[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.
 *
 * TODO:
 *	Add termios method that uses copy_hw but also kills all echo
 *	flags as the navman is rx only so cannot echo.
 */

#include <linux/gfp.h>
#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 const struct usb_device_id id_table[] = {
	{ USB_DEVICE(0x0a99, 0x0001) },	/* Talon Technology device */
	{ USB_DEVICE(0x0df7, 0x0900) },	/* Mobile Action i-gotU */
	{ },
};
MODULE_DEVICE_TABLE(usb, id_table);

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

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

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

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

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

static int navman_open(struct tty_struct *tty, struct usb_serial_port *port)
{
	int result = 0;

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

static void navman_close(struct usb_serial_port *port)
{
	usb_kill_urb(port->interrupt_in_urb);
}

static int navman_write(struct tty_struct *tty, struct usb_serial_port *port,
			const unsigned char *buf, int count)
{
	/*
	 * This device can't write any data, only read from the device
	 */
	return -EOPNOTSUPP;
}

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

static struct usb_serial_driver * const serial_drivers[] = {
	&navman_device, NULL
};

module_usb_serial_driver(serial_drivers, id_table);

MODULE_LICENSE("GPL");
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.
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	*/
e9a66c64 GKH	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
7d40d7e8	24	static const struct usb_device_id id_table[] = {
e9a66c64	25	{ USB_DEVICE(0x0a99, 0x0001) }, /* Talon Technology device */
0eee6a2b	26	{ USB_DEVICE(0x0df7, 0x0900) }, /* Mobile Action i-gotU */
e9a66c64 GKH	27	{ },
	28	};
	29	MODULE_DEVICE_TABLE(usb, id_table);
	30
7d12e780	31	static void navman_read_int_callback(struct urb *urb)
e9a66c64 GKH	32	{
	33	struct usb_serial_port *port = urb->context;
	34	unsigned char *data = urb->transfer_buffer;
9965d612	35	int status = urb->status;
e9a66c64 GKH	36	int result;
e9a66c64 GKH	37
9965d612	38	switch (status) {
e9a66c64 GKH	39	case 0:
	40	/* success */
	41	break;
	42	case -ECONNRESET:
	43	case -ENOENT:
	44	case -ESHUTDOWN:
	45	/* this urb is terminated, clean up */
00c533fd GKH	46	dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
00c533fd GKH	47	__func__, status);
e9a66c64 GKH	48	return;
e9a66c64 GKH	49	default:
00c533fd GKH	50	dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
00c533fd GKH	51	__func__, status);
e9a66c64 GKH	52	goto exit;
	53	}
	54
59d33f2f	55	usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data);
e9a66c64	56
2e124b4a	57	if (urb->actual_length) {
05c7cd39	58	tty_insert_flip_string(&port->port, data, urb->actual_length);
2e124b4a	59	tty_flip_buffer_push(&port->port);
e9a66c64 GKH	60	}
	61
	62	exit:
	63	result = usb_submit_urb(urb, GFP_ATOMIC);
	64	if (result)
	65	dev_err(&urb->dev->dev,
	66	"%s - Error %d submitting interrupt urb\n",
441b62c1	67	__func__, result);
e9a66c64 GKH	68	}
e9a66c64 GKH	69
a509a7e4	70	static int navman_open(struct tty_struct tty, struct usb_serial_port port)
e9a66c64 GKH	71	{
	72	int result = 0;
	73
e9a66c64	74	if (port->interrupt_in_urb) {
00c533fd GKH	75	dev_dbg(&port->dev, "%s - adding interrupt input for treo\n",
00c533fd GKH	76	__func__);
e9a66c64 GKH	77	result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
	78	if (result)
	79	dev_err(&port->dev,
	80	"%s - failed submitting interrupt urb, error %d\n",
441b62c1	81	__func__, result);
e9a66c64 GKH	82	}
	83	return result;
	84	}
	85
335f8514	86	static void navman_close(struct usb_serial_port *port)
e9a66c64	87	{
9aac10ff	88	usb_kill_urb(port->interrupt_in_urb);
e9a66c64 GKH	89	}
e9a66c64 GKH	90
95da310e	91	static int navman_write(struct tty_struct tty, struct usb_serial_port port,
e9a66c64 GKH	92	const unsigned char *buf, int count)
e9a66c64 GKH	93	{
e9a66c64 GKH	94	/*
e9a66c64 GKH	95	* This device can't write any data, only read from the device
e9a66c64	96	*/
a5b6f60c	97	return -EOPNOTSUPP;
e9a66c64 GKH	98	}
	99
	100	static struct usb_serial_driver navman_device = {
	101	.driver = {
	102	.owner = THIS_MODULE,
	103	.name = "navman",
	104	},
	105	.id_table = id_table,
e9a66c64 GKH	106	.num_ports = 1,
	107	.open = navman_open,
	108	.close = navman_close,
	109	.write = navman_write,
	110	.read_int_callback = navman_read_int_callback,
	111	};
	112
f667ddad AS	113	static struct usb_serial_driver * const serial_drivers[] = {
	114	&navman_device, NULL
	115	};
	116
68e24113	117	module_usb_serial_driver(serial_drivers, id_table);
e9a66c64	118
e9a66c64	119	MODULE_LICENSE("GPL");