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 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 
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 = fh2id(fh);
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 
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 = fh2id(fh);
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 
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 = fh2id(fh);
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 
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 */
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  */
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  */
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  */
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 */
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 
261 static int cx18_g_fmt_vbi_cap(struct file *file, void *fh,
262 				struct v4l2_format *fmt)
263 {
264 	struct cx18 *cx = fh2id(fh)->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 
280 static int cx18_g_fmt_sliced_vbi_cap(struct file *file, void *fh,
281 					struct v4l2_format *fmt)
282 {
283 	struct cx18 *cx = fh2id(fh)->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 
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 
311 static int cx18_try_fmt_sliced_vbi_cap(struct file *file, void *fh,
312 					struct v4l2_format *fmt)
313 {
314 	struct cx18 *cx = fh2id(fh)->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 
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 = fh2id(fh);
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 
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 = fh2id(fh);
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
392 static int cx18_g_register(struct file *file, void *fh,
393 				struct v4l2_dbg_register *reg)
394 {
395 	struct cx18 *cx = fh2id(fh)->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 
406 static int cx18_s_register(struct file *file, void *fh,
407 				const struct v4l2_dbg_register *reg)
408 {
409 	struct cx18 *cx = fh2id(fh)->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 
420 static int cx18_querycap(struct file *file, void *fh,
421 				struct v4l2_capability *vcap)
422 {
423 	struct cx18_open_id *id = fh2id(fh);
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 
432 static int cx18_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
433 {
434 	struct cx18 *cx = fh2id(fh)->cx;
435 
436 	return cx18_get_audio_input(cx, vin->index, vin);
437 }
438 
439 static int cx18_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
440 {
441 	struct cx18 *cx = fh2id(fh)->cx;
442 
443 	vin->index = cx->audio_input;
444 	return cx18_get_audio_input(cx, vin->index, vin);
445 }
446 
447 static int cx18_s_audio(struct file *file, void *fh, const struct v4l2_audio *vout)
448 {
449 	struct cx18 *cx = fh2id(fh)->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 
458 static int cx18_enum_input(struct file *file, void *fh, struct v4l2_input *vin)
459 {
460 	struct cx18 *cx = fh2id(fh)->cx;
461 
462 	/* set it to defaults from our table */
463 	return cx18_get_input(cx, vin->index, vin);
464 }
465 
466 static int cx18_g_pixelaspect(struct file *file, void *fh,
467 			      int type, struct v4l2_fract *f)
468 {
469 	struct cx18 *cx = fh2id(fh)->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 
479 static int cx18_g_selection(struct file *file, void *fh,
480 			    struct v4l2_selection *sel)
481 {
482 	struct cx18 *cx = fh2id(fh)->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 
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 = fh2id(fh);
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 
516 static int cx18_g_input(struct file *file, void *fh, unsigned int *i)
517 {
518 	struct cx18 *cx = fh2id(fh)->cx;
