iwlwifi: mvm: save and export regdb blob from the NVM

Sometimes we want to debug issues related to the regulatory blob in
the NVM.  To make that easier, add a debugfs entry to export it
together with the other nvm blobs we export.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c

@@ -2028,6 +2028,9 @@ int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
 	if (!debugfs_create_blob("nvm_phy_sku", 0400,
 				 mvm->debugfs_dir, &mvm->nvm_phy_sku_blob))
 		goto err;
+	if (!debugfs_create_blob("nvm_reg", S_IRUSR,
+				 mvm->debugfs_dir, &mvm->nvm_reg_blob))
+		goto err;
 
 	debugfs_create_file("mem", 0600, dbgfs_dir, mvm, &iwl_dbgfs_mem_ops);
 

drivers/net/wireless/intel/iwlwifi/mvm/mvm.h

@@ -965,6 +965,7 @@ struct iwl_mvm {
 	struct debugfs_blob_wrapper nvm_calib_blob;
 	struct debugfs_blob_wrapper nvm_prod_blob;
 	struct debugfs_blob_wrapper nvm_phy_sku_blob;
+	struct debugfs_blob_wrapper nvm_reg_blob;
 
 	struct iwl_mvm_frame_stats drv_rx_stats;
 	spinlock_t drv_stats_lock;

drivers/net/wireless/intel/iwlwifi/mvm/nvm.c

@@ -416,6 +416,11 @@ int iwl_nvm_init(struct iwl_mvm *mvm)
 			mvm->nvm_phy_sku_blob.data = temp;
 			mvm->nvm_phy_sku_blob.size  = ret;
 			break;
+		case NVM_SECTION_TYPE_REGULATORY_SDP:
+		case NVM_SECTION_TYPE_REGULATORY:
+			mvm->nvm_reg_blob.data = temp;
+			mvm->nvm_reg_blob.size  = ret;
+			break;
 		default:
 			if (section == mvm->cfg->nvm_hw_section_num) {
 				mvm->nvm_hw_blob.data = temp;