WorkCodes/CST92F25_SDK_V1.4/Software/BLE/components/driver/gpio/gpio.c

/**
 * @file	gpio.c
 * @author	chipsea
 * @brief	Contains all functions support for gpio and iomux driver
 * @version	0.1
 * @date	2020-11-30
 * @copyright Copyright (c) 2020, CHIPSEA Co., Ltd.
 * @note
 */
#include "sdk_config.h"
#include "log.h"
#include "mcu.h"
#include "gpio.h"
#include "types.h"
#include "clock.h"
#include "error.h"
#include "string.h"
#include "pwrmgr.h"
#include "jump_function.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];
    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,},
};

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(GpioPin_t pin)
{
    subWriteReg(&(AP_GPIO->intmask),pin,pin,1);
    subWriteReg(&(AP_GPIO->inten),pin,pin,0);

    return ERR_NONE;
}

static void hal_gpio_wakeup_control(GpioPin_t 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 HalGpioDsControl(GpioPin_t pin, bit_action_e value)
{
    if(value)	
        AP_IOMUX->pad_ps0 |= BIT(pin);	
    else	
        AP_IOMUX->pad_ps0 &= ~BIT(pin);	
}

ErrCode_t HalGpioAnalogConfig(GpioPin_t pin, bit_action_e value) 
{
    if((pin < P11) || (pin > P25))
        return ERR_INVALID_PARAM;
	if(value > Bit_ENABLE)
	{
		return ERR_INVALID_DATA;
	}

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

    return ERR_NONE;
}

void HalGpioPin2Pin3Control(GpioPin_t 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);	
}

static void hal_gpio_retention_enable(GpioPin_t pin,uint8_t en)
{	
    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]);
        }
    }
}

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

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

    p_irq_ctx[pin].enable = FALSE;
    m_gpioCtx.pin_assignments[pin] = GPIO_PIN_ASSI_NONE;
    HalGpioPinInit(pin, GPIO_INPUT);

    return hal_gpio_interrupt_disable(pin);
}

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

    if (pin >= NUMBER_OF_PINS)	
        return 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 ERR_NONE;
}

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

    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");
    }
}

static void hal_gpioin_wakeup_trigger(GpioPin_t pin)
{
    uint8_t pin_state = (uint8_t)HalGpioGet(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);
}

__ATTR_SECTION_SRAM__ 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((GpioPin_t)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((GpioPin_t)i, type);
            }
            else if (p_irq_ctx[i].posedgeHdl) //raise
            {
                hal_gpio_interrupt_enable((GpioPin_t)i, POL_RISING );
            }
            else if (p_irq_ctx[i].negedgeHdl) //fall
            {
                hal_gpio_interrupt_enable((GpioPin_t)i, POL_FALLING);
            }
        }
    }
}

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

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

    m_gpioCtx.pin_assignments[pin] = GPIO_PIN_ASSI_IN;

    p_irq_ctx[pin].enable = TRUE;
    HalGpioPinInit(pin, GPIO_INPUT);

    //HalGpioPupdConfig(pin, PULL_DOWN); //??need disccuss
    if (p_irq_ctx[pin].posedgeHdl && p_irq_ctx[pin].negedgeHdl) //both raise and fall
    {
        pinVal = HalGpioGet(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 ERR_NONE;
}

void GpioSleepHandler(void)
{
    int i;
    gpio_polarity_e pol;
    uint8_t ic_ver = get_ic_version();
    
    for (i = 0; i < NUMBER_OF_PINS; i++) 
    {
        //config wakeup
        if (m_gpioCtx.pin_assignments[i] == GPIO_PIN_ASSI_OUT)
        {
            hal_gpio_retention_enable((GpioPin_t)i,Bit_ENABLE);
        }
        if (m_gpioCtx.pin_assignments[i] == GPIO_PIN_ASSI_IN)
        {
		
			if(ic_ver != VERSION_0100 && ((i==P16)||(i==P17)))
			{
				 HalGpioAnalogConfig((GpioPin_t)i,Bit_DISABLE);
				 subWriteReg(&(AP_AON->PMCTL2_0),6,6,0x01);
				 WaitUs(50);
				 pol = HalGpioGet((GpioPin_t)i) ? POL_FALLING : POL_RISING ;
				 subWriteReg(&(AP_AON->PMCTL2_0),6,6,0x00);
			}	
			else
			{								
				pol = HalGpioGet((GpioPin_t)i) ? POL_FALLING : POL_RISING ;
			}
			
            HalGpioWkupConfig((GpioPin_t)i, pol);
            m_gpioCtx.irq_ctx[i].pin_state = HalGpioGet((GpioPin_t)i);
        }
    }
}

void GpioWakeupHandler(void)
{
    int i;
    uint8_t ic_ver = get_ic_version();
    
