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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 | 41 | |
584ce48d | 42 | #define VIVI_MODULE_NAME "vivi" |
745271ae | 43 | |
1e6dd65e MCC |
44 | /* Wake up at about 30 fps */ |
45 | #define WAKE_NUMERATOR 30 | |
46 | #define WAKE_DENOMINATOR 1001 | |
47 | #define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */ | |
48 | ||
1e6dd65e MCC |
49 | #include "font.h" |
50 | ||
1e6dd65e | 51 | #define VIVI_MAJOR_VERSION 0 |
745271ae | 52 | #define VIVI_MINOR_VERSION 5 |
1e6dd65e | 53 | #define VIVI_RELEASE 0 |
543323bc MCC |
54 | #define VIVI_VERSION \ |
55 | KERNEL_VERSION(VIVI_MAJOR_VERSION, VIVI_MINOR_VERSION, VIVI_RELEASE) | |
1e6dd65e | 56 | |
c820cc45 MCC |
57 | /* Declare static vars that will be used as parameters */ |
58 | static unsigned int vid_limit = 16; /* Video memory limit, in Mb */ | |
c820cc45 | 59 | static int video_nr = -1; /* /dev/videoN, -1 for autodetect */ |
55712ff7 | 60 | static int n_devs = 1; /* Number of virtual devices */ |
1e6dd65e MCC |
61 | |
62 | /* supported controls */ | |
63 | static struct v4l2_queryctrl vivi_qctrl[] = { | |
64 | { | |
65 | .id = V4L2_CID_AUDIO_VOLUME, | |
66 | .name = "Volume", | |
67 | .minimum = 0, | |
68 | .maximum = 65535, | |
69 | .step = 65535/100, | |
70 | .default_value = 65535, | |
71 | .flags = 0, | |
72 | .type = V4L2_CTRL_TYPE_INTEGER, | |
543323bc | 73 | }, { |
1e6dd65e MCC |
74 | .id = V4L2_CID_BRIGHTNESS, |
75 | .type = V4L2_CTRL_TYPE_INTEGER, | |
76 | .name = "Brightness", | |
77 | .minimum = 0, | |
78 | .maximum = 255, | |
79 | .step = 1, | |
80 | .default_value = 127, | |
81 | .flags = 0, | |
82 | }, { | |
83 | .id = V4L2_CID_CONTRAST, | |
84 | .type = V4L2_CTRL_TYPE_INTEGER, | |
85 | .name = "Contrast", | |
86 | .minimum = 0, | |
87 | .maximum = 255, | |
88 | .step = 0x1, | |
89 | .default_value = 0x10, | |
90 | .flags = 0, | |
91 | }, { | |
92 | .id = V4L2_CID_SATURATION, | |
93 | .type = V4L2_CTRL_TYPE_INTEGER, | |
94 | .name = "Saturation", | |
95 | .minimum = 0, | |
96 | .maximum = 255, | |
97 | .step = 0x1, | |
98 | .default_value = 127, | |
99 | .flags = 0, | |
100 | }, { | |
101 | .id = V4L2_CID_HUE, | |
102 | .type = V4L2_CTRL_TYPE_INTEGER, | |
103 | .name = "Hue", | |
104 | .minimum = -128, | |
105 | .maximum = 127, | |
106 | .step = 0x1, | |
107 | .default_value = 0, | |
108 | .flags = 0, | |
109 | } | |
110 | }; | |
111 | ||
112 | static int qctl_regs[ARRAY_SIZE(vivi_qctrl)]; | |
113 | ||
6c2f9901 | 114 | #define dprintk(dev, level, fmt, arg...) \ |
c820cc45 | 115 | do { \ |
6c2f9901 | 116 | if (dev->vfd->debug >= (level)) \ |
c820cc45 | 117 | printk(KERN_DEBUG "vivi: " fmt , ## arg); \ |
1e6dd65e MCC |
118 | } while (0) |
119 | ||
120 | /* ------------------------------------------------------------------ | |
121 | Basic structures | |
122 | ------------------------------------------------------------------*/ | |
123 | ||
124 | struct vivi_fmt { | |
125 | char *name; | |
126 | u32 fourcc; /* v4l2 format id */ | |
127 | int depth; | |
128 | }; | |
129 | ||
130 | static struct vivi_fmt format = { | |
131 | .name = "4:2:2, packed, YUYV", | |
132 | .fourcc = V4L2_PIX_FMT_YUYV, | |
133 | .depth = 16, | |
134 | }; | |
135 | ||
136 | struct sg_to_addr { | |
137 | int pos; | |
138 | struct scatterlist *sg; | |
139 | }; | |
140 | ||
141 | /* buffer for one video frame */ | |
142 | struct vivi_buffer { | |
143 | /* common v4l buffer stuff -- must be first */ | |
144 | struct videobuf_buffer vb; | |
145 | ||
146 | struct vivi_fmt *fmt; | |
1e6dd65e MCC |
147 | }; |
148 | ||
149 | struct vivi_dmaqueue { | |
150 | struct list_head active; | |
1e6dd65e MCC |
151 | |
152 | /* thread for generating video stream*/ | |
153 | struct task_struct *kthread; | |
154 | wait_queue_head_t wq; | |
155 | /* Counters to control fps rate */ | |
156 | int frame; | |
157 | int ini_jiffies; | |
158 | }; | |
159 | ||
160 | static LIST_HEAD(vivi_devlist); | |
161 | ||
162 | struct vivi_dev { | |
163 | struct list_head vivi_devlist; | |
164 | ||
55862ac9 | 165 | spinlock_t slock; |
aa9dbac4 | 166 | struct mutex mutex; |
1e6dd65e MCC |
167 | |
168 | int users; | |
169 | ||
170 | /* various device info */ | |
f905c442 | 171 | struct video_device *vfd; |
1e6dd65e MCC |
172 | |
173 | struct vivi_dmaqueue vidq; | |
174 | ||
175 | /* Several counters */ | |
dfd8c04e MCC |
176 | int h, m, s, ms; |
177 | unsigned long jiffies; | |
1e6dd65e | 178 | char timestr[13]; |
025341d4 MCC |
179 | |
180 | int mv_count; /* Controls bars movement */ | |
1e6dd65e MCC |
181 | }; |
182 | ||
183 | struct vivi_fh { | |
184 | struct vivi_dev *dev; | |
185 | ||
186 | /* video capture */ | |
187 | struct vivi_fmt *fmt; | |
543323bc | 188 | unsigned int width, height; |
1e6dd65e MCC |
189 | struct videobuf_queue vb_vidq; |
190 | ||
191 | enum v4l2_buf_type type; | |
192 | }; | |
193 | ||
194 | /* ------------------------------------------------------------------ | |
195 | DMA and thread functions | |
196 | ------------------------------------------------------------------*/ | |
197 | ||
198 | /* Bars and Colors should match positions */ | |
