1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  Force feedback support for SmartJoy PLUS PS2->USB adapter
4  *
5  *  Copyright (c) 2009 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
6  *
7  *  Based of hid-pl.c and hid-gaff.c
8  *   Copyright (c) 2007, 2009 Anssi Hannula <anssi.hannula@gmail.com>
9  *   Copyright (c) 2008 Lukasz Lubojanski <lukasz@lubojanski.info>
10  */
11 
12 /*
13  */
14 
15 /* #define DEBUG */
16 
17 #include <linux/input.h>
18 #include <linux/slab.h>
19 #include <linux/hid.h>
20 #include <linux/module.h>
21 #include "hid-ids.h"
22 
23 #ifdef CONFIG_SMARTJOYPLUS_FF
24 
25 struct sjoyff_device {
26 	struct hid_report *report;
27 };
28 
hid_sjoyff_play(struct input_dev * dev,void * data,struct ff_effect * effect)29 static int hid_sjoyff_play(struct input_dev *dev, void *data,
30 			 struct ff_effect *effect)
31 {
32 	struct hid_device *hid = input_get_drvdata(dev);
33 	struct sjoyff_device *sjoyff = data;
34 	u32 left, right;
35 
36 	left = effect->u.rumble.strong_magnitude;
37 	right = effect->u.rumble.weak_magnitude;
38 	dev_dbg(&dev->dev, "called with 0x%08x 0x%08x\n", left, right);
39 
40 	left = left * 0xff / 0xffff;
41 	right = (right != 0); /* on/off only */
42 
43 	sjoyff->report->field[0]->value[1] = right;
44 	sjoyff->report->field[0]->value[2] = left;
45 	dev_dbg(&dev->dev, "running with 0x%02x 0x%02x\n", left, right);
46 	hid_hw_request(hid, sjoyff->report, HID_REQ_SET_REPORT);
47 
48 	return 0;
49 }
50 
sjoyff_init(struct hid_device * hid)51 static int sjoyff_init(struct hid_device *hid)
52 {
53 	struct sjoyff_device *sjoyff;
54 	struct hid_report *report;
55 	struct hid_input *hidinput;
56 	struct list_head *report_list =
57 			&hid->report_enum[HID_OUTPUT_REPORT].report_list;
58 	struct list_head *report_ptr = report_list;
59 	struct input_dev *dev;
60 	int error;
61 
62 	if (list_empty(report_list)) {
63 		hid_err(hid, "no output reports found\n");
64 		return -ENODEV;
65 	}
66 
67 	list_for_each_entry(hidinput, &hid->inputs, list) {
68 		report_ptr = report_ptr->next;
69 
70 		if (report_ptr == report_list) {
71 			hid_err(hid, "required output report is missing\n");
72 			return -ENODEV;
73 		}
74 
75 		report = list_entry(report_ptr, struct hid_report, list);
76 		if (report->maxfield < 1) {
77 			hid_err(hid, "no fields in the report\n");
78 			return -ENODEV;
79 		}
80 
81 		if (report->field[0]->report_count < 3) {
82 			hid_err(hid, "not enough values in the field\n");
83 			return -ENODEV;
84 		}
85 
86 		sjoyff = kzalloc(sizeof(struct sjoyff_device), GFP_KERNEL);
87 		if (!sjoyff)
88 			return -ENOMEM;
89 
90 		dev = hidinput->input;
91 
92 		set_bit(FF_RUMBLE, dev->ffbit);
93 
94 		error = input_ff_create_memless(dev, sjoyff, hid_sjoyff_play);
95 		if (error) {
96 			kfree(sjoyff);
97 			return error;
98 		}
99 
100 		sjoyff->report = report;
101 		sjoyff->report->field[0]->value[0] = 0x01;
102 		sjoyff->report->field[0]->value[1] = 0x00;
103 		sjoyff->report->field[0]->value[2] = 0x00;
104 		hid_hw_request(hid, sjoyff->report, HID_REQ_SET_REPORT);
105 	}
106 
107 	hid_info(hid, "Force feedback for SmartJoy PLUS PS2/USB adapter\n");
108 
109 	return 0;
110 }
111 #else
sjoyff_init(struct hid_device * hid)112 static inline int sjoyff_init(struct hid_device *hid)
113 {
114 	return 0;
115 }
116 #endif
117 
sjoy_probe(struct hid_device * hdev,const struct hid_device_id * id)118 static int sjoy_probe(struct hid_device *hdev, const struct hid_device_id *id)
119 {
120 	int ret;
121 
122 	hdev->quirks |= id->driver_data;
123 
124 	ret = hid_parse(hdev);
125 	if (ret) {
126 		hid_err(hdev, "parse failed\n");
127 		goto err;
128 	}
129 
130 	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
131 	if (ret) {
132 		hid_err(hdev, "hw start failed\n");
133 		goto err;
134 	}
135 
136 	sjoyff_init(hdev);
137 
138 	return 0;
139 err:
140 	return ret;
141 }
142 
143 static const struct hid_device_id sjoy_devices[] = {
144 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO),
145 		.driver_data = HID_QUIRK_NOGET },
146 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO),
147 		.driver_data = HID_QUIRK_MULTI_INPUT | HID_QUIRK_NOGET |
148 			       HID_QUIRK_SKIP_OUTPUT_REPORTS },
149 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO),
150 		.driver_data = HID_QUIRK_MULTI_INPUT | HID_QUIRK_NOGET |
151 			       HID_QUIRK_SKIP_OUTPUT_REPORTS },
152 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
153 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
154 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD),
155 		.driver_data = HID_QUIRK_MULTI_INPUT |
156 			       HID_QUIRK_SKIP_OUTPUT_REPORTS },
157 	{ HID_USB_DEVICE(USB_VENDOR_ID_PLAYDOTCOM, USB_DEVICE_ID_PLAYDOTCOM_EMS_USBII),
158 		.driver_data = HID_QUIRK_MULTI_INPUT |
159 			       HID_QUIRK_SKIP_OUTPUT_REPORTS },
160 	{ }
161 };
162 MODULE_DEVICE_TABLE(hid, sjoy_devices);
163 
164 static struct hid_driver sjoy_driver = {
165 	.name = "smartjoyplus",
166 	.id_table = sjoy_devices,
167 	.probe = sjoy_probe,
168 };
169 module_hid_driver(sjoy_driver);
170 
171 MODULE_LICENSE("GPL");
172 MODULE_AUTHOR("Jussi Kivilinna");
173 
174