - 24103 * g - 4681 * b + 32768) >> 16) + 128) | |
1e6dd65e | 274 | /* RGB to U(Cb) Color transform */ |
543323bc MCC |
275 | #define TO_U(r, g, b) \ |
276 | (((-9714 * r - 19070 * g + 28784 * b + 32768) >> 16) + 128) | |
1e6dd65e MCC |
277 | |
278 | #define TSTAMP_MIN_Y 24 | |
279 | #define TSTAMP_MAX_Y TSTAMP_MIN_Y+15 | |
280 | #define TSTAMP_MIN_X 64 | |
281 | ||
74d7c5af MD |
282 | static void gen_twopix(struct vivi_fh *fh, unsigned char *buf, int colorpos) |
283 | { | |
284 | unsigned char r_y, g_u, b_v; | |
285 | unsigned char *p; | |
286 | int color; | |
287 | ||
288 | r_y = fh->bars[colorpos][0]; /* R or precalculated Y */ | |
289 | g_u = fh->bars[colorpos][1]; /* G or precalculated U */ | |
290 | b_v = fh->bars[colorpos][2]; /* B or precalculated V */ | |
291 | ||
292 | for (color = 0; color < 4; color++) { | |
293 | p = buf + color; | |
294 | ||
d891f475 MD |
295 | switch (fh->fmt->fourcc) { |
296 | case V4L2_PIX_FMT_YUYV: | |
297 | switch (color) { | |
298 | case 0: | |
299 | case 2: | |
300 | *p = r_y; | |
301 | break; | |
302 | case 1: | |
303 | *p = g_u; | |
304 | break; | |
305 | case 3: | |
306 | *p = b_v; | |
307 | break; | |
308 | } | |
74d7c5af | 309 | break; |
fca36bab MD |
310 | case V4L2_PIX_FMT_UYVY: |
311 | switch (color) { | |
312 | case 1: | |
313 | case 3: | |
314 | *p = r_y; | |
315 | break; | |
316 | case 0: | |
317 | *p = g_u; | |
318 | break; | |
319 | case 2: | |
320 | *p = b_v; | |
321 | break; | |
322 | } | |
323 | break; | |
aeadb5d4 MD |
324 | case V4L2_PIX_FMT_RGB565: |
325 | switch (color) { | |
326 | case 0: | |
327 | case 2: | |
328 | *p = (g_u << 5) | b_v; | |
329 | break; | |
330 | case 1: | |
331 | case 3: | |
332 | *p = (r_y << 3) | (g_u >> 3); | |
333 | break; | |
334 | } | |
335 | break; | |
336 | case V4L2_PIX_FMT_RGB565X: | |
337 | switch (color) { | |
338 | case 0: | |
339 | case 2: | |
340 | *p = (r_y << 3) | (g_u >> 3); | |
341 | break; | |
342 | case 1: | |
343 | case 3: | |
344 | *p = (g_u << 5) | b_v; | |
345 | break; | |
346 | } | |
347 | break; | |
def52393 MD |
348 | case V4L2_PIX_FMT_RGB555: |
349 | switch (color) { | |
350 | case 0: | |
351 | case 2: | |
352 | *p = (g_u << 5) | b_v; | |
353 | break; | |
354 | case 1: | |
355 | case 3: | |
356 | *p = (r_y << 2) | (g_u >> 3); | |
357 | break; | |
358 | } | |
359 | break; | |
360 | case V4L2_PIX_FMT_RGB555X: | |
361 | switch (color) { | |
362 | case 0: | |
363 | case 2: | |
364 | *p = (r_y << 2) | (g_u >> 3); | |
365 | break; | |
366 | case 1: | |
367 | case 3: | |
368 | *p = (g_u << 5) | b_v; | |
369 | break; | |
370 | } | |
371 | break; | |
74d7c5af MD |
372 | } |
373 | } | |
374 | } | |
375 | ||
376 | static void gen_line(struct vivi_fh *fh, char *basep, int inipos, int wmax, | |
543323bc | 377 | int hmax, int line, int count, char *timestr) |
1e6dd65e | 378 | { |
74d7c5af | 379 | int w, i, j; |
543323bc | 380 | int pos = inipos; |
74d7c5af MD |
381 | char *s; |
382 | u8 chr; | |
1e6dd65e MCC |
383 | |
384 | /* We will just duplicate the second pixel at the packet */ | |
543323bc | 385 | wmax /= 2; |
1e6dd65e MCC |
386 | |
387 | /* Generate a standard color bar pattern */ | |
543323bc MCC |
388 | for (w = 0; w < wmax; w++) { |
389 | int colorpos = ((w + count) * 8/(wmax + 1)) % 8; | |
74d7c5af MD |
390 | |
391 | gen_twopix(fh, basep + pos, colorpos); | |
392 | pos += 4; /* only 16 bpp supported for now */ | |
1e6dd65e MCC |
393 | } |
394 | ||
395 | /* Checks if it is possible to show timestamp */ | |
543323bc | 396 | if (TSTAMP_MAX_Y >= hmax) |
1e6dd65e | 397 | goto end; |
543323bc | 398 | if (TSTAMP_MIN_X + strlen(timestr) >= wmax) |
1e6dd65e MCC |
399 | goto end; |
400 | ||
401 | /* Print stream time */ | |
543323bc MCC |
402 | if (line >= TSTAMP_MIN_Y && line <= TSTAMP_MAX_Y) { |
403 | j = TSTAMP_MIN_X; | |
404 | for (s = timestr; *s; s++) { | |
405 | chr = rom8x16_bits[(*s-0x30)*16+line-TSTAMP_MIN_Y]; | |
406 | for (i = 0; i < 7; i++) { | |
543323bc | 407 | pos = inipos + j * 2; |
74d7c5af MD |
408 | /* Draw white font on black background */ |
409 | if (chr & 1 << (7 - i)) | |
410 | gen_twopix(fh, basep + pos, WHITE); | |
411 | else | |
412 | gen_twopix(fh, basep + pos, BLACK); | |
1e6dd65e MCC |
413 | j++; |
414 | } | |
415 | } | |
416 | } | |
417 | ||
1e6dd65e | 418 | end: |
b50e7fe9 | 419 | return; |
1e6dd65e | 420 | } |
78718e5d | 421 | |
74d7c5af | 422 | static void vivi_fillbuff(struct vivi_fh *fh, struct vivi_buffer *buf) |
1e6dd65e | 423 | { |
74d7c5af | 424 | struct vivi_dev *dev = fh->dev; |
543323bc | 425 | int h , pos = 0; |
1e6dd65e MCC |
426 | int hmax = buf->vb.height; |
427 | int wmax = buf->vb.width; | |
1e6dd65e | 428 | struct timeval ts; |
5c554e6b | 429 | char *tmpbuf; |
543323bc | 430 | void *vbuf = videobuf_to_vmalloc(&buf->vb); |
b50e7fe9 | 431 | |
5c554e6b | 432 | if (!vbuf) |
5a037706 | 433 | return; |
1e6dd65e | 434 | |
5c554e6b MS |
