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

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

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/i915/display/intel_de.h
Extension
.h
Size
4952 bytes
Lines
184
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_DE_H__
#define __INTEL_DE_H__

#include "intel_display_core.h"
#include "intel_dmc_wl.h"
#include "intel_dsb.h"
#include "intel_uncore.h"
#include "intel_uncore_trace.h"

static inline struct intel_uncore *__to_uncore(struct intel_display *display)
{
	return to_intel_uncore(display->drm);
}

u8 intel_de_read8(struct intel_display *display, intel_reg_t reg);
void intel_de_write8(struct intel_display *display, intel_reg_t reg, u8 val);
u16 intel_de_read16(struct intel_display *display, intel_reg_t reg);

static inline u32
intel_de_read(struct intel_display *display, intel_reg_t reg)
{
	u32 val;

	intel_dmc_wl_get(display, reg);

	val = intel_uncore_read(__to_uncore(display), reg);

	intel_dmc_wl_put(display, reg);

	return val;
}

static inline u64
intel_de_read64_2x32_volatile(struct intel_display *display,
			      intel_reg_t lower_reg, intel_reg_t upper_reg)
{
	u64 val;

	intel_dmc_wl_get(display, lower_reg);
	intel_dmc_wl_get(display, upper_reg);

	val = intel_uncore_read64_2x32(__to_uncore(display), lower_reg,
				       upper_reg);

	intel_dmc_wl_put(display, upper_reg);
	intel_dmc_wl_put(display, lower_reg);

	return val;
}

static inline u64
intel_de_read64_2x32(struct intel_display *display, intel_reg_t reg)
{
	intel_reg_t upper_reg = _MMIO(intel_reg_offset(reg) + 4);
	u32 lower, upper;

	lower = intel_de_read(display, reg);
	upper = intel_de_read(display, upper_reg);

	return (u64)upper << 32 | lower;
}

static inline void
intel_de_posting_read(struct intel_display *display, intel_reg_t reg)
{
	intel_dmc_wl_get(display, reg);

	intel_uncore_posting_read(__to_uncore(display), reg);

	intel_dmc_wl_put(display, reg);
}

static inline void
intel_de_write(struct intel_display *display, intel_reg_t reg, u32 val)
{
	intel_dmc_wl_get(display, reg);

	intel_uncore_write(__to_uncore(display), reg, val);

	intel_dmc_wl_put(display, reg);
}

static inline u32
intel_de_rmw(struct intel_display *display, intel_reg_t reg, u32 clear, u32 set)
{
	u32 val;

	intel_dmc_wl_get(display, reg);

	val = intel_uncore_rmw(__to_uncore(display), reg, clear, set);

Annotation

Implementation Notes