xref: /utopia/UTPA2-700.0.x/modules/hdmi/hal/maxim/cec/mhal_cec.c (revision 53ee8cc121a030b8d368113ac3e966b4705770ef)

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//******************************************************************************
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//<MStar Software>
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// File Name: mhal_CEC.c
// Description: For CEC functions.
////////////////////////////////////////////////////////////////////////////////


#define _MHAL_CEC_C_

#ifdef MSOS_TYPE_LINUX_KERNEL
#include <linux/string.h>
#else
#include "string.h"
#endif
#include "MsCommon.h"
#include "cec_hwreg_utility2.h"
#include "cec_Analog_Reg.h"
#include "MsOS.h"
#include "apiCEC.h"
#include "MsIRQ.h"
#include "mhal_CEC.h"
#include "asmCPU.h"

MS_VIRT CEC_RIU_BASE;

#define PM_REG_WRITE    MDrv_WriteByte
#define PM_REG_READ     MDrv_ReadByte


#define MST_XTAL_CLOCK_HZ   (12000000UL)    /* Temp define */

#define _NOP_                       MAsm_CPU_Nop();

#if(defined(CONFIG_MLOG))
#include "ULog.h"

#define MHAL_CEC_MSG_INFO(format, args...)       //ULOGI("CEC", format, ##args)
#define MHAL_CEC_MSG_WARNING(format, args...)    ULOGW("CEC", format, ##args)
#define MHAL_CEC_MSG_DEBUG(format, args...)      ULOGD("CEC", format, ##args)
#define MHAL_CEC_MSG_ERROR(format, args...)      ULOGE("CEC", format, ##args)
#define MHAL_CEC_MSG_FATAL(format, args...)      ULOGF("CEC", format, ##args)

#else
#define MHAL_CEC_MSG_INFO(format, args...)       //printf(format, ##args)
#define MHAL_CEC_MSG_WARNING(format, args...)    printf(format, ##args)
#define MHAL_CEC_MSG_DEBUG(format, args...)      printf(format, ##args)
#define MHAL_CEC_MSG_ERROR(format, args...)      printf(format, ##args)
#define MHAL_CEC_MSG_FATAL(format, args...)      printf(format, ##args)

#endif

void mhal_CEC_PortSelect(MsCEC_INPUT_PORT InputPort)
{

}

void mhal_CEC_init_riu_base(MS_VIRT u32riu_base, MS_VIRT u32PMriu_base)
{
    CEC_RIU_BASE = u32PMriu_base;
}


MS_U8 mhal_CEC_HeaderSwap(MS_U8 value)
{
    return(((value&0x0f)<<4)+((value&0xf0)>>4));
}

MS_U8 mhal_CEC_SendFrame(MS_U8 header, MS_U8 opcode, MS_U8* operand, MS_U8 len)
{
    MS_U8 i, cnt, *ptr, res;
    MS_U8 u8waitcnt;

     // clear CEC TX INT status
    PM_REG_WRITE(H_BK_CEC(0x12), 0x0E);
    PM_REG_WRITE(H_BK_CEC(0x12), 0x00);
    PM_REG_WRITE( L_BK_CEC(0x18), header );
    PM_REG_WRITE( H_BK_CEC(0x18), opcode );

    MHAL_CEC_MSG_INFO("\r\n/********  CEC Tx **********/\r\n");
    MHAL_CEC_MSG_INFO("CEC Tx FIFO= 0x%x", (MS_U8)header);
    MHAL_CEC_MSG_INFO(" 0x%x", (MS_U8)opcode);

    if(len > 0)
    {
        ptr=operand;
        for(i=0;i<len;i++)
        {
            PM_REG_WRITE( L_BK_CEC(0x19)+i , *(ptr+i) );
            MHAL_CEC_MSG_INFO(" 0x%x", *(operand+i));
        }
        MHAL_CEC_MSG_INFO("\r\n/**************************/\r\n");
    }

    if((PM_REG_READ(L_BK_CEC(0x05))== 1) && (PM_REG_READ(H_BK_CEC(0x05))== 0)) // CEC idle
    {
        MHAL_CEC_MSG_INFO("*** CEC idle!!! ***\n");