519 
520 	*i = cx->active_input;
521 	return 0;
522 }
523 
524 int cx18_s_input(struct file *file, void *fh, unsigned int inp)
525 {
526 	struct cx18_open_id *id = fh2id(fh);
527 	struct cx18 *cx = id->cx;
528 	v4l2_std_id std = V4L2_STD_ALL;
529 	const struct cx18_card_video_input *card_input =
530 				cx->card->video_inputs + inp;
531 
532 	if (inp >= cx->nof_inputs)
533 		return -EINVAL;
534 
535 	if (inp == cx->active_input) {
536 		CX18_DEBUG_INFO("Input unchanged\n");
537 		return 0;
538 	}
539 
540 	CX18_DEBUG_INFO("Changing input from %d to %d\n",
541 			cx->active_input, inp);
542 
543 	cx->active_input = inp;
544 	/* Set the audio input to whatever is appropriate for the input type. */
545 	cx->audio_input = cx->card->video_inputs[inp].audio_index;
546 	if (card_input->video_type == V4L2_INPUT_TYPE_TUNER)
547 		std = cx->tuner_std;
548 	cx->streams[CX18_ENC_STREAM_TYPE_MPG].video_dev.tvnorms = std;
549 	cx->streams[CX18_ENC_STREAM_TYPE_YUV].video_dev.tvnorms = std;
550 	cx->streams[CX18_ENC_STREAM_TYPE_VBI].video_dev.tvnorms = std;
551 
552 	/* prevent others from messing with the streams until
553 	   we're finished changing inputs. */
554 	cx18_mute(cx);
555 	cx18_video_set_io(cx);
556 	cx18_audio_set_io(cx);
557 	cx18_unmute(cx);
558 	return 0;
559 }
560 
561 static int cx18_g_frequency(struct file *file, void *fh,
562 				struct v4l2_frequency *vf)
563 {
564 	struct cx18 *cx = fh2id(fh)->cx;
565 
566 	if (vf->tuner != 0)
567 		return -EINVAL;
568 
569 	cx18_call_all(cx, tuner, g_frequency, vf);
570 	return 0;
571 }
572 
573 int cx18_s_frequency(struct file *file, void *fh, const struct v4l2_frequency *vf)
574 {
575 	struct cx18_open_id *id = fh2id(fh);
576 	struct cx18 *cx = id->cx;
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 
588 static int cx18_g_std(struct file *file, void *fh, v4l2_std_id *std)
589 {
590 	struct cx18 *cx = fh2id(fh)->cx;
591 
592 	*std = cx->std;
593 	return 0;
594 }
595 
596 int cx18_s_std(struct file *file, void *fh, v4l2_std_id std)
597 {
598 	struct cx18_open_id *id = fh2id(fh);
599 	struct cx18 *cx = id->cx;
600 
601 	if ((std & V4L2_STD_ALL) == 0)
602 		return -EINVAL;
603 
604 	if (std == cx->std)
605 		return 0;
606 
607 	if (test_bit(CX18_F_I_RADIO_USER, &cx->i_flags) ||
608 	    atomic_read(&cx->ana_capturing) > 0) {
609 		/* Switching standard would turn off the radio or mess
610 		   with already running streams, prevent that by
611 		   returning EBUSY. */
612 		return -EBUSY;
613 	}
614 
615 	cx->std = std;
616 	cx->is_60hz = (std & V4L2_STD_525_60) ? 1 : 0;
617 	cx->is_50hz = !cx->is_60hz;
618 	cx2341x_handler_set_50hz(&cx->cxhdl, cx->is_50hz);
619 	cx->cxhdl.width = 720;
620 	cx->cxhdl.height = cx->is_50hz ? 576 : 480;
621 	/*
622 	 * HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
623 	 * UYUV YUV size is (Y=(h*720) + UV=(h*(720)))
624 	 */
625 	if (cx->streams[CX18_ENC_STREAM_TYPE_YUV].pixelformat == V4L2_PIX_FMT_NV12_16L16) {
626 		cx->streams[CX18_ENC_STREAM_TYPE_YUV].vb_bytes_per_frame =
627 			cx->cxhdl.height * 720 * 3 / 2;
628 		cx->streams[CX18_ENC_STREAM_TYPE_YUV].vb_bytes_per_line = 720;
629 	} else {
630 		cx->streams[CX18_ENC_STREAM_TYPE_YUV].vb_bytes_per_frame =
631 			cx->cxhdl.height * 720 * 2;
632 		cx->streams[CX18_ENC_STREAM_TYPE_YUV].vb_bytes_per_line = 1440;
633 	}
634 	cx->vbi.count = cx->is_50hz ? 18 : 12;
635 	cx->vbi.start[0] = cx->is_50hz ? 6 : 10;
636 	cx->vbi.start[1] = cx->is_50hz ? 318 : 273;
637 	CX18_DEBUG_INFO("Switching standard to %llx.\n",
638 			(unsigned long long) cx->std);
639 
640 	/* Tuner */
641 	cx18_call_all(cx, video, s_std, cx->std);
642 	return 0;
643 }
644 
645 static int cx18_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
646 {
647 	struct cx18_open_id *id = fh2id(fh);
