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mtd/nand: Add nand_raw_initialize to skip the probing

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Since not all nand devices follow ONFI spec, nand_raw_initialize could be used to skip ONFI special action

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
This commit is contained in:
Xiang Xiao 2023-05-01 02:11:22 +08:00 committed by Alin Jerpelea
parent b4814811f5
commit 7a725019bc
2 changed files with 69 additions and 31 deletions
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83
drivers/mtd/mtd_nand.c
View File

@ -817,6 +817,57 @@ static int nand_ioctl(FAR struct mtd_dev_s *dev, int cmd, unsigned long arg)
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nand_raw_initialize
*
* Description:
* Initialize NAND without probing.
*
* Input Parameters:
* raw - Lower-half, raw NAND FLASH interface
*
* Returned Value:
* A non-NULL MTD driver instance is returned on success. NULL is
* returned on any failaure.
*
****************************************************************************/
FAR struct mtd_dev_s *nand_raw_initialize(FAR struct nand_raw_s *raw)
{
FAR struct nand_dev_s *nand;
/* Allocate an NAND MTD device structure */
nand = (FAR struct nand_dev_s *)kmm_zalloc(sizeof(struct nand_dev_s));
if (!nand)
{
ferr("ERROR: Failed to allocate the NAND MTD device structure\n");
return NULL;
}
/* Initialize the NAND MTD device structure */
nand->mtd.erase = nand_erase;
nand->mtd.bread = nand_bread;
nand->mtd.bwrite = nand_bwrite;
nand->mtd.ioctl = nand_ioctl;
nand->raw = raw;
nxmutex_init(&nand->lock);
#if defined(CONFIG_MTD_NAND_BLOCKCHECK) && defined(CONFIG_DEBUG_INFO) && \
defined(CONFIG_DEBUG_FS)
/* Scan the device for bad blocks */
nand_devscan(nand);
#endif
/* Return the implementation-specific state structure as the MTD device */
return &nand->mtd;
}
/****************************************************************************
* Name: nand_initialize
*
@ -834,7 +885,6 @@ static int nand_ioctl(FAR struct mtd_dev_s *dev, int cmd, unsigned long arg)
FAR struct mtd_dev_s *nand_initialize(FAR struct nand_raw_s *raw)
{
FAR struct nand_dev_s *nand;
struct onfi_pgparam_s onfi;
int ret;
@ -926,34 +976,5 @@ FAR struct mtd_dev_s *nand_initialize(FAR struct nand_raw_s *raw)
true);
}
/* Allocate an NAND MTD device structure */
nand = (FAR struct nand_dev_s *)kmm_zalloc(sizeof(struct nand_dev_s));
if (!nand)
{
ferr("ERROR: Failed to allocate the NAND MTD device structure\n");
return NULL;
}
/* Initialize the NAND MTD device structure */
nand->mtd.erase = nand_erase;
nand->mtd.bread = nand_bread;
nand->mtd.bwrite = nand_bwrite;
nand->mtd.ioctl = nand_ioctl;
nand->raw = raw;
nxmutex_init(&nand->lock);
#if defined(CONFIG_MTD_NAND_BLOCKCHECK) && defined(CONFIG_DEBUG_INFO) && \
defined(CONFIG_DEBUG_FS)
/* Scan the device for bad blocks */
nand_devscan(nand);
#endif
/* Return the implementation-specific state structure as the MTD device */
return &nand->mtd;
return nand_raw_initialize(raw);
}

17
include/nuttx/mtd/nand.h
View File

@ -87,6 +87,23 @@ extern "C"
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: nand_raw_initialize
*
* Description:
* Initialize NAND without probing.
*
* Input Parameters:
* raw - Lower-half, raw NAND FLASH interface
*
* Returned Value:
* A non-NULL MTD driver instance is returned on success. NULL is
* returned on any failaure.
*
****************************************************************************/
FAR struct mtd_dev_s *nand_raw_initialize(FAR struct nand_raw_s *raw);
/****************************************************************************
* Name: nand_initialize
*