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The `mtd_default` module defines `MTD_NUMOF` if not existing based on the `MTD_*` defines which are usually set to the corresponding MTD device pointer variables `mtd*`. However, these MTD device pointer variables are not always made known by external variable declarations. An example are SD Card Interfaces which are defined via the `mtd_sdcard_default` module. As a consequence, an application that uses `mtd_default` has still to be modified. Therefore, `mtd_default` also declares up to 6 `mtd*` MTD device pointer variables.
132 lines
2.6 KiB
C
132 lines
2.6 KiB
C
/*
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* Copyright (C) 2023 ML!PA Consulting GmbH
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup drivers_mtd
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* @{
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* @brief Default MTD device configuration
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*
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* Helpers for generic MTD use.
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*
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* @author Benjamin Valentin <benjamin.valentin@ml-pa.com>
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*/
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#ifndef MTD_DEFAULT_H
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#define MTD_DEFAULT_H
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#include "board.h"
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#include "modules.h"
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#include "mtd.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if defined(MODULE_MTD_SDCARD_DEFAULT)
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#include "mtd_sdcard.h"
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#endif
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#if defined(MODULE_MTD_EMULATED)
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#include "mtd_emulated.h"
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#endif
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#if !defined(MTD_NUMOF) && !DOXYGEN
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#if defined(MTD_3)
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#define MTD_BOARD_NUMOF 4
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#elif defined(MTD_2)
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#define MTD_BOARD_NUMOF 3
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#elif defined(MTD_1)
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#define MTD_BOARD_NUMOF 2
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#elif defined(MTD_0)
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#define MTD_BOARD_NUMOF 1
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#else
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#define MTD_BOARD_NUMOF 0
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#endif
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#define MTD_SDCARD_NUMOF IS_USED(MODULE_MTD_SDCARD_DEFAULT)
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#define MTD_EMULATED_NUMOF IS_USED(MODULE_MTD_EMULATED)
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/**
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* @brief Number of MTD devices
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*/
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#define MTD_NUMOF (MTD_BOARD_NUMOF + MTD_SDCARD_NUMOF + MTD_EMULATED_NUMOF)
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#endif /* !defined(MTD_NUMOF) && !DOXYGEN */
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#if !DOXYGEN
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/**
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* @brief Declare `mtd*` according to the number of MTD devices
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*/
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#if MTD_NUMOF > 0
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extern mtd_dev_t *mtd0;
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#endif
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#if MTD_NUMOF > 1
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extern mtd_dev_t *mtd1;
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#endif
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#if MTD_NUMOF > 2
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extern mtd_dev_t *mtd2;
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#endif
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#if MTD_NUMOF > 3
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extern mtd_dev_t *mtd3;
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#endif
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#if MTD_NUMOF > 4
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extern mtd_dev_t *mtd4;
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#endif
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#if MTD_NUMOF > 5
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extern mtd_dev_t *mtd5;
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#endif
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#endif /* !DOXYGEN */
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#if defined(MODULE_MTD_SDCARD_DEFAULT)
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extern mtd_sdcard_t mtd_sdcard_dev0;
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#endif
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#if defined(MODULE_MTD_EMULATED)
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extern mtd_emulated_t mtd_emulated_dev0;
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#endif
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/**
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* @brief Get the default MTD device by index
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*
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* @param[in] idx Index of the MTD device
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*
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* @return MTD_0 for @p idx 0 and so on
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* NULL if no MTD device exists for the given index
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*/
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static inline mtd_dev_t *mtd_default_get_dev(unsigned idx)
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{
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switch (idx) {
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#if MTD_BOARD_NUMOF > 0
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case 0: return MTD_0;
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#endif
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#if MTD_BOARD_NUMOF > 1
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case 1: return MTD_1;
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#endif
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#if MTD_BOARD_NUMOF > 2
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case 2: return MTD_2;
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#endif
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#if MTD_BOARD_NUMOF > 3
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case 3: return MTD_3;
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#endif
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#if MTD_SDCARD_NUMOF > 0
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case MTD_BOARD_NUMOF: return (mtd_dev_t *)&mtd_sdcard_dev0;
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#endif
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#if MTD_EMULATED_NUMOF > 0
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case MTD_BOARD_NUMOF + MTD_SDCARD_NUMOF: return (mtd_dev_t *)&mtd_emulated_dev0;
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#endif
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}
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return NULL;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* MTD_DEFAULT_H */
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/** @} */
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