patch-2.3.99-pre4 linux/drivers/usb/serial/whiteheat.c

• Lines: 252
• Date: Mon Apr 10 22:54:09 2000
• Orig file: v2.3.99-pre3/linux/drivers/usb/serial/whiteheat.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.99-pre3/linux/drivers/usb/serial/whiteheat.c linux/drivers/usb/serial/whiteheat.c
@@ -0,0 +1,251 @@
+/*
+ * USB ConnectTech WhiteHEAT driver
+ *
+ *	(C) Copyright (C) 1999, 2000
+ *	    Greg Kroah-Hartman (greg@kroah.com)
+ *
+ *	This program is free software; you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation; either version 2 of the License, or
+ *	(at your option) any later version.
+ *
+ * See Documentation/usb/usb-serial.txt for more information on using this driver
+ * 
+ * (03/26/2000) gkh
+ *	Split driver up into device specific pieces.
+ * 
+ */
+
+#include <linux/config.h>
+
+#ifdef CONFIG_USB_SERIAL_WHITEHEAT
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/signal.h>
+#include <linux/errno.h>
+#include <linux/poll.h>
+#include <linux/init.h>
+#include <linux/malloc.h>
+#include <linux/fcntl.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include <linux/tty.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+
+#ifdef CONFIG_USB_SERIAL_DEBUG
+	#define DEBUG
+#else
+	#undef DEBUG
+#endif
+#include <linux/usb.h>
+
+#include "usb-serial.h"
+
+#include "whiteheat_fw.h"		/* firmware for the ConnectTech WhiteHEAT device */
+
+
+#define CONNECT_TECH_VENDOR_ID		0x0710
+#define CONNECT_TECH_FAKE_WHITE_HEAT_ID	0x0001
+#define CONNECT_TECH_WHITE_HEAT_ID	0x8001
+
+/* function prototypes for the Connect Tech WhiteHEAT serial converter */
+static int  whiteheat_open		(struct usb_serial_port *port, struct file *filp);
+static void whiteheat_close		(struct usb_serial_port *port, struct file *filp);
+static void whiteheat_set_termios	(struct usb_serial_port *port, struct termios * old);
+static void whiteheat_throttle		(struct usb_serial_port *port);
+static void whiteheat_unthrottle	(struct usb_serial_port *port);
+static int  whiteheat_startup		(struct usb_serial *serial);
+
+/* All of the device info needed for the Connect Tech WhiteHEAT */
+static __u16	connecttech_vendor_id			= CONNECT_TECH_VENDOR_ID;
+static __u16	connecttech_whiteheat_fake_product_id	= CONNECT_TECH_FAKE_WHITE_HEAT_ID;
+static __u16	connecttech_whiteheat_product_id	= CONNECT_TECH_WHITE_HEAT_ID;
+struct usb_serial_device_type whiteheat_fake_device = {
+	name:			"Connect Tech - WhiteHEAT - (prerenumeration)",
+	idVendor:		&connecttech_vendor_id,			/* the Connect Tech vendor id */
+	idProduct:		&connecttech_whiteheat_fake_product_id,	/* the White Heat initial product id */
+	needs_interrupt_in:	DONT_CARE,				/* don't have to have an interrupt in endpoint */
+	needs_bulk_in:		DONT_CARE,				/* don't have to have a bulk in endpoint */
+	needs_bulk_out:		DONT_CARE,				/* don't have to have a bulk out endpoint */
+	num_interrupt_in:	NUM_DONT_CARE,
+	num_bulk_in:		NUM_DONT_CARE,
+	num_bulk_out:		NUM_DONT_CARE,
+	num_ports:		1,
+	startup:		whiteheat_startup	
+};
+struct usb_serial_device_type whiteheat_device = {
+	name:			"Connect Tech - WhiteHEAT",
+	idVendor:		&connecttech_vendor_id,			/* the Connect Tech vendor id */
+	idProduct:		&connecttech_whiteheat_product_id,	/* the White Heat real product id */
+	needs_interrupt_in:	DONT_CARE,				/* don't have to have an interrupt in endpoint */
+	needs_bulk_in:		DONT_CARE,				/* don't have to have a bulk in endpoint */
+	needs_bulk_out:		DONT_CARE,				/* don't have to have a bulk out endpoint */
+	num_interrupt_in:	NUM_DONT_CARE,
+	num_bulk_in:		NUM_DONT_CARE,
+	num_bulk_out:		NUM_DONT_CARE,
+	num_ports:		4,
+	open:			whiteheat_open,
+	close:			whiteheat_close,
+	throttle:		whiteheat_throttle,
+	unthrottle:		whiteheat_unthrottle,
+	set_termios:		whiteheat_set_termios,
+};
+
+
+/*****************************************************************************
+ * Connect Tech's White Heat specific driver functions
+ *****************************************************************************/
+static int whiteheat_open (struct usb_serial_port *port, struct file *filp)
