On Wed, May 20, 2020 at 8:25 PM Alex Deucher <alexdeucher@xxxxxxxxx> wrote:
On Wed, May 20, 2020 at 12:39 PM Harry Wentland <hwentlan@xxxxxxx> wrote:
>
> On 2020-05-15 1:19 a.m., Mario Kleiner wrote:
> > Testing on a Polaris11 gpu with DCE-11.2 suggests that it
> > seems to work fine there, so optimistically enable it for
> > DCE-11 and later.
> >
> > Signed-off-by: Mario Kleiner <mario.kleiner.de@xxxxxxxxx>
> > ---
> > drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c | 2 +-
> > drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c | 2 +-
> > drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c | 2 +-
> > 3 files changed, 3 insertions(+), 3 deletions(-)
> >
> > 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 9597fc79d7fa..a043ddae5149 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
>
> Carrizo (DCE 11.0) has a HW bug where FP16 scaling doesn't work. I
> recommend we leave it off here.
I'll drop this hunk for upstream.
Alex
Ok, no fixup patch needed from myself, thanks Alex. Does the scaling bug refer to scaling the planes (those max_downscale_factor / max_upscale_factor definitions seem to be unused) or the fp16 values itself?
What about DCE 8 and DCE 10 hw capabilities wrt. fp16? Should i send fp16 enable patches for those as well?
-mario
>
> Harry
>
> > },
> >
> > .max_upscale_factor = {
> > diff --git a/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c b/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c
> > index 4a7796de2ff5..51b3fe502670 100644
> > --- a/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c
> > +++ b/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c
> > @@ -411,7 +411,7 @@ 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/dce120/dce120_resource.c b/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c
> > index 9a9764cbd78d..8f362e8c1787 100644
> > --- a/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c
> > +++ b/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c
> > @@ -516,7 +516,7 @@ static const struct dc_plane_cap plane_cap = {
> > .pixel_format_support = {
> > .argb8888 = true,
> > .nv12 = false,
> > - .fp16 = false
> > + .fp16 = true
> > },
> >
> > .max_upscale_factor = {
> >
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