Jiri Kosina пишет:
> On Mon, 18 Aug 2008, Sergey Belyashov wrote:
>
>> =========================================================================
>> Logitech MOMO Recing Wheel Force Feedback autocenter setting support
>> (also may be work on G25 etc. but I cann't check):
>
> Hi Sergey,
>
> sorry for late reply, I have been on vacation.
>
> Could you please send the patch with proper Signed-off-by: line, as
> documented in Documentation/SubmittingPatches, so that I can merge it
> properly?
>
> Thanks!
>
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%). I write patch for my current kernel (2.6.25), but I think git
version also supported, because I do not found any changes in it.
========================================================================================
--- drivers/hid/usbhid/hid-lgff.c 2008-04-17 06:49:44.000000000 +0400
+++ drivers/hid/usbhid/hid-lgff.c 2008-08-19 20:57:00.000000000 +0400
@@ -48,6 +48,12 @@ 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 },
@@ -55,7 +61,7 @@ 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)
@@ -100,6 +106,23 @@ static int hid_lgff_play(struct input_de
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 hid_lgff_init(struct hid_device* hid)
{
struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
@@ -145,6 +168,9 @@ int hid_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@xxxxxxxx>\n");
return 0;
========================================================================================
Signed-off-by: Sergey Belyashov <Sergey.Belyashov@xxxxxxxxx>
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