usb: typec: add TUSB320xA driver

The TUSB320LA and TUSB320HA (or LAI, HAI) chips are I2C controlled
non-PD Type-C port controllers. They support detection of cable
orientation, port attachment state, and role, including Audio Accessory
and Debug Accessory modes. Add a typec class driver for this family.

Note that there already exists an extcon driver for the TUSB320 (a
slightly older revision that does not support setting role preference or
disabling the CC state machine). This driver is loosely based on that
one.

Signed-off-by: Alvin Šipraga <alsi@bang-olufsen.dk>

drivers/usb/typec/Kconfig

@@ -75,6 +75,18 @@ config TYPEC_HD3SS3220
 	  If you choose to build this driver as a dynamically linked module, the
 	  module will be called hd3ss3220.ko.
 
+config TYPEC_TUSB320XA
+	tristate "TI TUSB320xA Type-C DRP Port controller driver"
+	depends on USB_ROLE_SWITCH
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  Say Y or M here if your system has a TUSB320xA Type-C DRP port
+	  controller.
+
+	  If you choose to build this driver as a dynamically linked module, the
+	  module will be called tusb320xa.ko.
+
 config TYPEC_STUSB160X
 	tristate "STMicroelectronics STUSB160x Type-C controller driver"
 	depends on USB_ROLE_SWITCH || !USB_ROLE_SWITCH

drivers/usb/typec/Makefile

@@ -7,6 +7,7 @@ obj-$(CONFIG_TYPEC_TCPM)	+= tcpm/
 obj-$(CONFIG_TYPEC_UCSI)	+= ucsi/
 obj-$(CONFIG_TYPEC_TPS6598X)	+= tipd/
 obj-$(CONFIG_TYPEC_HD3SS3220)	+= hd3ss3220.o
+obj-$(CONFIG_TYPEC_TUSB320XA)	+= tusb320xa.o
 obj-$(CONFIG_TYPEC_QCOM_PMIC)	+= qcom-pmic-typec.o
 obj-$(CONFIG_TYPEC_STUSB160X) 	+= stusb160x.o
 obj-$(CONFIG_TYPEC_RT1719)	+= rt1719.o