        // CEC transmit length
        //if((opcode==0x00)&&(operand==NULL)&&(len==0))
        if((opcode==0x00)&&(len==0))
        {
            PM_REG_WRITE(L_BK_CEC(0x00), 0);                   //polling message
            u8waitcnt = 5;
        }
        else
        {
            PM_REG_WRITE(L_BK_CEC(0x00), (len+1));
            u8waitcnt = 4 * (len+2);
        }

    //The total time,
    //(1). successful, 4.5 ms + 10 * 2.4 ms * N = 4.5 ms + 24 * N
    //              = 28.5 ms (1), or 52.5 ms (2), ....
    //(2). NAK,        (4.5 ms + 10 * 2.4 ms) * 1 + (4.5 ms + 10 * 2.4 ms +7.2 ms(3 bit time)) * retry (3)
    //              = 28.5 + 35.2 * 3 = 133.6 ms

        cnt=0;
        MsOS_DelayTask(20);

        do
        {
            MsOS_DelayTask(10);
            if(cnt++>=u8waitcnt)
                break;
        } while((PM_REG_READ(H_BK_CEC(0x11))&0x0E)==0);
        res = (PM_REG_READ(H_BK_CEC(0x11))&0x0E);

        if(cnt>=u8waitcnt)
            res |= E_CEC_SYSTEM_BUSY;

         // clear CEC TX INT status
        PM_REG_WRITE(H_BK_CEC(0x12), 0x0E);
        PM_REG_WRITE(H_BK_CEC(0x12), 0x00);
    }
    else
    {
        MHAL_CEC_MSG_INFO("*** system busy!!! ***\n");

        res = E_CEC_SYSTEM_BUSY;
    }

    return res;
}

MS_U8 mhal_CEC_SendFramex(MS_U8 header, MS_U8 opcode, MS_U8* operand, MS_U8 len)
{
    MS_U8 i, cnt, *ptr, res;
    MS_U8 u8waitcnt;
    volatile MS_U16 k, m;
     // clear CEC TX INT status
    PM_REG_WRITE(H_BK_CEC(0x12), 0x0E);
    PM_REG_WRITE(H_BK_CEC(0x12), 0x00);
    PM_REG_WRITE( L_BK_CEC(0x18), header );
    PM_REG_WRITE( H_BK_CEC(0x18), opcode );

    MHAL_CEC_MSG_INFO("\r\n/********  CEC Tx **********/\r\n");
    MHAL_CEC_MSG_INFO("CEC Tx FIFO= 0x%x", (MS_U8)header);
    MHAL_CEC_MSG_INFO(" 0x%x", (MS_U8)opcode);

    if(len > 0)
    {
        ptr=operand;
        for(i=0;i<len;i++)
        {
            PM_REG_WRITE( L_BK_CEC(0x19)+i , *(ptr+i) );
            MHAL_CEC_MSG_INFO(" 0x%x", *(operand+i));
        }
        MHAL_CEC_MSG_INFO("\r\n/**************************/\r\n");
    }

    if((PM_REG_READ(L_BK_CEC(0x05))== 1) && (PM_REG_READ(H_BK_CEC(0x05))== 0)) // CEC idle
    {
        MHAL_CEC_MSG_INFO("*** CEC idle!!! ***\n");

        // CEC transmit length
        //if((opcode==0x00)&&(operand==NULL)&&(len==0))
        if((opcode==0x00)&&(len==0))
        {
            PM_REG_WRITE(L_BK_CEC(0x00), 0);                   //polling message
            u8waitcnt = 5;
        }
        else
        {
            PM_REG_WRITE(L_BK_CEC(0x00), (len+1));
            u8waitcnt = 30;
        }

    //The total time,
    //(1). successful, 4.5 ms + 10 * 2.4 ms * N = 4.5 ms + 24 * N
    //              = 28.5 ms (1), or 52.5 ms (2), ....
    //(2). NAK,        (4.5 ms + 10 * 2.4 ms) * 1 + (4.5 ms + 10 * 2.4 ms +7.2 ms(3 bit time)) * retry (3)
    //              = 28.5 + 35.2 * 3 = 133.6 ms


        cnt=0;
        //MsOS_DelayTask(20);
        for(k = 0; k< 20000; k++)
        {
            _NOP_
            _NOP_
            _NOP_
        }


        do
        {
            //MsOS_DelayTask(10);
            for(k = 0; k< 20000; k++)
            {
                for(m=0;m<50;m++)
                {
                    _NOP_
                    _NOP_
                    _NOP_
                    _NOP_
                    _NOP_
                }
            }
            if(cnt++>=u8waitcnt)
                break;
        } while((PM_REG_READ(H_BK_CEC(0x11))&0x0E)==0);

        res = (PM_REG_READ(H_BK_CEC(0x11))&0x0E);

        if(cnt>=u8waitcnt)
            res |= E_CEC_SYSTEM_BUSY;

