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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 | 23 | |
7d40d7e8 | 24 | static const struct usb_device_id id_table[] = { |
e9a66c64 | 25 | { USB_DEVICE(0x0a99, 0x0001) }, /* Talon Technology device */ |
0eee6a2b | 26 | { USB_DEVICE(0x0df7, 0x0900) }, /* Mobile Action i-gotU */ |
e9a66c64 GKH |
27 | { }, |
28 | }; | |
29 | MODULE_DEVICE_TABLE(usb, id_table); | |
30 | ||
7d12e780 | 31 | static void navman_read_int_callback(struct urb *urb) |
e9a66c64 GKH |
32 | { |
33 | struct usb_serial_port *port = urb->context; | |
34 | unsigned char *data = urb->transfer_buffer; | |
35 | struct tty_struct *tty; | |
9965d612 | 36 | int status = urb->status; |
e9a66c64 GKH |
37 | int result; |
38 | ||
9965d612 | 39 | switch (status) { |
e9a66c64 GKH |
40 | case 0: |
41 | /* success */ | |
42 | break; | |
43 | case -ECONNRESET: | |
44 | case -ENOENT: | |
45 | case -ESHUTDOWN: | |
46 | /* this urb is terminated, clean up */ | |
00c533fd GKH |
47 | dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n", |
48 | __func__, status); | |
e9a66c64 GKH |
49 | return; |
50 | default: | |
00c533fd GKH |
51 | dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n", |
52 | __func__, status); | |
e9a66c64 GKH |
53 | goto exit; |
54 | } | |
55 | ||
59d33f2f | 56 | usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data); |
e9a66c64 | 57 | |
4a90f09b | 58 | tty = tty_port_tty_get(&port->port); |
e9a66c64 | 59 | if (tty && urb->actual_length) { |
e9a66c64 GKH |
60 | tty_insert_flip_string(tty, data, urb->actual_length); |
61 | tty_flip_buffer_push(tty); | |
62 | } | |
4a90f09b | 63 | tty_kref_put(tty); |
e9a66c64 GKH |
64 | |
65 | exit: | |
66 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
67 | if (result) | |
68 | dev_err(&urb->dev->dev, | |
69 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 70 | __func__, result); |
e9a66c64 GKH |
71 | } |
72 | ||
a509a7e4 | 73 | static int navman_open(struct tty_struct *tty, struct usb_serial_port *port) |
e9a66c64 GKH |
74 | { |
75 | int result = 0; | |
76 | ||
e9a66c64 | 77 | if (port->interrupt_in_urb) { |
00c533fd GKH |
78 | dev_dbg(&port->dev, "%s - adding interrupt input for treo\n", |
79 | __func__); | |
e9a66c64 GKH |
80 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
81 | if (result) | |
82 | dev_err(&port->dev, | |
83 | "%s - failed submitting interrupt urb, error %d\n", | |
441b62c1 | 84 | __func__, result); |
e9a66c64 GKH |
85 | } |
86 | return result; | |
87 | } | |
88 | ||
335f8514 | 89 | static void navman_close(struct usb_serial_port *port) |
e9a66c64 | 90 | { |
9aac10ff | 91 | usb_kill_urb(port->interrupt_in_urb); |
e9a66c64 GKH |
92 | } |
93 | ||
95da310e | 94 | static int navman_write(struct tty_struct *tty, struct usb_serial_port *port, |
e9a66c64 GKH |
95 | const unsigned char *buf, int count) |
96 | { | |
e9a66c64 GKH |
97 | /* |
98 | * This device can't write any data, only read from the device | |
e9a66c64 | 99 | */ |
a5b6f60c | 100 | return -EOPNOTSUPP; |
e9a66c64 GKH |
101 | } |
102 | ||
103 | static struct usb_serial_driver navman_device = { | |
104 | .driver = { | |
105 | .owner = THIS_MODULE, | |
106 | .name = "navman", | |
107 | }, | |
108 | .id_table = id_table, | |
e9a66c64 GKH |
109 | .num_ports = 1, |
110 | .open = navman_open, | |
111 | .close = navman_close, | |
112 | .write = navman_write, | |
113 | .read_int_callback = navman_read_int_callback, | |
114 | }; | |
115 | ||
f667ddad AS |
116 | static struct usb_serial_driver * const serial_drivers[] = { |
117 | &navman_device, NULL | |
118 | }; | |
119 | ||
68e24113 | 120 | module_usb_serial_driver(serial_drivers, id_table); |
e9a66c64 | 121 | |
e9a66c64 | 122 | MODULE_LICENSE("GPL"); |