redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

usb: typec: Add definitions for Thunderbolt 3 Alternate Mode

Browse source 
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: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20200302135353.56659-9-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heikki Krogerus 2020-03-02 16:53:52 +03:00 committed by Greg Kroah-Hartman
parent a7914d1072
commit ca469c292e
1 changed files with 53 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

53
include/linux/usb/typec_tbt.h Normal file
View file

@ -0,0 +1,53 @@
/* 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 */