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fs/fatfs: Add CONFIG_FS_FATFS_MIN_SS

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The Kconfig option allows to set minimum expected sector size
to be supported by FAT fs driver.
When this value differs from CONFIG_FS_FATFS_MAX_SS the driver
will query device for actual sector size, expecting different
sector sizes for different device. When CONFIG_FS_FATFS_MIN_SS
and CONFIG_FS_FATFS_MAX_SS are the same, then there is slight
reduction if FAT driver size, as the query logic is removed
and CONFIG_FS_FATFS_MAX_SS is used for all devices.

Signed-off-by: Dominik Ermel <dominik.ermel@nordicsemi.no>
This commit is contained in:
Dominik Ermel 2022-11-24 13:15:10 +00:00 • committed by Carles Cufí
commit 043cea12e5
2 changed files with 19 additions and 0 deletions
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5
modules/fatfs/zephyr_fatfs_config.h
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@ -51,6 +51,11 @@
#define FF_MAX_LFN CONFIG_FS_FATFS_MAX_LFN
#endif /* defined(CONFIG_FS_FATFS_MAX_LFN) */
#if defined(CONFIG_FS_FATFS_MIN_SS)
#undef FF_MIN_SS
#define FF_MIN_SS CONFIG_FS_FATFS_MIN_SS
#endif /* defined(CONFIG_FS_FATFS_MIN_SS) */
#if defined(CONFIG_FS_FATFS_MAX_SS)
#undef FF_MAX_SS
#define FF_MAX_SS CONFIG_FS_FATFS_MAX_SS