199 | ||
200 | enum colors { | |
201 | WHITE, | |
202 | AMBAR, | |
203 | CYAN, | |
204 | GREEN, | |
205 | MAGENTA, | |
206 | RED, | |
543323bc MCC |
207 | BLUE, |
208 | BLACK, | |
1e6dd65e MCC |
209 | }; |
210 | ||
211 | static u8 bars[8][3] = { | |
212 | /* R G B */ | |
543323bc MCC |
213 | {204, 204, 204}, /* white */ |
214 | {208, 208, 0}, /* ambar */ | |
215 | { 0, 206, 206}, /* cyan */ | |
216 | { 0, 239, 0}, /* green */ | |
217 | {239, 0, 239}, /* magenta */ | |
218 | {205, 0, 0}, /* red */ | |
219 | { 0, 0, 255}, /* blue */ | |
220 | { 0, 0, 0}, /* black */ | |
1e6dd65e MCC |
221 | }; |
222 | ||
543323bc MCC |
223 | #define TO_Y(r, g, b) \ |
224 | (((16829 * r + 33039 * g + 6416 * b + 32768) >> 16) + 16) | |
1e6dd65e | 225 | /* RGB to V(Cr) Color transform */ |
543323bc MCC |
226 | #define TO_V(r, g, b) \ |
227 | (((28784 * r - 24103 * g - 4681 * b + 32768) >> 16) + 128) | |
1e6dd65e | 228 | /* RGB to U(Cb) Color transform */ |
543323bc MCC |
229 | #define TO_U(r, g, b) \ |
230 | (((-9714 * r - 19070 * g + 28784 * b + 32768) >> 16) + 128) | |
1e6dd65e MCC |
231 | |
232 | #define TSTAMP_MIN_Y 24 | |
233 | #define TSTAMP_MAX_Y TSTAMP_MIN_Y+15 | |
234 | #define TSTAMP_MIN_X 64 | |
235 | ||
543323bc MCC |
236 | static void gen_line(char *basep, int inipos, int wmax, |
237 | int hmax, int line, int count, char *timestr) | |
1e6dd65e | 238 | { |
543323bc MCC |
239 | int w, i, j, y; |
240 | int pos = inipos; | |
241 | char *p, *s; | |
242 | u8 chr, r, g, b, color; | |
1e6dd65e MCC |
243 | |
244 | /* We will just duplicate the second pixel at the packet */ | |
543323bc | 245 | wmax /= 2; |
1e6dd65e MCC |
246 | |
247 | /* Generate a standard color bar pattern */ | |
543323bc MCC |
248 | for (w = 0; w < wmax; w++) { |
249 | int colorpos = ((w + count) * 8/(wmax + 1)) % 8; | |
250 | r = bars[colorpos][0]; | |
251 | g = bars[colorpos][1]; | |
252 | b = bars[colorpos][2]; | |
1e6dd65e | 253 | |
543323bc MCC |
254 | for (color = 0; color < 4; color++) { |
255 | p = basep + pos; | |
1e6dd65e MCC |
256 | |
257 | switch (color) { | |
543323bc MCC |
258 | case 0: |
259 | case 2: | |
260 | *p = TO_Y(r, g, b); /* Luma */ | |
261 | break; | |
262 | case 1: | |
263 | *p = TO_U(r, g, b); /* Cb */ | |
264 | break; | |
265 | case 3: | |
266 | *p = TO_V(r, g, b); /* Cr */ | |
267 | break; | |
1e6dd65e MCC |
268 | } |
269 | pos++; | |
270 | } | |
271 | } | |
272 | ||
273 | /* Checks if it is possible to show timestamp */ | |
543323bc | 274 | if (TSTAMP_MAX_Y >= hmax) |
1e6dd65e | 275 | goto end; |
543323bc | 276 | if (TSTAMP_MIN_X + strlen(timestr) >= wmax) |
1e6dd65e MCC |
277 | goto end; |
278 | ||
279 | /* Print stream time */ | |
543323bc MCC |
280 | if (line >= TSTAMP_MIN_Y && line <= TSTAMP_MAX_Y) { |
281 | j = TSTAMP_MIN_X; | |
282 | for (s = timestr; *s; s++) { | |
283 | chr = rom8x16_bits[(*s-0x30)*16+line-TSTAMP_MIN_Y]; | |
284 | for (i = 0; i < 7; i++) { | |
285 | if (chr & 1 << (7 - i)) { | |
286 | /* Font color*/ | |
287 | r = 0; | |
288 | g = 198; | |
289 | b = 0; | |
290 | } else { | |
291 | /* Background color */ | |
292 | r = bars[BLACK][0]; | |
293 | g = bars[BLACK][1]; | |
294 | b = bars[BLACK][2]; | |
1e6dd65e MCC |
295 | } |
296 | ||
543323bc MCC |
297 | pos = inipos + j * 2; |
298 | for (color = 0; color < 4; color++) { | |
299 | p = basep + pos; | |
1e6dd65e | 300 | |
543323bc | 301 | y = TO_Y(r, g, b); |
1e6dd65e MCC |
302 | |
303 | switch (color) { | |
543323bc MCC |
304 | case 0: |
305 | case 2: | |
306 | *p = TO_Y(r, g, b); /* Luma */ | |
307 | break; | |
308 | case 1: | |
309 | *p = TO_U(r, g, b); /* Cb */ | |
310 | break; | |
311 | case 3: | |
312 | *p = TO_V(r, g, b); /* Cr */ | |
313 | break; | |
1e6dd65e MCC |
314 | } |
315 | pos++; | |
316 | } | |
317 | j++; | |
318 | } | |
319 | } | |
320 | } | |
321 | ||
1e6dd65e | 322 | end: |
b50e7fe9 | 323 | return; |
1e6dd65e | 324 | } |
78718e5d | 325 | |
543323bc | 326 | static void vivi_fillbuff(struct vivi_dev *dev, struct vivi_buffer *buf) |
1e6dd65e | 327 | { |
543323bc | 328 | int h , pos = 0; |
1e6dd65e MCC |
329 | int hmax = buf->vb.height; |
330 | int wmax = buf->vb.width; | |
1e6dd65e | 331 | struct timeval ts; |
5c554e6b | 332 | char *tmpbuf; |
543323bc | 333 | void *vbuf = videobuf_to_vmalloc(&buf->vb); |
b50e7fe9 | 334 | |
5c554e6b | 335 | if (!vbuf) |
5a037706 | 336 | return; |
1e6dd65e | 337 | |
5c554e6b MS |
338 | tmpbuf = kmalloc(wmax * 2, GFP_ATOMIC); |
339 | if (!tmpbuf) | |
78718e5d BP |
340 | return; |
341 | ||
543323bc | 342 | for (h = 0; h < hmax; h++) { |
025341d4 | 343 | gen_line(tmpbuf, 0, wmax, hmax, h, dev->mv_count, |
3bef5e4a | 344 | dev->timestr); |
78718e5d | 345 | memcpy(vbuf + pos, tmpbuf, wmax * 2); |
1e6dd65e MCC |
346 | pos += wmax*2; |
347 | } | |
348 | ||
025341d4 | 349 | dev->mv_count++; |
3bef5e4a | 350 | |
5a037706 MCC |
351 | kfree(tmpbuf); |
352 | ||
1e6dd65e MCC |
353 | /* Updates stream time */ |
354 | ||
dfd8c04e | 355 | dev->ms += jiffies_to_msecs(jiffies-dev->jiffies); |
543323bc | 356 | dev->jiffies = jiffies; |
dfd8c04e MCC |
357 | if (dev->ms >= 1000) { |
358 | dev->ms -= 1000; | |
