[mirror_ubuntu-bionic-kernel.git] / drivers / usb / serial / kobil_sct.c

// SPDX-License-Identifier: GPL-2.0+
/*
 *  KOBIL USB Smart Card Terminal Driver
 *
 *  Copyright (C) 2002  KOBIL Systems GmbH
 *  Author: Thomas Wahrenbruch
 *
 *  Contact: linuxusb@kobil.de
 *
 *  This program is largely derived from work by the linux-usb group
 *  and associated source files.  Please see the usb/serial files for
 *  individual credits and copyrights.
 *
 *  Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and
 *  patience.
 *
 * Supported readers: USB TWIN, KAAN Standard Plus and SecOVID Reader Plus
 * (Adapter K), B1 Professional and KAAN Professional (Adapter B)
 */


#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
#include <linux/ioctl.h>
#include "kobil_sct.h"

#define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
#define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"

#define KOBIL_VENDOR_ID			0x0D46
#define KOBIL_ADAPTER_B_PRODUCT_ID	0x2011
#define KOBIL_ADAPTER_K_PRODUCT_ID	0x2012
#define KOBIL_USBTWIN_PRODUCT_ID	0x0078
#define KOBIL_KAAN_SIM_PRODUCT_ID       0x0081

#define KOBIL_TIMEOUT		500
#define KOBIL_BUF_LENGTH	300


/* Function prototypes */
static int kobil_port_probe(struct usb_serial_port *probe);
static int kobil_port_remove(struct usb_serial_port *probe);
static int  kobil_open(struct tty_struct *tty, struct usb_serial_port *port);
static void kobil_close(struct usb_serial_port *port);
static int  kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
			 const unsigned char *buf, int count);
static int  kobil_write_room(struct tty_struct *tty);
static int  kobil_ioctl(struct tty_struct *tty,
			unsigned int cmd, unsigned long arg);
static int  kobil_tiocmget(struct tty_struct *tty);
static int  kobil_tiocmset(struct tty_struct *tty,
			   unsigned int set, unsigned int clear);
static void kobil_read_int_callback(struct urb *urb);
static void kobil_write_int_callback(struct urb *urb);
static void kobil_set_termios(struct tty_struct *tty,
			struct usb_serial_port *port, struct ktermios *old);
static void kobil_init_termios(struct tty_struct *tty);

static const struct usb_device_id id_table[] = {
	{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
	{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
	{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
	{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
	{ }			/* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, id_table);

static struct usb_serial_driver kobil_device = {
	.driver = {
		.owner =	THIS_MODULE,
		.name =		"kobil",
	},
	.description =		"KOBIL USB smart card terminal",
	.id_table =		id_table,
	.num_ports =		1,
	.num_interrupt_out =	1,
	.port_probe =		kobil_port_probe,
	.port_remove =		kobil_port_remove,
	.ioctl =		kobil_ioctl,
	.set_termios =		kobil_set_termios,
	.init_termios =		kobil_init_termios,
	.tiocmget =		kobil_tiocmget,
	.tiocmset =		kobil_tiocmset,
	.open =			kobil_open,
	.close =		kobil_close,
	.write =		kobil_write,
	.write_room =		kobil_write_room,
	.read_int_callback =	kobil_read_int_callback,
	.write_int_callback =	kobil_write_int_callback,
};

static struct usb_serial_driver * const serial_drivers[] = {
	&kobil_device, NULL
};

struct kobil_private {
	unsigned char buf[KOBIL_BUF_LENGTH]; /* buffer for the APDU to send */
	int filled;  /* index of the last char in buf */
	int cur_pos; /* index of the next char to send in buf */
	__u16 device_type;
};


static int kobil_port_probe(struct usb_serial_port *port)
{
	struct usb_serial *serial = port->serial;
	struct kobil_private *priv;

	priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	priv->filled = 0;
	priv->cur_pos = 0;
	priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);

	switch (priv->device_type) {
	case KOBIL_ADAPTER_B_PRODUCT_ID:
		dev_dbg(&serial->dev->dev, "KOBIL B1 PRO / KAAN PRO detected\n");
		break;
	case KOBIL_ADAPTER_K_PRODUCT_ID:
		dev_dbg(&serial->dev->dev, "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
		break;
	case KOBIL_USBTWIN_PRODUCT_ID:
		dev_dbg(&serial->dev->dev, "KOBIL USBTWIN detected\n");
		break;
	case KOBIL_KAAN_SIM_PRODUCT_ID:
		dev_dbg(&serial->dev->dev, "KOBIL KAAN SIM detected\n");
		break;
	}
	usb_set_serial_port_data(port, priv);

	return 0;
}


static int kobil_port_remove(struct usb_serial_port *port)
{
	struct kobil_private *priv;

	priv = usb_get_serial_port_data(port);
	kfree(priv);

	return 0;
}

static void kobil_init_termios(struct tty_struct *tty)
{
	/* Default to echo off and other sane device settings */
	tty->termios.c_lflag = 0;
	tty->termios.c_iflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
	tty->termios.c_iflag |= IGNBRK | IGNPAR | IXOFF;
	/* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
	tty->termios.c_oflag &= ~ONLCR;
}

static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
{
	struct device *dev = &port->dev;
	int result = 0;
	struct kobil_private *priv;
	unsigned char *transfer_buffer;
	int transfer_buffer_length = 8;

	priv = usb_get_serial_port_data(port);

	/* allocate memory for transfer buffer */
	transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
	if (!transfer_buffer)
		return -ENOMEM;

