diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/fw/acpi.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/acpi.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c index 32d000cffe9f..405038ce98d6 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c @@ -6,6 +6,7 @@ * GPL LICENSE SUMMARY * * Copyright(c) 2017 Intel Deutschland GmbH + * Copyright (C) 2019 Intel Corporation * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as @@ -26,6 +27,7 @@ * BSD LICENSE * * Copyright(c) 2017 Intel Deutschland GmbH + * Copyright (C) 2019 Intel Corporation * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -205,3 +207,33 @@ out: return dflt_pwr_limit; } IWL_EXPORT_SYMBOL(iwl_acpi_get_pwr_limit); + +int iwl_acpi_get_eckv(struct device *dev, u32 *extl_clk) +{ + union acpi_object *wifi_pkg, *data; + int ret; + + data = iwl_acpi_get_object(dev, ACPI_ECKV_METHOD); + if (IS_ERR(data)) + return PTR_ERR(data); + + wifi_pkg = iwl_acpi_get_wifi_pkg(dev, data, ACPI_ECKV_WIFI_DATA_SIZE); + if (IS_ERR(wifi_pkg)) { + ret = PTR_ERR(wifi_pkg); + goto out_free; + } + + if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER) { + ret = -EINVAL; + goto out_free; + } + + *extl_clk = wifi_pkg->package.elements[1].integer.value; + + ret = 0; + +out_free: + kfree(data); + return ret; +} +IWL_EXPORT_SYMBOL(iwl_acpi_get_eckv); |