1e6dd65e | 359 | dev->s++; |
543323bc MCC |
360 | if (dev->s >= 60) { |
361 | dev->s -= 60; | |
1e6dd65e | 362 | dev->m++; |
543323bc MCC |
363 | if (dev->m > 60) { |
364 | dev->m -= 60; | |
1e6dd65e | 365 | dev->h++; |
543323bc MCC |
366 | if (dev->h > 24) |
367 | dev->h -= 24; | |
1e6dd65e MCC |
368 | } |
369 | } | |
370 | } | |
543323bc | 371 | sprintf(dev->timestr, "%02d:%02d:%02d:%03d", |
dfd8c04e | 372 | dev->h, dev->m, dev->s, dev->ms); |
1e6dd65e | 373 | |
6c2f9901 MCC |
374 | dprintk(dev, 2, "vivifill at %s: Buffer 0x%08lx size= %d\n", |
375 | dev->timestr, (unsigned long)tmpbuf, pos); | |
1e6dd65e MCC |
376 | |
377 | /* Advice that buffer was filled */ | |
1e6dd65e MCC |
378 | buf->vb.field_count++; |
379 | do_gettimeofday(&ts); | |
380 | buf->vb.ts = ts; | |
78718e5d | 381 | buf->vb.state = VIDEOBUF_DONE; |
1e6dd65e MCC |
382 | } |
383 | ||
78718e5d | 384 | static void vivi_thread_tick(struct vivi_fh *fh) |
1e6dd65e | 385 | { |
78718e5d BP |
386 | struct vivi_buffer *buf; |
387 | struct vivi_dev *dev = fh->dev; | |
388 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
1e6dd65e | 389 | |
78718e5d | 390 | unsigned long flags = 0; |
1e6dd65e | 391 | |
78718e5d | 392 | dprintk(dev, 1, "Thread tick\n"); |
1e6dd65e | 393 | |
78718e5d BP |
394 | spin_lock_irqsave(&dev->slock, flags); |
395 | if (list_empty(&dma_q->active)) { | |
396 | dprintk(dev, 1, "No active queue to serve\n"); | |
397 | goto unlock; | |
398 | } | |
1e6dd65e | 399 | |
78718e5d BP |
400 | buf = list_entry(dma_q->active.next, |
401 | struct vivi_buffer, vb.queue); | |
1e6dd65e | 402 | |
78718e5d BP |
403 | /* Nobody is waiting on this buffer, return */ |
404 | if (!waitqueue_active(&buf->vb.done)) | |
405 | goto unlock; | |
1e6dd65e | 406 | |
78718e5d | 407 | list_del(&buf->vb.queue); |
0b600512 | 408 | |
78718e5d BP |
409 | do_gettimeofday(&buf->vb.ts); |
410 | ||
411 | /* Fill buffer */ | |
412 | vivi_fillbuff(dev, buf); | |
413 | dprintk(dev, 1, "filled buffer %p\n", buf); | |
414 | ||
415 | wake_up(&buf->vb.done); | |
416 | dprintk(dev, 2, "[%p/%d] wakeup\n", buf, buf->vb. i); | |
417 | unlock: | |
418 | spin_unlock_irqrestore(&dev->slock, flags); | |
419 | return; | |
1e6dd65e MCC |
420 | } |
421 | ||
6594ad82 MCC |
422 | #define frames_to_ms(frames) \ |
423 | ((frames * WAKE_NUMERATOR * 1000) / WAKE_DENOMINATOR) | |
424 | ||
78718e5d | 425 | static void vivi_sleep(struct vivi_fh *fh) |
1e6dd65e | 426 | { |
78718e5d BP |
427 | struct vivi_dev *dev = fh->dev; |
428 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
429 | int timeout; | |
1e6dd65e MCC |
430 | DECLARE_WAITQUEUE(wait, current); |
431 | ||
7e28adb2 | 432 | dprintk(dev, 1, "%s dma_q=0x%08lx\n", __func__, |
6c2f9901 | 433 | (unsigned long)dma_q); |
1e6dd65e MCC |
434 | |
435 | add_wait_queue(&dma_q->wq, &wait); | |
6594ad82 MCC |
436 | if (kthread_should_stop()) |
437 | goto stop_task; | |
438 | ||
6594ad82 | 439 | /* Calculate time to wake up */ |
78718e5d | 440 | timeout = msecs_to_jiffies(frames_to_ms(1)); |
6594ad82 | 441 | |
78718e5d | 442 | vivi_thread_tick(fh); |
6594ad82 MCC |
443 | |
444 | schedule_timeout_interruptible(timeout); | |
1e6dd65e | 445 | |
6594ad82 | 446 | stop_task: |
1e6dd65e MCC |
447 | remove_wait_queue(&dma_q->wq, &wait); |
448 | try_to_freeze(); | |
449 | } | |
450 | ||
972c3517 | 451 | static int vivi_thread(void *data) |
1e6dd65e | 452 | { |
78718e5d BP |
453 | struct vivi_fh *fh = data; |
454 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e | 455 | |
6c2f9901 | 456 | dprintk(dev, 1, "thread started\n"); |
1e6dd65e | 457 | |
83144186 | 458 | set_freezable(); |
0b600512 | 459 | |
1e6dd65e | 460 | for (;;) { |
78718e5d | 461 | vivi_sleep(fh); |
1e6dd65e MCC |
462 | |
463 | if (kthread_should_stop()) | |
464 | break; | |
465 | } | |
6c2f9901 | 466 | dprintk(dev, 1, "thread: exit\n"); |
1e6dd65e MCC |
467 | return 0; |
468 | } | |
469 | ||
78718e5d | 470 | static int vivi_start_thread(struct vivi_fh *fh) |
1e6dd65e | 471 | { |
78718e5d BP |
472 | struct vivi_dev *dev = fh->dev; |
473 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
6c2f9901 | 474 | |
543323bc MCC |
475 | dma_q->frame = 0; |
476 | dma_q->ini_jiffies = jiffies; | |
1e6dd65e | 477 | |
7e28adb2 | 478 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e | 479 | |
78718e5d | 480 | dma_q->kthread = kthread_run(vivi_thread, fh, "vivi"); |
1e6dd65e | 481 | |
054afee4 | 482 | if (IS_ERR(dma_q->kthread)) { |
1e6dd65e | 483 | printk(KERN_ERR "vivi: kernel_thread() failed\n"); |
054afee4 | 484 | return PTR_ERR(dma_q->kthread); |
1e6dd65e | 485 | } |
0b600512 MCC |
486 | /* Wakes thread */ |
487 | wake_up_interruptible(&dma_q->wq); | |
488 | ||
7e28adb2 | 489 | dprintk(dev, 1, "returning from %s\n", __func__); |
1e6dd65e MCC |
490 | return 0; |
491 | } | |
492 | ||
972c3517 | 493 | static void vivi_stop_thread(struct vivi_dmaqueue *dma_q) |
1e6dd65e | 494 | { |
6c2f9901 MCC |
495 | struct vivi_dev *dev = container_of(dma_q, struct vivi_dev, vidq); |
496 | ||
7e28adb2 | 497 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e MCC |
498 | /* shutdown control thread */ |
499 | if (dma_q->kthread) { | |
