Commit 03239981 authored by Prashant Malani's avatar Prashant Malani Committed by Greg Kroah-Hartman
Browse files

usb: typec: Add partner PD object wrapper 



Some port drivers may want to set a Type-C partner as a parent for a
USB Power Delivery object, but the Type-C partner struct isn't exposed
outside of the Type-C class driver. Add a wrapper to
usb_power_delivery_register() which sets the provided Type-C partner
as a parent to the USB PD object. This helps to avoid exposing the
Type-C partner's device struct unnecessarily.

Cc: Benson Leung <bleung@chromium.org>
Suggested-by: default avatarHeikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: default avatarHeikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: default avatarPrashant Malani <pmalani@chromium.org>
Link: https://lore.kernel.org/r/20221122220538.2991775-2-pmalani@chromium.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 03a88b0b

drivers/usb/typec/class.c

+19 −0
Original line number Diff line number Diff line
@@ -821,6 +821,25 @@ void typec_partner_set_svdm_version(struct typec_partner *partner, 
}

EXPORT_SYMBOL_GPL(typec_partner_set_svdm_version);



/**

 * typec_partner_usb_power_delivery_register - Register Type-C partner USB Power Delivery Support

 * @partner: Type-C partner device.

 * @desc: Description of the USB PD contract.

 *

 * This routine is a wrapper around usb_power_delivery_register(). It registers

 * USB Power Delivery Capabilities for a Type-C partner device. Specifically,

 * it sets the Type-C partner device as a parent for the resulting USB Power Delivery object.

 *

 * Returns handle to struct usb_power_delivery or ERR_PTR.

 */

struct usb_power_delivery *

typec_partner_usb_power_delivery_register(struct typec_partner *partner,

					  struct usb_power_delivery_desc *desc)

{

	return usb_power_delivery_register(&partner->dev, desc);

}

EXPORT_SYMBOL_GPL(typec_partner_usb_power_delivery_register);



/**

 * typec_register_partner - Register a USB Type-C Partner

 * @port: The USB Type-C Port the partner is connected to

include/linux/usb/typec.h

+4 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ struct fwnode_handle; 
struct device;



struct usb_power_delivery;

struct usb_power_delivery_desc;



enum typec_port_type {

	TYPEC_PORT_SRC,
@@ -327,6 +328,9 @@ void typec_partner_set_svdm_version(struct typec_partner *partner, 
				    enum usb_pd_svdm_ver svdm_version);

int typec_get_negotiated_svdm_version(struct typec_port *port);



struct usb_power_delivery *typec_partner_usb_power_delivery_register(struct typec_partner *partner,

							struct usb_power_delivery_desc *desc);



int typec_port_set_usb_power_delivery(struct typec_port *port, struct usb_power_delivery *pd);

int typec_partner_set_usb_power_delivery(struct typec_partner *partner,

					 struct usb_power_delivery *pd);