2 * cx18 ioctl system call
4 * Derived from ivtv-ioctl.c
6 * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
7 * Copyright (C) 2008 Andy Walls <awalls@md.metrocast.net>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
20 #include "cx18-driver.h"
22 #include "cx18-version.h"
23 #include "cx18-mailbox.h"
25 #include "cx18-queue.h"
26 #include "cx18-fileops.h"
28 #include "cx18-audio.h"
29 #include "cx18-video.h"
30 #include "cx18-streams.h"
31 #include "cx18-ioctl.h"
32 #include "cx18-gpio.h"
33 #include "cx18-controls.h"
34 #include "cx18-cards.h"
35 #include "cx18-av-core.h"
36 #include <media/tveeprom.h>
37 #include <media/v4l2-event.h>
39 u16 cx18_service2vbi(int type)
42 case V4L2_SLICED_TELETEXT_B:
43 return CX18_SLICED_TYPE_TELETEXT_B;
44 case V4L2_SLICED_CAPTION_525:
45 return CX18_SLICED_TYPE_CAPTION_525;
46 case V4L2_SLICED_WSS_625:
47 return CX18_SLICED_TYPE_WSS_625;
49 return CX18_SLICED_TYPE_VPS;
55 /* Check if VBI services are allowed on the (field, line) for the video std */
56 static int valid_service_line(int field, int line, int is_pal)
58 return (is_pal && line >= 6 &&
59 ((field == 0 && line <= 23) || (field == 1 && line <= 22))) ||
60 (!is_pal && line >= 10 && line < 22);
64 * For a (field, line, std) and inbound potential set of services for that line,
65 * return the first valid service of those passed in the incoming set for that
66 * line in priority order:
67 * CC, VPS, or WSS over TELETEXT for well known lines
68 * TELETEXT, before VPS, before CC, before WSS, for other lines
70 static u16 select_service_from_set(int field, int line, u16 set, int is_pal)
72 u16 valid_set = (is_pal ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525);
75 set = set & valid_set;
76 if (set == 0 || !valid_service_line(field, line, is_pal))
79 if (line == 21 && (set & V4L2_SLICED_CAPTION_525))
80 return V4L2_SLICED_CAPTION_525;
82 if (line == 16 && field == 0 && (set & V4L2_SLICED_VPS))
83 return V4L2_SLICED_VPS;
84 if (line == 23 && field == 0 && (set & V4L2_SLICED_WSS_625))
85 return V4L2_SLICED_WSS_625;
89 for (i = 0; i < 32; i++) {
97 * Expand the service_set of *fmt into valid service_lines for the std,
98 * and clear the passed in fmt->service_set
100 void cx18_expand_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal)
102 u16 set = fmt->service_set;
105 fmt->service_set = 0;
106 for (f = 0; f < 2; f++) {
107 for (l = 0; l < 24; l++)
108 fmt->service_lines[f][l] = select_service_from_set(f, l, set, is_pal);
113 * Sanitize the service_lines in *fmt per the video std, and return 1
114 * if any service_line is left as valid after santization
116 static int check_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal)
121 for (f = 0; f < 2; f++) {
122 for (l = 0; l < 24; l++) {
123 fmt->service_lines[f][l] = select_service_from_set(f, l, fmt->service_lines[f][l], is_pal);
124 set |= fmt->service_lines[f][l];
130 /* Compute the service_set from the assumed valid service_lines of *fmt */
131 u16 cx18_get_service_set(struct v4l2_sliced_vbi_format *fmt)
136 for (f = 0; f < 2; f++) {
137 for (l = 0; l < 24; l++)
138 set |= fmt->service_lines[f][l];
143 static int cx18_g_fmt_vid_cap(struct file *file, void *fh,
144 struct v4l2_format *fmt)
146 struct cx18_open_id *id = fh2id(fh);
147 struct cx18 *cx = id->cx;
148 struct cx18_stream *s = &cx->streams[id->type];
149 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
151 pixfmt->width = cx->cxhdl.width;
152 pixfmt->height = cx->cxhdl.height;
153 pixfmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
154 pixfmt->field = V4L2_FIELD_INTERLACED;
155 if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
156 pixfmt->pixelformat = s->pixelformat;
157 pixfmt->sizeimage = s->vb_bytes_per_frame;
158 pixfmt->bytesperline = s->vb_bytes_per_line;
160 pixfmt->pixelformat = V4L2_PIX_FMT_MPEG;
161 pixfmt->sizeimage = 128 * 1024;
162 pixfmt->bytesperline = 0;
167 static int cx18_g_fmt_vbi_cap(struct file *file, void *fh,
168 struct v4l2_format *fmt)
170 struct cx18 *cx = fh2id(fh)->cx;
171 struct v4l2_vbi_format *vbifmt = &fmt->fmt.vbi;
