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

Signed-off-by: Boris Brezillon <[email protected]>
---
 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 13eb1dd..115b769 100644
--- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
@@ -1528,6 +1528,22 @@ 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;
@@ -1847,6 +1863,8 @@ 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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