diff options
Diffstat (limited to 'drivers/media/video/em28xx/em28xx-video.c')
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-video.c | 73 |
1 files changed, 55 insertions, 18 deletions
diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c index 7e4114ea15f..d3a959b9ee6 100644 --- a/drivers/media/video/em28xx/em28xx-video.c +++ b/drivers/media/video/em28xx/em28xx-video.c @@ -1,5 +1,5 @@ /* - em2820-video.c - driver for Empia EM2820/2840 USB video capture devices + em2820-video.c - driver for Empia EM2800/EM2820/2840 USB video capture devices Copyright (C) 2005 Markus Rechberger <mrechberger@gmail.com> Ludovico Cavedon <cavedon@sssup.it> @@ -50,6 +50,11 @@ MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); +static unsigned int card[] = {[0 ... (EM2820_MAXBOARDS - 1)] = UNSET }; + +module_param_array(card, int, NULL, 0444); +MODULE_PARM_DESC(card,"card type"); + static int tuner = -1; module_param(tuner, int, 0444); MODULE_PARM_DESC(tuner, "tuner type"); @@ -1081,7 +1086,7 @@ static int em2820_do_ioctl(struct inode *inode, struct file *filp, struct v4l2_cropcap *cc = arg; if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return EINVAL; + return -EINVAL; cc->bounds.left = 0; cc->bounds.top = 0; cc->bounds.width = dev->width; @@ -1520,21 +1525,12 @@ static struct file_operations em2820_v4l_fops = { static int em2820_init_dev(struct em2820 **devhandle, struct usb_device *udev, int minor, int model) { - struct em2820 *dev; + struct em2820 *dev = *devhandle; int retval = -ENOMEM; int errCode, i; unsigned int maxh, maxw; struct usb_interface *uif; - /* allocate memory for our device state and initialize it */ - dev = kmalloc(sizeof(*dev), GFP_KERNEL); - if (dev == NULL) { - em2820_err(DRIVER_NAME ": out of memory!\n"); - return -ENOMEM; - } - memset(dev, 0x00, sizeof(*dev)); - - snprintf(dev->name, 29, "em2820 #%d", minor); dev->udev = udev; dev->model = model; init_MUTEX(&dev->lock); @@ -1545,6 +1541,7 @@ static int em2820_init_dev(struct em2820 **devhandle, struct usb_device *udev, dev->em2820_read_reg_req_len = em2820_read_reg_req_len; dev->em2820_write_regs_req = em2820_write_regs_req; dev->em2820_read_reg_req = em2820_read_reg_req; + dev->is_em2800 = em2820_boards[model].is_em2800; dev->has_tuner = em2820_boards[model].has_tuner; dev->has_msp34xx = em2820_boards[model].has_msp34xx; dev->tda9887_conf = em2820_boards[model].tda9887_conf; @@ -1595,7 +1592,7 @@ static int em2820_init_dev(struct em2820 **devhandle, struct usb_device *udev, /* compute alternate max packet sizes */ uif = dev->udev->actconfig->interface[0]; dev->alt_max_pkt_size[0] = 0; - for (i = 1; i <= EM2820_MAX_ALT; i++) { + for (i = 1; i <= EM2820_MAX_ALT && i < uif->num_altsetting ; i++) { u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc. wMaxPacketSize); @@ -1688,7 +1685,6 @@ static int em2820_init_dev(struct em2820 **devhandle, struct usb_device *udev, em2820_info("V4L2 device registered as /dev/video%d\n", dev->vdev->minor); - *devhandle = dev; return 0; } @@ -1703,27 +1699,68 @@ static int em2820_usb_probe(struct usb_interface *interface, struct usb_device *udev; struct em2820 *dev = NULL; int retval = -ENODEV; + int model,i,nr; udev = usb_get_dev(interface_to_usbdev(interface)); endpoint = &interface->cur_altsetting->endpoint[1].desc; + /* Don't register audio interfaces */ + if (interface->altsetting[1].desc.bInterfaceClass == USB_CLASS_AUDIO) + return -ENODEV; + /* check if the the device has the iso in endpoint at the correct place */ if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC) { -/* em2820_err(DRIVER_NAME " probing error: endpoint is non-ISO endpoint!\n"); */ + em2820_err(DRIVER_NAME " probing error: endpoint is non-ISO endpoint!\n"); return -ENODEV; } if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) { -/* em2820_err(DRIVER_NAME " probing error: endpoint is ISO OUT endpoint!\n"); */ + em2820_err(DRIVER_NAME " probing error: endpoint is ISO OUT endpoint!\n"); return -ENODEV; } + model=id->driver_info; + nr=interface->minor; + + if (nr>EM2820_MAXBOARDS) { + printk ("em2820: Supports only %i em28xx boards.\n",EM2820_MAXBOARDS); + return -ENOMEM; + } + + /* allocate memory for our device state and initialize it */ + dev = kmalloc(sizeof(*dev), GFP_KERNEL); + if (dev == NULL) { + em2820_err(DRIVER_NAME ": out of memory!\n"); + return -ENOMEM; + } + memset(dev, 0, sizeof(*dev)); + + snprintf(dev->name, 29, "em2820 #%d", nr); + + if ((card[nr]>=0)&&(card[nr]<em2820_bcount)) + model=card[nr]; + + if ((model==EM2800_BOARD_UNKNOWN)||(model==EM2820_BOARD_UNKNOWN)) { + printk( "%s: Your board has no eeprom inside it and thus can't\n" + "%s: be autodetected. Please pass card=<n> insmod option to\n" + "%s: workaround that. Redirect complaints to the vendor of\n" + "%s: the TV card. Best regards,\n" + "%s: -- tux\n", + dev->name,dev->name,dev->name,dev->name,dev->name); + printk("%s: Here is a list of valid choices for the card=<n> insmod option:\n", + dev->name); + for (i = 0; i < em2820_bcount; i++) { + printk("%s: card=%d -> %s\n", + dev->name, i, em2820_boards[i].name); + } + } + /* allocate device struct */ - retval = em2820_init_dev(&dev, udev, interface->minor, id->driver_info); + retval = em2820_init_dev(&dev, udev, nr, model); if (retval) return retval; - em2820_info("Found %s\n", em2820_boards[id->driver_info].name); + em2820_info("Found %s\n", em2820_boards[model].name); /* save our data pointer in this interface device */ usb_set_intfdata(interface, dev); |