dspi.h

Go to the documentation of this file.

/* SPDX-License-Identifier: BSD-2-Clause */

 
/*
 * Copyright (c) 2008 embedded brains GmbH & Co. KG
 * 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.
 *
 * 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 LIBCPU_POWERPC_MPC55XX_DSPI_H
#define LIBCPU_POWERPC_MPC55XX_DSPI_H
 
#include <rtems/libi2c.h>
 
#include <mpc55xx/edma.h>
 
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
 
struct DSPI_tag;
 
typedef struct {
  edma_channel_context edma;
  rtems_id id;
} mpc55xx_dspi_edma_entry;

typedef struct {
    rtems_libi2c_bus_t bus;

    unsigned table_index;

    unsigned bus_number;

    volatile struct DSPI_tag *regs;

    bool master;

    union DSPI_PUSHR_tag push_data;

    mpc55xx_dspi_edma_entry edma_transmit;

    mpc55xx_dspi_edma_entry edma_push;

    mpc55xx_dspi_edma_entry edma_receive;

    uint32_t idle_char;

    uint32_t baud;
} mpc55xx_dspi_bus_entry;

#define MPC55XX_DSPI_NUMBER 4

extern mpc55xx_dspi_bus_entry mpc55xx_dspi_bus_table [ /* MPC55XX_DSPI_NUMBER */ ];
 
#ifdef __cplusplus
}
#endif /* __cplusplus */
 
#endif /* LIBCPU_POWERPC_MPC55XX_DSPI_H */