diff options
| author | Alex Hung <alex.hung@amd.com> | 2026-01-15 03:20:31 +0300 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2026-03-04 15:20:39 +0300 |
| commit | dce5da49f65c718ee5520cf033c664cfac4fd2cf (patch) | |
| tree | 249f8933dbdf5614f3b08dca75f296a8683344b7 /drivers/gpu/drm/amd/display | |
| parent | b7af28b96ddcef1be9bb173143f926534ca4ee94 (diff) | |
| download | linux-dce5da49f65c718ee5520cf033c664cfac4fd2cf.tar.xz | |
drm/amd/display: Fix writeback on DCN 3.2+
[ Upstream commit 9ef84a307582a92ef055ef0bd3db10fd8ac75960 ]
[WHAT]
1. Set no scaling for writeback as they are hardcoded in DCN3.2+.
2. Set no fast plane update for writeback commits.
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Wayne Lin <wayne.lin@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/amd/display')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 19 |
1 files changed, 15 insertions, 4 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 b3cf43eb6e08..b527d5764b76 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -10411,10 +10411,10 @@ static void dm_set_writeback(struct amdgpu_display_manager *dm, wb_info->dwb_params.capture_rate = dwb_capture_rate_0; - wb_info->dwb_params.scaler_taps.h_taps = 4; - wb_info->dwb_params.scaler_taps.v_taps = 4; - wb_info->dwb_params.scaler_taps.h_taps_c = 2; - wb_info->dwb_params.scaler_taps.v_taps_c = 2; + wb_info->dwb_params.scaler_taps.h_taps = 1; + wb_info->dwb_params.scaler_taps.v_taps = 1; + wb_info->dwb_params.scaler_taps.h_taps_c = 1; + wb_info->dwb_params.scaler_taps.v_taps_c = 1; wb_info->dwb_params.subsample_position = DWB_INTERSTITIAL_SUBSAMPLING; wb_info->mcif_buf_params.luma_pitch = afb->base.pitches[0]; @@ -11430,6 +11430,8 @@ static bool should_reset_plane(struct drm_atomic_state *state, struct drm_crtc_state *old_crtc_state, *new_crtc_state; struct dm_crtc_state *old_dm_crtc_state, *new_dm_crtc_state; struct amdgpu_device *adev = drm_to_adev(plane->dev); + struct drm_connector_state *new_con_state; + struct drm_connector *connector; int i; /* @@ -11440,6 +11442,15 @@ static bool should_reset_plane(struct drm_atomic_state *state, state->allow_modeset) return true; + /* Check for writeback commit */ + for_each_new_connector_in_state(state, connector, new_con_state, i) { + if (connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK) + continue; + + if (new_con_state->writeback_job) + return true; + } + if (amdgpu_in_reset(adev) && state->allow_modeset) return true; |