Commit cdbe8df5 authored Sep 30, 2020 by Miquel Raynal

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

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

parent 51e7bf45

drivers/mtd/nand/Kconfig

+11 −0

Original line number	Diff line number	Diff line
		@@ -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

drivers/mtd/nand/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -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

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

+1 −1

Original line number	Diff line number	Diff line
		@@ -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>

		/**

drivers/mtd/nand/raw/Kconfig

+0 −10

Original line number	Diff line number	Diff line
		@@ -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

drivers/mtd/nand/raw/Makefile

+0 −1

Original line number	Diff line number	Diff line
		@@ -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