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authorMario Limonciello (AMD) <superm1@kernel.org>2025-10-30 14:39:43 -0500
committerAlex Deucher <alexander.deucher@amd.com>2025-11-04 11:53:05 -0500
commit825df7ff4bb1a383ad4827545e09aec60d230770 (patch)
treed0d2286d2b98b42269624af38cf0b14a2ae6582c
parentff7644faf3529d186861b02957bf9c6b2fceb4c0 (diff)
drm/amd/display: Don't stretch non-native images by default in eDP
commit 978fa2f6d0b12 ("drm/amd/display: Use scaling for non-native resolutions on eDP") started using the GPU scaler hardware to scale when a non-native resolution was picked on eDP. This scaling was done to fill the screen instead of maintain aspect ratio. The idea was supposed to be that if a different scaling behavior is preferred then the compositor would request it. The not following aspect ratio behavior however isn't desirable, so adjust it to follow aspect ratio and still try to fill screen. Note: This will lead to black bars in some cases for non-native resolutions. Compositors can request the previous behavior if desired. Fixes: 978fa2f6d0b1 ("drm/amd/display: Use scaling for non-native resolutions on eDP") Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4538 Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
-rw-r--r--drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 8be4c5a36fd3..5f090c13f224 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -8216,7 +8216,7 @@ static int dm_encoder_helper_atomic_check(struct drm_encoder *encoder,
"mode %dx%d@%dHz is not native, enabling scaling\n",
adjusted_mode->hdisplay, adjusted_mode->vdisplay,
drm_mode_vrefresh(adjusted_mode));
- dm_new_connector_state->scaling = RMX_FULL;
+ dm_new_connector_state->scaling = RMX_ASPECT;
}
return 0;
}