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.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
25 #include "cx18-driver.h"
27 #include "cx18-version.h"
28 #include "cx18-mailbox.h"
30 #include "cx18-queue.h"
31 #include "cx18-fileops.h"
33 #include "cx18-audio.h"
34 #include "cx18-video.h"
35 #include "cx18-streams.h"
36 #include "cx18-ioctl.h"
37 #include "cx18-gpio.h"
38 #include "cx18-controls.h"
39 #include "cx18-cards.h"
40 #include "cx18-av-core.h"
41 #include <media/tveeprom.h>
42 #include <media/v4l2-event.h>
44 u16 cx18_service2vbi(int type)
47 case V4L2_SLICED_TELETEXT_B:
48 return CX18_SLICED_TYPE_TELETEXT_B;
49 case V4L2_SLICED_CAPTION_525:
50 return CX18_SLICED_TYPE_CAPTION_525;
51 case V4L2_SLICED_WSS_625:
52 return CX18_SLICED_TYPE_WSS_625;
54 return CX18_SLICED_TYPE_VPS;
60 /* Check if VBI services are allowed on the (field, line) for the video std */
61 static int valid_service_line(int field, int line, int is_pal)
63 return (is_pal && line >= 6 &&
64 ((field == 0 && line <= 23) || (field == 1 && line <= 22))) ||
65 (!is_pal && line >= 10 && line < 22);
69 * For a (field, line, std) and inbound potential set of services for that line,
70 * return the first valid service of those passed in the incoming set for that
71 * line in priority order:
72 * CC, VPS, or WSS over TELETEXT for well known lines
73 * TELETEXT, before VPS, before CC, before WSS, for other lines
75 static u16 select_service_from_set(int field, int line, u16 set, int is_pal)
77 u16 valid_set = (is_pal ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525);
80 set = set & valid_set;
81 if (set == 0 || !valid_service_line(field, line, is_pal))
84 if (line == 21 && (set & V4L2_SLICED_CAPTION_525))
85 return V4L2_SLICED_CAPTION_525;
87 if (line == 16 && field == 0 && (set & V4L2_SLICED_VPS))
88 return V4L2_SLICED_VPS;
89 if (line == 23 && field == 0 && (set & V4L2_SLICED_WSS_625))
90 return V4L2_SLICED_WSS_625;
94 for (i = 0; i < 32; i++) {
102 * Expand the service_set of *fmt into valid service_lines for the std,
103 * and clear the passed in fmt->service_set
105 void cx18_expand_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal)
107 u16 set = fmt->service_set;
110 fmt->service_set = 0;
111 for (f = 0; f < 2; f++) {
112 for (l = 0; l < 24; l++)
113 fmt->service_lines[f][l] = select_service_from_set(f, l, set, is_pal);
118 * Sanitize the service_lines in *fmt per the video std, and return 1
119 * if any service_line is left as valid after santization
121 static int check_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal)
126 for (f = 0; f < 2; f++) {
127 for (l = 0; l < 24; l++) {
128 fmt->service_lines[f][l] = select_service_from_set(f, l, fmt->service_lines[f][l], is_pal);
129 set |= fmt->service_lines[f][l];
135 /* Compute the service_set from the assumed valid service_lines of *fmt */
136 u16 cx18_get_service_set(struct v4l2_sliced_vbi_format *fmt)
141 for (f = 0; f < 2; f++) {
142 for (l = 0; l < 24; l++)
143 set |= fmt->service_lines[f][l];
148 static int cx18_g_fmt_vid_cap(struct file *file, void *fh,
149 struct v4l2_format *fmt)
151 struct cx18_open_id *id = fh2id(fh);
152 struct cx18 *cx = id->cx;
153 struct cx18_stream *s = &cx->streams[id->type];
154 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
156 pixfmt->width = cx->cxhdl.width;
157 pixfmt->height = cx->cxhdl.height;
158 pixfmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
159 pixfmt->field = V4L2_FIELD_INTERLACED;
160 if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
161 pixfmt->pixelformat = s->pixelformat;
162 pixfmt->sizeimage = s->vb_bytes_per_frame;
163 pixfmt->bytesperline = s->vb_bytes_per_line;
165 pixfmt->pixelformat = V4L2_PIX_FMT_MPEG;
166 pixfmt->sizeimage = 128 * 1024;
167 pixfmt->bytesperline = 0;
172 static int cx18_g_fmt_vbi_cap(struct file *file, void *fh,
173 struct v4l2_format *fmt)
175 struct cx18 *cx = fh2id(fh)->cx;
176 struct v4l2_vbi_format *vbifmt = &fmt->fmt.vbi;
