text: /******************************************************************************
   *
   * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
   * Copyright(c) 2015 - 2016 Intel Deutschland GmbH
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   *  * Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *  * Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *  * Neither the name Intel Corporation nor the names of its
   *    contributors may be used to endorse or promote products derived
   *    from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   *****************************************************************************/
  
  #include "src/connectivity/wlan/drivers/third_party/intel/iwlwifi/mvm/mvm.h"
  
  #if 0  // NEEDS_PORTING
  #define IWL_MVM_TEMP_NOTIF_WAIT_TIMEOUT HZ
  
  void iwl_mvm_enter_ctkill(struct iwl_mvm* mvm) {
      struct iwl_mvm_tt_mgmt* tt = &mvm->thermal_throttle;
      uint32_t duration = tt->params.ct_kill_duration;
  
      if (test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status)) { return; }
  
      IWL_ERR(mvm, "Enter CT Kill\n");
      iwl_mvm_set_hw_ctkill_state(mvm, true);
  
      if (!iwl_mvm_is_tt_in_fw(mvm)) {
          tt->throttle = false;
          tt->dynamic_smps = false;
      }
  
      /* Don't schedule an exit work if we're in test mode, since
       * the temperature will not change unless we manually set it
       * again (or disable testing).
       */
      if (!mvm->temperature_test) {
          schedule_delayed_work(&tt->ct_kill_exit, round_jiffies_relative(duration * HZ));
      }
  }
  
  static void iwl_mvm_exit_ctkill(struct iwl_mvm* mvm) {
      if (!test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status)) { return; }
  
      IWL_ERR(mvm, "Exit CT Kill\n");
      iwl_mvm_set_hw_ctkill_state(mvm, false);
  }
  
  void iwl_mvm_tt_temp_changed(struct iwl_mvm* mvm, uint32_t temp) {
      /* ignore the notification if we are in test mode */
      if (mvm->temperature_test) { return; }
  
      if (mvm->temperature == temp) { return; }
  
      mvm->temperature = temp;
      iwl_mvm_tt_handler(mvm);
  }
  
  static int iwl_mvm_temp_notif_parse(struct iwl_mvm* mvm, struct iwl_rx_packet* pkt) {
      struct iwl_dts_measurement_notif_v1* notif_v1;
      int len = iwl_rx_packet_payload_len(pkt);
      int temp;
  
      /* we can use notif_v1 only, because v2 only adds an additional
       * parameter, which is not used in this function.
       */
      if (WARN_ON_ONCE(len < sizeof(*notif_v1))) {
          IWL_ERR(mvm, "Invalid DTS_MEASUREMENT_NOTIFICATION\n");
          return -EINVAL;
      }
  
      notif_v1 = (void*)pkt->data;
  
      temp = le32_to_cpu(notif_v1->temp);
  
      /* shouldn't be negative, but since it's int32_t, make sure it isn't */
      if (WARN_ON_ONCE(temp < 0)) { temp = 0; }
  
      IWL_DEBUG_TEMP(mvm, "DTS_MEASUREMENT_NOTIFICATION - %d\n", temp);
  
      return temp;
  }
  
  static bool iwl_mvm_temp_notif_wait(struct iwl_notif_wait_data* notif_wait,
                                      struct iwl_rx_packet* pkt, void* data) {
      struct iwl_mvm* mvm = container_of(notif_wait, struct iwl_mvm, notif_wait);
      int* temp = data;
      int ret;
  
      ret = iwl_mvm_temp_notif_parse(mvm, pkt);
      if (ret < 0) { return true; }
  
      *temp = ret;
  
      return true;
  }
  
  void iwl_mvm_temp_notif(struct iwl_mvm* mvm, struct iwl_rx_cmd_buffer* rxb) {
      struct iwl_rx_packet* pkt = rxb_addr(rxb);
      struct iwl_dts_measurement_notif_v2* notif_v2;
      int len = iwl_rx_packet_payload_len(pkt);
      int temp;
      uint32_t ths_crossed;
  
