1 /******************************************************************************
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
8 * Copyright(c) 2013 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
10 * Copyright(c) 2015 - 2016 Intel Deutschland GmbH
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
26 * The full GNU General Public License is included in this distribution
27 * in the file called COPYING.
29 * Contact Information:
30 * Intel Linux Wireless <linuxwifi@intel.com>
31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
36 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
37 * Copyright(c) 2015 - 2016 Intel Deutschland GmbH
38 * All rights reserved.
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
44 * * Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * * Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in
48 * the documentation and/or other materials provided with the
50 * * Neither the name Intel Corporation nor the names of its
51 * contributors may be used to endorse or promote products derived
52 * from this software without specific prior written permission.
54 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
55 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
56 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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58 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
59 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
60 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
66 *****************************************************************************/
68 #include <linux/sort.h>
72 #define IWL_MVM_TEMP_NOTIF_WAIT_TIMEOUT HZ
74 static void iwl_mvm_enter_ctkill(struct iwl_mvm *mvm)
76 struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle;
77 u32 duration = tt->params.ct_kill_duration;
79 if (test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status))
82 IWL_ERR(mvm, "Enter CT Kill\n");
83 iwl_mvm_set_hw_ctkill_state(mvm, true);
85 if (!iwl_mvm_is_tt_in_fw(mvm)) {
87 tt->dynamic_smps = false;
90 /* Don't schedule an exit work if we're in test mode, since
91 * the temperature will not change unless we manually set it
92 * again (or disable testing).
94 if (!mvm->temperature_test)
95 schedule_delayed_work(&tt->ct_kill_exit,
96 round_jiffies_relative(duration * HZ));
99 static void iwl_mvm_exit_ctkill(struct iwl_mvm *mvm)
101 if (!test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status))
104 IWL_ERR(mvm, "Exit CT Kill\n");
105 iwl_mvm_set_hw_ctkill_state(mvm, false);
108 void iwl_mvm_tt_temp_changed(struct iwl_mvm *mvm, u32 temp)
110 /* ignore the notification if we are in test mode */
111 if (mvm->temperature_test)
114 if (mvm->temperature == temp)
117 mvm->temperature = temp;
118 iwl_mvm_tt_handler(mvm);
121 static int iwl_mvm_temp_notif_parse(struct iwl_mvm *mvm,
122 struct iwl_rx_packet *pkt)
124 struct iwl_dts_measurement_notif_v1 *notif_v1;
125 int len = iwl_rx_packet_payload_len(pkt);
128 /* we can use notif_v1 only, because v2 only adds an additional
129 * parameter, which is not used in this function.
131 if (WARN_ON_ONCE(len < sizeof(*notif_v1))) {
132 IWL_ERR(mvm, "Invalid DTS_MEASUREMENT_NOTIFICATION\n");
136 notif_v1 = (void *)pkt->data;
138 temp = le32_to_cpu(notif_v1->temp);
140 /* shouldn't be negative, but since it's s32, make sure it isn't */
141 if (WARN_ON_ONCE(temp < 0))
144 IWL_DEBUG_TEMP(mvm, "DTS_MEASUREMENT_NOTIFICATION - %d\n", temp);
149 static bool iwl_mvm_temp_notif_wait(struct iwl_notif_wait_data *notif_wait,
150 struct iwl_rx_packet *pkt, void *data)
152 struct iwl_mvm *mvm =
153 container_of(notif_wait, struct iwl_mvm, notif_wait);
157 ret = iwl_mvm_temp_notif_parse(mvm, pkt);
166 void iwl_mvm_temp_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
168 struct iwl_rx_packet *pkt = rxb_addr(rxb);
169 struct iwl_dts_measurement_notif_v2 *notif_v2;
170 int len = iwl_rx_packet_payload_len(pkt);
174 /* the notification is handled synchronously in ctkill, so skip here */
175 if (test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status))
178 temp = iwl_mvm_temp_notif_parse(mvm, pkt);
180 if (!iwl_mvm_is_tt_in_fw(mvm)) {
182 iwl_mvm_tt_temp_changed(mvm, temp);
186 if (WARN_ON_ONCE(len < sizeof(*notif_v2))) {
187 IWL_ERR(mvm, "Invalid DTS_MEASUREMENT_NOTIFICATION\n");
191 notif_v2 = (void *)pkt->data;
192 ths_crossed = le32_to_cpu(notif_v2->threshold_idx);
194 /* 0xFF in ths_crossed means the notification is not related
195 * to a trip, so we can ignore it here.