435 | tmpbuf = kmalloc(wmax * 2, GFP_ATOMIC); |
436 | if (!tmpbuf) | |
78718e5d BP |
437 | return; |
438 | ||
543323bc | 439 | for (h = 0; h < hmax; h++) { |
74d7c5af | 440 | gen_line(fh, tmpbuf, 0, wmax, hmax, h, dev->mv_count, |
3bef5e4a | 441 | dev->timestr); |
78718e5d | 442 | memcpy(vbuf + pos, tmpbuf, wmax * 2); |
1e6dd65e MCC |
443 | pos += wmax*2; |
444 | } | |
445 | ||
025341d4 | 446 | dev->mv_count++; |
3bef5e4a | 447 | |
5a037706 MCC |
448 | kfree(tmpbuf); |
449 | ||
1e6dd65e MCC |
450 | /* Updates stream time */ |
451 | ||
dfd8c04e | 452 | dev->ms += jiffies_to_msecs(jiffies-dev->jiffies); |
543323bc | 453 | dev->jiffies = jiffies; |
dfd8c04e MCC |
454 | if (dev->ms >= 1000) { |
455 | dev->ms -= 1000; | |
1e6dd65e | 456 | dev->s++; |
543323bc MCC |
457 | if (dev->s >= 60) { |
458 | dev->s -= 60; | |
1e6dd65e | 459 | dev->m++; |
543323bc MCC |
460 | if (dev->m > 60) { |
461 | dev->m -= 60; | |
1e6dd65e | 462 | dev->h++; |
543323bc MCC |
463 | if (dev->h > 24) |
464 | dev->h -= 24; | |
1e6dd65e MCC |
465 | } |
466 | } | |
467 | } | |
543323bc | 468 | sprintf(dev->timestr, "%02d:%02d:%02d:%03d", |
dfd8c04e | 469 | dev->h, dev->m, dev->s, dev->ms); |
1e6dd65e | 470 | |
6c2f9901 MCC |
471 | dprintk(dev, 2, "vivifill at %s: Buffer 0x%08lx size= %d\n", |
472 | dev->timestr, (unsigned long)tmpbuf, pos); | |
1e6dd65e MCC |
473 | |
474 | /* Advice that buffer was filled */ | |
1e6dd65e MCC |
475 | buf->vb.field_count++; |
476 | do_gettimeofday(&ts); | |
477 | buf->vb.ts = ts; | |
78718e5d | 478 | buf->vb.state = VIDEOBUF_DONE; |
1e6dd65e MCC |
479 | } |
480 | ||
78718e5d | 481 | static void vivi_thread_tick(struct vivi_fh *fh) |
1e6dd65e | 482 | { |
78718e5d BP |
483 | struct vivi_buffer *buf; |
484 | struct vivi_dev *dev = fh->dev; | |
485 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
1e6dd65e | 486 | |
78718e5d | 487 | unsigned long flags = 0; |
1e6dd65e | 488 | |
78718e5d | 489 | dprintk(dev, 1, "Thread tick\n"); |
1e6dd65e | 490 | |
78718e5d BP |
491 | spin_lock_irqsave(&dev->slock, flags); |
492 | if (list_empty(&dma_q->active)) { | |
493 | dprintk(dev, 1, "No active queue to serve\n"); | |
494 | goto unlock; | |
495 | } | |
1e6dd65e | 496 | |
78718e5d BP |
497 | buf = list_entry(dma_q->active.next, |
498 | struct vivi_buffer, vb.queue); | |
1e6dd65e | 499 | |
78718e5d BP |
500 | /* Nobody is waiting on this buffer, return */ |
501 | if (!waitqueue_active(&buf->vb.done)) | |
502 | goto unlock; | |
1e6dd65e | 503 | |
78718e5d | 504 | list_del(&buf->vb.queue); |
0b600512 | 505 | |
78718e5d BP |
506 | do_gettimeofday(&buf->vb.ts); |
507 | ||
508 | /* Fill buffer */ | |
74d7c5af | 509 | vivi_fillbuff(fh, buf); |
78718e5d BP |
510 | dprintk(dev, 1, "filled buffer %p\n", buf); |
511 | ||
512 | wake_up(&buf->vb.done); | |
513 | dprintk(dev, 2, "[%p/%d] wakeup\n", buf, buf->vb. i); | |
514 | unlock: | |
515 | spin_unlock_irqrestore(&dev->slock, flags); | |
516 | return; | |
1e6dd65e MCC |
517 | } |
518 | ||
6594ad82 MCC |
519 | #define frames_to_ms(frames) \ |
520 | ((frames * WAKE_NUMERATOR * 1000) / WAKE_DENOMINATOR) | |
521 | ||
78718e5d | 522 | static void vivi_sleep(struct vivi_fh *fh) |
1e6dd65e | 523 | { |
78718e5d BP |
524 | struct vivi_dev *dev = fh->dev; |
525 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
526 | int timeout; | |
1e6dd65e MCC |
527 | DECLARE_WAITQUEUE(wait, current); |
528 | ||
7e28adb2 | 529 | dprintk(dev, 1, "%s dma_q=0x%08lx\n", __func__, |
6c2f9901 | 530 | (unsigned long)dma_q); |
1e6dd65e MCC |
531 | |
532 | add_wait_queue(&dma_q->wq, &wait); | |
6594ad82 MCC |
533 | if (kthread_should_stop()) |
534 | goto stop_task; | |
535 | ||
6594ad82 | 536 | /* Calculate time to wake up */ |
78718e5d | 537 | timeout = msecs_to_jiffies(frames_to_ms(1)); |
6594ad82 | 538 | |
78718e5d | 539 | vivi_thread_tick(fh); |
6594ad82 MCC |
540 | |
541 | schedule_timeout_interruptible(timeout); | |
1e6dd65e | 542 | |
6594ad82 | 543 | stop_task: |
1e6dd65e MCC |
544 | remove_wait_queue(&dma_q->wq, &wait); |
545 | try_to_freeze(); | |
546 | } | |
547 | ||
972c3517 | 548 | static int vivi_thread(void *data) |
1e6dd65e | 549 | { |
78718e5d BP |
550 | struct vivi_fh *fh = data; |
551 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e | 552 | |
6c2f9901 | 553 | dprintk(dev, 1, "thread started\n"); |
1e6dd65e | 554 | |
83144186 | 555 | set_freezable(); |
0b600512 | 556 | |
1e6dd65e | 557 | for (;;) { |
78718e5d | 558 | vivi_sleep(fh); |
1e6dd65e MCC |
559 | |
560 | if (kthread_should_stop()) | |
561 | break; | |
562 | } | |
6c2f9901 | 563 | dprintk(dev, 1, "thread: exit\n"); |
1e6dd65e MCC |
564 | return 0; |
565 | } | |
566 | ||
78718e5d | 567 | static int vivi_start_thread(struct vivi_fh *fh) |
1e6dd65e | 568 | { |
78718e5d BP |
569 | struct vivi_dev *dev = fh->dev; |
570 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
6c2f9901 | 571 | |
543323bc MCC |
