On 2020-12-28 1:50 p.m., Mario Kleiner wrote:
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.
Signed-off-by: Mario Kleiner mario.kleiner.de@gmail.com
Reviewed-by: Nicholas Kazlauskas nicholas.kazlauskas@amd.com
Regards, Nicholas Kazlauskas
drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c | 2 +- drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c | 2 +- drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c b/drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c index 8ab9d6c79808..f20ed05a5050 100644 --- a/drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c @@ -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 = {
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c index 3f63822b8e28..af208f9bd03b 100644 --- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c @@ -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 = {
diff --git a/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c b/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c index 390a0fa37239..26fe25caa281 100644 --- a/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c @@ -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 = {