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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / media / pci / cx18 / cx18-ioctl.c
blobfa57e12f2ac8f0d94c3b178263afd43d25fb30d1
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * cx18 ioctl system call
4 *
5 * Derived from ivtv-ioctl.c
6 *
7 * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
8 * Copyright (C) 2008 Andy Walls <awalls@md.metrocast.net>
9 */
10
11 #include "cx18-driver.h"
12 #include "cx18-io.h"
13 #include "cx18-version.h"
14 #include "cx18-mailbox.h"
15 #include "cx18-i2c.h"
16 #include "cx18-queue.h"
17 #include "cx18-fileops.h"
18 #include "cx18-vbi.h"
19 #include "cx18-audio.h"
20 #include "cx18-video.h"
21 #include "cx18-streams.h"
22 #include "cx18-ioctl.h"
23 #include "cx18-gpio.h"
24 #include "cx18-controls.h"
25 #include "cx18-cards.h"
26 #include "cx18-av-core.h"
27 #include <media/tveeprom.h>
28 #include <media/v4l2-event.h>
29
30 u16 cx18_service2vbi(int type)
31 {
32 switch (type) {
33 case V4L2_SLICED_TELETEXT_B:
34 return CX18_SLICED_TYPE_TELETEXT_B;
35 case V4L2_SLICED_CAPTION_525:
36 return CX18_SLICED_TYPE_CAPTION_525;
37 case V4L2_SLICED_WSS_625:
38 return CX18_SLICED_TYPE_WSS_625;
39 case V4L2_SLICED_VPS:
40 return CX18_SLICED_TYPE_VPS;
41 default:
42 return 0;
43 }
44 }
45
46 /* Check if VBI services are allowed on the (field, line) for the video std */
47 static int valid_service_line(int field, int line, int is_pal)
48 {
49 return (is_pal && line >= 6 &&
50 ((field == 0 && line <= 23) || (field == 1 && line <= 22))) ||
51 (!is_pal && line >= 10 && line < 22);
52 }
53
54 /*
55 * For a (field, line, std) and inbound potential set of services for that line,
56 * return the first valid service of those passed in the incoming set for that
57 * line in priority order:
58 * CC, VPS, or WSS over TELETEXT for well known lines
59 * TELETEXT, before VPS, before CC, before WSS, for other lines
60 */
61 static u16 select_service_from_set(int field, int line, u16 set, int is_pal)
62 {
63 u16 valid_set = (is_pal ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525);
64 int i;
65
66 set = set & valid_set;
67 if (set == 0 || !valid_service_line(field, line, is_pal))
68 return 0;
69 if (!is_pal) {
70 if (line == 21 && (set & V4L2_SLICED_CAPTION_525))
71 return V4L2_SLICED_CAPTION_525;
72 } else {
73 if (line == 16 && field == 0 && (set & V4L2_SLICED_VPS))
74 return V4L2_SLICED_VPS;
75 if (line == 23 && field == 0 && (set & V4L2_SLICED_WSS_625))
76 return V4L2_SLICED_WSS_625;
77 if (line == 23)
78 return 0;
79 }
80 for (i = 0; i < 32; i++) {
81 if (BIT(i) & set)
82 return 1 << i;
83 }
84 return 0;
85 }
86
87 /*
88 * Expand the service_set of *fmt into valid service_lines for the std,
89 * and clear the passed in fmt->service_set
90 */
91 void cx18_expand_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal)
92 {
93 u16 set = fmt->service_set;
94 int f, l;
95
96 fmt->service_set = 0;
97 for (f = 0; f < 2; f++) {
98 for (l = 0; l < 24; l++)
99 fmt->service_lines[f][l] = select_service_from_set(f, l, set, is_pal);
100 }
101 }
102
103 /*
104 * Sanitize the service_lines in *fmt per the video std, and return 1
105 * if any service_line is left as valid after santization
106 */
107 static int check_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal)
108 {
109 int f, l;
110 u16 set = 0;
111
112 for (f = 0; f < 2; f++) {
113 for (l = 0; l < 24; l++) {
114 fmt->service_lines[f][l] = select_service_from_set(f, l, fmt->service_lines[f][l], is_pal);
115 set |= fmt->service_lines[f][l];
116 }
117 }
118 return set != 0;
119 }
120
121 /* Compute the service_set from the assumed valid service_lines of *fmt */
122 u16 cx18_get_service_set(struct v4l2_sliced_vbi_format *fmt)
123 {
124 int f, l;
125 u16 set = 0;
126
127 for (f = 0; f < 2; f++) {
128 for (l = 0; l < 24; l++)
129 set |= fmt->service_lines[f][l];
130 }
131 return set;
132 }
133
134 static int cx18_g_fmt_vid_cap(struct file *file, void *fh,
135 struct v4l2_format *fmt)
136 {
137 struct cx18_open_id *id = fh2id(fh);
138 struct cx18 *cx = id->cx;
139 struct cx18_stream *s = &cx->streams[id->type];
140 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
141
142 pixfmt->width = cx->cxhdl.width;
143 pixfmt->height = cx->cxhdl.height;
144 pixfmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
145 pixfmt->field = V4L2_FIELD_INTERLACED;
146 if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
147 pixfmt->pixelformat = s->pixelformat;
148 pixfmt->sizeimage = s->vb_bytes_per_frame;
149 pixfmt->bytesperline = s->vb_bytes_per_line;
150 } else {
151 pixfmt->pixelformat = V4L2_PIX_FMT_MPEG;
152 pixfmt->sizeimage = 128 * 1024;
153 pixfmt->bytesperline = 0;
154 }
155 return 0;
156 }
157
