HID: hidraw: fix window in hidraw_release
[linux-2.6.git] / drivers / hid / hid-lgff.c
1 /*
2  * Force feedback support for hid-compliant for some of the devices from
3  * Logitech, namely:
4  * - WingMan Cordless RumblePad
5  * - WingMan Force 3D
6  *
7  *  Copyright (c) 2002-2004 Johann Deneux
8  *  Copyright (c) 2006 Anssi Hannula <anssi.hannula@gmail.com>
9  */
10
11 /*
12  * This program is free software; you can redistribute it and/or modify
13  * it under the terms of the GNU General Public License as published by
14  * the Free Software Foundation; either version 2 of the License, or
15  * (at your option) any later version.
16  *
17  * This program is distributed in the hope that it will be useful,
18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20  * GNU General Public License for more details.
21  *
22  * You should have received a copy of the GNU General Public License
23  * along with this program; if not, write to the Free Software
24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25  *
26  * Should you need to contact me, the author, you can do so by
27  * e-mail - mail your message to <johann.deneux@it.uu.se>
28  */
29
30 #include <linux/input.h>
31 #include <linux/usb.h>
32 #include <linux/hid.h>
33
34 #include "usbhid/usbhid.h"
35 #include "hid-lg.h"
36
37 struct dev_type {
38         u16 idVendor;
39         u16 idProduct;
40         const signed short *ff;
41 };
42
43 static const signed short ff_rumble[] = {
44         FF_RUMBLE,
45         -1
46 };
47
48 static const signed short ff_joystick[] = {
49         FF_CONSTANT,
50         -1
51 };
52
53 static const signed short ff_joystick_ac[] = {
54         FF_CONSTANT,
55         FF_AUTOCENTER,
56         -1
57 };
58
59 static const signed short ff_wheel[] = {
60         FF_CONSTANT,
61         FF_AUTOCENTER,
62         -1
63 };
64
65 static const struct dev_type devices[] = {
66         { 0x046d, 0xc211, ff_rumble },
67         { 0x046d, 0xc219, ff_rumble },
68         { 0x046d, 0xc283, ff_joystick },
69         { 0x046d, 0xc286, ff_joystick_ac },
70         { 0x046d, 0xc287, ff_joystick_ac },
71         { 0x046d, 0xc293, ff_joystick },
72         { 0x046d, 0xc294, ff_wheel },
73         { 0x046d, 0xc295, ff_joystick },
74         { 0x046d, 0xca03, ff_wheel },
75 };
76
77 static int hid_lgff_play(struct input_dev *dev, void *data, struct ff_effect *effect)
78 {
79         struct hid_device *hid = input_get_drvdata(dev);
80         struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
81         struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
82         int x, y;
83         unsigned int left, right;
84
85 #define CLAMP(x) if (x < 0) x = 0; if (x > 0xff) x = 0xff
86
87         switch (effect->type) {
88         case FF_CONSTANT:
89                 x = effect->u.ramp.start_level + 0x7f;  /* 0x7f is center */
90                 y = effect->u.ramp.end_level + 0x7f;
91                 CLAMP(x);
92                 CLAMP(y);
93                 report->field[0]->value[0] = 0x51;
94                 report->field[0]->value[1] = 0x08;
95                 report->field[0]->value[2] = x;
96                 report->field[0]->value[3] = y;
97                 dbg_hid("(x, y)=(%04x, %04x)\n", x, y);
98                 usbhid_submit_report(hid, report, USB_DIR_OUT);
99                 break;
100
101         case FF_RUMBLE:
102                 right = effect->u.rumble.strong_magnitude;
103                 left = effect->u.rumble.weak_magnitude;
104                 right = right * 0xff / 0xffff;
105                 left = left * 0xff / 0xffff;
106                 CLAMP(left);
107                 CLAMP(right);
108                 report->field[0]->value[0] = 0x42;
109                 report->field[0]->value[1] = 0x00;
110                 report->field[0]->value[2] = left;
111                 report->field[0]->value[3] = right;
112                 dbg_hid("(left, right)=(%04x, %04x)\n", left, right);
113                 usbhid_submit_report(hid, report, USB_DIR_OUT);
114                 break;
115         }
116         return 0;
117 }
118
119 static void hid_lgff_set_autocenter(struct input_dev *dev, u16 magnitude)
120 {
121         struct hid_device *hid = input_get_drvdata(dev);
122         struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
123         struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
124         __s32 *value = report->field[0]->value;
125         magnitude = (magnitude >> 12) & 0xf;
126         *value++ = 0xfe;
127         *value++ = 0x0d;
128         *value++ = magnitude;   /* clockwise strength */
129         *value++ = magnitude;   /* counter-clockwise strength */
130         *value++ = 0x80;
131         *value++ = 0x00;
132         *value = 0x00;
133         usbhid_submit_report(hid, report, USB_DIR_OUT);
134 }
135
136 int lgff_init(struct hid_device* hid)
137 {
138         struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
139         struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
140         struct input_dev *dev = hidinput->input;
141         struct hid_report *report;
142         struct hid_field *field;
143         const signed short *ff_bits = ff_joystick;
144         int error;
145         int i;
146
147         /* Find the report to use */
148         if (list_empty(report_list)) {
149                 err_hid("No output report found");
150                 return -1;
151         }
152
153         /* Check that the report looks ok */
154         report = list_entry(report_list->next, struct hid_report, list);
155         field = report->field[0];
156         if (!field) {
157                 err_hid("NULL field");
158                 return -1;
159         }
160
161         for (i = 0; i < ARRAY_SIZE(devices); i++) {
162                 if (dev->id.vendor == devices[i].idVendor &&
163                     dev->id.product == devices[i].idProduct) {
164                         ff_bits = devices[i].ff;
165                         break;
166                 }
167         }
168
169         for (i = 0; ff_bits[i] >= 0; i++)
170                 set_bit(ff_bits[i], dev->ffbit);
171
172         error = input_ff_create_memless(dev, NULL, hid_lgff_play);
173         if (error)
174                 return error;
175
176         if ( test_bit(FF_AUTOCENTER, dev->ffbit) )
177                 dev->ff->set_autocenter = hid_lgff_set_autocenter;
178
179         printk(KERN_INFO "Force feedback for Logitech force feedback devices by Johann Deneux <johann.deneux@it.uu.se>\n");
180
181         return 0;
182 }