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/*******************************************************************************
    @file   gpio.c
    @brief  Contains all functions support for gpio and iomux driver
    @version  0.0
    @date   19. Oct. 2017
    @author qing.han



*******************************************************************************/
#include "types.h"
#include "string.h"
#include "mcu.h"
#include "clock.h"
#include "gpio.h"
#include "pwrmgr.h"
#include "error.h"
#include "jump_function.h"
#include "log.h"
#include "global_config.h"


extern uint32_t s_gpio_wakeup_src_group1,s_gpio_wakeup_src_group2;


enum
{
    GPIO_PIN_ASSI_NONE = 0,
    GPIO_PIN_ASSI_OUT,
    GPIO_PIN_ASSI_IN,
};

typedef struct
{
    bool          enable;
    uint8_t       pin_state;
    gpioin_Hdl_t  posedgeHdl;
    gpioin_Hdl_t  negedgeHdl;

} gpioin_Ctx_t;

typedef struct
{
    bool          state;
    uint8_t       pin_assignments[NUMBER_OF_PINS];
    uint32_t      pin_retention_status;
    gpioin_Ctx_t  irq_ctx[NUMBER_OF_PINS];

} gpio_Ctx_t;

typedef struct
{
    uint8_t    reg_i;
    uint8_t    bit_h;
    uint8_t    bit_l;

} PULL_TypeDef;

static gpio_Ctx_t m_gpioCtx =
{
    .state = FALSE,
    .pin_assignments = {0,},
    .pin_retention_status = 0
};

const uint8_t c_gpio_index[GPIO_NUM] = {0,1,2,3,7,9,10,11,14,15,16,17,18,20,23,24,25,26,27,31,32,33,34};

const PULL_TypeDef c_gpio_pull[GPIO_NUM]=
{
    {0,2,1},  //p0
    {0,5,4},  //p1
    {0,8,7},  //p2
    {0,11,10},//p3
    {0,23,22},//p7
    {0,29,28},//p9
    {1,2,1},  //p10
    {1,5,4},  //p11
    {1,14,13},//p14
    {1,17,16},//p15
    {1,20,19},//p16
    {1,23,22},//p17
    {1,26,25},//p18
    {2,2,1},  //p20
    {2,11,10},//p23
    {2,14,13},//p24
    {2,17,16},//p25
    {2,20,19},//p26
    {2,23,22},//p27
    {3,5,4},  //p31
    {3,8,7},  //p32
    {3,11,10},//p33
    {3,14,13},//p34
};

const signed char retention_reg[GPIO_NUM][2]=
{
    {0,13},//p0
    {0,14},//p1
    {0,16},//p2
    {0,17},//p3
    {0,19},//p7
    {0,20},//p9
    {1,7},//p10
    {1,8},//p11
    {1,10},//p14
    {1,11},//p15
    {1,28},//p16
    {1,29},//p17
    {2,4},//p18
    {2,5},//p20
    {2,7},//p23
    {2,8},//p24
    {2,25},//p25
    {2,26},//p26
    {2,28},//p27
    {2,29},//p31
    {3,1},//p32
    {3,2},//p33
    {3,23},//p34
};

static int hal_gpio_interrupt_disable(gpio_pin_e pin)
{
    subWriteReg(&(AP_GPIO->intmask),pin,pin,1);
    subWriteReg(&(AP_GPIO->inten),pin,pin,0);
    return PPlus_SUCCESS;
}

void hal_gpio_write(gpio_pin_e pin, uint8_t en)
{
//    hal_gpio_pin_init(pin,GPIO_OUTPUT);
    if (pin > (NUMBER_OF_PINS - 1))
        return;

    if(en)
        AP_GPIO->swporta_dr |= BIT(pin);
    else
        AP_GPIO->swporta_dr &= ~BIT(pin);

    hal_gpio_pin_init(pin,GPIO_OUTPUT);
}

void hal_gpio_fast_write(gpio_pin_e pin, uint8_t en)
{
    if (pin > (NUMBER_OF_PINS - 1))
        return;

