target/linux/ramips/patches-4.14/0040-nand-hack.patch

   1 --- a/drivers/mtd/nand/nand_base.c
   2 +++ b/drivers/mtd/nand/nand_base.c
   3 @@ -1908,6 +1908,9 @@ static int nand_do_read_ops(struct mtd_i
   4                                                  __func__, buf);
   5
   6  read_retry:
   7 +#ifdef CONFIG_MTK_MTD_NAND
   8 +                       ret = chip->read_page(mtd, chip, bufpoi, page);
   9 +#else
  10                         if (nand_standard_page_accessors(&chip->ecc))
  11                                 chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page);
  12
  13 @@ -1927,6 +1930,7 @@ read_retry:
  14                         else
  15                                 ret = chip->ecc.read_page(mtd, chip, bufpoi,
  16                                                           oob_required, page);
  17 +#endif
  18                         if (ret < 0) {
  19                                 if (use_bufpoi)
  20                                         /* Invalidate page cache */
  21 @@ -2761,9 +2765,14 @@ static int nand_do_write_ops(struct mtd_
  22                         memset(chip->oob_poi, 0xff, mtd->oobsize);
  23                 }
  24
  25 -               ret = nand_write_page(mtd, chip, column, bytes, wbuf,
  26 -                                     oob_required, page,
  27 -                                     (ops->mode == MTD_OPS_RAW));
  28 +               if (chip->write_page)
  29 +                       ret = chip->write_page(mtd, chip, column, bytes, wbuf,
  30 +                                              oob_required, page,
  31 +                                              (ops->mode == MTD_OPS_RAW));
  32 +               else
  33 +                       ret = nand_write_page(mtd, chip, column, bytes, wbuf,
  34 +                                             oob_required, page,
  35 +                                             (ops->mode == MTD_OPS_RAW));
  36                 if (ret)
  37                         break;
  38
  39 --- a/include/linux/mtd/rawnand.h
  40 +++ b/include/linux/mtd/rawnand.h
  41 @@ -885,6 +885,9 @@ struct nand_chip {
  42         int(*waitfunc)(struct mtd_info *mtd, struct nand_chip *this);
  43         int (*erase)(struct mtd_info *mtd, int page);
  44         int (*scan_bbt)(struct mtd_info *mtd);
  45 +       int (*write_page)(struct mtd_info *mtd, struct nand_chip *chip,
  46 +                       uint32_t offset, int data_len, const uint8_t *buf,
  47 +                       int oob_required, int page, int raw);
  48         int (*onfi_set_features)(struct mtd_info *mtd, struct nand_chip *chip,
  49                         int feature_addr, uint8_t *subfeature_para);
  50         int (*onfi_get_features)(struct mtd_info *mtd, struct nand_chip *chip,
  51 @@ -893,6 +896,9 @@ struct nand_chip {
  52         int (*setup_data_interface)(struct mtd_info *mtd, int chipnr,
  53                                     const struct nand_data_interface *conf);
  54
  55 +#ifdef CONFIG_MTK_MTD_NAND
  56 +       int (*read_page)(struct mtd_info *mtd, struct nand_chip *chip, u8 *buf, int page);
  57 +#endif /* CONFIG_MTK_MTD_NAND */
  58
  59         int chip_delay;
  60         unsigned int options;