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mtd: nand: Create a helper to extract the ECC configuration 

Despite its current name, the eccreq field actually encodes both the
NAND requirements and the final ECC configuration. That works fine when
using on-die ECC since those 2 concepts match perfectly, but it starts
being a problem as soon as we use on-host ECC engines, where we're not
guaranteed to have a perfect match.

Let's hide the ECC configuration access behind a helper so we can later
split those 2 concepts.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-12-miquel.raynal@bootlin.com
This commit is contained in:
Miquel Raynal 2020-08-27 10:51:59 +02:00
parent bace41f80f
commit d193792a26
1 changed files with 10 additions and 0 deletions
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10
include/linux/mtd/nand.h
View File

@ -523,6 +523,16 @@ nanddev_get_memorg(struct nand_device *nand)
return &nand->memorg;
}
/**
* nanddev_get_ecc_conf() - Extract the ECC configuration from a NAND device
* @nand: NAND device
*/
static inline const struct nand_ecc_props *
nanddev_get_ecc_conf(struct nand_device *nand)
{
return &nand->eccreq;
}
int nanddev_init(struct nand_device *nand, const struct nand_ops *ops,
struct module *owner);
void nanddev_cleanup(struct nand_device *nand);