Root/
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 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
31 | |
32 | #include <linux/input.h> |
33 | #include <linux/usb.h> |
34 | #include <linux/hid.h> |
35 | |
36 | #include "usbhid/usbhid.h" |
37 | #include "hid-lg.h" |
38 | |
39 | struct dev_type { |
40 | u16 idVendor; |
41 | u16 idProduct; |
42 | const signed short *ff; |
43 | }; |
44 | |
45 | static const signed short ff_rumble[] = { |
46 | FF_RUMBLE, |
47 | -1 |
48 | }; |
49 | |
50 | static const signed short ff_joystick[] = { |
51 | FF_CONSTANT, |
52 | -1 |
53 | }; |
54 | |
55 | static const signed short ff_joystick_ac[] = { |
56 | FF_CONSTANT, |
57 | FF_AUTOCENTER, |
58 | -1 |
59 | }; |
60 | |
61 | static const struct dev_type devices[] = { |
62 | { 0x046d, 0xc211, ff_rumble }, |
63 | { 0x046d, 0xc219, ff_rumble }, |
64 | { 0x046d, 0xc283, ff_joystick }, |
65 | { 0x046d, 0xc286, ff_joystick_ac }, |
66 | { 0x046d, 0xc287, ff_joystick_ac }, |
67 | { 0x046d, 0xc293, ff_joystick }, |
68 | { 0x046d, 0xc295, ff_joystick }, |
69 | }; |
70 | |
71 | static int hid_lgff_play(struct input_dev *dev, void *data, struct ff_effect *effect) |
72 | { |
73 | struct hid_device *hid = input_get_drvdata(dev); |
74 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; |
75 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); |
76 | int x, y; |
77 | unsigned int left, right; |
78 | |
79 | #define CLAMP(x) if (x < 0) x = 0; if (x > 0xff) x = 0xff |
80 | |
81 | switch (effect->type) { |
82 | case FF_CONSTANT: |
83 | x = effect->u.ramp.start_level + 0x7f; /* 0x7f is center */ |
84 | y = effect->u.ramp.end_level + 0x7f; |
85 | CLAMP(x); |
86 | CLAMP(y); |
87 | report->field[0]->value[0] = 0x51; |
88 | report->field[0]->value[1] = 0x08; |
89 | report->field[0]->value[2] = x; |
90 | report->field[0]->value[3] = y; |
91 | dbg_hid("(x, y)=(%04x, %04x)\n", x, y); |
92 | usbhid_submit_report(hid, report, USB_DIR_OUT); |
93 | break; |
94 | |
95 | case FF_RUMBLE: |
96 | right = effect->u.rumble.strong_magnitude; |
97 | left = effect->u.rumble.weak_magnitude; |
98 | right = right * 0xff / 0xffff; |
99 | left = left * 0xff / 0xffff; |
100 | CLAMP(left); |
101 | CLAMP(right); |
102 | report->field[0]->value[0] = 0x42; |
103 | report->field[0]->value[1] = 0x00; |
104 | report->field[0]->value[2] = left; |
105 | report->field[0]->value[3] = right; |
106 | dbg_hid("(left, right)=(%04x, %04x)\n", left, right); |
107 | usbhid_submit_report(hid, report, USB_DIR_OUT); |
108 | break; |
109 | } |
110 | return 0; |
111 | } |
112 | |
113 | static void hid_lgff_set_autocenter(struct input_dev *dev, u16 magnitude) |
114 | { |
115 | struct hid_device *hid = input_get_drvdata(dev); |
116 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; |
117 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); |
118 | __s32 *value = report->field[0]->value; |
119 | magnitude = (magnitude >> 12) & 0xf; |
120 | *value++ = 0xfe; |
121 | *value++ = 0x0d; |
122 | *value++ = magnitude; /* clockwise strength */ |
123 | *value++ = magnitude; /* counter-clockwise strength */ |
124 | *value++ = 0x80; |
125 | *value++ = 0x00; |
126 | *value = 0x00; |
127 | usbhid_submit_report(hid, report, USB_DIR_OUT); |
128 | } |
129 | |
130 | int lgff_init(struct hid_device* hid) |
131 | { |
132 | struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); |
133 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; |
134 | struct input_dev *dev = hidinput->input; |
135 | struct hid_report *report; |
136 | struct hid_field *field; |
137 | const signed short *ff_bits = ff_joystick; |
138 | int error; |
139 | int i; |
140 | |
141 | /* Find the report to use */ |
142 | if (list_empty(report_list)) { |
143 | hid_err(hid, "No output report found\n"); |
144 | return -1; |
145 | } |
146 | |
147 | /* Check that the report looks ok */ |
148 | report = list_entry(report_list->next, struct hid_report, list); |
149 | field = report->field[0]; |
150 | if (!field) { |
151 | hid_err(hid, "NULL field\n"); |
152 | return -1; |
153 | } |
154 | |
155 | for (i = 0; i < ARRAY_SIZE(devices); i++) { |
156 | if (dev->id.vendor == devices[i].idVendor && |
157 | dev->id.product == devices[i].idProduct) { |
158 | ff_bits = devices[i].ff; |
159 | break; |
160 | } |
161 | } |
162 | |
163 | for (i = 0; ff_bits[i] >= 0; i++) |
164 | set_bit(ff_bits[i], dev->ffbit); |
165 | |
166 | error = input_ff_create_memless(dev, NULL, hid_lgff_play); |
167 | if (error) |
168 | return error; |
169 | |
170 | if ( test_bit(FF_AUTOCENTER, dev->ffbit) ) |
171 | dev->ff->set_autocenter = hid_lgff_set_autocenter; |
172 | |
173 | pr_info("Force feedback for Logitech force feedback devices by Johann Deneux <johann.deneux@it.uu.se>\n"); |
174 | |
175 | return 0; |
176 | } |
177 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9