mtd: nand: gpmi: add raw oob access functions

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

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Tested-by: Huang Shijie <shijie8@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
index 987de1e..4f3851a 100644 (file)
--- 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;