	/* get hardware version */
	result = usb_control_msg(port->serial->dev,
			  usb_rcvctrlpipe(port->serial->dev, 0),
			  SUSBCRequest_GetMisc,
			  USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
			  SUSBCR_MSC_GetHWVersion,
			  0,
			  transfer_buffer,
			  transfer_buffer_length,
			  KOBIL_TIMEOUT
	);
	dev_dbg(dev, "%s - Send get_HW_version URB returns: %i\n", __func__, result);
	dev_dbg(dev, "Hardware version: %i.%i.%i\n", transfer_buffer[0],
		transfer_buffer[1], transfer_buffer[2]);

	/* get firmware version */
	result = usb_control_msg(port->serial->dev,
			  usb_rcvctrlpipe(port->serial->dev, 0),
			  SUSBCRequest_GetMisc,
			  USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
			  SUSBCR_MSC_GetFWVersion,
			  0,
			  transfer_buffer,
			  transfer_buffer_length,
			  KOBIL_TIMEOUT
	);
	dev_dbg(dev, "%s - Send get_FW_version URB returns: %i\n", __func__, result);
	dev_dbg(dev, "Firmware version: %i.%i.%i\n", transfer_buffer[0],
		transfer_buffer[1], transfer_buffer[2]);

	if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
			priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
		/* Setting Baudrate, Parity and Stopbits */
		result = usb_control_msg(port->serial->dev,
			  usb_sndctrlpipe(port->serial->dev, 0),
			  SUSBCRequest_SetBaudRateParityAndStopBits,
			  USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
			  SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
							SUSBCR_SPASB_1StopBit,
			  0,
			  NULL,
			  0,
			  KOBIL_TIMEOUT
		);
		dev_dbg(dev, "%s - Send set_baudrate URB returns: %i\n", __func__, result);

		/* reset all queues */
		result = usb_control_msg(port->serial->dev,
			  usb_sndctrlpipe(port->serial->dev, 0),
			  SUSBCRequest_Misc,
			  USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
			  SUSBCR_MSC_ResetAllQueues,
			  0,
			  NULL,
			  0,
			  KOBIL_TIMEOUT
		);
		dev_dbg(dev, "%s - Send reset_all_queues URB returns: %i\n", __func__, result);
	}
	if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
	    priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
	    priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
		/* start reading (Adapter B 'cause PNP string) */
		result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
		dev_dbg(dev, "%s - Send read URB returns: %i\n", __func__, result);
	}

	kfree(transfer_buffer);
	return 0;
}


static void kobil_close(struct usb_serial_port *port)
{
	/* FIXME: Add rts/dtr methods */
	usb_kill_urb(port->interrupt_out_urb);
	usb_kill_urb(port->interrupt_in_urb);
}


static void kobil_read_int_callback(struct urb *urb)
{
	int result;
	struct usb_serial_port *port = urb->context;
	unsigned char *data = urb->transfer_buffer;
	int status = urb->status;

	if (status) {
		dev_dbg(&port->dev, "%s - Read int status not zero: %d\n", __func__, status);
		return;
	}

	if (urb->actual_length) {
		usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
									data);
		tty_insert_flip_string(&port->port, data, urb->actual_length);
		tty_flip_buffer_push(&port->port);
	}

	result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
	dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
}


static void kobil_write_int_callback(struct urb *urb)
{
}


static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
			const unsigned char *buf, int count)
{
	int length = 0;
	int result = 0;
	int todo = 0;
	struct kobil_private *priv;

	if (count == 0) {
		dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
		return 0;
	}

	priv = usb_get_serial_port_data(port);

	if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
		dev_dbg(&port->dev, "%s - Error: write request bigger than buffer size\n", __func__);
		return -ENOMEM;
	}

	/* Copy data to buffer */
	memcpy(priv->buf + priv->filled, buf, count);
	usb_serial_debug_data(&port->dev, __func__, count, priv->buf + priv->filled);
	priv->filled = priv->filled + count;

	/* only send complete block. TWIN, KAAN SIM and adapter K
	   use the same protocol. */
	if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
	     ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
		/* stop reading (except TWIN and KAAN SIM) */
		if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
			|| (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
			usb_kill_urb(port->interrupt_in_urb);

		todo = priv->filled - priv->cur_pos;

		while (todo > 0) {
			/* max 8 byte in one urb (endpoint size) */
			length = min(todo, port->interrupt_out_size);
			/* copy data to transfer buffer */
			memcpy(port->interrupt_out_buffer,
					priv->buf + priv->cur_pos, length);
			port->interrupt_out_urb->transfer_buffer_length = length;

			priv->cur_pos = priv->cur_pos + length;
			result = usb_submit_urb(port->interrupt_out_urb,
					GFP_ATOMIC);
			dev_dbg(&port->dev, "%s - Send write URB returns: %i\n", __func__, result);
			todo = priv->filled - priv->cur_pos;

			if (todo > 0)
				msleep(24);
		}

		priv->filled = 0;
		priv->cur_pos = 0;

		/* start reading (except TWIN and KAAN SIM) */
		if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
			priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
			result = usb_submit_urb(port->interrupt_in_urb,
					GFP_ATOMIC);
			dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
		}
	}
	return count;
}


static int kobil_write_room(struct tty_struct *tty)
{
	/* FIXME */
	return 8;
}


static int kobil_tiocmget(struct tty_struct *tty)
{
	struct usb_serial_port *port = tty->driver_data;
	struct kobil_private *priv;
	int result;
	unsigned char *transfer_buffer;
	int transfer_buffer_length = 8;

	priv = usb_get_serial_port_data(port);
	if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
			|| priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
		/* This device doesn't support ioctl calls */
		return -EINVAL;
	}

