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@kernel.org>
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 static const struct v4l2_fmtdesc cx18_formats_yuv[] = {
31 {
32 .index = 0,
33 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
34 .pixelformat = V4L2_PIX_FMT_NV12_16L16,
35 },
36 {
37 .index = 1,
38 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
39 .pixelformat = V4L2_PIX_FMT_UYVY,
40 },
41 };
42
43 static const struct v4l2_fmtdesc cx18_formats_mpeg[] = {
44 {
45 .index = 0,
46 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
47 .flags = V4L2_FMT_FLAG_COMPRESSED,
48 .pixelformat = V4L2_PIX_FMT_MPEG,
49 },
50 };
51
cx18_g_fmt_vid_cap(struct file * file,void * fh,struct v4l2_format * fmt)52 static int cx18_g_fmt_vid_cap(struct file *file, void *fh,
53 struct v4l2_format *fmt)
54 {
55 struct cx18_open_id *id = file2id(file);
56 struct cx18 *cx = id->cx;
57 struct cx18_stream *s = &cx->streams[id->type];
58 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
59
60 pixfmt->width = cx->cxhdl.width;
61 pixfmt->height = cx->cxhdl.height;
62 pixfmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
63 pixfmt->field = V4L2_FIELD_INTERLACED;
64 if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
65 pixfmt->pixelformat = s->pixelformat;
66 pixfmt->sizeimage = s->vb_bytes_per_frame;
67 pixfmt->bytesperline = s->vb_bytes_per_line;
68 } else {
69 pixfmt->pixelformat = V4L2_PIX_FMT_MPEG;
70 pixfmt->sizeimage = 128 * 1024;
71 pixfmt->bytesperline = 0;
72 }
73 return 0;
74 }
75
cx18_try_fmt_vid_cap(struct file * file,void * fh,struct v4l2_format * fmt)76 static int cx18_try_fmt_vid_cap(struct file *file, void *fh,
77 struct v4l2_format *fmt)
78 {
79 struct cx18_open_id *id = file2id(file);
80 struct cx18 *cx = id->cx;
81 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
82 int w = pixfmt->width;
83 int h = pixfmt->height;
84
85 w = min(w, 720);
86 w = max(w, 720 / 16);
87
88 h = min(h, cx->is_50hz ? 576 : 480);
89 h = max(h, (cx->is_50hz ? 576 : 480) / 8);
90
91 if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
92 if (pixfmt->pixelformat != V4L2_PIX_FMT_NV12_16L16 &&
93 pixfmt->pixelformat != V4L2_PIX_FMT_UYVY)
94 pixfmt->pixelformat = V4L2_PIX_FMT_UYVY;
95 /* YUV height must be a multiple of 32 */
96 h = round_up(h, 32);
97 /*
98 * HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
99 * UYUV YUV size is (Y=(h*720) + UV=(h*(720)))
100 */
101 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12_16L16) {
102 pixfmt->sizeimage = h * 720 * 3 / 2;
103 pixfmt->bytesperline = 720; /* First plane */
104 } else {
105 pixfmt->sizeimage = h * 720 * 2;
106 pixfmt->bytesperline = 1440; /* Packed */
107 }
108 } else {
109 pixfmt->pixelformat = V4L2_PIX_FMT_MPEG;
110 pixfmt->sizeimage = 128 * 1024;
111 pixfmt->bytesperline = 0;
112 }
113
114 pixfmt->width = w;
115 pixfmt->height = h;
116 pixfmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
117 pixfmt->field = V4L2_FIELD_INTERLACED;
118 return 0;
119 }
120
cx18_s_fmt_vid_cap(struct file * file,void * fh,struct v4l2_format * fmt)121 static int cx18_s_fmt_vid_cap(struct file *file, void *fh,
122 struct v4l2_format *fmt)
123 {
124 struct cx18_open_id *id = file2id(file);
125 struct cx18 *cx = id->cx;
126 struct v4l2_subdev_format format = {
127 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
128 };
129 struct cx18_stream *s = &cx->streams[id->type];
130 int ret;
131 int w, h;
132
133 ret = cx18_try_fmt_vid_cap(file, fh, fmt);
134 if (ret)
135 return ret;
136 w = fmt->fmt.pix.width;
137 h = fmt->fmt.pix.height;
138
139 if (cx->cxhdl.width == w && cx->cxhdl.height == h &&
140 s->pixelformat == fmt->fmt.pix.pixelformat)
141 return 0;
142
143 if (atomic_read(&cx->ana_capturing) > 0)
144 return -EBUSY;
145
146 s->pixelformat = fmt->fmt.pix.pixelformat;
147 s->vb_bytes_per_frame = fmt->fmt.pix.sizeimage;
148 s->vb_bytes_per_line = fmt->fmt.pix.bytesperline;
149
150 format.format.width = cx->cxhdl.width = w;
151 format.format.height = cx->cxhdl.height = h;
152 format.format.code = MEDIA_BUS_FMT_FIXED;
153 v4l2_subdev_call(cx->sd_av, pad, set_fmt, NULL, &format);
154 return cx18_g_fmt_vid_cap(file, fh, fmt);
155 }