178 vbifmt->sampling_rate = 27000000;
179 vbifmt->offset = 248; /* FIXME - slightly wrong for both 50 & 60 Hz */
180 vbifmt->samples_per_line = vbi_active_samples - 4;
181 vbifmt->sample_format = V4L2_PIX_FMT_GREY;
182 vbifmt->start[0] = cx->vbi.start[0];
183 vbifmt->start[1] = cx->vbi.start[1];
184 vbifmt->count[0] = vbifmt->count[1] = cx->vbi.count;
186 vbifmt->reserved[0] = 0;
187 vbifmt->reserved[1] = 0;
191 static int cx18_g_fmt_sliced_vbi_cap(struct file *file, void *fh,
192 struct v4l2_format *fmt)
194 struct cx18 *cx = fh2id(fh)->cx;
195 struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
197 /* sane, V4L2 spec compliant, defaults */
198 vbifmt->reserved[0] = 0;
199 vbifmt->reserved[1] = 0;
200 vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
201 memset(vbifmt->service_lines, 0, sizeof(vbifmt->service_lines));
202 vbifmt->service_set = 0;
205 * Fetch the configured service_lines and total service_set from the
206 * digitizer/slicer. Note, cx18_av_vbi() wipes the passed in
207 * fmt->fmt.sliced under valid calling conditions
209 if (v4l2_subdev_call(cx->sd_av, vbi, g_sliced_fmt, &fmt->fmt.sliced))
212 vbifmt->service_set = cx18_get_service_set(vbifmt);
216 static int cx18_try_fmt_vid_cap(struct file *file, void *fh,
217 struct v4l2_format *fmt)
219 struct cx18_open_id *id = fh2id(fh);
220 struct cx18 *cx = id->cx;
221 int w = fmt->fmt.pix.width;
222 int h = fmt->fmt.pix.height;
227 if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
228 /* YUV height must be a multiple of 32 */
232 h = min(h, cx->is_50hz ? 576 : 480);
235 fmt->fmt.pix.width = w;
236 fmt->fmt.pix.height = h;
240 static int cx18_try_fmt_vbi_cap(struct file *file, void *fh,
241 struct v4l2_format *fmt)
243 return cx18_g_fmt_vbi_cap(file, fh, fmt);
246 static int cx18_try_fmt_sliced_vbi_cap(struct file *file, void *fh,
247 struct v4l2_format *fmt)
249 struct cx18 *cx = fh2id(fh)->cx;
250 struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
252 vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
253 vbifmt->reserved[0] = 0;
254 vbifmt->reserved[1] = 0;
256 /* If given a service set, expand it validly & clear passed in set */
257 if (vbifmt->service_set)
258 cx18_expand_service_set(vbifmt, cx->is_50hz);
259 /* Sanitize the service_lines, and compute the new set if any valid */
260 if (check_service_set(vbifmt, cx->is_50hz))
261 vbifmt->service_set = cx18_get_service_set(vbifmt);
265 static int cx18_s_fmt_vid_cap(struct file *file, void *fh,
266 struct v4l2_format *fmt)
268 struct cx18_open_id *id = fh2id(fh);
269 struct cx18 *cx = id->cx;
270 struct v4l2_mbus_framefmt mbus_fmt;
271 struct cx18_stream *s = &cx->streams[id->type];
275 ret = cx18_try_fmt_vid_cap(file, fh, fmt);
278 w = fmt->fmt.pix.width;
279 h = fmt->fmt.pix.height;
281 if (cx->cxhdl.width == w && cx->cxhdl.height == h &&
282 s->pixelformat == fmt->fmt.pix.pixelformat)
285 if (atomic_read(&cx->ana_capturing) > 0)
288 s->pixelformat = fmt->fmt.pix.pixelformat;
289 /* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
290 UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */
291 if (s->pixelformat == V4L2_PIX_FMT_HM12) {
292 s->vb_bytes_per_frame = h * 720 * 3 / 2;
293 s->vb_bytes_per_line = 720; /* First plane */
295 s->vb_bytes_per_frame = h * 720 * 2;
296 s->vb_bytes_per_line = 1440; /* Packed */
299 mbus_fmt.width = cx->cxhdl.width = w;
300 mbus_fmt.height = cx->cxhdl.height = h;
301 mbus_fmt.code = MEDIA_BUS_FMT_FIXED;
302 v4l2_subdev_call(cx->sd_av, video, s_mbus_fmt, &mbus_fmt);
303 return cx18_g_fmt_vid_cap(file, fh, fmt);
306 static int cx18_s_fmt_vbi_cap(struct file *file, void *fh,
307 struct v4l2_format *fmt)
309 struct cx18_open_id *id = fh2id(fh);
310 struct cx18 *cx = id->cx;
314 * Changing the Encoder's Raw VBI parameters won't have any effect
315 * if any analog capture is ongoing
317 if (!cx18_raw_vbi(cx) && atomic_read(&cx->ana_capturing) > 0)
321 * Set the digitizer registers for raw active VBI.