173 vbifmt->sampling_rate = 27000000;
174 vbifmt->offset = 248; /* FIXME - slightly wrong for both 50 & 60 Hz */
175 vbifmt->samples_per_line = VBI_ACTIVE_SAMPLES - 4;
176 vbifmt->sample_format = V4L2_PIX_FMT_GREY;
177 vbifmt->start[0] = cx->vbi.start[0];
178 vbifmt->start[1] = cx->vbi.start[1];
179 vbifmt->count[0] = vbifmt->count[1] = cx->vbi.count;
181 vbifmt->reserved[0] = 0;
182 vbifmt->reserved[1] = 0;
186 static int cx18_g_fmt_sliced_vbi_cap(struct file *file, void *fh,
187 struct v4l2_format *fmt)
189 struct cx18 *cx = fh2id(fh)->cx;
190 struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
192 /* sane, V4L2 spec compliant, defaults */
193 vbifmt->reserved[0] = 0;
194 vbifmt->reserved[1] = 0;
195 vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
196 memset(vbifmt->service_lines, 0, sizeof(vbifmt->service_lines));
197 vbifmt->service_set = 0;
200 * Fetch the configured service_lines and total service_set from the
201 * digitizer/slicer. Note, cx18_av_vbi() wipes the passed in
202 * fmt->fmt.sliced under valid calling conditions
204 if (v4l2_subdev_call(cx->sd_av, vbi, g_sliced_fmt, &fmt->fmt.sliced))
207 vbifmt->service_set = cx18_get_service_set(vbifmt);
211 static int cx18_try_fmt_vid_cap(struct file *file, void *fh,
212 struct v4l2_format *fmt)
214 struct cx18_open_id *id = fh2id(fh);
215 struct cx18 *cx = id->cx;
216 int w = fmt->fmt.pix.width;
217 int h = fmt->fmt.pix.height;
222 if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
223 /* YUV height must be a multiple of 32 */
227 h = min(h, cx->is_50hz ? 576 : 480);
230 fmt->fmt.pix.width = w;
231 fmt->fmt.pix.height = h;
235 static int cx18_try_fmt_vbi_cap(struct file *file, void *fh,
236 struct v4l2_format *fmt)
238 return cx18_g_fmt_vbi_cap(file, fh, fmt);
241 static int cx18_try_fmt_sliced_vbi_cap(struct file *file, void *fh,
242 struct v4l2_format *fmt)
244 struct cx18 *cx = fh2id(fh)->cx;
245 struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
247 vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
248 vbifmt->reserved[0] = 0;
249 vbifmt->reserved[1] = 0;
251 /* If given a service set, expand it validly & clear passed in set */
252 if (vbifmt->service_set)
253 cx18_expand_service_set(vbifmt, cx->is_50hz);
254 /* Sanitize the service_lines, and compute the new set if any valid */
255 if (check_service_set(vbifmt, cx->is_50hz))
256 vbifmt->service_set = cx18_get_service_set(vbifmt);
260 static int cx18_s_fmt_vid_cap(struct file *file, void *fh,
261 struct v4l2_format *fmt)
263 struct cx18_open_id *id = fh2id(fh);
264 struct cx18 *cx = id->cx;
265 struct v4l2_subdev_format format = {
266 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
268 struct cx18_stream *s = &cx->streams[id->type];
272 ret = cx18_try_fmt_vid_cap(file, fh, fmt);
275 w = fmt->fmt.pix.width;
276 h = fmt->fmt.pix.height;
278 if (cx->cxhdl.width == w && cx->cxhdl.height == h &&
279 s->pixelformat == fmt->fmt.pix.pixelformat)
282 if (atomic_read(&cx->ana_capturing) > 0)
285 s->pixelformat = fmt->fmt.pix.pixelformat;
286 /* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
287 UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */
288 if (s->pixelformat == V4L2_PIX_FMT_HM12) {
289 s->vb_bytes_per_frame = h * 720 * 3 / 2;
290 s->vb_bytes_per_line = 720; /* First plane */
292 s->vb_bytes_per_frame = h * 720 * 2;
293 s->vb_bytes_per_line = 1440; /* Packed */
296 format.format.width = cx->cxhdl.width = w;
297 format.format.height = cx->cxhdl.height = h;
298 format.format.code = MEDIA_BUS_FMT_FIXED;
299 v4l2_subdev_call(cx->sd_av, pad, set_fmt, NULL, &format);
300 return cx18_g_fmt_vid_cap(file, fh, fmt);
303 static int cx18_s_fmt_vbi_cap(struct file *file, void *fh,
304 struct v4l2_format *fmt)
306 struct cx18_open_id *id = fh2id(fh);
307 struct cx18 *cx = id->cx;
311 * Changing the Encoder's Raw VBI parameters won't have any effect
312 * if any analog capture is ongoing
314 if (!cx18_raw_vbi(cx) && atomic_read(&cx->ana_capturing) > 0)
318 * Set the digitizer registers for raw active VBI.
