| 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. |
| |
| 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 Desctiptors" 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 |
