[Why]
We can issue HDR static metadata as part of stream updates for
non-modesets as long as we force a modeset when entering or exiting HDR.
This avoids unnecessary blanking for simple metadata updates.
[How]
When changing scaling and abm for the stream also check if HDR has
changed and send the stream update. This will only happen in non-modeset
cases.
Cc: Harry Wentland <harry.wentland@xxxxxxx>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
---
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 34 +++++++++++++++----
1 file changed, 28 insertions(+), 6 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 eb31acca7ed6..443b13ec268d 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3978,9 +3978,16 @@ amdgpu_dm_connector_atomic_check(struct drm_connector *conn,
* DC considers the stream backends changed if the
* static metadata changes. Forcing the modeset also
* gives a simple way for userspace to switch from
- * 8bpc to 10bpc when setting the metadata.
+ * 8bpc to 10bpc when setting the metadata to enter
+ * or exit HDR.
+ *
+ * Changing the static metadata after it's been
+ * set is permissible, however. So only force a
+ * modeset if we're entering or exiting HDR.
*/
- new_crtc_state->mode_changed = true;
+ new_crtc_state->mode_changed =
+ !old_con_state->hdr_output_metadata ||
+ !new_con_state->hdr_output_metadata;
}
return 0;
@@ -5881,7 +5888,9 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
struct amdgpu_crtc *acrtc = to_amdgpu_crtc(dm_new_con_state->base.crtc);
struct dc_surface_update dummy_updates[MAX_SURFACES];
struct dc_stream_update stream_update;
+ struct dc_info_packet hdr_packet;
struct dc_stream_status *status = NULL;
+ bool abm_changed, hdr_changed, scaling_changed;
memset(&dummy_updates, 0, sizeof(dummy_updates));
memset(&stream_update, 0, sizeof(stream_update));
@@ -5898,11 +5907,19 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
dm_old_crtc_state = to_dm_crtc_state(old_crtc_state);
- if (!is_scaling_state_different(dm_new_con_state, dm_old_con_state) &&
- (dm_new_crtc_state->abm_level == dm_old_crtc_state->abm_level))
+ scaling_changed = is_scaling_state_different(dm_new_con_state,
+ dm_old_con_state);
+
+ abm_changed = dm_new_crtc_state->abm_level !=
+ dm_old_crtc_state->abm_level;
+
+ hdr_changed =
+ is_hdr_metadata_different(old_con_state, new_con_state);
+
+ if (!scaling_changed && !abm_changed && !hdr_changed)
continue;
- if (is_scaling_state_different(dm_new_con_state, dm_old_con_state)) {
+ if (scaling_changed) {
update_stream_scaling_settings(&dm_new_con_state->base.crtc->mode,
dm_new_con_state, (struct dc_stream_state *)dm_new_crtc_state->stream);
@@ -5910,12 +5927,17 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
stream_update.dst = dm_new_crtc_state->stream->dst;
}
- if (dm_new_crtc_state->abm_level != dm_old_crtc_state->abm_level) {
+ if (abm_changed) {
dm_new_crtc_state->stream->abm_level = dm_new_crtc_state->abm_level;
stream_update.abm_level = &dm_new_crtc_state->abm_level;
}
+ if (hdr_changed) {
+ fill_hdr_info_packet(new_con_state, &hdr_packet);
+ stream_update.hdr_static_metadata = &hdr_packet;
+ }
+
status = dc_stream_get_status(dm_new_crtc_state->stream);
WARN_ON(!status);
WARN_ON(!status->plane_count);
--
2.17.1
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