USB: add iuu_phoenix driver

Signed-off-by: Alain Degreffe <eczema@ecze.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1217 insertions, 0 deletions

diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c
new file mode 100644
index 000000000000..fde188e23ce1
--- /dev/null
+++ b/drivers/usb/serial/iuu_phoenix.c
@@ -0,0 +1,1217 @@
+/*
+ * 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", __FUNCTION__);
+		return -ENOMEM;
+	}
+	dbg("%s - Privates buffers allocation success", __FUNCTION__);
+	return 0;
+}
+
+static int iuu_startup(struct usb_serial *serial)
+{
+	struct iuu_private *priv;
+	priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL);
+	dbg("%s- priv allocation success", __FUNCTION__);
+	if (!priv)
+		return -ENOMEM;
+	if (iuu_alloc_buf(priv)) {
+		kfree(priv);
+		return -ENOMEM;
+	}
+	spin_lock_init(&priv->lock);
+	init_waitqueue_head(&priv->delta_msr_wait);
+	usb_set_serial_port_data(serial->port[0], priv);
+	return 0;
+}
+
+/* Shutdown function */
+static void iuu_shutdown(struct usb_serial *serial)
+{
+	struct usb_serial_port *port = serial->port[0];
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+	if (!port)
+		return;
+
+	dbg("%s", __FUNCTION__);
+
+	if (priv) {
+		iuu_free_buf(priv);
+		dbg("%s - I will free all", __FUNCTION__);
+		usb_set_serial_port_data(port, NULL);
+
+		dbg("%s - priv is not anymore in port structure", __FUNCTION__);
+		kfree(priv);
+
+		dbg("%s priv is now kfree", __FUNCTION__);
+	}
+}
+
+static int iuu_tiocmset(struct usb_serial_port *port, struct file *file,
+			unsigned int set, unsigned int clear)
+{
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+	struct tty_struct *tty;
+	tty = port->tty;
+
+	dbg("%s (%d) msg : SET = 0x%04x, CLEAR = 0x%04x ", __FUNCTION__,
+	    port->number, set, clear);
+	if (set & TIOCM_RTS)
+		priv->tiostatus = TIOCM_RTS;
+
+	if (!(set & TIOCM_RTS) && priv->tiostatus == TIOCM_RTS) {
+		dbg("%s TIOCMSET RESET called !!!", __FUNCTION__);
+		priv->reset = 1;
+		return 0;
+	}
+
+	return 0;
+}
+
+/* This is used to provide a carrier detect mechanism
+ * When a card is present, the response is 0x00
+ * When no card , the reader respond with TIOCM_CD
+ * This is known as CD autodetect mechanism
+ */
+static int iuu_tiocmget(struct usb_serial_port *port, struct file *file)
+{
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+	return priv->tiostatus;
+}
+
+static void iuu_rxcmd(struct urb *urb)
+{
+	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	int result;
+	dbg("%s - enter", __FUNCTION__);
+
+	if (urb->status) {
+		dbg("%s - urb->status = %d", __FUNCTION__, urb->status);
+		/* error stop all */
+		return;
+	}
+
+
+	memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
+	usb_fill_bulk_urb(port->write_urb, port->serial->dev,
+			  usb_sndbulkpipe(port->serial->dev,
+					  port->bulk_out_endpointAddress),
+			  port->write_urb->transfer_buffer, 1,
+			  read_rxcmd_callback, port);
+	result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
+}
+
+static int iuu_reset(struct usb_serial_port *port, u8 wt)
+{
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+	int result;
+	char *buf_ptr = port->write_urb->transfer_buffer;
+	dbg("%s - enter", __FUNCTION__);
+
+	/* Prepare the reset sequence */
+
+	*buf_ptr++ = IUU_RST_SET;
+	*buf_ptr++ = IUU_DELAY_MS;
+	*buf_ptr++ = wt;
+	*buf_ptr = IUU_RST_CLEAR;
+
+	/* send the sequence */
+
+	usb_fill_bulk_urb(port->write_urb,
+			  port->serial->dev,
+			  usb_sndbulkpipe(port->serial->dev,
+					  port->bulk_out_endpointAddress),
+			  port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