	/* allocate memory for transfer buffer */
	transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
	if (!transfer_buffer)
		return -ENOMEM;

	result = usb_control_msg(port->serial->dev,
			  usb_rcvctrlpipe(port->serial->dev, 0),
			  SUSBCRequest_GetStatusLineState,
			  USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
			  0,
			  0,
			  transfer_buffer,
			  transfer_buffer_length,
			  KOBIL_TIMEOUT);

	dev_dbg(&port->dev, "Send get_status_line_state URB returns: %i\n",
			result);
	if (result < 1) {
		if (result >= 0)
			result = -EIO;
		goto out_free;
	}

	dev_dbg(&port->dev, "Statusline: %02x\n", transfer_buffer[0]);

	result = 0;
	if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
		result = TIOCM_DSR;
out_free:
	kfree(transfer_buffer);
	return result;
}

static int kobil_tiocmset(struct tty_struct *tty,
			   unsigned int set, unsigned int clear)
{
	struct usb_serial_port *port = tty->driver_data;
	struct device *dev = &port->dev;
	struct kobil_private *priv;
	int result;
	int dtr = 0;
	int rts = 0;

	/* FIXME: locking ? */
	priv = usb_get_serial_port_data(port);
	if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
		|| priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
		/* This device doesn't support ioctl calls */
		return -EINVAL;
	}

	if (set & TIOCM_RTS)
		rts = 1;
	if (set & TIOCM_DTR)
		dtr = 1;
	if (clear & TIOCM_RTS)
		rts = 0;
	if (clear & TIOCM_DTR)
		dtr = 0;

	if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
		if (dtr != 0)
			dev_dbg(dev, "%s - Setting DTR\n", __func__);
		else
			dev_dbg(dev, "%s - Clearing DTR\n", __func__);
		result = usb_control_msg(port->serial->dev,
			  usb_sndctrlpipe(port->serial->dev, 0),
			  SUSBCRequest_SetStatusLinesOrQueues,
			  USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
			  ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
			  0,
			  NULL,
			  0,
			  KOBIL_TIMEOUT);
	} else {
		if (rts != 0)
			dev_dbg(dev, "%s - Setting RTS\n", __func__);
		else
			dev_dbg(dev, "%s - Clearing RTS\n", __func__);
		result = usb_control_msg(port->serial->dev,
			usb_sndctrlpipe(port->serial->dev, 0),
			SUSBCRequest_SetStatusLinesOrQueues,
			USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
			((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
			0,
			NULL,
			0,
			KOBIL_TIMEOUT);
	}
	dev_dbg(dev, "%s - Send set_status_line URB returns: %i\n", __func__, result);
	return (result < 0) ? result : 0;
}

static void kobil_set_termios(struct tty_struct *tty,
			struct usb_serial_port *port, struct ktermios *old)
{
	struct kobil_private *priv;
	int result;
	unsigned short urb_val = 0;
	int c_cflag = tty->termios.c_cflag;
	speed_t speed;

	priv = usb_get_serial_port_data(port);
	if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
			priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
		/* This device doesn't support ioctl calls */
		tty_termios_copy_hw(&tty->termios, old);
		return;
	}

	speed = tty_get_baud_rate(tty);
	switch (speed) {
	case 1200:
		urb_val = SUSBCR_SBR_1200;
		break;
	default:
		speed = 9600;
		/* fall through */
	case 9600:
		urb_val = SUSBCR_SBR_9600;
		break;
	}
	urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
							SUSBCR_SPASB_1StopBit;
	if (c_cflag & PARENB) {
		if  (c_cflag & PARODD)
			urb_val |= SUSBCR_SPASB_OddParity;
		else
			urb_val |= SUSBCR_SPASB_EvenParity;
	} else
		urb_val |= SUSBCR_SPASB_NoParity;
	tty->termios.c_cflag &= ~CMSPAR;
	tty_encode_baud_rate(tty, speed, speed);

	result = usb_control_msg(port->serial->dev,
		  usb_sndctrlpipe(port->serial->dev, 0),
		  SUSBCRequest_SetBaudRateParityAndStopBits,
		  USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
		  urb_val,
		  0,
		  NULL,
		  0,
		  KOBIL_TIMEOUT
		);
}

static int kobil_ioctl(struct tty_struct *tty,
					unsigned int cmd, unsigned long arg)
{
	struct usb_serial_port *port = tty->driver_data;
	struct kobil_private *priv = usb_get_serial_port_data(port);
	int result;

	if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
			priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
		/* This device doesn't support ioctl calls */
		return -ENOIOCTLCMD;

	switch (cmd) {
	case TCFLSH:
		result = usb_control_msg(port->serial->dev,
			  usb_sndctrlpipe(port->serial->dev, 0),
			  SUSBCRequest_Misc,
			  USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
			  SUSBCR_MSC_ResetAllQueues,
			  0,
			  NULL,
			  0,
			  KOBIL_TIMEOUT
			);

		dev_dbg(&port->dev,
			"%s - Send reset_all_queues (FLUSH) URB returns: %i\n",
			__func__, result);
		return (result < 0) ? -EIO: 0;
	default:
		return -ENOIOCTLCMD;
	}
}

module_usb_serial_driver(serial_drivers, id_table);

