target/linux/sunxi/patches-4.1/116-mtd-add-vendor-specific-initcode-infra.patch

   1 From 95430662a26332474f4a03a7f8f44fd8d80890b3 Mon Sep 17 00:00:00 2001
   2 From: Boris BREZILLON <b.brezillon.dev@gmail.com>
   3 Date: Mon, 24 Feb 2014 16:28:32 +0100
   4 Subject: [PATCH] mtd: nand: Add manufacturer specific init code infrastructure
   5
   6 Add new fields in nand_manufacturers and nand_chip struct to provide
   7 manufacturer specific handling like read retries.
   8
   9 Signed-off-by: Boris BREZILLON <b.brezillon.dev@gmail.com>
  10 Signed-off-by: Hans de Goede <hdegoede@redhat.com>
  11 ---
  12  drivers/mtd/nand/nand_base.c | 7 +++++++
  13  include/linux/mtd/nand.h     | 4 ++++
  14  2 files changed, 11 insertions(+)
  15
  16 --- a/drivers/mtd/nand/nand_base.c
  17 +++ b/drivers/mtd/nand/nand_base.c
  18 @@ -4382,6 +4382,13 @@ ident_done:
  19         if (mtd->writesize > 512 && chip->cmdfunc == nand_command)
  20                 chip->cmdfunc = nand_command_lp;
  21
  22 +       if (nand_manuf_ids[maf_idx].init) {
  23 +               int err;
  24 +               err = nand_manuf_ids[maf_idx].init(mtd, id_data);
  25 +               if (err)
  26 +                       return ERR_PTR(err);
  27 +       }
  28 +
  29         pr_info("device found, Manufacturer ID: 0x%02x, Chip ID: 0x%02x\n",
  30                 *maf_id, *dev_id);
  31
  32 --- a/include/linux/mtd/nand.h
  33 +++ b/include/linux/mtd/nand.h
  34 @@ -748,6 +748,9 @@ struct nand_chip {
  35         int (*onfi_get_features)(struct mtd_info *mtd, struct nand_chip *chip,
  36                         int feature_addr, uint8_t *subfeature_para);
  37         int (*setup_read_retry)(struct mtd_info *mtd, int retry_mode);
  38 +       void (*manuf_cleanup)(struct mtd_info *mtd);
  39 +
  40 +       void *manuf_priv;
  41
  42         int chip_delay;
  43         unsigned int options;
  44 @@ -950,6 +953,7 @@ struct nand_flash_dev {
  45  struct nand_manufacturers {
  46         int id;
  47         char *name;
  48 +       int (*init)(struct mtd_info *mtd, const uint8_t *id);
  49  };
  50
  51  extern struct nand_flash_dev nand_flash_ids[];