+	result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
+	priv->reset = 0;
+	return result;
+}
+
+/* Status Function
+ * Return value is
+ * 0x00 = no card
+ * 0x01 = smartcard
+ * 0x02 = sim card
+ */
+static void iuu_update_status_callback(struct urb *urb)
+{
+	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+	u8 *st;
+	dbg("%s - enter", __FUNCTION__);
+
+	if (urb->status) {
+		dbg("%s - urb->status = %d", __FUNCTION__, urb->status);
+		/* error stop all */
+		return;
+	}
+
+	st = urb->transfer_buffer;
+	dbg("%s - enter", __FUNCTION__);
+	if (urb->actual_length == 1) {
+		switch (st[0]) {
+		case 0x1:
+			priv->tiostatus = iuu_cardout;
+			break;
+		case 0x0:
+			priv->tiostatus = iuu_cardin;
+			break;
+		default:
+			priv->tiostatus = iuu_cardin;
+		}
+	}
+	iuu_rxcmd(urb);
+}
+
+static void iuu_status_callback(struct urb *urb)
+{
+	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	int result;
+	dbg("%s - enter", __FUNCTION__);
+
+	dbg("%s - urb->status = %d", __FUNCTION__, urb->status);
+	usb_fill_bulk_urb(port->read_urb, port->serial->dev,
+			  usb_rcvbulkpipe(port->serial->dev,
+					  port->bulk_in_endpointAddress),
+			  port->read_urb->transfer_buffer, 256,
+			  iuu_update_status_callback, port);
+	result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
+}
+
+static int iuu_status(struct usb_serial_port *port)
+{
+	int result;
+
+	dbg("%s - enter", __FUNCTION__);
+
+	memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
+	usb_fill_bulk_urb(port->write_urb, port->serial->dev,
+			  usb_sndbulkpipe(port->serial->dev,
+					  port->bulk_out_endpointAddress),
+			  port->write_urb->transfer_buffer, 1,
+			  iuu_status_callback, port);
+	result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
+	return result;
+
+}
+
+static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
+{
+	int status;
+	struct usb_serial *serial = port->serial;
+	int actual = 0;
+
+	dbg("%s - enter", __FUNCTION__);
+
+	/* send the data out the bulk port */
+
+	status =
+	    usb_bulk_msg(serial->dev,
+			 usb_sndbulkpipe(serial->dev,
+					 port->bulk_out_endpointAddress), buf,
+			 count, &actual, HZ * 1);
+
+	if (status != IUU_OPERATION_OK) {
+		dbg("%s - error = %2x", __FUNCTION__, status);
+	} else {
+		dbg("%s - write OK !", __FUNCTION__);
+	}
+	return status;
+}
+
+static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
+{
+	int status;
+	struct usb_serial *serial = port->serial;
+	int actual = 0;
+
+	dbg("%s - enter", __FUNCTION__);
+
+	/* send the data out the bulk port */
+
+	status =
+	    usb_bulk_msg(serial->dev,
+			 usb_rcvbulkpipe(serial->dev,
+					 port->bulk_in_endpointAddress), buf,
+			 count, &actual, HZ * 1);
+
+	if (status != IUU_OPERATION_OK) {
+		dbg("%s - error = %2x", __FUNCTION__, status);
+	} else {
+		dbg("%s - read OK !", __FUNCTION__);
+	}
+
+	return status;
+}
+
+static int iuu_led(struct usb_serial_port *port, unsigned int R,
+		   unsigned int G, unsigned int B, u8 f)
+{
+	int status;
+	u8 *buf;
+	buf = kmalloc(8, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	dbg("%s - enter", __FUNCTION__);
+
+	buf[0] = IUU_SET_LED;
+	buf[1] = R & 0xFF;
+	buf[2] = (R >> 8) & 0xFF;
+	buf[3] = G & 0xFF;
+	buf[4] = (G >> 8) & 0xFF;
+	buf[5] = B & 0xFF;
+	buf[6] = (B >> 8) & 0xFF;
+	buf[7] = f;
+	status = bulk_immediate(port, buf, 8);
+	kfree(buf);
+	if (status != IUU_OPERATION_OK)
+		dbg("%s - led error status = %2x", __FUNCTION__, status);
+	else
+		dbg("%s - led OK !", __FUNCTION__);
+	return IUU_OPERATION_OK;
+}
+
+static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
+				 u8 b2, u8 freq)
+{
+	*buf++ = IUU_SET_LED;
