/* SPDX-License-Identifier: LGPL-2.1-only OR BSD-3-Clause */
/******************************************************************************
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 *
 * Copyright(C) 2019 MediaTek Inc.
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 * BSD LICENSE
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/*-----------------------------------------------------------------------------
 * $Author: dtvbm11 $
 * $Date: 2015/11/10 $
 * $RCSfile: cb_tim.c,v $
 * $Revision: #1 $
 *---------------------------------------------------------------------------*/

/** @file cb_tim.c
 *  This file implements callback interface of timer.
 */


//-----------------------------------------------------------------------------
// Include files
//-----------------------------------------------------------------------------

#include "cb_tim.h"
#include "cb_low.h"
#include <linux/module.h>
#include <linux/timer.h>


//-----------------------------------------------------------------------------
// Static variables
//-----------------------------------------------------------------------------

/// Timer list.
static struct timer_list timer;

/// Timer interval (ms).
static unsigned int _ui4Delay = 10;

/// Counter.
static unsigned int _ui4Counter = 0;


//-----------------------------------------------------------------------------
// Static functions
//-----------------------------------------------------------------------------

//-----------------------------------------------------------------------------
/** Timer callback function.
 *  @param  param   Callback parameter, unused here.
 */
//-----------------------------------------------------------------------------
static void _TimerCbFct(unsigned long param)
{
    TIM_CB_T rTimCb;

    ++ _ui4Counter;
    timer.expires = jiffies + _ui4Delay * HZ / 1000;
    add_timer(&timer);

    rTimCb.i4Cnt = _ui4Counter;
    _CB_PutEvent(CB_TIM_TRIGGER, sizeof(TIM_CB_T), &rTimCb);
}

//-----------------------------------------------------------------------------
/** Initialize timer.
 */
//-----------------------------------------------------------------------------
static void _TimerInit(void)
{
    init_timer(&timer);

    timer.expires = jiffies + _ui4Delay * HZ / 1000;
    timer.function = _TimerCbFct;
    timer.data = 0;

    add_timer(&timer);
}


//-----------------------------------------------------------------------------
// Inter-file functions
//-----------------------------------------------------------------------------

//-----------------------------------------------------------------------------
/** To register/enable timer callback function.
 *  @param  i4SubId     ID to identify subcomponent, or other parameter.
 *  @retval CBR_OK      Success.
 */
//-----------------------------------------------------------------------------
INT32 _TIM_RegTrigger(INT32 i4SubId)
{
    _ui4Delay = (UINT32)i4SubId;

    _TimerInit();

    return CBR_OK;
}

