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Sergei Kolzunc0dbcc32010-07-19 12:13:23 +02001/*
2 * Force feedback support for ACRUX game controllers
3 *
4 * From what I have gathered, these devices are mass produced in China
5 * by several vendors. They often share the same design as the original
6 * Xbox 360 controller.
7 *
8 * 1a34:0802 "ACRUX USB GAMEPAD 8116"
Sergei Kolzunb55ebc22011-08-04 00:25:57 -07009 * - tested with an EXEQ EQ-PCU-02090 game controller.
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +020010 *
11 * Copyright (c) 2010 Sergei Kolzun <x0r@dv-life.ru>
12 */
13
14/*
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 *
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 */
29
30#include <linux/input.h>
31#include <linux/slab.h>
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +020032#include <linux/hid.h>
Paul Gortmaker8f86a2c2011-07-03 13:39:48 -040033#include <linux/module.h>
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +020034
35#include "hid-ids.h"
Dmitry Torokhov0ae43812011-03-11 00:27:34 -080036
37#ifdef CONFIG_HID_ACRUX_FF
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +020038
39struct axff_device {
40 struct hid_report *report;
41};
42
43static int axff_play(struct input_dev *dev, void *data, struct ff_effect *effect)
44{
45 struct hid_device *hid = input_get_drvdata(dev);
46 struct axff_device *axff = data;
Sergei Kolzunb55ebc22011-08-04 00:25:57 -070047 struct hid_report *report = axff->report;
48 int field_count = 0;
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +020049 int left, right;
Sergei Kolzunb55ebc22011-08-04 00:25:57 -070050 int i, j;
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +020051
52 left = effect->u.rumble.strong_magnitude;
53 right = effect->u.rumble.weak_magnitude;
54
55 dbg_hid("called with 0x%04x 0x%04x", left, right);
56
57 left = left * 0xff / 0xffff;
58 right = right * 0xff / 0xffff;
59
Sergei Kolzunb55ebc22011-08-04 00:25:57 -070060 for (i = 0; i < report->maxfield; i++) {
61 for (j = 0; j < report->field[i]->report_count; j++) {
62 report->field[i]->value[j] =
63 field_count % 2 ? right : left;
64 field_count++;
65 }
66 }
67
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +020068 dbg_hid("running with 0x%02x 0x%02x", left, right);
Benjamin Tissoiresd88142722013-02-25 11:31:46 +010069 hid_hw_request(hid, axff->report, HID_REQ_SET_REPORT);
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +020070
71 return 0;
72}
73
74static int axff_init(struct hid_device *hid)
75{
76 struct axff_device *axff;
77 struct hid_report *report;
78 struct hid_input *hidinput = list_first_entry(&hid->inputs, struct hid_input, list);
79 struct list_head *report_list =&hid->report_enum[HID_OUTPUT_REPORT].report_list;
80 struct input_dev *dev = hidinput->input;
Sergei Kolzunb55ebc22011-08-04 00:25:57 -070081 int field_count = 0;
82 int i, j;
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +020083 int error;
84
85 if (list_empty(report_list)) {
Joe Perches4291ee32010-12-09 19:29:03 -080086 hid_err(hid, "no output reports found\n");
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +020087 return -ENODEV;
88 }
89
90 report = list_first_entry(report_list, struct hid_report, list);
Sergei Kolzunb55ebc22011-08-04 00:25:57 -070091 for (i = 0; i < report->maxfield; i++) {
92 for (j = 0; j < report->field[i]->report_count; j++) {
93 report->field[i]->value[j] = 0x00;
94 field_count++;
95 }
96 }
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +020097
Sergei Kolzunb55ebc22011-08-04 00:25:57 -070098 if (field_count < 4) {
99 hid_err(hid, "not enough fields in the report: %d\n",
100 field_count);
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +0200101 return -ENODEV;
102 }
103
104 axff = kzalloc(sizeof(struct axff_device), GFP_KERNEL);
105 if (!axff)
106 return -ENOMEM;
107
108 set_bit(FF_RUMBLE, dev->ffbit);
109
110 error = input_ff_create_memless(dev, axff, axff_play);
111 if (error)
112 goto err_free_mem;
113
114 axff->report = report;
Benjamin Tissoiresd88142722013-02-25 11:31:46 +0100115 hid_hw_request(hid, axff->report, HID_REQ_SET_REPORT);
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +0200116
Sergei Kolzunb55ebc22011-08-04 00:25:57 -0700117 hid_info(hid, "Force Feedback for ACRUX game controllers by Sergei Kolzun <x0r@dv-life.ru>\n");
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +0200118
119 return 0;
120
121err_free_mem:
122 kfree(axff);
123 return error;
124}
Dmitry Torokhov0ae43812011-03-11 00:27:34 -0800125#else
126static inline int axff_init(struct hid_device *hid)
127{
128 return 0;
129}
130#endif
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +0200131
132static int ax_probe(struct hid_device *hdev, const struct hid_device_id *id)
133{
134 int error;
135
Joe Perches4291ee32010-12-09 19:29:03 -0800136 dev_dbg(&hdev->dev, "ACRUX HID hardware probe...\n");
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +0200137
138 error = hid_parse(hdev);
139 if (error) {
Joe Perches4291ee32010-12-09 19:29:03 -0800140 hid_err(hdev, "parse failed\n");
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +0200141 return error;
142 }
143
144 error = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
145 if (error) {
Joe Perches4291ee32010-12-09 19:29:03 -0800146 hid_err(hdev, "hw start failed\n");
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +0200147 return error;
148 }
149
150 error = axff_init(hdev);
151 if (error) {
152 /*
153 * Do not fail device initialization completely as device
154 * may still be partially operable, just warn.
155 */
Joe Perches4291ee32010-12-09 19:29:03 -0800156 hid_warn(hdev,
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +0200157 "Failed to enable force feedback support, error: %d\n",
158 error);
159 }
160
Dmitry Torokhov0ae43812011-03-11 00:27:34 -0800161 /*
162 * We need to start polling device right away, otherwise
163 * it will go into a coma.
164 */
165 error = hid_hw_open(hdev);
166 if (error) {
167 dev_err(&hdev->dev, "hw open failed\n");
Axel Linb30d89d2011-07-14 13:07:51 +0800168 hid_hw_stop(hdev);
Dmitry Torokhov0ae43812011-03-11 00:27:34 -0800169 return error;
170 }
171
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +0200172 return 0;
173}
174
Dmitry Torokhov0ae43812011-03-11 00:27:34 -0800175static void ax_remove(struct hid_device *hdev)
176{
177 hid_hw_close(hdev);
178 hid_hw_stop(hdev);
179}
180
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +0200181static const struct hid_device_id ax_devices[] = {
182 { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802), },
183 { }
184};
185MODULE_DEVICE_TABLE(hid, ax_devices);
186
187static struct hid_driver ax_driver = {
Dmitry Torokhov0ae43812011-03-11 00:27:34 -0800188 .name = "acrux",
189 .id_table = ax_devices,
190 .probe = ax_probe,
191 .remove = ax_remove,
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +0200192};
H Hartley Sweetenf4254582012-12-17 15:28:26 -0700193module_hid_driver(ax_driver);
Sergei Kolzunc0dbcc32010-07-19 12:13:23 +0200194
195MODULE_AUTHOR("Sergei Kolzun");
196MODULE_DESCRIPTION("Force feedback support for ACRUX game controllers");
197MODULE_LICENSE("GPL");