wl1251 and NoA protocol

wl1251 and NoA protocol

[Andrés García Saavedra]

Hi all,

I would like to test Notice of Absence powersaving protocol for
802.11abg WLANs on some current android smartphone. My question is
regarding the wl1251 driver implementation for TI chipsets:

* Does the chipset/current implementation support sleep/awake
triggers? (or at least quiet elements?) -> This means, can I command
the NIC to stay quiet (slept) for certain duration of time?

My plan is to implement/test a Notice of Absence protocol where the
driver would trigger absent (quiet/sleep) periods according to the
beacon's NoA IE. Ive seen in the code the wl1251_ps_elp_sleep/wakeup
functions that might be reused for this purpose (?)

* Last (lazy) question. AFAIK only the google dev 1 phone uses this
chipset. Is there any 1ghz android device that could benefit of this
driver?


Thanks for your answer,
Andrés

Re: wl1251 and NoA protocol

[Luciano Coelho]

On Tue, 2011-10-18 at 11:13 +0200, Andrés García Saavedra wrote: 
> Hi all,
> 
> I would like to test Notice of Absence powersaving protocol for
> 802.11abg WLANs on some current android smartphone. My question is
> regarding the wl1251 driver implementation for TI chipsets:
> 
> * Does the chipset/current implementation support sleep/awake
> triggers? (or at least quiet elements?) -> This means, can I command
> the NIC to stay quiet (slept) for certain duration of time?
> 
> My plan is to implement/test a Notice of Absence protocol where the
> driver would trigger absent (quiet/sleep) periods according to the
> beacon's NoA IE. Ive seen in the code the wl1251_ps_elp_sleep/wakeup
> functions that might be reused for this purpose (?)
> 
> * Last (lazy) question. AFAIK only the google dev 1 phone uses this
> chipset. Is there any 1ghz android device that could benefit of this
> driver?

You should look for a device with some newer chip, like the wl1271, for
instance.  We are currently developing the wl12xx driver (for wl127x and
wl128x) a lot more actively than wl1251.  Besides, I don't think there's
any newer Android phone using wl1251...


-- 
Cheers,
Luca.