path: root/drivers/usb/serial/iuu_phoenix.c

/*
 * Infinity Unlimited USB Phoenix driver
 *
 * Copyright (C) 2007 Alain Degreffe (eczema@ecze.com)
 *
 * Original code taken from iuutool (Copyright (C) 2006 Juan Carlos Borrás)
 *
 *	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.
 *
 *  And tested with help of WB Electronics
 *
 */
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/serial.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/spinlock.h>
#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
#include "iuu_phoenix.h"
#include <linux/random.h>


#ifdef CONFIG_USB_SERIAL_DEBUG
static int debug = 1;
#else
static int debug;
#endif

/*
 * Version Information
 */
#define DRIVER_VERSION "v0.5"
#define DRIVER_DESC "Infinity USB Unlimited Phoenix driver"

static struct usb_device_id id_table[] = {
	{USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)},
	{}			/* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, id_table);

static struct usb_driver iuu_driver = {
	.name = "iuu_phoenix",
	.probe = usb_serial_probe,
	.disconnect = usb_serial_disconnect,
	.id_table = id_table,
	.no_dynamic_id = 1,
};

/* turbo parameter */
static int boost = 100;
static int clockmode = 1;
static int cdmode = 1;
static int iuu_cardin;
static int iuu_cardout;
static int xmas;

static void read_rxcmd_callback(struct urb *urb);

struct iuu_private {
	spinlock_t lock;	/* store irq state */
	wait_queue_head_t delta_msr_wait;
	u8 line_control;
	u8 line_status;
	u8 termios_initialized;
	int tiostatus;		/* store IUART SIGNAL for tiocmget call */
	u8 reset;		/* if 1 reset is needed */
	int poll;		/* number of poll */
	u8 *writebuf;		/* buffer for writing to device */
	int writelen;		/* num of byte to write to device */
	u8 *buf;		/* used for initialize speed */
	u8 *dbgbuf;		/* debug buffer */
	u8 len;
};


static void iuu_free_buf(struct iuu_private *priv)
{
	kfree(priv->buf);
	kfree(priv->dbgbuf);
	kfree(priv->writebuf);
}

static int iuu_alloc_buf(struct iuu_private *priv)
{
	priv->buf = kzalloc(256, GFP_KERNEL);
	priv->dbgbuf = kzalloc(256, GFP_KERNEL);
	priv->writebuf = kzalloc(256, GFP_KERNEL);
	if (!priv->buf || !priv->dbgbuf || !priv->writebuf) {
		iuu_free_buf(priv);
		dbg("%s problem allocation buffer", __func__);
		return -ENOMEM;
	}
	dbg("%s - Privates buffers allocation success", __func__);
	return 0;
}

static int iuu_startup(struct usb_serial *serial)
{
	struct iuu_private *priv;
	priv = kzalloc(