[PATCH v4 1/5] mtd: nand: make mtk_ecc.c a separated module

[Chuanhong Guo]

this code will be used in mediatek snfi spi-mem controller with
pipelined ECC engine.

Signed-off-by: Chuanhong Guo <gch981213 at gmail.com>
---

Change since v1:
  actually make it a module instead of a part of nandcore.o
    (ECC_MXIC probablly needs a similar fix.)

Change since v2: None
Change since v3: None
 drivers/mtd/nand/Kconfig                                   | 7 +++++++
 drivers/mtd/nand/Makefile                                  | 1 +
 drivers/mtd/nand/{raw/mtk_ecc.c => ecc-mtk.c}              | 3 +--
 drivers/mtd/nand/raw/Kconfig                               | 1 +
 drivers/mtd/nand/raw/Makefile                              | 2 +-
 drivers/mtd/nand/raw/mtk_nand.c                            | 2 +-
 .../nand/raw/mtk_ecc.h => include/linux/mtd/nand-ecc-mtk.h | 0
 7 files changed, 12 insertions(+), 4 deletions(-)
 rename drivers/mtd/nand/{raw/mtk_ecc.c => ecc-mtk.c} (99%)
 rename drivers/mtd/nand/raw/mtk_ecc.h => include/linux/mtd/nand-ecc-mtk.h (100%)

diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 9b249826ef93..2f3e02ab72ed 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -53,6 +53,13 @@ config MTD_NAND_ECC_MXIC
 	help
 	  This enables support for the hardware ECC engine from Macronix.
 
+config MTD_NAND_ECC_MEDIATEK
+	tristate "Mediatek hardware ECC engine"
+	depends on HAS_IOMEM
+	select MTD_NAND_ECC
+	help
+	  This enables support for the hardware ECC engine from Mediatek.
+
 endmenu
 
 endmenu
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index a4e6b7ae0614..19e1291ac4d5 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -2,6 +2,7 @@
 
 nandcore-objs := core.o bbt.o
 obj-$(CONFIG_MTD_NAND_CORE) += nandcore.o
+obj-$(CONFIG_MTD_NAND_ECC_MEDIATEK) += ecc-mtk.o
 
 obj-y	+= onenand/
 obj-y	+= raw/
diff --git a/drivers/mtd/nand/raw/mtk_ecc.c b/drivers/mtd/nand/ecc-mtk.c
similarity index 99%
rename from drivers/mtd/nand/raw/mtk_ecc.c
rename to drivers/mtd/nand/ecc-mtk.c
index 49ab3448b9b1..74ddaa46ba7c 100644
--- a/drivers/mtd/nand/raw/mtk_ecc.c
+++ b/drivers/mtd/nand/ecc-mtk.c
@@ -15,8 +15,7 @@
 #include <linux/of.h>
 #include <linux/of_platform.h>
 #include <linux/mutex.h>
-
-#include "mtk_ecc.h"
+#include <linux/mtd/nand-ecc-mtk.h>
 
 #define ECC_IDLE_MASK		BIT(0)
 #define ECC_IRQ_EN		BIT(0)
diff --git a/drivers/mtd/nand/raw/Kconfig b/drivers/mtd/nand/raw/Kconfig
index 9b078e78f3fa..8b6d7a515445 100644
--- a/drivers/mtd/nand/raw/Kconfig
+++ b/drivers/mtd/nand/raw/Kconfig
@@ -374,6 +374,7 @@ config MTD_NAND_QCOM
 
 config MTD_NAND_MTK
 	tristate "MTK NAND controller"
+	depends on MTD_NAND_ECC_MEDIATEK
 	depends on ARCH_MEDIATEK || COMPILE_TEST
 	depends on HAS_IOMEM
 	help
diff --git a/drivers/mtd/nand/raw/Makefile b/drivers/mtd/nand/raw/Makefile
index 88a566513c56..fa1d00120310 100644
--- a/drivers/mtd/nand/raw/Makefile
+++ b/drivers/mtd/nand/raw/Makefile
@@ -48,7 +48,7 @@ obj-$(CONFIG_MTD_NAND_SUNXI)		+= sunxi_nand.o
 obj-$(CONFIG_MTD_NAND_HISI504)	        += hisi504_nand.o
 obj-$(CONFIG_MTD_NAND_BRCMNAND)		+= brcmnand/
 obj-$(CONFIG_MTD_NAND_QCOM)		+= qcom_nandc.o
-obj-$(CONFIG_MTD_NAND_MTK)		+= mtk_ecc.o mtk_nand.o
+obj-$(CONFIG_MTD_NAND_MTK)		+= mtk_nand.o
 obj-$(CONFIG_MTD_NAND_MXIC)		+= mxic_nand.o
 obj-$(CONFIG_MTD_NAND_TEGRA)		+= tegra_nand.o
 obj-$(CONFIG_MTD_NAND_STM32_FMC2)	+= stm32_fmc2_nand.o
diff --git a/drivers/mtd/nand/raw/mtk_nand.c b/drivers/mtd/nand/raw/mtk_nand.c
index 66f04c693c87..d540454cbbdf 100644
--- a/drivers/mtd/nand/raw/mtk_nand.c
+++ b/drivers/mtd/nand/raw/mtk_nand.c
@@ -17,7 +17,7 @@
 #include <linux/iopoll.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
-#include "mtk_ecc.h"
+#include <linux/mtd/nand-ecc-mtk.h>
 
 /* NAND controller register definition */
 #define NFI_CNFG		(0x00)
diff --git a/drivers/mtd/nand/raw/mtk_ecc.h b/include/linux/mtd/nand-ecc-mtk.h
similarity index 100%
rename from drivers/mtd/nand/raw/mtk_ecc.h
rename to include/linux/mtd/nand-ecc-mtk.h
-- 
2.35.1