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 | }, | |
1e6dd65e MCC |
142 | }; |
143 | ||
d891f475 MD |
144 | static struct vivi_fmt *get_format(struct v4l2_format *f) |
145 | { | |
146 | struct vivi_fmt *fmt; | |
147 | unsigned int k; | |
148 | ||
149 | for (k = 0; k < ARRAY_SIZE(formats); k++) { | |
150 | fmt = &formats[k]; | |
151 | if (fmt->fourcc == f->fmt.pix.pixelformat) | |
152 | break; | |
153 | } | |
154 | ||
155 | if (k == ARRAY_SIZE(formats)) | |
156 | return NULL; | |
157 | ||
158 | return &formats[k]; | |
159 | } | |
160 | ||
1e6dd65e MCC |
161 | struct sg_to_addr { |
162 | int pos; | |
163 | struct scatterlist *sg; | |
164 | }; | |
165 | ||
166 | /* buffer for one video frame */ | |
167 | struct vivi_buffer { | |
168 | /* common v4l buffer stuff -- must be first */ | |
169 | struct videobuf_buffer vb; | |
170 | ||
171 | struct vivi_fmt *fmt; | |
1e6dd65e MCC |
172 | }; |
173 | ||
174 | struct vivi_dmaqueue { | |
175 | struct list_head active; | |
1e6dd65e MCC |
176 | |
177 | /* thread for generating video stream*/ | |
178 | struct task_struct *kthread; | |
179 | wait_queue_head_t wq; | |
180 | /* Counters to control fps rate */ | |
181 | int frame; | |
182 | int ini_jiffies; | |
183 | }; | |
184 | ||
185 | static LIST_HEAD(vivi_devlist); | |
186 | ||
187 | struct vivi_dev { | |
188 | struct list_head vivi_devlist; | |
189 | ||
55862ac9 | 190 | spinlock_t slock; |
aa9dbac4 | 191 | struct mutex mutex; |
1e6dd65e MCC |
192 | |
193 | int users; | |
194 | ||
195 | /* various device info */ | |
f905c442 | 196 | struct video_device *vfd; |
1e6dd65e MCC |
197 | |
198 | struct vivi_dmaqueue vidq; | |
199 | ||
200 | /* Several counters */ | |
dfd8c04e MCC |
201 | int h, m, s, ms; |
202 | unsigned long jiffies; | |
1e6dd65e | 203 | char timestr[13]; |
025341d4 MCC |
204 | |
205 | int mv_count; /* Controls bars movement */ | |
1e6dd65e MCC |
206 | }; |
207 | ||
208 | struct vivi_fh { | |
209 | struct vivi_dev *dev; | |
210 | ||
211 | /* video capture */ | |
212 | struct vivi_fmt *fmt; | |
543323bc | 213 | unsigned int width, height; |
1e6dd65e MCC |
214 | struct videobuf_queue vb_vidq; |
215 | ||
216 | enum v4l2_buf_type type; | |
74d7c5af | 217 | unsigned char bars[8][3]; |
1e6dd65e MCC |
218 | }; |
219 | ||
220 | /* ------------------------------------------------------------------ | |
221 | DMA and thread functions | |
222 | ------------------------------------------------------------------*/ | |
223 | ||
224 | /* Bars and Colors should match positions */ | |
225 | ||
226 | enum colors { | |
227 | WHITE, | |
228 | AMBAR, | |
229 | CYAN, | |
230 | GREEN, | |
231 | MAGENTA, | |
232 | RED, | |
543323bc MCC |
233 | BLUE, |
234 | BLACK, | |
1e6dd65e MCC |
235 | }; |
236 | ||
237 | static u8 bars[8][3] = { | |
238 | /* R G B */ | |
543323bc MCC |
239 | {204, 204, 204}, /* white */ |
240 | {208, 208, 0}, /* ambar */ | |
241 | { 0, 206, 206}, /* cyan */ | |
242 | { 0, 239, 0}, /* green */ | |
243 | {239, 0, 239}, /* magenta */ | |
244 | {205, 0, 0}, /* red */ | |
245 | { 0, 0, 255}, /* blue */ | |
246 | { 0, 0, 0}, /* black */ | |
1e6dd65e MCC |
247 | }; |
248 | ||
543323bc MCC |
249 | #define TO_Y(r, g, b) \ |
250 | (((16829 * r + 33039 * g + 6416 * b + 32768) >> 16) + 16) | |
1e6dd65e | 251 | /* RGB to V(Cr) Color transform */ |
543323bc MCC |
252 | #define TO_V(r, g, b) \ |
253 | (((28784 * r - 24103 * g - 4681 * b + 32768) >> 16) + 128) | |
1e6dd65e | 254 | /* RGB to U(Cb) Color transform */ |
543323bc MCC |
255 | #define TO_U(r, g, b) \ |
256 | (((-9714 * r - 19070 * g + 28784 * b + 32768) >> 16) + 128) | |
1e6dd65e MCC |
257 | |
258 | #define TSTAMP_MIN_Y 24 | |
259 | #define TSTAMP_MAX_Y TSTAMP_MIN_Y+15 | |
260 | #define TSTAMP_MIN_X 64 | |
261 | ||
74d7c5af MD |
262 | static void gen_twopix(struct vivi_fh *fh, unsigned char *buf, int colorpos) |
263 | { | |
264 | unsigned char r_y, g_u, b_v; | |
265 | unsigned char *p; | |
266 | int color; | |
267 | ||
268 | r_y = fh->bars[colorpos][0]; /* R or precalculated Y */ | |
269 | g_u = fh->bars[colorpos][1]; /* G or precalculated U */ | |
270 | b_v = fh->bars[colorpos][2]; /* B or precalculated V */ | |
271 | ||
272 | for (color = 0; color < 4; color++) { | |
273 | p = buf + color; | |
274 | ||
d891f475 MD |
275 | switch (fh->fmt->fourcc) { |
276 | case V4L2_PIX_FMT_YUYV: | |
277 | switch (color) { | |
278 | case 0: | |
279 | case 2: | |
280 | *p = r_y; | |
281 | break; | |
282 | case 1: | |
283 | *p = g_u; | |
284 | break; | |
285 | case 3: | |
286 | *p = b_v; | |
287 | break; | |
288 | } | |
74d7c5af | 289 | break; |
fca36bab MD |
290 | case V4L2_PIX_FMT_UYVY: |
291 | switch (color) { | |
292 | case 1: | |
293 | case 3: | |
294 | *p = r_y; | |
295 | break; | |
296 | case 0: | |
297 | *p = g_u; | |
298 | break; | |
299 | case 2: | |
300 | *p = b_v; | |
301 | break; | |
302 | } | |
303 | break; | |
74d7c5af MD |
304 | } |
305 | } | |
306 | } | |
307 | ||
308 | static void gen_line(struct vivi_fh *fh, char *basep, int inipos, int wmax, | |
543323bc | 309 | int hmax, int line, int count, char *timestr) |
1e6dd65e | 310 | { |
74d7c5af | 311 | int w, i, j; |
