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authorGreg Kroah-Hartman <gregkh@suse.de>2006-03-17 20:40:08 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2006-03-20 17:50:03 -0500
commite9a66c64bb7033cb0180d419b2008acf7a141adc (patch)
treef5adde064f836c753ec4ae471540dbf539c22802 /drivers/usb/serial/navman.c
parentda81817fbd744ce70983f1d3c61841265003c7f4 (diff)
[PATCH] USB serial: add navman driver
Thanks to Warren Lewis <wlewis@scn.org> for the information needed to write the driver and for testing it out. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/serial/navman.c')
-rw-r--r--drivers/usb/serial/navman.c157
1 files changed, 157 insertions, 0 deletions
diff --git a/drivers/usb/serial/navman.c b/drivers/usb/serial/navman.c
new file mode 100644
index 000000000000..7f544081032e
--- /dev/null
+++ b/drivers/usb/serial/navman.c
@@ -0,0 +1,157 @@
1/*
2 * Navman Serial USB driver
3 *
4 * Copyright (C) 2006 Greg Kroah-Hartman <gregkh@suse.de>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
9 */
10
11#include <linux/kernel.h>
12#include <linux/init.h>
13#include <linux/tty.h>
14#include <linux/tty_flip.h>
15#include <linux/module.h>
16#include <linux/usb.h>
17#include "usb-serial.h"
18
19static int debug;
20
21static struct usb_device_id id_table [] = {
22 { USB_DEVICE(0x0a99, 0x0001) }, /* Talon Technology device */
23 { },
24};
25MODULE_DEVICE_TABLE(usb, id_table);
26
27static struct usb_driver navman_driver = {
28 .name = "navman",
29 .probe = usb_serial_probe,
30 .disconnect = usb_serial_disconnect,
31 .id_table = id_table,
32 .no_dynamic_id = 1,
33};
34
35static void navman_read_int_callback(struct urb *urb, struct pt_regs *regs)
36{
37 struct usb_serial_port *port = urb->context;
38 unsigned char *data = urb->transfer_buffer;
39 struct tty_struct *tty;
40 int result;
41
42 switch (urb->status) {
43 case 0:
44 /* success */
45 break;
46 case -ECONNRESET:
47 case -ENOENT:
48 case -ESHUTDOWN:
49 /* this urb is terminated, clean up */
50 dbg("%s - urb shutting down with status: %d",
51 __FUNCTION__, urb->status);
52 return;
53 default:
54 dbg("%s - nonzero urb status received: %d",
55 __FUNCTION__, urb->status);
56 goto exit;
57 }
58
59 usb_serial_debug_data(debug, &port->dev, __FUNCTION__,
60 urb->actual_length, data);
61
62 tty = port->tty;
63 if (tty && urb->actual_length) {
64 tty_buffer_request_room(tty, urb->actual_length);
65 tty_insert_flip_string(tty, data, urb->actual_length);
66 tty_flip_buffer_push(tty);
67 }
68
69exit:
70 result = usb_submit_urb(urb, GFP_ATOMIC);
71 if (result)
72 dev_err(&urb->dev->dev,
73 "%s - Error %d submitting interrupt urb\n",
74 __FUNCTION__, result);
75}
76
77static int navman_open(struct usb_serial_port *port, struct file *filp)
78{
79 int result = 0;
80
81 dbg("%s - port %d", __FUNCTION__, port->number);
82
83 if (port->interrupt_in_urb) {
84 dbg("%s - adding interrupt input for treo", __FUNCTION__);
85 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
86 if (result)
87 dev_err(&port->dev,
88 "%s - failed submitting interrupt urb, error %d\n",
89 __FUNCTION__, result);
90 }
91 return result;
92}
93
94static void navman_close(struct usb_serial_port *port, struct file *filp)
95{
96 dbg("%s - port %d", __FUNCTION__, port->number);
97
98 if (port->interrupt_in_urb)
99 usb_kill_urb(port->interrupt_in_urb);
100}
101
102static int navman_write(struct usb_serial_port *port,
103 const unsigned char *buf, int count)
104{
105 dbg("%s - port %d", __FUNCTION__, port->number);
106
107 /*
108 * This device can't write any data, only read from the device
109 * so we just silently eat all data sent to us and say it was
110 * successfully sent.
111 * Evil, I know, but do you have a better idea?
112 */
113
114 return count;
115}
116
117static struct usb_serial_driver navman_device = {
118 .driver = {
119 .owner = THIS_MODULE,
120 .name = "navman",
121 },
122 .id_table = id_table,
123 .num_interrupt_in = NUM_DONT_CARE,
124 .num_bulk_in = NUM_DONT_CARE,
125 .num_bulk_out = NUM_DONT_CARE,
126 .num_ports = 1,
127 .open = navman_open,
128 .close = navman_close,
129 .write = navman_write,
130 .read_int_callback = navman_read_int_callback,
131};
132
133static int __init navman_init(void)
134{
135 int retval;
136
137 retval = usb_serial_register(&navman_device);
138 if (retval)
139 return retval;
140 retval = usb_register(&navman_driver);
141 if (retval)
142 usb_serial_deregister(&navman_device);
143 return retval;
144}
145
146static void __exit navman_exit(void)
147{
148 usb_deregister(&navman_driver);
149 usb_serial_deregister(&navman_device);
150}
151
152module_init(navman_init);
153module_exit(navman_exit);
154MODULE_LICENSE("GPL");
155
156module_param(debug, bool, S_IRUGO | S_IWUSR);
157MODULE_PARM_DESC(debug, "Debug enabled or not");