500 | kthread_stop(dma_q->kthread); | |
543323bc | 501 | dma_q->kthread = NULL; |
1e6dd65e MCC |
502 | } |
503 | } | |
504 | ||
1e6dd65e MCC |
505 | /* ------------------------------------------------------------------ |
506 | Videobuf operations | |
507 | ------------------------------------------------------------------*/ | |
508 | static int | |
509 | buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) | |
510 | { | |
6c2f9901 MCC |
511 | struct vivi_fh *fh = vq->priv_data; |
512 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
513 | |
514 | *size = fh->width*fh->height*2; | |
515 | ||
516 | if (0 == *count) | |
517 | *count = 32; | |
6bb2790f | 518 | |
1e6dd65e MCC |
519 | while (*size * *count > vid_limit * 1024 * 1024) |
520 | (*count)--; | |
6bb2790f | 521 | |
7e28adb2 | 522 | dprintk(dev, 1, "%s, count=%d, size=%d\n", __func__, |
6c2f9901 | 523 | *count, *size); |
6bb2790f | 524 | |
1e6dd65e MCC |
525 | return 0; |
526 | } | |
527 | ||
972c3517 | 528 | static void free_buffer(struct videobuf_queue *vq, struct vivi_buffer *buf) |
1e6dd65e | 529 | { |
6c2f9901 MCC |
530 | struct vivi_fh *fh = vq->priv_data; |
531 | struct vivi_dev *dev = fh->dev; | |
532 | ||
7e28adb2 | 533 | dprintk(dev, 1, "%s, state: %i\n", __func__, buf->vb.state); |
1e6dd65e MCC |
534 | |
535 | if (in_interrupt()) | |
536 | BUG(); | |
537 | ||
5a037706 | 538 | videobuf_vmalloc_free(&buf->vb); |
fbde31d5 | 539 | dprintk(dev, 1, "free_buffer: freed\n"); |
0fc0686e | 540 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
1e6dd65e MCC |
541 | } |
542 | ||
543 | #define norm_maxw() 1024 | |
544 | #define norm_maxh() 768 | |
545 | static int | |
546 | buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, | |
547 | enum v4l2_field field) | |
548 | { | |
549 | struct vivi_fh *fh = vq->priv_data; | |
6c2f9901 | 550 | struct vivi_dev *dev = fh->dev; |
543323bc | 551 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
78718e5d | 552 | int rc; |
1e6dd65e | 553 | |
7e28adb2 | 554 | dprintk(dev, 1, "%s, field=%d\n", __func__, field); |
1e6dd65e MCC |
555 | |
556 | BUG_ON(NULL == fh->fmt); | |
78718e5d | 557 | |
1e6dd65e MCC |
558 | if (fh->width < 48 || fh->width > norm_maxw() || |
559 | fh->height < 32 || fh->height > norm_maxh()) | |
560 | return -EINVAL; | |
78718e5d | 561 | |
1e6dd65e MCC |
562 | buf->vb.size = fh->width*fh->height*2; |
563 | if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) | |
564 | return -EINVAL; | |
565 | ||
78718e5d BP |
566 | /* These properties only change when queue is idle, see s_fmt */ |
567 | buf->fmt = fh->fmt; | |
568 | buf->vb.width = fh->width; | |
569 | buf->vb.height = fh->height; | |
570 | buf->vb.field = field; | |
1e6dd65e | 571 | |
0fc0686e | 572 | if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { |
543323bc MCC |
573 | rc = videobuf_iolock(vq, &buf->vb, NULL); |
574 | if (rc < 0) | |
1e6dd65e MCC |
575 | goto fail; |
576 | } | |
577 | ||
0fc0686e | 578 | buf->vb.state = VIDEOBUF_PREPARED; |
1e6dd65e | 579 | |
1e6dd65e MCC |
580 | return 0; |
581 | ||
582 | fail: | |
543323bc | 583 | free_buffer(vq, buf); |
1e6dd65e MCC |
584 | return rc; |
585 | } | |
586 | ||
587 | static void | |
588 | buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) | |
589 | { | |
543323bc MCC |
590 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
591 | struct vivi_fh *fh = vq->priv_data; | |
592 | struct vivi_dev *dev = fh->dev; | |
78718e5d BP |
593 | struct vivi_dmaqueue *vidq = &dev->vidq; |
594 | ||
7e28adb2 | 595 | dprintk(dev, 1, "%s\n", __func__); |
78718e5d BP |
596 | |
597 | buf->vb.state = VIDEOBUF_QUEUED; | |
598 | list_add_tail(&buf->vb.queue, &vidq->active); | |
1e6dd65e MCC |
599 | } |
600 | ||
543323bc MCC |
601 | static void buffer_release(struct videobuf_queue *vq, |
602 | struct videobuf_buffer *vb) | |
1e6dd65e | 603 | { |
543323bc | 604 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
1e6dd65e | 605 | struct vivi_fh *fh = vq->priv_data; |
543323bc | 606 | struct vivi_dev *dev = (struct vivi_dev *)fh->dev; |
1e6dd65e | 607 | |
7e28adb2 | 608 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e | 609 | |
543323bc | 610 | free_buffer(vq, buf); |
1e6dd65e MCC |
611 | } |
612 | ||
1e6dd65e MCC |
613 | static struct videobuf_queue_ops vivi_video_qops = { |
614 | .buf_setup = buffer_setup, | |
615 | .buf_prepare = buffer_prepare, | |
616 | .buf_queue = buffer_queue, | |
617 | .buf_release = buffer_release, | |
1e6dd65e MCC |
618 | }; |
619 | ||
c820cc45 MCC |
620 | /* ------------------------------------------------------------------ |
621 | IOCTL vidioc handling | |
622 | ------------------------------------------------------------------*/ | |
543323bc | 623 | static int vidioc_querycap(struct file *file, void *priv, |
c820cc45 MCC |
624 | struct v4l2_capability *cap) |
625 | { | |
626 | strcpy(cap->driver, "vivi"); | |
627 | strcpy(cap->card, "vivi"); | |
628 | cap->version = VIVI_VERSION; | |
629 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | | |
630 | V4L2_CAP_STREAMING | | |
631 | V4L2_CAP_READWRITE; | |
632 | return 0; | |
633 | } | |