+	*buf++ = r1;
+	*buf++ = r2;
+	*buf++ = g1;
+	*buf++ = g2;
+	*buf++ = b1;
+	*buf++ = b2;
+	*buf = freq;
+}
+
+static void iuu_led_activity_on(struct urb *urb)
+{
+	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	int result;
+	char *buf_ptr = port->write_urb->transfer_buffer;
+	*buf_ptr++ = IUU_SET_LED;
+	if (xmas == 1) {
+		get_random_bytes(buf_ptr, 6);
+		*(buf_ptr+7) = 1;
+	} else {
+		iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
+	}
+
+	usb_fill_bulk_urb(port->write_urb, port->serial->dev,
+			  usb_sndbulkpipe(port->serial->dev,
+					  port->bulk_out_endpointAddress),
+			  port->write_urb->transfer_buffer, 8 ,
+			  iuu_rxcmd, port);
+	result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
+}
+
+static void iuu_led_activity_off(struct urb *urb)
+{
+	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	int result;
+	char *buf_ptr = port->write_urb->transfer_buffer;
+	if (xmas == 1) {
+		iuu_rxcmd(urb);
+		return;
+	} else {
+		*buf_ptr++ = IUU_SET_LED;
+		iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
+	}
+	usb_fill_bulk_urb(port->write_urb, port->serial->dev,
+			  usb_sndbulkpipe(port->serial->dev,
+					  port->bulk_out_endpointAddress),
+			  port->write_urb->transfer_buffer, 8 ,
+			  iuu_rxcmd, port);
+	result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
+}
+
+
+
+static int iuu_clk(struct usb_serial_port *port, int dwFrq)
+{
+	int status;
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+	int Count = 0;
+	u8 FrqGenAdr = 0x69;
+	u8 DIV = 0;		/* 8bit */
+	u8 XDRV = 0;		/* 8bit */
+	u8 PUMP = 0;		/* 3bit */
+	u8 PBmsb = 0;		/* 2bit */
+	u8 PBlsb = 0;		/* 8bit */
+	u8 PO = 0;		/* 1bit */
+	u8 Q = 0;		/* 7bit */
+	/* 24bit = 3bytes */
+	unsigned int P = 0;
+	unsigned int P2 = 0;
+	int frq = (int)dwFrq;
+
+	dbg("%s - enter", __FUNCTION__);
+
+	if (frq == 0) {
+		priv->buf[Count++] = IUU_UART_WRITE_I2C;
+		priv->buf[Count++] = FrqGenAdr << 1;
+		priv->buf[Count++] = 0x09;
+		priv->buf[Count++] = 0x00;
+
+		status = bulk_immediate(port, (u8 *) priv->buf, Count);
+		if (status != 0) {
+			dbg("%s - write error ", __FUNCTION__);
+			return status;
+		}
+	} else if (frq == 3579000) {
+		DIV = 100;
+		P = 1193;
+		Q = 40;
+		XDRV = 0;
+	} else if (frq == 3680000) {
+		DIV = 105;
+		P = 161;
+		Q = 5;
+		XDRV = 0;
+	} else if (frq == 6000000) {
+		DIV = 66;
+		P = 66;
+		Q = 2;
+		XDRV = 0x28;
+	} else {
+		unsigned int result = 0;
+		unsigned int tmp = 0;
+		unsigned int check;
+		unsigned int check2;
+		char found = 0x00;
+		unsigned int lQ = 2;
+		unsigned int lP = 2055;
+		unsigned int lDiv = 4;
+
+		for (lQ = 2; lQ <= 47 && !found; lQ++)
+			for (lP = 2055; lP >= 8 && !found; lP--)
+				for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
+					tmp = (12000000 / lDiv) * (lP / lQ);
+					if (abs((int)(tmp - frq)) <
+					    abs((int)(frq - result))) {
+						check2 = (12000000 / lQ);
+						if (check2 < 250000)
+							continue;
+						check = (12000000 / lQ) * lP;
+						if (check > 400000000)
+							continue;
+						if (check < 100000000)
+							continue;
+						if (lDiv < 4 || lDiv > 127)
+							continue;
+						result = tmp;
+						P = lP;
+						DIV = lDiv;
+						Q = lQ;
+						if (result == frq)
+							found = 0x01;
+					}
+				}
+	}
+	P2 = ((P - PO) / 2) - 4;
+	DIV = DIV;
+	PUMP = 0x04;
+	PBmsb = (P2 >> 8 & 0x03);
+	PBlsb = P2 & 0xFF;
+	PO = (P >> 10) & 0x01;
+	Q = Q - 2;
+
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/* 0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x09;
+	priv->buf[Count++] = 0x20;	/* Adr = 0x09 */
