Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 260 insertions, 0 deletions

diff --git a/drivers/usb/serial/keyspan_usa26msg.h b/drivers/usb/serial/keyspan_usa26msg.h
new file mode 100644
index 000000000..09e21e84f
--- /dev/null
+++ b/drivers/usb/serial/keyspan_usa26msg.h
@@ -0,0 +1,260 @@
+/*
+	usa26msg.h
+
+	Copyright (C) 1998-2000 InnoSys Incorporated.  All Rights Reserved
+	This file is available under a BSD-style copyright
+
+	Keyspan USB Async Message Formats for the USA28X
+
+	Redistribution and use in source and binary forms, with or without
+	modification, are permitted provided that the following conditions are
+	met:
+
+	1. Redistributions of source code must retain this licence text
+   	without modification, this list of conditions, and the following
+   	disclaimer.  The following copyright notice must appear immediately at
+   	the beginning of all source files:
+
+        	Copyright (C) 1998-2000 InnoSys Incorporated.  All Rights Reserved
+
+        	This file is available under a BSD-style copyright
+
+	2. The name of InnoSys Incorporated may not be used to endorse or promote
+   	products derived from this software without specific prior written
+   	permission.
+
+	THIS SOFTWARE IS PROVIDED BY INNOSYS CORP. ``AS IS'' AND ANY EXPRESS OR
+	IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+	OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+	NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+	INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+	(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+	SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+	CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+	LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+	OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+	SUCH DAMAGE.    
+
+	Third revision: USA28X version (aka USA26)
+
+	Buffer formats for RX/TX data messages are not defined by
+	a structure, but are described here:
+
+	USB OUT (host -> USAxx, transmit) messages contain a 
+	REQUEST_ACK indicator (set to 0xff to request an ACK at the 
+	completion of transmit; 0x00 otherwise), followed by data:
+
+		RQSTACK DAT DAT DAT ...
+
+	with a total data length of 63.
+
+	USB IN (USAxx -> host, receive) messages begin with a status
+	byte in which the 0x80 bit is either:
+
+		(a)	0x80 bit clear
+			indicates that the bytes following it are all data
+			bytes:
+
+				STAT DATA DATA DATA DATA DATA ...
+
+			for a total of up to 63 DATA bytes,
+
+	or:
+
+		(b)	0x80 bit set
+			indicates that the bytes following alternate data and
+			status bytes:
+
+				STAT DATA STAT DATA STAT DATA STAT DATA ...
+
+			for a total of up to 32 DATA bytes.
+
+	The valid bits in the STAT bytes are:
+
+		OVERRUN	0x02
+		PARITY	0x04
+		FRAMING	0x08
+		BREAK	0x10
+
+	Notes:
+
+	(1) The OVERRUN bit can appear in either (a) or (b) format
+		messages, but the but the PARITY/FRAMING/BREAK bits
+		only appear in (b) format messages.
+	(2) For the host to determine the exact point at which the
+		overrun occurred (to identify the point in the data
+		stream at which the data was lost), it needs to count
+		128 characters, starting at the first character of the
+		message in which OVERRUN was reported; the lost character(s)
+		would have been received between the 128th and 129th
+		characters.
+	(3)	An RX data message in which the first byte has 0x80 clear
+		serves as a "break off" indicator.
+
+	revision history:
+
+	1999feb10	add reportHskiaChanges to allow us to ignore them
+	1999feb10	add txAckThreshold for fast+loose throughput enhancement
+	1999mar30	beef up support for RX error reporting
+	1999apr14	add resetDataToggle to control message
+	2000jan04	merge with usa17msg.h
+	2000jun01	add extended BSD-style copyright text
+	2001jul05	change message format to improve OVERRUN case
+
+	Note on shared names:
+
+	In the case of fields which have been merged between the USA17
+	and USA26 definitions, the USA26 definition is the first part
+	of the name and the USA17 definition is the second part of the
+	name; both meanings are described below.
+*/
+
+#ifndef	__USA26MSG__
+#define	__USA26MSG__
+
+
+struct keyspan_usa26_portControlMessage
+{
+	/*
+		there are three types of "commands" sent in the control message:
+
+		1.	configuration changes which must be requested by setting
+			the corresponding "set" flag (and should only be requested
+			when necessary, to reduce overhead on the USA26):
+	*/
+	u8	setClocking,	// BOTH: host requests baud rate be set
+		baudLo,		// BOTH: host does baud divisor calculation
+		baudHi,		// BOTH: baudHi is only used for first port (gives lower rates)
+		externalClock_txClocking,
+					// USA26: 0=internal, other=external
+					// USA17: 0=internal, other=external/RI
+		rxClocking,		// USA17: 0=internal, 1=external/RI, other=external/DSR
+
+
+		setLcr,			// BOTH: host requests lcr be set
+		lcr,			// BOTH: use PARITY, STOPBITS, DATABITS below
+
+		setFlowControl,		// BOTH: host requests flow control be set
+		ctsFlowControl,		// BOTH: 1=use CTS flow control, 0=don't
+		xonFlowControl,		// BOTH: 1=use XON/XOFF flow control, 0=don't
+		xonChar,		// BOTH: specified in current character format
+		xoffChar,		// BOTH: specified in current character format
+
+		setTxTriState_setRts,
+					// USA26: host requests TX tri-state be set
+					// USA17: host requests RTS output be set
+		txTriState_rts,		// BOTH: 1=active (normal), 0=tristate (off)
+
+		setHskoa_setDtr,
+					// USA26: host requests HSKOA output be set
+					// USA17: host requests DTR output be set
+		hskoa_dtr,		// BOTH: 1=on, 0=off
+
+		setPrescaler,		// USA26: host requests prescalar be set (default: 13)
+		prescaler;		// BOTH: specified as N/8; values 8-ff are valid
+					// must be set any time internal baud rate is set;
+					// must not be set when external clocking is used
+					// note: in USA17, prescaler is applied whenever
+					// setClocking is requested
+
+	/*
+		3.	configuration data which is simply used as is (no overhead,
+			but must be specified correctly in every host message).
