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path: root/drivers/net/wireless/iwlwifi/iwl-power.c
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Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-power.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-power.c526
1 files changed, 526 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-power.c b/drivers/net/wireless/iwlwifi/iwl-power.c
index f2ea3f05f6e..00937b3ee8e 100644
--- a/drivers/net/wireless/iwlwifi/iwl-power.c
+++ b/drivers/net/wireless/iwlwifi/iwl-power.c
@@ -36,6 +36,7 @@
#include "iwl-eeprom.h"
#include "iwl-dev.h"
#include "iwl-core.h"
+#include "iwl-io.h"
#include "iwl-commands.h"
#include "iwl-debug.h"
#include "iwl-power.h"
@@ -97,6 +98,45 @@ static const struct iwl_power_vec_entry range_2[IWL_POWER_NUM] = {
{{SLP, SLP_TOUT(25), SLP_TOUT(25), SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
};
+/* default Thermal Throttling transaction table
+ * Current state | Throttling Down | Throttling Up
+ *=============================================================================
+ * Condition Nxt State Condition Nxt State Condition Nxt State
+ *-----------------------------------------------------------------------------
+ * IWL_TI_0 T >= 115 CT_KILL 115>T>=105 TI_1 N/A N/A
+ * IWL_TI_1 T >= 115 CT_KILL 115>T>=110 TI_2 T<=95 TI_0
+ * IWL_TI_2 T >= 115 CT_KILL T<=100 TI_1
+ * IWL_CT_KILL N/A N/A N/A N/A T<=95 TI_0
+ *=============================================================================
+ */
+static const struct iwl_tt_trans tt_range_0[IWL_TI_STATE_MAX - 1] = {
+ {IWL_TI_0, IWL_ABSOLUTE_ZERO, 104},
+ {IWL_TI_1, 105, CT_KILL_THRESHOLD},
+ {IWL_TI_CT_KILL, CT_KILL_THRESHOLD + 1, IWL_ABSOLUTE_MAX}
+};
+static const struct iwl_tt_trans tt_range_1[IWL_TI_STATE_MAX - 1] = {
+ {IWL_TI_0, IWL_ABSOLUTE_ZERO, 95},
+ {IWL_TI_2, 110, CT_KILL_THRESHOLD},
+ {IWL_TI_CT_KILL, CT_KILL_THRESHOLD + 1, IWL_ABSOLUTE_MAX}
+};
+static const struct iwl_tt_trans tt_range_2[IWL_TI_STATE_MAX - 1] = {
+ {IWL_TI_1, IWL_ABSOLUTE_ZERO, 100},
+ {IWL_TI_CT_KILL, CT_KILL_THRESHOLD + 1, IWL_ABSOLUTE_MAX},
+ {IWL_TI_CT_KILL, CT_KILL_THRESHOLD + 1, IWL_ABSOLUTE_MAX}
+};
+static const struct iwl_tt_trans tt_range_3[IWL_TI_STATE_MAX - 1] = {
+ {IWL_TI_0, IWL_ABSOLUTE_ZERO, CT_KILL_EXIT_THRESHOLD},
+ {IWL_TI_CT_KILL, CT_KILL_EXIT_THRESHOLD + 1, IWL_ABSOLUTE_MAX},
+ {IWL_TI_CT_KILL, CT_KILL_EXIT_THRESHOLD + 1, IWL_ABSOLUTE_MAX}
+};
+
+/* Advance Thermal Throttling default restriction table */
+static const struct iwl_tt_restriction restriction_range[IWL_TI_STATE_MAX] = {
+ {IWL_TX_MULTI, true, IWL_RX_MULTI},
+ {IWL_TX_SINGLE, true, IWL_RX_MULTI},
+ {IWL_TX_SINGLE, false, IWL_RX_SINGLE},
+ {IWL_TX_NONE, false, IWL_RX_NONE}
+};
/* set card power command */
static int iwl_set_power(struct iwl_priv *priv, void *cmd)
