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platform_system_core
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libusbhost: Added usb_device_get_unique_id 

Signed-off-by: Mike Lockwood <lockwood@android.com>
This commit is contained in:
Mike Lockwood 2010-05-27 10:12:03 -04:00
parent f4dd883389
commit 203f102028
2 changed files with 13 additions and 0 deletions
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5
include/usbhost/usbhost.h
View File

@ -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);

8
libusbhost/usbhost.c
View File

@ -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;