1e9a66c64SGreg Kroah-Hartman /* 2e9a66c64SGreg Kroah-Hartman * Navman Serial USB driver 3e9a66c64SGreg Kroah-Hartman * 4e9a66c64SGreg Kroah-Hartman * Copyright (C) 2006 Greg Kroah-Hartman <gregkh@suse.de> 5e9a66c64SGreg Kroah-Hartman * 6e9a66c64SGreg Kroah-Hartman * This program is free software; you can redistribute it and/or 7e9a66c64SGreg Kroah-Hartman * modify it under the terms of the GNU General Public License 8e9a66c64SGreg Kroah-Hartman * version 2 as published by the Free Software Foundation. 9a5b6f60cSAlan Cox * 10a5b6f60cSAlan Cox * TODO: 11a5b6f60cSAlan Cox * Add termios method that uses copy_hw but also kills all echo 12a5b6f60cSAlan Cox * flags as the navman is rx only so cannot echo. 13e9a66c64SGreg Kroah-Hartman */ 14e9a66c64SGreg Kroah-Hartman 15e9a66c64SGreg Kroah-Hartman #include <linux/kernel.h> 16e9a66c64SGreg Kroah-Hartman #include <linux/init.h> 17e9a66c64SGreg Kroah-Hartman #include <linux/tty.h> 18e9a66c64SGreg Kroah-Hartman #include <linux/tty_flip.h> 19e9a66c64SGreg Kroah-Hartman #include <linux/module.h> 20e9a66c64SGreg Kroah-Hartman #include <linux/usb.h> 21a969888cSGreg Kroah-Hartman #include <linux/usb/serial.h> 22e9a66c64SGreg Kroah-Hartman 23e9a66c64SGreg Kroah-Hartman static int debug; 24e9a66c64SGreg Kroah-Hartman 25e9a66c64SGreg Kroah-Hartman static struct usb_device_id id_table [] = { 26e9a66c64SGreg Kroah-Hartman { USB_DEVICE(0x0a99, 0x0001) }, /* Talon Technology device */ 27e9a66c64SGreg Kroah-Hartman { }, 28e9a66c64SGreg Kroah-Hartman }; 29e9a66c64SGreg Kroah-Hartman MODULE_DEVICE_TABLE(usb, id_table); 30e9a66c64SGreg Kroah-Hartman 31e9a66c64SGreg Kroah-Hartman static struct usb_driver navman_driver = { 32e9a66c64SGreg Kroah-Hartman .name = "navman", 33e9a66c64SGreg Kroah-Hartman .probe = usb_serial_probe, 34e9a66c64SGreg Kroah-Hartman .disconnect = usb_serial_disconnect, 35e9a66c64SGreg Kroah-Hartman .id_table = id_table, 36e9a66c64SGreg Kroah-Hartman .no_dynamic_id = 1, 37e9a66c64SGreg Kroah-Hartman }; 38e9a66c64SGreg Kroah-Hartman 397d12e780SDavid Howells static void navman_read_int_callback(struct urb *urb) 40e9a66c64SGreg Kroah-Hartman { 41e9a66c64SGreg Kroah-Hartman struct usb_serial_port *port = urb->context; 42e9a66c64SGreg Kroah-Hartman unsigned char *data = urb->transfer_buffer; 43e9a66c64SGreg Kroah-Hartman struct tty_struct *tty; 449965d612SGreg Kroah-Hartman int status = urb->status; 45e9a66c64SGreg Kroah-Hartman int result; 46e9a66c64SGreg Kroah-Hartman 479965d612SGreg Kroah-Hartman switch (status) { 48e9a66c64SGreg Kroah-Hartman case 0: 49e9a66c64SGreg Kroah-Hartman /* success */ 50e9a66c64SGreg Kroah-Hartman break; 51e9a66c64SGreg Kroah-Hartman case -ECONNRESET: 52e9a66c64SGreg Kroah-Hartman case -ENOENT: 53e9a66c64SGreg Kroah-Hartman case -ESHUTDOWN: 54e9a66c64SGreg Kroah-Hartman /* this urb is terminated, clean up */ 55e9a66c64SGreg Kroah-Hartman dbg("%s - urb shutting down with status: %d", 56441b62c1SHarvey Harrison __func__, status); 57e9a66c64SGreg Kroah-Hartman return; 58e9a66c64SGreg Kroah-Hartman default: 59e9a66c64SGreg Kroah-Hartman dbg("%s - nonzero urb status received: %d", 60441b62c1SHarvey Harrison __func__, status); 61e9a66c64SGreg Kroah-Hartman goto exit; 62e9a66c64SGreg Kroah-Hartman } 63e9a66c64SGreg Kroah-Hartman 64441b62c1SHarvey Harrison usb_serial_debug_data(debug, &port->dev, __func__, 65e9a66c64SGreg Kroah-Hartman urb->actual_length, data); 66e9a66c64SGreg Kroah-Hartman 674a90f09bSAlan Cox tty = tty_port_tty_get(&port->port); 68e9a66c64SGreg Kroah-Hartman if (tty && urb->actual_length) { 69e9a66c64SGreg Kroah-Hartman tty_buffer_request_room(tty, urb->actual_length); 70e9a66c64SGreg Kroah-Hartman tty_insert_flip_string(tty, data, urb->actual_length); 71e9a66c64SGreg Kroah-Hartman tty_flip_buffer_push(tty); 72e9a66c64SGreg Kroah-Hartman } 734a90f09bSAlan Cox tty_kref_put(tty); 74e9a66c64SGreg Kroah-Hartman 75e9a66c64SGreg Kroah-Hartman exit: 76e9a66c64SGreg Kroah-Hartman result = usb_submit_urb(urb, GFP_ATOMIC); 77e9a66c64SGreg Kroah-Hartman if (result) 78e9a66c64SGreg Kroah-Hartman