158 static int cx18_g_fmt_vbi_cap(struct file *file, void *fh,
159 struct v4l2_format *fmt)
160 {
161 struct cx18 *cx = fh2id(fh)->cx;
162 struct v4l2_vbi_format *vbifmt = &fmt->fmt.vbi;
163
164 vbifmt->sampling_rate = 27000000;
165 vbifmt->offset = 248; /* FIXME - slightly wrong for both 50 & 60 Hz */
166 vbifmt->samples_per_line = VBI_ACTIVE_SAMPLES - 4;
167 vbifmt->sample_format = V4L2_PIX_FMT_GREY;
168 vbifmt->start[0] = cx->vbi.start[0];
169 vbifmt->start[1] = cx->vbi.start[1];
170 vbifmt->count[0] = vbifmt->count[1] = cx->vbi.count;
171 vbifmt->flags = 0;
172 vbifmt->reserved[0] = 0;
173 vbifmt->reserved[1] = 0;
174 return 0;
175 }
176
177 static int cx18_g_fmt_sliced_vbi_cap(struct file *file, void *fh,
178 struct v4l2_format *fmt)
179 {
180 struct cx18 *cx = fh2id(fh)->cx;
181 struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
182
183 /* sane, V4L2 spec compliant, defaults */
184 vbifmt->reserved[0] = 0;
185 vbifmt->reserved[1] = 0;
186 vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
187 memset(vbifmt->service_lines, 0, sizeof(vbifmt->service_lines));
188 vbifmt->service_set = 0;
189
190 /*
191 * Fetch the configured service_lines and total service_set from the
192 * digitizer/slicer. Note, cx18_av_vbi() wipes the passed in
193 * fmt->fmt.sliced under valid calling conditions
194 */
195 if (v4l2_subdev_call(cx->sd_av, vbi, g_sliced_fmt, &fmt->fmt.sliced))
196 return -EINVAL;
197
198 vbifmt->service_set = cx18_get_service_set(vbifmt);
199 return 0;
200 }
201
202 static int cx18_try_fmt_vid_cap(struct file *file, void *fh,
203 struct v4l2_format *fmt)
204 {
205 struct cx18_open_id *id = fh2id(fh);
206 struct cx18 *cx = id->cx;
207 int w = fmt->fmt.pix.width;
208 int h = fmt->fmt.pix.height;
209 int min_h = 2;
210
211 w = min(w, 720);
212 w = max(w, 2);
213 if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
214 /* YUV height must be a multiple of 32 */
215 h &= ~0x1f;
216 min_h = 32;
217 }
218 h = min(h, cx->is_50hz ? 576 : 480);
219 h = max(h, min_h);
220
221 fmt->fmt.pix.width = w;
222 fmt->fmt.pix.height = h;
223 return 0;
224 }
225
226 static int cx18_try_fmt_vbi_cap(struct file *file, void *fh,
227 struct v4l2_format *fmt)
228 {
229 return cx18_g_fmt_vbi_cap(file, fh, fmt);
230 }
231
232 static int cx18_try_fmt_sliced_vbi_cap(struct file *file, void *fh,
233 struct v4l2_format *fmt)
234 {
235 struct cx18 *cx = fh2id(fh)->cx;
236 struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
237
238 vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
239 vbifmt->reserved[0] = 0;
240 vbifmt->reserved[1] = 0;
241
242 /* If given a service set, expand it validly & clear passed in set */
243 if (vbifmt->service_set)
244 cx18_expand_service_set(vbifmt, cx->is_50hz);
245 /* Sanitize the service_lines, and compute the new set if any valid */
246 if (check_service_set(vbifmt, cx->is_50hz))
247 vbifmt->service_set = cx18_get_service_set(vbifmt);
248 return 0;
249 }
250
251 static int cx18_s_fmt_vid_cap(struct file *file, void *fh,
252 struct v4l2_format *fmt)
253 {
254 struct cx18_open_id *id = fh2id(fh);
255 struct cx18 *cx = id->cx;
256 struct v4l2_subdev_format format = {
257 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
258 };
259 struct cx18_stream *s = &cx->streams[id->type];
260 int ret;
261 int w, h;
262
263 ret = cx18_try_fmt_vid_cap(file, fh, fmt);
264 if (ret)
265 return ret;
266 w = fmt->fmt.pix.width;
267 h = fmt->fmt.pix.height;
268
269 if (cx->cxhdl.width == w && cx->cxhdl.height == h &&
270 s->pixelformat == fmt->fmt.pix.pixelformat)
271 return 0;
272
273 if (atomic_read(&cx->ana_capturing) > 0)
274 return -EBUSY;
275
276 s->pixelformat = fmt->fmt.pix.pixelformat;
277 /* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
278 UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */
279 if (s->pixelformat == V4L2_PIX_FMT_HM12) {
280 s->vb_bytes_per_frame = h * 720 * 3 / 2;
281 s->vb_bytes_per_line = 720; /* First plane */
282 } else {
283 s->vb_bytes_per_frame = h * 720 * 2;
284 s->vb_bytes_per_line = 1440; /* Packed */
285 }
286
287 format.format.width = cx->cxhdl.width = w;
288 format.format.height = cx->cxhdl.height = h;
289 format.format.code = MEDIA_BUS_FMT_FIXED;
290 v4l2_subdev_call(cx->sd_av, pad, set_fmt, NULL, &format);
291 return cx18_g_fmt_vid_cap(file, fh, fmt);
292 }
293
294 static int cx18_s_fmt_vbi_cap(struct file *file, void *fh,
295 struct v4l2_format *fmt)
296 {
297 struct cx18_open_id *id = fh2id(fh);
298 struct cx18 *cx = id->cx;
299 int ret;
300
301 /*
302 * Changing the Encoder's Raw VBI parameters won't have any effect
303 * if any analog capture is ongoing
304 */
305 if (!cx18_raw_vbi(cx) && atomic_read(&cx->ana_capturing) > 0)
306 return -EBUSY;
307
308 /*
309 * Set the digitizer registers for raw active VBI.
