/*
    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
                 2011 Giovanni Di Sirio.

    This file is part of ChibiOS/RT.

    ChibiOS/RT is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.

    ChibiOS/RT is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/**
 * @file    sdc.c
 * @brief   SDC Driver code.
 *
 * @addtogroup SDC
 * @{
 */

#include "ch.h"
#include "hal.h"

#if HAL_USE_SDC || defined(__DOXYGEN__)

/*===========================================================================*/
/* Driver exported variables.                                                */
/*===========================================================================*/

/*===========================================================================*/
/* Driver local variables.                                                   */
/*===========================================================================*/

/*===========================================================================*/
/* Driver local functions.                                                   */
/*===========================================================================*/

/*===========================================================================*/
/* Driver exported functions.                                                */
/*===========================================================================*/

/**
 * @brief   SDC Driver initialization.
 * @note    This function is implicitly invoked by @p halInit(), there is
 *          no need to explicitly initialize the driver.
 *
 * @init
 */
void sdcInit(void) {

  sdc_lld_init();
}

/**
 * @brief   Initializes the standard part of a @p SDCDriver structure.
 *
 * @param[out] sdcp     pointer to the @p SDCDriver object
 *
 * @init
 */
void sdcObjectInit(SDCDriver *sdcp) {

  sdcp->state  = SDC_STOP;
  sdcp->config = NULL;
}

/**
 * @brief   Configures and activates the SDC peripheral.
 *
 * @param[in] sdcp      pointer to the @p SDCDriver object
 * @param[in] config    pointer to the @p SDCConfig object
 *
 * @api
 */
void sdcStart(SDCDriver *sdcp, const SDCConfig *config) {

  chDbgCheck((sdcp != NULL) && (config != NULL), "sdcStart");

  chSysLock();
  chDbgAssert((sdcp->state == SDC_STOP) || (sdcp->state == SDC_READY),
              "sdcStart(), #1", "invalid state");
  sdcp->config = config;
  sdc_lld_start(sdcp);
  sdcp->state = SDC_READY;
  chSysUnlock();
}

/**
 * @brief   Deactivates the SDC peripheral.
 *
 * @param[in] sdcp      pointer to the @p SDCDriver object
 *
 * @api
 */
void sdcStop(SDCDriver *sdcp) {

  chDbgCheck(sdcp != NULL, "sdcStop");

  chSysLock();
  chDbgAssert((sdcp->state == SDC_STOP) || (sdcp->state == SDC_READY),
              "sdcStop(), #1", "invalid state");
  sdc_lld_stop(sdcp);
  sdcp->state = SDC_STOP;
  chSysUnlock();
}

/**
 * @brief   Performs the initialization procedure on the inserted card.
 * @details This function should be invoked when a card is inserted and
 *          brings the driver in the @p SDC_ACTIVE state where it is possible
 *          to perform read and write operations.
 *
 * @param[in] sdcp      pointer to the @p SDCDriver object
 * @return              The operation status.
 * @retval FALSE        operation succeeded, the driver is now
 *                      in the @p SDC_ACTIVE state.
 * @retval TRUE         operation failed.
 *
 * @api
 */
bool_t sdcConnect(SDCDriver *sdcp) {

  chDbgCheck(sdcp != NULL, "sdcConnect");

  chSysLock();
  chDbgAssert(sdcp->state == SDC_READY, "mmcConnect(), #1", "invalid state");
  sdcp->state = SDC_INITNG;
  chSysUnlock();

  sdcp->state = SDC_ACTIVE;
  return FALSE;
}

/**
 * @brief   Brings the driver in a state safe for card removal.
 *
 * @param[in] sdcp      pointer to the @p SDCDriver object
 * @return              The operation status.
 * @retval FALSE        the operation succeeded and the driver is now
 *                      in the @p SDC_READY state.
 * @retval TRUE         the operation failed.
 *
 * @api
 */
bool_t sdcDisconnect(SDCDriver *sdcp) {

  chDbgCheck(sdcp != NULL, "sdcConnect");

  chSysLock();
  chDbgAssert(sdcp->state == SDC_ACTIVE,
              "sdcDisconnect(), #1", "invalid state");
  sdcp->state = SDC_READY;
  chSysUnlock();
  return FALSE;
}

/**
 * @brief   Reads one or more blocks.
 * @pre     The driver must be in the @p SDC_ACTIVE state after a successful
 *          sdcConnect() invocation.
 *
 * @param[in] sdcp      pointer to the @p SDCDriver object
 * @param[in] startblk  first block to read
 * @param[out] buffer   pointer to the read buffer
 * @return              The operation status.
 * @retval FALSE        operation succeeded, the requested blocks have been
 *                      read.
 * @retval TRUE         operation failed, the state of the buffer is uncertain.
 *
 * @api
 */
bool_t sdcRead(SDCDriver *sdcp, uint32_t startblk,
               uint8_t *buffer, uint32_t n) {

}

/**
 * @brief   Writes one or more blocks.
 * @pre     The driver must be in the @p SDC_ACTIVE state after a successful
 *          sdcConnect() invocation.
 *
 * @param[in] sdcp      pointer to the @p SDCDriver object
 * @param[in] startblk  first block to write
 * @param[out] buffer   pointer to the write buffer
 * @return              The operation status.
 * @retval FALSE        operation succeeded, the requested blocks have been
 *                      written.
 * @retval TRUE         operation failed.
 *
 * @api
 */
bool_t sdcWrite(SDCDriver *sdcp, uint32_t startblk,
                const uint8_t *buffer, uint32_t n) {

}

#endif /* HAL_USE_SDC */

/** @} */