156
cx18_service2vbi(int type)157 u16 cx18_service2vbi(int type)
158 {
159 switch (type) {
160 case V4L2_SLICED_TELETEXT_B:
161 return CX18_SLICED_TYPE_TELETEXT_B;
162 case V4L2_SLICED_CAPTION_525:
163 return CX18_SLICED_TYPE_CAPTION_525;
164 case V4L2_SLICED_WSS_625:
165 return CX18_SLICED_TYPE_WSS_625;
166 case V4L2_SLICED_VPS:
167 return CX18_SLICED_TYPE_VPS;
168 default:
169 return 0;
170 }
171 }
172
173 /* Check if VBI services are allowed on the (field, line) for the video std */
valid_service_line(int field,int line,int is_pal)174 static int valid_service_line(int field, int line, int is_pal)
175 {
176 return (is_pal && line >= 6 &&
177 ((field == 0 && line <= 23) || (field == 1 && line <= 22))) ||
178 (!is_pal && line >= 10 && line < 22);
179 }
180
181 /*
182 * For a (field, line, std) and inbound potential set of services for that line,
183 * return the first valid service of those passed in the incoming set for that
184 * line in priority order:
185 * CC, VPS, or WSS over TELETEXT for well known lines
186 * TELETEXT, before VPS, before CC, before WSS, for other lines
187 */
select_service_from_set(int field,int line,u16 set,int is_pal)188 static u16 select_service_from_set(int field, int line, u16 set, int is_pal)
189 {
190 u16 valid_set = (is_pal ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525);
191 int i;
192
193 set = set & valid_set;
194 if (set == 0 || !valid_service_line(field, line, is_pal))
195 return 0;
196 if (!is_pal) {
197 if (line == 21 && (set & V4L2_SLICED_CAPTION_525))
198 return V4L2_SLICED_CAPTION_525;
199 } else {
200 if (line == 16 && field == 0 && (set & V4L2_SLICED_VPS))
201 return V4L2_SLICED_VPS;
202 if (line == 23 && field == 0 && (set & V4L2_SLICED_WSS_625))
203 return V4L2_SLICED_WSS_625;
204 if (line == 23)
205 return 0;
206 }
207 for (i = 0; i < 32; i++) {
208 if (BIT(i) & set)
209 return 1 << i;
210 }
211 return 0;
212 }
213
214 /*
215 * Expand the service_set of *fmt into valid service_lines for the std,
216 * and clear the passed in fmt->service_set
217 */
cx18_expand_service_set(struct v4l2_sliced_vbi_format * fmt,int is_pal)218 void cx18_expand_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal)
219 {
220 u16 set = fmt->service_set;
221 int f, l;
222
223 fmt->service_set = 0;
224 for (f = 0; f < 2; f++) {
225 for (l = 0; l < 24; l++)
226 fmt->service_lines[f][l] = select_service_from_set(f, l, set, is_pal);
227 }
228 }
229
230 /*
231 * Sanitize the service_lines in *fmt per the video std, and return 1
232 * if any service_line is left as valid after santization
233 */
check_service_set(struct v4l2_sliced_vbi_format * fmt,int is_pal)234 static int check_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal)
235 {
236 int f, l;
237 u16 set = 0;
238
239 for (f = 0; f < 2; f++) {
240 for (l = 0; l < 24; l++) {
241 fmt->service_lines[f][l] = select_service_from_set(f, l, fmt->service_lines[f][l], is_pal);
242 set |= fmt->service_lines[f][l];
243 }
244 }
245 return set != 0;
246 }
247
248 /* Compute the service_set from the assumed valid service_lines of *fmt */
cx18_get_service_set(struct v4l2_sliced_vbi_format * fmt)249 u16 cx18_get_service_set(struct v4l2_sliced_vbi_format *fmt)
250 {
251 int f, l;
252 u16 set = 0;
253
254 for (f = 0; f < 2; f++) {
255 for (l = 0; l < 24; l++)
256 set |= fmt->service_lines[f][l];
257 }
258 return set;
259 }
260
cx18_g_fmt_vbi_cap(struct file * file,void * fh,struct v4l2_format * fmt)261 static int cx18_g_fmt_vbi_cap(struct file *file, void *fh,
262 struct v4l2_format *fmt)
263 {
264 struct cx18 *cx = file2id(file)->cx;
265 struct v4l2_vbi_format *vbifmt = &fmt->fmt.vbi;
266
267 vbifmt->sampling_rate = 27000000;
268 vbifmt->offset = 248; /* FIXME - slightly wrong for both 50 & 60 Hz */
269 vbifmt->samples_per_line = VBI_ACTIVE_SAMPLES - 4;
270 vbifmt->sample_format = V4L2_PIX_FMT_GREY;
271 vbifmt->start[0] = cx->vbi.start[0];
272 vbifmt->start[1] = cx->vbi.start[1];
273 vbifmt->count[0] = vbifmt->count[1] = cx->vbi.count;
274 vbifmt->flags = 0;
275 vbifmt->reserved[0] = 0;
276 vbifmt->reserved[1] = 0;
277 return 0;
278 }
279
cx18_g_fmt_sliced_vbi_cap(struct file * file,void * fh,struct v4l2_format * fmt)280 static int cx18_g_fmt_sliced_vbi_cap(struct file *file, void *fh,