@@ -211,6 +251,7 @@ int iwl_power_update_mode(struct iwl_priv *priv, bool force)
{
struct iwl_power_mgr *setting = &(priv->power_data);
int ret = 0;
+ struct iwl_tt_mgmt *tt = &priv->power_data.tt;
u16 uninitialized_var(final_mode);
bool update_chains;
@@ -223,6 +264,10 @@ int iwl_power_update_mode(struct iwl_priv *priv, bool force)
if (setting->power_disabled)
final_mode = IWL_POWER_MODE_CAM;
+ if (tt->state >= IWL_TI_1) {
+ /* TT power setting overwrite user & system power setting */
+ final_mode = tt->tt_power_mode;
+ }
if (iwl_is_ready_rf(priv) &&
((setting->power_mode != final_mode) || force)) {
struct iwl_powertable_cmd cmd;
@@ -267,6 +312,487 @@ int iwl_power_set_user_mode(struct iwl_priv *priv, u16 mode)
}
EXPORT_SYMBOL(iwl_power_set_user_mode);
+bool iwl_ht_enabled(struct iwl_priv *priv)
+{
+ struct iwl_tt_mgmt *tt = &priv->power_data.tt;
+ struct iwl_tt_restriction *restriction;
+
+ if (!priv->power_data.adv_tt)
+ return true;
+ restriction = tt->restriction + tt->state;
+ return restriction->is_ht;
+}
+EXPORT_SYMBOL(iwl_ht_enabled);
+
+u8 iwl_tx_ant_restriction(struct iwl_priv *priv)
+{
+ struct iwl_tt_mgmt *tt = &priv->power_data.tt;
+ struct iwl_tt_restriction *restriction;
+
+ if (!priv->power_data.adv_tt)
+ return IWL_TX_MULTI;
+ restriction = tt->restriction + tt->state;
+ return restriction->tx_stream;
+}
+EXPORT_SYMBOL(iwl_tx_ant_restriction);
+
+u8 iwl_rx_ant_restriction(struct iwl_priv *priv)
+{
+ struct iwl_tt_mgmt *tt = &priv->power_data.tt;
+ struct iwl_tt_restriction *restriction;
+
+ if (!priv->power_data.adv_tt)
+ return IWL_RX_MULTI;
+ restriction = tt->restriction + tt->state;
+ return restriction->rx_stream;
+}
+EXPORT_SYMBOL(iwl_rx_ant_restriction);
+
+#define CT_KILL_EXIT_DURATION (5) /* 5 seconds duration */
+
+/*
+ * toggle the bit to wake up uCode and check the temperature
+ * if the temperature is below CT, uCode will stay awake and send card
+ * state notification with CT_KILL bit clear to inform Thermal Throttling
+ * Management to change state. Otherwise, uCode will go back to sleep
+ * without doing anything, driver should continue the 5 seconds timer
+ * to wake up uCode for temperature check until temperature drop below CT
+ */
+static void iwl_tt_check_exit_ct_kill(unsigned long data)
+{
+ struct iwl_priv *priv = (struct iwl_priv *)data;
+ struct iwl_tt_mgmt *tt = &priv->power_data.tt;
+ unsigned long flags;
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return;
+
+ if (tt->state == IWL_TI_CT_KILL) {
+ if (priv->power_data.ct_kill_toggle) {
+ iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
+ CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
+ priv->power_data.ct_kill_toggle = false;
+ } else {
+ iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
+ CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
+ priv->power_data.ct_kill_toggle = true;
+ }
+ iwl_read32(priv, CSR_UCODE_DRV_GP1);
