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/*****************************************************************************
 *
 * Filename:
 * ---------
 *    gpt.c
 *
 * Project:
 * --------
 *   Maui_Software
 *
 * Description:
 * ------------
 *   This Module defines the GPT driver.
 *
 * Author:
 * -------
 *  James Liu
 *
 ****************************************************************************/
#include "hal_gpt.h"

#ifdef HAL_GPT_MODULE_ENABLED
#include "type_def.h"
#include "_mtk_hal_debug.h"

#include "gpt.h"
#include "nvic.h"
#include "system_mt7687.h"
#include "timer.h"
#include "hal_nvic.h"


static GPTStruct GPTTimer;


//workaround: ADC use sys tick to access FIFO instead of GPT
volatile UINT32 g_u4ClkCnt1ms = 0;

void GPT_ResetTimer(kal_uint32 timerNum, kal_uint32 countValue, bool autoRepeat)
{
    ASSERT(timerNum == 0 || timerNum == 1);

    if (timerNum == 0) {
        DRV_Reg32(GPT0_ICNT) = countValue;
        if (KAL_TRUE == autoRepeat) {
            DRV_Reg32(GPT0_CTRL) |= GPT_CTRL_AUTOMODE;
        } else {
            DRV_Reg32(GPT0_CTRL) &= ~GPT_CTRL_AUTOMODE;
        }
    } else if (timerNum == 1) {
        DRV_Reg32(GPT1_ICNT) = countValue;
        if (KAL_TRUE == autoRepeat) {
            DRV_Reg32(GPT1_CTRL) |= GPT_CTRL_AUTOMODE;
        } else {
            DRV_Reg32(GPT1_CTRL) &= ~GPT_CTRL_AUTOMODE;
        }
    }
}

void GPT_Start(kal_uint32 timerNum)
{
    ASSERT(timerNum == 0 || timerNum == 1 || timerNum == 4);

    if (timerNum == 0) {
        DRV_Reg32(GPT0_CTRL) |= GPT_CTRL_EN;
        NVIC_EnableIRQ((IRQn_Type)CM4_GPT_IRQ);
    } else if (timerNum == 1) {
        DRV_Reg32(GPT1_CTRL) |= GPT_CTRL_EN;
        NVIC_EnableIRQ((IRQn_Type)CM4_GPT_IRQ);
    } else if (timerNum == 4) {
        DRV_Reg32(GPT4_CTRL) |= GPT_CTRL_EN;
    }

}

void GPT_Stop(kal_uint32 timerNum)
{
    if (timerNum == 0) {
        DRV_Reg32(GPT_IER)   &= ~GPT0_INT_EN;
        DRV_Reg32(GPT0_CTRL) &= ~GPT_CTRL_EN;
        DRV_Reg32(GPT_ISR)    = GPT0_INT;

    } else if (timerNum == 1) {
        DRV_Reg32(GPT_IER)   &= ~GPT1_INT_EN;
        DRV_Reg32(GPT1_CTRL) &= ~GPT_CTRL_EN;
        DRV_Reg32(GPT_ISR)    = GPT1_INT;
    } else if (timerNum == 2) {
        DRV_Reg32(GPT2_CTRL) &= ~GPT_CTRL_EN;
    } else if (timerNum == 4) {
        DRV_Reg32(GPT4_CTRL) &= ~GPT_CTRL_EN;
    }


}

void GPT_INT_Handler(hal_nvic_irq_t irq_number)
{
    kal_uint16 GPT_Status;

    irq_number = irq_number;
    GPT_Status = DRV_Reg32(GPT_ISR);
    DRV_Reg32(GPT_ISR) = GPT_Status;

    if (GPT_Status & GPT0_INT) {
        clear_TMR_INT_status_bit(TMR0); //clear gpt Int status bit
        GPTTimer.GPT_FUNC.gpt0_func();
    } else if (GPT_Status & GPT1_INT) {
        clear_TMR_INT_status_bit(TMR1); //clear gpt Int status bit
        GPTTimer.GPT_FUNC.gpt1_func();
    }
}

void GPT_init(kal_uint32 timerNum, kal_uint32 speed_32us, void (*GPT_Callback)(void))
{
    ASSERT(timerNum == 0 || timerNum == 1 || timerNum == 2 || timerNum == 4);

    if (timerNum == 0 || timerNum == 1) {
        hal_nvic_register_isr_handler((IRQn_Type)CM4_GPT_IRQ, GPT_INT_Handler); /* GPT0 and GPT1 share the same IRQ line */
        NVIC_SetPriority((IRQn_Type)CM4_GPT_IRQ, CM4_GPT_PRI);
        NVIC_EnableIRQ((IRQn_Type)CM4_GPT_IRQ);
    }

    if (timerNum == 0) {
        GPTTimer.GPT_FUNC.gpt0_func = GPT_Callback;
        DRV_Reg32(GPT_IER)   |= GPT0_INT_EN;
        DRV_Reg32(GPT0_CTRL) |= (speed_32us << 2);
    } else if (timerNum == 1) {
        GPTTimer.GPT_FUNC.gpt1_func = GPT_Callback;
        DRV_Reg32(GPT_IER)   |= GPT1_INT_EN;
        DRV_Reg32(GPT1_CTRL) |= (speed_32us << 2);
    } else if (timerNum == 2) {
        DRV_Reg32(GPT2_CTRL) |= GPT_CTRL_EN | (speed_32us << 1);
    } else if (timerNum == 4) {
        DRV_Reg32(GPT4_CTRL) |= GPT_CTRL_EN | (speed_32us << 1);  //bus clock or half bus clock
        DRV_Reg32(GPT4_INIT) = 0;
    }
}

kal_uint32 GPT_return_current_count(kal_uint32 timerNum)
{
    kal_uint32 current_count;

    ASSERT(timerNum == 0 || timerNum == 1 || timerNum == 2 || timerNum == 4);

    if (timerNum == 0) {
        current_count = DRV_Reg32(GPT0_CNT);
    } else if (timerNum == 1) {
        current_count = DRV_Reg32(GPT1_CNT);
    } else if (timerNum == 2) {
        current_count = DRV_Reg32(GPT2_CNT);
    } else if (timerNum == 4) {
        current_count = DRV_Reg32(GPT4_CNT);
    }

    return current_count;
}


void CM4_GPT2Init(void)
{
    GPT_init(2, 1, NULL);   //speed: 1x32k hz
}

void CM4_GPT4Init(void)
{
    GPT_init(4, 1, NULL);  //speed: bus clock
}

#endif