/* SPDX-License-Identifier: GPL-2.0-only */
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/******************************************************************************
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*
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* Copyright(c) 2007 - 2014 Intel Corporation. All rights reserved.
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*
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* Portions of this file are derived from the ipw3945 project, as well
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* as portions of the ieee80211 subsystem header files.
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*
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* Contact Information:
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* Intel Linux Wireless <linuxwifi@intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*****************************************************************************/
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#ifndef __iwl_tt_setting_h__
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#define __iwl_tt_setting_h__
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#include "commands.h"
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#define IWL_ABSOLUTE_ZERO 0
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#define IWL_ABSOLUTE_MAX 0xFFFFFFFF
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#define IWL_TT_INCREASE_MARGIN 5
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#define IWL_TT_CT_KILL_MARGIN 3
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enum iwl_antenna_ok {
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IWL_ANT_OK_NONE,
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IWL_ANT_OK_SINGLE,
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IWL_ANT_OK_MULTI,
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};
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/* Thermal Throttling State Machine states */
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enum iwl_tt_state {
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IWL_TI_0, /* normal temperature, system power state */
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IWL_TI_1, /* high temperature detect, low power state */
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IWL_TI_2, /* higher temperature detected, lower power state */
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IWL_TI_CT_KILL, /* critical temperature detected, lowest power state */
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IWL_TI_STATE_MAX
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};
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/**
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* struct iwl_tt_restriction - Thermal Throttling restriction table
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* @tx_stream: number of tx stream allowed
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* @is_ht: ht enable/disable
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* @rx_stream: number of rx stream allowed
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*
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* This table is used by advance thermal throttling management
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* based on the current thermal throttling state, and determines
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* the number of tx/rx streams and the status of HT operation.
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*/
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struct iwl_tt_restriction {
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enum iwl_antenna_ok tx_stream;
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enum iwl_antenna_ok rx_stream;
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bool is_ht;
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};
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/**
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* struct iwl_tt_trans - Thermal Throttling transaction table
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* @next_state: next thermal throttling mode
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* @tt_low: low temperature threshold to change state
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* @tt_high: high temperature threshold to change state
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*
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* This is used by the advanced thermal throttling algorithm
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* to determine the next thermal state to go based on the
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* current temperature.
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*/
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struct iwl_tt_trans {
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enum iwl_tt_state next_state;
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u32 tt_low;
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u32 tt_high;
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};
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/**
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* struct iwl_tt_mgnt - Thermal Throttling Management structure
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* @advanced_tt: advanced thermal throttle required
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* @state: current Thermal Throttling state
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* @tt_power_mode: Thermal Throttling power mode index
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* being used to set power level when
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* when thermal throttling state != IWL_TI_0
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* the tt_power_mode should set to different
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* power mode based on the current tt state
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* @tt_previous_temperature: last measured temperature
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* @iwl_tt_restriction: ptr to restriction tbl, used by advance
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* thermal throttling to determine how many tx/rx streams
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* should be used in tt state; and can HT be enabled or not
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* @iwl_tt_trans: ptr to adv trans table, used by advance thermal throttling
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* state transaction
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* @ct_kill_toggle: used to toggle the CSR bit when checking uCode temperature
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* @ct_kill_exit_tm: timer to exit thermal kill
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*/
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struct iwl_tt_mgmt {
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enum iwl_tt_state state;
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bool advanced_tt;
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u8 tt_power_mode;
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bool ct_kill_toggle;
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#ifdef CONFIG_IWLWIFI_DEBUG
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s32 tt_previous_temp;
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#endif
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struct iwl_tt_restriction *restriction;
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struct iwl_tt_trans *transaction;
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struct timer_list ct_kill_exit_tm;
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struct timer_list ct_kill_waiting_tm;
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};
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u8 iwl_tt_current_power_mode(struct iwl_priv *priv);
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bool iwl_tt_is_low_power_state(struct iwl_priv *priv);
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bool iwl_ht_enabled(struct iwl_priv *priv);
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enum iwl_antenna_ok iwl_tx_ant_restriction(struct iwl_priv *priv);
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enum iwl_antenna_ok iwl_rx_ant_restriction(struct iwl_priv *priv);
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void iwl_tt_enter_ct_kill(struct iwl_priv *priv);
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void iwl_tt_exit_ct_kill(struct iwl_priv *priv);
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void iwl_tt_handler(struct iwl_priv *priv);
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void iwl_tt_initialize(struct iwl_priv *priv);
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void iwl_tt_exit(struct iwl_priv *priv);
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#endif /* __iwl_tt_setting_h__ */
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