319 * Note cx18_av_vbi_wipes out a lot of the passed in fmt under valid
322 ret = v4l2_subdev_call(cx->sd_av, vbi, s_raw_fmt, &fmt->fmt.vbi);
326 /* Store our new v4l2 (non-)sliced VBI state */
327 cx->vbi.sliced_in->service_set = 0;
328 cx->vbi.in.type = V4L2_BUF_TYPE_VBI_CAPTURE;
330 return cx18_g_fmt_vbi_cap(file, fh, fmt);
333 static int cx18_s_fmt_sliced_vbi_cap(struct file *file, void *fh,
334 struct v4l2_format *fmt)
336 struct cx18_open_id *id = fh2id(fh);
337 struct cx18 *cx = id->cx;
339 struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
341 cx18_try_fmt_sliced_vbi_cap(file, fh, fmt);
344 * Changing the Encoder's Raw VBI parameters won't have any effect
345 * if any analog capture is ongoing
347 if (cx18_raw_vbi(cx) && atomic_read(&cx->ana_capturing) > 0)
351 * Set the service_lines requested in the digitizer/slicer registers.
352 * Note, cx18_av_vbi() wipes some "impossible" service lines in the
353 * passed in fmt->fmt.sliced under valid calling conditions
355 ret = v4l2_subdev_call(cx->sd_av, vbi, s_sliced_fmt, &fmt->fmt.sliced);
358 /* Store our current v4l2 sliced VBI settings */
359 cx->vbi.in.type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
360 memcpy(cx->vbi.sliced_in, vbifmt, sizeof(*cx->vbi.sliced_in));
364 #ifdef CONFIG_VIDEO_ADV_DEBUG
365 static int cx18_g_register(struct file *file, void *fh,
366 struct v4l2_dbg_register *reg)
368 struct cx18 *cx = fh2id(fh)->cx;
372 if (reg->reg >= CX18_MEM_OFFSET + CX18_MEM_SIZE)
375 reg->val = cx18_read_enc(cx, reg->reg);
379 static int cx18_s_register(struct file *file, void *fh,
380 const struct v4l2_dbg_register *reg)
382 struct cx18 *cx = fh2id(fh)->cx;
386 if (reg->reg >= CX18_MEM_OFFSET + CX18_MEM_SIZE)
388 cx18_write_enc(cx, reg->val, reg->reg);
393 static int cx18_querycap(struct file *file, void *fh,
394 struct v4l2_capability *vcap)
396 struct cx18_open_id *id = fh2id(fh);
397 struct cx18_stream *s = video_drvdata(file);
398 struct cx18 *cx = id->cx;
400 strlcpy(vcap->driver, CX18_DRIVER_NAME, sizeof(vcap->driver));
401 strlcpy(vcap->card, cx->card_name, sizeof(vcap->card));
402 snprintf(vcap->bus_info, sizeof(vcap->bus_info),
403 "PCI:%s", pci_name(cx->pci_dev));
404 vcap->capabilities = cx->v4l2_cap; /* capabilities */
405 vcap->device_caps = s->v4l2_dev_caps; /* device capabilities */
406 vcap->capabilities |= V4L2_CAP_DEVICE_CAPS;
410 static int cx18_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
412 struct cx18 *cx = fh2id(fh)->cx;
414 return cx18_get_audio_input(cx, vin->index, vin);
417 static int cx18_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
419 struct cx18 *cx = fh2id(fh)->cx;
421 vin->index = cx->audio_input;
422 return cx18_get_audio_input(cx, vin->index, vin);
425 static int cx18_s_audio(struct file *file, void *fh, const struct v4l2_audio *vout)
427 struct cx18 *cx = fh2id(fh)->cx;
429 if (vout->index >= cx->nof_audio_inputs)
431 cx->audio_input = vout->index;
432 cx18_audio_set_io(cx);
436 static int cx18_enum_input(struct file *file, void *fh, struct v4l2_input *vin)
438 struct cx18 *cx = fh2id(fh)->cx;
440 /* set it to defaults from our table */
441 return cx18_get_input(cx, vin->index, vin);
444 static int cx18_cropcap(struct file *file, void *fh,
445 struct v4l2_cropcap *cropcap)
447 struct cx18 *cx = fh2id(fh)->cx;
449 if (cropcap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
