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| author | Pete Batard <pbatard@gmail.com> | 2011-01-20 12:45:26 +0000 |
|---|---|---|
| committer | Pete Batard <pbatard@gmail.com> | 2011-01-20 12:45:26 +0000 |
| commit | c34d9497f31a5a4279b328bd89b99f212578fe73 (patch) | |
| tree | c1f8beb82c039dca2004a1aaf419f2c798abc21e /libusb/libusb.h | |
| parent | 4f7cc4982a43a4529d4aaafb71d5d6570b51f4a8 (diff) | |
| download | libusb-c34d9497f31a5a4279b328bd89b99f212578fe73.tar.gz | |
added get_device_topology optional API call
* Windows only, unsupported on other platforms
Diffstat (limited to 'libusb/libusb.h')
| -rw-r--r-- | libusb/libusb.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/libusb/libusb.h b/libusb/libusb.h index b57fe1a..a89e326 100644 --- a/libusb/libusb.h +++ b/libusb/libusb.h @@ -675,6 +675,20 @@ typedef struct libusb_device libusb_device; */ typedef struct libusb_device_handle libusb_device_handle; +/** \ingroup dev + * Structure representing the topology of an USB device. + */ +struct libusb_device_topology { + /** Opaque device handle to the USB parent (a Hub or a HCD) */ + libusb_device* parent_dev; + /** Bus number to which the device is connected, as seen by the OS */ + uint8_t bus; + /** Depth to HCD for this bus (0 depth means the HCD device) */ + uint8_t depth; + /** Hub port onto which the device is plugged in, as seen by the OS */ + uint8_t port; +}; + /** \ingroup misc * Error codes. Most libusb functions return 0 on success or one of these * codes on failure. @@ -920,6 +934,9 @@ int LIBUSB_CALL libusb_detach_kernel_driver(libusb_device_handle *dev, int LIBUSB_CALL libusb_attach_kernel_driver(libusb_device_handle *dev, int interface_number); +int LIBUSB_CALL libusb_get_device_topology(struct libusb_device *dev, + struct libusb_device_topology *topology); + /* async I/O */ /** \ingroup asyncio |