linux/drivers/hid/hid-sjoy.c
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   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
  25struct sjoyff_device {
  26        struct hid_report *report;
  27};
  28
  29static 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
  51static 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
 112static inline int sjoyff_init(struct hid_device *hid)
 113{
 114        return 0;
 115}
 116#endif
 117
 118static 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;
 139err:
 140        return ret;
 141}
 142
 143static 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};
 162MODULE_DEVICE_TABLE(hid, sjoy_devices);
 163
 164static struct hid_driver sjoy_driver = {
 165        .name = "smartjoyplus",
 166        .id_table = sjoy_devices,
 167        .probe = sjoy_probe,
 168};
 169module_hid_driver(sjoy_driver);
 170
 171MODULE_LICENSE("GPL");
 172MODULE_AUTHOR("Jussi Kivilinna");
 173
 174