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/* 0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x0C;
+	priv->buf[Count++] = DIV;	/* Adr = 0x0C */
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/* 0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x12;
+	priv->buf[Count++] = XDRV;	/* Adr = 0x12 */
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x13;
+	priv->buf[Count++] = 0x6B;	/* Adr = 0x13 */
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x40;
+	priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) |
+			     (PBmsb & 0x03);	/* Adr = 0x40 */
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x41;
+	priv->buf[Count++] = PBlsb;	/* Adr = 0x41 */
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x42;
+	priv->buf[Count++] = Q | (((PO & 0x01) << 7));	/* Adr = 0x42 */
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x44;
+	priv->buf[Count++] = (char)0xFF;	/* Adr = 0x44 */
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x45;
+	priv->buf[Count++] = (char)0xFE;	/* Adr = 0x45 */
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x46;
+	priv->buf[Count++] = 0x7F;	/* Adr = 0x46 */
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x47;
+	priv->buf[Count++] = (char)0x84;	/* Adr = 0x47 */
+
+	status = bulk_immediate(port, (u8 *) priv->buf, Count);
+	if (status != IUU_OPERATION_OK)
+		dbg("%s - write error ", __FUNCTION__);
+	return status;
+}
+
+static int iuu_uart_flush(struct usb_serial_port *port)
+{
+	int i;
+	int status;
+	u8 rxcmd = IUU_UART_RX;
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+
+	dbg("%s - enter", __FUNCTION__);
+
+	if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
+		return -EIO;
+
+	for (i = 0; i < 2; i++) {
+		status = bulk_immediate(port, &rxcmd, 1);
+		if (status != IUU_OPERATION_OK) {
+			dbg("%s - uart_flush_write error", __FUNCTION__);
+			return status;
+		}
+
+		status = read_immediate(port, &priv->len, 1);
+		if (status != IUU_OPERATION_OK) {
+			dbg("%s - uart_flush_read error", __FUNCTION__);
+			return status;
+		}
+
+		if (priv->len > 0) {
+			dbg("%s - uart_flush datalen is : %i ", __FUNCTION__,
+			    priv->len);
+			status = read_immediate(port, priv->buf, priv->len);
+			if (status != IUU_OPERATION_OK) {
+				dbg("%s - uart_flush_read error", __FUNCTION__);
+				return status;
+			}
+		}
+	}
+	dbg("%s - uart_flush_read OK!", __FUNCTION__);
+	iuu_led(port, 0, 0xF000, 0, 0xFF);
+	return status;
+}
+
+static void read_buf_callback(struct urb *urb)
+{
+	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	unsigned char *data = urb->transfer_buffer;
+	struct tty_struct *tty;
+	dbg("%s - urb->status = %d", __FUNCTION__, urb->status);
+
+	if (urb->status) {
+		dbg("%s - urb->status = %d", __FUNCTION__, urb->status);
+		if (urb->status == -EPROTO) {
+			/* reschedule needed */
+		}
+		return;
+	}
+
+	dbg("%s - %i chars to write", __FUNCTION__, urb->actual_length);
+	tty = port->tty;
+	if (data == NULL)
+		dbg("%s - data is NULL !!!", __FUNCTION__);
+	if (tty && urb->actual_length && data) {
+		tty_insert_flip_string(tty, data, urb->actual_length);
+		tty_flip_buffer_push(tty);
+	}
+	iuu_led_activity_on(urb);
+}
+
+static int iuu_bulk_write(struct usb_serial_port *port)
+{
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+	unsigned int flags;
+	int result;
+	int i;
+	char *buf_ptr = port->write_urb->transfer_buffer;
+	dbg("%s - enter", __FUNCTION__);
+
+	*buf_ptr++ = IUU_UART_ESC;
+	*buf_ptr++ = IUU_UART_TX;
+	*buf_ptr++ = priv->writelen;
+
+	memcpy(buf_ptr, priv->writebuf,
+	       priv->writelen);
+	if (debug == 1) {
+		for (i = 0; i < priv->writelen; i++)
+			sprintf(priv->dbgbuf + i*2 ,
