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/*****************************************************************************
*
* Module Name: tz.h
* $Revision: 24 $
*
*****************************************************************************/
/*
* Copyright (C) 2000, 2001 Andrew Grover
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __TZ_H__
#define __TZ_H__
/* TBD: Linux-specific */
#include <linux/module.h>
#include <linux/timer.h>
#include <bm.h>
#include <pr.h>
/*****************************************************************************
* Types & Other Defines
*****************************************************************************/
#define TZ_MAX_THRESHOLDS 12 /* _AC0 through _AC9 + _CRT + _PSV */
#define TZ_MAX_ACTIVE_THRESHOLDS 10 /* _AC0 through _AC9 */
#define TZ_MAX_COOLING_DEVICES 10 /* TBD: Make size dynamic */
/*
* Notifications:
* --------------
*/
#define TZ_NOTIFY_TEMPERATURE_CHANGE ((BM_NOTIFY) 0x80)
#define TZ_NOTIFY_THRESHOLD_CHANGE ((BM_NOTIFY) 0x81)
#define TZ_NOTIFY_DEVICE_LISTS_CHANGE ((BM_NOTIFY) 0x82)
/*
* TZ_THRESHOLD_TYPE:
* ------------------
*/
typedef u32 TZ_THRESHOLD_TYPE;
#define TZ_THRESHOLD_UNKNOWN ((TZ_THRESHOLD_TYPE) 0x00)
#define TZ_THRESHOLD_CRITICAL ((TZ_THRESHOLD_TYPE) 0x01)
#define TZ_THRESHOLD_PASSIVE ((TZ_THRESHOLD_TYPE) 0x02)
#define TZ_THRESHOLD_ACTIVE ((TZ_THRESHOLD_TYPE) 0x03)
/*
* TZ_COOLING_STATE:
* -----------------
*/
typedef u32 TZ_COOLING_STATE;
#define TZ_COOLING_UNKNOWN ((TZ_COOLING_STATE) 0x00)
#define TZ_COOLING_ENABLED ((TZ_COOLING_STATE) 0x01)
#define TZ_COOLING_DISABLED ((TZ_COOLING_STATE) 0x02)
/*
* TZ_COOLING_MODE:
* ----------------
*/
typedef u32 TZ_COOLING_MODE;
#define TZ_COOLING_MODE_ACTIVE ((TZ_COOLING_MODE) 0x00)
#define TZ_COOLING_MODE_PASSIVE ((TZ_COOLING_MODE) 0x01)
/*
* Thermal State:
* --------------
* The encoding of TZ_STATE is illustrated below.
* Note that a set bit (1) indicates the property is TRUE
* (e.g. if bit 0 is set then the device has dynamic status).
* No bits set indicates an OK cooling state.
* +--+--+--+-----------+----------+
* |31|30|29| Bits 27:4 | Bits 3:0 |
* +--+--+--+-----------+----------+
* | | | | |
* | | | | +------ Active Index
* | | | +----------------- <reserved>
* | | +------------------------- Active
* | +---------------------------- Passive
* +------------------------------- Critical
*
* Active Index: Value representing the level of active cooling
* presently applied (e.g. 0=_AL0, 9=_AL9). Only
* valid when 'Active' is set.
* Active: If set, indicates that the system temperature
* has crossed at least one active threshold (_ALx).
* Passive: If set, indicates that the system temperature
* has crossed the passive threshold (_PSL).
* Passive: If set, indicates that the system temperature
* has crossed the critical threshold (_CRT).
*/
typedef u32 TZ_STATE;
#define TZ_STATE_OK ((TZ_STATE) 0x00000000)
#define TZ_STATE_HOT ((TZ_STATE) 0x10000000)
#define TZ_STATE_ACTIVE ((TZ_STATE) 0x20000000)
#define TZ_STATE_PASSIVE ((TZ_STATE) 0x40000000)
#define TZ_STATE_CRITICAL ((TZ_STATE) 0x80000000)
typedef struct {
u32 temperature;
} TZ_CRITICAL_THRESHOLD;
typedef struct {
u8 is_valid;
u32 temperature;
} TZ_HOT_THRESHOLD;
typedef struct {
u8 is_valid;
u32 temperature;
u32 tc1;
u32 tc2;
u32 tsp;
BM_HANDLE_LIST devices;
} TZ_PASSIVE_THRESHOLD;
typedef struct {
u8 is_valid;
u32 temperature;
TZ_COOLING_STATE cooling_state;
BM_HANDLE_LIST devices;
} TZ_ACTIVE_THRESHOLD;
typedef struct {
TZ_CRITICAL_THRESHOLD critical;
TZ_HOT_THRESHOLD hot;
TZ_PASSIVE_THRESHOLD passive;
TZ_ACTIVE_THRESHOLD active[TZ_MAX_ACTIVE_THRESHOLDS];
} TZ_THRESHOLDS;
/*
* TZ_POLICY:
* ---------
*/
typedef struct {
u32 temperature;
TZ_STATE state;
TZ_COOLING_MODE cooling_mode;
u32 polling_freq;
TZ_THRESHOLDS thresholds;
struct timer_list timer;
} TZ_POLICY;
/*
* TZ_CONTEXT:
* -----------
*/
typedef struct {
BM_HANDLE device_handle;
acpi_handle acpi_handle;
char uid[9];
TZ_POLICY policy;
} TZ_CONTEXT;
/*****************************************************************************
* Function Prototypes
*****************************************************************************/
/* tz.c */
acpi_status
tz_initialize (void);
acpi_status
tz_terminate (void);
acpi_status
tz_notify (
BM_NOTIFY notify_type,
BM_HANDLE device_handle,
BM_DRIVER_CONTEXT *context);
acpi_status
tz_request (
BM_REQUEST *request,
BM_DRIVER_CONTEXT context);
acpi_status
tz_get_temperature (
TZ_CONTEXT *tz);
acpi_status
tz_get_thresholds (
TZ_CONTEXT *tz);
acpi_status
tz_set_cooling_preference (
TZ_CONTEXT *tz,
TZ_COOLING_MODE cooling_mode);
void
tz_print (
TZ_CONTEXT *tz);
/* tzpolicy.c */
acpi_status
tz_policy_add_device (
TZ_CONTEXT *tz);
acpi_status
tz_policy_remove_device (
TZ_CONTEXT *tz);
void
tz_policy_check (
void *context);
/* tz_osl.c */
acpi_status
tz_osl_add_device (
TZ_CONTEXT *tz);
acpi_status
tz_osl_remove_device (
TZ_CONTEXT *tz);
acpi_status
tz_osl_generate_event (
u32 event,
TZ_CONTEXT *tz);
#endif /* __TZ_H__ */
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