+ spin_lock_irqsave(&priv->reg_lock, flags);
+ if (!iwl_grab_nic_access(priv))
+ iwl_release_nic_access(priv);
+ spin_unlock_irqrestore(&priv->reg_lock, flags);
+
+ /* Reschedule the ct_kill timer to occur in
+ * CT_KILL_EXIT_DURATION seconds to ensure we get a
+ * thermal update */
+ mod_timer(&priv->power_data.ct_kill_exit_tm, jiffies +
+ CT_KILL_EXIT_DURATION * HZ);
+ }
+}
+
+static void iwl_perform_ct_kill_task(struct iwl_priv *priv,
+ bool stop)
+{
+ if (stop) {
+ IWL_DEBUG_POWER(priv, "Stop all queues\n");
+ if (priv->mac80211_registered)
+ ieee80211_stop_queues(priv->hw);
+ IWL_DEBUG_POWER(priv,
+ "Schedule 5 seconds CT_KILL Timer\n");
+ mod_timer(&priv->power_data.ct_kill_exit_tm, jiffies +
+ CT_KILL_EXIT_DURATION * HZ);
+ } else {
+ IWL_DEBUG_POWER(priv, "Wake all queues\n");
+ if (priv->mac80211_registered)
+ ieee80211_wake_queues(priv->hw);
+ }
+}
+
+#define IWL_MINIMAL_POWER_THRESHOLD (CT_KILL_THRESHOLD_LEGACY)
+#define IWL_REDUCED_PERFORMANCE_THRESHOLD_2 (100)
+#define IWL_REDUCED_PERFORMANCE_THRESHOLD_1 (90)
+
+/*
+ * Legacy thermal throttling
+ * 1) Avoid NIC destruction due to high temperatures
+ * Chip will identify dangerously high temperatures that can
+ * harm the device and will power down
+ * 2) Avoid the NIC power down due to high temperature
+ * Throttle early enough to lower the power consumption before
+ * drastic steps are needed
+ */
+static void iwl_legacy_tt_handler(struct iwl_priv *priv, s32 temp)
+{
+ struct iwl_tt_mgmt *tt = &priv->power_data.tt;
+ enum iwl_tt_state new_state;
+ struct iwl_power_mgr *setting = &priv->power_data;
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+ if ((tt->tt_previous_temp) &&
+ (temp > tt->tt_previous_temp) &&
+ ((temp - tt->tt_previous_temp) >
+ IWL_TT_INCREASE_MARGIN)) {
+ IWL_DEBUG_POWER(priv,
+ "Temperature increase %d degree Celsius\n",
+ (temp - tt->tt_previous_temp));
+ }
+#endif
+ /* in Celsius */
+ if (temp >= IWL_MINIMAL_POWER_THRESHOLD)
+ new_state = IWL_TI_CT_KILL;
+ else if (temp >= IWL_REDUCED_PERFORMANCE_THRESHOLD_2)
+ new_state = IWL_TI_2;
+ else if (temp >= IWL_REDUCED_PERFORMANCE_THRESHOLD_1)
+ new_state = IWL_TI_1;
+ else
+ new_state = IWL_TI_0;
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+ tt->tt_previous_temp = temp;
+#endif
+ if (tt->state != new_state) {
+ if (tt->state == IWL_TI_0) {
+ tt->sys_power_mode = setting->power_mode;
+ IWL_DEBUG_POWER(priv, "current power mode: %u\n",
+ setting->power_mode);
+ }
+ switch (new_state) {
+ case IWL_TI_0:
+ /* when system ready to go back to IWL_TI_0 state
+ * using system power mode instead of TT power mode
+ * revert back to the orginal power mode which was saved
+ * before enter Thermal Throttling state
+ * update priv->power_data.user_power_setting to the
+ * required power mode to make sure
+ * iwl_power_update_mode() will update power correctly.
