4df0968f852e6d7686a6f731b94cef775cd41fb0
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, 0xca03, ff_joystick
},
56 { 0x0000, 0x0000, ff_joystick
}
59 static int hid_lgff_play(struct input_dev
*dev
, void *data
, struct ff_effect
*effect
)
61 struct hid_device
*hid
= dev
->private;
62 struct list_head
*report_list
= &hid
->report_enum
[HID_OUTPUT_REPORT
].report_list
;
63 struct hid_report
*report
= list_entry(report_list
->next
, struct hid_report
, list
);
65 unsigned int left
, right
;
67 #define CLAMP(x) if (x < 0) x = 0; if (x > 0xff) x = 0xff
69 switch (effect
->type
) {
71 x
= effect
->u
.ramp
.start_level
+ 0x7f; /* 0x7f is center */
72 y
= effect
->u
.ramp
.end_level
+ 0x7f;
75 report
->field
[0]->value
[0] = 0x51;
76 report
->field
[0]->value
[1] = 0x08;
77 report
->field
[0]->value
[2] = x
;
78 report
->field
[0]->value
[3] = y
;
79 dbg("(x, y)=(%04x, %04x)", x
, y
);
80 usbhid_submit_report(hid
, report
, USB_DIR_OUT
);
84 right
= effect
->u
.rumble
.strong_magnitude
;
85 left
= effect
->u
.rumble
.weak_magnitude
;
86 right
= right
* 0xff / 0xffff;
87 left
= left
* 0xff / 0xffff;
90 report
->field
[0]->value
[0] = 0x42;
91 report
->field
[0]->value
[1] = 0x00;
92 report
->field
[0]->value
[2] = left
;
93 report
->field
[0]->value
[3] = right
;
94 dbg("(left, right)=(%04x, %04x)", left
, right
);
95 usbhid_submit_report(hid
, report
, USB_DIR_OUT
);
101 int hid_lgff_init(struct hid_device
* hid
)
103 struct hid_input
*hidinput
= list_entry(hid
->inputs
.next
, struct hid_input
, list
);
104 struct list_head
*report_list
= &hid
->report_enum
[HID_OUTPUT_REPORT
].report_list
;
105 struct input_dev
*dev
= hidinput
->input
;
106 struct hid_report
*report
;
107 struct hid_field
*field
;
111 /* Find the report to use */
112 if (list_empty(report_list
)) {
113 err("No output report found");
117 /* Check that the report looks ok */
118 report
= list_entry(report_list
->next
, struct hid_report
, list
);
120 err("NULL output report");
124 field
= report
->field
[0];
130 for (i
= 0; i
< ARRAY_SIZE(devices
); i
++) {
131 if (dev
->id
.vendor
== devices
[i
].idVendor
&&
132 dev
->id
.product
== devices
[i
].idProduct
) {
133 for (j
= 0; devices
[i
].ff
[j
] >= 0; j
++)
134 set_bit(devices
[i
].ff
[j
], dev
->ffbit
);
139 error
= input_ff_create_memless(dev
, NULL
, hid_lgff_play
);
143 printk(KERN_INFO
"Force feedback for Logitech force feedback devices by Johann Deneux <johann.deneux@it.uu.se>\n");
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