1 /* 2 * Force feedback support for Mayflash game controller adapters. 3 * 4 * These devices are manufactured by Mayflash but identify themselves 5 * using the vendor ID of DragonRise Inc. 6 * 7 * Tested with: 8 * 0079:1801 "DragonRise Inc. Mayflash PS3 Game Controller Adapter" 9 * 10 * The following adapters probably work too, but need to be tested: 11 * 0079:1800 "DragonRise Inc. Mayflash WIIU Game Controller Adapter" 12 * 0079:1843 "DragonRise Inc. Mayflash GameCube Game Controller Adapter" 13 * 14 * Copyright (c) 2016 Marcel Hasler <mahasler@gmail.com> 15 */ 16 17 /* 18 * This program is free software; you can redistribute it and/or modify 19 * it under the terms of the GNU General Public License as published by 20 * the Free Software Foundation; either version 2 of the License, or 21 * (at your option) any later version. 22 * 23 * This program is distributed in the hope that it will be useful, 24 * but WITHOUT ANY WARRANTY; without even the implied warranty of 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 26 * GNU General Public License for more details. 27 */ 28 29 #include <linux/input.h> 30 #include <linux/slab.h> 31 #include <linux/hid.h> 32 #include <linux/module.h> 33 34 #include "hid-ids.h" 35 36 struct mf_device { 37 struct hid_report *report; 38 }; 39 40 static int mf_play(struct input_dev *dev, void *data, struct ff_effect *effect) 41 { 42 struct hid_device *hid = input_get_drvdata(dev); 43 struct mf_device *mf = data; 44 int strong, weak; 45 46 strong = effect->u.rumble.strong_magnitude; 47 weak = effect->u.rumble.weak_magnitude; 48 49 dbg_hid("Called with 0x%04x 0x%04x.\n", strong, weak); 50 51 strong = strong * 0xff / 0xffff; 52 weak = weak * 0xff / 0xffff; 53 54 dbg_hid("Running with 0x%02x 0x%02x.\n", strong, weak); 55 56 mf->report->field[0]->value[0] = weak; 57 mf->report->field[0]->value[1] = strong; 58 hid_hw_request(hid, mf->report, HID_REQ_SET_REPORT); 59 60 return 0; 61 } 62 63 static int mf_init(struct hid_device *hid) 64 { 65 struct mf_device *mf; 66 67 struct list_head *report_list = 68 &hid->report_enum[HID_OUTPUT_REPORT].report_list; 69 70 struct list_head *report_ptr; 71 struct hid_report *report; 72 73 struct list_head *input_ptr = &hid->inputs; 74 struct hid_input *input; 75 76 struct input_dev *dev; 77 78 int error; 79 80 /* Setup each of the four inputs */ 81 list_for_each(report_ptr, report_list) { 82 report = list_entry(report_ptr, struct hid_report, list); 83 84 if (report->maxfield < 1 || report->field[0]->report_count < 2) { 85 hid_err(hid, "Invalid report, this should never happen!\n"); 86 return -ENODEV; 87 } 88 89 if (list_is_last(input_ptr, &hid->inputs)) { 90 hid_err(hid, "Missing input, this should never happen!\n"); 91 return -ENODEV; 92 } 93 94 input_ptr = input_ptr->next; 95 input = list_entry(input_ptr, struct hid_input, list); 96 97 mf = kzalloc(sizeof(struct mf_device), GFP_KERNEL); 98 if (!mf) 99 return -ENOMEM; 100 101 dev = input->input; 102 set_bit(FF_RUMBLE, dev->ffbit); 103 104 error = input_ff_create_memless(dev, mf, mf_play); 105 if (error) { 106 kfree(mf); 107 return error; 108 } 109 110 mf->report = report; 111 mf->report->field[0]->value[0] = 0x00; 112 mf->report->field[0]->value[1] = 0x00; 113 hid_hw_request(hid, mf->report, HID_REQ_SET_REPORT); 114 } 115 116 hid_info(hid, "Force feedback for HJZ Mayflash game controller " 117 "adapters by Marcel Hasler <mahasler@gmail.com>\n"); 118 119 return 0; 120 } 121 122 static int mf_probe(struct hid_device *hid, const struct hid_device_id *id) 123 { 124 int error; 125 126 dev_dbg(&hid->dev, "Mayflash HID hardware probe...\n"); 127 128 /* Split device into four inputs */ 129 hid->quirks |= HID_QUIRK_MULTI_INPUT; 130 131 error = hid_parse(hid); 132 if (error) { 133 hid_err(hid, "HID parse failed.\n"); 134 return error; 135 } 136 137 error = hid_hw_start(hid, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); 138 if (error) { 139 hid_err(hid, "HID hw start failed\n"); 140 return error; 141 } 142 143 error = mf_init(hid); 144 if (error) { 145 hid_err(hid, "Force feedback init failed.\n"); 146 hid_hw_stop(hid); 147 return error; 148 } 149 150 return 0; 151 } 152 153 static const struct hid_device_id mf_devices[] = { 154 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_PS3), }, 155 { } 156 }; 157 MODULE_DEVICE_TABLE(hid, mf_devices); 158 159 static struct hid_driver mf_driver = { 160 .name = "hid_mf", 161 .id_table = mf_devices, 162 .probe = mf_probe, 163 }; 164 module_hid_driver(mf_driver); 165 166 MODULE_LICENSE("GPL"); 167