rtio.h

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/*
 * Copyright (c) 2024 Croxel, Inc.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_DRIVERS_SPI_RTIO_H_
#define ZEPHYR_DRIVERS_SPI_RTIO_H_
 
#include <zephyr/kernel.h>
#include <zephyr/drivers/spi.h>
#include <zephyr/rtio/rtio.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
struct spi_rtio {
        struct k_spinlock lock;
        struct rtio *r;
        struct mpsc io_q;
        struct rtio_iodev iodev;
        struct rtio_iodev_sqe *txn_head;
        struct rtio_iodev_sqe *txn_curr;
        struct spi_dt_spec dt_spec;
};
 
#define SPI_RTIO_DEFINE(_name, _sq_sz, _cq_sz)                                 \
        RTIO_DEFINE(CONCAT(_name, _r), _sq_sz, _cq_sz);                        \
        static struct spi_rtio _name = {                                       \
                .r = &CONCAT(_name, _r),                                       \
        };
 
int spi_rtio_copy(struct rtio *r,
                  struct rtio_iodev *iodev,
                  const struct spi_buf_set *tx_bufs,
                  const struct spi_buf_set *rx_bufs,
                  struct rtio_sqe **last_sqe);
 
void spi_rtio_init(struct spi_rtio *ctx, const struct device *dev);
 
bool spi_rtio_complete(struct spi_rtio *ctx, int status);
 
bool spi_rtio_submit(struct spi_rtio *ctx, struct rtio_iodev_sqe *iodev_sqe);
 
int spi_rtio_transceive(struct spi_rtio *ctx,
                        const struct spi_config *config,
                        const struct spi_buf_set *tx_bufs,
                        const struct spi_buf_set *rx_bufs);
 
void spi_rtio_iodev_default_submit(const struct device *dev,
                                   struct rtio_iodev_sqe *iodev_sqe);
 
#ifdef __cplusplus
}
#endif
 
#endif /* ZEPHYR_DRIVERS_SPI_RTIO_H_ */