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-chip-ident.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;
161 if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
162 pixfmt->pixelformat = s->pixelformat;
163 /* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
164 UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */
165 if (s->pixelformat == V4L2_PIX_FMT_HM12)
166 pixfmt->sizeimage = pixfmt->height * 720 * 3 / 2;
168 pixfmt->sizeimage = pixfmt->height * 720 * 2;
169 pixfmt->bytesperline = 720;
171 pixfmt->pixelformat = V4L2_PIX_FMT_MPEG;
172 pixfmt->sizeimage = 128 * 1024;
173 pixfmt->bytesperline = 0;
178 static int cx18_g_fmt_vbi_cap(struct file *file, void *fh,
179 struct v4l2_format *fmt)
181 struct cx18 *cx = fh2id(fh)->cx;
182 struct v4l2_vbi_format *vbifmt = &fmt->fmt.vbi;
184 vbifmt->sampling_rate = 27000000;
185 vbifmt->offset = 248; /* FIXME - slightly wrong for both 50 & 60 Hz */
186 vbifmt->samples_per_line = vbi_active_samples - 4;
187 vbifmt->sample_format = V4L2_PIX_FMT_GREY;
188 vbifmt->start[0] = cx->vbi.start[0];
189 vbifmt->start[1] = cx->vbi.start[1];
190 vbifmt->count[0] = vbifmt->count[1] = cx->vbi.count;
192 vbifmt->reserved[0] = 0;
193 vbifmt->reserved[1] = 0;
197 static int cx18_g_fmt_sliced_vbi_cap(struct file *file, void *fh,
198 struct v4l2_format *fmt)
200 struct cx18 *cx = fh2id(fh)->cx;
201 struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
203 /* sane, V4L2 spec compliant, defaults */
204 vbifmt->reserved[0] = 0;
205 vbifmt->reserved[1] = 0;
206 vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
207 memset(vbifmt->service_lines, 0, sizeof(vbifmt->service_lines));
208 vbifmt->service_set = 0;
211 * Fetch the configured service_lines and total service_set from the
212 * digitizer/slicer. Note, cx18_av_vbi() wipes the passed in
213 * fmt->fmt.sliced under valid calling conditions
215 if (v4l2_subdev_call(cx->sd_av, vbi, g_sliced_fmt, &fmt->fmt.sliced))
218 /* Ensure V4L2 spec compliant output */
219 vbifmt->reserved[0] = 0;
220 vbifmt->reserved[1] = 0;
221 vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
222 vbifmt->service_set = cx18_get_service_set(vbifmt);
226 static int cx18_try_fmt_vid_cap(struct file *file, void *fh,
227 struct v4l2_format *fmt)
229 struct cx18_open_id *id = fh2id(fh);
230 struct cx18 *cx = id->cx;
231 int w = fmt->fmt.pix.width;
232 int h = fmt->fmt.pix.height;
237 if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
238 /* YUV height must be a multiple of 32 */
242 h = min(h, cx->is_50hz ? 576 : 480);
245 fmt->fmt.pix.width = w;
246 fmt->fmt.pix.height = h;
250 static int cx18_try_fmt_vbi_cap(struct file *file, void *fh,
251 struct v4l2_format *fmt)
253 return cx18_g_fmt_vbi_cap(file, fh, fmt);
256 static int cx18_try_fmt_sliced_vbi_cap(struct file *file, void *fh,
257 struct v4l2_format *fmt)
259 struct cx18 *cx = fh2id(fh)->cx;
260 struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
262 vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
263 vbifmt->reserved[0] = 0;
264 vbifmt->reserved[1] = 0;
266 /* If given a service set, expand it validly & clear passed in set */
267 if (vbifmt->service_set)
268 cx18_expand_service_set(vbifmt, cx->is_50hz);
269 /* Sanitize the service_lines, and compute the new set if any valid */
270 if (check_service_set(vbifmt, cx->is_50hz))
271 vbifmt->service_set = cx18_get_service_set(vbifmt);
275 static int cx18_s_fmt_vid_cap(struct file *file, void *fh,
276 struct v4l2_format *fmt)
278 struct cx18_open_id *id = fh2id(fh);
279 struct cx18 *cx = id->cx;
280 struct v4l2_mbus_framefmt mbus_fmt;
281 struct cx18_stream *s = &cx->streams[id->type];
285 ret = cx18_try_fmt_vid_cap(file, fh, fmt);
288 w = fmt->fmt.pix.width;
289 h = fmt->fmt.pix.height;
291 if (cx->cxhdl.width == w && cx->cxhdl.height == h &&
292 s->pixelformat == fmt->fmt.pix.pixelformat)
295 if (atomic_read(&cx->ana_capturing) > 0)
298 s->pixelformat = fmt->fmt.pix.pixelformat;
300 mbus_fmt.width = cx->cxhdl.width = w;
301 mbus_fmt.height = cx->cxhdl.height = h;
302 mbus_fmt.code = V4L2_MBUS_FMT_FIXED;
303 v4l2_subdev_call(cx->sd_av, video, s_mbus_fmt, &mbus_fmt);
304 return cx18_g_fmt_vid_cap(file, fh, fmt);
307 static int cx18_s_fmt_vbi_cap(struct file *file, void *fh,
308 struct v4l2_format *fmt)
310 struct cx18_open_id *id = fh2id(fh);
311 struct cx18 *cx = id->cx;
315 * Changing the Encoder's Raw VBI parameters won't have any effect
316 * if any analog capture is ongoing
318 if (!cx18_raw_vbi(cx) && atomic_read(&cx->ana_capturing) > 0)
322 * Set the digitizer registers for raw active VBI.
