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/*-
 * Copyright (c) 2006 M. Warner Losh.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This software is derived from software provide by Kwikbyte who specifically
 * disclaimed copyright on the code.
 *
 * $FreeBSD: release/9.1.0/sys/boot/arm/at91/libat91/lib_AT91RM9200.h 163533 2006-10-20 09:12:05Z imp $
 */

#ifndef __LIBAT91RM9200_H
#define __LIBAT91RM9200_H

#include "at91rm9200.h"

//*----------------------------------------------------------------------------
//* \fn    AT91F_PMC_EnablePeriphClock
//* \brief Enable peripheral clock
//*----------------------------------------------------------------------------
static inline void
AT91F_PMC_EnablePeriphClock (
       AT91PS_PMC pPMC, // \arg pointer to PMC controller
       unsigned int periphIds)  // \arg IDs of peripherals to enable
{
       pPMC->PMC_PCER = periphIds;
}

/* *****************************************************************************
                SOFTWARE API FOR PIO
   ***************************************************************************** */
//*----------------------------------------------------------------------------
//* \fn    AT91F_PIO_CfgPeriph
//* \brief Enable pins to be drived by peripheral
//*----------------------------------------------------------------------------
static inline
void AT91F_PIO_CfgPeriph(
	AT91PS_PIO pPio,             // \arg pointer to a PIO controller
	unsigned int periphAEnable,  // \arg PERIPH A to enable
	unsigned int periphBEnable)  // \arg PERIPH B to enable

{
	if (periphAEnable)
		pPio->PIO_ASR = periphAEnable;
	if (periphBEnable)
		pPio->PIO_BSR = periphBEnable;
	pPio->PIO_PDR = (periphAEnable | periphBEnable); // Set in Periph mode
}

/* *****************************************************************************
                SOFTWARE API FOR MCI
   ***************************************************************************** */
//* Classic MCI Data Timeout Register Configuration with 1048576 MCK cycles between 2 data transfer
#define AT91C_MCI_DTOR_1MEGA_CYCLES	(AT91C_MCI_DTOCYC | AT91C_MCI_DTOMUL)

//* Classic MCI SDCard Register Configuration with 1-bit data bus on slot A
#define AT91C_MCI_MMC_SLOTA	(AT91C_MCI_SCDSEL & 0x0)

//* Classic MCI SDCard Register Configuration with 1-bit data bus on slot B
#define AT91C_MCI_MMC_SLOTB	(AT91C_MCI_SCDSEL)

//* Classic MCI SDCard Register Configuration with 4-bit data bus on slot A
#define AT91C_MCI_SDCARD_4BITS_SLOTA	( (AT91C_MCI_SCDSEL & 0x0) | AT91C_MCI_SCDBUS )

//* Classic MCI SDCard Register Configuration with 4-bit data bus on slot B
#define AT91C_MCI_SDCARD_4BITS_SLOTB	(AT91C_MCI_SCDSEL | AT91C_MCI_SCDBUS)



//*----------------------------------------------------------------------------
//* \fn    AT91F_MCI_Configure
//* \brief Configure the MCI
//*----------------------------------------------------------------------------
static inline
void AT91F_MCI_Configure(
        AT91PS_MCI pMCI,  			 // \arg pointer to a MCI controller
        unsigned int DTOR_register,  // \arg Data Timeout Register to be programmed
        unsigned int MR_register,  	 // \arg Mode Register to be programmed
        unsigned int SDCR_register)  // \arg SDCard Register to be programmed
{
    //* Reset the MCI
    pMCI->MCI_CR = AT91C_MCI_MCIEN | AT91C_MCI_PWSEN;

    //* Disable all the interrupts
    pMCI->MCI_IDR = 0xFFFFFFFF;

    //* Set the Data Timeout Register
    pMCI->MCI_DTOR = DTOR_register;

    //* Set the Mode Register
    pMCI->MCI_MR = MR_register;

    //* Set the SDCard Register
    pMCI->MCI_SDCR = SDCR_register;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_MCI_CfgPMC
//* \brief Enable Peripheral clock in PMC for  MCI
//*----------------------------------------------------------------------------
static inline void
AT91F_MCI_CfgPMC(void)
{
	AT91F_PMC_EnablePeriphClock(
		AT91C_BASE_PMC, // PIO controller base address
		((unsigned int) 1 << AT91C_ID_MCI));
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_MCI_CfgPIO
//* \brief Configure PIO controllers to drive MCI signals
//*----------------------------------------------------------------------------
static inline void
AT91F_MCI_CfgPIO(void)
{
	// Configure PIO controllers to periph mode
	AT91F_PIO_CfgPeriph(
		AT91C_BASE_PIOA, // PIO controller base address
		((unsigned int) AT91C_PA28_MCCDA   ) |
		((unsigned int) AT91C_PA29_MCDA0   ) |
		((unsigned int) AT91C_PA27_MCCK    ), // Peripheral A
		0); // Peripheral B
	// Configure PIO controllers to periph mode
	AT91F_PIO_CfgPeriph(
		AT91C_BASE_PIOB, // PIO controller base address
		0, // Peripheral A
		((unsigned int) AT91C_PB5_MCDA3   ) |
		((unsigned int) AT91C_PB3_MCDA1   ) |
		((unsigned int) AT91C_PB4_MCDA2   )); // Peripheral B
}


