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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 | /* * Force feedback support for Logitech RumblePad and Rumblepad 2 * * Copyright (c) 2008 Anssi Hannula <anssi.hannula@gmail.com> */ /* * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/input.h> #include <linux/slab.h> #include <linux/usb.h> #include <linux/hid.h> #include "usbhid/usbhid.h" #include "hid-lg.h" struct lg2ff_device { struct hid_report *report; }; static int play_effect(struct input_dev *dev, void *data, struct ff_effect *effect) { struct hid_device *hid = input_get_drvdata(dev); struct lg2ff_device *lg2ff = data; int weak, strong; strong = effect->u.rumble.strong_magnitude; weak = effect->u.rumble.weak_magnitude; if (weak || strong) { weak = weak * 0xff / 0xffff; strong = strong * 0xff / 0xffff; lg2ff->report->field[0]->value[0] = 0x51; lg2ff->report->field[0]->value[2] = weak; lg2ff->report->field[0]->value[4] = strong; } else { lg2ff->report->field[0]->value[0] = 0xf3; lg2ff->report->field[0]->value[2] = 0x00; lg2ff->report->field[0]->value[4] = 0x00; } usbhid_submit_report(hid, lg2ff->report, USB_DIR_OUT); return 0; } int lg2ff_init(struct hid_device *hid) { struct lg2ff_device *lg2ff; struct hid_report *report; struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); struct input_dev *dev = hidinput->input; int error; /* Check that the report looks ok */ report = hid_validate_values(hid, HID_OUTPUT_REPORT, 0, 0, 7); if (!report) return -ENODEV; lg2ff = kmalloc(sizeof(struct lg2ff_device), GFP_KERNEL); if (!lg2ff) return -ENOMEM; set_bit(FF_RUMBLE, dev->ffbit); error = input_ff_create_memless(dev, lg2ff, play_effect); if (error) { kfree(lg2ff); return error; } lg2ff->report = report; report->field[0]->value[0] = 0xf3; report->field[0]->value[1] = 0x00; report->field[0]->value[2] = 0x00; report->field[0]->value[3] = 0x00; report->field[0]->value[4] = 0x00; report->field[0]->value[5] = 0x00; report->field[0]->value[6] = 0x00; usbhid_submit_report(hid, report, USB_DIR_OUT); hid_info(hid, "Force feedback for Logitech RumblePad/Rumblepad 2 by Anssi Hannula <anssi.hannula@gmail.com>\n"); return 0; } |