From: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Date: Sat, 15 Jan 2022 00:16:43 +0000 (+0000)
Subject: wcn36xx: Implement get_snr()
X-Git-Tag: v5.18-rc1~136^2~372^2~71^2~6
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=039d5d4db4bccbc299ce3daa2d30e933c4a2719b;p=thirdparty%2Fkernel%2Flinux.git

wcn36xx: Implement get_snr()

The wcn36xx BD phy descriptor returns both Received Signal Strength
Information (RSSI) and Signal To Noise Ratio (SNR) with each delivered BD.

The macro to extract this data is a simple-one liner, easily imported from
prima driver. This data will be useful to us when implementing
mac80211-ops->get_survey().

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20220115001646.3981501-2-bryan.odonoghue@linaro.org
---

diff --git a/drivers/net/wireless/ath/wcn36xx/txrx.c b/drivers/net/wireless/ath/wcn36xx/txrx.c
index dd58dde8c8363..425d388b4a4d0 100644
--- a/drivers/net/wireless/ath/wcn36xx/txrx.c
+++ b/drivers/net/wireless/ath/wcn36xx/txrx.c
@@ -23,6 +23,11 @@ static inline int get_rssi0(struct wcn36xx_rx_bd *bd)
 	return 100 - ((bd->phy_stat0 >> 24) & 0xff);
 }
 
+static inline int get_snr(struct wcn36xx_rx_bd *bd)
+{
+	return ((bd->phy_stat1 >> 24) & 0xff);
+}
+
 struct wcn36xx_rate {
 	u16 bitrate;
 	u16 mcs_or_legacy_index;