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usb: typec: USB Power Delivery helpers for ports and partners

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All the USB Type-C Connector Class devices are protected, so
the drivers can not directly access them. This will adds a
few helpers that can be used to link the ports and partners
to the correct USB Power Delivery objects.

For ports a new optional sysfs attribute file is also added
that can be used to select the USB Power Delivery
capabilities that the port will advertise to the partner.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20220502132058.86236-3-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heikki Krogerus 2022-05-02 16:20:57 +03:00 • committed by Greg Kroah-Hartman
parent 662a60102c
commit a7cff92f06
4 changed files with 174 additions and 0 deletions
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13
include/linux/usb/typec.h
View file

@ -22,6 +22,8 @@ struct typec_altmode_ops;
struct fwnode_handle;
struct device;
struct usb_power_delivery;
enum typec_port_type {
TYPEC_PORT_SRC,
TYPEC_PORT_SNK,
@ -223,6 +225,8 @@ struct typec_partner_desc {
* @pr_set: Set Power Role
* @vconn_set: Source VCONN
* @port_type_set: Set port type
* @pd_get: Get available USB Power Delivery Capabilities.
* @pd_set: Set USB Power Delivery Capabilities.
*/
struct typec_operations {
int (*try_role)(struct typec_port *port, int role);
@ -231,6 +235,8 @@ struct typec_operations {
int (*vconn_set)(struct typec_port *port, enum typec_role role);
int (*port_type_set)(struct typec_port *port,
enum typec_port_type type);
struct usb_power_delivery **(*pd_get)(struct typec_port *port);
int (*pd_set)(struct typec_port *port, struct usb_power_delivery *pd);
};
enum usb_pd_svdm_ver {
@ -250,6 +256,7 @@ enum usb_pd_svdm_ver {
* @accessory: Supported Accessory Modes
* @fwnode: Optional fwnode of the port
* @driver_data: Private pointer for driver specific info
* @pd: Optional USB Power Delivery Support
* @ops: Port operations vector
*
* Static capabilities of a single USB Type-C port.
@ -267,6 +274,8 @@ struct typec_capability {
struct fwnode_handle *fwnode;
void *driver_data;
struct usb_power_delivery *pd;
const struct typec_operations *ops;
};
@ -318,4 +327,8 @@ 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);
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);
#endif /* __LINUX_USB_TYPEC_H */