[PATCH v4 4/4] mtd: nand: gpmi: add raw oob access functions

From: Boris Brezillon
Date: Mon Oct 20 2014 - 04:56:36 EST


Implement raw OOB access functions to retrieve OOB bytes when accessing the
NAND in raw mode.

Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
---
drivers/mtd/nand/gpmi-nand/gpmi-nand.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)

diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
index bd4dedc..d7c483a 100644
--- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
@@ -1473,6 +1473,22 @@ static int gpmi_ecc_write_page_raw(struct mtd_info *mtd,
return 0;
}

+static int gpmi_ecc_read_oob_raw(struct mtd_info *mtd, struct nand_chip *chip,
+ int page)
+{
+ chip->cmdfunc(mtd, NAND_CMD_READ0, 0, page);
+
+ return gpmi_ecc_read_page_raw(mtd, chip, NULL, 1, page);
+}
+
+static int gpmi_ecc_write_oob_raw(struct mtd_info *mtd, struct nand_chip *chip,
+ int page)
+{
+ chip->cmdfunc(mtd, NAND_CMD_SEQIN, 0, page);
+
+ return gpmi_ecc_write_page_raw(mtd, chip, NULL, 1);
+}
+
static int gpmi_block_markbad(struct mtd_info *mtd, loff_t ofs)
{
struct nand_chip *chip = mtd->priv;
@@ -1792,6 +1808,8 @@ static int gpmi_init_last(struct gpmi_nand_data *this)
ecc->write_oob = gpmi_ecc_write_oob;
ecc->read_page_raw = gpmi_ecc_read_page_raw;
ecc->write_page_raw = gpmi_ecc_write_page_raw;
+ ecc->read_oob_raw = gpmi_ecc_read_oob_raw;
+ ecc->write_oob_raw = gpmi_ecc_write_oob_raw;
ecc->mode = NAND_ECC_HW;
ecc->size = bch_geo->ecc_chunk_size;
ecc->strength = bch_geo->ecc_strength;
--
1.9.1

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