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drivers/mtd_sdcard: implement erase_sector()

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This commit is contained in:
Benjamin Valentin 2022-02-07 11:40:27 +01:00
parent ac9de922c5
commit 91ca757b9a
2 changed files with 33 additions and 13 deletions
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3
drivers/include/mtd_sdcard.h
View File

@ -55,7 +55,8 @@ typedef struct {
* the sector first.
* Attention: an erase call will therefore NOT touch the content,
* so enable this feature to ensure overriding the data.
* This feature is currently not supported.
*
* This feature requires the `mtd_write_page` module.
*/
#ifdef DOXYGEN
#define CONFIG_MTD_SDCARD_ERASE

43
drivers/mtd_sdcard/mtd_sdcard.c
View File

@ -138,21 +138,40 @@ static int mtd_sdcard_write_page(mtd_dev_t *dev, const void *buff, uint32_t page
return size;
}
static int mtd_sdcard_erase(mtd_dev_t *dev,
uint32_t addr,
uint32_t size)
static int mtd_sdcard_erase_sector(mtd_dev_t *dev, uint32_t sector, uint32_t count)
{
DEBUG("mtd_sdcard_erase: addr:%" PRIu32 " size:%" PRIu32 "\n", addr, size);
(void)dev;
(void)addr;
(void)size;
#if IS_ACTIVE(CONFIG_MTD_SDCARD_ERASE) && IS_USED(MODULE_MTD_WRITE_PAGE)
mtd_sdcard_t *mtd_sd = (mtd_sdcard_t*)dev;
if (!IS_ACTIVE(CONFIG_MTD_SDCARD_ERASE)) {
return 0;
DEBUG("mtd_sdcard_erase_sector: sector: %" PRIu32 " count: %" PRIu32 "\n",
sector, count);
if (dev->work_area == NULL) {
DEBUG("mtd_sdcard_erase_sector: no work area\n");
return -ENOTSUP;
}
else {
return -ENOTSUP; /* explicit erase currently not supported */
memset(dev->work_area, 0, SD_HC_BLOCK_SIZE);
while (count) {
sd_rw_response_t err;
sdcard_spi_write_blocks(mtd_sd->sd_card, sector,
dev->work_area, SD_HC_BLOCK_SIZE,
1, &err);
if (err != SD_RW_OK) {
printf("err: %d\n", err);
return -EIO;
}
--count;
++sector;
}
#else
(void)dev;
(void)sector;
(void)count;
if (IS_ACTIVE(CONFIG_MTD_SDCARD_ERASE)) {
return -ENOTSUP;
}
#endif
return 0;
}
static int mtd_sdcard_power(mtd_dev_t *dev, enum mtd_power_state power)
@ -199,6 +218,6 @@ const mtd_desc_t mtd_sdcard_driver = {
.read_page = mtd_sdcard_read_page,
.write = mtd_sdcard_write,
.write_page = mtd_sdcard_write_page,
.erase = mtd_sdcard_erase,
.erase_sector = mtd_sdcard_erase_sector,
.power = mtd_sdcard_power,
};