572 | dma_q->frame = 0; |
573 | dma_q->ini_jiffies = jiffies; | |
1e6dd65e | 574 | |
7e28adb2 | 575 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e | 576 | |
78718e5d | 577 | dma_q->kthread = kthread_run(vivi_thread, fh, "vivi"); |
1e6dd65e | 578 | |
054afee4 | 579 | if (IS_ERR(dma_q->kthread)) { |
1e6dd65e | 580 | printk(KERN_ERR "vivi: kernel_thread() failed\n"); |
054afee4 | 581 | return PTR_ERR(dma_q->kthread); |
1e6dd65e | 582 | } |
0b600512 MCC |
583 | /* Wakes thread */ |
584 | wake_up_interruptible(&dma_q->wq); | |
585 | ||
7e28adb2 | 586 | dprintk(dev, 1, "returning from %s\n", __func__); |
1e6dd65e MCC |
587 | return 0; |
588 | } | |
589 | ||
972c3517 | 590 | static void vivi_stop_thread(struct vivi_dmaqueue *dma_q) |
1e6dd65e | 591 | { |
6c2f9901 MCC |
592 | struct vivi_dev *dev = container_of(dma_q, struct vivi_dev, vidq); |
593 | ||
7e28adb2 | 594 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e MCC |
595 | /* shutdown control thread */ |
596 | if (dma_q->kthread) { | |
597 | kthread_stop(dma_q->kthread); | |
543323bc | 598 | dma_q->kthread = NULL; |
1e6dd65e MCC |
599 | } |
600 | } | |
601 | ||
1e6dd65e MCC |
602 | /* ------------------------------------------------------------------ |
603 | Videobuf operations | |
604 | ------------------------------------------------------------------*/ | |
605 | static int | |
606 | buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) | |
607 | { | |
6c2f9901 MCC |
608 | struct vivi_fh *fh = vq->priv_data; |
609 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
610 | |
611 | *size = fh->width*fh->height*2; | |
612 | ||
613 | if (0 == *count) | |
614 | *count = 32; | |
6bb2790f | 615 | |
1e6dd65e MCC |
616 | while (*size * *count > vid_limit * 1024 * 1024) |
617 | (*count)--; | |
6bb2790f | 618 | |
7e28adb2 | 619 | dprintk(dev, 1, "%s, count=%d, size=%d\n", __func__, |
6c2f9901 | 620 | *count, *size); |
6bb2790f | 621 | |
1e6dd65e MCC |
622 | return 0; |
623 | } | |
624 | ||
972c3517 | 625 | static void free_buffer(struct videobuf_queue *vq, struct vivi_buffer *buf) |
1e6dd65e | 626 | { |
6c2f9901 MCC |
627 | struct vivi_fh *fh = vq->priv_data; |
628 | struct vivi_dev *dev = fh->dev; | |
629 | ||
7e28adb2 | 630 | dprintk(dev, 1, "%s, state: %i\n", __func__, buf->vb.state); |
1e6dd65e MCC |
631 | |
632 | if (in_interrupt()) | |
633 | BUG(); | |
634 | ||
5a037706 | 635 | videobuf_vmalloc_free(&buf->vb); |
fbde31d5 | 636 | dprintk(dev, 1, "free_buffer: freed\n"); |
0fc0686e | 637 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
1e6dd65e MCC |
638 | } |
639 | ||
640 | #define norm_maxw() 1024 | |
641 | #define norm_maxh() 768 | |
642 | static int | |
643 | buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, | |
644 | enum v4l2_field field) | |
645 | { | |
646 | struct vivi_fh *fh = vq->priv_data; | |
6c2f9901 | 647 | struct vivi_dev *dev = fh->dev; |
543323bc | 648 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
78718e5d | 649 | int rc; |
1e6dd65e | 650 | |
7e28adb2 | 651 | dprintk(dev, 1, "%s, field=%d\n", __func__, field); |
1e6dd65e MCC |
652 | |
653 | BUG_ON(NULL == fh->fmt); | |
78718e5d | 654 | |
1e6dd65e MCC |
655 | if (fh->width < 48 || fh->width > norm_maxw() || |
656 | fh->height < 32 || fh->height > norm_maxh()) | |
657 | return -EINVAL; | |
78718e5d | 658 | |
1e6dd65e MCC |
659 | buf->vb.size = fh->width*fh->height*2; |
660 | if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) | |
661 | return -EINVAL; | |
662 | ||
78718e5d BP |
663 | /* These properties only change when queue is idle, see s_fmt */ |
664 | buf->fmt = fh->fmt; | |
665 | buf->vb.width = fh->width; | |
666 | buf->vb.height = fh->height; | |
667 | buf->vb.field = field; | |
1e6dd65e | 668 | |
0fc0686e | 669 | if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { |
543323bc MCC |
670 | rc = videobuf_iolock(vq, &buf->vb, NULL); |
671 | if (rc < 0) | |
1e6dd65e MCC |
672 | goto fail; |
673 | } | |
674 | ||
0fc0686e | 675 | buf->vb.state = VIDEOBUF_PREPARED; |
1e6dd65e | 676 | |
1e6dd65e MCC |
677 | return 0; |
678 | ||
679 | fail: | |
543323bc | 680 | free_buffer(vq, buf); |
1e6dd65e MCC |
681 | return rc; |
682 | } | |
683 | ||
684 | static void | |
685 | buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) | |
686 | { | |
543323bc MCC |
687 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
688 | struct vivi_fh *fh = vq->priv_data; | |
689 | struct vivi_dev *dev = fh->dev; | |
78718e5d BP |
690 | struct vivi_dmaqueue *vidq = &dev->vidq; |
691 | ||
7e28adb2 | 692 | dprintk(dev, 1, "%s\n", __func__); |
78718e5d BP |
693 | |
694 | buf->vb.state = VIDEOBUF_QUEUED; | |
695 | list_add_tail(&buf->vb.queue, &vidq->active); | |
1e6dd65e MCC |
696 | } |
697 | ||
543323bc MCC |
698 | static void buffer_release(struct videobuf_queue *vq, |
699 | struct videobuf_buffer *vb) | |
1e6dd65e | 700 | { |
543323bc | 701 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
