[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / usb / serial / navman.c

/*
 * Navman Serial USB driver
 *
 * Copyright (C) 2006 Greg Kroah-Hartman <gregkh@suse.de>
 *
 *	This program is free software; you can redistribute it and/or
 *	modify it under the terms of the GNU General Public License
 *	version 2 as published by the Free Software Foundation.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>

static int debug;

static struct usb_device_id id_table [] = {
	{ USB_DEVICE(0x0a99, 0x0001) },	/* Talon Technology device */
	{ },
};
MODULE_DEVICE_TABLE(usb, id_table);

static struct usb_driver navman_driver = {
	.name =		"navman",
	.probe =	usb_serial_probe,
	.disconnect =	usb_serial_disconnect,
	.id_table =	id_table,
	.no_dynamic_id = 	1,
};

static void navman_read_int_callback(struct urb *urb)
{
	struct usb_serial_port *port = urb->context;
	unsigned char *data = urb->transfer_buffer;
	struct tty_struct *tty;
	int result;

	switch (urb->status) {
	case 0:
		/* success */
		break;
	case -ECONNRESET:
	case -ENOENT:
	case -ESHUTDOWN:
		/* this urb is terminated, clean up */
		dbg("%s - urb shutting down with status: %d",
		    __FUNCTION__, urb->status);
		return;
	default:
		dbg("%s - nonzero urb status received: %d",
		    __FUNCTION__, urb->status);
		goto exit;
	}

	usb_serial_debug_data(debug, &port->dev, __FUNCTION__,
			      urb->actual_length, data);

	tty = port->tty;
	if (tty && urb->actual_length) {
		tty_buffer_request_room(tty, urb->actual_length);
		tty_insert_flip_string(tty, data, urb->actual_length);
		tty_flip_buffer_push(tty);
	}

exit:
	result = usb_submit_urb(urb, GFP_ATOMIC);
	if (result)
		dev_err(&urb->dev->dev,
			"%s - Error %d submitting interrupt urb\n",
			__FUNCTION__, result);
}

static int navman_open(struct usb_serial_port *port, struct file *filp)
{
	int result = 0;

	dbg("%s - port %d", __FUNCTION__, port->number);

	if (port->interrupt_in_urb) {
		dbg("%s - adding interrupt input for treo", __FUNCTION__);
		result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
		if (result)
			dev_err(&port->dev,
				"%s - failed submitting interrupt urb, error %d\n",
				__FUNCTION__, result);
	}
	return result;
}

static void navman_close(struct usb_serial_port *port, struct file *filp)
{
	dbg("%s - port %d", __FUNCTION__, port->number);

	if (port->interrupt_in_urb)
		usb_kill_urb(port->interrupt_in_urb);
}

static int navman_write(struct usb_serial_port *port,
			const unsigned char *buf, int count)
{
	dbg("%s - port %d", __FUNCTION__, port->number);

	/*
	 * This device can't write any data, only read from the device
	 * so we just silently eat all data sent to us and say it was
	 * successfully sent.
	 * Evil, I know, but do you have a better idea?
	 */

	return count;
}

static struct usb_serial_driver navman_device = {
	.driver = {
		.owner =	THIS_MODULE,
		.name =		"navman",
	},
	.id_table =		id_table,
	.num_interrupt_in =	NUM_DONT_CARE,
	.num_bulk_in =		NUM_DONT_CARE,
	.num_bulk_out =		NUM_DONT_CARE,
	.num_ports =		1,
	.open =			navman_open,
	.close = 		navman_close,
	.write = 		navman_write,
	.read_int_callback =	navman_read_int_callback,
};

static int __init navman_init(void)
{
	int retval;

	retval = usb_serial_register(&navman_device);
	if (retval)
		return retval;
	retval = usb_register(&navman_driver);
	if (retval)
		usb_serial_deregister(&navman_device);
	return retval;
}

static void __exit navman_exit(void)
{
	usb_deregister(&navman_driver);
	usb_serial_deregister(&navman_device);
}

module_init(navman_init);
module_exit(navman_exit);
MODULE_LICENSE("GPL");

