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Commit 203f1020 authored by Mike Lockwood's avatar Mike Lockwood
Browse files

libusbhost: Added usb_device_get_unique_id 



Signed-off-by: default avatarMike Lockwood <lockwood@android.com>
parent f4dd8833

include/usbhost/usbhost.h

+5 −0
Original line number Diff line number Diff line
@@ -57,6 +57,11 @@ void usb_device_close(struct usb_device *device); 
 */

const char* usb_device_get_name(struct usb_device *device);



/* Returns a unique ID for the device.  Currently this is generated from the

 * dev_name path.

 */

int usb_device_get_unique_id(struct usb_device *device);



/* Returns the USB vendor ID from the device descriptor for the USB device */

uint16_t usb_device_get_vendor_id(struct usb_device *device);

libusbhost/usbhost.c

+8 −0
Original line number Diff line number Diff line
@@ -41,6 +41,7 @@ 
#include "usbhost/usbhost.h"



#define USB_FS_DIR "/dev/bus/usb"

#define USB_FS_ID_SCANNER   "/dev/bus/usb/%d/%d"



#if 0

#define D printf
@@ -243,6 +244,13 @@ const char* usb_device_get_name(struct usb_device *device) 
    return device->dev_name;

}



int usb_device_get_unique_id(struct usb_device *device)

{

    int bus = 0, dev = 0;

    sscanf(device->dev_name, USB_FS_ID_SCANNER, &bus, &dev);

    return bus * 1000 + dev;

}



uint16_t usb_device_get_vendor_id(struct usb_device *device)

{

    struct usb_device_descriptor* desc = (struct usb_device_descriptor*)device->desc;