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Commit | Line | Data |
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1e6dd65e MCC |
1 | /* |
2 | * Virtual Video driver - This code emulates a real video device with v4l2 api | |
3 | * | |
4 | * Copyright (c) 2006 by: | |
5 | * Mauro Carvalho Chehab <mchehab--a.t--infradead.org> | |
6 | * Ted Walther <ted--a.t--enumera.com> | |
7 | * John Sokol <sokol--a.t--videotechnology.com> | |
8 | * http://v4l.videotechnology.com/ | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the BSD Licence, GNU General Public License | |
12 | * as published by the Free Software Foundation; either version 2 of the | |
13 | * License, or (at your option) any later version | |
14 | */ | |
15 | #include <linux/module.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/errno.h> | |
18 | #include <linux/fs.h> | |
19 | #include <linux/kernel.h> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/mm.h> | |
22 | #include <linux/ioport.h> | |
23 | #include <linux/init.h> | |
24 | #include <linux/sched.h> | |
25 | #include <linux/pci.h> | |
26 | #include <linux/random.h> | |
27 | #include <linux/version.h> | |
51b54029 | 28 | #include <linux/mutex.h> |
1e6dd65e | 29 | #include <linux/videodev2.h> |
1095136d | 30 | #include <linux/dma-mapping.h> |
cd41e28e MCC |
31 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
32 | /* Include V4L1 specific functions. Should be removed soon */ | |
33 | #include <linux/videodev.h> | |
34 | #endif | |
f13df919 | 35 | #include <linux/interrupt.h> |
5a037706 | 36 | #include <media/videobuf-vmalloc.h> |
1e6dd65e MCC |
37 | #include <media/v4l2-common.h> |
38 | #include <linux/kthread.h> | |
39 | #include <linux/highmem.h> | |
7dfb7103 | 40 | #include <linux/freezer.h> |
1e6dd65e MCC |
41 | |
42 | /* Wake up at about 30 fps */ | |
43 | #define WAKE_NUMERATOR 30 | |
44 | #define WAKE_DENOMINATOR 1001 | |
45 | #define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */ | |
46 | ||
1e6dd65e MCC |
47 | #include "font.h" |
48 | ||
1e6dd65e MCC |
49 | #define VIVI_MAJOR_VERSION 0 |
50 | #define VIVI_MINOR_VERSION 4 | |
51 | #define VIVI_RELEASE 0 | |
543323bc MCC |
52 | #define VIVI_VERSION \ |
53 | KERNEL_VERSION(VIVI_MAJOR_VERSION, VIVI_MINOR_VERSION, VIVI_RELEASE) | |
1e6dd65e | 54 | |
c820cc45 MCC |
55 | /* Declare static vars that will be used as parameters */ |
56 | static unsigned int vid_limit = 16; /* Video memory limit, in Mb */ | |
c820cc45 | 57 | static int video_nr = -1; /* /dev/videoN, -1 for autodetect */ |
55712ff7 | 58 | static int n_devs = 1; /* Number of virtual devices */ |
1e6dd65e MCC |
59 | |
60 | /* supported controls */ | |
61 | static struct v4l2_queryctrl vivi_qctrl[] = { | |
62 | { | |
63 | .id = V4L2_CID_AUDIO_VOLUME, | |
64 | .name = "Volume", | |
65 | .minimum = 0, | |
66 | .maximum = 65535, | |
67 | .step = 65535/100, | |
68 | .default_value = 65535, | |
69 | .flags = 0, | |
70 | .type = V4L2_CTRL_TYPE_INTEGER, | |
543323bc | 71 | }, { |
1e6dd65e MCC |
72 | .id = V4L2_CID_BRIGHTNESS, |
73 | .type = V4L2_CTRL_TYPE_INTEGER, | |
74 | .name = "Brightness", | |
75 | .minimum = 0, | |
76 | .maximum = 255, | |
77 | .step = 1, | |
78 | .default_value = 127, | |
79 | .flags = 0, | |
80 | }, { | |
81 | .id = V4L2_CID_CONTRAST, | |
82 | .type = V4L2_CTRL_TYPE_INTEGER, | |
83 | .name = "Contrast", | |
84 | .minimum = 0, | |
85 | .maximum = 255, | |
86 | .step = 0x1, | |
87 | .default_value = 0x10, | |
88 | .flags = 0, | |
89 | }, { | |
90 | .id = V4L2_CID_SATURATION, | |
91 | .type = V4L2_CTRL_TYPE_INTEGER, | |
92 | .name = "Saturation", | |
93 | .minimum = 0, | |
94 | .maximum = 255, | |
95 | .step = 0x1, | |
96 | .default_value = 127, | |
97 | .flags = 0, | |
98 | }, { | |
99 | .id = V4L2_CID_HUE, | |
100 | .type = V4L2_CTRL_TYPE_INTEGER, | |
101 | .name = "Hue", | |
102 | .minimum = -128, | |
103 | .maximum = 127, | |
104 | .step = 0x1, | |
105 | .default_value = 0, | |
106 | .flags = 0, | |
107 | } | |
108 | }; | |
109 | ||
110 | static int qctl_regs[ARRAY_SIZE(vivi_qctrl)]; | |
111 | ||
6c2f9901 | 112 | #define dprintk(dev, level, fmt, arg...) \ |
c820cc45 | 113 | do { \ |
6c2f9901 | 114 | if (dev->vfd->debug >= (level)) \ |
c820cc45 | 115 | printk(KERN_DEBUG "vivi: " fmt , ## arg); \ |
1e6dd65e MCC |
116 | } while (0) |
117 | ||
118 | /* ------------------------------------------------------------------ | |
119 | Basic structures | |
120 | ------------------------------------------------------------------*/ | |
121 | ||
122 | struct vivi_fmt { | |
123 | char *name; | |
124 | u32 fourcc; /* v4l2 format id */ | |
125 | int depth; | |
126 | }; | |
127 | ||
128 | static struct vivi_fmt format = { | |
129 | .name = "4:2:2, packed, YUYV", | |
130 | .fourcc = V4L2_PIX_FMT_YUYV, | |
131 | .depth = 16, | |
132 | }; | |
133 | ||
134 | struct sg_to_addr { | |
135 | int pos; | |
136 | struct scatterlist *sg; | |
137 | }; | |
138 | ||
139 | /* buffer for one video frame */ | |
140 | struct vivi_buffer { | |
141 | /* common v4l buffer stuff -- must be first */ | |
142 | struct videobuf_buffer vb; | |
143 | ||
144 | struct vivi_fmt *fmt; | |
1e6dd65e MCC |
145 | }; |
146 | ||
147 | struct vivi_dmaqueue { | |
148 | struct list_head active; | |
1e6dd65e MCC |
