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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 | |
90ab5ee9 | 24 | static bool debug; |
e9a66c64 | 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 | ||
7d12e780 | 33 | static void navman_read_int_callback(struct urb *urb) |
e9a66c64 GKH |
34 | { |
35 | struct usb_serial_port *port = urb->context; | |
36 | unsigned char *data = urb->transfer_buffer; | |
37 | struct tty_struct *tty; | |
9965d612 | 38 | int status = urb->status; |
e9a66c64 GKH |
39 | int result; |
40 | ||
9965d612 | 41 | switch (status) { |
e9a66c64 GKH |
42 | case 0: |
43 | /* success */ | |
44 | break; | |
45 | case -ECONNRESET: | |
46 | case -ENOENT: | |
47 | case -ESHUTDOWN: | |
48 | /* this urb is terminated, clean up */ | |
00c533fd GKH |
49 | dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n", |
50 | __func__, status); | |
e9a66c64 GKH |
51 | return; |
52 | default: | |
00c533fd GKH |
53 | dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n", |
54 | __func__, status); | |
e9a66c64 GKH |
55 | goto exit; |
56 | } | |
57 | ||
441b62c1 | 58 | usb_serial_debug_data(debug, &port->dev, __func__, |
e9a66c64 GKH |
59 | urb->actual_length, data); |
60 | ||
4a90f09b | 61 | tty = tty_port_tty_get(&port->port); |
e9a66c64 | 62 | if (tty && urb->actual_length) { |
e9a66c64 GKH |
63 | tty_insert_flip_string(tty, data, urb->actual_length); |
64 | tty_flip_buffer_push(tty); | |
65 | } | |
4a90f09b | 66 | tty_kref_put(tty); |
e9a66c64 GKH |
67 | |
68 | exit: | |
69 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
70 | if (result) | |
71 | dev_err(&urb->dev->dev, | |
72 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 73 | __func__, result); |
e9a66c64 GKH |
74 | } |
75 | ||
a509a7e4 | 76 | static int navman_open(struct tty_struct *tty, struct usb_serial_port *port) |
e9a66c64 GKH |
77 | { |
78 | int result = 0; | |
79 | ||
e9a66c64 | 80 | if (port->interrupt_in_urb) { |
00c533fd GKH |
81 | dev_dbg(&port->dev, "%s - adding interrupt input for treo\n", |
82 | __func__); | |
e9a66c64 GKH |
83 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
84 | if (result) | |
85 | dev_err(&port->dev, | |
86 | "%s - failed submitting interrupt urb, error %d\n", | |
441b62c1 | 87 | __func__, result); |
e9a66c64 GKH |
88 | } |
89 | return result; | |
90 | } | |
91 | ||
335f8514 | 92 | static void navman_close(struct usb_serial_port *port) |
e9a66c64 | 93 | { |
9aac10ff | 94 | usb_kill_urb(port->interrupt_in_urb); |
e9a66c64 GKH |
95 | } |
96 | ||
95da310e | 97 | static int navman_write(struct tty_struct *tty, struct usb_serial_port *port, |
e9a66c64 GKH |
98 | const unsigned char *buf, int count) |
99 | { | |
e9a66c64 GKH |
100 | /* |
101 | * This device can't write any data, only read from the device | |
e9a66c64 | 102 | */ |
a5b6f60c | 103 | return -EOPNOTSUPP; |
e9a66c64 GKH |
104 | } |
105 | ||
106 | static struct usb_serial_driver navman_device = { | |
107 | .driver = { | |
108 | .owner = THIS_MODULE, | |
109 | .name = "navman", | |
110 | }, | |
111 | .id_table = id_table, | |
e9a66c64 GKH |
112 | .num_ports = 1, |
113 | .open = navman_open, | |
114 | .close = navman_close, | |
115 | .write = navman_write, | |
116 | .read_int_callback = navman_read_int_callback, | |
117 | }; | |
118 | ||
f667ddad AS |
119 | static struct usb_serial_driver * const serial_drivers[] = { |
120 | &navman_device, NULL | |
121 | }; | |
122 | ||
68e24113 | 123 | module_usb_serial_driver(serial_drivers, id_table); |
e9a66c64 | 124 | |
e9a66c64 GKH |
125 | MODULE_LICENSE("GPL"); |
126 | ||
127 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
128 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |