cregit-Linux how code gets into the kernel

Release 4.7 drivers/usb/misc/trancevibrator.c

Directory: drivers/usb/misc
/*
 * 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/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); }

Contributors

PersonTokensPropCommitsCommitProp
sam hocevarsam hocevar52100.00%1100.00%
Total52100.00%1100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
sam hocevarsam hocevar17092.39%150.00%
oliver neukumoliver neukum147.61%150.00%
Total184100.00%2100.00%

static DEVICE_ATTR(speed, S_IRUGO | S_IWUSR, 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; }

Contributors

PersonTokensPropCommitsCommitProp
sam hocevarsam hocevar137100.00%1100.00%
Total137100.00%1100.00%


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); }

Contributors

PersonTokensPropCommitsCommitProp
sam hocevarsam hocevar4686.79%150.00%
oliver neukumoliver neukum713.21%150.00%
Total53100.00%2100.00%

/* USB subsystem object */ static struct usb_driver tv_driver = { .name = "trancevibrator", .probe = tv_probe, .disconnect = tv_disconnect, .id_table = id_table, }; module_usb_driver(tv_driver); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL");

Overall Contributors

PersonTokensPropCommitsCommitProp
sam hocevarsam hocevar54194.91%114.29%
oliver neukumoliver neukum213.68%228.57%
greg kroah-hartmangreg kroah-hartman40.70%228.57%
tejun heotejun heo30.53%114.29%
marton nemethmarton nemeth10.18%114.29%
Total570100.00%7100.00%
Directory: drivers/usb/misc
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
{% endraw %}