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 | * | |
e007a325 PO |
10 | * Conversion to videobuf2 by Pawel Osciak & Marek Szyprowski |
11 | * Copyright (c) 2010 Samsung Electronics | |
12 | * | |
1e6dd65e MCC |
13 | * This program is free software; you can redistribute it and/or modify |
14 | * it under the terms of the BSD Licence, GNU General Public License | |
15 | * as published by the Free Software Foundation; either version 2 of the | |
16 | * License, or (at your option) any later version | |
17 | */ | |
18 | #include <linux/module.h> | |
1e6dd65e | 19 | #include <linux/errno.h> |
1e6dd65e | 20 | #include <linux/kernel.h> |
1e6dd65e MCC |
21 | #include <linux/init.h> |
22 | #include <linux/sched.h> | |
6b46c397 | 23 | #include <linux/slab.h> |
730947bc | 24 | #include <linux/font.h> |
51b54029 | 25 | #include <linux/mutex.h> |
1e6dd65e | 26 | #include <linux/videodev2.h> |
1e6dd65e | 27 | #include <linux/kthread.h> |
7dfb7103 | 28 | #include <linux/freezer.h> |
e007a325 | 29 | #include <media/videobuf2-vmalloc.h> |
5ab6c9af HV |
30 | #include <media/v4l2-device.h> |
31 | #include <media/v4l2-ioctl.h> | |
7e996afa | 32 | #include <media/v4l2-ctrls.h> |
2e4784d0 | 33 | #include <media/v4l2-fh.h> |
c7a52f8d | 34 | #include <media/v4l2-event.h> |
730947bc | 35 | #include <media/v4l2-common.h> |
1e6dd65e | 36 | |
584ce48d | 37 | #define VIVI_MODULE_NAME "vivi" |
745271ae | 38 | |
1e6dd65e MCC |
39 | /* Wake up at about 30 fps */ |
40 | #define WAKE_NUMERATOR 30 | |
41 | #define WAKE_DENOMINATOR 1001 | |
42 | #define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */ | |
43 | ||
730947bc HV |
44 | #define MAX_WIDTH 1920 |
45 | #define MAX_HEIGHT 1200 | |
46 | ||
1990d50b | 47 | #define VIVI_VERSION "0.8.1" |
1e6dd65e | 48 | |
5ab6c9af HV |
49 | MODULE_DESCRIPTION("Video Technology Magazine Virtual Video Capture Board"); |
50 | MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol"); | |
51 | MODULE_LICENSE("Dual BSD/GPL"); | |
1990d50b | 52 | MODULE_VERSION(VIVI_VERSION); |
5ab6c9af HV |
53 | |
54 | static unsigned video_nr = -1; | |
55 | module_param(video_nr, uint, 0644); | |
56 | MODULE_PARM_DESC(video_nr, "videoX start number, -1 is autodetect"); | |
57 | ||
58 | static unsigned n_devs = 1; | |
59 | module_param(n_devs, uint, 0644); | |
60 | MODULE_PARM_DESC(n_devs, "number of video devices to create"); | |
61 | ||
62 | static unsigned debug; | |
63 | module_param(debug, uint, 0644); | |
64 | MODULE_PARM_DESC(debug, "activates debug info"); | |
65 | ||
66 | static unsigned int vid_limit = 16; | |
67 | module_param(vid_limit, uint, 0644); | |
68 | MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes"); | |
69 | ||
730947bc HV |
70 | /* Global font descriptor */ |
71 | static const u8 *font8x16; | |
1e6dd65e | 72 | |
5ab6c9af HV |
73 | #define dprintk(dev, level, fmt, arg...) \ |
74 | v4l2_dbg(level, debug, &dev->v4l2_dev, fmt, ## arg) | |
1e6dd65e MCC |
75 | |
76 | /* ------------------------------------------------------------------ | |
77 | Basic structures | |
78 | ------------------------------------------------------------------*/ | |
79 | ||
80 | struct vivi_fmt { | |
81 | char *name; | |
82 | u32 fourcc; /* v4l2 format id */ | |
83 | int depth; | |
84 | }; | |
85 | ||
d891f475 MD |
86 | static struct vivi_fmt formats[] = { |
87 | { | |
88 | .name = "4:2:2, packed, YUYV", | |
89 | .fourcc = V4L2_PIX_FMT_YUYV, | |
90 | .depth = 16, | |
91 | }, | |
fca36bab MD |
92 | { |
93 | .name = "4:2:2, packed, UYVY", | |
94 | .fourcc = V4L2_PIX_FMT_UYVY, | |
95 | .depth = 16, | |
96 | }, | |
3d51dca2 HV |
97 | { |
98 | .name = "4:2:2, packed, YVYU", | |
99 | .fourcc = V4L2_PIX_FMT_YVYU, | |
100 | .depth = 16, | |
101 | }, | |
102 | { | |
103 | .name = "4:2:2, packed, VYUY", | |
104 | .fourcc = V4L2_PIX_FMT_VYUY, | |
105 | .depth = 16, | |
106 | }, | |
aeadb5d4 MD |
107 | { |
108 | .name = "RGB565 (LE)", | |
109 | .fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */ | |
110 | .depth = 16, | |
111 | }, | |
112 | { | |
113 | .name = "RGB565 (BE)", | |
114 | .fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */ | |
115 | .depth = 16, | |
116 | }, | |
def52393 MD |
117 | { |
118 | .name = "RGB555 (LE)", | |
119 | .fourcc = V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */ | |
120 | .depth = 16, | |
121 | }, | |
122 | { | |
123 | .name = "RGB555 (BE)", | |
124 | .fourcc = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */ | |
125 | .depth = 16, | |
126 | }, | |
3d51dca2 HV |
127 | { |
128 | .name = "RGB24 (LE)", | |
129 | .fourcc = V4L2_PIX_FMT_RGB24, /* rgb */ | |
130 | .depth = 24, | |
131 | }, | |
132 | { | |
133 | .name = "RGB24 (BE)", | |
134 | .fourcc = V4L2_PIX_FMT_BGR24, /* bgr */ | |
135 | .depth = 24, | |
136 | }, | |
137 | { | |
138 | .name = "RGB32 (LE)", | |
139 | .fourcc = V4L2_PIX_FMT_RGB32, /* argb */ | |
140 | .depth = 32, | |
141 | }, | |
142 | { | |
143 | .name = "RGB32 (BE)", | |
144 | .fourcc = V4L2_PIX_FMT_BGR32, /* bgra */ | |
145 | .depth = 32, | |
146 | }, | |
1e6dd65e MCC |
147 | }; |
148 | ||
d891f475 MD |
149 | static struct vivi_fmt *get_format(struct v4l2_format *f) |
150 | { | |
151 | struct vivi_fmt *fmt; | |
152 | unsigned int k; | |
153 | ||
154 | for (k = 0; k < ARRAY_SIZE(formats); k++) { | |
155 | fmt = &formats[k]; | |
156 | if (fmt->fourcc == f->fmt.pix.pixelformat) | |
157 | break; | |
158 | } | |
159 | ||
160 | if (k == ARRAY_SIZE(formats)) | |
161 | return NULL; | |
162 | ||
163 | return &formats[k]; | |
164 | } | |
165 | ||
1e6dd65e MCC |
166 | /* buffer for one video frame */ |
167 | struct vivi_buffer { | |
168 | /* common v4l buffer stuff -- must be first */ | |
e007a325 PO |
169 | struct vb2_buffer vb; |
170 | struct list_head list; | |
1e6dd65e | 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; | |
5ab6c9af | 189 | struct v4l2_device v4l2_dev; |
7e996afa | 190 | struct v4l2_ctrl_handler ctrl_handler; |
70bd97ae | 191 | struct video_device vdev; |
1e6dd65e | 192 | |
730947bc | 193 | /* controls */ |
7e996afa HV |
194 | struct v4l2_ctrl *brightness; |
195 | struct v4l2_ctrl *contrast; | |
196 | struct v4l2_ctrl *saturation; | |
197 | struct v4l2_ctrl *hue; | |
a1c894fb HV |
198 | struct { |
199 | /* autogain/gain cluster */ | |
200 | struct v4l2_ctrl *autogain; | |
201 | struct v4l2_ctrl *gain; | |
202 | }; | |
7e996afa | 203 | struct v4l2_ctrl *volume; |