451 cropcap->pixelaspect.numerator = cx->is_50hz ? 54 : 11;
452 cropcap->pixelaspect.denominator = cx->is_50hz ? 59 : 10;
456 static int cx18_g_selection(struct file *file, void *fh,
457 struct v4l2_selection *sel)
459 struct cx18 *cx = fh2id(fh)->cx;
461 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
463 switch (sel->target) {
464 case V4L2_SEL_TGT_CROP_BOUNDS:
465 case V4L2_SEL_TGT_CROP_DEFAULT:
466 sel->r.top = sel->r.left = 0;
468 sel->r.height = cx->is_50hz ? 576 : 480;
476 static int cx18_enum_fmt_vid_cap(struct file *file, void *fh,
477 struct v4l2_fmtdesc *fmt)
479 static const struct v4l2_fmtdesc formats[] = {
480 { 0, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
481 "HM12 (YUV 4:1:1)", V4L2_PIX_FMT_HM12, { 0, 0, 0, 0 }
483 { 1, V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FMT_FLAG_COMPRESSED,
484 "MPEG", V4L2_PIX_FMT_MPEG, { 0, 0, 0, 0 }
486 { 2, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
487 "UYVY 4:2:2", V4L2_PIX_FMT_UYVY, { 0, 0, 0, 0 }
491 if (fmt->index > ARRAY_SIZE(formats) - 1)
493 *fmt = formats[fmt->index];
497 static int cx18_g_input(struct file *file, void *fh, unsigned int *i)
499 struct cx18 *cx = fh2id(fh)->cx;
501 *i = cx->active_input;
505 int cx18_s_input(struct file *file, void *fh, unsigned int inp)
507 struct cx18_open_id *id = fh2id(fh);
508 struct cx18 *cx = id->cx;
509 v4l2_std_id std = V4L2_STD_ALL;
510 const struct cx18_card_video_input *card_input =
511 cx->card->video_inputs + inp;
513 if (inp >= cx->nof_inputs)
516 if (inp == cx->active_input) {
517 CX18_DEBUG_INFO("Input unchanged\n");
521 CX18_DEBUG_INFO("Changing input from %d to %d\n",
522 cx->active_input, inp);
524 cx->active_input = inp;
525 /* Set the audio input to whatever is appropriate for the input type. */
526 cx->audio_input = cx->card->video_inputs[inp].audio_index;
527 if (card_input->video_type == V4L2_INPUT_TYPE_TUNER)
529 cx->streams[CX18_ENC_STREAM_TYPE_MPG].video_dev.tvnorms = std;
530 cx->streams[CX18_ENC_STREAM_TYPE_YUV].video_dev.tvnorms = std;
531 cx->streams[CX18_ENC_STREAM_TYPE_VBI].video_dev.tvnorms = std;
533 /* prevent others from messing with the streams until
534 we're finished changing inputs. */
536 cx18_video_set_io(cx);
537 cx18_audio_set_io(cx);
542 static int cx18_g_frequency(struct file *file, void *fh,
543 struct v4l2_frequency *vf)
545 struct cx18 *cx = fh2id(fh)->cx;
550 cx18_call_all(cx, tuner, g_frequency, vf);
554 int cx18_s_frequency(struct file *file, void *fh, const struct v4l2_frequency *vf)
556 struct cx18_open_id *id = fh2id(fh);
557 struct cx18 *cx = id->cx;
563 CX18_DEBUG_INFO("v4l2 ioctl: set frequency %d\n", vf->frequency);
564 cx18_call_all(cx, tuner, s_frequency, vf);
569 static int cx18_g_std(struct file *file, void *fh, v4l2_std_id *std)
571 struct cx18 *cx = fh2id(fh)->cx;
577 int cx18_s_std(struct file *file, void *fh, v4l2_std_id std)
579 struct cx18_open_id *id = fh2id(fh);
580 struct cx18 *cx = id->cx;
582 if ((std & V4L2_STD_ALL) == 0)
588 if (test_bit(CX18_F_I_RADIO_USER, &cx->i_flags) ||
589 atomic_read(&cx->ana_capturing) > 0) {
590 /* Switching standard would turn off the radio or mess
591 with already running streams, prevent that by
597 cx->is_60hz = (std & V4L2_STD_525_60) ? 1 : 0;
598 cx->is_50hz = !cx->is_60hz;
599 cx2341x_handler_set_50hz(&cx->cxhdl, cx->is_50hz);
600 cx->cxhdl.width = 720;
601 cx->cxhdl.height = cx->is_50hz ? 576 : 480;
602 cx->vbi.count = cx->is_50hz ? 18 : 12;
