[PATCH v10 0/4] Introduce PMIC based USB type C detection

[PATCH v10 0/4] Introduce PMIC based USB type C detection

[Wesley Cheng]

Changes in v10:
 - Modified the type c dt-binding to remove the DRD switch node outside of the
   connector, as it is more of a SW entity, whereas the USB connector model
   focuses more on how the connector pins are connected in the HW design.  The
   binding now matches what is specified in the usb-connector binding.
 - Change the fwnode to search for the remote endpoint referencing the usb role
   switch device in qcom-pmic-typec
 - Rename typec node from "typec" to "usb-typec"

Changes in v9:
 - Fixed dt-binding to reference usb-connector from the 'connector' node,
   removed properties that didn't have further constraints (than specified in
   usb-connector.yaml), and make 'reg' a required property.
 - Moved vbus_reg get call into probe(), and will fail if the regulator is not
   available.
 - Removed some references from qcom_pmic_typec, as they were not needed after
   probe().
 - Moved interrupt registration until after all used variables were initialized.

Changes in v8:
 - Simplified some property definitions, and corrected the
   connector reference in the dt binding.

Changes in v7:
 - Fixups in qcom-pmic-typec.c to remove uncesscary includes, printk formatting,
   and revising some logic operations. 

Changes in v6:
 - Removed qcom_usb_vbus-regulator.c and qcom,usb-vbus-regulator.yaml from the
   series as they have been merged on regulator.git
 - Added separate references to the usb-connector.yaml in qcom,pmic-typec.yaml
   instead of referencing the entire schema.

Changes in v5:
 - Fix dt_binding_check warning/error in qcom,pmic-typec.yaml

Changes in v4:
 - Modified qcom,pmic-typec binding to include the SS mux and the DRD remote
   endpoint nodes underneath port@1, which is assigned to the SSUSB path
   according to usb-connector
 - Added usb-connector reference to the typec dt-binding
 - Added tags to the usb type c and vbus nodes
 - Removed "qcom" tags from type c and vbus nodes
 - Modified Kconfig module name, and removed module alias from the typec driver
 
Changes in v3:
 - Fix driver reference to match driver name in Kconfig for
   qcom_usb_vbus-regulator.c
 - Utilize regulator bitmap helpers for enable, disable and is enabled calls in
   qcom_usb_vbus-regulator.c
 - Use of_get_regulator_init_data() to initialize regulator init data, and to
   set constraints in qcom_usb_vbus-regulator.c
 - Remove the need for a local device structure in the vbus regulator driver
 
Changes in v2:
 - Use devm_kzalloc() in qcom_pmic_typec_probe()
 - Add checks to make sure return value of typec_find_port_power_role() is
   valid
 - Added a VBUS output regulator driver, which will be used by the PMIC USB
   type c driver to enable/disable the source
 - Added logic to control vbus source from the PMIC type c driver when
   UFP/DFP is detected
 - Added dt-binding for this new regulator driver
 - Fixed Kconfig typec notation to match others
 - Leave type C block disabled until enabled by a platform DTS

Add the required drivers for implementing type C orientation and role
detection using the Qualcomm PMIC.  Currently, PMICs such as the PM8150B
have an integrated type C block, which can be utilized for this.  This
series adds the dt-binding, PMIC type C driver, and DTS nodes.

The PMIC type C driver will register itself as a type C port w/ a
registered type C switch for orientation, and will fetch a USB role switch
handle for the role notifications.  It will also have the ability to enable
the VBUS output to any connected devices based on if the device is behaving
as a UFP or DFP.

Wesley Cheng (4):
  usb: typec: Add QCOM PMIC typec detection driver
  dt-bindings: usb: Add Qualcomm PMIC type C controller dt-binding
  arm64: boot: dts: qcom: pm8150b: Add node for USB type C block
  arm64: boot: dts: qcom: pm8150b: Add DTS node for PMIC VBUS booster

 .../bindings/usb/qcom,pmic-typec.yaml         | 115 ++++++++
 arch/arm64/boot/dts/qcom/pm8150b.dtsi         |  13 +
 arch/arm64/boot/dts/qcom/sm8150-mtp.dts       |   4 +
 drivers/usb/typec/Kconfig                     |  12 +
 drivers/usb/typec/Makefile                    |   1 +
 drivers/usb/typec/qcom-pmic-typec.c           | 262 ++++++++++++++++++
 6 files changed, 407 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml
 create mode 100644 drivers/usb/typec/qcom-pmic-typec.c

-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

[PATCH v10 1/4] usb: typec: Add QCOM PMIC typec detection driver

[Wesley Cheng]

The QCOM SPMI typec driver handles the role and orientation detection, and
notifies client drivers using the USB role switch framework.   It registers
as a typec port, so orientation can be communicated using the typec switch
APIs.  The driver also attains a handle to the VBUS output regulator, so it
can enable/disable the VBUS source when acting as a host/device.

Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
---
 drivers/usb/typec/Kconfig           |  12 ++
 drivers/usb/typec/Makefile          |   1 +
 drivers/usb/typec/qcom-pmic-typec.c | 262 ++++++++++++++++++++++++++++
 3 files changed, 275 insertions(+)
 create mode 100644 drivers/usb/typec/qcom-pmic-typec.c

diff --git a/drivers/usb/typec/Kconfig b/drivers/usb/typec/Kconfig
index 559dd06117e7..63789cf88fce 100644
--- a/drivers/usb/typec/Kconfig
+++ b/drivers/usb/typec/Kconfig
@@ -73,6 +73,18 @@ config TYPEC_TPS6598X
 	  If you choose to build this driver as a dynamically linked module, the
 	  module will be called tps6598x.ko.
 
+config TYPEC_QCOM_PMIC
+	tristate "Qualcomm PMIC USB Type-C driver"
+	depends on ARCH_QCOM || COMPILE_TEST
+	help
+	  Driver for supporting role switch over the Qualcomm PMIC.  This will
+	  handle the USB Type-C role and orientation detection reported by the
+	  QCOM PMIC if the PMIC has the capability to handle USB Type-C
+	  detection.
+
+	  It will also enable the VBUS output to connected devices when a
+	  DFP connection is made.
+
 source "drivers/usb/typec/mux/Kconfig"
 