      /* the notification is handled synchronously in ctkill, so skip here */
      if (test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status)) { return; }
  
      temp = iwl_mvm_temp_notif_parse(mvm, pkt);
  
      if (!iwl_mvm_is_tt_in_fw(mvm)) {
          if (temp >= 0) { iwl_mvm_tt_temp_changed(mvm, temp); }
          return;
      }
  
      if (WARN_ON_ONCE(len < sizeof(*notif_v2))) {
          IWL_ERR(mvm, "Invalid DTS_MEASUREMENT_NOTIFICATION\n");
          return;
      }
  
      notif_v2 = (void*)pkt->data;
      ths_crossed = le32_to_cpu(notif_v2->threshold_idx);
  
      /* 0xFF in ths_crossed means the notification is not related
       * to a trip, so we can ignore it here.
       */
      if (ths_crossed == 0xFF) { return; }
  
      IWL_DEBUG_TEMP(mvm, "Temp = %d Threshold crossed = %d\n", temp, ths_crossed);
  
  #ifdef CONFIG_THERMAL
      if (WARN_ON(ths_crossed >= IWL_MAX_DTS_TRIPS)) { return; }
  
      if (mvm->tz_device.tzone) {
          struct iwl_mvm_thermal_device* tz_dev = &mvm->tz_device;
  
          thermal_notify_framework(tz_dev->tzone, tz_dev->fw_trips_index[ths_crossed]);
      }
  #endif  /* CONFIG_THERMAL */
  }
  
  void iwl_mvm_ct_kill_notif(struct iwl_mvm* mvm, struct iwl_rx_cmd_buffer* rxb) {
      struct iwl_rx_packet* pkt = rxb_addr(rxb);
      struct ct_kill_notif* notif;
      int len = iwl_rx_packet_payload_len(pkt);
  
      if (WARN_ON_ONCE(len != sizeof(*notif))) {
          IWL_ERR(mvm, "Invalid CT_KILL_NOTIFICATION\n");
          return;
      }
  
      notif = (struct ct_kill_notif*)pkt->data;
      IWL_DEBUG_TEMP(mvm, "CT Kill notification temperature = %d\n", notif->temperature);
  
      iwl_mvm_enter_ctkill(mvm);
  }
  
  static int iwl_mvm_get_temp_cmd(struct iwl_mvm* mvm) {
      struct iwl_dts_measurement_cmd cmd = {
          .flags = cpu_to_le32(DTS_TRIGGER_CMD_FLAGS_TEMP),
      };
      struct iwl_ext_dts_measurement_cmd extcmd = {
          .control_mode = cpu_to_le32(DTS_AUTOMATIC),
      };
      uint32_t cmdid;
  
      cmdid = iwl_cmd_id(CMD_DTS_MEASUREMENT_TRIGGER_WIDE, PHY_OPS_GROUP, 0);
  
      if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_EXTENDED_DTS_MEASURE)) {
          return iwl_mvm_send_cmd_pdu(mvm, cmdid, 0, sizeof(cmd), &cmd);
      }
  
      return iwl_mvm_send_cmd_pdu(mvm, cmdid, 0, sizeof(extcmd), &extcmd);
  }
  
  int iwl_mvm_get_temp(struct iwl_mvm* mvm, int32_t* temp) {
      struct iwl_notification_wait wait_temp_notif;
      static uint16_t temp_notif[] = {WIDE_ID(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE)};
      int ret;
  
      iwl_assert_lock_held(&mvm->mutex);
  
      iwl_init_notification_wait(&mvm->notif_wait, &wait_temp_notif, temp_notif,
                                 ARRAY_SIZE(temp_notif), iwl_mvm_temp_notif_wait, temp);
  
      ret = iwl_mvm_get_temp_cmd(mvm);
      if (ret) {
          IWL_ERR(mvm, "Failed to get the temperature (err=%d)\n", ret);
          iwl_remove_notification(&mvm->notif_wait, &wait_temp_notif);
          return ret;
      }
  
      ret =
          iwl_wait_notification(&mvm->notif_wait, &wait_temp_notif, IWL_MVM_TEMP_NOTIF_WAIT_TIMEOUT);
      if (ret) { IWL_ERR(mvm, "Getting the temperature timed out\n"); }
  
      return ret;
  }
  
  static void check_exit_ctkill(struct work_struct* work) {
      struct iwl_mvm_tt_mgmt* tt;
      struct iwl_mvm* mvm;
      uint32_t duration;
      int32_t temp;
      int ret;
  
      tt = container_of(work, struct iwl_mvm_tt_mgmt, ct_kill_exit.work);
      mvm = container_of(tt, struct iwl_mvm, thermal_throttle);
  
