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bb3caf7f AH |
1 | /* |
2 | * Force feedback support for Zeroplus based devices | |
3 | * | |
4 | * Copyright (c) 2005, 2006 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 | ||
987fbc1f | 24 | #include <linux/hid.h> |
bb3caf7f AH |
25 | #include <linux/input.h> |
26 | #include <linux/usb.h> | |
987fbc1f JS |
27 | |
28 | #include "hid-ids.h" | |
29 | ||
0f6f4319 | 30 | #ifdef CONFIG_ZEROPLUS_FF |
987fbc1f | 31 | #include "usbhid/usbhid.h" |
bb3caf7f AH |
32 | |
33 | struct zpff_device { | |
34 | struct hid_report *report; | |
35 | }; | |
36 | ||
987fbc1f | 37 | static int zpff_play(struct input_dev *dev, void *data, |
bb3caf7f AH |
38 | struct ff_effect *effect) |
39 | { | |
e0712985 | 40 | struct hid_device *hid = input_get_drvdata(dev); |
bb3caf7f AH |
41 | struct zpff_device *zpff = data; |
42 | int left, right; | |
43 | ||
44 | /* | |
45 | * The following is specified the other way around in the Zeroplus | |
46 | * datasheet but the order below is correct for the XFX Executioner; | |
47 | * however it is possible that the XFX Executioner is an exception | |
48 | */ | |
49 | ||
50 | left = effect->u.rumble.strong_magnitude; | |
51 | right = effect->u.rumble.weak_magnitude; | |
58037eb9 | 52 | dbg_hid("called with 0x%04x 0x%04x\n", left, right); |
bb3caf7f AH |
53 | |
54 | left = left * 0x7f / 0xffff; | |
55 | right = right * 0x7f / 0xffff; | |
56 | ||
57 | zpff->report->field[2]->value[0] = left; | |
58 | zpff->report->field[3]->value[0] = right; | |
58037eb9 | 59 | dbg_hid("running with 0x%02x 0x%02x\n", left, right); |
4916b3a5 | 60 | usbhid_submit_report(hid, zpff->report, USB_DIR_OUT); |
bb3caf7f AH |
61 | |
62 | return 0; | |
63 | } | |
64 | ||
987fbc1f | 65 | static int zpff_init(struct hid_device *hid) |
bb3caf7f AH |
66 | { |
67 | struct zpff_device *zpff; | |
68 | struct hid_report *report; | |
69 | struct hid_input *hidinput = list_entry(hid->inputs.next, | |
70 | struct hid_input, list); | |
71 | struct list_head *report_list = | |
72 | &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
73 | struct input_dev *dev = hidinput->input; | |
74 | int error; | |
75 | ||
76 | if (list_empty(report_list)) { | |
79575019 | 77 | dev_err(&hid->dev, "no output report found\n"); |
bb3caf7f AH |
78 | return -ENODEV; |
79 | } | |
80 | ||
81 | report = list_entry(report_list->next, struct hid_report, list); | |
82 | ||
83 | if (report->maxfield < 4) { | |
79575019 | 84 | dev_err(&hid->dev, "not enough fields in report\n"); |
bb3caf7f AH |
85 | return -ENODEV; |
86 | } | |
87 | ||
88 | zpff = kzalloc(sizeof(struct zpff_device), GFP_KERNEL); | |
89 | if (!zpff) | |
90 | return -ENOMEM; | |
91 | ||
92 | set_bit(FF_RUMBLE, dev->ffbit); | |
93 | ||
987fbc1f | 94 | error = input_ff_create_memless(dev, zpff, zpff_play); |
bb3caf7f AH |
95 | if (error) { |
96 | kfree(zpff); | |
97 | return error; | |
98 | } | |
99 | ||
100 | zpff->report = report; | |
101 | zpff->report->field[0]->value[0] = 0x00; | |
102 | zpff->report->field[1]->value[0] = 0x02; | |
103 | zpff->report->field[2]->value[0] = 0x00; | |
104 | zpff->report->field[3]->value[0] = 0x00; | |
4916b3a5 | 105 | usbhid_submit_report(hid, zpff->report, USB_DIR_OUT); |
bb3caf7f | 106 | |
79575019 | 107 | dev_info(&hid->dev, "force feedback for Zeroplus based devices by " |
bb3caf7f AH |
108 | "Anssi Hannula <anssi.hannula@gmail.com>\n"); |
109 | ||
110 | return 0; | |
111 | } | |
0f6f4319 JK |
112 | #else |
113 | static inline int zpff_init(struct hid_device *hid) | |
114 | { | |
115 | return 0; | |
116 | } | |
117 | #endif | |
987fbc1f JS |
118 | |
119 | static int zp_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
120 | { | |
121 | int ret; | |
122 | ||
123 | ret = hid_parse(hdev); | |
124 | if (ret) { | |
125 | dev_err(&hdev->dev, "parse failed\n"); | |
126 | goto err; | |
127 | } | |
128 | ||
129 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); | |
130 | if (ret) { | |
131 | dev_err(&hdev->dev, "hw start failed\n"); | |
132 | goto err; | |
133 | } | |
134 | ||
135 | zpff_init(hdev); | |
136 | ||
137 | return 0; | |
138 | err: | |
139 | return ret; | |
140 | } | |
141 | ||
142 | static const struct hid_device_id zp_devices[] = { | |
143 | { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) }, | |
144 | { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) }, | |
145 | { } | |
146 | }; | |
147 | MODULE_DEVICE_TABLE(hid, zp_devices); | |
148 | ||
149 | static struct hid_driver zp_driver = { | |
150 | .name = "zeroplus", | |
151 | .id_table = zp_devices, | |
152 | .probe = zp_probe, | |
153 | }; | |
154 | ||
a24f423b | 155 | static int __init zp_init(void) |
987fbc1f JS |
156 | { |
157 | return hid_register_driver(&zp_driver); | |
158 | } | |
159 | ||
a24f423b | 160 | static void __exit zp_exit(void) |
987fbc1f JS |
161 | { |
162 | hid_unregister_driver(&zp_driver); | |
163 | } | |
164 | ||
165 | module_init(zp_init); | |
166 | module_exit(zp_exit); | |
167 | MODULE_LICENSE("GPL"); |