634 | ||
78b526a4 | 635 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 MCC |
636 | struct v4l2_fmtdesc *f) |
637 | { | |
638 | if (f->index > 0) | |
639 | return -EINVAL; | |
640 | ||
543323bc | 641 | strlcpy(f->description, format.name, sizeof(f->description)); |
c820cc45 MCC |
642 | f->pixelformat = format.fourcc; |
643 | return 0; | |
644 | } | |
645 | ||
78b526a4 | 646 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 MCC |
647 | struct v4l2_format *f) |
648 | { | |
543323bc | 649 | struct vivi_fh *fh = priv; |
c820cc45 MCC |
650 | |
651 | f->fmt.pix.width = fh->width; | |
652 | f->fmt.pix.height = fh->height; | |
653 | f->fmt.pix.field = fh->vb_vidq.field; | |
654 | f->fmt.pix.pixelformat = fh->fmt->fourcc; | |
655 | f->fmt.pix.bytesperline = | |
656 | (f->fmt.pix.width * fh->fmt->depth) >> 3; | |
657 | f->fmt.pix.sizeimage = | |
658 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
659 | ||
660 | return (0); | |
661 | } | |
662 | ||
78b526a4 | 663 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, |
1e6dd65e MCC |
664 | struct v4l2_format *f) |
665 | { | |
6c2f9901 MCC |
666 | struct vivi_fh *fh = priv; |
667 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
668 | struct vivi_fmt *fmt; |
669 | enum v4l2_field field; | |
670 | unsigned int maxw, maxh; | |
671 | ||
672 | if (format.fourcc != f->fmt.pix.pixelformat) { | |
6c2f9901 MCC |
673 | dprintk(dev, 1, "Fourcc format (0x%08x) invalid. " |
674 | "Driver accepts only 0x%08x\n", | |
675 | f->fmt.pix.pixelformat, format.fourcc); | |
1e6dd65e MCC |
676 | return -EINVAL; |
677 | } | |
543323bc | 678 | fmt = &format; |
1e6dd65e MCC |
679 | |
680 | field = f->fmt.pix.field; | |
681 | ||
682 | if (field == V4L2_FIELD_ANY) { | |
543323bc | 683 | field = V4L2_FIELD_INTERLACED; |
1e6dd65e | 684 | } else if (V4L2_FIELD_INTERLACED != field) { |
6c2f9901 | 685 | dprintk(dev, 1, "Field type invalid.\n"); |
1e6dd65e MCC |
686 | return -EINVAL; |
687 | } | |
688 | ||
689 | maxw = norm_maxw(); | |
690 | maxh = norm_maxh(); | |
691 | ||
692 | f->fmt.pix.field = field; | |
693 | if (f->fmt.pix.height < 32) | |
694 | f->fmt.pix.height = 32; | |
695 | if (f->fmt.pix.height > maxh) | |
696 | f->fmt.pix.height = maxh; | |
697 | if (f->fmt.pix.width < 48) | |
698 | f->fmt.pix.width = 48; | |
699 | if (f->fmt.pix.width > maxw) | |
700 | f->fmt.pix.width = maxw; | |
701 | f->fmt.pix.width &= ~0x03; | |
702 | f->fmt.pix.bytesperline = | |
703 | (f->fmt.pix.width * fmt->depth) >> 3; | |
704 | f->fmt.pix.sizeimage = | |
705 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
706 | ||
707 | return 0; | |
708 | } | |
709 | ||
c820cc45 | 710 | /*FIXME: This seems to be generic enough to be at videodev2 */ |
78b526a4 | 711 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 | 712 | struct v4l2_format *f) |
1e6dd65e | 713 | { |
543323bc | 714 | struct vivi_fh *fh = priv; |
78718e5d BP |
715 | struct videobuf_queue *q = &fh->vb_vidq; |
716 | ||
78b526a4 | 717 | int ret = vidioc_try_fmt_vid_cap(file, fh, f); |
c820cc45 MCC |
718 | if (ret < 0) |
719 | return (ret); | |
720 | ||
78718e5d BP |
721 | mutex_lock(&q->vb_lock); |
722 | ||
723 | if (videobuf_queue_is_busy(&fh->vb_vidq)) { | |
7e28adb2 | 724 | dprintk(fh->dev, 1, "%s queue busy\n", __func__); |
78718e5d BP |
725 | ret = -EBUSY; |
726 | goto out; | |
727 | } | |
728 | ||
c820cc45 MCC |
729 | fh->fmt = &format; |
730 | fh->width = f->fmt.pix.width; | |
731 | fh->height = f->fmt.pix.height; | |
732 | fh->vb_vidq.field = f->fmt.pix.field; | |
733 | fh->type = f->type; | |
734 | ||
78718e5d BP |
735 | ret = 0; |
736 | out: | |
737 | mutex_unlock(&q->vb_lock); | |
738 | ||
739 | return (ret); | |
1e6dd65e MCC |
740 | } |
741 | ||
543323bc MCC |
742 | static int vidioc_reqbufs(struct file *file, void *priv, |
743 | struct v4l2_requestbuffers *p) | |
1e6dd65e | 744 | { |
543323bc | 745 | struct vivi_fh *fh = priv; |
1e6dd65e | 746 | |
c820cc45 | 747 | return (videobuf_reqbufs(&fh->vb_vidq, p)); |
1e6dd65e MCC |
748 | } |
749 | ||
543323bc | 750 | static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p) |
1e6dd65e | 751 | { |
543323bc | 752 | struct vivi_fh *fh = priv; |
1e6dd65e | 753 | |
c820cc45 MCC |
754 | return (videobuf_querybuf(&fh->vb_vidq, p)); |
755 | } | |
1e6dd65e | 756 | |
543323bc | 757 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
c820cc45 | 758 | { |
543323bc | 759 | struct vivi_fh *fh = priv; |
1e6dd65e | 760 | |
c820cc45 MCC |
761 | return (videobuf_qbuf(&fh->vb_vidq, p)); |
762 | } | |
1e6dd65e | 763 | |
543323bc | 764 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
c820cc45 | 765 | { |
543323bc | 766 | struct vivi_fh *fh = priv; |
1e6dd65e | 767 | |
c820cc45 MCC |
768 | return (videobuf_dqbuf(&fh->vb_vidq, p, |
769 | file->f_flags & O_NONBLOCK)); | |
770 | } | |
1e6dd65e | 771 | |
0dfa9abd | 772 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
543323bc | 773 | static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf) |
c820cc45 | 774 | { |
543323bc | 775 | struct vivi_fh *fh = priv; |
4ceb04e1 | 776 | |
543323bc | 777 | return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8); |