281 struct v4l2_format *fmt)
282 {
283 struct cx18 *cx = file2id(file)->cx;
284 struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
285
286 /* sane, V4L2 spec compliant, defaults */
287 vbifmt->reserved[0] = 0;
288 vbifmt->reserved[1] = 0;
289 vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
290 memset(vbifmt->service_lines, 0, sizeof(vbifmt->service_lines));
291 vbifmt->service_set = 0;
292
293 /*
294 * Fetch the configured service_lines and total service_set from the
295 * digitizer/slicer. Note, cx18_av_vbi() wipes the passed in
296 * fmt->fmt.sliced under valid calling conditions
297 */
298 if (v4l2_subdev_call(cx->sd_av, vbi, g_sliced_fmt, &fmt->fmt.sliced))
299 return -EINVAL;
300
301 vbifmt->service_set = cx18_get_service_set(vbifmt);
302 return 0;
303 }
304
cx18_try_fmt_vbi_cap(struct file * file,void * fh,struct v4l2_format * fmt)305 static int cx18_try_fmt_vbi_cap(struct file *file, void *fh,
306 struct v4l2_format *fmt)
307 {
308 return cx18_g_fmt_vbi_cap(file, fh, fmt);
309 }
310
cx18_try_fmt_sliced_vbi_cap(struct file * file,void * fh,struct v4l2_format * fmt)311 static int cx18_try_fmt_sliced_vbi_cap(struct file *file, void *fh,
312 struct v4l2_format *fmt)
313 {
314 struct cx18 *cx = file2id(file)->cx;
315 struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
316
317 vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
318 vbifmt->reserved[0] = 0;
319 vbifmt->reserved[1] = 0;
320
321 /* If given a service set, expand it validly & clear passed in set */
322 if (vbifmt->service_set)
323 cx18_expand_service_set(vbifmt, cx->is_50hz);
324 /* Sanitize the service_lines, and compute the new set if any valid */
325 if (check_service_set(vbifmt, cx->is_50hz))
326 vbifmt->service_set = cx18_get_service_set(vbifmt);
327 return 0;
328 }
329
cx18_s_fmt_vbi_cap(struct file * file,void * fh,struct v4l2_format * fmt)330 static int cx18_s_fmt_vbi_cap(struct file *file, void *fh,
331 struct v4l2_format *fmt)
332 {
333 struct cx18_open_id *id = file2id(file);
334 struct cx18 *cx = id->cx;
335 int ret;
336
337 /*
338 * Changing the Encoder's Raw VBI parameters won't have any effect
339 * if any analog capture is ongoing
340 */
341 if (!cx18_raw_vbi(cx) && atomic_read(&cx->ana_capturing) > 0)
342 return -EBUSY;
343
344 /*
345 * Set the digitizer registers for raw active VBI.
346 * Note cx18_av_vbi_wipes out a lot of the passed in fmt under valid
347 * calling conditions
348 */
349 ret = v4l2_subdev_call(cx->sd_av, vbi, s_raw_fmt, &fmt->fmt.vbi);
350 if (ret)
351 return ret;
352
353 /* Store our new v4l2 (non-)sliced VBI state */
354 cx->vbi.sliced_in->service_set = 0;
355 cx->vbi.in.type = V4L2_BUF_TYPE_VBI_CAPTURE;
356
357 return cx18_g_fmt_vbi_cap(file, fh, fmt);
358 }
359
cx18_s_fmt_sliced_vbi_cap(struct file * file,void * fh,struct v4l2_format * fmt)360 static int cx18_s_fmt_sliced_vbi_cap(struct file *file, void *fh,
361 struct v4l2_format *fmt)
362 {
363 struct cx18_open_id *id = file2id(file);
364 struct cx18 *cx = id->cx;
365 int ret;
366 struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
367
368 cx18_try_fmt_sliced_vbi_cap(file, fh, fmt);
369
370 /*
371 * Changing the Encoder's Raw VBI parameters won't have any effect
372 * if any analog capture is ongoing
373 */
374 if (cx18_raw_vbi(cx) && atomic_read(&cx->ana_capturing) > 0)
375 return -EBUSY;
376
377 /*
378 * Set the service_lines requested in the digitizer/slicer registers.
379 * Note, cx18_av_vbi() wipes some "impossible" service lines in the
380 * passed in fmt->fmt.sliced under valid calling conditions
381 */
382 ret = v4l2_subdev_call(cx->sd_av, vbi, s_sliced_fmt, &fmt->fmt.sliced);
383 if (ret)
384 return ret;
385 /* Store our current v4l2 sliced VBI settings */
386 cx->vbi.in.type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
387 memcpy(cx->vbi.sliced_in, vbifmt, sizeof(*cx->vbi.sliced_in));
388 return 0;
389 }
390
391 #ifdef CONFIG_VIDEO_ADV_DEBUG
cx18_g_register(struct file * file,void * fh,struct v4l2_dbg_register * reg)392 static int cx18_g_register(struct file *file, void *fh,
393 struct v4l2_dbg_register *reg)
394 {
