usb: typec: qcom: Add Qualcomm PMIC Type-C driver

This commit adds a QCOM PMIC TCPM driver with an initial pm8150b
block.

The driver is layered as follows:

qcom_pmic_typec.c : Responsible for registering with TCPM and arbitrates
                    access to the Type-C and PDPHY hardware blocks in one
                    place.  This presents a single TCPM device to device to
                    the Linux TCPM layer.

qcom_pmic_typec_pdphy.c: Responsible for interfacing with the PDPHY hardware and
                         processing power-delivery related calls from TCPM.
                         This hardware binding can be extended to
                         facilitate similar hardware in different PMICs.

qcom_pmic_typec_port.c: Responsible for notifying and processing Type-C
                        related calls from TCPM. Similar to the pdphy this
                        layer can be extended to handle the specifics of
                        different Qualcomm PMIC Type-C port managers.

This code provides all of the same functionality as the existing
qcom typec driver plus power-delivery as well.

As a result commit 6c8cf36 ("usb: typec: Add QCOM PMIC typec detection
driver") can be deleted entirely.

References code from Jonathan Marek, Jack Pham, Wesley Cheng, Hemant Kumar,
Guru Das Srinagesh and Ashay Jaiswal.

Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Caleb Connolly <caleb.connolly@linaro.org>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Link: https://lore.kernel.org/r/20230508142308.1656410-8-bryan.odonoghue@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

MAINTAINERS

@@ -17533,6 +17533,16 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/thermal/qcom-tsens.yaml
 F:	drivers/thermal/qcom/
 
+QUALCOMM TYPEC PORT MANAGER DRIVER
+M:	Bryan O'Donoghue <bryan.odonoghue@linaro.org>
+L:	linux-arm-msm@vger.kernel.org
+L:	linux-usb@vger.kernel.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/usb/qcom,pmic-*.yaml
+F:	drivers/usb/typec/tcpm/qcom/
+F:	include/dt-bindings/usb/typec/qcom,pmic-pdphy.h
+F:	include/dt-bindings/usb/typec/qcom,pmic-typec.h
+
 QUALCOMM VENUS VIDEO ACCELERATOR DRIVER
 M:	Stanimir Varbanov <stanimir.k.varbanov@gmail.com>
 M:	Vikash Garodia <quic_vgarodia@quicinc.com>

drivers/usb/typec/Kconfig

@@ -100,19 +100,6 @@ config TYPEC_STUSB160X
 	  If you choose to build this driver as a dynamically linked module, the
 	  module will be called stusb160x.ko.
 
-config TYPEC_QCOM_PMIC
-	tristate "Qualcomm PMIC USB Type-C driver"
-	depends on ARCH_QCOM || COMPILE_TEST
-	depends on USB_ROLE_SWITCH || !USB_ROLE_SWITCH
-	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.
-
 config TYPEC_WUSB3801
 	tristate "Willsemi WUSB3801 Type-C port controller driver"
 	depends on I2C

drivers/usb/typec/Makefile

@@ -8,7 +8,6 @@ obj-$(CONFIG_TYPEC_UCSI)	+= ucsi/
 obj-$(CONFIG_TYPEC_TPS6598X)	+= tipd/
 obj-$(CONFIG_TYPEC_ANX7411)	+= anx7411.o
 obj-$(CONFIG_TYPEC_HD3SS3220)	+= hd3ss3220.o
-obj-$(CONFIG_TYPEC_QCOM_PMIC)	+= qcom-pmic-typec.o
 obj-$(CONFIG_TYPEC_STUSB160X) 	+= stusb160x.o
 obj-$(CONFIG_TYPEC_RT1719)	+= rt1719.o
 obj-$(CONFIG_TYPEC_WUSB3801)	+= wusb3801.o

drivers/usb/typec/tcpm/Kconfig

@@ -76,4 +76,15 @@ config TYPEC_WCOVE
 	  To compile this driver as module, choose M here: the module will be
 	  called typec_wcove.ko
 
+config TYPEC_QCOM_PMIC
+	tristate "Qualcomm PMIC USB Type-C Port Controller Manager driver"
+	depends on ARCH_QCOM || COMPILE_TEST
+	help
+	  A Type-C port and Power Delivery driver which aggregates two
+	  discrete pieces of silicon in the PM8150b PMIC block: the
+	  Type-C port controller and the Power Delivery PHY.
+
+	  This driver enables Type-C role switching, orientation, Alternate
+	  mode and Power Delivery support both for VBUS and VCONN.
+
 endif # TYPEC_TCPM

drivers/usb/typec/tcpm/Makefile

@@ -9,3 +9,4 @@ obj-$(CONFIG_TYPEC_MT6360)		+= tcpci_mt6360.o
 obj-$(CONFIG_TYPEC_TCPCI_MT6370)	+= tcpci_mt6370.o
 obj-$(CONFIG_TYPEC_TCPCI_MAXIM)		+= tcpci_maxim.o
 tcpci_maxim-y				+= tcpci_maxim_core.o maxim_contaminant.o
+obj-$(CONFIG_TYPEC_QCOM_PMIC)		+= qcom/

drivers/usb/typec/tcpm/qcom/Makefile

@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+obj-$(CONFIG_TYPEC_QCOM_PMIC)		+= qcom_pmic_tcpm.o
+qcom_pmic_tcpm-y			+= qcom_pmic_typec.o \
+					   qcom_pmic_typec_port.o \
+					   qcom_pmic_typec_pdphy.o