Commit ba4a40a4 authored by Miquel Raynal's avatar Miquel Raynal
Browse files

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



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

Signed-off-by: default avatarMiquel 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
parent e3554b10

include/linux/mtd/nand.h

+10 −0
Original line number Diff line number Diff line
@@ -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