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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* SPI driver for spi memory devices
*/
/*
* 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 _LIBCHIP_SPI_MEMDRV_H
#define _LIBCHIP_SPI_MEMDRV_H
#include <rtems/libi2c.h>
#ifdef __cplusplus
extern "C" {
#endif
/*=========================================================================*\
| Function: |
\*-------------------------------------------------------------------------*/
rtems_status_code spi_memdrv_write
(
/*-------------------------------------------------------------------------*\
| Purpose: |
| write a block of data to memory |
+---------------------------------------------------------------------------+
| Input Parameters: |
\*-------------------------------------------------------------------------*/
rtems_device_major_number major, /* major device number */
rtems_device_major_number minor, /* minor device number */
void *arg /* ptr to write argument struct */
);
/*-------------------------------------------------------------------------*\
| Return Value: |
| o = ok or error code |
\*=========================================================================*/
/*=========================================================================*\
| Function: |
\*-------------------------------------------------------------------------*/
rtems_status_code spi_memdrv_read
(
/*-------------------------------------------------------------------------*\
| Purpose: |
| read a block of data from memory |
+---------------------------------------------------------------------------+
| Input Parameters: |
\*-------------------------------------------------------------------------*/
rtems_device_major_number major, /* major device number */
rtems_device_major_number minor, /* minor device number */
void *arg /* ptr to read argument struct */
);
/*-------------------------------------------------------------------------*\
| Return Value: |
| o = ok or error code |
\*=========================================================================*/
typedef struct {
uint32_t baudrate; /* tfr rate, bits per second */
bool erase_before_program;
uint32_t empty_state; /* value of erased cells */
uint32_t page_size; /* programming page size in byte */
uint32_t sector_size; /* erase sector size in byte */
uint32_t mem_size; /* total capacity in byte */
} spi_memdrv_param_t;
typedef struct {
rtems_libi2c_drv_t libi2c_drv_entry; /* general i2c/spi params */
spi_memdrv_param_t spi_memdrv_param; /* private parameters */
} spi_memdrv_t;
extern rtems_driver_address_table spi_memdrv_rw_ops;
extern rtems_driver_address_table spi_memdrv_ro_ops;
#ifdef __cplusplus
}
#endif
#endif /* _LIBCHIP_SPI_MEMDRV_H */
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