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/*****************************************************************************/
/* */
/* Name: hidd_pm.c */
/* */
/* Description: this file contains the HID Device Power Management logic */
/* */
/* */
/* Copyright (c) 2002-2004, WIDCOMM Inc., All Rights Reserved. */
/* WIDCOMM Bluetooth Core. Proprietary and confidential. */
/*****************************************************************************/
#include "gki.h"
#include "bt_types.h"
#include "hiddefs.h"
#include "btm_api.h"
#include "string.h"
#include "hiddefs.h"
#include "hidd_api.h"
#include "hidd_int.h"
#include "btu.h"
#if HID_DEV_PM_INCLUDED == TRUE
/*******************************************************************************
**
** Function hidd_pm_init
**
** Description This function is called when connection is established. It
** initializes the control block for power management.
**
** Returns void
**
*******************************************************************************/
static const tHID_DEV_PM_PWR_MD pwr_modes[] =
{
HID_DEV_BUSY_MODE_PARAMS,
HID_DEV_IDLE_MODE_PARAMS,
HID_DEV_SUSP_MODE_PARAMS
};
void hidd_pm_init( void )
{
int i;
hd_cb.curr_pm.mode = HCI_MODE_ACTIVE ;
hd_cb.final_pm.mode = 0xff;
for( i=0; i<3; i++ )
memcpy( &hd_cb.pm_params[i], &pwr_modes[i], sizeof( tHID_DEV_PM_PWR_MD ) ) ;
hd_cb.pm_ctrl_busy = FALSE;
}
/*******************************************************************************
**
** Function hidd_pm_set_now
**
** Description This drives the BTM for power management settings.
**
** Returns TRUE if Success, FALSE otherwise
**
*******************************************************************************/
BOOLEAN hidd_pm_set_now( tHID_DEV_PM_PWR_MD *p_req_mode)
{
tHID_DEV_PM_PWR_MD act_pm = { 0, 0, 0, 0, HCI_MODE_ACTIVE } ;
UINT8 st = BTM_SUCCESS;
/* Do nothing if already in required state or already performing a pm function */
if( (hd_cb.pm_ctrl_busy) ||
((p_req_mode->mode == hd_cb.curr_pm.mode) && ( (p_req_mode->mode == HCI_MODE_ACTIVE) ||
((hd_cb.curr_pm.interval >= p_req_mode->min) && (hd_cb.curr_pm.interval <= p_req_mode->max)) )) )
{
hd_cb.final_pm.mode = 0xff;
return TRUE;
}
switch( p_req_mode->mode )
{
case HCI_MODE_ACTIVE:
if( hd_cb.curr_pm.mode == HCI_MODE_SNIFF )
{
#if BTM_PWR_MGR_INCLUDED == TRUE
st = BTM_SetPowerMode (BTM_PM_SET_ONLY_ID, hd_cb.host_addr, (tBTM_PM_PWR_MD *) &act_pm);
#else
st = BTM_CancelSniffMode (hd_cb.host_addr);
#endif
hd_cb.pm_ctrl_busy = TRUE;
}
else if( hd_cb.curr_pm.mode == HCI_MODE_PARK )
{
#if BTM_PWR_MGR_INCLUDED == TRUE
st = BTM_SetPowerMode (BTM_PM_SET_ONLY_ID, hd_cb.host_addr, (tBTM_PM_PWR_MD *) &act_pm);
#else
st = BTM_CancelParkMode (hd_cb.host_addr);
#endif
hd_cb.pm_ctrl_busy = TRUE;
}
break;
case HCI_MODE_SNIFF:
if( hd_cb.curr_pm.mode != HCI_MODE_ACTIVE ) /* Transition through active state required */
hidd_pm_set_now (&act_pm);
else
{
#if BTM_PWR_MGR_INCLUDED == TRUE
st = BTM_SetPowerMode (BTM_PM_SET_ONLY_ID, hd_cb.host_addr, (tBTM_PM_PWR_MD *) p_req_mode);
#else
st = BTM_SetSniffMode (hd_cb.host_addr, p_req_mode->min, p_req_mode->max, p_req_mode->attempt, p_req_mode->timeout);
#endif
hd_cb.pm_ctrl_busy = TRUE;
}
break;
case HCI_MODE_PARK:
if( hd_cb.curr_pm.mode != HCI_MODE_ACTIVE ) /* Transition through active state required */
hidd_pm_set_now (&act_pm);
else
{
#if BTM_PWR_MGR_INCLUDED == TRUE
st = BTM_SetPowerMode (BTM_PM_SET_ONLY_ID, hd_cb.host_addr, (tBTM_PM_PWR_MD *) p_req_mode);
#else
st = BTM_SetParkMode (hd_cb.host_addr, p_req_mode->min, p_req_mode->max);
#endif
hd_cb.pm_ctrl_busy = TRUE;
}
break;
default:
break;
}
if( st == BTM_SUCCESS || st == BTM_CMD_STARTED )
return TRUE;
else
{
st += HCI_ERR_MAX_ERR ;
if( hd_cb.callback )
hd_cb.callback( HID_DEV_EVT_PM_FAILED, hd_cb.conn_substate, (tHID_DEV_CBACK_DATA *) &st ) ;
return FALSE;
