drivers/gpu/drm/amd/display/dc/hubbub/dcn20/dcn20_hubbub.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/display/dc/hubbub/dcn20/dcn20_hubbub.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/display/dc/hubbub/dcn20/dcn20_hubbub.c
Extension
.c
Size
21994 bytes
Lines
693
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 (bytes_per_element == 1) {
			*segment_order_horz = segment_order__contiguous;
			*segment_order_vert = segment_order__na;
			return true;
		}
		if (bytes_per_element == 2) {
			*segment_order_horz = segment_order__non_contiguous;
			*segment_order_vert = segment_order__contiguous;
			return true;
		}
		if (bytes_per_element == 4) {
			*segment_order_horz = segment_order__non_contiguous;
			*segment_order_vert = segment_order__contiguous;
			return true;
		}
		if (bytes_per_element == 8) {
			*segment_order_horz = segment_order__na;
			*segment_order_vert = segment_order__contiguous;
			return true;
		}
	}
	if (render_swizzle) {
		if (bytes_per_element == 2) {
			*segment_order_horz = segment_order__contiguous;
			*segment_order_vert = segment_order__contiguous;
			return true;
		}
		if (bytes_per_element == 4) {
			*segment_order_horz = segment_order__non_contiguous;
			*segment_order_vert = segment_order__contiguous;
			return true;
		}
		if (bytes_per_element == 8) {
			*segment_order_horz = segment_order__contiguous;
			*segment_order_vert = segment_order__non_contiguous;
			return true;
		}
	}
	if (display_swizzle && bytes_per_element == 8) {
		*segment_order_horz = segment_order__contiguous;
		*segment_order_vert = segment_order__non_contiguous;
		return true;
	}

	return false;
}

bool hubbub2_dcc_support_pixel_format(
		enum surface_pixel_format format,
		unsigned int *bytes_per_element)
{
	/* DML: get_bytes_per_element */
	switch (format) {
	case SURFACE_PIXEL_FORMAT_GRPH_ARGB1555:
	case SURFACE_PIXEL_FORMAT_GRPH_RGB565:
		*bytes_per_element = 2;
		return true;
	case SURFACE_PIXEL_FORMAT_GRPH_ARGB8888:
	case SURFACE_PIXEL_FORMAT_GRPH_ABGR8888:
	case SURFACE_PIXEL_FORMAT_GRPH_ARGB2101010:
	case SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010:
	case SURFACE_PIXEL_FORMAT_GRPH_RGB111110_FIX:
	case SURFACE_PIXEL_FORMAT_GRPH_BGR101111_FIX:
	case SURFACE_PIXEL_FORMAT_GRPH_RGB111110_FLOAT:
	case SURFACE_PIXEL_FORMAT_GRPH_BGR101111_FLOAT:
	case SURFACE_PIXEL_FORMAT_GRPH_RGBE:
	case SURFACE_PIXEL_FORMAT_GRPH_RGBE_ALPHA:
		*bytes_per_element = 4;
		return true;
	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616:
	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F:
	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:
		*bytes_per_element = 8;
		return true;
	default:
		return false;
	}
}

static void hubbub2_get_blk256_size(unsigned int *blk256_width, unsigned int *blk256_height,
		unsigned int bytes_per_element)
{
	/* copied from DML.  might want to refactor DML to leverage from DML */
	/* DML : get_blk256_size */
	if (bytes_per_element == 1) {
		*blk256_width = 16;
		*blk256_height = 16;
	} else if (bytes_per_element == 2) {
		*blk256_width = 16;

Annotation

Implementation Notes