543323bc | 312 | int pos = inipos; |
74d7c5af MD |
313 | char *s; |
314 | u8 chr; | |
1e6dd65e MCC |
315 | |
316 | /* We will just duplicate the second pixel at the packet */ | |
543323bc | 317 | wmax /= 2; |
1e6dd65e MCC |
318 | |
319 | /* Generate a standard color bar pattern */ | |
543323bc MCC |
320 | for (w = 0; w < wmax; w++) { |
321 | int colorpos = ((w + count) * 8/(wmax + 1)) % 8; | |
74d7c5af MD |
322 | |
323 | gen_twopix(fh, basep + pos, colorpos); | |
324 | pos += 4; /* only 16 bpp supported for now */ | |
1e6dd65e MCC |
325 | } |
326 | ||
327 | /* Checks if it is possible to show timestamp */ | |
543323bc | 328 | if (TSTAMP_MAX_Y >= hmax) |
1e6dd65e | 329 | goto end; |
543323bc | 330 | if (TSTAMP_MIN_X + strlen(timestr) >= wmax) |
1e6dd65e MCC |
331 | goto end; |
332 | ||
333 | /* Print stream time */ | |
543323bc MCC |
334 | if (line >= TSTAMP_MIN_Y && line <= TSTAMP_MAX_Y) { |
335 | j = TSTAMP_MIN_X; | |
336 | for (s = timestr; *s; s++) { | |
337 | chr = rom8x16_bits[(*s-0x30)*16+line-TSTAMP_MIN_Y]; | |
338 | for (i = 0; i < 7; i++) { | |
543323bc | 339 | pos = inipos + j * 2; |
74d7c5af MD |
340 | /* Draw white font on black background */ |
341 | if (chr & 1 << (7 - i)) | |
342 | gen_twopix(fh, basep + pos, WHITE); | |
343 | else | |
344 | gen_twopix(fh, basep + pos, BLACK); | |
1e6dd65e MCC |
345 | j++; |
346 | } | |
347 | } | |
348 | } | |
349 | ||
1e6dd65e | 350 | end: |
b50e7fe9 | 351 | return; |
1e6dd65e | 352 | } |
78718e5d | 353 | |
74d7c5af | 354 | static void vivi_fillbuff(struct vivi_fh *fh, struct vivi_buffer *buf) |
1e6dd65e | 355 | { |
74d7c5af | 356 | struct vivi_dev *dev = fh->dev; |
543323bc | 357 | int h , pos = 0; |
1e6dd65e MCC |
358 | int hmax = buf->vb.height; |
359 | int wmax = buf->vb.width; | |
1e6dd65e | 360 | struct timeval ts; |
5c554e6b | 361 | char *tmpbuf; |
543323bc | 362 | void *vbuf = videobuf_to_vmalloc(&buf->vb); |
b50e7fe9 | 363 | |
5c554e6b | 364 | if (!vbuf) |
5a037706 | 365 | return; |
1e6dd65e | 366 | |
5c554e6b MS |
367 | tmpbuf = kmalloc(wmax * 2, GFP_ATOMIC); |
368 | if (!tmpbuf) | |
78718e5d BP |
369 | return; |
370 | ||
543323bc | 371 | for (h = 0; h < hmax; h++) { |
74d7c5af | 372 | gen_line(fh, tmpbuf, 0, wmax, hmax, h, dev->mv_count, |
3bef5e4a | 373 | dev->timestr); |
78718e5d | 374 | memcpy(vbuf + pos, tmpbuf, wmax * 2); |
1e6dd65e MCC |
375 | pos += wmax*2; |
376 | } | |
377 | ||
025341d4 | 378 | dev->mv_count++; |
3bef5e4a | 379 | |
5a037706 MCC |
380 | kfree(tmpbuf); |
381 | ||
1e6dd65e MCC |
382 | /* Updates stream time */ |
383 | ||
dfd8c04e | 384 | dev->ms += jiffies_to_msecs(jiffies-dev->jiffies); |
543323bc | 385 | dev->jiffies = jiffies; |
dfd8c04e MCC |
386 | if (dev->ms >= 1000) { |
387 | dev->ms -= 1000; | |
1e6dd65e | 388 | dev->s++; |
543323bc MCC |
389 | if (dev->s >= 60) { |
390 | dev->s -= 60; | |
1e6dd65e | 391 | dev->m++; |
543323bc MCC |
392 | if (dev->m > 60) { |
393 | dev->m -= 60; | |
1e6dd65e | 394 | dev->h++; |
543323bc MCC |
395 | if (dev->h > 24) |
396 | dev->h -= 24; | |
1e6dd65e MCC |
397 | } |
398 | } | |
399 | } | |
543323bc | 400 | sprintf(dev->timestr, "%02d:%02d:%02d:%03d", |
dfd8c04e | 401 | dev->h, dev->m, dev->s, dev->ms); |
1e6dd65e | 402 | |
6c2f9901 MCC |
403 | dprintk(dev, 2, "vivifill at %s: Buffer 0x%08lx size= %d\n", |
404 | dev->timestr, (unsigned long)tmpbuf, pos); | |
1e6dd65e MCC |
405 | |
406 | /* Advice that buffer was filled */ | |
1e6dd65e MCC |
407 | buf->vb.field_count++; |
408 | do_gettimeofday(&ts); | |
409 | buf->vb.ts = ts; | |
78718e5d | 410 | buf->vb.state = VIDEOBUF_DONE; |
1e6dd65e MCC |
411 | } |
412 | ||
78718e5d | 413 | static void vivi_thread_tick(struct vivi_fh *fh) |
1e6dd65e | 414 | { |
78718e5d BP |
415 | struct vivi_buffer *buf; |
416 | struct vivi_dev *dev = fh->dev; | |
417 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
1e6dd65e | 418 | |
78718e5d | 419 | unsigned long flags = 0; |
1e6dd65e | 420 | |
78718e5d | 421 | dprintk(dev, 1, "Thread tick\n"); |
1e6dd65e | 422 | |
78718e5d BP |
423 | spin_lock_irqsave(&dev->slock, flags); |
424 | if (list_empty(&dma_q->active)) { | |
425 | dprintk(dev, 1, "No active queue to serve\n"); | |
426 | goto unlock; | |
427 | } | |
1e6dd65e | 428 | |
78718e5d BP |
429 | buf = list_entry(dma_q->active.next, |
430 | struct vivi_buffer, vb.queue); | |
1e6dd65e | 431 | |
78718e5d BP |
432 | /* Nobody is waiting on this buffer, return */ |
433 | if (!waitqueue_active(&buf->vb.done)) | |
434 | goto unlock; | |
1e6dd65e | 435 | |
78718e5d | 436 | list_del(&buf->vb.queue); |
0b600512 | 437 | |
78718e5d BP |
438 | do_gettimeofday(&buf->vb.ts); |
439 | ||
440 | /* Fill buffer */ | |
74d7c5af | 441 | vivi_fillbuff(fh, buf); |
78718e5d BP |
442 | dprintk(dev, 1, "filled buffer %p\n", buf); |
443 | ||
444 | wake_up(&buf->vb.done); | |
445 | dprintk(dev, 2, "[%p/%d] wakeup\n", buf, buf->vb. i); | |
446 | unlock: | |
447 | spin_unlock_irqrestore(&dev->slock, flags); | |
448 | return; | |
1e6dd65e MCC |
449 | } |
450 | ||
6594ad82 MCC |
451 | #define frames_to_ms(frames) \ |
452 | ((frames * WAKE_NUMERATOR * 1000) / WAKE_DENOMINATOR) | |
453 | ||