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
Commit	Line	Data
5fd54ace	1	// SPDX-License-Identifier: GPL-2.0+
1da177e4 LT	2	/*
	3	* KOBIL USB Smart Card Terminal Driver
	4	*
dee0a7cc	5	* Copyright (C) 2002 KOBIL Systems GmbH
1da177e4 LT	6	* Author: Thomas Wahrenbruch
	7	*
	8	* Contact: linuxusb@kobil.de
	9	*
	10	* This program is largely derived from work by the linux-usb group
	11	* and associated source files. Please see the usb/serial files for
	12	* individual credits and copyrights.
	13	*
1da177e4 LT	14	* Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and
	15	* patience.
	16	*
	17	* Supported readers: USB TWIN, KAAN Standard Plus and SecOVID Reader Plus
	18	* (Adapter K), B1 Professional and KAAN Professional (Adapter B)
1da177e4 LT	19	*/
	20
	21
1da177e4 LT	22	#include <linux/kernel.h>
1da177e4 LT	23	#include <linux/errno.h>
1da177e4 LT	24	#include <linux/slab.h>
	25	#include <linux/tty.h>
	26	#include <linux/tty_driver.h>
	27	#include <linux/tty_flip.h>
	28	#include <linux/module.h>
	29	#include <linux/spinlock.h>
dee0a7cc	30	#include <linux/uaccess.h>
1da177e4	31	#include <linux/usb.h>
a969888c	32	#include <linux/usb/serial.h>
1da177e4	33	#include <linux/ioctl.h>
1da177e4 LT	34	#include "kobil_sct.h"
1da177e4 LT	35
1da177e4 LT	36	#define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
	37	#define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
	38
	39	#define KOBIL_VENDOR_ID 0x0D46
	40	#define KOBIL_ADAPTER_B_PRODUCT_ID 0x2011
	41	#define KOBIL_ADAPTER_K_PRODUCT_ID 0x2012
	42	#define KOBIL_USBTWIN_PRODUCT_ID 0x0078
	43	#define KOBIL_KAAN_SIM_PRODUCT_ID 0x0081
	44
	45	#define KOBIL_TIMEOUT 500
	46	#define KOBIL_BUF_LENGTH 300
	47
	48
	49	/* Function prototypes */
95940a04 JH	50	static int kobil_port_probe(struct usb_serial_port *probe);
95940a04 JH	51	static int kobil_port_remove(struct usb_serial_port *probe);
a509a7e4	52	static int kobil_open(struct tty_struct tty, struct usb_serial_port port);
335f8514	53	static void kobil_close(struct usb_serial_port *port);
dee0a7cc	54	static int kobil_write(struct tty_struct tty, struct usb_serial_port port,
1da177e4	55	const unsigned char *buf, int count);
95da310e	56	static int kobil_write_room(struct tty_struct *tty);
00a0d0d6	57	static int kobil_ioctl(struct tty_struct *tty,
1da177e4	58	unsigned int cmd, unsigned long arg);
60b33c13	59	static int kobil_tiocmget(struct tty_struct *tty);
20b9d177	60	static int kobil_tiocmset(struct tty_struct *tty,
1da177e4	61	unsigned int set, unsigned int clear);
dee0a7cc	62	static void kobil_read_int_callback(struct urb *urb);
feb0a36a	63	static void kobil_write_int_callback(struct urb *urb);
dee0a7cc	64	static void kobil_set_termios(struct tty_struct *tty,
95da310e	65	struct usb_serial_port port, struct ktermios old);
fe1ae7fd	66	static void kobil_init_termios(struct tty_struct *tty);
1da177e4	67
7d40d7e8	68	static const struct usb_device_id id_table[] = {
1da177e4 LT	69	{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
	70	{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
	71	{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
	72	{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
	73	{ } /* Terminating entry */
	74	};
dee0a7cc	75	MODULE_DEVICE_TABLE(usb, id_table);
1da177e4	76
ea65370d	77	static struct usb_serial_driver kobil_device = {
18fcac35 GKH	78	.driver = {
18fcac35 GKH	79	.owner = THIS_MODULE,
269bda1c	80	.name = "kobil",
18fcac35	81	},
269bda1c	82	.description = "KOBIL USB smart card terminal",
1da177e4	83	.id_table = id_table,
1da177e4	84	.num_ports = 1,
35194572	85	.num_interrupt_out = 1,
95940a04 JH	86	.port_probe = kobil_port_probe,
95940a04 JH	87	.port_remove = kobil_port_remove,
1da177e4	88	.ioctl = kobil_ioctl,
94d0f7ea	89	.set_termios = kobil_set_termios,
fe1ae7fd	90	.init_termios = kobil_init_termios,
1da177e4 LT	91	.tiocmget = kobil_tiocmget,
	92	.tiocmset = kobil_tiocmset,
	93	.open = kobil_open,
	94	.close = kobil_close,
	95	.write = kobil_write,
	96	.write_room = kobil_write_room,
	97	.read_int_callback = kobil_read_int_callback,
feb0a36a	98	.write_int_callback = kobil_write_int_callback,
1da177e4 LT	99	};
1da177e4 LT	100
4d2a7aff AS	101	static struct usb_serial_driver * const serial_drivers[] = {
