1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Force feedback support for Mayflash game controller adapters. 4 * 5 * These devices are manufactured by Mayflash but identify themselves 6 * using the vendor ID of DragonRise Inc. 7 * 8 * Tested with: 9 * 0079:1801 "DragonRise Inc. Mayflash PS3 Game Controller Adapter" 10 * 0079:1803 "DragonRise Inc. Mayflash Wireless Sensor DolphinBar" 11 * 0079:1843 "DragonRise Inc. Mayflash GameCube Game Controller Adapter" 12 * 0079:1844 "DragonRise Inc. Mayflash GameCube Game Controller Adapter (v04)" 13 * 14 * The following adapters probably work too, but need to be tested: 15 * 0079:1800 "DragonRise Inc. Mayflash WIIU Game Controller Adapter" 16 * 17 * Copyright (c) 2016-2017 Marcel Hasler <mahasler@gmail.com> 18 */ 19 20 /* 21 */ 22 23 #include <linux/input.h> 24 #include <linux/slab.h> 25 #include <linux/hid.h> 26 #include <linux/module.h> 27 28 #include "hid-ids.h" 29 30 struct mf_device { 31 struct hid_report *report; 32 }; 33 34 static int mf_play(struct input_dev *dev, void *data, struct ff_effect *effect) 35 { 36 struct hid_device *hid = input_get_drvdata(dev); 37 struct mf_device *mf = data; 38 int strong, weak; 39 40 strong = effect->u.rumble.strong_magnitude; 41 weak = effect->u.rumble.weak_magnitude; 42 43 dbg_hid("Called with 0x%04x 0x%04x.\n", strong, weak); 44 45 strong = strong * 0xff / 0xffff; 46 weak = weak * 0xff / 0xffff; 47 48 dbg_hid("Running with 0x%02x 0x%02x.\n", strong, weak); 49 50 mf->report->field[0]->value[0] = weak; 51 mf->report->field[0]->value[1] = strong; 52 hid_hw_request(hid, mf->report, HID_REQ_SET_REPORT); 53 54 return 0; 55 } 56 57 static int mf_init(struct hid_device *hid) 58 { 59 struct mf_device *mf; 60 61 struct list_head *report_list = 62 &hid->report_enum[HID_OUTPUT_REPORT].report_list; 63 64 struct list_head *report_ptr; 65 struct hid_report *report; 66 67 struct list_head *input_ptr = &hid->inputs; 68 struct hid_input *input; 69 70 struct input_dev *dev; 71 72 int error; 73 74 /* Setup each of the four inputs */ 75 list_for_each(report_ptr, report_list) { 76 report = list_entry(report_ptr, struct hid_report, list); 77 78 if (report->maxfield < 1 || report->field[0]->report_count < 2) { 79 hid_err(hid, "Invalid report, this should never happen!\n"); 80 return -ENODEV; 81 } 82 83 if (list_is_last(input_ptr, &hid->inputs)) { 84 hid_err(hid, "Missing input, this should never happen!\n"); 85 return -ENODEV; 86 } 87 88 input_ptr = input_ptr->next; 89 input = list_entry(input_ptr, struct hid_input, list); 90 91 mf = kzalloc(sizeof(struct mf_device), GFP_KERNEL); 92 if (!mf) 93 return -ENOMEM; 94 95 dev = input->input; 96 set_bit(FF_RUMBLE, dev->ffbit); 97 98 error = input_ff_create_memless(dev, mf, mf_play); 99 if (error) { 100 kfree(mf); 101 return error; 102 } 103 104 mf->report = report; 105 mf->report->field[0]->value[0] = 0x00; 106 mf->report->field[0]->value[1] = 0x00; 107 hid_hw_request(hid, mf->report, HID_REQ_SET_REPORT); 108 } 109 110 hid_info(hid, "Force feedback for HJZ Mayflash game controller " 111 "adapters by Marcel Hasler <mahasler@gmail.com>\n"); 112 113 return 0; 114 } 115 116 static int mf_probe(struct hid_device *hid, const struct hid_device_id *id) 117 { 118 int error; 119 120 dev_dbg(&hid->dev, "Mayflash HID hardware probe...\n"); 121 122 /* Apply quirks as needed */ 123 hid->quirks |= id->driver_data; 124 125 error = hid_parse(hid); 126 if (error) { 127 hid_err(hid, "HID parse failed.\n"); 128 return error; 129 } 130 131 error = hid_hw_start(hid, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); 132 if (error) { 133 hid_err(hid, "HID hw start failed\n"); 134 return error; 135 } 136 137 error = mf_init(hid); 138 if (error) { 139 hid_err(hid, "Force feedback init failed.\n"); 140 hid_hw_stop(hid); 141 return error; 142 } 143 144 return 0; 145 } 146 147 static const struct hid_device_id mf_devices[] = { 148 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_PS3), 149 .driver_data = HID_QUIRK_MULTI_INPUT }, 150 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_DOLPHINBAR), 151 .driver_data = HID_QUIRK_MULTI_INPUT }, 152 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_GAMECUBE1), 153 .driver_data = HID_QUIRK_MULTI_INPUT }, 154 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_GAMECUBE2), 155 .driver_data = 0 }, /* No quirk required */ 156 { } 157 }; 158 MODULE_DEVICE_TABLE(hid, mf_devices); 159 160 static struct hid_driver mf_driver = { 161 .name = "hid_mf", 162 .id_table = mf_devices, 163 .probe = mf_probe, 164 }; 165 module_hid_driver(mf_driver); 166 167 MODULE_LICENSE("GPL"); 168