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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 | 16 | #include <linux/kernel.h> |
e9a66c64 GKH |
17 | #include <linux/tty.h> |
18 | #include <linux/tty_flip.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/usb.h> | |
a969888c | 21 | #include <linux/usb/serial.h> |
e9a66c64 | 22 | |
7d40d7e8 | 23 | static const struct usb_device_id id_table[] = { |
e9a66c64 | 24 | { USB_DEVICE(0x0a99, 0x0001) }, /* Talon Technology device */ |
0eee6a2b | 25 | { USB_DEVICE(0x0df7, 0x0900) }, /* Mobile Action i-gotU */ |
e9a66c64 GKH |
26 | { }, |
27 | }; | |
28 | MODULE_DEVICE_TABLE(usb, id_table); | |
29 | ||
7d12e780 | 30 | static void navman_read_int_callback(struct urb *urb) |
e9a66c64 GKH |
31 | { |
32 | struct usb_serial_port *port = urb->context; | |
33 | unsigned char *data = urb->transfer_buffer; | |
9965d612 | 34 | int status = urb->status; |
e9a66c64 GKH |
35 | int result; |
36 | ||
9965d612 | 37 | switch (status) { |
e9a66c64 GKH |
38 | case 0: |
39 | /* success */ | |
40 | break; | |
41 | case -ECONNRESET: | |
42 | case -ENOENT: | |
43 | case -ESHUTDOWN: | |
44 | /* this urb is terminated, clean up */ | |
00c533fd GKH |
45 | dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n", |
46 | __func__, status); | |
e9a66c64 GKH |
47 | return; |
48 | default: | |
00c533fd GKH |
49 | dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n", |
50 | __func__, status); | |
e9a66c64 GKH |
51 | goto exit; |
52 | } | |
53 | ||
59d33f2f | 54 | usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data); |
e9a66c64 | 55 | |
2e124b4a | 56 | if (urb->actual_length) { |
05c7cd39 | 57 | tty_insert_flip_string(&port->port, data, urb->actual_length); |
2e124b4a | 58 | tty_flip_buffer_push(&port->port); |
e9a66c64 GKH |
59 | } |
60 | ||
61 | exit: | |
62 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
63 | if (result) | |
64 | dev_err(&urb->dev->dev, | |
65 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 66 | __func__, result); |
e9a66c64 GKH |
67 | } |
68 | ||
a509a7e4 | 69 | static int navman_open(struct tty_struct *tty, struct usb_serial_port *port) |
e9a66c64 GKH |
70 | { |
71 | int result = 0; | |
72 | ||
e9a66c64 | 73 | if (port->interrupt_in_urb) { |
00c533fd GKH |
74 | dev_dbg(&port->dev, "%s - adding interrupt input for treo\n", |
75 | __func__); | |
e9a66c64 GKH |
76 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
77 | if (result) | |
78 | dev_err(&port->dev, | |
79 | "%s - failed submitting interrupt urb, error %d\n", | |
441b62c1 | 80 | __func__, result); |
e9a66c64 GKH |
81 | } |
82 | return result; | |
83 | } | |
84 | ||
335f8514 | 85 | static void navman_close(struct usb_serial_port *port) |
e9a66c64 | 86 | { |
9aac10ff | 87 | usb_kill_urb(port->interrupt_in_urb); |
e9a66c64 GKH |
88 | } |
89 | ||
95da310e | 90 | static int navman_write(struct tty_struct *tty, struct usb_serial_port *port, |
e9a66c64 GKH |
91 | const unsigned char *buf, int count) |
92 | { | |
e9a66c64 GKH |
93 | /* |
94 | * This device can't write any data, only read from the device | |
e9a66c64 | 95 | */ |
a5b6f60c | 96 | return -EOPNOTSUPP; |
e9a66c64 GKH |
97 | } |
98 | ||
99 | static struct usb_serial_driver navman_device = { | |
100 | .driver = { | |
101 | .owner = THIS_MODULE, | |
102 | .name = "navman", | |
103 | }, | |
104 | .id_table = id_table, | |
e9a66c64 GKH |
105 | .num_ports = 1, |
106 | .open = navman_open, | |
107 | .close = navman_close, | |
108 | .write = navman_write, | |
109 | .read_int_callback = navman_read_int_callback, | |
110 | }; | |
111 | ||
f667ddad AS |
112 | static struct usb_serial_driver * const serial_drivers[] = { |
113 | &navman_device, NULL | |
114 | }; | |
115 | ||
68e24113 | 116 | module_usb_serial_driver(serial_drivers, id_table); |
e9a66c64 | 117 | |
e9a66c64 | 118 | MODULE_LICENSE("GPL"); |