	102	&kobil_device, NULL
	103	};
1da177e4 LT	104
1da177e4 LT	105	struct kobil_private {
dee0a7cc AC	106	unsigned char buf[KOBIL_BUF_LENGTH]; /* buffer for the APDU to send */
	107	int filled; /* index of the last char in buf */
	108	int cur_pos; /* index of the next char to send in buf */
1da177e4	109	__u16 device_type;
1da177e4 LT	110	};
	111
	112
95940a04	113	static int kobil_port_probe(struct usb_serial_port *port)
1da177e4	114	{
95940a04	115	struct usb_serial *serial = port->serial;
1da177e4	116	struct kobil_private *priv;
1da177e4 LT	117
1da177e4 LT	118	priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
dee0a7cc	119	if (!priv)
1da177e4	120	return -ENOMEM;
1da177e4 LT	121
	122	priv->filled = 0;
	123	priv->cur_pos = 0;
	124	priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
1da177e4	125
dee0a7cc	126	switch (priv->device_type) {
1da177e4	127	case KOBIL_ADAPTER_B_PRODUCT_ID:
6c27ad83	128	dev_dbg(&serial->dev->dev, "KOBIL B1 PRO / KAAN PRO detected\n");
1da177e4 LT	129	break;
1da177e4 LT	130	case KOBIL_ADAPTER_K_PRODUCT_ID:
6c27ad83	131	dev_dbg(&serial->dev->dev, "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
1da177e4 LT	132	break;
1da177e4 LT	133	case KOBIL_USBTWIN_PRODUCT_ID:
6c27ad83	134	dev_dbg(&serial->dev->dev, "KOBIL USBTWIN detected\n");
1da177e4 LT	135	break;
1da177e4 LT	136	case KOBIL_KAAN_SIM_PRODUCT_ID:
6c27ad83	137	dev_dbg(&serial->dev->dev, "KOBIL KAAN SIM detected\n");
1da177e4 LT	138	break;
1da177e4 LT	139	}
95940a04	140	usb_set_serial_port_data(port, priv);
1da177e4	141
1da177e4 LT	142	return 0;
	143	}
	144
	145
95940a04	146	static int kobil_port_remove(struct usb_serial_port *port)
1da177e4	147	{
95940a04	148	struct kobil_private *priv;
1da177e4	149
95940a04 JH	150	priv = usb_get_serial_port_data(port);
	151	kfree(priv);
	152
	153	return 0;
1da177e4 LT	154	}
1da177e4 LT	155
fe1ae7fd AC	156	static void kobil_init_termios(struct tty_struct *tty)
	157	{
	158	/* Default to echo off and other sane device settings */
adc8d746	159	tty->termios.c_lflag = 0;
6a6c8b36 AC	160	tty->termios.c_iflag &= ~(ISIG \| ICANON \| ECHO \| IEXTEN \| XCASE);
6a6c8b36 AC	161	tty->termios.c_iflag \|= IGNBRK \| IGNPAR \| IXOFF;
fe1ae7fd	162	/* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
adc8d746	163	tty->termios.c_oflag &= ~ONLCR;
fe1ae7fd	164	}
1da177e4	165
a509a7e4	166	static int kobil_open(struct tty_struct tty, struct usb_serial_port port)
1da177e4	167	{
b12f7a1c	168	struct device *dev = &port->dev;
94d0f7ea	169	int result = 0;
1da177e4 LT	170	struct kobil_private *priv;
	171	unsigned char *transfer_buffer;
	172	int transfer_buffer_length = 8;
1da177e4	173
1da177e4	174	priv = usb_get_serial_port_data(port);
1da177e4	175
dee0a7cc	176	/* allocate memory for transfer buffer */
80b6ca48	177	transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
dee0a7cc	178	if (!transfer_buffer)
1da177e4	179	return -ENOMEM;
dee0a7cc	180
dee0a7cc AC	181	/* get hardware version */
	182	result = usb_control_msg(port->serial->dev,
	183	usb_rcvctrlpipe(port->serial->dev, 0),
	184	SUSBCRequest_GetMisc,
	185	USB_TYPE_VENDOR \| USB_RECIP_ENDPOINT \| USB_DIR_IN,
	186	SUSBCR_MSC_GetHWVersion,
	187	0,
	188	transfer_buffer,
	189	transfer_buffer_length,
	190	KOBIL_TIMEOUT
	191	);
b12f7a1c	192	dev_dbg(dev, "%s - Send get_HW_version URB returns: %i\n", __func__, result);
8faaaead	193	dev_dbg(dev, "Hardware version: %i.%i.%i\n", transfer_buffer[0],
b12f7a1c	194	transfer_buffer[1], transfer_buffer[2]);
dee0a7cc AC	195
	196	/* get firmware version */
	197	result = usb_control_msg(port->serial->dev,
	198	usb_rcvctrlpipe(port->serial->dev, 0),
	199	SUSBCRequest_GetMisc,
	200	USB_TYPE_VENDOR \| USB_RECIP_ENDPOINT \| USB_DIR_IN,
	201	SUSBCR_MSC_GetFWVersion,
	202	0,
	203	transfer_buffer,
	204	transfer_buffer_length,
	205	KOBIL_TIMEOUT
	206	);
b12f7a1c GKH	207	dev_dbg(dev, "%s - Send get_FW_version URB returns: %i\n", __func__, result);
	208	dev_dbg(dev, "Firmware version: %i.%i.%i\n", transfer_buffer[0],
	209	transfer_buffer[1], transfer_buffer[2]);
dee0a7cc AC	210
	211	if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID \|\|
	212	priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
	213	/* Setting Baudrate, Parity and Stopbits */