         // clear CEC TX INT status
        PM_REG_WRITE(H_BK_CEC(0x12), 0x0E);
        PM_REG_WRITE(H_BK_CEC(0x12), 0x00);
    }
    else
    {
        MHAL_CEC_MSG_INFO("*** system busy!!! ***\n");

        res = E_CEC_SYSTEM_BUSY;
    }

    return res;
}


void mhal_CEC_SetMyAddress(MS_U8 mylogicaladdress)
{
    PM_REG_WRITE(L_BK_CEC(0x02), (PM_REG_READ(L_BK_CEC(0x02)) & 0x0F) |(mylogicaladdress<<4));
}

void mhal_CEC_INTEn(MS_BOOL bflag)
{
    if(bflag) // unmask
        PM_REG_WRITE(L_BK_CEC(0x13), 0x1E);  //REG_HDMI_INT_MASK

    else // Mask CEC interrupt
#if ENABLE_CEC_MULTIPLE
        PM_REG_WRITE(L_BK_CEC(0x13), 0x7F);  //REG_HDMI_INT_MASK
#else
        PM_REG_WRITE(L_BK_CEC(0x13), 0x1F);  //REG_HDMI_INT_MASK
#endif

}


void mhal_CEC_Init(MS_U32 u32XTAL_CLK_Hz, MsCEC_DEVICELA DeviceLA, MS_U8 ucRetryCnt)
{
    MS_U16 reg_val0, reg_val1;

#if ENABLE_CEC_INT

    // CEC irq clear
    PM_REG_WRITE(H_BK_CEC(0x12), 0x1F);
    PM_REG_WRITE(H_BK_CEC(0x12), 0x00);
    // CEC irq mask control -only enable CEC rx irq
    PM_REG_WRITE(L_BK_CEC(0x13), 0x1E);
    // CEC interrupt mask for PM/normal function
    PM_REG_WRITE(L_BK_CEC(0x30), 0x08); // 11_30[3] = 1 Interrupt clear type select (Level), clear by itself

#endif

    PM_REG_WRITE(L_BK_CEC(0x14),0x01); // [1]: clock source from Xtal;[0]: Power down CEC controller select
    PM_REG_WRITE(H_BK_CEC(0x03),PM_REG_READ(H_BK_CEC(0x03))&(~ BIT(4))); // [4]: Standby mode;
    PM_REG_WRITE(H_BK_CEC(0x00),0x10|ucRetryCnt); // retry times
    PM_REG_WRITE(L_BK_CEC(0x01),0x80); // [5]:CEC clock no gate; [7]: Enable CEC controller
    PM_REG_WRITE(H_BK_CEC(0x01),(BusFreeTime<<4)|(ReTxInterval)); // CNT1=ReTxInterval; CNT2=BusFreeTime;
    PM_REG_WRITE(L_BK_CEC(0x02),(DeviceLA<<4)|(FrameInterval)); // CNT3=FrameInterval; [7:4]=logical address: TV
#if ENABLE_CEC_MULTIPLE
    PM_REG_WRITE(L_BK_CEC(0x30),PM_REG_READ(L_BK_CEC(0x30))|BIT(0)); // enable CEC multiple function
#endif
    //reg_val0=(u32XTAL_CLK_Hz%100000l)*0.00016+0.5;
    reg_val0=((u32XTAL_CLK_Hz%100000UL)*160+500000UL)/1000000UL;

    PM_REG_WRITE(H_BK_CEC(0x02),(u32XTAL_CLK_Hz/100000UL)); // CEC time unit by Xtal(integer)
    reg_val1 = PM_REG_READ(L_BK_CEC(0x03));
    PM_REG_WRITE(L_BK_CEC(0x03), ((reg_val1 & 0xF0) | reg_val0)); // CEC time unit by Xtal(fractional)

    PM_REG_WRITE(L_BK_CEC(0x11), 0xFF); // clear CEC status


}

MS_BOOL mhal_CEC_IsMessageReceived(void)
{
    return (PM_REG_READ(H_BK_CEC(0x11))& 0x01 ? TRUE : FALSE);
}

