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1// SPDX-License-Identifier: GPL-2.0-only2/*3 *4 * Copyright (C) 2005 Mike Isely <isely@pobox.com>5 * Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>6 */7 8#include <linux/kernel.h>9#include <linux/slab.h>10#include "pvrusb2-context.h"11#include "pvrusb2-hdw.h"12#include "pvrusb2.h"13#include "pvrusb2-debug.h"14#include "pvrusb2-v4l2.h"15#include "pvrusb2-ioread.h"16#include <linux/videodev2.h>17#include <linux/module.h>18#include <media/v4l2-dev.h>19#include <media/v4l2-device.h>20#include <media/v4l2-fh.h>21#include <media/v4l2-common.h>22#include <media/v4l2-ioctl.h>23 24struct pvr2_v4l2_dev;25struct pvr2_v4l2_fh;26struct pvr2_v4l2;27 28struct pvr2_v4l2_dev {29 struct video_device devbase; /* MUST be first! */30 struct pvr2_v4l2 *v4lp;31 struct pvr2_context_stream *stream;32 /* Information about this device: */33 enum pvr2_config config; /* Expected stream format */34 int v4l_type; /* V4L defined type for this device node */35 enum pvr2_v4l_type minor_type; /* pvr2-understood minor device type */36};37 38struct pvr2_v4l2_fh {39 struct v4l2_fh fh;40 struct pvr2_channel channel;41 struct pvr2_v4l2_dev *pdi;42 struct pvr2_ioread *rhp;43 struct file *file;44 wait_queue_head_t wait_data;45 int fw_mode_flag;46 /* Map contiguous ordinal value to input id */47 unsigned char *input_map;48 unsigned int input_cnt;49};50 51struct pvr2_v4l2 {52 struct pvr2_channel channel;53 54 /* streams - Note that these must be separately, individually,55 * allocated pointers. This is because the v4l core is going to56 * manage their deletion - separately, individually... */57 struct pvr2_v4l2_dev *dev_video;58 struct pvr2_v4l2_dev *dev_radio;59};60 61static int video_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1};62module_param_array(video_nr, int, NULL, 0444);63MODULE_PARM_DESC(video_nr, "Offset for device's video dev minor");64static int radio_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1};65module_param_array(radio_nr, int, NULL, 0444);66MODULE_PARM_DESC(radio_nr, "Offset for device's radio dev minor");67static int vbi_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1};68module_param_array(vbi_nr, int, NULL, 0444);69MODULE_PARM_DESC(vbi_nr, "Offset for device's vbi dev minor");70 71#define PVR_FORMAT_PIX 072#define PVR_FORMAT_VBI 173 74static struct v4l2_format pvr_format [] = {75 [PVR_FORMAT_PIX] = {76 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,77 .fmt = {78 .pix = {79 .width = 720,80 .height = 576,81 .pixelformat = V4L2_PIX_FMT_MPEG,82 .field = V4L2_FIELD_INTERLACED,83 /* FIXME : Don't know what to put here... */84 .sizeimage = 32 * 1024,85 }86 }87 },88 [PVR_FORMAT_VBI] = {89 .type = V4L2_BUF_TYPE_VBI_CAPTURE,90 .fmt = {91 .vbi = {92 .sampling_rate = 27000000,93 .offset = 248,94 .samples_per_line = 1443,95 .sample_format = V4L2_PIX_FMT_GREY,96 .start = { 0, 0 },97 .count = { 0, 0 },98 .flags = 0,99 }100 }101 }102};103 104 105 106/*107 * This is part of Video 4 Linux API. These procedures handle ioctl() calls.108 */109static int pvr2_querycap(struct file *file, void *priv, struct v4l2_capability *cap)110{111 struct pvr2_v4l2_fh *fh = file->private_data;112 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;113 114 strscpy(cap->driver, "pvrusb2", sizeof(cap->driver));115 strscpy(cap->bus_info, pvr2_hdw_get_bus_info(hdw),116 sizeof(cap->bus_info));117 strscpy(cap->card, pvr2_hdw_get_desc(hdw), sizeof(cap->card));118 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER |119 V4L2_CAP_AUDIO | V4L2_CAP_RADIO |120 V4L2_CAP_READWRITE | V4L2_CAP_DEVICE_CAPS;121 return 0;122}123 124static int pvr2_g_std(struct file *file, void *priv, v4l2_std_id *std)125{126 struct pvr2_v4l2_fh *fh = file->private_data;127 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;128 int val = 0;129 int ret;130 131 ret = pvr2_ctrl_get_value(132 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_STDCUR), &val);133 *std = val;134 return ret;135}136 137static int pvr2_s_std(struct file *file, void *priv, v4l2_std_id std)138{139 struct pvr2_v4l2_fh *fh = file->private_data;140 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;141 int ret;142 143 ret = pvr2_ctrl_set_value(144 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_STDCUR), std);145 pvr2_hdw_commit_ctl(hdw);146 return ret;147}148 149static int pvr2_querystd(struct file *file, void *priv, v4l2_std_id *std)150{151 struct pvr2_v4l2_fh *fh = file->private_data;152 