	214	result = usb_control_msg(port->serial->dev,
90419cfc	215	usb_sndctrlpipe(port->serial->dev, 0),
dee0a7cc AC	216	SUSBCRequest_SetBaudRateParityAndStopBits,
	217	USB_TYPE_VENDOR \| USB_RECIP_ENDPOINT \| USB_DIR_OUT,
	218	SUSBCR_SBR_9600 \| SUSBCR_SPASB_EvenParity \|
	219	SUSBCR_SPASB_1StopBit,
	220	0,
90419cfc	221	NULL,
dee0a7cc AC	222	0,
dee0a7cc AC	223	KOBIL_TIMEOUT
1da177e4	224	);
b12f7a1c	225	dev_dbg(dev, "%s - Send set_baudrate URB returns: %i\n", __func__, result);
dee0a7cc AC	226
	227	/* reset all queues */
	228	result = usb_control_msg(port->serial->dev,
90419cfc	229	usb_sndctrlpipe(port->serial->dev, 0),
dee0a7cc AC	230	SUSBCRequest_Misc,
	231	USB_TYPE_VENDOR \| USB_RECIP_ENDPOINT \| USB_DIR_OUT,
	232	SUSBCR_MSC_ResetAllQueues,
	233	0,
90419cfc	234	NULL,
dee0a7cc AC	235	0,
dee0a7cc AC	236	KOBIL_TIMEOUT
1da177e4	237	);
b12f7a1c	238	dev_dbg(dev, "%s - Send reset_all_queues URB returns: %i\n", __func__, result);
1da177e4	239	}
dee0a7cc AC	240	if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID \|\|
dee0a7cc AC	241	priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID \|\|
1da177e4	242	priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
dee0a7cc	243	/* start reading (Adapter B 'cause PNP string) */
811c3707	244	result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
b12f7a1c	245	dev_dbg(dev, "%s - Send read URB returns: %i\n", __func__, result);
1da177e4 LT	246	}
	247
	248	kfree(transfer_buffer);
	249	return 0;
	250	}
	251
	252
335f8514	253	static void kobil_close(struct usb_serial_port *port)
1da177e4	254	{
335f8514	255	/* FIXME: Add rts/dtr methods */
feb0a36a	256	usb_kill_urb(port->interrupt_out_urb);
5505c226	257	usb_kill_urb(port->interrupt_in_urb);
1da177e4 LT	258	}
	259
	260
6fcdcf04	261	static void kobil_read_int_callback(struct urb *urb)
1da177e4	262	{
1da177e4	263	int result;
6fcdcf04	264	struct usb_serial_port *port = urb->context;
6fcdcf04 GKH	265	unsigned char *data = urb->transfer_buffer;
6fcdcf04 GKH	266	int status = urb->status;
1da177e4	267
6fcdcf04	268	if (status) {
b12f7a1c	269	dev_dbg(&port->dev, "%s - Read int status not zero: %d\n", __func__, status);
1da177e4 LT	270	return;
1da177e4 LT	271	}
6fcdcf04	272
2e124b4a	273	if (urb->actual_length) {
8e34c6c2 JH	274	usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
8e34c6c2 JH	275	data);
05c7cd39	276	tty_insert_flip_string(&port->port, data, urb->actual_length);
2e124b4a	277	tty_flip_buffer_push(&port->port);
1da177e4	278	}
1da177e4	279
6fcdcf04	280	result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
b12f7a1c	281	dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
1da177e4 LT	282	}
	283
	284
feb0a36a	285	static void kobil_write_int_callback(struct urb *urb)
1da177e4 LT	286	{
	287	}
	288
	289
dee0a7cc	290	static int kobil_write(struct tty_struct tty, struct usb_serial_port port,
1da177e4 LT	291	const unsigned char *buf, int count)
	292	{
	293	int length = 0;
	294	int result = 0;
	295	int todo = 0;
dee0a7cc	296	struct kobil_private *priv;
1da177e4 LT	297
1da177e4 LT	298	if (count == 0) {
b12f7a1c	299	dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
1da177e4 LT	300	return 0;
	301	}
	302
	303	priv = usb_get_serial_port_data(port);
	304
	305	if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
b12f7a1c	306	dev_dbg(&port->dev, "%s - Error: write request bigger than buffer size\n", __func__);
1da177e4 LT	307	return -ENOMEM;
	308	}
	309
dee0a7cc AC	310	/* Copy data to buffer */
dee0a7cc AC	311	memcpy(priv->buf + priv->filled, buf, count);
59d33f2f	312	usb_serial_debug_data(&port->dev, __func__, count, priv->buf + priv->filled);
1da177e4 LT	313	priv->filled = priv->filled + count;
1da177e4 LT	314
dee0a7cc AC	315	/* only send complete block. TWIN, KAAN SIM and adapter K
	316	use the same protocol. */
	317	if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) \|\|
	318	((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
	319	/* stop reading (except TWIN and KAAN SIM) */
	320	if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
	321	\|\| (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
1da177e4 LT	322	usb_kill_urb(port->interrupt_in_urb);
	323
	324	todo = priv->filled - priv->cur_pos;
