Here's the names from within the second bank of pmem:
dm -  - 0
vip - CONTROL_PARAM_VIP_SOURCE - 1
spdif1 - CONTROL_PARAM_SPDIF1_SOURCE - 2
mch -  - 3
gaout -  - 4
gaint -  - 5
gdout -  - 6
gdint -  - 7
ga16 - CONTROL_PARAM_PORTD_160OHM_GAIN - 8
ga10k -  - 9
gd16 - CONTROL_PARAM_PORTD_16OHM_GAIN - 10
gd10k -  - 11
dualhp -  - 12
dac2port -  - 13
mpce0 -  - 14
mpce1 -  - 15
mpce2 -  - 16
mpce3 -  - 17
mpce4 -  - 18
mpce5 -  - 19
mpce6 -  - 20
mpce7 -  - 21
pice -  - 22
asi -  - 23
sid - CONTROL_PARAM_STREAM_ID - 24
scp - CONTROL_PARAM_STREAM_SOURCE_CONN_POINT - 25
dcp - CONTROL_PARAM_STREAM_DEST_CONN_POINT - 26
sch - CONTROL_PARAM_STREAMS_CHANNELS - 27
sctl - CONTROL_PARAM_STREAM_CONTROL - 28
cpid - CONTROL_PARAM_CONN_POINT_ID - 29
cpsr - CONTROL_PARAM_CONN_POINT_SAMPLE_RATE - 30
nid - CONTROL_PARAM_NODE_ID - 31 - supposedly selects hda node with given ID
n2sid -  - 32 - Guessing this might attach a stream?
pi1d -  - 33
pi2d -  - 34
eapd -  - 35