mtd: nand: Let on-die ECC engines be retrieved from the NAND core

Before making use of the ECC engines, we must retrieve them. Add the
necessary boilerplate.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20200930154109.3922-5-miquel.raynal@bootlin.com

diff --git a/drivers/mtd/nand/ecc.c b/drivers/mtd/nand/ecc.c
index 57bc8c5..9afdde7 100644 (file)
--- a/drivers/mtd/nand/ecc.c
+++ b/drivers/mtd/nand/ecc.c
@@ -605,6 +605,12 @@ struct nand_ecc_engine *nand_ecc_get_sw_engine(struct nand_device *nand)
 }
 EXPORT_SYMBOL(nand_ecc_get_sw_engine);
 
+struct nand_ecc_engine *nand_ecc_get_on_die_hw_engine(struct nand_device *nand)
+{
+       return nand->ecc.ondie_engine;
+}
+EXPORT_SYMBOL(nand_ecc_get_on_die_hw_engine);
+
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Miquel Raynal <miquel.raynal@bootlin.com>");
 MODULE_DESCRIPTION("Generic ECC engine");

diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index f78f61c..6c6f91c 100644 (file)
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -278,6 +278,7 @@ int nand_ecc_finish_io_req(struct nand_device *nand,
                           struct nand_page_io_req *req);
 bool nand_ecc_is_strong_enough(struct nand_device *nand);
 struct nand_ecc_engine *nand_ecc_get_sw_engine(struct nand_device *nand);
+struct nand_ecc_engine *nand_ecc_get_on_die_hw_engine(struct nand_device *nand);
 
 #if IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING)
 struct nand_ecc_engine *nand_ecc_sw_hamming_get_engine(void);