[PATCHv3 2/2] ath10k: Allow setting coverage class

[Adrian Chadd]

hiya,

I'd honestly rather see firmware changes for wave 2 chips, as I know
there's a lot more MAC changes messing up this stuff ..



-adrian


On 16 October 2017 at 12:10, Sebastian Gottschall
<s.gottschall at dd-wrt.com> wrote:
> Am 16.10.2017 um 19:59 schrieb Adrian Chadd:
>>
>> On 16 October 2017 at 10:57, Ben Greear <greearb at candelatech.com> wrote:
>>>
>>> On 08/25/2016 06:25 AM, Benjamin Berg wrote:
>>>>
>>>> Unfortunately ath10k does not generally allow modifying the coverage
>>>> class
>>>> with the stock firmware and Qualcomm has so far refused to implement
>>>> this
>>>> feature so that it can be properly supported in ath10k. If we however
>>>> know
>>>> the registers that need to be modified for proper operation with a
>>>> higher
>>>> coverage class, then we can do these modifications from the driver.
>>>>
>>>> This patch implements this hack for first generation cards which are
>>>> based
>>>> on a core that is similar to ath9k. The registers are modified in place
>>>> and
>>>> need to be re-written every time the firmware sets them. To achieve this
>>>> the register status is verified after certain WMI events from the
>>>> firmware.
>>>>
>>>> The coverage class may not be modified temporarily right after the card
>>>> re-initializes the registers. This is for example the case during
>>>> scanning.
>>>>
>>>> Thanks to Sebastian Gottschall <s.gottschall at dd-wrt.com> for initially
>>>> working on a userspace support for this. This patch wouldn't have been
>>>> possible without this documentation.
>>>
>>>
>>> Hello,
>>>
>>> Do you happen to know the maximum distance that can work with this
>>> patch enabled?  The register value maximum seems to be 0x3FFF, but I
>>> am not sure of the units (nor how exactly that applies to distance).
>>
>> It's in MAC clocks still, right? So it depends on how fast the MAC
>> clock timer runs.
>>
>>
>>
>> -adrian
>
>
> if someone is interested i can provide a patch witch works as well for 998x
> and 9984 and usually other newer chipsets too.
>
> but clock parameters need to be adjusted for these newer ones. the only
> problem is that its based on unoffical registers which arent documented and
> the patch for the 99xx chipsets is very different from 988x
>
>
>
> --
> Mit freundlichen Grüssen / Regards
>
> Sebastian Gottschall / CTO
>
> NewMedia-NET GmbH - DD-WRT
> Firmensitz:  Stubenwaldallee 21a, 64625 Bensheim
>
> Registergericht: Amtsgericht Darmstadt, HRB 25473
> Geschäftsführer: Peter Steinhäuser, Christian Scheele
> http://www.dd-wrt.com
> email: s.gottschall at dd-wrt.com
> Tel.: +496251-582650 / Fax: +496251-5826565
>