[mc1322x] Access to LQI

[Mariano Alvira]

On Thu, Jun 10, 2010 at 11:44:11AM +0100, Clive Stubbings wrote:
> Hi,
>
> I'm looking to get access to the Rx Link Quality Information. The 
> Freescale code seems to have a function MLMELinkQuality() that claims to 
> return
>
>   DAGC_RSSI =   Cal_factor_dB
>             - (LNA_min_gain_dB + lna_state*(LNA_max_gain_dB-LNA_min_gain_dB))
>             + (IFA_max_gain_dB - 3*ifa_state)
>             + rx_dagc_gain_state
>
> That seems quite convoluted, but if it provides an indication of link  
> quality/signal strength that will do me fine..
>
> However, all that does is call PhyPlmeGetLQI(). Needless to say 
> PhyPlmeGetLQI() seems to be in the MC1322x.a and I've not found any 
> documentation on how to access that information.
>
> Has anyone looked at this, or can anyone give me any pointers on how to 
> track it down?

It looks like it's in MACPHY.a and it's a ROM call:

0000e04c g     F *ABS*  00000000 PhyPlmeGetLQI

-Mar.