module_param(debug, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug enabled or not");
Commit	Line	Data
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.
	9	*/
	10
	11	#include <linux/kernel.h>
	12	#include <linux/init.h>
	13	#include <linux/tty.h>
	14	#include <linux/tty_flip.h>
	15	#include <linux/module.h>
	16	#include <linux/usb.h>
a969888c	17	#include <linux/usb/serial.h>
e9a66c64 GKH	18
	19	static int debug;
	20
	21	static struct usb_device_id id_table [] = {
	22	{ USB_DEVICE(0x0a99, 0x0001) }, /* Talon Technology device */
	23	{ },
	24	};
	25	MODULE_DEVICE_TABLE(usb, id_table);
	26
	27	static struct usb_driver navman_driver = {
	28	.name = "navman",
	29	.probe = usb_serial_probe,
	30	.disconnect = usb_serial_disconnect,
	31	.id_table = id_table,
	32	.no_dynamic_id = 1,
	33	};
	34
7d12e780	35	static void navman_read_int_callback(struct urb *urb)
e9a66c64 GKH	36	{
	37	struct usb_serial_port *port = urb->context;
	38	unsigned char *data = urb->transfer_buffer;
	39	struct tty_struct *tty;
	40	int result;
	41
	42	switch (urb->status) {
	43	case 0:
	44	/* success */
	45	break;
	46	case -ECONNRESET:
	47	case -ENOENT:
	48	case -ESHUTDOWN:
	49	/* this urb is terminated, clean up */
	50	dbg("%s - urb shutting down with status: %d",
	51	__FUNCTION__, urb->status);
	52	return;
	53	default:
	54	dbg("%s - nonzero urb status received: %d",
	55	__FUNCTION__, urb->status);
	56	goto exit;
	57	}
	58
	59	usb_serial_debug_data(debug, &port->dev, __FUNCTION__,
	60	urb->actual_length, data);
	61
	62	tty = port->tty;
	63	if (tty && urb->actual_length) {
	64	tty_buffer_request_room(tty, urb->actual_length);
	65	tty_insert_flip_string(tty, data, urb->actual_length);
	66	tty_flip_buffer_push(tty);
	67	}
	68
	69	exit:
	70	result = usb_submit_urb(urb, GFP_ATOMIC);
	71	if (result)
	72	dev_err(&urb->dev->dev,
	73	"%s - Error %d submitting interrupt urb\n",
	74	__FUNCTION__, result);
	75	}
	76
	77	static int navman_open(struct usb_serial_port port, struct file filp)
	78	{
	79	int result = 0;
	80
	81	dbg("%s - port %d", __FUNCTION__, port->number);
	82
	83	if (port->interrupt_in_urb) {
	84	dbg("%s - adding interrupt input for treo", __FUNCTION__);
	85	result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
	86	if (result)
	87	dev_err(&port->dev,
	88	"%s - failed submitting interrupt urb, error %d\n",
	89	__FUNCTION__, result);
	90	}
	91	return result;
	92	}
	93
	94	static void navman_close(struct usb_serial_port port, struct file filp)
	95	{
	96	dbg("%s - port %d", __FUNCTION__, port->number);
	97
	98	if (port->interrupt_in_urb)
	99	usb_kill_urb(port->interrupt_in_urb);
100	}
101
102	static int navman_write(struct usb_serial_port *port,
103	const unsigned char *buf, int count)
104	{
105	dbg("%s - port %d", __FUNCTION__, port->number);
106
107	/*
108	* This device can't write any data, only read from the device
109	* so we just silently eat all data sent to us and say it was
110	* successfully sent.
111	* Evil, I know, but do you have a better idea?
112	*/
113
114	return count;
115	}
116
117	static struct usb_serial_driver navman_device = {
118	.driver = {
119	.owner = THIS_MODULE,
120	.name = "navman",
121	},
122	.id_table = id_table,
123	.num_interrupt_in = NUM_DONT_CARE,
124	.num_bulk_in = NUM_DONT_CARE,
125	.num_bulk_out = NUM_DONT_CARE,
126	.num_ports = 1,
127	.open = navman_open,
128	.close = navman_close,
129	.write = navman_write,
130	.read_int_callback = navman_read_int_callback,
131	};
132
133	static int __init navman_init(void)
134	{
135	int retval;
136
137	retval = usb_serial_register(&navman_device);
138	if (retval)
139	return retval;
140	retval = usb_register(&navman_driver);
141	if (retval)
142	usb_serial_deregister(&navman_device);
143	return retval;
144	}
145
146	static void __exit navman_exit(void)
147	{
148	usb_deregister(&navman_driver);
149	usb_serial_deregister(&navman_device);
150	}
151
152	module_init(navman_init);
153	module_exit(navman_exit);
154	MODULE_LICENSE("GPL");
155
156	module_param(debug, bool, S_IRUGO \| S_IWUSR);
157	MODULE_PARM_DESC(debug, "Debug enabled or not");