mtd: eLBC NAND: fix subpage write support

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / mtd / nand / fsl_elbc_nand.c

diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c
index bcf6080..c09ab95 100644 (file)
--- a/drivers/mtd/nand/fsl_elbc_nand.c
+++ b/drivers/mtd/nand/fsl_elbc_nand.c
@@ -724,6 +724,19 @@ static int fsl_elbc_write_page(struct mtd_info *mtd, struct nand_chip *chip,
        return 0;
 }
 
+/* ECC will be calculated automatically, and errors will be detected in
+ * waitfunc.
+ */
+static int fsl_elbc_write_subpage(struct mtd_info *mtd, struct nand_chip *chip,
+                               uint32_t offset, uint32_t data_len,
+                               const uint8_t *buf, int oob_required)
+{
+       fsl_elbc_write_buf(mtd, buf, mtd->writesize);
+       fsl_elbc_write_buf(mtd, chip->oob_poi, mtd->oobsize);
+
+       return 0;
+}
+
 static int fsl_elbc_chip_init(struct fsl_elbc_mtd *priv)
 {
        struct fsl_lbc_ctrl *ctrl = priv->ctrl;
@@ -762,6 +775,7 @@ static int fsl_elbc_chip_init(struct fsl_elbc_mtd *priv)
 
        chip->ecc.read_page = fsl_elbc_read_page;
        chip->ecc.write_page = fsl_elbc_write_page;
+       chip->ecc.write_subpage = fsl_elbc_write_subpage;
 
        /* If CS Base Register selects full hardware ECC then use it */
        if ((in_be32(&lbc->bank[priv->bank].br) & BR_DECC) ==