310 * Note cx18_av_vbi_wipes out a lot of the passed in fmt under valid
311 * calling conditions
312 */
313 ret = v4l2_subdev_call(cx->sd_av, vbi, s_raw_fmt, &fmt->fmt.vbi);
314 if (ret)
315 return ret;
316
317 /* Store our new v4l2 (non-)sliced VBI state */
318 cx->vbi.sliced_in->service_set = 0;
319 cx->vbi.in.type = V4L2_BUF_TYPE_VBI_CAPTURE;
320
321 return cx18_g_fmt_vbi_cap(file, fh, fmt);
322 }
323
324 static int cx18_s_fmt_sliced_vbi_cap(struct file *file, void *fh,
325 struct v4l2_format *fmt)
326 {
327 struct cx18_open_id *id = fh2id(fh);
328 struct cx18 *cx = id->cx;
329 int ret;
330 struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
331
332 cx18_try_fmt_sliced_vbi_cap(file, fh, fmt);
333
334 /*
335 * Changing the Encoder's Raw VBI parameters won't have any effect
336 * if any analog capture is ongoing
337 */
338 if (cx18_raw_vbi(cx) && atomic_read(&cx->ana_capturing) > 0)
339 return -EBUSY;
340
341 /*
342 * Set the service_lines requested in the digitizer/slicer registers.
343 * Note, cx18_av_vbi() wipes some "impossible" service lines in the
344 * passed in fmt->fmt.sliced under valid calling conditions
345 */
346 ret = v4l2_subdev_call(cx->sd_av, vbi, s_sliced_fmt, &fmt->fmt.sliced);
347 if (ret)
348 return ret;
349 /* Store our current v4l2 sliced VBI settings */
350 cx->vbi.in.type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
351 memcpy(cx->vbi.sliced_in, vbifmt, sizeof(*cx->vbi.sliced_in));
352 return 0;
353 }
354
355 #ifdef CONFIG_VIDEO_ADV_DEBUG
356 static int cx18_g_register(struct file *file, void *fh,
357 struct v4l2_dbg_register *reg)
358 {
359 struct cx18 *cx = fh2id(fh)->cx;
360
361 if (reg->reg & 0x3)
362 return -EINVAL;
363 if (reg->reg >= CX18_MEM_OFFSET + CX18_MEM_SIZE)
364 return -EINVAL;
365 reg->size = 4;
366 reg->val = cx18_read_enc(cx, reg->reg);
367 return 0;
368 }
369
370 static int cx18_s_register(struct file *file, void *fh,
371 const struct v4l2_dbg_register *reg)
372 {
373 struct cx18 *cx = fh2id(fh)->cx;
374
375 if (reg->reg & 0x3)
376 return -EINVAL;
377 if (reg->reg >= CX18_MEM_OFFSET + CX18_MEM_SIZE)
378 return -EINVAL;
379 cx18_write_enc(cx, reg->val, reg->reg);
380 return 0;
381 }
382 #endif
383
384 static int cx18_querycap(struct file *file, void *fh,
385 struct v4l2_capability *vcap)
386 {
387 struct cx18_open_id *id = fh2id(fh);
388 struct cx18 *cx = id->cx;
389
390 strscpy(vcap->driver, CX18_DRIVER_NAME, sizeof(vcap->driver));
391 strscpy(vcap->card, cx->card_name, sizeof(vcap->card));
392 snprintf(vcap->bus_info, sizeof(vcap->bus_info),
393 "PCI:%s", pci_name(cx->pci_dev));
394 vcap->capabilities = cx->v4l2_cap | V4L2_CAP_DEVICE_CAPS;
395 return 0;
396 }
397
398 static int cx18_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
399 {
400 struct cx18 *cx = fh2id(fh)->cx;
401
402 return cx18_get_audio_input(cx, vin->index, vin);
403 }
404
405 static int cx18_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
406 {
407 struct cx18 *cx = fh2id(fh)->cx;
408
409 vin->index = cx->audio_input;
410 return cx18_get_audio_input(cx, vin->index, vin);
411 }
412
413 static int cx18_s_audio(struct file *file, void *fh, const struct v4l2_audio *vout)
414 {
415 struct cx18 *cx = fh2id(fh)->cx;
416
417 if (vout->index >= cx->nof_audio_inputs)
418 return -EINVAL;
419 cx->audio_input = vout->index;
420 cx18_audio_set_io(cx);
421 return 0;
422 }
423
424 static int cx18_enum_input(struct file *file, void *fh, struct v4l2_input *vin)
425 {
426 struct cx18 *cx = fh2id(fh)->cx;
427
428 /* set it to defaults from our table */
429 return cx18_get_input(cx, vin->index, vin);
430 }
431
432 static int cx18_g_pixelaspect(struct file *file, void *fh,
433 int type, struct v4l2_fract *f)
434 {
435 struct cx18 *cx = fh2id(fh)->cx;
436
437 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
438 return -EINVAL;
439
440 f->numerator = cx->is_50hz ? 54 : 11;
441 f->denominator = cx->is_50hz ? 59 : 10;
442 return 0;
443 }
444
445 static int cx18_g_selection(struct file *file, void *fh,