197 if (ths_crossed == 0xFF)
200 IWL_DEBUG_TEMP(mvm, "Temp = %d Threshold crossed = %d\n",
203 #ifdef CONFIG_THERMAL
204 if (WARN_ON(ths_crossed >= IWL_MAX_DTS_TRIPS))
207 if (mvm->tz_device.tzone) {
208 struct iwl_mvm_thermal_device *tz_dev = &mvm->tz_device;
210 thermal_notify_framework(tz_dev->tzone,
211 tz_dev->fw_trips_index[ths_crossed]);
213 #endif /* CONFIG_THERMAL */
216 void iwl_mvm_ct_kill_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
218 struct iwl_rx_packet *pkt = rxb_addr(rxb);
219 struct ct_kill_notif *notif;
220 int len = iwl_rx_packet_payload_len(pkt);
222 if (WARN_ON_ONCE(len != sizeof(*notif))) {
223 IWL_ERR(mvm, "Invalid CT_KILL_NOTIFICATION\n");
227 notif = (struct ct_kill_notif *)pkt->data;
228 IWL_DEBUG_TEMP(mvm, "CT Kill notification temperature = %d\n",
231 iwl_mvm_enter_ctkill(mvm);
234 static int iwl_mvm_get_temp_cmd(struct iwl_mvm *mvm)
236 struct iwl_dts_measurement_cmd cmd = {
237 .flags = cpu_to_le32(DTS_TRIGGER_CMD_FLAGS_TEMP),
239 struct iwl_ext_dts_measurement_cmd extcmd = {
240 .control_mode = cpu_to_le32(DTS_AUTOMATIC),
244 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_WIDE_CMD_HDR))
245 cmdid = iwl_cmd_id(CMD_DTS_MEASUREMENT_TRIGGER_WIDE,
248 cmdid = CMD_DTS_MEASUREMENT_TRIGGER;
250 if (!fw_has_capa(&mvm->fw->ucode_capa,
251 IWL_UCODE_TLV_CAPA_EXTENDED_DTS_MEASURE))
252 return iwl_mvm_send_cmd_pdu(mvm, cmdid, 0, sizeof(cmd), &cmd);
254 return iwl_mvm_send_cmd_pdu(mvm, cmdid, 0, sizeof(extcmd), &extcmd);
257 int iwl_mvm_get_temp(struct iwl_mvm *mvm, s32 *temp)
259 struct iwl_notification_wait wait_temp_notif;
260 static u16 temp_notif[] = { WIDE_ID(PHY_OPS_GROUP,
261 DTS_MEASUREMENT_NOTIF_WIDE) };
264 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_WIDE_CMD_HDR))
265 temp_notif[0] = DTS_MEASUREMENT_NOTIFICATION;
267 lockdep_assert_held(&mvm->mutex);
269 iwl_init_notification_wait(&mvm->notif_wait, &wait_temp_notif,
270 temp_notif, ARRAY_SIZE(temp_notif),
271 iwl_mvm_temp_notif_wait, temp);
273 ret = iwl_mvm_get_temp_cmd(mvm);
275 IWL_ERR(mvm, "Failed to get the temperature (err=%d)\n", ret);
276 iwl_remove_notification(&mvm->notif_wait, &wait_temp_notif);
280 ret = iwl_wait_notification(&mvm->notif_wait, &wait_temp_notif,
281 IWL_MVM_TEMP_NOTIF_WAIT_TIMEOUT);
283 IWL_ERR(mvm, "Getting the temperature timed out\n");
288 static void check_exit_ctkill(struct work_struct *work)
290 struct iwl_mvm_tt_mgmt *tt;
296 tt = container_of(work, struct iwl_mvm_tt_mgmt, ct_kill_exit.work);
297 mvm = container_of(tt, struct iwl_mvm, thermal_throttle);
299 if (iwl_mvm_is_tt_in_fw(mvm)) {
300 iwl_mvm_exit_ctkill(mvm);
305 duration = tt->params.ct_kill_duration;
307 mutex_lock(&mvm->mutex);
309 if (__iwl_mvm_mac_start(mvm))
312 /* make sure the device is available for direct read/writes */
313 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_CHECK_CTKILL)) {
314 __iwl_mvm_mac_stop(mvm);
318 ret = iwl_mvm_get_temp(mvm, &temp);
320 iwl_mvm_unref(mvm, IWL_MVM_REF_CHECK_CTKILL);
322 __iwl_mvm_mac_stop(mvm);
327 IWL_DEBUG_TEMP(mvm, "NIC temperature: %d\n", temp);