+				"%02X", priv->writebuf[i]);
+		priv->dbgbuf[priv->writelen+i*2] = 0;
+		dbg("%s - writing %i chars : %s", __FUNCTION__,
+		    priv->writelen, priv->dbgbuf);
+	}
+	usb_fill_bulk_urb(port->write_urb, port->serial->dev,
+			  usb_sndbulkpipe(port->serial->dev,
+					  port->bulk_out_endpointAddress),
+			  port->write_urb->transfer_buffer, priv->writelen + 3,
+			  iuu_rxcmd, port);
+	result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
+	spin_lock_irqsave(&priv->lock, flags);
+	priv->writelen = 0;
+	spin_unlock_irqrestore(&priv->lock, flags);
+	usb_serial_port_softint(port);
+	return result;
+}
+
+static int iuu_read_buf(struct usb_serial_port *port, int len)
+{
+	int result;
+	dbg("%s - enter", __FUNCTION__);
+
+	usb_fill_bulk_urb(port->read_urb, port->serial->dev,
+			  usb_rcvbulkpipe(port->serial->dev,
+					  port->bulk_in_endpointAddress),
+			  port->read_urb->transfer_buffer, len,
+			  read_buf_callback, port);
+	result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
+	return result;
+}
+
+static void iuu_uart_read_callback(struct urb *urb)
+{
+	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+	unsigned int flags;
+	int status;
+	int error = 0;
+	int len = 0;
+	unsigned char *data = urb->transfer_buffer;
+	priv->poll++;
+
+	dbg("%s - enter", __FUNCTION__);
+
+	if (urb->status) {
+		dbg("%s - urb->status = %d", __FUNCTION__, urb->status);
+		/* error stop all */
+		return;
+	}
+	if (data == NULL)
+		dbg("%s - data is NULL !!!", __FUNCTION__);
+
+	if (urb->actual_length == 1  && data != NULL)
+		len = (int) data[0];
+
+	if (urb->actual_length > 1) {
+		dbg("%s - urb->actual_length = %i", __FUNCTION__,
+		    urb->actual_length);
+		error = 1;
+		return;
+	}
+	/* if len > 0 call readbuf */
+
+	if (len > 0 && error == 0) {
+		dbg("%s - call read buf - len to read is %i ",
+			__FUNCTION__, len);
+		status = iuu_read_buf(port, len);
+		return;
+	}
+	/* need to update status  ? */
+	if (priv->poll > 99) {
+		status = iuu_status(port);
+		priv->poll = 0;
+		return;
+	}
+
+	/* reset waiting ? */
+
+	if (priv->reset == 1) {
+		status = iuu_reset(port, 0xC);
+		return;
+	}
+	/* Writebuf is waiting */
+	spin_lock_irqsave(&priv->lock, flags);
+	if (priv->writelen > 0) {
+		spin_unlock_irqrestore(&priv->lock, flags);
+		status = iuu_bulk_write(port);
+		return;
+	}
+	spin_unlock_irqrestore(&priv->lock, flags);
+	/* if nothing to write call again rxcmd */
+	dbg("%s - rxcmd recall", __FUNCTION__);
+	iuu_led_activity_off(urb);
+	return;
+}
+
+static int iuu_uart_write(struct usb_serial_port *port, const u8 *buf,
+			  int count)
+{
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+	unsigned int flags;
+	dbg("%s - enter", __FUNCTION__);
+
+	if (count > 256)
+		return -ENOMEM;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	if (priv->writelen > 0) {
+		/* buffer already filled but not commited */
+		spin_unlock_irqrestore(&priv->lock, flags);
+		return (0);
+	}
+	/* fill the buffer */
+	memcpy(priv->writebuf, buf, count);
+	priv->writelen = count;
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	return (count);
+}
+
+static void read_rxcmd_callback(struct urb *urb)
+{
+	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	int result;
+	dbg("%s - enter", __FUNCTION__);
+
+	dbg("%s - urb->status = %d", __FUNCTION__, urb->status);
+
+	if (urb->status) {
+		dbg("%s - urb->status = %d", __FUNCTION__, urb->status);
+		/* error stop all */
+		return;
+	}
+
+	usb_fill_bulk_urb(port->read_urb, port->serial->dev,
+			  usb_rcvbulkpipe(port->serial->dev,
+					  port->bulk_in_endpointAddress),
+			  port->read_urb->transfer_buffer, 256,
