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/******************************************************************************
*
* Copyright(c) 2007 - 2011 Intel Corporation. All rights reserved.
*
* Portions of this file are derived from the ipw3945 project, as well
* as portions of the ieee80211 subsystem header files.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*
* The full GNU General Public License is included in this distribution in the
* file called LICENSE.
*
* Contact Information:
* Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*****************************************************************************/
#ifndef __iwl_tt_setting_h__
#define __iwl_tt_setting_h__
#include "iwl-commands.h"
#define IWL_ABSOLUTE_ZERO 0
#define IWL_ABSOLUTE_MAX 0xFFFFFFFF
#define IWL_TT_INCREASE_MARGIN 5
#define IWL_TT_CT_KILL_MARGIN 3
enum iwl_antenna_ok {
IWL_ANT_OK_NONE,
IWL_ANT_OK_SINGLE,
IWL_ANT_OK_MULTI,
};
/* Thermal Throttling State Machine states */
enum iwl_tt_state {
IWL_TI_0, /* normal temperature, system power state */
IWL_TI_1, /* high temperature detect, low power state */
IWL_TI_2, /* higher temperature detected, lower power state */
IWL_TI_CT_KILL, /* critical temperature detected, lowest power state */
IWL_TI_STATE_MAX
};
/**
* struct iwl_tt_restriction - Thermal Throttling restriction table
* @tx_stream: number of tx stream allowed
* @is_ht: ht enable/disable
* @rx_stream: number of rx stream allowed
*
* This table is used by advance thermal throttling management
* based on the current thermal throttling state, and determines
* the number of tx/rx streams and the status of HT operation.
*/
struct iwl_tt_restriction {
enum iwl_antenna_ok tx_stream;
enum iwl_antenna_ok rx_stream;
bool is_ht;
};
/**
* struct iwl_tt_trans - Thermal Throttling transaction table
* @next_state: next thermal throttling mode
* @tt_low: low temperature threshold to change state
* @tt_high: high temperature threshold to change state
*
* This is used by the advanced thermal throttling algorithm
* to determine the next thermal state to go based on the
* current temperature.
*/
struct iwl_tt_trans {
enum iwl_tt_state next_state;
u32 tt_low;
u32 tt_high;
};
/**
* struct iwl_tt_mgnt - Thermal Throttling Management structure
* @advanced_tt: advanced thermal throttle required
* @state: current Thermal Throttling state
* @tt_power_mode: Thermal Throttling power mode index
* being used to set power level when
* when thermal throttling state != IWL_TI_0
* the tt_power_mode should set to different
* power mode based on the current tt state
* @tt_previous_temperature: last measured temperature
* @iwl_tt_restriction: ptr to restriction tbl, used by advance
* thermal throttling to determine how many tx/rx streams
* should be used in tt state; and can HT be enabled or not
* @iwl_tt_trans: ptr to adv trans table, used by advance thermal throttling
* state transaction
* @ct_kill_toggle: used to toggle the CSR bit when checking uCode temperature
* @ct_kill_exit_tm: timer to exit thermal kill
*/
struct iwl_tt_mgmt {
enum iwl_tt_state state;
bool advanced_tt;
u8 tt_power_mode;
bool ct_kill_toggle;
#ifdef CONFIG_IWLWIFI_DEBUG
s32 tt_previous_temp;
#endif
struct iwl_tt_restriction *restriction;
struct iwl_tt_trans *transaction;
struct timer_list ct_kill_exit_tm;
struct timer_list ct_kill_waiting_tm;
};
u8 iwl_tt_current_power_mode(struct iwl_priv *priv);
bool iwl_tt_is_low_power_state(struct iwl_priv *priv);
bool iwl_ht_enabled(struct iwl_priv *priv);
bool iwl_check_for_ct_kill(struct iwl_priv *priv);
enum iwl_antenna_ok iwl_tx_ant_restriction(struct iwl_priv *priv);
enum iwl_antenna_ok iwl_rx_ant_restriction(struct iwl_priv *priv);
void iwl_tt_enter_ct_kill(struct iwl_priv *priv);
void iwl_tt_exit_ct_kill(struct iwl_priv *priv);
void iwl_tt_handler(struct iwl_priv *priv);
void iwl_tt_initialize(struct iwl_priv *priv);
void iwl_tt_exit(struct iwl_priv *priv);
#endif /* __iwl_tt_setting_h__ */
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