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#ifndef __LINUX_USB_TYPEC_H
#define __LINUX_USB_TYPEC_H
#include <linux/types.h>
/* XXX: Once we have a header for USB Power Delivery, this belongs there */
#define ALTMODE_MAX_MODES 6
/* USB Type-C Specification releases */
#define USB_TYPEC_REV_1_0 0x100 /* 1.0 */
#define USB_TYPEC_REV_1_1 0x110 /* 1.1 */
#define USB_TYPEC_REV_1_2 0x120 /* 1.2 */
struct typec_altmode;
struct typec_partner;
struct typec_cable;
struct typec_plug;
struct typec_port;
struct fwnode_handle;
enum typec_port_type {
TYPEC_PORT_DFP,
TYPEC_PORT_UFP,
TYPEC_PORT_DRP,
};
enum typec_plug_type {
USB_PLUG_NONE,
USB_PLUG_TYPE_A,
USB_PLUG_TYPE_B,
USB_PLUG_TYPE_C,
USB_PLUG_CAPTIVE,
};
enum typec_data_role {
TYPEC_DEVICE,
TYPEC_HOST,
};
enum typec_role {
TYPEC_SINK,
TYPEC_SOURCE,
};
enum typec_pwr_opmode {
TYPEC_PWR_MODE_USB,
TYPEC_PWR_MODE_1_5A,
TYPEC_PWR_MODE_3_0A,
TYPEC_PWR_MODE_PD,
};
enum typec_accessory {
TYPEC_ACCESSORY_NONE,
TYPEC_ACCESSORY_AUDIO,
TYPEC_ACCESSORY_DEBUG,
};
#define TYPEC_MAX_ACCESSORY 3
/*
* struct usb_pd_identity - USB Power Delivery identity data
* @id_header: ID Header VDO
* @cert_stat: Cert Stat VDO
* @product: Product VDO
*
* USB power delivery Discover Identity command response data.
*
* REVISIT: This is USB Power Delivery specific information, so this structure
* probable belongs to USB Power Delivery header file once we have them.
*/
struct usb_pd_identity {
u32 id_header;
u32 cert_stat;
u32 product;
};
int typec_partner_set_identity(struct typec_partner *partner);
int typec_cable_set_identity(struct typec_cable *cable);
/*
* struct typec_mode_desc - Individual Mode of an Alternate Mode
* @index: Index of the Mode within the SVID
* @vdo: VDO returned by Discover Modes USB PD command
* @desc: Optional human readable description of the mode
* @roles: Only for ports. DRP if the mode is available in both roles
*
* Description of a mode of an Alternate Mode which a connector, cable plug or
* partner supports. Every mode will have it's own sysfs group. The details are
* the VDO returned by discover modes command, description for the mode and
* active flag telling has the mode being entered or not.
*/
struct typec_mode_desc {
int index;
u32 vdo;
char *desc;
/* Only used with ports */
enum typec_port_type roles;
};
/*
* struct typec_altmode_desc - USB Type-C Alternate Mode Descriptor
* @svid: Standard or Vendor ID
* @n_modes: Number of modes
* @modes: Array of modes supported by the Alternate Mode
*
* Representation of an Alternate Mode that has SVID assigned by USB-IF. The
* array of modes will list the modes of a particular SVID that are supported by
* a connector, partner of a cable plug.
*/
struct typec_altmode_desc {
u16 svid;
int n_modes;
struct typec_mode_desc modes[ALTMODE_MAX_MODES];
};
struct typec_altmode
*typec_partner_register_altmode(struct typec_partner *partner,
const struct typec_altmode_desc *desc);
struct typec_altmode
*typec_plug_register_altmode(struct typec_plug *plug,
const struct typec_altmode_desc *desc);
struct typec_altmode
*typec_port_register_altmode(struct typec_port *port,
const struct typec_altmode_desc *desc);
void typec_unregister_altmode(struct typec_altmode *altmode);
struct typec_port *typec_altmode2port(struct typec_altmode *alt);
void typec_altmode_update_active(struct typec_altmode *alt, int mode,
bool active);
enum typec_plug_index {
TYPEC_PLUG_SOP_P,
TYPEC_PLUG_SOP_PP,
};
/*
* struct typec_plug_desc - USB Type-C Cable Plug Descriptor
* @index: SOP Prime for the plug connected to DFP and SOP Double Prime for the
* plug connected to UFP
*
* Represents USB Type-C Cable Plug.