603 cx->vbi.start[0] = cx->is_50hz ? 6 : 10;
604 cx->vbi.start[1] = cx->is_50hz ? 318 : 273;
605 CX18_DEBUG_INFO("Switching standard to %llx.\n",
606 (unsigned long long) cx->std);
609 cx18_call_all(cx, video, s_std, cx->std);
613 static int cx18_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
615 struct cx18_open_id *id = fh2id(fh);
616 struct cx18 *cx = id->cx;
621 cx18_call_all(cx, tuner, s_tuner, vt);
625 static int cx18_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
627 struct cx18 *cx = fh2id(fh)->cx;
632 cx18_call_all(cx, tuner, g_tuner, vt);
634 if (vt->type == V4L2_TUNER_RADIO)
635 strlcpy(vt->name, "cx18 Radio Tuner", sizeof(vt->name));
637 strlcpy(vt->name, "cx18 TV Tuner", sizeof(vt->name));
641 static int cx18_g_sliced_vbi_cap(struct file *file, void *fh,
642 struct v4l2_sliced_vbi_cap *cap)
644 struct cx18 *cx = fh2id(fh)->cx;
645 int set = cx->is_50hz ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525;
648 if (cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
651 cap->service_set = 0;
652 for (f = 0; f < 2; f++) {
653 for (l = 0; l < 24; l++) {
654 if (valid_service_line(f, l, cx->is_50hz)) {
656 * We can find all v4l2 supported vbi services
657 * for the standard, on a valid line for the std
659 cap->service_lines[f][l] = set;
660 cap->service_set |= set;
662 cap->service_lines[f][l] = 0;
665 for (f = 0; f < 3; f++)
666 cap->reserved[f] = 0;
670 static int _cx18_process_idx_data(struct cx18_buffer *buf,
671 struct v4l2_enc_idx *idx)
673 int consumed, remaining;
674 struct v4l2_enc_idx_entry *e_idx;
675 struct cx18_enc_idx_entry *e_buf;
677 /* Frame type lookup: 1=I, 2=P, 4=B */
678 const int mapping[8] = {
679 -1, V4L2_ENC_IDX_FRAME_I, V4L2_ENC_IDX_FRAME_P,
680 -1, V4L2_ENC_IDX_FRAME_B, -1, -1, -1
684 * Assumption here is that a buf holds an integral number of
685 * struct cx18_enc_idx_entry objects and is properly aligned.
686 * This is enforced by the module options on IDX buffer sizes.
688 remaining = buf->bytesused - buf->readpos;
690 e_idx = &idx->entry[idx->entries];
691 e_buf = (struct cx18_enc_idx_entry *) &buf->buf[buf->readpos];
693 while (remaining >= sizeof(struct cx18_enc_idx_entry) &&
694 idx->entries < V4L2_ENC_IDX_ENTRIES) {
696 e_idx->offset = (((u64) le32_to_cpu(e_buf->offset_high)) << 32)
697 | le32_to_cpu(e_buf->offset_low);
699 e_idx->pts = (((u64) (le32_to_cpu(e_buf->pts_high) & 1)) << 32)
700 | le32_to_cpu(e_buf->pts_low);
702 e_idx->length = le32_to_cpu(e_buf->length);
704 e_idx->flags = mapping[le32_to_cpu(e_buf->flags) & 0x7];
706 e_idx->reserved[0] = 0;
707 e_idx->reserved[1] = 0;
710 e_idx = &idx->entry[idx->entries];
713 remaining -= sizeof(struct cx18_enc_idx_entry);
714 consumed += sizeof(struct cx18_enc_idx_entry);
717 /* Swallow any partial entries at the end, if there are any */
718 if (remaining > 0 && remaining < sizeof(struct cx18_enc_idx_entry))
719 consumed += remaining;
721 buf->readpos += consumed;
725 static int cx18_process_idx_data(struct cx18_stream *s, struct cx18_mdl *mdl,
726 struct v4l2_enc_idx *idx)
728 if (s->type != CX18_ENC_STREAM_TYPE_IDX)
731 if (mdl->curr_buf == NULL)
732 mdl->curr_buf = list_first_entry(&mdl->buf_list,
733 struct cx18_buffer, list);
735 if (list_entry_is_past_end(mdl->curr_buf, &mdl->buf_list, list)) {
737 * For some reason we've exhausted the buffers, but the MDL
738 * object still said some data was unread.