+			  iuu_uart_read_callback, port);
+	result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
+	dbg("%s - submit result = %d", __FUNCTION__, result);
+	return;
+}
+
+static int iuu_uart_on(struct usb_serial_port *port)
+{
+	int status;
+	u8 *buf;
+
+	buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL);
+
+	if (!buf)
+		return -ENOMEM;
+
+	buf[0] = IUU_UART_ENABLE;
+	buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
+	buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
+	buf[3] = (u8) (0x0F0 & IUU_TWO_STOP_BITS) | (0x07 & IUU_PARITY_EVEN);
+
+	status = bulk_immediate(port, buf, 4);
+	if (status != IUU_OPERATION_OK) {
+		dbg("%s - uart_on error", __FUNCTION__);
+		goto uart_enable_failed;
+	}
+	/*  iuu_reset() the card after iuu_uart_on() */
+	status = iuu_uart_flush(port);
+	if (status != IUU_OPERATION_OK)
+		dbg("%s - uart_flush error", __FUNCTION__);
+uart_enable_failed:
+	kfree(buf);
+	return status;
+}
+
+/*  Diables the IUU UART (a.k.a. the Phoenix voiderface) */
+static int iuu_uart_off(struct usb_serial_port *port)
+{
+	int status;
+	u8 *buf;
+	buf = kmalloc(1, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+	buf[0] = IUU_UART_DISABLE;
+
+	status = bulk_immediate(port, buf, 1);
+	if (status != IUU_OPERATION_OK)
+		dbg("%s - uart_off error", __FUNCTION__);
+
+	kfree(buf);
+	return status;
+}
+
+static int iuu_uart_baud(struct usb_serial_port *port, u32 baud,
+			 u32 *actual, u8 parity)
+{
+	int status;
+	u8 *dataout;
+	u8 DataCount = 0;
+	u8 T1Frekvens = 0;
+	u8 T1reload = 0;
+	unsigned int T1FrekvensHZ = 0;
+
+	dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL);
+
+	if (!dataout)
+		return -ENOMEM;
+
+	if (baud < 1200 || baud > 230400) {
+		kfree(dataout);
+		return IUU_INVALID_PARAMETER;
+	}
+	if (baud > 977) {
+		T1Frekvens = 3;
+		T1FrekvensHZ = 500000;
+	}
+
+	if (baud > 3906) {
+		T1Frekvens = 2;
+		T1FrekvensHZ = 2000000;
+	}
+
+	if (baud > 11718) {
+		T1Frekvens = 1;
+		T1FrekvensHZ = 6000000;
+	}
+
+	if (baud > 46875) {
+		T1Frekvens = 0;
+		T1FrekvensHZ = 24000000;
+	}
+
+	T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
+
+	/*  magic number here:  ENTER_FIRMWARE_UPDATE; */
+	dataout[DataCount++] = IUU_UART_ESC;
+	/*  magic number here:  CHANGE_BAUD; */
+	dataout[DataCount++] = IUU_UART_CHANGE;
+	dataout[DataCount++] = T1Frekvens;
+	dataout[DataCount++] = T1reload;
+
+	*actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
+
+	switch (parity & 0x0F) {
+	case IUU_PARITY_NONE:
+		dataout[DataCount++] = 0x00;
+		break;
+	case IUU_PARITY_EVEN:
+		dataout[DataCount++] = 0x01;
+		break;
+	case IUU_PARITY_ODD:
+		dataout[DataCount++] = 0x02;
+		break;
+	case IUU_PARITY_MARK:
+		dataout[DataCount++] = 0x03;
+		break;
+	case IUU_PARITY_SPACE:
+		dataout[DataCount++] = 0x04;
+		break;
+	default:
+		kfree(dataout);
+		return IUU_INVALID_PARAMETER;
+		break;
+	}
+
+	switch (parity & 0xF0) {
+	case IUU_ONE_STOP_BIT:
+		dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
+		break;
+
+	case IUU_TWO_STOP_BITS:
+		dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
+		break;
+	default:
+		kfree(dataout);
+		return IUU_INVALID_PARAMETER;
+		break;
+	}
+
+	status = bulk_immediate(port, dataout, DataCount);
+	if (status != IUU_OPERATION_OK)
+		dbg("%s - uart_off error", __FUNCTION__);
+	kfree(dataout);
+	return status;
+}
+
+static int set_control_lines(struct usb_device *dev, u8 value)
+{
+	return 0;
+}
+
+static void iuu_close(struct usb_serial_port *port, struct file *filp)
+{
+	/* iuu_led (port,255,0,0,0); */
+	struct usb_serial *serial;
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+	unsigned long flags;
