tizen 2.4 release
[profile/mobile/platform/kernel/linux-3.10-sc7730.git] / 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/init.h>
21 #include <linux/slab.h>
22 #include <linux/tty.h>
23 #include <linux/tty_driver.h>
24 #include <linux/tty_flip.h>
25 #include <linux/module.h>
26 #include <linux/spinlock.h>
27 #include <linux/uaccess.h>
28 #include <linux/usb.h>
29 #include <linux/usb/serial.h>
30
31 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Gary Brubaker <xavyer@ix.netcom.com>"
32 #define DRIVER_DESC "USB Empeg Mark I/II Driver"
33
34 #define EMPEG_VENDOR_ID                 0x084f
35 #define EMPEG_PRODUCT_ID                0x0001
36
37 /* function prototypes for an empeg-car player */
38 static int  empeg_startup(struct usb_serial *serial);
39 static void empeg_init_termios(struct tty_struct *tty);
40
41 static const struct usb_device_id id_table[] = {
42         { USB_DEVICE(EMPEG_VENDOR_ID, EMPEG_PRODUCT_ID) },
43         { }                                     /* Terminating entry */
44 };
45
46 MODULE_DEVICE_TABLE(usb, id_table);
47
48 static struct usb_serial_driver empeg_device = {
49         .driver = {
50                 .owner =        THIS_MODULE,
51                 .name =         "empeg",
52         },
53         .id_table =             id_table,
54         .num_ports =            1,
55         .bulk_out_size =        256,
56         .throttle =             usb_serial_generic_throttle,
57         .unthrottle =           usb_serial_generic_unthrottle,
58         .attach =               empeg_startup,
59         .init_termios =         empeg_init_termios,
60 };
61
62 static struct usb_serial_driver * const serial_drivers[] = {
63         &empeg_device, NULL
64 };
65
66 static int empeg_startup(struct usb_serial *serial)
67 {
68         int r;
69
70         if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
71                 dev_err(&serial->dev->dev, "active config #%d != 1 ??\n",
72                         serial->dev->actconfig->desc.bConfigurationValue);
73                 return -ENODEV;
74         }
75
76         r = usb_reset_configuration(serial->dev);
77
78         /* continue on with initialization */
79         return r;
80 }
81
82 static void empeg_init_termios(struct tty_struct *tty)
83 {
84         struct ktermios *termios = &tty->termios;
85
86         /*
87          * The empeg-car player wants these particular tty settings.
88          * You could, for example, change the baud rate, however the
89          * player only supports 115200 (currently), so there is really
90          * no point in support for changes to the tty settings.
91          * (at least for now)
92          *
93          * The default requirements for this device are:
94          */
95         termios->c_iflag
96                 &= ~(IGNBRK     /* disable ignore break */
97                 | BRKINT        /* disable break causes interrupt */
98                 | PARMRK        /* disable mark parity errors */
99                 | ISTRIP        /* disable clear high bit of input characters */
100                 | INLCR         /* disable translate NL to CR */
101                 | IGNCR         /* disable ignore CR */
102                 | ICRNL         /* disable translate CR to NL */
103                 | IXON);        /* disable enable XON/XOFF flow control */
104
105         termios->c_oflag
106                 &= ~OPOST;      /* disable postprocess output characters */
107
108         termios->c_lflag
109                 &= ~(ECHO       /* disable echo input characters */
110                 | ECHONL        /* disable echo new line */
111                 | ICANON        /* disable erase, kill, werase, and rprnt special characters */
112                 | ISIG          /* disable interrupt, quit, and suspend special characters */
113                 | IEXTEN);      /* disable non-POSIX special characters */
114
115         termios->c_cflag
116                 &= ~(CSIZE      /* no size */
117                 | PARENB        /* disable parity bit */
118                 | CBAUD);       /* clear current baud rate */
119
120         termios->c_cflag
121                 |= CS8;         /* character size 8 bits */
122
123         tty_encode_baud_rate(tty, 115200, 115200);
124 }
125
126 module_usb_serial_driver(serial_drivers, id_table);
127
128 MODULE_AUTHOR(DRIVER_AUTHOR);
129 MODULE_DESCRIPTION(DRIVER_DESC);
130 MODULE_LICENSE("GPL");