[PATCH 2/4] b43: set TMS to work with current band width for N-PHY

[Rafał Miłecki]

W dniu 9 grudnia 2010 15:19 użytkownik Michael Büsch <mb at bu3sch.de> napisał:
> On Thu, 2010-12-09 at 15:13 +0100, Rafał Miłecki wrote:
>> W dniu 9 grudnia 2010 15:12 użytkownik Rafał Miłecki <zajec5 at gmail.com> napisał:
>> > W dniu 7 grudnia 2010 22:08 użytkownik Michael Büsch <mb at bu3sch.de> napisał:
>> >> On Tue, 2010-12-07 at 21:55 +0100, Rafał Miłecki wrote:
>> >>> Signed-off-by: Rafał Miłecki <zajec5 at gmail.com>
>> >>> ---
>> >>>  drivers/net/wireless/b43/main.c       |    6 ++++++
>> >>>  drivers/net/wireless/b43/phy_common.c |    7 +++++++
>> >>>  drivers/net/wireless/b43/phy_common.h |    2 ++
>> >>>  drivers/net/wireless/b43/phy_n.c      |    7 -------
>> >>>  4 files changed, 15 insertions(+), 7 deletions(-)
>> >>>
>> >>> diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
>> >>> index fa48803..670fd7b 100644
>> >>> --- a/drivers/net/wireless/b43/main.c
>> >>> +++ b/drivers/net/wireless/b43/main.c
>> >>> @@ -1150,6 +1150,12 @@ void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)
>> >>>
>> >>>       flags |= B43_TMSLOW_PHYCLKEN;
>> >>>       flags |= B43_TMSLOW_PHYRESET;
>> >>> +     if (dev->phy.type == B43_PHYTYPE_N) {
>> >>> +             if (b43_channel_type_is_40mhz(dev->phy.channel_type))
>> >>
>> >> Is channel_type already set at this time?
>> >
>> > Yeah, that core switching seems to be a little tricky. I didn't figure
>> > it out completely yet. We may need to fix that, or fix calls to this
>> > function.
>> >
>> > Thanks for reviewing!
>>
>> In other words: it will work for now, but we need to fix that in
>> future if we want to get 40 MHz channels working.
>
> That's exactly what I was saying. ;)
> To answer my original question: No, channel_type is not set, but the
> code will work for non-40mhz.
>
> This seems a bit tricky to fix, though. Maybe we should reset the
> wireless core twice. Once initially and once again after the
> configuration was set. The first reset would just be to be able
> to access the PHY and wireless core at all to probe it.

Even more tricky is that we already reset code twice... At least in
b43_wireless_core_attach. Will have to redesign that a little.

-- 
Rafał