395 struct cx18 *cx = file2id(file)->cx;
396
397 if (reg->reg & 0x3)
398 return -EINVAL;
399 if (reg->reg >= CX18_MEM_OFFSET + CX18_MEM_SIZE)
400 return -EINVAL;
401 reg->size = 4;
402 reg->val = cx18_read_enc(cx, reg->reg);
403 return 0;
404 }
405
cx18_s_register(struct file * file,void * fh,const struct v4l2_dbg_register * reg)406 static int cx18_s_register(struct file *file, void *fh,
407 const struct v4l2_dbg_register *reg)
408 {
409 struct cx18 *cx = file2id(file)->cx;
410
411 if (reg->reg & 0x3)
412 return -EINVAL;
413 if (reg->reg >= CX18_MEM_OFFSET + CX18_MEM_SIZE)
414 return -EINVAL;
415 cx18_write_enc(cx, reg->val, reg->reg);
416 return 0;
417 }
418 #endif
419
cx18_querycap(struct file * file,void * fh,struct v4l2_capability * vcap)420 static int cx18_querycap(struct file *file, void *fh,
421 struct v4l2_capability *vcap)
422 {
423 struct cx18_open_id *id = file2id(file);
424 struct cx18 *cx = id->cx;
425
426 strscpy(vcap->driver, CX18_DRIVER_NAME, sizeof(vcap->driver));
427 strscpy(vcap->card, cx->card_name, sizeof(vcap->card));
428 vcap->capabilities = cx->v4l2_cap | V4L2_CAP_DEVICE_CAPS;
429 return 0;
430 }
431
cx18_enumaudio(struct file * file,void * fh,struct v4l2_audio * vin)432 static int cx18_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
433 {
434 struct cx18 *cx = file2id(file)->cx;
435
436 return cx18_get_audio_input(cx, vin->index, vin);
437 }
438
cx18_g_audio(struct file * file,void * fh,struct v4l2_audio * vin)439 static int cx18_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
440 {
441 struct cx18 *cx = file2id(file)->cx;
442
443 vin->index = cx->audio_input;
444 return cx18_get_audio_input(cx, vin->index, vin);
445 }
446
cx18_s_audio(struct file * file,void * fh,const struct v4l2_audio * vout)447 static int cx18_s_audio(struct file *file, void *fh, const struct v4l2_audio *vout)
448 {
449 struct cx18 *cx = file2id(file)->cx;
450
451 if (vout->index >= cx->nof_audio_inputs)
452 return -EINVAL;
453 cx->audio_input = vout->index;
454 cx18_audio_set_io(cx);
455 return 0;
456 }
457
cx18_enum_input(struct file * file,void * fh,struct v4l2_input * vin)458 static int cx18_enum_input(struct file *file, void *fh, struct v4l2_input *vin)
459 {
460 struct cx18 *cx = file2id(file)->cx;
461
462 /* set it to defaults from our table */
463 return cx18_get_input(cx, vin->index, vin);
464 }
465
cx18_g_pixelaspect(struct file * file,void * fh,int type,struct v4l2_fract * f)466 static int cx18_g_pixelaspect(struct file *file, void *fh,
467 int type, struct v4l2_fract *f)
468 {
469 struct cx18 *cx = file2id(file)->cx;
470
471 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
472 return -EINVAL;
473
474 f->numerator = cx->is_50hz ? 54 : 11;
475 f->denominator = cx->is_50hz ? 59 : 10;
476 return 0;
477 }
478
cx18_g_selection(struct file * file,void * fh,struct v4l2_selection * sel)479 static int cx18_g_selection(struct file *file, void *fh,
480 struct v4l2_selection *sel)
481 {
482 struct cx18 *cx = file2id(file)->cx;
483
484 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
485 return -EINVAL;
486 switch (sel->target) {
487 case V4L2_SEL_TGT_CROP_BOUNDS:
488 case V4L2_SEL_TGT_CROP_DEFAULT:
489 sel->r.top = sel->r.left = 0;
490 sel->r.width = 720;
491 sel->r.height = cx->is_50hz ? 576 : 480;
492 break;
493 default:
494 return -EINVAL;
495 }
496 return 0;
497 }
498
cx18_enum_fmt_vid_cap(struct file * file,void * fh,struct v4l2_fmtdesc * fmt)499 static int cx18_enum_fmt_vid_cap(struct file *file, void *fh,
500 struct v4l2_fmtdesc *fmt)
501 {
502 struct cx18_open_id *id = file2id(file);
503
504 if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
505 if (fmt->index >= ARRAY_SIZE(cx18_formats_yuv))
506 return -EINVAL;
507 *fmt = cx18_formats_yuv[fmt->index];
508 return 0;
509 }
510 if (fmt->index)
511 return -EINVAL;
512 *fmt = cx18_formats_mpeg[0];
513 return 0;
514 }
515
cx18_g_input(struct file * file,void * fh,unsigned int * i)516 static int cx18_g_input(struct file *file, void *fh, unsigned int *i)
517 {
518 struct cx18 *cx = file2id(file)->cx;
519
520 *i = cx->active_input;
521 return 0;
522 }
523
cx18_do_s_input(struct cx18 * cx,unsigned int inp)524 int cx18_do_s_input(struct cx18 *cx, unsigned int inp)
