diff options
Diffstat (limited to 'drivers/media/video/au0828')
| -rw-r--r-- | drivers/media/video/au0828/au0828-cards.c | 4 | ||||
| -rw-r--r-- | drivers/media/video/au0828/au0828-core.c | 17 | ||||
| -rw-r--r-- | drivers/media/video/au0828/au0828-video.c | 8 |
3 files changed, 22 insertions, 7 deletions
diff --git a/drivers/media/video/au0828/au0828-cards.c b/drivers/media/video/au0828/au0828-cards.c index 053bbe8c8e3..830c4a933f6 100644 --- a/drivers/media/video/au0828/au0828-cards.c +++ b/drivers/media/video/au0828/au0828-cards.c @@ -136,9 +136,9 @@ int au0828_tuner_callback(void *priv, int component, int command, int arg) /* Tuner Reset Command from xc5000 */ /* Drive the tuner into reset and out */ au0828_clear(dev, REG_001, 2); - mdelay(200); + mdelay(10); au0828_set(dev, REG_001, 2); - mdelay(50); + mdelay(10); return 0; } else { printk(KERN_ERR diff --git a/drivers/media/video/au0828/au0828-core.c b/drivers/media/video/au0828/au0828-core.c index a1e4c0d769a..3544a2f12f1 100644 --- a/drivers/media/video/au0828/au0828-core.c +++ b/drivers/media/video/au0828/au0828-core.c @@ -36,6 +36,11 @@ int au0828_debug; module_param_named(debug, au0828_debug, int, 0644); MODULE_PARM_DESC(debug, "enable debug messages"); +static unsigned int disable_usb_speed_check; +module_param(disable_usb_speed_check, int, 0444); +MODULE_PARM_DESC(disable_usb_speed_check, + "override min bandwidth requirement of 480M bps"); + #define _AU0828_BULKPIPE 0x03 #define _BULKPIPESIZE 0xffff @@ -181,6 +186,18 @@ static int au0828_usb_probe(struct usb_interface *interface, le16_to_cpu(usbdev->descriptor.idProduct), ifnum); + /* + * Make sure we have 480 Mbps of bandwidth, otherwise things like + * video stream wouldn't likely work, since 12 Mbps is generally + * not enough even for most Digital TV streams. + */ + if (usbdev->speed != USB_SPEED_HIGH && disable_usb_speed_check == 0) { + printk(KERN_ERR "au0828: Device initialization failed.\n"); + printk(KERN_ERR "au0828: Device must be connected to a " + "high-speed USB 2.0 port.\n"); + return -ENODEV; + } + dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (dev == NULL) { printk(KERN_ERR "%s() Unable to allocate memory\n", __func__); diff --git a/drivers/media/video/au0828/au0828-video.c b/drivers/media/video/au0828/au0828-video.c index 27bedc6c779..51527d7b55a 100644 --- a/drivers/media/video/au0828/au0828-video.c +++ b/drivers/media/video/au0828/au0828-video.c @@ -829,6 +829,9 @@ static int au0828_v4l2_close(struct file *filp) au0828_uninit_isoc(dev); + /* Save some power by putting tuner to sleep */ + v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_standby); + /* When close the device, set the usb intf0 into alt0 to free USB bandwidth */ ret = usb_set_interface(dev->usbdev, 0, 0); @@ -910,11 +913,6 @@ static int au0828_v4l2_mmap(struct file *filp, struct vm_area_struct *vma) rc = videobuf_mmap_mapper(&fh->vb_vidq, vma); - dprintk(2, "vma start=0x%08lx, size=%ld, ret=%d\n", - (unsigned long)vma->vm_start, - (unsigned long)vma->vm_end-(unsigned long)vma->vm_start, - rc); - return rc; } |