]> Pileus Git - ~andy/linux/blob - drivers/usb/serial/empeg.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[~andy/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/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 static bool debug;
32
33 /*
34  * Version Information
35  */
36 #define DRIVER_VERSION "v1.3"
37 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Gary Brubaker <xavyer@ix.netcom.com>"
38 #define DRIVER_DESC "USB Empeg Mark I/II Driver"
39
40 #define EMPEG_VENDOR_ID                 0x084f
41 #define EMPEG_PRODUCT_ID                0x0001
42
43 /* function prototypes for an empeg-car player */
44 static int  empeg_startup(struct usb_serial *serial);
45 static void empeg_init_termios(struct tty_struct *tty);
46
47 static const struct usb_device_id id_table[] = {
48         { USB_DEVICE(EMPEG_VENDOR_ID, EMPEG_PRODUCT_ID) },
49         { }                                     /* Terminating entry */
50 };
51
52 MODULE_DEVICE_TABLE(usb, id_table);
53
54 static struct usb_driver empeg_driver = {
55         .name =         "empeg",
56         .probe =        usb_serial_probe,
57         .disconnect =   usb_serial_disconnect,
58         .id_table =     id_table,
59 };
60
61 static struct usb_serial_driver empeg_device = {
62         .driver = {
63                 .owner =        THIS_MODULE,
64                 .name =         "empeg",
65         },
66         .id_table =             id_table,
67         .num_ports =            1,
68         .bulk_out_size =        256,
69         .throttle =             usb_serial_generic_throttle,
70         .unthrottle =           usb_serial_generic_unthrottle,
71         .attach =               empeg_startup,
72         .init_termios =         empeg_init_termios,
73 };
74
75 static struct usb_serial_driver * const serial_drivers[] = {
76         &empeg_device, NULL
77 };
78
79 static int empeg_startup(struct usb_serial *serial)
80 {
81         int r;
82
83         dbg("%s", __func__);
84
85         if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
86                 dev_err(&serial->dev->dev, "active config #%d != 1 ??\n",
87                         serial->dev->actconfig->desc.bConfigurationValue);
88                 return -ENODEV;
89         }
90         dbg("%s - reset config", __func__);
91         r = usb_reset_configuration(serial->dev);
92
93         /* continue on with initialization */
94         return r;
95 }
96
97 static void empeg_init_termios(struct tty_struct *tty)
98 {
99         struct ktermios *termios = tty->termios;
100
101         /*
102          * The empeg-car player wants these particular tty settings.
103          * You could, for example, change the baud rate, however the
104          * player only supports 115200 (currently), so there is really
105          * no point in support for changes to the tty settings.
106          * (at least for now)
107          *
108          * The default requirements for this device are:
109          */
110         termios->c_iflag
111                 &= ~(IGNBRK     /* disable ignore break */
112                 | BRKINT        /* disable break causes interrupt */
113                 | PARMRK        /* disable mark parity errors */
114                 | ISTRIP        /* disable clear high bit of input characters */
115                 | INLCR         /* disable translate NL to CR */
116                 | IGNCR         /* disable ignore CR */
117                 | ICRNL         /* disable translate CR to NL */
118                 | IXON);        /* disable enable XON/XOFF flow control */
119
120         termios->c_oflag
121                 &= ~OPOST;      /* disable postprocess output characters */
122
123         termios->c_lflag
124                 &= ~(ECHO       /* disable echo input characters */
125                 | ECHONL        /* disable echo new line */
126                 | ICANON        /* disable erase, kill, werase, and rprnt special characters */
127                 | ISIG          /* disable interrupt, quit, and suspend special characters */
128                 | IEXTEN);      /* disable non-POSIX special characters */
129
130         termios->c_cflag
131                 &= ~(CSIZE      /* no size */
132                 | PARENB        /* disable parity bit */
133                 | CBAUD);       /* clear current baud rate */
134
135         termios->c_cflag
136                 |= CS8;         /* character size 8 bits */
137
138         tty_encode_baud_rate(tty, 115200, 115200);
139 }
140
141 module_usb_serial_driver(empeg_driver, serial_drivers);
142
143 MODULE_AUTHOR(DRIVER_AUTHOR);
144 MODULE_DESCRIPTION(DRIVER_DESC);
145 MODULE_LICENSE("GPL");
146
147 module_param(debug, bool, S_IRUGO | S_IWUSR);
148 MODULE_PARM_DESC(debug, "Debug enabled or not");