/* * * $Id$ * * Copyright (C) 2005 Mike Isely * Copyright (C) 2004 Aurelien Alleaume * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include #include #include "pvrusb2-context.h" #include "pvrusb2-hdw.h" #include "pvrusb2.h" #include "pvrusb2-debug.h" #include "pvrusb2-v4l2.h" #include "pvrusb2-ioread.h" #include #include #include struct pvr2_v4l2_dev; struct pvr2_v4l2_fh; struct pvr2_v4l2; struct pvr2_v4l2_dev { struct video_device devbase; /* MUST be first! */ struct pvr2_v4l2 *v4lp; struct pvr2_context_stream *stream; /* Information about this device: */ enum pvr2_config config; /* Expected stream format */ int v4l_type; /* V4L defined type for this device node */ enum pvr2_v4l_type minor_type; /* pvr2-understood minor device type */ }; struct pvr2_v4l2_fh { struct pvr2_channel channel; struct pvr2_v4l2_dev *dev_info; enum v4l2_priority prio; struct pvr2_ioread *rhp; struct file *file; struct pvr2_v4l2 *vhead; struct pvr2_v4l2_fh *vnext; struct pvr2_v4l2_fh *vprev; wait_queue_head_t wait_data; int fw_mode_flag; int prev_input_val; }; struct pvr2_v4l2 { struct pvr2_channel channel; struct pvr2_v4l2_fh *vfirst; struct pvr2_v4l2_fh *vlast; struct v4l2_prio_state prio; /* streams - Note that these must be separately, individually, * allocated pointers. This is because the v4l core is going to * manage their deletion - separately, individually... */ struct pvr2_v4l2_dev *dev_video; struct pvr2_v4l2_dev *dev_radio; }; static int video_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1}; module_param_array(video_nr, int, NULL, 0444); MODULE_PARM_DESC(video_nr, "Offset for device's video dev minor"); static int radio_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1}; module_param_array(radio_nr, int, NULL, 0444); MODULE_PARM_DESC(radio_nr, "Offset for device's radio dev minor"); static int vbi_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1}; module_param_array(vbi_nr, int, NULL, 0444); MODULE_PARM_DESC(vbi_nr, "Offset for device's vbi dev minor"); static struct v4l2_capability pvr_capability ={ .driver = "pvrusb2", .card = "Hauppauge WinTV pvr-usb2", .bus_info = "usb", .version = KERNEL_VERSION(0,8,0), .capabilities = (V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VBI_CAPTURE | V4L2_CAP_TUNER | V4L2_CAP_AUDIO | V4L2_CAP_RADIO | V4L2_CAP_READWRITE), .reserved = {0,0,0,0} }; static struct v4l2_tuner pvr_v4l2_tuners[]= { { .index = 0, .name = "TV Tuner", .type = V4L2_TUNER_ANALOG_TV, .capability = (V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2), .rangelow = 0, .rangehigh = 0, .rxsubchans = V4L2_TUNER_SUB_STEREO, .audmode = V4L2_TUNER_MODE_STEREO, .signal = 0, .afc = 0, .reserved = {0,0,0,0} } }; static struct v4l2_fmtdesc pvr_fmtdesc [] = { { .index = 0, .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, .flags = V4L2_FMT_FLAG_COMPRESSED, .description = "MPEG1/2", // This should really be V4L2_PIX_FMT_MPEG, but xawtv // breaks when I do that. .pixelformat = 0, // V4L2_PIX_FMT_MPEG, .reserved = { 0, 0, 0, 0 } } }; #define PVR_FORMAT_PIX 0 #define PVR_FORMAT_VBI 1 static struct v4l2_format pvr_format [] = { [PVR_FORMAT_PIX] = { .