Quelle  macronix.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2018 Macronix
 *
 * Author: Boris Brezillon <boris.brezillon@bootlin.com>
 */

#include <linux/bitfield.h>
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/mtd/spinand.h>

#define SPINAND_MFR_MACRONIX  0xC2
#define MACRONIX_ECCSR_BF_LAST_PAGE(eccsr) FIELD_GET(GENMASK(3, 0), eccsr)
#define MACRONIX_ECCSR_BF_ACCUMULATED_PAGES(eccsr) FIELD_GET(GENMASK(7, 4), eccsr)
#define MACRONIX_CFG_CONT_READ         BIT(2)
#define MACRONIX_FEATURE_ADDR_READ_RETRY 0x70
#define MACRONIX_NUM_READ_RETRY_MODES 5

#define STATUS_ECC_HAS_BITFLIPS_THRESHOLD (3 << 4)

/* Bitflip theshold configuration register */
#define REG_CFG_BFT 0x10
#define CFG_BFT(x) FIELD_PREP(GENMASK(7, 4), (x))

struct macronix_priv {
 bool cont_read;
};

static SPINAND_OP_VARIANTS(read_cache_variants,
  SPINAND_PAGE_READ_FROM_CACHE_1S_1S_4S_OP(0, 1, NULL, 0, 0),
  SPINAND_PAGE_READ_FROM_CACHE_1S_1S_2S_OP(0, 1, NULL, 0, 0),
  SPINAND_PAGE_READ_FROM_CACHE_FAST_1S_1S_1S_OP(0, 1, NULL, 0, 0),
  SPINAND_PAGE_READ_FROM_CACHE_1S_1S_1S_OP(0, 1, NULL, 0, 0));

static SPINAND_OP_VARIANTS(write_cache_variants,
  SPINAND_PROG_LOAD_1S_1S_4S_OP(true, 0, NULL, 0),
  SPINAND_PROG_LOAD_1S_1S_1S_OP(false, 0, NULL, 0));

static SPINAND_OP_VARIANTS(update_cache_variants,
  SPINAND_PROG_LOAD_1S_1S_4S_OP(false, 0, NULL, 0),
  SPINAND_PROG_LOAD_1S_1S_1S_OP(false, 0, NULL, 0));

static int mx35lfxge4ab_ooblayout_ecc(struct mtd_info *mtd, int section,
          struct mtd_oob_region *region)
{
 return -ERANGE;
}

static int mx35lfxge4ab_ooblayout_free(struct mtd_info *mtd, int section,
           struct mtd_oob_region *region)
{
 if (section)
  return -ERANGE;

 region->offset = 2;
 region->length = mtd->oobsize - 2;

 return 0;
}

static const struct mtd_ooblayout_ops mx35lfxge4ab_ooblayout = {
 .ecc = mx35lfxge4ab_ooblayout_ecc,
 .free = mx35lfxge4ab_ooblayout_free,
};

static int macronix_get_eccsr(struct spinand_device *spinand, u8 *eccsr)
{
 struct macronix_priv *priv = spinand->priv;
 struct spi_mem_op op = SPI_MEM_OP(SPI_MEM_OP_CMD(0x7c, 1),
       SPI_MEM_OP_NO_ADDR,
       SPI_MEM_OP_DUMMY(1, 1),
       SPI_MEM_OP_DATA_IN(1, eccsr, 1));

 int ret = spi_mem_exec_op(spinand->spimem, &op);
 if (ret)
  return ret;

 /*
 * ECCSR exposes the number of bitflips for the last read page in bits [3:0].
 * Continuous read compatible chips also expose the maximum number of
 * bitflips for the whole (continuous) read operation in bits [7:4].
 */
 if (!priv->cont_read)
  *eccsr = MACRONIX_ECCSR_BF_LAST_PAGE(*eccsr);
 else
  *eccsr = MACRONIX_ECCSR_BF_ACCUMULATED_PAGES(*eccsr);

 return 0;
}

static int macronix_ecc_get_status(struct spinand_device *spinand,
       u8 status)
{
 struct nand_device *nand = spinand_to_nand(spinand);
 u8 eccsr;

 switch (status & STATUS_ECC_MASK) {
 case STATUS_ECC_NO_BITFLIPS:
  return 0;

 case STATUS_ECC_UNCOR_ERROR:
  return -EBADMSG;

 case STATUS_ECC_HAS_BITFLIPS:
  /*
 * Let's try to retrieve the real maximum number of bitflips
 * in order to avoid forcing the wear-leveling layer to move
 * data around if it's not necessary.
 */
  if (macronix_get_eccsr(spinand, spinand->scratchbuf))
   return nanddev_get_ecc_conf(nand)->strength;

  eccsr = *spinand->scratchbuf;
  if (WARN_ON(eccsr > nanddev_get_ecc_conf(nand)->strength || !eccsr))
   return nanddev_get_ecc_conf(nand)->strength;

