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571 lines
16 KiB
571 lines
16 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* KOBIL USB Smart Card Terminal Driver |
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* |
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* Copyright (C) 2002 KOBIL Systems GmbH |
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* Author: Thomas Wahrenbruch |
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* |
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* Contact: [email protected] |
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* |
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* This program is largely derived from work by the linux-usb group |
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* and associated source files. Please see the usb/serial files for |
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* individual credits and copyrights. |
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* |
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* Thanks to Greg Kroah-Hartman ([email protected]) for his help and |
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* patience. |
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* |
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* Supported readers: USB TWIN, KAAN Standard Plus and SecOVID Reader Plus |
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* (Adapter K), B1 Professional and KAAN Professional (Adapter B) |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/errno.h> |
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#include <linux/slab.h> |
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#include <linux/tty.h> |
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#include <linux/tty_driver.h> |
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#include <linux/tty_flip.h> |
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#include <linux/module.h> |
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#include <linux/spinlock.h> |
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#include <linux/uaccess.h> |
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#include <linux/usb.h> |
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#include <linux/usb/serial.h> |
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#include <linux/ioctl.h> |
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#include "kobil_sct.h" |
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#define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com" |
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#define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)" |
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#define KOBIL_VENDOR_ID 0x0D46 |
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#define KOBIL_ADAPTER_B_PRODUCT_ID 0x2011 |
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#define KOBIL_ADAPTER_K_PRODUCT_ID 0x2012 |
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#define KOBIL_USBTWIN_PRODUCT_ID 0x0078 |
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#define KOBIL_KAAN_SIM_PRODUCT_ID 0x0081 |
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#define KOBIL_TIMEOUT 500 |
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#define KOBIL_BUF_LENGTH 300 |
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/* Function prototypes */ |
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static int kobil_port_probe(struct usb_serial_port *probe); |
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static void kobil_port_remove(struct usb_serial_port *probe); |
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static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port); |
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static void kobil_close(struct usb_serial_port *port); |
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static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port, |
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const unsigned char *buf, int count); |
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static int kobil_write_room(struct tty_struct *tty); |
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static int kobil_ioctl(struct tty_struct *tty, |
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unsigned int cmd, unsigned long arg); |
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static int kobil_tiocmget(struct tty_struct *tty); |
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static int kobil_tiocmset(struct tty_struct *tty, |
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unsigned int set, unsigned int clear); |
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static void kobil_read_int_callback(struct urb *urb); |
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static void kobil_write_int_callback(struct urb *urb); |
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static void kobil_set_termios(struct tty_struct *tty, |
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struct usb_serial_port *port, struct ktermios *old); |
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static void kobil_init_termios(struct tty_struct *tty); |
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static const struct usb_device_id id_table[] = { |
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{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) }, |
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{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) }, |
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{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) }, |
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{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) }, |
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{ } /* Terminating entry */ |
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}; |
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MODULE_DEVICE_TABLE(usb, id_table); |
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static struct usb_serial_driver kobil_device = { |
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.driver = { |
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.owner = THIS_MODULE, |
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.name = "kobil", |
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}, |
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.description = "KOBIL USB smart card terminal", |
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.id_table = id_table, |
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.num_ports = 1, |
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.num_interrupt_out = 1, |
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.port_probe = kobil_port_probe, |
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.port_remove = kobil_port_remove, |
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.ioctl = kobil_ioctl, |
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.set_termios = kobil_set_termios, |
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.init_termios = kobil_init_termios, |
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.tiocmget = kobil_tiocmget, |
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.tiocmset = kobil_tiocmset, |
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.open = kobil_open, |
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.close = kobil_close, |
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.write = kobil_write, |
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.write_room = kobil_write_room, |
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.read_int_callback = kobil_read_int_callback, |
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.write_int_callback = kobil_write_int_callback, |
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}; |
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static struct usb_serial_driver * const serial_drivers[] = { |
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&kobil_device, NULL |
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}; |
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struct kobil_private { |
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unsigned char buf[KOBIL_BUF_LENGTH]; /* buffer for the APDU to send */ |
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int filled; /* index of the last char in buf */ |
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int cur_pos; /* index of the next char to send in buf */ |
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__u16 device_type; |
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}; |
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static int kobil_port_probe(struct usb_serial_port *port) |
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{ |
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struct usb_serial *serial = port->serial; |
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struct kobil_private *priv; |
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priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL); |
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if (!priv) |
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return -ENOMEM; |
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priv->filled = 0; |
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priv->cur_pos = 0; |
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priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct); |
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switch (priv->device_type) { |
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case KOBIL_ADAPTER_B_PRODUCT_ID: |