c820cc45 MCC |
778 | } |
779 | #endif | |
1e6dd65e | 780 | |
dc46ace1 | 781 | static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) |
c820cc45 | 782 | { |
543323bc | 783 | struct vivi_fh *fh = priv; |
1e6dd65e | 784 | |
c820cc45 MCC |
785 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
786 | return -EINVAL; | |
787 | if (i != fh->type) | |
788 | return -EINVAL; | |
1e6dd65e | 789 | |
ba32bd95 | 790 | return videobuf_streamon(&fh->vb_vidq); |
c820cc45 | 791 | } |
1e6dd65e | 792 | |
dc46ace1 | 793 | static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) |
c820cc45 | 794 | { |
543323bc | 795 | struct vivi_fh *fh = priv; |
1e6dd65e | 796 | |
c820cc45 MCC |
797 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
798 | return -EINVAL; | |
799 | if (i != fh->type) | |
800 | return -EINVAL; | |
1e6dd65e | 801 | |
ba32bd95 | 802 | return videobuf_streamoff(&fh->vb_vidq); |
c820cc45 MCC |
803 | } |
804 | ||
543323bc | 805 | static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *i) |
c820cc45 | 806 | { |
c820cc45 MCC |
807 | return 0; |
808 | } | |
1e6dd65e | 809 | |
c820cc45 | 810 | /* only one input in this sample driver */ |
543323bc | 811 | static int vidioc_enum_input(struct file *file, void *priv, |
c820cc45 MCC |
812 | struct v4l2_input *inp) |
813 | { | |
814 | if (inp->index != 0) | |
815 | return -EINVAL; | |
1e6dd65e | 816 | |
c820cc45 | 817 | inp->type = V4L2_INPUT_TYPE_CAMERA; |
784c668b | 818 | inp->std = V4L2_STD_525_60; |
543323bc | 819 | strcpy(inp->name, "Camera"); |
1e6dd65e | 820 | |
c820cc45 MCC |
821 | return (0); |
822 | } | |
1e6dd65e | 823 | |
543323bc | 824 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) |
c820cc45 MCC |
825 | { |
826 | *i = 0; | |
1e6dd65e | 827 | |
c820cc45 MCC |
828 | return (0); |
829 | } | |
543323bc | 830 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) |
c820cc45 MCC |
831 | { |
832 | if (i > 0) | |
833 | return -EINVAL; | |
1e6dd65e | 834 | |
c820cc45 MCC |
835 | return (0); |
836 | } | |
1e6dd65e MCC |
837 | |
838 | /* --- controls ---------------------------------------------- */ | |
543323bc MCC |
839 | static int vidioc_queryctrl(struct file *file, void *priv, |
840 | struct v4l2_queryctrl *qc) | |
c820cc45 MCC |
841 | { |
842 | int i; | |
1e6dd65e | 843 | |
c820cc45 MCC |
844 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
845 | if (qc->id && qc->id == vivi_qctrl[i].id) { | |
846 | memcpy(qc, &(vivi_qctrl[i]), | |
847 | sizeof(*qc)); | |
848 | return (0); | |
849 | } | |
1e6dd65e | 850 | |
c820cc45 MCC |
851 | return -EINVAL; |
852 | } | |
1e6dd65e | 853 | |
543323bc MCC |
854 | static int vidioc_g_ctrl(struct file *file, void *priv, |
855 | struct v4l2_control *ctrl) | |
c820cc45 MCC |
856 | { |
857 | int i; | |
1e6dd65e | 858 | |
c820cc45 MCC |
859 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
860 | if (ctrl->id == vivi_qctrl[i].id) { | |
543323bc | 861 | ctrl->value = qctl_regs[i]; |
c820cc45 MCC |
862 | return (0); |
863 | } | |
1e6dd65e | 864 | |
c820cc45 | 865 | return -EINVAL; |
1e6dd65e | 866 | } |
543323bc | 867 | static int vidioc_s_ctrl(struct file *file, void *priv, |
c820cc45 | 868 | struct v4l2_control *ctrl) |
1e6dd65e | 869 | { |
c820cc45 MCC |
870 | int i; |
871 | ||
872 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
873 | if (ctrl->id == vivi_qctrl[i].id) { | |
543323bc MCC |
874 | if (ctrl->value < vivi_qctrl[i].minimum |
875 | || ctrl->value > vivi_qctrl[i].maximum) { | |
c820cc45 MCC |
876 | return (-ERANGE); |
877 | } | |
543323bc | 878 | qctl_regs[i] = ctrl->value; |
c820cc45 MCC |
879 | return (0); |
880 | } | |
881 | return -EINVAL; | |
1e6dd65e MCC |
882 | } |
883 | ||
884 | /* ------------------------------------------------------------------ | |
885 | File operations for the device | |
886 | ------------------------------------------------------------------*/ | |
887 | ||
888 | #define line_buf_size(norm) (norm_maxw(norm)*(format.depth+7)/8) | |
889 | ||
890 | static int vivi_open(struct inode *inode, struct file *file) | |
891 | { | |
892 | int minor = iminor(inode); | |
a991f44b | 893 | struct vivi_dev *dev; |
63b79cfa | 894 | struct vivi_fh *fh = NULL; |
1e6dd65e | 895 | int i; |
aa9dbac4 | 896 | int retval = 0; |
1e6dd65e | 897 | |
543323bc | 898 | printk(KERN_DEBUG "vivi: open called (minor=%d)\n", minor); |
1e6dd65e | 899 | |
a991f44b | 900 | list_for_each_entry(dev, &vivi_devlist, vivi_devlist) |
f905c442 | 901 | if (dev->vfd->minor == minor) |
a991f44b TP |
902 | goto found; |
903 | return -ENODEV; | |
c820cc45 | 904 | |
543323bc | 905 | found: |
aa9dbac4 | 906 | mutex_lock(&dev->mutex); |
1e6dd65e MCC |
907 | dev->users++; |
908 | ||
aa9dbac4 BP |
909 | if (dev->users > 1) { |
910 | dev->users--; | |
911 | retval = -EBUSY; | |
912 | goto unlock; | |
913 | } | |
914 | ||
6c2f9901 | 915 | dprintk(dev, 1, "open minor=%d type=%s users=%d\n", minor, |
a991f44b | 916 | v4l2_type_names[V4L2_BUF_TYPE_VIDEO_CAPTURE], dev->users); |
1e6dd65e MCC |
917 | |
918 | /* allocate + initialize per filehandle data */ | |
543323bc | 919 | fh = kzalloc(sizeof(*fh), GFP_KERNEL); |
