drivers/gpu/drm/nouveau/nvkm/engine/disp/ior.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/nvkm/engine/disp/ior.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/nvkm/engine/disp/ior.c
Extension
.c
Size
2153 bytes
Lines
73
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

#include "ior.h"

static const char *
nvkm_ior_name[] = {
	[DAC] = "DAC",
	[SOR] = "SOR",
	[PIOR] = "PIOR",
};

struct nvkm_ior *
nvkm_ior_find(struct nvkm_disp *disp, enum nvkm_ior_type type, int id)
{
	struct nvkm_ior *ior;
	list_for_each_entry(ior, &disp->iors, head) {
		if (ior->type == type && (id < 0 || ior->id == id))
			return ior;
	}
	return NULL;
}

void
nvkm_ior_del(struct nvkm_ior **pior)
{
	struct nvkm_ior *ior = *pior;
	if (ior) {
		IOR_DBG(ior, "dtor");
		list_del(&ior->head);
		kfree(*pior);
		*pior = NULL;
	}
}

int
nvkm_ior_new_(const struct nvkm_ior_func *func, struct nvkm_disp *disp,
	      enum nvkm_ior_type type, int id, bool hda)
{
	struct nvkm_ior *ior;
	if (!(ior = kzalloc_obj(*ior)))
		return -ENOMEM;
	ior->func = func;
	ior->disp = disp;
	ior->type = type;
	ior->id = id;
	ior->hda = hda;
	snprintf(ior->name, sizeof(ior->name), "%s-%d", nvkm_ior_name[ior->type], ior->id);
	list_add_tail(&ior->head, &disp->iors);
	IOR_DBG(ior, "ctor");
	return 0;
}

Annotation

Implementation Notes