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;153 int val = 0;154 int ret;155 156 ret = pvr2_ctrl_get_value(157 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_STDDETECT), &val);158 *std = val;159 return ret;160}161 162static int pvr2_enum_input(struct file *file, void *priv, struct v4l2_input *vi)163{164 struct pvr2_v4l2_fh *fh = file->private_data;165 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;166 struct pvr2_ctrl *cptr;167 struct v4l2_input tmp;168 unsigned int cnt;169 int val;170 171 cptr = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_INPUT);172 173 memset(&tmp, 0, sizeof(tmp));174 tmp.index = vi->index;175 if (vi->index >= fh->input_cnt)176 return -EINVAL;177 val = fh->input_map[vi->index];178 switch (val) {179 case PVR2_CVAL_INPUT_TV:180 case PVR2_CVAL_INPUT_DTV:181 case PVR2_CVAL_INPUT_RADIO:182 tmp.type = V4L2_INPUT_TYPE_TUNER;183 break;184 case PVR2_CVAL_INPUT_SVIDEO:185 case PVR2_CVAL_INPUT_COMPOSITE:186 tmp.type = V4L2_INPUT_TYPE_CAMERA;187 break;188 default:189 return -EINVAL;190 }191 192 cnt = 0;193 pvr2_ctrl_get_valname(cptr, val,194 tmp.name, sizeof(tmp.name) - 1, &cnt);195 tmp.name[cnt] = 0;196 197 /* Don't bother with audioset, since this driver currently198 always switches the audio whenever the video is199 switched. */200 201 /* Handling std is a tougher problem. It doesn't make202 sense in cases where a device might be multi-standard.203 We could just copy out the current value for the204 standard, but it can change over time. For now just205 leave it zero. */206 *vi = tmp;207 return 0;208}209 210static int pvr2_g_input(struct file *file, void *priv, unsigned int *i)211{212 struct pvr2_v4l2_fh *fh = file->private_data;213 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;214 unsigned int idx;215 struct pvr2_ctrl *cptr;216 int val;217 int ret;218 219 cptr = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_INPUT);220 val = 0;221 ret = pvr2_ctrl_get_value(cptr, &val);222 *i = 0;223 for (idx = 0; idx < fh->input_cnt; idx++) {224 if (fh->input_map[idx] == val) {225 *i = idx;226 break;227 }228 }229 return ret;230}231 232static int pvr2_s_input(struct file *file, void *priv, unsigned int inp)233{234 struct pvr2_v4l2_fh *fh = file->private_data;235 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;236 int ret;237 238 if (inp >= fh->input_cnt)239 return -EINVAL;240 ret = pvr2_ctrl_set_value(241 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_INPUT),242 fh->input_map[inp]);243 pvr2_hdw_commit_ctl(hdw);244 return ret;245}246 247static int pvr2_enumaudio(struct file *file, void *priv, struct v4l2_audio *vin)248{249 /* pkt: FIXME: We are returning one "fake" input here250 which could very well be called "whatever_we_like".251 This is for apps that want to see an audio input252 just to feel comfortable, as well as to test if253 it can do stereo or sth. There is actually no guarantee254 that the actual audio input cannot change behind the app's255 back, but most applications should not mind that either.256 257 Hopefully, mplayer people will work with us on this (this258 whole mess is to support mplayer pvr://), or Hans will come259 up with a more standard way to say "we have inputs but we260 don 't want you to change them independent of video" which261 will sort this mess.262 */263 264 if (vin->index > 0)265 return -EINVAL;266 strscpy(vin->name, "PVRUSB2 Audio", sizeof(vin->name));267 vin->capability = V4L2_AUDCAP_STEREO;268 return 0;269}270 271static int pvr2_g_audio(struct file *file, void *priv, struct v4l2_audio *vin)272{273 /* pkt: FIXME: see above comment (VIDIOC_ENUMAUDIO) */274 vin->index = 0;275 strscpy(vin->name, "PVRUSB2 Audio", sizeof(vin->name));276 vin->capability = V4L2_AUDCAP_STEREO;277 return 0;278}279 280static int pvr2_s_audio(struct file *file, void *priv, const struct v4l2_audio *vout)281{282 if (vout->index)283 return -EINVAL;284 return 0;285}286 287static int pvr2_g_tuner(struct file *file, void *priv, struct v4l2_tuner *vt)288{289 struct pvr2_v4l2_fh *fh = file->private_data;290 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;291 292 if (vt->index != 0)293 return -EINVAL; /* Only answer for the 1st tuner */294 295 pvr2_hdw_execute_tuner_poll(hdw);296 return pvr2_hdw_get_tuner_status(hdw, vt);297}298 299static int pvr2_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *vt)300{301 struct pvr2_v4l2_fh *fh = file->private_data;302 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;303 int ret;304 305 if (vt->index != 0)306 return -EINVAL;307 308 ret = pvr2_ctrl_set_value(309 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_AUDIOMODE),310 vt->audmode);311 pvr2_hdw_commit_ctl(hdw);312 return ret;313}314 315static int pvr2_s_frequency(struct file *file, void *priv, const struct v4l2_frequency *vf)316{317 struct pvr2_v4l2_fh *fh = file->private_data;318 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;319 unsigned long fv;320 struct v4l2_tuner vt;321 int cur_input;322 struct pvr2_ctrl *ctrlp;323 int ret;324 325 ret = pvr2_hdw_get_tuner_status(hdw, &vt);326 if (ret != 0)327 return ret;328 ctrlp = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_INPUT);329 ret = pvr2_ctrl_get_value(ctrlp, &cur_input);330 if (ret != 0)331 return ret;332 if (vf->type == V4L2_TUNER_RADIO) {333 if (cur_input != PVR2_CVAL_INPUT_RADIO)334 pvr2_ctrl_set_value(ctrlp, PVR2_CVAL_INPUT_RADIO);335 } else {336 if (cur_input == PVR2_CVAL_INPUT_RADIO)337 pvr2_ctrl_set_value(ctrlp, PVR2_CVAL_INPUT_TV);338 }339 fv = vf->frequency;340 if (vt.capability & V4L2_TUNER_CAP_LOW)341 fv = (fv * 125) / 2;342 else343 fv = fv * 62500;344 ret = pvr2_ctrl_set_value(345 pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_FREQUENCY),fv);346 pvr2_hdw_commit_ctl(hdw);347 return ret;348}349 350static int pvr2_g_frequency(struct file *file, void *priv, struct v4l2_frequency *vf)351{352 struct pvr2_v4l2_fh *fh = file->private_data;353 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;354 int val = 0;355 int cur_input;356 struct v4l2_tuner vt;357 int ret;358 359 ret = pvr2_hdw_get_tuner_status(hdw, &vt);360 if (ret != 0)361 return ret;362 ret = pvr2_ctrl_get_value(363 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_FREQUENCY),364 &val);365 if (ret != 0)366 return ret;367 pvr2_ctrl_get_value(368 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_INPUT),369 &cur_input);370 if (cur_input == PVR2_CVAL_INPUT_RADIO)371 vf->type = V4L2_TUNER_RADIO;372 else373 vf->type = V4L2_TUNER_ANALOG_TV;374 if (vt.capability & V4L2_TUNER_CAP_LOW)375 val = (val * 2) / 125;376 else377 val /= 62500;378 vf->frequency = val;379 return 0;380}381 382static int pvr2_enum_fmt_vid_cap(struct file *file, void *priv, struct v4l2_fmtdesc *fd)383{384 /* Only one format is supported: MPEG. */385 if (fd->index)386 return -EINVAL;387 388 fd->pixelformat = V4L2_PIX_FMT_MPEG;389 return 0;390}391 392static int pvr2_g_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *vf)393{394 struct pvr2_v4l2_fh *fh = file->private_data;395 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;396 int val;397 398 memcpy(vf, &pvr_format[PVR_FORMAT_PIX], sizeof(struct v4l2_format));399 val = 0;400 pvr2_ctrl_get_value(401 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_HRES),402 &val);403 vf->fmt.pix.width = val;404 val = 0;405 pvr2_ctrl_get_value(406 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_VRES),407 &val);408 vf->fmt.pix.height = val;409 return 0;410}411 412static int pvr2_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *vf)413{414 struct pvr2_v4l2_fh *fh = file->private_data;415 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;416 int lmin, lmax, ldef;417 struct pvr2_ctrl *hcp, *vcp;418 int h = vf->fmt.pix.height;419 int w = vf->fmt.pix.width;420 421 hcp = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_HRES);422 vcp = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_VRES);423 424 lmin = pvr2_ctrl_get_min(hcp);425 lmax = pvr2_ctrl_get_max(hcp);426 pvr2_ctrl_get_def(hcp, &ldef);427 if (w == -1)428 w = ldef;429 else if (w < lmin)430 w = lmin;431 else if (w > lmax)432 w = lmax;433 lmin = pvr2_ctrl_get_min(vcp);434 lmax = pvr2_ctrl_get_max(vcp);435 pvr2_ctrl_get_def(vcp, &ldef);436 if (h == -1)437 h = ldef;438 else if (h < lmin)439 h = lmin;440 else if (h > lmax)441 h = lmax;442 443 memcpy(vf, &pvr_format[PVR_FORMAT_PIX],444 sizeof(struct v4l2_format));445 vf->fmt.pix.width = w;446 vf->fmt.pix.height = h;447 return 0;448}449 450static int pvr2_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *vf)451{452 struct pvr2_v4l2_fh *fh = file->private_data;453 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;454 struct pvr2_ctrl *hcp, *vcp;455 int ret = pvr2_try_fmt_vid_cap(file, fh, vf);456 457 if (ret)458 return ret;459 hcp = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_HRES);460 vcp = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_VRES);461 pvr2_ctrl_set_value(hcp, vf->fmt.pix.width);462 pvr2_ctrl_set_value(vcp, vf->fmt.pix.height);463 