On 2/1/21 7:38 PM, Badhri Jagan Sridharan wrote:
> Receiving the first packet in an AMS sequence signals the
> beginning of AMS. Set in_ams flag to true when SRC_CAPS are
> received during POWER_NEGOTIATION AMS.
> This fixes the failure flagged while running TD.PD.SNK.E9
> compliance test.
>
>>From Deterministic PD compliance MOI spec:
> TD.PD.SNK.E9. GetSinkCap in Place of Accept
> Description:
> As Provider, the Tester intentionally sends a GetSinkCap message in place
> of Accept message and verifies the UUT will send a SoftReset and recover
> from the error.
> Steps:
> a) Run PROC.PD.E1 Bring-up according to the UUT role.
> b) The Tester cycles VBus.
> c) The Tester sends a Source Capabilities message to the UUT.
> d) Upon receipt of a Request message from the UUT, the Tester replies with
> a GoodCRC message.
> e) The Tester sends a GetSinkCap message to the UUT.
> f) If a SoftReset is not received within 15 ms after the GetSinkCap EOP was
> sent, the test fails.
> g) If a SoftReset is received timely, the Tester replies with an Accept
> message.
> h) The Tester sends Source Capabilities message to the UUT repeatedly until
> nCapsCount reached or a GoodCRC is received. If nCapsCount reached, the
> test fails.
> i) If a Request is not received timely within 30 ms after the GoodCRC EOP
> corresponding to Source Capabilities message was received, the test
> fails.
>
> Signed-off-by: Badhri Jagan Sridharan <badhri@xxxxxxxxxx>
Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> ---
> drivers/usb/typec/tcpm/tcpm.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
> index 0afd8ef692e8..b3e07d9b7597 100644
> --- a/drivers/usb/typec/tcpm/tcpm.c
> +++ b/drivers/usb/typec/tcpm/tcpm.c
> @@ -2243,6 +2243,7 @@ static void tcpm_pd_data_request(struct tcpm_port *port,
> * handled.
> */
> port->ams = POWER_NEGOTIATION;
> + port->in_ams = true;
> tcpm_set_state(port, SNK_NEGOTIATE_CAPABILITIES, 0);
> } else {
> if (port->ams == GET_SOURCE_CAPABILITIES)
>
