diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/fw/acpi.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/acpi.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c index 72a0a9565371..dd68d382d7de 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c @@ -1318,3 +1318,38 @@ out_free: kfree(data); } IWL_EXPORT_SYMBOL(iwl_acpi_get_phy_filters); + +void iwl_acpi_get_guid_lock_status(struct iwl_fw_runtime *fwrt) +{ + union acpi_object *wifi_pkg, *data; + int tbl_rev; + + data = iwl_acpi_get_object(fwrt->dev, ACPI_GLAI_METHOD); + if (IS_ERR(data)) + return; + + wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, + ACPI_GLAI_WIFI_DATA_SIZE, + &tbl_rev); + if (IS_ERR(wifi_pkg)) + goto out_free; + + if (tbl_rev != 0) { + IWL_DEBUG_RADIO(fwrt, "Invalid GLAI revision: %d\n", tbl_rev); + goto out_free; + } + + if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER || + wifi_pkg->package.elements[1].integer.value > ACPI_GLAI_MAX_STATUS) + goto out_free; + + fwrt->uefi_tables_lock_status = + wifi_pkg->package.elements[1].integer.value; + + IWL_DEBUG_RADIO(fwrt, + "Loaded UEFI WIFI GUID lock status: %d from ACPI\n", + fwrt->uefi_tables_lock_status); +out_free: + kfree(data); +} +IWL_EXPORT_SYMBOL(iwl_acpi_get_guid_lock_status); |