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Re: [PATCH RESEND] b43: implement baseband init for LP-PHY <= rev1

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On Mon, Aug 3, 2009 at 11:15 AM, Michael Buesch<mb@xxxxxxxxx> wrote:
> On Monday 03 August 2009 11:13:37 Michael Buesch wrote:
>> On Monday 03 August 2009 00:18:22 Gábor Stefanik wrote:
>> > Implement baseband init for rev.0 and rev.1 LP PHYs. Convert
>> > boardflags_hi values to defines.
>> > Implement b43_phy_copy for easier copying between registers, as needed
>> > by LP-PHY init.
>>
>> > +   if (bus->sprom.boardflags_hi&  B43_BFH_FEM_BT)&&
>> > +      (bus->chip_id == 0x5354)&&
>> > +      (bus->chip_package == SSB_CHIPPACK_BCM4712S)) {
>> > +           b43_phy_set(dev, B43_LPPHY_CRSGAIN_CTL, 0x0006);
>> > +           b43_phy_write(dev, B43_LPPHY_GPIO_SELECT, 0x0005);
>> > +           b43_phy_write(dev, B43_LPPHY_GPIO_OUTEN, 0xFFFF);
>> > +           b43_hf_write(dev, b43_hf_read | 0x0800ULL<<  32);
>> > +   }
>>
>> The HF write is wrong. Read the specification:
>> http://bcm-v4.sipsolutions.net/802.11/Mhf
>>
>> Patch otherwise looks ok.
>
> Sorry, I replied to the wrong mail. But this does also apply to V2 patch.
>
> --
> Greetings, Michael.
>

In V2, this line is as follows (b43_hf_read corrected):

b43_hf_write(dev, b43_hf_read(dev) | 0x0800ULL << 32)

The command in the specs is this:

mhf(2, 0x800, 0x800, 1)

2 means B43_SHM_SH_HOSTFHI, 0x800 is the bit to set, and 1 is
allbands, which, per Larry, can be ignored in our current
implementation (it is specific to the caching behavior of the mips
driver).

>From what I read in b43_hf_write, writing to HOSTFHI can be achieved
by left-shifting by 32 (16 for HOSTFMI).

Is the problem that we write all 3 hostflags registers here?

(BTW are there any other known host flags? If there are, maybe we
should #define them.)

-- 
Vista: [V]iruses, [I]ntruders, [S]pyware, [T]rojans and [A]dware. :-)
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