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dev_dbg(&serial->dev->dev, "KOBIL B1 PRO / KAAN PRO detected\n"); |
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break; |
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case KOBIL_ADAPTER_K_PRODUCT_ID: |
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dev_dbg(&serial->dev->dev, "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n"); |
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break; |
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case KOBIL_USBTWIN_PRODUCT_ID: |
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dev_dbg(&serial->dev->dev, "KOBIL USBTWIN detected\n"); |
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break; |
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case KOBIL_KAAN_SIM_PRODUCT_ID: |
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dev_dbg(&serial->dev->dev, "KOBIL KAAN SIM detected\n"); |
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break; |
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} |
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usb_set_serial_port_data(port, priv); |
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return 0; |
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} |
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static void kobil_port_remove(struct usb_serial_port *port) |
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{ |
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struct kobil_private *priv; |
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priv = usb_get_serial_port_data(port); |
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kfree(priv); |
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} |
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static void kobil_init_termios(struct tty_struct *tty) |
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{ |
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/* Default to echo off and other sane device settings */ |
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tty->termios.c_lflag = 0; |
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tty->termios.c_iflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE); |
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tty->termios.c_iflag |= IGNBRK | IGNPAR | IXOFF; |
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/* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */ |
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tty->termios.c_oflag &= ~ONLCR; |
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} |
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static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port) |
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{ |
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struct device *dev = &port->dev; |
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int result = 0; |
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struct kobil_private *priv; |
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unsigned char *transfer_buffer; |
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int transfer_buffer_length = 8; |
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priv = usb_get_serial_port_data(port); |
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/* allocate memory for transfer buffer */ |
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transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL); |
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if (!transfer_buffer) |
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return -ENOMEM; |
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|
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/* get hardware version */ |
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result = usb_control_msg(port->serial->dev, |
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usb_rcvctrlpipe(port->serial->dev, 0), |
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SUSBCRequest_GetMisc, |
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USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN, |
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SUSBCR_MSC_GetHWVersion, |
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0, |
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transfer_buffer, |
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transfer_buffer_length, |
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KOBIL_TIMEOUT |
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); |
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dev_dbg(dev, "%s - Send get_HW_version URB returns: %i\n", __func__, result); |
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if (result >= 3) { |
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dev_dbg(dev, "Hardware version: %i.%i.%i\n", transfer_buffer[0], |
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transfer_buffer[1], transfer_buffer[2]); |
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} |
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/* get firmware version */ |
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result = usb_control_msg(port->serial->dev, |
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usb_rcvctrlpipe(port->serial->dev, 0), |
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SUSBCRequest_GetMisc, |
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USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN, |
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SUSBCR_MSC_GetFWVersion, |
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0, |
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transfer_buffer, |
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transfer_buffer_length, |
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KOBIL_TIMEOUT |
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); |
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dev_dbg(dev, "%s - Send get_FW_version URB returns: %i\n", __func__, result); |
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if (result >= 3) { |
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dev_dbg(dev, "Firmware version: %i.%i.%i\n", transfer_buffer[0], |
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transfer_buffer[1], transfer_buffer[2]); |
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} |
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if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || |
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priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) { |
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/* Setting Baudrate, Parity and Stopbits */ |
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result = usb_control_msg(port->serial->dev, |
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usb_sndctrlpipe(port->serial->dev, 0), |
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SUSBCRequest_SetBaudRateParityAndStopBits, |
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USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT, |
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SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | |
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SUSBCR_SPASB_1StopBit, |
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0, |
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NULL, |
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0, |
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KOBIL_TIMEOUT |
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); |
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dev_dbg(dev, "%s - Send set_baudrate URB returns: %i\n", __func__, result); |
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/* reset all queues */ |
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result = usb_control_msg(port->serial->dev, |
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usb_sndctrlpipe(port->serial->dev, 0), |
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SUSBCRequest_Misc, |
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USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT, |
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SUSBCR_MSC_ResetAllQueues, |
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0, |
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NULL, |
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0, |
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KOBIL_TIMEOUT |
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); |
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dev_dbg(dev, "%s - Send reset_all_queues URB returns: %i\n", __func__, result); |
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} |
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if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || |
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priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || |
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priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) { |
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/* start reading (Adapter B 'cause PNP string) */ |
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result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
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dev_dbg(dev, "%s - Send read URB returns: %i\n", __func__, result); |
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} |
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kfree(transfer_buffer); |
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return 0; |
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} |
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static void kobil_close(struct usb_serial_port *port) |
