drm/amd/display: Call validate_fbc should_enable_fbc

validate_fbc never fails a modeset. It's simply used to decide whether
to use FBC or not. Calling it validate_fbc might be confusing to some so
rename it to should_enable_fbc.

With that let's also remove the DC_STATUS return code and return bool
and make enable_fbc a void function since we never check it's return
value and probably never want to anyways.

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Roman Li <Roman.Li@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c

@@ -1689,60 +1689,54 @@ static void apply_min_clocks(
 /*
  *  Check if FBC can be enabled
  */
-static enum dc_status validate_fbc(struct dc *dc,
-		struct dc_state *context)
+static bool should_enable_fbc(struct dc *dc,
+			      struct dc_state *context)
 {
-	struct pipe_ctx *pipe_ctx =
-			      &context->res_ctx.pipe_ctx[0];
+	struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[0];
 
 	ASSERT(dc->fbc_compressor);
 
 	/* FBC memory should be allocated */
 	if (!dc->ctx->fbc_gpu_addr)
-		return DC_ERROR_UNEXPECTED;
+		return false;
 
 	/* Only supports single display */
 	if (context->stream_count != 1)
-		return DC_ERROR_UNEXPECTED;
+		return false;
 
 	/* Only supports eDP */
 	if (pipe_ctx->stream->sink->link->connector_signal != SIGNAL_TYPE_EDP)
-		return DC_ERROR_UNEXPECTED;
+		return false;
 
 	/* PSR should not be enabled */
 	if (pipe_ctx->stream->sink->link->psr_enabled)
-		return DC_ERROR_UNEXPECTED;
+		return false;
 
 	/* Nothing to compress */
 	if (!pipe_ctx->plane_state)
-		return DC_ERROR_UNEXPECTED;
+		return false;
 
 	/* Only for non-linear tiling */
 	if (pipe_ctx->plane_state->tiling_info.gfx8.array_mode == DC_ARRAY_LINEAR_GENERAL)
-		return DC_ERROR_UNEXPECTED;
+		return false;
 
-	return DC_OK;
+	return true;
 }
 
 /*
  *  Enable FBC
  */
-static enum dc_status enable_fbc(struct dc *dc,
-		struct dc_state *context)
+static void enable_fbc(struct dc *dc,
+		       struct dc_state *context)
 {
-	enum dc_status status = validate_fbc(dc, context);
-
-	if (status == DC_OK) {
+	if (should_enable_fbc(dc, context)) {
 		/* Program GRPH COMPRESSED ADDRESS and PITCH */
 		struct compr_addr_and_pitch_params params = {0, 0, 0};
 		struct compressor *compr = dc->fbc_compressor;
-		struct pipe_ctx *pipe_ctx =
-				      &context->res_ctx.pipe_ctx[0];
+		struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[0];
 
-		params.source_view_width =
-				pipe_ctx->stream->timing.h_addressable;
-		params.source_view_height =
-				pipe_ctx->stream->timing.v_addressable;
+		params.source_view_width = pipe_ctx->stream->timing.h_addressable;
+		params.source_view_height = pipe_ctx->stream->timing.v_addressable;
 
 		compr->compr_surface_address.quad_part = dc->ctx->fbc_gpu_addr;
 
@@ -1751,7 +1745,6 @@ static enum dc_status enable_fbc(struct dc *dc,
 
 		compr->funcs->enable_fbc(compr, &params);
 	}
-	return status;
 }
 #endif