static int empress_init(struct saa7134_dev *dev) { int err; dprintk("%s: %s\n",dev->name,__func__); dev->empress_dev = video_device_alloc(); if (NULL == dev->empress_dev) return -ENOMEM; *(dev->empress_dev) = saa7134_empress_template; dev->empress_dev->parent = &dev->pci->dev; dev->empress_dev->release = video_device_release; snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name), "%s empress (%s)", dev->name, saa7134_boards[dev->board].name); INIT_WORK(&dev->empress_workqueue, empress_signal_update); video_set_drvdata(dev->empress_dev, dev); err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER, empress_nr[dev->nr]); if (err < 0) { printk(KERN_INFO "%s: can't register video device\n", dev->name); video_device_release(dev->empress_dev); dev->empress_dev = NULL; return err; } printk(KERN_INFO "%s: registered device %s [mpeg]\n", dev->name, video_device_node_name(dev->empress_dev)); videobuf_queue_sg_init(&dev->empress_tsq, &saa7134_ts_qops, &dev->pci->dev, &dev->slock, V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_ALTERNATE, sizeof(struct saa7134_buf), dev); empress_signal_update(&dev->empress_workqueue); return 0; }
static int empress_init(struct saa7134_dev *dev) { struct v4l2_ctrl_handler *hdl = &dev->empress_ctrl_handler; struct vb2_queue *q; int err; pr_debug("%s: %s\n", dev->name, __func__); dev->empress_dev = video_device_alloc(); if (NULL == dev->empress_dev) return -ENOMEM; *(dev->empress_dev) = saa7134_empress_template; dev->empress_dev->v4l2_dev = &dev->v4l2_dev; dev->empress_dev->release = video_device_release; dev->empress_dev->lock = &dev->lock; snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name), "%s empress (%s)", dev->name, saa7134_boards[dev->board].name); v4l2_ctrl_handler_init(hdl, 21); v4l2_ctrl_add_handler(hdl, &dev->ctrl_handler, empress_ctrl_filter); if (dev->empress_sd) v4l2_ctrl_add_handler(hdl, dev->empress_sd->ctrl_handler, NULL); if (hdl->error) { video_device_release(dev->empress_dev); return hdl->error; } dev->empress_dev->ctrl_handler = hdl; INIT_WORK(&dev->empress_workqueue, empress_signal_update); q = &dev->empress_vbq; q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; /* * Do not add VB2_USERPTR: the saa7134 DMA engine cannot handle * transfers that do not start at the beginning of a page. A USERPTR * can start anywhere in a page, so USERPTR support is a no-go. */ q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ; q->drv_priv = &dev->ts_q; q->ops = &saa7134_empress_qops; q->gfp_flags = GFP_DMA32; q->mem_ops = &vb2_dma_sg_memops; q->buf_struct_size = sizeof(struct saa7134_buf); q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; q->lock = &dev->lock; q->dev = &dev->pci->dev; err = vb2_queue_init(q); if (err) return err; dev->empress_dev->queue = q; video_set_drvdata(dev->empress_dev, dev); err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER, empress_nr[dev->nr]); if (err < 0) { pr_info("%s: can't register video device\n", dev->name); video_device_release(dev->empress_dev); dev->empress_dev = NULL; return err; } pr_info("%s: registered device %s [mpeg]\n", dev->name, video_device_node_name(dev->empress_dev)); empress_signal_update(&dev->empress_workqueue); return 0; }