diff options
| -rw-r--r-- | drivers/usb/typec/tcpm/tcpci_maxim.c | 19 |
1 files changed, 19 insertions, 0 deletions
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); |