  return eccsr;
 default:
  break;
 }

 return -EINVAL;
}

static int macronix_set_cont_read(struct spinand_device *spinand, bool enable)
{
 struct macronix_priv *priv = spinand->priv;
 int ret;

 ret = spinand_upd_cfg(spinand, MACRONIX_CFG_CONT_READ,
         enable ? MACRONIX_CFG_CONT_READ : 0);
 if (ret)
  return ret;

 priv->cont_read = enable;

 return 0;
}

/**
 * macronix_set_read_retry - Set the retry mode
 * @spinand: SPI NAND device
 * @retry_mode: Specify which retry mode to set
 *
 * Return: 0 on success, a negative error code otherwise.
 */
static int macronix_set_read_retry(struct spinand_device *spinand,
          unsigned int retry_mode)
{
 struct spi_mem_op op = SPINAND_SET_FEATURE_1S_1S_1S_OP(MACRONIX_FEATURE_ADDR_READ_RETRY,
              spinand->scratchbuf);

 *spinand->scratchbuf = retry_mode;
 return spi_mem_exec_op(spinand->spimem, &op);
}

static const struct spinand_info macronix_spinand_table[] = {
 SPINAND_INFO("MX35LF1GE4AB",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x12),
       NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
       NAND_ECCREQ(4, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
         macronix_ecc_get_status)),
 SPINAND_INFO("MX35LF2GE4AB",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x22),
       NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 2, 1, 1),
       NAND_ECCREQ(4, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT |
       SPINAND_HAS_PROG_PLANE_SELECT_BIT |
       SPINAND_HAS_READ_PLANE_SELECT_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, NULL)),
 SPINAND_INFO("MX35LF2GE4AD",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x26, 0x03),
       NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 1, 1, 1),
       NAND_ECCREQ(8, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
         macronix_ecc_get_status),
       SPINAND_CONT_READ(macronix_set_cont_read),
       SPINAND_READ_RETRY(MACRONIX_NUM_READ_RETRY_MODES,
     macronix_set_read_retry)),
 SPINAND_INFO("MX35LF4GE4AD",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x37, 0x03),
       NAND_MEMORG(1, 4096, 128, 64, 2048, 40, 1, 1, 1),
       NAND_ECCREQ(8, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
         macronix_ecc_get_status),
       SPINAND_CONT_READ(macronix_set_cont_read),
       SPINAND_READ_RETRY(MACRONIX_NUM_READ_RETRY_MODES,
     macronix_set_read_retry)),
 SPINAND_INFO("MX35LF1G24AD",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x14, 0x03),
       NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
       NAND_ECCREQ(8, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, NULL),
       SPINAND_READ_RETRY(MACRONIX_NUM_READ_RETRY_MODES,
     macronix_set_read_retry)),
 SPINAND_INFO("MX35LF2G24AD",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x24, 0x03),
       NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 2, 1, 1),
       NAND_ECCREQ(8, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT |
       SPINAND_HAS_PROG_PLANE_SELECT_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, NULL),
       SPINAND_READ_RETRY(MACRONIX_NUM_READ_RETRY_MODES,
     macronix_set_read_retry)),
 SPINAND_INFO("MX35LF2G24AD-Z4I8",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x64, 0x03),
       NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
       NAND_ECCREQ(8, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, NULL),
       SPINAND_READ_RETRY(MACRONIX_NUM_READ_RETRY_MODES,
     macronix_set_read_retry)),
 SPINAND_INFO("MX35LF4G24AD",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x35, 0x03),
       NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 2, 1, 1),
       NAND_ECCREQ(8, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT |
       SPINAND_HAS_PROG_PLANE_SELECT_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, NULL),
       SPINAND_READ_RETRY(MACRONIX_NUM_READ_RETRY_MODES,
     macronix_set_read_retry)),
 SPINAND_INFO("MX35LF4G24AD-Z4I8",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x75, 0x03),
       NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 1, 1, 1),
       NAND_ECCREQ(8, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, NULL),
       SPINAND_READ_RETRY(MACRONIX_NUM_READ_RETRY_MODES,
     macronix_set_read_retry)),
 SPINAND_INFO("MX31LF1GE4BC",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x1e),
       NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
       NAND_ECCREQ(8, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
         macronix_ecc_get_status)),
 SPINAND_INFO("MX31UF1GE4BC",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x9e),
       NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
       NAND_ECCREQ(8, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
         macronix_ecc_get_status)),