MS_U8 mhal_CEC_ReceivedMessageLen(void)
{
    return ((PM_REG_READ(L_BK_CEC(0x04)) & 0x1F) + 1);
}

MS_U8 mhal_CEC_GetMessageByte(MS_U8 idx)
{
    return (PM_REG_READ(L_BK_CEC(0x20) + idx));
}

void mhal_CEC_ClearRxStatus(void)
{
    // clear RX INT status
    PM_REG_WRITE(H_BK_CEC(0x12), 0x11);
    PM_REG_WRITE(H_BK_CEC(0x12), 0x00);
    // clear RX NACK status
    PM_REG_WRITE(L_BK_CEC(0x11), 0xFF);
}

/***************************************************************************************/
/// config cec wake up
/***************************************************************************************/

void mhal_CEC_ConfigWakeUp(MS_U8 ucRetryCount, MS_U8* ucVendorID, MS_U32 u32XTAL_CLK_Hz, MS_U8* ucPA, MsCEC_DEVICE_TYPE eType, MS_BOOL bIsSrc)
{
    MS_U16 reg_val0, reg_val1;
    MHAL_CEC_MSG_INFO("\r\n Here do the PM config cec wakeup \r\n");

    //XBYTE[0x250C] &= ~BIT0;
    MDrv_WriteByte( REG_COMBO_PHY0_P0_0C_H, MDrv_ReadByte(REG_COMBO_PHY0_P0_0C_H) &(~ BIT(4)));


    //(1) enable chiptop clk_mcu & clk_pram
  #if 0
    XBYTE[0x0E00] = 0x03;
    //enable PM_Sleep's clk_mcu and _pram
    Drv_WriteByte(L_BK_PMSLP(0x00), 0x03);
    XBYTE[0x0E01] = 0x0F;
    //0x0C; Ken 20080916 for calibration to 1Mz
    MDrv_WriteByte(H_BK_PMSLP(0x00), 0x0F);
  #endif


    //(2) HDMI CEC settings
    PM_REG_WRITE(H_BK_CEC(0x00),0x10|ucRetryCount); // retry times
    PM_REG_WRITE(L_BK_CEC(0x01),0x80); // [5]:CEC clock no gate; [7]: Enable CEC controller
    PM_REG_WRITE(H_BK_CEC(0x01),(BusFreeTime<<4)|(ReTxInterval)); // CNT1=ReTxInterval; CNT2=BusFreeTime;
    //PM_REG_WRITE(L_BK_CEC(0x02),0x07); // CNT3=7; logical address: TV

    //reg_val0=(MST_XTAL_CLOCK_HZ%100000l)*0.00016+0.5;
    reg_val0=((u32XTAL_CLK_Hz%100000UL)*160+500000UL)/1000000UL;

    PM_REG_WRITE(H_BK_CEC(0x02),(u32XTAL_CLK_Hz/100000l)); // CEC time unit by Xtal(integer)

    reg_val1 = PM_REG_READ(L_BK_CEC(0x03));
    PM_REG_WRITE(L_BK_CEC(0x03), ((reg_val1 & 0xF0) | reg_val0)); // CEC time unit by Xtal(fractional)


    //(3) PM Sleep: wakeup enable sources
    //PM_REG_WRITE(L_BK_PMMCU(0x00),0x01); // reg_cec_enw


    //(4) PM CEC power down controller settings
    // Mask CEC interrupt in standby mode
    PM_REG_WRITE(L_BK_CEC(0x13),0xFF);
    // select power down SW CEC controller
    PM_REG_WRITE(L_BK_CEC(0x14),0x01); // [1]: clock source from Xtal;[0]: Power down CEC controller select
    PM_REG_WRITE(L_BK_CEC(0x01),0x00); // [5]:CEC clock no gate; [7]: Disable CEC controller
    PM_REG_WRITE(L_BK_CEC(0x01),0x80); // [5]:CEC clock no gate; [7]: Enable CEC controller
#if 0//ENABLE_SW_CEC_WAKEUP
    PM_REG_WRITE(H_BK_CEC(0x03),PM_REG_READ(H_BK_CEC(0x03))&(~ BIT(4))); // [4]: Standby mode;
#else
    PM_REG_WRITE(H_BK_CEC(0x03),PM_REG_READ(H_BK_CEC(0x03))|(BIT(4))); // [4]: sleep mode;
#endif

    if(bIsSrc) // STB
    {
        //(5) PM CEC wakeup opcode settings
        // OPCODE0: N/A
        // OPCODE1: N/A
        // OPCODE2: 0x44 0x40(Power)
        //          0x44 0x6D(Power ON Function)
        // OPCODE3: N/A
        // OPCODE4: 0x86(Set stream path)
        PM_REG_WRITE(L_BK_CEC(0x07), 0x34); // Enable OP2 and OP4
        PM_REG_WRITE(H_BK_CEC(0x07), 0x24); // Eanble OPCODE2's operand