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{ |
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/* FIXME: Add rts/dtr methods */ |
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usb_kill_urb(port->interrupt_out_urb); |
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usb_kill_urb(port->interrupt_in_urb); |
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} |
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static void kobil_read_int_callback(struct urb *urb) |
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{ |
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int result; |
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struct usb_serial_port *port = urb->context; |
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unsigned char *data = urb->transfer_buffer; |
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int status = urb->status; |
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if (status) { |
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dev_dbg(&port->dev, "%s - Read int status not zero: %d\n", __func__, status); |
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return; |
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} |
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if (urb->actual_length) { |
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usb_serial_debug_data(&port->dev, __func__, urb->actual_length, |
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data); |
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tty_insert_flip_string(&port->port, data, urb->actual_length); |
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tty_flip_buffer_push(&port->port); |
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} |
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result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC); |
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dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result); |
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} |
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static void kobil_write_int_callback(struct urb *urb) |
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{ |
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} |
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static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port, |
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const unsigned char *buf, int count) |
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{ |
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int length = 0; |
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int result = 0; |
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int todo = 0; |
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struct kobil_private *priv; |
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if (count == 0) { |
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dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__); |
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return 0; |
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} |
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priv = usb_get_serial_port_data(port); |
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if (count > (KOBIL_BUF_LENGTH - priv->filled)) { |
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dev_dbg(&port->dev, "%s - Error: write request bigger than buffer size\n", __func__); |
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return -ENOMEM; |
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} |
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/* Copy data to buffer */ |
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memcpy(priv->buf + priv->filled, buf, count); |
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usb_serial_debug_data(&port->dev, __func__, count, priv->buf + priv->filled); |
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priv->filled = priv->filled + count; |
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|
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/* only send complete block. TWIN, KAAN SIM and adapter K |
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use the same protocol. */ |
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if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) || |
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((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) { |
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/* stop reading (except TWIN and KAAN SIM) */ |
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if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) |
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|| (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID)) |
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usb_kill_urb(port->interrupt_in_urb); |
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todo = priv->filled - priv->cur_pos; |
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while (todo > 0) { |
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/* max 8 byte in one urb (endpoint size) */ |
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length = min(todo, port->interrupt_out_size); |
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/* copy data to transfer buffer */ |
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memcpy(port->interrupt_out_buffer, |
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priv->buf + priv->cur_pos, length); |
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port->interrupt_out_urb->transfer_buffer_length = length; |
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priv->cur_pos = priv->cur_pos + length; |
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result = usb_submit_urb(port->interrupt_out_urb, |
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GFP_ATOMIC); |
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dev_dbg(&port->dev, "%s - Send write URB returns: %i\n", __func__, result); |
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todo = priv->filled - priv->cur_pos; |
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if (todo > 0) |
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msleep(24); |
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} |
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priv->filled = 0; |
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priv->cur_pos = 0; |
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/* start reading (except TWIN and KAAN SIM) */ |
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if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || |
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priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) { |
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result = usb_submit_urb(port->interrupt_in_urb, |
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GFP_ATOMIC); |
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dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result); |
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} |
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} |
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return count; |
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} |
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static int kobil_write_room(struct tty_struct *tty) |
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{ |
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/* FIXME */ |
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return 8; |
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} |
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static int kobil_tiocmget(struct tty_struct *tty) |
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{ |
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struct usb_serial_port *port = tty->driver_data; |
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struct kobil_private *priv; |
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int result; |
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unsigned char *transfer_buffer; |
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int transfer_buffer_length = 8; |
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priv = usb_get_serial_port_data(port); |
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if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID |
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|| priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) { |
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/* This device doesn't support ioctl calls */ |
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return -EINVAL; |
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} |
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/* allocate memory for transfer buffer */ |
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transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL); |
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if (!transfer_buffer) |
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return -ENOMEM; |
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result = usb_control_msg(port->serial->dev, |
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usb_rcvctrlpipe(port->serial->dev, 0), |
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SUSBCRequest_GetStatusLineState, |
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USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN, |
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0, |
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0, |
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transfer_buffer, |
