From: Pavel Rojtberg <[email protected]> When we initialize the driver/device, we really don't know how many controllers are connected. So send a "query presence" command to the base-station. (Command discovered by Zachary Lund)
presence packet taken from: https://github.com/computerquip/xpad5 Signed-off-by: Pavel Rojtberg <[email protected]> --- drivers/input/joystick/xpad.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c index 43490ea..7d66d77 100644 --- a/drivers/input/joystick/xpad.c +++ b/drivers/input/joystick/xpad.c @@ -1236,6 +1236,30 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id usb_kill_urb(xpad->irq_in); goto fail4; } + + /* + * send presence packet + * This will force the controller to resend connection packets. + * This is useful in the case we activate the module after the + * adapter has been plugged in, as it won't automatically + * send us info about the controllers. + */ + mutex_lock(&xpad->odata_mutex); + xpad->odata[0] = 0x08; + xpad->odata[1] = 0x00; + xpad->odata[2] = 0x0F; + xpad->odata[3] = 0xC0; + xpad->odata[4] = 0x00; + xpad->odata[5] = 0x00; + xpad->odata[6] = 0x00; + xpad->odata[7] = 0x00; + xpad->odata[8] = 0x00; + xpad->odata[9] = 0x00; + xpad->odata[10] = 0x00; + xpad->odata[11] = 0x00; + xpad->irq_out->transfer_buffer_length = 12; + usb_submit_urb(xpad->irq_out, GFP_KERNEL); + mutex_unlock(&xpad->odata_mutex); } xpad->pad_present = 1; error = xpad_init_input(xpad); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
