123 lines
3.0 KiB
C
123 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2022-2025 ArtInChip
|
|
*
|
|
* Authors:
|
|
* keliang.liu <keliang.liu@artinchip.com>
|
|
*/
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/mtd/spinand.h>
|
|
|
|
#define SPINAND_MFR_XTX 0x0B
|
|
|
|
#define XT26XXXC_STATUS_ECC_MASK GENMASK(7, 4)
|
|
#define XT26XXXC_STATUS_ECC_NO_DETECTED (0)
|
|
#define XT26XXXC_STATUS_ECC_STATUS_OFF (4)
|
|
#define XT26XXXC_STATUS_ECC_UNCOR_ERROR GENMASK(7, 4)
|
|
|
|
static SPINAND_OP_VARIANTS(read_cache_variants,
|
|
SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 1, NULL, 0),
|
|
SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
|
|
SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0),
|
|
SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0),
|
|
SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0),
|
|
SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0));
|
|
|
|
static SPINAND_OP_VARIANTS(write_cache_variants,
|
|
SPINAND_PROG_LOAD_X4(true, 0, NULL, 0),
|
|
SPINAND_PROG_LOAD(true, 0, NULL, 0));
|
|
|
|
static SPINAND_OP_VARIANTS(update_cache_variants,
|
|
SPINAND_PROG_LOAD_X4(false, 0, NULL, 0),
|
|
SPINAND_PROG_LOAD(false, 0, NULL, 0));
|
|
|
|
static int xt26xxxc_ooblayout_ecc(struct mtd_info *mtd, int section,
|
|
struct mtd_oob_region *region)
|
|
{
|
|
if (section)
|
|
return -ERANGE;
|
|
|
|
region->offset = 64;
|
|
region->length = 52;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int xt26xxxc_ooblayout_free(struct mtd_info *mtd, int section,
|
|
struct mtd_oob_region *region)
|
|
{
|
|
if (section)
|
|
return -ERANGE;
|
|
|
|
region->offset = 2;
|
|
region->length = 62;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct mtd_ooblayout_ops xt26xxxc_ooblayout = {
|
|
.ecc = xt26xxxc_ooblayout_ecc,
|
|
.free = xt26xxxc_ooblayout_free,
|
|
};
|
|
|
|
static int xt26xxxc_ecc_get_status(struct spinand_device *spinand,
|
|
u8 status)
|
|
{
|
|
status = status & XT26XXXC_STATUS_ECC_MASK;
|
|
|
|
switch (status) {
|
|
case XT26XXXC_STATUS_ECC_NO_DETECTED:
|
|
return 0;
|
|
case XT26XXXC_STATUS_ECC_UNCOR_ERROR:
|
|
return -EBADMSG;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* At this point values greater than (2 << 4) are invalid */
|
|
if (status > XT26XXXC_STATUS_ECC_UNCOR_ERROR)
|
|
return -EINVAL;
|
|
|
|
/* (1 << 4) through (7 << 4) are 1-7 corrected errors */
|
|
return status >> XT26XXXC_STATUS_ECC_STATUS_OFF;
|
|
}
|
|
|
|
static const struct spinand_info xtx_spinand_table[] = {
|
|
SPINAND_INFO("XT26G01C",
|
|
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x11),
|
|
NAND_MEMORG(1, 2048, 64, 64, 1024, 40, 1, 1, 1),
|
|
NAND_ECCREQ(8, 528),
|
|
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
|
|
&write_cache_variants,
|
|
&update_cache_variants),
|
|
SPINAND_HAS_QE_BIT,
|
|
SPINAND_ECCINFO(&xt26xxxc_ooblayout,
|
|
xt26xxxc_ecc_get_status)),
|
|
};
|
|
|
|
static int xtx_spinand_init(struct spinand_device *spinand)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static void xtx_spinand_cleanup(struct spinand_device *spinand)
|
|
{
|
|
|
|
}
|
|
|
|
static const struct spinand_manufacturer_ops xtx_spinand_manuf_ops = {
|
|
.init = xtx_spinand_init,
|
|
.cleanup = xtx_spinand_cleanup
|
|
};
|
|
|
|
const struct spinand_manufacturer xtx_spinand_manufacturer = {
|
|
.id = SPINAND_MFR_XTX,
|
|
.name = "xtx",
|
|
.chips = xtx_spinand_table,
|
|
.nchips = ARRAY_SIZE(xtx_spinand_table),
|
|
.ops = &xtx_spinand_manuf_ops,
|
|
};
|