ftdi_sio.h

linux-2.6.15.6

 * RM Michaelides CANview USB (http://www.rmcan.com)
 * CAN fieldbus interface adapter, added by port GmbH www.port.de)
 * Ian Abbott changed the macro names for consistency.
 */
#define FTDI_RM_CANVIEW_PID	0xfd60	/* Product Id */

/*
 * EVER Eco Pro UPS (http://www.ever.com.pl/)
 */

#define	EVER_ECO_PRO_CDS	0xe520	/* RS-232 converter */

/*
 * 4N-GALAXY.DE PIDs for CAN-USB, USB-RS232, USB-RS422, USB-RS485,
 * USB-TTY activ, USB-TTY passiv.  Some PIDs are used by several devices
 * and I'm not entirely sure which are used by which.
 */
#define FTDI_4N_GALAXY_DE_0_PID	0x8372
#define FTDI_4N_GALAXY_DE_1_PID	0xF3C0
#define FTDI_4N_GALAXY_DE_2_PID	0xF3C1

/*
 * Mobility Electronics products.
 */
#define MOBILITY_VID			0x1342
#define MOBILITY_USB_SERIAL_PID		0x0202	/* EasiDock USB 200 serial */

/*
 * microHAM product IDs (http://www.microham.com).
 * Submitted by Justin Burket (KL1RL) <[e-mail]>.
 */
#define FTDI_MHAM_Y6_PID 0xEEEA		/* USB-Y6 interface */
#define FTDI_MHAM_Y8_PID 0xEEEB		/* USB-Y8 interface */

/*
 * Active Robots product ids.
 */
#define FTDI_ACTIVE_ROBOTS_PID	0xE548	/* USB comms board */

/*
 * Xsens Technologies BV products (http://www.xsens.com).
 */
#define XSENS_CONVERTER_0_PID	0xD388
#define XSENS_CONVERTER_1_PID	0xD389
#define XSENS_CONVERTER_2_PID	0xD38A
#define XSENS_CONVERTER_3_PID	0xD38B
#define XSENS_CONVERTER_4_PID	0xD38C
#define XSENS_CONVERTER_5_PID	0xD38D
#define XSENS_CONVERTER_6_PID	0xD38E
#define XSENS_CONVERTER_7_PID	0xD38F

/*
 * Evolution Robotics products (http://www.evolution.com/).
 * Submitted by Shawn M. Lavelle.
 */
#define EVOLUTION_VID		0xDEEE	/* Vendor ID */
#define EVOLUTION_ER1_PID	0x0300	/* ER1 Control Module */

/* Pyramid Computer GmbH */
#define FTDI_PYRAMID_PID	0xE6C8	/* Pyramid Appliance Display */

/* 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 modern 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	10 /* Get the latency timer */


/*
 *   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 */
#define PIT_SIOB		2 /* SIOB */
#define PIT_PARALLEL		3 /* Parallel */

/* FTDI_SIO_RESET */
#define FTDI_SIO_RESET_REQUEST FTDI_SIO_RESET
#define FTDI_SIO_RESET_REQUEST_TYPE 0x40
#define FTDI_SIO_RESET_SIO 0
#define FTDI_SIO_RESET_PURGE_RX 1
#define FTDI_SIO_RESET_PURGE_TX 2

/*
 * BmRequestType:  0100 0000B
 * bRequest:       FTDI_SIO_RESET
 * wValue:         Control Value 
 *                   0 = Reset SIO
 *                   1 = Purge RX buffer
 *                   2 = Purge TX buffer
 * wIndex:         Port
 * wLength:        0
 * Data:           None
 *
 * The Reset SIO command has this effect:
 *
 *    Sets flow control set to 'none'
 *    Event char = $0D
 *    Event trigger = disabled
 *    Purge RX buffer
 *    Purge TX buffer
 *    Clear DTR
 *    Clear RTS
 *    baud and data format not reset
 *
 * The Purge RX and TX buffer commands affect nothing except the buffers
 *
   */

/* FTDI_SIO_SET_BAUDRATE */
#define FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE 0x40
#define FTDI_SIO_SET_BAUDRATE_REQUEST 3

/*
 * BmRequestType:  0100 0000B
 * bRequest:       FTDI_SIO_SET_BAUDRATE
 * wValue:         BaudDivisor value - see below
 * wIndex:         Port
 * wLength:        0
 * Data:           None
 * The BaudDivisor values are calculated as follows:
 * - BaseClock is either 12000000 or 48000000 depending on the device. FIXME: I wish
 *   I knew how to detect old chips to select proper base clock!
 * - BaudDivisor is a fixed point number encoded in a funny way.
 *   (--WRONG WAY OF THINKING--)
 *   BaudDivisor is a fixed point number encoded with following bit weighs:
 *   (-2)(-1)(13..0). It is a radical with a denominator of 4, so values
 *   end with 0.0 (00...), 0.25 (10...), 0.5 (01...), and 0.75 (11...).
 *   (--THE REALITY--)
 *   The both-bits-set has quite different meaning from 0.75 - the chip designers
 *   have decided it to mean 0.125 instead of 0.75.
 *   This info looked up in FTDI application note "FT8U232 DEVICES \ Data Rates
 *   and Flow Control Consideration for USB to RS232".
 * - BaudDivisor = (BaseClock / 16) / BaudRate, where the (=) operation should
 *   automagically re-encode the resulting value to take fractions into consideration.
 * As all values are integers, some bit twiddling is in order:
 *   BaudDivisor = (BaseClock / 16 / BaudRate) |
 *   (((BaseClock / 2 / BaudRate) & 4) ? 0x4000    // 0.5
 *    : ((BaseClock / 2 / BaudRate) & 2) ? 0x8000  // 0.25
 *    : ((BaseClock / 2 / BaudRate) & 1) ? 0xc000  // 0.125
 *    : 0)
 *
 * For the FT232BM, a 17th divisor bit was introduced to encode the multiples
 * of 0.125 missing from the FT8U232AM.  Bits 16 to 14 are coded as follows
 * (the first four codes are the same as for the FT8U232AM, where bit 16 is
 * always 0):
 *   000 - add .000 to divisor
 *   001 - add .500 to divisor
 *   010 - add .250 to divisor
 *   011 - add .125 to divisor
 *   100 - add .375 to divisor
 *   101 - add .625 to divisor
 *   110 - add .750 to divisor
 *   111 - add .875 to divisor
 * Bits 15 to 0 of the 17-bit divisor are placed in the urb value.  Bit 16 is 
 * placed in bit 0 of the urb index.
 *
 * Note that there are a couple of special cases to support the highest baud
 * rates.  If the calculated divisor value is 1, this needs to be replaced with
 * 0.  Additionally for the FT232BM, if the calculated divisor value is 0x4001
 * (1.5), this needs to be replaced with 0x0001 (1) (but this divisor value is
 * not supported by the FT8U232AM).
 */