329 if (temp <= tt->params.ct_kill_exit) {
330 mutex_unlock(&mvm->mutex);
331 iwl_mvm_exit_ctkill(mvm);
336 mutex_unlock(&mvm->mutex);
337 schedule_delayed_work(&mvm->thermal_throttle.ct_kill_exit,
338 round_jiffies(duration * HZ));
341 static void iwl_mvm_tt_smps_iterator(void *_data, u8 *mac,
342 struct ieee80211_vif *vif)
344 struct iwl_mvm *mvm = _data;
345 enum ieee80211_smps_mode smps_mode;
347 lockdep_assert_held(&mvm->mutex);
349 if (mvm->thermal_throttle.dynamic_smps)
350 smps_mode = IEEE80211_SMPS_DYNAMIC;
352 smps_mode = IEEE80211_SMPS_AUTOMATIC;
354 if (vif->type != NL80211_IFTYPE_STATION)
357 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, smps_mode);
360 static void iwl_mvm_tt_tx_protection(struct iwl_mvm *mvm, bool enable)
362 struct iwl_mvm_sta *mvmsta;
365 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
366 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, i);
370 if (enable == mvmsta->tt_tx_protection)
372 err = iwl_mvm_tx_protection(mvm, mvmsta, enable);
374 IWL_ERR(mvm, "Failed to %s Tx protection\n",
375 enable ? "enable" : "disable");
377 IWL_DEBUG_TEMP(mvm, "%s Tx protection\n",
378 enable ? "Enable" : "Disable");
379 mvmsta->tt_tx_protection = enable;
384 void iwl_mvm_tt_tx_backoff(struct iwl_mvm *mvm, u32 backoff)
386 struct iwl_host_cmd cmd = {
387 .id = REPLY_THERMAL_MNG_BACKOFF,
388 .len = { sizeof(u32), },
389 .data = { &backoff, },
392 backoff = max(backoff, mvm->thermal_throttle.min_backoff);
394 if (iwl_mvm_send_cmd(mvm, &cmd) == 0) {
395 IWL_DEBUG_TEMP(mvm, "Set Thermal Tx backoff to: %u\n",
397 mvm->thermal_throttle.tx_backoff = backoff;
399 IWL_ERR(mvm, "Failed to change Thermal Tx backoff\n");
403 void iwl_mvm_tt_handler(struct iwl_mvm *mvm)
405 struct iwl_tt_params *params = &mvm->thermal_throttle.params;
406 struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle;
407 s32 temperature = mvm->temperature;
408 bool throttle_enable = false;
412 IWL_DEBUG_TEMP(mvm, "NIC temperature: %d\n", mvm->temperature);
414 if (params->support_ct_kill && temperature >= params->ct_kill_entry) {
415 iwl_mvm_enter_ctkill(mvm);
419 if (params->support_ct_kill &&
420 temperature <= params->ct_kill_exit) {
421 iwl_mvm_exit_ctkill(mvm);
425 if (params->support_dynamic_smps) {
426 if (!tt->dynamic_smps &&
427 temperature >= params->dynamic_smps_entry) {
428 IWL_DEBUG_TEMP(mvm, "Enable dynamic SMPS\n");
429 tt->dynamic_smps = true;
430 ieee80211_iterate_active_interfaces_atomic(
431 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
432 iwl_mvm_tt_smps_iterator, mvm);
433 throttle_enable = true;
434 } else if (tt->dynamic_smps &&
435 temperature <= params->dynamic_smps_exit) {
436 IWL_DEBUG_TEMP(mvm, "Disable dynamic SMPS\n");
437 tt->dynamic_smps = false;
438 ieee80211_iterate_active_interfaces_atomic(
439 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
440 iwl_mvm_tt_smps_iterator, mvm);
444 if (params->support_tx_protection) {
445 if (temperature >= params->tx_protection_entry) {
446 iwl_mvm_tt_tx_protection(mvm, true);
447 throttle_enable = true;