        PM_REG_WRITE(L_BK_CEC(0x09), E_MSG_UI_PRESS);           // OPCODE2: User Control Pressed
        PM_REG_WRITE(H_BK_CEC(0x0B), E_MSG_UI_POWER);           // OPCODE2 operand: Power
        PM_REG_WRITE(L_BK_CEC(0x0C), E_MSG_UI_POWER_ON_FUN);    // OPCODE2 operand: Power ON Function

        PM_REG_WRITE(L_BK_CEC(0x0A), E_MSG_RC_SET_STREM_PATH);  // OPCODE4: Set stream path

        // [2:0]: CEC version 1.4; [7]: OP4 is broadcast message
        PM_REG_WRITE(H_BK_CEC(0x0D), 0x80 | HDMI_CEC_VERSION);


        //(6) Device(TV) Vendor ID for customer (Big Endian)
        // It depends end-customer's vendor ID
        MHAL_CEC_MSG_INFO("!!!!!!!!!!!!!!!!!!!Change this Vendor ID according to customer!!!!!!!!!!!!!!!!\n");
        PM_REG_WRITE(L_BK_CEC(0x0F), ucVendorID[0]); // Device Vendor ID
        PM_REG_WRITE(H_BK_CEC(0x0F), ucVendorID[1]); // Device Vendor ID
        PM_REG_WRITE(L_BK_CEC(0x10), ucVendorID[2]); // Device Vendor ID

        // ignore messages sent from initiator LA = 0xF when sleep mode
        // [10:8]: Feature abort reason - "Not in correct mode to respond"
        PM_REG_WRITE(H_BK_CEC(0x10), BIT(7)|(0xF<<3)|E_MSG_AR_CANNOTRESPOND ); // pm_CEC_10[14:11]: reg_ignor_addr_sw; [15]: reg_ignor_enb_sw


        //(7) Device Physical address: default is 0x00 0x00 0x00
        PM_REG_WRITE(L_BK_CEC(0x0E), ucPA[0]); // Physical address
        PM_REG_WRITE(H_BK_CEC(0x0E), ucPA[1]); // Physical address
        PM_REG_WRITE(H_BK_CEC(0x14), eType & 0xFF); // Device type
    }
    else // TV
    {
        PM_REG_WRITE(L_BK_CEC(0x02),0x07); // CNT3=7; logical address: TV

        //(5) PM CEC wakeup opcode settings
        // OPCODE0: 0x04(Image view on)
        // OPCODE1: 0x0D(Text view on)
        // OPCODE2: 0x44 0x40(Power)
        //          0x44 0x6D(Power ON Function)
        // OPCODE3: N/A
        // OPCODE4: 0x82(Active source) length = 2 (HDMI2.0 removed)
        PM_REG_WRITE(L_BK_CEC(0x07), 0x27); // pm_CEC_07[4:0]: Enable OP0~2, disable OP3~4; [5]: OP2 second operand enable
        PM_REG_WRITE(H_BK_CEC(0x07), 0x04); // pm_CEC_07[11:8]: Eanble OP2 operand; [15:12]: disable OP4 length

        PM_REG_WRITE(L_BK_CEC(0x08), E_MSG_OTP_IMAGE_VIEW_ON);  // OPCODE0: Image View On
        PM_REG_WRITE(H_BK_CEC(0x08), E_MSG_OTP_TEXT_VIEW_ON);   // OPCODE1: Text View ON

        PM_REG_WRITE(L_BK_CEC(0x09), E_MSG_UI_PRESS);           // OPCODE2: User Control Pressed
        PM_REG_WRITE(H_BK_CEC(0x0B), E_MSG_UI_POWER);           // OPCODE2 operand: Power
        PM_REG_WRITE(L_BK_CEC(0x0C), E_MSG_UI_POWER_ON_FUN);    // OPCODE2 operand: Power ON Function

