diff options
Diffstat (limited to 'src/drivers/intel/wifi/wifi.c')
| -rw-r--r-- | src/drivers/intel/wifi/wifi.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/drivers/intel/wifi/wifi.c b/src/drivers/intel/wifi/wifi.c index 789d0d5431..06bc54c788 100644 --- a/src/drivers/intel/wifi/wifi.c +++ b/src/drivers/intel/wifi/wifi.c @@ -20,6 +20,7 @@ #include <device/device.h> #include <device/pci.h> #include <device/pci_ids.h> +#include <sar.h> #include <smbios.h> #include <string.h> #include <wrdd.h> @@ -59,6 +60,72 @@ static int smbios_write_wifi(struct device *dev, int *handle, #endif #if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES) +static void emit_sar_acpi_structures(void) +{ + int i, j, package_size; + struct wifi_sar_limits sar_limits; + + /* Retrieve the sar limits data */ + if (get_wifi_sar_limits(&sar_limits) < 0) { + printk(BIOS_ERR, "Error: failed from getting SAR limits!\n"); + return; + } + + /* + * Name ("WRDS", Package () { + * Revision, + * Package () { + * Domain Type, // 0x7:WiFi + * WiFi SAR BIOS, // BIOS SAR Enable/disable + * SAR Table Set // Set#1 of SAR Table (10 bytes) + * } + * }) + */ + acpigen_write_name("WRDS"); + acpigen_write_package(2); + acpigen_write_dword(WRDS_REVISION); + /* Emit 'Domain Type' + 'WiFi SAR BIOS' + 10 bytes for Set#1 */ + package_size = 1 + 1 + BYTES_PER_SAR_LIMIT; + acpigen_write_package(package_size); + acpigen_write_dword(WRDS_DOMAIN_TYPE_WIFI); + acpigen_write_dword(CONFIG_SAR_ENABLE); + for (i = 0; i < BYTES_PER_SAR_LIMIT; i++) + acpigen_write_byte(sar_limits.sar_limit[0][i]); + acpigen_pop_len(); + acpigen_pop_len(); + + /* + * Name ("EWRD", Package () { + * Revision, + * Package () { + * Domain Type, // 0x7:WiFi + * Dynamic SAR Enable, // Dynamic SAR Enable/disable + * Extended SAR sets, // Number of optional SAR table sets + * SAR Table Set, // Set#2 of SAR Table (10 bytes) + * SAR Table Set, // Set#3 of SAR Table (10 bytes) + * SAR Table Set // Set#4 of SAR Table (10 bytes) + * } + * }) + */ + acpigen_write_name("EWRD"); + acpigen_write_package(2); + acpigen_write_dword(EWRD_REVISION); + /* + * Emit 'Domain Type' + "Dynamic SAR Enable' + 'Extended SAR sets' + * + number of bytes for Set#2 & 3 & 4 + */ + package_size = 1 + 1 + 1 + (NUM_SAR_LIMITS - 1) * BYTES_PER_SAR_LIMIT; + acpigen_write_package(package_size); + acpigen_write_dword(EWRD_DOMAIN_TYPE_WIFI); + acpigen_write_dword(CONFIG_DSAR_ENABLE); + acpigen_write_dword(CONFIG_DSAR_SET_NUM); + for (i = 1; i < NUM_SAR_LIMITS; i++) + for (j = 0; j < BYTES_PER_SAR_LIMIT; j++) + acpigen_write_byte(sar_limits.sar_limit[i][j]); + acpigen_pop_len(); + acpigen_pop_len(); +} + static void intel_wifi_fill_ssdt(struct device *dev) { struct drivers_intel_wifi_config *config = dev->chip_info; @@ -105,6 +172,10 @@ static void intel_wifi_fill_ssdt(struct device *dev) acpigen_pop_len(); } + /* Fill Wifi sar related ACPI structures */ + if (IS_ENABLED(CONFIG_USE_SAR)) + emit_sar_acpi_structures(); + acpigen_pop_len(); /* Device */ acpigen_pop_len(); /* Scope */ |