448 } else if (temperature <= params->tx_protection_exit) {
449 iwl_mvm_tt_tx_protection(mvm, false);
453 if (params->support_tx_backoff) {
454 tx_backoff = tt->min_backoff;
455 for (i = 0; i < TT_TX_BACKOFF_SIZE; i++) {
456 if (temperature < params->tx_backoff[i].temperature)
458 tx_backoff = max(tt->min_backoff,
459 params->tx_backoff[i].backoff);
461 if (tx_backoff != tt->min_backoff)
462 throttle_enable = true;
463 if (tt->tx_backoff != tx_backoff)
464 iwl_mvm_tt_tx_backoff(mvm, tx_backoff);
467 if (!tt->throttle && throttle_enable) {
469 "Due to high temperature thermal throttling initiated\n");
471 } else if (tt->throttle && !tt->dynamic_smps &&
472 tt->tx_backoff == tt->min_backoff &&
473 temperature <= params->tx_protection_exit) {
475 "Temperature is back to normal thermal throttling stopped\n");
476 tt->throttle = false;
480 static const struct iwl_tt_params iwl_mvm_default_tt_params = {
481 .ct_kill_entry = 118,
483 .ct_kill_duration = 5,
484 .dynamic_smps_entry = 114,
485 .dynamic_smps_exit = 110,
486 .tx_protection_entry = 114,
487 .tx_protection_exit = 108,
489 {.temperature = 112, .backoff = 200},
490 {.temperature = 113, .backoff = 600},
491 {.temperature = 114, .backoff = 1200},
492 {.temperature = 115, .backoff = 2000},
493 {.temperature = 116, .backoff = 4000},
494 {.temperature = 117, .backoff = 10000},
496 .support_ct_kill = true,
497 .support_dynamic_smps = true,
498 .support_tx_protection = true,
499 .support_tx_backoff = true,
502 /* budget in mWatt */
503 static const u32 iwl_mvm_cdev_budgets[] = {
504 2000, /* cooling state 0 */
505 1800, /* cooling state 1 */
506 1600, /* cooling state 2 */
507 1400, /* cooling state 3 */
508 1200, /* cooling state 4 */
509 1000, /* cooling state 5 */
510 900, /* cooling state 6 */
511 800, /* cooling state 7 */
512 700, /* cooling state 8 */
513 650, /* cooling state 9 */
514 600, /* cooling state 10 */
515 550, /* cooling state 11 */
516 500, /* cooling state 12 */
517 450, /* cooling state 13 */
518 400, /* cooling state 14 */
519 350, /* cooling state 15 */
520 300, /* cooling state 16 */
521 250, /* cooling state 17 */
522 200, /* cooling state 18 */
523 150, /* cooling state 19 */
526 int iwl_mvm_ctdp_command(struct iwl_mvm *mvm, u32 op, u32 state)
528 struct iwl_mvm_ctdp_cmd cmd = {
529 .operation = cpu_to_le32(op),
530 .budget = cpu_to_le32(iwl_mvm_cdev_budgets[state]),
536 lockdep_assert_held(&mvm->mutex);
538 ret = iwl_mvm_send_cmd_pdu_status(mvm, WIDE_ID(PHY_OPS_GROUP,
540 sizeof(cmd), &cmd, &status);
543 IWL_ERR(mvm, "cTDP command failed (err=%d)\n", ret);
548 case CTDP_CMD_OPERATION_START:
549 #ifdef CONFIG_THERMAL
550 mvm->cooling_dev.cur_state = state;
551 #endif /* CONFIG_THERMAL */
553 case CTDP_CMD_OPERATION_REPORT:
554 IWL_DEBUG_TEMP(mvm, "cTDP avg energy in mWatt = %d\n", status);
555 /* when the function is called with CTDP_CMD_OPERATION_REPORT
556 * option the function should return the average budget value
557 * that is received from the FW.
558 * The budget can't be less or equal to 0, so it's possible
559 * to distinguish between error values and budgets.