7088f4df | 204 | struct v4l2_ctrl *alpha; |
7e996afa HV |
205 | struct v4l2_ctrl *button; |
206 | struct v4l2_ctrl *boolean; | |
207 | struct v4l2_ctrl *int32; | |
208 | struct v4l2_ctrl *int64; | |
209 | struct v4l2_ctrl *menu; | |
210 | struct v4l2_ctrl *string; | |
b6d17a56 | 211 | struct v4l2_ctrl *bitmask; |
c520331a | 212 | struct v4l2_ctrl *int_menu; |
730947bc | 213 | |
55862ac9 | 214 | spinlock_t slock; |
aa9dbac4 | 215 | struct mutex mutex; |
1e6dd65e | 216 | |
1e6dd65e MCC |
217 | struct vivi_dmaqueue vidq; |
218 | ||
219 | /* Several counters */ | |
730947bc | 220 | unsigned ms; |
dfd8c04e | 221 | unsigned long jiffies; |
7e996afa | 222 | unsigned button_pressed; |
025341d4 MCC |
223 | |
224 | int mv_count; /* Controls bars movement */ | |
e164b58a MCC |
225 | |
226 | /* Input Number */ | |
227 | int input; | |
c41ee24b | 228 | |
1e6dd65e MCC |
229 | /* video capture */ |
230 | struct vivi_fmt *fmt; | |
543323bc | 231 | unsigned int width, height; |
e007a325 | 232 | struct vb2_queue vb_vidq; |
e007a325 | 233 | unsigned int field_count; |
1e6dd65e | 234 | |
3d51dca2 HV |
235 | u8 bars[9][3]; |
236 | u8 line[MAX_WIDTH * 8]; | |
237 | unsigned int pixelsize; | |
7088f4df | 238 | u8 alpha_component; |
1e6dd65e MCC |
239 | }; |
240 | ||
241 | /* ------------------------------------------------------------------ | |
242 | DMA and thread functions | |
243 | ------------------------------------------------------------------*/ | |
244 | ||
245 | /* Bars and Colors should match positions */ | |
246 | ||
247 | enum colors { | |
248 | WHITE, | |
730947bc | 249 | AMBER, |
1e6dd65e MCC |
250 | CYAN, |
251 | GREEN, | |
252 | MAGENTA, | |
253 | RED, | |
543323bc MCC |
254 | BLUE, |
255 | BLACK, | |
730947bc | 256 | TEXT_BLACK, |
1e6dd65e MCC |
257 | }; |
258 | ||
730947bc | 259 | /* R G B */ |
e164b58a | 260 | #define COLOR_WHITE {204, 204, 204} |
730947bc HV |
261 | #define COLOR_AMBER {208, 208, 0} |
262 | #define COLOR_CYAN { 0, 206, 206} | |
e164b58a MCC |
263 | #define COLOR_GREEN { 0, 239, 0} |
264 | #define COLOR_MAGENTA {239, 0, 239} | |
265 | #define COLOR_RED {205, 0, 0} | |
266 | #define COLOR_BLUE { 0, 0, 255} | |
267 | #define COLOR_BLACK { 0, 0, 0} | |
268 | ||
269 | struct bar_std { | |
730947bc | 270 | u8 bar[9][3]; |
e164b58a MCC |
271 | }; |
272 | ||
273 | /* Maximum number of bars are 10 - otherwise, the input print code | |
274 | should be modified */ | |
275 | static struct bar_std bars[] = { | |
276 | { /* Standard ITU-R color bar sequence */ | |
730947bc HV |
277 | { COLOR_WHITE, COLOR_AMBER, COLOR_CYAN, COLOR_GREEN, |
278 | COLOR_MAGENTA, COLOR_RED, COLOR_BLUE, COLOR_BLACK, COLOR_BLACK } | |
e164b58a | 279 | }, { |
730947bc HV |
280 | { COLOR_WHITE, COLOR_AMBER, COLOR_BLACK, COLOR_WHITE, |
281 | COLOR_AMBER, COLOR_BLACK, COLOR_WHITE, COLOR_AMBER, COLOR_BLACK } | |
e164b58a | 282 | }, { |
730947bc HV |
283 | { COLOR_WHITE, COLOR_CYAN, COLOR_BLACK, COLOR_WHITE, |
284 | COLOR_CYAN, COLOR_BLACK, COLOR_WHITE, COLOR_CYAN, COLOR_BLACK } | |
e164b58a | 285 | }, { |
730947bc HV |
286 | { COLOR_WHITE, COLOR_GREEN, COLOR_BLACK, COLOR_WHITE, |
287 | COLOR_GREEN, COLOR_BLACK, COLOR_WHITE, COLOR_GREEN, COLOR_BLACK } | |
e164b58a | 288 | }, |
1e6dd65e MCC |
289 | }; |
290 | ||
e164b58a MCC |
291 | #define NUM_INPUTS ARRAY_SIZE(bars) |
292 | ||
543323bc MCC |
293 | #define TO_Y(r, g, b) \ |
294 | (((16829 * r + 33039 * g + 6416 * b + 32768) >> 16) + 16) | |
1e6dd65e | 295 | /* RGB to V(Cr) Color transform */ |
543323bc MCC |
296 | #define TO_V(r, g, b) \ |
297 | (((28784 * r - 24103 * g - 4681 * b + 32768) >> 16) + 128) | |
1e6dd65e | 298 | /* RGB to U(Cb) Color transform */ |
543323bc MCC |
299 | #define TO_U(r, g, b) \ |
300 | (((-9714 * r - 19070 * g + 28784 * b + 32768) >> 16) + 128) | |
1e6dd65e | 301 | |
c285addb | 302 | /* precalculate color bar values to speed up rendering */ |
730947bc | 303 | static void precalculate_bars(struct vivi_dev *dev) |
c285addb | 304 | { |
730947bc | 305 | u8 r, g, b; |
c285addb MCC |
306 | int k, is_yuv; |
307 | ||
730947bc HV |
308 | for (k = 0; k < 9; k++) { |
309 | r = bars[dev->input].bar[k][0]; | |
310 | g = bars[dev->input].bar[k][1]; | |
311 | b = bars[dev->input].bar[k][2]; | |
c285addb MCC |
312 | is_yuv = 0; |
313 | ||
730947bc | 314 | switch (dev->fmt->fourcc) { |
c285addb MCC |
315 | case V4L2_PIX_FMT_YUYV: |
316 | case V4L2_PIX_FMT_UYVY: | |
3d51dca2 HV |
317 | case V4L2_PIX_FMT_YVYU: |
318 | case V4L2_PIX_FMT_VYUY: | |
c285addb MCC |
319 | is_yuv = 1; |
320 | break; | |
321 | case V4L2_PIX_FMT_RGB565: | |
322 | case V4L2_PIX_FMT_RGB565X: | |
323 | r >>= 3; | |
324 | g >>= 2; | |
325 | b >>= 3; | |
326 | break; | |
327 | case V4L2_PIX_FMT_RGB555: | |
328 | case V4L2_PIX_FMT_RGB555X: | |
329 | r >>= 3; | |
330 | g >>= 3; | |
331 | b >>= 3; | |
332 | break; | |
3d51dca2 HV |
333 | case V4L2_PIX_FMT_RGB24: |
334 | case V4L2_PIX_FMT_BGR24: | |
335 | case V4L2_PIX_FMT_RGB32: | |
336 | case V4L2_PIX_FMT_BGR32: | |
337 | break; | |
c285addb MCC |
338 | } |
339 | ||
340 | if (is_yuv) { | |
730947bc HV |
341 | dev->bars[k][0] = TO_Y(r, g, b); /* Luma */ |
342 | dev->bars[k][1] = TO_U(r, g, b); /* Cb */ | |
343 | dev->bars[k][2] = TO_V(r, g, b); /* Cr */ | |
c285addb | 344 | } else { |
730947bc HV |
345 | dev->bars[k][0] = r; |
346 | dev->bars[k][1] = g; | |
347 | dev->bars[k][2] = b; | |
c285addb MCC |
348 | } |
349 | } | |
c285addb MCC |
350 | } |
351 | ||
e164b58a MCC |
352 | #define TSTAMP_MIN_Y 24 |
353 | #define TSTAMP_MAX_Y (TSTAMP_MIN_Y + 15) | |
354 | #define TSTAMP_INPUT_X 10 | |
355 | #define TSTAMP_MIN_X (54 + TSTAMP_INPUT_X) | |
1e6dd65e | 356 | |
3d51dca2 HV |
357 | /* 'odd' is true for pixels 1, 3, 5, etc. and false for pixels 0, 2, 4, etc. */ |
358 | static void gen_twopix(struct vivi_dev *dev, u8 *buf, int colorpos, bool odd) | |
74d7c5af | 359 | { |
730947bc | 360 | u8 r_y, g_u, b_v; |
7088f4df | 361 | u8 alpha = dev->alpha_component; |
74d7c5af | 362 | int color; |
730947bc | 363 | u8 *p; |
74d7c5af | 364 | |
730947bc HV |
365 | r_y = dev->bars[colorpos][0]; /* R or precalculated Y */ |
366 | g_u = dev->bars[colorpos][1]; /* G or precalculated U */ | |
367 | b_v = dev->bars[colorpos][2]; /* B or precalculated V */ | |
74d7c5af | 368 | |
3d51dca2 | 369 | for (color = 0; color < dev->pixelsize; color++) { |
74d7c5af MD |
370 | p = buf + color; |
371 | ||
730947bc | 372 | switch (dev->fmt->fourcc) { |