    if(en)
        AP_GPIO->swporta_dr |= BIT(pin);
    else
        AP_GPIO->swporta_dr &= ~BIT(pin);
}

bool hal_gpio_read(gpio_pin_e pin)
{
    uint32_t r;

    if (pin > (NUMBER_OF_PINS - 1))
        return PPlus_ERR_NOT_SUPPORTED;

    if(AP_GPIO->swporta_ddr & BIT(pin))
        r = AP_GPIO->swporta_dr;
    else
        r = AP_GPIO->ext_porta;

    return (int)((r>> pin) &1);
}

void hal_gpio_fmux(gpio_pin_e pin, bit_action_e value)
{
    if (pin > (NUMBER_OF_PINS - 1))
        return;

    if(value)
    {
//        if((pin == P2) || (pin == P3))
//            hal_gpio_pin2pin3_control(pin,1);
        AP_IOMUX->full_mux0_en |= BIT(pin);
    }
    else
        AP_IOMUX->full_mux0_en &= ~BIT(pin);
}

void hal_gpio_fmux_set(gpio_pin_e pin,gpio_fmux_e type)
{
    uint8_t h = 0,l = 0;
    uint32_t reg_index;
    uint32_t bit_index;

    if(pin != GPIO_DUMMY)
    {
        reg_index = pin >> 2;
        bit_index = pin & 0x03;
        l = 8 * bit_index;
        h = l + 5;
        hal_gpioin_disable(pin);
        subWriteReg(&(AP_IOMUX->gpio_sel[reg_index]),h,l,type);
        hal_gpio_fmux(pin, Bit_ENABLE);
    }
}

int hal_gpio_pin_init(gpio_pin_e pin,gpio_dir_t type)
{
    if (pin > (NUMBER_OF_PINS - 1))
        return PPlus_ERR_NOT_SUPPORTED;

    if((m_gpioCtx.pin_assignments[pin] == GPIO_PIN_ASSI_OUT) &&
            (m_gpioCtx.pin_retention_status & BIT(pin)) && (type == GPIO_INPUT))
        return PPlus_ERR_INVALID_PARAM;

    hal_gpio_fmux(pin,Bit_DISABLE);

    if((pin == P2) || (pin == P3))
        hal_gpio_pin2pin3_control(pin,1);

    hal_gpio_cfg_analog_io(pin,Bit_DISABLE);

    if(type == GPIO_OUTPUT)
    {
        AP_GPIO->swporta_ddr |= BIT(pin);
        m_gpioCtx.pin_assignments[pin] = GPIO_PIN_ASSI_OUT;
    }
    else
    {
        AP_GPIO->swporta_ddr &= ~BIT(pin);
        m_gpioCtx.pin_assignments[pin] = GPIO_PIN_ASSI_IN;
    }

    return PPlus_SUCCESS;
}

static void hal_gpio_wakeup_control(gpio_pin_e pin, bit_action_e value)
{
    if(pin < P32)
    {
        if (value)
            AP_AON->REG_S9 |= BIT(c_gpio_index[pin]);
        else
            AP_AON->REG_S9 &= ~BIT(c_gpio_index[pin]);
    }
    else
    {
        if (value)
            AP_AON->REG_S10 |= BIT(c_gpio_index[pin] - 32);
        else
            AP_AON->REG_S10 &= ~BIT(c_gpio_index[pin] - 32);
    }
}

void hal_gpio_ds_control(gpio_pin_e pin, bit_action_e value)
{
    if (pin > (NUMBER_OF_PINS - 1))
        return;

    if(value)
        AP_IOMUX->pad_ps0 |= BIT(pin);
    else
        AP_IOMUX->pad_ps0 &= ~BIT(pin);
}

int hal_gpioretention_unregister(gpio_pin_e pin)
{
    if (pin > (NUMBER_OF_PINS - 1))
        return PPlus_ERR_NOT_SUPPORTED;

    if(m_gpioCtx.pin_assignments[pin] != GPIO_PIN_ASSI_OUT)
        return PPlus_ERR_INVALID_PARAM;

