diff options
Diffstat (limited to 'drivers/usb/core/usb.h')
| -rw-r--r-- | drivers/usb/core/usb.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index 1c528c1bf0b..a7f20bde0e5 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -1,6 +1,7 @@ #include <linux/pm.h> #include <linux/acpi.h> +struct usb_hub_descriptor; struct dev_state; /* Functions local to drivers/usb/core/ */ @@ -38,6 +39,15 @@ extern char *usb_cache_string(struct usb_device *udev, int index); extern int usb_set_configuration(struct usb_device *dev, int configuration); extern int usb_choose_configuration(struct usb_device *udev); +static inline unsigned usb_get_max_power(struct usb_device *udev, + struct usb_host_config *c) +{ + /* SuperSpeed power is in 8 mA units; others are in 2 mA units */ + unsigned mul = (udev->speed == USB_SPEED_SUPER ? 8 : 2); + + return c->desc.bMaxPower * mul; +} + extern void usb_kick_khubd(struct usb_device *dev); extern int usb_match_one_id_intf(struct usb_device *dev, struct usb_host_interface *intf, @@ -173,6 +183,8 @@ extern enum usb_port_connect_type usb_get_hub_port_connect_type(struct usb_device *hdev, int port1); extern void usb_set_hub_port_connect_type(struct usb_device *hdev, int port1, enum usb_port_connect_type type); +extern void usb_hub_adjust_deviceremovable(struct usb_device *hdev, + struct usb_hub_descriptor *desc); #ifdef CONFIG_ACPI extern int usb_acpi_register(void); |