	325
dee0a7cc AC	326	while (todo > 0) {
dee0a7cc AC	327	/* max 8 byte in one urb (endpoint size) */
feb0a36a	328	length = min(todo, port->interrupt_out_size);
dee0a7cc	329	/* copy data to transfer buffer */
feb0a36a	330	memcpy(port->interrupt_out_buffer,
dee0a7cc	331	priv->buf + priv->cur_pos, length);
feb0a36a	332	port->interrupt_out_urb->transfer_buffer_length = length;
1da177e4 LT	333
1da177e4 LT	334	priv->cur_pos = priv->cur_pos + length;
19125283 JH	335	result = usb_submit_urb(port->interrupt_out_urb,
19125283 JH	336	GFP_ATOMIC);
b12f7a1c	337	dev_dbg(&port->dev, "%s - Send write URB returns: %i\n", __func__, result);
1da177e4 LT	338	todo = priv->filled - priv->cur_pos;
1da177e4 LT	339
dee0a7cc	340	if (todo > 0)
1da177e4	341	msleep(24);
dee0a7cc	342	}
1da177e4	343
1da177e4 LT	344	priv->filled = 0;
	345	priv->cur_pos = 0;
	346
dee0a7cc AC	347	/* start reading (except TWIN and KAAN SIM) */
	348	if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID \|\|
	349	priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
dee0a7cc	350	result = usb_submit_urb(port->interrupt_in_urb,
19125283	351	GFP_ATOMIC);
b12f7a1c	352	dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
1da177e4 LT	353	}
	354	}
	355	return count;
	356	}
	357
	358
dee0a7cc	359	static int kobil_write_room(struct tty_struct *tty)
1da177e4	360	{
95da310e	361	/* FIXME */
1da177e4 LT	362	return 8;
	363	}
	364
	365
60b33c13	366	static int kobil_tiocmget(struct tty_struct *tty)
1da177e4	367	{
95da310e	368	struct usb_serial_port *port = tty->driver_data;
dee0a7cc	369	struct kobil_private *priv;
1da177e4 LT	370	int result;
	371	unsigned char *transfer_buffer;
	372	int transfer_buffer_length = 8;
	373
	374	priv = usb_get_serial_port_data(port);
dee0a7cc AC	375	if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
	376	\|\| priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
	377	/* This device doesn't support ioctl calls */
1da177e4 LT	378	return -EINVAL;
	379	}
	380
dee0a7cc	381	/* allocate memory for transfer buffer */
80b6ca48	382	transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
dee0a7cc	383	if (!transfer_buffer)
1da177e4	384	return -ENOMEM;
1da177e4	385
dee0a7cc AC	386	result = usb_control_msg(port->serial->dev,
	387	usb_rcvctrlpipe(port->serial->dev, 0),
	388	SUSBCRequest_GetStatusLineState,
	389	USB_TYPE_VENDOR \| USB_RECIP_ENDPOINT \| USB_DIR_IN,
	390	0,
	391	0,
	392	transfer_buffer,
	393	transfer_buffer_length,
	394	KOBIL_TIMEOUT);
	395
606cd7ee JH	396	dev_dbg(&port->dev, "Send get_status_line_state URB returns: %i\n",
	397	result);
	398	if (result < 1) {
	399	if (result >= 0)
	400	result = -EIO;
	401	goto out_free;
	402	}
	403
	404	dev_dbg(&port->dev, "Statusline: %02x\n", transfer_buffer[0]);
1da177e4	405
a40d8540 AC	406	result = 0;
	407	if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
	408	result = TIOCM_DSR;
606cd7ee	409	out_free:
1da177e4	410	kfree(transfer_buffer);
a40d8540	411	return result;
1da177e4 LT	412	}
1da177e4 LT	413
20b9d177	414	static int kobil_tiocmset(struct tty_struct *tty,
1da177e4 LT	415	unsigned int set, unsigned int clear)
1da177e4 LT	416	{
95da310e	417	struct usb_serial_port *port = tty->driver_data;
b12f7a1c	418	struct device *dev = &port->dev;
dee0a7cc	419	struct kobil_private *priv;
1da177e4 LT	420	int result;
	421	int dtr = 0;
	422	int rts = 0;
1da177e4	423
a40d8540	424	/* FIXME: locking ? */
1da177e4	425	priv = usb_get_serial_port_data(port);
dee0a7cc AC	426	if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
	427	\|\| priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
	428	/* This device doesn't support ioctl calls */
1da177e4 LT	429	return -EINVAL;
	430	}
	431
1da177e4 LT	432	if (set & TIOCM_RTS)
	433	rts = 1;
	434	if (set & TIOCM_DTR)
	435	dtr = 1;
	436	if (clear & TIOCM_RTS)
	437	rts = 0;
	438	if (clear & TIOCM_DTR)
	439	dtr = 0;
	440
	441	if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
	442	if (dtr != 0)
b12f7a1c	443	dev_dbg(dev, "%s - Setting DTR\n", __func__);
1da177e4	444	else
b12f7a1c	445	dev_dbg(dev, "%s - Clearing DTR\n", __func__);
dee0a7cc	446	result = usb_control_msg(port->serial->dev,
90419cfc	447	usb_sndctrlpipe(port->serial->dev, 0),
dee0a7cc AC	448	SUSBCRequest_SetStatusLinesOrQueues,
