drm/amd/display: drop dc_validate_guaranteed

Block FP16 scaling in validate_resources codepath.
Signed-off-by: Julian Parkin <jparkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@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/core/dc_resource.c

@@ -1599,18 +1599,6 @@ enum dc_status dc_remove_stream_from_ctx(
 	return DC_OK;
 }
 
-static void copy_pipe_ctx(
-	const struct pipe_ctx *from_pipe_ctx, struct pipe_ctx *to_pipe_ctx)
-{
-	struct dc_plane_state *plane_state = to_pipe_ctx->plane_state;
-	struct dc_stream_state *stream = to_pipe_ctx->stream;
-
-	*to_pipe_ctx = *from_pipe_ctx;
-	to_pipe_ctx->stream = stream;
-	if (plane_state != NULL)
-		to_pipe_ctx->plane_state = plane_state;
-}
-
 static struct dc_stream_state *find_pll_sharable_stream(
 		struct dc_stream_state *stream_needs_pll,
 		struct dc_state *context)
@@ -1752,26 +1740,6 @@ enum dc_status resource_map_pool_resources(
 	return DC_ERROR_UNEXPECTED;
 }
 
-/* first stream in the context is used to populate the rest */
-void validate_guaranteed_copy_streams(
-		struct dc_state *context,
-		int max_streams)
-{
-	int i;
-
-	for (i = 1; i < max_streams; i++) {
-		context->streams[i] = context->streams[0];
-
-		copy_pipe_ctx(&context->res_ctx.pipe_ctx[0],
-			      &context->res_ctx.pipe_ctx[i]);
-		context->res_ctx.pipe_ctx[i].stream =
-				context->res_ctx.pipe_ctx[0].stream;
-
-		dc_stream_retain(context->streams[i]);
-		context->stream_count++;
-	}
-}
-
 void dc_resource_state_copy_construct_current(
 		const struct dc *dc,
 		struct dc_state *dst_ctx)

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

@@ -208,14 +208,6 @@ bool dc_add_all_planes_for_stream(
 
 enum dc_status dc_validate_stream(struct dc *dc, struct dc_stream_state *stream);
 
-/*
- * This function takes a stream and checks if it is guaranteed to be supported.
- * Guaranteed means that MAX_COFUNC similar streams are supported.
- *
- * After this call:
- *   No hardware is programmed for call.  Only validation is done.
- */
-
 /*
  * Set up streams and links associated to drive sinks
  * The streams parameter is an absolute set of all active streams.

drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c

@@ -733,38 +733,6 @@ enum dc_status dce100_add_stream_to_ctx(
 	return result;
 }
 
-enum dc_status dce100_validate_guaranteed(
-		struct dc  *dc,
-		struct dc_stream_state *dc_stream,
-		struct dc_state *context)
-{
-	enum dc_status result = DC_ERROR_UNEXPECTED;
-
-	context->streams[0] = dc_stream;
-	dc_stream_retain(context->streams[0]);
-	context->stream_count++;
-
-	result = resource_map_pool_resources(dc, context, dc_stream);
-
-	if (result == DC_OK)
-		result = resource_map_clock_resources(dc, context, dc_stream);
-
-	if (result == DC_OK)
-		result = build_mapped_resource(dc, context, dc_stream);
-
-	if (result == DC_OK) {
-		validate_guaranteed_copy_streams(
-				context, dc->caps.max_streams);
-		result = resource_build_scaling_params_for_context(dc, context);
-	}
-
-	if (result == DC_OK)
-		if (!dce100_validate_bandwidth(dc, context))
-			result = DC_FAIL_BANDWIDTH_VALIDATE;
-
-	return result;
-}
-
 static void dce100_destroy_resource_pool(struct resource_pool **pool)
 {
 	struct dce110_resource_pool *dce110_pool = TO_DCE110_RES_POOL(*pool);
@@ -786,7 +754,6 @@ enum dc_status dce100_validate_plane(const struct dc_plane_state *plane_state, s
 static const struct resource_funcs dce100_res_pool_funcs = {
 	.destroy = dce100_destroy_resource_pool,
 	.link_enc_create = dce100_link_encoder_create,
-	.validate_guaranteed = dce100_validate_guaranteed,
 	.validate_bandwidth = dce100_validate_bandwidth,
 	.validate_plane = dce100_validate_plane,
 	.add_stream_to_ctx = dce100_add_stream_to_ctx,

drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c

@@ -930,38 +930,6 @@ static enum dc_status dce110_add_stream_to_ctx(
 	return result;
 }
 