525 {
526 v4l2_std_id std = V4L2_STD_ALL;
527 const struct cx18_card_video_input *card_input =
528 cx->card->video_inputs + inp;
529
530 if (inp >= cx->nof_inputs)
531 return -EINVAL;
532
533 if (inp == cx->active_input) {
534 CX18_DEBUG_INFO("Input unchanged\n");
535 return 0;
536 }
537
538 CX18_DEBUG_INFO("Changing input from %d to %d\n",
539 cx->active_input, inp);
540
541 cx->active_input = inp;
542 /* Set the audio input to whatever is appropriate for the input type. */
543 cx->audio_input = cx->card->video_inputs[inp].audio_index;
544 if (card_input->video_type == V4L2_INPUT_TYPE_TUNER)
545 std = cx->tuner_std;
546 cx->streams[CX18_ENC_STREAM_TYPE_MPG].video_dev.tvnorms = std;
547 cx->streams[CX18_ENC_STREAM_TYPE_YUV].video_dev.tvnorms = std;
548 cx->streams[CX18_ENC_STREAM_TYPE_VBI].video_dev.tvnorms = std;
549
550 /* prevent others from messing with the streams until
551 we're finished changing inputs. */
552 cx18_mute(cx);
553 cx18_video_set_io(cx);
554 cx18_audio_set_io(cx);
555 cx18_unmute(cx);
556 return 0;
557 }
558
cx18_s_input(struct file * file,void * fh,unsigned int inp)559 static int cx18_s_input(struct file *file, void *fh, unsigned int inp)
560 {
561 return cx18_do_s_input(file2id(file)->cx, inp);
562 }
563
cx18_g_frequency(struct file * file,void * fh,struct v4l2_frequency * vf)564 static int cx18_g_frequency(struct file *file, void *fh,
565 struct v4l2_frequency *vf)
566 {
567 struct cx18 *cx = file2id(file)->cx;
568
569 if (vf->tuner != 0)
570 return -EINVAL;
571
572 cx18_call_all(cx, tuner, g_frequency, vf);
573 return 0;
574 }
575
cx18_do_s_frequency(struct cx18 * cx,const struct v4l2_frequency * vf)576 int cx18_do_s_frequency(struct cx18 *cx, const struct v4l2_frequency *vf)
577 {
578 if (vf->tuner != 0)
579 return -EINVAL;
580
581 cx18_mute(cx);
582 CX18_DEBUG_INFO("v4l2 ioctl: set frequency %d\n", vf->frequency);
583 cx18_call_all(cx, tuner, s_frequency, vf);
584 cx18_unmute(cx);
585 return 0;
586 }
587
cx18_s_frequency(struct file * file,void * fh,const struct v4l2_frequency * vf)588 static int cx18_s_frequency(struct file *file, void *fh,
589 const struct v4l2_frequency *vf)
590 {
591 return cx18_do_s_frequency(file2id(file)->cx, vf);
592 }
593
cx18_g_std(struct file * file,void * fh,v4l2_std_id * std)594 static int cx18_g_std(struct file *file, void *fh, v4l2_std_id *std)
595 {
596 struct cx18 *cx = file2id(file)->cx;
597
598 *std = cx->std;
599 return 0;
600 }
601
cx18_do_s_std(struct cx18 * cx,v4l2_std_id std)602 int cx18_do_s_std(struct cx18 *cx, v4l2_std_id std)
603 {
604 if ((std & V4L2_STD_ALL) == 0)
605 return -EINVAL;
606
607 if (std == cx->std)
608 return 0;
609
610 if (test_bit(CX18_F_I_RADIO_USER, &cx->i_flags) ||
611 atomic_read(&cx->ana_capturing) > 0) {
612 /* Switching standard would turn off the radio or mess
613 with already running streams, prevent that by
614 returning EBUSY. */
615 return -EBUSY;
616 }
617
618 cx->std = std;
619 cx->is_60hz = (std & V4L2_STD_525_60) ? 1 : 0;
620 cx->is_50hz = !cx->is_60hz;
621 cx2341x_handler_set_50hz(&cx->cxhdl, cx->is_50hz);
622 cx->cxhdl.width = 720;
623 cx->cxhdl.height = cx->is_50hz ? 576 : 480;
624 /*
625 * HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
626 * UYUV YUV size is (Y=(h*720) + UV=(h*(720)))
627 */
628 if (cx->streams[CX18_ENC_STREAM_TYPE_YUV].pixelformat == V4L2_PIX_FMT_NV12_16L16) {
629 cx->streams[CX18_ENC_STREAM_TYPE_YUV].vb_bytes_per_frame =
630 cx->cxhdl.height * 720 * 3 / 2;
631 cx->streams[CX18_ENC_STREAM_TYPE_YUV].vb_bytes_per_line = 720;
632 } else {
633 cx->streams[CX18_ENC_STREAM_TYPE_YUV].vb_bytes_per_frame =
634 cx->cxhdl.height * 720 * 2;
635 cx->streams[CX18_ENC_STREAM_TYPE_YUV].vb_bytes_per_line = 1440;
636 }
637 cx->vbi.count = cx->is_50hz ? 18 : 12;
638 cx->vbi.start[0] = cx->is_50hz ? 6 : 10;
639 cx->vbi.start[1] = cx->is_50hz ? 318 : 273;
640 CX18_DEBUG_INFO("Switching standard to %llx.\n",
641 (unsigned long long) cx->std);
642
643 /* Tuner */
644 cx18_call_all(cx, video, s_std, cx->std);
645 return 0;
646 }
647
cx18_s_std(struct file * file,void * fh,v4l2_std_id std)648 static int cx18_s_std(struct file *file, void *fh, v4l2_std_id std)