 source "drivers/usb/typec/altmodes/Kconfig"
diff --git a/drivers/usb/typec/Makefile b/drivers/usb/typec/Makefile
index 7753a5c3cd46..cceffd987643 100644
--- a/drivers/usb/typec/Makefile
+++ b/drivers/usb/typec/Makefile
@@ -6,4 +6,5 @@ obj-$(CONFIG_TYPEC_TCPM)	+= tcpm/
 obj-$(CONFIG_TYPEC_UCSI)	+= ucsi/
 obj-$(CONFIG_TYPEC_HD3SS3220)	+= hd3ss3220.o
 obj-$(CONFIG_TYPEC_TPS6598X)	+= tps6598x.o
+obj-$(CONFIG_TYPEC_QCOM_PMIC)	+= qcom-pmic-typec.o
 obj-$(CONFIG_TYPEC)		+= mux/
diff --git a/drivers/usb/typec/qcom-pmic-typec.c b/drivers/usb/typec/qcom-pmic-typec.c
new file mode 100644
index 000000000000..a0454a80c4a2
--- /dev/null
+++ b/drivers/usb/typec/qcom-pmic-typec.c
@@ -0,0 +1,262 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <linux/usb/role.h>
+#include <linux/usb/typec_mux.h>
+
+#define TYPEC_MISC_STATUS		0xb
+#define CC_ATTACHED			BIT(0)
+#define CC_ORIENTATION			BIT(1)
+#define SNK_SRC_MODE			BIT(6)
+#define TYPEC_MODE_CFG			0x44
+#define TYPEC_DISABLE_CMD		BIT(0)
+#define EN_SNK_ONLY			BIT(1)
+#define EN_SRC_ONLY			BIT(2)
+#define TYPEC_VCONN_CONTROL		0x46
+#define VCONN_EN_SRC			BIT(0)
+#define VCONN_EN_VAL			BIT(1)
+#define TYPEC_EXIT_STATE_CFG		0x50
+#define SEL_SRC_UPPER_REF		BIT(2)
+#define TYPEC_INTR_EN_CFG_1		0x5e
+#define TYPEC_INTR_EN_CFG_1_MASK	GENMASK(7, 0)
+
+struct qcom_pmic_typec {
+	struct device		*dev;
+	struct regmap		*regmap;
+	u32			base;
+
+	struct typec_port	*port;
+	struct usb_role_switch *role_sw;
+
+	struct regulator	*vbus_reg;
+	bool			vbus_enabled;
+};
+
+static void qcom_pmic_typec_enable_vbus_regulator(struct qcom_pmic_typec
+							*qcom_usb, bool enable)
+{
+	int ret;
+
+	if (enable == qcom_usb->vbus_enabled)
+		return;
+
+	if (enable) {
+		ret = regulator_enable(qcom_usb->vbus_reg);
+		if (ret)
+			return;
+	} else {
+		ret = regulator_disable(qcom_usb->vbus_reg);
+		if (ret)
+			return;
+	}
+	qcom_usb->vbus_enabled = enable;
+}
+
+static void qcom_pmic_typec_check_connection(struct qcom_pmic_typec *qcom_usb)
+{
+	enum typec_orientation orientation;
+	enum usb_role role;
+	unsigned int stat;
+	bool enable_vbus;
+
+	regmap_read(qcom_usb->regmap, qcom_usb->base + TYPEC_MISC_STATUS,
+		    &stat);
+
+	if (stat & CC_ATTACHED) {
+		orientation = (stat & CC_ORIENTATION) ?
+				TYPEC_ORIENTATION_REVERSE :
+				TYPEC_ORIENTATION_NORMAL;
+		typec_set_orientation(qcom_usb->port, orientation);
+
+		role = (stat & SNK_SRC_MODE) ? USB_ROLE_HOST : USB_ROLE_DEVICE;
+		if (role == USB_ROLE_HOST)
+			enable_vbus = true;
+		else
+			enable_vbus = false;
+	} else {
+		role = USB_ROLE_NONE;
+		enable_vbus = false;
+	}
+
+	qcom_pmic_typec_enable_vbus_regulator(qcom_usb, enable_vbus);
+	usb_role_switch_set_role(qcom_usb->role_sw, role);
+}
+
+static irqreturn_t qcom_pmic_typec_interrupt(int irq, void *_qcom_usb)
+{
+	struct qcom_pmic_typec *qcom_usb = _qcom_usb;
+
+	qcom_pmic_typec_check_connection(qcom_usb);
+	return IRQ_HANDLED;
+}
+
+static void qcom_pmic_typec_typec_hw_init(struct qcom_pmic_typec *qcom_usb,
+					  enum typec_port_type type)
+{
+	u8 mode = 0;
+
+	regmap_update_bits(qcom_usb->regmap,
+			   qcom_usb->base + TYPEC_INTR_EN_CFG_1,
+			   TYPEC_INTR_EN_CFG_1_MASK, 0);
+
+	if (type == TYPEC_PORT_SRC)
+		mode = EN_SRC_ONLY;
+	else if (type == TYPEC_PORT_SNK)
+		mode = EN_SNK_ONLY;
+
+	regmap_update_bits(qcom_usb->regmap, qcom_usb->base + TYPEC_MODE_CFG,
+			   EN_SNK_ONLY | EN_SRC_ONLY, mode);
+
+	regmap_update_bits(qcom_usb->regmap,
+			   qcom_usb->base + TYPEC_VCONN_CONTROL,
+			   VCONN_EN_SRC | VCONN_EN_VAL, VCONN_EN_SRC);
+	regmap_update_bits(qcom_usb->regmap,
+			   qcom_usb->base + TYPEC_EXIT_STATE_CFG,
