157 lines
4.0 KiB
C
157 lines
4.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Force feedback support for hid-compliant for some of the devices from
|
|
* Logitech, namely:
|
|
* - WingMan Cordless RumblePad
|
|
* - WingMan Force 3D
|
|
*
|
|
* Copyright (c) 2002-2004 Johann Deneux
|
|
* Copyright (c) 2006 Anssi Hannula <anssi.hannula@gmail.com>
|
|
*/
|
|
|
|
/*
|
|
*
|
|
* Should you need to contact me, the author, you can do so by
|
|
* e-mail - mail your message to <johann.deneux@it.uu.se>
|
|
*/
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#include <linux/input.h>
|
|
#include <linux/hid.h>
|
|
|
|
#include "hid-lg.h"
|
|
|
|
struct dev_type {
|
|
u16 idVendor;
|
|
u16 idProduct;
|
|
const signed short *ff;
|
|
};
|
|
|
|
static const signed short ff_rumble[] = {
|
|
FF_RUMBLE,
|
|
-1
|
|
};
|
|
|
|
static const signed short ff_joystick[] = {
|
|
FF_CONSTANT,
|
|
-1
|
|
};
|
|
|
|
static const signed short ff_joystick_ac[] = {
|
|
FF_CONSTANT,
|
|
FF_AUTOCENTER,
|
|
-1
|
|
};
|
|
|
|
static const struct dev_type devices[] = {
|
|
{ 0x046d, 0xc211, ff_rumble },
|
|
{ 0x046d, 0xc219, ff_rumble },
|
|
{ 0x046d, 0xc283, ff_joystick },
|
|
{ 0x046d, 0xc286, ff_joystick_ac },
|
|
{ 0x046d, 0xc287, ff_joystick_ac },
|
|
{ 0x046d, 0xc293, ff_joystick },
|
|
{ 0x046d, 0xc295, ff_joystick },
|
|
};
|
|
|
|
static int hid_lgff_play(struct input_dev *dev, void *data, struct ff_effect *effect)
|
|
{
|
|
struct hid_device *hid = input_get_drvdata(dev);
|
|
struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
|
|
struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
|
|
int x, y;
|
|
unsigned int left, right;
|
|
|
|
#define CLAMP(x) if (x < 0) x = 0; if (x > 0xff) x = 0xff
|
|
|
|
switch (effect->type) {
|
|
case FF_CONSTANT:
|
|
x = effect->u.ramp.start_level + 0x7f; /* 0x7f is center */
|
|
y = effect->u.ramp.end_level + 0x7f;
|
|
CLAMP(x);
|
|
CLAMP(y);
|
|
report->field[0]->value[0] = 0x51;
|
|
report->field[0]->value[1] = 0x08;
|
|
report->field[0]->value[2] = x;
|
|
report->field[0]->value[3] = y;
|
|
dbg_hid("(x, y)=(%04x, %04x)\n", x, y);
|
|
hid_hw_request(hid, report, HID_REQ_SET_REPORT);
|
|
break;
|
|
|
|
case FF_RUMBLE:
|
|
right = effect->u.rumble.strong_magnitude;
|
|
left = effect->u.rumble.weak_magnitude;
|
|
right = right * 0xff / 0xffff;
|
|
left = left * 0xff / 0xffff;
|
|
CLAMP(left);
|
|
CLAMP(right);
|
|
report->field[0]->value[0] = 0x42;
|
|
report->field[0]->value[1] = 0x00;
|
|
report->field[0]->value[2] = left;
|
|
report->field[0]->value[3] = right;
|
|
dbg_hid("(left, right)=(%04x, %04x)\n", left, right);
|
|
hid_hw_request(hid, report, HID_REQ_SET_REPORT);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void hid_lgff_set_autocenter(struct input_dev *dev, u16 magnitude)
|
|
{
|
|
struct hid_device *hid = input_get_drvdata(dev);
|
|
struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
|
|
struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
|
|
__s32 *value = report->field[0]->value;
|
|
magnitude = (magnitude >> 12) & 0xf;
|
|
*value++ = 0xfe;
|
|
*value++ = 0x0d;
|
|
*value++ = magnitude; /* clockwise strength */
|
|
*value++ = magnitude; /* counter-clockwise strength */
|
|
*value++ = 0x80;
|
|
*value++ = 0x00;
|
|
*value = 0x00;
|
|
hid_hw_request(hid, report, HID_REQ_SET_REPORT);
|
|
}
|
|
|
|
int lgff_init(struct hid_device* hid)
|
|
{
|
|
struct hid_input *hidinput;
|
|
struct input_dev *dev;
|
|
const signed short *ff_bits = ff_joystick;
|
|
int error;
|
|
int i;
|
|
|
|
if (list_empty(&hid->inputs)) {
|
|
hid_err(hid, "no inputs found\n");
|
|
return -ENODEV;
|
|
}
|
|
hidinput = list_entry(hid->inputs.next, struct hid_input, list);
|
|
dev = hidinput->input;
|
|
|
|
/* Check that the report looks ok */
|
|
if (!hid_validate_values(hid, HID_OUTPUT_REPORT, 0, 0, 7))
|
|
return -ENODEV;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(devices); i++) {
|
|
if (dev->id.vendor == devices[i].idVendor &&
|
|
dev->id.product == devices[i].idProduct) {
|
|
ff_bits = devices[i].ff;
|
|
break;
|
|
}
|
|
}
|
|
|
|
for (i = 0; ff_bits[i] >= 0; i++)
|
|
set_bit(ff_bits[i], dev->ffbit);
|
|
|
|
error = input_ff_create_memless(dev, NULL, hid_lgff_play);
|
|
if (error)
|
|
return error;
|
|
|
|
if ( test_bit(FF_AUTOCENTER, dev->ffbit) )
|
|
dev->ff->set_autocenter = hid_lgff_set_autocenter;
|
|
|
|
pr_info("Force feedback for Logitech force feedback devices by Johann Deneux <johann.deneux@it.uu.se>\n");
|
|
|
|
return 0;
|
|
}
|