forked from Imagelibrary/rtems
15f16def12
This driver uses the generic spi-gpio driver to implement one based on the i.MX* GPIO API.
89 lines
2.5 KiB
C
89 lines
2.5 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/**
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* @file
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*
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* @ingroup RTEMSDeviceIMXSPIGPIO
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*
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* @brief This header file provides the interfaces of
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* @ref RTEMSDeviceIMXSPIGPIO.
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*/
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/*
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* Copyright (C) 2024 embedded brains GmbH & Co. KG
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _RTEMS_DEV_SPI_IMX_SPI_GPIO_H
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#define _RTEMS_DEV_SPI_IMX_SPI_GPIO_H
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#include <rtems.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/**
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* @defgroup RTEMSDeviceIMXSPIGPIO
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*
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* @ingroup RTEMSDeviceSPIGPIO
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*
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* @brief A SPI bus driver that uses the i.MX/i.MXRT GPIO pins
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*
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* @{
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*/
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/**
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* @brief Register all compatible nodes from the device tree.
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*
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* Search nodes in the device tree that are compatible to 'spi-gpio' and try to
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* register the driver for them. Expects a node that looks (for example) like
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* the following:
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*
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* ```
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* gpiospi: spi {
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* status = "okay";
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* compatible = "spi-gpio";
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* #address-cells = <0x1>;
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* #size-cells = <0x0>;
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*
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* sck-gpios = <&gpio2 27 0>;
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* miso-gpios = <&gpio2 25 0>;
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* mosi-gpios = <&gpio4 14 0>;
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* cs-gpios = <&gpio4 10 1>;
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* num-chipselects = <1>;
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*
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* rtems,path = "/dev/gpiospi";
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* };
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* ```
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*/
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rtems_status_code imx_spi_gpio_init(void);
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/** @} */
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* _RTEMS_DEV_SPI_IMX_SPI_GPIO_H */
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