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1da177e4 | 1 | /* |
1da177e4 LT |
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 | |
dc76c912 | 8 | * Copyright (c) 2006 Anssi Hannula <anssi.hannula@gmail.com> |
1da177e4 LT |
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> | |
1da177e4 | 31 | #include <linux/usb.h> |
1da177e4 | 32 | #include "hid.h" |
1da177e4 LT |
33 | |
34 | struct device_type { | |
35 | u16 idVendor; | |
36 | u16 idProduct; | |
dc76c912 | 37 | const signed short *ff; |
1da177e4 LT |
38 | }; |
39 | ||
dc76c912 | 40 | static const signed short ff_rumble[] = { |
1da177e4 LT |
41 | FF_RUMBLE, |
42 | -1 | |
43 | }; | |
44 | ||
dc76c912 | 45 | static const signed short ff_joystick[] = { |
1da177e4 LT |
46 | FF_CONSTANT, |
47 | -1 | |
48 | }; | |
49 | ||
dc76c912 AH |
50 | static const struct device_type devices[] = { |
51 | { 0x046d, 0xc211, ff_rumble }, | |
52 | { 0x046d, 0xc219, ff_rumble }, | |
53 | { 0x046d, 0xc283, ff_joystick }, | |
54 | { 0x0000, 0x0000, ff_joystick } | |
1da177e4 LT |
55 | }; |
56 | ||
dc76c912 AH |
57 | static int hid_lgff_play(struct input_dev *dev, void *data, struct ff_effect *effect) |
58 | { | |
59 | struct hid_device *hid = dev->private; | |
60 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
61 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
62 | int x, y; | |
63 | unsigned int left, right; | |
64 | ||
65 | #define CLAMP(x) if (x < 0) x = 0; if (x > 0xff) x = 0xff | |
66 | ||
67 | switch (effect->type) { | |
68 | case FF_CONSTANT: | |
69 | x = effect->u.ramp.start_level + 0x7f; /* 0x7f is center */ | |
70 | y = effect->u.ramp.end_level + 0x7f; | |
71 | CLAMP(x); | |
72 | CLAMP(y); | |
73 | report->field[0]->value[0] = 0x51; | |
74 | report->field[0]->value[1] = 0x08; | |
75 | report->field[0]->value[2] = x; | |
76 | report->field[0]->value[3] = y; | |
77 | dbg("(x, y)=(%04x, %04x)", x, y); | |
78 | hid_submit_report(hid, report, USB_DIR_OUT); | |
79 | break; | |
80 | ||
81 | case FF_RUMBLE: | |
82 | right = effect->u.rumble.strong_magnitude; | |
83 | left = effect->u.rumble.weak_magnitude; | |
84 | right = right * 0xff / 0xffff; | |
85 | left = left * 0xff / 0xffff; | |
86 | CLAMP(left); | |
87 | CLAMP(right); | |
88 | report->field[0]->value[0] = 0x42; | |
89 | report->field[0]->value[1] = 0x00; | |
90 | report->field[0]->value[2] = left; | |
91 | report->field[0]->value[3] = right; | |
92 | dbg("(left, right)=(%04x, %04x)", left, right); | |
93 | hid_submit_report(hid, report, USB_DIR_OUT); | |
94 | break; | |
95 | } | |
96 | return 0; | |
97 | } | |
98 | ||
1da177e4 LT |
99 | int hid_lgff_init(struct hid_device* hid) |
100 | { | |
dc76c912 AH |
101 | struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); |
102 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
103 | struct input_dev *dev = hidinput->input; | |
104 | struct hid_report *report; | |
105 | struct hid_field *field; | |
106 | int error; | |
107 | int i, j; | |
1da177e4 LT |
108 | |
109 | /* Find the report to use */ | |
dc76c912 | 110 | if (list_empty(report_list)) { |
1da177e4 LT |
111 | err("No output report found"); |
112 | return -1; | |
113 | } | |
dc76c912 | 114 | |
1da177e4 | 115 | /* Check that the report looks ok */ |
dc76c912 | 116 | report = list_entry(report_list->next, struct hid_report, list); |
1da177e4 LT |
117 | if (!report) { |
118 | err("NULL output report"); | |
119 | return -1; | |
120 | } | |
dc76c912 | 121 | |
1da177e4 LT |
122 | field = report->field[0]; |
123 | if (!field) { | |
124 | err("NULL field"); | |
125 | return -1; | |
126 | } | |
127 | ||
dc76c912 AH |
128 | for (i = 0; i < ARRAY_SIZE(devices); i++) { |
129 | if (dev->id.vendor == devices[i].idVendor && | |
130 | dev->id.product == devices[i].idProduct) { | |
131 | for (j = 0; devices[i].ff[j] >= 0; j++) | |
132 | set_bit(devices[i].ff[j], dev->ffbit); | |
133 | break; | |
1da177e4 | 134 | } |
1da177e4 | 135 | } |
1da177e4 | 136 | |
dc76c912 AH |
137 | error = input_ff_create_memless(dev, NULL, hid_lgff_play); |
138 | if (error) | |
139 | return error; | |
1da177e4 | 140 | |
dc76c912 | 141 | printk(KERN_INFO "Force feedback for Logitech force feedback devices by Johann Deneux <johann.deneux@it.uu.se>\n"); |
1da177e4 | 142 | |
1da177e4 LT |
143 | return 0; |
144 | } |