323 * Note cx18_av_vbi_wipes out a lot of the passed in fmt under valid
326 ret = v4l2_subdev_call(cx->sd_av, vbi, s_raw_fmt, &fmt->fmt.vbi);
330 /* Store our new v4l2 (non-)sliced VBI state */
331 cx->vbi.sliced_in->service_set = 0;
332 cx->vbi.in.type = V4L2_BUF_TYPE_VBI_CAPTURE;
334 return cx18_g_fmt_vbi_cap(file, fh, fmt);
337 static int cx18_s_fmt_sliced_vbi_cap(struct file *file, void *fh,
338 struct v4l2_format *fmt)
340 struct cx18_open_id *id = fh2id(fh);
341 struct cx18 *cx = id->cx;
343 struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
345 cx18_try_fmt_sliced_vbi_cap(file, fh, fmt);
348 * Changing the Encoder's Raw VBI parameters won't have any effect
349 * if any analog capture is ongoing
351 if (cx18_raw_vbi(cx) && atomic_read(&cx->ana_capturing) > 0)
355 * Set the service_lines requested in the digitizer/slicer registers.
356 * Note, cx18_av_vbi() wipes some "impossible" service lines in the
357 * passed in fmt->fmt.sliced under valid calling conditions
359 ret = v4l2_subdev_call(cx->sd_av, vbi, s_sliced_fmt, &fmt->fmt.sliced);
362 /* Store our current v4l2 sliced VBI settings */
363 cx->vbi.in.type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
364 memcpy(cx->vbi.sliced_in, vbifmt, sizeof(*cx->vbi.sliced_in));
368 static int cx18_g_chip_ident(struct file *file, void *fh,
369 struct v4l2_dbg_chip_ident *chip)
371 struct cx18 *cx = fh2id(fh)->cx;
374 chip->ident = V4L2_IDENT_NONE;
376 switch (chip->match.type) {
377 case V4L2_CHIP_MATCH_HOST:
378 switch (chip->match.addr) {
380 chip->ident = V4L2_IDENT_CX23418;
381 chip->revision = cx18_read_reg(cx, 0xC72028);
385 * The A/V decoder is always present, but in the rare
386 * case that the card doesn't have analog, we don't
387 * use it. We find it w/o using the cx->sd_av pointer
389 cx18_call_hw(cx, CX18_HW_418_AV,
390 core, g_chip_ident, chip);
394 * Could return ident = V4L2_IDENT_UNKNOWN if we had
395 * other host chips at higher addresses, but we don't
397 err = -EINVAL; /* per V4L2 spec */
401 case V4L2_CHIP_MATCH_I2C_DRIVER:
402 /* If needed, returns V4L2_IDENT_AMBIGUOUS without extra work */
403 cx18_call_all(cx, core, g_chip_ident, chip);
405 case V4L2_CHIP_MATCH_I2C_ADDR:
407 * We could return V4L2_IDENT_UNKNOWN, but we don't do the work
408 * to look if a chip is at the address with no driver. That's a
409 * dangerous thing to do with EEPROMs anyway.