        //PM_REG_WRITE(L_BK_CEC(0x0A), E_MSG_ACTIVE_SOURCE);      // OPCODE4: Active source (HDMI2.0 removed)

        // [2:0]: CEC version 1.4; [7]: OP4 is broadcast message
        PM_REG_WRITE(H_BK_CEC(0x0D), 0x80 | HDMI_CEC_VERSION);


        //(6) Device(TV) Vendor ID for customer (Big Endian)
        // It depends end-customer's vendor ID
        MHAL_CEC_MSG_INFO("!!!!!!!!!!!!!!!!!!!Change this Vendor ID according to customer!!!!!!!!!!!!!!!!\n");
        PM_REG_WRITE(L_BK_CEC(0x0F), ucVendorID[0]); // Device Vendor ID
        PM_REG_WRITE(H_BK_CEC(0x0F), ucVendorID[1]); // Device Vendor ID
        PM_REG_WRITE(L_BK_CEC(0x10), ucVendorID[2]); // Device Vendor ID

        // ignore messages sent from initiator LA = 0xF when sleep mode
        // [10:8]: Feature abort reason - "Not in correct mode to respond"
        PM_REG_WRITE(H_BK_CEC(0x10), BIT(7)|(0xF<<3)|E_MSG_AR_CANNOTRESPOND ); // pm_CEC_10[14:11]: reg_ignor_addr_sw; [15]: reg_ignor_enb_sw


        //(7) Device Physical address: default is 0x00 0x00 0x00
        PM_REG_WRITE(L_BK_CEC(0x0E), 0x00); // Physical address 0.0
        PM_REG_WRITE(H_BK_CEC(0x0E), 0x00); // Physical address 0.0
        PM_REG_WRITE(H_BK_CEC(0x14), 0x00); // Device type: TV
    }


    //(8) Clear CEC status
    PM_REG_WRITE(L_BK_CEC(0x11), 0xFF); // Clear CEC wakeup status
    PM_REG_WRITE(H_BK_CEC(0x12), 0x1F); // Clear RX/TX/RF/LA/NACK status status
    PM_REG_WRITE(H_BK_CEC(0x12), 0x00);
}

void mhal_CEC_Enabled(MS_BOOL bEnableFlag)
{
    if(bEnableFlag)
        PM_REG_WRITE(L_BK_CEC(0x01),0x80); //Enable PM CEC controller
    else
        PM_REG_WRITE(L_BK_CEC(0x01),0x00); //Disable PM CEC controller
}

MS_U8 mhal_CEC_TxStatus(void)
{
    return (PM_REG_READ(H_BK_CEC(0x11))&0x0E);
}

MS_BOOL mhal_CEC_Device_Is_Tx(void)
{
    return CEC_DEVICE_IS_SOURCE;
}
void mhal_CEC_SetRetryCount(MS_U8 ucRetryCount)
{
    PM_REG_WRITE(H_BK_CEC(0x00),ucRetryCount|(PM_REG_READ(H_BK_CEC(0x00))& 0xF8)); // retry times
}

#if ENABLE_CEC_MULTIPLE
void mhal_CEC_SetMyAddress2(MS_U8 mylogicaladdress)
{
    PM_REG_WRITE(H_BK_CEC(0x30), (PM_REG_READ(H_BK_CEC(0x30)) & 0xF0) |(mylogicaladdress));
}

MS_BOOL mhal_CEC_IsMessageReceived2(void)
{
    return (PM_REG_READ(H_BK_CEC(0x11))& 0x20 ? TRUE : FALSE);
}

MS_U8 mhal_CEC_ReceivedMessageLen2(void)
{
    return ((PM_REG_READ(L_BK_CEC(0x31)) & 0x1F) + 1);
}

MS_U8 mhal_CEC_GetMessageByte2(MS_U8 idx)
{
    return (PM_REG_READ(L_BK_CEC(0x28) + idx));
}

void mhal_CEC_ClearRxStatus2(void)
{
    // clear RX INT status
    PM_REG_WRITE(H_BK_CEC(0x12), 0x60);
    PM_REG_WRITE(H_BK_CEC(0x12), 0x00);
    // clear RX NACK status
    PM_REG_WRITE(L_BK_CEC(0x11), 0xFF);
}
#endif