1e6dd65e MCC |
920 | if (NULL == fh) { |
921 | dev->users--; | |
aa9dbac4 BP |
922 | retval = -ENOMEM; |
923 | goto unlock; | |
1e6dd65e | 924 | } |
aa9dbac4 BP |
925 | unlock: |
926 | mutex_unlock(&dev->mutex); | |
927 | if (retval) | |
928 | return retval; | |
1e6dd65e MCC |
929 | |
930 | file->private_data = fh; | |
931 | fh->dev = dev; | |
c820cc45 | 932 | |
1e6dd65e MCC |
933 | fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
934 | fh->fmt = &format; | |
935 | fh->width = 640; | |
936 | fh->height = 480; | |
937 | ||
938 | /* Put all controls at a sane state */ | |
939 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
543323bc | 940 | qctl_regs[i] = vivi_qctrl[i].default_value; |
1e6dd65e MCC |
941 | |
942 | /* Resets frame counters */ | |
543323bc MCC |
943 | dev->h = 0; |
944 | dev->m = 0; | |
945 | dev->s = 0; | |
dfd8c04e | 946 | dev->ms = 0; |
543323bc MCC |
947 | dev->mv_count = 0; |
948 | dev->jiffies = jiffies; | |
949 | sprintf(dev->timestr, "%02d:%02d:%02d:%03d", | |
dfd8c04e | 950 | dev->h, dev->m, dev->s, dev->ms); |
1e6dd65e | 951 | |
5a037706 | 952 | videobuf_queue_vmalloc_init(&fh->vb_vidq, &vivi_video_qops, |
55862ac9 | 953 | NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED, |
543323bc | 954 | sizeof(struct vivi_buffer), fh); |
1e6dd65e | 955 | |
78718e5d BP |
956 | vivi_start_thread(fh); |
957 | ||
1e6dd65e MCC |
958 | return 0; |
959 | } | |
960 | ||
961 | static ssize_t | |
962 | vivi_read(struct file *file, char __user *data, size_t count, loff_t *ppos) | |
963 | { | |
543323bc | 964 | struct vivi_fh *fh = file->private_data; |
1e6dd65e | 965 | |
543323bc | 966 | if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
acb09af4 | 967 | return videobuf_read_stream(&fh->vb_vidq, data, count, ppos, 0, |
1e6dd65e MCC |
968 | file->f_flags & O_NONBLOCK); |
969 | } | |
970 | return 0; | |
971 | } | |
972 | ||
973 | static unsigned int | |
974 | vivi_poll(struct file *file, struct poll_table_struct *wait) | |
975 | { | |
c820cc45 | 976 | struct vivi_fh *fh = file->private_data; |
6c2f9901 | 977 | struct vivi_dev *dev = fh->dev; |
85c7c70b | 978 | struct videobuf_queue *q = &fh->vb_vidq; |
1e6dd65e | 979 | |
7e28adb2 | 980 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e MCC |
981 | |
982 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) | |
983 | return POLLERR; | |
984 | ||
85c7c70b | 985 | return videobuf_poll_stream(file, q, wait); |
1e6dd65e MCC |
986 | } |
987 | ||
f905c442 | 988 | static int vivi_close(struct inode *inode, struct file *file) |
1e6dd65e | 989 | { |
c820cc45 MCC |
990 | struct vivi_fh *fh = file->private_data; |
991 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
992 | struct vivi_dmaqueue *vidq = &dev->vidq; |
993 | ||
994 | int minor = iminor(inode); | |
995 | ||
996 | vivi_stop_thread(vidq); | |
053fcb60 | 997 | videobuf_stop(&fh->vb_vidq); |
1e6dd65e MCC |
998 | videobuf_mmap_free(&fh->vb_vidq); |
999 | ||
55712ff7 | 1000 | kfree(fh); |
1e6dd65e | 1001 | |
aa9dbac4 | 1002 | mutex_lock(&dev->mutex); |
1e6dd65e | 1003 | dev->users--; |
aa9dbac4 | 1004 | mutex_unlock(&dev->mutex); |
1e6dd65e | 1005 | |
6c2f9901 MCC |
1006 | dprintk(dev, 1, "close called (minor=%d, users=%d)\n", |
1007 | minor, dev->users); | |
1e6dd65e MCC |
1008 | |
1009 | return 0; | |
1010 | } | |
1011 | ||
55712ff7 | 1012 | static int vivi_release(void) |
f905c442 | 1013 | { |
55712ff7 MCC |
1014 | struct vivi_dev *dev; |
1015 | struct list_head *list; | |
1016 | ||
1017 | while (!list_empty(&vivi_devlist)) { | |
1018 | list = vivi_devlist.next; | |
1019 | list_del(list); | |
1020 | dev = list_entry(list, struct vivi_dev, vivi_devlist); | |
f905c442 | 1021 | |
745271ae | 1022 | if (-1 != dev->vfd->minor) { |
55712ff7 | 1023 | video_unregister_device(dev->vfd); |
745271ae | 1024 | printk(KERN_INFO "%s: /dev/video%d unregistered.\n", |
584ce48d | 1025 | VIVI_MODULE_NAME, dev->vfd->minor); |
745271ae | 1026 | } else { |
55712ff7 | 1027 | video_device_release(dev->vfd); |
745271ae | 1028 | printk(KERN_INFO "%s: /dev/video%d released.\n", |
584ce48d | 1029 | VIVI_MODULE_NAME, dev->vfd->minor); |
745271ae | 1030 | } |
55712ff7 MCC |
1031 | |
1032 | kfree(dev); | |
1033 | } | |
f905c442 MCC |
1034 | |
1035 | return 0; | |
1036 | } | |
1037 | ||
543323bc | 1038 | static int vivi_mmap(struct file *file, struct vm_area_struct *vma) |
1e6dd65e | 1039 | { |
6c2f9901 MCC |
1040 | struct vivi_fh *fh = file->private_data; |
1041 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
1042 | int ret; |
1043 | ||
6c2f9901 | 1044 | dprintk(dev, 1, "mmap called, vma=0x%08lx\n", (unsigned long)vma); |
1e6dd65e | 1045 | |
543323bc | 1046 | ret = videobuf_mmap_mapper(&fh->vb_vidq, vma); |
1e6dd65e | 1047 | |
6c2f9901 | 1048 | dprintk(dev, 1, "vma start=0x%08lx, size=%ld, ret=%d\n", |
1e6dd65e MCC |
1049 | (unsigned long)vma->vm_start, |
1050 | (unsigned long)vma->vm_end-(unsigned long)vma->vm_start, | |
1051 | ret); | |
1052 | ||
1053 | return ret; | |
1054 | } | |
1055 | ||
fa027c2a | 1056 | static const struct file_operations vivi_fops = { |
1e6dd65e MCC |
1057 | .owner = THIS_MODULE, |