78718e5d | 454 | static void vivi_sleep(struct vivi_fh *fh) |
1e6dd65e | 455 | { |
78718e5d BP |
456 | struct vivi_dev *dev = fh->dev; |
457 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
458 | int timeout; | |
1e6dd65e MCC |
459 | DECLARE_WAITQUEUE(wait, current); |
460 | ||
7e28adb2 | 461 | dprintk(dev, 1, "%s dma_q=0x%08lx\n", __func__, |
6c2f9901 | 462 | (unsigned long)dma_q); |
1e6dd65e MCC |
463 | |
464 | add_wait_queue(&dma_q->wq, &wait); | |
6594ad82 MCC |
465 | if (kthread_should_stop()) |
466 | goto stop_task; | |
467 | ||
6594ad82 | 468 | /* Calculate time to wake up */ |
78718e5d | 469 | timeout = msecs_to_jiffies(frames_to_ms(1)); |
6594ad82 | 470 | |
78718e5d | 471 | vivi_thread_tick(fh); |
6594ad82 MCC |
472 | |
473 | schedule_timeout_interruptible(timeout); | |
1e6dd65e | 474 | |
6594ad82 | 475 | stop_task: |
1e6dd65e MCC |
476 | remove_wait_queue(&dma_q->wq, &wait); |
477 | try_to_freeze(); | |
478 | } | |
479 | ||
972c3517 | 480 | static int vivi_thread(void *data) |
1e6dd65e | 481 | { |
78718e5d BP |
482 | struct vivi_fh *fh = data; |
483 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e | 484 | |
6c2f9901 | 485 | dprintk(dev, 1, "thread started\n"); |
1e6dd65e | 486 | |
83144186 | 487 | set_freezable(); |
0b600512 | 488 | |
1e6dd65e | 489 | for (;;) { |
78718e5d | 490 | vivi_sleep(fh); |
1e6dd65e MCC |
491 | |
492 | if (kthread_should_stop()) | |
493 | break; | |
494 | } | |
6c2f9901 | 495 | dprintk(dev, 1, "thread: exit\n"); |
1e6dd65e MCC |
496 | return 0; |
497 | } | |
498 | ||
78718e5d | 499 | static int vivi_start_thread(struct vivi_fh *fh) |
1e6dd65e | 500 | { |
78718e5d BP |
501 | struct vivi_dev *dev = fh->dev; |
502 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
6c2f9901 | 503 | |
543323bc MCC |
504 | dma_q->frame = 0; |
505 | dma_q->ini_jiffies = jiffies; | |
1e6dd65e | 506 | |
7e28adb2 | 507 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e | 508 | |
78718e5d | 509 | dma_q->kthread = kthread_run(vivi_thread, fh, "vivi"); |
1e6dd65e | 510 | |
054afee4 | 511 | if (IS_ERR(dma_q->kthread)) { |
1e6dd65e | 512 | printk(KERN_ERR "vivi: kernel_thread() failed\n"); |
054afee4 | 513 | return PTR_ERR(dma_q->kthread); |
1e6dd65e | 514 | } |
0b600512 MCC |
515 | /* Wakes thread */ |
516 | wake_up_interruptible(&dma_q->wq); | |
517 | ||
7e28adb2 | 518 | dprintk(dev, 1, "returning from %s\n", __func__); |
1e6dd65e MCC |
519 | return 0; |
520 | } | |
521 | ||
972c3517 | 522 | static void vivi_stop_thread(struct vivi_dmaqueue *dma_q) |
1e6dd65e | 523 | { |
6c2f9901 MCC |
524 | struct vivi_dev *dev = container_of(dma_q, struct vivi_dev, vidq); |
525 | ||
7e28adb2 | 526 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e MCC |
527 | /* shutdown control thread */ |
528 | if (dma_q->kthread) { | |
529 | kthread_stop(dma_q->kthread); | |
543323bc | 530 | dma_q->kthread = NULL; |
1e6dd65e MCC |
531 | } |
532 | } | |
533 | ||
1e6dd65e MCC |
534 | /* ------------------------------------------------------------------ |
535 | Videobuf operations | |
536 | ------------------------------------------------------------------*/ | |
537 | static int | |
538 | buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) | |
539 | { | |
6c2f9901 MCC |
540 | struct vivi_fh *fh = vq->priv_data; |
541 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
542 | |
543 | *size = fh->width*fh->height*2; | |
544 | ||
545 | if (0 == *count) | |
546 | *count = 32; | |
6bb2790f | 547 | |
1e6dd65e MCC |
548 | while (*size * *count > vid_limit * 1024 * 1024) |
549 | (*count)--; | |
6bb2790f | 550 | |
7e28adb2 | 551 | dprintk(dev, 1, "%s, count=%d, size=%d\n", __func__, |
6c2f9901 | 552 | *count, *size); |
6bb2790f | 553 | |
1e6dd65e MCC |
554 | return 0; |
555 | } | |
556 | ||
972c3517 | 557 | static void free_buffer(struct videobuf_queue *vq, struct vivi_buffer *buf) |
1e6dd65e | 558 | { |
6c2f9901 MCC |
559 | struct vivi_fh *fh = vq->priv_data; |
560 | struct vivi_dev *dev = fh->dev; | |
561 | ||
7e28adb2 | 562 | dprintk(dev, 1, "%s, state: %i\n", __func__, buf->vb.state); |
1e6dd65e MCC |
563 | |
564 | if (in_interrupt()) | |
565 | BUG(); | |
566 | ||
5a037706 | 567 | videobuf_vmalloc_free(&buf->vb); |
fbde31d5 | 568 | dprintk(dev, 1, "free_buffer: freed\n"); |
0fc0686e | 569 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
1e6dd65e MCC |
570 | } |
571 | ||
572 | #define norm_maxw() 1024 | |
573 | #define norm_maxh() 768 | |
574 | static int | |
575 | buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, | |
576 | enum v4l2_field field) | |
577 | { | |
578 | struct vivi_fh *fh = vq->priv_data; | |
6c2f9901 | 579 | struct vivi_dev *dev = fh->dev; |
543323bc | 580 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
78718e5d | 581 | int rc; |
1e6dd65e | 582 | |
7e28adb2 | 583 | dprintk(dev, 1, "%s, field=%d\n", __func__, field); |
1e6dd65e MCC |
584 | |
585 | BUG_ON(NULL == fh->fmt); | |
78718e5d | 586 | |
1e6dd65e MCC |
587 | if (fh->width < 48 || fh->width > norm_maxw() || |
588 | fh->height < 32 || fh->height > norm_maxh()) | |
589 | return -EINVAL; | |
78718e5d | 590 | |
1e6dd65e MCC |