739 * Fix that and bail out.
741 mdl->readpos = mdl->bytesused;
745 list_for_each_entry_from(mdl->curr_buf, &mdl->buf_list, list) {
747 /* Skip any empty buffers in the MDL */
748 if (mdl->curr_buf->readpos >= mdl->curr_buf->bytesused)
751 mdl->readpos += _cx18_process_idx_data(mdl->curr_buf, idx);
753 /* exit when MDL drained or request satisfied */
754 if (idx->entries >= V4L2_ENC_IDX_ENTRIES ||
755 mdl->curr_buf->readpos < mdl->curr_buf->bytesused ||
756 mdl->readpos >= mdl->bytesused)
762 static int cx18_g_enc_index(struct file *file, void *fh,
763 struct v4l2_enc_idx *idx)
765 struct cx18 *cx = fh2id(fh)->cx;
766 struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
768 struct cx18_mdl *mdl;
770 if (!cx18_stream_enabled(s)) /* Module options inhibited IDX stream */
773 /* Compute the best case number of entries we can buffer */
775 s->bufs_per_mdl * CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN;
778 tmp = tmp * s->buf_size / sizeof(struct cx18_enc_idx_entry);
780 /* Fill out the header of the return structure */
782 idx->entries_cap = tmp;
783 memset(idx->reserved, 0, sizeof(idx->reserved));
785 /* Pull IDX MDLs and buffers from q_full and populate the entries */
787 mdl = cx18_dequeue(s, &s->q_full);
788 if (mdl == NULL) /* No more IDX data right now */
791 /* Extract the Index entry data from the MDL and buffers */
792 cx18_process_idx_data(s, mdl, idx);
793 if (mdl->readpos < mdl->bytesused) {
794 /* We finished with data remaining, push the MDL back */
795 cx18_push(s, mdl, &s->q_full);
799 /* We drained this MDL, schedule it to go to the firmware */
800 cx18_enqueue(s, mdl, &s->q_free);
802 } while (idx->entries < V4L2_ENC_IDX_ENTRIES);
804 /* Tell the work handler to send free IDX MDLs to the firmware */
805 cx18_stream_load_fw_queue(s);
809 static struct videobuf_queue *cx18_vb_queue(struct cx18_open_id *id)
811 struct videobuf_queue *q = NULL;
812 struct cx18 *cx = id->cx;
813 struct cx18_stream *s = &cx->streams[id->type];
815 switch (s->vb_type) {
816 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
819 case V4L2_BUF_TYPE_VBI_CAPTURE:
827 static int cx18_streamon(struct file *file, void *priv,
828 enum v4l2_buf_type type)
830 struct cx18_open_id *id = file->private_data;
831 struct cx18 *cx = id->cx;
832 struct cx18_stream *s = &cx->streams[id->type];
834 /* Start the hardware only if we're the video device */
835 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
836 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
839 if (id->type != CX18_ENC_STREAM_TYPE_YUV)
842 /* Establish a buffer timeout */
843 mod_timer(&s->vb_timeout, msecs_to_jiffies(2000) + jiffies);
845 return videobuf_streamon(cx18_vb_queue(id));
848 static int cx18_streamoff(struct file *file, void *priv,
849 enum v4l2_buf_type type)
851 struct cx18_open_id *id = file->private_data;
852 struct cx18 *cx = id->cx;
853 struct cx18_stream *s = &cx->streams[id->type];
855 /* Start the hardware only if we're the video device */
856 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
857 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
860 if (id->type != CX18_ENC_STREAM_TYPE_YUV)
863 return videobuf_streamoff(cx18_vb_queue(id));
866 static int cx18_reqbufs(struct file *file, void *priv,
867 struct v4l2_requestbuffers *rb)
869 struct cx18_open_id *id = file->private_data;
870 struct cx18 *cx = id->cx;
871 struct cx18_stream *s = &cx->streams[id->type];
873 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
874 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
