platform/x86/intel/tpmi: ADD tpmi external interface for tpmi feature drivers

Add interface to get resources and platform data. This will avoid code
duplication. These interfaces includes:
- Get resource count
- Get resource at an index

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/20230202010738.2186174-7-srinivas.pandruvada@linux.intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/platform/x86/intel/tpmi.c

@@ -153,6 +153,28 @@ struct intel_tpmi_plat_info *tpmi_get_platform_data(struct auxiliary_device *aux
 }
 EXPORT_SYMBOL_NS_GPL(tpmi_get_platform_data, INTEL_TPMI);
 
+int tpmi_get_resource_count(struct auxiliary_device *auxdev)
+{
+	struct intel_vsec_device *vsec_dev = auxdev_to_ivdev(auxdev);
+
+	if (vsec_dev)
+		return vsec_dev->num_resources;
+
+	return 0;
+}
+EXPORT_SYMBOL_NS_GPL(tpmi_get_resource_count, INTEL_TPMI);
+
+struct resource *tpmi_get_resource_at_index(struct auxiliary_device *auxdev, int index)
+{
+	struct intel_vsec_device *vsec_dev = auxdev_to_ivdev(auxdev);
+
+	if (vsec_dev && index < vsec_dev->num_resources)
+		return &vsec_dev->resource[index];
+
+	return NULL;
+}
+EXPORT_SYMBOL_NS_GPL(tpmi_get_resource_at_index, INTEL_TPMI);
+
 static const char *intel_tpmi_name(enum intel_tpmi_id id)
 {
 	switch (id) {

include/linux/intel_tpmi.h

@@ -24,5 +24,7 @@ struct intel_tpmi_plat_info {
 };
 
 struct intel_tpmi_plat_info *tpmi_get_platform_data(struct auxiliary_device *auxdev);
+struct resource *tpmi_get_resource_at_index(struct auxiliary_device *auxdev, int index);
+int tpmi_get_resource_count(struct auxiliary_device *auxdev);
 
 #endif