drivers/gpu/drm/nouveau/nvkm/subdev/devinit/g84.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/g84.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/nvkm/subdev/devinit/g84.c
Extension
.c
Size
2317 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

#include "nv50.h"

#include <subdev/bios.h>
#include <subdev/bios/init.h>

static void
g84_devinit_disable(struct nvkm_devinit *init)
{
	struct nvkm_device *device = init->subdev.device;
	u32 r001540 = nvkm_rd32(device, 0x001540);
	u32 r00154c = nvkm_rd32(device, 0x00154c);

	if (!(r001540 & 0x40000000)) {
		nvkm_subdev_disable(device, NVKM_ENGINE_MPEG, 0);
		nvkm_subdev_disable(device, NVKM_ENGINE_VP, 0);
		nvkm_subdev_disable(device, NVKM_ENGINE_BSP, 0);
		nvkm_subdev_disable(device, NVKM_ENGINE_CIPHER, 0);
	}

	if (!(r00154c & 0x00000004))
		nvkm_subdev_disable(device, NVKM_ENGINE_DISP, 0);
	if (!(r00154c & 0x00000020))
		nvkm_subdev_disable(device, NVKM_ENGINE_BSP, 0);
	if (!(r00154c & 0x00000040))
		nvkm_subdev_disable(device, NVKM_ENGINE_CIPHER, 0);
}

static const struct nvkm_devinit_func
g84_devinit = {
	.preinit = nv50_devinit_preinit,
	.init = nv50_devinit_init,
	.post = nv04_devinit_post,
	.pll_set = nv50_devinit_pll_set,
	.disable = g84_devinit_disable,
};

int
g84_devinit_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
		struct nvkm_devinit **pinit)
{
	return nv50_devinit_new_(&g84_devinit, device, type, inst, pinit);
}

Annotation

Implementation Notes