drivers/gpu/drm/nouveau/dispnv50/lut.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/dispnv50/lut.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/dispnv50/lut.c
Extension
.c
Size
2356 bytes
Lines
80
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

if (!WARN_ON(!in)) {
			for (i = 0; i < 1024; i++) {
				in[i].red   =
				in[i].green =
				in[i].blue  = (i << 16) >> 10;
			}
			load(in, 1024, mem);
			kvfree(in);
		}
	} else {
		load(in, drm_color_lut_size(blob), mem);
	}

	return addr;
}

void
nv50_lut_fini(struct nv50_lut *lut)
{
	int i;
	for (i = 0; i < ARRAY_SIZE(lut->mem); i++)
		nvif_mem_dtor(&lut->mem[i]);
}

int
nv50_lut_init(struct nv50_disp *disp, struct nvif_mmu *mmu,
	      struct nv50_lut *lut)
{
	const u32 size = disp->disp->object.oclass < GF110_DISP ? 257 : 1025;
	int i;
	for (i = 0; i < ARRAY_SIZE(lut->mem); i++) {
		int ret = nvif_mem_ctor_map(mmu, "kmsLut", NVIF_MEM_VRAM,
					    size * 8, &lut->mem[i]);
		if (ret)
			return ret;
	}
	return 0;
}

Annotation

Implementation Notes