diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-core.c | 9 | ||||
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-video.c | 45 | ||||
| -rw-r--r-- | drivers/media/video/em28xx/em28xx.h | 4 |
3 files changed, 34 insertions, 24 deletions
diff --git a/drivers/media/video/em28xx/em28xx-core.c b/drivers/media/video/em28xx/em28xx-core.c index 5cc850666fd..d54bc012748 100644 --- a/drivers/media/video/em28xx/em28xx-core.c +++ b/drivers/media/video/em28xx/em28xx-core.c @@ -797,20 +797,19 @@ int em28xx_set_alternate(struct em28xx *dev) dev->alt = alt; if (dev->alt == 0) { int i; - for(i=0;i< EM28XX_MAX_ALT; i++) + for(i=0;i< dev->num_alt; i++) if(dev->alt_max_pkt_size[i]>dev->alt_max_pkt_size[dev->alt]) dev->alt=i; } if (dev->alt != prev_alt) { dev->max_pkt_size = dev->alt_max_pkt_size[dev->alt]; - em28xx_coredbg("setting alternate %d with wMaxPacketSize=%u", dev->alt, + em28xx_coredbg("setting alternate %d with wMaxPacketSize=%u\n", dev->alt, dev->max_pkt_size); errCode = usb_set_interface(dev->udev, 0, dev->alt); if (errCode < 0) { - em28xx_errdev - ("cannot change alternate number to %d (error=%i)\n", - dev->alt, errCode); + em28xx_errdev ("cannot change alternate number to %d (error=%i)\n", + dev->alt, errCode); return errCode; } } diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c index 0bbfce03172..57c1826b928 100644 --- a/drivers/media/video/em28xx/em28xx-video.c +++ b/drivers/media/video/em28xx/em28xx-video.c @@ -53,8 +53,7 @@ MODULE_LICENSE("GPL"); static LIST_HEAD(em28xx_devlist); -static unsigned int card[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; - +static unsigned int card[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; module_param_array(card, int, NULL, 0444); MODULE_PARM_DESC(card,"card type"); @@ -1591,7 +1590,6 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev, int retval = -ENOMEM; int errCode, i; unsigned int maxh, maxw; - struct usb_interface *uif; dev->udev = udev; dev->model = model; @@ -1651,17 +1649,6 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev, dev->vpic.depth = 16; dev->vpic.palette = VIDEO_PALETTE_YUV422; - /* compute alternate max packet sizes */ - uif = dev->udev->actconfig->interface[0]; - dev->alt_max_pkt_size[0] = 0; - for (i = 1; i <= EM28XX_MAX_ALT && i < uif->num_altsetting ; i++) { - u16 tmp = - le16_to_cpu(uif->altsetting[i].endpoint[1].desc. - wMaxPacketSize); - dev->alt_max_pkt_size[i] = - (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1); - } - #ifdef CONFIG_MODULES /* request some modules */ if (dev->decoder == EM28XX_SAA7113 || dev->decoder == EM28XX_SAA7114) @@ -1756,6 +1743,7 @@ static int em28xx_usb_probe(struct usb_interface *interface, { const struct usb_endpoint_descriptor *endpoint; struct usb_device *udev; + struct usb_interface *uif; struct em28xx *dev = NULL; int retval = -ENODEV; int model,i,nr,ifnum; @@ -1795,7 +1783,7 @@ static int em28xx_usb_probe(struct usb_interface *interface, nr=interface->minor; if (nr>EM28XX_MAXBOARDS) { - printk ("em28xx: Supports only %i em28xx boards.\n",EM28XX_MAXBOARDS); + printk (DRIVER_NAME ": Supports only %i em28xx boards.\n",EM28XX_MAXBOARDS); return -ENOMEM; } @@ -1807,6 +1795,28 @@ static int em28xx_usb_probe(struct usb_interface *interface, } memset(dev, 0, sizeof(*dev)); + /* compute alternate max packet sizes */ + uif = udev->actconfig->interface[0]; + + dev->num_alt=uif->num_altsetting; + printk(DRIVER_NAME ": Alternate settings: %i\n",dev->num_alt); +// dev->alt_max_pkt_size = kmalloc(sizeof(*dev->alt_max_pkt_size)* + dev->alt_max_pkt_size = kmalloc(32* + dev->num_alt,GFP_KERNEL); + if (dev->alt_max_pkt_size == NULL) { + em28xx_err(DRIVER_NAME ": out of memory!\n"); + return -ENOMEM; + } + + for (i = 0; i < dev->num_alt ; i++) { + u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc. + wMaxPacketSize); + dev->alt_max_pkt_size[i] = + (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1); + printk(DRIVER_NAME ": Alternate setting %i, max size= %i\n",i, + dev->alt_max_pkt_size[i]); + } + snprintf(dev->name, 29, "em28xx #%d", nr); if ((card[nr]>=0)&&(card[nr]<em28xx_bcount)) @@ -1876,11 +1886,12 @@ static void em28xx_usb_disconnect(struct usb_interface *interface) up(&dev->lock); - if (!dev->users) + if (!dev->users) { + kfree(dev->alt_max_pkt_size); kfree(dev); + } up_write(&em28xx_disconnect); - } static struct usb_driver em28xx_usb_driver = { diff --git a/drivers/media/video/em28xx/em28xx.h b/drivers/media/video/em28xx/em28xx.h index d51f8c63bcf..5c7a41ce69f 100644 --- a/drivers/media/video/em28xx/em28xx.h +++ b/drivers/media/video/em28xx/em28xx.h @@ -63,7 +63,6 @@ /* default alternate; 0 means choose the best */ #define EM28XX_PINOUT 0 -#define EM28XX_MAX_ALT 7 #define EM28XX_INTERLACED_DEFAULT 1 @@ -267,7 +266,8 @@ struct em28xx { struct usb_device *udev; /* the usb device */ int alt; /* alternate */ int max_pkt_size; /* max packet size of isoc transaction */ - unsigned int alt_max_pkt_size[EM28XX_MAX_ALT + 1]; /* array of wMaxPacketSize */ + int num_alt; /* Number of alternative settings */ + unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */ struct urb *urb[EM28XX_NUM_BUFS]; /* urb for isoc transfers */ char *transfer_buffer[EM28XX_NUM_BUFS]; /* transfer buffers for isoc transfer */ /* helper funcs that call usb_control_msg */ |