| What: /config/usb-gadget |
| Date: Jun 2013 |
| KernelVersion: 3.11 |
| Description: |
| This group contains sub-groups corresponding to created |
| USB gadgets. |
| |
| What: /config/usb-gadget/gadget |
| Date: Jun 2013 |
| KernelVersion: 3.11 |
| Description: |
| |
| The attributes of a gadget: |
| |
| ================ ============================================ |
| UDC bind a gadget to UDC/unbind a gadget; |
| write UDC's name found in /sys/class/udc/* |
| to bind a gadget, empty string "" to unbind. |
| |
| max_speed maximum speed the driver supports. Valid |
| names are super-speed-plus, super-speed, |
| high-speed, full-speed, and low-speed. |
| |
| bDeviceClass USB device class code |
| bDeviceSubClass USB device subclass code |
| bDeviceProtocol USB device protocol code |
| bMaxPacketSize0 maximum endpoint 0 packet size |
| bcdDevice bcd device release number |
| bcdUSB bcd USB specification version number |
| idProduct product ID |
| idVendor vendor ID |
| ================ ============================================ |
| |
| What: /config/usb-gadget/gadget/configs |
| Date: Jun 2013 |
| KernelVersion: 3.11 |
| Description: |
| This group contains a USB gadget's configurations |
| |
| What: /config/usb-gadget/gadget/configs/config |
| Date: Jun 2013 |
| KernelVersion: 3.11 |
| Description: |
| The attributes of a configuration: |
| |
| ================ ====================================== |
| bmAttributes configuration characteristics |
| MaxPower maximum power consumption from the bus |
| ================ ====================================== |
| |
| What: /config/usb-gadget/gadget/configs/config/strings |
| Date: Jun 2013 |
| KernelVersion: 3.11 |
| Description: |
| This group contains subdirectories for language-specific |
| strings for this configuration. |
| |
| What: /config/usb-gadget/gadget/configs/config/strings/language |
| Date: Jun 2013 |
| KernelVersion: 3.11 |
| Description: |
| The attributes: |
| |
| ================ ========================= |
| configuration configuration description |
| ================ ========================= |
| |
| |
| What: /config/usb-gadget/gadget/functions |
| Date: Jun 2013 |
| KernelVersion: 3.11 |
| Description: |
| This group contains functions available to this USB gadget. |
| |
| What: /config/usb-gadget/gadget/functions/<func>.<inst>/interface.<n> |
| Date: May 2014 |
| KernelVersion: 3.16 |
| Description: |
| This group contains "Feature Descriptors" specific for one |
| gadget's USB interface or one interface group described |
| by an IAD. |
| |
| The attributes: |
| |
| ================= ===================================== |
| compatible_id 8-byte string for "Compatible ID" |
| sub_compatible_id 8-byte string for "Sub Compatible ID" |
| ================= ===================================== |
| |
| What: /config/usb-gadget/gadget/functions/<func>.<inst>/interface.<n>/<property> |
| Date: May 2014 |
| KernelVersion: 3.16 |
| Description: |
| This group contains "Extended Property Descriptors" specific for one |
| gadget's USB interface or one interface group described |
| by an IAD. |
| |
| The attributes: |
| |
| ===== =============================================== |
| type value 1..7 for interpreting the data |
| |
| - 1: unicode string |
| - 2: unicode string with environment variable |
| - 3: binary |
| - 4: little-endian 32-bit |
| - 5: big-endian 32-bit |
| - 6: unicode string with a symbolic link |
| - 7: multiple unicode strings |
| data blob of data to be interpreted depending on |
| type |
| ===== =============================================== |
| |
| What: /config/usb-gadget/gadget/strings |
| Date: Jun 2013 |
| KernelVersion: 3.11 |
| Description: |
| This group contains subdirectories for language-specific |
| strings for this gadget. |
| |
| What: /config/usb-gadget/gadget/strings/language |
| Date: Jun 2013 |
| KernelVersion: 3.11 |
| Description: |
| The attributes: |
| |
| ============ ================================= |
| serialnumber gadget's serial number (string) |
| product gadget's product description |
| manufacturer gadget's manufacturer description |
| ============ ================================= |
| |
| What: /config/usb-gadget/gadget/os_desc |
| Date: May 2014 |
| KernelVersion: 3.16 |
| Description: |
| This group contains "OS String" extension handling attributes. |
| |
| ============= =============================================== |
| use flag turning "OS Descriptors" support on/off |
| b_vendor_code one-byte value used for custom per-device and |
| per-interface requests |
| qw_sign an identifier to be reported as "OS String" |
| proper |
| ============= =============================================== |