}
}
/*******************************************************************************
**
** Function hidd_pm_set_power_mode
**
** Description This stores the power management setting and calls fn to set
** the power.
**
** Returns TRUE if Success, FALSE otherwise
**
*******************************************************************************/
BOOLEAN hidd_pm_set_power_mode( tHID_DEV_PM_PWR_MD *p_req_mode)
{
memcpy( &hd_cb.final_pm, p_req_mode, sizeof( tHID_DEV_PM_PWR_MD ) ) ;
return hidd_pm_set_now( p_req_mode ) ;
}
/*******************************************************************************
**
** Function hidd_pm_proc_mode_change
**
** Description This is the callback function, when power mode changes.
**
** Returns void
**
*******************************************************************************/
void hidd_pm_proc_mode_change( UINT8 hci_status, UINT8 mode, UINT16 interval )
{
if (!hd_cb.reg_flag )
return;
hd_cb.pm_ctrl_busy = FALSE;
if( hci_status != HCI_SUCCESS )
{
if( hd_cb.callback )
hd_cb.callback( HID_DEV_EVT_PM_FAILED, hd_cb.conn_substate, (tHID_DEV_CBACK_DATA *) &hci_status ) ;
}
else
{
hd_cb.curr_pm.mode = mode;
hd_cb.curr_pm.interval = interval;
if( hd_cb.final_pm.mode != 0xff )
{
/* If we haven't reached the final power mode, set it now */
if( (hd_cb.final_pm.mode != hd_cb.curr_pm.mode) ||
( (hd_cb.final_pm.mode != HCI_MODE_ACTIVE) &&
((hd_cb.curr_pm.interval < hd_cb.final_pm.min) || (hd_cb.curr_pm.interval > hd_cb.final_pm.max))
) )
{
hidd_pm_set_now( &(hd_cb.final_pm) ) ;
}
else
hd_cb.final_pm.mode = 0xff;
}
else
{
if( hd_cb.curr_pm.mode == HCI_MODE_ACTIVE )
hidd_pm_start();
}
if( hd_cb.callback )
hd_cb.callback( HID_DEV_EVT_MODE_CHG, mode, (tHID_DEV_CBACK_DATA *) &interval) ;
}
}
/*******************************************************************************
**
** Function hidd_pm_inact_timeout
**
** Description Called when idle timer expires.
**
** Returns void
**
*******************************************************************************/
void hidd_pm_inact_timeout (TIMER_LIST_ENT *p_tle)
{
hidd_pm_set_power_mode ( &(hd_cb.pm_params[HID_DEV_IDLE_CONN_ST]));
hd_cb.conn_substate = HID_DEV_IDLE_CONN_ST;
}
/*******************************************************************************
**
** Function hidd_pm_start
**
** Description Starts the power management function in a given state.
**
** Returns tHID_STATUS
**
*******************************************************************************/
tHID_STATUS hidd_pm_start( void )
{
hidd_pm_set_power_mode ( &(hd_cb.pm_params[HID_DEV_BUSY_CONN_ST]) );
hd_cb.conn_substate = HID_DEV_BUSY_CONN_ST;
hd_cb.idle_tle.param = (UINT32) hidd_pm_inact_timeout;
btu_start_timer (&hd_cb.idle_tle, BTU_TTYPE_USER_FUNC, HID_DEV_INACT_TIMEOUT);
return( HID_SUCCESS );
}
/*******************************************************************************
**
** Function hidd_pm_stop
**
** Description Stops the idle timer.
**
** Returns tHID_STATUS
**
*******************************************************************************/
tHID_STATUS hidd_pm_stop( void )
{
tHID_DEV_PM_PWR_MD p_md = { 0, 0, 0, 0, HCI_MODE_ACTIVE };
hidd_pm_set_power_mode( &p_md );
btu_stop_timer( &hd_cb.idle_tle ) ;
return( HID_SUCCESS );
}
/*******************************************************************************
**
** Function hidd_pm_suspend_evt
**
** Description Called when host suspends the device.
**
** Returns tHID_STATUS
**
*******************************************************************************/
tHID_STATUS hidd_pm_suspend_evt( void )
{
if( hd_cb.conn_substate == HID_DEV_BUSY_CONN_ST )
btu_stop_timer( &hd_cb.idle_tle ) ;
hidd_pm_set_power_mode ( &(hd_cb.pm_params[HID_DEV_SUSP_CONN_ST]) );
hd_cb.conn_substate = HID_DEV_SUSP_CONN_ST;
return( HID_SUCCESS );
}
#endif /* HID_DEV_PM_INCLUDED == TRUE */
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