1e6dd65e | 702 | struct vivi_fh *fh = vq->priv_data; |
543323bc | 703 | struct vivi_dev *dev = (struct vivi_dev *)fh->dev; |
1e6dd65e | 704 | |
7e28adb2 | 705 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e | 706 | |
543323bc | 707 | free_buffer(vq, buf); |
1e6dd65e MCC |
708 | } |
709 | ||
1e6dd65e MCC |
710 | static struct videobuf_queue_ops vivi_video_qops = { |
711 | .buf_setup = buffer_setup, | |
712 | .buf_prepare = buffer_prepare, | |
713 | .buf_queue = buffer_queue, | |
714 | .buf_release = buffer_release, | |
1e6dd65e MCC |
715 | }; |
716 | ||
c820cc45 MCC |
717 | /* ------------------------------------------------------------------ |
718 | IOCTL vidioc handling | |
719 | ------------------------------------------------------------------*/ | |
543323bc | 720 | static int vidioc_querycap(struct file *file, void *priv, |
c820cc45 MCC |
721 | struct v4l2_capability *cap) |
722 | { | |
723 | strcpy(cap->driver, "vivi"); | |
724 | strcpy(cap->card, "vivi"); | |
725 | cap->version = VIVI_VERSION; | |
726 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | | |
727 | V4L2_CAP_STREAMING | | |
728 | V4L2_CAP_READWRITE; | |
729 | return 0; | |
730 | } | |
731 | ||
78b526a4 | 732 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 MCC |
733 | struct v4l2_fmtdesc *f) |
734 | { | |
d891f475 MD |
735 | struct vivi_fmt *fmt; |
736 | ||
737 | if (f->index >= ARRAY_SIZE(formats)) | |
c820cc45 MCC |
738 | return -EINVAL; |
739 | ||
d891f475 MD |
740 | fmt = &formats[f->index]; |
741 | ||
742 | strlcpy(f->description, fmt->name, sizeof(f->description)); | |
743 | f->pixelformat = fmt->fourcc; | |
c820cc45 MCC |
744 | return 0; |
745 | } | |
746 | ||
78b526a4 | 747 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 MCC |
748 | struct v4l2_format *f) |
749 | { | |
543323bc | 750 | struct vivi_fh *fh = priv; |
c820cc45 MCC |
751 | |
752 | f->fmt.pix.width = fh->width; | |
753 | f->fmt.pix.height = fh->height; | |
754 | f->fmt.pix.field = fh->vb_vidq.field; | |
755 | f->fmt.pix.pixelformat = fh->fmt->fourcc; | |
756 | f->fmt.pix.bytesperline = | |
757 | (f->fmt.pix.width * fh->fmt->depth) >> 3; | |
758 | f->fmt.pix.sizeimage = | |
759 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
760 | ||
761 | return (0); | |
762 | } | |
763 | ||
78b526a4 | 764 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, |
1e6dd65e MCC |
765 | struct v4l2_format *f) |
766 | { | |
6c2f9901 MCC |
767 | struct vivi_fh *fh = priv; |
768 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
769 | struct vivi_fmt *fmt; |
770 | enum v4l2_field field; | |
771 | unsigned int maxw, maxh; | |
772 | ||
d891f475 MD |
773 | fmt = get_format(f); |
774 | if (!fmt) { | |
775 | dprintk(dev, 1, "Fourcc format (0x%08x) invalid.\n", | |
776 | f->fmt.pix.pixelformat); | |
1e6dd65e MCC |
777 | return -EINVAL; |
778 | } | |
1e6dd65e MCC |
779 | |
780 | field = f->fmt.pix.field; | |
781 | ||
782 | if (field == V4L2_FIELD_ANY) { | |
543323bc | 783 | field = V4L2_FIELD_INTERLACED; |
1e6dd65e | 784 | } else if (V4L2_FIELD_INTERLACED != field) { |
6c2f9901 | 785 | dprintk(dev, 1, "Field type invalid.\n"); |
1e6dd65e MCC |
786 | return -EINVAL; |
787 | } | |
788 | ||
789 | maxw = norm_maxw(); | |
790 | maxh = norm_maxh(); | |
791 | ||
792 | f->fmt.pix.field = field; | |
793 | if (f->fmt.pix.height < 32) | |
794 | f->fmt.pix.height = 32; | |
795 | if (f->fmt.pix.height > maxh) | |
796 | f->fmt.pix.height = maxh; | |
797 | if (f->fmt.pix.width < 48) | |
798 | f->fmt.pix.width = 48; | |
799 | if (f->fmt.pix.width > maxw) | |
800 | f->fmt.pix.width = maxw; | |
801 | f->fmt.pix.width &= ~0x03; | |
802 | f->fmt.pix.bytesperline = | |
803 | (f->fmt.pix.width * fmt->depth) >> 3; | |
804 | f->fmt.pix.sizeimage = | |
805 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
806 | ||
807 | return 0; | |
808 | } | |
809 | ||
c820cc45 | 810 | /*FIXME: This seems to be generic enough to be at videodev2 */ |
78b526a4 | 811 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 | 812 | struct v4l2_format *f) |
1e6dd65e | 813 | { |
543323bc | 814 | struct vivi_fh *fh = priv; |
78718e5d | 815 | struct videobuf_queue *q = &fh->vb_vidq; |
74d7c5af | 816 | unsigned char r, g, b; |
d891f475 | 817 | int k, is_yuv; |
78718e5d | 818 | |
78b526a4 | 819 | int ret = vidioc_try_fmt_vid_cap(file, fh, f); |
c820cc45 MCC |
820 | if (ret < 0) |
821 | return (ret); | |
822 | ||
78718e5d BP |
823 | mutex_lock(&q->vb_lock); |
824 | ||
825 | if (videobuf_queue_is_busy(&fh->vb_vidq)) { | |
7e28adb2 | 826 | dprintk(fh->dev, 1, "%s queue busy\n", __func__); |
78718e5d BP |
827 | ret = -EBUSY; |
828 | goto out; | |
829 | } | |
830 | ||
d891f475 | 831 | fh->fmt = get_format(f); |
c820cc45 MCC |
832 | fh->width = f->fmt.pix.width; |
833 | fh->height = f->fmt.pix.height; | |
834 | fh->vb_vidq.field = f->fmt.pix.field; | |
