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Commit f0690a25 authored by Guenter Roeck's avatar Guenter Roeck Committed by Greg Kroah-Hartman
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staging: typec: USB Type-C Port Manager (tcpm) 



This driver implements the USB Type-C Power Delivery state machine
for both source and sink ports. Alternate mode support is not
fully implemented.

The driver attaches to the USB Type-C class code implemented in
the following patches.

	usb: typec: add driver for Intel Whiskey Cove PMIC USB Type-C PHY
	usb: USB Type-C connector class

This driver only implements the state machine. Lower level drivers are
responsible for
- Reporting VBUS status and activating VBUS
- Setting CC lines and providing CC line status
- Setting line polarity
- Activating and deactivating VCONN
- Setting the current limit
- Activating and deactivating PD message transfers
- Sending and receiving PD messages

The driver provides both a functional API as well as callbacks for
lower level drivers.

Signed-off-by: default avatarGuenter Roeck <groeck@chromium.org>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d852ed98

drivers/staging/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -104,4 +104,6 @@ source "drivers/staging/vc04_services/Kconfig" 


source "drivers/staging/bcm2835-audio/Kconfig"



source "drivers/staging/typec/Kconfig"



endif # STAGING

drivers/staging/Makefile

+1 −1
Original line number Diff line number Diff line 
# Makefile for staging directory



obj-y				+= media/

obj-y				+= typec/

obj-$(CONFIG_PRISM2_USB)	+= wlan-ng/

obj-$(CONFIG_COMEDI)		+= comedi/

obj-$(CONFIG_FB_OLPC_DCON)	+= olpc_dcon/
@@ -41,4 +42,3 @@ obj-$(CONFIG_KS7010) += ks7010/ 
obj-$(CONFIG_GREYBUS)		+= greybus/

obj-$(CONFIG_BCM2835_VCHIQ)	+= vc04_services/

obj-$(CONFIG_SND_BCM2835)	+= bcm2835-audio/

drivers/staging/typec/Kconfig

0 → 100644
+11 −0
Original line number Diff line number Diff line 
menu "USB Power Delivery and Type-C drivers"



config TYPEC_TCPM

	tristate "USB Type-C Port Controller Manager"

	depends on USB

	select TYPEC

	help

	  The Type-C Port Controller Manager provides a USB PD and USB Type-C

	  state machine for use with Type-C Port Controllers.



endmenu

drivers/staging/typec/Makefile

0 → 100644
+1 −0
Original line number Diff line number Diff line 
obj-$(CONFIG_TYPEC_TCPM)	+= tcpm.o

drivers/staging/typec/TODO

0 → 100644
+12 −0
Original line number Diff line number Diff line 
tcpm:

- Add documentation (at the very least for the API to low level drivers)

- Split PD code into separate file

- Check if it makes sense to use tracepoints instead of debugfs for debug logs

- Implement Alternate Mode handling

- Address "#if 0" code if not addressed with the above

- Validate all comments marked with "XXX"; either address or remove comments

- Add support for USB PD 3.0. While not mandatory, at least fast role swap

  as well as authentication support would be very desirable.



Please send patches to Guenter Roeck <linux@roeck-us.net> and copy

Heikki Krogerus <heikki.krogerus@linux.intel.com>.