drivers/gpu/drm/nouveau/nvkm/engine/disp/gm200.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/nvkm/engine/disp/gm200.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/nvkm/engine/disp/gm200.c
Extension
.c
Size
5980 bytes
Lines
197
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 (sublinks & BIT(s)) {
			u32 data = nvkm_rd32(device, 0x612308 + (m * 0x80));
			lnk[s] = (data & 0x00000010) >> 4;
			sor[s] = (data & 0x0000000f);
			if (!sor[s])
				return -1;
			*link |= lnk[s];
		}
	}

	if (sublinks == 3) {
		if (sor[0] != sor[1] || WARN_ON(lnk[0] || !lnk[1]))
			return -1;
	}

	return ((sublinks & 1) ? sor[0] : sor[1]) - 1;
}

static const struct nvkm_ior_func
gm200_sor = {
	.route = {
		.get = gm200_sor_route_get,
		.set = gm200_sor_route_set,
	},
	.state = gf119_sor_state,
	.power = nv50_sor_power,
	.clock = gf119_sor_clock,
	.bl = &gt215_sor_bl,
	.hdmi = &gm200_sor_hdmi,
	.dp = &gm200_sor_dp,
	.hda = &gf119_sor_hda,
};

static int
gm200_sor_new(struct nvkm_disp *disp, int id)
{
	struct nvkm_device *device = disp->engine.subdev.device;
	u32 hda;

	if (!((hda = nvkm_rd32(device, 0x08a15c)) & 0x40000000))
		hda = nvkm_rd32(device, 0x101034);

	return nvkm_ior_new_(&gm200_sor, disp, SOR, id, hda & BIT(id));
}

static const struct nvkm_disp_func
gm200_disp = {
	.oneinit = nv50_disp_oneinit,
	.init = gf119_disp_init,
	.fini = gf119_disp_fini,
	.intr = gf119_disp_intr,
	.intr_error = gf119_disp_intr_error,
	.super = gf119_disp_super,
	.uevent = &gf119_disp_chan_uevent,
	.head = { .cnt = gf119_head_cnt, .new = gf119_head_new },
	.dac = { .cnt = gf119_dac_cnt, .new = gf119_dac_new },
	.sor = { .cnt = gf119_sor_cnt, .new = gm200_sor_new },
	.root = { 0,0,GM200_DISP },
	.user = {
		{{0,0,GK104_DISP_CURSOR             }, nvkm_disp_chan_new, &gf119_disp_curs },
		{{0,0,GK104_DISP_OVERLAY            }, nvkm_disp_chan_new, &gf119_disp_oimm },
		{{0,0,GK110_DISP_BASE_CHANNEL_DMA   }, nvkm_disp_chan_new, &gf119_disp_base },
		{{0,0,GM200_DISP_CORE_CHANNEL_DMA   }, nvkm_disp_core_new, &gk104_disp_core },
		{{0,0,GK104_DISP_OVERLAY_CONTROL_DMA}, nvkm_disp_chan_new, &gk104_disp_ovly },
		{}
	},
};

int
gm200_disp_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
	       struct nvkm_disp **pdisp)
{
	return nvkm_disp_new_(&gm200_disp, device, type, inst, pdisp);
}

Annotation

Implementation Notes