648 	struct cx18 *cx = id->cx;
649 
650 	if (vt->index != 0)
651 		return -EINVAL;
652 
653 	cx18_call_all(cx, tuner, s_tuner, vt);
654 	return 0;
655 }
656 
657 static int cx18_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
658 {
659 	struct cx18 *cx = fh2id(fh)->cx;
660 
661 	if (vt->index != 0)
662 		return -EINVAL;
663 
664 	cx18_call_all(cx, tuner, g_tuner, vt);
665 
666 	if (vt->type == V4L2_TUNER_RADIO)
667 		strscpy(vt->name, "cx18 Radio Tuner", sizeof(vt->name));
668 	else
669 		strscpy(vt->name, "cx18 TV Tuner", sizeof(vt->name));
670 	return 0;
671 }
672 
673 static int cx18_g_sliced_vbi_cap(struct file *file, void *fh,
674 					struct v4l2_sliced_vbi_cap *cap)
675 {
676 	struct cx18 *cx = fh2id(fh)->cx;
677 	int set = cx->is_50hz ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525;
678 	int f, l;
679 
680 	if (cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
681 		return -EINVAL;
682 
683 	cap->service_set = 0;
684 	for (f = 0; f < 2; f++) {
685 		for (l = 0; l < 24; l++) {
686 			if (valid_service_line(f, l, cx->is_50hz)) {
687 				/*
688 				 * We can find all v4l2 supported vbi services
689 				 * for the standard, on a valid line for the std
690 				 */
691 				cap->service_lines[f][l] = set;
692 				cap->service_set |= set;
693 			} else
694 				cap->service_lines[f][l] = 0;
695 		}
696 	}
697 	for (f = 0; f < 3; f++)
698 		cap->reserved[f] = 0;
699 	return 0;
700 }
701 
702 static int _cx18_process_idx_data(struct cx18_buffer *buf,
703 				  struct v4l2_enc_idx *idx)
704 {
705 	int consumed, remaining;
706 	struct v4l2_enc_idx_entry *e_idx;
707 	struct cx18_enc_idx_entry *e_buf;
708 
709 	/* Frame type lookup: 1=I, 2=P, 4=B */
710 	static const int mapping[8] = {
711 		-1, V4L2_ENC_IDX_FRAME_I, V4L2_ENC_IDX_FRAME_P,
712 		-1, V4L2_ENC_IDX_FRAME_B, -1, -1, -1
713 	};
714 
715 	/*
716 	 * Assumption here is that a buf holds an integral number of
717 	 * struct cx18_enc_idx_entry objects and is properly aligned.
718 	 * This is enforced by the module options on IDX buffer sizes.
719 	 */
720 	remaining = buf->bytesused - buf->readpos;
721 	consumed = 0;
722 	e_idx = &idx->entry[idx->entries];
723 	e_buf = (struct cx18_enc_idx_entry *) &buf->buf[buf->readpos];
724 
725 	while (remaining >= sizeof(struct cx18_enc_idx_entry) &&
726 	       idx->entries < V4L2_ENC_IDX_ENTRIES) {
727 
728 		e_idx->offset = (((u64) le32_to_cpu(e_buf->offset_high)) << 32)
729 				| le32_to_cpu(e_buf->offset_low);
730 
731 		e_idx->pts = (((u64) (le32_to_cpu(e_buf->pts_high) & 1)) << 32)
732 			     | le32_to_cpu(e_buf->pts_low);
733 
734 		e_idx->length = le32_to_cpu(e_buf->length);
735 
736 		e_idx->flags = mapping[le32_to_cpu(e_buf->flags) & 0x7];
737 
738 		e_idx->reserved[0] = 0;
739 		e_idx->reserved[1] = 0;
740 
741 		idx->entries++;
742 		e_idx = &idx->entry[idx->entries];
743 		e_buf++;
744 
745 		remaining -= sizeof(struct cx18_enc_idx_entry);
746 		consumed += sizeof(struct cx18_enc_idx_entry);
747 	}
748 
749 	/* Swallow any partial entries at the end, if there are any */
750 	if (remaining > 0 && remaining < sizeof(struct cx18_enc_idx_entry))
751 		consumed += remaining;
752 
753 	buf->readpos += consumed;
754 	return consumed;
755 }
756 
757 static int cx18_process_idx_data(struct cx18_stream *s, struct cx18_mdl *mdl,
758 				 struct v4l2_enc_idx *idx)
759 {
760 	if (s->type != CX18_ENC_STREAM_TYPE_IDX)
761 		return -EINVAL;
762 
763 	if (mdl->curr_buf == NULL)
764 		mdl->curr_buf = list_first_entry(&mdl->buf_list,
765 						 struct cx18_buffer, list);
766 
767 	if (list_entry_is_past_end(mdl->curr_buf, &mdl->buf_list, list)) {
768 		/*
769 		 * For some reason we've exhausted the buffers, but the MDL
770 		 * object still said some data was unread.
771 		 * Fix that and bail out.