+ */
+ priv->power_data.user_power_setting =
+ tt->sys_power_mode;
+ tt->tt_power_mode = tt->sys_power_mode;
+ break;
+ case IWL_TI_1:
+ tt->tt_power_mode = IWL_POWER_INDEX_3;
+ break;
+ case IWL_TI_2:
+ tt->tt_power_mode = IWL_POWER_INDEX_4;
+ break;
+ default:
+ tt->tt_power_mode = IWL_POWER_INDEX_5;
+ break;
+ }
+ if (iwl_power_update_mode(priv, true)) {
+ /* TT state not updated
+ * try again during next temperature read
+ */
+ IWL_ERR(priv, "Cannot update power mode, "
+ "TT state not updated\n");
+ } else {
+ if (new_state == IWL_TI_CT_KILL)
+ iwl_perform_ct_kill_task(priv, true);
+ else if (tt->state == IWL_TI_CT_KILL &&
+ new_state != IWL_TI_CT_KILL)
+ iwl_perform_ct_kill_task(priv, false);
+ tt->state = new_state;
+ IWL_DEBUG_POWER(priv, "Temperature state changed %u\n",
+ tt->state);
+ IWL_DEBUG_POWER(priv, "Power Index change to %u\n",
+ tt->tt_power_mode);
+ }
+ }
+}
+
+/*
+ * Advance thermal throttling
+ * 1) Avoid NIC destruction due to high temperatures
+ * Chip will identify dangerously high temperatures that can
+ * harm the device and will power down
+ * 2) Avoid the NIC power down due to high temperature
+ * Throttle early enough to lower the power consumption before
+ * drastic steps are needed
+ * Actions include relaxing the power down sleep thresholds and
+ * decreasing the number of TX streams
+ * 3) Avoid throughput performance impact as much as possible
+ *
+ *=============================================================================
+ * Condition Nxt State Condition Nxt State Condition Nxt State
+ *-----------------------------------------------------------------------------
+ * IWL_TI_0 T >= 115 CT_KILL 115>T>=105 TI_1 N/A N/A
+ * IWL_TI_1 T >= 115 CT_KILL 115>T>=110 TI_2 T<=95 TI_0
+ * IWL_TI_2 T >= 115 CT_KILL T<=100 TI_1
+ * IWL_CT_KILL N/A N/A N/A N/A T<=95 TI_0
+ *=============================================================================
+ */
+static void iwl_advance_tt_handler(struct iwl_priv *priv, s32 temp)
+{
+ struct iwl_tt_mgmt *tt = &priv->power_data.tt;
+ int i;
+ bool changed = false;
+ enum iwl_tt_state old_state;
+ struct iwl_tt_trans *transaction;
+
+ old_state = tt->state;
+ for (i = 0; i < IWL_TI_STATE_MAX - 1; i++) {
+ /* based on the current TT state,
+ * find the curresponding transaction table
+ * each table has (IWL_TI_STATE_MAX - 1) entries
+ * tt->transaction + ((old_state * (IWL_TI_STATE_MAX - 1))
+ * will advance to the correct table.
+ * then based on the current temperature
+ * find the next state need to transaction to
+ * go through all the possible (IWL_TI_STATE_MAX - 1) entries
+ * in the current table to see if transaction is needed
+ */
+ transaction = tt->transaction +
+ ((old_state * (IWL_TI_STATE_MAX - 1)) + i);
+ if (temp >= transaction->tt_low &&
+ temp <= transaction->tt_high) {
+#ifdef CONFIG_IWLWIFI_DEBUG
+ if ((tt->tt_previous_temp) &&
+ (temp > tt->tt_previous_temp) &&
+ ((temp - tt->tt_previous_temp) >
+ IWL_TT_INCREASE_MARGIN)) {
+ IWL_DEBUG_POWER(priv,
+ "Temperature increase %d "
+ "degree Celsius\n",
+ (temp - tt->tt_previous_temp));
+ }
+ tt->tt_previous_temp = temp;
+#endif
+ if (old_state !=
+ transaction->next_state) {
+ changed = true;
+ tt->state =
+ transaction->next_state;
+ }
+ break;
+ }
+ }
+ if (changed) {
+ struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
+ struct iwl_power_mgr *setting = &priv->power_data;
+
+ if (tt->state >= IWL_TI_1) {
+ /* if switching from IWL_TI_0 to other TT state
+ * save previous power setting in tt->sys_power_mode */