649 {
650 return cx18_do_s_std(file2id(file)->cx, std);
651 }
652
cx18_s_tuner(struct file * file,void * fh,const struct v4l2_tuner * vt)653 static int cx18_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
654 {
655 struct cx18_open_id *id = file2id(file);
656 struct cx18 *cx = id->cx;
657
658 if (vt->index != 0)
659 return -EINVAL;
660
661 cx18_call_all(cx, tuner, s_tuner, vt);
662 return 0;
663 }
664
cx18_g_tuner(struct file * file,void * fh,struct v4l2_tuner * vt)665 static int cx18_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
666 {
667 struct cx18 *cx = file2id(file)->cx;
668
669 if (vt->index != 0)
670 return -EINVAL;
671
672 cx18_call_all(cx, tuner, g_tuner, vt);
673
674 if (vt->type == V4L2_TUNER_RADIO)
675 strscpy(vt->name, "cx18 Radio Tuner", sizeof(vt->name));
676 else
677 strscpy(vt->name, "cx18 TV Tuner", sizeof(vt->name));
678 return 0;
679 }
680
cx18_g_sliced_vbi_cap(struct file * file,void * fh,struct v4l2_sliced_vbi_cap * cap)681 static int cx18_g_sliced_vbi_cap(struct file *file, void *fh,
682 struct v4l2_sliced_vbi_cap *cap)
683 {
684 struct cx18 *cx = file2id(file)->cx;
685 int set = cx->is_50hz ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525;
686 int f, l;
687
688 if (cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
689 return -EINVAL;
690
691 cap->service_set = 0;
692 for (f = 0; f < 2; f++) {
693 for (l = 0; l < 24; l++) {
694 if (valid_service_line(f, l, cx->is_50hz)) {
695 /*
696 * We can find all v4l2 supported vbi services
697 * for the standard, on a valid line for the std
698 */
699 cap->service_lines[f][l] = set;
700 cap->service_set |= set;
701 } else
702 cap->service_lines[f][l] = 0;
703 }
704 }
705 for (f = 0; f < 3; f++)
706 cap->reserved[f] = 0;
707 return 0;
708 }
709
_cx18_process_idx_data(struct cx18_buffer * buf,struct v4l2_enc_idx * idx)710 static int _cx18_process_idx_data(struct cx18_buffer *buf,
711 struct v4l2_enc_idx *idx)
712 {
713 int consumed, remaining;
714 struct v4l2_enc_idx_entry *e_idx;
715 struct cx18_enc_idx_entry *e_buf;
716
717 /* Frame type lookup: 1=I, 2=P, 4=B */
718 static const int mapping[8] = {
719 -1, V4L2_ENC_IDX_FRAME_I, V4L2_ENC_IDX_FRAME_P,
720 -1, V4L2_ENC_IDX_FRAME_B, -1, -1, -1
721 };
722
723 /*
724 * Assumption here is that a buf holds an integral number of
725 * struct cx18_enc_idx_entry objects and is properly aligned.
726 * This is enforced by the module options on IDX buffer sizes.
727 */
728 remaining = buf->bytesused - buf->readpos;
729 consumed = 0;
730 e_idx = &idx->entry[idx->entries];
731 e_buf = (struct cx18_enc_idx_entry *) &buf->buf[buf->readpos];
732
733 while (remaining >= sizeof(struct cx18_enc_idx_entry) &&
734 idx->entries < V4L2_ENC_IDX_ENTRIES) {
735
736 e_idx->offset = (((u64) le32_to_cpu(e_buf->offset_high)) << 32)
737 | le32_to_cpu(e_buf->offset_low);
738
739 e_idx->pts = (((u64) (le32_to_cpu(e_buf->pts_high) & 1)) << 32)
740 | le32_to_cpu(e_buf->pts_low);
741
742 e_idx->length = le32_to_cpu(e_buf->length);
743
744 e_idx->flags = mapping[le32_to_cpu(e_buf->flags) & 0x7];
745
746 e_idx->reserved[0] = 0;
747 e_idx->reserved[1] = 0;
748
749 idx->entries++;
750 e_idx = &idx->entry[idx->entries];
751 e_buf++;
752
753 remaining -= sizeof(struct cx18_enc_idx_entry);
754 consumed += sizeof(struct cx18_enc_idx_entry);
755 }
756
757 /* Swallow any partial entries at the end, if there are any */
758 if (remaining > 0 && remaining < sizeof(struct cx18_enc_idx_entry))
759 consumed += remaining;
760
761 buf->readpos += consumed;
762 return consumed;
763 }
764
cx18_process_idx_data(struct cx18_stream * s,struct cx18_mdl * mdl,struct v4l2_enc_idx * idx)765 static int cx18_process_idx_data(struct cx18_stream *s, struct cx18_mdl *mdl,
766 struct v4l2_enc_idx *idx)
767 {
768 if (s->type != CX18_ENC_STREAM_TYPE_IDX)
769 return -EINVAL;
770
771 if (mdl->curr_buf == NULL)
772 mdl->curr_buf = list_first_entry(&mdl->buf_list,
773 struct cx18_buffer, list);
774
775 if (list_entry_is_head(mdl->curr_buf, &mdl->buf_list, list)) {
776 /*
777 * For some reason we've exhausted the buffers, but the MDL
778 * object still said some data was unread.
779 * Fix that and bail out.
