mtd: nand: kirkwood: add RS-ECC encoding support

[karo-tx-uboot.git] / drivers / mtd / nand / nand_base.c

diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index bfd668fa0ac5425f21361971ca5f0efc26bff4f7..47755b1f25ab843926ad49b1e38efaf251b5b3fb 100644 (file)
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -3081,6 +3081,25 @@ int nand_scan_tail(struct mtd_info *mtd)
 
                break;
 
+#ifdef CONFIG_NAND_ECC_SOFT_RS
+       case NAND_ECC_SOFT_RS:
+               chip->ecc.calculate = nand_rs_calculate_ecc;
+               chip->ecc.correct = nand_rs_correct_data;
+               chip->ecc.read_page = nand_read_page_swecc;
+               chip->ecc.read_subpage = nand_read_subpage;
+               chip->ecc.write_page = nand_write_page_swecc;
+               chip->ecc.read_page_raw = nand_read_page_raw;
+               chip->ecc.write_page_raw = nand_write_page_raw;
+               chip->ecc.read_oob = nand_read_oob_std;
+               chip->ecc.write_oob = nand_write_oob_std;
+               if (!chip->ecc.size && mtd->oobsize >= 64) {
+                       chip->ecc.size = 512;
+                       chip->ecc.bytes = 10;
+                       printf("Using default ecc size %u and eccbytes %u for OOB size %u\n",
+                              chip->ecc.size, chip->ecc.bytes, mtd->oobsize);
+               }
+               break;
+#endif
        case NAND_ECC_NONE:
                printk(KERN_WARNING "NAND_ECC_NONE selected by board driver. "
                       "This is not recommended !!\n");