411 cx18_call_all(cx, core, g_chip_ident, chip);
420 #ifdef CONFIG_VIDEO_ADV_DEBUG
421 static int cx18_cxc(struct cx18 *cx, unsigned int cmd, void *arg)
423 struct v4l2_dbg_register *regs = arg;
425 if (!capable(CAP_SYS_ADMIN))
427 if (regs->reg >= CX18_MEM_OFFSET + CX18_MEM_SIZE)
431 if (cmd == VIDIOC_DBG_S_REGISTER)
432 cx18_write_enc(cx, regs->val, regs->reg);
434 regs->val = cx18_read_enc(cx, regs->reg);
438 static int cx18_g_register(struct file *file, void *fh,
439 struct v4l2_dbg_register *reg)
441 struct cx18 *cx = fh2id(fh)->cx;
443 if (v4l2_chip_match_host(®->match))
444 return cx18_cxc(cx, VIDIOC_DBG_G_REGISTER, reg);
445 /* FIXME - errors shouldn't be ignored */
446 cx18_call_all(cx, core, g_register, reg);
450 static int cx18_s_register(struct file *file, void *fh,
451 struct v4l2_dbg_register *reg)
453 struct cx18 *cx = fh2id(fh)->cx;
455 if (v4l2_chip_match_host(®->match))
456 return cx18_cxc(cx, VIDIOC_DBG_S_REGISTER, reg);
457 /* FIXME - errors shouldn't be ignored */
458 cx18_call_all(cx, core, s_register, reg);
463 static int cx18_querycap(struct file *file, void *fh,
464 struct v4l2_capability *vcap)
466 struct cx18 *cx = fh2id(fh)->cx;
468 strlcpy(vcap->driver, CX18_DRIVER_NAME, sizeof(vcap->driver));
469 strlcpy(vcap->card, cx->card_name, sizeof(vcap->card));
470 snprintf(vcap->bus_info, sizeof(vcap->bus_info),
471 "PCI:%s", pci_name(cx->pci_dev));
472 vcap->version = CX18_DRIVER_VERSION; /* version */
473 vcap->capabilities = cx->v4l2_cap; /* capabilities */
477 static int cx18_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
479 struct cx18 *cx = fh2id(fh)->cx;
481 return cx18_get_audio_input(cx, vin->index, vin);
484 static int cx18_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
486 struct cx18 *cx = fh2id(fh)->cx;
488 vin->index = cx->audio_input;
489 return cx18_get_audio_input(cx, vin->index, vin);
492 static int cx18_s_audio(struct file *file, void *fh, struct v4l2_audio *vout)
494 struct cx18 *cx = fh2id(fh)->cx;
496 if (vout->index >= cx->nof_audio_inputs)
498 cx->audio_input = vout->index;
499 cx18_audio_set_io(cx);
503 static int cx18_enum_input(struct file *file, void *fh, struct v4l2_input *vin)
505 struct cx18 *cx = fh2id(fh)->cx;
507 /* set it to defaults from our table */
508 return cx18_get_input(cx, vin->index, vin);
511 static int cx18_cropcap(struct file *file, void *fh,
512 struct v4l2_cropcap *cropcap)
514 struct cx18 *cx = fh2id(fh)->cx;
516 if (cropcap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
518 cropcap->bounds.top = cropcap->bounds.left = 0;
519 cropcap->bounds.width = 720;
520 cropcap->bounds.height = cx->is_50hz ? 576 : 480;
521 cropcap->pixelaspect.numerator = cx->is_50hz ? 59 : 10;
522 cropcap->pixelaspect.denominator = cx->is_50hz ? 54 : 11;
523 cropcap->defrect = cropcap->bounds;
527 static int cx18_s_crop(struct file *file, void *fh, struct v4l2_crop *crop)
529 struct cx18_open_id *id = fh2id(fh);
530 struct cx18 *cx = id->cx;
532 if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
534 CX18_DEBUG_WARN("VIDIOC_S_CROP not implemented\n");
538 static int cx18_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
540 struct cx18 *cx = fh2id(fh)->cx;
542 if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
544 CX18_DEBUG_WARN("VIDIOC_G_CROP not implemented\n");
548 static int cx18_enum_fmt_vid_cap(struct file *file, void *fh,
549 struct v4l2_fmtdesc *fmt)
551 static const struct v4l2_fmtdesc formats[] = {
552 { 0, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
553 "HM12 (YUV 4:1:1)", V4L2_PIX_FMT_HM12, { 0, 0, 0, 0 }
555 { 1, V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FMT_FLAG_COMPRESSED,
556 "MPEG", V4L2_PIX_FMT_MPEG, { 0, 0, 0, 0 }
558 { 2, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
559 "UYVY 4:2:2", V4L2_PIX_FMT_UYVY, { 0, 0, 0, 0 }
563 if (fmt->index > ARRAY_SIZE(formats) - 1)
565 *fmt = formats[fmt->index];