780 */
781 mdl->readpos = mdl->bytesused;
782 return 0;
783 }
784
785 list_for_each_entry_from(mdl->curr_buf, &mdl->buf_list, list) {
786
787 /* Skip any empty buffers in the MDL */
788 if (mdl->curr_buf->readpos >= mdl->curr_buf->bytesused)
789 continue;
790
791 mdl->readpos += _cx18_process_idx_data(mdl->curr_buf, idx);
792
793 /* exit when MDL drained or request satisfied */
794 if (idx->entries >= V4L2_ENC_IDX_ENTRIES ||
795 mdl->curr_buf->readpos < mdl->curr_buf->bytesused ||
796 mdl->readpos >= mdl->bytesused)
797 break;
798 }
799 return 0;
800 }
801
cx18_g_enc_index(struct file * file,void * fh,struct v4l2_enc_idx * idx)802 static int cx18_g_enc_index(struct file *file, void *fh,
803 struct v4l2_enc_idx *idx)
804 {
805 struct cx18 *cx = file2id(file)->cx;
806 struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
807 s32 tmp;
808 struct cx18_mdl *mdl;
809
810 if (!cx18_stream_enabled(s)) /* Module options inhibited IDX stream */
811 return -EINVAL;
812
813 /* Compute the best case number of entries we can buffer */
814 tmp = s->buffers -
815 s->bufs_per_mdl * CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN;
816 if (tmp <= 0)
817 tmp = 1;
818 tmp = tmp * s->buf_size / sizeof(struct cx18_enc_idx_entry);
819
820 /* Fill out the header of the return structure */
821 idx->entries = 0;
822 idx->entries_cap = tmp;
823 memset(idx->reserved, 0, sizeof(idx->reserved));
824
825 /* Pull IDX MDLs and buffers from q_full and populate the entries */
826 do {
827 mdl = cx18_dequeue(s, &s->q_full);
828 if (mdl == NULL) /* No more IDX data right now */
829 break;
830
831 /* Extract the Index entry data from the MDL and buffers */
832 cx18_process_idx_data(s, mdl, idx);
833 if (mdl->readpos < mdl->bytesused) {
834 /* We finished with data remaining, push the MDL back */
835 cx18_push(s, mdl, &s->q_full);
836 break;
837 }
838
839 /* We drained this MDL, schedule it to go to the firmware */
840 cx18_enqueue(s, mdl, &s->q_free);
841
842 } while (idx->entries < V4L2_ENC_IDX_ENTRIES);
843
844 /* Tell the work handler to send free IDX MDLs to the firmware */
845 cx18_stream_load_fw_queue(s);
846 return 0;
847 }
848
cx18_encoder_cmd(struct file * file,void * fh,struct v4l2_encoder_cmd * enc)849 static int cx18_encoder_cmd(struct file *file, void *fh,
850 struct v4l2_encoder_cmd *enc)
851 {
852 struct cx18_open_id *id = file2id(file);
853 struct cx18 *cx = id->cx;
854 u32 h;
855
856 switch (enc->cmd) {
857 case V4L2_ENC_CMD_START:
858 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_START\n");
859 enc->flags = 0;
860 return cx18_start_capture(id);
861
862 case V4L2_ENC_CMD_STOP:
863 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_STOP\n");
864 enc->flags &= V4L2_ENC_CMD_STOP_AT_GOP_END;
865 cx18_stop_capture(&cx->streams[id->type],
866 enc->flags & V4L2_ENC_CMD_STOP_AT_GOP_END);
867 break;
868
869 case V4L2_ENC_CMD_PAUSE:
870 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_PAUSE\n");
871 enc->flags = 0;
872 if (!atomic_read(&cx->ana_capturing))
873 return -EPERM;
874 if (test_and_set_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags))
875 return 0;
876 h = cx18_find_handle(cx);
877 if (h == CX18_INVALID_TASK_HANDLE) {
878 CX18_ERR("Can't find valid task handle for V4L2_ENC_CMD_PAUSE\n");
879 return -EBADFD;
880 }
881 cx18_mute(cx);
882 cx18_vapi(cx, CX18_CPU_CAPTURE_PAUSE, 1, h);
883 break;
884
885 case V4L2_ENC_CMD_RESUME:
886 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_RESUME\n");
887 enc->flags = 0;
888 if (!atomic_read(&cx->ana_capturing))
889 return -EPERM;
890 if (!test_and_clear_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags))
891 return 0;
892 h = cx18_find_handle(cx);
893 if (h == CX18_INVALID_TASK_HANDLE) {
894 CX18_ERR("Can't find valid task handle for V4L2_ENC_CMD_RESUME\n");
895 return -EBADFD;
896 }
897 cx18_vapi(cx, CX18_CPU_CAPTURE_RESUME, 1, h);
898 cx18_unmute(cx);
899 break;
900
901 default:
902 CX18_DEBUG_IOCTL("Unknown cmd %d\n", enc->cmd);
903 return -EINVAL;
904 }
905 return 0;
906 }
907
cx18_try_encoder_cmd(struct file * file,void * fh,struct v4l2_encoder_cmd * enc)908 static int cx18_try_encoder_cmd(struct file *file, void *fh,
909 struct v4l2_encoder_cmd *enc)
910 {
911 struct cx18 *cx = file2id(file)->cx;
912
913 switch (enc->cmd) {
914 case V4L2_ENC_CMD_START:
915 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_START\n");
916 enc->flags = 0;
917 break;
918
919 case V4L2_ENC_CMD_STOP:
920 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_STOP\n");
921 enc->flags &= V4L2_ENC_CMD_STOP_AT_GOP_END;
922 break;
923
924 case V4L2_ENC_CMD_PAUSE:
925 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_PAUSE\n");
926 enc->flags = 0;