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transfer_buffer_length, |
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KOBIL_TIMEOUT); |
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dev_dbg(&port->dev, "Send get_status_line_state URB returns: %i\n", |
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result); |
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if (result < 1) { |
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if (result >= 0) |
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result = -EIO; |
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goto out_free; |
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} |
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dev_dbg(&port->dev, "Statusline: %02x\n", transfer_buffer[0]); |
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result = 0; |
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if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0) |
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result = TIOCM_DSR; |
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out_free: |
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kfree(transfer_buffer); |
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return result; |
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} |
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static int kobil_tiocmset(struct tty_struct *tty, |
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unsigned int set, unsigned int clear) |
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{ |
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struct usb_serial_port *port = tty->driver_data; |
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struct device *dev = &port->dev; |
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struct kobil_private *priv; |
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int result; |
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int dtr = 0; |
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int rts = 0; |
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|
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/* FIXME: locking ? */ |
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priv = usb_get_serial_port_data(port); |
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if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID |
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|| priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) { |
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/* This device doesn't support ioctl calls */ |
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return -EINVAL; |
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} |
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|
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if (set & TIOCM_RTS) |
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rts = 1; |
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if (set & TIOCM_DTR) |
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dtr = 1; |
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if (clear & TIOCM_RTS) |
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rts = 0; |
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if (clear & TIOCM_DTR) |
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dtr = 0; |
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if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) { |
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if (dtr != 0) |
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dev_dbg(dev, "%s - Setting DTR\n", __func__); |
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else |
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dev_dbg(dev, "%s - Clearing DTR\n", __func__); |
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result = usb_control_msg(port->serial->dev, |
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usb_sndctrlpipe(port->serial->dev, 0), |
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SUSBCRequest_SetStatusLinesOrQueues, |
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USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT, |
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((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR), |
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0, |
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NULL, |
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0, |
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KOBIL_TIMEOUT); |
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} else { |
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if (rts != 0) |
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dev_dbg(dev, "%s - Setting RTS\n", __func__); |
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else |
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dev_dbg(dev, "%s - Clearing RTS\n", __func__); |
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result = usb_control_msg(port->serial->dev, |
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usb_sndctrlpipe(port->serial->dev, 0), |
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SUSBCRequest_SetStatusLinesOrQueues, |
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USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT, |
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((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS), |
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0, |
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NULL, |
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0, |
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KOBIL_TIMEOUT); |
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} |
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dev_dbg(dev, "%s - Send set_status_line URB returns: %i\n", __func__, result); |
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return (result < 0) ? result : 0; |
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} |
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|
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static void kobil_set_termios(struct tty_struct *tty, |
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struct usb_serial_port *port, struct ktermios *old) |
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{ |
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struct kobil_private *priv; |
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int result; |
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unsigned short urb_val = 0; |
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int c_cflag = tty->termios.c_cflag; |
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speed_t speed; |
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|
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priv = usb_get_serial_port_data(port); |
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if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || |
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priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) { |
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/* This device doesn't support ioctl calls */ |
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tty_termios_copy_hw(&tty->termios, old); |
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return; |
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} |
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speed = tty_get_baud_rate(tty); |
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switch (speed) { |
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case 1200: |
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urb_val = SUSBCR_SBR_1200; |
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break; |
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default: |
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speed = 9600; |
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fallthrough; |
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case 9600: |
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urb_val = SUSBCR_SBR_9600; |
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break; |
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} |
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urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : |
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SUSBCR_SPASB_1StopBit; |
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if (c_cflag & PARENB) { |
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if (c_cflag & PARODD) |
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urb_val |= SUSBCR_SPASB_OddParity; |
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else |
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urb_val |= SUSBCR_SPASB_EvenParity; |
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} else |
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urb_val |= SUSBCR_SPASB_NoParity; |
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tty->termios.c_cflag &= ~CMSPAR; |
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tty_encode_baud_rate(tty, speed, speed); |
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|
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result = usb_control_msg(port->serial->dev, |
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usb_sndctrlpipe(port->serial->dev, 0), |
|
SUSBCRequest_SetBaudRateParityAndStopBits, |
|
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT, |
|
urb_val, |
|
0, |
|
NULL, |
|
0, |
|
KOBIL_TIMEOUT |
|
); |
|
if (result) { |
|
dev_err(&port->dev, "failed to update line settings: %d\n", |
|
result); |
|
} |
|
} |
|
|
|
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");
|
|
|