drivers/gpu/drm/i915/display/intel_sbi_regs.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/i915/display/intel_sbi_regs.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/i915/display/intel_sbi_regs.h
Extension
.h
Size
2405 bytes
Lines
66
Domain
Driver Families
Bucket
drivers/gpu
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

#ifndef __INTEL_SBI_REGS_H__
#define __INTEL_SBI_REGS_H__

#include "intel_display_reg_defs.h"

/*
 * Sideband Interface (SBI) is programmed indirectly, via SBI_ADDR, which
 * contains the register offset; and SBI_DATA, which contains the payload.
 */
#define SBI_ADDR			_MMIO(0xC6000)
#define   SBI_ADDR_MASK			REG_GENMASK(31, 16)
#define   SBI_ADDR_VALUE(addr)		REG_FIELD_PREP(SBI_ADDR_MASK, (addr))

#define SBI_DATA			_MMIO(0xC6004)

#define SBI_CTL_STAT			_MMIO(0xC6008)
#define   SBI_CTL_DEST_MASK		REG_GENMASK(16, 16)
#define   SBI_CTL_DEST_ICLK		REG_FIELD_PREP(SBI_CTL_DEST_MASK, 0)
#define   SBI_CTL_DEST_MPHY		REG_FIELD_PREP(SBI_CTL_DEST_MASK, 1)
#define   SBI_CTL_OP_MASK		REG_GENMASK(15, 8)
#define   SBI_CTL_OP_IORD		REG_FIELD_PREP(SBI_CTL_OP_MASK, 2)
#define   SBI_CTL_OP_IOWR		REG_FIELD_PREP(SBI_CTL_OP_MASK, 3)
#define   SBI_CTL_OP_CRRD		REG_FIELD_PREP(SBI_CTL_OP_MASK, 6)
#define   SBI_CTL_OP_CRWR		REG_FIELD_PREP(SBI_CTL_OP_MASK, 7)
#define   SBI_CTL_OP_WR			REG_BIT(8)
#define   SBI_RESPONSE_MASK		REG_GENMASK(2, 1)
#define   SBI_RESPONSE_FAIL		REG_FIELD_PREP(SBI_RESPONSE_MASK, 1)
#define   SBI_RESPONSE_SUCCESS		REG_FIELD_PREP(SBI_RESPONSE_MASK, 0)
#define   SBI_STATUS_MASK		REG_GENMASK(0, 0)
#define   SBI_STATUS_BUSY		REG_FIELD_PREP(SBI_STATUS_MASK, 1)
#define   SBI_STATUS_READY		REG_FIELD_PREP(SBI_STATUS_MASK, 0)

/* SBI offsets */
#define SBI_SSCDIVINTPHASE			0x0200

#define SBI_SSCDIVINTPHASE6			0x0600
#define   SBI_SSCDIVINTPHASE_DIVSEL_SHIFT	1
#define   SBI_SSCDIVINTPHASE_DIVSEL_MASK	(0x7f << 1)
#define   SBI_SSCDIVINTPHASE_DIVSEL(x)		((x) << 1)
#define   SBI_SSCDIVINTPHASE_INCVAL_SHIFT	8
#define   SBI_SSCDIVINTPHASE_INCVAL_MASK	(0x7f << 8)
#define   SBI_SSCDIVINTPHASE_INCVAL(x)		((x) << 8)
#define   SBI_SSCDIVINTPHASE_DIR(x)		((x) << 15)
#define   SBI_SSCDIVINTPHASE_PROPAGATE		(1 << 0)

#define SBI_SSCDITHPHASE			0x0204
#define SBI_SSCCTL				0x020c
#define SBI_SSCCTL6				0x060C
#define   SBI_SSCCTL_PATHALT			(1 << 3)
#define   SBI_SSCCTL_DISABLE			(1 << 0)

#define SBI_SSCAUXDIV6				0x0610
#define   SBI_SSCAUXDIV_FINALDIV2SEL_SHIFT	4
#define   SBI_SSCAUXDIV_FINALDIV2SEL_MASK	(1 << 4)
#define   SBI_SSCAUXDIV_FINALDIV2SEL(x)		((x) << 4)

#define SBI_DBUFF0				0x2a00

#define SBI_GEN0				0x1f00
#define   SBI_GEN0_CFG_BUFFENABLE_DISABLE	(1 << 0)

#endif /* __INTEL_SBI_REGS_H__ */

Annotation

Implementation Notes