Re: rtw89: BT connect state differs between scoreboard and bt_info on RTL8851B

[Maxim Skokov]

Same on WL_FW 0.29.41.5, the newest in linux-firmware, with the sink
connected and playing:

  [status]     : enable:Y, btg:N, connect:N, mailbox_avl:Y
  [profile]    : profile: , A2DP_active:Y, PAN_active:N
  [bt_info]    : raw_data[49 00 d0 00 04 00] (type:auto/cnt:82/same:3)
  [scoreboard] : BT0->WL:0x40000003(total:0, bt_update:26)

BTC_BSCB_BT_CONNECT is not set here either.

Two further notes.

BTC_BSCB_A2DP_ACT was set before I reloaded the driver (BT0->WL was
0x40000013) and is not set after, with the sink connected and streaming
throughout. bt_update does not advance, so BT firmware appears to send a
scoreboard update only on change, and the state the driver lost on
rmmod/insmod is never restored.

The cycle reports are unavailable on this firmware, which is why I have no
slot statistics to go with this: fcxcysta[0/5], fcxslots[0/1],
fcxstep[0/3], fcxnullsta[0/2].