diff options
| author | Diana Z <dzigterman@chromium.org> | 2021-04-13 20:18:22 -0600 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-04-14 21:37:23 +0000 |
| commit | fd16f618fa1e34a8c007f6a66a1ff4c9e9ef0424 (patch) | |
| tree | 78ac293c8ba53c97539fbc54bc337b2e44113ceb | |
| parent | 3b24719d7ad5616b4611abdd735dd8a84e7a6b5d (diff) | |
| download | chrome-ec-fd16f618fa1e34a8c007f6a66a1ff4c9e9ef0424.tar.gz | |
TCPMv2: Soft reset on Vconn_Swap sequence interruption
When a non-interruptible AMS is interrupted, the unexpected message
should yield a soft reset on the SOP* of the incoming message. Before
sending PS_RDY, check for this condition and soft reset if necessary.
BRANCH=None
BUG=b:182221344
TEST=on sasuke, confirm charger can successfully connect reliably
Signed-off-by: Diana Z <dzigterman@chromium.org>
Change-Id: I6612cb5d5d74cf99155cac99894a7746462a7b9e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2823633
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
| -rw-r--r-- | common/usbc/usb_pe_drp_sm.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/common/usbc/usb_pe_drp_sm.c b/common/usbc/usb_pe_drp_sm.c index e2724cf98c..2dc4649fe3 100644 --- a/common/usbc/usb_pe_drp_sm.c +++ b/common/usbc/usb_pe_drp_sm.c @@ -6433,6 +6433,18 @@ static void pe_vcs_send_ps_rdy_swap_entry(int port) { print_current_state(port); + /* Check for any interruptions to this non-interruptible AMS */ + if (PE_CHK_FLAG(port, PE_FLAGS_MSG_RECEIVED)) { + enum tcpm_transmit_type sop = + PD_HEADER_GET_SOP(rx_emsg[port].header); + + PE_CLR_FLAG(port, PE_FLAGS_MSG_RECEIVED); + + /* Soft reset with the SOP* of the incoming message */ + pe_send_soft_reset(port, sop); + return; + } + /* Send a PS_RDY Message */ send_ctrl_msg(port, TCPC_TX_SOP, PD_CTRL_PS_RDY); } |