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/*
* 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 */
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