drivers/usb/cdns3/drd.h

Source file repositories/reference/linux-study-clean/drivers/usb/cdns3/drd.h

File Facts

System
Linux kernel
Corpus path
drivers/usb/cdns3/drd.h
Extension
.h
Size
6016 bytes
Lines
227
Domain
Driver Families
Bucket
drivers/usb
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct cdns3_otg_regs {
	__le32 did;
	__le32 rid;
	__le32 capabilities;
	__le32 reserved1;
	__le32 cmd;
	__le32 sts;
	__le32 state;
	__le32 reserved2;
	__le32 ien;
	__le32 ivect;
	__le32 refclk;
	__le32 tmr;
	__le32 reserved3[4];
	__le32 simulate;
	__le32 override;
	__le32 susp_ctrl;
	__le32 phyrst_cfg;
	__le32 anasts;
	__le32 adp_ramp_time;
	__le32 ctrl1;
	__le32 ctrl2;
};

/*  DRD register interface for version v0 of cdns3 driver. */
struct cdns3_otg_legacy_regs {
	__le32 cmd;
	__le32 sts;
	__le32 state;
	__le32 refclk;
	__le32 ien;
	__le32 ivect;
	__le32 reserved1[3];
	__le32 tmr;
	__le32 reserved2[2];
	__le32 version;
	__le32 capabilities;
	__le32 reserved3[2];
	__le32 simulate;
	__le32 reserved4[5];
	__le32 ctrl1;
};

/* DRD register interface for cdnsp driver */
struct cdnsp_otg_regs {
	__le32 did;
	__le32 rid;
	__le32 cfgs1;
	__le32 cfgs2;
	__le32 cmd;
	__le32 sts;
	__le32 state;
	__le32 ien;
	__le32 ivect;
	__le32 tmr;
	__le32 simulate;
	__le32 adpbc_sts;
	__le32 adp_ramp_time;
	__le32 adpbc_ctrl1;
	__le32 adpbc_ctrl2;
	__le32 override;
	__le32 vbusvalid_dbnc_cfg;
	__le32 sessvalid_dbnc_cfg;
	__le32 susp_timing_ctrl;
};

/* CDNSP driver supports 0x000403xx Cadence USB controller family. */
#define OTG_CDNSP_CHECK_DID(did) (((did) & GENMASK(31, 8)) == 0x00040300)

/* CDNS3 driver supports 0x000402xx Cadence USB controller family. */
#define OTG_CDNS3_CHECK_DID(did) (((did) & GENMASK(31, 8)) == 0x00040200)

/*
 * Common registers interface for both CDNS3 and CDNSP version of DRD.
 */
struct cdns_otg_common_regs {
	__le32 cmd;
	__le32 sts;
	__le32 state;
};

/*
 * Interrupt related registers. This registers are mapped in different
 * location for CDNSP controller.
 */
struct cdns_otg_irq_regs {
	__le32 ien;
	__le32 ivect;
};

Annotation

Implementation Notes