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Re: [RFC/RFT] b43: LP-PHY: Implement channel switching for rev2+/B2063 radio

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(List re-CC-ed.)

2009/8/13 Michael Buesch <mb@xxxxxxxxx>:
> On Thursday 13 August 2009 19:50:16 Gábor Stefanik wrote:
>> 2009/8/13 Michael Buesch <mb@xxxxxxxxx>:
>> > On Thursday 13 August 2009 17:02:21 Gábor Stefanik wrote:
>> >> Rev.2+/B2063 will now hopefully show some signs of life, though
>> >> it won't work at full performance, as calibration is still missing.
>> >>
>> >> Signed-off-by: Gábor Stefanik <netrolller.3d@xxxxxxxxx>
>> >
>> >>  static void lpphy_baseband_rev0_1_init(struct b43_wldev *dev)
>> >> @@ -1369,7 +1370,7 @@ static int b43_lpphy_op_init(struct b43_wldev *dev)
>> >>       lpphy_baseband_init(dev);
>> >>       lpphy_radio_init(dev);
>> >>       lpphy_calibrate_rc(dev);
>> >> -     //TODO set channel
>> >> +     b43_switch_channel(dev, dev->wl->hw->conf.channel->hw_value);
>> >
>> > Does dev->wl->hw->conf.channel->hw_value already have a sane value here?
>>
>> I think it should - hw->conf.channel was handed to us by mac80211.
>> http://bcm-v4.sipsolutions.net/802.11/PHY/LP/Init says "Set channel
>> with current chanspec as argument", and hw->conf.channel is our
>> equivalent of chanspec.
>
> hw->conf.channel was not handed to us at all. You simply pick it
> from mac80211's conf structure and _assume_ that it is initialized.
> In the other PHY implementations we use phyop_default_channel (or mandatory
> hardcoded channel values) in the PHY init only. I think you should do the
> same here. Mac80211 will make sure to select the correct channel later.

OK, I will use the default channel (though that's not exactly what the
spec says - Larry, is using the default channel correct?)

>
>> > Also please call b43_lpphy_op_switch_channel() instead of b43_switch_channel().
>>
>> No, that would be wrong; the generic parts of b43_switch_channel also
>> need to be executed. See
>
> I don't see why. The generic parts are nothing that should be done at the PHY init.

Well, the spec says that the generic parts need to be run, so I
implemented it as such.

Larry, is this part of the spec correct?

>
> --
> Greetings, Michael.
>



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