149 | |
150 | /* thread for generating video stream*/ | |
151 | struct task_struct *kthread; | |
152 | wait_queue_head_t wq; | |
153 | /* Counters to control fps rate */ | |
154 | int frame; | |
155 | int ini_jiffies; | |
156 | }; | |
157 | ||
158 | static LIST_HEAD(vivi_devlist); | |
159 | ||
160 | struct vivi_dev { | |
161 | struct list_head vivi_devlist; | |
162 | ||
55862ac9 | 163 | spinlock_t slock; |
aa9dbac4 | 164 | struct mutex mutex; |
1e6dd65e MCC |
165 | |
166 | int users; | |
167 | ||
168 | /* various device info */ | |
f905c442 | 169 | struct video_device *vfd; |
1e6dd65e MCC |
170 | |
171 | struct vivi_dmaqueue vidq; | |
172 | ||
173 | /* Several counters */ | |
dfd8c04e MCC |
174 | int h, m, s, ms; |
175 | unsigned long jiffies; | |
1e6dd65e | 176 | char timestr[13]; |
025341d4 MCC |
177 | |
178 | int mv_count; /* Controls bars movement */ | |
1e6dd65e MCC |
179 | }; |
180 | ||
181 | struct vivi_fh { | |
182 | struct vivi_dev *dev; | |
183 | ||
184 | /* video capture */ | |
185 | struct vivi_fmt *fmt; | |
543323bc | 186 | unsigned int width, height; |
1e6dd65e MCC |
187 | struct videobuf_queue vb_vidq; |
188 | ||
189 | enum v4l2_buf_type type; | |
190 | }; | |
191 | ||
192 | /* ------------------------------------------------------------------ | |
193 | DMA and thread functions | |
194 | ------------------------------------------------------------------*/ | |
195 | ||
196 | /* Bars and Colors should match positions */ | |
197 | ||
198 | enum colors { | |
199 | WHITE, | |
200 | AMBAR, | |
201 | CYAN, | |
202 | GREEN, | |
203 | MAGENTA, | |
204 | RED, | |
543323bc MCC |
205 | BLUE, |
206 | BLACK, | |
1e6dd65e MCC |
207 | }; |
208 | ||
209 | static u8 bars[8][3] = { | |
210 | /* R G B */ | |
543323bc MCC |
211 | {204, 204, 204}, /* white */ |
212 | {208, 208, 0}, /* ambar */ | |
213 | { 0, 206, 206}, /* cyan */ | |
214 | { 0, 239, 0}, /* green */ | |
215 | {239, 0, 239}, /* magenta */ | |
216 | {205, 0, 0}, /* red */ | |
217 | { 0, 0, 255}, /* blue */ | |
218 | { 0, 0, 0}, /* black */ | |
1e6dd65e MCC |
219 | }; |
220 | ||
543323bc MCC |
221 | #define TO_Y(r, g, b) \ |
222 | (((16829 * r + 33039 * g + 6416 * b + 32768) >> 16) + 16) | |
1e6dd65e | 223 | /* RGB to V(Cr) Color transform */ |
543323bc MCC |
224 | #define TO_V(r, g, b) \ |
225 | (((28784 * r - 24103 * g - 4681 * b + 32768) >> 16) + 128) | |
1e6dd65e | 226 | /* RGB to U(Cb) Color transform */ |
543323bc MCC |
227 | #define TO_U(r, g, b) \ |
228 | (((-9714 * r - 19070 * g + 28784 * b + 32768) >> 16) + 128) | |
1e6dd65e MCC |
229 | |
230 | #define TSTAMP_MIN_Y 24 | |
231 | #define TSTAMP_MAX_Y TSTAMP_MIN_Y+15 | |
232 | #define TSTAMP_MIN_X 64 | |
233 | ||
543323bc MCC |
234 | static void gen_line(char *basep, int inipos, int wmax, |
235 | int hmax, int line, int count, char *timestr) | |
1e6dd65e | 236 | { |
543323bc MCC |
237 | int w, i, j, y; |
238 | int pos = inipos; | |
239 | char *p, *s; | |
240 | u8 chr, r, g, b, color; | |
1e6dd65e MCC |
241 | |
242 | /* We will just duplicate the second pixel at the packet */ | |
543323bc | 243 | wmax /= 2; |
1e6dd65e MCC |
244 | |
245 | /* Generate a standard color bar pattern */ | |
543323bc MCC |
246 | for (w = 0; w < wmax; w++) { |
247 | int colorpos = ((w + count) * 8/(wmax + 1)) % 8; | |
248 | r = bars[colorpos][0]; | |
249 | g = bars[colorpos][1]; | |
250 | b = bars[colorpos][2]; | |
1e6dd65e | 251 | |
543323bc MCC |
252 | for (color = 0; color < 4; color++) { |
253 | p = basep + pos; | |
1e6dd65e MCC |
254 | |
255 | switch (color) { | |
543323bc MCC |
256 | case 0: |
257 | case 2: | |
258 | *p = TO_Y(r, g, b); /* Luma */ | |
259 | break; | |
260 | case 1: | |
261 | *p = TO_U(r, g, b); /* Cb */ | |
262 | break; | |
263 | case 3: | |
264 | *p = TO_V(r, g, b); /* Cr */ | |
265 | break; | |
1e6dd65e MCC |
266 | } |
267 | pos++; | |
268 | } | |
269 | } | |
270 | ||
271 | /* Checks if it is possible to show timestamp */ | |
543323bc | 272 | if (TSTAMP_MAX_Y >= hmax) |
1e6dd65e | 273 | goto end; |
543323bc | 274 | if (TSTAMP_MIN_X + strlen(timestr) >= wmax) |
1e6dd65e MCC |
275 | goto end; |
276 | ||
277 | /* Print stream time */ | |
543323bc MCC |
278 | if (line >= TSTAMP_MIN_Y && line <= TSTAMP_MAX_Y) { |
279 | j = TSTAMP_MIN_X; | |
280 | for (s = timestr; *s; s++) { | |
281 | chr = rom8x16_bits[(*s-0x30)*16+line-TSTAMP_MIN_Y]; | |
282 | for (i = 0; i < 7; i++) { | |
283 | if (chr & 1 << (7 - i)) { | |
284 | /* Font color*/ | |
285 | r = 0; | |
286 | g = 198; | |
287 | b = 0; | |
288 | } else { | |
289 | /* Background color */ | |
290 | r = bars[BLACK][0]; | |
291 | g = bars[BLACK][1]; | |
292 | b = bars[BLACK][2]; | |
1e6dd65e MCC |
293 | } |
294 | ||
543323bc MCC |
295 | pos = inipos + j * 2; |
296 | for (color = 0; color < 4; color++) { | |
297 | p = basep + pos; | |
1e6dd65e | 298 | |
543323bc | 299 | y = TO_Y(r, g, b); |
1e6dd65e MCC |
300 | |
301 | switch (color) { | |
543323bc MCC |
302 | case 0: |
303 | case 2: | |
304 | *p = TO_Y(r, g, b); /* Luma */ | |
305 | break; | |
306 | case 1: | |
307 | *p = TO_U(r, g, b); /* Cb */ | |
308 | break; | |
309 | case 3: | |
310 | *p = TO_V(r, g, b); /* Cr */ | |
311 | break; | |
1e6dd65e MCC |
312 | } |
313 | pos++; | |
314 | } | |
315 | j++; | |
316 | } | |
317 | } | |