322 * Note cx18_av_vbi_wipes out a lot of the passed in fmt under valid
325 ret = v4l2_subdev_call(cx->sd_av, vbi, s_raw_fmt, &fmt->fmt.vbi);
329 /* Store our new v4l2 (non-)sliced VBI state */
330 cx->vbi.sliced_in->service_set = 0;
331 cx->vbi.in.type = V4L2_BUF_TYPE_VBI_CAPTURE;
333 return cx18_g_fmt_vbi_cap(file, fh, fmt);
336 static int cx18_s_fmt_sliced_vbi_cap(struct file *file, void *fh,
337 struct v4l2_format *fmt)
339 struct cx18_open_id *id = fh2id(fh);
340 struct cx18 *cx = id->cx;
342 struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
344 cx18_try_fmt_sliced_vbi_cap(file, fh, fmt);
347 * Changing the Encoder's Raw VBI parameters won't have any effect
348 * if any analog capture is ongoing
350 if (cx18_raw_vbi(cx) && atomic_read(&cx->ana_capturing) > 0)
354 * Set the service_lines requested in the digitizer/slicer registers.
355 * Note, cx18_av_vbi() wipes some "impossible" service lines in the
356 * passed in fmt->fmt.sliced under valid calling conditions
358 ret = v4l2_subdev_call(cx->sd_av, vbi, s_sliced_fmt, &fmt->fmt.sliced);
361 /* Store our current v4l2 sliced VBI settings */
362 cx->vbi.in.type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
363 memcpy(cx->vbi.sliced_in, vbifmt, sizeof(*cx->vbi.sliced_in));
367 #ifdef CONFIG_VIDEO_ADV_DEBUG
368 static int cx18_g_register(struct file *file, void *fh,
369 struct v4l2_dbg_register *reg)
371 struct cx18 *cx = fh2id(fh)->cx;
375 if (reg->reg >= CX18_MEM_OFFSET + CX18_MEM_SIZE)
378 reg->val = cx18_read_enc(cx, reg->reg);
382 static int cx18_s_register(struct file *file, void *fh,
383 const struct v4l2_dbg_register *reg)
385 struct cx18 *cx = fh2id(fh)->cx;
389 if (reg->reg >= CX18_MEM_OFFSET + CX18_MEM_SIZE)
391 cx18_write_enc(cx, reg->val, reg->reg);
396 static int cx18_querycap(struct file *file, void *fh,
397 struct v4l2_capability *vcap)
399 struct cx18_open_id *id = fh2id(fh);
400 struct cx18_stream *s = video_drvdata(file);
401 struct cx18 *cx = id->cx;
403 strlcpy(vcap->driver, CX18_DRIVER_NAME, sizeof(vcap->driver));
404 strlcpy(vcap->card, cx->card_name, sizeof(vcap->card));
405 snprintf(vcap->bus_info, sizeof(vcap->bus_info),
406 "PCI:%s", pci_name(cx->pci_dev));
407 vcap->capabilities = cx->v4l2_cap; /* capabilities */
408 vcap->device_caps = s->v4l2_dev_caps; /* device capabilities */
409 vcap->capabilities |= V4L2_CAP_DEVICE_CAPS;
413 static int cx18_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
415 struct cx18 *cx = fh2id(fh)->cx;
417 return cx18_get_audio_input(cx, vin->index, vin);
420 static int cx18_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
422 struct cx18 *cx = fh2id(fh)->cx;
424 vin->index = cx->audio_input;
425 return cx18_get_audio_input(cx, vin->index, vin);
428 static int cx18_s_audio(struct file *file, void *fh, const struct v4l2_audio *vout)
430 struct cx18 *cx = fh2id(fh)->cx;
432 if (vout->index >= cx->nof_audio_inputs)
434 cx->audio_input = vout->index;
435 cx18_audio_set_io(cx);
439 static int cx18_enum_input(struct file *file, void *fh, struct v4l2_input *vin)
441 struct cx18 *cx = fh2id(fh)->cx;
443 /* set it to defaults from our table */
444 return cx18_get_input(cx, vin->index, vin);
447 static int cx18_cropcap(struct file *file, void *fh,
448 struct v4l2_cropcap *cropcap)
450 struct cx18 *cx = fh2id(fh)->cx;
452 if (cropcap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
