drm/amd/display: Call dpmm when checking mode support

[WHY]
In check_mode_supported, we should validate that the required clocks
can be successfully mapped to DPM levels.

This ensures we only apply dynamic ODM optimizations to modes that
are supported without dynamic ODM optimizations to begin with.

[HOW]
Call dpmm to check that the display config can successfully be
mapped to a DPM level.
Reviewed-by: Chaitanya Dhere <chaitanya.dhere@amd.com>
Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Shen <george.shen@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_wrapper.c

@@ -257,6 +257,7 @@ static bool dml21_check_mode_support(const struct dc *in_dc, struct dc_state *co
 
 	mode_support->dml2_instance = dml_init->dml2_instance;
 	dml21_map_dc_state_into_dml_display_cfg(in_dc, context, dml_ctx);
+	dml_ctx->v21.mode_programming.dml2_instance->scratch.build_mode_programming_locals.mode_programming_params.programming = dml_ctx->v21.mode_programming.programming;
 	is_supported = dml2_check_mode_supported(mode_support);
 	if (!is_supported)
 		return false;

drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_top/dml_top.c

@@ -96,10 +96,15 @@ bool dml2_check_mode_supported(struct dml2_check_mode_supported_in_out *in_out)
 {
 	struct dml2_instance *dml = (struct dml2_instance *)in_out->dml2_instance;
 	struct dml2_check_mode_supported_locals *l = &dml->scratch.check_mode_supported_locals;
+	/* Borrow the build_mode_programming_locals programming struct for DPMM call. */
+	struct dml2_display_cfg_programming *dpmm_programming = dml->scratch.build_mode_programming_locals.mode_programming_params.programming;
 
 	bool result = false;
 	bool mcache_success = false;
 
+	if (dpmm_programming)
+		memset(dpmm_programming, 0, sizeof(struct dml2_display_cfg_programming));
+
 	setup_unoptimized_display_config_with_meta(dml, &l->base_display_config_with_meta, in_out->display_config);
 
 	l->mode_support_params.instance = &dml->core_instance;
@@ -122,6 +127,18 @@ bool dml2_check_mode_supported(struct dml2_check_mode_supported_in_out *in_out)
 		mcache_success = dml2_top_optimization_perform_optimization_phase(&l->optimization_phase_locals, &mcache_phase);
 	}
 
+	/*
+	 * Call DPMM to map all requirements to minimum clock state
+	 */
+	if (result && dpmm_programming) {
+		l->dppm_map_mode_params.min_clk_table = &dml->min_clk_table;
+		l->dppm_map_mode_params.display_cfg = &l->base_display_config_with_meta;
+		l->dppm_map_mode_params.programming = dpmm_programming;
+		l->dppm_map_mode_params.soc_bb = &dml->soc_bbox;
+		l->dppm_map_mode_params.ip = &dml->core_instance.clean_me_up.mode_lib.ip;
+		result = dml->dpmm_instance.map_mode_to_soc_dpm(&l->dppm_map_mode_params);
+	}
+
 	in_out->is_supported = mcache_success;
 	result = result && in_out->is_supported;
 

drivers/gpu/drm/amd/display/dc/dml2/dml21/src/inc/dml2_internal_shared_types.h

@@ -870,6 +870,7 @@ struct dml2_check_mode_supported_locals {
 	struct dml2_optimization_phase_locals optimization_phase_locals;
 	struct display_configuation_with_meta base_display_config_with_meta;
 	struct display_configuation_with_meta optimized_display_config_with_meta;
+	struct dml2_dpmm_map_mode_to_soc_dpm_params_in_out dppm_map_mode_params;
 };
 
 struct optimization_init_function_params {