linux-imx

/* SPDX-License-Identifier: GPL-2.0 */

/*

 * Driver definitions for the FTDI USB Single Port Serial Converter -

 * known as FTDI_SIO (Serial Input/Output application of the chipset)

 *

 * For USB vendor/product IDs (VID/PID), please see ftdi_sio_ids.h

 *

 *

 * The example I have is known as the USC-1000 which is available from

 * http://www.dse.co.nz - cat no XH4214 It looks similar to this:

 * http://www.dansdata.com/usbser.htm but I can't be sure There are other

 * USC-1000s which don't look like my device though so beware!

 *

 * The device is based on the FTDI FT8U100AX chip. It has a DB25 on one side,

 * USB on the other.

 *

 * Thanx to FTDI (http://www.ftdichip.com) for so kindly providing details

 * of the protocol required to talk to the device and ongoing assistence

 * during development.

 *

 * Bill Ryder - bryder@sgi.com formerly of Silicon Graphics, Inc.- wrote the

 * FTDI_SIO implementation.

 *

 */

​

/* Commands */

#define FTDI_SIO_RESET          0 /* Reset the port */

#define FTDI_SIO_MODEM_CTRL     1 /* Set the modem control register */

#define FTDI_SIO_SET_FLOW_CTRL      2 /* Set flow control register */

#define FTDI_SIO_SET_BAUD_RATE      3 /* Set baud rate */

#define FTDI_SIO_SET_DATA       4 /* Set the data characteristics of

                         the port */

#define FTDI_SIO_GET_MODEM_STATUS   5 /* Retrieve current value of modem

                         status register */

#define FTDI_SIO_SET_EVENT_CHAR     6 /* Set the event character */

#define FTDI_SIO_SET_ERROR_CHAR     7 /* Set the error character */

#define FTDI_SIO_SET_LATENCY_TIMER  9 /* Set the latency timer */

#define FTDI_SIO_GET_LATENCY_TIMER  0x0a /* Get the latency timer */

#define FTDI_SIO_SET_BITMODE        0x0b /* Set bitbang mode */

#define FTDI_SIO_READ_PINS      0x0c /* Read immediate value of pins */

#define FTDI_SIO_READ_EEPROM        0x90 /* Read EEPROM */

​

/* Interface indices for FT2232, FT2232H and FT4232H devices */

#define INTERFACE_A     1

#define INTERFACE_B     2

#define INTERFACE_C     3

#define INTERFACE_D     4

​

​

/*

 *   BmRequestType:  1100 0000b

 *   bRequest:       FTDI_E2_READ

 *   wValue:         0

 *   wIndex:         Address of word to read

 *   wLength:        2

 *   Data:           Will return a word of data from E2Address

 *

 */

​

/* Port Identifier Table */

#define PIT_DEFAULT     0 /* SIOA */

#define PIT_SIOA        1 /* SIOA */

/* The device this driver is tested with one has only one port */