tree 43f5e1e7b1b122f3073a6aebb2524af3b3eca69e
parent 79b64ac4badf06445f235f7a1bccb9d941c60371
author Vignesh Mohan <vignmoha@codeaurora.org> 1571832254 +0530
committer nshrivas <nshrivas@codeaurora.org> 1578810497 -0800

qcacmn: Reinit DFS after HW mode switch (phase 2)

Supported dynamic HW mode switches:
DBS (full band 5G and 2G) <-> DBS_SBS (low band 5G, high band 5G and 2G)

Description of the changes:

1. NOL conversion:
  a. Introduce a temporary NOL list copy structure in DFS psoc obj.
  b. When mode switch is triggered:
    i.   Stop the NOL timers and clear the data, to avoid processing NOL
         expiry during mode switch.
    ii.  Allocate the psoc NOL copy for the target num_radios.
    iii. Store the NOL data of each radio to the target pdev ID
         (pdev ID after mode switch) in the psoc NOL copy,
	 using a unified mux/demux API.
  c. After mode switch is completed:
    i.   Resume NOL by re-initializing the list from the temporary psoc
         copy.
    ii.  Free the psoc copy after mode switch is complete.
    iii. Note: changes are made to support pause and resume of NOL,
         increasing NOL timeout by a few milliseconds.

2. PreCAC list conversion:
  a. When mode switch is triggered:
    i. Stop the existing preCAC timer and send ADFS abort command to FW.
  b. When mode switch is completed:
    i.  Unify/separate the preCAC list if the target mode is DBS/DBS_SBS
        respectively, using a single API.
    ii. Start ADFS again.

3. Radar detection lock:
  a. While detecting radar, acquire a lock to avoid handling user triggered
     mode_switch during this process. Release the lock once radar
     processing is completed and CSA start is triggered.

4. Radar detection/CAC completion defer during mode switch:
  a. While detecting radar or CAC completion, check if mode switch is
     in progress. If yes, defer the processing and wait for mode switch to
     complete before handling the events.
  b. Note: Precedence is Radar over CAC, i.e., if CAC processing is waiting
     and radar is received, CAC completion is no longer handled.

CRs-Fixed: 2580403
Change-Id: I506f3b569bad2e351c6f336e50f203cf5fa8b223