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, .fmt = { .pix = { .width = 720, .height = 576, // This should really be V4L2_PIX_FMT_MPEG, // but xawtv breaks when I do that. .pixelformat = 0, // V4L2_PIX_FMT_MPEG, .field = V4L2_FIELD_INTERLACED, .bytesperline = 0, // doesn't make sense // here //FIXME : Don't know what to put here... .sizeimage = (32*1024), .colorspace = 0, // doesn't make sense here .priv = 0 } } }, [PVR_FORMAT_VBI] = { .type = V4L2_BUF_TYPE_VBI_CAPTURE, .fmt = { .vbi = { .sampling_rate = 27000000, .offset = 248, .samples_per_line = 1443, .sample_format = V4L2_PIX_FMT_GREY, .start = { 0, 0 }, .count = { 0, 0 }, .flags = 0, .reserved = { 0, 0 } } } } }; static const char *get_v4l_name(int v4l_type) { switch (v4l_type) { case VFL_TYPE_GRABBER: return "video"; case VFL_TYPE_RADIO: return "radio"; case VFL_TYPE_VBI: return "vbi"; default: return "?"; } } /* * pvr_ioctl() * * This is part of Video 4 Linux API. The procedure handles ioctl() calls. * */ static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file, unsigned int cmd, void *arg) { struct pvr2_v4l2_fh *fh = file->private_data; struct pvr2_v4l2 *vp = fh->vhead; struct pvr2_v4l2_dev *dev_info = fh->dev_info; struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; int ret = -EINVAL; if (pvrusb2_debug & PVR2_TRACE_V4LIOCTL) { v4l_print_ioctl(pvr2_hdw_get_driver_name(hdw),cmd); } if (!pvr2_hdw_dev_ok(hdw)) { pvr2_trace(PVR2_TRACE_ERROR_LEGS, "ioctl failed - bad or no context"); return -EFAULT; } /* check priority */ switch (cmd) { case VIDIOC_S_CTRL: case VIDIOC_S_STD: case VIDIOC_S_INPUT: case VIDIOC_S_TUNER: case VIDIOC_S_FREQUENCY: ret = v4l2_prio_check(&vp->prio, &fh->prio); if (ret) return ret; } switch (cmd) { case VIDIOC_QUERYCAP: { struct v4l2_capability *cap = arg; memcpy(cap, &pvr_capability, sizeof(struct v4l2_capability)); ret = 0; break; } case VIDIOC_G_PRIORITY: { enum v4l2_priority *p = arg; *p = v4l2_prio_max(&vp->prio); ret = 0; break; } case VIDIOC_S_PRIORITY: { enum v4l2_priority *prio = arg; ret = v4l2_prio_change(&vp->prio, &fh->prio, *prio); break; } case VIDIOC_ENUMSTD: { struct v4l2_standard *vs = (struct v4l2_standard *)arg; int idx = vs->index; ret = pvr2_hdw_get_stdenum_value(hdw,vs,idx+1); break; } case VIDIOC_G_STD: { int val = 0; ret = pvr2_ctrl_get_value( pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_STDCUR),&val); *(v4l2_std_id *)arg = val; break; } case VIDIOC_S_STD: { ret = pvr2_ctrl_set_value( pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_STDCUR), *(v4l2_std_id *)arg); break; } case VIDIOC_ENUMINPUT: { struct pvr2_ctrl *cptr; struct v4l2_input *vi = (struct v4l2_input *)arg; struct v4l2_input tmp; unsigned int cnt; cptr = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT); memset(&tmp,0,sizeof(tmp)); tmp.index = vi->index; ret = 0; switch (vi->index) { case PVR2_CVAL_INPUT_TV: case PVR2_CVAL_INPUT_RADIO: tmp.type = V4L2_INPUT_TYPE_TUNER; break; case PVR2_CVAL_INPUT_SVIDEO: case PVR2_CVAL_INPUT_COMPOSITE: tmp.type = V4L2_INPUT_TYPE_CAMERA; break; default: ret = -EINVAL; break; } if (ret < 0) break; cnt = 0; pvr2_ctrl_get_valname(cptr,vi->index, tmp.name,sizeof(tmp.name)-1,&cnt); tmp.name[cnt] = 0; /* Don't bother with audioset, since this driver currently always switches the audio whenever the video is switched. */ /* Handling std is a tougher problem. It doesn't