From 20935f3e646e687f32f044d9d75a4a8637c086db Mon Sep 17 00:00:00 2001 From: Miri Korenblit Date: Thu, 1 Feb 2024 16:17:32 +0200 Subject: wifi: iwlwifi: read ECKV table from UEFI Try to read the ECKV table from UEFI first, and if the WIFI UEFI tables are unlocked or the table doesn't exist - try to read it from ACPI. Change iwl_acpi_get_eckv() to receive fwrt as argument so it will be the same as all iwl_acpi_get_x() functions, so it could be generated by the macro. While at it - move the reading of ECKV to INIT stage. There is no reason to read it each time we load the FW. Signed-off-by: Miri Korenblit Reviewed-by: Gregory Greenman Link: https://msgid.link/20240201155157.d4937cc00727.I36e5fc7f7850229b9b377c80b5203aa47137c97c@changeid Signed-off-by: Johannes Berg --- drivers/net/wireless/intel/iwlwifi/fw/uefi.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'drivers/net/wireless/intel/iwlwifi/fw/uefi.c') diff --git a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c index cd897ad504d6..4454fae84d1f 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c @@ -652,3 +652,25 @@ out: kfree(data); return ret; } + +int iwl_uefi_get_eckv(struct iwl_fw_runtime *fwrt, u32 *extl_clk) +{ + struct uefi_cnv_var_eckv *data; + int ret = 0; + + data = iwl_uefi_get_verified_variable(fwrt->trans, IWL_UEFI_ECKV_NAME, + "ECKV", sizeof(*data), NULL); + if (IS_ERR(data)) + return -EINVAL; + + if (data->revision != IWL_UEFI_ECKV_REVISION) { + ret = -EINVAL; + IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI WRDD revision:%d\n", + data->revision); + goto out; + } + *extl_clk = data->ext_clock_valid; +out: + kfree(data); + return ret; +} -- cgit v1.2.3-70-g09d2