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Anssi Hannula20eb1272007-01-11 16:51:18 +02001/*
Anssi Hannula5edc41ee2007-09-19 16:13:20 +02002 * 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 "
Anssi Hannula27a9c172009-02-27 23:47:00 +020012 * - tested with König Gaming gamepad
Anssi Hannula20eb1272007-01-11 16:51:18 +020013 *
Anssi Hannula27a9c172009-02-27 23:47:00 +020014 * 0e8f:0003 "GASIA USB Gamepad"
15 * - another version of the König gamepad
16 *
17 * Copyright (c) 2007, 2009 Anssi Hannula <anssi.hannula@gmail.com>
Anssi Hannula20eb1272007-01-11 16:51:18 +020018 */
19
20/*
21 * This program is free software; you can redistribute it and/or modify
22 * it under the terms of the GNU General Public License as published by
23 * the Free Software Foundation; either version 2 of the License, or
24 * (at your option) any later version.
25 *
26 * This program is distributed in the hope that it will be useful,
27 * but WITHOUT ANY WARRANTY; without even the implied warranty of
28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
29 * GNU General Public License for more details.
30 *
31 * You should have received a copy of the GNU General Public License
32 * along with this program; if not, write to the Free Software
33 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
34 */
35
36
37/* #define DEBUG */
38
39#define debug(format, arg...) pr_debug("hid-plff: " format "\n" , ## arg)
40
41#include <linux/input.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090042#include <linux/slab.h>
Anssi Hannula20eb1272007-01-11 16:51:18 +020043#include <linux/usb.h>
44#include <linux/hid.h>
Jiri Slaby5f022292008-09-18 19:43:32 +020045
46#include "hid-ids.h"
47
48#ifdef CONFIG_PANTHERLORD_FF
49#include "usbhid/usbhid.h"
Anssi Hannula20eb1272007-01-11 16:51:18 +020050
51struct plff_device {
52 struct hid_report *report;
Anssi Hannula27a9c172009-02-27 23:47:00 +020053 s32 *strong;
54 s32 *weak;
Anssi Hannula20eb1272007-01-11 16:51:18 +020055};
56
57static int hid_plff_play(struct input_dev *dev, void *data,
58 struct ff_effect *effect)
59{
Dmitry Torokhove0712982007-05-09 10:17:31 +020060 struct hid_device *hid = input_get_drvdata(dev);
Anssi Hannula20eb1272007-01-11 16:51:18 +020061 struct plff_device *plff = data;
62 int left, right;
63
64 left = effect->u.rumble.strong_magnitude;
65 right = effect->u.rumble.weak_magnitude;
66 debug("called with 0x%04x 0x%04x", left, right);
67
68 left = left * 0x7f / 0xffff;
69 right = right * 0x7f / 0xffff;
70
Anssi Hannula27a9c172009-02-27 23:47:00 +020071 *plff->strong = left;
72 *plff->weak = right;
Anssi Hannula20eb1272007-01-11 16:51:18 +020073 debug("running with 0x%02x 0x%02x", left, right);
74 usbhid_submit_report(hid, plff->report, USB_DIR_OUT);
75
76 return 0;
77}
78
Jiri Slaby5f022292008-09-18 19:43:32 +020079static int plff_init(struct hid_device *hid)
Anssi Hannula20eb1272007-01-11 16:51:18 +020080{
81 struct plff_device *plff;
82 struct hid_report *report;
83 struct hid_input *hidinput;
84 struct list_head *report_list =
85 &hid->report_enum[HID_OUTPUT_REPORT].report_list;
86 struct list_head *report_ptr = report_list;
87 struct input_dev *dev;
88 int error;
Anssi Hannula27a9c172009-02-27 23:47:00 +020089 s32 *strong;
90 s32 *weak;
Anssi Hannula20eb1272007-01-11 16:51:18 +020091
Anssi Hannula5edc41ee2007-09-19 16:13:20 +020092 /* The device contains one output report per physical device, all
93 containing 1 field, which contains 4 ff00.0002 usages and 4 16bit
94 absolute values.
Anssi Hannula20eb1272007-01-11 16:51:18 +020095
Anssi Hannula5edc41ee2007-09-19 16:13:20 +020096 The input reports also contain a field which contains
Anssi Hannula20eb1272007-01-11 16:51:18 +020097 8 ff00.0001 usages and 8 boolean values. Their meaning is
Anssi Hannula27a9c172009-02-27 23:47:00 +020098 currently unknown.
