From 2a6d7527b35cf987260800807e328d167aef22ac Mon Sep 17 00:00:00 2001 From: "Pierre-Loup A. Griffais" Date: Wed, 9 Dec 2015 13:40:37 -0800 Subject: [PATCH] Input: xpad - update Xbox One Force Feedback Support There's apparently a serial number woven into both input and output packets; neglecting to specify a valid serial number causes the controller to ignore the rumble packets. The scale of the rumble was also apparently halved in the packets. The initialization packet had to be changed to allow force feedback to work. see https://github.com/paroj/xpad/issues/7 for details. Signed-off-by: Pavel Rojtberg Signed-off-by: Dmitry Torokhov --- drivers/input/joystick/xpad.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c index 285f0b753c25..aa6586043a6c 100644 --- a/drivers/input/joystick/xpad.c +++ b/drivers/input/joystick/xpad.c @@ -348,6 +348,7 @@ struct usb_xpad { struct urb *irq_out; /* urb for interrupt out report */ bool irq_out_active; /* we must not use an active URB */ unsigned char *odata; /* output data */ + u8 odata_serial; /* serial number for xbox one protocol */ dma_addr_t odata_dma; spinlock_t odata_lock; @@ -923,7 +924,10 @@ static int xpad_start_xbox_one(struct usb_xpad *xpad) /* Xbox one controller needs to be initialized. */ packet->data[0] = 0x05; packet->data[1] = 0x20; - packet->len = 2; + packet->data[2] = xpad->odata_serial++; /* packet serial */ + packet->data[3] = 0x01; /* rumble bit enable? */ + packet->data[4] = 0x00; + packet->len = 5; packet->pending = true; /* Reset the sequence so we send out start packet first */ @@ -998,17 +1002,18 @@ static int xpad_play_effect(struct input_dev *dev, void *data, struct ff_effect case XTYPE_XBOXONE: packet->data[0] = 0x09; /* activate rumble */ packet->data[1] = 0x08; - packet->data[2] = 0x00; + packet->data[2] = xpad->odata_serial++; packet->data[3] = 0x08; /* continuous effect */ packet->data[4] = 0x00; /* simple rumble mode */ packet->data[5] = 0x03; /* L and R actuator only */ packet->data[6] = 0x00; /* TODO: LT actuator */ packet->data[7] = 0x00; /* TODO: RT actuator */ - packet->data[8] = strong / 256; /* left actuator */ - packet->data[9] = weak / 256; /* right actuator */ + packet->data[8] = strong / 512; /* left actuator */ + packet->data[9] = weak / 512; /* right actuator */ packet->data[10] = 0x80; /* length of pulse */ packet->data[11] = 0x00; /* stop period of pulse */ - packet->len = 12; + packet->data[12] = 0x00; + packet->len = 13; packet->pending = true; break;