562 case CTDP_CMD_OPERATION_STOP:
563 IWL_DEBUG_TEMP(mvm, "cTDP stopped successfully\n");
570 #ifdef CONFIG_THERMAL
571 static int compare_temps(const void *a, const void *b)
573 return ((s16)le16_to_cpu(*(__le16 *)a) -
574 (s16)le16_to_cpu(*(__le16 *)b));
577 int iwl_mvm_send_temp_report_ths_cmd(struct iwl_mvm *mvm)
579 struct temp_report_ths_cmd cmd = {0};
580 int ret, i, j, idx = 0;
582 lockdep_assert_held(&mvm->mutex);
584 if (!mvm->tz_device.tzone)
587 /* The driver holds array of temperature trips that are unsorted
588 * and uncompressed, the FW should get it compressed and sorted
591 /* compress temp_trips to cmd array, remove uninitialized values*/
592 for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) {
593 if (mvm->tz_device.temp_trips[i] != S16_MIN) {
594 cmd.thresholds[idx++] =
595 cpu_to_le16(mvm->tz_device.temp_trips[i]);
598 cmd.num_temps = cpu_to_le32(idx);
604 sort(cmd.thresholds, idx, sizeof(s16), compare_temps, NULL);
606 /* we should save the indexes of trips because we sort
607 * and compress the orginal array
609 for (i = 0; i < idx; i++) {
610 for (j = 0; j < IWL_MAX_DTS_TRIPS; j++) {
611 if (le16_to_cpu(cmd.thresholds[i]) ==
612 mvm->tz_device.temp_trips[j])
613 mvm->tz_device.fw_trips_index[i] = j;
618 ret = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(PHY_OPS_GROUP,
619 TEMP_REPORTING_THRESHOLDS_CMD),
620 0, sizeof(cmd), &cmd);
622 IWL_ERR(mvm, "TEMP_REPORT_THS_CMD command failed (err=%d)\n",
628 static int iwl_mvm_tzone_get_temp(struct thermal_zone_device *device,
631 struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata;
635 mutex_lock(&mvm->mutex);
637 if (!mvm->ucode_loaded || !(mvm->cur_ucode == IWL_UCODE_REGULAR)) {
642 ret = iwl_mvm_get_temp(mvm, &temp);
646 *temperature = temp * 1000;
649 mutex_unlock(&mvm->mutex);
653 static int iwl_mvm_tzone_get_trip_temp(struct thermal_zone_device *device,
656 struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata;
658 if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS)
661 *temp = mvm->tz_device.temp_trips[trip] * 1000;
666 static int iwl_mvm_tzone_get_trip_type(struct thermal_zone_device *device,
667 int trip, enum thermal_trip_type *type)
669 if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS)
672 *type = THERMAL_TRIP_PASSIVE;
677 static int iwl_mvm_tzone_set_trip_temp(struct thermal_zone_device *device,
680 struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata;
681 struct iwl_mvm_thermal_device *tzone;
685 mutex_lock(&mvm->mutex);
687 if (!mvm->ucode_loaded || !(mvm->cur_ucode == IWL_UCODE_REGULAR)) {
692 if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS) {
697 if ((temp / 1000) > S16_MAX) {
702 temperature = (s16)(temp / 1000);
703 tzone = &mvm->tz_device;
711 if (tzone->temp_trips[trip] == temperature) {
716 /* already existing temperature */
717 for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) {
718 if (tzone->temp_trips[i] == temperature) {
724 tzone->temp_trips[trip] = temperature;
726 ret = iwl_mvm_send_temp_report_ths_cmd(mvm);
728 mutex_unlock(&mvm->mutex);
732 static struct thermal_zone_device_ops tzone_ops = {
733 .get_temp = iwl_mvm_tzone_get_temp,
734 .get_trip_temp = iwl_mvm_tzone_get_trip_temp,
735 .get_trip_type = iwl_mvm_tzone_get_trip_type,
736 .set_trip_temp = iwl_mvm_tzone_set_trip_temp,
739 /* make all trips writable */
740 #define IWL_WRITABLE_TRIPS_MSK (BIT(IWL_MAX_DTS_TRIPS) - 1)
742 static void iwl_mvm_thermal_zone_register(struct iwl_mvm *mvm)
745 char name[] = "iwlwifi";
