Commit 84c63d04 authored by Nikola Cornij's avatar Nikola Cornij Committed by Alex Deucher

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: default avatarNikola Cornij <nikola.cornij@amd.com>
Reviewed-by: default avatarCharlene Liu <Charlene.Liu@amd.com>
Reviewed-by: default avatarHarry Wentland <Harry.Wentland@amd.com>
Acked-by: default avatarStylon Wang <stylon.wang@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent d07f6ca9
...@@ -826,10 +826,11 @@ static const struct dc_plane_cap plane_cap = { ...@@ -826,10 +826,11 @@ static const struct dc_plane_cap plane_cap = {
.fp16 = 16000 .fp16 = 16000
}, },
/* 6:1 downscaling ratio: 1000/6 = 166.666 */
.max_downscale_factor = { .max_downscale_factor = {
.argb8888 = 600, .argb8888 = 167,
.nv12 = 600, .nv12 = 167,
.fp16 = 600 .fp16 = 167
} }
}; };
......
...@@ -843,10 +843,11 @@ static const struct dc_plane_cap plane_cap = { ...@@ -843,10 +843,11 @@ static const struct dc_plane_cap plane_cap = {
.fp16 = 16000 .fp16 = 16000
}, },
/* 6:1 downscaling ratio: 1000/6 = 166.666 */
.max_downscale_factor = { .max_downscale_factor = {
.argb8888 = 600, .argb8888 = 167,
.nv12 = 600, .nv12 = 167,
.fp16 = 600 .fp16 = 167
}, },
64, 64,
64 64
......
...@@ -284,10 +284,11 @@ static const struct dc_plane_cap plane_cap = { ...@@ -284,10 +284,11 @@ static const struct dc_plane_cap plane_cap = {
.nv12 = 16000, .nv12 = 16000,
.fp16 = 16000 .fp16 = 16000
}, },
/* 6:1 downscaling ratio: 1000/6 = 166.666 */
.max_downscale_factor = { .max_downscale_factor = {
.argb8888 = 600, .argb8888 = 167,
.nv12 = 600, .nv12 = 167,
.fp16 = 600 .fp16 = 167
}, },
16, 16,
16 16
......
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