ath9k channel switch

ath9k channel switch

[Saurabh Pal]

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Hi all,

Just wanted to know whether it is possible to switch the channel without
resetting the chip. Also if possible can anybody tell me how much time it
takes to switch the channel by resetting the chip?

Quoting from the driver:

>/* Set/change channels.  If the channel is really being changed, it's done
> * by reseting the chip.  To accomplish this we must first cleanup any
pending
> * DMA, then restart stuff.
>*/
>static int ath_set_channel(struct ath_softc *sc)


Regards,
Saurabh

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Re: [ath9k-devel] ath9k channel switch

[Sujith Manoharan]

Saurabh Pal wrote:
> Just wanted to know whether it is possible to switch the channel without
> resetting the chip. Also if possible can anybody tell me how much time it
> takes to switch the channel by resetting the chip?

Fast Channel Change is used to switch channels without a full chip reset.
The time taken to switch channels is not exported, but you can measure it
in the driver.

Sujith
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Re: ath9k channel switch

[Saurabh Pal]

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Hi,
 Thanks for the reply sujith. Just wanted to know if the function
'ath9k_hw_do_fastcc()' can be used directly or I need to consider
somethings before using it.

Saurabh

On Sun, Mar 15, 2015 at 8:09 AM, Sujith Manoharan <sujith@msujith.org>
wrote:

> Saurabh Pal wrote:
> > Just wanted to know whether it is possible to switch the channel without
> > resetting the chip. Also if possible can anybody tell me how much time it
> > takes to switch the channel by resetting the chip?
>
> Fast Channel Change is used to switch channels without a full chip reset.
> The time taken to switch channels is not exported, but you can measure it
> in the driver.
>
> Sujith
>

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Re: [ath9k-devel] ath9k channel switch

[Adrian Chadd]

Hi,

You can do a fast channel switch under very specific conditions. It
includes but isn't limited to being on the same band (ie, no fast cc
between 2/5ghz.)


-adrian
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