    m_gpioCtx.pin_retention_status &= ~BIT(pin);
    return PPlus_SUCCESS;
}


int hal_gpioin_unregister(gpio_pin_e pin)
{
    gpioin_Ctx_t* p_irq_ctx = &(m_gpioCtx.irq_ctx[0]);

    if (pin > (NUMBER_OF_PINS - 1))
        return PPlus_ERR_NOT_SUPPORTED;

    hal_gpioin_disable(pin);
    p_irq_ctx[pin].negedgeHdl = NULL;
    p_irq_ctx[pin].posedgeHdl = NULL;
    return PPlus_SUCCESS;
}

int hal_gpio_cfg_analog_io(gpio_pin_e pin, bit_action_e value)
{
    if((pin < P11) || (pin > P25))
        return PPlus_ERR_INVALID_PARAM;

    if (pin > (NUMBER_OF_PINS - 1))
        return PPlus_ERR_NOT_SUPPORTED;

    if(value)
    {
        hal_gpio_pull_set(pin,GPIO_FLOATING);
        AP_IOMUX->Analog_IO_en |= BIT(pin - P11);
    }
    else
    {
        AP_IOMUX->Analog_IO_en &= ~BIT(pin - P11);
    }

    return PPlus_SUCCESS;
}


void hal_gpio_pull_set(gpio_pin_e pin, gpio_pupd_e type)
{
    if (pin > (NUMBER_OF_PINS - 1))
        return;

    uint8_t i = c_gpio_pull[pin].reg_i;
    uint8_t h = c_gpio_pull[pin].bit_h;
    uint8_t l = c_gpio_pull[pin].bit_l;

    if(pin < P31)
        subWriteReg(&(AP_AON->IOCTL[i]),h,l,type);
    else
        subWriteReg(&(AP_AON->PMCTL0),h,l,type);
}

void hal_gpio_wakeup_set(gpio_pin_e pin, gpio_polarity_e type)
{
    if (pin > (NUMBER_OF_PINS - 1))
        return;

    uint8_t i = c_gpio_pull[pin].reg_i;
    uint8_t p = c_gpio_pull[pin].bit_l-1;

    if (m_gpioCtx.pin_assignments[pin] != GPIO_PIN_ASSI_IN)
        return;

    AP_GPIO->inttype_level |= BIT(pin);//edge sensitive

    if(pin < P31)
    {
        if(POL_FALLING == type)
            AP_AON->IOCTL[i] |= BIT(p);
        else
            AP_AON->IOCTL[i] &= ~BIT(p);
    }
    else
    {
        if(POL_FALLING == type)
            AP_AON->PMCTL0 |= BIT(p);
        else
            AP_AON->PMCTL0 &= ~BIT(p);
    }

    hal_gpio_wakeup_control(pin,Bit_ENABLE);//enable wakeup function
}

void hal_gpio_pin2pin3_control(gpio_pin_e pin, uint8_t en)//0:sw,1:other func
{
    if(en)
        AP_IOMUX->gpio_pad_en |= BIT(pin-2);
    else
        AP_IOMUX->gpio_pad_en &= ~BIT(pin-2);
}

#if(CFG_SLEEP_MODE == PWR_MODE_SLEEP)
static void hal_gpio_retention_enable(gpio_pin_e pin,uint8_t en)
{
    if (pin > (NUMBER_OF_PINS - 1))
        return;

    if(en)
    {
        if((pin == P32)||(pin == P33)||(pin == P34))
        {
            AP_AON->PMCTL0 |= BIT(retention_reg[pin][1]);
        }
        else
        {
            AP_AON->IOCTL[retention_reg[pin][0]] |= BIT(retention_reg[pin][1]);
        }
    }
    else
    {
        if((pin == P32)||(pin == P33)||(pin == P34))
        {
            AP_AON->PMCTL0 &= ~BIT(retention_reg[pin][1]);
        }
        else
        {
            AP_AON->IOCTL[retention_reg[pin][0]] &= ~BIT(retention_reg[pin][1]);
        }
    }
}
#endif