d891f475 MD |
373 | case V4L2_PIX_FMT_YUYV: |
374 | switch (color) { | |
375 | case 0: | |
d891f475 MD |
376 | *p = r_y; |
377 | break; | |
378 | case 1: | |
3d51dca2 | 379 | *p = odd ? b_v : g_u; |
d891f475 MD |
380 | break; |
381 | } | |
74d7c5af | 382 | break; |
fca36bab MD |
383 | case V4L2_PIX_FMT_UYVY: |
384 | switch (color) { | |
3d51dca2 HV |
385 | case 0: |
386 | *p = odd ? b_v : g_u; | |
387 | break; | |
fca36bab | 388 | case 1: |
fca36bab MD |
389 | *p = r_y; |
390 | break; | |
3d51dca2 HV |
391 | } |
392 | break; | |
393 | case V4L2_PIX_FMT_YVYU: | |
394 | switch (color) { | |
395 | case 0: | |
396 | *p = r_y; | |
397 | break; | |
398 | case 1: | |
399 | *p = odd ? g_u : b_v; | |
400 | break; | |
401 | } | |
402 | break; | |
403 | case V4L2_PIX_FMT_VYUY: | |
404 | switch (color) { | |
fca36bab | 405 | case 0: |
3d51dca2 | 406 | *p = odd ? g_u : b_v; |
fca36bab | 407 | break; |
3d51dca2 HV |
408 | case 1: |
409 | *p = r_y; | |
fca36bab MD |
410 | break; |
411 | } | |
412 | break; | |
aeadb5d4 MD |
413 | case V4L2_PIX_FMT_RGB565: |
414 | switch (color) { | |
415 | case 0: | |
aeadb5d4 MD |
416 | *p = (g_u << 5) | b_v; |
417 | break; | |
418 | case 1: | |
aeadb5d4 MD |
419 | *p = (r_y << 3) | (g_u >> 3); |
420 | break; | |
421 | } | |
422 | break; | |
423 | case V4L2_PIX_FMT_RGB565X: | |
424 | switch (color) { | |
425 | case 0: | |
aeadb5d4 MD |
426 | *p = (r_y << 3) | (g_u >> 3); |
427 | break; | |
428 | case 1: | |
aeadb5d4 MD |
429 | *p = (g_u << 5) | b_v; |
430 | break; | |
431 | } | |
432 | break; | |
def52393 MD |
433 | case V4L2_PIX_FMT_RGB555: |
434 | switch (color) { | |
435 | case 0: | |
def52393 MD |
436 | *p = (g_u << 5) | b_v; |
437 | break; | |
438 | case 1: | |
7088f4df | 439 | *p = (alpha & 0x80) | (r_y << 2) | (g_u >> 3); |
def52393 MD |
440 | break; |
441 | } | |
442 | break; | |
443 | case V4L2_PIX_FMT_RGB555X: | |
444 | switch (color) { | |
445 | case 0: | |
7088f4df | 446 | *p = (alpha & 0x80) | (r_y << 2) | (g_u >> 3); |
def52393 MD |
447 | break; |
448 | case 1: | |
def52393 MD |
449 | *p = (g_u << 5) | b_v; |
450 | break; | |
451 | } | |
452 | break; | |
3d51dca2 HV |
453 | case V4L2_PIX_FMT_RGB24: |
454 | switch (color) { | |
455 | case 0: | |
456 | *p = r_y; | |
457 | break; | |
458 | case 1: | |
459 | *p = g_u; | |
460 | break; | |
461 | case 2: | |
462 | *p = b_v; | |
463 | break; | |
464 | } | |
465 | break; | |
466 | case V4L2_PIX_FMT_BGR24: | |
467 | switch (color) { | |
468 | case 0: | |
469 | *p = b_v; | |
470 | break; | |
471 | case 1: | |
472 | *p = g_u; | |
473 | break; | |
474 | case 2: | |
475 | *p = r_y; | |
476 | break; | |
477 | } | |
478 | break; | |
479 | case V4L2_PIX_FMT_RGB32: | |
480 | switch (color) { | |
481 | case 0: | |
7088f4df | 482 | *p = alpha; |
3d51dca2 HV |
483 | break; |
484 | case 1: | |
485 | *p = r_y; | |
486 | break; | |
487 | case 2: | |
488 | *p = g_u; | |
489 | break; | |
490 | case 3: | |
491 | *p = b_v; | |
492 | break; | |
493 | } | |
494 | break; | |
495 | case V4L2_PIX_FMT_BGR32: | |
496 | switch (color) { | |
497 | case 0: | |
498 | *p = b_v; | |
499 | break; | |
500 | case 1: | |
501 | *p = g_u; | |
502 | break; | |
503 | case 2: | |
504 | *p = r_y; | |
505 | break; | |
506 | case 3: | |
7088f4df | 507 | *p = alpha; |
3d51dca2 HV |
508 | break; |
509 | } | |
510 | break; | |
74d7c5af MD |
511 | } |
512 | } | |
513 | } | |
514 | ||
730947bc | 515 | static void precalculate_line(struct vivi_dev *dev) |
1e6dd65e | 516 | { |
730947bc | 517 | int w; |
1e6dd65e | 518 | |
3d51dca2 HV |
519 | for (w = 0; w < dev->width * 2; w++) { |
520 | int colorpos = w / (dev->width / 8) % 8; | |
74d7c5af | 521 | |
3d51dca2 | 522 | gen_twopix(dev, dev->line + w * dev->pixelsize, colorpos, w & 1); |
1e6dd65e | 523 | } |
730947bc | 524 | } |
1e6dd65e | 525 | |
730947bc HV |
526 | static void gen_text(struct vivi_dev *dev, char *basep, |
527 | int y, int x, char *text) | |
528 | { | |
529 | int line; | |
e164b58a | 530 | |
730947bc HV |
531 | /* Checks if it is possible to show string */ |
532 | if (y + 16 >= dev->height || x + strlen(text) * 8 >= dev->width) | |
533 | return; | |
1e6dd65e MCC |
534 | |
535 | /* Print stream time */ | |
730947bc HV |
536 | for (line = y; line < y + 16; line++) { |
537 | int j = 0; | |
3d51dca2 | 538 | char *pos = basep + line * dev->width * dev->pixelsize + x * dev->pixelsize; |
730947bc HV |
539 | char *s; |
540 | ||
541 | for (s = text; *s; s++) { | |
542 | u8 chr = font8x16[*s * 16 + line - y]; | |
543 | int i; | |
544 | ||
545 | for (i = 0; i < 7; i++, j++) { | |
74d7c5af | 546 | /* Draw white font on black background */ |
730947bc | 547 | if (chr & (1 << (7 - i))) |
3d51dca2 | 548 | gen_twopix(dev, pos + j * dev->pixelsize, WHITE, (x+y) & 1); |
74d7c5af | 549 | else |
3d51dca2 | 550 | gen_twopix(dev, pos + j * dev->pixelsize, TEXT_BLACK, (x+y) & 1); |
1e6dd65e MCC |
551 | } |
552 | } | |
553 | } | |
1e6dd65e | 554 | } |
78718e5d | 555 | |
730947bc | 556 | static void vivi_fillbuff(struct vivi_dev *dev, struct vivi_buffer *buf) |
1e6dd65e | 557 | { |
e007a325 PO |
558 | int wmax = dev->width; |
559 | int hmax = dev->height; | |
1e6dd65e | 560 | struct timeval ts; |
e007a325 | 561 | void *vbuf = vb2_plane_vaddr(&buf->vb, 0); |
730947bc HV |
562 | unsigned ms; |
563 | char str[100]; | |
564 | int h, line = 1; | |
a1c894fb | 565 | s32 gain; |
b50e7fe9 | 566 | |
5c554e6b | 567 | if (!vbuf) |
5a037706 | 568 | return; |
1e6dd65e | 569 | |
730947bc | 570 | for (h = 0; h < hmax; h++) |
3d51dca2 HV |
571 | memcpy(vbuf + h * wmax * dev->pixelsize, |
572 | dev->line + (dev->mv_count % wmax) * dev->pixelsize, | |
573 | wmax * dev->pixelsize); | |
5a037706 | 574 | |
1e6dd65e MCC |
575 | /* Updates stream time */ |
576 | ||
730947bc | 577 | dev->ms += jiffies_to_msecs(jiffies - dev->jiffies); |
543323bc | 578 | dev->jiffies = jiffies; |
730947bc HV |
579 | ms = dev->ms; |
580 | snprintf(str, sizeof(str), " %02d:%02d:%02d:%03d ", | |
581 | (ms / (60 * 60 * 1000)) % 24, | |
582 | (ms / (60 * 1000)) % 60, | |
583 | (ms / 1000) % 60, | |
584 | ms % 1000); | |
585 | gen_text(dev, vbuf, line++ * 16, 16, str); | |
586 | snprintf(str, sizeof(str), " %dx%d, input %d ", | |
587 | dev->width, dev->height, dev->input); | |
588 | gen_text(dev, vbuf, line++ * 16, 16, str); | |
589 | ||
a1c894fb | 590 | gain = v4l2_ctrl_g_ctrl(dev->gain); |
77e7c4e6 | 591 | mutex_lock(dev->ctrl_handler.lock); |