591 | buf->vb.size = fh->width*fh->height*2; |
592 | if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) | |
593 | return -EINVAL; | |
594 | ||
78718e5d BP |
595 | /* These properties only change when queue is idle, see s_fmt */ |
596 | buf->fmt = fh->fmt; | |
597 | buf->vb.width = fh->width; | |
598 | buf->vb.height = fh->height; | |
599 | buf->vb.field = field; | |
1e6dd65e | 600 | |
0fc0686e | 601 | if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { |
543323bc MCC |
602 | rc = videobuf_iolock(vq, &buf->vb, NULL); |
603 | if (rc < 0) | |
1e6dd65e MCC |
604 | goto fail; |
605 | } | |
606 | ||
0fc0686e | 607 | buf->vb.state = VIDEOBUF_PREPARED; |
1e6dd65e | 608 | |
1e6dd65e MCC |
609 | return 0; |
610 | ||
611 | fail: | |
543323bc | 612 | free_buffer(vq, buf); |
1e6dd65e MCC |
613 | return rc; |
614 | } | |
615 | ||
616 | static void | |
617 | buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) | |
618 | { | |
543323bc MCC |
619 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
620 | struct vivi_fh *fh = vq->priv_data; | |
621 | struct vivi_dev *dev = fh->dev; | |
78718e5d BP |
622 | struct vivi_dmaqueue *vidq = &dev->vidq; |
623 | ||
7e28adb2 | 624 | dprintk(dev, 1, "%s\n", __func__); |
78718e5d BP |
625 | |
626 | buf->vb.state = VIDEOBUF_QUEUED; | |
627 | list_add_tail(&buf->vb.queue, &vidq->active); | |
1e6dd65e MCC |
628 | } |
629 | ||
543323bc MCC |
630 | static void buffer_release(struct videobuf_queue *vq, |
631 | struct videobuf_buffer *vb) | |
1e6dd65e | 632 | { |
543323bc | 633 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
1e6dd65e | 634 | struct vivi_fh *fh = vq->priv_data; |
543323bc | 635 | struct vivi_dev *dev = (struct vivi_dev *)fh->dev; |
1e6dd65e | 636 | |
7e28adb2 | 637 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e | 638 | |
543323bc | 639 | free_buffer(vq, buf); |
1e6dd65e MCC |
640 | } |
641 | ||
1e6dd65e MCC |
642 | static struct videobuf_queue_ops vivi_video_qops = { |
643 | .buf_setup = buffer_setup, | |
644 | .buf_prepare = buffer_prepare, | |
645 | .buf_queue = buffer_queue, | |
646 | .buf_release = buffer_release, | |
1e6dd65e MCC |
647 | }; |
648 | ||
c820cc45 MCC |
649 | /* ------------------------------------------------------------------ |
650 | IOCTL vidioc handling | |
651 | ------------------------------------------------------------------*/ | |
543323bc | 652 | static int vidioc_querycap(struct file *file, void *priv, |
c820cc45 MCC |
653 | struct v4l2_capability *cap) |
654 | { | |
655 | strcpy(cap->driver, "vivi"); | |
656 | strcpy(cap->card, "vivi"); | |
657 | cap->version = VIVI_VERSION; | |
658 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | | |
659 | V4L2_CAP_STREAMING | | |
660 | V4L2_CAP_READWRITE; | |
661 | return 0; | |
662 | } | |
663 | ||
78b526a4 | 664 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 MCC |
665 | struct v4l2_fmtdesc *f) |
666 | { | |
d891f475 MD |
667 | struct vivi_fmt *fmt; |
668 | ||
669 | if (f->index >= ARRAY_SIZE(formats)) | |
c820cc45 MCC |
670 | return -EINVAL; |
671 | ||
d891f475 MD |
672 | fmt = &formats[f->index]; |
673 | ||
674 | strlcpy(f->description, fmt->name, sizeof(f->description)); | |
675 | f->pixelformat = fmt->fourcc; | |
c820cc45 MCC |
676 | return 0; |
677 | } | |
678 | ||
78b526a4 | 679 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 MCC |
680 | struct v4l2_format *f) |
681 | { | |
543323bc | 682 | struct vivi_fh *fh = priv; |
c820cc45 MCC |
683 | |
684 | f->fmt.pix.width = fh->width; | |
685 | f->fmt.pix.height = fh->height; | |
686 | f->fmt.pix.field = fh->vb_vidq.field; | |
687 | f->fmt.pix.pixelformat = fh->fmt->fourcc; | |
688 | f->fmt.pix.bytesperline = | |
689 | (f->fmt.pix.width * fh->fmt->depth) >> 3; | |
690 | f->fmt.pix.sizeimage = | |
691 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
692 | ||
693 | return (0); | |
694 | } | |
695 | ||
78b526a4 | 696 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, |
1e6dd65e MCC |
697 | struct v4l2_format *f) |
698 | { | |
6c2f9901 MCC |
699 | struct vivi_fh *fh = priv; |
700 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
701 | struct vivi_fmt *fmt; |
702 | enum v4l2_field field; | |
703 | unsigned int maxw, maxh; | |
704 | ||
d891f475 MD |
705 | fmt = get_format(f); |
706 | if (!fmt) { | |
707 | dprintk(dev, 1, "Fourcc format (0x%08x) invalid.\n", | |
708 | f->fmt.pix.pixelformat); | |
1e6dd65e MCC |
709 | return -EINVAL; |
710 | } | |
1e6dd65e MCC |
711 | |
712 | field = f->fmt.pix.field; | |
713 | ||
714 | if (field == V4L2_FIELD_ANY) { | |
543323bc | 715 | field = V4L2_FIELD_INTERLACED; |
1e6dd65e | 716 | } else if (V4L2_FIELD_INTERLACED != field) { |
6c2f9901 | 717 | dprintk(dev, 1, "Field type invalid.\n"); |
1e6dd65e MCC |
718 | return -EINVAL; |
719 | } | |
720 | ||
721 | maxw = norm_maxw(); | |
722 | maxh = norm_maxh(); | |
723 | ||
724 | f->fmt.pix.field = field; | |
725 | if (f->fmt.pix.height < 32) | |
726 | f->fmt.pix.height = 32; | |
727 | if (f->fmt.pix.height > maxh) | |
728 | f->fmt.pix.height = maxh; | |
729 | if (f->fmt.pix.width < 48) | |
730 | f->fmt.pix.width = 48; | |
731 | if (f->fmt.pix.width > maxw) | |