int hal_gpioin_disable(gpio_pin_e pin)
{
    gpioin_Ctx_t* p_irq_ctx = &(m_gpioCtx.irq_ctx[0]);

    if (pin > (NUMBER_OF_PINS - 1))
        return PPlus_ERR_NOT_SUPPORTED;

    p_irq_ctx[pin].enable = FALSE;
    m_gpioCtx.pin_assignments[pin] = GPIO_PIN_ASSI_NONE;
    hal_gpio_pin_init(pin, GPIO_INPUT);
    return hal_gpio_interrupt_disable(pin);
}

static int hal_gpio_interrupt_enable(gpio_pin_e pin, gpio_polarity_e type)
{
    uint32_t gpio_tmp;

    if (pin > (NUMBER_OF_PINS - 1))
        return PPlus_ERR_NOT_SUPPORTED;

    gpio_tmp = AP_GPIO->inttype_level;
    gpio_tmp |= (1 << pin); //edge sensitive
    AP_GPIO->inttype_level = gpio_tmp;
    gpio_tmp = AP_GPIO->intmask;
    gpio_tmp &= ~(1 << pin); //unmask interrupt
    AP_GPIO->intmask = gpio_tmp;
    gpio_tmp = AP_GPIO->int_polarity;

    if (type == POL_RISING )
        gpio_tmp |= (1 << pin);
    else
        gpio_tmp &= ~(1 << pin);

    AP_GPIO->int_polarity = gpio_tmp;
    gpio_tmp = AP_GPIO->inten;
    gpio_tmp |= (1 << pin); //enable interrupt
    AP_GPIO->inten = gpio_tmp;
    return PPlus_SUCCESS;
}

static void hal_gpioin_event_pin(gpio_pin_e pin, gpio_polarity_e type)
{
    gpioin_Ctx_t* p_irq_ctx = &(m_gpioCtx.irq_ctx[0]);

    if (pin > (NUMBER_OF_PINS - 1))
        return;

    if (p_irq_ctx[pin].posedgeHdl && (type == POL_RISING ))
    {
        p_irq_ctx[pin].posedgeHdl(pin,POL_RISING );//LOG("POS\n");
    }
    else if (p_irq_ctx[pin].negedgeHdl && (type == POL_FALLING))
    {
        p_irq_ctx[pin].negedgeHdl(pin,POL_FALLING);//LOG("NEG\n");
    }
}

#if(CFG_SLEEP_MODE == PWR_MODE_SLEEP)
static void hal_gpioin_wakeup_trigger(gpio_pin_e pin)
{
    if (pin > (NUMBER_OF_PINS - 1))
        return;

    uint8_t pin_state = (uint8_t)hal_gpio_read(pin);
    gpio_polarity_e type = pin_state ? POL_RISING  : POL_FALLING;

    if (m_gpioCtx.irq_ctx[pin].pin_state != pin_state)
        hal_gpioin_event_pin(pin, type);
}
#endif

static void hal_gpioin_event(uint32 int_status, uint32 polarity)
{
    int i;
    gpioin_Ctx_t* p_irq_ctx = &(m_gpioCtx.irq_ctx[0]);
//    LOG("GI:%x,%x\n",int_status,polarity);

    for (i = 0; i < NUMBER_OF_PINS; i++)
    {
        if (int_status & (1ul << i))
        {
            gpio_polarity_e type = (polarity & BIT(i)) ? POL_RISING  : POL_FALLING;
            hal_gpioin_event_pin((gpio_pin_e)i, type);

