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git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - drivers/hid/hid-lg2ff.c
2 * Force feedback support for Logitech RumblePad and Rumblepad 2
4 * Copyright (c) 2008 Anssi Hannula <anssi.hannula@gmail.com>
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.
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.
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
24 #include <linux/input.h>
25 #include <linux/slab.h>
26 #include <linux/hid.h>
31 struct hid_report
*report
;
34 static int play_effect(struct input_dev
*dev
, void *data
,
35 struct ff_effect
*effect
)
37 struct hid_device
*hid
= input_get_drvdata(dev
);
38 struct lg2ff_device
*lg2ff
= data
;
41 strong
= effect
->u
.rumble
.strong_magnitude
;
42 weak
= effect
->u
.rumble
.weak_magnitude
;
45 weak
= weak
* 0xff / 0xffff;
46 strong
= strong
* 0xff / 0xffff;
48 lg2ff
->report
->field
[0]->value
[0] = 0x51;
49 lg2ff
->report
->field
[0]->value
[2] = weak
;
50 lg2ff
->report
->field
[0]->value
[4] = strong
;
52 lg2ff
->report
->field
[0]->value
[0] = 0xf3;
53 lg2ff
->report
->field
[0]->value
[2] = 0x00;
54 lg2ff
->report
->field
[0]->value
[4] = 0x00;
57 hid_hw_request(hid
, lg2ff
->report
, HID_REQ_SET_REPORT
);
61 int lg2ff_init(struct hid_device
*hid
)
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
);
67 struct input_dev
*dev
= hidinput
->input
;
70 /* Check that the report looks ok */
71 report
= hid_validate_values(hid
, HID_OUTPUT_REPORT
, 0, 0, 7);
75 lg2ff
= kmalloc(sizeof(struct lg2ff_device
), GFP_KERNEL
);
79 set_bit(FF_RUMBLE
, dev
->ffbit
);
81 error
= input_ff_create_memless(dev
, lg2ff
, play_effect
);
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;
96 hid_hw_request(hid
, report
, HID_REQ_SET_REPORT
);
98 hid_info(hid
, "Force feedback for Logitech variant 2 rumble devices by Anssi Hannula <anssi.hannula@gmail.com>\n");