pvr2_hdw_commit_ctl(hdw);464 return 0;465}466 467static int pvr2_streamon(struct file *file, void *priv, enum v4l2_buf_type i)468{469 struct pvr2_v4l2_fh *fh = file->private_data;470 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;471 struct pvr2_v4l2_dev *pdi = fh->pdi;472 int ret;473 474 if (!fh->pdi->stream) {475 /* No stream defined for this node. This means476 that we're not currently allowed to stream from477 this node. */478 return -EPERM;479 }480 ret = pvr2_hdw_set_stream_type(hdw, pdi->config);481 if (ret < 0)482 return ret;483 return pvr2_hdw_set_streaming(hdw, !0);484}485 486static int pvr2_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)487{488 struct pvr2_v4l2_fh *fh = file->private_data;489 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;490 491 if (!fh->pdi->stream) {492 /* No stream defined for this node. This means493 that we're not currently allowed to stream from494 this node. */495 return -EPERM;496 }497 return pvr2_hdw_set_streaming(hdw, 0);498}499 500static int pvr2_queryctrl(struct file *file, void *priv,501 struct v4l2_queryctrl *vc)502{503 struct pvr2_v4l2_fh *fh = file->private_data;504 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;505 struct pvr2_ctrl *cptr;506 int val;507 508 if (vc->id & V4L2_CTRL_FLAG_NEXT_CTRL) {509 cptr = pvr2_hdw_get_ctrl_nextv4l(510 hdw, (vc->id & ~V4L2_CTRL_FLAG_NEXT_CTRL));511 if (cptr)512 vc->id = pvr2_ctrl_get_v4lid(cptr);513 } else {514 cptr = pvr2_hdw_get_ctrl_v4l(hdw, vc->id);515 }516 if (!cptr) {517 pvr2_trace(PVR2_TRACE_V4LIOCTL,518 "QUERYCTRL id=0x%x not implemented here",519 vc->id);520 return -EINVAL;521 }522 523 pvr2_trace(PVR2_TRACE_V4LIOCTL,524 "QUERYCTRL id=0x%x mapping name=%s (%s)",525 vc->id, pvr2_ctrl_get_name(cptr),526 pvr2_ctrl_get_desc(cptr));527 strscpy(vc->name, pvr2_ctrl_get_desc(cptr), sizeof(vc->name));528 vc->flags = pvr2_ctrl_get_v4lflags(cptr);529 pvr2_ctrl_get_def(cptr, &val);530 vc->default_value = val;531 switch (pvr2_ctrl_get_type(cptr)) {532 case pvr2_ctl_enum:533 vc->type = V4L2_CTRL_TYPE_MENU;534 vc->minimum = 0;535 vc->maximum = pvr2_ctrl_get_cnt(cptr) - 1;536 vc->step = 1;537 break;538 case pvr2_ctl_bool:539 vc->type = V4L2_CTRL_TYPE_BOOLEAN;540 vc->minimum = 0;541 vc->maximum = 1;542 vc->step = 1;543 break;544 case pvr2_ctl_int:545 vc->type = V4L2_CTRL_TYPE_INTEGER;546 vc->minimum = pvr2_ctrl_get_min(cptr);547 vc->maximum = pvr2_ctrl_get_max(cptr);548 vc->step = 1;549 break;550 default:551 pvr2_trace(PVR2_TRACE_V4LIOCTL,552 "QUERYCTRL id=0x%x name=%s not mappable",553 vc->id, pvr2_ctrl_get_name(cptr));554 return -EINVAL;555 }556 return 0;557}558 559static int pvr2_querymenu(struct file *file, void *priv, struct v4l2_querymenu *vm)560{561 struct pvr2_v4l2_fh *fh = file->private_data;562 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;563 unsigned int cnt = 0;564 int ret;565 566 ret = pvr2_ctrl_get_valname(pvr2_hdw_get_ctrl_v4l(hdw, vm->id),567 vm->index,568 vm->name, sizeof(vm->name) - 1,569 &cnt);570 vm->name[cnt] = 0;571 return ret;572}573 574static int pvr2_g_ctrl(struct file *file, void *priv, struct v4l2_control *vc)575{576 struct pvr2_v4l2_fh *fh = file->private_data;577 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;578 int val = 0;579 int ret;580 581 ret = pvr2_ctrl_get_value(pvr2_hdw_get_ctrl_v4l(hdw, vc->id),582 &val);583 vc->value = val;584 return ret;585}586 587static int pvr2_s_ctrl(struct file *file, void *priv, struct v4l2_control *vc)588{589 struct pvr2_v4l2_fh *fh = file->private_data;590 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;591 int ret;592 593 ret = pvr2_ctrl_set_value(pvr2_hdw_get_ctrl_v4l(hdw, vc->id),594 vc->value);595 pvr2_hdw_commit_ctl(hdw);596 return ret;597}598 599static int pvr2_g_ext_ctrls(struct file *file, void *priv,600 struct v4l2_ext_controls *ctls)601{602 struct pvr2_v4l2_fh *fh = file->private_data;603 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;604 struct v4l2_ext_control *ctrl;605 struct pvr2_ctrl *cptr;606 unsigned int idx;607 int val;608 int ret;609 610 ret = 0;611 for (idx = 0; idx < ctls->count; idx++) {612 ctrl = ctls->controls + idx;613 cptr = pvr2_hdw_get_ctrl_v4l(hdw, ctrl->id);614 if (cptr) {615 if (ctls->which == V4L2_CTRL_WHICH_DEF_VAL)616 pvr2_ctrl_get_def(cptr, &val);617 else618 ret = pvr2_ctrl_get_value(cptr, &val);619 } else620 ret = -EINVAL;621 622 if (ret) {623 ctls->error_idx = idx;624 return ret;625 }626 /* Ensure that if read as a 64 bit value, the user627 will still get a hopefully sane