99
100 A version of the 0e8f:0003 exists that has all the values in
101 separate fields and misses the extra input field, thus resembling
102 Zeroplus (hid-zpff) devices.
103 */
Anssi Hannula20eb1272007-01-11 16:51:18 +0200104
105 if (list_empty(report_list)) {
Jiri Slaby79575012008-09-18 12:23:34 +0200106 dev_err(&hid->dev, "no output reports found\n");
Anssi Hannula20eb1272007-01-11 16:51:18 +0200107 return -ENODEV;
108 }
109
110 list_for_each_entry(hidinput, &hid->inputs, list) {
111
112 report_ptr = report_ptr->next;
113
114 if (report_ptr == report_list) {
Jiri Slaby79575012008-09-18 12:23:34 +0200115 dev_err(&hid->dev, "required output report is "
116 "missing\n");
Anssi Hannula20eb1272007-01-11 16:51:18 +0200117 return -ENODEV;
118 }
119
120 report = list_entry(report_ptr, struct hid_report, list);
121 if (report->maxfield < 1) {
Jiri Slaby79575012008-09-18 12:23:34 +0200122 dev_err(&hid->dev, "no fields in the report\n");
Anssi Hannula20eb1272007-01-11 16:51:18 +0200123 return -ENODEV;
124 }
125
Anssi Hannula27a9c172009-02-27 23:47:00 +0200126 if (report->field[0]->report_count >= 4) {
127 report->field[0]->value[0] = 0x00;
128 report->field[0]->value[1] = 0x00;
129 strong = &report->field[0]->value[2];
130 weak = &report->field[0]->value[3];
131 debug("detected single-field device");
132 } else if (report->maxfield >= 4 && report->field[0]->maxusage == 1 &&
133 report->field[0]->usage[0].hid == (HID_UP_LED | 0x43)) {
134 report->field[0]->value[0] = 0x00;
135 report->field[1]->value[0] = 0x00;
136 strong = &report->field[2]->value[0];
137 weak = &report->field[3]->value[0];
138 debug("detected 4-field device");
139 } else {
140 dev_err(&hid->dev, "not enough fields or values\n");
Anssi Hannula20eb1272007-01-11 16:51:18 +0200141 return -ENODEV;
142 }
143
144 plff = kzalloc(sizeof(struct plff_device), GFP_KERNEL);
145 if (!plff)
146 return -ENOMEM;
147
148 dev = hidinput->input;
149
150 set_bit(FF_RUMBLE, dev->ffbit);
151
152 error = input_ff_create_memless(dev, plff, hid_plff_play);
153 if (error) {
154 kfree(plff);
155 return error;
156 }
157
158 plff->report = report;
Anssi Hannula27a9c172009-02-27 23:47:00 +0200159 plff->strong = strong;
160 plff->weak = weak;
161
162 *strong = 0x00;
163 *weak = 0x00;
Anssi Hannula20eb1272007-01-11 16:51:18 +0200164 usbhid_submit_report(hid, plff->report, USB_DIR_OUT);
165 }
166
Jiri Slaby79575012008-09-18 12:23:34 +0200167 dev_info(&hid->dev, "Force feedback for PantherLord/GreenAsia "
Anssi Hannula5edc41ee2007-09-19 16:13:20 +0200168 "devices by Anssi Hannula <anssi.hannula@gmail.com>\n");
Anssi Hannula20eb1272007-01-11 16:51:18 +0200169
170 return 0;
171}
Jiri Slaby5f022292008-09-18 19:43:32 +0200172#else
173static inline int plff_init(struct hid_device *hid)
174{
175 return 0;
176}
177#endif
178
179static int pl_probe(struct hid_device *hdev, const struct hid_device_id *id)
180{
181 int ret;
182
183 if (id->driver_data)
184 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
185
186 ret = hid_parse(hdev);
187 if (ret) {
188 dev_err(&hdev->dev, "parse failed\n");
189 goto err;
190 }
191
192 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
193 if (ret) {
194 dev_err(&hdev->dev, "hw start failed\n");
195 goto err;
196 }
197
198 plff_init(hdev);
199
200 return 0;
201err:
202 return ret;
203}
204
205static const struct hid_device_id pl_devices[] = {
206 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR),
207 .driver_data = 1 }, /* Twin USB Joystick */
Jiri Kosina578f3a32008-11-20 15:55:38 +0100208 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR),
209 .driver_data = 1 }, /* Twin USB Joystick */
Anssi Hannula27a9c172009-02-27 23:47:00 +0200210 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003), },
Jiri Slaby5f022292008-09-18 19:43:32 +0200211 { }
212};
213MODULE_DEVICE_TABLE(hid, pl_devices);
214
215static struct hid_driver pl_driver = {
216 .name = "pantherlord",
217 .id_table = pl_devices,
218 .probe = pl_probe,
219};
220
Peter Huewea24f423b2009-07-02 19:08:38 +0200221static int __init pl_init(void)
Jiri Slaby5f022292008-09-18 19:43:32 +0200222{
223 return hid_register_driver(&pl_driver);
224}
225
Peter Huewea24f423b2009-07-02 19:08:38 +0200226static void __exit pl_exit(void)
Jiri Slaby5f022292008-09-18 19:43:32 +0200227{
228 hid_unregister_driver(&pl_driver);
229}
230
231module_init(pl_init);
232module_exit(pl_exit);
233MODULE_LICENSE("GPL");