+ if (old_state == IWL_TI_0)
+ tt->sys_power_mode = setting->power_mode;
+ /* force PI = IWL_POWER_INDEX_5 in the case of TI > 0 */
+ tt->tt_power_mode = IWL_POWER_INDEX_5;
+ if (!iwl_ht_enabled(priv))
+ /* disable HT */
+ rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
+ RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
+ RXON_FLG_FAT_PROT_MSK |
+ RXON_FLG_HT_PROT_MSK);
+ else {
+ /* check HT capability and set
+ * according to the system HT capability
+ * in case get disabled before */
+ iwl_set_rxon_ht(priv, &priv->current_ht_config);
+ }
+
+ } else {
+ /* restore system power setting */
+ /* the previous power mode was saved in
+ * tt->sys_power_mode when system move into
+ * Thermal Throttling state
+ * set power_data.user_power_setting to the previous
+ * system power mode to make sure power will get
+ * updated correctly
+ */
+ priv->power_data.user_power_setting =
+ tt->sys_power_mode;
+ tt->tt_power_mode = tt->sys_power_mode;
+ /* check HT capability and set
+ * according to the system HT capability
+ * in case get disabled before */
+ iwl_set_rxon_ht(priv, &priv->current_ht_config);
+ }
+ if (iwl_power_update_mode(priv, true)) {
+ /* TT state not updated
+ * try again during next temperature read
+ */
+ IWL_ERR(priv, "Cannot update power mode, "
+ "TT state not updated\n");
+ tt->state = old_state;
+ } else {
+ IWL_DEBUG_POWER(priv,
+ "Thermal Throttling to new state: %u\n",
+ tt->state);
+ if (old_state != IWL_TI_CT_KILL &&
+ tt->state == IWL_TI_CT_KILL) {
+ IWL_DEBUG_POWER(priv, "Enter IWL_TI_CT_KILL\n");
+ iwl_perform_ct_kill_task(priv, true);
+
+ } else if (old_state == IWL_TI_CT_KILL &&
+ tt->state != IWL_TI_CT_KILL) {
+ IWL_DEBUG_POWER(priv, "Exit IWL_TI_CT_KILL\n");
+ iwl_perform_ct_kill_task(priv, false);
+ }
+ }
+ }
+}
+
+/* Card State Notification indicated reach critical temperature
+ * if PSP not enable, no Thermal Throttling function will be performed
+ * just set the GP1 bit to acknowledge the event
+ * otherwise, go into IWL_TI_CT_KILL state
+ * since Card State Notification will not provide any temperature reading
+ * for Legacy mode
+ * so just pass the CT_KILL temperature to iwl_legacy_tt_handler()
+ * for advance mode
+ * pass CT_KILL_THRESHOLD+1 to make sure move into IWL_TI_CT_KILL state
+ */
+void iwl_tt_enter_ct_kill(struct iwl_priv *priv)
+{
+ struct iwl_tt_mgmt *tt = &priv->power_data.tt;
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return;
+
+ if (tt->state != IWL_TI_CT_KILL) {
+ IWL_ERR(priv, "Device reached critical temperature "
+ "- ucode going to sleep!\n");
+ if (!priv->power_data.adv_tt)
+ iwl_legacy_tt_handler(priv,
+ IWL_MINIMAL_POWER_THRESHOLD);
+ else
+ iwl_advance_tt_handler(priv,
+ CT_KILL_THRESHOLD + 1);
+ }
+}
+EXPORT_SYMBOL(iwl_tt_enter_ct_kill);
+
+/* Card State Notification indicated out of critical temperature
+ * since Card State Notification will not provide any temperature reading
+ * so pass the IWL_REDUCED_PERFORMANCE_THRESHOLD_2 temperature
+ * to iwl_legacy_tt_handler() to get out of IWL_CT_KILL state
+ */
+void iwl_tt_exit_ct_kill(struct iwl_priv *priv)
+{
+ struct iwl_tt_mgmt *tt = &priv->power_data.tt;
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return;
+
+ /* stop ct_kill_exit_tm timer */
+ del_timer_sync(&priv->power_data.ct_kill_exit_tm);
+
+ if (tt->state == IWL_TI_CT_KILL) {
+ IWL_ERR(priv,
+ "Device temperature below critical"
+ "- ucode awake!\n");
+ if (!priv->power_data.adv_tt)
+ iwl_legacy_tt_handler(priv,
