Hi Guenter, Sent V2 version of the patch stack: https://patchwork.kernel.org/project/linux-usb/list/?series=425705. For me, Gmail is grouping this under v1 version for some reason and since you had reviewed one other patch which was sent later, I was wondering if you are having similar grouping issue as well. I am pinging here to make sure that the patch isn't missed. Thanks, Badhri On Mon, Feb 1, 2021 at 4:31 PM Badhri Jagan Sridharan <badhri@xxxxxxxxxx> wrote: > > The USB Communications Capable bit indicates if port > partner is capable of communication over the USB data lines > (e.g. D+/- or SS Tx/Rx). Notify the status of the bit to low > level drivers to perform chip specific operation. > For instance, low level driver enables USB switches on D+/D- > lines to set up data path when the bit is set. > > Refactored from patch initially authored by > Kyle Tso <kyletso@xxxxxxxxxx> > > Signed-off-by: Badhri Jagan Sridharan <badhri@xxxxxxxxxx> > --- > Changes since V1: > - Removed partner_usb_comm_capable flag. > - Fixed capable flag for SNK_NEGOTIATE_CAPABILITIES. > --- > drivers/usb/typec/tcpm/tcpm.c | 13 +++++++++++++ > include/linux/usb/tcpm.h | 5 +++++ > 2 files changed, 18 insertions(+) > > diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c > index 0afd8ef692e8..997a1a56c161 100644 > --- a/drivers/usb/typec/tcpm/tcpm.c > +++ b/drivers/usb/typec/tcpm/tcpm.c > @@ -3429,6 +3429,14 @@ static void tcpm_unregister_altmodes(struct tcpm_port *port) > memset(modep, 0, sizeof(*modep)); > } > > +static void tcpm_set_partner_usb_comm_capable(struct tcpm_port *port, bool capable) > +{ > + tcpm_log(port, "Setting usb_comm capable %s", capable ? "true" : "false"); > + > + if (port->tcpc->set_partner_usb_comm_capable) > + port->tcpc->set_partner_usb_comm_capable(port->tcpc, capable); > +} > + > static void tcpm_reset_port(struct tcpm_port *port) > { > int ret; > @@ -3445,6 +3453,7 @@ static void tcpm_reset_port(struct tcpm_port *port) > port->attached = false; > port->pd_capable = false; > port->pps_data.supported = false; > + tcpm_set_partner_usb_comm_capable(port, false); > > /* > * First Rx ID should be 0; set this to a sentinel of -1 so that > @@ -3785,6 +3794,8 @@ static void run_state_machine(struct tcpm_port *port) > } > } else { > tcpm_pd_send_control(port, PD_CTRL_ACCEPT); > + tcpm_set_partner_usb_comm_capable(port, > + !!(port->sink_request & RDO_USB_COMM)); > tcpm_set_state(port, SRC_TRANSITION_SUPPLY, > PD_T_SRC_TRANSITION); > } > @@ -4004,6 +4015,8 @@ static void run_state_machine(struct tcpm_port *port) > break; > case SNK_NEGOTIATE_CAPABILITIES: > port->pd_capable = true; > + tcpm_set_partner_usb_comm_capable(port, > + !!(port->source_caps[0] & PDO_FIXED_USB_COMM)); > port->hard_reset_count = 0; > ret = tcpm_pd_send_request(port); > if (ret < 0) { > diff --git a/include/linux/usb/tcpm.h b/include/linux/usb/tcpm.h > index 3af99f85e8b9..42fcfbe10590 100644 > --- a/include/linux/usb/tcpm.h > +++ b/include/linux/usb/tcpm.h > @@ -108,6 +108,10 @@ enum tcpm_transmit_type { > * is supported by TCPC, set this callback for TCPM to query > * whether vbus is at VSAFE0V when needed. > * Returns true when vbus is at VSAFE0V, false otherwise. > + * @set_partner_usb_comm_capable: > + * Optional; The USB Communications Capable bit indicates if port > + * partner is capable of communication over the USB data lines > + * (e.g. D+/- or SS Tx/Rx). Called to notify the status of the bit. > */ > struct tcpc_dev { > struct fwnode_handle *fwnode; > @@ -139,6 +143,7 @@ struct tcpc_dev { > int (*set_auto_vbus_discharge_threshold)(struct tcpc_dev *dev, enum typec_pwr_opmode mode, > bool pps_active, u32 requested_vbus_voltage); > bool (*is_vbus_vsafe0v)(struct tcpc_dev *dev); > + void (*set_partner_usb_comm_capable)(struct tcpc_dev *dev, bool enable); > }; > > struct tcpm_port; > -- > 2.30.0.365.g02bc693789-goog >