    NVIC_SetPriority(GPIO_IRQn, IRQ_PRIO_HAL);
    NVIC_EnableIRQ(GPIO_IRQn);
    for (i = 0; i < NUMBER_OF_PINS; i++) 
    {
        if( ((i == GPIO_P02) || (i == GPIO_P03)) && (m_gpioCtx.pin_assignments[i] != GPIO_PIN_ASSI_NONE) )
		{
            HalGpioPin2Pin3Control((GpioPin_t)i,1);
		}
		if(ic_ver != VERSION_0100 && ((i==P16)||(i==P17)))
		{
			HalGpioAnalogConfig((GpioPin_t)i,Bit_DISABLE);
		}
        if (m_gpioCtx.pin_assignments[i] == GPIO_PIN_ASSI_OUT)
        {

            bool pol = HalGpioGet((GpioPin_t)i);
            HalGpioSet((GpioPin_t)i, (bit_action_e)pol);
			HalGpioPinInit((GpioPin_t)i, GPIO_OUTPUT);
            hal_gpio_retention_enable((GpioPin_t)i, Bit_DISABLE);
        }
    }
    for (i = 0; i < NUMBER_OF_PINS; i++)
    {
        if (m_gpioCtx.irq_ctx[i].enable)
        {
            hal_gpioin_enable((GpioPin_t)i); //resume gpio irq
            hal_gpioin_wakeup_trigger((GpioPin_t)i);//trigger gpio irq manually
        }
    }
}

__ATTR_SECTION_SRAM__ void HalGpioIRQHandler(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);
}

bool HalBootPinStatusGet(void)
{
	bool status;
	uint32_t config;
	config = *(volatile unsigned int *)0x4000f058;
	status = (config & 0x40)>> 6;
	return status;
}

void HalGpioSet(GpioPin_t pin, bit_action_e bitVal)
{
	if(bitVal)
        AP_GPIO->swporta_dr |= BIT(pin);
    else
        AP_GPIO->swporta_dr &= ~BIT(pin);
}

bool HalGpioGet(GpioPin_t pin)
{
	uint32_t r;
	if(pin >= GPIO_NUM )
	{
		return 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);
}

ErrCode_t HalGpioPupdConfig(GpioPin_t pin, gpio_pupd_e type)
{
	if(pin >= GPIO_NUM || type > GPIO_PULL_DOWN)
	{
		return ERR_NOT_SUPPORTED;
	}
	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);
	return ERR_NONE;
}

ErrCode_t HalGpioFmuxEnable(GpioPin_t pin, bit_action_e value)
{
	if(pin >= GPIO_NUM || value > Bit_ENABLE)
	{
		return ERR_NOT_SUPPORTED;
	}
	if(value)
    {
        AP_IOMUX->full_mux0_en |= BIT(pin);
    }
    else
	{
        AP_IOMUX->full_mux0_en &= ~BIT(pin);
	}
	return ERR_NONE;
}

ErrCode_t HalGpioFmuxConfig(GpioPin_t pin, gpio_fmux_e type)
{
	uint8_t  h = 0, l = 0;
    uint32_t reg_index;
    uint32_t bit_index;

    if( (pin >= GPIO_NUM) || (type > FMUX_ANT_SEL_2) )
    {
		return ERR_NOT_SUPPORTED;
	}
	reg_index = pin / 4;
	bit_index = pin % 4;
	l = 8 * bit_index;
	h = l + 5;
	subWriteReg(&(AP_IOMUX->gpio_sel[reg_index]),h,l,type);
	HalGpioFmuxEnable(pin, Bit_ENABLE);

	return ERR_NONE;
}

ErrCode_t HalGpioWkupConfig(GpioPin_t pin, gpio_polarity_e type)
{
	if(pin >= GPIO_NUM || type > POL_RISING)
	{
		return ERR_NOT_SUPPORTED;
	}
    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 ERR_INVALID_STATE;
	 	
    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

	return ERR_NONE;
}

ErrCode_t HalGpioRegister(GpioPin_t pin, gpioin_Hdl_t posedgeHdl, gpioin_Hdl_t negedgeHdl)
{
	ErrCode_t ret;
    gpioin_Ctx_t* p_irq_ctx = &(m_gpioCtx.irq_ctx[0]);

	if(pin >= GPIO_NUM )
	{
		return ERR_NOT_SUPPORTED;
	}
    hal_gpioin_disable(pin);
    p_irq_ctx[pin].posedgeHdl = posedgeHdl;
    p_irq_ctx[pin].negedgeHdl = negedgeHdl;
    ret = hal_gpioin_enable(pin);

    JUMP_FUNCTION(V16_IRQ_HANDLER)   =   (uint32_t)&HalGpioIRQHandler;
    
    if (ret != ERR_NONE)
        hal_gpioin_disable(pin);

    return ret;
}

ErrCode_t HalGpioUnregister(GpioPin_t pin)
{
	gpioin_Ctx_t* p_irq_ctx = &(m_gpioCtx.irq_ctx[0]);

    if (pin >= GPIO_NUM)
        return ERR_NOT_SUPPORTED;

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

    return ERR_NONE;
}

ErrCode_t HalGpioInit(void)
{
    if (m_gpioCtx.state)
        return 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);

    hal_pwrmgr_register(MOD_GPIO, GpioSleepHandler, GpioWakeupHandler);

    return ERR_NONE;
}

ErrCode_t HalGpioPinInit(GpioPin_t pin, gpio_dir_t type)
{
	if(pin >= GPIO_NUM || type > GPIO_OUTPUT)
	{
		return ERR_NOT_SUPPORTED;
	}
    HalGpioFmuxEnable(pin,Bit_DISABLE);
    if((pin == P2) || (pin == P3))
        HalGpioPin2Pin3Control(pin,1);
    HalGpioAnalogConfig(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 ERR_NONE;
}