On Mon, Feb 01, 2021 at 04:31:01PM -0800, Badhri Jagan Sridharan wrote: > Configure USB switches when partner is USB Communication capable. > The is enabled USB data communication over D+/D- pins. > > Signed-off-by: Badhri Jagan Sridharan <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]> > --- > drivers/usb/typec/tcpm/tcpci_maxim.c | 19 +++++++++++++++++++ > 1 file changed, 19 insertions(+) > > diff --git a/drivers/usb/typec/tcpm/tcpci_maxim.c > b/drivers/usb/typec/tcpm/tcpci_maxim.c > index f1674a611033..041a1c393594 100644 > --- a/drivers/usb/typec/tcpm/tcpci_maxim.c > +++ b/drivers/usb/typec/tcpm/tcpci_maxim.c > @@ -19,6 +19,9 @@ > #define PD_ACTIVITY_TIMEOUT_MS 10000 > > #define TCPC_VENDOR_ALERT 0x80 > +#define TCPC_VENDOR_USBSW_CTRL 0x93 > +#define TCPC_VENDOR_USBSW_CTRL_ENABLE_USB_DATA 0x9 > +#define TCPC_VENDOR_USBSW_CTRL_DISABLE_USB_DATA 0 > > #define TCPC_RECEIVE_BUFFER_COUNT_OFFSET 0 > #define TCPC_RECEIVE_BUFFER_FRAME_TYPE_OFFSET 1 > @@ -274,6 +277,21 @@ static void process_tx(struct max_tcpci_chip *chip, u16 > status) > max_tcpci_init_regs(chip); > } > > +/* Enable USB switches when partner is USB communications capable */ > +static void max_tcpci_set_partner_usb_comm_capable(struct tcpci *tcpci, > struct tcpci_data *data, > + bool capable) > +{ > + struct max_tcpci_chip *chip = tdata_to_max_tcpci(data); > + int ret; > + > + ret = max_tcpci_write8(chip, TCPC_VENDOR_USBSW_CTRL, capable ? > + TCPC_VENDOR_USBSW_CTRL_ENABLE_USB_DATA : > + TCPC_VENDOR_USBSW_CTRL_DISABLE_USB_DATA); > + > + if (ret < 0) > + dev_err(chip->dev, "Failed to enable USB switches"); > +} > + > static irqreturn_t _max_tcpci_irq(struct max_tcpci_chip *chip, u16 status) > { > u16 mask; > @@ -453,6 +471,7 @@ static int max_tcpci_probe(struct i2c_client *client, > const struct i2c_device_id > chip->data.frs_sourcing_vbus = max_tcpci_frs_sourcing_vbus; > chip->data.auto_discharge_disconnect = true; > chip->data.vbus_vsafe0v = true; > + chip->data.set_partner_usb_comm_capable = > max_tcpci_set_partner_usb_comm_capable; > > max_tcpci_init_regs(chip); > chip->tcpci = tcpci_register_port(chip->dev, &chip->data); > -- > 2.30.0.365.g02bc693789-goog >
