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HID: Autocentering support for Logitech MOMO Racing Wheel

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Current kernel has no support for autocentering for Logitech wheels.  By
default autocentering enabled in wheel and constant effect does not work
properly. Using USB sniffer I found command which change autocentering
settings: 0xFE, 0x0D, 0x0R, 0x0L, 0x80, 0x00, 0x00, where R - clockwise force,
L - counter-clockwise (0x0-0xF, 0xC = 100%).

Signed-off-by: Sergey Belyashov <Sergey.Belyashov@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Sergey Belyashov 2008-09-02 17:31:16 +02:00 committed by Jiri Kosina
parent 6f3c0e5096
commit 2bea94db87
1 changed files with 27 additions and 1 deletions
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28
drivers/hid/hid-lgff.c
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@ -50,6 +50,12 @@ static const signed short ff_joystick[] = {
-1
};
static const signed short ff_wheel[] = {
FF_CONSTANT,
FF_AUTOCENTER,
-1
};
static const struct dev_type devices[] = {
{ 0x046d, 0xc211, ff_rumble },
{ 0x046d, 0xc219, ff_rumble },
@ -57,7 +63,7 @@ static const struct dev_type devices[] = {
{ 0x046d, 0xc286, ff_joystick },
{ 0x046d, 0xc294, ff_joystick },
{ 0x046d, 0xc295, ff_joystick },
{ 0x046d, 0xca03, ff_joystick },
{ 0x046d, 0xca03, ff_wheel },
};
static int hid_lgff_play(struct input_dev *dev, void *data, struct ff_effect *effect)
@ -102,6 +108,23 @@ static int hid_lgff_play(struct input_dev *dev, void *data, struct ff_effect *ef
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;
usbhid_submit_report(hid, report, USB_DIR_OUT);
}
int lgff_init(struct hid_device* hid)
{
struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
@ -147,6 +170,9 @@ int lgff_init(struct hid_device* hid)
if (error)
return error;
if ( test_bit(FF_AUTOCENTER, dev->ffbit) )
dev->ff->set_autocenter = hid_lgff_set_autocenter;
printk(KERN_INFO "Force feedback for Logitech force feedback devices by Johann Deneux <johann.deneux@it.uu.se>\n");
return 0;