*/
struct typec_plug_desc {
enum typec_plug_index index;
};
/*
* struct typec_cable_desc - USB Type-C Cable Descriptor
* @type: The plug type from USB PD Cable VDO
* @active: Is the cable active or passive
* @identity: Result of Discover Identity command
*
* Represents USB Type-C Cable attached to USB Type-C port.
*/
struct typec_cable_desc {
enum typec_plug_type type;
unsigned int active:1;
struct usb_pd_identity *identity;
};
/*
* struct typec_partner_desc - USB Type-C Partner Descriptor
* @usb_pd: USB Power Delivery support
* @accessory: Audio, Debug or none.
* @identity: Discover Identity command data
*
* Details about a partner that is attached to USB Type-C port. If @identity
* member exists when partner is registered, a directory named "identity" is
* created to sysfs for the partner device.
*/
struct typec_partner_desc {
unsigned int usb_pd:1;
enum typec_accessory accessory;
struct usb_pd_identity *identity;
};
/*
* struct typec_capability - USB Type-C Port Capabilities
* @role: DFP (Host-only), UFP (Device-only) or DRP (Dual Role)
* @revision: USB Type-C Specification release. Binary coded decimal
* @pd_revision: USB Power Delivery Specification revision if supported
* @prefer_role: Initial role preference
* @accessory: Supported Accessory Modes
* @fwnode: Optional fwnode of the port
* @try_role: Set data role preference for DRP port
* @dr_set: Set Data Role
* @pr_set: Set Power Role
* @vconn_set: Set VCONN Role
* @activate_mode: Enter/exit given Alternate Mode
* @port_type_set: Set port type
*
* Static capabilities of a single USB Type-C port.
*/
struct typec_capability {
enum typec_port_type type;
u16 revision; /* 0120H = "1.2" */
u16 pd_revision; /* 0300H = "3.0" */
int prefer_role;
enum typec_accessory accessory[TYPEC_MAX_ACCESSORY];
struct fwnode_handle *fwnode;
int (*try_role)(const struct typec_capability *,
int role);
int (*dr_set)(const struct typec_capability *,
enum typec_data_role);
int (*pr_set)(const struct typec_capability *,
enum typec_role);
int (*vconn_set)(const struct typec_capability *,
enum typec_role);
int (*activate_mode)(const struct typec_capability *,
int mode, int activate);
int (*port_type_set)(const struct typec_capability *,
enum typec_port_type);
};
/* Specific to try_role(). Indicates the user want's to clear the preference. */
#define TYPEC_NO_PREFERRED_ROLE (-1)
struct typec_port *typec_register_port(struct device *parent,
const struct typec_capability *cap);
void typec_unregister_port(struct typec_port *port);
struct typec_partner *typec_register_partner(struct typec_port *port,
struct typec_partner_desc *desc);
void typec_unregister_partner(struct typec_partner *partner);
struct typec_cable *typec_register_cable(struct typec_port *port,
struct typec_cable_desc *desc);
void typec_unregister_cable(struct typec_cable *cable);
struct typec_plug *typec_register_plug(struct typec_cable *cable,
struct typec_plug_desc *desc);
void typec_unregister_plug(struct typec_plug *plug);
void typec_set_data_role(struct typec_port *port, enum typec_data_role role);
void typec_set_pwr_role(struct typec_port *port, enum typec_role role);
void typec_set_vconn_role(struct typec_port *port, enum typec_role role);
void typec_set_pwr_opmode(struct typec_port *port, enum typec_pwr_opmode mode);
#endif /* __LINUX_USB_TYPEC_H */
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