[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / usb / misc / trancevibrator.c

/*
 * PlayStation 2 Trance Vibrator driver
 *
 * Copyright (C) 2006 Sam Hocevar <sam@zoy.org>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/* Standard include files */
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/usb.h>

/* Version Information */
#define DRIVER_VERSION "v1.1"
#define DRIVER_AUTHOR "Sam Hocevar, sam@zoy.org"
#define DRIVER_DESC "PlayStation 2 Trance Vibrator driver"

#define TRANCEVIBRATOR_VENDOR_ID	0x0b49	/* ASCII Corporation */
#define TRANCEVIBRATOR_PRODUCT_ID	0x064f	/* Trance Vibrator */

static const struct usb_device_id id_table[] = {
	{ USB_DEVICE(TRANCEVIBRATOR_VENDOR_ID, TRANCEVIBRATOR_PRODUCT_ID) },
	{ },
};
MODULE_DEVICE_TABLE (usb, id_table);

/* Driver-local specific stuff */
struct trancevibrator {
	struct usb_device *udev;
	unsigned int speed;
};

static ssize_t show_speed(struct device *dev, struct device_attribute *attr,
			  char *buf)
{
	struct usb_interface *intf = to_usb_interface(dev);
	struct trancevibrator *tv = usb_get_intfdata(intf);

	return sprintf(buf, "%d\n", tv->speed);
}

static ssize_t set_speed(struct device *dev, struct device_attribute *attr,
			 const char *buf, size_t count)
{
	struct usb_interface *intf = to_usb_interface(dev);
	struct trancevibrator *tv = usb_get_intfdata(intf);
	int temp, retval, old;

	temp = simple_strtoul(buf, NULL, 10);
	if (temp > 255)
		temp = 255;
	else if (temp < 0)
		temp = 0;
	old = tv->speed;
	tv->speed = temp;

	dev_dbg(&tv->udev->dev, "speed = %d\n", tv->speed);

	/* Set speed */
	retval = usb_control_msg(tv->udev, usb_sndctrlpipe(tv->udev, 0),
				 0x01, /* vendor request: set speed */
				 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
				 tv->speed, /* speed value */
				 0, NULL, 0, USB_CTRL_GET_TIMEOUT);
	if (retval) {
		tv->speed = old;
		dev_dbg(&tv->udev->dev, "retval = %d\n", retval);
		return retval;
	}
	return count;
}

static DEVICE_ATTR(speed, S_IWUGO | S_IRUGO, show_speed, set_speed);

static int tv_probe(struct usb_interface *interface,
		    const struct usb_device_id *id)
{
	struct usb_device *udev = interface_to_usbdev(interface);
	struct trancevibrator *dev;
	int retval;

	dev = kzalloc(sizeof(struct trancevibrator), GFP_KERNEL);
	if (dev == NULL) {
		dev_err(&interface->dev, "Out of memory\n");
		retval = -ENOMEM;
		goto error;
	}

	dev->udev = usb_get_dev(udev);
	usb_set_intfdata(interface, dev);
	retval = device_create_file(&interface->dev, &dev_attr_speed);
	if (retval)
		goto error_create_file;

	return 0;

error_create_file:
	usb_put_dev(udev);
	usb_set_intfdata(interface, NULL);
error:
	kfree(dev);
	return retval;
}

static void tv_disconnect(struct usb_interface *interface)
{
	struct trancevibrator *dev;

	dev = usb_get_intfdata (interface);
	device_remove_file(&interface->dev, &dev_attr_speed);
	usb_set_intfdata(interface, NULL);
	usb_put_dev(dev->udev);
	kfree(dev);
}

/* USB subsystem object */
static struct usb_driver tv_driver = {
	.name =		"trancevibrator",
	.probe =	tv_probe,
	.disconnect =	tv_disconnect,
	.id_table =	id_table,
};

static int __init tv_init(void)
{
	int retval = usb_register(&tv_driver);
	if (retval) {
		err("usb_register failed. Error number %d", retval);
		return retval;
	}

	printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
	       DRIVER_DESC "\n");
	return 0;
}

static void __exit tv_exit(void)
{
	usb_deregister(&tv_driver);
}

module_init (tv_init);
module_exit (tv_exit);

