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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
32 #include <linux/input.h>
33 #include <linux/usb.h>
34 #include <linux/hid.h>
36 #include "usbhid/usbhid.h"
42 const signed short *ff
;
45 static const signed short ff_rumble
[] = {
50 static const signed short ff_joystick
[] = {
55 static const signed short ff_joystick_ac
[] = {
61 static const signed short ff_wheel
[] = {
67 static const struct dev_type devices
[] = {
68 { 0x046d, 0xc211, ff_rumble
},
69 { 0x046d, 0xc219, ff_rumble
},
70 { 0x046d, 0xc283, ff_joystick
},
71 { 0x046d, 0xc286, ff_joystick_ac
},
72 { 0x046d, 0xc287, ff_joystick_ac
},
73 { 0x046d, 0xc293, ff_joystick
},
74 { 0x046d, 0xc294, ff_wheel
},
75 { 0x046d, 0xc295, ff_joystick
},
76 { 0x046d, 0xca03, ff_wheel
},
79 static int hid_lgff_play(struct input_dev
*dev
, void *data
, struct ff_effect
*effect
)
81 struct hid_device
*hid
= input_get_drvdata(dev
);
82 struct list_head
*report_list
= &hid
->report_enum
[HID_OUTPUT_REPORT
].report_list
;
83 struct hid_report
*report
= list_entry(report_list
->next
, struct hid_report
, list
);
85 unsigned int left
, right
;
87 #define CLAMP(x) if (x < 0) x = 0; if (x > 0xff) x = 0xff
89 switch (effect
->type
) {
91 x
= effect
->u
.ramp
.start_level
+ 0x7f; /* 0x7f is center */
92 y
= effect
->u
.ramp
.end_level
+ 0x7f;
95 report
->field
[0]->value
[0] = 0x51;
96 report
->field
[0]->value
[1] = 0x08;
97 report
->field
[0]->value
[2] = x
;
98 report
->field
[0]->value
[3] = y
;
99 dbg_hid("(x, y)=(%04x, %04x)\n", x
, y
);
100 usbhid_submit_report(hid
, report
, USB_DIR_OUT
);
104 right
= effect
->u
.rumble
.strong_magnitude
;
105 left
= effect
->u
.rumble
.weak_magnitude
;
106 right
= right
* 0xff / 0xffff;
107 left
= left
* 0xff / 0xffff;
110 report
->field
[0]->value
[0] = 0x42;
111 report
->field
[0]->value
[1] = 0x00;
112 report
->field
[0]->value
[2] = left
;
113 report
->field
[0]->value
[3] = right
;
114 dbg_hid("(left, right)=(%04x, %04x)\n", left
, right
);
115 usbhid_submit_report(hid
, report
, USB_DIR_OUT
);
121 static void hid_lgff_set_autocenter(struct input_dev
*dev
, u16 magnitude
)
123 struct hid_device
*hid
= input_get_drvdata(dev
);
124 struct list_head
*report_list
= &hid
->report_enum
[HID_OUTPUT_REPORT
].report_list
;
125 struct hid_report
*report
= list_entry(report_list
->next
, struct hid_report
, list
);
126 __s32
*value
= report
->field
[0]->value
;
127 magnitude
= (magnitude
>> 12) & 0xf;
130 *value
++ = magnitude
; /* clockwise strength */
131 *value
++ = magnitude
; /* counter-clockwise strength */
135 usbhid_submit_report(hid
, report
, USB_DIR_OUT
);
138 int lgff_init(struct hid_device
* hid
)
140 struct hid_input
*hidinput
= list_entry(hid
->inputs
.next
, struct hid_input
, list
);
141 struct list_head
*report_list
= &hid
->report_enum
[HID_OUTPUT_REPORT
].report_list
;
142 struct input_dev
*dev
= hidinput
->input
;
143 struct hid_report
*report
;
144 struct hid_field
*field
;
145 const signed short *ff_bits
= ff_joystick
;
149 /* Find the report to use */
150 if (list_empty(report_list
)) {
151 hid_err(hid
, "No output report found\n");
155 /* Check that the report looks ok */
156 report
= list_entry(report_list
->next
, struct hid_report
, list
);
157 field
= report
->field
[0];
159 hid_err(hid
, "NULL field\n");
163 for (i
= 0; i
< ARRAY_SIZE(devices
); i
++) {
164 if (dev
->id
.vendor
== devices
[i
].idVendor
&&
165 dev
->id
.product
== devices
[i
].idProduct
) {
166 ff_bits
= devices
[i
].ff
;
171 for (i
= 0; ff_bits
[i
] >= 0; i
++)
172 set_bit(ff_bits
[i
], dev
->ffbit
);
174 error
= input_ff_create_memless(dev
, NULL
, hid_lgff_play
);
178 if ( test_bit(FF_AUTOCENTER
, dev
->ffbit
) )
179 dev
->ff
->set_autocenter
= hid_lgff_set_autocenter
;
181 pr_info("Force feedback for Logitech force feedback devices by Johann Deneux <johann.deneux@it.uu.se>\n");
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