syscon.h

#ifndef __SYSCON_H
#define __SYSCON_H

#include <inttypes.h>

#include "board.h"
#include <hw/wrc_syscon_regs.h>

struct SYSCON_WB
{
  uint32_t RSTR;  /*Syscon Reset Register*/  
  uint32_t GPSR;  /*GPIO Set/Readback Register*/
  uint32_t GPCR;  /*GPIO Clear Register*/
  uint32_t HWFR;  /*Hardware Feature Register*/
  uint32_t TCR;   /*Timer Control Register*/
  uint32_t TVR;   /*Timer Counter Value Register*/
};

/*GPIO pins*/
#define GPIO_LED_LINK SYSC_GPSR_LED_LINK
#define GPIO_LED_STAT SYSC_GPSR_LED_STAT
#define GPIO_BTN1     SYSC_GPSR_BTN1
#define GPIO_BTN2     SYSC_GPSR_BTN2
#define GPIO_SFP_DET  SYSC_GPSR_SFP_DET

#define WRPC_FMC_I2C  0
#define WRPC_SFP_I2C  1

struct s_i2c_if
{
  uint32_t scl;
  uint32_t sda; 
};

extern struct s_i2c_if i2c_if[2];

void timer_init(uint32_t enable);
uint32_t timer_get_tics();
void timer_delay(uint32_t how_long);

static volatile struct SYSCON_WB *syscon = (volatile struct SYSCON_WB *) BASE_SYSCON;

/****************************
 *        GPIO
 ***************************/
static inline void gpio_out(int pin, int val)
{
  if(val)
    syscon->GPSR = pin;
  else
    syscon->GPCR = pin;
}

static inline int gpio_in(int pin)
{
  return syscon->GPSR & pin ? 1: 0;
}

static inline int sysc_get_memsize()
{
	return (SYSC_HWFR_MEMSIZE_R(syscon->HWFR) + 1) * 16;
}
        
#endif