569 static int cx18_g_input(struct file *file, void *fh, unsigned int *i)
571 struct cx18 *cx = fh2id(fh)->cx;
573 *i = cx->active_input;
577 int cx18_s_input(struct file *file, void *fh, unsigned int inp)
579 struct cx18_open_id *id = fh2id(fh);
580 struct cx18 *cx = id->cx;
582 if (inp >= cx->nof_inputs)
585 if (inp == cx->active_input) {
586 CX18_DEBUG_INFO("Input unchanged\n");
590 CX18_DEBUG_INFO("Changing input from %d to %d\n",
591 cx->active_input, inp);
593 cx->active_input = inp;
594 /* Set the audio input to whatever is appropriate for the input type. */
595 cx->audio_input = cx->card->video_inputs[inp].audio_index;
597 /* prevent others from messing with the streams until
598 we're finished changing inputs. */
600 cx18_video_set_io(cx);
601 cx18_audio_set_io(cx);
606 static int cx18_g_frequency(struct file *file, void *fh,
607 struct v4l2_frequency *vf)
609 struct cx18 *cx = fh2id(fh)->cx;
614 cx18_call_all(cx, tuner, g_frequency, vf);
618 int cx18_s_frequency(struct file *file, void *fh, struct v4l2_frequency *vf)
620 struct cx18_open_id *id = fh2id(fh);
621 struct cx18 *cx = id->cx;
627 CX18_DEBUG_INFO("v4l2 ioctl: set frequency %d\n", vf->frequency);
628 cx18_call_all(cx, tuner, s_frequency, vf);
633 static int cx18_g_std(struct file *file, void *fh, v4l2_std_id *std)
635 struct cx18 *cx = fh2id(fh)->cx;
641 int cx18_s_std(struct file *file, void *fh, v4l2_std_id *std)
643 struct cx18_open_id *id = fh2id(fh);
644 struct cx18 *cx = id->cx;
646 if ((*std & V4L2_STD_ALL) == 0)
652 if (test_bit(CX18_F_I_RADIO_USER, &cx->i_flags) ||
653 atomic_read(&cx->ana_capturing) > 0) {
654 /* Switching standard would turn off the radio or mess
655 with already running streams, prevent that by
661 cx->is_60hz = (*std & V4L2_STD_525_60) ? 1 : 0;
662 cx->is_50hz = !cx->is_60hz;
663 cx2341x_handler_set_50hz(&cx->cxhdl, cx->is_50hz);
664 cx->cxhdl.width = 720;
665 cx->cxhdl.height = cx->is_50hz ? 576 : 480;
666 cx->vbi.count = cx->is_50hz ? 18 : 12;
667 cx->vbi.start[0] = cx->is_50hz ? 6 : 10;
668 cx->vbi.start[1] = cx->is_50hz ? 318 : 273;
669 CX18_DEBUG_INFO("Switching standard to %llx.\n",
670 (unsigned long long) cx->std);
673 cx18_call_all(cx, core, s_std, cx->std);
677 static int cx18_s_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
679 struct cx18_open_id *id = fh2id(fh);
680 struct cx18 *cx = id->cx;
685 cx18_call_all(cx, tuner, s_tuner, vt);
689 static int cx18_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
691 struct cx18 *cx = fh2id(fh)->cx;
696 cx18_call_all(cx, tuner, g_tuner, vt);
698 if (vt->type == V4L2_TUNER_RADIO)
699 strlcpy(vt->name, "cx18 Radio Tuner", sizeof(vt->name));
701 strlcpy(vt->name, "cx18 TV Tuner", sizeof(vt->name));
705 static int cx18_g_sliced_vbi_cap(struct file *file, void *fh,
706 struct v4l2_sliced_vbi_cap *cap)
708 struct cx18 *cx = fh2id(fh)->cx;
709 int set = cx->is_50hz ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525;
712 if (cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
715 cap->service_set = 0;
716 for (f = 0; f < 2; f++) {
717 for (l = 0; l < 24; l++) {
718 if (valid_service_line(f, l, cx->is_50hz)) {
720 * We can find all v4l2 supported vbi services
721 * for the standard, on a valid line for the std
723 cap->service_lines[f][l] = set;
724 cap->service_set |= set;
726 cap->service_lines[f][l] = 0;
729 for (f = 0; f < 3; f++)
730 cap->reserved[f] = 0;
734 static int _cx18_process_idx_data(struct cx18_buffer *buf,
735 struct v4l2_enc_idx *idx)
737 int consumed, remaining;
738 struct v4l2_enc_idx_entry *e_idx;
739 struct cx18_enc_idx_entry *e_buf;
741 /* Frame type lookup: 1=I, 2=P, 4=B */
742 const int mapping[8] = {
743 -1, V4L2_ENC_IDX_FRAME_I, V4L2_ENC_IDX_FRAME_P,
744 -1, V4L2_ENC_IDX_FRAME_B, -1, -1, -1
748 * Assumption here is that a buf holds an integral number of
749 * struct cx18_enc_idx_entry objects and is properly aligned.