            //reconfig interrupt
            if (p_irq_ctx[i].posedgeHdl && p_irq_ctx[i].negedgeHdl) //both raise and fall
            {
                type = (type == POL_RISING) ? POL_FALLING : POL_RISING ;
                hal_gpio_interrupt_enable((gpio_pin_e)i, type);
            }
            else if (p_irq_ctx[i].posedgeHdl) //raise
            {
                hal_gpio_interrupt_enable((gpio_pin_e)i, POL_RISING );
            }
            else if (p_irq_ctx[i].negedgeHdl) //fall
            {
                hal_gpio_interrupt_enable((gpio_pin_e)i, POL_FALLING);
            }
        }
    }
}
#if(CFG_SLEEP_MODE == PWR_MODE_SLEEP)
static void hal_gpio_sleep_handler(void)
{
    int i;
    gpio_polarity_e pol;

    for (i = 0; i < NUMBER_OF_PINS; i++)
    {
        //config wakeup
        if ((m_gpioCtx.pin_assignments[i] == GPIO_PIN_ASSI_OUT) && (m_gpioCtx.pin_retention_status & BIT(i)))
        {
            hal_gpio_retention_enable((gpio_pin_e)i,Bit_ENABLE);
        }

        if (m_gpioCtx.pin_assignments[i] == GPIO_PIN_ASSI_IN)
        {
            #ifdef XOSC_PIN_ALLOW

            if((i==P16)||(i==P17))
            {
                hal_gpio_cfg_analog_io((gpio_pin_e)i,Bit_DISABLE);
                subWriteReg(&(AP_AON->PMCTL2_0),6,6,0x01);
                WaitUs(50);
                pol = hal_gpio_read((gpio_pin_e)i) ? POL_FALLING : POL_RISING ;
                subWriteReg(&(AP_AON->PMCTL2_0),6,6,0x00);
            }
            else
            #endif
            {
                pol = hal_gpio_read((gpio_pin_e)i) ? POL_FALLING : POL_RISING ;
            }

            hal_gpio_wakeup_set((gpio_pin_e)i, pol);
            m_gpioCtx.irq_ctx[i].pin_state = hal_gpio_read((gpio_pin_e)i);
        }
    }
}

static void hal_gpio_wakeup_handler(void)
{
    int i;
    NVIC_SetPriority(GPIO_IRQn, IRQ_PRIO_HAL);
    NVIC_EnableIRQ(GPIO_IRQn);
    #ifdef XOSC_PIN_ALLOW

    if (pGlobal_config[LL_SWITCH] & LL_RC32K_SEL)
    {
        subWriteReg(0x4000f01c,16,7,0x3fb);   //software control 32k_clk
        subWriteReg(0x4000f01c,6,6,0x01);     //enable software control
    }
    else
    {
        subWriteReg(0x4000f01c,9,8,0x03);   //software control 32k_clk
        subWriteReg(0x4000f01c,6,6,0x00);   //disable software control
    }

    #endif

    for (i = 0; i < NUMBER_OF_PINS; i++)
    {
        if(m_gpioCtx.pin_assignments[i] != GPIO_PIN_ASSI_NONE)
        {
            if((i == P2) || (i == P3))
                hal_gpio_pin2pin3_control((gpio_pin_e)i,1);

            #ifdef XOSC_PIN_ALLOW

            if((i == P16) ||(i == P17))
                hal_gpio_cfg_analog_io((gpio_pin_e)i, Bit_DISABLE);

            #endif
        }

        if ((m_gpioCtx.pin_assignments[i] == GPIO_PIN_ASSI_OUT) && (m_gpioCtx.pin_retention_status & BIT(i)))
        {
            bool pol = hal_gpio_read((gpio_pin_e)i);
            hal_gpio_write((gpio_pin_e)i,pol);
            hal_gpio_retention_enable((gpio_pin_e)i,Bit_DISABLE);
        }

        if (m_gpioCtx.irq_ctx[i].enable)
        {
            hal_gpioin_enable((gpio_pin_e)i); //resume gpio irq
            hal_gpioin_wakeup_trigger((gpio_pin_e)i);//trigger gpio irq manually
        }
    }
}
#endif


void __attribute__((used)) hal_GPIO_IRQHandler(void)
{
    uint32 polarity = AP_GPIO->int_polarity;
    uint32 st = AP_GPIO->int_status;
    AP_GPIO->porta_eoi = st;//clear interrupt
    hal_gpioin_event(st, polarity);
}