835 | fh->type = f->type; | |
836 | ||
74d7c5af MD |
837 | /* precalculate color bar values to speed up rendering */ |
838 | for (k = 0; k < 8; k++) { | |
839 | r = bars[k][0]; | |
840 | g = bars[k][1]; | |
841 | b = bars[k][2]; | |
d891f475 | 842 | is_yuv = 0; |
74d7c5af | 843 | |
d891f475 MD |
844 | switch (fh->fmt->fourcc) { |
845 | case V4L2_PIX_FMT_YUYV: | |
fca36bab | 846 | case V4L2_PIX_FMT_UYVY: |
d891f475 MD |
847 | is_yuv = 1; |
848 | break; | |
aeadb5d4 MD |
849 | case V4L2_PIX_FMT_RGB565: |
850 | case V4L2_PIX_FMT_RGB565X: | |
851 | r >>= 3; | |
852 | g >>= 2; | |
853 | b >>= 3; | |
854 | break; | |
def52393 MD |
855 | case V4L2_PIX_FMT_RGB555: |
856 | case V4L2_PIX_FMT_RGB555X: | |
857 | r >>= 3; | |
858 | g >>= 3; | |
859 | b >>= 3; | |
860 | break; | |
d891f475 MD |
861 | } |
862 | ||
863 | if (is_yuv) { | |
864 | fh->bars[k][0] = TO_Y(r, g, b); /* Luma */ | |
865 | fh->bars[k][1] = TO_U(r, g, b); /* Cb */ | |
866 | fh->bars[k][2] = TO_V(r, g, b); /* Cr */ | |
867 | } else { | |
868 | fh->bars[k][0] = r; | |
869 | fh->bars[k][1] = g; | |
870 | fh->bars[k][2] = b; | |
871 | } | |
74d7c5af MD |
872 | } |
873 | ||
78718e5d BP |
874 | ret = 0; |
875 | out: | |
876 | mutex_unlock(&q->vb_lock); | |
877 | ||
878 | return (ret); | |
1e6dd65e MCC |
879 | } |
880 | ||
543323bc MCC |
881 | static int vidioc_reqbufs(struct file *file, void *priv, |
882 | struct v4l2_requestbuffers *p) | |
1e6dd65e | 883 | { |
543323bc | 884 | struct vivi_fh *fh = priv; |
1e6dd65e | 885 | |
c820cc45 | 886 | return (videobuf_reqbufs(&fh->vb_vidq, p)); |
1e6dd65e MCC |
887 | } |
888 | ||
543323bc | 889 | static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p) |
1e6dd65e | 890 | { |
543323bc | 891 | struct vivi_fh *fh = priv; |
1e6dd65e | 892 | |
c820cc45 MCC |
893 | return (videobuf_querybuf(&fh->vb_vidq, p)); |
894 | } | |
1e6dd65e | 895 | |
543323bc | 896 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
c820cc45 | 897 | { |
543323bc | 898 | struct vivi_fh *fh = priv; |
1e6dd65e | 899 | |
c820cc45 MCC |
900 | return (videobuf_qbuf(&fh->vb_vidq, p)); |
901 | } | |
1e6dd65e | 902 | |
543323bc | 903 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
c820cc45 | 904 | { |
543323bc | 905 | struct vivi_fh *fh = priv; |
1e6dd65e | 906 | |
c820cc45 MCC |
907 | return (videobuf_dqbuf(&fh->vb_vidq, p, |
908 | file->f_flags & O_NONBLOCK)); | |
909 | } | |
1e6dd65e | 910 | |
0dfa9abd | 911 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
543323bc | 912 | static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf) |
c820cc45 | 913 | { |
543323bc | 914 | struct vivi_fh *fh = priv; |
4ceb04e1 | 915 | |
543323bc | 916 | return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8); |
c820cc45 MCC |
917 | } |
918 | #endif | |
1e6dd65e | 919 | |
dc46ace1 | 920 | static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) |
c820cc45 | 921 | { |
543323bc | 922 | struct vivi_fh *fh = priv; |
1e6dd65e | 923 | |
c820cc45 MCC |
924 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
925 | return -EINVAL; | |
926 | if (i != fh->type) | |
927 | return -EINVAL; | |
1e6dd65e | 928 | |
ba32bd95 | 929 | return videobuf_streamon(&fh->vb_vidq); |
c820cc45 | 930 | } |
1e6dd65e | 931 | |
dc46ace1 | 932 | static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) |
c820cc45 | 933 | { |
543323bc | 934 | struct vivi_fh *fh = priv; |
1e6dd65e | 935 | |
c820cc45 MCC |
936 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
937 | return -EINVAL; | |
938 | if (i != fh->type) | |
939 | return -EINVAL; | |
1e6dd65e | 940 | |
ba32bd95 | 941 | return videobuf_streamoff(&fh->vb_vidq); |
c820cc45 MCC |
942 | } |
943 | ||
543323bc | 944 | static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *i) |
c820cc45 | 945 | { |
c820cc45 MCC |
946 | return 0; |
947 | } | |
1e6dd65e | 948 | |
c820cc45 | 949 | /* only one input in this sample driver */ |
543323bc | 950 | static int vidioc_enum_input(struct file *file, void *priv, |
c820cc45 MCC |
951 | struct v4l2_input *inp) |
952 | { | |
953 | if (inp->index != 0) | |
954 | return -EINVAL; | |
1e6dd65e | 955 | |
c820cc45 | 956 | inp->type = V4L2_INPUT_TYPE_CAMERA; |
784c668b | 957 | inp->std = V4L2_STD_525_60; |
543323bc | 958 | strcpy(inp->name, "Camera"); |
1e6dd65e | 959 | |
c820cc45 MCC |
960 | return (0); |
961 | } | |
1e6dd65e | 962 | |
543323bc | 963 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) |
c820cc45 MCC |
964 | { |
965 | *i = 0; | |
1e6dd65e | 966 | |
c820cc45 MCC |
967 | return (0); |
968 | } | |
543323bc | 969 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) |
c820cc45 MCC |
970 | { |
971 | if (i > 0) | |
972 | return -EINVAL; | |
1e6dd65e | 973 | |
c820cc45 MCC |
974 | return (0); |
975 | } | |
1e6dd65e MCC |
976 | |
977 | /* --- controls ---------------------------------------------- */ | |
543323bc MCC |
978 | static int vidioc_queryctrl(struct file *file, void *priv, |
