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[RK3588-Android12] 关于如何取消usb-typec的pd充电功能

news 2025/7/7 2:46:00

问题描述

RK3588取消usb-typec的pd充电功能

解决方案：

在dts中fusb302节点下usb_con: connector子节点下添加如下熟悉：
请添加图片描述
打上如下2个补丁

diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
index c8a4e57c9f9b..173f8cb75b8e 100644
--- a/drivers/usb/typec/tcpm/tcpm.c
+++ b/drivers/usb/typec/tcpm/tcpm.c
@@ -317,6 +317,7 @@ struct tcpm_port {struct typec_partner *partner;enum typec_cc_status cc_req;
+	enum typec_cc_status src_rp;	/* work only if pd_supported == false */enum typec_cc_status cc1;enum typec_cc_status cc2;
@@ -324,6 +325,7 @@ struct tcpm_port {bool attached;bool connected;
+	bool pd_supported;enum typec_port_type port_type;/*
@@ -827,6 +829,9 @@ static enum typec_cc_status tcpm_rp_cc(struct tcpm_port *port)int nr_pdo = port->nr_src_pdo;int i;+	if (!port->pd_supported)
+		return port->src_rp;
+/** Search for first entry with matching voltage.* It should report the maximum supported current.
@@ -3682,9 +3687,11 @@ static int tcpm_src_attach(struct tcpm_port *port)if (ret < 0)return ret;-	ret = port->tcpc->set_pd_rx(port->tcpc, true);
-	if (ret < 0)
-		goto out_disable_mux;
+	if (port->pd_supported) {
+		ret = port->tcpc->set_pd_rx(port->tcpc, true);
+		if (ret < 0)
+			goto out_disable_mux;
+	}/** USB Type-C specification, version 1.2,
@@ -3715,7 +3722,8 @@ static int tcpm_src_attach(struct tcpm_port *port)out_disable_vconn:tcpm_set_vconn(port, false);out_disable_pd:
-	port->tcpc->set_pd_rx(port->tcpc, false);
+	if (port->pd_supported)
+		port->tcpc->set_pd_rx(port->tcpc, false);out_disable_mux:tcpm_mux_set(port, TYPEC_STATE_SAFE, USB_ROLE_NONE,TYPEC_ORIENTATION_NONE);
@@ -3931,6 +3939,20 @@ static enum typec_pwr_opmode tcpm_get_pwr_opmode(enum typec_cc_status cc)}}+static enum typec_cc_status tcpm_pwr_opmode_to_rp(enum typec_pwr_opmode opmode)
+{
+	switch (opmode) {
+	case TYPEC_PWR_MODE_USB:
+		return TYPEC_CC_RP_DEF;
+	case TYPEC_PWR_MODE_1_5A:
+		return TYPEC_CC_RP_1_5;
+	case TYPEC_PWR_MODE_3_0A:
+	case TYPEC_PWR_MODE_PD:
+	default:
+		return TYPEC_CC_RP_3_0;
+	}
+}
+static void run_state_machine(struct tcpm_port *port){int ret;
@@ -4061,6 +4083,10 @@ static void run_state_machine(struct tcpm_port *port)if (port->ams == POWER_ROLE_SWAP ||port->ams == FAST_ROLE_SWAP)tcpm_ams_finish(port);
+		if (!port->pd_supported) {
+			tcpm_set_state(port, SRC_READY, 0);
+			break;
+		}port->upcoming_state = SRC_SEND_CAPABILITIES;tcpm_ams_start(port, POWER_NEGOTIATION);break;
@@ -4333,7 +4359,10 @@ static void run_state_machine(struct tcpm_port *port)current_limit = PD_P_SNK_STDBY_MW / 5;tcpm_set_current_limit(port, current_limit, 5000);tcpm_set_charge(port, true);
-			tcpm_set_state(port, SNK_WAIT_CAPABILITIES, 0);
+			if (!port->pd_supported)
+				tcpm_set_state(port, SNK_READY, 0);
+			else
+				tcpm_set_state(port, SNK_WAIT_CAPABILITIES, 0);break;}/*
@@ -4582,7 +4611,8 @@ static void run_state_machine(struct tcpm_port *port)tcpm_set_vbus(port, true);if (port->ams == HARD_RESET)tcpm_ams_finish(port);
-		port->tcpc->set_pd_rx(port->tcpc, true);
+		if (port->pd_supported)
+			port->tcpc->set_pd_rx(port->tcpc, true);tcpm_set_attached_state(port, true);tcpm_set_state(port, SRC_UNATTACHED, PD_T_PS_SOURCE_ON);break;
