HID: move reset leds quirk
[linux-2.6.git] / drivers / hid / usbhid / hid-lg2ff.c
1 /*
2  *  Force feedback support for Logitech Rumblepad 2
3  *
4  *  Copyright (c) 2008 Anssi Hannula <anssi.hannula@gmail.com>
5  */
6
7 /*
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21  */
22
23
24 #include <linux/input.h>
25 #include <linux/usb.h>
26 #include <linux/hid.h>
27 #include "usbhid.h"
28
29 struct lg2ff_device {
30         struct hid_report *report;
31 };
32
33 static int play_effect(struct input_dev *dev, void *data,
34                          struct ff_effect *effect)
35 {
36         struct hid_device *hid = input_get_drvdata(dev);
37         struct lg2ff_device *lg2ff = data;
38         int weak, strong;
39
40         strong = effect->u.rumble.strong_magnitude;
41         weak = effect->u.rumble.weak_magnitude;
42
43         if (weak || strong) {
44                 weak = weak * 0xff / 0xffff;
45                 strong = strong * 0xff / 0xffff;
46
47                 lg2ff->report->field[0]->value[0] = 0x51;
48                 lg2ff->report->field[0]->value[2] = weak;
49                 lg2ff->report->field[0]->value[4] = strong;
50         } else {
51                 lg2ff->report->field[0]->value[0] = 0xf3;
52                 lg2ff->report->field[0]->value[2] = 0x00;
53                 lg2ff->report->field[0]->value[4] = 0x00;
54         }
55
56         usbhid_submit_report(hid, lg2ff->report, USB_DIR_OUT);
57         return 0;
58 }
59
60 int hid_lg2ff_init(struct hid_device *hid)
61 {
62         struct lg2ff_device *lg2ff;
63         struct hid_report *report;
64         struct hid_input *hidinput = list_entry(hid->inputs.next,
65                                                 struct hid_input, list);
66         struct list_head *report_list =
67                         &hid->report_enum[HID_OUTPUT_REPORT].report_list;
68         struct input_dev *dev = hidinput->input;
69         int error;
70
71         if (list_empty(report_list)) {
72                 printk(KERN_ERR "hid-lg2ff: no output report found\n");
73                 return -ENODEV;
74         }
75
76         report = list_entry(report_list->next, struct hid_report, list);
77
78         if (report->maxfield < 1) {
79                 printk(KERN_ERR "hid-lg2ff: output report is empty\n");
80                 return -ENODEV;
81         }
82         if (report->field[0]->report_count < 7) {
83                 printk(KERN_ERR "hid-lg2ff: not enough values in the field\n");
84                 return -ENODEV;
85         }
86
87         lg2ff = kmalloc(sizeof(struct lg2ff_device), GFP_KERNEL);
88         if (!lg2ff)
89                 return -ENOMEM;
90
91         set_bit(FF_RUMBLE, dev->ffbit);
92
93         error = input_ff_create_memless(dev, lg2ff, play_effect);
94         if (error) {
95                 kfree(lg2ff);
96                 return error;
97         }
98
99         lg2ff->report = report;
100         report->field[0]->value[0] = 0xf3;
101         report->field[0]->value[1] = 0x00;
102         report->field[0]->value[2] = 0x00;
103         report->field[0]->value[3] = 0x00;
104         report->field[0]->value[4] = 0x00;
105         report->field[0]->value[5] = 0x00;
106         report->field[0]->value[6] = 0x00;
107
108         usbhid_submit_report(hid, report, USB_DIR_OUT);
109
110         printk(KERN_INFO "Force feedback for Logitech Rumblepad 2 by "
111                "Anssi Hannula <anssi.hannula@gmail.com>\n");
112
113         return 0;
114 }