* arch/arm/src/mx8mp/mx8mp_ecspi.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __ARCH_ARM_SRC_MX8MP_MX8MP_ECSPI_H
#define __ARCH_ARM_SRC_MX8MP_MX8MP_ECSPI_H
* Included Files
****************************************************************************/
#include <nuttx/config.h>
* Public Data
****************************************************************************/
struct spi_dev_s;
* Public Function Prototypes
****************************************************************************/
* Name: mx8mp_spibus_initialize
*
* Description:
* Initialize the selected SPI bus
*
* Input Parameters:
* bus number (for hardware that has multiple SPI interfaces)
*
* Returned Value:
* Valid SPI device structure reference on success; a NULL on failure
*
****************************************************************************/
struct spi_dev_s *mx8mp_spibus_initialize(int bus);
* Name:
* mx8mp_spi[n]select, mx8mp_spi[n]status, and mx8mp_spi[n]cmddata
*
* Description:
* These external functions must be provided by board-specific logic.
* They are implementations of the select, status, and cmddata methods of
* the SPI interface defined by struct spi_ops_s
* (see include/nuttx/spi/spi.h). All other methods including
* mx8mp_spibus_initialize()) are provided by common Kinetis logic.
* To use this common SPI logic on your board:
*
* 1. Provide logic in mx8mp_boardinitialize() to configure SPI chip
* select pins.
* 2. Provide mx8mp_spi[n]select() and mx8mp_spi[n]status() functions
* in your board-specific logic. These functions will perform chip
* selection and status operations using GPIOs in the way your board is
* configured.
* 2. If CONFIG_SPI_CMDDATA is defined in the NuttX configuration, provide
* mx8mp_spi[n]cmddata() functions in your board-specific logic.
* These functions will perform cmd/data selection operations using
* GPIOs in the way your board is configured.
* 3. Add a call to mx8mp_spibus_initialize() in your low level
* application initialization logic
* 4. The handle returned by mx8mp_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_MX8MP_SPI1
void mx8mp_spi1_select(struct spi_dev_s *dev,
uint32_t devid, bool selected);
uint8_t mx8mp_spi1_status(struct spi_dev_s *dev, uint32_t devid);
#ifdef CONFIG_SPI_CMDDATA
int mx8mp_spi1_cmddata(struct spi_dev_s *dev, uint32_t devid, bool cmd);
#endif
#endif
#ifdef CONFIG_MX8MP_SPI2
void mx8mp_spi2_select(struct spi_dev_s *dev,
uint32_t devid, bool selected);
uint8_t mx8mp_spi2_status(struct spi_dev_s *dev, uint32_t devid);
#ifdef CONFIG_SPI_CMDDATA
int mx8mp_spi2_cmddata(struct spi_dev_s *dev, uint32_t devid, bool cmd);
#endif
#endif
#ifdef CONFIG_MX8MP_SPI3
void mx8mp_spi3_select(struct spi_dev_s *dev,
uint32_t devid, bool selected);
uint8_t mx8mp_spi3_status(struct spi_dev_s *dev, uint32_t devid);
#ifdef CONFIG_SPI_CMDDATA
int mx8mp_spi3_cmddata(struct spi_dev_s *dev, uint32_t devid, bool cmd);
#endif
#endif
#endif