Commit ca469c29 authored by Heikki Krogerus's avatar Heikki Krogerus Committed by Greg Kroah-Hartman
Browse files

usb: typec: Add definitions for Thunderbolt 3 Alternate Mode 



This adds separate header file for the Thunderbolt 3
Alternate Mode (aka. TBT). The header supplies definitions for
all the Thunderbolt specific VDOs (Vendor Defined Objects)
that are described in the USB Type-C Connector specification
v2.0, as well as definition for the Thunderbolt 3 Standard
ID (SID).

There is also a new connector state value for the
Thunderbolt 3 Alternate Mode that can be used with the mux
drivers.

Signed-off-by: default avatarHeikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20200302135353.56659-9-heikki.krogerus@linux.intel.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a7914d10

include/linux/usb/typec_tbt.h

0 → 100644
+53 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

#ifndef __USB_TYPEC_TBT_H

#define __USB_TYPEC_TBT_H



#include <linux/usb/typec_altmode.h>



#define USB_TYPEC_VENDOR_INTEL		0x8087

/* Alias for convenience */

#define USB_TYPEC_TBT_SID		USB_TYPEC_VENDOR_INTEL



/* Connector state for Thunderbolt3 */

#define TYPEC_TBT_MODE			TYPEC_STATE_MODAL



/**

 * struct typec_thunderbolt_data - Thundebolt3 Alt Mode specific data

 * @device_mode: Device Discover Mode VDO

 * @cable_mode: Cable Discover Mode VDO

 * @enter_vdo: Enter Mode VDO

 */

struct typec_thunderbolt_data {

	u32 device_mode;

	u32 cable_mode;

	u32 enter_vdo;

};



/* TBT3 Device Discover Mode VDO bits */

#define TBT_MODE			BIT(0)

#define TBT_ADAPTER(_vdo_)		(((_vdo_) & BIT(16)) >> 16)

#define   TBT_ADAPTER_LEGACY		0

#define   TBT_ADAPTER_TBT3		1

#define TBT_INTEL_SPECIFIC_B0		BIT(26)

#define TBT_VENDOR_SPECIFIC_B0		BIT(30)

#define TBT_VENDOR_SPECIFIC_B1		BIT(31)



#define TBT_SET_ADAPTER(a)		(((a) & 1) << 16)



/* TBT3 Cable Discover Mode VDO bits */

#define TBT_CABLE_SPEED(_vdo_)		(((_vdo_) & GENMASK(18, 16)) >> 16)

#define   TBT_CABLE_USB3_GEN1		1

#define   TBT_CABLE_USB3_PASSIVE	2

#define   TBT_CABLE_10_AND_20GBPS	3

#define TBT_CABLE_ROUNDED		BIT(19)

#define TBT_CABLE_OPTICAL		BIT(21)

#define TBT_CABLE_RETIMER		BIT(22)

#define TBT_CABLE_LINK_TRAINING		BIT(23)



#define TBT_SET_CABLE_SPEED(_s_)	(((_s_) & GENMASK(2, 0)) << 16)



/* TBT3 Device Enter Mode VDO bits */

#define TBT_ENTER_MODE_CABLE_SPEED(s)	TBT_SET_CABLE_SPEED(s)

#define TBT_ENTER_MODE_ACTIVE_CABLE	BIT(24)



#endif /* __USB_TYPEC_TBT_H */