454 cropcap->pixelaspect.numerator = cx->is_50hz ? 59 : 10;
455 cropcap->pixelaspect.denominator = cx->is_50hz ? 54 : 11;
459 static int cx18_g_selection(struct file *file, void *fh,
460 struct v4l2_selection *sel)
462 struct cx18 *cx = fh2id(fh)->cx;
464 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
466 switch (sel->target) {
467 case V4L2_SEL_TGT_CROP_BOUNDS:
468 case V4L2_SEL_TGT_CROP_DEFAULT:
469 sel->r.top = sel->r.left = 0;
471 sel->r.height = cx->is_50hz ? 576 : 480;
479 static int cx18_enum_fmt_vid_cap(struct file *file, void *fh,
480 struct v4l2_fmtdesc *fmt)
482 static const struct v4l2_fmtdesc formats[] = {
483 { 0, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
484 "HM12 (YUV 4:1:1)", V4L2_PIX_FMT_HM12, { 0, 0, 0, 0 }
486 { 1, V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FMT_FLAG_COMPRESSED,
487 "MPEG", V4L2_PIX_FMT_MPEG, { 0, 0, 0, 0 }
489 { 2, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
490 "UYVY 4:2:2", V4L2_PIX_FMT_UYVY, { 0, 0, 0, 0 }
494 if (fmt->index > ARRAY_SIZE(formats) - 1)
496 *fmt = formats[fmt->index];
500 static int cx18_g_input(struct file *file, void *fh, unsigned int *i)
502 struct cx18 *cx = fh2id(fh)->cx;
504 *i = cx->active_input;
508 int cx18_s_input(struct file *file, void *fh, unsigned int inp)
510 struct cx18_open_id *id = fh2id(fh);
511 struct cx18 *cx = id->cx;
512 v4l2_std_id std = V4L2_STD_ALL;
513 const struct cx18_card_video_input *card_input =
514 cx->card->video_inputs + inp;
516 if (inp >= cx->nof_inputs)
519 if (inp == cx->active_input) {
520 CX18_DEBUG_INFO("Input unchanged\n");
524 CX18_DEBUG_INFO("Changing input from %d to %d\n",
525 cx->active_input, inp);
527 cx->active_input = inp;
528 /* Set the audio input to whatever is appropriate for the input type. */
529 cx->audio_input = cx->card->video_inputs[inp].audio_index;
530 if (card_input->video_type == V4L2_INPUT_TYPE_TUNER)
532 cx->streams[CX18_ENC_STREAM_TYPE_MPG].video_dev.tvnorms = std;
533 cx->streams[CX18_ENC_STREAM_TYPE_YUV].video_dev.tvnorms = std;
534 cx->streams[CX18_ENC_STREAM_TYPE_VBI].video_dev.tvnorms = std;
536 /* prevent others from messing with the streams until
537 we're finished changing inputs. */
539 cx18_video_set_io(cx);
540 cx18_audio_set_io(cx);
545 static int cx18_g_frequency(struct file *file, void *fh,
546 struct v4l2_frequency *vf)
548 struct cx18 *cx = fh2id(fh)->cx;
553 cx18_call_all(cx, tuner, g_frequency, vf);
557 int cx18_s_frequency(struct file *file, void *fh, const struct v4l2_frequency *vf)
559 struct cx18_open_id *id = fh2id(fh);
560 struct cx18 *cx = id->cx;
566 CX18_DEBUG_INFO("v4l2 ioctl: set frequency %d\n", vf->frequency);
567 cx18_call_all(cx, tuner, s_frequency, vf);
572 static int cx18_g_std(struct file *file, void *fh, v4l2_std_id *std)
574 struct cx18 *cx = fh2id(fh)->cx;
580 int cx18_s_std(struct file *file, void *fh, v4l2_std_id std)
582 struct cx18_open_id *id = fh2id(fh);
583 struct cx18 *cx = id->cx;
585 if ((std & V4L2_STD_ALL) == 0)
591 if (test_bit(CX18_F_I_RADIO_USER, &cx->i_flags) ||
592 atomic_read(&cx->ana_capturing) > 0) {
593 /* Switching standard would turn off the radio or mess
594 with already running streams, prevent that by
600 cx->is_60hz = (std & V4L2_STD_525_60) ? 1 : 0;
601 cx->is_50hz = !cx->is_60hz;
602 cx2341x_handler_set_50hz(&cx->cxhdl, cx->is_50hz);
603 cx->cxhdl.width = 720;
604 cx->cxhdl.height = cx->is_50hz ? 576 : 480;
605 cx->vbi.count = cx->is_50hz ? 18 : 12;