730947bc | 592 | snprintf(str, sizeof(str), " brightness %3d, contrast %3d, saturation %3d, hue %d ", |
7e996afa HV |
593 | dev->brightness->cur.val, |
594 | dev->contrast->cur.val, | |
595 | dev->saturation->cur.val, | |
596 | dev->hue->cur.val); | |
730947bc | 597 | gen_text(dev, vbuf, line++ * 16, 16, str); |
7088f4df HV |
598 | snprintf(str, sizeof(str), " autogain %d, gain %3d, volume %3d, alpha 0x%02x ", |
599 | dev->autogain->cur.val, gain, dev->volume->cur.val, | |
600 | dev->alpha->cur.val); | |
730947bc | 601 | gen_text(dev, vbuf, line++ * 16, 16, str); |
b6d17a56 | 602 | snprintf(str, sizeof(str), " int32 %d, int64 %lld, bitmask %08x ", |
7e996afa | 603 | dev->int32->cur.val, |
b6d17a56 HV |
604 | dev->int64->cur.val64, |
605 | dev->bitmask->cur.val); | |
7e996afa HV |
606 | gen_text(dev, vbuf, line++ * 16, 16, str); |
607 | snprintf(str, sizeof(str), " boolean %d, menu %s, string \"%s\" ", | |
608 | dev->boolean->cur.val, | |
609 | dev->menu->qmenu[dev->menu->cur.val], | |
610 | dev->string->cur.string); | |
f70cfc7f | 611 | gen_text(dev, vbuf, line++ * 16, 16, str); |
c520331a SA |
612 | snprintf(str, sizeof(str), " integer_menu %lld, value %d ", |
613 | dev->int_menu->qmenu_int[dev->int_menu->cur.val], | |
614 | dev->int_menu->cur.val); | |
615 | gen_text(dev, vbuf, line++ * 16, 16, str); | |
77e7c4e6 | 616 | mutex_unlock(dev->ctrl_handler.lock); |
7e996afa HV |
617 | if (dev->button_pressed) { |
618 | dev->button_pressed--; | |
619 | snprintf(str, sizeof(str), " button pressed!"); | |
620 | gen_text(dev, vbuf, line++ * 16, 16, str); | |
621 | } | |
730947bc HV |
622 | |
623 | dev->mv_count += 2; | |
1e6dd65e | 624 | |
cd779254 | 625 | buf->vb.v4l2_buf.field = V4L2_FIELD_INTERLACED; |
e007a325 PO |
626 | dev->field_count++; |
627 | buf->vb.v4l2_buf.sequence = dev->field_count >> 1; | |
1e6dd65e | 628 | do_gettimeofday(&ts); |
e007a325 | 629 | buf->vb.v4l2_buf.timestamp = ts; |
1e6dd65e MCC |
630 | } |
631 | ||
730947bc | 632 | static void vivi_thread_tick(struct vivi_dev *dev) |
1e6dd65e | 633 | { |
78718e5d | 634 | struct vivi_dmaqueue *dma_q = &dev->vidq; |
730947bc | 635 | struct vivi_buffer *buf; |
78718e5d | 636 | unsigned long flags = 0; |
1e6dd65e | 637 | |
78718e5d | 638 | dprintk(dev, 1, "Thread tick\n"); |
1e6dd65e | 639 | |
78718e5d BP |
640 | spin_lock_irqsave(&dev->slock, flags); |
641 | if (list_empty(&dma_q->active)) { | |
642 | dprintk(dev, 1, "No active queue to serve\n"); | |
1de5be5e HV |
643 | spin_unlock_irqrestore(&dev->slock, flags); |
644 | return; | |
78718e5d | 645 | } |
1e6dd65e | 646 | |
e007a325 PO |
647 | buf = list_entry(dma_q->active.next, struct vivi_buffer, list); |
648 | list_del(&buf->list); | |
1de5be5e | 649 | spin_unlock_irqrestore(&dev->slock, flags); |
1e6dd65e | 650 | |
e007a325 | 651 | do_gettimeofday(&buf->vb.v4l2_buf.timestamp); |
78718e5d BP |
652 | |
653 | /* Fill buffer */ | |
730947bc | 654 | vivi_fillbuff(dev, buf); |
78718e5d BP |
655 | dprintk(dev, 1, "filled buffer %p\n", buf); |
656 | ||
e007a325 PO |
657 | vb2_buffer_done(&buf->vb, VB2_BUF_STATE_DONE); |
658 | dprintk(dev, 2, "[%p/%d] done\n", buf, buf->vb.v4l2_buf.index); | |
1e6dd65e MCC |
659 | } |
660 | ||
6594ad82 MCC |
661 | #define frames_to_ms(frames) \ |
662 | ((frames * WAKE_NUMERATOR * 1000) / WAKE_DENOMINATOR) | |
663 | ||
730947bc | 664 | static void vivi_sleep(struct vivi_dev *dev) |
1e6dd65e | 665 | { |
78718e5d BP |
666 | struct vivi_dmaqueue *dma_q = &dev->vidq; |
667 | int timeout; | |
1e6dd65e MCC |
668 | DECLARE_WAITQUEUE(wait, current); |
669 | ||
7e28adb2 | 670 | dprintk(dev, 1, "%s dma_q=0x%08lx\n", __func__, |
6c2f9901 | 671 | (unsigned long)dma_q); |
1e6dd65e MCC |
672 | |
673 | add_wait_queue(&dma_q->wq, &wait); | |
6594ad82 MCC |
674 | if (kthread_should_stop()) |
675 | goto stop_task; | |
676 | ||
6594ad82 | 677 | /* Calculate time to wake up */ |
78718e5d | 678 | timeout = msecs_to_jiffies(frames_to_ms(1)); |
6594ad82 | 679 | |
730947bc | 680 | vivi_thread_tick(dev); |
6594ad82 MCC |
681 | |
682 | schedule_timeout_interruptible(timeout); | |
1e6dd65e | 683 | |
6594ad82 | 684 | stop_task: |
1e6dd65e MCC |
685 | remove_wait_queue(&dma_q->wq, &wait); |
686 | try_to_freeze(); | |
687 | } | |
688 | ||
972c3517 | 689 | static int vivi_thread(void *data) |
1e6dd65e | 690 | { |
730947bc | 691 | struct vivi_dev *dev = data; |
1e6dd65e | 692 | |
6c2f9901 | 693 | dprintk(dev, 1, "thread started\n"); |
1e6dd65e | 694 | |
83144186 | 695 | set_freezable(); |
0b600512 | 696 | |
1e6dd65e | 697 | for (;;) { |
730947bc | 698 | vivi_sleep(dev); |
1e6dd65e MCC |
699 | |
700 | if (kthread_should_stop()) | |
701 | break; | |
702 | } | |
6c2f9901 | 703 | dprintk(dev, 1, "thread: exit\n"); |
1e6dd65e MCC |
704 | return 0; |
705 | } | |
706 | ||
e007a325 | 707 | static int vivi_start_generating(struct vivi_dev *dev) |
1e6dd65e | 708 | { |
78718e5d | 709 | struct vivi_dmaqueue *dma_q = &dev->vidq; |
6c2f9901 | 710 | |
7e28adb2 | 711 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e | 712 | |
730947bc HV |
713 | /* Resets frame counters */ |
714 | dev->ms = 0; | |
715 | dev->mv_count = 0; | |
716 | dev->jiffies = jiffies; | |
717 | ||
718 | dma_q->frame = 0; | |
719 | dma_q->ini_jiffies = jiffies; | |
720 | dma_q->kthread = kthread_run(vivi_thread, dev, dev->v4l2_dev.name); | |
1e6dd65e | 721 | |
054afee4 | 722 | if (IS_ERR(dma_q->kthread)) { |
5ab6c9af | 723 | v4l2_err(&dev->v4l2_dev, "kernel_thread() failed\n"); |
e007a325 | 724 | return PTR_ERR(dma_q->kthread); |
1e6dd65e | 725 | } |
0b600512 MCC |
726 | /* Wakes thread */ |
727 | wake_up_interruptible(&dma_q->wq); | |
728 | ||
7e28adb2 | 729 | dprintk(dev, 1, "returning from %s\n", __func__); |
e007a325 | 730 | return 0; |
1e6dd65e MCC |
731 | } |
732 | ||
e007a325 | 733 | static void vivi_stop_generating(struct vivi_dev *dev) |
1e6dd65e | 734 | { |
730947bc | 735 | struct vivi_dmaqueue *dma_q = &dev->vidq; |
6c2f9901 | 736 | |
7e28adb2 | 737 | dprintk(dev, 1, "%s\n", __func__); |
730947bc | 738 | |
1e6dd65e MCC |
739 | /* shutdown control thread */ |
740 | if (dma_q->kthread) { | |
741 | kthread_stop(dma_q->kthread); | |
543323bc | 742 | dma_q->kthread = NULL; |
1e6dd65e | 743 | } |
730947bc | 744 | |
e007a325 PO |
745 | /* |
746 | * Typical driver might need to wait here until dma engine stops. | |
747 | * In this case we can abort imiedetly, so it's just a noop. | |
