Commit | Line | Data |
---|---|---|
20eb1279 | 1 | /* |
5edc41ee AH |
2 | * Force feedback support for PantherLord/GreenAsia based devices |
3 | * | |
4 | * The devices are distributed under various names and the same USB device ID | |
5 | * can be used in both adapters and actual game controllers. | |
6 | * | |
7 | * 0810:0001 "Twin USB Joystick" | |
8 | * - tested with PantherLord USB/PS2 2in1 Adapter | |
9 | * - contains two reports, one for each port (HID_QUIRK_MULTI_INPUT) | |
10 | * | |
11 | * 0e8f:0003 "GreenAsia Inc. USB Joystick " | |
12 | * - tested with Köng Gaming gamepad | |
20eb1279 AH |
13 | * |
14 | * Copyright (c) 2007 Anssi Hannula <anssi.hannula@gmail.com> | |
15 | */ | |
16 | ||
17 | /* | |
18 | * This program is free software; you can redistribute it and/or modify | |
19 | * it under the terms of the GNU General Public License as published by | |
20 | * the Free Software Foundation; either version 2 of the License, or | |
21 | * (at your option) any later version. | |
22 | * | |
23 | * This program is distributed in the hope that it will be useful, | |
24 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
25 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
26 | * GNU General Public License for more details. | |
27 | * | |
28 | * You should have received a copy of the GNU General Public License | |
29 | * along with this program; if not, write to the Free Software | |
30 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
31 | */ | |
32 | ||
33 | ||
34 | /* #define DEBUG */ | |
35 | ||
36 | #define debug(format, arg...) pr_debug("hid-plff: " format "\n" , ## arg) | |
37 | ||
38 | #include <linux/input.h> | |
39 | #include <linux/usb.h> | |
40 | #include <linux/hid.h> | |
41 | #include "usbhid.h" | |
42 | ||
43 | struct plff_device { | |
44 | struct hid_report *report; | |
45 | }; | |
46 | ||
47 | static int hid_plff_play(struct input_dev *dev, void *data, | |
48 | struct ff_effect *effect) | |
49 | { | |
e0712985 | 50 | struct hid_device *hid = input_get_drvdata(dev); |
20eb1279 AH |
51 | struct plff_device *plff = data; |
52 | int left, right; | |
53 | ||
54 | left = effect->u.rumble.strong_magnitude; | |
55 | right = effect->u.rumble.weak_magnitude; | |
56 | debug("called with 0x%04x 0x%04x", left, right); | |
57 | ||
58 | left = left * 0x7f / 0xffff; | |
59 | right = right * 0x7f / 0xffff; | |
60 | ||
61 | plff->report->field[0]->value[2] = left; | |
62 | plff->report->field[0]->value[3] = right; | |
63 | debug("running with 0x%02x 0x%02x", left, right); | |
64 | usbhid_submit_report(hid, plff->report, USB_DIR_OUT); | |
65 | ||
66 | return 0; | |
67 | } | |
68 | ||
69 | int hid_plff_init(struct hid_device *hid) | |
70 | { | |
71 | struct plff_device *plff; | |
72 | struct hid_report *report; | |
73 | struct hid_input *hidinput; | |
74 | struct list_head *report_list = | |
75 | &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
76 | struct list_head *report_ptr = report_list; | |
77 | struct input_dev *dev; | |
78 | int error; | |
79 | ||
5edc41ee AH |
80 | /* The device contains one output report per physical device, all |
81 | containing 1 field, which contains 4 ff00.0002 usages and 4 16bit | |
82 | absolute values. | |
20eb1279 | 83 | |
5edc41ee | 84 | The input reports also contain a field which contains |
20eb1279 AH |
85 | 8 ff00.0001 usages and 8 boolean values. Their meaning is |
86 | currently unknown. */ | |
87 | ||
88 | if (list_empty(report_list)) { | |
89 | printk(KERN_ERR "hid-plff: no output reports found\n"); | |
90 | return -ENODEV; | |
91 | } | |
92 | ||
93 | list_for_each_entry(hidinput, &hid->inputs, list) { | |
94 | ||
95 | report_ptr = report_ptr->next; | |
96 | ||
97 | if (report_ptr == report_list) { | |
98 | printk(KERN_ERR "hid-plff: required output report is missing\n"); | |
99 | return -ENODEV; | |
100 | } | |
101 | ||
102 | report = list_entry(report_ptr, struct hid_report, list); | |
103 | if (report->maxfield < 1) { | |
104 | printk(KERN_ERR "hid-plff: no fields in the report\n"); | |
105 | return -ENODEV; | |
106 | } | |
107 | ||
108 | if (report->field[0]->report_count < 4) { | |
109 | printk(KERN_ERR "hid-plff: not enough values in the field\n"); | |
110 | return -ENODEV; | |
111 | } | |
112 | ||
113 | plff = kzalloc(sizeof(struct plff_device), GFP_KERNEL); | |
114 | if (!plff) | |
115 | return -ENOMEM; | |
116 | ||
117 | dev = hidinput->input; | |
118 | ||
119 | set_bit(FF_RUMBLE, dev->ffbit); | |
120 | ||
121 | error = input_ff_create_memless(dev, plff, hid_plff_play); | |
122 | if (error) { | |
123 | kfree(plff); | |
124 | return error; | |
125 | } | |
126 | ||
127 | plff->report = report; | |
128 | plff->report->field[0]->value[0] = 0x00; | |
129 | plff->report->field[0]->value[1] = 0x00; | |
130 | plff->report->field[0]->value[2] = 0x00; | |
131 | plff->report->field[0]->value[3] = 0x00; | |
132 | usbhid_submit_report(hid, plff->report, USB_DIR_OUT); | |
133 | } | |
134 | ||
5edc41ee AH |
135 | printk(KERN_INFO "hid-plff: Force feedback for PantherLord/GreenAsia " |
136 | "devices by Anssi Hannula <anssi.hannula@gmail.com>\n"); | |
20eb1279 AH |
137 | |
138 | return 0; | |
139 | } |