/* *****************************************************************************
                SOFTWARE API FOR PDC
   ***************************************************************************** */
//*----------------------------------------------------------------------------
//* \fn    AT91F_PDC_SetNextRx
//* \brief Set the next receive transfer descriptor
//*----------------------------------------------------------------------------
static inline void
AT91F_PDC_SetNextRx (
	AT91PS_PDC pPDC,     // \arg pointer to a PDC controller
	char *address,       // \arg address to the next bloc to be received
	unsigned int bytes)  // \arg number of bytes to be received
{
	pPDC->PDC_RNPR = (unsigned int) address;
	pPDC->PDC_RNCR = bytes;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PDC_SetNextTx
//* \brief Set the next transmit transfer descriptor
//*----------------------------------------------------------------------------
static inline void
AT91F_PDC_SetNextTx(
	AT91PS_PDC pPDC,       // \arg pointer to a PDC controller
	char *address,         // \arg address to the next bloc to be transmitted
	unsigned int bytes)    // \arg number of bytes to be transmitted
{
	pPDC->PDC_TNPR = (unsigned int) address;
	pPDC->PDC_TNCR = bytes;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PDC_SetRx
//* \brief Set the receive transfer descriptor
//*----------------------------------------------------------------------------
static inline void
AT91F_PDC_SetRx(
	AT91PS_PDC pPDC,       // \arg pointer to a PDC controller
	char *address,         // \arg address to the next bloc to be received
	unsigned int bytes)    // \arg number of bytes to be received
{
	pPDC->PDC_RPR = (unsigned int) address;
	pPDC->PDC_RCR = bytes;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PDC_SetTx
//* \brief Set the transmit transfer descriptor
//*----------------------------------------------------------------------------
static inline void
AT91F_PDC_SetTx(
	AT91PS_PDC pPDC,       // \arg pointer to a PDC controller
	char *address,         // \arg address to the next bloc to be transmitted
	unsigned int bytes)    // \arg number of bytes to be transmitted
{
	pPDC->PDC_TPR = (unsigned int) address;
	pPDC->PDC_TCR = bytes;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PDC_EnableTx
//* \brief Enable transmit
//*----------------------------------------------------------------------------
static inline void
AT91F_PDC_EnableTx(
	AT91PS_PDC pPDC )       // \arg pointer to a PDC controller
{
	pPDC->PDC_PTCR = AT91C_PDC_TXTEN;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PDC_EnableRx
//* \brief Enable receive
//*----------------------------------------------------------------------------
static inline void
AT91F_PDC_EnableRx(
	AT91PS_PDC pPDC )       // \arg pointer to a PDC controller
{
	pPDC->PDC_PTCR = AT91C_PDC_RXTEN;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PDC_DisableTx
//* \brief Disable transmit
//*----------------------------------------------------------------------------
static inline void
AT91F_PDC_DisableTx(
	AT91PS_PDC pPDC )       // \arg pointer to a PDC controller
{
	pPDC->PDC_PTCR = AT91C_PDC_TXTDIS;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PDC_DisableRx
//* \brief Disable receive
//*----------------------------------------------------------------------------
static inline void
AT91F_PDC_DisableRx(
	AT91PS_PDC pPDC )       // \arg pointer to a PDC controller
{
	pPDC->PDC_PTCR = AT91C_PDC_RXTDIS;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PDC_Open
//* \brief Open PDC: disable TX and RX reset transfer descriptors, re-enable RX and TX
//*----------------------------------------------------------------------------
static inline void
AT91F_PDC_Open(
	AT91PS_PDC pPDC)       // \arg pointer to a PDC controller
{
    //* Disable the RX and TX PDC transfer requests
	AT91F_PDC_DisableRx(pPDC);
	AT91F_PDC_DisableTx(pPDC);

	//* Reset all Counter register Next buffer first
	AT91F_PDC_SetNextTx(pPDC, (char *) 0, 0);
	AT91F_PDC_SetNextRx(pPDC, (char *) 0, 0);
	AT91F_PDC_SetTx(pPDC, (char *) 0, 0);
	AT91F_PDC_SetRx(pPDC, (char *) 0, 0);

    //* Enable the RX and TX PDC transfer requests
	AT91F_PDC_EnableRx(pPDC);
	AT91F_PDC_EnableTx(pPDC);
}

#endif

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