Merge branch 'fix/asoc' into for-linus
[linux-2.6] / 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 sony_init(void)
139 {
140         return hid_register_driver(&sony_driver);
141 }
142
143 static void 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");