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) 2007 Paul Walmsley
   8  *  Copyright (c) 2008 Jiri Slaby
   9  *  Copyright (c) 2006-2008 Jiri Kosina
  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 #define VAIO_RDESC_CONSTANT 0x0001
  27
  28 struct sony_sc {
  29         unsigned long quirks;
  30 };
  31
  32 /* Sony Vaio VGX has wrongly mouse pointer declared as constant */
  33 static void sony_report_fixup(struct hid_device *hdev, __u8 *rdesc,
  34                 unsigned int rsize)
  35 {
  36         struct sony_sc *sc = hid_get_drvdata(hdev);
  37
  38         if ((sc->quirks & VAIO_RDESC_CONSTANT) &&
  39                         rsize >= 56 && rdesc[54] == 0x81 && rdesc[55] == 0x07) {
  40                 dev_info(&hdev->dev, "Fixing up Sony Vaio VGX report "
  41                                 "descriptor\n");
  42                 rdesc[55] = 0x06;
  43         }
  44 }
  45
  46 /*
  47  * Sending HID_REQ_GET_REPORT changes the operation mode of the ps3 controller
  48  * to "operational".  Without this, the ps3 controller will not report any
  49  * events.
  50  */
  51 static int sony_set_operational(struct hid_device *hdev)
  52 {
  53         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
  54         struct usb_device *dev = interface_to_usbdev(intf);
  55         __u16 ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
  56         int ret;
  57         char *buf = kmalloc(18, GFP_KERNEL);
  58
  59         if (!buf)
  60                 return -ENOMEM;
  61
  62         ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
  63                                  HID_REQ_GET_REPORT,
  64                                  USB_DIR_IN | USB_TYPE_CLASS |
  65                                  USB_RECIP_INTERFACE,
  66                                  (3 << 8) | 0xf2, ifnum, buf, 17,
  67                                  USB_CTRL_GET_TIMEOUT);
  68         if (ret < 0)
  69                 dev_err(&hdev->dev, "can't set operational mode\n");
  70
  71         kfree(buf);
  72
  73         return ret;
  74 }
  75
  76 static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id)
  77 {
  78         int ret;
  79         unsigned long quirks = id->driver_data;
  80         struct sony_sc *sc;
  81
  82         sc = kzalloc(sizeof(*sc), GFP_KERNEL);
  83         if (sc == NULL) {
  84                 dev_err(&hdev->dev, "can't alloc apple descriptor\n");
  85                 return -ENOMEM;
  86         }
  87
  88         sc->quirks = quirks;
  89         hid_set_drvdata(hdev, sc);
  90
  91         ret = hid_parse(hdev);
  92         if (ret) {
  93                 dev_err(&hdev->dev, "parse failed\n");
  94                 goto err_free;
  95         }
  96
  97         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT |
  98                         HID_CONNECT_HIDDEV_FORCE);
  99         if (ret) {
 100                 dev_err(&hdev->dev, "hw start failed\n");
 101                 goto err_free;
 102         }
 103
 104         ret = sony_set_operational(hdev);
 105         if (ret < 0)
 106                 goto err_stop;
 107
 108         return 0;
 109 err_stop:
 110         hid_hw_stop(hdev);
 111 err_free:
 112         kfree(sc);
 113         return ret;
 114 }
 115
 116 static void sony_remove(struct hid_device *hdev)
 117 {
 118         hid_hw_stop(hdev);
 119         kfree(hid_get_drvdata(hdev));
 120 }
 121
 122 static const struct hid_device_id sony_devices[] = {
 123         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
 124         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE),
 125                 .driver_data = VAIO_RDESC_CONSTANT },
 126         { }
 127 };
 128 MODULE_DEVICE_TABLE(hid, sony_devices);
 129
 130 static struct hid_driver sony_driver = {
 131         .name = "sony",
 132         .id_table = sony_devices,
 133         .probe = sony_probe,
 134         .remove = sony_remove,
 135         .report_fixup = sony_report_fixup,
 136 };
 137
 138 static int __init sony_init(void)
 139 {
 140         return hid_register_driver(&sony_driver);
 141 }
 142
 143 static void __exit sony_exit(void)
 144 {
 145         hid_unregister_driver(&sony_driver);
 146 }
 147
 148 module_init(sony_init);
 149 module_exit(sony_exit);
 150 MODULE_LICENSE("GPL");