318 | } | |
319 | ||
1e6dd65e | 320 | end: |
b50e7fe9 | 321 | return; |
1e6dd65e | 322 | } |
78718e5d | 323 | |
543323bc | 324 | static void vivi_fillbuff(struct vivi_dev *dev, struct vivi_buffer *buf) |
1e6dd65e | 325 | { |
543323bc | 326 | int h , pos = 0; |
1e6dd65e MCC |
327 | int hmax = buf->vb.height; |
328 | int wmax = buf->vb.width; | |
1e6dd65e | 329 | struct timeval ts; |
5c554e6b | 330 | char *tmpbuf; |
543323bc | 331 | void *vbuf = videobuf_to_vmalloc(&buf->vb); |
b50e7fe9 | 332 | |
5c554e6b | 333 | if (!vbuf) |
5a037706 | 334 | return; |
1e6dd65e | 335 | |
5c554e6b MS |
336 | tmpbuf = kmalloc(wmax * 2, GFP_ATOMIC); |
337 | if (!tmpbuf) | |
78718e5d BP |
338 | return; |
339 | ||
543323bc | 340 | for (h = 0; h < hmax; h++) { |
025341d4 | 341 | gen_line(tmpbuf, 0, wmax, hmax, h, dev->mv_count, |
3bef5e4a | 342 | dev->timestr); |
78718e5d | 343 | memcpy(vbuf + pos, tmpbuf, wmax * 2); |
1e6dd65e MCC |
344 | pos += wmax*2; |
345 | } | |
346 | ||
025341d4 | 347 | dev->mv_count++; |
3bef5e4a | 348 | |
5a037706 MCC |
349 | kfree(tmpbuf); |
350 | ||
1e6dd65e MCC |
351 | /* Updates stream time */ |
352 | ||
dfd8c04e | 353 | dev->ms += jiffies_to_msecs(jiffies-dev->jiffies); |
543323bc | 354 | dev->jiffies = jiffies; |
dfd8c04e MCC |
355 | if (dev->ms >= 1000) { |
356 | dev->ms -= 1000; | |
1e6dd65e | 357 | dev->s++; |
543323bc MCC |
358 | if (dev->s >= 60) { |
359 | dev->s -= 60; | |
1e6dd65e | 360 | dev->m++; |
543323bc MCC |
361 | if (dev->m > 60) { |
362 | dev->m -= 60; | |
1e6dd65e | 363 | dev->h++; |
543323bc MCC |
364 | if (dev->h > 24) |
365 | dev->h -= 24; | |
1e6dd65e MCC |
366 | } |
367 | } | |
368 | } | |
543323bc | 369 | sprintf(dev->timestr, "%02d:%02d:%02d:%03d", |
dfd8c04e | 370 | dev->h, dev->m, dev->s, dev->ms); |
1e6dd65e | 371 | |
6c2f9901 MCC |
372 | dprintk(dev, 2, "vivifill at %s: Buffer 0x%08lx size= %d\n", |
373 | dev->timestr, (unsigned long)tmpbuf, pos); | |
1e6dd65e MCC |
374 | |
375 | /* Advice that buffer was filled */ | |
1e6dd65e MCC |
376 | buf->vb.field_count++; |
377 | do_gettimeofday(&ts); | |
378 | buf->vb.ts = ts; | |
78718e5d | 379 | buf->vb.state = VIDEOBUF_DONE; |
1e6dd65e MCC |
380 | } |
381 | ||
78718e5d | 382 | static void vivi_thread_tick(struct vivi_fh *fh) |
1e6dd65e | 383 | { |
78718e5d BP |
384 | struct vivi_buffer *buf; |
385 | struct vivi_dev *dev = fh->dev; | |
386 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
1e6dd65e | 387 | |
78718e5d | 388 | unsigned long flags = 0; |
1e6dd65e | 389 | |
78718e5d | 390 | dprintk(dev, 1, "Thread tick\n"); |
1e6dd65e | 391 | |
78718e5d BP |
392 | spin_lock_irqsave(&dev->slock, flags); |
393 | if (list_empty(&dma_q->active)) { | |
394 | dprintk(dev, 1, "No active queue to serve\n"); | |
395 | goto unlock; | |
396 | } | |
1e6dd65e | 397 | |
78718e5d BP |
398 | buf = list_entry(dma_q->active.next, |
399 | struct vivi_buffer, vb.queue); | |
1e6dd65e | 400 | |
78718e5d BP |
401 | /* Nobody is waiting on this buffer, return */ |
402 | if (!waitqueue_active(&buf->vb.done)) | |
403 | goto unlock; | |
1e6dd65e | 404 | |
78718e5d | 405 | list_del(&buf->vb.queue); |
0b600512 | 406 | |
78718e5d BP |
407 | do_gettimeofday(&buf->vb.ts); |
408 | ||
409 | /* Fill buffer */ | |
410 | vivi_fillbuff(dev, buf); | |
411 | dprintk(dev, 1, "filled buffer %p\n", buf); | |
412 | ||
413 | wake_up(&buf->vb.done); | |
414 | dprintk(dev, 2, "[%p/%d] wakeup\n", buf, buf->vb. i); | |
415 | unlock: | |
416 | spin_unlock_irqrestore(&dev->slock, flags); | |
417 | return; | |
1e6dd65e MCC |
418 | } |
419 | ||
6594ad82 MCC |
420 | #define frames_to_ms(frames) \ |
421 | ((frames * WAKE_NUMERATOR * 1000) / WAKE_DENOMINATOR) | |
422 | ||
78718e5d | 423 | static void vivi_sleep(struct vivi_fh *fh) |
1e6dd65e | 424 | { |
78718e5d BP |
425 | struct vivi_dev *dev = fh->dev; |
426 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
427 | int timeout; | |
1e6dd65e MCC |
428 | DECLARE_WAITQUEUE(wait, current); |
429 | ||
7e28adb2 | 430 | dprintk(dev, 1, "%s dma_q=0x%08lx\n", __func__, |
6c2f9901 | 431 | (unsigned long)dma_q); |
1e6dd65e MCC |
432 | |
433 | add_wait_queue(&dma_q->wq, &wait); | |
6594ad82 MCC |
434 | if (kthread_should_stop()) |
435 | goto stop_task; | |
436 | ||
6594ad82 | 437 | /* Calculate time to wake up */ |
78718e5d | 438 | timeout = msecs_to_jiffies(frames_to_ms(1)); |
6594ad82 | 439 | |
78718e5d | 440 | vivi_thread_tick(fh); |
6594ad82 MCC |
441 | |
442 | schedule_timeout_interruptible(timeout); | |
1e6dd65e | 443 | |
6594ad82 | 444 | stop_task: |
1e6dd65e MCC |
445 | remove_wait_queue(&dma_q->wq, &wait); |
446 | try_to_freeze(); | |
447 | } | |
448 | ||
972c3517 | 449 | static int vivi_thread(void *data) |
1e6dd65e | 450 | { |
78718e5d BP |
451 | struct vivi_fh *fh = data; |
452 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e | 453 | |
6c2f9901 | 454 | dprintk(dev, 1, "thread started\n"); |
1e6dd65e | 455 | |
83144186 | 456 | set_freezable(); |
0b600512 | 457 | |
1e6dd65e | 458 | for (;;) { |
78718e5d | 459 | vivi_sleep(fh); |
1e6dd65e MCC |
460 | |
461 | if (kthread_should_stop()) | |
462 | break; | |
463 | } | |
6c2f9901 | 464 | dprintk(dev, 1, "thread: exit\n"); |
1e6dd65e MCC |
465 | return 0; |
466 | } | |
467 | ||
