1 files changed, 34 insertions, 4 deletions

diff --git a/drivers/usb/typec/tcpm/tcpci_maxim_core.c b/drivers/usb/typec/tcpm/tcpci_maxim_core.c
index 7fb966fd639b3..eec3bcec119c1 100644
--- a/drivers/usb/typec/tcpm/tcpci_maxim_core.c
+++ b/drivers/usb/typec/tcpm/tcpci_maxim_core.c
@@ -128,6 +128,7 @@ static void process_rx(struct max_tcpci_chip *chip, u16 status)
 	u8 count, frame_type, rx_buf[TCPC_RECEIVE_BUFFER_LEN];
 	int ret, payload_index;
 	u8 *rx_buf_ptr;
+	enum tcpm_transmit_type rx_type;
 
 	/*
 	 * READABLE_BYTE_COUNT: Indicates the number of bytes in the RX_BUF_BYTE_x registers
@@ -143,10 +144,23 @@ static void process_rx(struct max_tcpci_chip *chip, u16 status)
 	count = rx_buf[TCPC_RECEIVE_BUFFER_COUNT_OFFSET];
 	frame_type = rx_buf[TCPC_RECEIVE_BUFFER_FRAME_TYPE_OFFSET];
 
-	if (count == 0 || frame_type != TCPC_RX_BUF_FRAME_TYPE_SOP) {
+	switch (frame_type) {
+	case TCPC_RX_BUF_FRAME_TYPE_SOP1:
+		rx_type = TCPC_TX_SOP_PRIME;
+		break;
+	case TCPC_RX_BUF_FRAME_TYPE_SOP:
+		rx_type = TCPC_TX_SOP;
+		break;
+	default:
+		rx_type = TCPC_TX_SOP;
+		break;
+	}
+
+	if (count == 0 || (frame_type != TCPC_RX_BUF_FRAME_TYPE_SOP &&
+	    frame_type != TCPC_RX_BUF_FRAME_TYPE_SOP1)) {
 		max_tcpci_write16(chip, TCPC_ALERT, TCPC_ALERT_RX_STATUS);
 		dev_err(chip->dev, "%s\n", count ==  0 ? "error: count is 0" :
-			"error frame_type is not SOP");
+			"error frame_type is not SOP/SOP'");
 		return;
 	}
 
@@ -183,7 +197,7 @@ static void process_rx(struct max_tcpci_chip *chip, u16 status)
 	if (ret < 0)
 		return;
 
-	tcpm_pd_receive(chip->port, &msg);
+	tcpm_pd_receive(chip->port, &msg, rx_type);
 }
 
 static int max_tcpci_set_vbus(struct tcpci *tcpci, struct tcpci_data *tdata, bool source, bool sink)
@@ -309,8 +323,10 @@ static irqreturn_t _max_tcpci_irq(struct max_tcpci_chip *chip, u16 status)
 		if (ret < 0)
 			return ret;
 
-		if (reg_status & TCPC_FAULT_STATUS_VCONN_OC)
+		if (reg_status & TCPC_FAULT_STATUS_VCONN_OC) {
+			chip->veto_vconn_swap = true;
 			tcpm_port_error_recovery(chip->port);
+		}
 	}
 
 	if (status & TCPC_ALERT_EXTND) {
@@ -444,6 +460,18 @@ static void max_tcpci_check_contaminant(struct tcpci *tcpci, struct tcpci_data *
 		tcpm_port_clean(chip->port);
 }
 
+static bool max_tcpci_attempt_vconn_swap_discovery(struct tcpci *tcpci, struct tcpci_data *tdata)
+{
+	struct max_tcpci_chip *chip = tdata_to_max_tcpci(tdata);
+
+	if (chip->veto_vconn_swap) {
+		chip->veto_vconn_swap = false;
+		return false;
+	}
+
+	return true;
+}
+
 static int max_tcpci_probe(struct i2c_client *client)
 {
 	int ret;
@@ -478,6 +506,8 @@ static int max_tcpci_probe(struct i2c_client *client)
 	chip->data.vbus_vsafe0v = true;
 	chip->data.set_partner_usb_comm_capable = max_tcpci_set_partner_usb_comm_capable;
 	chip->data.check_contaminant = max_tcpci_check_contaminant;
+	chip->data.cable_comm_capable = true;
+	chip->data.attempt_vconn_swap_discovery = max_tcpci_attempt_vconn_swap_discovery;
 
 	max_tcpci_init_regs(chip);
 	chip->tcpci = tcpci_register_port(chip->dev, &chip->data);