Version:  2.0.40 2.2.26 2.4.37 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16

Linux/drivers/usb/serial/empeg.c

  1 /*
  2  * USB Empeg empeg-car player driver
  3  *
  4  *      Copyright (C) 2000, 2001
  5  *          Gary Brubaker (xavyer@ix.netcom.com)
  6  *
  7  *      Copyright (C) 1999 - 2001
  8  *          Greg Kroah-Hartman (greg@kroah.com)
  9  *
 10  *      This program is free software; you can redistribute it and/or modify
 11  *      it under the terms of the GNU General Public License, as published by
 12  *      the Free Software Foundation, version 2.
 13  *
 14  * See Documentation/usb/usb-serial.txt for more information on using this
 15  * driver
 16  */
 17 
 18 #include <linux/kernel.h>
 19 #include <linux/errno.h>
 20 #include <linux/slab.h>
 21 #include <linux/tty.h>
 22 #include <linux/tty_driver.h>
 23 #include <linux/tty_flip.h>
 24 #include <linux/module.h>
 25 #include <linux/spinlock.h>
 26 #include <linux/uaccess.h>
 27 #include <linux/usb.h>
 28 #include <linux/usb/serial.h>
 29 
 30 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Gary Brubaker <xavyer@ix.netcom.com>"
 31 #define DRIVER_DESC "USB Empeg Mark I/II Driver"
 32 
 33 #define EMPEG_VENDOR_ID                 0x084f
 34 #define EMPEG_PRODUCT_ID                0x0001
 35 
 36 /* function prototypes for an empeg-car player */
 37 static int  empeg_startup(struct usb_serial *serial);
 38 static void empeg_init_termios(struct tty_struct *tty);
 39 
 40 static const struct usb_device_id id_table[] = {
 41         { USB_DEVICE(EMPEG_VENDOR_ID, EMPEG_PRODUCT_ID) },
 42         { }                                     /* Terminating entry */
 43 };
 44 
 45 MODULE_DEVICE_TABLE(usb, id_table);
 46 
 47 static struct usb_serial_driver empeg_device = {
 48         .driver = {
 49                 .owner =        THIS_MODULE,
 50                 .name =         "empeg",
 51         },
 52         .id_table =             id_table,
 53         .num_ports =            1,
 54         .bulk_out_size =        256,
 55         .throttle =             usb_serial_generic_throttle,
 56         .unthrottle =           usb_serial_generic_unthrottle,
 57         .attach =               empeg_startup,
 58         .init_termios =         empeg_init_termios,
 59 };
 60 
 61 static struct usb_serial_driver * const serial_drivers[] = {
 62         &empeg_device, NULL
 63 };
 64 
 65 static int empeg_startup(struct usb_serial *serial)
 66 {
 67         int r;
 68 
 69         if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
 70                 dev_err(&serial->dev->dev, "active config #%d != 1 ??\n",
 71                         serial->dev->actconfig->desc.bConfigurationValue);
 72                 return -ENODEV;
 73         }
 74 
 75         r = usb_reset_configuration(serial->dev);
 76 
 77         /* continue on with initialization */
 78         return r;
 79 }
 80 
 81 static void empeg_init_termios(struct tty_struct *tty)
 82 {
 83         struct ktermios *termios = &tty->termios;
 84 
 85         /*
 86          * The empeg-car player wants these particular tty settings.
 87          * You could, for example, change the baud rate, however the
 88          * player only supports 115200 (currently), so there is really
 89          * no point in support for changes to the tty settings.
 90          * (at least for now)
 91          *
 92          * The default requirements for this device are:
 93          */
 94         termios->c_iflag
 95                 &= ~(IGNBRK     /* disable ignore break */
 96                 | BRKINT        /* disable break causes interrupt */
 97                 | PARMRK        /* disable mark parity errors */
 98                 | ISTRIP        /* disable clear high bit of input characters */
 99                 | INLCR         /* disable translate NL to CR */
100                 | IGNCR         /* disable ignore CR */
101                 | ICRNL         /* disable translate CR to NL */
102                 | IXON);        /* disable enable XON/XOFF flow control */
103 
104         termios->c_oflag
105                 &= ~OPOST;      /* disable postprocess output characters */
106 
107         termios->c_lflag
108                 &= ~(ECHO       /* disable echo input characters */
109                 | ECHONL        /* disable echo new line */
110                 | ICANON        /* disable erase, kill, werase, and rprnt special characters */
111                 | ISIG          /* disable interrupt, quit, and suspend special characters */
112                 | IEXTEN);      /* disable non-POSIX special characters */
113 
114         termios->c_cflag
115                 &= ~(CSIZE      /* no size */
116                 | PARENB        /* disable parity bit */
117                 | CBAUD);       /* clear current baud rate */
118 
119         termios->c_cflag
120                 |= CS8;         /* character size 8 bits */
121 
122         tty_encode_baud_rate(tty, 115200, 115200);
123 }
124 
125 module_usb_serial_driver(serial_drivers, id_table);
126 
127 MODULE_AUTHOR(DRIVER_AUTHOR);
128 MODULE_DESCRIPTION(DRIVER_DESC);
129 MODULE_LICENSE("GPL");
130 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us