linux/usb/typec_tbt.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef __USB_TYPEC_TBT_H
0003 #define __USB_TYPEC_TBT_H
0004
0005 #include <linux/usb/typec_altmode.h>
0006
0007 #define USB_TYPEC_VENDOR_INTEL      0x8087
0008 /* Alias for convenience */
0009 #define USB_TYPEC_TBT_SID       USB_TYPEC_VENDOR_INTEL
0010
0011 /* Connector state for Thunderbolt3 */
0012 #define TYPEC_TBT_MODE          TYPEC_STATE_MODAL
0013
0014 /**
0015  * struct typec_thunderbolt_data - Thundebolt3 Alt Mode specific data
0016  * @device_mode: Device Discover Mode VDO
0017  * @cable_mode: Cable Discover Mode VDO
0018  * @enter_vdo: Enter Mode VDO
0019  */
0020 struct typec_thunderbolt_data {
0021     u32 device_mode;
0022     u32 cable_mode;
0023     u32 enter_vdo;
0024 };
0025
0026 /* TBT3 Device Discover Mode VDO bits */
0027 #define TBT_MODE            BIT(0)
0028 #define TBT_ADAPTER(_vdo_)      (((_vdo_) & BIT(16)) >> 16)
0029 #define   TBT_ADAPTER_LEGACY        0
0030 #define   TBT_ADAPTER_TBT3      1
0031 #define TBT_INTEL_SPECIFIC_B0       BIT(26)
0032 #define TBT_VENDOR_SPECIFIC_B0      BIT(30)
0033 #define TBT_VENDOR_SPECIFIC_B1      BIT(31)
0034
0035 #define TBT_SET_ADAPTER(a)      (((a) & 1) << 16)
0036
0037 /* TBT3 Cable Discover Mode VDO bits */
0038 #define TBT_CABLE_SPEED(_vdo_)      (((_vdo_) & GENMASK(18, 16)) >> 16)
0039 #define   TBT_CABLE_USB3_GEN1       1
0040 #define   TBT_CABLE_USB3_PASSIVE    2
0041 #define   TBT_CABLE_10_AND_20GBPS   3
0042 #define TBT_CABLE_ROUNDED_SUPPORT(_vdo_) \
0043                     (((_vdo_) & GENMASK(20, 19)) >> 19)
0044 #define   TBT_GEN3_NON_ROUNDED                 0
0045 #define   TBT_GEN3_GEN4_ROUNDED_NON_ROUNDED    1
0046 #define TBT_CABLE_OPTICAL       BIT(21)
0047 #define TBT_CABLE_RETIMER       BIT(22)
0048 #define TBT_CABLE_LINK_TRAINING     BIT(23)
0049
0050 #define TBT_SET_CABLE_SPEED(_s_)    (((_s_) & GENMASK(2, 0)) << 16)
0051 #define TBT_SET_CABLE_ROUNDED(_g_)  (((_g_) & GENMASK(1, 0)) << 19)
0052
0053 /* TBT3 Device Enter Mode VDO bits */
0054 #define TBT_ENTER_MODE_CABLE_SPEED(s)   TBT_SET_CABLE_SPEED(s)
0055 #define TBT_ENTER_MODE_ACTIVE_CABLE BIT(24)
0056
0057 #endif /* __USB_TYPEC_TBT_H */