606 cx->vbi.start[0] = cx->is_50hz ? 6 : 10;
607 cx->vbi.start[1] = cx->is_50hz ? 318 : 273;
608 CX18_DEBUG_INFO("Switching standard to %llx.\n",
609 (unsigned long long) cx->std);
612 cx18_call_all(cx, video, s_std, cx->std);
616 static int cx18_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
618 struct cx18_open_id *id = fh2id(fh);
619 struct cx18 *cx = id->cx;
624 cx18_call_all(cx, tuner, s_tuner, vt);
628 static int cx18_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
630 struct cx18 *cx = fh2id(fh)->cx;
635 cx18_call_all(cx, tuner, g_tuner, vt);
637 if (vt->type == V4L2_TUNER_RADIO)
638 strlcpy(vt->name, "cx18 Radio Tuner", sizeof(vt->name));
640 strlcpy(vt->name, "cx18 TV Tuner", sizeof(vt->name));
644 static int cx18_g_sliced_vbi_cap(struct file *file, void *fh,
645 struct v4l2_sliced_vbi_cap *cap)
647 struct cx18 *cx = fh2id(fh)->cx;
648 int set = cx->is_50hz ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525;
651 if (cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
654 cap->service_set = 0;
655 for (f = 0; f < 2; f++) {
656 for (l = 0; l < 24; l++) {
657 if (valid_service_line(f, l, cx->is_50hz)) {
659 * We can find all v4l2 supported vbi services
660 * for the standard, on a valid line for the std
662 cap->service_lines[f][l] = set;
663 cap->service_set |= set;
665 cap->service_lines[f][l] = 0;
668 for (f = 0; f < 3; f++)
669 cap->reserved[f] = 0;
673 static int _cx18_process_idx_data(struct cx18_buffer *buf,
674 struct v4l2_enc_idx *idx)
676 int consumed, remaining;
677 struct v4l2_enc_idx_entry *e_idx;
678 struct cx18_enc_idx_entry *e_buf;
680 /* Frame type lookup: 1=I, 2=P, 4=B */
681 const int mapping[8] = {
682 -1, V4L2_ENC_IDX_FRAME_I, V4L2_ENC_IDX_FRAME_P,
683 -1, V4L2_ENC_IDX_FRAME_B, -1, -1, -1
687 * Assumption here is that a buf holds an integral number of
688 * struct cx18_enc_idx_entry objects and is properly aligned.
689 * This is enforced by the module options on IDX buffer sizes.
691 remaining = buf->bytesused - buf->readpos;
693 e_idx = &idx->entry[idx->entries];
694 e_buf = (struct cx18_enc_idx_entry *) &buf->buf[buf->readpos];
696 while (remaining >= sizeof(struct cx18_enc_idx_entry) &&
697 idx->entries < V4L2_ENC_IDX_ENTRIES) {
699 e_idx->offset = (((u64) le32_to_cpu(e_buf->offset_high)) << 32)
700 | le32_to_cpu(e_buf->offset_low);
702 e_idx->pts = (((u64) (le32_to_cpu(e_buf->pts_high) & 1)) << 32)
703 | le32_to_cpu(e_buf->pts_low);
705 e_idx->length = le32_to_cpu(e_buf->length);
707 e_idx->flags = mapping[le32_to_cpu(e_buf->flags) & 0x7];
709 e_idx->reserved[0] = 0;
710 e_idx->reserved[1] = 0;
713 e_idx = &idx->entry[idx->entries];
716 remaining -= sizeof(struct cx18_enc_idx_entry);
717 consumed += sizeof(struct cx18_enc_idx_entry);
720 /* Swallow any partial entries at the end, if there are any */
721 if (remaining > 0 && remaining < sizeof(struct cx18_enc_idx_entry))
722 consumed += remaining;
724 buf->readpos += consumed;
728 static int cx18_process_idx_data(struct cx18_stream *s, struct cx18_mdl *mdl,
729 struct v4l2_enc_idx *idx)
731 if (s->type != CX18_ENC_STREAM_TYPE_IDX)
734 if (mdl->curr_buf == NULL)
735 mdl->curr_buf = list_first_entry(&mdl->buf_list,
736 struct cx18_buffer, list);
738 if (list_entry_is_past_end(mdl->curr_buf, &mdl->buf_list, list)) {
740 * For some reason we've exhausted the buffers, but the MDL
741 * object still said some data was unread.
