diff options
| author | Nikola Cornij <nikola.cornij@amd.com> | 2021-05-06 22:46:52 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-05-19 17:59:06 -0400 |
| commit | 84c63d040938f64a7dc195696301166e75231bf5 (patch) | |
| tree | 6c8dc9e88c566a6eec33d57420459c2aa3e54739 | |
| parent | d07f6ca923ea0927a1024dfccafc5b53b61cfecc (diff) | |
drm/amd/display: Use the correct max downscaling value for DCN3.x family
[why]
As per spec, DCN3.x can do 6:1 downscaling and DCN2.x can do 4:1. The
max downscaling limit value for DCN2.x is 250, which means it's
calculated as 1000 / 4 = 250. For DCN3.x this then gives 1000 / 6 = 167.
[how]
Set maximum downscaling limit to 167 for DCN3.x
Signed-off-by: Nikola Cornij <nikola.cornij@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c | 7 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c | 7 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c | 7 |
3 files changed, 12 insertions, 9 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c index 4a5fa23d8e7b..5fcc2e64305d 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c @@ -826,10 +826,11 @@ static const struct dc_plane_cap plane_cap = { .fp16 = 16000 }, + /* 6:1 downscaling ratio: 1000/6 = 166.666 */ .max_downscale_factor = { - .argb8888 = 600, - .nv12 = 600, - .fp16 = 600 + .argb8888 = 167, + .nv12 = 167, + .fp16 = 167 } }; diff --git a/drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c b/drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c index 5b54b7fc5105..472696f949ac 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c @@ -843,10 +843,11 @@ static const struct dc_plane_cap plane_cap = { .fp16 = 16000 }, + /* 6:1 downscaling ratio: 1000/6 = 166.666 */ .max_downscale_factor = { - .argb8888 = 600, - .nv12 = 600, - .fp16 = 600 + .argb8888 = 167, + .nv12 = 167, + .fp16 = 167 }, 64, 64 diff --git a/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c b/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c index fc2dea243d1b..a33f0365329b 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c @@ -284,10 +284,11 @@ static const struct dc_plane_cap plane_cap = { .nv12 = 16000, .fp16 = 16000 }, + /* 6:1 downscaling ratio: 1000/6 = 166.666 */ .max_downscale_factor = { - .argb8888 = 600, - .nv12 = 600, - .fp16 = 600 + .argb8888 = 167, + .nv12 = 167, + .fp16 = 167 }, 16, 16 |