732 | f->fmt.pix.width = maxw; | |
733 | f->fmt.pix.width &= ~0x03; | |
734 | f->fmt.pix.bytesperline = | |
735 | (f->fmt.pix.width * fmt->depth) >> 3; | |
736 | f->fmt.pix.sizeimage = | |
737 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
738 | ||
739 | return 0; | |
740 | } | |
741 | ||
c820cc45 | 742 | /*FIXME: This seems to be generic enough to be at videodev2 */ |
78b526a4 | 743 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 | 744 | struct v4l2_format *f) |
1e6dd65e | 745 | { |
543323bc | 746 | struct vivi_fh *fh = priv; |
78718e5d | 747 | struct videobuf_queue *q = &fh->vb_vidq; |
74d7c5af | 748 | unsigned char r, g, b; |
d891f475 | 749 | int k, is_yuv; |
78718e5d | 750 | |
78b526a4 | 751 | int ret = vidioc_try_fmt_vid_cap(file, fh, f); |
c820cc45 MCC |
752 | if (ret < 0) |
753 | return (ret); | |
754 | ||
78718e5d BP |
755 | mutex_lock(&q->vb_lock); |
756 | ||
757 | if (videobuf_queue_is_busy(&fh->vb_vidq)) { | |
7e28adb2 | 758 | dprintk(fh->dev, 1, "%s queue busy\n", __func__); |
78718e5d BP |
759 | ret = -EBUSY; |
760 | goto out; | |
761 | } | |
762 | ||
d891f475 | 763 | fh->fmt = get_format(f); |
c820cc45 MCC |
764 | fh->width = f->fmt.pix.width; |
765 | fh->height = f->fmt.pix.height; | |
766 | fh->vb_vidq.field = f->fmt.pix.field; | |
767 | fh->type = f->type; | |
768 | ||
74d7c5af MD |
769 | /* precalculate color bar values to speed up rendering */ |
770 | for (k = 0; k < 8; k++) { | |
771 | r = bars[k][0]; | |
772 | g = bars[k][1]; | |
773 | b = bars[k][2]; | |
d891f475 | 774 | is_yuv = 0; |
74d7c5af | 775 | |
d891f475 MD |
776 | switch (fh->fmt->fourcc) { |
777 | case V4L2_PIX_FMT_YUYV: | |
fca36bab | 778 | case V4L2_PIX_FMT_UYVY: |
d891f475 MD |
779 | is_yuv = 1; |
780 | break; | |
781 | } | |
782 | ||
783 | if (is_yuv) { | |
784 | fh->bars[k][0] = TO_Y(r, g, b); /* Luma */ | |
785 | fh->bars[k][1] = TO_U(r, g, b); /* Cb */ | |
786 | fh->bars[k][2] = TO_V(r, g, b); /* Cr */ | |
787 | } else { | |
788 | fh->bars[k][0] = r; | |
789 | fh->bars[k][1] = g; | |
790 | fh->bars[k][2] = b; | |
791 | } | |
74d7c5af MD |
792 | } |
793 | ||
78718e5d BP |
794 | ret = 0; |
795 | out: | |
796 | mutex_unlock(&q->vb_lock); | |
797 | ||
798 | return (ret); | |
1e6dd65e MCC |
799 | } |
800 | ||
543323bc MCC |
801 | static int vidioc_reqbufs(struct file *file, void *priv, |
802 | struct v4l2_requestbuffers *p) | |
1e6dd65e | 803 | { |
543323bc | 804 | struct vivi_fh *fh = priv; |
1e6dd65e | 805 | |
c820cc45 | 806 | return (videobuf_reqbufs(&fh->vb_vidq, p)); |
1e6dd65e MCC |
807 | } |
808 | ||
543323bc | 809 | static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p) |
1e6dd65e | 810 | { |
543323bc | 811 | struct vivi_fh *fh = priv; |
1e6dd65e | 812 | |
c820cc45 MCC |
813 | return (videobuf_querybuf(&fh->vb_vidq, p)); |
814 | } | |
1e6dd65e | 815 | |
543323bc | 816 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
c820cc45 | 817 | { |
543323bc | 818 | struct vivi_fh *fh = priv; |
1e6dd65e | 819 | |
c820cc45 MCC |
820 | return (videobuf_qbuf(&fh->vb_vidq, p)); |
821 | } | |
1e6dd65e | 822 | |
543323bc | 823 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
c820cc45 | 824 | { |
543323bc | 825 | struct vivi_fh *fh = priv; |
1e6dd65e | 826 | |
c820cc45 MCC |
827 | return (videobuf_dqbuf(&fh->vb_vidq, p, |
828 | file->f_flags & O_NONBLOCK)); | |
829 | } | |
1e6dd65e | 830 | |
0dfa9abd | 831 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
543323bc | 832 | static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf) |
c820cc45 | 833 | { |
543323bc | 834 | struct vivi_fh *fh = priv; |
4ceb04e1 | 835 | |
543323bc | 836 | return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8); |
c820cc45 MCC |
837 | } |
838 | #endif | |
1e6dd65e | 839 | |
dc46ace1 | 840 | static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) |
c820cc45 | 841 | { |
543323bc | 842 | struct vivi_fh *fh = priv; |
1e6dd65e | 843 | |
c820cc45 MCC |
844 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
845 | return -EINVAL; | |
846 | if (i != fh->type) | |
847 | return -EINVAL; | |
1e6dd65e | 848 | |
ba32bd95 | 849 | return videobuf_streamon(&fh->vb_vidq); |
c820cc45 | 850 | } |
1e6dd65e | 851 | |
dc46ace1 | 852 | static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) |
c820cc45 | 853 | { |
543323bc | 854 | struct vivi_fh *fh = priv; |
1e6dd65e | 855 | |
c820cc45 MCC |
856 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
857 | return -EINVAL; | |
858 | if (i != fh->type) | |
859 | return -EINVAL; | |
1e6dd65e | 860 | |
ba32bd95 | 861 | return videobuf_streamoff(&fh->vb_vidq); |
c820cc45 MCC |
862 | } |
863 | ||
543323bc | 864 | static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *i) |
c820cc45 | 865 | { |
c820cc45 MCC |
866 | return 0; |
867 | } | |
1e6dd65e | 868 | |
c820cc45 | 869 | /* only one input in this sample driver */ |
543323bc | 870 | static int vidioc_enum_input(struct file *file, void *priv, |
c820cc45 MCC |
871 | struct v4l2_input *inp) |
872 | { | |
873 | if (inp->index != 0) | |
874 | return -EINVAL; | |
1e6dd65e | 875 | |
c820cc45 | 876 | inp->type = V4L2_INPUT_TYPE_CAMERA; |