748 | */ | |
749 | ||
750 | /* Release all active buffers */ | |
751 | while (!list_empty(&dma_q->active)) { | |
752 | struct vivi_buffer *buf; | |
753 | buf = list_entry(dma_q->active.next, struct vivi_buffer, list); | |
754 | list_del(&buf->list); | |
755 | vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); | |
756 | dprintk(dev, 2, "[%p/%d] done\n", buf, buf->vb.v4l2_buf.index); | |
757 | } | |
1e6dd65e | 758 | } |
1e6dd65e MCC |
759 | /* ------------------------------------------------------------------ |
760 | Videobuf operations | |
761 | ------------------------------------------------------------------*/ | |
fc714e70 GL |
762 | static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt, |
763 | unsigned int *nbuffers, unsigned int *nplanes, | |
764 | unsigned int sizes[], void *alloc_ctxs[]) | |
1e6dd65e | 765 | { |
e007a325 PO |
766 | struct vivi_dev *dev = vb2_get_drv_priv(vq); |
767 | unsigned long size; | |
768 | ||
2e90c6c3 HV |
769 | if (fmt) |
770 | size = fmt->fmt.pix.sizeimage; | |
771 | else | |
772 | size = dev->width * dev->height * dev->pixelsize; | |
773 | ||
774 | if (size == 0) | |
775 | return -EINVAL; | |
1e6dd65e | 776 | |
e007a325 PO |
777 | if (0 == *nbuffers) |
778 | *nbuffers = 32; | |
1e6dd65e | 779 | |
e007a325 PO |
780 | while (size * *nbuffers > vid_limit * 1024 * 1024) |
781 | (*nbuffers)--; | |
6bb2790f | 782 | |
e007a325 | 783 | *nplanes = 1; |
6bb2790f | 784 | |
e007a325 PO |
785 | sizes[0] = size; |
786 | ||
787 | /* | |
788 | * videobuf2-vmalloc allocator is context-less so no need to set | |
789 | * alloc_ctxs array. | |
790 | */ | |
791 | ||
792 | dprintk(dev, 1, "%s, count=%d, size=%ld\n", __func__, | |
793 | *nbuffers, size); | |
6bb2790f | 794 | |
1e6dd65e MCC |
795 | return 0; |
796 | } | |
797 | ||
e007a325 | 798 | static int buffer_prepare(struct vb2_buffer *vb) |
1e6dd65e | 799 | { |
e007a325 | 800 | struct vivi_dev *dev = vb2_get_drv_priv(vb->vb2_queue); |
543323bc | 801 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
e007a325 | 802 | unsigned long size; |
1e6dd65e | 803 | |
e007a325 | 804 | dprintk(dev, 1, "%s, field=%d\n", __func__, vb->v4l2_buf.field); |
1e6dd65e | 805 | |
730947bc | 806 | BUG_ON(NULL == dev->fmt); |
78718e5d | 807 | |
e007a325 PO |
808 | /* |
809 | * Theses properties only change when queue is idle, see s_fmt. | |
810 | * The below checks should not be performed here, on each | |
811 | * buffer_prepare (i.e. on each qbuf). Most of the code in this function | |
812 | * should thus be moved to buffer_init and s_fmt. | |
813 | */ | |
730947bc HV |
814 | if (dev->width < 48 || dev->width > MAX_WIDTH || |
815 | dev->height < 32 || dev->height > MAX_HEIGHT) | |
1e6dd65e | 816 | return -EINVAL; |
78718e5d | 817 | |
3d51dca2 | 818 | size = dev->width * dev->height * dev->pixelsize; |
e007a325 PO |
819 | if (vb2_plane_size(vb, 0) < size) { |
820 | dprintk(dev, 1, "%s data will not fit into plane (%lu < %lu)\n", | |
821 | __func__, vb2_plane_size(vb, 0), size); | |
1e6dd65e | 822 | return -EINVAL; |
e007a325 PO |
823 | } |
824 | ||
825 | vb2_set_plane_payload(&buf->vb, 0, size); | |
1e6dd65e | 826 | |
e007a325 | 827 | buf->fmt = dev->fmt; |
1e6dd65e | 828 | |
730947bc HV |
829 | precalculate_bars(dev); |
830 | precalculate_line(dev); | |
c285addb | 831 | |
e007a325 PO |
832 | return 0; |
833 | } | |
1e6dd65e | 834 | |
e007a325 | 835 | static void buffer_queue(struct vb2_buffer *vb) |
1e6dd65e | 836 | { |
e007a325 | 837 | struct vivi_dev *dev = vb2_get_drv_priv(vb->vb2_queue); |
730947bc | 838 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
78718e5d | 839 | struct vivi_dmaqueue *vidq = &dev->vidq; |
e007a325 | 840 | unsigned long flags = 0; |
78718e5d | 841 | |
7e28adb2 | 842 | dprintk(dev, 1, "%s\n", __func__); |
78718e5d | 843 | |
e007a325 PO |
844 | spin_lock_irqsave(&dev->slock, flags); |
845 | list_add_tail(&buf->list, &vidq->active); | |
846 | spin_unlock_irqrestore(&dev->slock, flags); | |
1e6dd65e MCC |
847 | } |
848 | ||
bd323e28 | 849 | static int start_streaming(struct vb2_queue *vq, unsigned int count) |
1e6dd65e | 850 | { |
e007a325 PO |
851 | struct vivi_dev *dev = vb2_get_drv_priv(vq); |
852 | dprintk(dev, 1, "%s\n", __func__); | |
853 | return vivi_start_generating(dev); | |
854 | } | |
1e6dd65e | 855 | |
e007a325 PO |
856 | /* abort streaming and wait for last buffer */ |
857 | static int stop_streaming(struct vb2_queue *vq) | |
858 | { | |
859 | struct vivi_dev *dev = vb2_get_drv_priv(vq); | |
7e28adb2 | 860 | dprintk(dev, 1, "%s\n", __func__); |
e007a325 PO |
861 | vivi_stop_generating(dev); |
862 | return 0; | |
863 | } | |
864 | ||
865 | static void vivi_lock(struct vb2_queue *vq) | |
866 | { | |
867 | struct vivi_dev *dev = vb2_get_drv_priv(vq); | |
868 | mutex_lock(&dev->mutex); | |
869 | } | |
1e6dd65e | 870 | |
e007a325 PO |
871 | static void vivi_unlock(struct vb2_queue *vq) |
872 | { | |
873 | struct vivi_dev *dev = vb2_get_drv_priv(vq); | |
874 | mutex_unlock(&dev->mutex); | |
1e6dd65e MCC |
875 | } |
876 | ||
e007a325 PO |
877 | |
878 | static struct vb2_ops vivi_video_qops = { | |
879 | .queue_setup = queue_setup, | |
e007a325 | 880 | .buf_prepare = buffer_prepare, |
e007a325 PO |
881 | .buf_queue = buffer_queue, |
882 | .start_streaming = start_streaming, | |
883 | .stop_streaming = stop_streaming, | |
884 | .wait_prepare = vivi_unlock, | |
885 | .wait_finish = vivi_lock, | |
1e6dd65e MCC |
886 | }; |
887 | ||
c820cc45 MCC |
888 | /* ------------------------------------------------------------------ |
889 | IOCTL vidioc handling | |
890 | ------------------------------------------------------------------*/ | |
543323bc | 891 | static int vidioc_querycap(struct file *file, void *priv, |
c820cc45 MCC |
892 | struct v4l2_capability *cap) |
893 | { | |
730947bc | 894 | struct vivi_dev *dev = video_drvdata(file); |
5ab6c9af | 895 | |
c820cc45 MCC |
896 | strcpy(cap->driver, "vivi"); |
897 | strcpy(cap->card, "vivi"); | |
5ab6c9af | 898 | strlcpy(cap->bus_info, dev->v4l2_dev.name, sizeof(cap->bus_info)); |
23268ae5 HV |
899 | cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING | |
900 | V4L2_CAP_READWRITE; | |
901 | cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; | |
c820cc45 MCC |
902 | return 0; |
903 | } | |
904 | ||
78b526a4 | 905 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 MCC |