-static enum dc_status dce110_validate_guaranteed(
-		struct dc *dc,
-		struct dc_stream_state *dc_stream,
-		struct dc_state *context)
-{
-	enum dc_status result = DC_ERROR_UNEXPECTED;
-
-	context->streams[0] = dc_stream;
-	dc_stream_retain(context->streams[0]);
-	context->stream_count++;
-
-	result = resource_map_pool_resources(dc, context, dc_stream);
-
-	if (result == DC_OK)
-		result = resource_map_clock_resources(dc, context, dc_stream);
-
-	if (result == DC_OK)
-		result = build_mapped_resource(dc, context, dc_stream);
-
-	if (result == DC_OK) {
-		validate_guaranteed_copy_streams(
-				context, dc->caps.max_streams);
-		result = resource_build_scaling_params_for_context(dc, context);
-	}
-
-	if (result == DC_OK)
-		if (!dce110_validate_bandwidth(dc, context))
-			result = DC_FAIL_BANDWIDTH_VALIDATE;
-
-	return result;
-}
-
 static struct pipe_ctx *dce110_acquire_underlay(
 		struct dc_state *context,
 		const struct resource_pool *pool,
@@ -1036,7 +1004,6 @@ static void dce110_destroy_resource_pool(struct resource_pool **pool)
 static const struct resource_funcs dce110_res_pool_funcs = {
 	.destroy = dce110_destroy_resource_pool,
 	.link_enc_create = dce110_link_encoder_create,
-	.validate_guaranteed = dce110_validate_guaranteed,
 	.validate_bandwidth = dce110_validate_bandwidth,
 	.validate_plane = dce110_validate_plane,
 	.acquire_idle_pipe_for_layer = dce110_acquire_underlay,

drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c

@@ -867,38 +867,6 @@ enum dc_status dce112_add_stream_to_ctx(
 	return result;
 }
 
-enum dc_status dce112_validate_guaranteed(
-		struct dc *dc,
-		struct dc_stream_state *stream,
-		struct dc_state *context)
-{
-	enum dc_status result = DC_ERROR_UNEXPECTED;
-
-	context->streams[0] = stream;
-	dc_stream_retain(context->streams[0]);
-	context->stream_count++;
-
-	result = resource_map_pool_resources(dc, context, stream);
-
-	if (result == DC_OK)
-		result = resource_map_phy_clock_resources(dc, context, stream);
-
-	if (result == DC_OK)
-		result = build_mapped_resource(dc, context, stream);
-
-	if (result == DC_OK) {
-		validate_guaranteed_copy_streams(
-				context, dc->caps.max_streams);
-		result = resource_build_scaling_params_for_context(dc, context);
-	}
-
-	if (result == DC_OK)
-		if (!dce112_validate_bandwidth(dc, context))
-			result = DC_FAIL_BANDWIDTH_VALIDATE;
-
-	return result;
-}
-
 enum dc_status dce112_validate_global(
 		struct dc *dc,
 		struct dc_state *context)
@@ -921,7 +889,6 @@ static void dce112_destroy_resource_pool(struct resource_pool **pool)
 static const struct resource_funcs dce112_res_pool_funcs = {
 	.destroy = dce112_destroy_resource_pool,
 	.link_enc_create = dce112_link_encoder_create,
-	.validate_guaranteed = dce112_validate_guaranteed,
 	.validate_bandwidth = dce112_validate_bandwidth,
 	.validate_plane = dce100_validate_plane,
 	.add_stream_to_ctx = dce112_add_stream_to_ctx,

drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.h

@@ -42,11 +42,6 @@ enum dc_status dce112_validate_with_context(
 		struct dc_state *context,
 		struct dc_state *old_context);
 
-enum dc_status dce112_validate_guaranteed(
-		struct dc *dc,
-		struct dc_stream_state *dc_stream,
-		struct dc_state *context);
-
 bool dce112_validate_bandwidth(
 	struct dc *dc,
 	struct dc_state *context);

drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c

@@ -684,7 +684,6 @@ static void dce120_destroy_resource_pool(struct resource_pool **pool)
 static const struct resource_funcs dce120_res_pool_funcs = {
 	.destroy = dce120_destroy_resource_pool,
 	.link_enc_create = dce120_link_encoder_create,
-	.validate_guaranteed = dce112_validate_guaranteed,
 	.validate_bandwidth = dce112_validate_bandwidth,
 	.validate_plane = dce100_validate_plane,
 	.add_stream_to_ctx = dce112_add_stream_to_ctx

drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c

@@ -691,23 +691,6 @@ static void destruct(struct dce110_resource_pool *pool)
 	}
 }
 
-static enum dc_status build_mapped_resource(
-		const struct dc *dc,
-		struct dc_state *context,
-		struct dc_stream_state *stream)
-{
-	struct pipe_ctx *pipe_ctx = resource_get_head_pipe_for_stream(&context->res_ctx, stream);
-
-	if (!pipe_ctx)
-		return DC_ERROR_UNEXPECTED;
-
-	dce110_resource_build_pipe_hw_param(pipe_ctx);
-
-	resource_build_info_frame(pipe_ctx);
-
-	return DC_OK;
-}
-
 bool dce80_validate_bandwidth(
 	struct dc *dc,
 	struct dc_state *context)
@@ -749,37 +732,6 @@ enum dc_status dce80_validate_global(
 	return DC_OK;
 }
 
