projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| c17f9c90 | 1 | /* |
| 2c6118e4 | 2 | * Force feedback support for Logitech RumblePad and Rumblepad 2 |
| c17f9c90 AH |
3 | * |
| 4 | * Copyright (c) 2008 Anssi Hannula <[email protected]> | |
| 5 | */ | |
| 6 | ||
| 7 | /* | |
| 8 | * This program is free software; you can redistribute it and/or modify | |
| 9 | * it under the terms of the GNU General Public License as published by | |
| 10 | * the Free Software Foundation; either version 2 of the License, or | |
| 11 | * (at your option) any later version. | |
| 12 | * | |
| 13 | * This program is distributed in the hope that it will be useful, | |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 | * GNU General Public License for more details. | |
| 17 | * | |
| 18 | * You should have received a copy of the GNU General Public License | |
| 19 | * along with this program; if not, write to the Free Software | |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 21 | */ | |
| 22 | ||
| 23 | ||
| 24 | #include <linux/input.h> | |
| 5a0e3ad6 | 25 | #include <linux/slab.h> |
| c17f9c90 | 26 | #include <linux/hid.h> |
| 606bd0a8 | 27 | |
| 606bd0a8 | 28 | #include "hid-lg.h" |
| c17f9c90 AH |
29 | |
| 30 | struct lg2ff_device { | |
| 31 | struct hid_report *report; | |
| 32 | }; | |
| 33 | ||
| 34 | static int play_effect(struct input_dev *dev, void *data, | |
| 35 | struct ff_effect *effect) | |
| 36 | { | |
| 37 | struct hid_device *hid = input_get_drvdata(dev); | |
| 38 | struct lg2ff_device *lg2ff = data; | |
| 39 | int weak, strong; | |
| 40 | ||
| 41 | strong = effect->u.rumble.strong_magnitude; | |
| 42 | weak = effect->u.rumble.weak_magnitude; | |
| 43 | ||
| 44 | if (weak || strong) { | |
| 45 | weak = weak * 0xff / 0xffff; | |
| 46 | strong = strong * 0xff / 0xffff; | |
| 47 | ||
| 48 | lg2ff->report->field[0]->value[0] = 0x51; | |
| 49 | lg2ff->report->field[0]->value[2] = weak; | |
| 50 | lg2ff->report->field[0]->value[4] = strong; | |
| 51 | } else { | |
| 52 | lg2ff->report->field[0]->value[0] = 0xf3; | |
| 53 | lg2ff->report->field[0]->value[2] = 0x00; | |
| 54 | lg2ff->report->field[0]->value[4] = 0x00; | |
| 55 | } | |
| 56 | ||
| d8814272 | 57 | hid_hw_request(hid, lg2ff->report, HID_REQ_SET_REPORT); |
| c17f9c90 AH |
58 | return 0; |
| 59 | } | |
| 60 | ||
| 606bd0a8 | 61 | int lg2ff_init(struct hid_device *hid) |
| c17f9c90 AH |
62 | { |
| 63 | struct lg2ff_device *lg2ff; | |
| 64 | struct hid_report *report; | |
| 65 | struct hid_input *hidinput = list_entry(hid->inputs.next, | |
| 66 | struct hid_input, list); | |
| c17f9c90 AH |
67 | struct input_dev *dev = hidinput->input; |
| 68 | int error; | |
| 69 | ||
| 0fb6bd06 KC |
70 | /* Check that the report looks ok */ |
| 71 | report = hid_validate_values(hid, HID_OUTPUT_REPORT, 0, 0, 7); | |
| 72 | if (!report) | |
| c17f9c90 | 73 | return -ENODEV; |
| c17f9c90 AH |
74 | |
| 75 | lg2ff = kmalloc(sizeof(struct lg2ff_device), GFP_KERNEL); | |
| 76 | if (!lg2ff) | |
| 77 | return -ENOMEM; | |
| 78 | ||
| 79 | set_bit(FF_RUMBLE, dev->ffbit); | |
| 80 | ||
| 81 | error = input_ff_create_memless(dev, lg2ff, play_effect); | |
| 82 | if (error) { | |
| 83 | kfree(lg2ff); | |
| 84 | return error; | |
| 85 | } | |
| 86 | ||
| 87 | lg2ff->report = report; | |
| 88 | report->field[0]->value[0] = 0xf3; | |
| 89 | report->field[0]->value[1] = 0x00; | |
| 90 | report->field[0]->value[2] = 0x00; | |
| 91 | report->field[0]->value[3] = 0x00; | |
| 92 | report->field[0]->value[4] = 0x00; | |
| 93 | report->field[0]->value[5] = 0x00; | |
| 94 | report->field[0]->value[6] = 0x00; | |
| 95 | ||
| d8814272 | 96 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); |
| c17f9c90 | 97 | |
| bd04363d | 98 | hid_info(hid, "Force feedback for Logitech variant 2 rumble devices by Anssi Hannula <[email protected]>\n"); |
| c17f9c90 AH |
99 | |
| 100 | return 0; | |
| 101 | } |