906 | struct v4l2_fmtdesc *f) |
907 | { | |
d891f475 MD |
908 | struct vivi_fmt *fmt; |
909 | ||
910 | if (f->index >= ARRAY_SIZE(formats)) | |
c820cc45 MCC |
911 | return -EINVAL; |
912 | ||
d891f475 MD |
913 | fmt = &formats[f->index]; |
914 | ||
915 | strlcpy(f->description, fmt->name, sizeof(f->description)); | |
916 | f->pixelformat = fmt->fourcc; | |
c820cc45 MCC |
917 | return 0; |
918 | } | |
919 | ||
78b526a4 | 920 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 MCC |
921 | struct v4l2_format *f) |
922 | { | |
730947bc | 923 | struct vivi_dev *dev = video_drvdata(file); |
c820cc45 | 924 | |
730947bc HV |
925 | f->fmt.pix.width = dev->width; |
926 | f->fmt.pix.height = dev->height; | |
cd779254 | 927 | f->fmt.pix.field = V4L2_FIELD_INTERLACED; |
730947bc | 928 | f->fmt.pix.pixelformat = dev->fmt->fourcc; |
c820cc45 | 929 | f->fmt.pix.bytesperline = |
730947bc | 930 | (f->fmt.pix.width * dev->fmt->depth) >> 3; |
c820cc45 MCC |
931 | f->fmt.pix.sizeimage = |
932 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
8c79eece HV |
933 | if (dev->fmt->fourcc == V4L2_PIX_FMT_YUYV || |
934 | dev->fmt->fourcc == V4L2_PIX_FMT_UYVY) | |
935 | f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; | |
936 | else | |
937 | f->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; | |
730947bc | 938 | return 0; |
c820cc45 MCC |
939 | } |
940 | ||
78b526a4 | 941 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, |
1e6dd65e MCC |
942 | struct v4l2_format *f) |
943 | { | |
730947bc | 944 | struct vivi_dev *dev = video_drvdata(file); |
1e6dd65e | 945 | struct vivi_fmt *fmt; |
1e6dd65e | 946 | |
d891f475 MD |
947 | fmt = get_format(f); |
948 | if (!fmt) { | |
cd779254 | 949 | dprintk(dev, 1, "Fourcc format (0x%08x) unknown.\n", |
d891f475 | 950 | f->fmt.pix.pixelformat); |
cd779254 HV |
951 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; |
952 | fmt = get_format(f); | |
1e6dd65e MCC |
953 | } |
954 | ||
cd779254 | 955 | f->fmt.pix.field = V4L2_FIELD_INTERLACED; |
730947bc HV |
956 | v4l_bound_align_image(&f->fmt.pix.width, 48, MAX_WIDTH, 2, |
957 | &f->fmt.pix.height, 32, MAX_HEIGHT, 0, 0); | |
1e6dd65e MCC |
958 | f->fmt.pix.bytesperline = |
959 | (f->fmt.pix.width * fmt->depth) >> 3; | |
960 | f->fmt.pix.sizeimage = | |
961 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
8c79eece HV |
962 | if (fmt->fourcc == V4L2_PIX_FMT_YUYV || |
963 | fmt->fourcc == V4L2_PIX_FMT_UYVY) | |
964 | f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; | |
965 | else | |
966 | f->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; | |
1e6dd65e MCC |
967 | return 0; |
968 | } | |
969 | ||
e164b58a MCC |
970 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, |
971 | struct v4l2_format *f) | |
972 | { | |
730947bc | 973 | struct vivi_dev *dev = video_drvdata(file); |
e007a325 | 974 | struct vb2_queue *q = &dev->vb_vidq; |
e164b58a | 975 | |
730947bc | 976 | int ret = vidioc_try_fmt_vid_cap(file, priv, f); |
e164b58a MCC |
977 | if (ret < 0) |
978 | return ret; | |
979 | ||
f2ba5a0b | 980 | if (vb2_is_busy(q)) { |
730947bc | 981 | dprintk(dev, 1, "%s device busy\n", __func__); |
e007a325 | 982 | return -EBUSY; |
e164b58a MCC |
983 | } |
984 | ||
730947bc | 985 | dev->fmt = get_format(f); |
3d51dca2 | 986 | dev->pixelsize = dev->fmt->depth / 8; |
730947bc HV |
987 | dev->width = f->fmt.pix.width; |
988 | dev->height = f->fmt.pix.height; | |
e007a325 PO |
989 | |
990 | return 0; | |
1e6dd65e MCC |
991 | } |
992 | ||
c820cc45 | 993 | /* only one input in this sample driver */ |
543323bc | 994 | static int vidioc_enum_input(struct file *file, void *priv, |
c820cc45 MCC |
995 | struct v4l2_input *inp) |
996 | { | |
e164b58a | 997 | if (inp->index >= NUM_INPUTS) |
c820cc45 | 998 | return -EINVAL; |
1e6dd65e | 999 | |
c820cc45 | 1000 | inp->type = V4L2_INPUT_TYPE_CAMERA; |
e164b58a | 1001 | sprintf(inp->name, "Camera %u", inp->index); |
730947bc | 1002 | return 0; |
c820cc45 | 1003 | } |
1e6dd65e | 1004 | |
543323bc | 1005 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) |
c820cc45 | 1006 | { |
730947bc | 1007 | struct vivi_dev *dev = video_drvdata(file); |
e164b58a MCC |
1008 | |
1009 | *i = dev->input; | |
730947bc | 1010 | return 0; |
c820cc45 | 1011 | } |
730947bc | 1012 | |
543323bc | 1013 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) |
c820cc45 | 1014 | { |
730947bc | 1015 | struct vivi_dev *dev = video_drvdata(file); |
e164b58a MCC |
1016 | |
1017 | if (i >= NUM_INPUTS) | |
c820cc45 | 1018 | return -EINVAL; |
1e6dd65e | 1019 | |
c7a52f8d HV |
1020 | if (i == dev->input) |
1021 | return 0; | |
1022 | ||
e164b58a | 1023 | dev->input = i; |
730947bc HV |
1024 | precalculate_bars(dev); |
1025 | precalculate_line(dev); | |
1026 | return 0; | |
c820cc45 | 1027 | } |
1e6dd65e | 1028 | |
730947bc | 1029 | /* --- controls ---------------------------------------------- */ |
1e6dd65e | 1030 | |
a1c894fb HV |
1031 | static int vivi_g_volatile_ctrl(struct v4l2_ctrl *ctrl) |
1032 | { | |
1033 | struct vivi_dev *dev = container_of(ctrl->handler, struct vivi_dev, ctrl_handler); | |
1034 | ||
1035 | if (ctrl == dev->autogain) | |
1036 | dev->gain->val = jiffies & 0xff; | |
1037 | return 0; | |
1038 | } | |
1039 | ||
7e996afa | 1040 | static int vivi_s_ctrl(struct v4l2_ctrl *ctrl) |
c820cc45 | 1041 | { |
7e996afa | 1042 | struct vivi_dev *dev = container_of(ctrl->handler, struct vivi_dev, ctrl_handler); |
1e6dd65e | 1043 | |
7088f4df HV |
1044 | switch (ctrl->id) { |
1045 | case V4L2_CID_ALPHA_COMPONENT: | |
1046 | dev->alpha_component = ctrl->val; | |
1047 | break; | |
1048 | default: | |
1049 | if (ctrl == dev->button) | |
1050 | dev->button_pressed = 30; | |
1051 | break; | |
1052 | } | |
7e996afa | 1053 | return 0; |
1e6dd65e MCC |
1054 | } |
1055 | ||
1056 | /* ------------------------------------------------------------------ | |
1057 | File operations for the device | |
1058 | ------------------------------------------------------------------*/ | |
1059 | ||
7e996afa | 1060 | static const struct v4l2_ctrl_ops vivi_ctrl_ops = { |
a1c894fb | 1061 | .g_volatile_ctrl = vivi_g_volatile_ctrl, |
7e996afa HV |
1062 | .s_ctrl = vivi_s_ctrl, |
1063 | }; | |
1064 | ||
1065 | #define VIVI_CID_CUSTOM_BASE (V4L2_CID_USER_BASE | 0xf000) | |
1066 | ||
1067 | static const struct v4l2_ctrl_config vivi_ctrl_button = { | |
1068 | .ops = &vivi_ctrl_ops, | |