int hal_gpioin_enable(gpio_pin_e pin)
{
    gpioin_Ctx_t* p_irq_ctx = &(m_gpioCtx.irq_ctx[0]);
    gpio_polarity_e type = POL_FALLING;
    uint32 pinVal = 0;

    if (pin > (NUMBER_OF_PINS - 1))
        return PPlus_ERR_NOT_SUPPORTED;

    if (p_irq_ctx[pin].posedgeHdl == NULL && p_irq_ctx[pin].negedgeHdl == NULL)
        return PPlus_ERR_NOT_REGISTED;

    m_gpioCtx.pin_assignments[pin] = GPIO_PIN_ASSI_IN;
    p_irq_ctx[pin].enable = TRUE;
    hal_gpio_pin_init(pin, GPIO_INPUT);

    //hal_gpio_pull_set(pin, PULL_DOWN); //??need disccuss
    if (p_irq_ctx[pin].posedgeHdl && p_irq_ctx[pin].negedgeHdl) //both raise and fall
    {
        pinVal = hal_gpio_read(pin);
        type = pinVal ? POL_FALLING : POL_RISING ;
    }
    else if (p_irq_ctx[pin].posedgeHdl) //raise
    {
        type = POL_RISING ;
    }
    else if (p_irq_ctx[pin].negedgeHdl) //fall
    {
        type = POL_FALLING;
    }

    hal_gpio_interrupt_enable(pin, type);
    return PPlus_SUCCESS;
}

int hal_gpioretention_register(gpio_pin_e pin)
{
    if (pin > (NUMBER_OF_PINS - 1))
        return PPlus_ERR_NOT_SUPPORTED;

    if(m_gpioCtx.pin_assignments[pin] != GPIO_PIN_ASSI_OUT)
        return PPlus_ERR_INVALID_PARAM;

    m_gpioCtx.pin_retention_status |= BIT(pin);
    return PPlus_SUCCESS;
}


int hal_gpioin_register(gpio_pin_e pin, gpioin_Hdl_t posedgeHdl, gpioin_Hdl_t negedgeHdl)
{
    int ret;
    gpioin_Ctx_t* p_irq_ctx = &(m_gpioCtx.irq_ctx[0]);
    hal_gpioin_disable(pin);
    p_irq_ctx[pin].posedgeHdl = posedgeHdl;
    p_irq_ctx[pin].negedgeHdl = negedgeHdl;
    ret = hal_gpioin_enable(pin);
    JUMP_FUNCTION(GPIO_IRQ_HANDLER)   =   (uint32_t)&hal_GPIO_IRQHandler;

    if (ret != PPlus_SUCCESS)
        hal_gpioin_disable(pin);

    return ret;
}

int hal_gpio_init(void)
{
    if (m_gpioCtx.state)
        return PPlus_ERR_INVALID_STATE;

    memset(&m_gpioCtx, 0, sizeof(m_gpioCtx));
    m_gpioCtx.state = TRUE;
    //disable all channel irq,unmask all channel
    AP_GPIO->inten = 0;
    AP_GPIO->intmask = 0;
    //disable all wakeup pin
    AP_WAKEUP->io_wu_mask_31_0 = 0;
    AP_WAKEUP->io_wu_mask_34_32 = 0;
    NVIC_SetPriority(GPIO_IRQn, IRQ_PRIO_HAL);
    NVIC_EnableIRQ(GPIO_IRQn);
    #if(CFG_SLEEP_MODE == PWR_MODE_SLEEP)
    hal_pwrmgr_register(MOD_GPIO, hal_gpio_sleep_handler, hal_gpio_wakeup_handler);
    #endif
    return PPlus_SUCCESS;
}

void hal_gpio_debug_mux(Freq_Type_e fre,bool en)
{
    if(en)
        AP_IOMUX->debug_mux_en |= BIT(fre);
    else
        AP_IOMUX->debug_mux_en &= ~BIT(fre);
}