750 * This is enforced by the module options on IDX buffer sizes.
752 remaining = buf->bytesused - buf->readpos;
754 e_idx = &idx->entry[idx->entries];
755 e_buf = (struct cx18_enc_idx_entry *) &buf->buf[buf->readpos];
757 while (remaining >= sizeof(struct cx18_enc_idx_entry) &&
758 idx->entries < V4L2_ENC_IDX_ENTRIES) {
760 e_idx->offset = (((u64) le32_to_cpu(e_buf->offset_high)) << 32)
761 | le32_to_cpu(e_buf->offset_low);
763 e_idx->pts = (((u64) (le32_to_cpu(e_buf->pts_high) & 1)) << 32)
764 | le32_to_cpu(e_buf->pts_low);
766 e_idx->length = le32_to_cpu(e_buf->length);
768 e_idx->flags = mapping[le32_to_cpu(e_buf->flags) & 0x7];
770 e_idx->reserved[0] = 0;
771 e_idx->reserved[1] = 0;
774 e_idx = &idx->entry[idx->entries];
777 remaining -= sizeof(struct cx18_enc_idx_entry);
778 consumed += sizeof(struct cx18_enc_idx_entry);
781 /* Swallow any partial entries at the end, if there are any */
782 if (remaining > 0 && remaining < sizeof(struct cx18_enc_idx_entry))
783 consumed += remaining;
785 buf->readpos += consumed;
789 static int cx18_process_idx_data(struct cx18_stream *s, struct cx18_mdl *mdl,
790 struct v4l2_enc_idx *idx)
792 if (s->type != CX18_ENC_STREAM_TYPE_IDX)
795 if (mdl->curr_buf == NULL)
796 mdl->curr_buf = list_first_entry(&mdl->buf_list,
797 struct cx18_buffer, list);
799 if (list_entry_is_past_end(mdl->curr_buf, &mdl->buf_list, list)) {
801 * For some reason we've exhausted the buffers, but the MDL
802 * object still said some data was unread.
803 * Fix that and bail out.
