On Sat, Aug 26, 2017 at 11:32:54PM -0700, Badhri Jagan Sridharan wrote:
> While performing PORT_RESET, upon receiving the cc disconnect
> signal from the underlaying tcpc device, TCPM transitions into
> unattached state. Consider, the current type of port while determining
stray ,; not really worth a resend.
> the unattached state.
>
> In the below logs, although the port_type was set to sink, TCPM
> transitioned into SRC_UNATTACHED.
>
> [ 762.290654] state change SRC_READY -> PORT_RESET
> [ 762.324531] Setting voltage/current limit 0 mV 0 mA
> [ 762.327912] polarity 0
> [ 762.334864] cc:=0
> [ 762.347193] pending state change PORT_RESET -> PORT_RESET_WAIT_OFF @ 100 ms
> [ 762.347200] VBUS off
> [ 762.347203] CC1: 2 -> 0, CC2: 0 -> 0 [state PORT_RESET, polarity 0, disconnected]
> [ 762.347206] state change PORT_RESET -> SRC_UNATTACHED
>
> Signed-off-by: Badhri Jagan Sridharan <Badhri@xxxxxxxxxx>
Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> ---
> drivers/staging/typec/tcpm.c | 12 +++++++++---
> 1 file changed, 9 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/staging/typec/tcpm.c b/drivers/staging/typec/tcpm.c
> index 0ae33330a5c7..645f43ee83df 100644
> --- a/drivers/staging/typec/tcpm.c
> +++ b/drivers/staging/typec/tcpm.c
> @@ -2117,10 +2117,16 @@ static inline enum tcpm_state ready_state(struct tcpm_port *port)
>
> static inline enum tcpm_state unattached_state(struct tcpm_port *port)
> {
> - if (port->pwr_role == TYPEC_SOURCE)
> + if (port->port_type == TYPEC_PORT_DRP) {
> + if (port->pwr_role == TYPEC_SOURCE)
> + return SRC_UNATTACHED;
> + else
> + return SNK_UNATTACHED;
> + } else if (port->port_type == TYPEC_PORT_DFP) {
> return SRC_UNATTACHED;
> - else
> - return SNK_UNATTACHED;
> + }
> +
> + return SNK_UNATTACHED;
> }
>
> static void tcpm_check_send_discover(struct tcpm_port *port)
> --
> 2.14.1.342.g6490525c54-goog
>
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