446 struct v4l2_selection *sel)
447 {
448 struct cx18 *cx = fh2id(fh)->cx;
449
450 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
451 return -EINVAL;
452 switch (sel->target) {
453 case V4L2_SEL_TGT_CROP_BOUNDS:
454 case V4L2_SEL_TGT_CROP_DEFAULT:
455 sel->r.top = sel->r.left = 0;
456 sel->r.width = 720;
457 sel->r.height = cx->is_50hz ? 576 : 480;
458 break;
459 default:
460 return -EINVAL;
461 }
462 return 0;
463 }
464
465 static int cx18_enum_fmt_vid_cap(struct file *file, void *fh,
466 struct v4l2_fmtdesc *fmt)
467 {
468 static const struct v4l2_fmtdesc formats[] = {
469 { 0, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
470 "HM12 (YUV 4:1:1)", V4L2_PIX_FMT_HM12, { 0, 0, 0, 0 }
471 },
472 { 1, V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FMT_FLAG_COMPRESSED,
473 "MPEG", V4L2_PIX_FMT_MPEG, { 0, 0, 0, 0 }
474 },
475 { 2, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
476 "UYVY 4:2:2", V4L2_PIX_FMT_UYVY, { 0, 0, 0, 0 }
477 },
478 };
479
480 if (fmt->index > ARRAY_SIZE(formats) - 1)
481 return -EINVAL;
482 *fmt = formats[fmt->index];
483 return 0;
484 }
485
486 static int cx18_g_input(struct file *file, void *fh, unsigned int *i)
487 {
488 struct cx18 *cx = fh2id(fh)->cx;
489
490 *i = cx->active_input;
491 return 0;
492 }
493
494 int cx18_s_input(struct file *file, void *fh, unsigned int inp)
495 {
496 struct cx18_open_id *id = fh2id(fh);
497 struct cx18 *cx = id->cx;
498 v4l2_std_id std = V4L2_STD_ALL;
499 const struct cx18_card_video_input *card_input =
500 cx->card->video_inputs + inp;
501
502 if (inp >= cx->nof_inputs)
503 return -EINVAL;
504
505 if (inp == cx->active_input) {
506 CX18_DEBUG_INFO("Input unchanged\n");
507 return 0;
508 }
509
510 CX18_DEBUG_INFO("Changing input from %d to %d\n",
511 cx->active_input, inp);
512
513 cx->active_input = inp;
514 /* Set the audio input to whatever is appropriate for the input type. */
515 cx->audio_input = cx->card->video_inputs[inp].audio_index;
516 if (card_input->video_type == V4L2_INPUT_TYPE_TUNER)
517 std = cx->tuner_std;
518 cx->streams[CX18_ENC_STREAM_TYPE_MPG].video_dev.tvnorms = std;
519 cx->streams[CX18_ENC_STREAM_TYPE_YUV].video_dev.tvnorms = std;
520 cx->streams[CX18_ENC_STREAM_TYPE_VBI].video_dev.tvnorms = std;
521
522 /* prevent others from messing with the streams until
523 we're finished changing inputs. */
524 cx18_mute(cx);
525 cx18_video_set_io(cx);
526 cx18_audio_set_io(cx);
527 cx18_unmute(cx);
528 return 0;
529 }
530
531 static int cx18_g_frequency(struct file *file, void *fh,
532 struct v4l2_frequency *vf)
533 {
534 struct cx18 *cx = fh2id(fh)->cx;
535
536 if (vf->tuner != 0)
537 return -EINVAL;
538
539 cx18_call_all(cx, tuner, g_frequency, vf);
540 return 0;
541 }
542
543 int cx18_s_frequency(struct file *file, void *fh, const struct v4l2_frequency *vf)
544 {
545 struct cx18_open_id *id = fh2id(fh);
546 struct cx18 *cx = id->cx;
547
548 if (vf->tuner != 0)
549 return -EINVAL;
550
551 cx18_mute(cx);
552 CX18_DEBUG_INFO("v4l2 ioctl: set frequency %d\n", vf->frequency);
553 cx18_call_all(cx, tuner, s_frequency, vf);
554 cx18_unmute(cx);
555 return 0;
556 }
557
558 static int cx18_g_std(struct file *file, void *fh, v4l2_std_id *std)
559 {
560 struct cx18 *cx = fh2id(fh)->cx;
561
562 *std = cx->std;
563 return 0;
564 }
565
566 int cx18_s_std(struct file *file, void *fh, v4l2_std_id std)
567 {
568 struct cx18_open_id *id = fh2id(fh);
569 struct cx18 *cx = id->cx;
570
571 if ((std & V4L2_STD_ALL) == 0)
572 return -EINVAL;
573
574 if (std == cx->std)
575 return 0;
576
577 if (test_bit(CX18_F_I_RADIO_USER, &cx->i_flags) ||
578 atomic_read(&cx->ana_capturing) > 0) {
579 /* Switching standard would turn off the radio or mess
580 with already running streams, prevent that by
581 returning EBUSY. */
582 return -EBUSY;
583 }
584
585 cx->std = std;
586 cx->is_60hz = (std & V4L2_STD_525_60) ? 1 : 0;
587 cx->is_50hz = !cx->is_60hz;
588 cx2341x_handler_set_50hz(&cx->cxhdl, cx->is_50hz);
589 cx->cxhdl.width = 720;