@@ -6121,6 +6151,7 @@ EXPORT_SYMBOL_GPL(tcpm_tcpc_reset);static int tcpm_fw_get_caps(struct tcpm_port *port,struct fwnode_handle *fwnode){
+	const char *opmode_str;const char *cap_str;int ret;u32 mw, frs_current, pd_revision;
@@ -6153,22 +6184,37 @@ static int tcpm_fw_get_caps(struct tcpm_port *port,return ret;port->typec_caps.type = ret;port->port_type = port->typec_caps.type;
+	port->pd_supported = !fwnode_property_read_bool(fwnode, "pd-disable");port->slow_charger_loop = fwnode_property_read_bool(fwnode, "slow-charger-loop");if (port->port_type == TYPEC_PORT_SNK)goto sink;-	/* Get source pdos */
-	ret = fwnode_property_count_u32(fwnode, "source-pdos");
-	if (ret <= 0)
-		return -EINVAL;
+	/* Get Source PDOs for the PD port or Source Rp value for the non-PD port */
+	if (port->pd_supported) {
+		ret = fwnode_property_count_u32(fwnode, "source-pdos");
+		if (ret == 0)
+			return -EINVAL;
+		else if (ret < 0)
+			return ret;-	port->nr_src_pdo = min(ret, PDO_MAX_OBJECTS);
-	ret = fwnode_property_read_u32_array(fwnode, "source-pdos",
-					     port->src_pdo, port->nr_src_pdo);
-	if ((ret < 0) || tcpm_validate_caps(port, port->src_pdo,
-					    port->nr_src_pdo))
-		return -EINVAL;
+		port->nr_src_pdo = min(ret, PDO_MAX_OBJECTS);
+		ret = fwnode_property_read_u32_array(fwnode, "source-pdos",
+						     port->src_pdo, port->nr_src_pdo);
+		if (ret)
+			return ret;
+		ret = tcpm_validate_caps(port, port->src_pdo, port->nr_src_pdo);
+		if (ret)
+			return ret;
+	} else {
+		ret = fwnode_property_read_string(fwnode, "typec-power-opmode", &opmode_str);
+		if (ret)
+			return ret;
+		ret = typec_find_pwr_opmode(opmode_str);
+		if (ret < 0)
+			return ret;
+		port->src_rp = tcpm_pwr_opmode_to_rp(ret);
+	}if (port->port_type == TYPEC_PORT_SRC)return 0;
@@ -6182,6 +6228,11 @@ static int tcpm_fw_get_caps(struct tcpm_port *port,if (port->typec_caps.prefer_role < 0)return -EINVAL;sink:
+	port->self_powered = fwnode_property_read_bool(fwnode, "self-powered");
+
+	if (!port->pd_supported)
+		return 0;
+/* Get sink pdos */ret = fwnode_property_count_u32(fwnode, "sink-pdos");if (ret <= 0)
@@ -6198,9 +6249,7 @@ static int tcpm_fw_get_caps(struct tcpm_port *port,return -EINVAL;port->operating_snk_mw = mw / 1000;-	port->self_powered = fwnode_property_read_bool(fwnode, "self-powered");
-
-	/* FRS can only be supported byb DRP ports */
+	/* FRS can only be supported by DRP ports */if (port->port_type == TYPEC_PORT_DRP) {ret = fwnode_property_read_u32(fwnode, "new-source-frs-typec-current",&frs_current);
-- 

diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
index 173f8cb75b8e..afeed1a05545 100644
--- a/drivers/usb/typec/tcpm/tcpm.c
+++ b/drivers/usb/typec/tcpm/tcpm.c
@@ -6512,6 +6512,13 @@ static int tcpm_psy_set_prop(struct power_supply *psy,struct tcpm_port *port = power_supply_get_drvdata(psy);int ret;+	/*
+	 * All the properties below are related to USB PD. The check needs to be
+	 * property specific when a non-pd related property is added.
+	 */
+	if (!port->pd_supported)
+		return -EOPNOTSUPP;
+switch (psp) {case POWER_SUPPLY_PROP_ONLINE:ret = tcpm_psy_set_online(port, val);
--
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