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  */
21 struct 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_OPTICAL		BIT(21)
48 #define TBT_CABLE_RETIMER		BIT(22)
49 #define TBT_CABLE_LINK_TRAINING		BIT(23)
50 #define TBT_CABLE_ACTIVE_PASSIVE	BIT(25)
51 
52 #define TBT_SET_CABLE_SPEED(_s_)	(((_s_) & GENMASK(2, 0)) << 16)
53 #define TBT_SET_CABLE_ROUNDED(_g_)	(((_g_) & GENMASK(1, 0)) << 19)
54 
55 /* TBT3 Device Enter Mode VDO bits */
56 #define TBT_ENTER_MODE_CABLE_SPEED(s)	TBT_SET_CABLE_SPEED(s)
57 #define TBT_ENTER_MODE_ACTIVE_CABLE	BIT(24)
58 
59 #endif /* __USB_TYPEC_TBT_H */
60