diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/fw.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/fw.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c index a845233d14a3..bce3cf5fab67 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c @@ -998,10 +998,14 @@ static int iwl_mvm_config_ltr(struct iwl_mvm *mvm) #ifdef CONFIG_ACPI #define ACPI_WRDS_METHOD "WRDS" #define ACPI_EWRD_METHOD "EWRD" +#define ACPI_WGDS_METHOD "WGDS" #define ACPI_WIFI_DOMAIN (0x07) #define ACPI_WRDS_WIFI_DATA_SIZE (IWL_MVM_SAR_TABLE_SIZE + 2) #define ACPI_EWRD_WIFI_DATA_SIZE ((IWL_MVM_SAR_PROFILE_NUM - 1) * \ IWL_MVM_SAR_TABLE_SIZE + 3) +#define ACPI_WGDS_WIFI_DATA_SIZE 18 +#define ACPI_WGDS_NUM_BANDS 2 +#define ACPI_WGDS_TABLE_SIZE 3 static int iwl_mvm_sar_set_profile(struct iwl_mvm *mvm, union acpi_object *table, @@ -1203,6 +1207,61 @@ out_free: return ret; } +static int iwl_mvm_sar_get_wgds_table(struct iwl_mvm *mvm, + struct iwl_mvm_geo_table *geo_table) +{ + union acpi_object *wifi_pkg; + acpi_handle root_handle; + acpi_handle handle; + struct acpi_buffer wgds = {ACPI_ALLOCATE_BUFFER, NULL}; + acpi_status status; + int i, ret; + + root_handle = ACPI_HANDLE(mvm->dev); + if (!root_handle) { + IWL_DEBUG_RADIO(mvm, + "Could not retrieve root port ACPI handle\n"); + return -ENOENT; + } + + /* Get the method's handle */ + status = acpi_get_handle(root_handle, (acpi_string)ACPI_WGDS_METHOD, + &handle); + if (ACPI_FAILURE(status)) { + IWL_DEBUG_RADIO(mvm, "WGDS method not found\n"); + return -ENOENT; + } + + /* Call WGDS with no arguments */ + status = acpi_evaluate_object(handle, NULL, NULL, &wgds); + if (ACPI_FAILURE(status)) { + IWL_DEBUG_RADIO(mvm, "WGDS invocation failed (0x%x)\n", status); + return -ENOENT; + } + + wifi_pkg = iwl_mvm_sar_find_wifi_pkg(mvm, wgds.pointer, + ACPI_WGDS_WIFI_DATA_SIZE); + if (IS_ERR(wifi_pkg)) { + ret = PTR_ERR(wifi_pkg); + goto out_free; + } + + for (i = 0; i < ACPI_WGDS_WIFI_DATA_SIZE; i++) { + union acpi_object *entry; + + entry = &wifi_pkg->package.elements[i + 1]; + if ((entry->type != ACPI_TYPE_INTEGER) || + (entry->integer.value > U8_MAX)) + return -EINVAL; + + geo_table->values[i] = entry->integer.value; + } + ret = 0; +out_free: + kfree(wgds.pointer); + return ret; +} + int iwl_mvm_sar_select_profile(struct iwl_mvm *mvm, int prof_a, int prof_b) { struct iwl_dev_tx_power_cmd cmd = { @@ -1256,6 +1315,50 @@ int iwl_mvm_sar_select_profile(struct iwl_mvm *mvm, int prof_a, int prof_b) return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd); } +static int iwl_mvm_sar_geo_init(struct iwl_mvm *mvm) +{ + struct iwl_mvm_geo_table geo_table; + struct iwl_geo_tx_power_profiles_cmd cmd = { + .ops = cpu_to_le32(IWL_PER_CHAIN_OFFSET_SET_TABLES), + }; + int ret, i, j, idx; + u16 cmd_wide_id = WIDE_ID(PHY_OPS_GROUP, GEO_TX_POWER_LIMIT); + + ret = iwl_mvm_sar_get_wgds_table(mvm, &geo_table); + if (ret < 0) { + IWL_DEBUG_RADIO(mvm, + "Geo SAR BIOS table invalid or unavailable. (%d)\n", + ret); + /* we don't fail if the table is not available */ + return 0; + } + + IWL_DEBUG_RADIO(mvm, "Sending GEO_TX_POWER_LIMIT\n"); + + BUILD_BUG_ON(IWL_NUM_GEO_PROFILES * ACPI_WGDS_NUM_BANDS * + ACPI_WGDS_TABLE_SIZE != ACPI_WGDS_WIFI_DATA_SIZE); + + for (i = 0; i < IWL_NUM_GEO_PROFILES; i++) { + struct iwl_per_chain_offset *chain = + (struct iwl_per_chain_offset *)&cmd.table[i]; + + for (j = 0; j < ACPI_WGDS_NUM_BANDS; j++) { + u8 *value; + + idx = i * ACPI_WGDS_NUM_BANDS * ACPI_WGDS_TABLE_SIZE + + j * ACPI_WGDS_TABLE_SIZE; + value = &geo_table.values[idx]; + chain[j].max_tx_power = cpu_to_le16(value[0]); + chain[j].chain_a = value[1]; + chain[j].chain_b = value[2]; + IWL_DEBUG_RADIO(mvm, + "SAR geographic profile[%d] Band[%d]: chain A = %d chain B = %d max_tx_power = %d\n", + i, j, value[1], value[2], value[0]); + } + } + return iwl_mvm_send_cmd_pdu(mvm, cmd_wide_id, 0, sizeof(cmd), &cmd); +} + #else /* CONFIG_ACPI */ static int iwl_mvm_sar_get_wrds_table(struct iwl_mvm *mvm) { @@ -1266,6 +1369,11 @@ static int iwl_mvm_sar_get_ewrd_table(struct iwl_mvm *mvm) { return -ENOENT; } + +static int iwl_mvm_sar_geo_init(struct iwl_mvm *mvm) +{ + return 0; +} #endif /* CONFIG_ACPI */ static int iwl_mvm_sar_init(struct iwl_mvm *mvm) @@ -1488,6 +1596,10 @@ int iwl_mvm_up(struct iwl_mvm *mvm) if (ret) goto error; + ret = iwl_mvm_sar_geo_init(mvm); + if (ret) + goto error; + IWL_DEBUG_INFO(mvm, "RT uCode started.\n"); return 0; error: |