742 * Fix that and bail out.
744 mdl->readpos = mdl->bytesused;
748 list_for_each_entry_from(mdl->curr_buf, &mdl->buf_list, list) {
750 /* Skip any empty buffers in the MDL */
751 if (mdl->curr_buf->readpos >= mdl->curr_buf->bytesused)
754 mdl->readpos += _cx18_process_idx_data(mdl->curr_buf, idx);
756 /* exit when MDL drained or request satisfied */
757 if (idx->entries >= V4L2_ENC_IDX_ENTRIES ||
758 mdl->curr_buf->readpos < mdl->curr_buf->bytesused ||
759 mdl->readpos >= mdl->bytesused)
765 static int cx18_g_enc_index(struct file *file, void *fh,
766 struct v4l2_enc_idx *idx)
768 struct cx18 *cx = fh2id(fh)->cx;
769 struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
771 struct cx18_mdl *mdl;
773 if (!cx18_stream_enabled(s)) /* Module options inhibited IDX stream */
776 /* Compute the best case number of entries we can buffer */
778 s->bufs_per_mdl * CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN;
781 tmp = tmp * s->buf_size / sizeof(struct cx18_enc_idx_entry);
783 /* Fill out the header of the return structure */
785 idx->entries_cap = tmp;
786 memset(idx->reserved, 0, sizeof(idx->reserved));
788 /* Pull IDX MDLs and buffers from q_full and populate the entries */
790 mdl = cx18_dequeue(s, &s->q_full);
791 if (mdl == NULL) /* No more IDX data right now */
794 /* Extract the Index entry data from the MDL and buffers */
795 cx18_process_idx_data(s, mdl, idx);
796 if (mdl->readpos < mdl->bytesused) {
797 /* We finished with data remaining, push the MDL back */
798 cx18_push(s, mdl, &s->q_full);
802 /* We drained this MDL, schedule it to go to the firmware */
803 cx18_enqueue(s, mdl, &s->q_free);
805 } while (idx->entries < V4L2_ENC_IDX_ENTRIES);
807 /* Tell the work handler to send free IDX MDLs to the firmware */
808 cx18_stream_load_fw_queue(s);
812 static struct videobuf_queue *cx18_vb_queue(struct cx18_open_id *id)
814 struct videobuf_queue *q = NULL;
815 struct cx18 *cx = id->cx;
816 struct cx18_stream *s = &cx->streams[id->type];
818 switch (s->vb_type) {
819 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
822 case V4L2_BUF_TYPE_VBI_CAPTURE:
830 static int cx18_streamon(struct file *file, void *priv,
831 enum v4l2_buf_type type)
833 struct cx18_open_id *id = file->private_data;
834 struct cx18 *cx = id->cx;
835 struct cx18_stream *s = &cx->streams[id->type];
837 /* Start the hardware only if we're the video device */
838 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
839 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
842 if (id->type != CX18_ENC_STREAM_TYPE_YUV)
845 /* Establish a buffer timeout */
846 mod_timer(&s->vb_timeout, msecs_to_jiffies(2000) + jiffies);
848 return videobuf_streamon(cx18_vb_queue(id));
851 static int cx18_streamoff(struct file *file, void *priv,
852 enum v4l2_buf_type type)
854 struct cx18_open_id *id = file->private_data;
855 struct cx18 *cx = id->cx;
856 struct cx18_stream *s = &cx->streams[id->type];
858 /* Start the hardware only if we're the video device */
859 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
860 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
863 if (id->type != CX18_ENC_STREAM_TYPE_YUV)
866 return videobuf_streamoff(cx18_vb_queue(id));
869 static int cx18_reqbufs(struct file *file, void *priv,
870 struct v4l2_requestbuffers *rb)
872 struct cx18_open_id *id = file->private_data;
873 struct cx18 *cx = id->cx;
874 struct cx18_stream *s = &cx->streams[id->type];
876 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
877 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