make sense in cases where a device might be multi-standard. We could just copy out the current value for the standard, but it can change over time. For now just leave it zero. */ memcpy(vi, &tmp, sizeof(tmp)); ret = 0; break; } case VIDIOC_G_INPUT: { struct pvr2_ctrl *cptr; struct v4l2_input *vi = (struct v4l2_input *)arg; int val; cptr = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT); val = 0; ret = pvr2_ctrl_get_value(cptr,&val); vi->index = val; break; } case VIDIOC_S_INPUT: { struct v4l2_input *vi = (struct v4l2_input *)arg; ret = pvr2_ctrl_set_value( pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT), vi->index); break; } case VIDIOC_ENUMAUDIO: { ret = -EINVAL; break; } case VIDIOC_G_AUDIO: { ret = -EINVAL; break; } case VIDIOC_S_AUDIO: { ret = -EINVAL; break; } case VIDIOC_G_TUNER: { struct v4l2_tuner *vt = (struct v4l2_tuner *)arg; unsigned int status_mask; int val; if (vt->index !=0) break; status_mask = pvr2_hdw_get_signal_status(hdw); memcpy(vt, &pvr_v4l2_tuners[vt->index], sizeof(struct v4l2_tuner)); vt->signal = 0; if (status_mask & PVR2_SIGNAL_OK) { if (status_mask & PVR2_SIGNAL_STEREO) { vt->rxsubchans = V4L2_TUNER_SUB_STEREO; } else { vt->rxsubchans = V4L2_TUNER_SUB_MONO; } if (status_mask & PVR2_SIGNAL_SAP) { vt->rxsubchans |= (V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2); } vt->signal = 65535; } val = 0; ret = pvr2_ctrl_get_value( pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_AUDIOMODE), &val); vt->audmode = val; break; } case VIDIOC_S_TUNER: { struct v4l2_tuner *vt=(struct v4l2_tuner *)arg; if (vt->index != 0) break; ret = pvr2_ctrl_set_value( pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_AUDIOMODE), vt->audmode); } case VIDIOC_S_FREQUENCY: { const struct v4l2_frequency *vf = (struct v4l2_frequency *)arg; unsigned long fv; fv = vf->frequency; if (vf->type == V4L2_TUNER_RADIO) { fv = (fv * 125) / 2; } else { fv = fv * 62500; } ret = pvr2_ctrl_set_value( pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_FREQUENCY),fv); break; } case VIDIOC_G_FREQUENCY: { struct v4l2_frequency *vf = (struct v4l2_frequency *)arg; int val = 0; int cur_input = PVR2_CVAL_INPUT_TV; ret = pvr2_ctrl_get_value( pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_FREQUENCY), &val); if (ret != 0) break; pvr2_ctrl_get_value( pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT), &cur_input); if (cur_input == PVR2_CVAL_INPUT_RADIO) { val = (val * 2) / 125; vf->frequency = val; vf->type = V4L2_TUNER_RADIO; } else { val /= 62500; vf->frequency = val; vf->type = V4L2_TUNER_ANALOG_TV; } break; } case VIDIOC_ENUM_FMT: { struct v4l2_fmtdesc *fd = (struct v4l2_fmtdesc *)arg; /* Only one format is supported : mpeg.*/ if (fd->index != 0) break; memcpy(fd, pvr_fmtdesc, sizeof(struct v4l2_fmtdesc)); ret = 0; break; } case VIDIOC_G_FMT: { struct v4l2_format *vf = (struct v4l2_format *)arg; int val; switch(vf->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: memcpy(vf, &pvr_format[PVR_FORMAT_PIX], sizeof(struct v4l2_format)); val = 0; pvr2_ctrl_get_value( pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_HRES), &val); vf->fmt.pix.width = val; val = 0; pvr2_ctrl_get_value( pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_VRES), &val); vf->fmt.pix.height = val; ret = 0; break; case V4L2_BUF_TYPE_VBI_CAPTURE: // ????? Still need to figure out to do VBI correctly ret = -EINVAL; break; default: ret = -EINVAL; break; } break; } case VIDIOC_TRY_FMT: case VIDIOC_S_FMT: { struct v4l2_format *vf = (struct v4l2_format *)arg; ret = 0; switch(vf->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: { int lmin,lmax; struct pvr2_ctrl *hcp,*vcp; int h = vf->fmt.pix.height; int w = vf->fmt.pix.width; hcp = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_HRES); vcp = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_VRES); lmin = pvr2_ctrl_get_min(hcp); lmax = pvr2_ctrl_get_max(hcp); if (w < lmin) { w = lmin; } else if (w > lmax) { w = lmax; } lmin = pvr2_ctrl_get_min(vcp); lmax = pvr2_ctrl_get_max(vcp); if (h < lmin) { h = lmin; } else if (h > lmax) { h = lmax; } memcpy(vf, &pvr_format[PVR_FORMAT_PIX], sizeof(struct v4l2_format)); vf->fmt.pix.width = w; vf->fmt.pix.height = h; if (cmd == VIDIOC_S_FMT) { pvr2_ctrl_set_value(hcp,vf->fmt.pix.width); pvr2_ctrl_set_value(vcp,vf->fmt.pix.height); } } break; case V4L2_BUF_TYPE_VBI_CAPTURE: // ????? Still need to figure out to do VBI correctly ret = -EINVAL; break; default: ret = -EINVAL; break; } break; } case VIDIOC_STREAMON: { if (!fh->dev_info->stream) { /* No stream defined for this node. This means that we're not currently allowed to stream from this node. */ ret = -EPERM; break; } ret = pvr2_hdw_set_stream_type(hdw,dev_info->config); if (ret < 0) return ret; ret = pvr2_hdw_set_streaming(hdw,!0); break; } case VIDIOC_STREAMOFF: { if (!fh->dev_info->stream) { /* No stream defined for this node. This means that we're not currently allowed to stream from this node. */ ret = -EPERM; break; } ret = pvr2_hdw_set_streaming(hdw,0); break; } case VIDIOC_QUERYCTRL: { struct pvr2_ctrl *cptr; struct v4l2_queryctrl *vc = (struct v4l2_queryctrl *)arg; ret = 0; if (vc->id & V4L2_CTRL_FLAG_NEXT_CTRL) { cptr = pvr2_hdw_get_ctrl_nextv4l( hdw,(vc->id & ~V4L2_CTRL_FLAG_NEXT_CTRL)); if (cptr) vc->id = pvr2_ctrl_get_v4lid(cptr); } else { cptr = pvr2_hdw_get_ctrl_v4l(hdw,vc->id); } if (!cptr) { pvr2_trace(PVR2_TRACE_V4LIOCTL, "QUERYCTRL id=0x%x not implemented here", vc->id); ret = -EINVAL; break; } pvr2_trace(PVR2_TRACE_V4LIOCTL, "QUERYCTRL id=0x%x mapping name=%s (%s)", vc->id,pvr2_ctrl_get_name(cptr), pvr2_ctrl_get_desc(cptr)); strlcpy(vc->name,pvr2_ctrl_get_desc(cptr),sizeof(vc->name)); vc->flags = pvr2_ctrl_get_v4lflags(cptr); vc->default_value = pvr2_ctrl_get_def(cptr); switch (pvr2_ctrl_get_type(cptr)) { case pvr2_ctl_enum: vc->type = V4L2_CTRL_TYPE_MENU; vc->minimum = 0; vc->maximum = pvr2_ctrl_get_cnt(cptr) - 1; vc->step = 1; break; case pvr2_ctl_bool: vc->type = V4L2_CTRL_TYPE_BOOLEAN; vc->minimum = 0; vc->maximum = 1; vc->step = 1; break; case pvr2_ctl_int: vc->type = V4L2_CTRL_TYPE_INTEGER; vc->minimum = pvr2_ctrl_get_min(cptr); vc->maximum = pvr2_ctrl_get_max(cptr); vc->step = 1; break; default: pvr2_trace(PVR2_TRACE_V4LIOCTL, "QUERYCTRL id=0x%x name=%s not mappable", vc->id,pvr2_ctrl_get_name(cptr)); ret = -EINVAL; break; } break; } case VIDIOC_QUERYMENU: { struct v4l2_querymenu *vm = (struct v4l2_querymenu *)arg; unsigned int cnt = 0; ret = pvr2_ctrl_get_valname(pvr2_hdw_get_ctrl_v4l(hdw,vm->id), vm->index, vm->name,sizeof(vm->name)-1, &cnt); vm->name[cnt] = 0; break; } case VIDIOC_G_CTRL: { struct v4l2_control *vc = (struct v4l2_control *)arg; int val = 0; ret = pvr2_ctrl_get_value(pvr2_hdw_get_ctrl_v4l(hdw,vc->id), &val); vc->value = val; break; } case VIDIOC_S_CTRL: { struct v4l2_control *vc = (struct v4l2_control *)arg; ret = pvr2_ctrl_set_value(pvr2_hdw_get_ctrl_v4l(hdw,vc->id), vc->value); break; } case VIDIOC_G_EXT_CTRLS: { struct v4l2_ext_controls *ctls = (struct v4l2_ext_controls *)arg; struct v4l2_ext_control *ctrl; unsigned int idx; int val; for (idx = 0; idx < ctls->count; idx++) { ctrl = ctls->controls + idx; ret = pvr2_ctrl_get_value( pvr2_hdw_get_ctrl_v4l(hdw,ctrl->id),&val); if (ret) { ctls->error_idx = idx; break; } /* Ensure that if read as a 64 bit value, the user will still get a hopefully sane value */ ctrl->value64 = 0; ctrl->value = val; } break; } case VIDIOC_S_EXT_CTRLS: { struct v4l2_ext_controls *ctls = (struct v4l2_ext_controls *)arg; struct v4l2_ext_control *ctrl; unsigned int idx; for (idx = 0; idx < ctls->count; idx++) { ctrl = ctls->controls + idx; ret = pvr2_ctrl_set_value( pvr2_hdw_get_ctrl_v4l(hdw,ctrl->id), ctrl->value); if (ret) { ctls->error_idx = idx; break; } } break; } case VIDIOC_TRY_EXT_CTRLS: { struct v4l2_ext_controls *ctls = (struct v4l2_ext_controls *)arg; struct v4l2_ext_control *ctrl; struct pvr2_ctrl *pctl; unsigned int idx; /* For the moment just validate that the requested control actually exists. */ for (idx = 0; idx < ctls->count; idx++) { ctrl = ctls->controls + idx; pctl = pvr2_hdw_get_ctrl_v4l(hdw,ctrl->id); if (!pctl) { ret = -EINVAL; ctls->error_idx = idx; break; } } break; } case VIDIOC_LOG_STATUS: { pvr2_hdw_trigger_module_log(hdw); ret = 0; break; } #ifdef CONFIG_VIDEO_ADV_DEBUG case VIDIOC_INT_G_REGISTER: case VIDIOC_INT_S_REGISTER: { u32 val; struct v4l2_register *req = (struct v4l2_register *)arg; if (cmd == VIDIOC_INT_S_REGISTER) val = req->val; ret = pvr2_hdw_register_access( hdw,req->i2c_id,req->reg, cmd == VIDIOC_INT_S_REGISTER,&val); if (cmd == VIDIOC_INT_G_REGISTER) req->val = val; break; } #endif default : ret = v4l_compat_translate_ioctl(inode,file,cmd, arg,pvr2_v4l2_do_ioctl); } pvr2_hdw_commit_ctl(hdw); if (ret < 0) { if (pvrusb2_debug & PVR2_TRACE_V4LIOCTL) { pvr2_trace(PVR2_TRACE_V4LIOCTL, "pvr2_v4l2_do_ioctl failure, ret=%d",ret); } else { if (pvrusb2_debug & PVR2_TRACE_V4LIOCTL) { pvr2_trace(PVR2_TRACE_V4LIOCTL, "pvr2_v4l2_do_ioctl failure, ret=%d" " command was:",ret); v4l_print_ioctl(pvr2_hdw_get_driver_name(hdw), cmd); } } } else { pvr2_trace(PVR2_TRACE_V4LIOCTL, "pvr2_v4l2_do_ioctl complete, ret=%d (0x%x)", ret,ret); } return ret; } static void pvr2_v4l2_dev_destroy(struct pvr2_v4l2_dev *dip) { int minor_id = dip->devbase.minor; struct pvr2_hdw *hdw = dip->v4lp->channel.mc_head->hdw; enum pvr2_config cfg = dip->config; int v4l_type = dip->v4l_type; pvr2_hdw_v4l_store_minor_number(hdw,dip->minor_type,-1); /* Paranoia */ dip->v4lp = NULL; dip->stream = NULL; /* Actual deallocation happens later when all internal references are gone. */ video_unregister_device(&dip->devbase); printk(KERN_INFO "pvrusb2: unregistered device %s%u [%s]\n", get_v4l_name(v4l_type),minor_id & 