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/dev/usb/hid is used to interact with USB HIDs in IOS57, 58 and 59.
Handles for USB_HID function exactly the same as for USB_VEN.
Internal device structure
HID has an additional member at the end of the device structure that seems to be used for keeping track of ongoing transfers.
|0||GetVersion||Identical to VEN|
|1||GetDeviceChange||Identical to VEN|
|2||Shutdown||Identical to VEN|
|3||GetDeviceInfo||Similar to VEN, but with different offsets|
|4||?||Identical to VEN|
|5||?||Identical to VEN|
|6||AttachFinish||Identical to VEN|
|7||SetAlternateSetting||Not available in HID|
|8||?||Does not exist in HID|
|0x10||SuspendResume||Identical to VEN|
|0x11||CancelEndpoint||Calls /dev/usb/usb ioctl 0x10
Depending on the endpoint (
|0x12 (ioctlv)||CtrlTransfer (?)||?|
|0x13 (ioctlv)||IntrTransfer (?)||?|
|0x14 (ioctlv)||IsoTransfer||Not available in HID|
|0x15 (ioctlv)||BulkTransfer||Not available in HID|