880 return videobuf_reqbufs(cx18_vb_queue(id), rb);
883 static int cx18_querybuf(struct file *file, void *priv,
884 struct v4l2_buffer *b)
886 struct cx18_open_id *id = file->private_data;
887 struct cx18 *cx = id->cx;
888 struct cx18_stream *s = &cx->streams[id->type];
890 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
891 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
894 return videobuf_querybuf(cx18_vb_queue(id), b);
897 static int cx18_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
899 struct cx18_open_id *id = file->private_data;
900 struct cx18 *cx = id->cx;
901 struct cx18_stream *s = &cx->streams[id->type];
903 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
904 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
907 return videobuf_qbuf(cx18_vb_queue(id), b);
910 static int cx18_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
912 struct cx18_open_id *id = file->private_data;
913 struct cx18 *cx = id->cx;
914 struct cx18_stream *s = &cx->streams[id->type];
916 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
917 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
920 return videobuf_dqbuf(cx18_vb_queue(id), b, file->f_flags & O_NONBLOCK);
923 static int cx18_encoder_cmd(struct file *file, void *fh,
924 struct v4l2_encoder_cmd *enc)
926 struct cx18_open_id *id = fh2id(fh);
927 struct cx18 *cx = id->cx;
931 case V4L2_ENC_CMD_START:
932 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_START\n");
934 return cx18_start_capture(id);
936 case V4L2_ENC_CMD_STOP:
937 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_STOP\n");
938 enc->flags &= V4L2_ENC_CMD_STOP_AT_GOP_END;
939 cx18_stop_capture(id,
940 enc->flags & V4L2_ENC_CMD_STOP_AT_GOP_END);
943 case V4L2_ENC_CMD_PAUSE:
944 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_PAUSE\n");
946 if (!atomic_read(&cx->ana_capturing))
948 if (test_and_set_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags))
950 h = cx18_find_handle(cx);
951 if (h == CX18_INVALID_TASK_HANDLE) {
952 CX18_ERR("Can't find valid task handle for "
953 "V4L2_ENC_CMD_PAUSE\n");
957 cx18_vapi(cx, CX18_CPU_CAPTURE_PAUSE, 1, h);
960 case V4L2_ENC_CMD_RESUME:
961 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_RESUME\n");
963 if (!atomic_read(&cx->ana_capturing))
965 if (!test_and_clear_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags))
967 h = cx18_find_handle(cx);
968 if (h == CX18_INVALID_TASK_HANDLE) {
969 CX18_ERR("Can't find valid task handle for "
970 "V4L2_ENC_CMD_RESUME\n");
973 cx18_vapi(cx, CX18_CPU_CAPTURE_RESUME, 1, h);
978 CX18_DEBUG_IOCTL("Unknown cmd %d\n", enc->cmd);
984 static int cx18_try_encoder_cmd(struct file *file, void *fh,
985 struct v4l2_encoder_cmd *enc)
987 struct cx18 *cx = fh2id(fh)->cx;
990 case V4L2_ENC_CMD_START:
991 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_START\n");
995 case V4L2_ENC_CMD_STOP:
996 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_STOP\n");
997 enc->flags &= V4L2_ENC_CMD_STOP_AT_GOP_END;
1000 case V4L2_ENC_CMD_PAUSE:
1001 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_PAUSE\n");
1005 case V4L2_ENC_CMD_RESUME:
1006 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_RESUME\n");
1011 CX18_DEBUG_IOCTL("Unknown cmd %d\n", enc->cmd);
1017 static int cx18_log_status(struct file *file, void *fh)
1019 struct cx18 *cx = fh2id(fh)->cx;
1020 struct v4l2_input vidin;
1021 struct v4l2_audio audin;
1024 CX18_INFO("Version: %s Card: %s\n", CX18_VERSION, cx->card_name);
1025 if (cx->hw_flags & CX18_HW_TVEEPROM) {
