HID:hid-lg4ff: ensure ConstantForce is disabled when set to 0
When 'Constant Force' is set to 0 it is not turned off completely, the wheel feels 'heavy'. This patch issues the '13 00..' command to ensure that the force in slot 1 (the Constant Force) is deactivated. Reported-by: Elias Vanderstuyft <elias.vds@gmail.com> Signed-off-by: Simon Wood <simon@mungewell.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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@ -196,6 +196,21 @@ static int hid_lg4ff_play(struct input_dev *dev, void *data, struct ff_effect *e
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case FF_CONSTANT:
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x = effect->u.ramp.start_level + 0x80; /* 0x80 is no force */
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CLAMP(x);
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if (x == 0x80) {
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/* De-activate force in slot-1*/
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value[0] = 0x13;
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value[1] = 0x00;
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value[2] = 0x00;
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value[3] = 0x00;
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value[4] = 0x00;
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value[5] = 0x00;
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value[6] = 0x00;
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hid_hw_request(hid, report, HID_REQ_SET_REPORT);
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return 0;
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}
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value[0] = 0x11; /* Slot 1 */
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value[1] = 0x08;
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value[2] = x;
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