78718e5d | 468 | static int vivi_start_thread(struct vivi_fh *fh) |
1e6dd65e | 469 | { |
78718e5d BP |
470 | struct vivi_dev *dev = fh->dev; |
471 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
6c2f9901 | 472 | |
543323bc MCC |
473 | dma_q->frame = 0; |
474 | dma_q->ini_jiffies = jiffies; | |
1e6dd65e | 475 | |
7e28adb2 | 476 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e | 477 | |
78718e5d | 478 | dma_q->kthread = kthread_run(vivi_thread, fh, "vivi"); |
1e6dd65e | 479 | |
054afee4 | 480 | if (IS_ERR(dma_q->kthread)) { |
1e6dd65e | 481 | printk(KERN_ERR "vivi: kernel_thread() failed\n"); |
054afee4 | 482 | return PTR_ERR(dma_q->kthread); |
1e6dd65e | 483 | } |
0b600512 MCC |
484 | /* Wakes thread */ |
485 | wake_up_interruptible(&dma_q->wq); | |
486 | ||
7e28adb2 | 487 | dprintk(dev, 1, "returning from %s\n", __func__); |
1e6dd65e MCC |
488 | return 0; |
489 | } | |
490 | ||
972c3517 | 491 | static void vivi_stop_thread(struct vivi_dmaqueue *dma_q) |
1e6dd65e | 492 | { |
6c2f9901 MCC |
493 | struct vivi_dev *dev = container_of(dma_q, struct vivi_dev, vidq); |
494 | ||
7e28adb2 | 495 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e MCC |
496 | /* shutdown control thread */ |
497 | if (dma_q->kthread) { | |
498 | kthread_stop(dma_q->kthread); | |
543323bc | 499 | dma_q->kthread = NULL; |
1e6dd65e MCC |
500 | } |
501 | } | |
502 | ||
1e6dd65e MCC |
503 | /* ------------------------------------------------------------------ |
504 | Videobuf operations | |
505 | ------------------------------------------------------------------*/ | |
506 | static int | |
507 | buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) | |
508 | { | |
6c2f9901 MCC |
509 | struct vivi_fh *fh = vq->priv_data; |
510 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
511 | |
512 | *size = fh->width*fh->height*2; | |
513 | ||
514 | if (0 == *count) | |
515 | *count = 32; | |
6bb2790f | 516 | |
1e6dd65e MCC |
517 | while (*size * *count > vid_limit * 1024 * 1024) |
518 | (*count)--; | |
6bb2790f | 519 | |
7e28adb2 | 520 | dprintk(dev, 1, "%s, count=%d, size=%d\n", __func__, |
6c2f9901 | 521 | *count, *size); |
6bb2790f | 522 | |
1e6dd65e MCC |
523 | return 0; |
524 | } | |
525 | ||
972c3517 | 526 | static void free_buffer(struct videobuf_queue *vq, struct vivi_buffer *buf) |
1e6dd65e | 527 | { |
6c2f9901 MCC |
528 | struct vivi_fh *fh = vq->priv_data; |
529 | struct vivi_dev *dev = fh->dev; | |
530 | ||
7e28adb2 | 531 | dprintk(dev, 1, "%s, state: %i\n", __func__, buf->vb.state); |
1e6dd65e MCC |
532 | |
533 | if (in_interrupt()) | |
534 | BUG(); | |
535 | ||
5a037706 | 536 | videobuf_vmalloc_free(&buf->vb); |
fbde31d5 | 537 | dprintk(dev, 1, "free_buffer: freed\n"); |
0fc0686e | 538 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
1e6dd65e MCC |
539 | } |
540 | ||
541 | #define norm_maxw() 1024 | |
542 | #define norm_maxh() 768 | |
543 | static int | |
544 | buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, | |
545 | enum v4l2_field field) | |
546 | { | |
547 | struct vivi_fh *fh = vq->priv_data; | |
6c2f9901 | 548 | struct vivi_dev *dev = fh->dev; |
543323bc | 549 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
78718e5d | 550 | int rc; |
1e6dd65e | 551 | |
7e28adb2 | 552 | dprintk(dev, 1, "%s, field=%d\n", __func__, field); |
1e6dd65e MCC |
553 | |
554 | BUG_ON(NULL == fh->fmt); | |
78718e5d | 555 | |
1e6dd65e MCC |
556 | if (fh->width < 48 || fh->width > norm_maxw() || |
557 | fh->height < 32 || fh->height > norm_maxh()) | |
558 | return -EINVAL; | |
78718e5d | 559 | |
1e6dd65e MCC |
560 | buf->vb.size = fh->width*fh->height*2; |
561 | if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) | |
562 | return -EINVAL; | |
563 | ||
78718e5d BP |
564 | /* These properties only change when queue is idle, see s_fmt */ |
565 | buf->fmt = fh->fmt; | |
566 | buf->vb.width = fh->width; | |
567 | buf->vb.height = fh->height; | |
568 | buf->vb.field = field; | |
1e6dd65e | 569 | |
0fc0686e | 570 | if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { |
543323bc MCC |
571 | rc = videobuf_iolock(vq, &buf->vb, NULL); |
572 | if (rc < 0) | |
1e6dd65e MCC |
573 | goto fail; |
574 | } | |
575 | ||
0fc0686e | 576 | buf->vb.state = VIDEOBUF_PREPARED; |
1e6dd65e | 577 | |
1e6dd65e MCC |
578 | return 0; |
579 | ||
580 | fail: | |
543323bc | 581 | free_buffer(vq, buf); |
1e6dd65e MCC |
582 | return rc; |
583 | } | |
584 | ||
585 | static void | |
586 | buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) | |
587 | { | |
543323bc MCC |
588 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
589 | struct vivi_fh *fh = vq->priv_data; | |
590 | struct vivi_dev *dev = fh->dev; | |
78718e5d BP |
591 | struct vivi_dmaqueue *vidq = &dev->vidq; |
592 | ||
7e28adb2 | 593 | dprintk(dev, 1, "%s\n", __func__); |
78718e5d BP |
594 | |
595 | buf->vb.state = VIDEOBUF_QUEUED; | |
596 | list_add_tail(&buf->vb.queue, &vidq->active); | |
1e6dd65e MCC |
597 | } |
598 | ||
543323bc MCC |
599 | static void buffer_release(struct videobuf_queue *vq, |
600 | struct videobuf_buffer *vb) | |
1e6dd65e | 601 | { |
543323bc | 602 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
1e6dd65e | 603 | struct vivi_fh *fh = vq->priv_data; |
543323bc | 604 | struct vivi_dev *dev = (struct vivi_dev *)fh->dev; |
