c4e840af56
If CONFIG_SPI_STATS is enabled, the device state for all SPI controller drivers must contain the SPI stats. This space is allocated by calling Z_SPI_INIT_FN as part of the device definition; this is done automatically when using SPI_DEVICE_DT_DEFINE instead of DEVICE_DT_DEFINE. If space for statistics is not properly allocated but CONFIG_SPI_STATS is enabled, an unexpected write to memory outside of the stats region may occur on a SPI transfer. This commit uses SPI_DEVICE_DT_DEFINE or SPI_DEVICE_DT_INST_DEFINE for all in-tree SPI controller drivers. Signed-off-by: Dane Wagner <dane.wagner@gmail.com>
59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/*
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* Copyright (c) 2021, Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/*
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* This is not a real SPI driver. It is used to instantiate struct
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* devices for the "vnd,spi" devicetree compatible used in test code.
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*/
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#include <zephyr/kernel.h>
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#include <zephyr/drivers/spi.h>
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#include <zephyr/drivers/spi/rtio.h>
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#define DT_DRV_COMPAT vnd_spi
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static int vnd_spi_transceive(const struct device *dev,
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const struct spi_config *spi_cfg,
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const struct spi_buf_set *tx_bufs,
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const struct spi_buf_set *rx_bufs)
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{
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return -ENOTSUP;
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}
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#ifdef CONFIG_SPI_ASYNC
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static int vnd_spi_transceive_async(const struct device *dev,
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const struct spi_config *spi_cfg,
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const struct spi_buf_set *tx_bufs,
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const struct spi_buf_set *rx_bufs,
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spi_callback_t cb,
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void *userdata)
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{
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return -ENOTSUP;
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}
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#endif
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static int vnd_spi_release(const struct device *dev,
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const struct spi_config *spi_cfg)
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{
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return -ENOTSUP;
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}
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static DEVICE_API(spi, vnd_spi_api) = {
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.transceive = vnd_spi_transceive,
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#ifdef CONFIG_SPI_ASYNC
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.transceive_async = vnd_spi_transceive_async,
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#endif
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#ifdef CONFIG_SPI_RTIO
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.iodev_submit = spi_rtio_iodev_default_submit,
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#endif
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.release = vnd_spi_release,
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};
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#define VND_SPI_INIT(n) \
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SPI_DEVICE_DT_INST_DEFINE(n, NULL, NULL, NULL, NULL, POST_KERNEL, \
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CONFIG_SPI_INIT_PRIORITY, &vnd_spi_api);
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DT_INST_FOREACH_STATUS_OKAY(VND_SPI_INIT)
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