+			   SEL_SRC_UPPER_REF, SEL_SRC_UPPER_REF);
+}
+
+static int qcom_pmic_typec_probe(struct platform_device *pdev)
+{
+	struct qcom_pmic_typec *qcom_usb;
+	struct device *dev = &pdev->dev;
+	struct fwnode_handle *fwnode;
+	struct typec_capability cap;
+	const char *buf;
+	int ret, irq, role;
+	u32 reg;
+
+	ret = device_property_read_u32(dev, "reg", &reg);
+	if (ret < 0) {
+		dev_err(dev, "missing base address\n");
+		return ret;
+	}
+
+	qcom_usb = devm_kzalloc(dev, sizeof(*qcom_usb), GFP_KERNEL);
+	if (!qcom_usb)
+		return -ENOMEM;
+
+	qcom_usb->dev = dev;
+	qcom_usb->base = reg;
+
+	qcom_usb->regmap = dev_get_regmap(dev->parent, NULL);
+	if (!qcom_usb->regmap) {
+		dev_err(dev, "Failed to get regmap\n");
+		return -EINVAL;
+	}
+
+	qcom_usb->vbus_reg = devm_regulator_get(qcom_usb->dev, "usb_vbus");
+	if (IS_ERR(qcom_usb->vbus_reg))
+		return PTR_ERR(qcom_usb->vbus_reg);
+
+	fwnode = device_get_named_child_node(dev, "connector");
+	if (!fwnode)
+		return -EINVAL;
+
+	ret = fwnode_property_read_string(fwnode, "power-role", &buf);
+	if (!ret) {
+		role = typec_find_port_power_role(buf);
+		if (role < 0)
+			role = TYPEC_PORT_SNK;
+	} else {
+		role = TYPEC_PORT_SNK;
+	}
+	cap.type = role;
+
+	ret = fwnode_property_read_string(fwnode, "data-role", &buf);
+	if (!ret) {
+		role = typec_find_port_data_role(buf);
+		if (role < 0)
+			role = TYPEC_PORT_UFP;
+	} else {
+		role = TYPEC_PORT_UFP;
+	}
+	cap.data = role;
+
+	cap.prefer_role = TYPEC_NO_PREFERRED_ROLE;
+	cap.fwnode = fwnode;
+	qcom_usb->port = typec_register_port(dev, &cap);
+	if (IS_ERR(qcom_usb->port)) {
+		ret = PTR_ERR(qcom_usb->port);
+		dev_err(dev, "Failed to register type c port %d\n", ret);
+		goto err_put_node;
+	}
+	fwnode_handle_put(fwnode);
+
+	qcom_usb->role_sw = fwnode_usb_role_switch_get(dev_fwnode(qcom_usb->dev));
+	if (IS_ERR(qcom_usb->role_sw)) {
+		if (PTR_ERR(qcom_usb->role_sw) != -EPROBE_DEFER)
+			dev_err(dev, "failed to get role switch\n");
+		ret = PTR_ERR(qcom_usb->role_sw);
+		goto err_typec_port;
+	}
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		goto err_usb_role_sw;
+
+	ret = devm_request_threaded_irq(qcom_usb->dev, irq, NULL,
+					qcom_pmic_typec_interrupt, IRQF_ONESHOT,
+					"qcom-pmic-typec", qcom_usb);
+	if (ret) {
+		dev_err(&pdev->dev, "Could not request IRQ\n");
+		goto err_usb_role_sw;
+	}
+
+	platform_set_drvdata(pdev, qcom_usb);
+	qcom_pmic_typec_typec_hw_init(qcom_usb, cap.type);
+	qcom_pmic_typec_check_connection(qcom_usb);
+
+	return 0;
+
+err_usb_role_sw:
+	usb_role_switch_put(qcom_usb->role_sw);
+err_typec_port:
+	typec_unregister_port(qcom_usb->port);
+err_put_node:
+	fwnode_handle_put(fwnode);
+
+	return ret;
+}
+
+static int qcom_pmic_typec_remove(struct platform_device *pdev)
+{
+	struct qcom_pmic_typec *qcom_usb = platform_get_drvdata(pdev);
+
+	usb_role_switch_set_role(qcom_usb->role_sw, USB_ROLE_NONE);
+	qcom_pmic_typec_enable_vbus_regulator(qcom_usb, 0);
+
+	typec_unregister_port(qcom_usb->port);
+	usb_role_switch_put(qcom_usb->role_sw);
+
+	return 0;
+}
+
+static const struct of_device_id qcom_pmic_typec_table[] = {
+	{ .compatible = "qcom,pm8150b-usb-typec" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, qcom_pmic_typec_table);
+
+static struct platform_driver qcom_pmic_typec = {
+	.driver = {
+		.name = "qcom,pmic-typec",
+		.of_match_table = qcom_pmic_typec_table,
+	},
+	.probe = qcom_pmic_typec_probe,
+	.remove = qcom_pmic_typec_remove,
+};
+module_platform_driver(qcom_pmic_typec);
+
+MODULE_DESCRIPTION("QCOM PMIC USB type C driver");
+MODULE_LICENSE("GPL v2");
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