 SPINAND_INFO("MX35LF2G14AC",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x20),
       NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 2, 1, 1),
       NAND_ECCREQ(4, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT |
       SPINAND_HAS_PROG_PLANE_SELECT_BIT |
       SPINAND_HAS_READ_PLANE_SELECT_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
         macronix_ecc_get_status)),
 SPINAND_INFO("MX35UF4G24AD",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xb5, 0x03),
       NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 2, 1, 1),
       NAND_ECCREQ(8, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT |
       SPINAND_HAS_PROG_PLANE_SELECT_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
         macronix_ecc_get_status),
       SPINAND_READ_RETRY(MACRONIX_NUM_READ_RETRY_MODES,
     macronix_set_read_retry)),
 SPINAND_INFO("MX35UF4G24AD-Z4I8",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xf5, 0x03),
       NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 1, 1, 1),
       NAND_ECCREQ(8, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
         macronix_ecc_get_status),
       SPINAND_READ_RETRY(MACRONIX_NUM_READ_RETRY_MODES,
     macronix_set_read_retry)),
 SPINAND_INFO("MX35UF4GE4AD",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xb7, 0x03),
       NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 1, 1, 1),
       NAND_ECCREQ(8, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
         macronix_ecc_get_status),
       SPINAND_CONT_READ(macronix_set_cont_read),
       SPINAND_READ_RETRY(MACRONIX_NUM_READ_RETRY_MODES,
     macronix_set_read_retry)),
 SPINAND_INFO("MX35UF2G14AC",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xa0),
       NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 2, 1, 1),
       NAND_ECCREQ(4, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT |
       SPINAND_HAS_PROG_PLANE_SELECT_BIT |
       SPINAND_HAS_READ_PLANE_SELECT_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
         macronix_ecc_get_status)),
 SPINAND_INFO("MX35UF2G24AD",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xa4, 0x03),
       NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 2, 1, 1),
       NAND_ECCREQ(8, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT |
       SPINAND_HAS_PROG_PLANE_SELECT_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
         macronix_ecc_get_status),
       SPINAND_READ_RETRY(MACRONIX_NUM_READ_RETRY_MODES,
     macronix_set_read_retry)),
 SPINAND_INFO("MX35UF2G24AD-Z4I8",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xe4, 0x03),
       NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
       NAND_ECCREQ(8, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
         macronix_ecc_get_status),
       SPINAND_READ_RETRY(MACRONIX_NUM_READ_RETRY_MODES,
     macronix_set_read_retry)),
 SPINAND_INFO("MX35UF2GE4AD",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xa6, 0x03),
       NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
       NAND_ECCREQ(8, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
         macronix_ecc_get_status),
       SPINAND_CONT_READ(macronix_set_cont_read),
       SPINAND_READ_RETRY(MACRONIX_NUM_READ_RETRY_MODES,
     macronix_set_read_retry)),
 SPINAND_INFO("MX35UF2GE4AC",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xa2, 0x01),
       NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 1, 1, 1),
       NAND_ECCREQ(4, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
         macronix_ecc_get_status),
       SPINAND_CONT_READ(macronix_set_cont_read)),
 SPINAND_INFO("MX35UF1G14AC",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x90),
       NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
       NAND_ECCREQ(4, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
         macronix_ecc_get_status)),
 SPINAND_INFO("MX35UF1G24AD",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x94, 0x03),
       NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
       NAND_ECCREQ(8, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
         macronix_ecc_get_status),
       SPINAND_READ_RETRY(MACRONIX_NUM_READ_RETRY_MODES,
     macronix_set_read_retry)),
 SPINAND_INFO("MX35UF1GE4AD",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x96, 0x03),
       NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
       NAND_ECCREQ(8, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
         macronix_ecc_get_status),
       SPINAND_CONT_READ(macronix_set_cont_read),
       SPINAND_READ_RETRY(MACRONIX_NUM_READ_RETRY_MODES,
     macronix_set_read_retry)),
 SPINAND_INFO("MX35UF1GE4AC",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x92, 0x01),
       NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
       NAND_ECCREQ(4, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
         macronix_ecc_get_status),
       SPINAND_CONT_READ(macronix_set_cont_read)),
 SPINAND_INFO("MX31LF2GE4BC",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x2e),
       NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 1, 1, 1),
       NAND_ECCREQ(8, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
         macronix_ecc_get_status)),
 SPINAND_INFO("MX3UF2GE4BC",
       SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xae),
       NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 1, 1, 1),
       NAND_ECCREQ(8, 512),
       SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
           &write_cache_variants,
           &update_cache_variants),
       SPINAND_HAS_QE_BIT,
       SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
         macronix_ecc_get_status)),
};

static int macronix_spinand_init(struct spinand_device *spinand)
{
 struct macronix_priv *priv;

 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 if (!priv)
  return -ENOMEM;

 spinand->priv = priv;

 return 0;
}

static void macronix_spinand_cleanup(struct spinand_device *spinand)
{
 kfree(spinand->priv);
}

static const struct spinand_manufacturer_ops macronix_spinand_manuf_ops = {
 .init = macronix_spinand_init,
 .cleanup = macronix_spinand_cleanup,
};

const struct spinand_manufacturer macronix_spinand_manufacturer = {
 .id = SPINAND_MFR_MACRONIX,
 .name = "Macronix",
 .chips = macronix_spinand_table,
 .nchips = ARRAY_SIZE(macronix_spinand_table),
 .ops = ¯onix_spinand_manuf_ops,
};