1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Force feedback support for Zeroplus based devices
*
* Copyright (c) 2005, 2006 Anssi Hannula <anssi.hannula@gmail.com>
*/
/*
*/
#include <linux/hid.h>
#include <linux/input.h>
#include <linux/slab.h>
#include <linux/module.h>
#include "hid-ids.h"
#ifdef CONFIG_ZEROPLUS_FF
struct zpff_device {
struct hid_report *report;
};
static int zpff_play(struct input_dev *dev, void *data,
struct ff_effect *effect)
{
struct hid_device *hid = input_get_drvdata(dev);
struct zpff_device *zpff = data;
int left, right;
/*
* The following is specified the other way around in the Zeroplus
* datasheet but the order below is correct for the XFX Executioner;
* however it is possible that the XFX Executioner is an exception
*/
left = effect->u.rumble.strong_magnitude;
right = effect->u.rumble.weak_magnitude;
dbg_hid("called with 0x%04x 0x%04x\n", left, right);
left = left * 0x7f / 0xffff;
right = right * 0x7f / 0xffff;
zpff->report->field[2]->value[0] = left;
zpff->report->field[3]->value[0] = right;
dbg_hid("running with 0x%02x 0x%02x\n", left, right);
hid_hw_request(hid, zpff->report, HID_REQ_SET_REPORT);
return 0;
}
static int zpff_init(struct hid_device *hid)
{
struct zpff_device *zpff;
struct hid_report *report;
struct hid_input *hidinput;
struct input_dev *dev;
int i, error;
if (list_empty(&hid->inputs)) {
hid_err(hid, "no inputs found\n");
return -ENODEV;
}
hidinput = list_entry(hid->inputs.next, struct hid_input, list);
dev = hidinput->input;
for (i = 0; i < 4; i++) {
report = hid_validate_values(hid, HID_OUTPUT_REPORT, 0, i, 1);
if (!report)
return -ENODEV;
}
zpff = kzalloc(sizeof(struct zpff_device), GFP_KERNEL);
if (!zpff)
return -ENOMEM;
set_bit(FF_RUMBLE, dev->ffbit);
error = input_ff_create_memless(dev, zpff, zpff_play);
if (error) {
kfree(zpff);
return error;
}
zpff->report = report;
zpff->report->field[0]->value[0] = 0x00;
zpff->report->field[1]->value[0] = 0x02;
zpff->report->field[2]->value[0] = 0x00;
zpff->report->field[3]->value[0] = 0x00;
hid_hw_request(hid, zpff->report, HID_REQ_SET_REPORT);
hid_info(hid, "force feedback for Zeroplus based devices by Anssi Hannula <anssi.hannula@gmail.com>\n");
return 0;
}
#else
static inline int zpff_init(struct hid_device *hid)
{
return 0;
}
#endif
static int zp_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
int ret;
ret = hid_parse(hdev);
if (ret) {
hid_err(hdev, "parse failed\n");
goto err;
}
ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
if (ret) {
hid_err(hdev, "hw start failed\n");
goto err;
}
zpff_init(hdev);
return 0;
err:
return ret;
}
static const struct hid_device_id zp_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
{ }
};
MODULE_DEVICE_TABLE(hid, zp_devices);
static struct hid_driver zp_driver = {
.name = "zeroplus",
.id_table = zp_devices,
.probe = zp_probe,
};
module_hid_driver(zp_driver);
MODULE_LICENSE("GPL");
|