      if (iwl_mvm_is_tt_in_fw(mvm)) {
          iwl_mvm_exit_ctkill(mvm);
  
          return;
      }
  
      duration = tt->params.ct_kill_duration;
  
      mutex_lock(&mvm->mutex);
  
      if (__iwl_mvm_mac_start(mvm)) { goto reschedule; }
  
      /* make sure the device is available for direct read/writes */
      if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_CHECK_CTKILL)) {
          __iwl_mvm_mac_stop(mvm);
          goto reschedule;
      }
  
      ret = iwl_mvm_get_temp(mvm, &temp);
  
      iwl_mvm_unref(mvm, IWL_MVM_REF_CHECK_CTKILL);
  
      __iwl_mvm_mac_stop(mvm);
  
      if (ret) { goto reschedule; }
  
      IWL_DEBUG_TEMP(mvm, "NIC temperature: %d\n", temp);
  
      if (temp <= tt->params.ct_kill_exit) {
          mutex_unlock(&mvm->mutex);
          iwl_mvm_exit_ctkill(mvm);
          return;
      }
  
  reschedule:
      mutex_unlock(&mvm->mutex);
      schedule_delayed_work(&mvm->thermal_throttle.ct_kill_exit, round_jiffies(duration * HZ));
  }
  
  static void iwl_mvm_tt_smps_iterator(void* _data, uint8_t* mac, struct ieee80211_vif* vif) {
      struct iwl_mvm* mvm = _data;
      enum ieee80211_smps_mode smps_mode;
  
      iwl_assert_lock_held(&mvm->mutex);
  
      if (mvm->thermal_throttle.dynamic_smps) {
          smps_mode = IEEE80211_SMPS_DYNAMIC;
      } else {
          smps_mode = IEEE80211_SMPS_AUTOMATIC;
      }
  
      if (vif->type != NL80211_IFTYPE_STATION) { return; }
  
      iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, smps_mode);
  }
  
  static void iwl_mvm_tt_tx_protection(struct iwl_mvm* mvm, bool enable) {
      struct iwl_mvm_sta* mvmsta;
      int i, err;
  
      for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
          mvmsta = iwl_mvm_sta_from_staid_protected(mvm, i);
          if (!mvmsta) { continue; }
  
          if (enable == mvmsta->tt_tx_protection) { continue; }
          err = iwl_mvm_tx_protection(mvm, mvmsta, enable);
          if (err) {
              IWL_ERR(mvm, "Failed to %s Tx protection\n", enable ? "enable" : "disable");
          } else {
              IWL_DEBUG_TEMP(mvm, "%s Tx protection\n", enable ? "Enable" : "Disable");
              mvmsta->tt_tx_protection = enable;
          }
      }
  }
  #endif  // NEEDS_PORTING
  
  void iwl_mvm_tt_tx_backoff(struct iwl_mvm* mvm, uint32_t backoff) {
    struct iwl_host_cmd cmd = {
        .id = REPLY_THERMAL_MNG_BACKOFF,
        .len =
            {
                sizeof(uint32_t),
            },
        .data =
            {
                &backoff,
            },
    };
  
    backoff = MAX(backoff, mvm->thermal_throttle.min_backoff);
  
    if (iwl_mvm_send_cmd(mvm, &cmd) == 0) {
      IWL_DEBUG_TEMP(mvm, "Set Thermal Tx backoff to: %u\n", backoff);
      mvm->thermal_throttle.tx_backoff = backoff;
    } else {
      IWL_ERR(mvm, "Failed to change Thermal Tx backoff\n");
    }
  }
  
  #if 0  // NEEDS_PORTING
  void iwl_mvm_tt_handler(struct iwl_mvm* mvm) {
      struct iwl_tt_params* params = &mvm->thermal_throttle.params;
      struct iwl_mvm_tt_mgmt* tt = &mvm->thermal_throttle;
      int32_t temperature = mvm->temperature;
      bool throttle_enable = false;
      int i;
      uint32_t tx_backoff;
  