805 mdl->readpos = mdl->bytesused;
809 list_for_each_entry_from(mdl->curr_buf, &mdl->buf_list, list) {
811 /* Skip any empty buffers in the MDL */
812 if (mdl->curr_buf->readpos >= mdl->curr_buf->bytesused)
815 mdl->readpos += _cx18_process_idx_data(mdl->curr_buf, idx);
817 /* exit when MDL drained or request satisfied */
818 if (idx->entries >= V4L2_ENC_IDX_ENTRIES ||
819 mdl->curr_buf->readpos < mdl->curr_buf->bytesused ||
820 mdl->readpos >= mdl->bytesused)
826 static int cx18_g_enc_index(struct file *file, void *fh,
827 struct v4l2_enc_idx *idx)
829 struct cx18 *cx = fh2id(fh)->cx;
830 struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
832 struct cx18_mdl *mdl;
834 if (!cx18_stream_enabled(s)) /* Module options inhibited IDX stream */
837 /* Compute the best case number of entries we can buffer */
839 s->bufs_per_mdl * CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN;
842 tmp = tmp * s->buf_size / sizeof(struct cx18_enc_idx_entry);
844 /* Fill out the header of the return structure */
846 idx->entries_cap = tmp;
847 memset(idx->reserved, 0, sizeof(idx->reserved));
849 /* Pull IDX MDLs and buffers from q_full and populate the entries */
851 mdl = cx18_dequeue(s, &s->q_full);
852 if (mdl == NULL) /* No more IDX data right now */
855 /* Extract the Index entry data from the MDL and buffers */
856 cx18_process_idx_data(s, mdl, idx);
857 if (mdl->readpos < mdl->bytesused) {
858 /* We finished with data remaining, push the MDL back */
859 cx18_push(s, mdl, &s->q_full);
863 /* We drained this MDL, schedule it to go to the firmware */
864 cx18_enqueue(s, mdl, &s->q_free);
866 } while (idx->entries < V4L2_ENC_IDX_ENTRIES);
868 /* Tell the work handler to send free IDX MDLs to the firmware */
869 cx18_stream_load_fw_queue(s);
873 static struct videobuf_queue *cx18_vb_queue(struct cx18_open_id *id)
875 struct videobuf_queue *q = NULL;
876 struct cx18 *cx = id->cx;
877 struct cx18_stream *s = &cx->streams[id->type];
879 switch (s->vb_type) {
880 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
883 case V4L2_BUF_TYPE_VBI_CAPTURE:
891 static int cx18_streamon(struct file *file, void *priv,
892 enum v4l2_buf_type type)
894 struct cx18_open_id *id = file->private_data;
895 struct cx18 *cx = id->cx;
896 struct cx18_stream *s = &cx->streams[id->type];
898 /* Start the hardware only if we're the video device */
899 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
900 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
903 if (id->type != CX18_ENC_STREAM_TYPE_YUV)
906 /* Establish a buffer timeout */
907 mod_timer(&s->vb_timeout, msecs_to_jiffies(2000) + jiffies);
909 return videobuf_streamon(cx18_vb_queue(id));
912 static int cx18_streamoff(struct file *file, void *priv,
913 enum v4l2_buf_type type)
915 struct cx18_open_id *id = file->private_data;
916 struct cx18 *cx = id->cx;
917 struct cx18_stream *s = &cx->streams[id->type];
919 /* Start the hardware only if we're the video device */
920 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
921 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
924 if (id->type != CX18_ENC_STREAM_TYPE_YUV)
927 return videobuf_streamoff(cx18_vb_queue(id));
930 static int cx18_reqbufs(struct file *file, void *priv,
931 struct v4l2_requestbuffers *rb)
933 struct cx18_open_id *id = file->private_data;
934 struct cx18 *cx = id->cx;
935 struct cx18_stream *s = &cx->streams[id->type];
937 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
938 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
941 return videobuf_reqbufs(cx18_vb_queue(id), rb);
944 static int cx18_querybuf(struct file *file, void *priv,
945 struct v4l2_buffer *b)
947 struct cx18_open_id *id = file->private_data;