1069 | .id = VIVI_CID_CUSTOM_BASE + 0, | |
1070 | .name = "Button", | |
1071 | .type = V4L2_CTRL_TYPE_BUTTON, | |
1072 | }; | |
1073 | ||
1074 | static const struct v4l2_ctrl_config vivi_ctrl_boolean = { | |
1075 | .ops = &vivi_ctrl_ops, | |
1076 | .id = VIVI_CID_CUSTOM_BASE + 1, | |
1077 | .name = "Boolean", | |
1078 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
1079 | .min = 0, | |
1080 | .max = 1, | |
1081 | .step = 1, | |
1082 | .def = 1, | |
1083 | }; | |
1084 | ||
1085 | static const struct v4l2_ctrl_config vivi_ctrl_int32 = { | |
1086 | .ops = &vivi_ctrl_ops, | |
1087 | .id = VIVI_CID_CUSTOM_BASE + 2, | |
1088 | .name = "Integer 32 Bits", | |
1089 | .type = V4L2_CTRL_TYPE_INTEGER, | |
5b283029 HV |
1090 | .min = 0x80000000, |
1091 | .max = 0x7fffffff, | |
7e996afa HV |
1092 | .step = 1, |
1093 | }; | |
1094 | ||
1095 | static const struct v4l2_ctrl_config vivi_ctrl_int64 = { | |
1096 | .ops = &vivi_ctrl_ops, | |
1097 | .id = VIVI_CID_CUSTOM_BASE + 3, | |
1098 | .name = "Integer 64 Bits", | |
1099 | .type = V4L2_CTRL_TYPE_INTEGER64, | |
1100 | }; | |
1101 | ||
1102 | static const char * const vivi_ctrl_menu_strings[] = { | |
1103 | "Menu Item 0 (Skipped)", | |
1104 | "Menu Item 1", | |
1105 | "Menu Item 2 (Skipped)", | |
1106 | "Menu Item 3", | |
1107 | "Menu Item 4", | |
1108 | "Menu Item 5 (Skipped)", | |
1109 | NULL, | |
1110 | }; | |
1111 | ||
1112 | static const struct v4l2_ctrl_config vivi_ctrl_menu = { | |
1113 | .ops = &vivi_ctrl_ops, | |
1114 | .id = VIVI_CID_CUSTOM_BASE + 4, | |
1115 | .name = "Menu", | |
1116 | .type = V4L2_CTRL_TYPE_MENU, | |
1117 | .min = 1, | |
1118 | .max = 4, | |
1119 | .def = 3, | |
1120 | .menu_skip_mask = 0x04, | |
1121 | .qmenu = vivi_ctrl_menu_strings, | |
1122 | }; | |
1123 | ||
1124 | static const struct v4l2_ctrl_config vivi_ctrl_string = { | |
1125 | .ops = &vivi_ctrl_ops, | |
1126 | .id = VIVI_CID_CUSTOM_BASE + 5, | |
1127 | .name = "String", | |
1128 | .type = V4L2_CTRL_TYPE_STRING, | |
1129 | .min = 2, | |
1130 | .max = 4, | |
1131 | .step = 1, | |
1132 | }; | |
1133 | ||
b6d17a56 HV |
1134 | static const struct v4l2_ctrl_config vivi_ctrl_bitmask = { |
1135 | .ops = &vivi_ctrl_ops, | |
1136 | .id = VIVI_CID_CUSTOM_BASE + 6, | |
1137 | .name = "Bitmask", | |
1138 | .type = V4L2_CTRL_TYPE_BITMASK, | |
1139 | .def = 0x80002000, | |
1140 | .min = 0, | |
1141 | .max = 0x80402010, | |
1142 | .step = 0, | |
1143 | }; | |
1144 | ||
c520331a SA |
1145 | static const s64 vivi_ctrl_int_menu_values[] = { |
1146 | 1, 1, 2, 3, 5, 8, 13, 21, 42, | |
1147 | }; | |
1148 | ||
1149 | static const struct v4l2_ctrl_config vivi_ctrl_int_menu = { | |
1150 | .ops = &vivi_ctrl_ops, | |
1151 | .id = VIVI_CID_CUSTOM_BASE + 7, | |
1152 | .name = "Integer menu", | |
1153 | .type = V4L2_CTRL_TYPE_INTEGER_MENU, | |
1154 | .min = 1, | |
1155 | .max = 8, | |
1156 | .def = 4, | |
1157 | .menu_skip_mask = 0x02, | |
1158 | .qmenu_int = vivi_ctrl_int_menu_values, | |
1159 | }; | |
1160 | ||
bec43661 | 1161 | static const struct v4l2_file_operations vivi_fops = { |
1e6dd65e | 1162 | .owner = THIS_MODULE, |
c7a52f8d | 1163 | .open = v4l2_fh_open, |
f2ba5a0b HV |
1164 | .release = vb2_fop_release, |
1165 | .read = vb2_fop_read, | |
1166 | .poll = vb2_fop_poll, | |
fedc6c81 | 1167 | .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */ |
f2ba5a0b | 1168 | .mmap = vb2_fop_mmap, |
1e6dd65e MCC |
1169 | }; |
1170 | ||
a399810c | 1171 | static const struct v4l2_ioctl_ops vivi_ioctl_ops = { |
c820cc45 | 1172 | .vidioc_querycap = vidioc_querycap, |
78b526a4 HV |
1173 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, |
1174 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
1175 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
1176 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
f2ba5a0b | 1177 | .vidioc_reqbufs = vb2_ioctl_reqbufs, |
2e90c6c3 HV |
1178 | .vidioc_create_bufs = vb2_ioctl_create_bufs, |
1179 | .vidioc_prepare_buf = vb2_ioctl_prepare_buf, | |
f2ba5a0b HV |
1180 | .vidioc_querybuf = vb2_ioctl_querybuf, |
1181 | .vidioc_qbuf = vb2_ioctl_qbuf, | |
1182 | .vidioc_dqbuf = vb2_ioctl_dqbuf, | |
c820cc45 MCC |
1183 | .vidioc_enum_input = vidioc_enum_input, |
1184 | .vidioc_g_input = vidioc_g_input, | |
1185 | .vidioc_s_input = vidioc_s_input, | |
f2ba5a0b HV |
1186 | .vidioc_streamon = vb2_ioctl_streamon, |
1187 | .vidioc_streamoff = vb2_ioctl_streamoff, | |
e2ecb257 | 1188 | .vidioc_log_status = v4l2_ctrl_log_status, |
6d6604fa | 1189 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
c7a52f8d | 1190 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, |
a399810c HV |
1191 | }; |
1192 | ||
1193 | static struct video_device vivi_template = { | |
1194 | .name = "vivi", | |
a399810c HV |
1195 | .fops = &vivi_fops, |
1196 | .ioctl_ops = &vivi_ioctl_ops, | |
70bd97ae | 1197 | .release = video_device_release_empty, |
1e6dd65e | 1198 | }; |
5ab6c9af | 1199 | |
c820cc45 | 1200 | /* ----------------------------------------------------------------- |
1e6dd65e MCC |
1201 | Initialization and module stuff |
1202 | ------------------------------------------------------------------*/ | |
1203 | ||
5ab6c9af HV |
1204 | static int vivi_release(void) |
1205 | { | |
1206 | struct vivi_dev *dev; | |
1207 | struct list_head *list; | |
980d4f17 | 1208 | |
5ab6c9af HV |
1209 | while (!list_empty(&vivi_devlist)) { |
1210 | list = vivi_devlist.next; | |
1211 | list_del(list); | |
1212 | dev = list_entry(list, struct vivi_dev, vivi_devlist); | |
1213 | ||
38c7c036 | 1214 | v4l2_info(&dev->v4l2_dev, "unregistering %s\n", |
70bd97ae HV |
1215 | video_device_node_name(&dev->vdev)); |
1216 | video_unregister_device(&dev->vdev); | |
5ab6c9af | 1217 | v4l2_device_unregister(&dev->v4l2_dev); |
7e996afa | 1218 | v4l2_ctrl_handler_free(&dev->ctrl_handler); |
5ab6c9af HV |
1219 | kfree(dev); |
1220 | } | |
1221 | ||
1222 | return 0; | |
1223 | } | |
1224 | ||
c41ee24b | 1225 | static int __init vivi_create_instance(int inst) |
1e6dd65e | 1226 | { |
1e6dd65e | 1227 | struct vivi_dev *dev; |
f905c442 | 1228 | struct video_device *vfd; |
7e996afa | 1229 | struct v4l2_ctrl_handler *hdl; |
e007a325 | 1230 | struct vb2_queue *q; |
730947bc | 1231 | int ret; |
1e6dd65e | 1232 | |
5ab6c9af HV |
1233 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
1234 | if (!dev) | |
1235 | return -ENOMEM; | |
980d4f17 | 1236 | |
5ab6c9af | 1237 | snprintf(dev->v4l2_dev.name, sizeof(dev->v4l2_dev.name), |