590 cx->cxhdl.height = cx->is_50hz ? 576 : 480;
591 cx->vbi.count = cx->is_50hz ? 18 : 12;
592 cx->vbi.start[0] = cx->is_50hz ? 6 : 10;
593 cx->vbi.start[1] = cx->is_50hz ? 318 : 273;
594 CX18_DEBUG_INFO("Switching standard to %llx.\n",
595 (unsigned long long) cx->std);
596
597 /* Tuner */
598 cx18_call_all(cx, video, s_std, cx->std);
599 return 0;
600 }
601
602 static int cx18_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
603 {
604 struct cx18_open_id *id = fh2id(fh);
605 struct cx18 *cx = id->cx;
606
607 if (vt->index != 0)
608 return -EINVAL;
609
610 cx18_call_all(cx, tuner, s_tuner, vt);
611 return 0;
612 }
613
614 static int cx18_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
615 {
616 struct cx18 *cx = fh2id(fh)->cx;
617
618 if (vt->index != 0)
619 return -EINVAL;
620
621 cx18_call_all(cx, tuner, g_tuner, vt);
622
623 if (vt->type == V4L2_TUNER_RADIO)
624 strscpy(vt->name, "cx18 Radio Tuner", sizeof(vt->name));
625 else
626 strscpy(vt->name, "cx18 TV Tuner", sizeof(vt->name));
627 return 0;
628 }
629
630 static int cx18_g_sliced_vbi_cap(struct file *file, void *fh,
631 struct v4l2_sliced_vbi_cap *cap)
632 {
633 struct cx18 *cx = fh2id(fh)->cx;
634 int set = cx->is_50hz ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525;
635 int f, l;
636
637 if (cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
638 return -EINVAL;
639
640 cap->service_set = 0;
641 for (f = 0; f < 2; f++) {
642 for (l = 0; l < 24; l++) {
643 if (valid_service_line(f, l, cx->is_50hz)) {
644 /*
645 * We can find all v4l2 supported vbi services
646 * for the standard, on a valid line for the std
647 */
648 cap->service_lines[f][l] = set;
649 cap->service_set |= set;
650 } else
651 cap->service_lines[f][l] = 0;
652 }
653 }
654 for (f = 0; f < 3; f++)
655 cap->reserved[f] = 0;
656 return 0;
657 }
658
659 static int _cx18_process_idx_data(struct cx18_buffer *buf,
660 struct v4l2_enc_idx *idx)
661 {
662 int consumed, remaining;
663 struct v4l2_enc_idx_entry *e_idx;
664 struct cx18_enc_idx_entry *e_buf;
665
666 /* Frame type lookup: 1=I, 2=P, 4=B */
667 static const int mapping[8] = {
668 -1, V4L2_ENC_IDX_FRAME_I, V4L2_ENC_IDX_FRAME_P,
669 -1, V4L2_ENC_IDX_FRAME_B, -1, -1, -1
670 };
671
672 /*
673 * Assumption here is that a buf holds an integral number of
674 * struct cx18_enc_idx_entry objects and is properly aligned.
675 * This is enforced by the module options on IDX buffer sizes.
676 */
677 remaining = buf->bytesused - buf->readpos;
678 consumed = 0;
679 e_idx = &idx->entry[idx->entries];
680 e_buf = (struct cx18_enc_idx_entry *) &buf->buf[buf->readpos];
681
682 while (remaining >= sizeof(struct cx18_enc_idx_entry) &&
683 idx->entries < V4L2_ENC_IDX_ENTRIES) {
684
685 e_idx->offset = (((u64) le32_to_cpu(e_buf->offset_high)) << 32)
686 | le32_to_cpu(e_buf->offset_low);
687
688 e_idx->pts = (((u64) (le32_to_cpu(e_buf->pts_high) & 1)) << 32)
689 | le32_to_cpu(e_buf->pts_low);
690
691 e_idx->length = le32_to_cpu(e_buf->length);
692
693 e_idx->flags = mapping[le32_to_cpu(e_buf->flags) & 0x7];
694
695 e_idx->reserved[0] = 0;
696 e_idx->reserved[1] = 0;
697
698 idx->entries++;
699 e_idx = &idx->entry[idx->entries];
700 e_buf++;
701
702 remaining -= sizeof(struct cx18_enc_idx_entry);
703 consumed += sizeof(struct cx18_enc_idx_entry);
704 }
705
706 /* Swallow any partial entries at the end, if there are any */
707 if (remaining > 0 && remaining < sizeof(struct cx18_enc_idx_entry))
708 consumed += remaining;
709
710 buf->readpos += consumed;
711 return consumed;
712 }
713
714 static int cx18_process_idx_data(struct cx18_stream *s, struct cx18_mdl *mdl,
715 struct v4l2_enc_idx *idx)
716 {
717 if (s->type != CX18_ENC_STREAM_TYPE_IDX)
718 return -EINVAL;
719
720 if (mdl->curr_buf == NULL)
721 mdl->curr_buf = list_first_entry(&mdl->buf_list,
722 struct cx18_buffer, list);
723
724 if (list_entry_is_past_end(mdl->curr_buf, &mdl->buf_list, list)) {
725 /*
726 * For some reason we've exhausted the buffers, but the MDL
727 * object still said some data was unread.
