// SPDX-License-Identifier: GPL-2.0+
/*
* F81532/F81534 USB to Serial Ports Bridge
*
* F81532 => 2 Serial Ports
* F81534 => 4 Serial Ports
*
* Copyright (C) 2016 Feature Integration Technology Inc., (Fintek)
* Copyright (C) 2016 Tom Tsai (Tom_Tsai@fintek.com.tw)
* Copyright (C) 2016 Peter Hong (Peter_Hong@fintek.com.tw)
*
* The F81532/F81534 had 1 control endpoint for setting, 1 endpoint bulk-out
* for all serial port TX and 1 endpoint bulk-in for all serial port read in
* (Read Data/MSR/LSR).
*
* Write URB is fixed with 512bytes, per serial port used 128Bytes.
* It can be described by f81534_prepare_write_buffer()
*
* Read URB is 512Bytes max, per serial port used 128Bytes.
* It can be described by f81534_process_read_urb() and maybe received with
* 128x1,2,3,4 bytes.
