On Thu, May 02, 2013 at 09:46:44AM -0400, Todd Showalter wrote:

left stick: ABS_X, ABS_Y
right stick: ABS_RX, ABS_RY

Not sure about this one. Originally RX, RY and RZ were introduces for
device having more than 3 degress of freedom; and RX is used by many
joystick devices. We'd ether need a property bit to distinguish gamepad
from a joystick or simply ass ABS_X2, ABS_Y2 etc for the second stick.

dpad: ABS_HAT0X, ABS_HAT0Y
left trigger: ABS_Z

Huh?

right trigger: ABS_RZ

Not at all. These are not absolute events but rather buttons, so let's
define them as such.

start button: BTN_START
system button: BTN_SYSTEM
four face buttons: BTN_NORTH, BTN_EAST, BTN_SOUTH, BTN_WEST
two shoulder buttons: BTN_TL, BTN_TR
two stick click buttons: BTN_THUMBL, BTN_THUMBR

Thanks.

-- 
Dmitry