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mtd: nand: Add a helper to retrieve the number of ECC bytes per step

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This operation is very common and deserves a helper. It of course only
works after the ECC engine initialization.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Tested-by: Adam Ford <aford173@gmail.com> #logicpd Torpedo
Link: https://lore.kernel.org/linux-mtd/20210127203020.9574-6-miquel.raynal@bootlin.com
This commit is contained in:
Miquel Raynal 2021-01-27 21:30:16 +01:00
parent e3554b10ba
commit ba4a40a483
1 changed files with 10 additions and 0 deletions
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10
include/linux/mtd/nand.h
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@ -597,6 +597,16 @@ nanddev_get_ecc_nsteps(struct nand_device *nand)
return nand->ecc.ctx.nsteps;
}
/**
* nanddev_get_ecc_bytes_per_step() - Extract the number of ECC bytes per step
* @nand: NAND device
*/
static inline unsigned int
nanddev_get_ecc_bytes_per_step(struct nand_device *nand)
{
return nand->ecc.ctx.total / nand->ecc.ctx.nsteps;
}
/**
* nanddev_get_ecc_requirements() - Extract the ECC requirements from a NAND
* device