772 		 */
773 		mdl->readpos = mdl->bytesused;
774 		return 0;
775 	}
776 
777 	list_for_each_entry_from(mdl->curr_buf, &mdl->buf_list, list) {
778 
779 		/* Skip any empty buffers in the MDL */
780 		if (mdl->curr_buf->readpos >= mdl->curr_buf->bytesused)
781 			continue;
782 
783 		mdl->readpos += _cx18_process_idx_data(mdl->curr_buf, idx);
784 
785 		/* exit when MDL drained or request satisfied */
786 		if (idx->entries >= V4L2_ENC_IDX_ENTRIES ||
787 		    mdl->curr_buf->readpos < mdl->curr_buf->bytesused ||
788 		    mdl->readpos >= mdl->bytesused)
789 			break;
790 	}
791 	return 0;
792 }
793 
794 static int cx18_g_enc_index(struct file *file, void *fh,
795 				struct v4l2_enc_idx *idx)
796 {
797 	struct cx18 *cx = fh2id(fh)->cx;
798 	struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
799 	s32 tmp;
800 	struct cx18_mdl *mdl;
801 
802 	if (!cx18_stream_enabled(s)) /* Module options inhibited IDX stream */
803 		return -EINVAL;
804 
805 	/* Compute the best case number of entries we can buffer */
806 	tmp = s->buffers -
807 			  s->bufs_per_mdl * CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN;
808 	if (tmp <= 0)
809 		tmp = 1;
810 	tmp = tmp * s->buf_size / sizeof(struct cx18_enc_idx_entry);
811 
812 	/* Fill out the header of the return structure */
813 	idx->entries = 0;
814 	idx->entries_cap = tmp;
815 	memset(idx->reserved, 0, sizeof(idx->reserved));
816 
817 	/* Pull IDX MDLs and buffers from q_full and populate the entries */
818 	do {
819 		mdl = cx18_dequeue(s, &s->q_full);
820 		if (mdl == NULL) /* No more IDX data right now */
821 			break;
822 
823 		/* Extract the Index entry data from the MDL and buffers */
824 		cx18_process_idx_data(s, mdl, idx);
825 		if (mdl->readpos < mdl->bytesused) {
826 			/* We finished with data remaining, push the MDL back */
827 			cx18_push(s, mdl, &s->q_full);
828 			break;
829 		}
830 
831 		/* We drained this MDL, schedule it to go to the firmware */
832 		cx18_enqueue(s, mdl, &s->q_free);
833 
834 	} while (idx->entries < V4L2_ENC_IDX_ENTRIES);
835 
836 	/* Tell the work handler to send free IDX MDLs to the firmware */
837 	cx18_stream_load_fw_queue(s);
838 	return 0;
839 }
840 
841 static int cx18_encoder_cmd(struct file *file, void *fh,
842 				struct v4l2_encoder_cmd *enc)
843 {
844 	struct cx18_open_id *id = fh2id(fh);
845 	struct cx18 *cx = id->cx;
846 	u32 h;
847 
848 	switch (enc->cmd) {
849 	case V4L2_ENC_CMD_START:
850 		CX18_DEBUG_IOCTL("V4L2_ENC_CMD_START\n");
851 		enc->flags = 0;
852 		return cx18_start_capture(id);
853 
854 	case V4L2_ENC_CMD_STOP:
855 		CX18_DEBUG_IOCTL("V4L2_ENC_CMD_STOP\n");
856 		enc->flags &= V4L2_ENC_CMD_STOP_AT_GOP_END;
857 		cx18_stop_capture(&cx->streams[id->type],
858 				  enc->flags & V4L2_ENC_CMD_STOP_AT_GOP_END);
859 		break;
860 
861 	case V4L2_ENC_CMD_PAUSE:
862 		CX18_DEBUG_IOCTL("V4L2_ENC_CMD_PAUSE\n");
863 		enc->flags = 0;
864 		if (!atomic_read(&cx->ana_capturing))
865 			return -EPERM;
866 		if (test_and_set_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags))
867 			return 0;
868 		h = cx18_find_handle(cx);
869 		if (h == CX18_INVALID_TASK_HANDLE) {
870 			CX18_ERR("Can't find valid task handle for V4L2_ENC_CMD_PAUSE\n");
