From ALSA-Configuration.txt (for alsa 1.0.16):

	Conexant 5045
	  laptop-hpsense    Laptop with HP sense (old model laptop)
	  laptop-micsense   Laptop with Mic sense (old model fujitsu)
	  laptop-hpmicsense Laptop with HP and Mic senses
	  benq		Benq R55E
	  test		for testing/debugging purpose, almost all controls
			can be adjusted.  Appearing only when compiled with
			$CONFIG_SND_DEBUG=y