1e6dd65e | 605 | |
7e28adb2 | 606 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e | 607 | |
543323bc | 608 | free_buffer(vq, buf); |
1e6dd65e MCC |
609 | } |
610 | ||
1e6dd65e MCC |
611 | static struct videobuf_queue_ops vivi_video_qops = { |
612 | .buf_setup = buffer_setup, | |
613 | .buf_prepare = buffer_prepare, | |
614 | .buf_queue = buffer_queue, | |
615 | .buf_release = buffer_release, | |
1e6dd65e MCC |
616 | }; |
617 | ||
c820cc45 MCC |
618 | /* ------------------------------------------------------------------ |
619 | IOCTL vidioc handling | |
620 | ------------------------------------------------------------------*/ | |
543323bc | 621 | static int vidioc_querycap(struct file *file, void *priv, |
c820cc45 MCC |
622 | struct v4l2_capability *cap) |
623 | { | |
624 | strcpy(cap->driver, "vivi"); | |
625 | strcpy(cap->card, "vivi"); | |
626 | cap->version = VIVI_VERSION; | |
627 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | | |
628 | V4L2_CAP_STREAMING | | |
629 | V4L2_CAP_READWRITE; | |
630 | return 0; | |
631 | } | |
632 | ||
78b526a4 | 633 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 MCC |
634 | struct v4l2_fmtdesc *f) |
635 | { | |
636 | if (f->index > 0) | |
637 | return -EINVAL; | |
638 | ||
543323bc | 639 | strlcpy(f->description, format.name, sizeof(f->description)); |
c820cc45 MCC |
640 | f->pixelformat = format.fourcc; |
641 | return 0; | |
642 | } | |
643 | ||
78b526a4 | 644 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 MCC |
645 | struct v4l2_format *f) |
646 | { | |
543323bc | 647 | struct vivi_fh *fh = priv; |
c820cc45 MCC |
648 | |
649 | f->fmt.pix.width = fh->width; | |
650 | f->fmt.pix.height = fh->height; | |
651 | f->fmt.pix.field = fh->vb_vidq.field; | |
652 | f->fmt.pix.pixelformat = fh->fmt->fourcc; | |
653 | f->fmt.pix.bytesperline = | |
654 | (f->fmt.pix.width * fh->fmt->depth) >> 3; | |
655 | f->fmt.pix.sizeimage = | |
656 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
657 | ||
658 | return (0); | |
659 | } | |
660 | ||
78b526a4 | 661 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, |
1e6dd65e MCC |
662 | struct v4l2_format *f) |
663 | { | |
6c2f9901 MCC |
664 | struct vivi_fh *fh = priv; |
665 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
666 | struct vivi_fmt *fmt; |
667 | enum v4l2_field field; | |
668 | unsigned int maxw, maxh; | |
669 | ||
670 | if (format.fourcc != f->fmt.pix.pixelformat) { | |
6c2f9901 MCC |
671 | dprintk(dev, 1, "Fourcc format (0x%08x) invalid. " |
672 | "Driver accepts only 0x%08x\n", | |
673 | f->fmt.pix.pixelformat, format.fourcc); | |
1e6dd65e MCC |
674 | return -EINVAL; |
675 | } | |
543323bc | 676 | fmt = &format; |
1e6dd65e MCC |
677 | |
678 | field = f->fmt.pix.field; | |
679 | ||
680 | if (field == V4L2_FIELD_ANY) { | |
543323bc | 681 | field = V4L2_FIELD_INTERLACED; |
1e6dd65e | 682 | } else if (V4L2_FIELD_INTERLACED != field) { |
6c2f9901 | 683 | dprintk(dev, 1, "Field type invalid.\n"); |
1e6dd65e MCC |
684 | return -EINVAL; |
685 | } | |
686 | ||
687 | maxw = norm_maxw(); | |
688 | maxh = norm_maxh(); | |
689 | ||
690 | f->fmt.pix.field = field; | |
691 | if (f->fmt.pix.height < 32) | |
692 | f->fmt.pix.height = 32; | |
693 | if (f->fmt.pix.height > maxh) | |
694 | f->fmt.pix.height = maxh; | |
695 | if (f->fmt.pix.width < 48) | |
696 | f->fmt.pix.width = 48; | |
697 | if (f->fmt.pix.width > maxw) | |
698 | f->fmt.pix.width = maxw; | |
699 | f->fmt.pix.width &= ~0x03; | |
700 | f->fmt.pix.bytesperline = | |
701 | (f->fmt.pix.width * fmt->depth) >> 3; | |
702 | f->fmt.pix.sizeimage = | |
703 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
704 | ||
705 | return 0; | |
706 | } | |
707 | ||
c820cc45 | 708 | /*FIXME: This seems to be generic enough to be at videodev2 */ |
78b526a4 | 709 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 | 710 | struct v4l2_format *f) |
1e6dd65e | 711 | { |
543323bc | 712 | struct vivi_fh *fh = priv; |
78718e5d BP |
713 | struct videobuf_queue *q = &fh->vb_vidq; |
714 | ||
78b526a4 | 715 | int ret = vidioc_try_fmt_vid_cap(file, fh, f); |
c820cc45 MCC |
716 | if (ret < 0) |
717 | return (ret); | |
718 | ||
78718e5d BP |
719 | mutex_lock(&q->vb_lock); |
720 | ||
721 | if (videobuf_queue_is_busy(&fh->vb_vidq)) { | |
7e28adb2 | 722 | dprintk(fh->dev, 1, "%s queue busy\n", __func__); |
78718e5d BP |
723 | ret = -EBUSY; |
724 | goto out; | |
725 | } | |
726 | ||
c820cc45 MCC |
727 | fh->fmt = &format; |
728 | fh->width = f->fmt.pix.width; | |
729 | fh->height = f->fmt.pix.height; | |
730 | fh->vb_vidq.field = f->fmt.pix.field; | |
731 | fh->type = f->type; | |
732 | ||
78718e5d BP |
733 | ret = 0; |
734 | out: | |
735 | mutex_unlock(&q->vb_lock); | |
736 | ||
737 | return (ret); | |
1e6dd65e MCC |
738 | } |
739 | ||
543323bc MCC |
740 | static int vidioc_reqbufs(struct file *file, void *priv, |
741 | struct v4l2_requestbuffers *p) | |
1e6dd65e | 742 | { |
543323bc | 743 | struct vivi_fh *fh = priv; |
1e6dd65e | 744 | |
c820cc45 | 745 | return (videobuf_reqbufs(&fh->vb_vidq, p)); |
1e6dd65e MCC |
746 | } |
747 | ||
543323bc | 748 | static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p) |
1e6dd65e | 749 | { |
543323bc | 750 | struct vivi_fh *fh = priv; |