871 			return -EBADFD;
872 		}
873 		cx18_mute(cx);
874 		cx18_vapi(cx, CX18_CPU_CAPTURE_PAUSE, 1, h);
875 		break;
876 
877 	case V4L2_ENC_CMD_RESUME:
878 		CX18_DEBUG_IOCTL("V4L2_ENC_CMD_RESUME\n");
879 		enc->flags = 0;
880 		if (!atomic_read(&cx->ana_capturing))
881 			return -EPERM;
882 		if (!test_and_clear_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags))
883 			return 0;
884 		h = cx18_find_handle(cx);
885 		if (h == CX18_INVALID_TASK_HANDLE) {
886 			CX18_ERR("Can't find valid task handle for V4L2_ENC_CMD_RESUME\n");
887 			return -EBADFD;
888 		}
889 		cx18_vapi(cx, CX18_CPU_CAPTURE_RESUME, 1, h);
890 		cx18_unmute(cx);
891 		break;
892 
893 	default:
894 		CX18_DEBUG_IOCTL("Unknown cmd %d\n", enc->cmd);
895 		return -EINVAL;
896 	}
897 	return 0;
898 }
899 
900 static int cx18_try_encoder_cmd(struct file *file, void *fh,
901 				struct v4l2_encoder_cmd *enc)
902 {
903 	struct cx18 *cx = fh2id(fh)->cx;
904 
905 	switch (enc->cmd) {
906 	case V4L2_ENC_CMD_START:
907 		CX18_DEBUG_IOCTL("V4L2_ENC_CMD_START\n");
908 		enc->flags = 0;
909 		break;
910 
911 	case V4L2_ENC_CMD_STOP:
912 		CX18_DEBUG_IOCTL("V4L2_ENC_CMD_STOP\n");
913 		enc->flags &= V4L2_ENC_CMD_STOP_AT_GOP_END;
914 		break;
915 
916 	case V4L2_ENC_CMD_PAUSE:
917 		CX18_DEBUG_IOCTL("V4L2_ENC_CMD_PAUSE\n");
918 		enc->flags = 0;
919 		break;
920 
921 	case V4L2_ENC_CMD_RESUME:
922 		CX18_DEBUG_IOCTL("V4L2_ENC_CMD_RESUME\n");
923 		enc->flags = 0;
924 		break;
925 
926 	default:
927 		CX18_DEBUG_IOCTL("Unknown cmd %d\n", enc->cmd);
928 		return -EINVAL;
929 	}
930 	return 0;
931 }
932 
933 static int cx18_log_status(struct file *file, void *fh)
934 {
935 	struct cx18 *cx = fh2id(fh)->cx;
936 	struct v4l2_input vidin;
937 	struct v4l2_audio audin;
938 	int i;
939 
940 	CX18_INFO("Version: %s  Card: %s\n", CX18_VERSION, cx->card_name);
941 	if (cx->hw_flags & CX18_HW_TVEEPROM) {
942 		struct tveeprom tv;
943 
944 		cx18_read_eeprom(cx, &tv);
945 	}
946 	cx18_call_all(cx, core, log_status);
947 	cx18_get_input(cx, cx->active_input, &vidin);
948 	cx18_get_audio_input(cx, cx->audio_input, &audin);
949 	CX18_INFO("Video Input: %s\n", vidin.name);
950 	CX18_INFO("Audio Input: %s\n", audin.name);
951 	mutex_lock(&cx->gpio_lock);
952 	CX18_INFO("GPIO:  direction 0x%08x, value 0x%08x\n",
953 		cx->gpio_dir, cx->gpio_val);
954 	mutex_unlock(&cx->gpio_lock);
955 	CX18_INFO("Tuner: %s\n",
956 		test_bit(CX18_F_I_RADIO_USER, &cx->i_flags) ?  "Radio" : "TV");
957 	v4l2_ctrl_handler_log_status(&cx->cxhdl.hdl, cx->v4l2_dev.name);
958 	CX18_INFO("Status flags: 0x%08lx\n", cx->i_flags);
959 	for (i = 0; i < CX18_MAX_STREAMS; i++) {
960 		struct cx18_stream *s = &cx->streams[i];
961 
962 		if (s->video_dev.v4l2_dev == NULL || s->buffers == 0)
963 			continue;
964 		CX18_INFO("Stream %s: status 0x%04lx, %d%% of %d KiB (%d buffers) in use\n",
965 			  s->name, s->s_flags,
966 			  atomic_read(&s->q_full.depth) * s->bufs_per_mdl * 100
967 			   / s->buffers,
968 			  (s->buffers * s->buf_size) / 1024, s->buffers);
969 	}
970 	CX18_INFO("Read MPEG/VBI: %lld/%lld bytes\n",
971 			(long long)cx->mpg_data_received,
972 			(long long)cx->vbi_data_inserted);
