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mtd: nand: ecc-bch: Move BCH code to the generic NAND layer

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BCH ECC code might be later re-used by the SPI NAND layer.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20200929230124.31491-3-miquel.raynal@bootlin.com
This commit is contained in:
Miquel Raynal 2020-09-30 01:01:06 +02:00
parent 51e7bf4534
commit cdbe8df5e2
9 changed files with 19 additions and 18 deletions
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11
drivers/mtd/nand/Kconfig
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@ -15,6 +15,17 @@ config MTD_NAND_ECC
bool
depends on MTD_NAND_CORE
config MTD_NAND_ECC_SW_BCH
bool "Software BCH ECC engine"
select BCH
select MTD_NAND_ECC
default n
help
This enables support for software BCH error correction. Binary BCH
codes are more powerful and cpu intensive than traditional Hamming
ECC codes. They are used with NAND devices requiring more than 1 bit
of error correction.
endmenu
endmenu

1
drivers/mtd/nand/Makefile
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@ -8,3 +8,4 @@ obj-y += raw/
obj-y += spi/
nandcore-$(CONFIG_MTD_NAND_ECC) += ecc.o
nandcore-$(CONFIG_MTD_NAND_ECC_SW_BCH) += ecc-sw-bch.o

2
drivers/mtd/nand/raw/nand_bch.c → drivers/mtd/nand/ecc-sw-bch.c
View File

@ -13,7 +13,7 @@
#include <linux/bitops.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/rawnand.h>
#include <linux/mtd/nand_bch.h>
#include <linux/mtd/nand-ecc-sw-bch.h>
#include <linux/bch.h>
/**

10
drivers/mtd/nand/raw/Kconfig
View File

@ -22,16 +22,6 @@ menuconfig MTD_RAW_NAND
if MTD_RAW_NAND
config MTD_NAND_ECC_SW_BCH
bool "Support software BCH ECC"
select BCH
default n
help
This enables support for software BCH error correction. Binary BCH
codes are more powerful and cpu intensive than traditional Hamming
ECC codes. They are used with NAND devices requiring more than 1 bit
of error correction.
comment "Raw/parallel NAND flash controllers"
config MTD_NAND_DENALI

1
drivers/mtd/nand/raw/Makefile
View File

@ -2,7 +2,6 @@
obj-$(CONFIG_MTD_RAW_NAND) += nand.o
obj-$(CONFIG_MTD_NAND_ECC_SW_HAMMING) += nand_ecc.o
nand-$(CONFIG_MTD_NAND_ECC_SW_BCH) += nand_bch.o
obj-$(CONFIG_MTD_SM_COMMON) += sm_common.o
obj-$(CONFIG_MTD_NAND_CAFE) += cafe_nand.o

2
drivers/mtd/nand/raw/nand_base.c
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@ -36,7 +36,7 @@
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/nand_ecc.h>
#include <linux/mtd/nand_bch.h>
#include <linux/mtd/nand-ecc-sw-bch.h>
#include <linux/interrupt.h>
#include <linux/bitops.h>
#include <linux/io.h>

2
drivers/mtd/nand/raw/nandsim.c
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@ -23,7 +23,7 @@
#include <linux/string.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/rawnand.h>
#include <linux/mtd/nand_bch.h>
#include <linux/mtd/nand-ecc-sw-bch.h>
#include <linux/mtd/partitions.h>
#include <linux/delay.h>
#include <linux/list.h>

2
drivers/mtd/nand/raw/omap2.c
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@ -23,7 +23,7 @@
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/mtd/nand_bch.h>
#include <linux/mtd/nand-ecc-sw-bch.h>
#include <linux/platform_data/elm.h>
#include <linux/omap-gpmc.h>

6
include/linux/mtd/nand_bch.h → include/linux/mtd/nand-ecc-sw-bch.h
View File

@ -5,8 +5,8 @@
* This file is the header for the NAND BCH ECC implementation.
*/
#ifndef __MTD_NAND_BCH_H__
#define __MTD_NAND_BCH_H__
#ifndef __MTD_NAND_ECC_SW_BCH_H__
#define __MTD_NAND_ECC_SW_BCH_H__
struct mtd_info;
struct nand_chip;
@ -63,4 +63,4 @@ static inline void nand_bch_free(struct nand_bch_control *nbc) {}
#endif /* CONFIG_MTD_NAND_ECC_SW_BCH */
#endif /* __MTD_NAND_BCH_H__ */
#endif /* __MTD_NAND_ECC_SW_BCH_H__ */