drivers/net/wireless/iwlwifi/iwl-power.h

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2007 - 2009 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *****************************************************************************/
  28 #ifndef __iwl_power_setting_h__
  29 #define __iwl_power_setting_h__
  30
  31 #include "iwl-commands.h"
  32
  33 #define IWL_ABSOLUTE_ZERO               0
  34 #define IWL_ABSOLUTE_MAX                0xFFFFFFFF
  35 #define IWL_TT_INCREASE_MARGIN  5
  36
  37 enum iwl_antenna_ok {
  38         IWL_ANT_OK_NONE,
  39         IWL_ANT_OK_SINGLE,
  40         IWL_ANT_OK_MULTI,
  41 };
  42
  43 /* Thermal Throttling State Machine states */
  44 enum  iwl_tt_state {
  45         IWL_TI_0,       /* normal temperature, system power state */
  46         IWL_TI_1,       /* high temperature detect, low power state */
  47         IWL_TI_2,       /* higher temperature detected, lower power state */
  48         IWL_TI_CT_KILL, /* critical temperature detected, lowest power state */
  49         IWL_TI_STATE_MAX
  50 };
  51
  52 /**
  53  * struct iwl_tt_restriction - Thermal Throttling restriction table
  54  * @tx_stream: number of tx stream allowed
  55  * @is_ht: ht enable/disable
  56  * @rx_stream: number of rx stream allowed
  57  *
  58  * This table is used by advance thermal throttling management
  59  * based on the current thermal throttling state, and determines
  60  * the number of tx/rx streams and the status of HT operation.
  61  */
  62 struct iwl_tt_restriction {
  63         enum iwl_antenna_ok tx_stream;
  64         enum iwl_antenna_ok rx_stream;
  65         bool is_ht;
  66 };
  67
  68 /**
  69  * struct iwl_tt_trans - Thermal Throttling transaction table
  70  * @next_state:  next thermal throttling mode
  71  * @tt_low: low temperature threshold to change state
  72  * @tt_high: high temperature threshold to change state
  73  *
  74  * This is used by the advanced thermal throttling algorithm
  75  * to determine the next thermal state to go based on the
  76  * current temperature.
  77  */
  78 struct iwl_tt_trans {
  79         enum iwl_tt_state next_state;
  80         u32 tt_low;
  81         u32 tt_high;
  82 };
  83
  84 /**
  85  * struct iwl_tt_mgnt - Thermal Throttling Management structure
  86  * @advanced_tt:    advanced thermal throttle required
  87  * @state:          current Thermal Throttling state
  88  * @tt_power_mode:  Thermal Throttling power mode index
  89  *                  being used to set power level when
  90  *                  when thermal throttling state != IWL_TI_0
  91  *                  the tt_power_mode should set to different
  92  *                  power mode based on the current tt state
  93  * @tt_previous_temperature: last measured temperature
  94  * @iwl_tt_restriction: ptr to restriction tbl, used by advance
  95  *                  thermal throttling to determine how many tx/rx streams
  96  *                  should be used in tt state; and can HT be enabled or not
  97  * @iwl_tt_trans: ptr to adv trans table, used by advance thermal throttling
  98  *                  state transaction
  99  * @ct_kill_toggle: used to toggle the CSR bit when checking uCode temperature
 100  * @ct_kill_exit_tm: timer to exit thermal kill
 101  */
 102 struct iwl_tt_mgmt {
 103         enum iwl_tt_state state;
 104         bool advanced_tt;
 105         u8 tt_power_mode;
 106         bool ct_kill_toggle;
 107 #ifdef CONFIG_IWLWIFI_DEBUG
 108         s32 tt_previous_temp;
 109 #endif
 110         struct iwl_tt_restriction *restriction;
 111         struct iwl_tt_trans *transaction;
 112         struct timer_list ct_kill_exit_tm;
 113 };
 114
 115 enum iwl_power_level {
 116         IWL_POWER_INDEX_1,
 117         IWL_POWER_INDEX_2,
 118         IWL_POWER_INDEX_3,
 119         IWL_POWER_INDEX_4,
 120         IWL_POWER_INDEX_5,
 121         IWL_POWER_NUM
 122 };
 123
 124 struct iwl_power_mgr {
 125         struct iwl_powertable_cmd sleep_cmd;
 126         int debug_sleep_level_override;
 127         bool pci_pm;
 128 };
 129
 130 int iwl_power_update_mode(struct iwl_priv *priv, bool force);
 131 bool iwl_ht_enabled(struct iwl_priv *priv);
 132 enum iwl_antenna_ok iwl_tx_ant_restriction(struct iwl_priv *priv);
 133 enum iwl_antenna_ok iwl_rx_ant_restriction(struct iwl_priv *priv);
 134 void iwl_tt_enter_ct_kill(struct iwl_priv *priv);
 135 void iwl_tt_exit_ct_kill(struct iwl_priv *priv);
 136 void iwl_tt_handler(struct iwl_priv *priv);
 137 void iwl_tt_initialize(struct iwl_priv *priv);
 138 void iwl_tt_exit(struct iwl_priv *priv);
 139 void iwl_power_initialize(struct iwl_priv *priv);
 140
 141 extern bool no_sleep_autoadjust;
 142
 143 #endif  /* __iwl_power_setting_h__ */