877 return videobuf_reqbufs(cx18_vb_queue(id), rb);
880 static int cx18_querybuf(struct file *file, void *priv,
881 struct v4l2_buffer *b)
883 struct cx18_open_id *id = file->private_data;
884 struct cx18 *cx = id->cx;
885 struct cx18_stream *s = &cx->streams[id->type];
887 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
888 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
891 return videobuf_querybuf(cx18_vb_queue(id), b);
894 static int cx18_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
896 struct cx18_open_id *id = file->private_data;
897 struct cx18 *cx = id->cx;
898 struct cx18_stream *s = &cx->streams[id->type];
900 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
901 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
904 return videobuf_qbuf(cx18_vb_queue(id), b);
907 static int cx18_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
909 struct cx18_open_id *id = file->private_data;
910 struct cx18 *cx = id->cx;
911 struct cx18_stream *s = &cx->streams[id->type];
913 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
914 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
917 return videobuf_dqbuf(cx18_vb_queue(id), b, file->f_flags & O_NONBLOCK);
920 static int cx18_encoder_cmd(struct file *file, void *fh,
921 struct v4l2_encoder_cmd *enc)
923 struct cx18_open_id *id = fh2id(fh);
924 struct cx18 *cx = id->cx;
928 case V4L2_ENC_CMD_START:
929 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_START\n");
931 return cx18_start_capture(id);
933 case V4L2_ENC_CMD_STOP:
934 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_STOP\n");
935 enc->flags &= V4L2_ENC_CMD_STOP_AT_GOP_END;
936 cx18_stop_capture(id,
937 enc->flags & V4L2_ENC_CMD_STOP_AT_GOP_END);
940 case V4L2_ENC_CMD_PAUSE:
941 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_PAUSE\n");
943 if (!atomic_read(&cx->ana_capturing))
945 if (test_and_set_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags))
947 h = cx18_find_handle(cx);
948 if (h == CX18_INVALID_TASK_HANDLE) {
949 CX18_ERR("Can't find valid task handle for V4L2_ENC_CMD_PAUSE\n");
953 cx18_vapi(cx, CX18_CPU_CAPTURE_PAUSE, 1, h);
956 case V4L2_ENC_CMD_RESUME:
957 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_RESUME\n");
959 if (!atomic_read(&cx->ana_capturing))
961 if (!test_and_clear_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags))
963 h = cx18_find_handle(cx);
964 if (h == CX18_INVALID_TASK_HANDLE) {
965 CX18_ERR("Can't find valid task handle for V4L2_ENC_CMD_RESUME\n");
968 cx18_vapi(cx, CX18_CPU_CAPTURE_RESUME, 1, h);
973 CX18_DEBUG_IOCTL("Unknown cmd %d\n", enc->cmd);
979 static int cx18_try_encoder_cmd(struct file *file, void *fh,
980 struct v4l2_encoder_cmd *enc)
982 struct cx18 *cx = fh2id(fh)->cx;
985 case V4L2_ENC_CMD_START:
986 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_START\n");
990 case V4L2_ENC_CMD_STOP:
991 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_STOP\n");
992 enc->flags &= V4L2_ENC_CMD_STOP_AT_GOP_END;
995 case V4L2_ENC_CMD_PAUSE:
996 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_PAUSE\n");
1000 case V4L2_ENC_CMD_RESUME:
1001 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_RESUME\n");
1006 CX18_DEBUG_IOCTL("Unknown cmd %d\n", enc->cmd);
1012 static int cx18_log_status(struct file *file, void *fh)
1014 struct cx18 *cx = fh2id(fh)->cx;
1015 struct v4l2_input vidin;
1016 struct v4l2_audio audin;
1019 CX18_INFO("Version: %s Card: %s\n", CX18_VERSION, cx->card_name);
1020 if (cx->hw_flags & CX18_HW_TVEEPROM) {