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
Commit	Line	Data
5638e4d9 SH	1	/*
	2	* PlayStation 2 Trance Vibrator driver
	3	*
	4	* Copyright (C) 2006 Sam Hocevar <sam@zoy.org>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	19	*/
	20
	21	/* Standard include files */
	22	#include <linux/kernel.h>
	23	#include <linux/errno.h>
	24	#include <linux/init.h>
5a0e3ad6	25	#include <linux/slab.h>
5638e4d9 SH	26	#include <linux/module.h>
	27	#include <linux/usb.h>
	28
	29	/* Version Information */
	30	#define DRIVER_VERSION "v1.1"
	31	#define DRIVER_AUTHOR "Sam Hocevar, sam@zoy.org"
	32	#define DRIVER_DESC "PlayStation 2 Trance Vibrator driver"
	33
	34	#define TRANCEVIBRATOR_VENDOR_ID 0x0b49 /* ASCII Corporation */
	35	#define TRANCEVIBRATOR_PRODUCT_ID 0x064f /* Trance Vibrator */
	36
33b9e162	37	static const struct usb_device_id id_table[] = {
5638e4d9 SH	38	{ USB_DEVICE(TRANCEVIBRATOR_VENDOR_ID, TRANCEVIBRATOR_PRODUCT_ID) },
	39	{ },
	40	};
	41	MODULE_DEVICE_TABLE (usb, id_table);
	42
	43	/* Driver-local specific stuff */
	44	struct trancevibrator {
	45	struct usb_device *udev;
	46	unsigned int speed;
	47	};
	48
	49	static ssize_t show_speed(struct device dev, struct device_attribute attr,
	50	char *buf)
	51	{
	52	struct usb_interface *intf = to_usb_interface(dev);
	53	struct trancevibrator *tv = usb_get_intfdata(intf);
	54
	55	return sprintf(buf, "%d\n", tv->speed);
	56	}
	57
	58	static ssize_t set_speed(struct device dev, struct device_attribute attr,
	59	const char *buf, size_t count)
	60	{
	61	struct usb_interface *intf = to_usb_interface(dev);
	62	struct trancevibrator *tv = usb_get_intfdata(intf);
0cc5e2e7	63	int temp, retval, old;
5638e4d9 SH	64
	65	temp = simple_strtoul(buf, NULL, 10);
	66	if (temp > 255)
	67	temp = 255;
	68	else if (temp < 0)
	69	temp = 0;
0cc5e2e7	70	old = tv->speed;
5638e4d9 SH	71	tv->speed = temp;
	72
	73	dev_dbg(&tv->udev->dev, "speed = %d\n", tv->speed);
	74
	75	/* Set speed */
	76	retval = usb_control_msg(tv->udev, usb_sndctrlpipe(tv->udev, 0),
	77	0x01, /* vendor request: set speed */
	78	USB_DIR_IN \| USB_TYPE_VENDOR \| USB_RECIP_OTHER,
	79	tv->speed, /* speed value */
	80	0, NULL, 0, USB_CTRL_GET_TIMEOUT);
	81	if (retval) {
0cc5e2e7	82	tv->speed = old;
5638e4d9 SH	83	dev_dbg(&tv->udev->dev, "retval = %d\n", retval);
	84	return retval;
	85	}
	86	return count;
	87	}
	88
	89	static DEVICE_ATTR(speed, S_IWUGO \| S_IRUGO, show_speed, set_speed);
	90
	91	static int tv_probe(struct usb_interface *interface,
	92	const struct usb_device_id *id)
	93	{
	94	struct usb_device *udev = interface_to_usbdev(interface);
	95	struct trancevibrator *dev;
	96	int retval;
	97
	98	dev = kzalloc(sizeof(struct trancevibrator), GFP_KERNEL);
	99	if (dev == NULL) {
	100	dev_err(&interface->dev, "Out of memory\n");
	101	retval = -ENOMEM;
	102	goto error;
	103	}
	104
	105	dev->udev = usb_get_dev(udev);
	106	usb_set_intfdata(interface, dev);
	107	retval = device_create_file(&interface->dev, &dev_attr_speed);
	108	if (retval)
	109	goto error_create_file;
	110
	111	return 0;
	112
	113	error_create_file:
	114	usb_put_dev(udev);
	115	usb_set_intfdata(interface, NULL);
	116	error:
	117	kfree(dev);
	118	return retval;
	119	}
	120
	121	static void tv_disconnect(struct usb_interface *interface)
	122	{
	123	struct trancevibrator *dev;
	124
	125	dev = usb_get_intfdata (interface);
5638e4d9	126	device_remove_file(&interface->dev, &dev_attr_speed);
96ca014d	127	usb_set_intfdata(interface, NULL);
5638e4d9 SH	128	usb_put_dev(dev->udev);
	129	kfree(dev);
	130	}
	131
	132	/* USB subsystem object */
	133	static struct usb_driver tv_driver = {
	134	.name = "trancevibrator",
	135	.probe = tv_probe,
	136	.disconnect = tv_disconnect,
	137	.id_table = id_table,
	138	};
	139
	140	static int __init tv_init(void)
	141	{
	142	int retval = usb_register(&tv_driver);
	143	if (retval) {
	144	err("usb_register failed. Error number %d", retval);
	145	return retval;
	146	}
	147
1b29a375 GKH	148	printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
1b29a375 GKH	149	DRIVER_DESC "\n");
5638e4d9 SH	150	return 0;
	151	}
	152
	153	static void __exit tv_exit(void)
	154	{
	155	usb_deregister(&tv_driver);
	156	}
	157
	158	module_init (tv_init);
	159	module_exit (tv_exit);
	160
	161	MODULE_AUTHOR(DRIVER_AUTHOR);
	162	MODULE_DESCRIPTION(DRIVER_DESC);
	163	MODULE_LICENSE("GPL");