[PATCH v10 2/4] dt-bindings: usb: Add Qualcomm PMIC type C controller dt-binding

[Wesley Cheng]

Introduce the dt-binding for enabling USB type C orientation and role
detection using the PM8150B.  The driver will be responsible for receiving
the interrupt at a state change on the CC lines, reading the
orientation/role, and communicating this information to the remote
clients, which can include a role switch node and a type C switch.

Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
---
 .../bindings/usb/qcom,pmic-typec.yaml         | 115 ++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml

diff --git a/Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml b/Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml
new file mode 100644
index 000000000000..40e0a296f922
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml
@@ -0,0 +1,115 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/usb/qcom,pmic-typec.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Qualcomm PMIC based USB type C Detection Driver
+
+maintainers:
+  - Wesley Cheng <wcheng@codeaurora.org>
+
+description: |
+  Qualcomm PMIC Type C Detect
+
+properties:
+  compatible:
+    enum:
+      - qcom,pm8150b-usb-typec
+
+  reg:
+    maxItems: 1
+    description: Type C base address
+
+  interrupts:
+    maxItems: 1
+    description: CC change interrupt from PMIC
+
+  port:
+    description: Remote endpoint connection to the DRD switch
+    type: object
+
+    properties:
+      endpoint:
+        description: Connection to the DRD switch being used
+        type: object
+
+  connector:
+    $ref: /connector/usb-connector.yaml#
+    description: Connector type for remote endpoints
+    type: object
+
+    properties:
+      compatible:
+        enum:
+          - usb-c-connector
+
+      power-role: true
+      data-role: true
+
+      ports:
+        description: Remote endpoint connections for type C paths
+        type: object
+
+        properties:
+          port@1:
+            description: Remote endpoints for the Super Speed path
+            type: object
+
+            properties:
+              endpoint:
+                description: Connection to USB type C mux node
+                type: object
+
+    required:
+      - compatible
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - connector
+  - port
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    pm8150b {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        pm8150b_typec: usb-typec@1500 {
+            compatible = "qcom,pm8150b-usb-typec";
+            reg = <0x1500>;
+            interrupts = <0x2 0x15 0x5 IRQ_TYPE_EDGE_RISING>;
+
+            port {
+                usb3_role: endpoint {
+                    remote-endpoint = <&dwc3_drd_switch>;
+                };
+            };
+
+            connector {
+                compatible = "usb-c-connector";
+                power-role = "dual";
+                data-role = "dual";
+                ports {
+                    #address-cells = <1>;
+                    #size-cells = <0>;
+                    port@0 {
+                        reg = <0>;
+                    };
+                    port@1 {
+                        reg = <1>;
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                        usb3_data_ss: endpoint {
+                            remote-endpoint = <&qmp_ss_mux>;
+                        };
+                    };
+                };
+            };
+        };
+    };
+...
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

[PATCH v10 3/4] arm64: boot: dts: qcom: pm8150b: Add node for USB type C block

[Wesley Cheng]

The PM8150B has a dedicated USB type C block, which can be used for type C
orientation and role detection.  Create the reference node to this type C
block for further use.

Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---
 arch/arm64/boot/dts/qcom/pm8150b.dtsi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/pm8150b.dtsi b/arch/arm64/boot/dts/qcom/pm8150b.dtsi
index e112e8876db6..2bf385f5a55a 100644
--- a/arch/arm64/boot/dts/qcom/pm8150b.dtsi
+++ b/arch/arm64/boot/dts/qcom/pm8150b.dtsi
@@ -53,6 +53,13 @@ power-on@800 {
 			status = "disabled";
 		};
 
+		pm8150b_typec: usb-typec@1500 {
+			compatible = "qcom,pm8150b-usb-typec";
+			status = "disabled";
+			reg = <0x1500>;
+			interrupts = <0x2 0x15 0x5 IRQ_TYPE_EDGE_RISING>;
+		};
+
 		pm8150b_temp: temp-alarm@2400 {
 			compatible = "qcom,spmi-temp-alarm";
 			reg = <0x2400>;
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

[PATCH v10 4/4] arm64: boot: dts: qcom: pm8150b: Add DTS node for PMIC VBUS booster

[Wesley Cheng]

Add the required DTS node for the USB VBUS output regulator, which is
available on PM8150B.  This will provide the VBUS source to connected
peripherals.

Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
---
 arch/arm64/boot/dts/qcom/pm8150b.dtsi   | 6 ++++++
 arch/arm64/boot/dts/qcom/sm8150-mtp.dts | 4 ++++
 2 files changed, 10 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/pm8150b.dtsi b/arch/arm64/boot/dts/qcom/pm8150b.dtsi
index 2bf385f5a55a..49ea597cc0c5 100644
--- a/arch/arm64/boot/dts/qcom/pm8150b.dtsi
+++ b/arch/arm64/boot/dts/qcom/pm8150b.dtsi
@@ -53,6 +53,12 @@ power-on@800 {
 			status = "disabled";
 		};
 
+		pm8150b_vbus: regulator@1100 {
+			compatible = "qcom,pm8150b-vbus-reg";
+			status = "disabled";
+			reg = <0x1100>;
+		};
+
 		pm8150b_typec: usb-typec@1500 {
 			compatible = "qcom,pm8150b-usb-typec";
 			status = "disabled";
diff --git a/arch/arm64/boot/dts/qcom/sm8150-mtp.dts b/arch/arm64/boot/dts/qcom/sm8150-mtp.dts
index 6c6325c3af59..ba3b5b802954 100644
--- a/arch/arm64/boot/dts/qcom/sm8150-mtp.dts
+++ b/arch/arm64/boot/dts/qcom/sm8150-mtp.dts
@@ -409,6 +409,10 @@ &ufs_mem_phy {
 	vdda-pll-max-microamp = <19000>;
 };
 
+&pm8150b_vbus {
+	status = "okay";
+};
+
 &usb_1_hsphy {
 	status = "okay";
 	vdda-pll-supply = <&vdd_usb_hs_core>;
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

Re: [PATCH v10 2/4] dt-bindings: usb: Add Qualcomm PMIC type C controller dt-binding

[Rob Herring]