927 break;
928
929 case V4L2_ENC_CMD_RESUME:
930 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_RESUME\n");
931 enc->flags = 0;
932 break;
933
934 default:
935 CX18_DEBUG_IOCTL("Unknown cmd %d\n", enc->cmd);
936 return -EINVAL;
937 }
938 return 0;
939 }
940
cx18_log_status(struct file * file,void * fh)941 static int cx18_log_status(struct file *file, void *fh)
942 {
943 struct cx18 *cx = file2id(file)->cx;
944 struct v4l2_input vidin;
945 struct v4l2_audio audin;
946 int i;
947
948 CX18_INFO("Version: %s Card: %s\n", CX18_VERSION, cx->card_name);
949 if (cx->hw_flags & CX18_HW_TVEEPROM) {
950 struct tveeprom tv;
951
952 cx18_read_eeprom(cx, &tv);
953 }
954 cx18_call_all(cx, core, log_status);
955 cx18_get_input(cx, cx->active_input, &vidin);
956 cx18_get_audio_input(cx, cx->audio_input, &audin);
957 CX18_INFO("Video Input: %s\n", vidin.name);
958 CX18_INFO("Audio Input: %s\n", audin.name);
959 mutex_lock(&cx->gpio_lock);
960 CX18_INFO("GPIO: direction 0x%08x, value 0x%08x\n",
961 cx->gpio_dir, cx->gpio_val);
962 mutex_unlock(&cx->gpio_lock);
963 CX18_INFO("Tuner: %s\n",
964 test_bit(CX18_F_I_RADIO_USER, &cx->i_flags) ? "Radio" : "TV");
965 v4l2_ctrl_handler_log_status(&cx->cxhdl.hdl, cx->v4l2_dev.name);
966 CX18_INFO("Status flags: 0x%08lx\n", cx->i_flags);
967 for (i = 0; i < CX18_MAX_STREAMS; i++) {
968 struct cx18_stream *s = &cx->streams[i];
969
970 if (s->video_dev.v4l2_dev == NULL || s->buffers == 0)
971 continue;
972 CX18_INFO("Stream %s: status 0x%04lx, %d%% of %d KiB (%d buffers) in use\n",
973 s->name, s->s_flags,
974 atomic_read(&s->q_full.depth) * s->bufs_per_mdl * 100
975 / s->buffers,
976 (s->buffers * s->buf_size) / 1024, s->buffers);
977 }
978 CX18_INFO("Read MPEG/VBI: %lld/%lld bytes\n",
979 (long long)cx->mpg_data_received,
980 (long long)cx->vbi_data_inserted);
981 return 0;
982 }
983
cx18_default(struct file * file,void * fh,bool valid_prio,unsigned int cmd,void * arg)984 static long cx18_default(struct file *file, void *fh, bool valid_prio,
985 unsigned int cmd, void *arg)
986 {
987 struct cx18 *cx = file2id(file)->cx;
988
989 switch (cmd) {
990 case VIDIOC_INT_RESET: {
991 u32 val = *(u32 *)arg;
992
993 if ((val == 0) || (val & 0x01))
994 cx18_call_hw(cx, CX18_HW_GPIO_RESET_CTRL, core, reset,
995 (u32) CX18_GPIO_RESET_Z8F0811);
996 break;
997 }
998
999 default:
1000 return -ENOTTY;
1001 }
1002 return 0;
1003 }
1004
1005 static const struct v4l2_ioctl_ops cx18_ioctl_ops = {
1006 .vidioc_querycap = cx18_querycap,
1007 .vidioc_s_audio = cx18_s_audio,
1008 .vidioc_g_audio = cx18_g_audio,
1009 .vidioc_enumaudio = cx18_enumaudio,
1010 .vidioc_enum_input = cx18_enum_input,
1011 .vidioc_g_pixelaspect = cx18_g_pixelaspect,
1012 .vidioc_g_selection = cx18_g_selection,
1013 .vidioc_g_input = cx18_g_input,
1014 .vidioc_s_input = cx18_s_input,
1015 .vidioc_g_frequency = cx18_g_frequency,
1016 .vidioc_s_frequency = cx18_s_frequency,
1017 .vidioc_s_tuner = cx18_s_tuner,
1018 .vidioc_g_tuner = cx18_g_tuner,
1019 .vidioc_g_enc_index = cx18_g_enc_index,
1020 .vidioc_g_std = cx18_g_std,
1021 .vidioc_s_std = cx18_s_std,
1022 .vidioc_log_status = cx18_log_status,
1023 .vidioc_enum_fmt_vid_cap = cx18_enum_fmt_vid_cap,
1024 .vidioc_encoder_cmd = cx18_encoder_cmd,
1025 .vidioc_try_encoder_cmd = cx18_try_encoder_cmd,
1026 .vidioc_g_fmt_vid_cap = cx18_g_fmt_vid_cap,
1027 .vidioc_g_fmt_vbi_cap = cx18_g_fmt_vbi_cap,
1028 .vidioc_g_fmt_sliced_vbi_cap = cx18_g_fmt_sliced_vbi_cap,
1029 .vidioc_s_fmt_vid_cap = cx18_s_fmt_vid_cap,
1030 .vidioc_s_fmt_vbi_cap = cx18_s_fmt_vbi_cap,
1031 .vidioc_s_fmt_sliced_vbi_cap = cx18_s_fmt_sliced_vbi_cap,
1032 .vidioc_try_fmt_vid_cap = cx18_try_fmt_vid_cap,
1033 .vidioc_try_fmt_vbi_cap = cx18_try_fmt_vbi_cap,
1034 .vidioc_try_fmt_sliced_vbi_cap = cx18_try_fmt_sliced_vbi_cap,
1035 .vidioc_g_sliced_vbi_cap = cx18_g_sliced_vbi_cap,
1036 #ifdef CONFIG_VIDEO_ADV_DEBUG
1037 .vidioc_g_register = cx18_g_register,
1038 .vidioc_s_register = cx18_s_register,
1039 #endif
1040 .vidioc_default = cx18_default,
1041
1042 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1043 .vidioc_querybuf = vb2_ioctl_querybuf,
1044 .vidioc_qbuf = vb2_ioctl_qbuf,
1045 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1046 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1047 .vidioc_streamon = vb2_ioctl_streamon,
1048 .vidioc_streamoff = vb2_ioctl_streamoff,
1049 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1050 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1051 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1052 };
1053
cx18_set_funcs(struct video_device * vdev)1054 void cx18_set_funcs(struct video_device *vdev)
1055 {
1056 vdev->ioctl_ops = &cx18_ioctl_ops;
1057 }
1058