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Diffstat (limited to 'drivers/media/video/em28xx/em28xx-video.c')
-rw-r--r--drivers/media/video/em28xx/em28xx-video.c73
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);