[PATCH v3 2/4] wifi: ath12k: add 11d scan offload support

[Jeff Johnson]

On 9/4/2024 7:35 PM, Kang Yang wrote:
> From: Wen Gong <quic_wgong at quicinc.com>
> 
> Add process of event WMI_11D_NEW_COUNTRY_EVENTID. Add handler for
> WMI_11D_SCAN_START_CMDID, WMI_11D_SCAN_STOP_CMDID.
> Use WMI_11D_SCAN_START_CMDID to trigger 11d scan then firmware will
> report 11d scan result by WMI_11D_NEW_COUNTRY_EVENTID. Host will
> update the new country code back to firmware.
> 
> The priority of 11d scan is WMI_SCAN_PRIORITY_MEDIUM in firmware, the
> priority of hw scan is WMI_SCAN_PRIORITY_LOW. Then hw scan will be
> canceled when 11d scan is running.
> 
> To avoid this, need to change the priority of first hw scan to
> WMI_SCAN_PRIORITY_MEDIUM. Add wait_for_completion_timeout() for
> scan.complete in ath12k_reg_update_chan_list(). Plus another existing
> wait in ath12k_scan_stop(), there are two places to wait the
> scan.complete. They run in different threads so it is possible that both
> of the enter into wait status. Therefore use complete_all() instead of
> complete() for scan.complete. complete_all() can work well when it is
> only one thread wait for scan.complete.
> 
> Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
> 
> Signed-off-by: Wen Gong <quic_wgong at quicinc.com>
> Co-developed-by: Kang Yang <quic_kangyang at quicinc.com>
> Signed-off-by: Kang Yang <quic_kangyang at quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson at quicinc.com>