+ IWL_REDUCED_PERFORMANCE_THRESHOLD_2);
+ else
+ iwl_advance_tt_handler(priv, CT_KILL_EXIT_THRESHOLD);
+ }
+}
+EXPORT_SYMBOL(iwl_tt_exit_ct_kill);
+
+void iwl_tt_handler(struct iwl_priv *priv)
+{
+ s32 temp = priv->temperature; /* degrees CELSIUS except 4965 */
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return;
+
+ if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)
+ temp = KELVIN_TO_CELSIUS(priv->temperature);
+
+ if (!priv->power_data.adv_tt)
+ iwl_legacy_tt_handler(priv, temp);
+ else
+ iwl_advance_tt_handler(priv, temp);
+}
+EXPORT_SYMBOL(iwl_tt_handler);
+
+/* Thermal throttling initialization
+ * For advance thermal throttling:
+ * Initialize Thermal Index and temperature threshold table
+ * Initialize thermal throttling restriction table
+ */
+void iwl_tt_initialize(struct iwl_priv *priv)
+{
+ struct iwl_tt_mgmt *tt = &priv->power_data.tt;
+ struct iwl_power_mgr *setting = &priv->power_data;
+ int size = sizeof(struct iwl_tt_trans) * (IWL_TI_STATE_MAX - 1);
+ struct iwl_tt_trans *transaction;
+
+ IWL_DEBUG_POWER(priv, "Initialize Thermal Throttling \n");
+
+ memset(tt, 0, sizeof(struct iwl_tt_mgmt));
+
+ tt->state = IWL_TI_0;
+ tt->sys_power_mode = setting->power_mode;
+ tt->tt_power_mode = tt->sys_power_mode;
+ init_timer(&priv->power_data.ct_kill_exit_tm);
+ priv->power_data.ct_kill_exit_tm.data = (unsigned long)priv;
+ priv->power_data.ct_kill_exit_tm.function = iwl_tt_check_exit_ct_kill;
+ switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
+ case CSR_HW_REV_TYPE_6x00:
+ case CSR_HW_REV_TYPE_6x50:
+ IWL_DEBUG_POWER(priv, "Advanced Thermal Throttling\n");
+ tt->restriction = kzalloc(sizeof(struct iwl_tt_restriction) *
+ IWL_TI_STATE_MAX, GFP_KERNEL);
+ tt->transaction = kzalloc(sizeof(struct iwl_tt_trans) *
+ IWL_TI_STATE_MAX * (IWL_TI_STATE_MAX - 1),
+ GFP_KERNEL);
+ if (!tt->restriction || !tt->transaction) {
+ IWL_ERR(priv, "Fallback to Legacy Throttling\n");
+ priv->power_data.adv_tt = false;
+ kfree(tt->restriction);
+ tt->restriction = NULL;
+ kfree(tt->transaction);
+ tt->transaction = NULL;
+ } else {
+ transaction = tt->transaction +
+ (IWL_TI_0 * (IWL_TI_STATE_MAX - 1));
+ memcpy(transaction, &tt_range_0[0], size);
+ transaction = tt->transaction +
+ (IWL_TI_1 * (IWL_TI_STATE_MAX - 1));
+ memcpy(transaction, &tt_range_1[0], size);
+ transaction = tt->transaction +
+ (IWL_TI_2 * (IWL_TI_STATE_MAX - 1));
+ memcpy(transaction, &tt_range_2[0], size);
+ transaction = tt->transaction +
+ (IWL_TI_CT_KILL * (IWL_TI_STATE_MAX - 1));
+ memcpy(transaction, &tt_range_3[0], size);
+ size = sizeof(struct iwl_tt_restriction) *
+ IWL_TI_STATE_MAX;
+ memcpy(tt->restriction,
+ &restriction_range[0], size);
+ priv->power_data.adv_tt = true;
+ }
+ break;
+ default:
+ IWL_DEBUG_POWER(priv, "Legacy Thermal Throttling\n");
+ priv->power_data.adv_tt = false;
+ break;
+ }
+}
+EXPORT_SYMBOL(iwl_tt_initialize);
+
+/* cleanup thermal throttling management related memory and timer */
+void iwl_tt_exit(struct iwl_priv *priv)
+{
+ struct iwl_tt_mgmt *tt = &priv->power_data.tt;
+
+ /* stop ct_kill_exit_tm timer if activated */
+ del_timer_sync(&priv->power_data.ct_kill_exit_tm);
+
+ if (priv->power_data.adv_tt) {
+ /* free advance thermal throttling memory */
+ kfree(tt->restriction);
+ tt->restriction = NULL;
+ kfree(tt->transaction);
+ tt->transaction = NULL;
+ }
+}
+EXPORT_SYMBOL(iwl_tt_exit);
+
/* initialize to default */
void iwl_power_initialize(struct iwl_priv *priv)
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-06 22:44:08 +0000