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