Commit 4b6b7437 authored Dec 28, 2020 by Mario Kleiner Committed by Alex Deucher Jan 05, 2021

drm/amd/display: Enable fp16 also on DCE-8/10/11.



The hw supports fp16, this is not only useful for HDR,
but also for standard dynamic range displays, because
it allows to get more precise color reproduction with
about 11 - 12 bpc linear precision in the unorm range
0.0 - 1.0.

Working fp16 scanout+display (and HDR over HDMI) was
verified on a DCE-8 asic, so i assume that the more
recent DCE-10/11 will work equally well, now that
format-specific plane scaling constraints are properly
enforced, e.g., the inability of fp16 to scale on older
hw like DCE-8 to DCE-11.

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent 6300b3bd

drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -385,7 +385,7 @@ static const struct dc_plane_cap plane_cap = {
		.pixel_format_support = {
		.argb8888 = true,
		.nv12 = false,
		.fp16 = false
		.fp16 = true
		},

		.max_upscale_factor = {

drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -410,7 +410,7 @@ static const struct dc_plane_cap plane_cap = {
		.pixel_format_support = {
		.argb8888 = true,
		.nv12 = false,
		.fp16 = false
		.fp16 = true
		},

		.max_upscale_factor = {

drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -402,7 +402,7 @@ static const struct dc_plane_cap plane_cap = {
		.pixel_format_support = {
		.argb8888 = true,
		.nv12 = false,
		.fp16 = false
		.fp16 = true
		},

		.max_upscale_factor = {