784c668b | 877 | inp->std = V4L2_STD_525_60; |
543323bc | 878 | strcpy(inp->name, "Camera"); |
1e6dd65e | 879 | |
c820cc45 MCC |
880 | return (0); |
881 | } | |
1e6dd65e | 882 | |
543323bc | 883 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) |
c820cc45 MCC |
884 | { |
885 | *i = 0; | |
1e6dd65e | 886 | |
c820cc45 MCC |
887 | return (0); |
888 | } | |
543323bc | 889 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) |
c820cc45 MCC |
890 | { |
891 | if (i > 0) | |
892 | return -EINVAL; | |
1e6dd65e | 893 | |
c820cc45 MCC |
894 | return (0); |
895 | } | |
1e6dd65e MCC |
896 | |
897 | /* --- controls ---------------------------------------------- */ | |
543323bc MCC |
898 | static int vidioc_queryctrl(struct file *file, void *priv, |
899 | struct v4l2_queryctrl *qc) | |
c820cc45 MCC |
900 | { |
901 | int i; | |
1e6dd65e | 902 | |
c820cc45 MCC |
903 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
904 | if (qc->id && qc->id == vivi_qctrl[i].id) { | |
905 | memcpy(qc, &(vivi_qctrl[i]), | |
906 | sizeof(*qc)); | |
907 | return (0); | |
908 | } | |
1e6dd65e | 909 | |
c820cc45 MCC |
910 | return -EINVAL; |
911 | } | |
1e6dd65e | 912 | |
543323bc MCC |
913 | static int vidioc_g_ctrl(struct file *file, void *priv, |
914 | struct v4l2_control *ctrl) | |
c820cc45 MCC |
915 | { |
916 | int i; | |
1e6dd65e | 917 | |
c820cc45 MCC |
918 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
919 | if (ctrl->id == vivi_qctrl[i].id) { | |
543323bc | 920 | ctrl->value = qctl_regs[i]; |
c820cc45 MCC |
921 | return (0); |
922 | } | |
1e6dd65e | 923 | |
c820cc45 | 924 | return -EINVAL; |
1e6dd65e | 925 | } |
543323bc | 926 | static int vidioc_s_ctrl(struct file *file, void *priv, |
c820cc45 | 927 | struct v4l2_control *ctrl) |
1e6dd65e | 928 | { |
c820cc45 MCC |
929 | int i; |
930 | ||
931 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
932 | if (ctrl->id == vivi_qctrl[i].id) { | |
543323bc MCC |
933 | if (ctrl->value < vivi_qctrl[i].minimum |
934 | || ctrl->value > vivi_qctrl[i].maximum) { | |
c820cc45 MCC |
935 | return (-ERANGE); |
936 | } | |
543323bc | 937 | qctl_regs[i] = ctrl->value; |
c820cc45 MCC |
938 | return (0); |
939 | } | |
940 | return -EINVAL; | |
1e6dd65e MCC |
941 | } |
942 | ||
943 | /* ------------------------------------------------------------------ | |
944 | File operations for the device | |
945 | ------------------------------------------------------------------*/ | |
946 | ||
1e6dd65e MCC |
947 | static int vivi_open(struct inode *inode, struct file *file) |
948 | { | |
949 | int minor = iminor(inode); | |
a991f44b | 950 | struct vivi_dev *dev; |
63b79cfa | 951 | struct vivi_fh *fh = NULL; |
1e6dd65e | 952 | int i; |
aa9dbac4 | 953 | int retval = 0; |
1e6dd65e | 954 | |
543323bc | 955 | printk(KERN_DEBUG "vivi: open called (minor=%d)\n", minor); |
1e6dd65e | 956 | |
d56dc612 | 957 | lock_kernel(); |
a991f44b | 958 | list_for_each_entry(dev, &vivi_devlist, vivi_devlist) |
f905c442 | 959 | if (dev->vfd->minor == minor) |
a991f44b | 960 | goto found; |
d56dc612 | 961 | unlock_kernel(); |
a991f44b | 962 | return -ENODEV; |
c820cc45 | 963 | |
543323bc | 964 | found: |
aa9dbac4 | 965 | mutex_lock(&dev->mutex); |
1e6dd65e MCC |
966 | dev->users++; |
967 | ||
aa9dbac4 BP |
968 | if (dev->users > 1) { |
969 | dev->users--; | |
970 | retval = -EBUSY; | |
971 | goto unlock; | |
972 | } | |
973 | ||
6c2f9901 | 974 | dprintk(dev, 1, "open minor=%d type=%s users=%d\n", minor, |
a991f44b | 975 | v4l2_type_names[V4L2_BUF_TYPE_VIDEO_CAPTURE], dev->users); |
1e6dd65e MCC |
976 | |
977 | /* allocate + initialize per filehandle data */ | |
543323bc | 978 | fh = kzalloc(sizeof(*fh), GFP_KERNEL); |
1e6dd65e MCC |
979 | if (NULL == fh) { |
980 | dev->users--; | |
aa9dbac4 BP |
981 | retval = -ENOMEM; |
982 | goto unlock; | |
1e6dd65e | 983 | } |
aa9dbac4 BP |
984 | unlock: |
985 | mutex_unlock(&dev->mutex); | |
d56dc612 HV |
986 | if (retval) { |
987 | unlock_kernel(); | |
aa9dbac4 | 988 | return retval; |
d56dc612 | 989 | } |
1e6dd65e MCC |
990 | |
991 | file->private_data = fh; | |
992 | fh->dev = dev; | |
c820cc45 | 993 | |
1e6dd65e | 994 | fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
d891f475 | 995 | fh->fmt = &formats[0]; |
1e6dd65e MCC |
996 | fh->width = 640; |
997 | fh->height = 480; | |
998 | ||
999 | /* Put all controls at a sane state */ | |
1000 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
543323bc | 1001 | qctl_regs[i] = vivi_qctrl[i].default_value; |
1e6dd65e MCC |
1002 | |
1003 | /* Resets frame counters */ | |
543323bc MCC |
1004 | dev->h = 0; |
1005 | dev->m = 0; | |
1006 | dev->s = 0; | |
dfd8c04e | 1007 | dev->ms = 0; |
543323bc MCC |
1008 | dev->mv_count = 0; |
1009 | dev->jiffies = jiffies; | |
1010 | sprintf(dev->timestr, "%02d:%02d:%02d:%03d", | |
dfd8c04e | 1011 | dev->h, dev->m, dev->s, dev->ms); |
1e6dd65e | 1012 | |
5a037706 | 1013 | videobuf_queue_vmalloc_init(&fh->vb_vidq, &vivi_video_qops, |
55862ac9 | 1014 | NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED, |
543323bc | 1015 | sizeof(struct vivi_buffer), fh); |
1e6dd65e | 1016 | |
78718e5d | 1017 | vivi_start_thread(fh); |