On Thu, Oct 08, 2020 at 04:59:32PM -0700, Wesley Cheng wrote:
> Introduce the dt-binding for enabling USB type C orientation and role
> detection using the PM8150B.  The driver will be responsible for receiving
> the interrupt at a state change on the CC lines, reading the
> orientation/role, and communicating this information to the remote
> clients, which can include a role switch node and a type C switch.
> 
> Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
> ---
>  .../bindings/usb/qcom,pmic-typec.yaml         | 115 ++++++++++++++++++
>  1 file changed, 115 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml
> 
> diff --git a/Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml b/Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml
> new file mode 100644
> index 000000000000..40e0a296f922
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml
> @@ -0,0 +1,115 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/usb/qcom,pmic-typec.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: Qualcomm PMIC based USB type C Detection Driver
> +
> +maintainers:
> +  - Wesley Cheng <wcheng@codeaurora.org>
> +
> +description: |
> +  Qualcomm PMIC Type C Detect
> +
> +properties:
> +  compatible:
> +    enum:
> +      - qcom,pm8150b-usb-typec
> +
> +  reg:
> +    maxItems: 1
> +    description: Type C base address
> +
> +  interrupts:
> +    maxItems: 1
> +    description: CC change interrupt from PMIC
> +
> +  port:
> +    description: Remote endpoint connection to the DRD switch
> +    type: object

I don't understand what this is supposed to be. You'll have to expand 
the example or provide a block diagram of what the connections/routing 
looks like.

> +
> +    properties:
> +      endpoint:
> +        description: Connection to the DRD switch being used
> +        type: object
> +
> +  connector:
> +    $ref: /connector/usb-connector.yaml#
> +    description: Connector type for remote endpoints
> +    type: object
> +
> +    properties:
> +      compatible:
> +        enum:
> +          - usb-c-connector
> +
> +      power-role: true
> +      data-role: true
> +
> +      ports:
> +        description: Remote endpoint connections for type C paths
> +        type: object
> +
> +        properties:
> +          port@1:
> +            description: Remote endpoints for the Super Speed path
> +            type: object
> +
> +            properties:
> +              endpoint:
> +                description: Connection to USB type C mux node
> +                type: object
> +
> +    required:
> +      - compatible
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - connector
> +  - port
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    pm8150b {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +        pm8150b_typec: usb-typec@1500 {
> +            compatible = "qcom,pm8150b-usb-typec";
> +            reg = <0x1500>;
> +            interrupts = <0x2 0x15 0x5 IRQ_TYPE_EDGE_RISING>;
> +
> +            port {
> +                usb3_role: endpoint {
> +                    remote-endpoint = <&dwc3_drd_switch>;
> +                };
> +            };
> +
> +            connector {
> +                compatible = "usb-c-connector";
> +                power-role = "dual";
> +                data-role = "dual";
> +                ports {
> +                    #address-cells = <1>;
> +                    #size-cells = <0>;
> +                    port@0 {
> +                        reg = <0>;
> +                    };
> +                    port@1 {
> +                        reg = <1>;
> +                        #address-cells = <1>;
> +                        #size-cells = <0>;
> +                        usb3_data_ss: endpoint {
> +                            remote-endpoint = <&qmp_ss_mux>;
> +                        };
> +                    };
> +                };
> +            };
> +        };
> +    };
> +...
> -- 
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
> 

Re: [PATCH v10 4/4] arm64: boot: dts: qcom: pm8150b: Add DTS node for PMIC VBUS booster

[Rob Herring]

On Thu, Oct 08, 2020 at 04:59:34PM -0700, Wesley Cheng wrote:
> Add the required DTS node for the USB VBUS output regulator, which is
> available on PM8150B.  This will provide the VBUS source to connected
> peripherals.
> 
> Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
> ---
>  arch/arm64/boot/dts/qcom/pm8150b.dtsi   | 6 ++++++
>  arch/arm64/boot/dts/qcom/sm8150-mtp.dts | 4 ++++
>  2 files changed, 10 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/pm8150b.dtsi b/arch/arm64/boot/dts/qcom/pm8150b.dtsi
> index 2bf385f5a55a..49ea597cc0c5 100644
> --- a/arch/arm64/boot/dts/qcom/pm8150b.dtsi
> +++ b/arch/arm64/boot/dts/qcom/pm8150b.dtsi
> @@ -53,6 +53,12 @@ power-on@800 {
>  			status = "disabled";
>  		};
>  
> +		pm8150b_vbus: regulator@1100 {
> +			compatible = "qcom,pm8150b-vbus-reg";
> +			status = "disabled";
> +			reg = <0x1100>;
> +		};
> +
>  		pm8150b_typec: usb-typec@1500 {
>  			compatible = "qcom,pm8150b-usb-typec";
>  			status = "disabled";
> diff --git a/arch/arm64/boot/dts/qcom/sm8150-mtp.dts b/arch/arm64/boot/dts/qcom/sm8150-mtp.dts
> index 6c6325c3af59..ba3b5b802954 100644
> --- a/arch/arm64/boot/dts/qcom/sm8150-mtp.dts
> +++ b/arch/arm64/boot/dts/qcom/sm8150-mtp.dts
> @@ -409,6 +409,10 @@ &ufs_mem_phy {
>  	vdda-pll-max-microamp = <19000>;
>  };
>  
> +&pm8150b_vbus {
> +	status = "okay";
> +};

Why aren't you enabling the TypeC node and providing a complete example?

