Linux_Drivers/u-boot-2021.10/drivers/mtd/nand/raw/cvitek/cvsnfc_common.c

#include <common.h>
#include <nand.h>
#include <linux/mtd/nand.h>
#include <cvsnfc_common.h>

/*****************************************************************************/
struct nand_flash_dev *(*nand_get_spl_flash_type)(
	struct mtd_info *mtd,
	struct nand_chip *chip,
	struct nand_flash_dev_ex *flash_dev_ex) = NULL;

int (*nand_oob_resize)(struct mtd_info *mtd, struct nand_chip *chip,
		       struct nand_flash_dev_ex *flash_dev_ex) = NULL;

const char *type2str(struct match_type_str *table, int length, int type,
		     const char *def)
{
	while (length-- > 0) {
		if (table->type == type)
			return table->str;
		table++;
	}
	return def;
}

/*****************************************************************************/
#if defined(CONFIG_NAND_FLASH_CVSNFC)

/*****************************************************************************/
static struct match_type_str page2name[] = {
	{ NAND_PAGE_512B, "512" },
	{ NAND_PAGE_2K,   "2K" },
	{ NAND_PAGE_4K,   "4K" },
	{ NAND_PAGE_8K,   "8K" },
	{ NAND_PAGE_16K,  "16K" },
	{ NAND_PAGE_32K,  "32K" },
};

const char *nand_page_name(int type)
{
	return type2str(page2name, ARRAY_SIZE(page2name), type, "unknown");
}

/*****************************************************************************/
static struct match_reg_type page2size[] = {
	{ _512B, NAND_PAGE_512B },
	{ _2K, NAND_PAGE_2K },
	{ _4K, NAND_PAGE_4K },
	{ _8K, NAND_PAGE_8K },
	{ _16K, NAND_PAGE_16K },
	{ _32K, NAND_PAGE_32K },
};

int reg2type(struct match_reg_type *table, int length, int reg, int def)
{
	while (length-- > 0) {
		if (table->reg == reg)
			return table->type;
		table++;
	}
	return def;
}

int type2reg(struct match_reg_type *table, int length, int type, int def)
{
	while (length-- > 0) {
		if (table->type == type)
			return table->reg;
		table++;
	}
	return def;
}


int nandpage_size2type(int size)
{
	return reg2type(page2size, ARRAY_SIZE(page2size), size, NAND_PAGE_2K);
}

int nandpage_type2size(int size)
{
	return type2reg(page2size, ARRAY_SIZE(page2size), size, NAND_PAGE_2K);
}
#endif

#if 0
/*****************************************************************************/
#define et_ecc_none	0x00
#define et_ecc_4bit	0x02
#define et_ecc_8bit	0x03
#define et_ecc_24bit1k	0x04
#define et_ecc_40bit1k	0x05
#define et_ecc_64bit1k	0x06

static struct match_reg_type ecc_yaffs_type_t[] = {
	{et_ecc_none,		NAND_ECC_0BIT},
	{et_ecc_4bit,		NAND_ECC_8BIT},
	{et_ecc_8bit,		NAND_ECC_16BIT},
	{et_ecc_24bit1k,	NAND_ECC_24BIT},
	{et_ecc_40bit1k,	NAND_ECC_40BIT},
	{et_ecc_64bit1k,	NAND_ECC_64BIT}
};

unsigned char match_ecc_type_to_yaffs(unsigned char type)
{
	return type2reg(ecc_yaffs_type_t, ARRAY_SIZE(ecc_yaffs_type_t), type,
			et_ecc_4bit);
}

/*****************************************************************************/
static struct match_t page_table[] = {
	{NAND_PAGE_2K,	PAGE_SIZE_2KB,	"2K"},
	{NAND_PAGE_4K,	PAGE_SIZE_4KB,	"4K"},
	{NAND_PAGE_8K,	PAGE_SIZE_8KB,	"8K"},
	{NAND_PAGE_16K,	PAGE_SIZE_16KB,	"16K"},
};

unsigned char match_page_reg_to_type(unsigned char reg)
{
	return match_reg_to_type(page_table, ARRAY_SIZE(page_table), reg,
			NAND_PAGE_2K);
}

unsigned char match_page_type_to_reg(unsigned char type)
{
	return match_type_to_reg(page_table, ARRAY_SIZE(page_table), type,
			PAGE_SIZE_2KB);
}

const char *match_page_type_to_str(unsigned char type)
{
	return match_type_to_data(page_table, ARRAY_SIZE(page_table), type,
			"unknown");
}

/*****************************************************************************/
static struct match_t ecc_table[] = {
	{NAND_ECC_0BIT,		ECC_TYPE_0BIT,	"none"},
	{NAND_ECC_8BIT,		ECC_TYPE_8BIT,	"4bit/512"},
	{NAND_ECC_16BIT,	ECC_TYPE_16BIT,	"8bit/512"},
	{NAND_ECC_24BIT,	ECC_TYPE_24BIT,	"24bit/1K"},
	{NAND_ECC_28BIT,	ECC_TYPE_28BIT,	"28bit/1K"},
	{NAND_ECC_40BIT,	ECC_TYPE_40BIT,	"40bit/1K"},
	{NAND_ECC_64BIT,	ECC_TYPE_64BIT,	"64bit/1K"},
};

unsigned char match_ecc_reg_to_type(unsigned char reg)
{
	return match_reg_to_type(ecc_table, ARRAY_SIZE(ecc_table), reg,
			NAND_ECC_8BIT);
}

unsigned char match_ecc_type_to_reg(unsigned char type)
{
	return match_type_to_reg(ecc_table, ARRAY_SIZE(ecc_table), type,
			ECC_TYPE_8BIT);
}

const char *match_ecc_type_to_str(unsigned char type)
{
	return match_type_to_data(ecc_table, ARRAY_SIZE(ecc_table), type,
			"unknown");
}

/*****************************************************************************/
static struct match_t page_type_size_table[] = {
	{NAND_PAGE_2K,	_2K,	NULL},
	{NAND_PAGE_4K,	_4K,	NULL},
	{NAND_PAGE_8K,	_8K,	NULL},
	{NAND_PAGE_16K,	_16K,	NULL},
};

unsigned char match_page_size_to_type(unsigned int size)
{
	return match_reg_to_type(page_type_size_table,
			ARRAY_SIZE(page_type_size_table), size, NAND_PAGE_2K);
}

unsigned int match_page_type_to_size(unsigned char type)
{
	return match_type_to_reg(page_type_size_table,
			ARRAY_SIZE(page_type_size_table), type, _2K);
}

#endif