      IWL_DEBUG_TEMP(mvm, "NIC temperature: %d\n", mvm->temperature);
  
      if (params->support_ct_kill && temperature >= params->ct_kill_entry) {
          iwl_mvm_enter_ctkill(mvm);
          return;
      }
  
      if (params->support_ct_kill && temperature <= params->ct_kill_exit) {
          iwl_mvm_exit_ctkill(mvm);
          return;
      }
  
      if (params->support_dynamic_smps) {
          if (!tt->dynamic_smps && temperature >= params->dynamic_smps_entry) {
              IWL_DEBUG_TEMP(mvm, "Enable dynamic SMPS\n");
              tt->dynamic_smps = true;
              ieee80211_iterate_active_interfaces_atomic(mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
                                                         iwl_mvm_tt_smps_iterator, mvm);
              throttle_enable = true;
          } else if (tt->dynamic_smps && temperature <= params->dynamic_smps_exit) {
              IWL_DEBUG_TEMP(mvm, "Disable dynamic SMPS\n");
              tt->dynamic_smps = false;
              ieee80211_iterate_active_interfaces_atomic(mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
                                                         iwl_mvm_tt_smps_iterator, mvm);
          }
      }
  
      if (params->support_tx_protection) {
          if (temperature >= params->tx_protection_entry) {
              iwl_mvm_tt_tx_protection(mvm, true);
              throttle_enable = true;
          } else if (temperature <= params->tx_protection_exit) {
              iwl_mvm_tt_tx_protection(mvm, false);
          }
      }
  
      if (params->support_tx_backoff) {
          tx_backoff = tt->min_backoff;
          for (i = 0; i < TT_TX_BACKOFF_SIZE; i++) {
              if (temperature < params->tx_backoff[i].temperature) { break; }
              tx_backoff = max(tt->min_backoff, params->tx_backoff[i].backoff);
          }
          if (tx_backoff != tt->min_backoff) { throttle_enable = true; }
          if (tt->tx_backoff != tx_backoff) { iwl_mvm_tt_tx_backoff(mvm, tx_backoff); }
      }
  
      if (!tt->throttle && throttle_enable) {
          IWL_WARN(mvm, "Due to high temperature thermal throttling initiated\n");
          tt->throttle = true;
      } else if (tt->throttle && !tt->dynamic_smps && tt->tx_backoff == tt->min_backoff &&
                 temperature <= params->tx_protection_exit) {
          IWL_WARN(mvm, "Temperature is back to normal thermal throttling stopped\n");
          tt->throttle = false;
      }
  }
  
  static const struct iwl_tt_params iwl_mvm_default_tt_params = {
      .ct_kill_entry = 118,
      .ct_kill_exit = 96,
      .ct_kill_duration = 5,
      .dynamic_smps_entry = 114,
      .dynamic_smps_exit = 110,
      .tx_protection_entry = 114,
      .tx_protection_exit = 108,
      .tx_backoff =
          {
              {.temperature = 112, .backoff = 200},
              {.temperature = 113, .backoff = 600},
              {.temperature = 114, .backoff = 1200},
              {.temperature = 115, .backoff = 2000},
              {.temperature = 116, .backoff = 4000},
              {.temperature = 117, .backoff = 10000},
          },
      .support_ct_kill = true,
      .support_dynamic_smps = true,
      .support_tx_protection = true,
      .support_tx_backoff = true,
  };
  
  /* budget in mWatt */
  static const uint32_t iwl_mvm_cdev_budgets[] = {
      2000, /* cooling state 0 */
      1800, /* cooling state 1 */
      1600, /* cooling state 2 */
      1400, /* cooling state 3 */
      1200, /* cooling state 4 */
      1000, /* cooling state 5 */
      900,  /* cooling state 6 */
      800,  /* cooling state 7 */
      700,  /* cooling state 8 */
      650,  /* cooling state 9 */
      600,  /* cooling state 10 */
      550,  /* cooling state 11 */
      500,  /* cooling state 12 */
      450,  /* cooling state 13 */
      400,  /* cooling state 14 */
      350,  /* cooling state 15 */
      300,  /* cooling state 16 */
      250,  /* cooling state 17 */
      200,  /* cooling state 18 */
      150,  /* cooling state 19 */
  };
  
  int iwl_mvm_ctdp_command(struct iwl_mvm* mvm, uint32_t op, uint32_t state) {
      struct iwl_mvm_ctdp_cmd cmd = {
          .operation = cpu_to_le32(op),
          .budget = cpu_to_le32(iwl_mvm_cdev_budgets[state]),
          .window_size = 0,
      };
      int ret;
      uint32_t status;
  
