mirror of https://gitee.com/openkylin/linux.git
128 lines
3.0 KiB
C
128 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* PlayStation 2 Trance Vibrator driver
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*
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* Copyright (C) 2006 Sam Hocevar <sam@zoy.org>
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*/
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/* Standard include files */
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/usb.h>
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#define DRIVER_AUTHOR "Sam Hocevar, sam@zoy.org"
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#define DRIVER_DESC "PlayStation 2 Trance Vibrator driver"
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#define TRANCEVIBRATOR_VENDOR_ID 0x0b49 /* ASCII Corporation */
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#define TRANCEVIBRATOR_PRODUCT_ID 0x064f /* Trance Vibrator */
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static const struct usb_device_id id_table[] = {
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{ USB_DEVICE(TRANCEVIBRATOR_VENDOR_ID, TRANCEVIBRATOR_PRODUCT_ID) },
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{ },
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};
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MODULE_DEVICE_TABLE (usb, id_table);
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/* Driver-local specific stuff */
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struct trancevibrator {
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struct usb_device *udev;
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unsigned int speed;
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};
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static ssize_t speed_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct usb_interface *intf = to_usb_interface(dev);
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struct trancevibrator *tv = usb_get_intfdata(intf);
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return sprintf(buf, "%d\n", tv->speed);
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}
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static ssize_t speed_store(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct usb_interface *intf = to_usb_interface(dev);
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struct trancevibrator *tv = usb_get_intfdata(intf);
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int temp, retval, old;
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temp = simple_strtoul(buf, NULL, 10);
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if (temp > 255)
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temp = 255;
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else if (temp < 0)
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temp = 0;
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old = tv->speed;
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tv->speed = temp;
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dev_dbg(&tv->udev->dev, "speed = %d\n", tv->speed);
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/* Set speed */
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retval = usb_control_msg(tv->udev, usb_sndctrlpipe(tv->udev, 0),
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0x01, /* vendor request: set speed */
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USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
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tv->speed, /* speed value */
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0, NULL, 0, USB_CTRL_GET_TIMEOUT);
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if (retval) {
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tv->speed = old;
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dev_dbg(&tv->udev->dev, "retval = %d\n", retval);
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return retval;
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}
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return count;
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}
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static DEVICE_ATTR_RW(speed);
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static int tv_probe(struct usb_interface *interface,
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const struct usb_device_id *id)
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{
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struct usb_device *udev = interface_to_usbdev(interface);
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struct trancevibrator *dev;
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int retval;
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dev = kzalloc(sizeof(struct trancevibrator), GFP_KERNEL);
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if (!dev) {
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retval = -ENOMEM;
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goto error;
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}
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dev->udev = usb_get_dev(udev);
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usb_set_intfdata(interface, dev);
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retval = device_create_file(&interface->dev, &dev_attr_speed);
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if (retval)
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goto error_create_file;
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return 0;
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error_create_file:
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usb_put_dev(udev);
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usb_set_intfdata(interface, NULL);
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error:
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kfree(dev);
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return retval;
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}
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static void tv_disconnect(struct usb_interface *interface)
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{
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struct trancevibrator *dev;
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dev = usb_get_intfdata (interface);
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device_remove_file(&interface->dev, &dev_attr_speed);
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usb_set_intfdata(interface, NULL);
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usb_put_dev(dev->udev);
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kfree(dev);
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}
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/* USB subsystem object */
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static struct usb_driver tv_driver = {
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.name = "trancevibrator",
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.probe = tv_probe,
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.disconnect = tv_disconnect,
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.id_table = id_table,
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};
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module_usb_driver(tv_driver);
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MODULE_AUTHOR(DRIVER_AUTHOR);
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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