728 * Fix that and bail out.
729 */
730 mdl->readpos = mdl->bytesused;
731 return 0;
732 }
733
734 list_for_each_entry_from(mdl->curr_buf, &mdl->buf_list, list) {
735
736 /* Skip any empty buffers in the MDL */
737 if (mdl->curr_buf->readpos >= mdl->curr_buf->bytesused)
738 continue;
739
740 mdl->readpos += _cx18_process_idx_data(mdl->curr_buf, idx);
741
742 /* exit when MDL drained or request satisfied */
743 if (idx->entries >= V4L2_ENC_IDX_ENTRIES ||
744 mdl->curr_buf->readpos < mdl->curr_buf->bytesused ||
745 mdl->readpos >= mdl->bytesused)
746 break;
747 }
748 return 0;
749 }
750
751 static int cx18_g_enc_index(struct file *file, void *fh,
752 struct v4l2_enc_idx *idx)
753 {
754 struct cx18 *cx = fh2id(fh)->cx;
755 struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
756 s32 tmp;
757 struct cx18_mdl *mdl;
758
759 if (!cx18_stream_enabled(s)) /* Module options inhibited IDX stream */
760 return -EINVAL;
761
762 /* Compute the best case number of entries we can buffer */
763 tmp = s->buffers -
764 s->bufs_per_mdl * CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN;
765 if (tmp <= 0)
766 tmp = 1;
767 tmp = tmp * s->buf_size / sizeof(struct cx18_enc_idx_entry);
768
769 /* Fill out the header of the return structure */
770 idx->entries = 0;
771 idx->entries_cap = tmp;
772 memset(idx->reserved, 0, sizeof(idx->reserved));
773
774 /* Pull IDX MDLs and buffers from q_full and populate the entries */
775 do {
776 mdl = cx18_dequeue(s, &s->q_full);
777 if (mdl == NULL) /* No more IDX data right now */
778 break;
779
780 /* Extract the Index entry data from the MDL and buffers */
781 cx18_process_idx_data(s, mdl, idx);
782 if (mdl->readpos < mdl->bytesused) {
783 /* We finished with data remaining, push the MDL back */
784 cx18_push(s, mdl, &s->q_full);
785 break;
786 }
787
788 /* We drained this MDL, schedule it to go to the firmware */
789 cx18_enqueue(s, mdl, &s->q_free);
790
791 } while (idx->entries < V4L2_ENC_IDX_ENTRIES);
792
793 /* Tell the work handler to send free IDX MDLs to the firmware */
794 cx18_stream_load_fw_queue(s);
795 return 0;
796 }
797
798 static struct videobuf_queue *cx18_vb_queue(struct cx18_open_id *id)
799 {
800 struct videobuf_queue *q = NULL;
801 struct cx18 *cx = id->cx;
802 struct cx18_stream *s = &cx->streams[id->type];
803
804 switch (s->vb_type) {
805 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
806 q = &s->vbuf_q;
807 break;
808 case V4L2_BUF_TYPE_VBI_CAPTURE:
809 break;
810 default:
811 break;
812 }
813 return q;
814 }
815
816 static int cx18_streamon(struct file *file, void *priv,
817 enum v4l2_buf_type type)
818 {
819 struct cx18_open_id *id = file->private_data;
820 struct cx18 *cx = id->cx;
821 struct cx18_stream *s = &cx->streams[id->type];
822
823 /* Start the hardware only if we're the video device */
824 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
825 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
826 return -EINVAL;
827
828 if (id->type != CX18_ENC_STREAM_TYPE_YUV)
829 return -EINVAL;
830
831 /* Establish a buffer timeout */
832 mod_timer(&s->vb_timeout, msecs_to_jiffies(2000) + jiffies);
833
834 return videobuf_streamon(cx18_vb_queue(id));
835 }
836
837 static int cx18_streamoff(struct file *file, void *priv,
838 enum v4l2_buf_type type)
839 {
840 struct cx18_open_id *id = file->private_data;
841 struct cx18 *cx = id->cx;
842 struct cx18_stream *s = &cx->streams[id->type];
843
844 /* Start the hardware only if we're the video device */
845 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
846 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
847 return -EINVAL;
848
849 if (id->type != CX18_ENC_STREAM_TYPE_YUV)
850 return -EINVAL;
851
852 return videobuf_streamoff(cx18_vb_queue(id));
853 }
854
855 static int cx18_reqbufs(struct file *file, void *priv,
856 struct v4l2_requestbuffers *rb)
857 {
858 struct cx18_open_id *id = file->private_data;
859 struct cx18 *cx = id->cx;
860 struct cx18_stream *s = &cx->streams[id->type];
861
862 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
863 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
864 return -EINVAL;
865
866 return videobuf_reqbufs(cx18_vb_queue(id), rb);
867 }
868
869 static int cx18_querybuf(struct file *file, void *priv,
870 struct v4l2_buffer *b)
871 {
872 struct cx18_open_id *id = file->private_data;
873 struct cx18 *cx = id->cx;
874 struct cx18_stream *s = &cx->streams[id->type];
875
876 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
877 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
878 return -EINVAL;
879
880 return videobuf_querybuf(cx18_vb_queue(id), b);
881 }
882
883 static int cx18_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
884 {
885 struct cx18_open_id *id = file->private_data;
886 struct cx18 *cx = id->cx;
887 struct cx18_stream *s = &cx->streams[id->type];
888
889 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
890 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
891 return -EINVAL;
892
893 return videobuf_qbuf(cx18_vb_queue(id), b);
894 }
895
896 static int cx18_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
897 {
898 struct cx18_open_id *id = file->private_data;
899 struct cx18 *cx = id->cx;
900 struct cx18_stream *s = &cx->streams[id->type];
901
902 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
903 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
904 return -EINVAL;
905
906 return videobuf_dqbuf(cx18_vb_queue(id), b, file->f_flags & O_NONBLOCK);
907 }
908
909 static int cx18_encoder_cmd(struct file *file, void *fh,
910 struct v4l2_encoder_cmd *enc)
911 {
912 struct cx18_open_id *id = fh2id(fh);
913 struct cx18 *cx = id->cx;
914 u32 h;
915
916 switch (enc->cmd) {
917 case V4L2_ENC_CMD_START:
918 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_START\n");
919 enc->flags = 0;
920 return cx18_start_capture(id);
921
922 case V4L2_ENC_CMD_STOP:
923 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_STOP\n");
924 enc->flags &= V4L2_ENC_CMD_STOP_AT_GOP_END;
925 cx18_stop_capture(id,
926 enc->flags & V4L2_ENC_CMD_STOP_AT_GOP_END);
927 break;
928
929 case V4L2_ENC_CMD_PAUSE:
930 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_PAUSE\n");
931 enc->flags = 0;
932 if (!atomic_read(&cx->ana_capturing))
933 return -EPERM;
934 if (test_and_set_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags))
935 return 0;
936 h = cx18_find_handle(cx);
937 if (h == CX18_INVALID_TASK_HANDLE) {
938 CX18_ERR("Can't find valid task handle for V4L2_ENC_CMD_PAUSE\n");
939 return -EBADFD;
940 }
941 cx18_mute(cx);
942 cx18_vapi(cx, CX18_CPU_CAPTURE_PAUSE, 1, h);
943 break;
944
945 case V4L2_ENC_CMD_RESUME:
946 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_RESUME\n");
947 enc->flags = 0;
948 if (!atomic_read(&cx->ana_capturing))
949 return -EPERM;
950 if (!test_and_clear_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags))
951 return 0;
952 h = cx18_find_handle(cx);
953 if (h == CX18_INVALID_TASK_HANDLE) {
954 CX18_ERR("Can't find valid task handle for V4L2_ENC_CMD_RESUME\n");
955 return -EBADFD;
956 }
957 cx18_vapi(cx, CX18_CPU_CAPTURE_RESUME, 1, h);
958 cx18_unmute(cx);
959 break;
960
961 default:
962 CX18_DEBUG_IOCTL("Unknown cmd %d\n", enc->cmd);
963 return -EINVAL;
964 }
965 return 0;
966 }
967
968 static int cx18_try_encoder_cmd(struct file *file, void *fh,
969 struct v4l2_encoder_cmd *enc)
970 {
971 struct cx18 *cx = fh2id(fh)->cx;
972
973 switch (enc->cmd) {
974 case V4L2_ENC_CMD_START:
975 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_START\n");
976 enc->flags = 0;
977 break;
978
979 case V4L2_ENC_CMD_STOP:
980 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_STOP\n");
981 enc->flags &= V4L2_ENC_CMD_STOP_AT_GOP_END;
982 break;
983
984 case V4L2_ENC_CMD_PAUSE:
985 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_PAUSE\n");
986 enc->flags = 0;
987 break;
988
989 case V4L2_ENC_CMD_RESUME:
990 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_RESUME\n");
991 enc->flags = 0;
992 break;
993
994 default:
995 CX18_DEBUG_IOCTL("Unknown cmd %d\n", enc->cmd);
996 return -EINVAL;
997 }
998 return 0;
999 }
1000
1001 static int cx18_log_status(struct file *file, void *fh)
1002 {
