drivers/hid/hid-sony.c

   1 /*
   2  *  HID driver for some sony "special" devices
   3  *
   4  *  Copyright (c) 1999 Andreas Gal
   5  *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
   6  *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
   7  *  Copyright (c) 2006-2007 Jiri Kosina
   8  *  Copyright (c) 2007 Paul Walmsley
   9  *  Copyright (c) 2008 Jiri Slaby
  10  */
  11
  12 /*
  13  * This program is free software; you can redistribute it and/or modify it
  14  * under the terms of the GNU General Public License as published by the Free
  15  * Software Foundation; either version 2 of the License, or (at your option)
  16  * any later version.
  17  */
  18
  19 #include <linux/device.h>
  20 #include <linux/hid.h>
  21 #include <linux/module.h>
  22 #include <linux/usb.h>
  23
  24 #include "hid-ids.h"
  25
  26 /*
  27  * Sending HID_REQ_GET_REPORT changes the operation mode of the ps3 controller
  28  * to "operational".  Without this, the ps3 controller will not report any
  29  * events.
  30  */
  31 static int sony_set_operational(struct hid_device *hdev)
  32 {
  33         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
  34         struct usb_device *dev = interface_to_usbdev(intf);
  35         __u16 ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
  36         int ret;
  37         char *buf = kmalloc(18, GFP_KERNEL);
  38
  39         if (!buf)
  40                 return -ENOMEM;
  41
  42         ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
  43                                  HID_REQ_GET_REPORT,
  44                                  USB_DIR_IN | USB_TYPE_CLASS |
  45                                  USB_RECIP_INTERFACE,
  46                                  (3 << 8) | 0xf2, ifnum, buf, 17,
  47                                  USB_CTRL_GET_TIMEOUT);
  48         if (ret < 0)
  49                 dev_err(&hdev->dev, "can't set operational mode\n");
  50
  51         kfree(buf);
  52
  53         return ret;
  54 }
  55
  56 static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id)
  57 {
  58         int ret;
  59
  60         ret = hid_parse(hdev);
  61         if (ret) {
  62                 dev_err(&hdev->dev, "parse failed\n");
  63                 goto err_free;
  64         }
  65
  66         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT |
  67                         HID_CONNECT_HIDDEV_FORCE);
  68         if (ret) {
  69                 dev_err(&hdev->dev, "hw start failed\n");
  70                 goto err_free;
  71         }
  72
  73         ret = sony_set_operational(hdev);
  74         if (ret)
  75                 goto err_stop;
  76
  77         return 0;
  78 err_stop:
  79         hid_hw_stop(hdev);
  80 err_free:
  81         return ret;
  82 }
  83
  84 static const struct hid_device_id sony_devices[] = {
  85         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
  86         { }
  87 };
  88 MODULE_DEVICE_TABLE(hid, sony_devices);
  89
  90 static struct hid_driver sony_driver = {
  91         .name = "sony",
  92         .id_table = sony_devices,
  93         .probe = sony_probe,
  94 };
  95
  96 static int sony_init(void)
  97 {
  98         return hid_register_driver(&sony_driver);
  99 }
 100
 101 static void sony_exit(void)
 102 {
 103         hid_unregister_driver(&sony_driver);
 104 }
 105
 106 module_init(sony_init);
 107 module_exit(sony_exit);
 108 MODULE_LICENSE("GPL");
 109
 110 HID_COMPAT_LOAD_DRIVER(sony);