diff options
| author | Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com> | 2023-09-21 11:58:02 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2023-09-25 09:14:59 +0200 |
| commit | 2f199ba8776adb5e6e138559acd88f508193cf37 (patch) | |
| tree | 82bc3e51fdd5d2008e0419b144f90408396bc9e9 /drivers/net/wireless/intel/iwlwifi/fw/acpi.c | |
| parent | 89dc0a27e3fabfd58ce812d3b2c23217e8ca07f9 (diff) | |
wifi: iwlwifi: implement enable/disable for China 2022 regulatory
China 2022 regulations are enabled by default. Disable only when
disabled in BIOS or the firmware don't support this capability. If the
firmware has this capability, read BIOS configuration data in
function 4 using ACPI API and send GRP_REGULATORY_LARI_CONFIG_CHANGE_CMD
to the firmware. Any error while reading BIOS data results in enablement
of china 2022 regulations.
Signed-off-by: Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230921110726.ba7cb3003e53.If5a180a59ee85ed4a4c9146cfeff841c25b81066@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/fw/acpi.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/acpi.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c index b26f90e52256..e83ce797a68b 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c @@ -1011,6 +1011,7 @@ __le32 iwl_acpi_get_lari_config_bitmap(struct iwl_fw_runtime *fwrt) { int ret; u8 value; + u32 val; __le32 config_bitmap = 0; /* @@ -1039,6 +1040,23 @@ __le32 iwl_acpi_get_lari_config_bitmap(struct iwl_fw_runtime *fwrt) cpu_to_le32(LARI_CONFIG_CHANGE_ETSI_TO_DISABLED_MSK); } + if (fw_has_capa(&fwrt->fw->ucode_capa, + IWL_UCODE_TLV_CAPA_CHINA_22_REG_SUPPORT)) { + /* + ** Evaluate func 'DSM_FUNC_REGULATORY_CONFIG' + */ + ret = iwl_acpi_get_dsm_u32(fwrt->dev, 0, + DSM_FUNC_REGULATORY_CONFIG, + &iwl_guid, &val); + /* + * China 2022 enable if the BIOS object does not exist or + * if it is enabled in BIOS. + */ + if (ret < 0 || val & DSM_MASK_CHINA_22_REG) + config_bitmap |= + cpu_to_le32(LARI_CONFIG_ENABLE_CHINA_22_REG_SUPPORT_MSK); + } + return config_bitmap; } IWL_EXPORT_SYMBOL(iwl_acpi_get_lari_config_bitmap); |