forked from Imagelibrary/rtems
84 lines
3.7 KiB
C
84 lines
3.7 KiB
C
/*
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* SPI driver for spi memory devices
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*/
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/*
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* Copyright (c) 2008 embedded brains GmbH. All rights reserved.
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#ifndef _LIBCHIP_SPI_MEMDRV_H
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#define _LIBCHIP_SPI_MEMDRV_H
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#include <rtems/libi2c.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*=========================================================================*\
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| Function: |
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\*-------------------------------------------------------------------------*/
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rtems_status_code spi_memdrv_write
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(
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/*-------------------------------------------------------------------------*\
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| Purpose: |
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| write a block of data to memory |
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+---------------------------------------------------------------------------+
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| Input Parameters: |
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\*-------------------------------------------------------------------------*/
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rtems_device_major_number major, /* major device number */
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rtems_device_major_number minor, /* minor device number */
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void *arg /* ptr to write argument struct */
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);
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/*-------------------------------------------------------------------------*\
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| Return Value: |
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| o = ok or error code |
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\*=========================================================================*/
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/*=========================================================================*\
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| Function: |
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\*-------------------------------------------------------------------------*/
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rtems_status_code spi_memdrv_read
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(
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/*-------------------------------------------------------------------------*\
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| Purpose: |
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| read a block of data from memory |
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+---------------------------------------------------------------------------+
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| Input Parameters: |
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\*-------------------------------------------------------------------------*/
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rtems_device_major_number major, /* major device number */
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rtems_device_major_number minor, /* minor device number */
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void *arg /* ptr to read argument struct */
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);
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/*-------------------------------------------------------------------------*\
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| Return Value: |
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| o = ok or error code |
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\*=========================================================================*/
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typedef struct {
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uint32_t baudrate; /* tfr rate, bits per second */
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bool erase_before_program;
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uint32_t empty_state; /* value of erased cells */
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uint32_t page_size; /* programming page size in byte */
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uint32_t sector_size; /* erase sector size in byte */
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uint32_t mem_size; /* total capacity in byte */
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} spi_memdrv_param_t;
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typedef struct {
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rtems_libi2c_drv_t libi2c_drv_entry; /* general i2c/spi params */
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spi_memdrv_param_t spi_memdrv_param; /* private parameters */
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} spi_memdrv_t;
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extern rtems_driver_address_table spi_memdrv_rw_ops;
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extern rtems_driver_address_table spi_memdrv_ro_ops;
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#ifdef __cplusplus
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}
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#endif
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#endif /* _LIBCHIP_SPI_MEMDRV_H */
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