2 * Force feedback support for hid-compliant for some of the devices from
4 * - WingMan Cordless RumblePad
7 * Copyright (c) 2002-2004 Johann Deneux
8 * Copyright (c) 2006 Anssi Hannula <anssi.hannula@gmail.com>
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 * Should you need to contact me, the author, you can do so by
27 * e-mail - mail your message to <johann.deneux@it.uu.se>
30 #include <linux/input.h>
31 #include <linux/usb.h>
32 #include <linux/hid.h>
38 const signed short *ff
;
41 static const signed short ff_rumble
[] = {
46 static const signed short ff_joystick
[] = {
51 static const struct dev_type devices
[] = {
52 { 0x046d, 0xc211, ff_rumble
},
53 { 0x046d, 0xc219, ff_rumble
},
54 { 0x046d, 0xc283, ff_joystick
},
55 { 0x046d, 0xc294, ff_joystick
},
56 { 0x046d, 0xc295, ff_joystick
},
57 { 0x046d, 0xca03, ff_joystick
},
60 static int hid_lgff_play(struct input_dev
*dev
, void *data
, struct ff_effect
*effect
)
62 struct hid_device
*hid
= dev
->private;
63 struct list_head
*report_list
= &hid
->report_enum
[HID_OUTPUT_REPORT
].report_list
;
64 struct hid_report
*report
= list_entry(report_list
->next
, struct hid_report
, list
);
66 unsigned int left
, right
;
68 #define CLAMP(x) if (x < 0) x = 0; if (x > 0xff) x = 0xff
70 switch (effect
->type
) {
72 x
= effect
->u
.ramp
.start_level
+ 0x7f; /* 0x7f is center */
73 y
= effect
->u
.ramp
.end_level
+ 0x7f;
76 report
->field
[0]->value
[0] = 0x51;
77 report
->field
[0]->value
[1] = 0x08;
78 report
->field
[0]->value
[2] = x
;
79 report
->field
[0]->value
[3] = y
;
80 dbg("(x, y)=(%04x, %04x)", x
, y
);
81 usbhid_submit_report(hid
, report
, USB_DIR_OUT
);
85 right
= effect
->u
.rumble
.strong_magnitude
;
86 left
= effect
->u
.rumble
.weak_magnitude
;
87 right
= right
* 0xff / 0xffff;
88 left
= left
* 0xff / 0xffff;
91 report
->field
[0]->value
[0] = 0x42;
92 report
->field
[0]->value
[1] = 0x00;
93 report
->field
[0]->value
[2] = left
;
94 report
->field
[0]->value
[3] = right
;
95 dbg("(left, right)=(%04x, %04x)", left
, right
);
96 usbhid_submit_report(hid
, report
, USB_DIR_OUT
);
102 int hid_lgff_init(struct hid_device
* hid
)
104 struct hid_input
*hidinput
= list_entry(hid
->inputs
.next
, struct hid_input
, list
);
105 struct list_head
*report_list
= &hid
->report_enum
[HID_OUTPUT_REPORT
].report_list
;
106 struct input_dev
*dev
= hidinput
->input
;
107 struct hid_report
*report
;
108 struct hid_field
*field
;
109 const signed short *ff_bits
= ff_joystick
;
113 /* Find the report to use */
114 if (list_empty(report_list
)) {
115 err("No output report found");
119 /* Check that the report looks ok */
120 report
= list_entry(report_list
->next
, struct hid_report
, list
);
122 err("NULL output report");
126 field
= report
->field
[0];
132 for (i
= 0; i
< ARRAY_SIZE(devices
); i
++) {
133 if (dev
->id
.vendor
== devices
[i
].idVendor
&&
134 dev
->id
.product
== devices
[i
].idProduct
) {
135 ff_bits
= devices
[i
].ff
;
140 for (i
= 0; ff_bits
[i
] >= 0; i
++)
141 set_bit(ff_bits
[i
], dev
->ffbit
);
143 error
= input_ff_create_memless(dev
, NULL
, hid_lgff_play
);
147 printk(KERN_INFO
"Force feedback for Logitech force feedback devices by Johann Deneux <johann.deneux@it.uu.se>\n");