include/linux/usb/typec_tbt.h

Source file repositories/reference/linux-study-clean/include/linux/usb/typec_tbt.h

File Facts

System
Linux kernel
Corpus path
include/linux/usb/typec_tbt.h
Extension
.h
Size
1910 bytes
Lines
62
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

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_)		FIELD_GET(BIT(16), _vdo_)
#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_)		FIELD_GET(GENMASK(18, 16), _vdo_)
#define   TBT_CABLE_USB3_GEN1		1
#define   TBT_CABLE_USB3_PASSIVE	2
#define   TBT_CABLE_10_AND_20GBPS	3
#define TBT_CABLE_ROUNDED_SUPPORT(_vdo_) FIELD_GET(GENMASK(20, 19), _vdo_)

#define   TBT_GEN3_NON_ROUNDED                 0
#define   TBT_GEN3_GEN4_ROUNDED_NON_ROUNDED    1
#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_CABLE_ACTIVE_PASSIVE	BIT(25)

#define TBT_SET_CABLE_SPEED(_s_)	(((_s_) & GENMASK(2, 0)) << 16)
#define TBT_SET_CABLE_ROUNDED(_g_)	(((_g_) & GENMASK(1, 0)) << 19)

/* TBT3 Device Enter Mode VDO bits */
#define TBT_ENTER_MODE_CABLE_SPEED(s)	TBT_SET_CABLE_SPEED(s)
#define TBT_ENTER_MODE_UNI_DIR_LSRX	BIT(23)
#define TBT_ENTER_MODE_ACTIVE_CABLE	BIT(24)

#endif /* __USB_TYPEC_TBT_H */

Annotation

Implementation Notes