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wifi: ath12k: Add debugfs support to simulate incumbent signal interference

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Add debugfs support to simulate incumbent signal interference from the
host for testing purposes. The debugfs entry is created only for 6 GHz
radio when firmware advertises the support through
WMI_TLV_SERVICE_DCS_INCUMBENT_SIGNAL_INTERFERENCE_SUPPORT flag.

Debugfs command:
echo <interference_bitmap> > /sys/kernel/debug/ath12k/pci-000X/macX/simulate_incumbent_signal_interference

Each bit in the interference_bitmap represents a 20 MHz segment. Bit 0
corresponds to the primary 20 MHz segment, regardless of its position
within the operating bandwidth. Bit 1 represents the next adjacent 20 MHz
segment, bit 2 the lower 20 MHz segment of the adjacent 40 MHz segment,
and so on-progressing sequentially across the bandwidth..

Example:
echo 0xF0 > /sys/kernel/debug/ath12k/pci-0002:01:00.0/mac0/simulate_incumbent_signal_interference
This indicates that all the subchannels in the secondary 80 MHz segment
were affected.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.5-01651-QCAHKSWPL_SILICONZ-1

Signed-off-by: Aishwarya R <aishwarya.r@oss.qualcomm.com>
Signed-off-by: Amith A <amith.a@oss.qualcomm.com>
Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Reviewed-by: Rameshkumar Sundaram <rameshkumar.sundaram@oss.qualcomm.com>
Link: https://patch.msgid.link/20260511040242.1351792-3-amith.a@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
This commit is contained in:
Aishwarya R 2026-05-11 09:32:42 +05:30 • committed by Jeff Johnson
commit afa1bd86ed
3 changed files with 96 additions and 0 deletions
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