      iwl_assert_lock_held(&mvm->mutex);
  
      status = 0;
      ret = iwl_mvm_send_cmd_pdu_status(mvm, WIDE_ID(PHY_OPS_GROUP, CTDP_CONFIG_CMD), sizeof(cmd),
                                        &cmd, &status);
  
      if (ret) {
          IWL_ERR(mvm, "cTDP command failed (err=%d)\n", ret);
          return ret;
      }
  
      switch (op) {
      case CTDP_CMD_OPERATION_START:
  #ifdef CONFIG_THERMAL
          mvm->cooling_dev.cur_state = state;
  #endif /* CONFIG_THERMAL */
          break;
      case CTDP_CMD_OPERATION_REPORT:
          IWL_DEBUG_TEMP(mvm, "cTDP avg energy in mWatt = %d\n", status);
          /* when the function is called with CTDP_CMD_OPERATION_REPORT
           * option the function should return the average budget value
           * that is received from the FW.
           * The budget can't be less or equal to 0, so it's possible
           * to distinguish between error values and budgets.
           */
          return status;
      case CTDP_CMD_OPERATION_STOP:
          IWL_DEBUG_TEMP(mvm, "cTDP stopped successfully\n");
          break;
      }
  
      return 0;
  }
  
  #ifdef CONFIG_THERMAL
  static int compare_temps(const void* a, const void* b) {
      return ((int16_t)le16_to_cpu(*(__le16*)a) - (int16_t)le16_to_cpu(*(__le16*)b));
  }
  
  int iwl_mvm_send_temp_report_ths_cmd(struct iwl_mvm* mvm) {
      struct temp_report_ths_cmd cmd = {0};
      int ret, i, j, idx = 0;
  
      iwl_assert_lock_held(&mvm->mutex);
  
      if (!mvm->tz_device.tzone) { return -EINVAL; }
  
      /* The driver holds array of temperature trips that are unsorted
       * and uncompressed, the FW should get it compressed and sorted
       */
  
      /* compress temp_trips to cmd array, remove uninitialized values*/
      for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) {
          if (mvm->tz_device.temp_trips[i] != S16_MIN) {
              cmd.thresholds[idx++] = cpu_to_le16(mvm->tz_device.temp_trips[i]);
          }
      }
      cmd.num_temps = cpu_to_le32(idx);
  
      if (!idx) { goto send; }
  
      /*sort cmd array*/
      sort(cmd.thresholds, idx, sizeof(int16_t), compare_temps, NULL);
  
      /* we should save the indexes of trips because we sort
       * and compress the orginal array
       */
      for (i = 0; i < idx; i++) {
          for (j = 0; j < IWL_MAX_DTS_TRIPS; j++) {
              if (le16_to_cpu(cmd.thresholds[i]) == mvm->tz_device.temp_trips[j]) {
                  mvm->tz_device.fw_trips_index[i] = j;
              }
          }
      }
  
  send:
      ret = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(PHY_OPS_GROUP, TEMP_REPORTING_THRESHOLDS_CMD), 0,
                                 sizeof(cmd), &cmd);
      if (ret) { IWL_ERR(mvm, "TEMP_REPORT_THS_CMD command failed (err=%d)\n", ret); }
  
      return ret;
  }
  
  static int iwl_mvm_tzone_get_temp(struct thermal_zone_device* device, int* temperature) {
      struct iwl_mvm* mvm = (struct iwl_mvm*)device->devdata;
      int ret;
      int temp;
  
      mutex_lock(&mvm->mutex);
  
      if (!iwl_mvm_firmware_running(mvm) || mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR) {
          ret = -ENODATA;
          goto out;
      }
  
      ret = iwl_mvm_get_temp(mvm, &temp);
      if (ret) { goto out; }
  
      *temperature = temp * 1000;
  
  out:
      mutex_unlock(&mvm->mutex);
      return ret;
  }
  
  static int iwl_mvm_tzone_get_trip_temp(struct thermal_zone_device* device, int trip, int* temp) {
      struct iwl_mvm* mvm = (struct iwl_mvm*)device->devdata;
  
      if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS) { return -EINVAL; }
  
      *temp = mvm->tz_device.temp_trips[trip] * 1000;
  
      return 0;
  }
  
  static int iwl_mvm_tzone_get_trip_type(struct thermal_zone_device* device, int trip,
                                         enum thermal_trip_type* type) {
      if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS) { return -EINVAL; }
  