c41ee24b | 1238 | "%s-%03d", VIVI_MODULE_NAME, inst); |
5ab6c9af HV |
1239 | ret = v4l2_device_register(NULL, &dev->v4l2_dev); |
1240 | if (ret) | |
1241 | goto free_dev; | |
1e6dd65e | 1242 | |
730947bc HV |
1243 | dev->fmt = &formats[0]; |
1244 | dev->width = 640; | |
1245 | dev->height = 480; | |
3d51dca2 | 1246 | dev->pixelsize = dev->fmt->depth / 8; |
7e996afa HV |
1247 | hdl = &dev->ctrl_handler; |
1248 | v4l2_ctrl_handler_init(hdl, 11); | |
1249 | dev->volume = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops, | |
1250 | V4L2_CID_AUDIO_VOLUME, 0, 255, 1, 200); | |
1251 | dev->brightness = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops, | |
1252 | V4L2_CID_BRIGHTNESS, 0, 255, 1, 127); | |
1253 | dev->contrast = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops, | |
1254 | V4L2_CID_CONTRAST, 0, 255, 1, 16); | |
1255 | dev->saturation = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops, | |
1256 | V4L2_CID_SATURATION, 0, 255, 1, 127); | |
1257 | dev->hue = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops, | |
1258 | V4L2_CID_HUE, -128, 127, 1, 0); | |
a1c894fb HV |
1259 | dev->autogain = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops, |
1260 | V4L2_CID_AUTOGAIN, 0, 1, 1, 1); | |
1261 | dev->gain = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops, | |
1262 | V4L2_CID_GAIN, 0, 255, 1, 100); | |
7088f4df HV |
1263 | dev->alpha = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops, |
1264 | V4L2_CID_ALPHA_COMPONENT, 0, 255, 1, 0); | |
7e996afa HV |
1265 | dev->button = v4l2_ctrl_new_custom(hdl, &vivi_ctrl_button, NULL); |
1266 | dev->int32 = v4l2_ctrl_new_custom(hdl, &vivi_ctrl_int32, NULL); | |
1267 | dev->int64 = v4l2_ctrl_new_custom(hdl, &vivi_ctrl_int64, NULL); | |
1268 | dev->boolean = v4l2_ctrl_new_custom(hdl, &vivi_ctrl_boolean, NULL); | |
1269 | dev->menu = v4l2_ctrl_new_custom(hdl, &vivi_ctrl_menu, NULL); | |
1270 | dev->string = v4l2_ctrl_new_custom(hdl, &vivi_ctrl_string, NULL); | |
b6d17a56 | 1271 | dev->bitmask = v4l2_ctrl_new_custom(hdl, &vivi_ctrl_bitmask, NULL); |
c520331a | 1272 | dev->int_menu = v4l2_ctrl_new_custom(hdl, &vivi_ctrl_int_menu, NULL); |
7e996afa HV |
1273 | if (hdl->error) { |
1274 | ret = hdl->error; | |
1275 | goto unreg_dev; | |
1276 | } | |
a1c894fb | 1277 | v4l2_ctrl_auto_cluster(2, &dev->autogain, 0, true); |
7e996afa | 1278 | dev->v4l2_dev.ctrl_handler = hdl; |
730947bc | 1279 | |
fedc6c81 HV |
1280 | /* initialize locks */ |
1281 | spin_lock_init(&dev->slock); | |
fedc6c81 | 1282 | |
e007a325 PO |
1283 | /* initialize queue */ |
1284 | q = &dev->vb_vidq; | |
1285 | memset(q, 0, sizeof(dev->vb_vidq)); | |
1286 | q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1287 | q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ; | |
1288 | q->drv_priv = dev; | |
1289 | q->buf_struct_size = sizeof(struct vivi_buffer); | |
1290 | q->ops = &vivi_video_qops; | |
1291 | q->mem_ops = &vb2_vmalloc_memops; | |
1292 | ||
1293 | vb2_queue_init(q); | |
1294 | ||
1295 | mutex_init(&dev->mutex); | |
730947bc | 1296 | |
5ab6c9af HV |
1297 | /* init video dma queues */ |
1298 | INIT_LIST_HEAD(&dev->vidq.active); | |
1299 | init_waitqueue_head(&dev->vidq.wq); | |
1e6dd65e | 1300 | |
70bd97ae | 1301 | vfd = &dev->vdev; |
5ab6c9af | 1302 | *vfd = vivi_template; |
c285addb | 1303 | vfd->debug = debug; |
730947bc | 1304 | vfd->v4l2_dev = &dev->v4l2_dev; |
f2ba5a0b | 1305 | vfd->queue = q; |
b1a873a3 | 1306 | set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags); |
e007a325 PO |
1307 | |
1308 | /* | |
1309 | * Provide a mutex to v4l2 core. It will be used to protect | |
1310 | * all fops and v4l2 ioctls. | |
1311 | */ | |
fedc6c81 | 1312 | vfd->lock = &dev->mutex; |
70bd97ae | 1313 | video_set_drvdata(vfd, dev); |
55712ff7 | 1314 | |
5ab6c9af HV |
1315 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr); |
1316 | if (ret < 0) | |
70bd97ae | 1317 | goto unreg_dev; |
980d4f17 | 1318 | |
5ab6c9af HV |
1319 | /* Now that everything is fine, let's add it to device list */ |
1320 | list_add_tail(&dev->vivi_devlist, &vivi_devlist); | |
980d4f17 | 1321 | |
38c7c036 LP |
1322 | v4l2_info(&dev->v4l2_dev, "V4L2 device registered as %s\n", |
1323 | video_device_node_name(vfd)); | |
5ab6c9af HV |
1324 | return 0; |
1325 | ||
5ab6c9af | 1326 | unreg_dev: |
7e996afa | 1327 | v4l2_ctrl_handler_free(hdl); |
5ab6c9af HV |
1328 | v4l2_device_unregister(&dev->v4l2_dev); |
1329 | free_dev: | |
1330 | kfree(dev); | |
1331 | return ret; | |
1332 | } | |
f905c442 | 1333 | |
5ab6c9af HV |
1334 | /* This routine allocates from 1 to n_devs virtual drivers. |
1335 | ||
1336 | The real maximum number of virtual drivers will depend on how many drivers | |
1337 | will succeed. This is limited to the maximum number of devices that | |
1338 | videodev supports, which is equal to VIDEO_NUM_DEVICES. | |
1339 | */ | |
1340 | static int __init vivi_init(void) | |
1341 | { | |
730947bc | 1342 | const struct font_desc *font = find_font("VGA8x16"); |
9185cbfc | 1343 | int ret = 0, i; |
5ab6c9af | 1344 | |
730947bc HV |
1345 | if (font == NULL) { |
1346 | printk(KERN_ERR "vivi: could not find font\n"); | |
1347 | return -ENODEV; | |
1348 | } | |
1349 | font8x16 = font->data; | |
1350 | ||
5ab6c9af HV |
1351 | if (n_devs <= 0) |
1352 | n_devs = 1; | |
1353 | ||
1354 | for (i = 0; i < n_devs; i++) { | |
1355 | ret = vivi_create_instance(i); | |
1356 | if (ret) { | |
1357 | /* If some instantiations succeeded, keep driver */ | |
1358 | if (i) | |
1359 | ret = 0; | |
1360 | break; | |
1361 | } | |
55712ff7 | 1362 | } |
f905c442 | 1363 | |
55712ff7 | 1364 | if (ret < 0) { |
730947bc | 1365 | printk(KERN_ERR "vivi: error %d while loading driver\n", ret); |
5ab6c9af HV |
1366 | return ret; |
1367 | } | |
1368 | ||
1369 | printk(KERN_INFO "Video Technology Magazine Virtual Video " | |
1990d50b MCC |
1370 | "Capture Board ver %s successfully loaded.\n", |
1371 | VIVI_VERSION); | |
980d4f17 | 1372 | |
5ab6c9af HV |
1373 | /* n_devs will reflect the actual number of allocated devices */ |
1374 | n_devs = i; | |
980d4f17 | 1375 | |
1e6dd65e MCC |
1376 | return ret; |
1377 | } | |
1378 | ||
1379 | static void __exit vivi_exit(void) | |
1380 | { | |
55712ff7 | 1381 | vivi_release(); |
1e6dd65e MCC |
1382 | } |
1383 | ||
1384 | module_init(vivi_init); | |
1385 | module_exit(vivi_exit); |