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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 "
Jiri Slaby5f022292008-09-18 19:43:32 +020012 * - tested with K??ng Gaming gamepad
Anssi Hannula20eb1272007-01-11 16:51:18 +020013 *
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>
Jiri Slaby5f022292008-09-18 19:43:32 +020041
42#include "hid-ids.h"
43
44#ifdef CONFIG_PANTHERLORD_FF
45#include "usbhid/usbhid.h"
Anssi Hannula20eb1272007-01-11 16:51:18 +020046
47struct plff_device {
48 struct hid_report *report;
49};
50
51static int hid_plff_play(struct input_dev *dev, void *data,
52 struct ff_effect *effect)
53{
Dmitry Torokhove0712982007-05-09 10:17:31 +020054 struct hid_device *hid = input_get_drvdata(dev);
Anssi Hannula20eb1272007-01-11 16:51:18 +020055 struct plff_device *plff = data;
56 int left, right;
57
58 left = effect->u.rumble.strong_magnitude;
59 right = effect->u.rumble.weak_magnitude;
60 debug("called with 0x%04x 0x%04x", left, right);
61
62 left = left * 0x7f / 0xffff;
63 right = right * 0x7f / 0xffff;
64
65 plff->report->field[0]->value[2] = left;
66 plff->report->field[0]->value[3] = right;
67 debug("running with 0x%02x 0x%02x", left, right);
68 usbhid_submit_report(hid, plff->report, USB_DIR_OUT);
69
70 return 0;
71}
72
Jiri Slaby5f022292008-09-18 19:43:32 +020073static int plff_init(struct hid_device *hid)
Anssi Hannula20eb1272007-01-11 16:51:18 +020074{
75 struct plff_device *plff;
76 struct hid_report *report;
77 struct hid_input *hidinput;
78 struct list_head *report_list =
79 &hid->report_enum[HID_OUTPUT_REPORT].report_list;
80 struct list_head *report_ptr = report_list;
81 struct input_dev *dev;
82 int error;
83
Anssi Hannula5edc41ee2007-09-19 16:13:20 +020084 /* The device contains one output report per physical device, all
85 containing 1 field, which contains 4 ff00.0002 usages and 4 16bit
86 absolute values.
Anssi Hannula20eb1272007-01-11 16:51:18 +020087
Anssi Hannula5edc41ee2007-09-19 16:13:20 +020088 The input reports also contain a field which contains
Anssi Hannula20eb1272007-01-11 16:51:18 +020089 8 ff00.0001 usages and 8 boolean values. Their meaning is
90 currently unknown. */
91
92 if (list_empty(report_list)) {
Jiri Slaby79575012008-09-18 12:23:34 +020093 dev_err(&hid->dev, "no output reports found\n");
Anssi Hannula20eb1272007-01-11 16:51:18 +020094 return -ENODEV;
95 }
96
97 list_for_each_entry(hidinput, &hid->inputs, list) {
98
99 report_ptr = report_ptr->next;
100
101 if (report_ptr == report_list) {
Jiri Slaby79575012008-09-18 12:23:34 +0200102 dev_err(&hid->dev, "required output report is "
103 "missing\n");
Anssi Hannula20eb1272007-01-11 16:51:18 +0200104 return -ENODEV;
105 }
106
107 report = list_entry(report_ptr, struct hid_report, list);
108 if (report->maxfield < 1) {
Jiri Slaby79575012008-09-18 12:23:34 +0200109 dev_err(&hid->dev, "no fields in the report\n");
Anssi Hannula20eb1272007-01-11 16:51:18 +0200110 return -ENODEV;
111 }
112
113 if (report->field[0]->report_count < 4) {
Jiri Slaby79575012008-09-18 12:23:34 +0200114 dev_err(&hid->dev, "not enough values in the field\n");
Anssi Hannula20eb1272007-01-11 16:51:18 +0200115 return -ENODEV;
116 }
117
118 plff = kzalloc(sizeof(struct plff_device), GFP_KERNEL);
119 if (!plff)
120 return -ENOMEM;
121
122 dev = hidinput->input;
123
124 set_bit(FF_RUMBLE, dev->ffbit);
125
126 error = input_ff_create_memless(dev, plff, hid_plff_play);
127 if (error) {
128 kfree(plff);
129 return error;
130 }
131
132 plff->report = report;
133 plff->report->field[0]->value[0] = 0x00;
134 plff->report->field[0]->value[1] = 0x00;
135 plff->report->field[0]->value[2] = 0x00;
136 plff->report->field[0]->value[3] = 0x00;
137 usbhid_submit_report(hid, plff->report, USB_DIR_OUT);
138 }
139
Jiri Slaby79575012008-09-18 12:23:34 +0200140 dev_info(&hid->dev, "Force feedback for PantherLord/GreenAsia "
Anssi Hannula5edc41ee2007-09-19 16:13:20 +0200141 "devices by Anssi Hannula <anssi.hannula@gmail.com>\n");
Anssi Hannula20eb1272007-01-11 16:51:18 +0200142
143 return 0;
144}
Jiri Slaby5f022292008-09-18 19:43:32 +0200145#else
146static inline int plff_init(struct hid_device *hid)
147{
148 return 0;
149}
150#endif
151
152static int pl_probe(struct hid_device *hdev, const struct hid_device_id *id)
153{
154 int ret;
155
156 if (id->driver_data)
157 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
158
159 ret = hid_parse(hdev);
160 if (ret) {
161 dev_err(&hdev->dev, "parse failed\n");
162 goto err;
163 }
164
165 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
166 if (ret) {
167 dev_err(&hdev->dev, "hw start failed\n");
168 goto err;
169 }
170
171 plff_init(hdev);
172
173 return 0;
174err:
175 return ret;
176}
177
178static const struct hid_device_id pl_devices[] = {
179 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR),
180 .driver_data = 1 }, /* Twin USB Joystick */
181 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003), }, /* GreenAsia Inc. USB Joystick */
182 { }
183};
184MODULE_DEVICE_TABLE(hid, pl_devices);
185
186static struct hid_driver pl_driver = {
187 .name = "pantherlord",
188 .id_table = pl_devices,
189 .probe = pl_probe,
190};
191
192static int pl_init(void)
193{
194 return hid_register_driver(&pl_driver);
195}
196
197static void pl_exit(void)
198{
199 hid_unregister_driver(&pl_driver);
200}
201
202module_init(pl_init);
203module_exit(pl_exit);
204MODULE_LICENSE("GPL");
205
206HID_COMPAT_LOAD_DRIVER(pantherlord);