> +
>  &usb_1_hsphy {
>  	status = "okay";
>  	vdda-pll-supply = <&vdd_usb_hs_core>;
> -- 
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
> 

Re: [PATCH v10 2/4] dt-bindings: usb: Add Qualcomm PMIC type C controller dt-binding

[Wesley Cheng]

On 10/13/2020 8:00 AM, Rob Herring wrote:
> On Thu, Oct 08, 2020 at 04:59:32PM -0700, Wesley Cheng wrote:
>> Introduce the dt-binding for enabling USB type C orientation and role
>> detection using the PM8150B.  The driver will be responsible for receiving
>> the interrupt at a state change on the CC lines, reading the
>> orientation/role, and communicating this information to the remote
>> clients, which can include a role switch node and a type C switch.
>>
>> Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
>> ---
>>  .../bindings/usb/qcom,pmic-typec.yaml         | 115 ++++++++++++++++++
>>  1 file changed, 115 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml b/Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml
>> new file mode 100644
>> index 000000000000..40e0a296f922
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml
>> @@ -0,0 +1,115 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: "http://devicetree.org/schemas/usb/qcom,pmic-typec.yaml#"
>> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
>> +
>> +title: Qualcomm PMIC based USB type C Detection Driver
>> +
>> +maintainers:
>> +  - Wesley Cheng <wcheng@codeaurora.org>
>> +
>> +description: |
>> +  Qualcomm PMIC Type C Detect
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - qcom,pm8150b-usb-typec
>> +
>> +  reg:
>> +    maxItems: 1
>> +    description: Type C base address
>> +
>> +  interrupts:
>> +    maxItems: 1
>> +    description: CC change interrupt from PMIC
>> +
>> +  port:
>> +    description: Remote endpoint connection to the DRD switch
>> +    type: object
> 
> I don't understand what this is supposed to be. You'll have to expand 
> the example or provide a block diagram of what the connections/routing 
> looks like.
> 

Hi Rob,

The "port" node is going to be the connection to the usb role switch
device, which will be listening for the USB type C port change events.
(i.e handling USB role events, etc...)  In previous patches, this was
part of the connector node, which may not have made much sense, as the
connector model is used to describe the HW connections within a design.
 The role switch endpoint is more of a SW interaction between drivers,
thus the motivation to remove it from the connector node.

I think the current usb-connector design is OK as it is, since the only
component essentially involved in the SS path is the SS MUX that we've
been discussing, and this is true among designs that are supporting SSUSB.


Thanks

Regards,
Wesley Cheng

-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

Re: [PATCH v10 4/4] arm64: boot: dts: qcom: pm8150b: Add DTS node for PMIC VBUS booster

[Wesley Cheng]

On 10/13/2020 8:03 AM, Rob Herring wrote:
> On Thu, Oct 08, 2020 at 04:59:34PM -0700, Wesley Cheng wrote:
>> Add the required DTS node for the USB VBUS output regulator, which is
>> available on PM8150B.  This will provide the VBUS source to connected
>> peripherals.
>>
>> Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
>> ---
>>  arch/arm64/boot/dts/qcom/pm8150b.dtsi   | 6 ++++++
>>  arch/arm64/boot/dts/qcom/sm8150-mtp.dts | 4 ++++
>>  2 files changed, 10 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/pm8150b.dtsi b/arch/arm64/boot/dts/qcom/pm8150b.dtsi
>> index 2bf385f5a55a..49ea597cc0c5 100644
>> --- a/arch/arm64/boot/dts/qcom/pm8150b.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/pm8150b.dtsi
>> @@ -53,6 +53,12 @@ power-on@800 {
>>  			status = "disabled";
>>  		};
>>  
>> +		pm8150b_vbus: regulator@1100 {
>> +			compatible = "qcom,pm8150b-vbus-reg";
>> +			status = "disabled";
>> +			reg = <0x1100>;
>> +		};
>> +
>>  		pm8150b_typec: usb-typec@1500 {
>>  			compatible = "qcom,pm8150b-usb-typec";
>>  			status = "disabled";
>> diff --git a/arch/arm64/boot/dts/qcom/sm8150-mtp.dts b/arch/arm64/boot/dts/qcom/sm8150-mtp.dts
>> index 6c6325c3af59..ba3b5b802954 100644
>> --- a/arch/arm64/boot/dts/qcom/sm8150-mtp.dts
>> +++ b/arch/arm64/boot/dts/qcom/sm8150-mtp.dts
>> @@ -409,6 +409,10 @@ &ufs_mem_phy {
>>  	vdda-pll-max-microamp = <19000>;
>>  };
>>  
>> +&pm8150b_vbus {
>> +	status = "okay";
>> +};
> 
> Why aren't you enabling the TypeC node and providing a complete example?
> 

