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wifi: ath12k: fix signal in radiotap for WCN7850

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Currently host will add ATH12K_DEFAULT_NOISE_FLOOR to rssi_comb to
convert RSSI from dB to dBm.

For WCN7850, this conversion is unnecessary because the RSSI value is
already reported in dBm units.

No longer convert for those firmware that already support dBM conversion.

This patch won't affect QCN chips.

Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

Fixes: d889913205 ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices")
Signed-off-by: Kang Yang <kang.yang@oss.qualcomm.com>
Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250722095934.67-2-kang.yang@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
This commit is contained in:
Kang Yang
2025-07-22 17:59:32 +08:00
committed by Jeff Johnson
parent ea2b0af4c9
commit cf412ae7b7
1 changed files with 5 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/wireless/ath/ath12k/dp_mon.c
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@@ -2154,8 +2154,12 @@ static void ath12k_dp_mon_update_radiotap(struct ath12k *ar,
spin_unlock_bh(&ar->data_lock);
rxs->flag |= RX_FLAG_MACTIME_START;
rxs->signal = ppduinfo->rssi_comb + noise_floor;
rxs->nss = ppduinfo->nss + 1;
if (test_bit(WMI_TLV_SERVICE_HW_DB2DBM_CONVERSION_SUPPORT,
ar->ab->wmi_ab.svc_map))
rxs->signal = ppduinfo->rssi_comb;
else
rxs->signal = ppduinfo->rssi_comb + noise_floor;
if (ppduinfo->userstats[ppduinfo->userid].ampdu_present) {
rxs->flag |= RX_FLAG_AMPDU_DETAILS;