wifi: iwlwifi: Add helper function to extract device ID

Add iwl_trans_get_device_id() to extract the device ID
from the hw_id member in the iwl_trans structure.
hw_id member contains both sub-device ID and device ID,
with the device ID occupying bits 16 to 31.

Signed-off-by: Pagadala Yesu Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250511195137.4411402701f2.I81cde20de05e3bb993977f8d4bbf90707819347f@changeid

diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
index d76caf5bf4c95466407b3833e35e0b8bc65998e0..57a7747c92c44d54ab96da9e05cc7b6621907dda 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
@@ -832,6 +832,8 @@ struct iwl_txq {
  * @hw_crf_id: the device CRF ID
  * @hw_wfpm_id: the device wfpm ID
  * @hw_id: the ID of the device / sub-device
+ *     Bits 0:15 represent the sub-device ID
+ *     Bits 16:31 represent the device ID.
  * @pcie_link_speed: current PCIe link speed (%PCI_EXP_LNKSTA_CLS_*),
  *     only valid for discrete (not integrated) NICs
  * @num_rxqs: number of RX queues allocated by the transport
@@ -1263,4 +1265,9 @@ static inline void iwl_trans_set_info(struct iwl_trans *trans,
        *write = *info;
 }
 
+static inline u16 iwl_trans_get_device_id(struct iwl_trans *trans)
+{
+       return u32_get_bits(trans->info.hw_id, GENMASK(31, 16));
+}
+
 #endif /* __iwl_trans_h__ */