-enum dc_status dce80_validate_guaranteed(
-		struct dc *dc,
-		struct dc_stream_state *dc_stream,
-		struct dc_state *context)
-{
-	enum dc_status result = DC_ERROR_UNEXPECTED;
-
-	context->streams[0] = dc_stream;
-	dc_stream_retain(context->streams[0]);
-	context->stream_count++;
-
-	result = resource_map_pool_resources(dc, context, dc_stream);
-
-	if (result == DC_OK)
-		result = resource_map_clock_resources(dc, context, dc_stream);
-
-	if (result == DC_OK)
-		result = build_mapped_resource(dc, context, dc_stream);
-
-	if (result == DC_OK) {
-		validate_guaranteed_copy_streams(
-				context, dc->caps.max_streams);
-		result = resource_build_scaling_params_for_context(dc, context);
-	}
-
-	if (result == DC_OK)
-		result = dce80_validate_bandwidth(dc, context);
-
-	return result;
-}
-
 static void dce80_destroy_resource_pool(struct resource_pool **pool)
 {
 	struct dce110_resource_pool *dce110_pool = TO_DCE110_RES_POOL(*pool);
@@ -792,7 +744,6 @@ static void dce80_destroy_resource_pool(struct resource_pool **pool)
 static const struct resource_funcs dce80_res_pool_funcs = {
 	.destroy = dce80_destroy_resource_pool,
 	.link_enc_create = dce80_link_encoder_create,
-	.validate_guaranteed = dce80_validate_guaranteed,
 	.validate_bandwidth = dce80_validate_bandwidth,
 	.validate_plane = dce100_validate_plane,
 	.add_stream_to_ctx = dce100_add_stream_to_ctx,

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.c

@@ -121,6 +121,13 @@ bool dpp_get_optimal_number_of_taps(
 	else
 		pixel_width = scl_data->viewport.width;
 
+	/* Some ASICs does not support  FP16 scaling, so we reject modes require this*/
+	if (scl_data->viewport.width  != scl_data->h_active &&
+		scl_data->viewport.height != scl_data->v_active &&
+		dpp->caps->dscl_data_proc_format == DSCL_DATA_PRCESSING_FIXED_FORMAT &&
+		scl_data->format == PIXEL_FORMAT_FP16)
+		return false;
+
 	/* TODO: add lb check */
 
 	/* No support for programming ratio of 4, drop to 3.99999.. */

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c

@@ -918,36 +918,6 @@ enum dc_status dcn10_add_stream_to_ctx(
 	return result;
 }
 
-enum dc_status dcn10_validate_guaranteed(
-		struct dc *dc,
-		struct dc_stream_state *dc_stream,
-		struct dc_state *context)
-{
-	enum dc_status result = DC_ERROR_UNEXPECTED;
-
-	context->streams[0] = dc_stream;
-	dc_stream_retain(context->streams[0]);
-	context->stream_count++;
-
-	result = resource_map_pool_resources(dc, context, dc_stream);
-
-	if (result == DC_OK)
-		result = resource_map_phy_clock_resources(dc, context, dc_stream);
-
-	if (result == DC_OK)
-		result = build_mapped_resource(dc, context, dc_stream);
-
-	if (result == DC_OK) {
-		validate_guaranteed_copy_streams(
-				context, dc->caps.max_streams);
-		result = resource_build_scaling_params_for_context(dc, context);
-	}
-	if (result == DC_OK && !dcn_validate_bandwidth(dc, context))
-		return DC_FAIL_BANDWIDTH_VALIDATE;
-
-	return result;
-}
-
 static struct pipe_ctx *dcn10_acquire_idle_pipe_for_layer(
 		struct dc_state *context,
 		const struct resource_pool *pool,
@@ -1233,7 +1203,6 @@ static struct dc_cap_funcs cap_funcs = {
 static struct resource_funcs dcn10_res_pool_funcs = {
 	.destroy = dcn10_destroy_resource_pool,
 	.link_enc_create = dcn10_link_encoder_create,
-	.validate_guaranteed = dcn10_validate_guaranteed,
 	.validate_bandwidth = dcn_validate_bandwidth,
 	.acquire_idle_pipe_for_layer = dcn10_acquire_idle_pipe_for_layer,
 	.validate_plane = dcn10_validate_plane,

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

@@ -95,11 +95,6 @@ struct resource_funcs {
 	struct link_encoder *(*link_enc_create)(
 			const struct encoder_init_data *init);
 
-	enum dc_status (*validate_guaranteed)(
-					struct dc *dc,
-					struct dc_stream_state *stream,
-					struct dc_state *context);
-
 	bool (*validate_bandwidth)(
 					struct dc *dc,
 					struct dc_state *context);

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

@@ -139,10 +139,6 @@ bool resource_validate_attach_surfaces(
 		struct dc_state *context,
 		const struct resource_pool *pool);
 
-void validate_guaranteed_copy_streams(
-		struct dc_state *context,
-		int max_streams);
-
 void resource_validate_ctx_update_pointer_after_copy(
 		const struct dc_state *src_ctx,
 		struct dc_state *dst_ctx);