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

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

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/i915/display/intel_display_utils.h
Extension
.h
Size
663 bytes
Lines
28
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_DISPLAY_UTILS__
#define __INTEL_DISPLAY_UTILS__

#include <linux/bug.h>
#include <linux/types.h>

struct intel_display;

#define MISSING_CASE(x) WARN(1, "Missing case (%s == %ld)\n", \
			     __stringify(x), (long)(x))

#define fetch_and_zero(ptr) ({						\
	typeof(*ptr) __T = *(ptr);					\
	*(ptr) = (typeof(*ptr))0;					\
	__T;								\
})

#define KHz(x) (1000 * (x))
#define MHz(x) KHz(1000 * (x))

bool intel_display_run_as_guest(struct intel_display *display);
bool intel_display_vtd_active(struct intel_display *display);

#endif /* __INTEL_DISPLAY_UTILS__ */

Annotation

Implementation Notes