Hi Rob,

I have another patch series which enables the type C node and adds QMP
PHY driver changes for setting the SS lane select MUX.

https://patchwork.kernel.org/project/linux-arm-msm/list/?series=361971

Just wanted to work on getting a PMIC based type C driver out there,
which can be utilized in designs where the QMP PHY lane select mux is
not going to be used. (ie using a FUSB340 as a lane select mux instead
of the QMP PHY mux)

Thanks

Regards,
Wesley Cheng

-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

Re: [PATCH v10 2/4] dt-bindings: usb: Add Qualcomm PMIC type C controller dt-binding

[Konrad Dybcio]

On 9.10.2020 01:59, Wesley Cheng wrote:
> Introduce the dt-binding for enabling USB type C orientation and role
> detection using the PM8150B.  The driver will be responsible for receiving
> the interrupt at a state change on the CC lines, reading the
> orientation/role, and communicating this information to the remote
> clients, which can include a role switch node and a type C switch.
> 
> Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
> ---
Hi all, sorry for playing archeology, but it looks like the driver
was merged 2 years ago and this binding has been omitted..

Konrad
>  .../bindings/usb/qcom,pmic-typec.yaml         | 115 ++++++++++++++++++
>  1 file changed, 115 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml
> 
> diff --git a/Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml b/Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml
> new file mode 100644
> index 000000000000..40e0a296f922
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml
> @@ -0,0 +1,115 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/usb/qcom,pmic-typec.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: Qualcomm PMIC based USB type C Detection Driver
> +
> +maintainers:
> +  - Wesley Cheng <wcheng@codeaurora.org>
> +
> +description: |
> +  Qualcomm PMIC Type C Detect
> +
> +properties:
> +  compatible:
> +    enum:
> +      - qcom,pm8150b-usb-typec
> +
> +  reg:
> +    maxItems: 1
> +    description: Type C base address
> +
> +  interrupts:
> +    maxItems: 1
> +    description: CC change interrupt from PMIC
> +
> +  port:
> +    description: Remote endpoint connection to the DRD switch
> +    type: object
> +
> +    properties:
> +      endpoint:
> +        description: Connection to the DRD switch being used
> +        type: object
> +
> +  connector:
> +    $ref: /connector/usb-connector.yaml#
> +    description: Connector type for remote endpoints
> +    type: object
> +
> +    properties:
> +      compatible:
> +        enum:
> +          - usb-c-connector
> +
> +      power-role: true
> +      data-role: true
> +
> +      ports:
> +        description: Remote endpoint connections for type C paths
> +        type: object
> +
> +        properties:
> +          port@1:
> +            description: Remote endpoints for the Super Speed path
> +            type: object
> +
> +            properties:
> +              endpoint:
> +                description: Connection to USB type C mux node
> +                type: object
> +
> +    required:
> +      - compatible
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - connector
> +  - port
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    pm8150b {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +        pm8150b_typec: usb-typec@1500 {
> +            compatible = "qcom,pm8150b-usb-typec";
> +            reg = <0x1500>;
> +            interrupts = <0x2 0x15 0x5 IRQ_TYPE_EDGE_RISING>;
> +
> +            port {
> +                usb3_role: endpoint {
> +                    remote-endpoint = <&dwc3_drd_switch>;
> +                };
> +            };
> +
> +            connector {
> +                compatible = "usb-c-connector";
> +                power-role = "dual";
> +                data-role = "dual";
> +                ports {
> +                    #address-cells = <1>;
> +                    #size-cells = <0>;
> +                    port@0 {
> +                        reg = <0>;
> +                    };
> +                    port@1 {
> +                        reg = <1>;
> +                        #address-cells = <1>;
> +                        #size-cells = <0>;
> +                        usb3_data_ss: endpoint {
> +                            remote-endpoint = <&qmp_ss_mux>;
> +                        };
> +                    };
> +                };
> +            };
> +        };
> +    };
> +...