diff --git a/arch/arm/src/stm32f7/stm32_spi.h b/arch/arm/src/stm32f7/stm32_spi.h new file mode 100644 index 00000000000..2d606d2f45c --- /dev/null +++ b/arch/arm/src/stm32f7/stm32_spi.h @@ -0,0 +1,208 @@ +/************************************************************************************ + * arch/arm/src/stm32f7/stm32_spi.h + * + * Copyright (C) 2016 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * 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. + * + ************************************************************************************/ + +#ifndef __ARCH_ARM_STC_STM32F7_STM32_SPI_H +#define __ARCH_ARM_STC_STM32F7_STM32_SPI_H + +/************************************************************************************ + * Included Files + ************************************************************************************/ + +#include + +#include + +#include "chip.h" +//#include "chip/stm32_spi.h" + +/************************************************************************************ + * Public Functions + ************************************************************************************/ + +#ifndef __ASSEMBLY__ + +#undef EXTERN +#if defined(__cplusplus) +#define EXTERN extern "C" +extern "C" +{ +#else +#define EXTERN extern +#endif + +struct spi_dev_s; /* Forward reference */ +enum spi_dev_e; /* Forward reference */ + +/************************************************************************************ + * Name: stm32_spibus_initialize + * + * Description: + * Initialize the selected SPI bus + * + * Input Parameter: + * bus number (for hardware that has mutiple SPI interfaces) + * + * Returned Value: + * Valid SPI device structure reference on succcess; a NULL on failure + * + ************************************************************************************/ + +FAR struct spi_dev_s *stm32_spibus_initialize(int bus); + +/************************************************************************************ + * Name: stm32_spi1/2/...select and stm32_spi1/2/...status + * + * Description: + * The external functions, stm32_spi1/2/...select, stm32_spi1/2/...status, and + * stm32_spi1/2/...cmddata must be provided by board-specific logic. These 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 stm32_spibus_initialize()) are provided by common STM32 logic. To use this + * common SPI logic on your board: + * + * 1. Provide logic in stm32_boardinitialize() to configure SPI chip select + * pins. + * 2. Provide stm32_spi1/2/...select() and stm32_spi1/2/...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. + * 3. If CONFIG_SPI_CMDDATA is defined in your NuttX configuration file, then + * provide stm32_spi1/2/...cmddata() functions in your board-specific logic. + * These functions will perform cmd/data selection operations using GPIOs in the + * way your board is configured. + * 4. Add a calls to stm32_spibus_initialize() in your low level application + * initialization logic + * 5. The handle returned by stm32_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_STM32_SPI1 +void stm32_spi1select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected); +uint8_t stm32_spi1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid); +int stm32_spi1cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd); +#endif + +#ifdef CONFIG_STM32_SPI2 +void stm32_spi2select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected); +uint8_t stm32_spi2status(FAR struct spi_dev_s *dev, enum spi_dev_e devid); +int stm32_spi2cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd); +#endif + +#ifdef CONFIG_STM32_SPI3 +void stm32_spi3select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected); +uint8_t stm32_spi3status(FAR struct spi_dev_s *dev, enum spi_dev_e devid); +int stm32_spi3cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd); +#endif + +#ifdef CONFIG_STM32_SPI4 +void stm32_spi4select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected); +uint8_t stm32_spi4status(FAR struct spi_dev_s *dev, enum spi_dev_e devid); +int stm32_spi4cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd); +#endif + +#ifdef CONFIG_STM32_SPI5 +void stm32_spi5select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected); +uint8_t stm32_spi5status(FAR struct spi_dev_s *dev, enum spi_dev_e devid); +int stm32_spi5cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd); +#endif + +#ifdef CONFIG_STM32_SPI6 +void stm32_spi6select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected); +uint8_t stm32_spi6status(FAR struct spi_dev_s *dev, enum spi_dev_e devid); +int stm32_spi6cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd); +#endif + +/************************************************************************************ + * Name: stm32_spi1/2/...register + * + * Description: + * If the board supports a card detect callback to inform the SPI-based MMC/SD + * driver when an SD card is inserted or removed, then CONFIG_SPI_CALLBACK should + * be defined and the following function(s) must be implemented. These functions + * implements the registercallback method of the SPI interface (see + * include/nuttx/spi/spi.h for details) + * + * Input Parameters: + * dev - Device-specific state data + * callback - The function to call on the media change + * arg - A caller provided value to return with the callback + * + * Returned Value: + * 0 on success; negated errno on failure. + * + ****************************************************************************/ + +#ifdef CONFIG_SPI_CALLBACK +#ifdef CONFIG_STM32_SPI1 +int stm32_spi1register(FAR struct spi_dev_s *dev, spi_mediachange_t callback, + FAR void *arg); +#endif + +#ifdef CONFIG_STM32_SPI2 +int stm32_spi2register(FAR struct spi_dev_s *dev, spi_mediachange_t callback, + FAR void *arg); +#endif + +#ifdef CONFIG_STM32_SPI3 +int stm32_spi3register(FAR struct spi_dev_s *dev, spi_mediachange_t callback, + FAR void *arg); +#endif + +#ifdef CONFIG_STM32_SPI4 +int stm32_spi4register(FAR struct spi_dev_s *dev, spi_mediachange_t callback, + FAR void *arg); +#endif + +#ifdef CONFIG_STM32_SPI5 +int stm32_spi5register(FAR struct spi_dev_s *dev, spi_mediachange_t callback, + FAR void *arg); +#endif + +#ifdef CONFIG_STM32_SPI6 +int stm32_spi6register(FAR struct spi_dev_s *dev, spi_mediachange_t callback, + FAR void *arg); +#endif +#endif + +#undef EXTERN +#if defined(__cplusplus) +} +#endif + +#endif /* __ASSEMBLY__ */ +#endif /* __ARCH_ARM_STC_STM32F7_STM32_SPI_H */ +