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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Navman Serial USB driver
4 *
5 * Copyright (C) 2006 Greg Kroah-Hartman <gregkh@suse.de>
6 *
7 * TODO:
8 * Add termios method that uses copy_hw but also kills all echo
9 * flags as the navman is rx only so cannot echo.
10 */
11
12#include <linux/gfp.h>
13#include <linux/kernel.h>
14#include <linux/tty.h>
15#include <linux/tty_flip.h>
16#include <linux/module.h>
17#include <linux/usb.h>
18#include <linux/usb/serial.h>
19
20static const struct usb_device_id id_table[] = {
21 { USB_DEVICE(0x0a99, 0x0001) }, /* Talon Technology device */
22 { USB_DEVICE(0x0df7, 0x0900) }, /* Mobile Action i-gotU */
23 { },
24};
25MODULE_DEVICE_TABLE(usb, id_table);
26
27static void navman_read_int_callback(struct urb *urb)
28{
29 struct usb_serial_port *port = urb->context;
30 unsigned char *data = urb->transfer_buffer;
31 int status = urb->status;
32 int result;
33
34 switch (status) {
35 case 0:
36 /* success */
37 break;
38 case -ECONNRESET:
39 case -ENOENT:
40 case -ESHUTDOWN:
41 /* this urb is terminated, clean up */
42 dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
43 __func__, status);
44 return;
45 default:
46 dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
47 __func__, status);
48 goto exit;
49 }
50
51 usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data);
52
53 if (urb->actual_length) {
54 tty_insert_flip_string(&port->port, data, urb->actual_length);
55 tty_flip_buffer_push(&port->port);
56 }
57
58exit:
59 result = usb_submit_urb(urb, GFP_ATOMIC);
60 if (result)
61 dev_err(&urb->dev->dev,
62 "%s - Error %d submitting interrupt urb\n",
63 __func__, result);
64}
65
66static int navman_open(struct tty_struct *tty, struct usb_serial_port *port)
67{
68 int result = 0;
69
70 if (port->interrupt_in_urb) {
71 dev_dbg(&port->dev, "%s - adding interrupt input for treo\n",
72 __func__);
73 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
74 if (result)
75 dev_err(&port->dev,
76 "%s - failed submitting interrupt urb, error %d\n",
77 __func__, result);
78 }
79 return result;
80}
81
82static void navman_close(struct usb_serial_port *port)
83{
84 usb_kill_urb(port->interrupt_in_urb);
85}
86
87static int navman_write(struct tty_struct *tty, struct usb_serial_port *port,
88 const unsigned char *buf, int count)
89{
90 /*
91 * This device can't write any data, only read from the device
92 */
93 return -EOPNOTSUPP;
94}
95
96static struct usb_serial_driver navman_device = {
97 .driver = {
98 .owner = THIS_MODULE,
99 .name = "navman",
100 },
101 .id_table = id_table,
102 .num_ports = 1,
103 .open = navman_open,
104 .close = navman_close,
105 .write = navman_write,
106 .read_int_callback = navman_read_int_callback,
107};
108
109static struct usb_serial_driver * const serial_drivers[] = {
110 &navman_device, NULL
111};
112
113module_usb_serial_driver(serial_drivers, id_table);
114
115MODULE_LICENSE("GPL v2");
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 * 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.
13 */
14
15#include <linux/gfp.h>
16#include <linux/kernel.h>
17#include <linux/tty.h>
18#include <linux/tty_flip.h>
19#include <linux/module.h>
20#include <linux/usb.h>
21#include <linux/usb/serial.h>
22
23static const struct usb_device_id id_table[] = {
24 { USB_DEVICE(0x0a99, 0x0001) }, /* Talon Technology device */
25 { USB_DEVICE(0x0df7, 0x0900) }, /* Mobile Action i-gotU */
26 { },
27};
28MODULE_DEVICE_TABLE(usb, id_table);
29
30static void navman_read_int_callback(struct urb *urb)
31{
32 struct usb_serial_port *port = urb->context;
33 unsigned char *data = urb->transfer_buffer;
34 int status = urb->status;
35 int result;
36
37 switch (status) {
38 case 0:
39 /* success */
40 break;
41 case -ECONNRESET:
42 case -ENOENT:
43 case -ESHUTDOWN:
44 /* this urb is terminated, clean up */
45 dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
46 __func__, status);
47 return;
48 default:
49 dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
50 __func__, status);
51 goto exit;
52 }
53
54 usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data);
55
56 if (urb->actual_length) {
57 tty_insert_flip_string(&port->port, data, urb->actual_length);
58 tty_flip_buffer_push(&port->port);
59 }
60
61exit:
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",
66 __func__, result);
67}
68
69static int navman_open(struct tty_struct *tty, struct usb_serial_port *port)
70{
71 int result = 0;
72
73 if (port->interrupt_in_urb) {
74 dev_dbg(&port->dev, "%s - adding interrupt input for treo\n",
75 __func__);
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",
80 __func__, result);
81 }
82 return result;
83}
84
85static void navman_close(struct usb_serial_port *port)
86{
87 usb_kill_urb(port->interrupt_in_urb);
88}
89
90static int navman_write(struct tty_struct *tty, struct usb_serial_port *port,
91 const unsigned char *buf, int count)
92{
93 /*
94 * This device can't write any data, only read from the device
95 */
96 return -EOPNOTSUPP;
97}
98
99static struct usb_serial_driver navman_device = {
100 .driver = {
101 .owner = THIS_MODULE,
102 .name = "navman",
103 },
104 .id_table = id_table,
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
112static struct usb_serial_driver * const serial_drivers[] = {
113 &navman_device, NULL
114};
115
116module_usb_serial_driver(serial_drivers, id_table);
117
118MODULE_LICENSE("GPL");