drm/amd/display: adding reading OEM init_data to dcn3

why:
missing OEM data to control graphics card functions

how:
load it into init_data. copied over from dcn2 implementation.
copied destruction sequence as well.
Signed-off-by: Martin Leung <martin.leung@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c

@@ -60,6 +60,7 @@
 #include "dml/display_mode_vba.h"
 #include "dcn30/dcn30_dccg.h"
 #include "dcn10/dcn10_resource.h"
+#include "dc_link_ddc.h"
 #include "dce/dce_panel_cntl.h"
 
 #include "dcn30/dcn30_dwb.h"
@@ -1321,6 +1322,9 @@ static void dcn30_resource_destruct(struct dcn30_resource_pool *pool)
 
 	if (pool->base.dccg != NULL)
 		dcn_dccg_destroy(&pool->base.dccg);
+
+	if (pool->base.oem_device != NULL)
+		dal_ddc_service_destroy(&pool->base.oem_device);
 }
 
 static struct hubp *dcn30_hubp_create(
@@ -2589,6 +2593,7 @@ static bool dcn30_resource_construct(
 	int i;
 	struct dc_context *ctx = dc->ctx;
 	struct irq_service_init_data init_data;
+	struct ddc_service_init_data ddc_init_data;
 
 	ctx->dc_bios->regs = &bios_regs;
 
@@ -2856,6 +2861,17 @@ static bool dcn30_resource_construct(
 
 	dc->cap_funcs = cap_funcs;
 
+	if (dc->ctx->dc_bios->fw_info.oem_i2c_present) {
+		ddc_init_data.ctx = dc->ctx;
+		ddc_init_data.link = NULL;
+		ddc_init_data.id.id = dc->ctx->dc_bios->fw_info.oem_i2c_obj_id;
+		ddc_init_data.id.enum_id = 0;
+		ddc_init_data.id.type = OBJECT_TYPE_GENERIC;
+		pool->base.oem_device = dal_ddc_service_create(&ddc_init_data);
+	} else {
+		pool->base.oem_device = NULL;
+	}
+
 	return true;
 
 create_fail: