Pplib

The --pplib-cmd is an undocumented aticonfig command, appears to directly interface with firmware on card.

The full list of supported commands:

Get version of pplib:

# /usr/local/bin/aticonfig --pplib-cmd "get version" 
PPLIB version is 1.4 and is active

Get activity information:

# /usr/local/bin/aticonfig --pplib-cmd "get activity"
Current Activity is Core Clock: 915MHZ
Memory Clock: 1050MHZ
VDDC: 1175
Activity: 98 percent
Performance Level: 2
Bus Speed: 5000
Bus Lanes: 16
Maximum Bus Lanes: 16

Get fanspeed of device #0:

# usr/local/bin/aticonfig --pplib-cmd "get fanspeed 0" 
Fan speed query: 
Query Index: 0, Speed in percent
Result: Fan Speed: 100% 

Get clock information of device #0:

# /usr/local/bin/aticonfig --pplib-cmd "get clock 0" 
Engine Clock Range: 300-915 MHZ; Memory Clock Range: 300-1050 MHZ;

Set fanspeed of device #0 to 95%:

# /usr/local/bin/aticonfig --pplib-cmd "set fanspeed 0 95" 
PPLIB command execution is Successful!

/usr/bin/aticonfig --pplib-cmd="notify psrc dc"
PPLIB command execution is Successful! 

/usr/bin/aticonfig --pplib-cmd="notify psrc ac"
PPLIB command execution is Successful!