drm/amd/display: Drop dc_commit_state in favor of dc_commit_streams

[Why & How]
There are two functions responsible for handling the DC commit state:
dc_commit_state and dc_commit_streams. Both have the same goal, but
dc_commit_streams surpess dc_commit_state in terms of completeness. For
this reason, maintaining these two functions makes maintainability
unnecessarily complicated. This commit replaces the old dc_commit_state
in favor of dc_commit_streams, and removes the old dc_commit_state.
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -2486,7 +2486,7 @@ static enum dc_status amdgpu_dm_commit_zero_streams(struct dc *dc)
 			goto fail;
 	}
 
-	res = dc_commit_state(dc, context);
+	res = dc_commit_streams(dc, context->streams, context->stream_count);
 
 fail:
 	dc_release_state(context);
@@ -2745,7 +2745,7 @@ static int dm_resume(void *handle)
 			dc_enable_dmub_outbox(adev->dm.dc);
 		}
 
-		WARN_ON(!dc_commit_state(dm->dc, dc_state));
+		WARN_ON(!dc_commit_streams(dm->dc, dc_state->streams, dc_state->stream_count));
 
 		dm_gpureset_commit_state(dm->cached_dc_state, dm);
 
@@ -8482,7 +8482,7 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
 
 		dm_enable_per_frame_crtc_master_sync(dc_state);
 		mutex_lock(&dm->dc_lock);
-		WARN_ON(!dc_commit_state(dm->dc, dc_state));
+		WARN_ON(!dc_commit_streams(dm->dc, dc_state->streams, dc_state->stream_count));
 
 		/* Allow idle optimization when vblank count is 0 for display off */
 		if (dm->active_vblank_irq_count == 0)

drivers/gpu/drm/amd/display/dc/core/dc.c

@@ -2061,53 +2061,6 @@ enum dc_status dc_commit_streams(struct dc *dc,
 	return res;
 }
 
-/* TODO: When the transition to the new commit sequence is done, remove this
- * function in favor of dc_commit_streams. */
-bool dc_commit_state(struct dc *dc, struct dc_state *context)
-{
-	enum dc_status result = DC_ERROR_UNEXPECTED;
-	int i;
-
-	/* TODO: Since change commit sequence can have a huge impact,
-	 * we decided to only enable it for DCN3x. However, as soon as
-	 * we get more confident about this change we'll need to enable
-	 * the new sequence for all ASICs. */
-	if (dc->ctx->dce_version >= DCN_VERSION_3_2) {
-		result = dc_commit_streams(dc, context->streams, context->stream_count);
-		return result == DC_OK;
-	}
-
-	if (!streams_changed(dc, context->streams, context->stream_count)) {
-		return DC_OK;
-	}
-
-	DC_LOG_DC("%s: %d streams\n",
-				__func__, context->stream_count);
-
-	for (i = 0; i < context->stream_count; i++) {
-		struct dc_stream_state *stream = context->streams[i];
-
-		dc_stream_log(dc, stream);
-	}
-
-	/*
-	 * Previous validation was perfomred with fast_validation = true and
-	 * the full DML state required for hardware programming was skipped.
-	 *
-	 * Re-validate here to calculate these parameters / watermarks.
-	 */
-	result = dc_validate_global_state(dc, context, false);
-	if (result != DC_OK) {
-		DC_LOG_ERROR("DC commit global validation failure: %s (%d)",
-			     dc_status_to_str(result), result);
-		return result;
-	}
-
-	result = dc_commit_state_no_check(dc, context);
-
-	return (result == DC_OK);
-}
-
 bool dc_acquire_release_mpc_3dlut(
 		struct dc *dc, bool acquire,
 		struct dc_stream_state *stream,

drivers/gpu/drm/amd/display/dc/dc.h

@@ -1360,10 +1360,6 @@ enum dc_status dc_commit_streams(struct dc *dc,
 				 struct dc_stream_state *streams[],
 				 uint8_t stream_count);
 
-/* TODO: When the transition to the new commit sequence is done, remove this
- * function in favor of dc_commit_streams. */
-bool dc_commit_state(struct dc *dc, struct dc_state *context);
-
 struct dc_state *dc_create_state(struct dc *dc);
 struct dc_state *dc_copy_state(struct dc_state *src_ctx);
 void dc_retain_state(struct dc_state *context);