948 struct cx18 *cx = id->cx;
949 struct cx18_stream *s = &cx->streams[id->type];
951 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
952 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
955 return videobuf_querybuf(cx18_vb_queue(id), b);
958 static int cx18_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
960 struct cx18_open_id *id = file->private_data;
961 struct cx18 *cx = id->cx;
962 struct cx18_stream *s = &cx->streams[id->type];
964 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
965 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
968 return videobuf_qbuf(cx18_vb_queue(id), b);
971 static int cx18_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
973 struct cx18_open_id *id = file->private_data;
974 struct cx18 *cx = id->cx;
975 struct cx18_stream *s = &cx->streams[id->type];
977 if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
978 (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
981 return videobuf_dqbuf(cx18_vb_queue(id), b, file->f_flags & O_NONBLOCK);
984 static int cx18_encoder_cmd(struct file *file, void *fh,
985 struct v4l2_encoder_cmd *enc)
987 struct cx18_open_id *id = fh2id(fh);
988 struct cx18 *cx = id->cx;
992 case V4L2_ENC_CMD_START:
993 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_START\n");
995 return cx18_start_capture(id);
997 case V4L2_ENC_CMD_STOP:
998 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_STOP\n");
999 enc->flags &= V4L2_ENC_CMD_STOP_AT_GOP_END;
1000 cx18_stop_capture(id,
1001 enc->flags & V4L2_ENC_CMD_STOP_AT_GOP_END);
1004 case V4L2_ENC_CMD_PAUSE:
1005 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_PAUSE\n");
1007 if (!atomic_read(&cx->ana_capturing))
1009 if (test_and_set_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags))
1011 h = cx18_find_handle(cx);
1012 if (h == CX18_INVALID_TASK_HANDLE) {
1013 CX18_ERR("Can't find valid task handle for "
1014 "V4L2_ENC_CMD_PAUSE\n");
1018 cx18_vapi(cx, CX18_CPU_CAPTURE_PAUSE, 1, h);
1021 case V4L2_ENC_CMD_RESUME:
1022 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_RESUME\n");
1024 if (!atomic_read(&cx->ana_capturing))
1026 if (!test_and_clear_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags))
1028 h = cx18_find_handle(cx);
1029 if (h == CX18_INVALID_TASK_HANDLE) {
1030 CX18_ERR("Can't find valid task handle for "
1031 "V4L2_ENC_CMD_RESUME\n");
1034 cx18_vapi(cx, CX18_CPU_CAPTURE_RESUME, 1, h);
1039 CX18_DEBUG_IOCTL("Unknown cmd %d\n", enc->cmd);
1045 static int cx18_try_encoder_cmd(struct file *file, void *fh,
1046 struct v4l2_encoder_cmd *enc)
1048 struct cx18 *cx = fh2id(fh)->cx;
1051 case V4L2_ENC_CMD_START:
1052 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_START\n");
1056 case V4L2_ENC_CMD_STOP:
1057 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_STOP\n");
1058 enc->flags &= V4L2_ENC_CMD_STOP_AT_GOP_END;
1061 case V4L2_ENC_CMD_PAUSE:
1062 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_PAUSE\n");
1066 case V4L2_ENC_CMD_RESUME:
1067 CX18_DEBUG_IOCTL("V4L2_ENC_CMD_RESUME\n");
1072 CX18_DEBUG_IOCTL("Unknown cmd %d\n", enc->cmd);
1078 static int cx18_log_status(struct file *file, void *fh)
1080 struct cx18 *cx = fh2id(fh)->cx;
1081 struct v4l2_input vidin;
1082 struct v4l2_audio audin;
1085 CX18_INFO("================= START STATUS CARD #%d "
1086 "=================\n", cx->instance);
1087 CX18_INFO("Version: %s Card: %s\n", CX18_VERSION, cx->card_name);
1088 if (cx->hw_flags & CX18_HW_TVEEPROM) {
1091 cx18_read_eeprom(cx, &tv);
1093 cx18_call_all(cx, core, log_status);
1094 cx18_get_input(cx, cx->active_input, &vidin);
1095 cx18_get_audio_input(cx, cx->audio_input, &audin);
1096 CX18_INFO("Video Input: %s\n", vidin.name);