1023 cx18_read_eeprom(cx, &tv);
1025 cx18_call_all(cx, core, log_status);
1026 cx18_get_input(cx, cx->active_input, &vidin);
1027 cx18_get_audio_input(cx, cx->audio_input, &audin);
1028 CX18_INFO("Video Input: %s\n", vidin.name);
1029 CX18_INFO("Audio Input: %s\n", audin.name);
1030 mutex_lock(&cx->gpio_lock);
1031 CX18_INFO("GPIO: direction 0x%08x, value 0x%08x\n",
1032 cx->gpio_dir, cx->gpio_val);
1033 mutex_unlock(&cx->gpio_lock);
1034 CX18_INFO("Tuner: %s\n",
1035 test_bit(CX18_F_I_RADIO_USER, &cx->i_flags) ? "Radio" : "TV");
1036 v4l2_ctrl_handler_log_status(&cx->cxhdl.hdl, cx->v4l2_dev.name);
1037 CX18_INFO("Status flags: 0x%08lx\n", cx->i_flags);
1038 for (i = 0; i < CX18_MAX_STREAMS; i++) {
1039 struct cx18_stream *s = &cx->streams[i];
1041 if (s->video_dev.v4l2_dev == NULL || s->buffers == 0)
1043 CX18_INFO("Stream %s: status 0x%04lx, %d%% of %d KiB (%d buffers) in use\n",
1044 s->name, s->s_flags,
1045 atomic_read(&s->q_full.depth) * s->bufs_per_mdl * 100
1047 (s->buffers * s->buf_size) / 1024, s->buffers);
1049 CX18_INFO("Read MPEG/VBI: %lld/%lld bytes\n",
1050 (long long)cx->mpg_data_received,
1051 (long long)cx->vbi_data_inserted);
1055 static long cx18_default(struct file *file, void *fh, bool valid_prio,
1056 unsigned int cmd, void *arg)
1058 struct cx18 *cx = fh2id(fh)->cx;
1061 case VIDIOC_INT_RESET: {
1062 u32 val = *(u32 *)arg;
1064 if ((val == 0) || (val & 0x01))
1065 cx18_call_hw(cx, CX18_HW_GPIO_RESET_CTRL, core, reset,
1066 (u32) CX18_GPIO_RESET_Z8F0811);
1076 static const struct v4l2_ioctl_ops cx18_ioctl_ops = {
1077 .vidioc_querycap = cx18_querycap,
1078 .vidioc_s_audio = cx18_s_audio,
1079 .vidioc_g_audio = cx18_g_audio,
1080 .vidioc_enumaudio = cx18_enumaudio,
1081 .vidioc_enum_input = cx18_enum_input,
1082 .vidioc_cropcap = cx18_cropcap,
1083 .vidioc_g_selection = cx18_g_selection,
1084 .vidioc_g_input = cx18_g_input,
1085 .vidioc_s_input = cx18_s_input,
1086 .vidioc_g_frequency = cx18_g_frequency,
1087 .vidioc_s_frequency = cx18_s_frequency,
1088 .vidioc_s_tuner = cx18_s_tuner,
1089 .vidioc_g_tuner = cx18_g_tuner,
1090 .vidioc_g_enc_index = cx18_g_enc_index,
1091 .vidioc_g_std = cx18_g_std,
1092 .vidioc_s_std = cx18_s_std,
1093 .vidioc_log_status = cx18_log_status,
1094 .vidioc_enum_fmt_vid_cap = cx18_enum_fmt_vid_cap,
1095 .vidioc_encoder_cmd = cx18_encoder_cmd,
1096 .vidioc_try_encoder_cmd = cx18_try_encoder_cmd,
1097 .vidioc_g_fmt_vid_cap = cx18_g_fmt_vid_cap,
1098 .vidioc_g_fmt_vbi_cap = cx18_g_fmt_vbi_cap,
1099 .vidioc_g_fmt_sliced_vbi_cap = cx18_g_fmt_sliced_vbi_cap,
1100 .vidioc_s_fmt_vid_cap = cx18_s_fmt_vid_cap,
1101 .vidioc_s_fmt_vbi_cap = cx18_s_fmt_vbi_cap,
1102 .vidioc_s_fmt_sliced_vbi_cap = cx18_s_fmt_sliced_vbi_cap,
1103 .vidioc_try_fmt_vid_cap = cx18_try_fmt_vid_cap,
1104 .vidioc_try_fmt_vbi_cap = cx18_try_fmt_vbi_cap,
1105 .vidioc_try_fmt_sliced_vbi_cap = cx18_try_fmt_sliced_vbi_cap,
1106 .vidioc_g_sliced_vbi_cap = cx18_g_sliced_vbi_cap,
1107 #ifdef CONFIG_VIDEO_ADV_DEBUG
1108 .vidioc_g_register = cx18_g_register,
1109 .vidioc_s_register = cx18_s_register,
1111 .vidioc_default = cx18_default,
1112 .vidioc_streamon = cx18_streamon,
1113 .vidioc_streamoff = cx18_streamoff,
1114 .vidioc_reqbufs = cx18_reqbufs,
1115 .vidioc_querybuf = cx18_querybuf,
1116 .vidioc_qbuf = cx18_qbuf,
1117 .vidioc_dqbuf = cx18_dqbuf,
1118 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1119 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1122 void cx18_set_funcs(struct video_device *vdev)
1124 vdev->ioctl_ops = &cx18_ioctl_ops;