[PATCH v2 3/3] wifi: iwlwifi: dt: use Device Tree as fallback BIOS configuration source

[Avinash Bhatt <avinash.bhatt@intel.com>]

When neither UEFI variables nor ACPI methods provide a BIOS
configuration table, fall back to Device Tree. This preserves the
existing UEFI -> ACPI priority order and extends it with DT as the
lowest-priority source.

Signed-off-by: Avinash Bhatt <avinash.bhatt@intel.com>
---
 drivers/net/wireless/intel/iwlwifi/fw/regulatory.c  | 3 +++
 drivers/net/wireless/intel/iwlwifi/mld/mld.c        | 3 +++
 drivers/net/wireless/intel/iwlwifi/mld/regulatory.c | 5 ++++-
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/regulatory.c b/drivers/net/wireless/intel/iwlwifi/fw/regulatory.c
index 55128caac7ed..10bb4d2f64cf 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/regulatory.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/regulatory.c
@@ -8,6 +8,7 @@
 #include "regulatory.h"
 #include "fw/runtime.h"
 #include "fw/uefi.h"
+#include "fw/dt.h"
 
 #define GET_BIOS_TABLE(__name, ...)					\
 do {									\
@@ -16,6 +17,8 @@ do {									\
 		ret = iwl_uefi_get_ ## __name(__VA_ARGS__);		\
 	if (ret < 0)							\
 		ret = iwl_acpi_get_ ## __name(__VA_ARGS__);		\
+	if (ret < 0)							\
+		ret = iwl_dt_get_ ## __name(__VA_ARGS__);		\
 	return ret;							\
 } while (0)
 
diff --git a/drivers/net/wireless/intel/iwlwifi/mld/mld.c b/drivers/net/wireless/intel/iwlwifi/mld/mld.c
index 495e9d8f3af6..a3e93112caff 100644
--- a/drivers/net/wireless/intel/iwlwifi/mld/mld.c
+++ b/drivers/net/wireless/intel/iwlwifi/mld/mld.c
@@ -12,6 +12,7 @@
 #include "fw/api/coex.h"
 #include "fw/dbg.h"
 #include "fw/uefi.h"
+#include "fw/dt.h"
 
 #include "mld.h"
 #include "mlo.h"
@@ -418,6 +419,8 @@ iwl_op_mode_mld_start(struct iwl_trans *trans, const struct iwl_rf_cfg *cfg,
 	iwl_mld_get_bios_tables(mld);
 	iwl_uefi_get_sgom_table(trans, &mld->fwrt);
 	mld->bios_enable_puncturing = iwl_uefi_get_puncturing(&mld->fwrt);
+	if (!mld->bios_enable_puncturing)
+		mld->bios_enable_puncturing = iwl_dt_get_puncturing(&mld->fwrt);
 
 	iwl_mld_hw_set_regulatory(mld);
 
diff --git a/drivers/net/wireless/intel/iwlwifi/mld/regulatory.c b/drivers/net/wireless/intel/iwlwifi/mld/regulatory.c
index 659243ada86c..1c7d2136b2e3 100644
--- a/drivers/net/wireless/intel/iwlwifi/mld/regulatory.c
+++ b/drivers/net/wireless/intel/iwlwifi/mld/regulatory.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 /*
- * Copyright (C) 2024-2025 Intel Corporation
+ * Copyright (C) 2024-2026 Intel Corporation
  */
 
 #include <linux/dmi.h>
@@ -8,6 +8,7 @@
 #include "fw/regulatory.h"
 #include "fw/acpi.h"
 #include "fw/uefi.h"
+#include "fw/dt.h"
 
 #include "regulatory.h"
 #include "mld.h"
@@ -64,6 +65,8 @@ void iwl_mld_get_bios_tables(struct iwl_mld *mld)
 	}
 
 	iwl_uefi_get_uats_table(mld->trans, &mld->fwrt);
+	if (!mld->fwrt.ap_type_cmd_valid)
+		iwl_dt_get_uats_table(&mld->fwrt);
 	iwl_uefi_get_uneb_table(mld->trans, &mld->fwrt);
 
 	iwl_bios_get_phy_filters(&mld->fwrt);
-- 
2.34.1