+	unsigned int c_cflag;
+
+	serial = port->serial;
+	if (!serial)
+		return;
+
+	dbg("%s - port %d", __FUNCTION__, port->number);
+
+	iuu_uart_off(port);
+	if (serial->dev) {
+		if (port->tty) {
+			c_cflag = port->tty->termios->c_cflag;
+			if (c_cflag & HUPCL) {
+				/* drop DTR and RTS */
+				priv = usb_get_serial_port_data(port);
+				spin_lock_irqsave(&priv->lock, flags);
+				priv->line_control = 0;
+				spin_unlock_irqrestore(&priv->lock, flags);
+				set_control_lines(port->serial->dev, 0);
+			}
+		}
+		/* free writebuf */
+		/* shutdown our urbs */
+		dbg("%s - shutting down urbs", __FUNCTION__);
+		usb_kill_urb(port->write_urb);
+		usb_kill_urb(port->read_urb);
+		usb_kill_urb(port->interrupt_in_urb);
+		msleep(1000);
+		/* wait one second to free all buffers */
+		iuu_led(port, 0, 0, 0xF000, 0xFF);
+		msleep(1000);
+		usb_reset_device(port->serial->dev);
+	}
+}
+
+static int iuu_open(struct usb_serial_port *port, struct file *filp)
+{
+	struct usb_serial *serial = port->serial;
+	u8 *buf;
+	int result;
+	u32 actual;
+	unsigned long flags;
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+
+	dbg("%s -  port %d", __FUNCTION__, port->number);
+	usb_clear_halt(serial->dev, port->write_urb->pipe);
+	usb_clear_halt(serial->dev, port->read_urb->pipe);
+
+	buf = kmalloc(10, GFP_KERNEL);
+	if (buf == NULL)
+		return -ENOMEM;
+
+	/* fixup the endpoint buffer size */
+	kfree(port->bulk_out_buffer);
+	port->bulk_out_buffer = kmalloc(512, GFP_KERNEL);
+	port->bulk_out_size = 512;
+	kfree(port->bulk_in_buffer);
+	port->bulk_in_buffer = kmalloc(512, GFP_KERNEL);
+	port->bulk_in_size = 512;
+
+	if (!port->bulk_out_buffer || !port->bulk_in_buffer) {
+		kfree(port->bulk_out_buffer);
+		kfree(port->bulk_in_buffer);
+		kfree(buf);
+		return -ENOMEM;
+	}
+
+	usb_fill_bulk_urb(port->write_urb, port->serial->dev,
+			  usb_sndbulkpipe(port->serial->dev,
+					  port->bulk_out_endpointAddress),
+			  port->bulk_out_buffer, 512,
+			  NULL, NULL);
+
+
+	usb_fill_bulk_urb(port->read_urb, port->serial->dev,
+			  usb_rcvbulkpipe(port->serial->dev,
+					  port->bulk_in_endpointAddress),
+			  port->bulk_in_buffer, 512,
+			  NULL, NULL);
+
+	/* set the termios structure */
+	spin_lock_irqsave(&priv->lock, flags);
+	if (!priv->termios_initialized) {
+		*(port->tty->termios) = tty_std_termios;
+		port->tty->termios->c_cflag = CLOCAL | CREAD | CS8 | B9600
+						| TIOCM_CTS | CSTOPB | PARENB;
+		port->tty->termios->c_lflag = 0;
+		port->tty->termios->c_oflag = 0;
+		port->tty->termios->c_iflag = 0;
+		priv->termios_initialized = 1;
+		port->tty->low_latency = 1;
+		priv->poll = 0;
+	 }
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	/* initialize writebuf */
+#define FISH(a, b, c, d) do { \
+	result = usb_control_msg(port->serial->dev,	\
+				usb_rcvctrlpipe(port->serial->dev, 0),	\
+				b, a, c, d, buf, 1, 1000); \
+	dbg("0x%x:0x%x:0x%x:0x%x  %d - %x", a, b, c, d, result, \
+				buf[0]); } while (0);
+
+#define SOUP(a, b, c, d)  do { \
+	result = usb_control_msg(port->serial->dev,	\
+				usb_sndctrlpipe(port->serial->dev, 0),	\
+				b, a, c, d, NULL, 0, 1000); \
+	dbg("0x%x:0x%x:0x%x:0x%x  %d", a, b, c, d, result); } while (0)
+
+	/*  This is not UART related but IUU USB driver related or something */
+	/*  like that. Basically no IUU will accept any commands from the USB */
+	/*  host unless it has received the following message */
+	/* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
+
+	SOUP(0x03, 0x02, 0x02, 0x0);
+	kfree(buf);
+	iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
+	iuu_uart_on(port);
+	if (boost < 100)
