see : AmiloA's laptop M5451 sound card

lshal | grep alsa

udi = '/org/freedesktop/Hal/devices/computer_alsa_timer'
info.udi = '/org/freedesktop/Hal/devices/computer_alsa_timer'  (string)
alsa.device_file = '/dev/snd/timer'  (string)
alsa.type = 'timer'  (string)
info.capabilities = {'alsa'} (string list)
info.category = 'alsa'  (string)

udi = '/org/freedesktop/Hal/devices/computer_alsa_sequencer'
info.udi = '/org/freedesktop/Hal/devices/computer_alsa_sequencer'  (string)
alsa.device_file = '/dev/snd/seq'  (string)
alsa.type = 'sequencer'  (string)
info.capabilities = {'alsa'} (string list)
info.category = 'alsa'  (string)

see TI Chipset :

lshal | grep alsa 

udi = '/org/freedesktop/Hal/devices/usb_device_8bb_2904_noserial_if0_alsa_control__1'
info.udi = '/org/freedesktop/Hal/devices/usb_device_8bb_2904_noserial_if0_alsa_control__1'  (string)
alsa.card_id = 'default'  (string)
alsa.type = 'control'  (string)
alsa.card = 1  (0x1)  (int)
alsa.physical_device = '/org/freedesktop/Hal/devices/usb_device_8bb_2904_noserial_if0'  (string)
alsa.device_file = '/dev/snd/controlC1'  (string)
info.capabilities = {'alsa'} (string list)
info.category = 'alsa'  (string)

udi = '/org/freedesktop/Hal/devices/usb_device_8bb_2904_noserial_if0_alsa_capture_0'
info.udi = '/org/freedesktop/Hal/devices/usb_device_8bb_2904_noserial_if0_alsa_capture_0'  (string)
alsa.type = 'capture'  (string)
alsa.device_id = 'USB Audio'  (string)
alsa.pcm_class = 'generic'  (string)
alsa.card_id = 'default'  (string)
alsa.device = 0  (0x0)  (int)
alsa.card = 1  (0x1)  (int)
alsa.physical_device = '/org/freedesktop/Hal/devices/usb_device_8bb_2904_noserial_if0'  (string)
alsa.device_file = '/dev/snd/pcmC1D0c'  (string)
info.capabilities = {'alsa'} (string list)
info.category = 'alsa'  (string)

udi = '/org/freedesktop/Hal/devices/usb_device_8bb_2904_noserial_if0_alsa_playback_0'
info.udi = '/org/freedesktop/Hal/devices/usb_device_8bb_2904_noserial_if0_alsa_playback_0'  (string)
alsa.type = 'playback'  (string)
alsa.device_id = 'USB Audio'  (string)
alsa.pcm_class = 'generic'  (string)
alsa.card_id = 'default'  (string)
alsa.device = 0  (0x0)  (int)
alsa.card = 1  (0x1)  (int)
alsa.physical_device = '/org/freedesktop/Hal/devices/usb_device_8bb_2904_noserial_if0'  (string)
alsa.device_file = '/dev/snd/pcmC1D0p'  (string)
info.capabilities = {'alsa'} (string list)
info.category = 'alsa'  (string)