diff options
Diffstat (limited to 'common/usb.c')
| -rw-r--r-- | common/usb.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/common/usb.c b/common/usb.c index b1773914cf..9f67cc1e8e 100644 --- a/common/usb.c +++ b/common/usb.c @@ -1214,4 +1214,60 @@ bool usb_device_has_child_on_port(struct usb_device *parent, int port) #endif } +#ifdef CONFIG_DM_USB +void usb_find_usb2_hub_address_port(struct usb_device *udev, + uint8_t *hub_address, uint8_t *hub_port) +{ + struct udevice *parent; + struct usb_device *uparent, *ttdev; + + /* + * When called from usb-uclass.c: usb_scan_device() udev->dev points + * to the parent udevice, not the actual udevice belonging to the + * udev as the device is not instantiated yet. So when searching + * for the first usb-2 parent start with udev->dev not + * udev->dev->parent . + */ + ttdev = udev; + parent = udev->dev; + uparent = dev_get_parent_priv(parent); + + while (uparent->speed != USB_SPEED_HIGH) { + struct udevice *dev = parent; + + if (device_get_uclass_id(dev->parent) != UCLASS_USB_HUB) { + printf("Error: Cannot find high speed parent of usb-1 device\n"); + *hub_address = 0; + *hub_port = 0; + return; + } + + ttdev = dev_get_parent_priv(dev); + parent = dev->parent; + uparent = dev_get_parent_priv(parent); + } + *hub_address = uparent->devnum; + *hub_port = ttdev->portnr; +} +#else +void usb_find_usb2_hub_address_port(struct usb_device *udev, + uint8_t *hub_address, uint8_t *hub_port) +{ + /* Find out the nearest parent which is high speed */ + while (udev->parent->parent != NULL) + if (udev->parent->speed != USB_SPEED_HIGH) { + udev = udev->parent; + } else { + *hub_address = udev->parent->devnum; + *hub_port = udev->portnr; + return; + } + + printf("Error: Cannot find high speed parent of usb-1 device\n"); + *hub_address = 0; + *hub_port = 0; +} +#endif + + /* EOF */ |