1e6dd65e | 751 | |
c820cc45 MCC |
752 | return (videobuf_querybuf(&fh->vb_vidq, p)); |
753 | } | |
1e6dd65e | 754 | |
543323bc | 755 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
c820cc45 | 756 | { |
543323bc | 757 | struct vivi_fh *fh = priv; |
1e6dd65e | 758 | |
c820cc45 MCC |
759 | return (videobuf_qbuf(&fh->vb_vidq, p)); |
760 | } | |
1e6dd65e | 761 | |
543323bc | 762 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
c820cc45 | 763 | { |
543323bc | 764 | struct vivi_fh *fh = priv; |
1e6dd65e | 765 | |
c820cc45 MCC |
766 | return (videobuf_dqbuf(&fh->vb_vidq, p, |
767 | file->f_flags & O_NONBLOCK)); | |
768 | } | |
1e6dd65e | 769 | |
0dfa9abd | 770 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
543323bc | 771 | static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf) |
c820cc45 | 772 | { |
543323bc | 773 | struct vivi_fh *fh = priv; |
4ceb04e1 | 774 | |
543323bc | 775 | return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8); |
c820cc45 MCC |
776 | } |
777 | #endif | |
1e6dd65e | 778 | |
dc46ace1 | 779 | static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) |
c820cc45 | 780 | { |
543323bc | 781 | struct vivi_fh *fh = priv; |
1e6dd65e | 782 | |
c820cc45 MCC |
783 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
784 | return -EINVAL; | |
785 | if (i != fh->type) | |
786 | return -EINVAL; | |
1e6dd65e | 787 | |
ba32bd95 | 788 | return videobuf_streamon(&fh->vb_vidq); |
c820cc45 | 789 | } |
1e6dd65e | 790 | |
dc46ace1 | 791 | static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) |
c820cc45 | 792 | { |
543323bc | 793 | struct vivi_fh *fh = priv; |
1e6dd65e | 794 | |
c820cc45 MCC |
795 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
796 | return -EINVAL; | |
797 | if (i != fh->type) | |
798 | return -EINVAL; | |
1e6dd65e | 799 | |
ba32bd95 | 800 | return videobuf_streamoff(&fh->vb_vidq); |
c820cc45 MCC |
801 | } |
802 | ||
543323bc | 803 | static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *i) |
c820cc45 | 804 | { |
c820cc45 MCC |
805 | return 0; |
806 | } | |
1e6dd65e | 807 | |
c820cc45 | 808 | /* only one input in this sample driver */ |
543323bc | 809 | static int vidioc_enum_input(struct file *file, void *priv, |
c820cc45 MCC |
810 | struct v4l2_input *inp) |
811 | { | |
812 | if (inp->index != 0) | |
813 | return -EINVAL; | |
1e6dd65e | 814 | |
c820cc45 | 815 | inp->type = V4L2_INPUT_TYPE_CAMERA; |
784c668b | 816 | inp->std = V4L2_STD_525_60; |
543323bc | 817 | strcpy(inp->name, "Camera"); |
1e6dd65e | 818 | |
c820cc45 MCC |
819 | return (0); |
820 | } | |
1e6dd65e | 821 | |
543323bc | 822 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) |
c820cc45 MCC |
823 | { |
824 | *i = 0; | |
1e6dd65e | 825 | |
c820cc45 MCC |
826 | return (0); |
827 | } | |
543323bc | 828 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) |
c820cc45 MCC |
829 | { |
830 | if (i > 0) | |
831 | return -EINVAL; | |
1e6dd65e | 832 | |
c820cc45 MCC |
833 | return (0); |
834 | } | |
1e6dd65e MCC |
835 | |
836 | /* --- controls ---------------------------------------------- */ | |
543323bc MCC |
837 | static int vidioc_queryctrl(struct file *file, void *priv, |
838 | struct v4l2_queryctrl *qc) | |
c820cc45 MCC |
839 | { |
840 | int i; | |
1e6dd65e | 841 | |
c820cc45 MCC |
842 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
843 | if (qc->id && qc->id == vivi_qctrl[i].id) { | |
844 | memcpy(qc, &(vivi_qctrl[i]), | |
845 | sizeof(*qc)); | |
846 | return (0); | |
847 | } | |
1e6dd65e | 848 | |
c820cc45 MCC |
849 | return -EINVAL; |
850 | } | |
1e6dd65e | 851 | |
543323bc MCC |
852 | static int vidioc_g_ctrl(struct file *file, void *priv, |
853 | struct v4l2_control *ctrl) | |
c820cc45 MCC |
854 | { |
855 | int i; | |
1e6dd65e | 856 | |
c820cc45 MCC |
857 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
858 | if (ctrl->id == vivi_qctrl[i].id) { | |
543323bc | 859 | ctrl->value = qctl_regs[i]; |
c820cc45 MCC |
860 | return (0); |
861 | } | |
1e6dd65e | 862 | |
c820cc45 | 863 | return -EINVAL; |
1e6dd65e | 864 | } |
543323bc | 865 | static int vidioc_s_ctrl(struct file *file, void *priv, |
c820cc45 | 866 | struct v4l2_control *ctrl) |
1e6dd65e | 867 | { |
c820cc45 MCC |
868 | int i; |
869 | ||
870 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
871 | if (ctrl->id == vivi_qctrl[i].id) { | |
543323bc MCC |
872 | if (ctrl->value < vivi_qctrl[i].minimum |
873 | || ctrl->value > vivi_qctrl[i].maximum) { | |
c820cc45 MCC |
874 | return (-ERANGE); |
875 | } | |
543323bc | 876 | qctl_regs[i] = ctrl->value; |
c820cc45 MCC |
877 | return (0); |
878 | } | |
879 | return -EINVAL; | |
1e6dd65e MCC |
880 | } |
881 | ||
882 | /* ------------------------------------------------------------------ | |
883 | File operations for the device | |
884 | ------------------------------------------------------------------*/ | |
885 | ||
886 | #define line_buf_size(norm) (norm_maxw(norm)*(format.depth+7)/8) | |
887 | ||
888 | static int vivi_open(struct inode *inode, struct file *file) | |
889 | { | |
890 | int minor = iminor(inode); | |
a991f44b | 891 | struct vivi_dev *dev; |
63b79cfa | 892 | struct vivi_fh *fh = NULL; |
1e6dd65e | 893 | int i; |
aa9dbac4 | 894 | int retval = 0; |
1e6dd65e | 895 | |