      *type = THERMAL_TRIP_PASSIVE;
  
      return 0;
  }
  
  static int iwl_mvm_tzone_set_trip_temp(struct thermal_zone_device* device, int trip, int temp) {
      struct iwl_mvm* mvm = (struct iwl_mvm*)device->devdata;
      struct iwl_mvm_thermal_device* tzone;
      int i, ret;
      int16_t temperature;
  
      mutex_lock(&mvm->mutex);
  
      if (!iwl_mvm_firmware_running(mvm) || mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR) {
          ret = -EIO;
          goto out;
      }
  
      if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS) {
          ret = -EINVAL;
          goto out;
      }
  
      if ((temp / 1000) > S16_MAX) {
          ret = -EINVAL;
          goto out;
      }
  
      temperature = (int16_t)(temp / 1000);
      tzone = &mvm->tz_device;
  
      if (!tzone) {
          ret = -EIO;
          goto out;
      }
  
      /* no updates*/
      if (tzone->temp_trips[trip] == temperature) {
          ret = 0;
          goto out;
      }
  
      /* already existing temperature */
      for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) {
          if (tzone->temp_trips[i] == temperature) {
              ret = -EINVAL;
              goto out;
          }
      }
  
      tzone->temp_trips[trip] = temperature;
  
      ret = iwl_mvm_send_temp_report_ths_cmd(mvm);
  out:
      mutex_unlock(&mvm->mutex);
      return ret;
  }
  
  static struct thermal_zone_device_ops tzone_ops = {
      .get_temp = iwl_mvm_tzone_get_temp,
      .get_trip_temp = iwl_mvm_tzone_get_trip_temp,
      .get_trip_type = iwl_mvm_tzone_get_trip_type,
      .set_trip_temp = iwl_mvm_tzone_set_trip_temp,
  };
  
  /* make all trips writable */
  #define IWL_WRITABLE_TRIPS_MSK (BIT(IWL_MAX_DTS_TRIPS) - 1)
  
  static void iwl_mvm_thermal_zone_register(struct iwl_mvm* mvm) {
      int i;
      char name[] = "iwlwifi";
  
      if (!iwl_mvm_is_tt_in_fw(mvm)) {
          mvm->tz_device.tzone = NULL;
  
          return;
      }
  
      BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH);
  
      mvm->tz_device.tzone = thermal_zone_device_register(
          name, IWL_MAX_DTS_TRIPS, IWL_WRITABLE_TRIPS_MSK, mvm, &tzone_ops, NULL, 0, 0);
      if (IS_ERR(mvm->tz_device.tzone)) {
          IWL_DEBUG_TEMP(mvm, "Failed to register to thermal zone (err = %ld)\n",
                         PTR_ERR(mvm->tz_device.tzone));
          mvm->tz_device.tzone = NULL;
          return;
      }
  
      /* 0 is a valid temperature,
       * so initialize the array with S16_MIN which invalid temperature
       */
      for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) {
          mvm->tz_device.temp_trips[i] = S16_MIN;
      }
  }
  
  static int iwl_mvm_tcool_get_max_state(struct thermal_cooling_device* cdev, unsigned long* state) {
      *state = ARRAY_SIZE(iwl_mvm_cdev_budgets) - 1;
  
      return 0;
  }
  
  static int iwl_mvm_tcool_get_cur_state(struct thermal_cooling_device* cdev, unsigned long* state) {
      struct iwl_mvm* mvm = (struct iwl_mvm*)(cdev->devdata);
  
