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/*
* USB HandSpring Visor driver
*
* 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
*
* (04/27/2000) Ryan VanderBijl
* Fixed memory leak in visor_close
*
* (03/26/2000) gkh
* Split driver up into device specific pieces.
*
*/
#include <linux/config.h>
#ifdef CONFIG_USB_SERIAL_VISOR
#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 "visor.h"
/* function prototypes for a handspring visor */
static int visor_open (struct usb_serial_port *port, struct file *filp);
static void visor_close (struct usb_serial_port *port, struct file *filp);
static void visor_throttle (struct usb_serial_port *port);
static void visor_unthrottle (struct usb_serial_port *port);
static int visor_startup (struct usb_serial *serial);
/* All of the device info needed for the Handspring Visor */
static __u16 handspring_vendor_id = HANDSPRING_VENDOR_ID;
static __u16 handspring_product_id = HANDSPRING_VISOR_ID;
struct usb_serial_device_type handspring_device = {
name: "Handspring Visor",
idVendor: &handspring_vendor_id, /* the Handspring vendor ID */
idProduct: &handspring_product_id, /* the Handspring Visor product id */
needs_interrupt_in: MUST_HAVE_NOT, /* this device must not have an interrupt in endpoint */
needs_bulk_in: MUST_HAVE, /* this device must have a bulk in endpoint */
needs_bulk_out: MUST_HAVE, /* this device must have a bulk out endpoint */
num_interrupt_in: 0,
num_bulk_in: 2,
num_bulk_out: 2,
num_ports: 2,
open: visor_open,
close: visor_close,
throttle: visor_throttle,
unthrottle: visor_unthrottle,
startup: visor_startup,
};
/******************************************************************************
* Handspring Visor specific driver functions
******************************************************************************/
static int visor_open (struct usb_serial_port *port, struct file *filp)
{
dbg("visor_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");
return (0);
}
static void visor_close (struct usb_serial_port *port, struct file * filp)
{
struct usb_serial *serial = port->serial;
unsigned char *transfer_buffer = kmalloc (0x12, GFP_KERNEL);
dbg("visor_close port %d", port->number);
if (!transfer_buffer) {
err("visor_close: kmalloc(%d) failed.", 0x12);
} else {
/* send a shutdown message to the device */
usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), VISOR_CLOSE_NOTIFICATION,
0xc2, 0x0000, 0x0000, transfer_buffer, 0x12, 300);
kfree (transfer_buffer);
}
/* shutdown our bulk reads and writes */
usb_unlink_urb (port->write_urb);
usb_unlink_urb (port->read_urb);
port->active = 0;
}
static void visor_throttle (struct usb_serial_port *port)
{
dbg("visor_throttle port %d", port->number);
usb_unlink_urb (port->read_urb);
return;
}
static void visor_unthrottle (struct usb_serial_port *port)
{
dbg("visor_unthrottle port %d", port->number);
if (usb_unlink_urb (port->read_urb))
dbg("usb_submit_urb(read bulk) failed");
return;
}
static int visor_startup (struct usb_serial *serial)
{
int response;
int i;
unsigned char *transfer_buffer = kmalloc (256, GFP_KERNEL);
if (!transfer_buffer) {
err("visor_startup: kmalloc(%d) failed.", 256);
return -ENOMEM;
}
dbg("visor_startup");
dbg("visor_setup: Set config to 1");
usb_set_configuration (serial->dev, 1);
/* send a get connection info request */
response = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), VISOR_GET_CONNECTION_INFORMATION,
0xc2, 0x0000, 0x0000, transfer_buffer, 0x12, 300);
if (response < 0) {
err("visor_startup: error getting connection information");
} else {
struct visor_connection_info *connection_info = (struct visor_connection_info *)transfer_buffer;
char *string;
info("%s: Number of ports: %d", serial->type->name, connection_info->num_ports);
for (i = 0; i < connection_info->num_ports; ++i) {
switch (connection_info->connections[i].port_function_id) {
case VISOR_FUNCTION_GENERIC:
string = "Generic";
break;
case VISOR_FUNCTION_DEBUGGER:
string = "Debugger";
break;
case VISOR_FUNCTION_HOTSYNC:
string = "HotSync";
break;
case VISOR_FUNCTION_CONSOLE:
string = "Console";
break;
case VISOR_FUNCTION_REMOTE_FILE_SYS:
string = "Remote File System";
break;
default:
string = "unknown";
break;
}
info("%s: port %d, is for %s use and is bound to ttyUSB%d", serial->type->name, connection_info->connections[i].port, string, serial->minor + i);
}
}
/* ask for the number of bytes available, but ignore the response as it is broken */
response = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), VISOR_REQUEST_BYTES_AVAILABLE,
0xc2, 0x0000, 0x0005, transfer_buffer, 0x02, 300);
if (response < 0) {
err("visor_startup: error getting bytes available request");
}
kfree (transfer_buffer);
/* continue on with initialization */
return (0);
}
#endif /* CONFIG_USB_SERIAL_VISOR*/
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