linux/drivers/mtd/nand/raw/ingenic/jz4740_ecc.c

// SPDX-License-Identifier: GPL-2.0
/*
 * JZ4740 ECC controller driver
 *
 * Copyright (c) 2019 Paul Cercueil <[email protected]>
 *
 * based on jz4740-nand.c
 */

#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>

#include "ingenic_ecc.h"

#define JZ_REG_NAND_ECC_CTRL …
#define JZ_REG_NAND_DATA …
#define JZ_REG_NAND_PAR0 …
#define JZ_REG_NAND_PAR1 …
#define JZ_REG_NAND_PAR2 …
#define JZ_REG_NAND_IRQ_STAT …
#define JZ_REG_NAND_IRQ_CTRL …
#define JZ_REG_NAND_ERR(x) …

#define JZ_NAND_ECC_CTRL_PAR_READY …
#define JZ_NAND_ECC_CTRL_ENCODING …
#define JZ_NAND_ECC_CTRL_RS …
#define JZ_NAND_ECC_CTRL_RESET …
#define JZ_NAND_ECC_CTRL_ENABLE …

#define JZ_NAND_STATUS_ERR_COUNT …
#define JZ_NAND_STATUS_PAD_FINISH …
#define JZ_NAND_STATUS_DEC_FINISH …
#define JZ_NAND_STATUS_ENC_FINISH …
#define JZ_NAND_STATUS_UNCOR_ERROR …
#define JZ_NAND_STATUS_ERROR …

static const uint8_t empty_block_ecc[] = …;

static void jz4740_ecc_reset(struct ingenic_ecc *ecc, bool calc_ecc)
{ … }

static int jz4740_ecc_calculate(struct ingenic_ecc *ecc,
				struct ingenic_ecc_params *params,
				const u8 *buf, u8 *ecc_code)
{ … }

static void jz_nand_correct_data(uint8_t *buf, int index, int mask)
{ … }

static int jz4740_ecc_correct(struct ingenic_ecc *ecc,
			      struct ingenic_ecc_params *params,
			      u8 *buf, u8 *ecc_code)
{ … }

static void jz4740_ecc_disable(struct ingenic_ecc *ecc)
{ … }

static const struct ingenic_ecc_ops jz4740_ecc_ops = …;

static const struct of_device_id jz4740_ecc_dt_match[] = …;
MODULE_DEVICE_TABLE(of, jz4740_ecc_dt_match);

static struct platform_driver jz4740_ecc_driver = …;
module_platform_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;