typedef enum {
	SIO = 1,
	FT8U232AM = 2,
	FT232BM = 3,
	FT2232C = 4,
} ftdi_chip_type_t;

typedef enum {
 ftdi_sio_b300 = 0, 
 ftdi_sio_b600 = 1, 
 ftdi_sio_b1200 = 2,
 ftdi_sio_b2400 = 3,
 ftdi_sio_b4800 = 4,
 ftdi_sio_b9600 = 5,
 ftdi_sio_b19200 = 6,
 ftdi_sio_b38400 = 7,
 ftdi_sio_b57600 = 8,
 ftdi_sio_b115200 = 9
} FTDI_SIO_baudrate_t ;

/*
 * The ftdi_8U232AM_xxMHz_byyy constants have been removed. The encoded divisor values
 * are calculated internally.
 */

#define FTDI_SIO_SET_DATA_REQUEST FTDI_SIO_SET_DATA
#define FTDI_SIO_SET_DATA_REQUEST_TYPE 0x40
#define FTDI_SIO_SET_DATA_PARITY_NONE (0x0 << 8 )
#define FTDI_SIO_SET_DATA_PARITY_ODD (0x1 << 8 )
#define FTDI_SIO_SET_DATA_PARITY_EVEN (0x2 << 8 )
#define FTDI_SIO_SET_DATA_PARITY_MARK (0x3 << 8 )
#define FTDI_SIO_SET_DATA_PARITY_SPACE (0x4 << 8 )
#define FTDI_SIO_SET_DATA_STOP_BITS_1 (0x0 << 11 )
#define FTDI_SIO_SET_DATA_STOP_BITS_15 (0x1 << 11 )
#define FTDI_SIO_SET_DATA_STOP_BITS_2 (0x2 << 11 )
#define FTDI_SIO_SET_BREAK (0x1 << 14)
/* FTDI_SIO_SET_DATA */

/*
 * BmRequestType:  0100 0000B 
 * bRequest:       FTDI_SIO_SET_DATA
 * wValue:         Data characteristics (see below)
 * wIndex:         Port
 * wLength:        0
 * Data:           No
 *
 * Data characteristics
 *
 *   B0..7   Number of data bits
 *   B8..10  Parity
 *           0 = None
 *           1 = Odd
 *           2 = Even
 *           3 = Mark
 *           4 = Space
 *   B11..13 Stop Bits
 *           0 = 1
 *           1 = 1.5
 *           2 = 2
 *   B14
 *           1 = TX ON (break)
 *           0 = TX OFF (normal state)
 *   B15 Reserved
 *
 */



/* FTDI_SIO_MODEM_CTRL */
#define FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE 0x40
#define FTDI_SIO_SET_MODEM_CTRL_REQUEST FTDI_SIO_MODEM_CTRL

/* 
 * BmRequestType:   0100 0000B
 * bRequest:        FTDI_SIO_MODEM_CTRL
 * wValue:          ControlValue (see below)
 * wIndex:          Port
 * wLength:         0
 * Data:            None
 *
 * NOTE: If the device is in RTS/CTS flow control, the RTS set by this
 * command will be IGNORED without an error being returned
 * Also - you can not set DTR and RTS with one control message
 */

#define FTDI_SIO_SET_DTR_MASK 0x1
#define FTDI_SIO_SET_DTR_HIGH ( 1 | ( FTDI_SIO_SET_DTR_MASK  << 8))
#define FTDI_SIO_SET_DTR_LOW  ( 0 | ( FTDI_SIO_SET_DTR_MASK  << 8))
#define FTDI_SIO_SET_RTS_MASK 0x2
#define FTDI_SIO_SET_RTS_HIGH ( 2 | ( FTDI_SIO_SET_RTS_MASK << 8 ))
#define FTDI_SIO_SET_RTS_LOW ( 0 | ( FTDI_SIO_SET_RTS_MASK << 8 ))

/*
 * ControlValue
 * B0    DTR state
 *          0 = reset
 *          1 = set
 * B1    RTS state
 *          0 = reset
 *          1 = set
 * B2..7 Reserved
 * B8    DTR state enable
 *          0 = ignore
 *          1 = use DTR state
 * B9    RTS state enable
 *          0 = ignore
 *          1 = use RTS state
 * B10..15 Reserved
 */

/* FTDI_SIO_SET_FLOW_CTRL */
#define FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE 0x40
#define FTDI_SIO_SET_FLOW_CTRL_REQUEST FTDI_SIO_SET_FLOW_CTRL
#define FTDI_SIO_DISABLE_FLOW_CTRL 0x0