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/slab.h>
  23 #include <linux/usb.h>
  24
  25 #include "hid-ids.h"
  26
  27 #define VAIO_RDESC_CONSTANT 0x0001
  28
  29 struct sony_sc {
  30         unsigned long quirks;
  31 };
  32
  33 /* Sony Vaio VGX has wrongly mouse pointer declared as constant */
  34 static __u8 *sony_report_fixup(struct hid_device *hdev, __u8 *rdesc,
  35                 unsigned int *rsize)
  36 {
  37         struct sony_sc *sc = hid_get_drvdata(hdev);
  38
  39         if ((sc->quirks & VAIO_RDESC_CONSTANT) &&
  40                         *rsize >= 56 && rdesc[54] == 0x81 && rdesc[55] == 0x07) {
  41                 dev_info(&hdev->dev, "Fixing up Sony Vaio VGX report "
  42                                 "descriptor\n");
  43                 rdesc[55] = 0x06;
  44         }
  45         return rdesc;
  46 }
  47
  48 /*
  49  * Sending HID_REQ_GET_REPORT changes the operation mode of the ps3 controller
  50  * to "operational".  Without this, the ps3 controller will not report any
  51  * events.
  52  */
  53 static int sony_set_operational_usb(struct hid_device *hdev)
  54 {
  55         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
  56         struct usb_device *dev = interface_to_usbdev(intf);
  57         __u16 ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
  58         int ret;
  59         char *buf = kmalloc(18, GFP_KERNEL);
  60
  61         if (!buf)
  62                 return -ENOMEM;
  63
  64         ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
  65                                  HID_REQ_GET_REPORT,
  66                                  USB_DIR_IN | USB_TYPE_CLASS |
  67                                  USB_RECIP_INTERFACE,
  68                                  (3 << 8) | 0xf2, ifnum, buf, 17,
  69                                  USB_CTRL_GET_TIMEOUT);
  70         if (ret < 0)
  71                 dev_err(&hdev->dev, "can't set operational mode\n");
  72
  73         kfree(buf);
  74
  75         return ret;
  76 }
  77
  78 static int sony_set_operational_bt(struct hid_device *hdev)
  79 {
  80         unsigned char buf[] = { 0xf4,  0x42, 0x03, 0x00, 0x00 };
  81         return hdev->hid_output_raw_report(hdev, buf, sizeof(buf), HID_FEATURE_REPORT);
  82 }
  83
  84 static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id)
  85 {
  86         int ret;
  87         unsigned long quirks = id->driver_data;
  88         struct sony_sc *sc;
  89
  90         sc = kzalloc(sizeof(*sc), GFP_KERNEL);
  91         if (sc == NULL) {
  92                 dev_err(&hdev->dev, "can't alloc sony descriptor\n");
  93                 return -ENOMEM;
  94         }
  95
  96         sc->quirks = quirks;
  97         hid_set_drvdata(hdev, sc);
  98
  99         ret = hid_parse(hdev);
 100         if (ret) {
 101                 dev_err(&hdev->dev, "parse failed\n");
 102                 goto err_free;
 103         }
 104
 105         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT |
 106                         HID_CONNECT_HIDDEV_FORCE);
 107         if (ret) {
 108                 dev_err(&hdev->dev, "hw start failed\n");
 109                 goto err_free;
 110         }
 111
 112         switch (hdev->bus) {
 113         case BUS_USB:
 114                 ret = sony_set_operational_usb(hdev);
 115                 break;
 116         case BUS_BLUETOOTH:
 117                 ret = sony_set_operational_bt(hdev);
 118                 break;
 119         default:
 120                 ret = 0;
 121         }
 122
 123         if (ret < 0)
 124                 goto err_stop;
 125
 126         return 0;
 127 err_stop:
 128         hid_hw_stop(hdev);
 129 err_free:
 130         kfree(sc);
 131         return ret;
 132 }
 133
 134 static void sony_remove(struct hid_device *hdev)
 135 {
 136         hid_hw_stop(hdev);
 137         kfree(hid_get_drvdata(hdev));
 138 }
 139
 140 static const struct hid_device_id sony_devices[] = {
 141         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
 142         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
 143         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE),
 144                 .driver_data = VAIO_RDESC_CONSTANT },
 145         { }
 146 };
 147 MODULE_DEVICE_TABLE(hid, sony_devices);
 148
 149 static struct hid_driver sony_driver = {
 150         .name = "sony",
 151         .id_table = sony_devices,
 152         .probe = sony_probe,
 153         .remove = sony_remove,
 154         .report_fixup = sony_report_fixup,
 155 };
 156
 157 static int __init sony_init(void)
 158 {
 159         return hid_register_driver(&sony_driver);
 160 }
 161
 162 static void __exit sony_exit(void)
 163 {
 164         hid_unregister_driver(&sony_driver);
 165 }
 166
 167 module_init(sony_init);
 168 module_exit(sony_exit);
 169 MODULE_LICENSE("GPL");