1003 struct cx18 *cx = fh2id(fh)->cx;
1004 struct v4l2_input vidin;
1005 struct v4l2_audio audin;
1006 int i;
1007
1008 CX18_INFO("Version: %s Card: %s\n", CX18_VERSION, cx->card_name);
1009 if (cx->hw_flags & CX18_HW_TVEEPROM) {
1010 struct tveeprom tv;
1011
1012 cx18_read_eeprom(cx, &tv);
1013 }
1014 cx18_call_all(cx, core, log_status);
1015 cx18_get_input(cx, cx->active_input, &vidin);
1016 cx18_get_audio_input(cx, cx->audio_input, &audin);
1017 CX18_INFO("Video Input: %s\n", vidin.name);
1018 CX18_INFO("Audio Input: %s\n", audin.name);
1019 mutex_lock(&cx->gpio_lock);
1020 CX18_INFO("GPIO: direction 0x%08x, value 0x%08x\n",
1021 cx->gpio_dir, cx->gpio_val);
1022 mutex_unlock(&cx->gpio_lock);
1023 CX18_INFO("Tuner: %s\n",
1024 test_bit(CX18_F_I_RADIO_USER, &cx->i_flags) ? "Radio" : "TV");
1025 v4l2_ctrl_handler_log_status(&cx->cxhdl.hdl, cx->v4l2_dev.name);
1026 CX18_INFO("Status flags: 0x%08lx\n", cx->i_flags);
1027 for (i = 0; i < CX18_MAX_STREAMS; i++) {
1028 struct cx18_stream *s = &cx->streams[i];
1029
1030 if (s->video_dev.v4l2_dev == NULL || s->buffers == 0)
1031 continue;
1032 CX18_INFO("Stream %s: status 0x%04lx, %d%% of %d KiB (%d buffers) in use\n",
1033 s->name, s->s_flags,
1034 atomic_read(&s->q_full.depth) * s->bufs_per_mdl * 100
1035 / s->buffers,
1036 (s->buffers * s->buf_size) / 1024, s->buffers);
1037 }
1038 CX18_INFO("Read MPEG/VBI: %lld/%lld bytes\n",
1039 (long long)cx->mpg_data_received,
1040 (long long)cx->vbi_data_inserted);
1041 return 0;
1042 }
1043
1044 static long cx18_default(struct file *file, void *fh, bool valid_prio,
1045 unsigned int cmd, void *arg)
1046 {
1047 struct cx18 *cx = fh2id(fh)->cx;
1048
1049 switch (cmd) {
1050 case VIDIOC_INT_RESET: {
1051 u32 val = *(u32 *)arg;
1052
1053 if ((val == 0) || (val & 0x01))
1054 cx18_call_hw(cx, CX18_HW_GPIO_RESET_CTRL, core, reset,
1055 (u32) CX18_GPIO_RESET_Z8F0811);
1056 break;
1057 }
1058
1059 default:
1060 return -ENOTTY;
1061 }
1062 return 0;
1063 }
1064
1065 static const struct v4l2_ioctl_ops cx18_ioctl_ops = {
1066 .vidioc_querycap = cx18_querycap,
1067 .vidioc_s_audio = cx18_s_audio,
1068 .vidioc_g_audio = cx18_g_audio,
1069 .vidioc_enumaudio = cx18_enumaudio,
1070 .vidioc_enum_input = cx18_enum_input,
1071 .vidioc_g_pixelaspect = cx18_g_pixelaspect,
1072 .vidioc_g_selection = cx18_g_selection,
1073 .vidioc_g_input = cx18_g_input,
1074 .vidioc_s_input = cx18_s_input,
1075 .vidioc_g_frequency = cx18_g_frequency,
1076 .vidioc_s_frequency = cx18_s_frequency,
1077 .vidioc_s_tuner = cx18_s_tuner,
1078 .vidioc_g_tuner = cx18_g_tuner,
1079 .vidioc_g_enc_index = cx18_g_enc_index,
1080 .vidioc_g_std = cx18_g_std,
1081 .vidioc_s_std = cx18_s_std,
1082 .vidioc_log_status = cx18_log_status,
1083 .vidioc_enum_fmt_vid_cap = cx18_enum_fmt_vid_cap,
1084 .vidioc_encoder_cmd = cx18_encoder_cmd,
1085 .vidioc_try_encoder_cmd = cx18_try_encoder_cmd,
1086 .vidioc_g_fmt_vid_cap = cx18_g_fmt_vid_cap,
1087 .vidioc_g_fmt_vbi_cap = cx18_g_fmt_vbi_cap,
1088 .vidioc_g_fmt_sliced_vbi_cap = cx18_g_fmt_sliced_vbi_cap,
1089 .vidioc_s_fmt_vid_cap = cx18_s_fmt_vid_cap,
1090 .vidioc_s_fmt_vbi_cap = cx18_s_fmt_vbi_cap,
1091 .vidioc_s_fmt_sliced_vbi_cap = cx18_s_fmt_sliced_vbi_cap,
1092 .vidioc_try_fmt_vid_cap = cx18_try_fmt_vid_cap,
1093 .vidioc_try_fmt_vbi_cap = cx18_try_fmt_vbi_cap,
1094 .vidioc_try_fmt_sliced_vbi_cap = cx18_try_fmt_sliced_vbi_cap,
1095 .vidioc_g_sliced_vbi_cap = cx18_g_sliced_vbi_cap,
1096 #ifdef CONFIG_VIDEO_ADV_DEBUG
1097 .vidioc_g_register = cx18_g_register,
1098 .vidioc_s_register = cx18_s_register,
1099 #endif
1100 .vidioc_default = cx18_default,
1101 .vidioc_streamon = cx18_streamon,
1102 .vidioc_streamoff = cx18_streamoff,
1103 .vidioc_reqbufs = cx18_reqbufs,
1104 .vidioc_querybuf = cx18_querybuf,
1105 .vidioc_qbuf = cx18_qbuf,
1106 .vidioc_dqbuf = cx18_dqbuf,
1107 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1108 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1109 };
1110
1111 void cx18_set_funcs(struct video_device *vdev)
1112 {
1113 vdev->ioctl_ops = &cx18_ioctl_ops;
1114 }
Linux with added FPC-III support