dev_err(&urb->dev->dev, 79e9a66c64SGreg Kroah-Hartman "%s - Error %d submitting interrupt urb\n", 80441b62c1SHarvey Harrison __func__, result); 81e9a66c64SGreg Kroah-Hartman } 82e9a66c64SGreg Kroah-Hartman 83a509a7e4SAlan Cox static int navman_open(struct tty_struct *tty, struct usb_serial_port *port) 84e9a66c64SGreg Kroah-Hartman { 85e9a66c64SGreg Kroah-Hartman int result = 0; 86e9a66c64SGreg Kroah-Hartman 87441b62c1SHarvey Harrison dbg("%s - port %d", __func__, port->number); 88e9a66c64SGreg Kroah-Hartman 89e9a66c64SGreg Kroah-Hartman if (port->interrupt_in_urb) { 90441b62c1SHarvey Harrison dbg("%s - adding interrupt input for treo", __func__); 91e9a66c64SGreg Kroah-Hartman result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); 92e9a66c64SGreg Kroah-Hartman if (result) 93e9a66c64SGreg Kroah-Hartman dev_err(&port->dev, 94e9a66c64SGreg Kroah-Hartman "%s - failed submitting interrupt urb, error %d\n", 95441b62c1SHarvey Harrison __func__, result); 96e9a66c64SGreg Kroah-Hartman } 97e9a66c64SGreg Kroah-Hartman return result; 98e9a66c64SGreg Kroah-Hartman } 99e9a66c64SGreg Kroah-Hartman 100335f8514SAlan Cox static void navman_close(struct usb_serial_port *port) 101e9a66c64SGreg Kroah-Hartman { 102441b62c1SHarvey Harrison dbg("%s - port %d", __func__, port->number); 103e9a66c64SGreg Kroah-Hartman 104e9a66c64SGreg Kroah-Hartman usb_kill_urb(port->interrupt_in_urb); 105e9a66c64SGreg Kroah-Hartman } 106e9a66c64SGreg Kroah-Hartman 10795da310eSAlan Cox static int navman_write(struct tty_struct *tty, struct usb_serial_port *port, 108e9a66c64SGreg Kroah-Hartman const unsigned char *buf, int count) 109e9a66c64SGreg Kroah-Hartman { 110441b62c1SHarvey Harrison dbg("%s - port %d", __func__, port->number); 111e9a66c64SGreg Kroah-Hartman 112e9a66c64SGreg Kroah-Hartman /* 113e9a66c64SGreg Kroah-Hartman * This device can't write any data, only read from the device 114e9a66c64SGreg Kroah-Hartman */ 115a5b6f60cSAlan Cox return -EOPNOTSUPP; 116e9a66c64SGreg Kroah-Hartman } 117e9a66c64SGreg Kroah-Hartman 118e9a66c64SGreg Kroah-Hartman static struct usb_serial_driver navman_device = { 119e9a66c64SGreg Kroah-Hartman .driver = { 120e9a66c64SGreg Kroah-Hartman .owner = THIS_MODULE, 121e9a66c64SGreg Kroah-Hartman .name = "navman", 122e9a66c64SGreg Kroah-Hartman }, 123e9a66c64SGreg Kroah-Hartman .id_table = id_table, 124d9b1b787SJohannes Hölzl .usb_driver = &navman_driver, 125e9a66c64SGreg Kroah-Hartman .num_ports = 1, 126e9a66c64SGreg Kroah-Hartman .open = navman_open, 127e9a66c64SGreg Kroah-Hartman .close = navman_close, 128e9a66c64SGreg Kroah-Hartman .write = navman_write, 129e9a66c64SGreg Kroah-Hartman .read_int_callback = navman_read_int_callback, 130e9a66c64SGreg Kroah-Hartman }; 131e9a66c64SGreg Kroah-Hartman 132e9a66c64SGreg Kroah-Hartman static int __init navman_init(void) 133e9a66c64SGreg Kroah-Hartman { 134e9a66c64SGreg Kroah-Hartman int retval; 135e9a66c64SGreg Kroah-Hartman 136e9a66c64SGreg Kroah-Hartman retval = usb_serial_register(&navman_device); 137e9a66c64SGreg Kroah-Hartman if (retval) 138e9a66c64SGreg Kroah-Hartman return retval; 139e9a66c64SGreg Kroah-Hartman retval = usb_register(&navman_driver); 140e9a66c64SGreg Kroah-Hartman if (retval) 141e9a66c64SGreg Kroah-Hartman usb_serial_deregister(&navman_device); 142e9a66c64SGreg Kroah-Hartman return retval; 143e9a66c64SGreg Kroah-Hartman } 144e9a66c64SGreg Kroah-Hartman 145e9a66c64SGreg Kroah-Hartman static void __exit navman_exit(void) 146e9a66c64SGreg Kroah-Hartman { 147e9a66c64SGreg Kroah-Hartman usb_deregister(&navman_driver); 148e9a66c64SGreg Kroah-Hartman usb_serial_deregister(&navman_device); 149e9a66c64SGreg Kroah-Hartman } 150e9a66c64SGreg Kroah-Hartman 151e9a66c64SGreg Kroah-Hartman module_init(navman_init); 152e9a66c64SGreg Kroah-Hartman module_exit(navman_exit); 153e9a66c64SGreg Kroah-Hartman MODULE_LICENSE("GPL"); 154e9a66c64SGreg Kroah-Hartman 155e9a66c64SGreg Kroah-Hartman module_param(debug, bool, S_IRUGO | S_IWUSR); 156e9a66c64SGreg Kroah-Hartman MODULE_PARM_DESC(debug, "Debug enabled or not"); 157