+		boost = 100;
+	switch (clockmode) {
+	case 2:		/*  3.680 Mhz */
+		iuu_clk(port, IUU_CLK_3680000 * boost / 100);
+		result =
+		    iuu_uart_baud(port, 9600 * boost / 100, &actual,
+				  IUU_PARITY_EVEN);
+		break;
+	case 3:		/*  6.00 Mhz */
+		iuu_clk(port, IUU_CLK_6000000 * boost / 100);
+		result =
+		    iuu_uart_baud(port, 16457 * boost / 100, &actual,
+				  IUU_PARITY_EVEN);
+		break;
+	default:		/*  3.579 Mhz */
+		iuu_clk(port, IUU_CLK_3579000 * boost / 100);
+		result =
+		    iuu_uart_baud(port, 9600 * boost / 100, &actual,
+				  IUU_PARITY_EVEN);
+	}
+
+	/* set the cardin cardout signals */
+	switch (cdmode) {
+	case 0:
+		iuu_cardin = 0;
+		iuu_cardout = 0;
+		break;
+	case 1:
+		iuu_cardin = TIOCM_CD;
+		iuu_cardout =  0;
+		break;
+	case 2:
+		iuu_cardin = 0;
+		iuu_cardout = TIOCM_CD;
+		break;
+	case 3:
+		iuu_cardin = TIOCM_DSR;
+		iuu_cardout = 0;
+		break;
+	case 4:
+		iuu_cardin = 0;
+		iuu_cardout = TIOCM_DSR;
+		break;
+	case 5:
+		iuu_cardin = TIOCM_CTS;
+		iuu_cardout = 0;
+		break;
+	case 6:
+		iuu_cardin = 0;
+		iuu_cardout = TIOCM_CTS;
+		break;
+	case 7:
+		iuu_cardin = TIOCM_RNG;
+		iuu_cardout = 0;
+		break;
+	case 8:
+		iuu_cardin = 0;
+		iuu_cardout = TIOCM_RNG;
+	}
+
+	iuu_uart_flush(port);
+
+	dbg("%s - initialization done", __FUNCTION__);
+
+	memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
+	usb_fill_bulk_urb(port->write_urb, port->serial->dev,
+			  usb_sndbulkpipe(port->serial->dev,
+					  port->bulk_out_endpointAddress),
+			  port->write_urb->transfer_buffer, 1,
+			  read_rxcmd_callback, port);
+	result = usb_submit_urb(port->write_urb, GFP_KERNEL);
+
+	if (result) {
+		dev_err(&port->dev, "%s - failed submitting read urb,"
+			" error %d\n", __FUNCTION__, result);
+		iuu_close(port, NULL);
+		return -EPROTO;
+	} else {
+		dbg("%s - rxcmd OK", __FUNCTION__);
+	}
+	return result;
+}
+
+static struct usb_serial_driver iuu_device = {
+	.driver = {
+		   .owner = THIS_MODULE,
+		   .name = "iuu_phoenix",
+		   },
+	.id_table = id_table,
+	.num_interrupt_in = NUM_DONT_CARE,
+	.num_bulk_in = 1,
+	.num_bulk_out = 1,
+	.num_ports = 1,
+	.open = iuu_open,
+	.close = iuu_close,
+	.write = iuu_uart_write,
+	.read_bulk_callback = iuu_uart_read_callback,
+	.tiocmget = iuu_tiocmget,
+	.tiocmset = iuu_tiocmset,
+	.attach = iuu_startup,
+	.shutdown = iuu_shutdown,
+};
+
+static int __init iuu_init(void)
+{
+	int retval;
+	retval = usb_serial_register(&iuu_device);
+	if (retval)
+		goto failed_usb_serial_register;
+	retval = usb_register(&iuu_driver);
+	if (retval)
+		goto failed_usb_register;
+	info(DRIVER_DESC " " DRIVER_VERSION);
+	return 0;
+failed_usb_register:
+	usb_serial_deregister(&iuu_device);
+failed_usb_serial_register:
+	return retval;
+}
+
+static void __exit iuu_exit(void)
+{
+	usb_deregister(&iuu_driver);
+	usb_serial_deregister(&iuu_device);
+}
+
+module_init(iuu_init);
+module_exit(iuu_exit);
+
+MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+MODULE_VERSION(DRIVER_VERSION);
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug enabled or not");
+
+module_param(xmas, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(xmas, "xmas color enabled or not");
+
+module_param(boost, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(boost, "overclock boost percent 100 to 500");
+
+module_param(clockmode, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(clockmode, "1=3Mhz579,2=3Mhz680,3=6Mhz");
+
+module_param(cdmode, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(cdmode, "Card detect mode 0=none, 1=CD, 2=!CD, 3=DSR, "
+		 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING");