diff options
| author | Somashekhar(Som) <somashekhar.puttagangaiah@intel.com> | 2024-07-29 20:20:17 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2024-08-27 10:15:15 +0200 |
| commit | b312e357207c53270bd9b99e0bfd5dd9bf183078 (patch) | |
| tree | 663b4e010ae4a6830aa1ede3d1e2b1c89b6e9c2f /drivers/net/wireless/intel/iwlwifi/fw/uefi.c | |
| parent | db9979d5aae8496233a8551320a69a2f9b1b0ac3 (diff) | |
wifi: iwlwifi: Enable channel puncturing for US/CAN from bios
Add support for enabling channel puncturing for US/CAN based
on BIOS configuration through UEFI
Signed-off-by: Somashekhar(Som) <somashekhar.puttagangaiah@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20240729201718.828f3ecf5118.I5561ab8c7cd48ad4e5d6daf21b037bf88c619a4a@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/fw/uefi.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/uefi.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c index fb982d4fe851..754fc5014fbf 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c @@ -729,3 +729,32 @@ out: kfree(data); return ret; } + +int iwl_uefi_get_puncturing(struct iwl_fw_runtime *fwrt) +{ + struct uefi_cnv_var_puncturing_data *data; + /* default value is not enabled if there is any issue in reading + * uefi variable or revision is not supported + */ + int puncturing = 0; + + data = iwl_uefi_get_verified_variable(fwrt->trans, + IWL_UEFI_PUNCTURING_NAME, + "UefiCnvWlanPuncturing", + sizeof(*data), NULL); + if (IS_ERR(data)) + return puncturing; + + if (data->revision != IWL_UEFI_PUNCTURING_REVISION) { + IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI PUNCTURING rev:%d\n", + data->revision); + } else { + puncturing = data->puncturing & IWL_UEFI_PUNCTURING_REV0_MASK; + IWL_DEBUG_RADIO(fwrt, "Loaded puncturing bits from UEFI: %d\n", + puncturing); + } + + kfree(data); + return puncturing; +} +IWL_EXPORT_SYMBOL(iwl_uefi_get_puncturing); |