543323bc | 896 | printk(KERN_DEBUG "vivi: open called (minor=%d)\n", minor); |
1e6dd65e | 897 | |
a991f44b | 898 | list_for_each_entry(dev, &vivi_devlist, vivi_devlist) |
f905c442 | 899 | if (dev->vfd->minor == minor) |
a991f44b TP |
900 | goto found; |
901 | return -ENODEV; | |
c820cc45 | 902 | |
543323bc | 903 | found: |
aa9dbac4 | 904 | mutex_lock(&dev->mutex); |
1e6dd65e MCC |
905 | dev->users++; |
906 | ||
aa9dbac4 BP |
907 | if (dev->users > 1) { |
908 | dev->users--; | |
909 | retval = -EBUSY; | |
910 | goto unlock; | |
911 | } | |
912 | ||
6c2f9901 | 913 | dprintk(dev, 1, "open minor=%d type=%s users=%d\n", minor, |
a991f44b | 914 | v4l2_type_names[V4L2_BUF_TYPE_VIDEO_CAPTURE], dev->users); |
1e6dd65e MCC |
915 | |
916 | /* allocate + initialize per filehandle data */ | |
543323bc | 917 | fh = kzalloc(sizeof(*fh), GFP_KERNEL); |
1e6dd65e MCC |
918 | if (NULL == fh) { |
919 | dev->users--; | |
aa9dbac4 BP |
920 | retval = -ENOMEM; |
921 | goto unlock; | |
1e6dd65e | 922 | } |
aa9dbac4 BP |
923 | unlock: |
924 | mutex_unlock(&dev->mutex); | |
925 | if (retval) | |
926 | return retval; | |
1e6dd65e MCC |
927 | |
928 | file->private_data = fh; | |
929 | fh->dev = dev; | |
c820cc45 | 930 | |
1e6dd65e MCC |
931 | fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
932 | fh->fmt = &format; | |
933 | fh->width = 640; | |
934 | fh->height = 480; | |
935 | ||
936 | /* Put all controls at a sane state */ | |
937 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
543323bc | 938 | qctl_regs[i] = vivi_qctrl[i].default_value; |
1e6dd65e MCC |
939 | |
940 | /* Resets frame counters */ | |
543323bc MCC |
941 | dev->h = 0; |
942 | dev->m = 0; | |
943 | dev->s = 0; | |
dfd8c04e | 944 | dev->ms = 0; |
543323bc MCC |
945 | dev->mv_count = 0; |
946 | dev->jiffies = jiffies; | |
947 | sprintf(dev->timestr, "%02d:%02d:%02d:%03d", | |
dfd8c04e | 948 | dev->h, dev->m, dev->s, dev->ms); |
1e6dd65e | 949 | |
5a037706 | 950 | videobuf_queue_vmalloc_init(&fh->vb_vidq, &vivi_video_qops, |
55862ac9 | 951 | NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED, |
543323bc | 952 | sizeof(struct vivi_buffer), fh); |
1e6dd65e | 953 | |
78718e5d BP |
954 | vivi_start_thread(fh); |
955 | ||
1e6dd65e MCC |
956 | return 0; |
957 | } | |
958 | ||
959 | static ssize_t | |
960 | vivi_read(struct file *file, char __user *data, size_t count, loff_t *ppos) | |
961 | { | |
543323bc | 962 | struct vivi_fh *fh = file->private_data; |
1e6dd65e | 963 | |
543323bc | 964 | if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
acb09af4 | 965 | return videobuf_read_stream(&fh->vb_vidq, data, count, ppos, 0, |
1e6dd65e MCC |
966 | file->f_flags & O_NONBLOCK); |
967 | } | |
968 | return 0; | |
969 | } | |
970 | ||
971 | static unsigned int | |
972 | vivi_poll(struct file *file, struct poll_table_struct *wait) | |
973 | { | |
c820cc45 | 974 | struct vivi_fh *fh = file->private_data; |
6c2f9901 | 975 | struct vivi_dev *dev = fh->dev; |
85c7c70b | 976 | struct videobuf_queue *q = &fh->vb_vidq; |
1e6dd65e | 977 | |
7e28adb2 | 978 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e MCC |
979 | |
980 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) | |
981 | return POLLERR; | |
982 | ||
85c7c70b | 983 | return videobuf_poll_stream(file, q, wait); |
1e6dd65e MCC |
984 | } |
985 | ||
f905c442 | 986 | static int vivi_close(struct inode *inode, struct file *file) |
1e6dd65e | 987 | { |
c820cc45 MCC |
988 | struct vivi_fh *fh = file->private_data; |
989 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
990 | struct vivi_dmaqueue *vidq = &dev->vidq; |
991 | ||
992 | int minor = iminor(inode); | |
993 | ||
994 | vivi_stop_thread(vidq); | |
053fcb60 | 995 | videobuf_stop(&fh->vb_vidq); |
1e6dd65e MCC |
996 | videobuf_mmap_free(&fh->vb_vidq); |
997 | ||
55712ff7 | 998 | kfree(fh); |
1e6dd65e | 999 | |
aa9dbac4 | 1000 | mutex_lock(&dev->mutex); |
1e6dd65e | 1001 | dev->users--; |
aa9dbac4 | 1002 | mutex_unlock(&dev->mutex); |
1e6dd65e | 1003 | |
6c2f9901 MCC |
1004 | dprintk(dev, 1, "close called (minor=%d, users=%d)\n", |
1005 | minor, dev->users); | |
1e6dd65e MCC |
1006 | |
1007 | return 0; | |
1008 | } | |
1009 | ||
55712ff7 | 1010 | static int vivi_release(void) |
f905c442 | 1011 | { |
55712ff7 MCC |
1012 | struct vivi_dev *dev; |
1013 | struct list_head *list; | |
1014 | ||
1015 | while (!list_empty(&vivi_devlist)) { | |
1016 | list = vivi_devlist.next; | |
1017 | list_del(list); | |
1018 | dev = list_entry(list, struct vivi_dev, vivi_devlist); | |
f905c442 | 1019 | |
55712ff7 MCC |
1020 | if (-1 != dev->vfd->minor) |
1021 | video_unregister_device(dev->vfd); | |
1022 | else | |
1023 | video_device_release(dev->vfd); | |
1024 | ||
1025 | kfree(dev); | |
1026 | } | |
f905c442 MCC |
1027 | |
1028 | return 0; | |
1029 | } | |
1030 | ||
543323bc | 1031 | static int vivi_mmap(struct file *file, struct vm_area_struct *vma) |
1e6dd65e | 1032 | { |
6c2f9901 MCC |
1033 | struct vivi_fh *fh = file->private_data; |
1034 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
1035 | int ret; |
1036 | ||
6c2f9901 | 1037 | dprintk(dev, 1, "mmap called, vma=0x%08lx\n", (unsigned long)vma); |
1e6dd65e | 1038 | |
543323bc | 1039 | ret = videobuf_mmap_mapper(&fh->vb_vidq, vma); |
