diff options
Diffstat (limited to 'kernel/include/linux/usb/ch9.h')
| -rw-r--r-- | kernel/include/linux/usb/ch9.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/kernel/include/linux/usb/ch9.h b/kernel/include/linux/usb/ch9.h index 27603bcbb..6cc96bb12 100644 --- a/kernel/include/linux/usb/ch9.h +++ b/kernel/include/linux/usb/ch9.h @@ -32,9 +32,9 @@ #ifndef __LINUX_USB_CH9_H #define __LINUX_USB_CH9_H +#include <linux/device.h> #include <uapi/linux/usb/ch9.h> - /** * usb_speed_string() - Returns human readable-name of the speed. * @speed: The speed to return human-readable name for. If it's not @@ -43,6 +43,15 @@ */ extern const char *usb_speed_string(enum usb_device_speed speed); +/** + * usb_get_maximum_speed - Get maximum requested speed for a given USB + * controller. + * @dev: Pointer to the given USB controller device + * + * The function gets the maximum speed string from property "maximum-speed", + * and returns the corresponding enum usb_device_speed. + */ +extern enum usb_device_speed usb_get_maximum_speed(struct device *dev); /** * usb_state_string - Returns human readable name for the state. |