From 323a73adc9a1bf2de43fe03bdd9c3038ce7c2784 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Tue, 10 Jul 2018 11:48:08 +0200 Subject: [PATCH] mtd: nand: add new enum for storing ECC algorithm MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Our nand_ecc_modes_t is already a bit abused by value NAND_ECC_SOFT_BCH. This enum should store ECC mode only and putting algorithm details there is a bad idea. It would result in too many values impossible to support in a sane way. To solve this problem let's add a new enum. We'll have to modify all drivers to set it properly but once it's done it'll be possible to drop NAND_ECC_SOFT_BCH. That will result in a cleaner design and more possibilities like setting ECC algorithm for hardware ECC mode. Signed-off-by: Rafał Miłecki Signed-off-by: Boris Brezillon [Linux commit: b0fcd8ab7b3c89b5da7fff5224d06ed73e7a33cc] [Philippe Reynes: adapt code to u-boot] Signed-off-by: Philippe Reynes --- include/linux/mtd/rawnand.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h index cdad7b8..9f5dc81 100644 --- a/include/linux/mtd/rawnand.h +++ b/include/linux/mtd/rawnand.h @@ -143,6 +143,12 @@ typedef enum { NAND_ECC_SOFT_BCH, } nand_ecc_modes_t; +enum nand_ecc_algo { + NAND_ECC_UNKNOWN, + NAND_ECC_HAMMING, + NAND_ECC_BCH, +}; + /* * Constants for Hardware ECC */ @@ -533,6 +539,7 @@ static const struct nand_ecc_caps __name = { \ /** * struct nand_ecc_ctrl - Control structure for ECC * @mode: ECC mode + * @algo: ECC algorithm * @steps: number of ECC steps per page * @size: data bytes per ECC step * @bytes: ECC bytes per step @@ -583,6 +590,7 @@ static const struct nand_ecc_caps __name = { \ */ struct nand_ecc_ctrl { nand_ecc_modes_t mode; + enum nand_ecc_algo algo; int steps; int size; int bytes;