1058 | .open = vivi_open, | |
f905c442 | 1059 | .release = vivi_close, |
1e6dd65e MCC |
1060 | .read = vivi_read, |
1061 | .poll = vivi_poll, | |
c820cc45 | 1062 | .ioctl = video_ioctl2, /* V4L2 ioctl handler */ |
fbde31d5 | 1063 | .compat_ioctl = v4l_compat_ioctl32, |
5a037706 | 1064 | .mmap = vivi_mmap, |
1e6dd65e MCC |
1065 | .llseek = no_llseek, |
1066 | }; | |
1067 | ||
f905c442 | 1068 | static struct video_device vivi_template = { |
c820cc45 | 1069 | .name = "vivi", |
1e6dd65e | 1070 | .type = VID_TYPE_CAPTURE, |
1e6dd65e MCC |
1071 | .fops = &vivi_fops, |
1072 | .minor = -1, | |
f905c442 | 1073 | .release = video_device_release, |
c820cc45 MCC |
1074 | |
1075 | .vidioc_querycap = vidioc_querycap, | |
78b526a4 HV |
1076 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, |
1077 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
1078 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
1079 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
c820cc45 MCC |
1080 | .vidioc_reqbufs = vidioc_reqbufs, |
1081 | .vidioc_querybuf = vidioc_querybuf, | |
1082 | .vidioc_qbuf = vidioc_qbuf, | |
1083 | .vidioc_dqbuf = vidioc_dqbuf, | |
1084 | .vidioc_s_std = vidioc_s_std, | |
1085 | .vidioc_enum_input = vidioc_enum_input, | |
1086 | .vidioc_g_input = vidioc_g_input, | |
1087 | .vidioc_s_input = vidioc_s_input, | |
1088 | .vidioc_queryctrl = vidioc_queryctrl, | |
1089 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
1090 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
1091 | .vidioc_streamon = vidioc_streamon, | |
1092 | .vidioc_streamoff = vidioc_streamoff, | |
0dfa9abd | 1093 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
c820cc45 MCC |
1094 | .vidiocgmbuf = vidiocgmbuf, |
1095 | #endif | |
784c668b | 1096 | .tvnorms = V4L2_STD_525_60, |
e75f9cee | 1097 | .current_norm = V4L2_STD_NTSC_M, |
1e6dd65e | 1098 | }; |
c820cc45 | 1099 | /* ----------------------------------------------------------------- |
1e6dd65e MCC |
1100 | Initialization and module stuff |
1101 | ------------------------------------------------------------------*/ | |
1102 | ||
1103 | static int __init vivi_init(void) | |
1104 | { | |
55712ff7 | 1105 | int ret = -ENOMEM, i; |
1e6dd65e | 1106 | struct vivi_dev *dev; |
f905c442 | 1107 | struct video_device *vfd; |
1e6dd65e | 1108 | |
55712ff7 MCC |
1109 | for (i = 0; i < n_devs; i++) { |
1110 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); | |
1111 | if (NULL == dev) | |
1112 | break; | |
1e6dd65e | 1113 | |
55712ff7 | 1114 | list_add_tail(&dev->vivi_devlist, &vivi_devlist); |
1e6dd65e | 1115 | |
55712ff7 MCC |
1116 | /* init video dma queues */ |
1117 | INIT_LIST_HEAD(&dev->vidq.active); | |
55712ff7 | 1118 | init_waitqueue_head(&dev->vidq.wq); |
1e6dd65e | 1119 | |
55712ff7 | 1120 | /* initialize locks */ |
55862ac9 | 1121 | spin_lock_init(&dev->slock); |
aa9dbac4 | 1122 | mutex_init(&dev->mutex); |
1e6dd65e | 1123 | |
55712ff7 MCC |
1124 | vfd = video_device_alloc(); |
1125 | if (NULL == vfd) | |
1126 | break; | |
1127 | ||
1128 | *vfd = vivi_template; | |
1129 | ||
1130 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr); | |
1131 | if (ret < 0) | |
1132 | break; | |
1133 | ||
1134 | snprintf(vfd->name, sizeof(vfd->name), "%s (%i)", | |
1135 | vivi_template.name, vfd->minor); | |
f905c442 | 1136 | |
55712ff7 MCC |
1137 | if (video_nr >= 0) |
1138 | video_nr++; | |
f905c442 | 1139 | |
55712ff7 | 1140 | dev->vfd = vfd; |
745271ae | 1141 | printk(KERN_INFO "%s: V4L2 device registered as /dev/video%d\n", |
584ce48d | 1142 | VIVI_MODULE_NAME, vfd->minor); |
55712ff7 | 1143 | } |
f905c442 | 1144 | |
55712ff7 MCC |
1145 | if (ret < 0) { |
1146 | vivi_release(); | |
1147 | printk(KERN_INFO "Error %d while loading vivi driver\n", ret); | |
1148 | } else | |
1149 | printk(KERN_INFO "Video Technology Magazine Virtual Video " | |
745271ae CK |
1150 | "Capture Board ver %u.%u.%u successfully loaded.\n", |
1151 | (VIVI_VERSION >> 16) & 0xFF, (VIVI_VERSION >> 8) & 0xFF, | |
1152 | VIVI_VERSION & 0xFF); | |
1e6dd65e MCC |
1153 | return ret; |
1154 | } | |
1155 | ||
1156 | static void __exit vivi_exit(void) | |
1157 | { | |
55712ff7 | 1158 | vivi_release(); |
1e6dd65e MCC |
1159 | } |
1160 | ||
1161 | module_init(vivi_init); | |
1162 | module_exit(vivi_exit); | |
c820cc45 MCC |
1163 | |
1164 | MODULE_DESCRIPTION("Video Technology Magazine Virtual Video Capture Board"); | |
1165 | MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol"); | |
1166 | MODULE_LICENSE("Dual BSD/GPL"); | |
1167 | ||
1168 | module_param(video_nr, int, 0); | |
55712ff7 | 1169 | MODULE_PARM_DESC(video_nr, "video iminor start number"); |
c820cc45 | 1170 | |
55712ff7 MCC |
1171 | module_param(n_devs, int, 0); |
1172 | MODULE_PARM_DESC(n_devs, "number of video devices to create"); | |
c820cc45 | 1173 | |
8996b3f3 | 1174 | module_param_named(debug, vivi_template.debug, int, 0444); |
55712ff7 | 1175 | MODULE_PARM_DESC(debug, "activates debug info"); |
c820cc45 | 1176 | |
55712ff7 MCC |
1177 | module_param(vid_limit, int, 0644); |
1178 | MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes"); |