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modules: fatfs: volume strings from DTS

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Instead of relying on a hardcoded list of valid strings, automatically
create a perfectly sized array of disk names from devicetree.

Signed-off-by: Jordan Yates <jordan@embeint.com>
This commit is contained in:
Jordan Yates 2024-07-13 18:02:49 +10:00 • committed by Benjamin Cabé
commit befb464d6e
1 changed files with 15 additions and 5 deletions
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20
modules/fatfs/zephyr_fatfs_config.h
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@ -8,6 +8,8 @@
#error "Configuration version mismatch"
#endif
#include <zephyr/devicetree.h>
/*
* Overrides of FF_ options from ffconf.h
*/
@ -100,13 +102,21 @@
#define FF_STR_VOLUME_ID 1
/* By default FF_STR_VOLUME_ID in ffconf.h is 0, which means that
* FF_VOLUME_STRS is not used. Zephyr uses FF_VOLUME_STRS, which
* by default holds 8 possible strings representing mount points,
* and FF_VOLUMES needs to reflect that, which means that dolt
* value of 1 is overridden here with 8.
* FF_VOLUME_STRS is not used. Zephyr uses FF_VOLUME_STRS.
* The array of volume strings is automatically generated from devicetree.
*/
#define _FF_DISK_NAME(node) DT_PROP(node, disk_name),
#undef FF_VOLUME_STRS
#define FF_VOLUME_STRS \
DT_FOREACH_STATUS_OKAY(zephyr_flash_disk, _FF_DISK_NAME) \
DT_FOREACH_STATUS_OKAY(zephyr_ram_disk, _FF_DISK_NAME) \
DT_FOREACH_STATUS_OKAY(zephyr_sdmmc_disk, _FF_DISK_NAME) \
DT_FOREACH_STATUS_OKAY(st_stm32_sdmmc, _FF_DISK_NAME)
#undef FF_VOLUMES
#define FF_VOLUMES 8
#define FF_VOLUMES NUM_VA_ARGS_LESS_1(FF_VOLUME_STRS _)
#if defined(CONFIG_FS_FATFS_EXTRA_NATIVE_API)
#undef FF_USE_LABEL