drivers/gpu/drm/nouveau/dispnv50/head917d.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/dispnv50/head917d.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/dispnv50/head917d.c
Extension
.c
Size
4810 bytes
Lines
139
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

switch (asyh->base.cpp) {
		case 8: bounds |= NVDEF(NV917D, HEAD_SET_BASE_CHANNEL_USAGE_BOUNDS, PIXEL_DEPTH, BPP_64); break;
		case 4: bounds |= NVDEF(NV917D, HEAD_SET_BASE_CHANNEL_USAGE_BOUNDS, PIXEL_DEPTH, BPP_32); break;
		case 2: bounds |= NVDEF(NV917D, HEAD_SET_BASE_CHANNEL_USAGE_BOUNDS, PIXEL_DEPTH, BPP_16); break;
		case 1: bounds |= NVDEF(NV917D, HEAD_SET_BASE_CHANNEL_USAGE_BOUNDS, PIXEL_DEPTH, BPP_8); break;
		default:
			WARN_ON(1);
			break;
		}
		bounds |= NVDEF(NV917D, HEAD_SET_BASE_CHANNEL_USAGE_BOUNDS, USABLE, TRUE);
		bounds |= NVDEF(NV917D, HEAD_SET_BASE_CHANNEL_USAGE_BOUNDS, BASE_LUT, USAGE_1025);
	}

	if ((ret = PUSH_WAIT(push, 2)))
		return ret;

	PUSH_MTHD(push, NV917D, HEAD_SET_BASE_CHANNEL_USAGE_BOUNDS(i), bounds);
	return 0;
}

static int
head917d_curs_set(struct nv50_head *head, struct nv50_head_atom *asyh)
{
	struct nvif_push *push = &nv50_disp(head->base.base.dev)->core->chan.push;
	const int i = head->base.index;
	int ret;

	ret = PUSH_WAIT(push, 5);
	if (ret)
		return ret;

	PUSH_MTHD(push, NV917D, HEAD_SET_CONTROL_CURSOR(i),
		  NVDEF(NV917D, HEAD_SET_CONTROL_CURSOR, ENABLE, ENABLE) |
		  NVVAL(NV917D, HEAD_SET_CONTROL_CURSOR, FORMAT, asyh->curs.format) |
		  NVVAL(NV917D, HEAD_SET_CONTROL_CURSOR, SIZE, asyh->curs.layout) |
		  NVVAL(NV917D, HEAD_SET_CONTROL_CURSOR, HOT_SPOT_X, 0) |
		  NVVAL(NV917D, HEAD_SET_CONTROL_CURSOR, HOT_SPOT_Y, 0) |
		  NVDEF(NV917D, HEAD_SET_CONTROL_CURSOR, COMPOSITION, ALPHA_BLEND),

				HEAD_SET_OFFSET_CURSOR(i), asyh->curs.offset >> 8);

	PUSH_MTHD(push, NV917D, HEAD_SET_CONTEXT_DMA_CURSOR(i), asyh->curs.handle);
	return 0;
}

int
head917d_curs_layout(struct nv50_head *head, struct nv50_wndw_atom *asyw,
		     struct nv50_head_atom *asyh)
{
	switch (asyw->state.fb->width) {
	case  32: asyh->curs.layout = NV917D_HEAD_SET_CONTROL_CURSOR_SIZE_W32_H32; break;
	case  64: asyh->curs.layout = NV917D_HEAD_SET_CONTROL_CURSOR_SIZE_W64_H64; break;
	case 128: asyh->curs.layout = NV917D_HEAD_SET_CONTROL_CURSOR_SIZE_W128_H128; break;
	case 256: asyh->curs.layout = NV917D_HEAD_SET_CONTROL_CURSOR_SIZE_W256_H256; break;
	default:
		return -EINVAL;
	}
	return 0;
}

const struct nv50_head_func
head917d = {
	.view = head907d_view,
	.mode = head907d_mode,
	.olut = head907d_olut,
	.ilut_check = head907d_ilut_check,
	.olut_size = 1024,
	.olut_set = head907d_olut_set,
	.olut_clr = head907d_olut_clr,
	.core_calc = head507d_core_calc,
	.core_set = head907d_core_set,
	.core_clr = head907d_core_clr,
	.curs_layout = head917d_curs_layout,
	.curs_format = head507d_curs_format,
	.curs_set = head917d_curs_set,
	.curs_clr = head907d_curs_clr,
	.base = head917d_base,
	.ovly = head907d_ovly,
	.dither = head917d_dither,
	.procamp = head907d_procamp,
	.or = head907d_or,
};

Annotation

Implementation Notes