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Subject: Re: [PATCHv2] ath11k: Add spectral scan support for 160 MHz
From:   Kalle Valo <kvalo@kernel.org>
In-Reply-To: <20220725055001.15194-1-quic_tamizhr@quicinc.com>
References: <20220725055001.15194-1-quic_tamizhr@quicinc.com>
To:     Tamizh Chelvam Raja <quic_tamizhr@quicinc.com>
Cc:     <ath11k@lists.infradead.org>, <linux-wireless@vger.kernel.org>,
        Tamizh Chelvam Raja <quic_tamizhr@quicinc.com>
User-Agent: pwcli/0.1.1-git (https://github.com/kvalo/pwcli/) Python/3.7.3
Message-ID: <166368850044.9716.11466525208875594011.kvalo@kernel.org>
Date:   Tue, 20 Sep 2022 15:41:52 +0000 (UTC)
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Tamizh Chelvam Raja <quic_tamizhr@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@quicinc.com>
> Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>

This added a new sparse 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

I fixed that in the pending branch. Please remember to use ath11k-check to check your patches.

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

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