d56dc612 | 1018 | unlock_kernel(); |
78718e5d | 1019 | |
1e6dd65e MCC |
1020 | return 0; |
1021 | } | |
1022 | ||
1023 | static ssize_t | |
1024 | vivi_read(struct file *file, char __user *data, size_t count, loff_t *ppos) | |
1025 | { | |
543323bc | 1026 | struct vivi_fh *fh = file->private_data; |
1e6dd65e | 1027 | |
543323bc | 1028 | if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
acb09af4 | 1029 | return videobuf_read_stream(&fh->vb_vidq, data, count, ppos, 0, |
1e6dd65e MCC |
1030 | file->f_flags & O_NONBLOCK); |
1031 | } | |
1032 | return 0; | |
1033 | } | |
1034 | ||
1035 | static unsigned int | |
1036 | vivi_poll(struct file *file, struct poll_table_struct *wait) | |
1037 | { | |
c820cc45 | 1038 | struct vivi_fh *fh = file->private_data; |
6c2f9901 | 1039 | struct vivi_dev *dev = fh->dev; |
85c7c70b | 1040 | struct videobuf_queue *q = &fh->vb_vidq; |
1e6dd65e | 1041 | |
7e28adb2 | 1042 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e MCC |
1043 | |
1044 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) | |
1045 | return POLLERR; | |
1046 | ||
85c7c70b | 1047 | return videobuf_poll_stream(file, q, wait); |
1e6dd65e MCC |
1048 | } |
1049 | ||
f905c442 | 1050 | static int vivi_close(struct inode *inode, struct file *file) |
1e6dd65e | 1051 | { |
c820cc45 MCC |
1052 | struct vivi_fh *fh = file->private_data; |
1053 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
1054 | struct vivi_dmaqueue *vidq = &dev->vidq; |
1055 | ||
1056 | int minor = iminor(inode); | |
1057 | ||
1058 | vivi_stop_thread(vidq); | |
053fcb60 | 1059 | videobuf_stop(&fh->vb_vidq); |
1e6dd65e MCC |
1060 | videobuf_mmap_free(&fh->vb_vidq); |
1061 | ||
55712ff7 | 1062 | kfree(fh); |
1e6dd65e | 1063 | |
aa9dbac4 | 1064 | mutex_lock(&dev->mutex); |
1e6dd65e | 1065 | dev->users--; |
aa9dbac4 | 1066 | mutex_unlock(&dev->mutex); |
1e6dd65e | 1067 | |
6c2f9901 MCC |
1068 | dprintk(dev, 1, "close called (minor=%d, users=%d)\n", |
1069 | minor, dev->users); | |
1e6dd65e MCC |
1070 | |
1071 | return 0; | |
1072 | } | |
1073 | ||
55712ff7 | 1074 | static int vivi_release(void) |
f905c442 | 1075 | { |
55712ff7 MCC |
1076 | struct vivi_dev *dev; |
1077 | struct list_head *list; | |
1078 | ||
1079 | while (!list_empty(&vivi_devlist)) { | |
1080 | list = vivi_devlist.next; | |
1081 | list_del(list); | |
1082 | dev = list_entry(list, struct vivi_dev, vivi_devlist); | |
f905c442 | 1083 | |
745271ae | 1084 | if (-1 != dev->vfd->minor) { |
8da9bae3 | 1085 | printk(KERN_INFO "%s: unregistering /dev/video%d\n", |
584ce48d | 1086 | VIVI_MODULE_NAME, dev->vfd->minor); |
8da9bae3 | 1087 | video_unregister_device(dev->vfd); |
745271ae | 1088 | } else { |
8da9bae3 | 1089 | printk(KERN_INFO "%s: releasing /dev/video%d\n", |
584ce48d | 1090 | VIVI_MODULE_NAME, dev->vfd->minor); |
8da9bae3 | 1091 | video_device_release(dev->vfd); |
745271ae | 1092 | } |
55712ff7 MCC |
1093 | |
1094 | kfree(dev); | |
1095 | } | |
f905c442 MCC |
1096 | |
1097 | return 0; | |
1098 | } | |
1099 | ||
543323bc | 1100 | static int vivi_mmap(struct file *file, struct vm_area_struct *vma) |
1e6dd65e | 1101 | { |
6c2f9901 MCC |
1102 | struct vivi_fh *fh = file->private_data; |
1103 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
1104 | int ret; |
1105 | ||
6c2f9901 | 1106 | dprintk(dev, 1, "mmap called, vma=0x%08lx\n", (unsigned long)vma); |
1e6dd65e | 1107 | |
543323bc | 1108 | ret = videobuf_mmap_mapper(&fh->vb_vidq, vma); |
1e6dd65e | 1109 | |
6c2f9901 | 1110 | dprintk(dev, 1, "vma start=0x%08lx, size=%ld, ret=%d\n", |
1e6dd65e MCC |
1111 | (unsigned long)vma->vm_start, |
1112 | (unsigned long)vma->vm_end-(unsigned long)vma->vm_start, | |
1113 | ret); | |
1114 | ||
1115 | return ret; | |
1116 | } | |
1117 | ||
fa027c2a | 1118 | static const struct file_operations vivi_fops = { |
1e6dd65e MCC |
1119 | .owner = THIS_MODULE, |
1120 | .open = vivi_open, | |
f905c442 | 1121 | .release = vivi_close, |
1e6dd65e MCC |
1122 | .read = vivi_read, |
1123 | .poll = vivi_poll, | |
c820cc45 | 1124 | .ioctl = video_ioctl2, /* V4L2 ioctl handler */ |
fbde31d5 | 1125 | .compat_ioctl = v4l_compat_ioctl32, |
5a037706 | 1126 | .mmap = vivi_mmap, |
1e6dd65e MCC |
1127 | .llseek = no_llseek, |
1128 | }; | |
1129 | ||
a399810c | 1130 | static const struct v4l2_ioctl_ops vivi_ioctl_ops = { |
c820cc45 | 1131 | .vidioc_querycap = vidioc_querycap, |
78b526a4 HV |
1132 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, |
1133 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
1134 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
1135 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
c820cc45 MCC |
1136 | .vidioc_reqbufs = vidioc_reqbufs, |
1137 | .vidioc_querybuf = vidioc_querybuf, | |
1138 | .vidioc_qbuf = vidioc_qbuf, | |
1139 | .vidioc_dqbuf = vidioc_dqbuf, | |
1140 | .vidioc_s_std = vidioc_s_std, | |
1141 | .vidioc_enum_input = vidioc_enum_input, | |
1142 | .vidioc_g_input = vidioc_g_input, | |
1143 | .vidioc_s_input = vidioc_s_input, | |
1144 | .vidioc_queryctrl = vidioc_queryctrl, | |
1145 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
