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e9a66c64 GKH |
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. | |
a5b6f60c AC |
9 | * |
10 | * TODO: | |
11 | * Add termios method that uses copy_hw but also kills all echo | |
12 | * flags as the navman is rx only so cannot echo. | |
e9a66c64 GKH |
13 | */ |
14 | ||
5a0e3ad6 | 15 | #include <linux/gfp.h> |
e9a66c64 GKH |
16 | #include <linux/kernel.h> |
17 | #include <linux/init.h> | |
18 | #include <linux/tty.h> | |
19 | #include <linux/tty_flip.h> | |
20 | #include <linux/module.h> | |
21 | #include <linux/usb.h> | |
a969888c | 22 | #include <linux/usb/serial.h> |
e9a66c64 GKH |
23 | |
24 | static int debug; | |
25 | ||
7d40d7e8 | 26 | static const struct usb_device_id id_table[] = { |
e9a66c64 | 27 | { USB_DEVICE(0x0a99, 0x0001) }, /* Talon Technology device */ |
0eee6a2b | 28 | { USB_DEVICE(0x0df7, 0x0900) }, /* Mobile Action i-gotU */ |
e9a66c64 GKH |
29 | { }, |
30 | }; | |
31 | MODULE_DEVICE_TABLE(usb, id_table); | |
32 | ||
33 | static struct usb_driver navman_driver = { | |
34 | .name = "navman", | |
35 | .probe = usb_serial_probe, | |
36 | .disconnect = usb_serial_disconnect, | |
37 | .id_table = id_table, | |
38 | .no_dynamic_id = 1, | |
39 | }; | |
40 | ||
7d12e780 | 41 | static void navman_read_int_callback(struct urb *urb) |
e9a66c64 GKH |
42 | { |
43 | struct usb_serial_port *port = urb->context; | |
44 | unsigned char *data = urb->transfer_buffer; | |
45 | struct tty_struct *tty; | |
9965d612 | 46 | int status = urb->status; |
e9a66c64 GKH |
47 | int result; |
48 | ||
9965d612 | 49 | switch (status) { |
e9a66c64 GKH |
50 | case 0: |
51 | /* success */ | |
52 | break; | |
53 | case -ECONNRESET: | |
54 | case -ENOENT: | |
55 | case -ESHUTDOWN: | |
56 | /* this urb is terminated, clean up */ | |
57 | dbg("%s - urb shutting down with status: %d", | |
441b62c1 | 58 | __func__, status); |
e9a66c64 GKH |
59 | return; |
60 | default: | |
61 | dbg("%s - nonzero urb status received: %d", | |
441b62c1 | 62 | __func__, status); |
e9a66c64 GKH |
63 | goto exit; |
64 | } | |
65 | ||
441b62c1 | 66 | usb_serial_debug_data(debug, &port->dev, __func__, |
e9a66c64 GKH |
67 | urb->actual_length, data); |
68 | ||
4a90f09b | 69 | tty = tty_port_tty_get(&port->port); |
e9a66c64 | 70 | if (tty && urb->actual_length) { |
e9a66c64 GKH |
71 | tty_insert_flip_string(tty, data, urb->actual_length); |
72 | tty_flip_buffer_push(tty); | |
73 | } | |
4a90f09b | 74 | tty_kref_put(tty); |
e9a66c64 GKH |
75 | |
76 | exit: | |
77 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
78 | if (result) | |
79 | dev_err(&urb->dev->dev, | |
80 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 81 | __func__, result); |
e9a66c64 GKH |
82 | } |
83 | ||
a509a7e4 | 84 | static int navman_open(struct tty_struct *tty, struct usb_serial_port *port) |
e9a66c64 GKH |
85 | { |
86 | int result = 0; | |
87 | ||
441b62c1 | 88 | dbg("%s - port %d", __func__, port->number); |
e9a66c64 GKH |
89 | |
90 | if (port->interrupt_in_urb) { | |
441b62c1 | 91 | dbg("%s - adding interrupt input for treo", __func__); |
e9a66c64 GKH |
92 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
93 | if (result) | |
94 | dev_err(&port->dev, | |
95 | "%s - failed submitting interrupt urb, error %d\n", | |
441b62c1 | 96 | __func__, result); |
e9a66c64 GKH |
97 | } |
98 | return result; | |
99 | } | |
100 | ||
335f8514 | 101 | static void navman_close(struct usb_serial_port *port) |
e9a66c64 | 102 | { |
441b62c1 | 103 | dbg("%s - port %d", __func__, port->number); |
e9a66c64 | 104 | |
9aac10ff | 105 | usb_kill_urb(port->interrupt_in_urb); |
e9a66c64 GKH |
106 | } |
107 | ||
95da310e | 108 | static int navman_write(struct tty_struct *tty, struct usb_serial_port *port, |
e9a66c64 GKH |
109 | const unsigned char *buf, int count) |
110 | { | |
441b62c1 | 111 | dbg("%s - port %d", __func__, port->number); |
e9a66c64 GKH |
112 | |
113 | /* | |
114 | * This device can't write any data, only read from the device | |
e9a66c64 | 115 | */ |
a5b6f60c | 116 | return -EOPNOTSUPP; |
e9a66c64 GKH |
117 | } |
118 | ||
119 | static struct usb_serial_driver navman_device = { | |
120 | .driver = { | |
121 | .owner = THIS_MODULE, | |
122 | .name = "navman", | |
123 | }, | |
124 | .id_table = id_table, | |
d9b1b787 | 125 | .usb_driver = &navman_driver, |
e9a66c64 GKH |
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 | ||
133 | static 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 | ||
146 | static void __exit navman_exit(void) | |
147 | { | |
148 | usb_deregister(&navman_driver); | |
149 | usb_serial_deregister(&navman_device); | |
150 | } | |
151 | ||
152 | module_init(navman_init); | |
153 | module_exit(navman_exit); | |
154 | MODULE_LICENSE("GPL"); | |
155 | ||
156 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
157 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |