libusbhost: Add usb_device_set_configuration and usb_device_set_interface
usb_device_set_configuration is to support devices with multiple configurations
usb_device_set_interface supports switching between interfaces with alternate settings
Also moved zero string index checking to usb_device_get_string
Change-Id: I34610b25f135894a0cf752a33e5738d4314d7122
diff --git a/include/usbhost/usbhost.h b/include/usbhost/usbhost.h
index 1d67c12..d26e931 100644
--- a/include/usbhost/usbhost.h
+++ b/include/usbhost/usbhost.h
@@ -189,6 +189,13 @@
int usb_device_connect_kernel_driver(struct usb_device *device,
unsigned int interface, int connect);
+/* Sets the current configuration for the device to the specified configuration */
+int usb_device_set_configuration(struct usb_device *device, int configuration);
+
+/* Sets the specified interface of a USB device */
+int usb_device_set_interface(struct usb_device *device, unsigned int interface,
+ unsigned int alt_setting);
+
/* Sends a control message to the specified device on endpoint zero */
int usb_device_control_transfer(struct usb_device *device,
int requestType,