979 | struct v4l2_queryctrl *qc) | |
c820cc45 MCC |
980 | { |
981 | int i; | |
1e6dd65e | 982 | |
c820cc45 MCC |
983 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
984 | if (qc->id && qc->id == vivi_qctrl[i].id) { | |
985 | memcpy(qc, &(vivi_qctrl[i]), | |
986 | sizeof(*qc)); | |
987 | return (0); | |
988 | } | |
1e6dd65e | 989 | |
c820cc45 MCC |
990 | return -EINVAL; |
991 | } | |
1e6dd65e | 992 | |
543323bc MCC |
993 | static int vidioc_g_ctrl(struct file *file, void *priv, |
994 | struct v4l2_control *ctrl) | |
c820cc45 MCC |
995 | { |
996 | int i; | |
1e6dd65e | 997 | |
c820cc45 MCC |
998 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
999 | if (ctrl->id == vivi_qctrl[i].id) { | |
543323bc | 1000 | ctrl->value = qctl_regs[i]; |
c820cc45 MCC |
1001 | return (0); |
1002 | } | |
1e6dd65e | 1003 | |
c820cc45 | 1004 | return -EINVAL; |
1e6dd65e | 1005 | } |
543323bc | 1006 | static int vidioc_s_ctrl(struct file *file, void *priv, |
c820cc45 | 1007 | struct v4l2_control *ctrl) |
1e6dd65e | 1008 | { |
c820cc45 MCC |
1009 | int i; |
1010 | ||
1011 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
1012 | if (ctrl->id == vivi_qctrl[i].id) { | |
543323bc MCC |
1013 | if (ctrl->value < vivi_qctrl[i].minimum |
1014 | || ctrl->value > vivi_qctrl[i].maximum) { | |
c820cc45 MCC |
1015 | return (-ERANGE); |
1016 | } | |
543323bc | 1017 | qctl_regs[i] = ctrl->value; |
c820cc45 MCC |
1018 | return (0); |
1019 | } | |
1020 | return -EINVAL; | |
1e6dd65e MCC |
1021 | } |
1022 | ||
1023 | /* ------------------------------------------------------------------ | |
1024 | File operations for the device | |
1025 | ------------------------------------------------------------------*/ | |
1026 | ||
bec43661 | 1027 | static int vivi_open(struct file *file) |
1e6dd65e | 1028 | { |
bec43661 | 1029 | int minor = video_devdata(file)->minor; |
a991f44b | 1030 | struct vivi_dev *dev; |
63b79cfa | 1031 | struct vivi_fh *fh = NULL; |
1e6dd65e | 1032 | int i; |
aa9dbac4 | 1033 | int retval = 0; |
1e6dd65e | 1034 | |
543323bc | 1035 | printk(KERN_DEBUG "vivi: open called (minor=%d)\n", minor); |
1e6dd65e | 1036 | |
d56dc612 | 1037 | lock_kernel(); |
a991f44b | 1038 | list_for_each_entry(dev, &vivi_devlist, vivi_devlist) |
f905c442 | 1039 | if (dev->vfd->minor == minor) |
a991f44b | 1040 | goto found; |
d56dc612 | 1041 | unlock_kernel(); |
a991f44b | 1042 | return -ENODEV; |
c820cc45 | 1043 | |
543323bc | 1044 | found: |
aa9dbac4 | 1045 | mutex_lock(&dev->mutex); |
1e6dd65e MCC |
1046 | dev->users++; |
1047 | ||
aa9dbac4 BP |
1048 | if (dev->users > 1) { |
1049 | dev->users--; | |
1050 | retval = -EBUSY; | |
1051 | goto unlock; | |
1052 | } | |
1053 | ||
6c2f9901 | 1054 | dprintk(dev, 1, "open minor=%d type=%s users=%d\n", minor, |
a991f44b | 1055 | v4l2_type_names[V4L2_BUF_TYPE_VIDEO_CAPTURE], dev->users); |
1e6dd65e MCC |
1056 | |
1057 | /* allocate + initialize per filehandle data */ | |
543323bc | 1058 | fh = kzalloc(sizeof(*fh), GFP_KERNEL); |
1e6dd65e MCC |
1059 | if (NULL == fh) { |
1060 | dev->users--; | |
aa9dbac4 BP |
1061 | retval = -ENOMEM; |
1062 | goto unlock; | |
1e6dd65e | 1063 | } |
aa9dbac4 BP |
1064 | unlock: |
1065 | mutex_unlock(&dev->mutex); | |
d56dc612 HV |
1066 | if (retval) { |
1067 | unlock_kernel(); | |
aa9dbac4 | 1068 | return retval; |
d56dc612 | 1069 | } |
1e6dd65e MCC |
1070 | |
1071 | file->private_data = fh; | |
1072 | fh->dev = dev; | |
c820cc45 | 1073 | |
1e6dd65e | 1074 | fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
d891f475 | 1075 | fh->fmt = &formats[0]; |
1e6dd65e MCC |
1076 | fh->width = 640; |
1077 | fh->height = 480; | |
1078 | ||
1079 | /* Put all controls at a sane state */ | |
1080 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
543323bc | 1081 | qctl_regs[i] = vivi_qctrl[i].default_value; |
1e6dd65e MCC |
1082 | |
1083 | /* Resets frame counters */ | |
543323bc MCC |
1084 | dev->h = 0; |
1085 | dev->m = 0; | |
1086 | dev->s = 0; | |
dfd8c04e | 1087 | dev->ms = 0; |
543323bc MCC |
1088 | dev->mv_count = 0; |
1089 | dev->jiffies = jiffies; | |
1090 | sprintf(dev->timestr, "%02d:%02d:%02d:%03d", | |
dfd8c04e | 1091 | dev->h, dev->m, dev->s, dev->ms); |
1e6dd65e | 1092 | |
5a037706 | 1093 | videobuf_queue_vmalloc_init(&fh->vb_vidq, &vivi_video_qops, |
55862ac9 | 1094 | NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED, |
543323bc | 1095 | sizeof(struct vivi_buffer), fh); |
1e6dd65e | 1096 | |
78718e5d | 1097 | vivi_start_thread(fh); |
d56dc612 | 1098 | unlock_kernel(); |
78718e5d | 1099 | |
1e6dd65e MCC |
1100 | return 0; |
1101 | } | |
1102 | ||
1103 | static ssize_t | |
1104 | vivi_read(struct file *file, char __user *data, size_t count, loff_t *ppos) | |
1105 | { | |
543323bc | 1106 | struct vivi_fh *fh = file->private_data; |
1e6dd65e | 1107 | |
543323bc | 1108 | if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
