typec_tbt.h

 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 */