973 	return 0;
974 }
975 
976 static long cx18_default(struct file *file, void *fh, bool valid_prio,
977 			 unsigned int cmd, void *arg)
978 {
979 	struct cx18 *cx = fh2id(fh)->cx;
980 
981 	switch (cmd) {
982 	case VIDIOC_INT_RESET: {
983 		u32 val = *(u32 *)arg;
984 
985 		if ((val == 0) || (val & 0x01))
986 			cx18_call_hw(cx, CX18_HW_GPIO_RESET_CTRL, core, reset,
987 				     (u32) CX18_GPIO_RESET_Z8F0811);
988 		break;
989 	}
990 
991 	default:
992 		return -ENOTTY;
993 	}
994 	return 0;
995 }
996 
997 static const struct v4l2_ioctl_ops cx18_ioctl_ops = {
998 	.vidioc_querycap                = cx18_querycap,
999 	.vidioc_s_audio                 = cx18_s_audio,
1000 	.vidioc_g_audio                 = cx18_g_audio,
1001 	.vidioc_enumaudio               = cx18_enumaudio,
1002 	.vidioc_enum_input              = cx18_enum_input,
1003 	.vidioc_g_pixelaspect           = cx18_g_pixelaspect,
1004 	.vidioc_g_selection             = cx18_g_selection,
1005 	.vidioc_g_input                 = cx18_g_input,
1006 	.vidioc_s_input                 = cx18_s_input,
1007 	.vidioc_g_frequency             = cx18_g_frequency,
1008 	.vidioc_s_frequency             = cx18_s_frequency,
1009 	.vidioc_s_tuner                 = cx18_s_tuner,
1010 	.vidioc_g_tuner                 = cx18_g_tuner,
1011 	.vidioc_g_enc_index             = cx18_g_enc_index,
1012 	.vidioc_g_std                   = cx18_g_std,
1013 	.vidioc_s_std                   = cx18_s_std,
1014 	.vidioc_log_status              = cx18_log_status,
1015 	.vidioc_enum_fmt_vid_cap        = cx18_enum_fmt_vid_cap,
1016 	.vidioc_encoder_cmd             = cx18_encoder_cmd,
1017 	.vidioc_try_encoder_cmd         = cx18_try_encoder_cmd,
1018 	.vidioc_g_fmt_vid_cap           = cx18_g_fmt_vid_cap,
1019 	.vidioc_g_fmt_vbi_cap           = cx18_g_fmt_vbi_cap,
1020 	.vidioc_g_fmt_sliced_vbi_cap    = cx18_g_fmt_sliced_vbi_cap,
1021 	.vidioc_s_fmt_vid_cap           = cx18_s_fmt_vid_cap,
1022 	.vidioc_s_fmt_vbi_cap           = cx18_s_fmt_vbi_cap,
1023 	.vidioc_s_fmt_sliced_vbi_cap    = cx18_s_fmt_sliced_vbi_cap,
1024 	.vidioc_try_fmt_vid_cap         = cx18_try_fmt_vid_cap,
1025 	.vidioc_try_fmt_vbi_cap         = cx18_try_fmt_vbi_cap,
1026 	.vidioc_try_fmt_sliced_vbi_cap  = cx18_try_fmt_sliced_vbi_cap,
1027 	.vidioc_g_sliced_vbi_cap        = cx18_g_sliced_vbi_cap,
1028 #ifdef CONFIG_VIDEO_ADV_DEBUG
1029 	.vidioc_g_register              = cx18_g_register,
1030 	.vidioc_s_register              = cx18_s_register,
1031 #endif
1032 	.vidioc_default                 = cx18_default,
1033 
1034 	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
1035 	.vidioc_querybuf		= vb2_ioctl_querybuf,
1036 	.vidioc_qbuf			= vb2_ioctl_qbuf,
1037 	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
1038 	.vidioc_create_bufs		= vb2_ioctl_create_bufs,
1039 	.vidioc_streamon		= vb2_ioctl_streamon,
1040 	.vidioc_streamoff		= vb2_ioctl_streamoff,
1041 	.vidioc_prepare_buf		= vb2_ioctl_prepare_buf,
1042 	.vidioc_subscribe_event		= v4l2_ctrl_subscribe_event,
1043 	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
1044 };
1045 
1046 void cx18_set_funcs(struct video_device *vdev)
1047 {
1048 	vdev->ioctl_ops = &cx18_ioctl_ops;
1049 }
1050