1028 cx18_read_eeprom(cx, &tv);
1030 cx18_call_all(cx, core, log_status);
1031 cx18_get_input(cx, cx->active_input, &vidin);
1032 cx18_get_audio_input(cx, cx->audio_input, &audin);
1033 CX18_INFO("Video Input: %s\n", vidin.name);
1034 CX18_INFO("Audio Input: %s\n", audin.name);
1035 mutex_lock(&cx->gpio_lock);
1036 CX18_INFO("GPIO: direction 0x%08x, value 0x%08x\n",
1037 cx->gpio_dir, cx->gpio_val);
1038 mutex_unlock(&cx->gpio_lock);
1039 CX18_INFO("Tuner: %s\n",
1040 test_bit(CX18_F_I_RADIO_USER, &cx->i_flags) ? "Radio" : "TV");
1041 v4l2_ctrl_handler_log_status(&cx->cxhdl.hdl, cx->v4l2_dev.name);
1042 CX18_INFO("Status flags: 0x%08lx\n", cx->i_flags);
1043 for (i = 0; i < CX18_MAX_STREAMS; i++) {
1044 struct cx18_stream *s = &cx->streams[i];
1046 if (s->video_dev.v4l2_dev == NULL || s->buffers == 0)
1048 CX18_INFO("Stream %s: status 0x%04lx, %d%% of %d KiB (%d buffers) in use\n",
1049 s->name, s->s_flags,
1050 atomic_read(&s->q_full.depth) * s->bufs_per_mdl * 100
1052 (s->buffers * s->buf_size) / 1024, s->buffers);
1054 CX18_INFO("Read MPEG/VBI: %lld/%lld bytes\n",
1055 (long long)cx->mpg_data_received,
1056 (long long)cx->vbi_data_inserted);
1060 static long cx18_default(struct file *file, void *fh, bool valid_prio,
1061 unsigned int cmd, void *arg)
1063 struct cx18 *cx = fh2id(fh)->cx;
1066 case VIDIOC_INT_RESET: {
1067 u32 val = *(u32 *)arg;
1069 if ((val == 0) || (val & 0x01))
1070 cx18_call_hw(cx, CX18_HW_GPIO_RESET_CTRL, core, reset,
1071 (u32) CX18_GPIO_RESET_Z8F0811);
1081 static const struct v4l2_ioctl_ops cx18_ioctl_ops = {
1082 .vidioc_querycap = cx18_querycap,
1083 .vidioc_s_audio = cx18_s_audio,
1084 .vidioc_g_audio = cx18_g_audio,
1085 .vidioc_enumaudio = cx18_enumaudio,
1086 .vidioc_enum_input = cx18_enum_input,
1087 .vidioc_cropcap = cx18_cropcap,
1088 .vidioc_g_selection = cx18_g_selection,
1089 .vidioc_g_input = cx18_g_input,
1090 .vidioc_s_input = cx18_s_input,
1091 .vidioc_g_frequency = cx18_g_frequency,
1092 .vidioc_s_frequency = cx18_s_frequency,
1093 .vidioc_s_tuner = cx18_s_tuner,
1094 .vidioc_g_tuner = cx18_g_tuner,
1095 .vidioc_g_enc_index = cx18_g_enc_index,
1096 .vidioc_g_std = cx18_g_std,
1097 .vidioc_s_std = cx18_s_std,
1098 .vidioc_log_status = cx18_log_status,
1099 .vidioc_enum_fmt_vid_cap = cx18_enum_fmt_vid_cap,
1100 .vidioc_encoder_cmd = cx18_encoder_cmd,
1101 .vidioc_try_encoder_cmd = cx18_try_encoder_cmd,
1102 .vidioc_g_fmt_vid_cap = cx18_g_fmt_vid_cap,
1103 .vidioc_g_fmt_vbi_cap = cx18_g_fmt_vbi_cap,
1104 .vidioc_g_fmt_sliced_vbi_cap = cx18_g_fmt_sliced_vbi_cap,
1105 .vidioc_s_fmt_vid_cap = cx18_s_fmt_vid_cap,
1106 .vidioc_s_fmt_vbi_cap = cx18_s_fmt_vbi_cap,
1107 .vidioc_s_fmt_sliced_vbi_cap = cx18_s_fmt_sliced_vbi_cap,
1108 .vidioc_try_fmt_vid_cap = cx18_try_fmt_vid_cap,
1109 .vidioc_try_fmt_vbi_cap = cx18_try_fmt_vbi_cap,
1110 .vidioc_try_fmt_sliced_vbi_cap = cx18_try_fmt_sliced_vbi_cap,
1111 .vidioc_g_sliced_vbi_cap = cx18_g_sliced_vbi_cap,
1112 #ifdef CONFIG_VIDEO_ADV_DEBUG
1113 .vidioc_g_register = cx18_g_register,
1114 .vidioc_s_register = cx18_s_register,
1116 .vidioc_default = cx18_default,
1117 .vidioc_streamon = cx18_streamon,
1118 .vidioc_streamoff = cx18_streamoff,
1119 .vidioc_reqbufs = cx18_reqbufs,
1120 .vidioc_querybuf = cx18_querybuf,
1121 .vidioc_qbuf = cx18_qbuf,
1122 .vidioc_dqbuf = cx18_dqbuf,
1123 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1124 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1127 void cx18_set_funcs(struct video_device *vdev)
1129 vdev->ioctl_ops = &cx18_ioctl_ops;