Commit | Line | Data |
---|---|---|
20eb1279 AH |
1 | /* |
2 | * Force feedback support for PantherLord USB/PS2 2in1 Adapter devices | |
3 | * | |
4 | * Copyright (c) 2007 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 | /* #define DEBUG */ | |
25 | ||
26 | #define debug(format, arg...) pr_debug("hid-plff: " format "\n" , ## arg) | |
27 | ||
28 | #include <linux/input.h> | |
29 | #include <linux/usb.h> | |
30 | #include <linux/hid.h> | |
31 | #include "usbhid.h" | |
32 | ||
33 | struct plff_device { | |
34 | struct hid_report *report; | |
35 | }; | |
36 | ||
37 | static int hid_plff_play(struct input_dev *dev, void *data, | |
38 | struct ff_effect *effect) | |
39 | { | |
40 | struct hid_device *hid = dev->private; | |
41 | struct plff_device *plff = data; | |
42 | int left, right; | |
43 | ||
44 | left = effect->u.rumble.strong_magnitude; | |
45 | right = effect->u.rumble.weak_magnitude; | |
46 | debug("called with 0x%04x 0x%04x", left, right); | |
47 | ||
48 | left = left * 0x7f / 0xffff; | |
49 | right = right * 0x7f / 0xffff; | |
50 | ||
51 | plff->report->field[0]->value[2] = left; | |
52 | plff->report->field[0]->value[3] = right; | |
53 | debug("running with 0x%02x 0x%02x", left, right); | |
54 | usbhid_submit_report(hid, plff->report, USB_DIR_OUT); | |
55 | ||
56 | return 0; | |
57 | } | |
58 | ||
59 | int hid_plff_init(struct hid_device *hid) | |
60 | { | |
61 | struct plff_device *plff; | |
62 | struct hid_report *report; | |
63 | struct hid_input *hidinput; | |
64 | struct list_head *report_list = | |
65 | &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
66 | struct list_head *report_ptr = report_list; | |
67 | struct input_dev *dev; | |
68 | int error; | |
69 | ||
70 | /* The device contains 2 output reports (one for each | |
71 | HID_QUIRK_MULTI_INPUT device), both containing 1 field, which | |
72 | contains 4 ff00.0002 usages and 4 16bit absolute values. | |
73 | ||
74 | The 2 input reports also contain a field which contains | |
75 | 8 ff00.0001 usages and 8 boolean values. Their meaning is | |
76 | currently unknown. */ | |
77 | ||
78 | if (list_empty(report_list)) { | |
79 | printk(KERN_ERR "hid-plff: no output reports found\n"); | |
80 | return -ENODEV; | |
81 | } | |
82 | ||
83 | list_for_each_entry(hidinput, &hid->inputs, list) { | |
84 | ||
85 | report_ptr = report_ptr->next; | |
86 | ||
87 | if (report_ptr == report_list) { | |
88 | printk(KERN_ERR "hid-plff: required output report is missing\n"); | |
89 | return -ENODEV; | |
90 | } | |
91 | ||
92 | report = list_entry(report_ptr, struct hid_report, list); | |
93 | if (report->maxfield < 1) { | |
94 | printk(KERN_ERR "hid-plff: no fields in the report\n"); | |
95 | return -ENODEV; | |
96 | } | |
97 | ||
98 | if (report->field[0]->report_count < 4) { | |
99 | printk(KERN_ERR "hid-plff: not enough values in the field\n"); | |
100 | return -ENODEV; | |
101 | } | |
102 | ||
103 | plff = kzalloc(sizeof(struct plff_device), GFP_KERNEL); | |
104 | if (!plff) | |
105 | return -ENOMEM; | |
106 | ||
107 | dev = hidinput->input; | |
108 | ||
109 | set_bit(FF_RUMBLE, dev->ffbit); | |
110 | ||
111 | error = input_ff_create_memless(dev, plff, hid_plff_play); | |
112 | if (error) { | |
113 | kfree(plff); | |
114 | return error; | |
115 | } | |
116 | ||
117 | plff->report = report; | |
118 | plff->report->field[0]->value[0] = 0x00; | |
119 | plff->report->field[0]->value[1] = 0x00; | |
120 | plff->report->field[0]->value[2] = 0x00; | |
121 | plff->report->field[0]->value[3] = 0x00; | |
122 | usbhid_submit_report(hid, plff->report, USB_DIR_OUT); | |
123 | } | |
124 | ||
125 | printk(KERN_INFO "hid-plff: Force feedback for PantherLord USB/PS2 " | |
126 | "2in1 Adapters by Anssi Hannula <anssi.hannula@gmail.com>\n"); | |
127 | ||
128 | return 0; | |
129 | } |