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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup m68k_m360spi
*
* @brief this file contains the MC68360 SPI driver declarations
*/
/*
* 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.
*/
/**
* @defgroup m68k_m360spi M360_SPIDRV Support
*
* @ingroup RTEMSBSPsM68kGen68360
*
* @brief M360_SPIDRV Support Package
*/
#ifndef _M360_SPIDRV_H
#define _M360_SPIDRV_H
#include <rtems/m68k/m68360.h>
#include <rtems/libi2c.h>
#include <rtems/irq.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef struct m360_spi_softc {
int initialized;
rtems_id irq_sema_id;
rtems_isr_entry old_handler;
m360BufferDescriptor_t *rx_bd;
m360BufferDescriptor_t *tx_bd;
} m360_spi_softc_t ;
typedef struct {
rtems_libi2c_bus_t bus_desc;
m360_spi_softc_t softc;
} m360_spi_desc_t;
/*=========================================================================*\
| Function: |
\*-------------------------------------------------------------------------*/
rtems_status_code m360_spi_init
(
/*-------------------------------------------------------------------------*\
| Purpose: |
| initialize the driver |
+---------------------------------------------------------------------------+
| Input Parameters: |
\*-------------------------------------------------------------------------*/
rtems_libi2c_bus_t *bh /* bus specifier structure */
);
/*-------------------------------------------------------------------------*\
| Return Value: |
| o = ok or error code |
\*=========================================================================*/
/*=========================================================================*\
| Function: |
\*-------------------------------------------------------------------------*/
int m360_spi_read_bytes
(
/*-------------------------------------------------------------------------*\
| Purpose: |
| receive some bytes from SPI device |
+---------------------------------------------------------------------------+
| Input Parameters: |
\*-------------------------------------------------------------------------*/
rtems_libi2c_bus_t *bh, /* bus specifier structure */
unsigned char *buf, /* buffer to store bytes */
int len /* number of bytes to receive */
);
/*-------------------------------------------------------------------------*\
| Return Value: |
| number of bytes received or (negative) error code |
\*=========================================================================*/
/*=========================================================================*\
| Function: |
\*-------------------------------------------------------------------------*/
int m360_spi_write_bytes
(
/*-------------------------------------------------------------------------*\
| Purpose: |
| send some bytes to SPI device |
+---------------------------------------------------------------------------+
| Input Parameters: |
\*-------------------------------------------------------------------------*/
rtems_libi2c_bus_t *bh, /* bus specifier structure */
unsigned char *buf, /* buffer to send */
int len /* number of bytes to send */
);
/*-------------------------------------------------------------------------*\
| Return Value: |
| number of bytes sent or (negative) error code |
\*=========================================================================*/
/*=========================================================================*\
| Function: |
\*-------------------------------------------------------------------------*/
rtems_status_code m360_spi_set_tfr_mode
(
/*-------------------------------------------------------------------------*\
| Purpose: |
| set SPI to desired baudrate/clock mode/character mode |
+---------------------------------------------------------------------------+
| Input Parameters: |
\*-------------------------------------------------------------------------*/
rtems_libi2c_bus_t *bh, /* bus specifier structure */
const rtems_libi2c_tfr_mode_t *tfr_mode /* transfer mode info */
);
/*-------------------------------------------------------------------------*\
| Return Value: |
| rtems_status_code |
\*=========================================================================*/
/*=========================================================================*\
| Function: |
\*-------------------------------------------------------------------------*/
int m360_spi_ioctl
(
/*-------------------------------------------------------------------------*\
| Purpose: |
| perform selected ioctl function for SPI |
+---------------------------------------------------------------------------+
| Input Parameters: |
\*-------------------------------------------------------------------------*/
rtems_libi2c_bus_t *bh, /* bus specifier structure */
int cmd, /* ioctl command code */
void *arg /* additional argument array */
);
/*-------------------------------------------------------------------------*\
| Return Value: |
| rtems_status_code |
\*=========================================================================*/
#ifdef __cplusplus
}
#endif
#endif /* _M360_SPIDRV_H */
|