      *state = mvm->cooling_dev.cur_state;
  
      return 0;
  }
  
  static int iwl_mvm_tcool_set_cur_state(struct thermal_cooling_device* cdev,
                                         unsigned long new_state) {
      struct iwl_mvm* mvm = (struct iwl_mvm*)(cdev->devdata);
      int ret;
  
      mutex_lock(&mvm->mutex);
  
      if (!iwl_mvm_firmware_running(mvm) || mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR) {
          ret = -EIO;
          goto unlock;
      }
  
      if (new_state >= ARRAY_SIZE(iwl_mvm_cdev_budgets)) {
          ret = -EINVAL;
          goto unlock;
      }
  
      ret = iwl_mvm_ctdp_command(mvm, CTDP_CMD_OPERATION_START, new_state);
  
  unlock:
      mutex_unlock(&mvm->mutex);
      return ret;
  }
  
  static const struct thermal_cooling_device_ops tcooling_ops = {
      .get_max_state = iwl_mvm_tcool_get_max_state,
      .get_cur_state = iwl_mvm_tcool_get_cur_state,
      .set_cur_state = iwl_mvm_tcool_set_cur_state,
  };
  
  static void iwl_mvm_cooling_device_register(struct iwl_mvm* mvm) {
      char name[] = "iwlwifi";
  
      if (!iwl_mvm_is_ctdp_supported(mvm)) { return; }
  
      BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH);
  
      mvm->cooling_dev.cdev = thermal_cooling_device_register(name, mvm, &tcooling_ops);
  
      if (IS_ERR(mvm->cooling_dev.cdev)) {
          IWL_DEBUG_TEMP(mvm, "Failed to register to cooling device (err = %ld)\n",
                         PTR_ERR(mvm->cooling_dev.cdev));
          mvm->cooling_dev.cdev = NULL;
          return;
      }
  }
  
  static void iwl_mvm_thermal_zone_unregister(struct iwl_mvm* mvm) {
      if (!iwl_mvm_is_tt_in_fw(mvm) || !mvm->tz_device.tzone) { return; }
  
      IWL_DEBUG_TEMP(mvm, "Thermal zone device unregister\n");
      if (mvm->tz_device.tzone) {
          thermal_zone_device_unregister(mvm->tz_device.tzone);
          mvm->tz_device.tzone = NULL;
      }
  }
  
  static void iwl_mvm_cooling_device_unregister(struct iwl_mvm* mvm) {
      if (!iwl_mvm_is_ctdp_supported(mvm) || !mvm->cooling_dev.cdev) { return; }
  
      IWL_DEBUG_TEMP(mvm, "Cooling device unregister\n");
      if (mvm->cooling_dev.cdev) {
          thermal_cooling_device_unregister(mvm->cooling_dev.cdev);
          mvm->cooling_dev.cdev = NULL;
      }
  }
  #endif  /* CONFIG_THERMAL */
  #endif  // NEEDS_PORTING
  
  void iwl_mvm_thermal_initialize(struct iwl_mvm* mvm, uint32_t min_backoff) {
  #if 0  // NEEDS_PORTING
      struct iwl_mvm_tt_mgmt* tt = &mvm->thermal_throttle;
  
      IWL_DEBUG_TEMP(mvm, "Initialize Thermal Throttling\n");
  
      if (mvm->cfg->thermal_params) {
          tt->params = *mvm->cfg->thermal_params;
      } else {
          tt->params = iwl_mvm_default_tt_params;
      }
  
      tt->throttle = false;
      tt->dynamic_smps = false;
      tt->min_backoff = min_backoff;
      INIT_DELAYED_WORK(&tt->ct_kill_exit, check_exit_ctkill);
  
  #ifdef CONFIG_THERMAL
      iwl_mvm_cooling_device_register(mvm);
      iwl_mvm_thermal_zone_register(mvm);
  #endif
      mvm->init_status |= IWL_MVM_INIT_STATUS_THERMAL_INIT_COMPLETE;
  #endif  // NEEDS_PORTING
  }
  
  void iwl_mvm_thermal_exit(struct iwl_mvm* mvm) {
    if (!(mvm->init_status & IWL_MVM_INIT_STATUS_THERMAL_INIT_COMPLETE)) {
      return;
    }
  
  #if 0   // NEEDS_PORTING
      cancel_delayed_work_sync(&mvm->thermal_throttle.ct_kill_exit);
      IWL_DEBUG_TEMP(mvm, "Exit Thermal Throttling\n");
  #endif  // NEEDS_PORTING
  
  #ifdef CONFIG_THERMAL
    iwl_mvm_cooling_device_unregister(mvm);
    iwl_mvm_thermal_zone_unregister(mvm);
  #endif
    mvm->init_status &= ~IWL_MVM_INIT_STATUS_THERMAL_INIT_COMPLETE;
  }
  