value */628 ctrl->value64 = 0;629 ctrl->value = val;630 }631 return 0;632}633 634static int pvr2_s_ext_ctrls(struct file *file, void *priv,635 struct v4l2_ext_controls *ctls)636{637 struct pvr2_v4l2_fh *fh = file->private_data;638 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;639 struct v4l2_ext_control *ctrl;640 unsigned int idx;641 int ret;642 643 ret = 0;644 for (idx = 0; idx < ctls->count; idx++) {645 ctrl = ctls->controls + idx;646 ret = pvr2_ctrl_set_value(647 pvr2_hdw_get_ctrl_v4l(hdw, ctrl->id),648 ctrl->value);649 if (ret) {650 ctls->error_idx = idx;651 goto commit;652 }653 }654commit:655 pvr2_hdw_commit_ctl(hdw);656 return ret;657}658 659static int pvr2_try_ext_ctrls(struct file *file, void *priv,660 struct v4l2_ext_controls *ctls)661{662 struct pvr2_v4l2_fh *fh = file->private_data;663 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;664 struct v4l2_ext_control *ctrl;665 struct pvr2_ctrl *pctl;666 unsigned int idx;667 668 /* For the moment just validate that the requested control669 actually exists. */670 for (idx = 0; idx < ctls->count; idx++) {671 ctrl = ctls->controls + idx;672 pctl = pvr2_hdw_get_ctrl_v4l(hdw, ctrl->id);673 if (!pctl) {674 ctls->error_idx = idx;675 return -EINVAL;676 }677 }678 return 0;679}680 681static int pvr2_g_pixelaspect(struct file *file, void *priv,682 int type, struct v4l2_fract *f)683{684 struct pvr2_v4l2_fh *fh = file->private_data;685 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;686 struct v4l2_cropcap cap = { .type = type };687 int ret;688 689 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)690 return -EINVAL;691 ret = pvr2_hdw_get_cropcap(hdw, &cap);692 if (!ret)693 *f = cap.pixelaspect;694 return ret;695}696 697static int pvr2_g_selection(struct file *file, void *priv,698 struct v4l2_selection *sel)699{700 struct pvr2_v4l2_fh *fh = file->private_data;701 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;702 struct v4l2_cropcap cap;703 int val = 0;704 int ret;705 706 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)707 return -EINVAL;708 709 cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;710 711 switch (sel->target) {712 case V4L2_SEL_TGT_CROP:713 ret = pvr2_ctrl_get_value(714 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPL), &val);715 if (ret != 0)716 return -EINVAL;717 sel->r.left = val;718 ret = pvr2_ctrl_get_value(719 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPT), &val);720 if (ret != 0)721 return -EINVAL;722 sel->r.top = val;723 ret = pvr2_ctrl_get_value(724 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPW), &val);725 if (ret != 0)726 return -EINVAL;727 sel->r.width = val;728 ret = pvr2_ctrl_get_value(729 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPH), &val);730 if (ret != 0)731 return -EINVAL;732 sel->r.height = val;733 break;734 case V4L2_SEL_TGT_CROP_DEFAULT:735 ret = pvr2_hdw_get_cropcap(hdw, &cap);736 sel->r = cap.defrect;737 break;738 case V4L2_SEL_TGT_CROP_BOUNDS:739 ret = pvr2_hdw_get_cropcap(hdw, &cap);740 sel->r = cap.bounds;741 break;742 default:743 return -EINVAL;744 }745 return ret;746}747 748static int pvr2_s_selection(struct file *file, void *priv,749 struct v4l2_selection *sel)750{751 struct pvr2_v4l2_fh *fh = file->private_data;752 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;753 int ret;754 755 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||756 sel->target != V4L2_SEL_TGT_CROP)757 return -EINVAL;758 ret = pvr2_ctrl_set_value(759 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPL),760 sel->r.left);761 if (ret != 0)762 goto commit;763 ret = pvr2_ctrl_set_value(764 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPT),765 sel->r.top);766 if (ret != 0)767 goto commit;768 ret = pvr2_ctrl_set_value(769 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPW),770 sel->r.width);771 if (ret != 0)772 goto commit;773 ret = pvr2_ctrl_set_value(774 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPH),775 sel->r.height);776commit:777 pvr2_hdw_commit_ctl(hdw);778 return ret;779}780 781static int pvr2_log_status(struct file *file, void *priv)782{783 struct pvr2_v4l2_fh *fh = file->private_data;784 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;785 786 pvr2_hdw_trigger_module_log(hdw);787 return 0;788}789 790static const struct v4l2_ioctl_ops pvr2_ioctl_ops = {791 .vidioc_querycap = pvr2_querycap,792 .vidioc_s_audio = pvr2_s_audio,793 .vidioc_g_audio = pvr2_g_audio,794 .vidioc_enumaudio = pvr2_enumaudio,795 .vidioc_enum_input = pvr2_enum_input,796 .vidioc_g_pixelaspect = pvr2_g_pixelaspect,797 .vidioc_s_selection = pvr2_s_selection,798 .vidioc_g_selection = pvr2_g_selection,799 .vidioc_g_input = pvr2_g_input,800 .vidioc_s_input = pvr2_s_input,801 .vidioc_g_frequency = pvr2_g_frequency,802 .vidioc_s_frequency = pvr2_s_frequency,803 .vidioc_s_tuner = pvr2_s_tuner,804 .vidioc_g_tuner = pvr2_g_tuner,805 .vidioc_g_std = pvr2_g_std,806 .vidioc_s_std = pvr2_s_std,807 .vidioc_querystd = pvr2_querystd,808 .vidioc_log_status = pvr2_log_status,809 .vidioc_enum_fmt_vid_cap = pvr2_enum_fmt_vid_cap,810 .vidioc_g_fmt_vid_cap = pvr2_g_fmt_vid_cap,811 .vidioc_s_fmt_vid_cap = pvr2_s_fmt_vid_cap,812 .vidioc_try_fmt_vid_cap = pvr2_try_fmt_vid_cap,813 .vidioc_streamon = pvr2_streamon,814 .vidioc_streamoff = pvr2_streamoff,815 .vidioc_queryctrl = pvr2_queryctrl,816 .vidioc_querymenu = pvr2_querymenu,817 .vidioc_g_ctrl = pvr2_g_ctrl,818 .vidioc_s_ctrl = pvr2_s_ctrl,819 .vidioc_g_ext_ctrls = pvr2_g_ext_ctrls,820 .vidioc_s_ext_ctrls = pvr2_s_ext_ctrls,821 .vidioc_try_ext_ctrls = pvr2_try_ext_ctrls,822};823 824static void pvr2_v4l2_dev_destroy(struct pvr2_v4l2_dev *dip)825{826 struct pvr2_hdw *hdw = dip->v4lp->channel.mc_head->hdw;827 enum pvr2_config cfg = dip->config;828 char msg[80];829 unsigned int mcnt;830 831 /* Construct the unregistration message *before* we actually832 perform the unregistration step. By doing it this way we don't833 have to worry about potentially touching deleted resources. */834 mcnt = scnprintf(msg, sizeof(msg) - 1,835 "pvrusb2: unregistered device %s [%s]",836 video_device_node_name(&dip->devbase),837 pvr2_config_get_name(cfg));838 msg[mcnt] = 0;839 840 pvr2_hdw_v4l_store_minor_number(hdw,dip->minor_type,-1);841 842 /* Paranoia */843 dip->v4lp = NULL;844 dip->stream = NULL;845 846 /* Actual deallocation happens later when all internal references847 are gone. */848 video_unregister_device(&dip->devbase);849 850 pr_info("%s\n", msg);851 852}853 854 855static void pvr2_v4l2_dev_disassociate_parent(struct pvr2_v4l2_dev *dip)856{857 if (!dip) return;858 if (!dip->devbase.v4l2_dev->dev) return;859 dip->devbase.v4l2_dev->dev = NULL;860 device_move(&dip->devbase.dev, NULL, DPM_ORDER_NONE);861}862 863 864static void pvr2_v4l2_destroy_no_lock(struct pvr2_v4l2 *vp)865{866 if (vp->dev_video) {867 pvr2_v4l2_dev_destroy(vp->dev_video);868 vp->dev_video = NULL;869 }870 if (vp->dev_radio) {871 pvr2_v4l2_dev_destroy(vp->dev_radio);872 vp->dev_radio = NULL;873 }874 875 pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_v4l2 id=%p",vp);876 pvr2_channel_done(&vp->channel);877 kfree(vp);878}879 880 881static void pvr2_video_device_release(struct video_device *vdev)882{883 struct pvr2_v4l2_dev *dev;884 dev = container_of(vdev,struct pvr2_v4l2_dev,devbase);885 kfree(dev);886}887 888 889static void pvr2_v4l2_internal_check(struct pvr2_channel *chp)890{891 struct pvr2_v4l2 *vp;892 vp = container_of(chp,struct pvr2_v4l2,channel);893 if (!vp->channel.mc_head->disconnect_flag) return;894 pvr2_v4l2_dev_disassociate_parent(vp->dev_video);895 pvr2_v4l2_dev_disassociate_parent(vp->dev_radio);896 if (!list_empty(&vp->dev_video->devbase.fh_list) ||897 (vp->dev_radio &&898 !list_empty(&vp->dev_radio->devbase.fh_list))) {899 pvr2_trace(PVR2_TRACE_STRUCT,900 "pvr2_v4l2 internal_check exit-empty id=%p", vp);901 return;902 }903 pvr2_v4l2_destroy_no_lock(vp);904}905 906 907static int pvr2_v4l2_release(struct file *file)908{909 struct pvr2_v4l2_fh *fhp = file->private_data;910 struct pvr2_v4l2 *vp = fhp->pdi->v4lp;911 struct pvr2_hdw *hdw = fhp->channel.mc_head->hdw;912 913 pvr2_trace(PVR2_TRACE_OPEN_CLOSE,"pvr2_v4l2_release");914 915 if (fhp->rhp) {916 struct pvr2_stream *sp;917 pvr2_hdw_set_streaming(hdw,0);918 sp = pvr2_ioread_get_stream(fhp->rhp);919 if (sp) pvr2_stream_set_callback(sp,NULL,NULL);920 pvr2_ioread_destroy(fhp->rhp);921 fhp->rhp = NULL;922 }923 924 v4l2_fh_del(&fhp->fh);925 v4l2_fh_exit(&fhp->fh);926 file->private_data = NULL;927 928 pvr2_channel_done(&fhp->channel);929 pvr2_trace(PVR2_TRACE_STRUCT,930 "Destroying pvr_v4l2_fh id=%p",fhp);931 if (fhp->input_map) {932 kfree(fhp->input_map);933 fhp->input_map = NULL;934 }935 kfree(fhp);936 if (vp->channel.mc_head->disconnect_flag &&937 list_empty(&vp->dev_video->devbase.fh_list) &&938 (!vp->dev_radio ||939 list_empty(&vp->dev_radio->devbase.fh_list))) {940 pvr2_v4l2_destroy_no_lock(vp);941 }942 return 0;943}944 945 946static int pvr2_v4l2_open(struct file *file)947{948 struct pvr2_v4l2_dev *dip; /* Our own context pointer */949 struct pvr2_v4l2_fh *fhp;950 struct pvr2_v4l2 *vp;951 struct pvr2_hdw *hdw;952 unsigned int input_mask = 0;953 unsigned int input_cnt,idx;954 int ret = 0;955 956 dip = container_of(video_devdata(file),struct pvr2_v4l2_dev,devbase);957 958 vp = dip->v4lp;959 hdw = vp->channel.hdw;960 961 pvr2_trace(PVR2_TRACE_OPEN_CLOSE,"pvr2_v4l2_open");962 963 if (!pvr2_hdw_dev_ok(hdw)) {964 pvr2_trace(PVR2_TRACE_OPEN_CLOSE,965 "pvr2_v4l2_open: hardware not ready");966 return -EIO;967 }968 969 fhp = kzalloc(sizeof(*fhp),GFP_KERNEL);970 if (!fhp) {971 return -ENOMEM;972 }973 974 v4l2_fh_init(&fhp->fh, &dip->devbase);975 init_waitqueue_head(&fhp->wait_data);976 fhp->pdi = dip;977 978 pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr_v4l2_fh id=%p",fhp);979 pvr2_channel_init(&fhp->channel,vp->channel.mc_head);980 981 if (dip->v4l_type == VFL_TYPE_RADIO) {982 /* Opening device as a radio, legal input selection subset983 is just the radio. */984 input_mask = (1 << PVR2_CVAL_INPUT_RADIO);985 } else {986 /* Opening the main V4L device, legal input selection987 subset includes all analog inputs. */988 input_mask = ((1 << PVR2_CVAL_INPUT_RADIO) |989 (1 << PVR2_CVAL_INPUT_TV) |990 (1 << PVR2_CVAL_INPUT_COMPOSITE) |991 (1 << PVR2_CVAL_INPUT_SVIDEO));992 }993 ret = pvr2_channel_limit_inputs(&fhp->channel,input_mask);994 if (ret) {995 pvr2_channel_done(&fhp->channel);996 pvr2_trace(PVR2_TRACE_STRUCT,997 "Destroying pvr_v4l2_fh id=%p (input mask error)",998 fhp);999 v4l2_fh_exit(&fhp->fh);1000 kfree(fhp);1001 return ret;1002 }1003 1004 input_mask &= pvr2_hdw_get_input_available(hdw);1005 input_cnt = 0;1006 for (idx = 0; idx < (sizeof(input_mask) << 3); idx++) {1007 if (input_mask & (1UL << idx)) input_cnt++;1008 }1009 fhp->input_cnt = input_cnt;1010 fhp->input_map = kzalloc(input_cnt,GFP_KERNEL);1011 if (!fhp->input_map) {1012 pvr2_channel_done(&fhp->channel);1013 pvr2_trace(PVR2_TRACE_STRUCT,1014 "Destroying pvr_v4l2_fh id=%p (input map failure)",1015 fhp);1016 v4l2_fh_exit(&fhp->fh);1017 kfree(fhp);1018 return -ENOMEM;1019 }1020 input_cnt = 0;1021 for (idx = 0; idx < (sizeof(input_mask) << 3); idx++) {1022 if (!(input_mask & (1UL << idx))) continue;1023 fhp->input_map[input_cnt++] = idx;1024 }1025 1026 fhp->file = file;1027 file->private_data = fhp;1028 1029 fhp->fw_mode_flag = pvr2_hdw_cpufw_get_enabled(hdw);1030 v4l2_fh_add(&fhp->fh);1031 1032 return 0;1033}1034 1035 1036static void pvr2_v4l2_notify(void *ptr)1037{1038 struct pvr2_v4l2_fh *fhp = ptr;1039 1040 wake_up(&fhp->wait_data);1041}1042 1043static int pvr2_v4l2_iosetup(struct pvr2_v4l2_fh *fh)1044{1045 int ret;1046 struct pvr2_stream *sp;1047 struct pvr2_hdw *hdw;1048 if (fh->rhp) return 0;1049 1050 if (!fh->pdi->stream) {1051 /* No stream defined for this node. This means that we're1052 not currently allowed to stream from this node. */1053 return -EPERM;1054 }1055 1056 /* First read() attempt. Try to claim the stream and start1057 it... */1058 if ((ret = pvr2_channel_claim_stream(&fh->channel,1059 fh->pdi->stream)) != 0) {1060 /* Someone else must already have it */1061 return ret;1062 }1063 1064 fh->rhp = pvr2_channel_create_mpeg_stream(fh->pdi->stream);1065 if (!fh->rhp) {1066 pvr2_channel_claim_stream(&fh->channel,NULL);1067 return -ENOMEM;1068 }1069 1070 hdw = fh->channel.mc_head->hdw;1071 sp = fh->pdi->stream->stream;1072 pvr2_stream_set_callback(sp, pvr2_v4l2_notify, fh);1073 pvr2_hdw_set_stream_type(hdw,fh->pdi->config);1074 if ((ret = pvr2_hdw_set_streaming(hdw,!0)) < 0) return ret;1075 return pvr2_ioread_set_enabled(fh->rhp,!0);1076}1077 1078 1079static ssize_t pvr2_v4l2_read(struct file *file,1080 char __user *buff, size_t count, loff_t *ppos)1081{1082 struct pvr2_v4l2_fh *fh = file->private_data;1083 int ret;1084 1085 if (fh->fw_mode_flag) {1086 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;1087 char *tbuf;1088 int c1,c2;1089 int tcnt = 0;1090 unsigned int offs = *ppos;1091 1092 tbuf = kmalloc(PAGE_SIZE,GFP_KERNEL);1093 if (!tbuf) return -ENOMEM;1094 1095 while (count) {1096 c1 = count;1097 if (c1 > PAGE_SIZE) c1 = PAGE_SIZE;1098 c2 = pvr2_hdw_cpufw_get(hdw,offs,tbuf,c1);1099 if (c2 < 0) {1100 tcnt = c2;1101 break;1102 }1103 if (!c2) break;1104 if (copy_to_user(buff,tbuf,c2)) {1105 tcnt = -EFAULT;1106 break;1107 }1108 offs += c2;1109 tcnt += c2;1110 buff += c2;1111 count -= c2;1112 *ppos += c2;1113 }1114 kfree(tbuf);1115 return tcnt;1116 }1117 1118 if (!fh->rhp) {1119 ret = pvr2_v4l2_iosetup(fh);1120 if (ret) {1121 return ret;1122 }1123 }1124 1125 for (;;) {1126 ret = pvr2_ioread_read(fh->rhp,buff,count);1127 if (ret >= 0) break;1128 if (ret != -EAGAIN) break;1129 if (file->f_flags & O_NONBLOCK) break;1130 /* Doing blocking I/O. Wait here. */1131 ret = wait_event_interruptible(1132 fh->wait_data,1133 pvr2_ioread_avail(fh->rhp) >= 0);1134 if (ret < 0) break;1135 }1136 1137 return ret;1138}1139 1140 1141static __poll_t pvr2_v4l2_poll(struct file *file, poll_table *wait)1142{1143 __poll_t mask = 0;1144 struct pvr2_v4l2_fh *fh = file->private_data;1145 int ret;1146 1147 if (fh->fw_mode_flag) {1148 mask |= EPOLLIN | EPOLLRDNORM;1149 return mask;1150 }1151 1152 if (!fh->rhp) {1153 ret = pvr2_v4l2_iosetup(fh);1154 if (ret) return EPOLLERR;1155 }1156 1157 poll_wait(file,&fh->wait_data,wait);1158 1159 if (pvr2_ioread_avail(fh->rhp) >= 0) {1160 mask |= EPOLLIN | EPOLLRDNORM;1161 }1162 1163 return mask;1164}1165 1166 1167static const struct v4l2_file_operations vdev_fops = {1168 .owner = THIS_MODULE,1169 .open = pvr2_v4l2_open,1170 .release = pvr2_v4l2_release,1171 .read = pvr2_v4l2_read,1172 .unlocked_ioctl = video_ioctl2,1173 .poll = pvr2_v4l2_poll,1174};1175 1176 1177static const struct video_device vdev_template = {1178 .fops = &vdev_fops,1179};1180 1181 1182static void pvr2_v4l2_dev_init(struct pvr2_v4l2_dev *dip,1183 struct pvr2_v4l2 *vp,1184 int v4l_type)1185{1186 int mindevnum;1187 int unit_number;1188 struct pvr2_hdw *hdw;1189 int *nr_ptr = NULL;1190 u32 caps = V4L2_CAP_TUNER | V4L2_CAP_READWRITE;1191 1192 dip->v4lp = vp;1193 1194 hdw = vp->channel.mc_head->hdw;1195 dip->v4l_type = v4l_type;1196 switch (v4l_type) {1197 case VFL_TYPE_VIDEO:1198 dip->stream = &vp->channel.mc_head->video_stream;1199 dip->config = pvr2_config_mpeg;1200 dip->minor_type = pvr2_v4l_type_video;1201 nr_ptr = video_nr;1202 caps |= V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO;1203 break;1204 case VFL_TYPE_VBI:1205 dip->config = pvr2_config_vbi;1206 dip->minor_type = pvr2_v4l_type_vbi;1207 nr_ptr = vbi_nr;1208 caps |= V4L2_CAP_VBI_CAPTURE;1209 break;1210 case VFL_TYPE_RADIO:1211 dip->stream = &vp->channel.mc_head->video_stream;1212 dip->config = pvr2_config_mpeg;1213 dip->minor_type = pvr2_v4l_type_radio;1214 nr_ptr = radio_nr;1215 caps |= V4L2_CAP_RADIO;1216 break;1217 default:1218 /* Bail out (this should be impossible) */1219 pr_err(KBUILD_MODNAME ": Failed to set up pvrusb2 v4l dev due to unrecognized config\n");1220 return;1221 }1222 1223 dip->devbase = vdev_template;1224 dip->devbase.release = pvr2_video_device_release;1225 dip->devbase.ioctl_ops = &pvr2_ioctl_ops;1226 dip->devbase.device_caps = caps;1227 {1228 int val;1229 pvr2_ctrl_get_value(1230 pvr2_hdw_get_ctrl_by_id(hdw,1231 PVR2_CID_STDAVAIL), &val);1232 dip->devbase.tvnorms = (v4l2_std_id)val;1233 }1234 1235 mindevnum = -1;1236 unit_number = pvr2_hdw_get_unit_number(hdw);1237 if (nr_ptr && (unit_number >= 0) && (unit_number < PVR_NUM)) {1238 mindevnum = nr_ptr[unit_number];1239 }1240 pvr2_hdw_set_v4l2_dev(hdw, &dip->devbase);1241 if ((video_register_device(&dip->devbase,1242 dip->v4l_type, mindevnum) < 0) &&1243 (video_register_device(&dip->devbase,1244 dip->v4l_type, -1) < 0)) {1245 pr_err(KBUILD_MODNAME1246 ": Failed to register pvrusb2 v4l device\n");1247 }1248 1249 pr_info("pvrusb2: registered device %s [%s]\n",1250 video_device_node_name(&dip->devbase),1251 pvr2_config_get_name(dip->config));1252 1253 pvr2_hdw_v4l_store_minor_number(hdw,1254 dip->minor_type,dip->devbase.minor);1255}1256 1257 1258struct pvr2_v4l2 *pvr2_v4l2_create(struct pvr2_context *mnp)1259{1260 struct pvr2_v4l2 *vp;1261 1262 vp = kzalloc(sizeof(*vp),GFP_KERNEL);1263 if (!vp) return vp;1264 pvr2_channel_init(&vp->channel,mnp);1265 pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_v4l2 id=%p",vp);1266 1267 vp->channel.check_func = pvr2_v4l2_internal_check;1268 1269 /* register streams */1270 vp->dev_video = kzalloc(sizeof(*vp->dev_video),GFP_KERNEL);1271 if (!vp->dev_video) goto fail;1272 pvr2_v4l2_dev_init(vp->dev_video,vp,VFL_TYPE_VIDEO);1273 if (pvr2_hdw_get_input_available(vp->channel.mc_head->hdw) &1274 (1 << PVR2_CVAL_INPUT_RADIO)) {1275 vp->dev_radio = kzalloc(sizeof(*vp->dev_radio),GFP_KERNEL);1276 if (!vp->dev_radio) goto fail;1277 pvr2_v4l2_dev_init(vp->dev_radio,vp,VFL_TYPE_RADIO);1278 }1279 1280 return vp;1281 fail:1282 pvr2_trace(PVR2_TRACE_STRUCT,"Failure creating pvr2_v4l2 id=%p",vp);1283 pvr2_v4l2_destroy_no_lock(vp);1284 return NULL;1285}1286