+	*/
+	u8	forwardingLength,  // BOTH: forward when this number of chars available
+		reportHskiaChanges_dsrFlowControl,
+						// USA26: 1=normal; 0=ignore external clock
+						// USA17: 1=use DSR flow control, 0=don't
+		txAckThreshold,	// BOTH: 0=not allowed, 1=normal, 2-255 deliver ACK faster
+		loopbackMode;	// BOTH: 0=no loopback, 1=loopback enabled
+
+	/*
+		4.	commands which are flags only; these are processed in order
+			(so that, e.g., if both _txOn and _txOff flags are set, the
+			port ends in a TX_OFF state); any non-zero value is respected
+	*/
+	u8	_txOn,			// BOTH: enable transmitting (and continue if there's data)
+		_txOff,			// BOTH: stop transmitting
+		txFlush,		// BOTH: toss outbound data
+		txBreak,		// BOTH: turn on break (cleared by _txOn)
+		rxOn,			// BOTH: turn on receiver
+		rxOff,			// BOTH: turn off receiver
+		rxFlush,		// BOTH: toss inbound data
+		rxForward,		// BOTH: forward all inbound data, NOW (as if fwdLen==1)
+		returnStatus,	// BOTH: return current status (even if it hasn't changed)
+		resetDataToggle;// BOTH: reset data toggle state to DATA0
+	
+};
+
+// defines for bits in lcr
+#define	USA_DATABITS_5		0x00
+#define	USA_DATABITS_6		0x01
+#define	USA_DATABITS_7		0x02
+#define	USA_DATABITS_8		0x03
+#define	STOPBITS_5678_1	0x00	// 1 stop bit for all byte sizes
+#define	STOPBITS_5_1p5	0x04	// 1.5 stop bits for 5-bit byte
+#define	STOPBITS_678_2	0x04	// 2 stop bits for 6/7/8-bit byte
+#define	USA_PARITY_NONE		0x00
+#define	USA_PARITY_ODD		0x08
+#define	USA_PARITY_EVEN		0x18
+#define	PARITY_1		0x28
+#define	PARITY_0		0x38
+
+// all things called "StatusMessage" are sent on the status endpoint
+
+struct keyspan_usa26_portStatusMessage	// one for each port
+{
+	u8	port,			// BOTH: 0=first, 1=second, other=see below
+		hskia_cts,		// USA26: reports HSKIA pin
+						// USA17: reports CTS pin
+		gpia_dcd,		// USA26: reports GPIA pin
+						// USA17: reports DCD pin
+		dsr,			// USA17: reports DSR pin
+		ri,				// USA17: reports RI pin
+		_txOff,			// port has been disabled (by host)
+		_txXoff,		// port is in XOFF state (either host or RX XOFF)
+		rxEnabled,		// as configured by rxOn/rxOff 1=on, 0=off
+		controlResponse;// 1=a control message has been processed
+};
+
+// bits in RX data message when STAT byte is included
+#define	RXERROR_OVERRUN	0x02
+#define	RXERROR_PARITY	0x04
+#define	RXERROR_FRAMING	0x08
+#define	RXERROR_BREAK	0x10
+
+struct keyspan_usa26_globalControlMessage
+{
+	u8	sendGlobalStatus,	// 2=request for two status responses
+		resetStatusToggle,	// 1=reset global status toggle
+		resetStatusCount;	// a cycling value
+};
+
+struct keyspan_usa26_globalStatusMessage
+{
+	u8	port,				// 3
+		sendGlobalStatus,	// from request, decremented
+		resetStatusCount;	// as in request
+};
+
+struct keyspan_usa26_globalDebugMessage
+{
+	u8	port,				// 2
+		a,
+		b,
+		c,
+		d;
+};
+
+// ie: the maximum length of an EZUSB endpoint buffer
+#define	MAX_DATA_LEN			64
+
+// update status approx. 60 times a second (16.6666 ms)
+#define	STATUS_UPDATE_INTERVAL	16
+
+// status rationing tuning value (each port gets checked each n ms)
+#define	STATUS_RATION	10
+
+#endif
+
+