Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 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. |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 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. |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 13 | */ |
| 14 | |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 15 | #include <linux/gfp.h> |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 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> |
Greg Kroah-Hartman | a969888 | 2006-07-11 21:22:58 -0700 | [diff] [blame] | 22 | #include <linux/usb/serial.h> |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 23 | |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 24 | static bool debug; |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 25 | |
Németh Márton | 7d40d7e | 2010-01-10 15:34:24 +0100 | [diff] [blame] | 26 | static const struct usb_device_id id_table[] = { |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 27 | { USB_DEVICE(0x0a99, 0x0001) }, /* Talon Technology device */ |
Ross Burton | 0eee6a2 | 2010-08-06 16:36:39 +0100 | [diff] [blame] | 28 | { USB_DEVICE(0x0df7, 0x0900) }, /* Mobile Action i-gotU */ |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 29 | { }, |
| 30 | }; |
| 31 | MODULE_DEVICE_TABLE(usb, id_table); |
| 32 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 33 | static void navman_read_int_callback(struct urb *urb) |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 34 | { |
| 35 | struct usb_serial_port *port = urb->context; |
| 36 | unsigned char *data = urb->transfer_buffer; |
| 37 | struct tty_struct *tty; |
Greg Kroah-Hartman | 9965d61 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 38 | int status = urb->status; |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 39 | int result; |
| 40 | |
Greg Kroah-Hartman | 9965d61 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 41 | switch (status) { |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 42 | case 0: |
| 43 | /* success */ |
| 44 | break; |
| 45 | case -ECONNRESET: |
| 46 | case -ENOENT: |
| 47 | case -ESHUTDOWN: |
| 48 | /* this urb is terminated, clean up */ |
Greg Kroah-Hartman | 00c533f | 2012-05-15 16:27:25 -0700 | [diff] [blame^] | 49 | dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n", |
| 50 | __func__, status); |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 51 | return; |
| 52 | default: |
Greg Kroah-Hartman | 00c533f | 2012-05-15 16:27:25 -0700 | [diff] [blame^] | 53 | dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n", |
| 54 | __func__, status); |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 55 | goto exit; |
| 56 | } |
| 57 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 58 | usb_serial_debug_data(debug, &port->dev, __func__, |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 59 | urb->actual_length, data); |
| 60 | |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 61 | tty = tty_port_tty_get(&port->port); |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 62 | if (tty && urb->actual_length) { |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 63 | tty_insert_flip_string(tty, data, urb->actual_length); |
| 64 | tty_flip_buffer_push(tty); |
| 65 | } |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 66 | tty_kref_put(tty); |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 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", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 73 | __func__, result); |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 74 | } |
| 75 | |
Alan Cox | a509a7e | 2009-09-19 13:13:26 -0700 | [diff] [blame] | 76 | static int navman_open(struct tty_struct *tty, struct usb_serial_port *port) |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 77 | { |
| 78 | int result = 0; |
| 79 | |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 80 | if (port->interrupt_in_urb) { |
Greg Kroah-Hartman | 00c533f | 2012-05-15 16:27:25 -0700 | [diff] [blame^] | 81 | dev_dbg(&port->dev, "%s - adding interrupt input for treo\n", |
| 82 | __func__); |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 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", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 87 | __func__, result); |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 88 | } |
| 89 | return result; |
| 90 | } |
| 91 | |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 92 | static void navman_close(struct usb_serial_port *port) |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 93 | { |
Mariusz Kozlowski | 9aac10f | 2006-11-08 15:36:46 +0100 | [diff] [blame] | 94 | usb_kill_urb(port->interrupt_in_urb); |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 95 | } |
| 96 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 97 | static int navman_write(struct tty_struct *tty, struct usb_serial_port *port, |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 98 | const unsigned char *buf, int count) |
| 99 | { |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 100 | /* |
| 101 | * This device can't write any data, only read from the device |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 102 | */ |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 103 | return -EOPNOTSUPP; |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 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, |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 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 | |
Alan Stern | f667dda | 2012-02-23 14:57:18 -0500 | [diff] [blame] | 119 | static struct usb_serial_driver * const serial_drivers[] = { |
| 120 | &navman_device, NULL |
| 121 | }; |
| 122 | |
Greg Kroah-Hartman | 68e2411 | 2012-05-08 15:46:14 -0700 | [diff] [blame] | 123 | module_usb_serial_driver(serial_drivers, id_table); |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 124 | |
Greg Kroah-Hartman | e9a66c6 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 125 | MODULE_LICENSE("GPL"); |
| 126 | |
| 127 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
| 128 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |