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Commit f4baeb13 authored by Jack Pham's avatar Jack Pham
Browse files

usb: pd: add snapshot of qpnp-pdphy and policy_engine drivers 



The qpnp-pdphy driver provides support for the PD PHY peripheral
found on Qualcomm Technologies, Inc. PMICs. This along with
the policy engine provides a protocol stack that supports
USB Power Delivery communication over a Type-C port.

This snapshot is taken as of msm-4.4
commit 312981bf914f ("ARM: dts: msm: Add sdhc ice device node for
sdm660").

Change-Id: I0a34076dee8476494dfccfe6fc807247caab8927
Signed-off-by: default avatarJack Pham <jackp@codeaurora.org>
parent 6d3ad968

Documentation/devicetree/bindings/usb/qpnp-pdphy.txt

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Qualcomm Technologies, Inc. QPNP PD PHY - USB Power Delivery Physical layer



Required properties:

- compatible:		Must be "qcom,qpnp-pdphy"

- reg:			The base address for this peripheral

- vdd-pdphy-supply:	phandle to the VDD supply regulator node

- interrupts:		Specifies the interrupt associated with the peripheral.

- interrupt-names:	Specifies the interrupt names for the peripheral. Every

			available interrupt needs to have an associated name

			with it to indentify its purpose.



			The following interrupts are required:



			0: sig-tx

				Triggers when a signal (HardReset or CableReset)

				has been sent.

			1: sig-rx

				Triggers when a signal has been received.

			2: msg-tx

				Triggers when a message has been sent and the

				related GoodCRC has been received.

			3: msg-rx

				Triggers when a message has been received and

				the related GoodCRC was sent successfully.

			4: msg-tx-failed

				Triggers when a message failed all its

				transmission attempts, either due to a non-idle

				bus or missing GoodCRC reply.

			5: msg-tx-discarded

				Triggers when a message is received while a

				transmission request was in place. The request

				itself is discarded.

			6: msg-rx-discarded

				Triggers when a message was received but had to

				be discarded due to the RX buffer still in use

				by SW.



Optional properties:

- vbus-supply:		Regulator that enables VBUS source output

- vconn-supply:		Regulator that enables VCONN source output. This will

			be supplied on the USB CC line that is not used for

			communication when Ra resistance is detected.

- qcom,vconn-uses-external-source: Indicates whether VCONN supply is sourced

			from an external regulator. If omitted, then it is

			assumed it is connected to VBUS.



Example:

	qcom,qpnp-pdphy@1700 {

		compatible = "qcom,qpnp-pdphy";

		reg = <0x1700 0x100>;

		vdd-pdphy-supply = <&pm8998_l24>;

		interrupts = <0x2 0x17 0x0 IRQ_TYPE_EDGE_RISING>,

			     <0x2 0x17 0x1 IRQ_TYPE_EDGE_RISING>,

			     <0x2 0x17 0x2 IRQ_TYPE_EDGE_RISING>,

			     <0x2 0x17 0x3 IRQ_TYPE_EDGE_RISING>,

			     <0x2 0x17 0x4 IRQ_TYPE_EDGE_RISING>,

			     <0x2 0x17 0x5 IRQ_TYPE_EDGE_RISING>,

			     <0x2 0x17 0x6 IRQ_TYPE_EDGE_RISING>;



		interrupt-names = "sig-tx",

				  "sig-rx",

				  "msg-tx",

				  "msg-rx",

				  "msg-tx-failed",

				  "msg-tx-discarded",

				  "msg-rx-discarded";

	};

drivers/usb/Kconfig

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@@ -105,6 +105,8 @@ source "drivers/usb/chipidea/Kconfig" 


source "drivers/usb/isp1760/Kconfig"



source "drivers/usb/pd/Kconfig"



comment "USB port drivers"



if USB

drivers/usb/Makefile

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@@ -61,3 +61,5 @@ obj-$(CONFIG_USB_GADGET) += gadget/ 
obj-$(CONFIG_USB_COMMON)	+= common/



obj-$(CONFIG_USBIP_CORE)	+= usbip/



obj-$(CONFIG_USB_PD)            += pd/

drivers/usb/pd/Kconfig

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#

# USB Power Delivery driver configuration

#

menu "USB Power Delivery"



config USB_PD

	def_bool n



config USB_PD_POLICY

	tristate "USB Power Delivery Protocol and Policy Engine"

	depends on EXTCON

	depends on DUAL_ROLE_USB_INTF

	select USB_PD

	help

          Say Y here to enable USB PD protocol and policy engine.

	  This driver provides a class that implements the upper

	  layers of the USB Power Delivery stack. It requires a

	  PD PHY driver in order to transmit and receive PD

	  messages on its behalf.



config QPNP_USB_PDPHY

	tristate "QPNP USB Power Delivery PHY"

	depends on SPMI

	help

          Say Y here to enable QPNP USB PD PHY peripheral driver

	  which communicates over the SPMI bus. The is used to handle

	  the PHY layer communication of the Power Delivery stack.



endmenu

drivers/usb/pd/Makefile

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#

# Makefile for USB Power Delivery drivers

#



obj-$(CONFIG_USB_PD_POLICY)	+= policy_engine.o

obj-$(CONFIG_QPNP_USB_PDPHY)	+= qpnp-pdphy.o