drm/amd/display: Add writeback enable field (wb_enabled)
[WHAT]
Add a new field to keep track whether a crtc is previously
writeback-enabled.
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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 311f815..b45b248 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -8693,9 +8693,13 @@ static void amdgpu_dm_commit_streams(struct drm_atomic_state *state,
if (acrtc)
old_crtc_state = drm_atomic_get_old_crtc_state(state, &acrtc->base);
+ if (!acrtc->wb_enabled)
+ continue;
+
dm_old_crtc_state = to_dm_crtc_state(old_crtc_state);
dm_clear_writeback(dm, dm_old_crtc_state);
+ acrtc->wb_enabled = false;
}
for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state,
@@ -9273,9 +9277,13 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
if (acrtc)
new_crtc_state = drm_atomic_get_new_crtc_state(state, &acrtc->base);
+ if (acrtc->wb_enabled)
+ continue;
+
dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
dm_set_writeback(dm, dm_new_crtc_state, connector, new_con_state);
+ acrtc->wb_enabled = true;
}
/* Update audio instances for each connector. */