1097 CX18_INFO("Audio Input: %s\n", audin.name);
1098 mutex_lock(&cx->gpio_lock);
1099 CX18_INFO("GPIO: direction 0x%08x, value 0x%08x\n",
1100 cx->gpio_dir, cx->gpio_val);
1101 mutex_unlock(&cx->gpio_lock);
1102 CX18_INFO("Tuner: %s\n",
1103 test_bit(CX18_F_I_RADIO_USER, &cx->i_flags) ? "Radio" : "TV");
1104 v4l2_ctrl_handler_log_status(&cx->cxhdl.hdl, cx->v4l2_dev.name);
1105 CX18_INFO("Status flags: 0x%08lx\n", cx->i_flags);
1106 for (i = 0; i < CX18_MAX_STREAMS; i++) {
1107 struct cx18_stream *s = &cx->streams[i];
1109 if (s->video_dev == NULL || s->buffers == 0)
1111 CX18_INFO("Stream %s: status 0x%04lx, %d%% of %d KiB (%d buffers) in use\n",
1112 s->name, s->s_flags,
1113 atomic_read(&s->q_full.depth) * s->bufs_per_mdl * 100
1115 (s->buffers * s->buf_size) / 1024, s->buffers);
1117 CX18_INFO("Read MPEG/VBI: %lld/%lld bytes\n",
1118 (long long)cx->mpg_data_received,
1119 (long long)cx->vbi_data_inserted);
1120 CX18_INFO("================== END STATUS CARD #%d "
1121 "==================\n", cx->instance);
1125 static long cx18_default(struct file *file, void *fh, bool valid_prio,
1128 struct cx18 *cx = fh2id(fh)->cx;
1131 case VIDIOC_INT_RESET: {
1132 u32 val = *(u32 *)arg;
1134 if ((val == 0) || (val & 0x01))
1135 cx18_call_hw(cx, CX18_HW_GPIO_RESET_CTRL, core, reset,
1136 (u32) CX18_GPIO_RESET_Z8F0811);
1146 long cx18_v4l2_ioctl(struct file *filp, unsigned int cmd,
1149 struct video_device *vfd = video_devdata(filp);
1150 struct cx18_open_id *id = file2id(filp);
1151 struct cx18 *cx = id->cx;
1154 mutex_lock(&cx->serialize_lock);
1156 if (cx18_debug & CX18_DBGFLG_IOCTL)
1157 vfd->debug = V4L2_DEBUG_IOCTL | V4L2_DEBUG_IOCTL_ARG;
1158 res = video_ioctl2(filp, cmd, arg);
1160 mutex_unlock(&cx->serialize_lock);
1164 static const struct v4l2_ioctl_ops cx18_ioctl_ops = {
1165 .vidioc_querycap = cx18_querycap,
1166 .vidioc_s_audio = cx18_s_audio,
1167 .vidioc_g_audio = cx18_g_audio,
1168 .vidioc_enumaudio = cx18_enumaudio,
1169 .vidioc_enum_input = cx18_enum_input,
1170 .vidioc_cropcap = cx18_cropcap,
1171 .vidioc_s_crop = cx18_s_crop,
1172 .vidioc_g_crop = cx18_g_crop,
1173 .vidioc_g_input = cx18_g_input,
1174 .vidioc_s_input = cx18_s_input,
1175 .vidioc_g_frequency = cx18_g_frequency,
1176 .vidioc_s_frequency = cx18_s_frequency,
1177 .vidioc_s_tuner = cx18_s_tuner,
1178 .vidioc_g_tuner = cx18_g_tuner,
1179 .vidioc_g_enc_index = cx18_g_enc_index,
1180 .vidioc_g_std = cx18_g_std,
1181 .vidioc_s_std = cx18_s_std,
1182 .vidioc_log_status = cx18_log_status,
1183 .vidioc_enum_fmt_vid_cap = cx18_enum_fmt_vid_cap,
1184 .vidioc_encoder_cmd = cx18_encoder_cmd,
1185 .vidioc_try_encoder_cmd = cx18_try_encoder_cmd,
1186 .vidioc_g_fmt_vid_cap = cx18_g_fmt_vid_cap,
1187 .vidioc_g_fmt_vbi_cap = cx18_g_fmt_vbi_cap,
1188 .vidioc_g_fmt_sliced_vbi_cap = cx18_g_fmt_sliced_vbi_cap,
1189 .vidioc_s_fmt_vid_cap = cx18_s_fmt_vid_cap,
1190 .vidioc_s_fmt_vbi_cap = cx18_s_fmt_vbi_cap,
1191 .vidioc_s_fmt_sliced_vbi_cap = cx18_s_fmt_sliced_vbi_cap,
1192 .vidioc_try_fmt_vid_cap = cx18_try_fmt_vid_cap,
1193 .vidioc_try_fmt_vbi_cap = cx18_try_fmt_vbi_cap,
1194 .vidioc_try_fmt_sliced_vbi_cap = cx18_try_fmt_sliced_vbi_cap,
1195 .vidioc_g_sliced_vbi_cap = cx18_g_sliced_vbi_cap,
1196 .vidioc_g_chip_ident = cx18_g_chip_ident,
1197 #ifdef CONFIG_VIDEO_ADV_DEBUG
1198 .vidioc_g_register = cx18_g_register,
1199 .vidioc_s_register = cx18_s_register,
1201 .vidioc_default = cx18_default,
1202 .vidioc_streamon = cx18_streamon,
1203 .vidioc_streamoff = cx18_streamoff,
1204 .vidioc_reqbufs = cx18_reqbufs,
1205 .vidioc_querybuf = cx18_querybuf,
1206 .vidioc_qbuf = cx18_qbuf,
1207 .vidioc_dqbuf = cx18_dqbuf,
1210 void cx18_set_funcs(struct video_device *vdev)
1212 vdev->ioctl_ops = &cx18_ioctl_ops;