HID:hid-lg4ff: ensure ConstantForce is disabled when set to 0 (56930e7a) · Commits · e / devices / android_kernel_oneplus_sm8150

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>

drivers/hid/hid-lg4ff.c

+15 −0

Original line number	Diff line number	Diff line
		@@ -196,6 +196,21 @@ static int hid_lg4ff_play(struct input_dev dev, void data, struct ff_effect *e
		case FF_CONSTANT:
		x = effect->u.ramp.start_level + 0x80; /* 0x80 is no force */
		CLAMP(x);

		if (x == 0x80) {
		/* De-activate force in slot-1*/
		value[0] = 0x13;
		value[1] = 0x00;
		value[2] = 0x00;
		value[3] = 0x00;
		value[4] = 0x00;
		value[5] = 0x00;
		value[6] = 0x00;

		hid_hw_request(hid, report, HID_REQ_SET_REPORT);
		return 0;
		}

		value[0] = 0x11; /* Slot 1 */
		value[1] = 0x08;
		value[2] = x;