[PATCH v2 2/2] ath10k: support get/set antenna configurations.

[Avery Pennarun]

On Mon, May 12, 2014 at 12:17 PM, Ben Greear <greearb at candelatech.com> wrote:
> My patch was against my own tree which is a mix of 3.14 and an older version of git://github.com/kvalo/ath.git
>
> I do not have time right now to re-do the patch, but next time I get some time I will
> fix the patch to apply to ath.git.  If someone else wants to do it first, I will not
> complain :)

I've tested it and will upload a re-spun version against a more resent
ath-next shortly.

Using firmware 10.1.467.2-1, I tested it as follows:
- disconnected the second antenna
- iw phy phy1 set antenna {all, 1, 2, 4, 6, 3, 5, 7}
- Measure iperf performance and RSSI from my (2x2) macbook.

Expected:
- lower RSSI when using fewer antennas
- very poor signal when using only the disconnected antenna
- slower speeds when using fewer antennas

Actual:
- my AP did not successfully send out any beacons with antenna modes 2, 4, or 6.
- RSSI was roughly 6dB less with 1 than with 5 or 7
- seemed to degrade to 1 spatial stream as expected in modes 1 and 3
- 2 spatial streams and good RSSI as expected in modes 5 and 7

So there seems to be a problem when the first antenna is not enabled.
Firmware bug perhaps?

Thanks,

Avery