/*
 * ARMIO.C 
 *
 *
 * Control diagnostic bits
 *
 * Reference : GCS207
 *
 */


#include "../include/config.h"
#include "../include/sys_types.h"

#include "mem.h"
#include "iq.h"
#include "armio.h"

#if 0
/* FreeCalypso: abb.h hasn't been integrated yet */
#include "abb.h"	 // for AI_Power function : to be removed, use ABB_Power_Off in abb.c file instead !!!
#endif

#if (CHIPSET != 12)
/*
 * AI_EnableBit
 *
 * Enable ARMIO input/output bit (see CLKM module specification)
 */
void AI_EnableBit(int bit)
{
  *((volatile SYS_UWORD16 *) CLKM_IO_CNTL) |= (1<<bit); 
}

/*
 * AI_DisableBit
 *
 * Disable ARMIO input/output bit (see CLKM module specification)
 */
void AI_DisableBit(int bit)
{
  *((volatile SYS_UWORD16 *) CLKM_IO_CNTL) &= ~(1<<bit); 
}

#endif /* CHIPSET != 12 */

/*
 * AI_SetBit
 *
 * Switch-on one bit
 */
void AI_SetBit(int bit)
{
   *((volatile SYS_UWORD16 *) ARMIO_OUT) |= (1<<bit); 
}

/*
 * AI_ResetBit
 *
 * Switch-off one bit
 */
void AI_ResetBit(int bit)
{
   *((volatile SYS_UWORD16 *) ARMIO_OUT) &= ~(1<<bit); 
}

/*
 * AI_ConfigBitAsOutput
 *
 * Set this bit as an output
 */
void AI_ConfigBitAsOutput(int bit)
{
   *((volatile SYS_UWORD16 *) ARMIO_IO_CNTL) &= ~(1<<bit); 
}

/*
 * AI_ConfigBitAsInput
 *
 * Set this bit as an input
 */
void AI_ConfigBitAsInput(int bit)
{
   *((volatile SYS_UWORD16 *) ARMIO_IO_CNTL) |= (1<<bit); 
}


/*
 * AI_ReadBit
 *
 * Read value in register
 */
SYS_BOOL AI_ReadBit(int bit)
{
   if ((*((volatile SYS_UWORD16 *) ARMIO_IN)) & (1<<bit))
      return (1);
   else
      return (0);
}

/*
 * AI_Power
 *
 * Switch-on or off the board
 *
 * Parameters : SYS_UWORD8 power: 1 to power-on (maintain power)
 *                                0 to power-off
 *
 */
// #if (!OP_L1_STANDALONE)
#if 0
void AI_Power(SYS_UWORD8 power)
{
  if (power == 0) 
  {
	ABB_Power_Off();
  }
}
#endif

/*
 * AI_ResetIoConfig
 *
 * Reset all default IO configurations
 *
 */
void AI_ResetIoConfig(void)
{
   *((volatile SYS_UWORD16 *) ARMIO_IO_CNTL) = 0xFFFF; // all bits are inputs
#if (CHIPSET != 12)
   *((volatile SYS_UWORD16 *) CLKM_IO_CNTL) = 0;       // default config
  #endif /* CHIPSET != 12 */
}


/*
 * AI_ClockEnable
 *
 * Enable ARMIO clock module
 *
 */
void AI_ClockEnable(void)
{
   *((volatile SYS_UWORD16 *) ARMIO_CNTL_REG) |= ARMIO_CLOCKEN;    // set to 1 bit 5
}

/*
 * The target-specific AI_InitIOConfig() function will need to go here.
 */

/*
 * AI_SelectIOForIT
 *
 * Select which IO will be used to generate an interrupt.
 * 'Edge' specifies if interrup must be detected on falling or rising edge.
 *
 * Warning: parameters are not checked.
 */
 
void AI_SelectIOForIT (SYS_UWORD16 Pin, SYS_UWORD16 Edge)
{
  #if (CHIPSET == 12)
    /*
     *  Update INTERRUPT_LEVEL_REG with Edge configuration on Pin selection
     */
    GPIO_INTERRUPT_LEVEL_REG = (Edge & 0x0001) << Pin;

    /*
     *  Update INTERRUPT_MASK_REG to enable interrupt generation on Pin selection
     */
    GPIO_INTERRUPT_MASK_REG = 1 << Pin;
  #else
    /*
     * Bit SET_GPIO_EVENT_MODE (bit 0) is set to enable the GPIO event mode.
     */
     
    *((volatile SYS_UWORD16 *) ARMIO_GPIO_EVENT_MODE) = (Pin << 1) + (Edge << 5) + 1;
  #endif
}

#if (CHIPSET != 12)
/*
 * AI_CheckITSource
 *
 * Check if the interrupt specified by 'Source' is active or not.
 *
 * Output: 0: IT is not active
 *         1: IT is active
 *
 * Warning: parameters are not checked.
 *
 * Warning: If the keypad and GPIO interrupts may occur the GPIO interrupt
 *          must be checked first because the GPIO status bit is reset when
 *          the register is read.
 */
 
int  AI_CheckITSource (SYS_UWORD16 Source)
{
    return (*((volatile SYS_UWORD16 *) ARMIO_KBD_GPIO_INT) & Source ? 1 : 0);
}

/*
 * AI_UnmaskIT
 *
 * Unmask the IT specified by 'Source' (keyboard or GPIO).
 *
 * Warning: parameters are not checked.
 */
 
void AI_UnmaskIT (SYS_UWORD16 Source)
{
    *((volatile SYS_UWORD16 *) ARMIO_KBD_GPIO_MASKIT) &= ~Source;
}

/*
 * AI_MaskIT
 *
 * Mask the IT specified by 'Source' (keyboard or GPIO).
 *
 * Warning: parameters are not checked.
 */
 
void AI_MaskIT (SYS_UWORD16 Source)
{
    *((volatile SYS_UWORD16 *) ARMIO_KBD_GPIO_MASKIT) |= Source;
}
#endif /* CHIPSET != 12 */

#if (CHIPSET == 12)

  void AI_MaskIT(SYS_UWORD16 d_io_number) {
    GPIO_INTERRUPT_MASK_REG |= (1 << d_io_number);
  } /* f_gpio_mask_it() */
  
  void AI_UnmaskIT(SYS_UWORD16 d_io_number) {
    GPIO_INTERRUPT_MASK_REG &= ~(1 << d_io_number);
  } /* f_gpio_unmask_it() */

#endif