On Thu, Feb 20, 2020 at 12:05:43AM +0800, jun.li@xxxxxxx wrote:
> From: Li Jun <jun.li@xxxxxxx>
>
> Per typec spec:
> Figure 4-15 Connection State Diagram: DRP
> Figure 4-16 Connection State Diagram: DRP with Accessory and Try.SRC
> Support
> Figure 4-17 Connection State Diagram: DRP with Accessory and Try.SNK
> Support
> DRP port should move to Unattached.SNK instead of Unattached.SRC if
> sink removed.
>
> Signed-off-by: Li Jun <jun.li@xxxxxxx>
Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> ---
> drivers/usb/typec/tcpm/tcpm.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
> index 78077c2..3174180 100644
> --- a/drivers/usb/typec/tcpm/tcpm.c
> +++ b/drivers/usb/typec/tcpm/tcpm.c
> @@ -3680,8 +3680,12 @@ static void _tcpm_cc_change(struct tcpm_port *port, enum typec_cc_status cc1,
> case SRC_SEND_CAPABILITIES:
> case SRC_READY:
> if (tcpm_port_is_disconnected(port) ||
> - !tcpm_port_is_source(port))
> - tcpm_set_state(port, SRC_UNATTACHED, 0);
> + !tcpm_port_is_source(port)) {
> + if (port->port_type == TYPEC_PORT_SRC)
> + tcpm_set_state(port, SRC_UNATTACHED, 0);
> + else
> + tcpm_set_state(port, SNK_UNATTACHED, 0);
> + }
> break;
> case SNK_UNATTACHED:
> if (tcpm_port_is_sink(port))
> --
> 2.7.4
>