acb09af4 | 1109 | return videobuf_read_stream(&fh->vb_vidq, data, count, ppos, 0, |
1e6dd65e MCC |
1110 | file->f_flags & O_NONBLOCK); |
1111 | } | |
1112 | return 0; | |
1113 | } | |
1114 | ||
1115 | static unsigned int | |
1116 | vivi_poll(struct file *file, struct poll_table_struct *wait) | |
1117 | { | |
c820cc45 | 1118 | struct vivi_fh *fh = file->private_data; |
6c2f9901 | 1119 | struct vivi_dev *dev = fh->dev; |
85c7c70b | 1120 | struct videobuf_queue *q = &fh->vb_vidq; |
1e6dd65e | 1121 | |
7e28adb2 | 1122 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e MCC |
1123 | |
1124 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) | |
1125 | return POLLERR; | |
1126 | ||
85c7c70b | 1127 | return videobuf_poll_stream(file, q, wait); |
1e6dd65e MCC |
1128 | } |
1129 | ||
bec43661 | 1130 | static int vivi_close(struct file *file) |
1e6dd65e | 1131 | { |
c820cc45 MCC |
1132 | struct vivi_fh *fh = file->private_data; |
1133 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
1134 | struct vivi_dmaqueue *vidq = &dev->vidq; |
1135 | ||
bec43661 | 1136 | int minor = video_devdata(file)->minor; |
1e6dd65e MCC |
1137 | |
1138 | vivi_stop_thread(vidq); | |
053fcb60 | 1139 | videobuf_stop(&fh->vb_vidq); |
1e6dd65e MCC |
1140 | videobuf_mmap_free(&fh->vb_vidq); |
1141 | ||
55712ff7 | 1142 | kfree(fh); |
1e6dd65e | 1143 | |
aa9dbac4 | 1144 | mutex_lock(&dev->mutex); |
1e6dd65e | 1145 | dev->users--; |
aa9dbac4 | 1146 | mutex_unlock(&dev->mutex); |
1e6dd65e | 1147 | |
6c2f9901 MCC |
1148 | dprintk(dev, 1, "close called (minor=%d, users=%d)\n", |
1149 | minor, dev->users); | |
1e6dd65e MCC |
1150 | |
1151 | return 0; | |
1152 | } | |
1153 | ||
55712ff7 | 1154 | static int vivi_release(void) |
f905c442 | 1155 | { |
55712ff7 MCC |
1156 | struct vivi_dev *dev; |
1157 | struct list_head *list; | |
1158 | ||
1159 | while (!list_empty(&vivi_devlist)) { | |
1160 | list = vivi_devlist.next; | |
1161 | list_del(list); | |
1162 | dev = list_entry(list, struct vivi_dev, vivi_devlist); | |
f905c442 | 1163 | |
745271ae | 1164 | if (-1 != dev->vfd->minor) { |
8da9bae3 | 1165 | printk(KERN_INFO "%s: unregistering /dev/video%d\n", |
c6330fb8 | 1166 | VIVI_MODULE_NAME, dev->vfd->num); |
8da9bae3 | 1167 | video_unregister_device(dev->vfd); |
745271ae | 1168 | } else { |
8da9bae3 | 1169 | printk(KERN_INFO "%s: releasing /dev/video%d\n", |
c6330fb8 | 1170 | VIVI_MODULE_NAME, dev->vfd->num); |
8da9bae3 | 1171 | video_device_release(dev->vfd); |
745271ae | 1172 | } |
55712ff7 MCC |
1173 | |
1174 | kfree(dev); | |
1175 | } | |
f905c442 MCC |
1176 | |
1177 | return 0; | |
1178 | } | |
1179 | ||
543323bc | 1180 | static int vivi_mmap(struct file *file, struct vm_area_struct *vma) |
1e6dd65e | 1181 | { |
6c2f9901 MCC |
1182 | struct vivi_fh *fh = file->private_data; |
1183 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
1184 | int ret; |
1185 | ||
6c2f9901 | 1186 | dprintk(dev, 1, "mmap called, vma=0x%08lx\n", (unsigned long)vma); |
1e6dd65e | 1187 | |
543323bc | 1188 | ret = videobuf_mmap_mapper(&fh->vb_vidq, vma); |
1e6dd65e | 1189 | |
6c2f9901 | 1190 | dprintk(dev, 1, "vma start=0x%08lx, size=%ld, ret=%d\n", |
1e6dd65e MCC |
1191 | (unsigned long)vma->vm_start, |
1192 | (unsigned long)vma->vm_end-(unsigned long)vma->vm_start, | |
1193 | ret); | |
1194 | ||
1195 | return ret; | |
1196 | } | |
1197 | ||
bec43661 | 1198 | static const struct v4l2_file_operations vivi_fops = { |
1e6dd65e MCC |
1199 | .owner = THIS_MODULE, |
1200 | .open = vivi_open, | |
f905c442 | 1201 | .release = vivi_close, |
1e6dd65e MCC |
1202 | .read = vivi_read, |
1203 | .poll = vivi_poll, | |
c820cc45 | 1204 | .ioctl = video_ioctl2, /* V4L2 ioctl handler */ |
5a037706 | 1205 | .mmap = vivi_mmap, |
1e6dd65e MCC |
1206 | }; |
1207 | ||
a399810c | 1208 | static const struct v4l2_ioctl_ops vivi_ioctl_ops = { |
c820cc45 | 1209 | .vidioc_querycap = vidioc_querycap, |
78b526a4 HV |
1210 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, |
1211 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
1212 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
1213 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
c820cc45 MCC |
1214 | .vidioc_reqbufs = vidioc_reqbufs, |
1215 | .vidioc_querybuf = vidioc_querybuf, | |
1216 | .vidioc_qbuf = vidioc_qbuf, | |
1217 | .vidioc_dqbuf = vidioc_dqbuf, | |
1218 | .vidioc_s_std = vidioc_s_std, | |
1219 | .vidioc_enum_input = vidioc_enum_input, | |
1220 | .vidioc_g_input = vidioc_g_input, | |
1221 | .vidioc_s_input = vidioc_s_input, | |
1222 | .vidioc_queryctrl = vidioc_queryctrl, | |
1223 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
1224 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
1225 | .vidioc_streamon = vidioc_streamon, | |
1226 | .vidioc_streamoff = vidioc_streamoff, | |
0dfa9abd | 1227 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
c820cc45 MCC |