1146 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
1147 | .vidioc_streamon = vidioc_streamon, | |
1148 | .vidioc_streamoff = vidioc_streamoff, | |
0dfa9abd | 1149 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
c820cc45 MCC |
1150 | .vidiocgmbuf = vidiocgmbuf, |
1151 | #endif | |
a399810c HV |
1152 | }; |
1153 | ||
1154 | static struct video_device vivi_template = { | |
1155 | .name = "vivi", | |
a399810c HV |
1156 | .fops = &vivi_fops, |
1157 | .ioctl_ops = &vivi_ioctl_ops, | |
1158 | .minor = -1, | |
1159 | .release = video_device_release, | |
1160 | ||
784c668b | 1161 | .tvnorms = V4L2_STD_525_60, |
e75f9cee | 1162 | .current_norm = V4L2_STD_NTSC_M, |
1e6dd65e | 1163 | }; |
c820cc45 | 1164 | /* ----------------------------------------------------------------- |
1e6dd65e MCC |
1165 | Initialization and module stuff |
1166 | ------------------------------------------------------------------*/ | |
1167 | ||
980d4f17 MCC |
1168 | /* This routine allocates from 1 to n_devs virtual drivers. |
1169 | ||
1170 | The real maximum number of virtual drivers will depend on how many drivers | |
1171 | will succeed. This is limited to the maximum number of devices that | |
1172 | videodev supports. Since there are 64 minors for video grabbers, this is | |
1173 | currently the theoretical maximum limit. However, a further limit does | |
1174 | exist at videodev that forbids any driver to register more than 32 video | |
1175 | grabbers. | |
1176 | */ | |
1e6dd65e MCC |
1177 | static int __init vivi_init(void) |
1178 | { | |
55712ff7 | 1179 | int ret = -ENOMEM, i; |
1e6dd65e | 1180 | struct vivi_dev *dev; |
f905c442 | 1181 | struct video_device *vfd; |
1e6dd65e | 1182 | |
980d4f17 MCC |
1183 | if (n_devs <= 0) |
1184 | n_devs = 1; | |
1185 | ||
55712ff7 MCC |
1186 | for (i = 0; i < n_devs; i++) { |
1187 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); | |
980d4f17 | 1188 | if (!dev) |
55712ff7 | 1189 | break; |
1e6dd65e | 1190 | |
55712ff7 MCC |
1191 | /* init video dma queues */ |
1192 | INIT_LIST_HEAD(&dev->vidq.active); | |
55712ff7 | 1193 | init_waitqueue_head(&dev->vidq.wq); |
1e6dd65e | 1194 | |
55712ff7 | 1195 | /* initialize locks */ |
55862ac9 | 1196 | spin_lock_init(&dev->slock); |
aa9dbac4 | 1197 | mutex_init(&dev->mutex); |
1e6dd65e | 1198 | |
55712ff7 | 1199 | vfd = video_device_alloc(); |
980d4f17 MCC |
1200 | if (!vfd) { |
1201 | kfree(dev); | |
55712ff7 | 1202 | break; |
980d4f17 | 1203 | } |
55712ff7 MCC |
1204 | |
1205 | *vfd = vivi_template; | |
1206 | ||
1207 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr); | |
980d4f17 MCC |
1208 | if (ret < 0) { |
1209 | video_device_release(vfd); | |
1210 | kfree(dev); | |
1211 | ||
1212 | /* If some registers succeeded, keep driver */ | |
1213 | if (i) | |
1214 | ret = 0; | |
1215 | ||
55712ff7 | 1216 | break; |
980d4f17 MCC |
1217 | } |
1218 | ||
1219 | /* Now that everything is fine, let's add it to device list */ | |
1220 | list_add_tail(&dev->vivi_devlist, &vivi_devlist); | |
55712ff7 MCC |
1221 | |
1222 | snprintf(vfd->name, sizeof(vfd->name), "%s (%i)", | |
1223 | vivi_template.name, vfd->minor); | |
f905c442 | 1224 | |
55712ff7 MCC |
1225 | if (video_nr >= 0) |
1226 | video_nr++; | |
f905c442 | 1227 | |
55712ff7 | 1228 | dev->vfd = vfd; |
745271ae | 1229 | printk(KERN_INFO "%s: V4L2 device registered as /dev/video%d\n", |
584ce48d | 1230 | VIVI_MODULE_NAME, vfd->minor); |
55712ff7 | 1231 | } |
f905c442 | 1232 | |
55712ff7 MCC |
1233 | if (ret < 0) { |
1234 | vivi_release(); | |
1235 | printk(KERN_INFO "Error %d while loading vivi driver\n", ret); | |
980d4f17 | 1236 | } else { |
55712ff7 | 1237 | printk(KERN_INFO "Video Technology Magazine Virtual Video " |
745271ae CK |
1238 | "Capture Board ver %u.%u.%u successfully loaded.\n", |
1239 | (VIVI_VERSION >> 16) & 0xFF, (VIVI_VERSION >> 8) & 0xFF, | |
1240 | VIVI_VERSION & 0xFF); | |
980d4f17 MCC |
1241 | |
1242 | /* n_devs will reflect the actual number of allocated devices */ | |
1243 | n_devs = i; | |
1244 | } | |
1245 | ||
1e6dd65e MCC |
1246 | return ret; |
1247 | } | |
1248 | ||
1249 | static void __exit vivi_exit(void) | |
1250 | { | |
55712ff7 | 1251 | vivi_release(); |
1e6dd65e MCC |
1252 | } |
1253 | ||
1254 | module_init(vivi_init); | |
1255 | module_exit(vivi_exit); | |
c820cc45 MCC |
1256 | |
1257 | MODULE_DESCRIPTION("Video Technology Magazine Virtual Video Capture Board"); | |
1258 | MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol"); | |
1259 | MODULE_LICENSE("Dual BSD/GPL"); | |
1260 | ||
980d4f17 | 1261 | module_param(video_nr, uint, 0444); |
55712ff7 | 1262 | MODULE_PARM_DESC(video_nr, "video iminor start number"); |
c820cc45 | 1263 | |
980d4f17 | 1264 | module_param(n_devs, uint, 0444); |
55712ff7 | 1265 | MODULE_PARM_DESC(n_devs, "number of video devices to create"); |
c820cc45 | 1266 | |
8996b3f3 | 1267 | module_param_named(debug, vivi_template.debug, int, 0444); |
55712ff7 | 1268 | MODULE_PARM_DESC(debug, "activates debug info"); |
c820cc45 | 1269 | |
55712ff7 MCC |
1270 | module_param(vid_limit, int, 0644); |
1271 | MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes"); |