747 if (!iwl_mvm_is_tt_in_fw(mvm)) {
748 mvm->tz_device.tzone = NULL;
753 BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH);
755 mvm->tz_device.tzone = thermal_zone_device_register(name,
757 IWL_WRITABLE_TRIPS_MSK,
760 if (IS_ERR(mvm->tz_device.tzone)) {
762 "Failed to register to thermal zone (err = %ld)\n",
763 PTR_ERR(mvm->tz_device.tzone));
764 mvm->tz_device.tzone = NULL;
768 /* 0 is a valid temperature,
769 * so initialize the array with S16_MIN which invalid temperature
771 for (i = 0 ; i < IWL_MAX_DTS_TRIPS; i++)
772 mvm->tz_device.temp_trips[i] = S16_MIN;
775 static int iwl_mvm_tcool_get_max_state(struct thermal_cooling_device *cdev,
776 unsigned long *state)
778 *state = ARRAY_SIZE(iwl_mvm_cdev_budgets) - 1;
783 static int iwl_mvm_tcool_get_cur_state(struct thermal_cooling_device *cdev,
784 unsigned long *state)
786 struct iwl_mvm *mvm = (struct iwl_mvm *)(cdev->devdata);
788 *state = mvm->cooling_dev.cur_state;
793 static int iwl_mvm_tcool_set_cur_state(struct thermal_cooling_device *cdev,
794 unsigned long new_state)
796 struct iwl_mvm *mvm = (struct iwl_mvm *)(cdev->devdata);
799 if (!mvm->ucode_loaded || !(mvm->cur_ucode == IWL_UCODE_REGULAR))
802 mutex_lock(&mvm->mutex);
804 if (new_state >= ARRAY_SIZE(iwl_mvm_cdev_budgets)) {
809 ret = iwl_mvm_ctdp_command(mvm, CTDP_CMD_OPERATION_START,
813 mutex_unlock(&mvm->mutex);
817 static struct thermal_cooling_device_ops tcooling_ops = {
818 .get_max_state = iwl_mvm_tcool_get_max_state,
819 .get_cur_state = iwl_mvm_tcool_get_cur_state,
820 .set_cur_state = iwl_mvm_tcool_set_cur_state,
823 static void iwl_mvm_cooling_device_register(struct iwl_mvm *mvm)
825 char name[] = "iwlwifi";
827 if (!iwl_mvm_is_ctdp_supported(mvm))
830 BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH);
832 mvm->cooling_dev.cdev =
833 thermal_cooling_device_register(name,
837 if (IS_ERR(mvm->cooling_dev.cdev)) {
839 "Failed to register to cooling device (err = %ld)\n",
840 PTR_ERR(mvm->cooling_dev.cdev));
841 mvm->cooling_dev.cdev = NULL;
846 static void iwl_mvm_thermal_zone_unregister(struct iwl_mvm *mvm)
848 if (!iwl_mvm_is_tt_in_fw(mvm) || !mvm->tz_device.tzone)
851 IWL_DEBUG_TEMP(mvm, "Thermal zone device unregister\n");
852 thermal_zone_device_unregister(mvm->tz_device.tzone);
853 mvm->tz_device.tzone = NULL;
856 static void iwl_mvm_cooling_device_unregister(struct iwl_mvm *mvm)
858 if (!iwl_mvm_is_ctdp_supported(mvm) || !mvm->cooling_dev.cdev)
861 IWL_DEBUG_TEMP(mvm, "Cooling device unregister\n");
862 thermal_cooling_device_unregister(mvm->cooling_dev.cdev);
863 mvm->cooling_dev.cdev = NULL;
865 #endif /* CONFIG_THERMAL */
867 void iwl_mvm_thermal_initialize(struct iwl_mvm *mvm, u32 min_backoff)
869 struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle;
871 IWL_DEBUG_TEMP(mvm, "Initialize Thermal Throttling\n");
873 if (mvm->cfg->thermal_params)
874 tt->params = *mvm->cfg->thermal_params;
876 tt->params = iwl_mvm_default_tt_params;
878 tt->throttle = false;
879 tt->dynamic_smps = false;
880 tt->min_backoff = min_backoff;
881 INIT_DELAYED_WORK(&tt->ct_kill_exit, check_exit_ctkill);
883 #ifdef CONFIG_THERMAL
884 iwl_mvm_cooling_device_register(mvm);
885 iwl_mvm_thermal_zone_register(mvm);
889 void iwl_mvm_thermal_exit(struct iwl_mvm *mvm)
891 cancel_delayed_work_sync(&mvm->thermal_throttle.ct_kill_exit);
892 IWL_DEBUG_TEMP(mvm, "Exit Thermal Throttling\n");
894 #ifdef CONFIG_THERMAL
895 iwl_mvm_cooling_device_unregister(mvm);
896 iwl_mvm_thermal_zone_unregister(mvm);