+{
+	dbg("whiteheat_open port %d", port->number);
+
+	if (port->active) {
+		dbg ("device already open");
+		return -EINVAL;
+	}
+	port->active = 1;
+ 
+	/*Start reading from the device*/
+	if (usb_submit_urb(port->read_urb))
+		dbg("usb_submit_urb(read bulk) failed");
+
+	/* Need to do device specific setup here (control lines, baud rate, etc.) */
+	/* FIXME!!! */
+
+	return (0);
+}
+
+
+static void whiteheat_close(struct usb_serial_port *port, struct file * filp)
+{
+	dbg("whiteheat_close port %d", port->number);
+	
+	/* Need to change the control lines here */
+	/* FIXME */
+	
+	/* shutdown our bulk reads and writes */
+	usb_unlink_urb (port->write_urb);
+	usb_unlink_urb (port->read_urb);
+	port->active = 0;
+}
+
+
+static void whiteheat_set_termios (struct usb_serial_port *port, struct termios *old_termios)
+{
+	unsigned int cflag = port->tty->termios->c_cflag;
+
+	dbg("whiteheat_set_termios port %d", port->number);
+
+	/* check that they really want us to change something */
+	if (old_termios) {
+		if ((cflag == old_termios->c_cflag) &&
+		    (RELEVANT_IFLAG(port->tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) {
+			dbg("nothing to change...");
+			return;
+		}
+	}
+
+	/* do the parsing of the cflag to see what to set the line to */
+	/* FIXME!! */
+
+	return;
+}
+
+static void whiteheat_throttle (struct usb_serial_port *port)
+{
+	dbg("whiteheat_throttle port %d", port->number);
+
+	/* Change the control signals */
+	/* FIXME!!! */
+
+	return;
+}
+
+
+static void whiteheat_unthrottle (struct usb_serial_port *port)
+{
+	dbg("whiteheat_unthrottle port %d", port->number);
+
+	/* Change the control signals */
+	/* FIXME!!! */
+
+	return;
+}
+
+
+/* steps to download the firmware to the WhiteHEAT device:
+ - hold the reset (by writing to the reset bit of the CPUCS register)
+ - download the VEND_AX.HEX file to the chip using VENDOR_REQUEST-ANCHOR_LOAD
+ - release the reset (by writing to the CPUCS register)
+ - download the WH.HEX file for all addresses greater than 0x1b3f using
+   VENDOR_REQUEST-ANCHOR_EXTERNAL_RAM_LOAD
+ - hold the reset
+ - download the WH.HEX file for all addresses less than 0x1b40 using
+   VENDOR_REQUEST_ANCHOR_LOAD
+ - release the reset
+ - device renumerated itself and comes up as new device id with all
+   firmware download completed.
+*/
+static int  whiteheat_startup (struct usb_serial *serial)
+{
+	int response;
+	const struct whiteheat_hex_record *record;
+	
+	dbg("whiteheat_startup");
+	
+	response = ezusb_set_reset (serial, 1);
+
+	record = &whiteheat_loader[0];
+	while (record->address != 0xffff) {
+		response = ezusb_writememory (serial, record->address, 
+				(unsigned char *)record->data, record->data_size, 0xa0);
+		if (response < 0) {
+			err("ezusb_writememory failed for loader (%d %04X %p %d)", 
+				response, record->address, record->data, record->data_size);
+			break;
+		}
+		++record;
+	}
+
+	response = ezusb_set_reset (serial, 0);
+
+	record = &whiteheat_firmware[0];
+	while (record->address < 0x1b40) {
+		++record;
+	}
+	while (record->address != 0xffff) {
+		response = ezusb_writememory (serial, record->address, 
+				(unsigned char *)record->data, record->data_size, 0xa3);
+		if (response < 0) {
+			err("ezusb_writememory failed for first firmware step (%d %04X %p %d)", 
+				response, record->address, record->data, record->data_size);
+			break;
+		}
+		++record;
+	}
+	
+	response = ezusb_set_reset (serial, 1);
+
+	record = &whiteheat_firmware[0];
+	while (record->address < 0x1b40) {
+		response = ezusb_writememory (serial, record->address, 
+				(unsigned char *)record->data, record->data_size, 0xa0);
+		if (response < 0) {
+			err("ezusb_writememory failed for second firmware step (%d %04X %p %d)", 
+				response, record->address, record->data, record->data_size);
+			break;
+		}
+		++record;
+	}
+
+	response = ezusb_set_reset (serial, 0);
+
+	/* we want this device to fail to have a driver assigned to it. */
+	return (1);
+}
+
+#endif	/* CONFIG_USB_SERIAL_WHITEHEAT */
+
+