1e6dd65e | 1040 | |
6c2f9901 | 1041 | dprintk(dev, 1, "vma start=0x%08lx, size=%ld, ret=%d\n", |
1e6dd65e MCC |
1042 | (unsigned long)vma->vm_start, |
1043 | (unsigned long)vma->vm_end-(unsigned long)vma->vm_start, | |
1044 | ret); | |
1045 | ||
1046 | return ret; | |
1047 | } | |
1048 | ||
fa027c2a | 1049 | static const struct file_operations vivi_fops = { |
1e6dd65e MCC |
1050 | .owner = THIS_MODULE, |
1051 | .open = vivi_open, | |
f905c442 | 1052 | .release = vivi_close, |
1e6dd65e MCC |
1053 | .read = vivi_read, |
1054 | .poll = vivi_poll, | |
c820cc45 | 1055 | .ioctl = video_ioctl2, /* V4L2 ioctl handler */ |
fbde31d5 | 1056 | .compat_ioctl = v4l_compat_ioctl32, |
5a037706 | 1057 | .mmap = vivi_mmap, |
1e6dd65e MCC |
1058 | .llseek = no_llseek, |
1059 | }; | |
1060 | ||
f905c442 | 1061 | static struct video_device vivi_template = { |
c820cc45 | 1062 | .name = "vivi", |
1e6dd65e | 1063 | .type = VID_TYPE_CAPTURE, |
1e6dd65e MCC |
1064 | .fops = &vivi_fops, |
1065 | .minor = -1, | |
f905c442 | 1066 | .release = video_device_release, |
c820cc45 MCC |
1067 | |
1068 | .vidioc_querycap = vidioc_querycap, | |
78b526a4 HV |
1069 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, |
1070 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
1071 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
1072 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
c820cc45 MCC |
1073 | .vidioc_reqbufs = vidioc_reqbufs, |
1074 | .vidioc_querybuf = vidioc_querybuf, | |
1075 | .vidioc_qbuf = vidioc_qbuf, | |
1076 | .vidioc_dqbuf = vidioc_dqbuf, | |
1077 | .vidioc_s_std = vidioc_s_std, | |
1078 | .vidioc_enum_input = vidioc_enum_input, | |
1079 | .vidioc_g_input = vidioc_g_input, | |
1080 | .vidioc_s_input = vidioc_s_input, | |
1081 | .vidioc_queryctrl = vidioc_queryctrl, | |
1082 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
1083 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
1084 | .vidioc_streamon = vidioc_streamon, | |
1085 | .vidioc_streamoff = vidioc_streamoff, | |
0dfa9abd | 1086 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
c820cc45 MCC |
1087 | .vidiocgmbuf = vidiocgmbuf, |
1088 | #endif | |
784c668b | 1089 | .tvnorms = V4L2_STD_525_60, |
e75f9cee | 1090 | .current_norm = V4L2_STD_NTSC_M, |
1e6dd65e | 1091 | }; |
c820cc45 | 1092 | /* ----------------------------------------------------------------- |
1e6dd65e MCC |
1093 | Initialization and module stuff |
1094 | ------------------------------------------------------------------*/ | |
1095 | ||
1096 | static int __init vivi_init(void) | |
1097 | { | |
55712ff7 | 1098 | int ret = -ENOMEM, i; |
1e6dd65e | 1099 | struct vivi_dev *dev; |
f905c442 | 1100 | struct video_device *vfd; |
1e6dd65e | 1101 | |
55712ff7 MCC |
1102 | for (i = 0; i < n_devs; i++) { |
1103 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); | |
1104 | if (NULL == dev) | |
1105 | break; | |
1e6dd65e | 1106 | |
55712ff7 | 1107 | list_add_tail(&dev->vivi_devlist, &vivi_devlist); |
1e6dd65e | 1108 | |
55712ff7 MCC |
1109 | /* init video dma queues */ |
1110 | INIT_LIST_HEAD(&dev->vidq.active); | |
55712ff7 | 1111 | init_waitqueue_head(&dev->vidq.wq); |
1e6dd65e | 1112 | |
55712ff7 | 1113 | /* initialize locks */ |
55862ac9 | 1114 | spin_lock_init(&dev->slock); |
aa9dbac4 | 1115 | mutex_init(&dev->mutex); |
1e6dd65e | 1116 | |
55712ff7 MCC |
1117 | vfd = video_device_alloc(); |
1118 | if (NULL == vfd) | |
1119 | break; | |
1120 | ||
1121 | *vfd = vivi_template; | |
1122 | ||
1123 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr); | |
1124 | if (ret < 0) | |
1125 | break; | |
1126 | ||
1127 | snprintf(vfd->name, sizeof(vfd->name), "%s (%i)", | |
1128 | vivi_template.name, vfd->minor); | |
f905c442 | 1129 | |
55712ff7 MCC |
1130 | if (video_nr >= 0) |
1131 | video_nr++; | |
f905c442 | 1132 | |
55712ff7 MCC |
1133 | dev->vfd = vfd; |
1134 | } | |
f905c442 | 1135 | |
55712ff7 MCC |
1136 | if (ret < 0) { |
1137 | vivi_release(); | |
1138 | printk(KERN_INFO "Error %d while loading vivi driver\n", ret); | |
1139 | } else | |
1140 | printk(KERN_INFO "Video Technology Magazine Virtual Video " | |
1141 | "Capture Board successfully loaded.\n"); | |
1e6dd65e MCC |
1142 | return ret; |
1143 | } | |
1144 | ||
1145 | static void __exit vivi_exit(void) | |
1146 | { | |
55712ff7 | 1147 | vivi_release(); |
1e6dd65e MCC |
1148 | } |
1149 | ||
1150 | module_init(vivi_init); | |
1151 | module_exit(vivi_exit); | |
c820cc45 MCC |
1152 | |
1153 | MODULE_DESCRIPTION("Video Technology Magazine Virtual Video Capture Board"); | |
1154 | MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol"); | |
1155 | MODULE_LICENSE("Dual BSD/GPL"); | |
1156 | ||
1157 | module_param(video_nr, int, 0); | |
55712ff7 | 1158 | MODULE_PARM_DESC(video_nr, "video iminor start number"); |
c820cc45 | 1159 | |
55712ff7 MCC |
1160 | module_param(n_devs, int, 0); |
1161 | MODULE_PARM_DESC(n_devs, "number of video devices to create"); | |
c820cc45 | 1162 | |
8996b3f3 | 1163 | module_param_named(debug, vivi_template.debug, int, 0444); |
55712ff7 | 1164 | MODULE_PARM_DESC(debug, "activates debug info"); |
c820cc45 | 1165 | |
55712ff7 MCC |
1166 | module_param(vid_limit, int, 0644); |
1167 | MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes"); |