/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __LINUX_USB_TYPEC_H
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#define __LINUX_USB_TYPEC_H
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#include <linux/types.h>
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/* USB Type-C Specification releases */
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#define USB_TYPEC_REV_1_0 0x100 /* 1.0 */
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#define USB_TYPEC_REV_1_1 0x110 /* 1.1 */
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#define USB_TYPEC_REV_1_2 0x120 /* 1.2 */
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struct typec_partner;
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struct typec_cable;
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struct typec_plug;
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struct typec_port;
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struct typec_altmode_ops;
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struct fwnode_handle;
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struct device;
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enum typec_port_type {
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TYPEC_PORT_SRC,
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TYPEC_PORT_SNK,
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TYPEC_PORT_DRP,
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};
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enum typec_port_data {
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TYPEC_PORT_DFP,
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TYPEC_PORT_UFP,
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TYPEC_PORT_DRD,
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};
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enum typec_plug_type {
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USB_PLUG_NONE,
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USB_PLUG_TYPE_A,
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USB_PLUG_TYPE_B,
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USB_PLUG_TYPE_C,
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USB_PLUG_CAPTIVE,
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};
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enum typec_data_role {
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TYPEC_DEVICE,
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TYPEC_HOST,
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};
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enum typec_role {
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TYPEC_SINK,
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TYPEC_SOURCE,
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};
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enum typec_pwr_opmode {
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TYPEC_PWR_MODE_USB,
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TYPEC_PWR_MODE_1_5A,
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TYPEC_PWR_MODE_3_0A,
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TYPEC_PWR_MODE_PD,
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};
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enum typec_accessory {
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TYPEC_ACCESSORY_NONE,
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TYPEC_ACCESSORY_AUDIO,
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TYPEC_ACCESSORY_DEBUG,
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};
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#define TYPEC_MAX_ACCESSORY 3
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enum typec_orientation {
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TYPEC_ORIENTATION_NONE,
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TYPEC_ORIENTATION_NORMAL,
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TYPEC_ORIENTATION_REVERSE,
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};
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/*
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* struct usb_pd_identity - USB Power Delivery identity data
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* @id_header: ID Header VDO
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* @cert_stat: Cert Stat VDO
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* @product: Product VDO
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* @product_type: Product type VDO
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*
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* USB power delivery Discover Identity command response data.
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*
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* REVISIT: This is USB Power Delivery specific information, so this structure
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* probable belongs to USB Power Delivery header file once we have them.
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*/
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struct usb_pd_identity {
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u32 id_header;
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u32 cert_stat;
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u32 product;
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u32 product_type;
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};
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int typec_partner_set_identity(struct typec_partner *partner);
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int typec_cable_set_identity(struct typec_cable *cable);
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/*
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* struct typec_altmode_desc - USB Type-C Alternate Mode Descriptor
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* @svid: Standard or Vendor ID
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* @mode: Index of the Mode
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* @vdo: VDO returned by Discover Modes USB PD command
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* @roles: Only for ports. DRP if the mode is available in both roles
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*
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* Description of an Alternate Mode which a connector, cable plug or partner
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* supports.
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*/
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struct typec_altmode_desc {
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u16 svid;
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u8 mode;
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u32 vdo;
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/* Only used with ports */
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enum typec_port_data roles;
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};
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struct typec_altmode
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*typec_partner_register_altmode(struct typec_partner *partner,
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const struct typec_altmode_desc *desc);
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struct typec_altmode
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*typec_plug_register_altmode(struct typec_plug *plug,
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const struct typec_altmode_desc *desc);
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struct typec_altmode
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*typec_port_register_altmode(struct typec_port *port,
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const struct typec_altmode_desc *desc);
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void typec_port_register_altmodes(struct typec_port *port,
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const struct typec_altmode_ops *ops, void *drvdata,
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struct typec_altmode **altmodes, size_t n);
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void typec_unregister_altmode(struct typec_altmode *altmode);
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struct typec_port *typec_altmode2port(struct typec_altmode *alt);
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void typec_altmode_update_active(struct typec_altmode *alt, bool active);
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enum typec_plug_index {
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TYPEC_PLUG_SOP_P,
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TYPEC_PLUG_SOP_PP,
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};
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/*
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* struct typec_plug_desc - USB Type-C Cable Plug Descriptor
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* @index: SOP Prime for the plug connected to DFP and SOP Double Prime for the
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* plug connected to UFP
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*
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* Represents USB Type-C Cable Plug.
