[PATCHv2] ath11k: Add spectral scan support for 160 MHz

[Kalle Valo]

Tamizh Chelvam Raja <quic_tamizhr at quicinc.com> wrote:

> There are two types of 160 MHz spectral scan support mentioned below
> 
> 1. Fragmented approach
> 2. Single event approach
> 
> In this fragmented approach, single 160 MHz will be split as two
> 80 MHz buffer. First fft sample buffer will contain spectral scan
> result of primary 80 MHz and the second fft sample buffer will contain
> secondary 80 MHz and here cfreq1 and cfreq2 will be mentioned.
> In case of 160 MHz on 36th channel will contain cfreq1 as 5210 and
> cfreq2 as 5290. Chipsets which support this approach are IPQ8074/IPQ6018.
> 
> Replacing freq1 with freq2 in every secondary sepctral scan event to
> distinguish between two different 80 MHz spectral event data.
> 
> In the 2nd approach each fft sample buffer will contain spectral scan
> result for whole 160 MHz by mentioning cfreq1 as 5250 which is center
> frequency of whole 160 MHz. Chipset which support this approach is QCN9074.
> 
> Host will receive spectral event from target for every 5 fft samples.
> 
> Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.5.0.1-01120-QCAHKSWPL-1
> Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.5.0.1-01120-QCAHKSWP
> 
> Signed-off-by: Tamizh Chelvam Raja <quic_tamizhr at quicinc.com>
> Signed-off-by: Kalle Valo <quic_kvalo at quicinc.com>

This added a new warning:

drivers/net/wireless/ath/ath11k/spectral.c:682:43: warning: incorrect type in assignment (different base types)
drivers/net/wireless/ath/ath11k/spectral.c:682:43:    expected restricted __be16 [usertype] freq1
drivers/net/wireless/ath/ath11k/spectral.c:682:43:    got unsigned short [assigned] [usertype] freq

Remember to use ath11k-check to check your code. I fixed this in the pending branch.

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20220725055001.15194-1-quic_tamizhr@quicinc.com/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches