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 <badhri@xxxxxxxxxx>
---
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