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*/
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struct typec_plug_desc {
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enum typec_plug_index index;
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};
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/*
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* struct typec_cable_desc - USB Type-C Cable Descriptor
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* @type: The plug type from USB PD Cable VDO
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* @active: Is the cable active or passive
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* @identity: Result of Discover Identity command
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*
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* Represents USB Type-C Cable attached to USB Type-C port.
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*/
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struct typec_cable_desc {
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enum typec_plug_type type;
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unsigned int active:1;
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struct usb_pd_identity *identity;
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};
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/*
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* struct typec_partner_desc - USB Type-C Partner Descriptor
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* @usb_pd: USB Power Delivery support
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* @accessory: Audio, Debug or none.
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* @identity: Discover Identity command data
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*
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* Details about a partner that is attached to USB Type-C port. If @identity
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* member exists when partner is registered, a directory named "identity" is
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* created to sysfs for the partner device.
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*/
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struct typec_partner_desc {
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unsigned int usb_pd:1;
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enum typec_accessory accessory;
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struct usb_pd_identity *identity;
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};
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/*
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* struct typec_capability - USB Type-C Port Capabilities
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* @type: Supported power role of the port
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* @data: Supported data role of the port
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* @revision: USB Type-C Specification release. Binary coded decimal
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* @pd_revision: USB Power Delivery Specification revision if supported
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* @prefer_role: Initial role preference (DRP ports).
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* @accessory: Supported Accessory Modes
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* @sw: Cable plug orientation switch
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* @mux: Multiplexer switch for Alternate/Accessory Modes
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* @fwnode: Optional fwnode of the port
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* @try_role: Set data role preference for DRP port
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* @dr_set: Set Data Role
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* @pr_set: Set Power Role
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* @vconn_set: Set VCONN Role
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* @port_type_set: Set port type
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*
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* Static capabilities of a single USB Type-C port.
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*/
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struct typec_capability {
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enum typec_port_type type;
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enum typec_port_data data;
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u16 revision; /* 0120H = "1.2" */
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u16 pd_revision; /* 0300H = "3.0" */
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int prefer_role;
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enum typec_accessory accessory[TYPEC_MAX_ACCESSORY];
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struct typec_switch *sw;
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struct typec_mux *mux;
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struct fwnode_handle *fwnode;
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int (*try_role)(const struct typec_capability *,
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int role);
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int (*dr_set)(const struct typec_capability *,
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enum typec_data_role);
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int (*pr_set)(const struct typec_capability *,
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enum typec_role);
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int (*vconn_set)(const struct typec_capability *,
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enum typec_role);
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int (*port_type_set)(const struct typec_capability *,
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enum typec_port_type);
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};
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/* Specific to try_role(). Indicates the user want's to clear the preference. */
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#define TYPEC_NO_PREFERRED_ROLE (-1)
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struct typec_port *typec_register_port(struct device *parent,
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const struct typec_capability *cap);
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void typec_unregister_port(struct typec_port *port);
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struct typec_partner *typec_register_partner(struct typec_port *port,
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struct typec_partner_desc *desc);
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void typec_unregister_partner(struct typec_partner *partner);
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struct typec_cable *typec_register_cable(struct typec_port *port,
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struct typec_cable_desc *desc);
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void typec_unregister_cable(struct typec_cable *cable);
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struct typec_plug *typec_register_plug(struct typec_cable *cable,
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struct typec_plug_desc *desc);
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void typec_unregister_plug(struct typec_plug *plug);
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void typec_set_data_role(struct typec_port *port, enum typec_data_role role);
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void typec_set_pwr_role(struct typec_port *port, enum typec_role role);
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void typec_set_vconn_role(struct typec_port *port, enum typec_role role);
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void typec_set_pwr_opmode(struct typec_port *port, enum typec_pwr_opmode mode);
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int typec_set_orientation(struct typec_port *port,
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enum typec_orientation orientation);
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enum typec_orientation typec_get_orientation(struct typec_port *port);
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int typec_set_mode(struct typec_port *port, int mode);
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int typec_find_port_power_role(const char *name);
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int typec_find_power_role(const char *name);
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int typec_find_port_data_role(const char *name);
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#endif /* __LINUX_USB_TYPEC_H */
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