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0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /*
0003  *  Force feedback support for SmartJoy PLUS PS2->USB adapter
0004  *
0005  *  Copyright (c) 2009 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
0006  *
0007  *  Based of hid-pl.c and hid-gaff.c
0008  *   Copyright (c) 2007, 2009 Anssi Hannula <anssi.hannula@gmail.com>
0009  *   Copyright (c) 2008 Lukasz Lubojanski <lukasz@lubojanski.info>
0010  */
0011 
0012 /*
0013  */
0014 
0015 /* #define DEBUG */
0016 
0017 #include <linux/input.h>
0018 #include <linux/slab.h>
0019 #include <linux/hid.h>
0020 #include <linux/module.h>
0021 #include "hid-ids.h"
0022 
0023 #ifdef CONFIG_SMARTJOYPLUS_FF
0024 
0025 struct sjoyff_device {
0026     struct hid_report *report;
0027 };
0028 
0029 static int hid_sjoyff_play(struct input_dev *dev, void *data,
0030              struct ff_effect *effect)
0031 {
0032     struct hid_device *hid = input_get_drvdata(dev);
0033     struct sjoyff_device *sjoyff = data;
0034     u32 left, right;
0035 
0036     left = effect->u.rumble.strong_magnitude;
0037     right = effect->u.rumble.weak_magnitude;
0038     dev_dbg(&dev->dev, "called with 0x%08x 0x%08x\n", left, right);
0039 
0040     left = left * 0xff / 0xffff;
0041     right = (right != 0); /* on/off only */
0042 
0043     sjoyff->report->field[0]->value[1] = right;
0044     sjoyff->report->field[0]->value[2] = left;
0045     dev_dbg(&dev->dev, "running with 0x%02x 0x%02x\n", left, right);
0046     hid_hw_request(hid, sjoyff->report, HID_REQ_SET_REPORT);
0047 
0048     return 0;
0049 }
0050 
0051 static int sjoyff_init(struct hid_device *hid)
0052 {
0053     struct sjoyff_device *sjoyff;
0054     struct hid_report *report;
0055     struct hid_input *hidinput;
0056     struct list_head *report_list =
0057             &hid->report_enum[HID_OUTPUT_REPORT].report_list;
0058     struct list_head *report_ptr = report_list;
0059     struct input_dev *dev;
0060     int error;
0061 
0062     if (list_empty(report_list)) {
0063         hid_err(hid, "no output reports found\n");
0064         return -ENODEV;
0065     }
0066 
0067     list_for_each_entry(hidinput, &hid->inputs, list) {
0068         report_ptr = report_ptr->next;
0069 
0070         if (report_ptr == report_list) {
0071             hid_err(hid, "required output report is missing\n");
0072             return -ENODEV;
0073         }
0074 
0075         report = list_entry(report_ptr, struct hid_report, list);
0076         if (report->maxfield < 1) {
0077             hid_err(hid, "no fields in the report\n");
0078             return -ENODEV;
0079         }
0080 
0081         if (report->field[0]->report_count < 3) {
0082             hid_err(hid, "not enough values in the field\n");
0083             return -ENODEV;
0084         }
0085 
0086         sjoyff = kzalloc(sizeof(struct sjoyff_device), GFP_KERNEL);
0087         if (!sjoyff)
0088             return -ENOMEM;
0089 
0090         dev = hidinput->input;
0091 
0092         set_bit(FF_RUMBLE, dev->ffbit);
0093 
0094         error = input_ff_create_memless(dev, sjoyff, hid_sjoyff_play);
0095         if (error) {
0096             kfree(sjoyff);
0097             return error;
0098         }
0099 
0100         sjoyff->report = report;
0101         sjoyff->report->field[0]->value[0] = 0x01;
0102         sjoyff->report->field[0]->value[1] = 0x00;
0103         sjoyff->report->field[0]->value[2] = 0x00;
0104         hid_hw_request(hid, sjoyff->report, HID_REQ_SET_REPORT);
0105     }
0106 
0107     hid_info(hid, "Force feedback for SmartJoy PLUS PS2/USB adapter\n");
0108 
0109     return 0;
0110 }
0111 #else
0112 static inline int sjoyff_init(struct hid_device *hid)
0113 {
0114     return 0;
0115 }
0116 #endif
0117 
0118 static int sjoy_probe(struct hid_device *hdev, const struct hid_device_id *id)
0119 {
0120     int ret;
0121 
0122     hdev->quirks |= id->driver_data;
0123 
0124     ret = hid_parse(hdev);
0125     if (ret) {
0126         hid_err(hdev, "parse failed\n");
0127         goto err;
0128     }
0129 
0130     ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
0131     if (ret) {
0132         hid_err(hdev, "hw start failed\n");
0133         goto err;
0134     }
0135 
0136     sjoyff_init(hdev);
0137 
0138     return 0;
0139 err:
0140     return ret;
0141 }
0142 
0143 static const struct hid_device_id sjoy_devices[] = {
0144     { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO),
0145         .driver_data = HID_QUIRK_NOGET },
0146     { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO),
0147         .driver_data = HID_QUIRK_MULTI_INPUT | HID_QUIRK_NOGET |
0148                    HID_QUIRK_SKIP_OUTPUT_REPORTS },
0149     { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO),
0150         .driver_data = HID_QUIRK_MULTI_INPUT | HID_QUIRK_NOGET |
0151                    HID_QUIRK_SKIP_OUTPUT_REPORTS },
0152     { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
0153     { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
0154     { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD),
0155         .driver_data = HID_QUIRK_MULTI_INPUT |
0156                    HID_QUIRK_SKIP_OUTPUT_REPORTS },
0157     { HID_USB_DEVICE(USB_VENDOR_ID_PLAYDOTCOM, USB_DEVICE_ID_PLAYDOTCOM_EMS_USBII),
0158         .driver_data = HID_QUIRK_MULTI_INPUT |
0159                    HID_QUIRK_SKIP_OUTPUT_REPORTS },
0160     { }
0161 };
0162 MODULE_DEVICE_TABLE(hid, sjoy_devices);
0163 
0164 static struct hid_driver sjoy_driver = {
0165     .name = "smartjoyplus",
0166     .id_table = sjoy_devices,
0167     .probe = sjoy_probe,
0168 };
0169 module_hid_driver(sjoy_driver);
0170 
0171 MODULE_LICENSE("GPL");
0172 MODULE_AUTHOR("Jussi Kivilinna");
0173