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Commit 3c13b80c authored by Badhri Jagan Sridharan's avatar Badhri Jagan Sridharan Committed by Badhri Jagan Sridharan
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usb: fusb302: WAR for sending contol packets during PR_SWAP


Fairchild chip cannot send control packets when
TOGDONE interrupt is enabled. Since, TOGDONE is not
needed during PR_SWAP as CC pin is manupulated, do
not enable TOGDONE interrupt to unblock chip on sending
the control messages (i.e) PS_RDY or else the chip
times out while sending the control message.

[  339.160823] state change SRC_READY -> PR_SWAP_SEND
[  339.163264] PD TX, header: 0xb6a
[  339.167324] PD TX complete, status: 0
[  339.167430] pending state change PR_SWAP_SEND -> PR_SWAP_SEND_TIMEOUT @ 60 ms
[  339.170034] PD RX, header: 0x643 [1]
[  339.170044] state change PR_SWAP_SEND -> PR_SWAP_START
[  339.170074] pending state change PR_SWAP_START -> PR_SWAP_SRC_SNK_TRANSITION_OFF @ 35 ms
[  339.206735] state change PR_SWAP_START -> PR_SWAP_SRC_SNK_TRANSITION_OFF [delayed 35 ms]
[  339.206749] vbus:=0 charge=0
[  339.206885] pending state change PR_SWAP_SRC_SNK_TRANSITION_OFF -> PR_SWAP_SRC_SNK_SOURCE_OFF @ 920 ms
[  339.208394] VBUS off
[  339.208399] state change PR_SWAP_SRC_SNK_TRANSITION_OFF -> PR_SWAP_SRC_SNK_SOURCE_OFF
[  339.208413] cc:=2
[  339.212535] PD TX, header: 0xd66

// chip times out sending the
[  339.313335] state change PR_SWAP_SRC_SNK_SOURCE_OFF -> ERROR_RECOVERY
[  339.320588] Setting voltage/current limit 0 mV 0 mA
[  339.320610] polarity 0
[  339.321003] cc:=0
[  339.322475] pending state change ERROR_RECOVERY -> ERROR_RECOVERY_WAIT_OFF @ 100 ms
[  339.419997] state change ERROR_RECOVERY -> ERROR_RECOVERY_WAIT_OFF [delayed 100 ms]
[  339.420005] state change ERROR_RECOVERY_WAIT_OFF -> SNK_UNATTACHED
[  339.420007] Start DRP toggling

The TOGDONE interrupt is not always expected to happen either as
both the local and remote end can be Rd-Rd when PR_SWAP is in
progress.

Bug: 62492793
Signed-off-by: default avatarBadhri Jagan Sridharan <Badhri@google.com>
parent 4ed94685
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