Subject: [PATCH v3 05/40] mtd: rawnand: Create a new enumeration to describe properly ECC types

From: Miquel Raynal <[email-masked]>
Date: Thu, 19 Sep 2019 21:31:05 +0200

Now that the misleading mix between ECC engine type and OOB placement
has been addressed, add a new enumeration to properly define ECC types
(also called provider or mode).

Signed-off-by: Miquel Raynal <[email-masked]>
---
 drivers/mtd/nand/raw/nand_base.c |  7 +++++++
 include/linux/mtd/rawnand.h      | 16 ++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
index 9a05ebfc44d1..00a261284aad 100644
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -4842,6 +4842,13 @@ static const char * const nand_ecc_modes[] = {
 	[NAND_ECC_ON_DIE]	= "on-die",
 };
 
+static const char * const nand_ecc_engine_providers[] = {
+	[NAND_NO_ECC_ENGINE] = "none",
+	[NAND_SOFT_ECC_ENGINE] = "soft",
+	[NAND_HW_ECC_ENGINE] = "hw",
+	[NAND_ON_DIE_ECC_ENGINE] = "on-die",
+};
+
 static const char * const nand_ecc_engine_oob_placement[] = {
 	[NAND_ECC_SYNDROME_OOB_PLACEMENT] = "hw_syndrome",
 	[NAND_ECC_OOB_FIRST_PLACEMENT] = "hw_oob_first",
diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
index 1b462fb2ab77..23feab162bc2 100644
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -93,6 +93,22 @@ enum nand_ecc_mode {
 	NAND_ECC_ON_DIE,
 };
 
+/**
+ * enum nand_ecc_engine_type - NAND ECC engine type/provider
+ * @NAND_INVALID_ECC_ENGINE: Invalid value
+ * @NAND_NO_ECC_ENGINE: No ECC correction
+ * @NAND_SOFT_ECC_ENGINE: Software ECC correction
+ * @NAND_HW_ECC_ENGINE: Hardware (controller side) ECC correction
+ * @NAND_ON_DIE_ECC_ENGINE: Hardware (chip side) ECC correction
+ */
+enum nand_ecc_engine_type {
+	NAND_INVALID_ECC_ENGINE,
+	NAND_NO_ECC_ENGINE,
+	NAND_SOFT_ECC_ENGINE,
+	NAND_HW_ECC_ENGINE,
+	NAND_ON_DIE_ECC_ENGINE,
+};
+
 /**
  * enum nand_ecc_engine_oob_placement - NAND ECC engine OOB placement
  * @NAND_ECC_DEFAULT_OOB_PLACEMENT: Standard layout, or not specified
-- 
2.20.1

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