text: /************************************************************************************
   * configs/twr-k60n512/src/k60_spi.c
   *
   *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
   *   Author: Gregory Nutt <gnutt@nuttx.org>
   *
   * 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.
   * 3. Neither the name NuttX nor the names of its contributors may be
   *    used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "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
   * COPYRIGHT OWNER OR CONTRIBUTORS 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.
   *
   ************************************************************************************/
  
  /************************************************************************************
   * Included Files
   ************************************************************************************/
  
  #include <nuttx/config.h>
  
  #include <stdint.h>
  #include <stdbool.h>
  #include <debug.h>
  
  #include <nuttx/spi/spi.h>
  #include <arch/board/board.h>
  
  #include "up_arch.h"
  #include "chip.h"
  #include "kinetis.h"
  #include "twr-k60n512.h"
  
  #if defined(CONFIG_KINETIS_SPI0) || defined(CONFIG_KINETIS_SPI1) || \
  	defined(CONFIG_KINETIS_SPI2)
  
  /************************************************************************************
   * Public Functions
   ************************************************************************************/
  
  /************************************************************************************
   * Name: kinetis_spidev_initialize
   *
   * Description:
   *   Called to configure SPI chip select GPIO pins for the TWR-K60N512 board.
   *
   ************************************************************************************/
  
  void weak_function kinetis_spidev_initialize(void)
  {
  # warning "Missing logic"
  }
  
  /****************************************************************************
   * Name:  kinetis_spi0/1/2select and kinetis_spi0/1/2status
   *
   * Description:
   *   The external functions, kinetis_spi0/1/2select and kinetis_spi0/1/2status must be
   *   provided by board-specific logic.  They are implementations of the select
   *   and status methods of the SPI interface defined by struct spi_ops_s (see
   *   include/nuttx/spi/spi.h). All other methods (including kinetis_spibus_initialize())
   *   are provided by common Kinetis logic.  To use this common SPI logic on your
   *   board:
   *
   *   1. Provide logic in kinetis_boardinitialize() to configure SPI chip select
   *      pins.
   *   2. Provide kinetis_spi0/1/2select() and kinetis_spi0/1/2status() functions in your
   *      board-specific logic.  These functions will perform chip selection and
   *      status operations using GPIOs in the way your board is configured.
   *   3. Add a calls to kinetis_spibus_initialize() in your low level application
   *      initialization logic
   *   4. The handle returned by kinetis_spibus_initialize() may then be used to bind the
   *      SPI driver to higher level logic (e.g., calling
   *      mmcsd_spislotinitialize(), for example, will bind the SPI driver to
   *      the SPI MMC/SD driver).
   *
   ****************************************************************************/
  
  #ifdef CONFIG_KINETIS_SPI0
  void kinetis_spi0select(FAR struct spi_dev_s *dev, uint32_t devid, bool selected)
  {
    spiinfo("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
  # warning "Missing logic"
  }
  
  uint8_t kinetis_spi0status(FAR struct spi_dev_s *dev, uint32_t devid)
  {
  # warning "Missing logic"
    return SPI_STATUS_PRESENT;
  }
  #endif
  
  #ifdef CONFIG_KINETIS_SPI1
  void kinetis_spi1select(FAR struct spi_dev_s *dev, uint32_t devid, bool selected)
  {
    spiinfo("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
  # warning "Missing logic"
  }
  
  uint8_t kinetis_spi1status(FAR struct spi_dev_s *dev, uint32_t devid)
  {
  # warning "Missing logic"
    return SPI_STATUS_PRESENT;
  }
  #endif
  
  #ifdef CONFIG_KINETIS_SPI2
  void kinetis_spi2select(FAR struct spi_dev_s *dev, uint32_t devid, bool selected)
  {
    spiinfo("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
  # warning "Missing logic"
  }
  
  uint8_t kinetis_spi2status(FAR struct spi_dev_s *dev, uint32_t devid)
  {
  # warning "Missing logic"
    return SPI_STATUS_PRESENT;
  }
  #endif
  
  #endif /* CONFIG_KINETIS_SPI0 || CONFIG_KINETIS_SPI1 || CONFIG_KINETIS_SPI2 */
  