1228 | .vidiocgmbuf = vidiocgmbuf, |
1229 | #endif | |
a399810c HV |
1230 | }; |
1231 | ||
1232 | static struct video_device vivi_template = { | |
1233 | .name = "vivi", | |
a399810c HV |
1234 | .fops = &vivi_fops, |
1235 | .ioctl_ops = &vivi_ioctl_ops, | |
1236 | .minor = -1, | |
1237 | .release = video_device_release, | |
1238 | ||
784c668b | 1239 | .tvnorms = V4L2_STD_525_60, |
e75f9cee | 1240 | .current_norm = V4L2_STD_NTSC_M, |
1e6dd65e | 1241 | }; |
c820cc45 | 1242 | /* ----------------------------------------------------------------- |
1e6dd65e MCC |
1243 | Initialization and module stuff |
1244 | ------------------------------------------------------------------*/ | |
1245 | ||
980d4f17 MCC |
1246 | /* This routine allocates from 1 to n_devs virtual drivers. |
1247 | ||
1248 | The real maximum number of virtual drivers will depend on how many drivers | |
1249 | will succeed. This is limited to the maximum number of devices that | |
1250 | videodev supports. Since there are 64 minors for video grabbers, this is | |
1251 | currently the theoretical maximum limit. However, a further limit does | |
1252 | exist at videodev that forbids any driver to register more than 32 video | |
1253 | grabbers. | |
1254 | */ | |
1e6dd65e MCC |
1255 | static int __init vivi_init(void) |
1256 | { | |
55712ff7 | 1257 | int ret = -ENOMEM, i; |
1e6dd65e | 1258 | struct vivi_dev *dev; |
f905c442 | 1259 | struct video_device *vfd; |
1e6dd65e | 1260 | |
980d4f17 MCC |
1261 | if (n_devs <= 0) |
1262 | n_devs = 1; | |
1263 | ||
55712ff7 MCC |
1264 | for (i = 0; i < n_devs; i++) { |
1265 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); | |
980d4f17 | 1266 | if (!dev) |
55712ff7 | 1267 | break; |
1e6dd65e | 1268 | |
55712ff7 MCC |
1269 | /* init video dma queues */ |
1270 | INIT_LIST_HEAD(&dev->vidq.active); | |
55712ff7 | 1271 | init_waitqueue_head(&dev->vidq.wq); |
1e6dd65e | 1272 | |
55712ff7 | 1273 | /* initialize locks */ |
55862ac9 | 1274 | spin_lock_init(&dev->slock); |
aa9dbac4 | 1275 | mutex_init(&dev->mutex); |
1e6dd65e | 1276 | |
55712ff7 | 1277 | vfd = video_device_alloc(); |
980d4f17 MCC |
1278 | if (!vfd) { |
1279 | kfree(dev); | |
55712ff7 | 1280 | break; |
980d4f17 | 1281 | } |
55712ff7 MCC |
1282 | |
1283 | *vfd = vivi_template; | |
1284 | ||
1285 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr); | |
980d4f17 MCC |
1286 | if (ret < 0) { |
1287 | video_device_release(vfd); | |
1288 | kfree(dev); | |
1289 | ||
1290 | /* If some registers succeeded, keep driver */ | |
1291 | if (i) | |
1292 | ret = 0; | |
1293 | ||
55712ff7 | 1294 | break; |
980d4f17 MCC |
1295 | } |
1296 | ||
1297 | /* Now that everything is fine, let's add it to device list */ | |
1298 | list_add_tail(&dev->vivi_devlist, &vivi_devlist); | |
55712ff7 MCC |
1299 | |
1300 | snprintf(vfd->name, sizeof(vfd->name), "%s (%i)", | |
1301 | vivi_template.name, vfd->minor); | |
f905c442 | 1302 | |
55712ff7 MCC |
1303 | if (video_nr >= 0) |
1304 | video_nr++; | |
f905c442 | 1305 | |
55712ff7 | 1306 | dev->vfd = vfd; |
745271ae | 1307 | printk(KERN_INFO "%s: V4L2 device registered as /dev/video%d\n", |
c6330fb8 | 1308 | VIVI_MODULE_NAME, vfd->num); |
55712ff7 | 1309 | } |
f905c442 | 1310 | |
55712ff7 MCC |
1311 | if (ret < 0) { |
1312 | vivi_release(); | |
1313 | printk(KERN_INFO "Error %d while loading vivi driver\n", ret); | |
980d4f17 | 1314 | } else { |
55712ff7 | 1315 | printk(KERN_INFO "Video Technology Magazine Virtual Video " |
745271ae CK |
1316 | "Capture Board ver %u.%u.%u successfully loaded.\n", |
1317 | (VIVI_VERSION >> 16) & 0xFF, (VIVI_VERSION >> 8) & 0xFF, | |
1318 | VIVI_VERSION & 0xFF); | |
980d4f17 MCC |
1319 | |
1320 | /* n_devs will reflect the actual number of allocated devices */ | |
1321 | n_devs = i; | |
1322 | } | |
1323 | ||
1e6dd65e MCC |
1324 | return ret; |
1325 | } | |
1326 | ||
1327 | static void __exit vivi_exit(void) | |
1328 | { | |
55712ff7 | 1329 | vivi_release(); |
1e6dd65e MCC |
1330 | } |
1331 | ||
1332 | module_init(vivi_init); | |
1333 | module_exit(vivi_exit); | |
c820cc45 MCC |
1334 | |
1335 | MODULE_DESCRIPTION("Video Technology Magazine Virtual Video Capture Board"); | |
1336 | MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol"); | |
1337 | MODULE_LICENSE("Dual BSD/GPL"); | |
1338 | ||
980d4f17 | 1339 | module_param(video_nr, uint, 0444); |
55712ff7 | 1340 | MODULE_PARM_DESC(video_nr, "video iminor start number"); |
c820cc45 | 1341 | |
980d4f17 | 1342 | module_param(n_devs, uint, 0444); |
55712ff7 | 1343 | MODULE_PARM_DESC(n_devs, "number of video devices to create"); |
c820cc45 | 1344 | |
8996b3f3 | 1345 | module_param_named(debug, vivi_template.debug, int, 0444); |
55712ff7 | 1346 | MODULE_PARM_DESC(debug, "activates debug info"); |
c820cc45 | 1347 | |
55712ff7 MCC |
1348 | module_param(vid_limit, int, 0644); |
1349 | MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes"); |