	449	USB_TYPE_VENDOR \| USB_RECIP_ENDPOINT \| USB_DIR_OUT,
	450	((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
	451	0,
90419cfc	452	NULL,
dee0a7cc AC	453	0,
dee0a7cc AC	454	KOBIL_TIMEOUT);
1da177e4 LT	455	} else {
1da177e4 LT	456	if (rts != 0)
b12f7a1c	457	dev_dbg(dev, "%s - Setting RTS\n", __func__);
1da177e4	458	else
b12f7a1c	459	dev_dbg(dev, "%s - Clearing RTS\n", __func__);
dee0a7cc	460	result = usb_control_msg(port->serial->dev,
90419cfc	461	usb_sndctrlpipe(port->serial->dev, 0),
dee0a7cc AC	462	SUSBCRequest_SetStatusLinesOrQueues,
	463	USB_TYPE_VENDOR \| USB_RECIP_ENDPOINT \| USB_DIR_OUT,
	464	((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
	465	0,
90419cfc	466	NULL,
dee0a7cc AC	467	0,
dee0a7cc AC	468	KOBIL_TIMEOUT);
1da177e4	469	}
b12f7a1c	470	dev_dbg(dev, "%s - Send set_status_line URB returns: %i\n", __func__, result);
1da177e4 LT	471	return (result < 0) ? result : 0;
	472	}
	473
95da310e AC	474	static void kobil_set_termios(struct tty_struct *tty,
95da310e AC	475	struct usb_serial_port port, struct ktermios old)
1da177e4	476	{
dee0a7cc	477	struct kobil_private *priv;
1da177e4 LT	478	int result;
1da177e4 LT	479	unsigned short urb_val = 0;
adc8d746	480	int c_cflag = tty->termios.c_cflag;
94d0f7ea	481	speed_t speed;
1da177e4 LT	482
1da177e4 LT	483	priv = usb_get_serial_port_data(port);
dee0a7cc	484	if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID \|\|
b31f658b	485	priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
dee0a7cc	486	/* This device doesn't support ioctl calls */
6a6c8b36	487	tty_termios_copy_hw(&tty->termios, old);
94d0f7ea	488	return;
b31f658b	489	}
1da177e4	490
dee0a7cc AC	491	speed = tty_get_baud_rate(tty);
	492	switch (speed) {
	493	case 1200:
	494	urb_val = SUSBCR_SBR_1200;
	495	break;
	496	default:
	497	speed = 9600;
fe1f68a0	498	/* fall through */
dee0a7cc AC	499	case 9600:
	500	urb_val = SUSBCR_SBR_9600;
	501	break;
94d0f7ea	502	}
dee0a7cc AC	503	urb_val \|= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
dee0a7cc AC	504	SUSBCR_SPASB_1StopBit;
94d0f7ea	505	if (c_cflag & PARENB) {
96679f6b	506	if (c_cflag & PARODD)
94d0f7ea	507	urb_val \|= SUSBCR_SPASB_OddParity;
96679f6b	508	else
94d0f7ea	509	urb_val \|= SUSBCR_SPASB_EvenParity;
96679f6b	510	} else
94d0f7ea	511	urb_val \|= SUSBCR_SPASB_NoParity;
adc8d746	512	tty->termios.c_cflag &= ~CMSPAR;
95da310e	513	tty_encode_baud_rate(tty, speed, speed);
1da177e4	514
dee0a7cc	515	result = usb_control_msg(port->serial->dev,
90419cfc	516	usb_sndctrlpipe(port->serial->dev, 0),
dee0a7cc AC	517	SUSBCRequest_SetBaudRateParityAndStopBits,
	518	USB_TYPE_VENDOR \| USB_RECIP_ENDPOINT \| USB_DIR_OUT,
	519	urb_val,
	520	0,
96679f6b	521	NULL,
dee0a7cc AC	522	0,
dee0a7cc AC	523	KOBIL_TIMEOUT
94d0f7ea	524	);
94d0f7ea	525	}
1da177e4	526
00a0d0d6	527	static int kobil_ioctl(struct tty_struct *tty,
dee0a7cc	528	unsigned int cmd, unsigned long arg)
94d0f7ea	529	{
95da310e	530	struct usb_serial_port *port = tty->driver_data;
dee0a7cc	531	struct kobil_private *priv = usb_get_serial_port_data(port);
94d0f7ea AC	532	int result;
94d0f7ea AC	533
dee0a7cc AC	534	if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID \|\|
	535	priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
	536	/* This device doesn't support ioctl calls */
b31f658b	537	return -ENOIOCTLCMD;
1da177e4	538
94d0f7ea	539	switch (cmd) {
95da310e	540	case TCFLSH:
dee0a7cc	541	result = usb_control_msg(port->serial->dev,
90419cfc	542	usb_sndctrlpipe(port->serial->dev, 0),
dee0a7cc AC	543	SUSBCRequest_Misc,
	544	USB_TYPE_VENDOR \| USB_RECIP_ENDPOINT \| USB_DIR_OUT,
	545	SUSBCR_MSC_ResetAllQueues,
	546	0,
90419cfc	547	NULL,
dee0a7cc AC	548	0,
dee0a7cc AC	549	KOBIL_TIMEOUT
1da177e4	550	);
dee0a7cc	551
b12f7a1c	552	dev_dbg(&port->dev,
d9a38a87 JH	553	"%s - Send reset_all_queues (FLUSH) URB returns: %i\n",
d9a38a87 JH	554	__func__, result);
95da310e	555	return (result < 0) ? -EIO: 0;
94d0f7ea AC	556	default:
94d0f7ea AC	557	return -ENOIOCTLCMD;
1da177e4	558	}
1da177e4 LT	559	}
1da177e4 LT	560
68e24113	561	module_usb_serial_driver(serial_drivers, id_table);
1da177e4	562
dee0a7cc AC	563	MODULE_AUTHOR(DRIVER_AUTHOR);
	564	MODULE_DESCRIPTION(DRIVER_DESC);
	565	MODULE_LICENSE("GPL");