0x1f, pvr2_config_get_name(cfg)); } static void pvr2_v4l2_destroy_no_lock(struct pvr2_v4l2 *vp) { if (vp->dev_video) { pvr2_v4l2_dev_destroy(vp->dev_video); vp->dev_video = 0; } if (vp->dev_radio) { pvr2_v4l2_dev_destroy(vp->dev_radio); vp->dev_radio = 0; } pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_v4l2 id=%p",vp); pvr2_channel_done(&vp->channel); kfree(vp); } static void pvr2_video_device_release(struct video_device *vdev) { struct pvr2_v4l2_dev *dev; dev = container_of(vdev,struct pvr2_v4l2_dev,devbase); kfree(dev); } static void pvr2_v4l2_internal_check(struct pvr2_channel *chp) { struct pvr2_v4l2 *vp; vp = container_of(chp,struct pvr2_v4l2,channel); if (!vp->channel.mc_head->disconnect_flag) return; if (vp->vfirst) return; pvr2_v4l2_destroy_no_lock(vp); } static int pvr2_v4l2_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { /* Temporary hack : use ivtv api until a v4l2 one is available. */ #define IVTV_IOC_G_CODEC 0xFFEE7703 #define IVTV_IOC_S_CODEC 0xFFEE7704 if (cmd == IVTV_IOC_G_CODEC || cmd == IVTV_IOC_S_CODEC) return 0; return video_usercopy(inode, file, cmd, arg, pvr2_v4l2_do_ioctl); } static int pvr2_v4l2_release(struct inode *inode, struct file *file) { struct pvr2_v4l2_fh *fhp = file->private_data; struct pvr2_v4l2 *vp = fhp->vhead; struct pvr2_context *mp = fhp->vhead->channel.mc_head; struct pvr2_hdw *hdw = fhp->channel.mc_head->hdw; pvr2_trace(PVR2_TRACE_OPEN_CLOSE,"pvr2_v4l2_release"); if (fhp->rhp) { struct pvr2_stream *sp; pvr2_hdw_set_streaming(hdw,0); sp = pvr2_ioread_get_stream(fhp->rhp); if (sp) pvr2_stream_set_callback(sp,NULL,NULL); pvr2_ioread_destroy(fhp->rhp); fhp->rhp = NULL; } v4l2_prio_close(&vp->prio, &fhp->prio); file->private_data = NULL; pvr2_context_enter(mp); do { /* Restore the previous input selection, if it makes sense to do so. */ if (fhp->dev_info->v4l_type == VFL_TYPE_RADIO) { struct pvr2_ctrl *cp; int pval; cp = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT); pvr2_ctrl_get_value(cp,&pval); /* Only restore if we're still selecting the radio */ if (pval == PVR2_CVAL_INPUT_RADIO) { pvr2_ctrl_set_value(cp,fhp->prev_input_val); pvr2_hdw_commit_ctl(hdw); } } if (fhp->vnext) { fhp->vnext->vprev = fhp->vprev; } else { vp->vlast = fhp->vprev; } if (fhp->vprev) { fhp->vprev->vnext = fhp->vnext; } else { vp->vfirst = fhp->vnext; } fhp->vnext = NULL; fhp->vprev = NULL; fhp->vhead = NULL; pvr2_channel_done(&fhp->channel); pvr2_trace(PVR2_TRACE_STRUCT, "Destroying pvr_v4l2_fh id=%p",fhp); kfree(fhp); if (vp->channel.mc_head->disconnect_flag && !vp->vfirst) { pvr2_v4l2_destroy_no_lock(vp); } } while (0); pvr2_context_exit(mp); return 0; } static int pvr2_v4l2_open(struct inode *inode, struct file *file) { struct pvr2_v4l2_dev *dip; /* Our own context pointer */ struct pvr2_v4l2_fh *fhp; struct pvr2_v4l2 *vp; struct pvr2_hdw *hdw; dip = container_of(video_devdata(file),struct pvr2_v4l2_dev,devbase); vp = dip->v4lp; hdw = vp->channel.hdw; pvr2_trace(PVR2_TRACE_OPEN_CLOSE,"pvr2_v4l2_open"); if (!pvr2_hdw_dev_ok(hdw)) { pvr2_trace(PVR2_TRACE_OPEN_CLOSE, "pvr2_v4l2_open: hardware not ready"); return -EIO; } fhp = kzalloc(sizeof(*fhp),GFP_KERNEL); if (!fhp) { return -ENOMEM; } init_waitqueue_head(&fhp->wait_data); fhp->dev_info = dip; pvr2_context_enter(vp->channel.mc_head); do { pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr_v4l2_fh id=%p",fhp); pvr2_channel_init(&fhp->channel,vp->channel.mc_head); fhp->vnext = NULL; fhp->vprev = vp->vlast; if (vp->vlast) { vp->vlast->vnext = fhp; } else { vp->vfirst = fhp; } vp->vlast = fhp; fhp->vhead = vp; /* Opening the /dev/radioX device implies a mode switch. So execute that here. Note that you can get the IDENTICAL effect merely by opening the normal video device and setting the input appropriately. */ if (dip->v4l_type == VFL_TYPE_RADIO) { struct pvr2_ctrl *cp; cp = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT); pvr2_ctrl_get_value(cp,&fhp->prev_input_val); pvr2_ctrl_set_value(cp,PVR2_CVAL_INPUT_RADIO); pvr2_hdw_commit_ctl(hdw); } } while (0); pvr2_context_exit(vp->channel.mc_head); fhp->file = file; file->private_data = fhp; v4l2_prio_open(&vp->prio,&fhp->prio); fhp->fw_mode_flag = pvr2_hdw_cpufw_get_enabled(hdw); return 0; } static void pvr2_v4l2_notify(struct pvr2_v4l2_fh *fhp) { wake_up(&fhp->wait_data); } static int pvr2_v4l2_iosetup(struct pvr2_v4l2_fh *fh) { int ret; struct pvr2_stream *sp; struct pvr2_hdw *hdw; if (fh->rhp) return 0; if (!fh->dev_info->stream) { /* No stream defined for this node. This means that we're not currently allowed to stream from this node. */ return -EPERM; } /* First read() attempt. Try to claim the stream and start it... */ if ((ret = pvr2_channel_claim_stream(&fh->channel, fh->dev_info->stream)) != 0) { /* Someone else must already have it */ return ret; } fh->rhp = pvr2_channel_create_mpeg_stream(fh->dev_info->stream); if (!fh->rhp) { pvr2_channel_claim_stream(&fh->channel,NULL); return -ENOMEM; } hdw = fh->channel.mc_head->hdw; sp = fh->dev_info->stream->stream; pvr2_stream_set_callback(sp,(pvr2_stream_callback)pvr2_v4l2_notify,fh); pvr2_hdw_set_stream_type(hdw,fh->dev_info->config); pvr2_hdw_set_streaming(hdw,!0); ret = pvr2_ioread_set_enabled(fh->rhp,!0); return ret; } static ssize_t pvr2_v4l2_read(struct file *file, char __user *buff, size_t count, loff_t *ppos) { struct pvr2_v4l2_fh *fh = file->private_data; int ret; if (fh->fw_mode_flag) { struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; char *tbuf; int c1,c2; int tcnt = 0; unsigned int offs = *ppos; tbuf = kmalloc(PAGE_SIZE,GFP_KERNEL); if (!tbuf) return -ENOMEM; while (count) { c1 = count; if (c1 > PAGE_SIZE) c1 = PAGE_SIZE; c2 = pvr2_hdw_cpufw_get(hdw,offs,tbuf,c1); if (c2 < 0) { tcnt = c2; break; } if (!c2) break; if (copy_to_user(buff,tbuf,c2)) { tcnt = -EFAULT; break; } offs += c2; tcnt += c2; buff += c2; count -= c2; *ppos += c2; } kfree(tbuf); return tcnt; } if (!fh->rhp) { ret = pvr2_v4l2_iosetup(fh); if (ret) { return ret; } } for (;;) { ret = pvr2_ioread_read(fh->rhp,buff,count); if (ret >= 0) break; if (ret != -EAGAIN) break; if (file->f_flags & O_NONBLOCK) break; /* Doing blocking I/O. Wait here. */ ret = wait_event_interruptible( fh->wait_data, pvr2_ioread_avail(fh->rhp) >= 0); if (ret < 0) break; } return ret; } static unsigned int pvr2_v4l2_poll(struct file *file, poll_table *wait) { unsigned int mask = 0; struct pvr2_v4l2_fh *fh = file->private_data; int ret; if (fh->fw_mode_flag) { mask |= POLLIN | POLLRDNORM; return mask; } if (!fh->rhp) { ret = pvr2_v4l2_iosetup(fh); if (ret) return POLLERR; } poll_wait(file,&fh->wait_data,wait); if (pvr2_ioread_avail(fh->rhp) >= 0) { mask |= POLLIN | POLLRDNORM; } return mask; } static const struct file_operations vdev_fops = { .owner = THIS_MODULE, .open = pvr2_v4l2_open, .release = pvr2_v4l2_release, .read = pvr2_v4l2_read, .ioctl = pvr2_v4l2_ioctl, .llseek = no_llseek, .poll = pvr2_v4l2_poll, }; #define VID_HARDWARE_PVRUSB2 38 /* FIXME : need a good value */ static struct video_device vdev_template = { .owner = THIS_MODULE, .type = VID_TYPE_CAPTURE | VID_TYPE_TUNER, .type2 = (V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VBI_CAPTURE | V4L2_CAP_TUNER | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE), .hardware = VID_HARDWARE_PVRUSB2, .fops = &vdev_fops, }; static void pvr2_v4l2_dev_init(struct pvr2_v4l2_dev *dip, struct pvr2_v4l2 *vp, int v4l_type) { int mindevnum; int unit_number; int *nr_ptr = 0; dip->v4lp = vp; dip->v4l_type = v4l_type; switch (v4l_type) { case VFL_TYPE_GRABBER: dip->stream = &vp->channel.mc_head->video_stream; dip->config = pvr2_config_mpeg; dip->minor_type = pvr2_v4l_type_video; nr_ptr = video_nr; if (!dip->stream) { err("Failed to set up pvrusb2 v4l video dev" " due to missing stream instance"); return; } break; case VFL_TYPE_VBI: dip->config = pvr2_config_vbi; dip->minor_type = pvr2_v4l_type_vbi; nr_ptr = vbi_nr; break; case VFL_TYPE_RADIO: dip->config = pvr2_config_pcm; dip->minor_type = pvr2_v4l_type_radio; nr_ptr = radio_nr; break; default: /* Bail out (this should be impossible) */ err("Failed to set up pvrusb2 v4l dev" " due to unrecognized config"); return; } memcpy(&dip->devbase,&vdev_template,sizeof(vdev_template)); dip->devbase.release = pvr2_video_device_release; mindevnum = -1; unit_number = pvr2_hdw_get_unit_number(vp->channel.mc_head->hdw); if (nr_ptr && (unit_number >= 0) && (unit_number < PVR_NUM)) { mindevnum = nr_ptr[unit_number]; } if ((video_register_device(&dip->devbase, dip->v4l_type, mindevnum) < 0) && (video_register_device(&dip->devbase, dip->v4l_type, -1) < 0)) { err("Failed to register pvrusb2 v4l device"); } printk(KERN_INFO "pvrusb2: registered device %s%u [%s]\n", get_v4l_name(dip->v4l_type),dip->devbase.minor & 0x1f, pvr2_config_get_name(dip->config)); pvr2_hdw_v4l_store_minor_number(vp->channel.mc_head->hdw, dip->minor_type,dip->devbase.minor); } struct pvr2_v4l2 *pvr2_v4l2_create(struct pvr2_context *mnp) { struct pvr2_v4l2 *vp; vp = kzalloc(sizeof(*vp),GFP_KERNEL); if (!vp) return vp; vp->dev_video = kzalloc(sizeof(*vp->dev_video),GFP_KERNEL); vp->dev_radio = kzalloc(sizeof(*vp->dev_radio),GFP_KERNEL); if (!(vp->dev_video && vp->dev_radio)) { kfree(vp->dev_video); kfree(vp->dev_radio); kfree(vp); return NULL; } pvr2_channel_init(&vp->channel,mnp); pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_v4l2 id=%p",vp); vp->channel.check_func = pvr2_v4l2_internal_check; /* register streams */ pvr2_v4l2_dev_init(vp->dev_video,vp,VFL_TYPE_GRABBER); pvr2_v4l2_dev_init(vp->dev_radio,vp,VFL_TYPE_RADIO); return vp; } /* Stuff for Emacs to see, in order to encourage consistent editing style: *** Local Variables: *** *** mode: c *** *** fill-column: 75 *** *** tab-width: 8 *** *** c-basic-offset: 8 *** *** End: *** */