1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __USB_TYPEC_TBT_H
3#define __USB_TYPEC_TBT_H
4
5#include <linux/usb/typec_altmode.h>
6#include <linux/bitfield.h>
7
8#define USB_TYPEC_VENDOR_INTEL 0x8087
9/* Alias for convenience */
10#define USB_TYPEC_TBT_SID USB_TYPEC_VENDOR_INTEL
11
12/* Connector state for Thunderbolt3 */
13#define TYPEC_TBT_MODE TYPEC_STATE_MODAL
14
15/**
16 * struct typec_thunderbolt_data - Thundebolt3 Alt Mode specific data
17 * @device_mode: Device Discover Mode VDO
18 * @cable_mode: Cable Discover Mode VDO
19 * @enter_vdo: Enter Mode VDO
20 */
21struct typec_thunderbolt_data {
22 u32 device_mode;
23 u32 cable_mode;
24 u32 enter_vdo;
25};
26
27/* TBT3 Device Discover Mode VDO bits */
28#define TBT_MODE BIT(0)
29#define TBT_ADAPTER(_vdo_) FIELD_GET(BIT(16), _vdo_)
30#define TBT_ADAPTER_LEGACY 0
31#define TBT_ADAPTER_TBT3 1
32#define TBT_INTEL_SPECIFIC_B0 BIT(26)
33#define TBT_VENDOR_SPECIFIC_B0 BIT(30)
34#define TBT_VENDOR_SPECIFIC_B1 BIT(31)
35
36#define TBT_SET_ADAPTER(a) (((a) & 1) << 16)
37
38/* TBT3 Cable Discover Mode VDO bits */
39#define TBT_CABLE_SPEED(_vdo_) FIELD_GET(GENMASK(18, 16), _vdo_)
40#define TBT_CABLE_USB3_GEN1 1
41#define TBT_CABLE_USB3_PASSIVE 2
42#define TBT_CABLE_10_AND_20GBPS 3
43#define TBT_CABLE_ROUNDED_SUPPORT(_vdo_) FIELD_GET(GENMASK(20, 19), _vdo_)
44
45#define TBT_GEN3_NON_ROUNDED 0
46#define TBT_GEN3_GEN4_ROUNDED_NON_ROUNDED 1
47#define TBT_CABLE_ROUNDED BIT(19)
48#define TBT_CABLE_OPTICAL BIT(21)
49#define TBT_CABLE_RETIMER BIT(22)
50#define TBT_CABLE_LINK_TRAINING BIT(23)
51#define TBT_CABLE_ACTIVE_PASSIVE BIT(25)
52
53#define TBT_SET_CABLE_SPEED(_s_) (((_s_) & GENMASK(2, 0)) << 16)
54#define TBT_SET_CABLE_ROUNDED(_g_) (((_g_) & GENMASK(1, 0)) << 19)
55
56/* TBT3 Device Enter Mode VDO bits */
57#define TBT_ENTER_MODE_CABLE_SPEED(s) TBT_SET_CABLE_SPEED(s)
58#define TBT_ENTER_MODE_UNI_DIR_LSRX BIT(23)
59#define TBT_ENTER_MODE_ACTIVE_CABLE BIT(24)
60
61#endif /* __USB_TYPEC_TBT_H */
62

source code of linux/include/linux/usb/typec_tbt.h