#ifndef CYGONCE_DEVS_SPI_ARM_AT91_H
#define CYGONCE_DEVS_SPI_ARM_AT91_H
//==========================================================================
//
//      spi_at91.h
//
//      Atmel AT91 (ARM) SPI driver defines
//
//==========================================================================
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//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):     Savin Zlobec <savin@elatec.si> 
// Date:          2004-08-25
//
//####DESCRIPTIONEND####
//
//==========================================================================

#include <pkgconf/hal.h>
#include <pkgconf/io_spi.h>

#include <cyg/infra/cyg_type.h>
#include <cyg/hal/drv_api.h>
#include <cyg/io/spi.h>

//-----------------------------------------------------------------------------
// AT91 SPI BUS

typedef struct cyg_spi_at91_bus_s
{
    // ---- Upper layer data ----

    cyg_spi_bus   spi_bus;                  // Upper layer SPI bus data

    // ---- Lower layer data ----
     
    cyg_interrupt     spi_interrupt;        // SPI interrupt object
    cyg_handle_t      spi_interrupt_handle; // SPI interrupt handle
    cyg_drv_mutex_t   transfer_mx;          // Transfer mutex
    cyg_drv_cond_t    transfer_cond;        // Transfer condition
    cyg_bool          transfer_end;         // Transfer end flag
    cyg_bool          cs_up;                // Chip Select up flag 
    cyg_vector_t      interrupt_number;     // SPI Interrupt Number
    cyg_addrword_t    base;                 // Base Address of the SPI peripheral
    cyg_uint8         cs_en[4];             // The Configurations state for the CS
    cyg_uint32        cs_gpio[4];           // The GPIO Configurations for the CS
} cyg_spi_at91_bus_t;

//-----------------------------------------------------------------------------
// AT91 SPI DEVICE

typedef struct cyg_spi_at91_device_s
{
    // ---- Upper layer data ----

    cyg_spi_device spi_device;  // Upper layer SPI device data

    // ---- Lower layer data (configurable) ----

    cyg_uint8  dev_num;         // Device number
    cyg_uint8  cl_pol;          // Clock polarity (0 or 1)
    cyg_uint8  cl_pha;          // Clock phase    (0 or 1)
    cyg_uint32 cl_brate;        // Clock baud rate
    cyg_uint16 cs_up_udly;      // Delay in us between CS up and transfer start
    cyg_uint16 cs_dw_udly;      // Delay in us between transfer end and CS down
    cyg_uint16 tr_bt_udly;      // Delay in us between two transfers

    // ---- Lower layer data (internal) ----

    cyg_bool   init;            // Is device initialized
    cyg_uint8  cl_scbr;         // Value of SCBR (SPI clock) reg field
    cyg_uint8  cl_div32;        // Divide SPI master clock by 32
} cyg_spi_at91_device_t;

//-----------------------------------------------------------------------------
// AT91 SPI exported busses

/* For backwards compatability  */
#define cyg_spi_at91_bus cyg_spi_at91_bus0

externC cyg_spi_at91_bus_t cyg_spi_at91_bus0;
externC cyg_spi_at91_bus_t cyg_spi_at91_bus1;

//-----------------------------------------------------------------------------

#endif // CYGONCE_DEVS_SPI_ARM_AT91_H 

//-----------------------------------------------------------------------------
// End of spi_at91.h
